/* roulang page: index */
:root{
  --sky:#2F5F8C;
  --sky-deep:#234A70;
  --cyan:#18B8B2;
  --pulse:#F08A5D;
  --pulse-deep:#D97046;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --soft:#EAF2FA;
  --line:#DCE6F2;
  --ink:#162234;
  --body:#2B3A4D;
  --muted:#6B7C91;
  --ok:#2E9E6B;
  --err:#D9534F;
  --foot:#101A2B;
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --sm:0 2px 8px rgba(16,26,43,.06);
  --md:0 8px 24px rgba(16,26,43,.08);
  --lg:0 18px 40px rgba(16,26,43,.12);
  --ff:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:1.75;
  color:var(--body);
  background:var(--bg);
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--sky);text-decoration:none}
a:hover{color:var(--sky-deep)}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:16px;color:var(--body)}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.32;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{display:block}
:focus-visible{outline:3px solid rgba(47,95,140,.25);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:92px 0}
.section--tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px}
.section-head .lead{max-width:640px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--sky);
  letter-spacing:.06em;text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--sky);border-radius:2px}
h2.section-title{font-size:clamp(1.75rem,2.6vw,2.25rem);margin-bottom:12px}
.section-sub{color:var(--muted);font-size:16px;max-width:680px}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;white-space:nowrap;transition:gap .2s ease,color .2s ease}
.link-more:hover{gap:10px;color:var(--sky-deep)}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;text-align:center;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .16s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--sky);color:#fff;box-shadow:var(--sm)}
.btn-primary:hover{background:var(--sky-deep);color:#fff;box-shadow:var(--md)}
.btn-ghost{background:#fff;color:var(--sky);border-color:var(--line)}
.btn-ghost:hover{background:var(--soft);color:var(--sky-deep);border-color:#C6D8EA}
.btn-accent{background:var(--pulse);color:#fff}
.btn-accent:hover{background:var(--pulse-deep);color:#fff}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* Badges & tags */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--soft);color:var(--sky-deep);
  font-size:12.5px;font-weight:600;line-height:1.6;
}
.badge--cyan{background:rgba(24,184,178,.12);color:#0F8A86}
.badge--line{background:#fff;border:1px solid var(--line);color:var(--muted);font-weight:500}
.tagrow{display:flex;flex-wrap:wrap;gap:10px}

/* Header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--md)}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  gap:24px;min-height:76px;
}
.nav-left{display:flex;align-items:center;gap:26px;justify-self:end}
.nav-right{display:flex;align-items:center;gap:26px;justify-self:start}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--body);
  padding:8px 4px;border-radius:8px;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:4px;right:4px;bottom:2px;height:2px;border-radius:2px;
  background:var(--sky);transform:scaleX(0);transform-origin:center;transition:transform .22s ease;
}
.nav-link:hover{color:var(--sky-deep);background:var(--soft)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--sky-deep);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  padding:0 32px;justify-self:center;color:var(--ink);
}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(140deg,var(--sky) 0%,var(--sky-deep) 62%,#1B3A59 100%);
  display:grid;place-items:center;box-shadow:var(--sm);flex:0 0 auto;
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em}
.brand-sub{font-size:11px;font-weight:500;color:var(--muted);letter-spacing:.14em}
.nav-toggle{
  display:none;justify-self:end;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;place-items:center;color:var(--ink);
  transition:background-color .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--soft);border-color:#C6D8EA}
.nav-toggle svg{width:22px;height:22px}

/* Drawer */
.drawer{
  position:fixed;inset:0;z-index:120;display:none;
}
.drawer.is-open{display:block}
.drawer-backdrop{position:absolute;inset:0;background:rgba(16,26,43,.45);opacity:0;transition:opacity .25s ease}
.drawer.is-open .drawer-backdrop{opacity:1}
.drawer-panel{
  position:absolute;top:0;right:0;width:min(340px,86vw);height:100%;
  background:#fff;box-shadow:var(--lg);padding:20px 20px 32px;
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s ease;
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:10px}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--ink);
}
.drawer-close:hover{background:var(--soft)}
.drawer-label{font-size:12px;font-weight:600;color:var(--muted);letter-spacing:.1em;margin:12px 0 4px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:13px 14px;border-radius:12px;color:var(--body);font-weight:500;
  border:1px solid transparent;transition:background-color .2s ease,border-color .2s ease,color .2s ease;
}
.drawer-link:hover{background:var(--soft);color:var(--sky-deep);border-color:var(--line)}
.drawer-link.is-active{background:var(--soft);color:var(--sky-deep);font-weight:600;border-color:#C6D8EA}
.drawer-cta{margin-top:18px}
body.is-locked{overflow:hidden}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,#F3F8FD 62%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;top:-120px;right:-80px;width:520px;height:520px;
  background-image:radial-gradient(rgba(47,95,140,.16) 1px,transparent 1px);
  background-size:22px 22px;opacity:.55;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:-160px;bottom:-200px;width:460px;height:460px;border-radius:50%;
  border:1px solid rgba(47,95,140,.14);pointer-events:none;
}
.hero-inner{
  position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
  min-height:700px;padding:56px 0 72px;
}
.hero-copy .eyebrow{margin-bottom:18px}
.hero h1{
  font-size:clamp(2.6rem,4.8vw,4rem);line-height:1.16;letter-spacing:-.01em;
  margin-bottom:22px;color:var(--ink);
}
.hero h1 .hl{color:var(--sky);position:relative;white-space:nowrap}
.hero-sub{font-size:18px;line-height:1.85;color:var(--body);max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px}
.hero-point{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.hero-point svg{width:18px;height:18px;color:var(--cyan);flex:0 0 auto}
.hero-visual{
  position:relative;border-radius:20px;overflow:hidden;aspect-ratio:4/3;
  box-shadow:var(--lg);border:1px solid rgba(255,255,255,.7);background:var(--soft);
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.75) 1px,transparent 1px);
  background-size:26px 26px;opacity:.35;pointer-events:none;
}
.hero-visual-badge{
  position:absolute;left:18px;bottom:18px;z-index:2;
  background:rgba(255,255,255,.94);backdrop-filter:blur(4px);
  border-radius:12px;padding:10px 16px;box-shadow:var(--sm);
  display:flex;align-items:center;gap:10px;
}
.hero-visual-badge strong{font-size:14px;color:var(--ink);font-weight:700}
.hero-visual-badge span{font-size:12px;color:var(--muted)}

/* Trust strip */
.truststrip{background:#fff;border-bottom:1px solid var(--line)}
.truststrip-inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 18px;
  padding:20px 0;
}
.truststrip-label{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:.05em}
.trust-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:999px;background:var(--bg);
  border:1px solid var(--line);font-size:13.5px;font-weight:500;color:var(--body);
  transition:background-color .2s ease,border-color .2s ease,transform .2s ease;
}
.trust-pill:hover{background:var(--soft);border-color:#C6D8EA;transform:translateY(-2px)}
.trust-pill i{width:6px;height:6px;border-radius:50%;background:var(--cyan);display:inline-block}

/* Value cards - asymmetric */
.value-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:24px}
.value-main{
  position:relative;background:linear-gradient(160deg,#24507A 0%,#1B3A59 100%);
  color:#fff;border-radius:var(--r-card);padding:40px 36px;
  display:flex;flex-direction:column;justify-content:space-between;
  min-height:400px;overflow:hidden;box-shadow:var(--md);
}
.value-main::before{
  content:"";position:absolute;right:-40px;top:-40px;width:240px;height:240px;border-radius:50%;
  border:1px solid rgba(255,255,255,.18);
}
.value-main::after{
  content:"";position:absolute;right:20px;bottom:20px;width:180px;height:180px;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:20px 20px;opacity:.35;
}
.value-main .num{font-size:13px;font-weight:700;color:var(--cyan);letter-spacing:.16em}
.value-main h3{color:#fff;font-size:clamp(1.4rem,2.2vw,1.8rem);margin:16px 0 14px;position:relative;z-index:2}
.value-main p{color:rgba(255,255,255,.82);font-size:15px;line-height:1.85;max-width:420px;position:relative;z-index:2}
.value-main .link-more{color:#fff;margin-top:26px;position:relative;z-index:2}
.value-main .link-more:hover{color:var(--cyan)}
.value-side{display:grid;gap:24px}
.value-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 30px;box-shadow:var(--sm);
  display:flex;gap:20px;align-items:flex-start;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.value-card:hover{transform:translateY(-3px);box-shadow:var(--md);border-color:#C6D8EA}
.value-card .num{
  flex:0 0 auto;width:42px;height:42px;border-radius:12px;background:var(--soft);
  color:var(--sky-deep);display:grid;place-items:center;font-size:14px;font-weight:700;
}
.value-card h3{font-size:1.2rem;margin-bottom:8px}
.value-card p{font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:12px}

/* Demo */
.demo{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.demo-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center}
.demo-tabs{display:flex;flex-direction:column;gap:12px;margin-top:28px}
.demo-tab{
  display:flex;gap:16px;align-items:flex-start;text-align:left;
  padding:18px 20px;border-radius:14px;border:1px solid var(--line);background:#fff;
  transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.demo-tab:hover{border-color:#C6D8EA;background:var(--bg);transform:translateY(-2px)}
.demo-tab.is-active{background:var(--soft);border-color:#B9D2E8;box-shadow:var(--sm)}
.demo-tab .idx{
  flex:0 0 auto;width:28px;height:28px;border-radius:9px;background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;font-size:12.5px;font-weight:700;color:var(--sky);
}
.demo-tab.is-active .idx{background:var(--sky);border-color:var(--sky);color:#fff}
.demo-tab strong{display:block;font-size:15.5px;color:var(--ink);margin-bottom:4px}
.demo-tab span.desc{font-size:13.5px;color:var(--muted);line-height:1.7}
.demo-stage{
  position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--md);background:var(--soft);aspect-ratio:16/11;
}
.demo-stage img{width:100%;height:100%;object-fit:cover}
.demo-panel{
  position:absolute;left:20px;right:20px;bottom:20px;
  background:rgba(255,255,255,.96);border-radius:14px;padding:18px 20px;
  box-shadow:var(--sm);border:1px solid rgba(220,230,242,.9);
}
.demo-panel h4{font-size:15px;color:var(--ink);margin-bottom:6px}
.demo-panel p{font-size:13.5px;color:var(--muted);line-height:1.75}
.demo-thumb{
  position:absolute;right:20px;top:20px;width:112px;height:76px;border-radius:10px;overflow:hidden;
  border:2px solid #fff;box-shadow:var(--md);
}
.demo-thumb img{width:100%;height:100%;object-fit:cover}

/* Stats & quotes */
.proof{background:var(--bg)}
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sm);margin-bottom:44px;
}
.stat{padding:32px 26px;border-right:1px solid var(--line)}
.stat:last-child{border-right:none}
.stat b{
  display:block;font-size:clamp(1.6rem,2.6vw,2.1rem);font-weight:700;color:var(--sky-deep);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat span{display:block;font-size:13.5px;color:var(--muted);margin-top:8px}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quote-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.quote-card:hover{transform:translateY(-3px);box-shadow:var(--md);border-color:#C6D8EA}
.quote-card .mark{font-size:26px;line-height:1;color:var(--cyan);font-weight:700;margin-bottom:12px}
.quote-card p{font-size:14.5px;color:var(--body);line-height:1.85;margin-bottom:18px}
.quote-meta{display:flex;align-items:center;gap:12px}
.avatar{
  width:38px;height:38px;border-radius:50%;background:var(--soft);color:var(--sky-deep);
  display:grid;place-items:center;font-weight:700;font-size:14px;flex:0 0 auto;
}
.quote-meta strong{display:block;font-size:13.5px;color:var(--ink)}
.quote-meta span{font-size:12.5px;color:var(--muted)}

/* Latest news */
.latest{background:#fff;border-top:1px solid var(--line)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sm);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--md);border-color:#C6D8EA}
.news-cover{
  position:relative;aspect-ratio:16/9;overflow:hidden;
  background:linear-gradient(140deg,#DCE9F5 0%,#C3DBEE 100%);
}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-cover .badge{position:absolute;left:14px;top:14px;z-index:2;background:rgba(255,255,255,.94);color:var(--sky-deep)}
.news-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:1.05rem;line-height:1.55;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a{color:var(--ink)}
.news-body h3 a:hover{color:var(--sky-deep)}
.news-body p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line)}
.news-time{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums}
.empty-state{
  border:1.5px dashed #C6D8EA;border-radius:var(--r-card);
  padding:56px 24px;text-align:center;background:var(--bg);
}
.empty-state svg{width:40px;height:40px;color:#9FB6CC;margin:0 auto 14px}
.empty-state p{color:var(--muted);font-size:14.5px}
.empty-state strong{display:block;color:var(--ink);font-size:16px;margin-bottom:6px}

/* FAQ */
.faq{background:var(--bg);border-top:1px solid var(--line)}
.faq-grid{display:grid;grid-template-columns:4fr 7fr;gap:56px;align-items:start}
.faq-intro p{color:var(--muted);font-size:15px;line-height:1.85;margin-top:14px;max-width:340px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;background:none;border:none;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);min-height:56px;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--sky-deep)}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--soft);
  display:grid;place-items:center;color:var(--sky-deep);transition:transform .25s ease,background-color .25s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--sky);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{
  padding:0 4px 22px 18px;border-left:2px solid var(--sky);
  font-size:14.5px;color:var(--muted);line-height:1.9;
}

/* CTA / form */
.cta{background:#fff;border-top:1px solid var(--line);position:relative;overflow:hidden}
.cta::before{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background-image:radial-gradient(rgba(47,95,140,.14) 1px,transparent 1px);
  background-size:24px 24px;opacity:.6;pointer-events:none;
}
.cta-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.cta-list{margin-top:26px;display:grid;gap:14px}
.cta-list li{display:flex;gap:12px;font-size:15px;color:var(--body);line-height:1.7}
.cta-list svg{width:20px;height:20px;color:var(--cyan);flex:0 0 auto;margin-top:2px}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  padding:32px;box-shadow:var(--lg);
}
.form-card h3{font-size:1.25rem;margin-bottom:6px}
.form-card .form-note{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-input);
  padding:0 14px;height:48px;background:#fff;color:var(--body);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:auto;padding:12px 14px;resize:vertical;min-height:96px;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#9FB0C2}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--sky);box-shadow:0 0 0 3px rgba(47,95,140,.14);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--err);box-shadow:0 0 0 3px rgba(217,83,79,.12)}
.field .err-msg{display:none;font-size:12px;color:var(--err);margin-top:6px}
.field.has-error .err-msg{display:block}
.checkline{display:flex;align-items:flex-start;gap:10px;margin:6px 0 18px;font-size:13px;color:var(--muted);line-height:1.7}
.checkline input{width:17px;height:17px;margin-top:3px;flex:0 0 auto;accent-color:var(--sky)}
.form-alert{display:none;padding:12px 16px;border-radius:10px;font-size:13.5px;margin-bottom:16px}
.form-alert.is-ok{display:block;background:rgba(46,158,107,.1);color:#1E7A50;border:1px solid rgba(46,158,107,.25)}
.form-alert.is-err{display:block;background:rgba(217,83,79,.08);color:#B23B37;border:1px solid rgba(217,83,79,.24)}

/* Footer */
.site-footer{background:var(--foot);color:rgba(255,255,255,.72);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:#fff}
.footer-brand .brand-mark{background:linear-gradient(140deg,#2F5F8C 0%,#1B3A59 100%)}
.footer-brand .brand-name{font-size:18px;font-weight:700;color:#fff}
.footer-brand .brand-sub{color:rgba(255,255,255,.5)}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:340px}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600;letter-spacing:.04em}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color .2s ease}
.footer-col a:hover{color:var(--cyan)}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.68);display:flex;gap:10px;margin-bottom:12px;line-height:1.7}
.footer-contact svg{width:17px;height:17px;color:var(--cyan);flex:0 0 auto;margin-top:4px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom span{font-variant-numeric:tabular-nums}

/* Fixed bar */
.fixed-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -8px 24px rgba(16,26,43,.08);
  min-height:64px;display:flex;align-items:center;
  transform:translateY(110%);transition:transform .3s ease;
}
.fixed-bar.is-visible{transform:translateY(0)}
.fixed-bar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:10px 0;width:100%}
.fixed-bar-text{
  font-size:14px;color:var(--body);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.fixed-bar-text strong{color:var(--ink);font-weight:600}
.fixed-bar-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.page-pad{padding-bottom:76px}

/* Responsive */
@media (max-width:1280px){
  .nav-left,.nav-right{gap:18px}
  .brand{padding:0 18px}
}
@media (max-width:1024px){
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:grid}
  .header-inner{grid-template-columns:1fr auto 1fr;min-height:64px}
  .brand{grid-column:2;justify-self:center;padding:0}
  .hero-inner{grid-template-columns:1fr;gap:40px;min-height:0;padding:40px 0 56px}
  .hero-visual{aspect-ratio:16/9}
  .demo-grid{grid-template-columns:1fr;gap:32px}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .value-grid{grid-template-columns:1fr}
  .value-main{min-height:340px}
  .value-side{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:none}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line)}
  .quote-grid{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .hero h1{font-size:2.2rem}
  .hero-sub{font-size:16.5px}
  .value-side{grid-template-columns:1fr}
  .quote-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .fixed-bar{min-height:58px;padding-bottom:env(safe-area-inset-bottom)}
  .fixed-bar-text{font-size:13px}
  .page-pad{padding-bottom:88px}
}
@media (max-width:560px){
  .hero-actions .btn{width:100%}
  .stats{grid-template-columns:1fr}
  .stat{border-right:none;border-bottom:1px solid var(--line);padding:24px 20px}
  .stat:last-child{border-bottom:none}
  .stats .stat:nth-child(3){border-bottom:1px solid var(--line)}
  .form-card{padding:24px 20px}
  .fixed-bar-inner{gap:12px}
  .fixed-bar-text{display:none}
  .fixed-bar-actions{width:100%}
  .fixed-bar-actions .btn{width:100%}
  .demo-panel{left:12px;right:12px;bottom:12px;padding:14px 16px}
  .demo-thumb{width:88px;height:60px;right:12px;top:12px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --primary:#2F5F8C;
  --primary-dark:#234A70;
  --primary-light:#EAF2FA;
  --teal:#18B8B2;
  --accent:#F08A5D;
  --accent-dark:#D97046;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --surface-alt:#EAF2FA;
  --border:#DCE6F2;
  --ink:#162234;
  --text:#2B3A4D;
  --muted:#6B7C91;
  --success:#2E9E6B;
  --danger:#D9534F;
  --footer-bg:#101A2B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:12px;
  --shadow-sm:0 2px 8px rgba(16,26,43,.06);
  --shadow-md:0 8px 24px rgba(16,26,43,.08);
  --shadow-lg:0 18px 40px rgba(16,26,43,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  overflow-x:hidden;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(47,95,140,.18);color:var(--ink)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--teal);margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--teal)}
.section-head h2{font-size:clamp(1.5rem,2.4vw,2.05rem)}
.section-head p{font-size:.95rem;color:var(--muted);margin-top:10px;max-width:640px}
.more-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:.9375rem;font-weight:600;white-space:nowrap;transition:gap .2s,color .2s}
.more-link:hover{gap:10px;color:var(--primary-dark)}
.more-link svg{width:16px;height:16px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:.9375rem;font-weight:600;line-height:1.2;cursor:pointer;
  transition:transform .2s,background .2s,color .2s,border-color .2s,box-shadow .2s;
}
.btn svg{width:17px;height:17px}
.btn:active{transform:translateY(0)}
.btn:focus-visible{outline:3px solid rgba(47,95,140,.28);outline-offset:2px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(47,95,140,.22)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 20px rgba(47,95,140,.26)}
.btn-ghost{background:#fff;color:var(--primary);border-color:#C7D8EA}
.btn-ghost:hover{background:var(--primary-light);border-color:var(--primary);transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 14px rgba(240,138,93,.26)}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--primary-dark)}
.btn-light:hover{background:#EAF2FA;transform:translateY(-2px)}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:120;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .25s}
.site-header.is-scrolled{box-shadow:var(--shadow-sm)}
.nav-wrap{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;column-gap:40px;min-height:76px}
.nav-left{justify-self:end;display:flex;align-items:center;gap:26px}
.nav-right{justify-self:start;display:flex;align-items:center;gap:26px}
.nav-link{position:relative;display:inline-block;padding:7px 4px;font-size:.9375rem;color:var(--text);border-radius:6px;transition:color .2s,background .2s}
.nav-link::after{content:"";position:absolute;left:2px;right:2px;bottom:-1px;height:2px;border-radius:2px;background:var(--primary);transform:scaleX(0);transform-origin:center;transition:transform .22s}
.nav-link:hover{color:var(--primary);background:var(--primary-light)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.brand{justify-self:center;display:inline-flex;align-items:center;gap:10px;padding:6px 12px;border-radius:12px;transition:background .2s}
.brand:hover{background:var(--primary-light)}
.brand-mark{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;color:var(--primary);flex:none}
.brand-mark svg{width:26px;height:26px}
.brand-name{font-size:1.125rem;font-weight:700;color:var(--ink);white-space:nowrap;letter-spacing:.01em}
.nav-toggle{display:none;grid-column:3;justify-self:end;width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:10px;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;transition:border-color .2s,background .2s}
.nav-toggle:hover{border-color:var(--primary);background:var(--primary-light)}
.nav-toggle:focus-visible{outline:3px solid rgba(47,95,140,.28);outline-offset:2px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s,opacity .2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.progress-track{position:absolute;left:0;right:0;bottom:-1px;height:3px;background:transparent;pointer-events:none}
.progress-bar{height:100%;width:0;background:linear-gradient(90deg,var(--primary),var(--teal));border-radius:0 2px 2px 0;transition:width .08s linear}

/* ---------- mobile drawer ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(16,26,43,.42);z-index:150;opacity:0;pointer-events:none;transition:opacity .28s}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.mobile-drawer{position:fixed;top:0;left:0;right:0;z-index:200;background:#fff;padding:18px 20px 26px;border-radius:0 0 22px 22px;box-shadow:var(--shadow-lg);transform:translateY(-102%);transition:transform .32s cubic-bezier(.4,0,.2,1);max-height:88vh;overflow-y:auto}
.mobile-drawer.is-open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--border)}
.drawer-close{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--muted);cursor:pointer;transition:.2s}
.drawer-close:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.drawer-close svg{width:18px;height:18px}
.drawer-nav{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding-top:16px}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;padding:13px 14px;border:1px solid var(--border);border-radius:12px;font-size:.9375rem;color:var(--text);background:#fff;transition:.2s}
.drawer-nav a:hover,.drawer-nav a:focus-visible{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.drawer-nav a.is-active{border-color:var(--primary);color:var(--primary);background:var(--primary-light);font-weight:600}

/* ---------- breadcrumb ---------- */
.article-hero{padding:34px 0 0}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:2px;font-size:13.5px;color:var(--muted)}
.breadcrumb a{color:var(--muted);transition:color .2s}
.breadcrumb a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .sep{margin:0 7px;color:#B7C5D5;font-style:normal}
.breadcrumb .current{color:var(--text);font-weight:500}

/* ---------- article head ---------- */
.article-head{max-width:820px;margin:0 auto;padding-top:26px}
.badge{display:inline-flex;align-items:center;padding:5px 14px;border-radius:999px;background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:600;line-height:1.6}
.article-head h1{font-size:clamp(1.75rem,3.2vw,2.55rem);margin:16px 0 16px;letter-spacing:-.01em;line-height:1.4}
.article-excerpt{font-size:1.0625rem;line-height:1.85;color:#485A70;margin-bottom:22px;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;padding:15px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);font-size:13.5px;color:var(--muted)}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta svg{width:15px;height:15px;color:#9AAEC3}
.share-btn{margin-left:auto;display:inline-flex;align-items:center;gap:7px;padding:7px 15px;border:1px solid var(--border);border-radius:999px;background:#fff;color:var(--primary);font-size:13px;cursor:pointer;transition:.2s}
.share-btn:hover{border-color:var(--primary);background:var(--primary-light)}
.share-btn:focus-visible{outline:3px solid rgba(47,95,140,.28);outline-offset:2px}
.share-btn svg{width:15px;height:15px;color:var(--primary)}
.article-cover{max-width:1000px;margin:34px auto 0;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-md);aspect-ratio:21/9;background:linear-gradient(135deg,#EAF2FA,#D3E3F2);position:relative}
.article-cover img{width:100%;height:100%;object-fit:cover}
.img-fallback{background:radial-gradient(circle at 24% 28%,rgba(47,95,140,.18) 0 2px,transparent 2px),radial-gradient(circle at 72% 62%,rgba(24,184,178,.22) 0 2px,transparent 2px),linear-gradient(135deg,#EAF2FA,#D3E3F2);background-size:auto,auto,cover}

/* ---------- article body ---------- */
.article-main{padding:56px 0 0}
.article-body{max-width:800px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--text)}
.article-body p{margin:0 0 1.1em}
.article-body h2{font-size:clamp(1.35rem,2.2vw,1.7rem);margin:2em 0 .7em;line-height:1.45}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-size:1.15rem;margin:1.7em 0 .6em;font-weight:600}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;transition:color .2s}
.article-body a:hover{color:var(--primary-dark)}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.1em}
.article-body ul li{list-style:disc}
.article-body ol li{list-style:decimal}
.article-body li{margin:.4em 0}
.article-body ul li::marker{color:var(--teal)}
.article-body ol li::marker{color:var(--primary);font-weight:600}
.article-body blockquote{margin:1.6em 0;padding:16px 22px;border-left:3px solid var(--teal);background:var(--primary-light);border-radius:0 12px 12px 0;color:#33465C;font-size:1rem}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:1.6em auto;box-shadow:var(--shadow-sm);height:auto}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:.85rem;color:var(--muted);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:.94rem;margin:1.6em 0;display:block;overflow-x:auto;white-space:nowrap}
.article-body th,.article-body td{border:1px solid var(--border);padding:11px 15px;text-align:left}
.article-body th{background:var(--surface-alt);color:var(--ink);font-weight:600}
.article-body hr{border:0;border-top:1px solid var(--border);margin:2.2em 0}
.article-body code{background:var(--surface-alt);padding:2px 6px;border-radius:6px;font-size:.9em;color:var(--primary-dark)}
.article-tags{max-width:800px;margin:44px auto 0;padding-top:26px;border-top:1px solid var(--border);display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.article-tags .tag-label{font-size:13.5px;color:var(--muted);margin-right:4px}
.tag{display:inline-flex;align-items:center;padding:6px 15px;border-radius:999px;background:#fff;border:1px solid var(--border);font-size:13px;color:var(--muted);transition:.2s}
.tag:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.back-row{max-width:800px;margin:30px auto 0;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- empty state ---------- */
.article-empty{max-width:660px;margin:0 auto;text-align:center;padding:60px 30px;background:#fff;border:1px dashed var(--border);border-radius:20px;box-shadow:var(--shadow-sm)}
.article-empty .empty-icon{width:56px;height:56px;margin:0 auto 18px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--primary-light);color:var(--primary)}
.article-empty .empty-icon svg{width:26px;height:26px}
.article-empty h2{font-size:1.35rem;margin-bottom:10px}
.article-empty p{color:var(--muted);font-size:.95rem;margin-bottom:24px}

/* ---------- cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.info-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s,border-color .25s}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#C7D8EA}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#E4EEF8,#CFDFF0)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.info-card:hover .card-media img{transform:scale(1.05)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:1.0625rem;font-weight:600;line-height:1.55;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{font-size:.9rem;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:10px;font-size:13px;color:var(--muted)}
.card-link{display:inline-flex;align-items:center;gap:5px;color:var(--primary);font-weight:600;font-size:13.5px;transition:gap .2s}
.info-card:hover .card-link{gap:9px}
.card-link svg{width:14px;height:14px}
.chip{display:inline-flex;align-items:center;padding:3px 11px;border-radius:999px;background:var(--primary-light);color:var(--primary);font-size:12px;font-weight:600}

/* ---------- cta ---------- */
.cta-section{padding:88px 0 0}
.cta-inner{position:relative;overflow:hidden;border-radius:24px;padding:52px 56px;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;background:linear-gradient(120deg,#234A70 0%,#2F5F8C 55%,#1E8F96 100%);color:#fff;box-shadow:var(--shadow-lg)}
.cta-inner::after{content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.16) 0 2px,transparent 2px);background-size:26px 26px;opacity:.7;pointer-events:none}
.cta-inner h2{color:#fff;font-size:clamp(1.45rem,2.4vw,1.95rem);margin-bottom:14px}
.cta-inner p{color:rgba(255,255,255,.86);font-size:.975rem;line-height:1.8;max-width:560px}
.cta-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:20px}
.cta-points span{display:inline-flex;align-items:center;gap:7px;font-size:.9rem;color:rgba(255,255,255,.9)}
.cta-points svg{width:15px;height:15px;color:#7FE3DE}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:flex-start;position:relative;z-index:2}
.cta-actions .btn{width:100%}
.cta-note{font-size:.82rem;color:rgba(255,255,255,.68)}

/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg);color:#B9C6D6;margin-top:96px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.25fr;gap:40px;padding-bottom:46px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{color:var(--teal)}
.footer-brand .brand-name{color:#fff;font-size:1.05rem;display:block}
.footer-brand .brand-sub{display:block;font-size:10.5px;letter-spacing:.16em;color:#6F8299;margin-top:2px}
.site-footer p{font-size:.88rem;line-height:1.85;color:#9FB0C4;max-width:340px}
.footer-col h4{color:#fff;font-size:.95rem;font-weight:600;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:.9rem;color:#B9C6D6;transition:color .2s}
.footer-col a:hover{color:var(--teal)}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:.86rem;line-height:1.65;color:#B9C6D6}
.footer-contact svg{width:17px;height:17px;flex:none;margin-top:3px;color:#6F8299}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0 92px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:.82rem;color:#7C8EA3}
.footer-bottom a{color:#8FA2B8}
.footer-bottom a:hover{color:var(--teal)}

/* ---------- sticky cta ---------- */
.sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:110;background:#fff;border-top:1px solid var(--border);box-shadow:0 -6px 24px rgba(16,26,43,.09);transform:translateY(112%);transition:transform .35s ease;padding-bottom:env(safe-area-inset-bottom)}
.sticky-cta.is-visible{transform:translateY(0)}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;padding-top:8px;padding-bottom:8px}
.sticky-text{font-size:.9rem;color:var(--muted);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.sticky-text strong{color:var(--ink);font-weight:600}
.sticky-cta .btn{padding:10px 22px;font-size:.9rem;flex:none}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .nav-left,.nav-right{gap:18px}
  .nav-link{font-size:.9rem}
}
@media (max-width:1000px){
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:flex}
  .nav-wrap{min-height:64px}
  .brand-name{font-size:1.05rem}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .cta-inner{grid-template-columns:1fr;padding:42px 36px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:60px 0}
  .article-hero{padding-top:24px}
  .article-head{padding-top:20px}
  .article-head h1{font-size:1.65rem}
  .article-excerpt{font-size:1rem}
  .article-cover{aspect-ratio:16/9;margin-top:24px;border-radius:14px}
  .article-main{padding-top:40px}
  .article-body{font-size:16px;line-height:1.85}
  .article-meta{gap:8px 18px;font-size:12.5px}
  .share-btn{margin-left:0}
  .card-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .cta-section{padding:60px 0 0}
  .cta-inner{padding:34px 24px;border-radius:20px}
  .cta-actions .btn{width:100%}
  .site-footer{margin-top:64px;padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{padding-bottom:96px;flex-direction:column;align-items:flex-start}
  .sticky-inner{min-height:58px}
  .sticky-text{font-size:.82rem}
  .sticky-cta .btn{padding:9px 16px;font-size:.85rem}
}
@media (max-width:560px){
  .article-head h1{font-size:1.5rem;line-height:1.42}
  .article-excerpt{-webkit-line-clamp:3}
  .drawer-nav{grid-template-columns:1fr}
  .back-row .btn{width:100%}
  .cta-points{flex-direction:column;gap:10px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --primary:#2F5F8C;
  --primary-dark:#234A70;
  --primary-soft:#EAF2FA;
  --accent:#18B8B2;
  --cta:#F08A5D;
  --cta-dark:#D97046;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --border:#DCE6F2;
  --heading:#162234;
  --text:#2B3A4D;
  --muted:#6B7C91;
  --success:#2E9E6B;
  --error:#D9534F;
  --footer-bg:#101A2B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:12px;
  --shadow-sm:0 2px 8px rgba(16,26,43,.06);
  --shadow-md:0 8px 24px rgba(16,26,43,.08);
  --shadow-lg:0 18px 40px rgba(16,26,43,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-bottom:72px;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
img{max-width:100%;height:auto;display:block}
button{font-family:inherit}
input,textarea,select{font-family:inherit;font-size:16px;color:var(--text)}
::selection{background:rgba(47,95,140,.16)}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(47,95,140,.25);border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.04em;color:var(--primary);
  font-weight:600;text-transform:uppercase;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--primary);border-radius:2px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head h2{
  font-size:clamp(1.75rem,2.6vw,2.25rem);
  line-height:1.3;color:var(--heading);font-weight:700;letter-spacing:0;
}
.section-head p{color:var(--muted);font-size:15px;max-width:560px;margin-top:10px}
.link-more{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-weight:600;font-size:15px}
.link-more svg{width:16px;height:16px;transition:transform .22s var(--ease)}
.link-more:hover svg{transform:translateX(4px)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:none;box-shadow:var(--shadow-sm)}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--border)}
.btn-ghost:hover{background:var(--primary-soft);border-color:rgba(47,95,140,.28);transform:translateY(-2px)}
.btn-ghost:active{transform:none}
.btn-cta{background:var(--cta);color:#fff;box-shadow:0 6px 18px rgba(240,138,93,.28)}
.btn-cta:hover{background:var(--cta-dark);transform:translateY(-2px)}
.btn-cta:active{transform:none}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none}

/* ===== 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--primary-soft);color:var(--primary-dark);
  font-size:12.5px;font-weight:600;line-height:1.6;white-space:nowrap;
}
.badge--mint{background:rgba(24,184,178,.12);color:#127F7B}
.badge--line{background:#fff;border:1px solid var(--border);color:var(--muted);font-weight:500}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .28s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-md)}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:28px;
  height:76px;
}
.nav-left{display:flex;align-items:center;gap:26px;justify-content:flex-end}
.nav-right{display:flex;align-items:center;gap:26px;justify-content:flex-start}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--text);
  padding:6px 10px;border-radius:8px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:10px;right:10px;bottom:0;
  height:2px;border-radius:2px;background:var(--primary);
  transform:scaleX(0);transform-origin:center;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--primary-dark);background:var(--primary-soft)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.brand{
  grid-column:2;
  display:flex;align-items:center;gap:12px;
  padding:0 24px;
  justify-self:center;
}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(145deg,var(--primary),#3C7BB0);
  color:#fff;box-shadow:0 6px 16px rgba(47,95,140,.28);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:19px;font-weight:700;color:var(--heading);letter-spacing:.02em}
.brand-sub{font-size:10.5px;letter-spacing:.22em;color:var(--muted);font-weight:500;margin-top:3px}
.nav-toggle{
  display:none;grid-column:3;justify-self:end;
  width:44px;height:44px;border-radius:12px;
  background:#fff;border:1px solid var(--border);color:var(--primary-dark);
  align-items:center;justify-content:center;cursor:pointer;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{background:var(--primary-soft);border-color:rgba(47,95,140,.3)}
.nav-toggle svg{width:22px;height:22px}

/* ===== 移动抽屉 ===== */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,26,43,.42);
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s;
  z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:#fff;z-index:95;
  transform:translateX(100%);
  transition:transform .3s var(--ease);
  display:flex;flex-direction:column;
  box-shadow:var(--shadow-lg);
}
.drawer.is-open{transform:none}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;border-bottom:1px solid var(--border);
}
.drawer-head .brand{padding:0;justify-self:start}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--border);
  background:#fff;color:var(--primary-dark);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-close:hover{background:var(--primary-soft)}
.drawer-close svg{width:20px;height:20px}
.drawer-nav{padding:14px 12px;overflow-y:auto}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 14px;border-radius:10px;font-size:15.5px;font-weight:500;color:var(--text);
}
.drawer-nav a:hover{background:var(--primary-soft);color:var(--primary-dark)}
.drawer-nav a.is-active{color:var(--primary);font-weight:600;background:var(--primary-soft)}
.drawer-nav a span.dot{width:6px;height:6px;border-radius:50%;background:var(--primary);opacity:0}
.drawer-nav a.is-active span.dot{opacity:1}
.drawer-foot{padding:18px 22px 26px;border-top:1px solid var(--border);font-size:13px;color:var(--muted)}

/* ===== 面包屑 ===== */
.breadcrumb{padding:20px 0 0}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li::after{content:"/";color:#C3CFDD}
.breadcrumb li:last-child::after{display:none}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--text);font-weight:500}

/* ===== Hero ===== */
.hero{padding:36px 0 0}
.hero-grid{
  display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;
}
.hero-copy h1{
  font-size:clamp(2.2rem,4vw,3.35rem);
  line-height:1.22;font-weight:700;color:var(--heading);
  margin:16px 0 0;letter-spacing:0;
}
.hero-copy h1 em{font-style:normal;color:var(--primary)}
.hero-sub{
  font-size:17px;line-height:1.85;color:var(--muted);
  margin-top:18px;max-width:560px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-points{
  display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:28px;
  padding-top:24px;border-top:1px dashed var(--border);
}
.hero-points li{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--text);font-weight:500;
}
.hero-points svg{width:17px;height:17px;color:var(--accent);flex:0 0 17px}
.hero-visual{position:relative}
.hero-visual .frame{
  position:relative;border-radius:20px;overflow:hidden;
  box-shadow:var(--shadow-lg);background:var(--primary-soft);
  aspect-ratio:4/3;
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual .frame::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 82% 16%,rgba(255,255,255,.55) 0 1.5px,transparent 2px),
    radial-gradient(circle at 68% 34%,rgba(255,255,255,.4) 0 1.5px,transparent 2px),
    radial-gradient(circle at 88% 58%,rgba(255,255,255,.45) 0 1.5px,transparent 2px),
    linear-gradient(180deg,rgba(22,34,52,0) 52%,rgba(16,26,43,.55) 100%);
  pointer-events:none;
}
.visual-tag{
  position:absolute;left:18px;bottom:18px;z-index:2;
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.92);color:var(--primary-dark);
  padding:8px 14px;border-radius:999px;font-size:13px;font-weight:600;
  box-shadow:var(--shadow-sm);backdrop-filter:blur(4px);
}
.visual-tag svg{width:15px;height:15px;color:var(--accent)}

/* ===== 信息条 ===== */
.infobar{
  margin-top:48px;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  display:grid;grid-template-columns:repeat(4,1fr);
  overflow:hidden;
}
.infobar li{
  padding:22px 24px;
  display:flex;gap:14px;align-items:flex-start;
  border-right:1px solid var(--border);
}
.infobar li:last-child{border-right:none}
.infobar .ico{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;
  background:var(--primary-soft);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;
}
.infobar .ico svg{width:19px;height:19px}
.infobar strong{display:block;font-size:14.5px;color:var(--heading);font-weight:600;line-height:1.5}
.infobar span{display:block;font-size:13px;color:var(--muted);margin-top:4px;line-height:1.6}

/* ===== 资讯条目列表 ===== */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-row{
  display:flex;align-items:center;gap:28px;justify-content:space-between;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:26px 28px;box-shadow:var(--shadow-sm);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.news-row:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#CBDCEF}
.news-main{min-width:0}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.news-time{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.news-title{
  font-size:19px;font-weight:600;color:var(--heading);line-height:1.5;
  margin-top:10px;
}
.news-row:hover .news-title a{color:var(--primary-dark)}
.news-desc{
  font-size:14.5px;color:var(--muted);line-height:1.8;margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-link{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:600;color:var(--primary);
  padding:10px 16px;border-radius:var(--radius-btn);border:1px solid var(--border);
  background:#fff;transition:all .22s var(--ease);
}
.news-link svg{width:15px;height:15px;transition:transform .22s var(--ease)}
.news-row:hover .news-link{background:var(--primary);color:#fff;border-color:var(--primary)}
.news-row:hover .news-link svg{transform:translateX(3px)}

/* ===== 图文两栏 ===== */
.split{
  display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center;
}
.split-media{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--shadow-lg);aspect-ratio:4/3;background:var(--primary-soft)}
.split-media img{width:100%;height:100%;object-fit:cover}
.media-note{
  position:absolute;left:18px;right:18px;bottom:18px;
  background:rgba(255,255,255,.94);border-radius:14px;
  padding:14px 16px;box-shadow:var(--shadow-sm);
  display:flex;align-items:center;gap:12px;
}
.media-note .ico{
  width:34px;height:34px;flex:0 0 34px;border-radius:9px;
  background:rgba(24,184,178,.14);color:#127F7B;
  display:inline-flex;align-items:center;justify-content:center;
}
.media-note .ico svg{width:18px;height:18px}
.media-note strong{display:block;font-size:13.5px;color:var(--heading);font-weight:600}
.media-note span{display:block;font-size:12.5px;color:var(--muted);margin-top:2px}
.split-body h2{
  font-size:clamp(1.75rem,2.6vw,2.25rem);line-height:1.35;
  color:var(--heading);font-weight:700;margin-top:16px;
}
.split-body p{color:var(--text);font-size:15.5px;line-height:1.9;margin-top:16px}
.check-list{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text);line-height:1.75}
.check-list .tick{
  width:22px;height:22px;flex:0 0 22px;border-radius:50%;
  background:rgba(47,95,140,.1);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;margin-top:2px;
}
.check-list .tick svg{width:13px;height:13px}
.check-list strong{color:var(--heading);font-weight:600}
.split-body .btn{margin-top:30px}

/* ===== FAQ ===== */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-intro h2{
  font-size:clamp(1.75rem,2.6vw,2.25rem);line-height:1.35;
  color:var(--heading);font-weight:700;margin-top:16px;
}
.faq-intro p{color:var(--muted);font-size:15px;line-height:1.9;margin-top:16px}
.faq-intro .tip{
  margin-top:26px;padding:18px 20px;border-radius:14px;
  background:var(--primary-soft);border:1px solid rgba(47,95,140,.12);
  font-size:14px;color:var(--primary-dark);line-height:1.8;
}
.faq-list{display:flex;flex-direction:column}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:first-child{border-top:1px solid var(--border)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;min-height:56px;
  font-size:16px;font-weight:600;color:var(--heading);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary)}
.faq-item summary .plus{
  width:26px;height:26px;flex:0 0 26px;position:relative;
  border-radius:50%;background:var(--primary-soft);color:var(--primary);
  transition:transform .26s var(--ease),background .26s var(--ease),color .26s var(--ease);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-item summary .plus::before{width:12px;height:2px}
.faq-item summary .plus::after{width:2px;height:12px;transition:opacity .24s var(--ease)}
.faq-item[open] summary{color:var(--primary-dark)}
.faq-item[open] summary .plus{background:var(--primary);color:#fff;transform:rotate(180deg)}
.faq-item[open] summary .plus::after{opacity:0}
.faq-answer{padding:0 4px 22px;border-left:2px solid rgba(47,95,140,.22);padding-left:16px;margin-left:2px}
.faq-answer p{font-size:15px;line-height:1.9;color:var(--muted)}

/* ===== 底部转化 ===== */
.cta-section{padding:80px 0 96px}
.cta-card{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#FFFFFF 0%,#F2F7FC 100%);
  border:1px solid var(--border);border-radius:24px;
  box-shadow:var(--shadow-lg);
  display:grid;grid-template-columns:6fr 6fr;gap:48px;
  padding:52px 52px;
}
.cta-card::before{
  content:"";position:absolute;right:-60px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,95,140,.10) 0%,rgba(47,95,140,0) 68%);
  pointer-events:none;
}
.cta-copy h2{font-size:clamp(1.65rem,2.4vw,2.1rem);line-height:1.36;color:var(--heading);font-weight:700}
.cta-copy p{color:var(--muted);font-size:15.5px;line-height:1.9;margin-top:16px}
.cta-copy .check-list{margin-top:22px}
.form-card{position:relative;z-index:1;background:#fff;border:1px solid var(--border);border-radius:18px;padding:26px;box-shadow:var(--shadow-sm)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--heading);margin-bottom:7px}
.field label .req{color:var(--error);margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--border);border-radius:var(--radius-input);
  background:#FBFDFF;color:var(--text);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#9AABBE}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);background:#fff;
  box-shadow:0 0 0 3px rgba(47,95,140,.14);
}
.field.has-error input,.field.has-error textarea{border-color:var(--error);background:#FFF9F8;box-shadow:0 0 0 3px rgba(217,83,79,.12)}
.err-msg{display:none;font-size:12px;color:var(--error);margin-top:6px;line-height:1.6}
.field.has-error .err-msg{display:block}
.check-line{display:flex;align-items:flex-start;gap:10px;margin:6px 0 18px;font-size:13px;color:var(--muted);line-height:1.7}
.check-line input{width:16px;height:16px;flex:0 0 16px;margin-top:3px;accent-color:var(--primary)}
.check-line a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.form-card .btn{width:100%}
.form-alert{
  display:none;margin-top:14px;padding:12px 14px;border-radius:10px;
  font-size:13.5px;line-height:1.7;
}
.form-alert.is-ok{display:block;background:rgba(46,158,107,.1);color:#1F7A51;border:1px solid rgba(46,158,107,.24)}
.form-alert.is-bad{display:block;background:rgba(217,83,79,.08);color:#B23B37;border:1px solid rgba(217,83,79,.22)}

/* ===== 页脚 ===== */
.site-footer{background:var(--footer-bg);color:#B9C6D6;padding:64px 0 0;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-mark{background:linear-gradient(145deg,#2F5F8C,#18B8B2);box-shadow:none}
.footer-brand .brand-name{color:#fff;font-size:18px;font-weight:700;display:block}
.footer-brand .brand-sub{color:#7F92A8;font-size:10.5px;letter-spacing:.22em;display:block;margin-top:3px}
.site-footer p{line-height:1.9;color:#93A5B9;font-size:14px;max-width:360px}
.footer-col h4{font-size:15px;color:#fff;font-weight:600;margin-bottom:18px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{color:#B9C6D6;font-size:14.5px}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;line-height:1.7;color:#B9C6D6;font-size:14px}
.footer-contact svg{width:17px;height:17px;flex:0 0 17px;margin-top:3px;color:#6E86A0}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:#7F92A8;
}
.footer-bottom a{color:#93A5B9}
.footer-bottom a:hover{color:var(--accent)}

/* ===== 固定转化条 ===== */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--border);
  box-shadow:0 -8px 24px rgba(16,26,43,.08);
  transform:translateY(100%);
  transition:transform .32s var(--ease);
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-bar.is-visible{transform:none}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.sticky-text{
  font-size:14.5px;color:var(--text);font-weight:500;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.sticky-text strong{color:var(--primary-dark);font-weight:700}
.sticky-inner .btn{height:42px;padding:0 22px;font-size:14.5px}

/* ===== 响应式 ===== */
@media (max-width:1280px){
  .container{padding:0 22px}
  .nav-left,.nav-right{gap:18px}
  .hero-grid{gap:34px}
  .split,.faq-wrap{gap:40px}
}
@media (max-width:1024px){
  .nav-wrap{height:64px;gap:14px}
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:inline-flex}
  .brand{padding:0}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{order:2}
  .hero-visual .frame{aspect-ratio:16/10}
  .infobar{grid-template-columns:repeat(2,1fr)}
  .infobar li:nth-child(2){border-right:none}
  .infobar li:nth-child(1),.infobar li:nth-child(2){border-bottom:1px solid var(--border)}
  .split{grid-template-columns:1fr;gap:32px}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .cta-card{grid-template-columns:1fr;padding:40px 36px;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  body{padding-bottom:64px}
  .container{padding:0 20px}
  .section{padding:52px 0}
  .section--tight{padding:44px 0}
  .hero{padding:24px 0 0}
  .hero-sub{font-size:16px}
  .hero-actions{gap:12px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-points{gap:10px 20px}
  .infobar{grid-template-columns:1fr;margin-top:34px}
  .infobar li{border-right:none;border-bottom:1px solid var(--border);padding:18px 20px}
  .infobar li:last-child{border-bottom:none}
  .news-row{flex-direction:column;align-items:flex-start;gap:16px;padding:22px 20px}
  .news-link{width:100%;justify-content:center}
  .news-title{font-size:17.5px}
  .cta-card{padding:32px 22px;border-radius:20px}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  .sticky-bar{transform:none}
  .sticky-inner{height:58px;gap:12px}
  .sticky-text{font-size:13px}
  .sticky-inner .btn{height:38px;padding:0 16px;font-size:13.5px}
  .split-body .btn{width:100%}
}
@media (max-width:560px){
  .brand-name{font-size:17px}
  .brand-mark{width:36px;height:36px;flex:0 0 36px;border-radius:10px}
  .hero-copy h1{font-size:clamp(1.9rem,7.6vw,2.4rem)}
  .section-head{margin-bottom:26px}
  .news-desc{-webkit-line-clamp:3}
  .split-media{aspect-ratio:16/11}
  .media-note{left:12px;right:12px;bottom:12px;padding:12px}
  .form-card{padding:20px}
}

/* roulang page: category2 */
:root{
  --primary:#2F5F8C;
  --primary-dark:#234A70;
  --primary-soft:#EAF2FA;
  --cyan:#18B8B2;
  --orange:#F08A5D;
  --orange-dark:#D97046;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --surface-alt:#EAF2FA;
  --border:#DCE6F2;
  --ink:#162234;
  --text:#2B3A4D;
  --muted:#6B7C91;
  --success:#2E9E6B;
  --error:#D9534F;
  --footer:#101A2B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:12px;
  --shadow-sm:0 2px 8px rgba(16,26,43,.06);
  --shadow-md:0 8px 24px rgba(16,26,43,.08);
  --shadow-lg:0 18px 40px rgba(16,26,43,.12);
  --section-y:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  padding-bottom:64px;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.28;letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(47,95,140,.25);outline-offset:2px;border-radius:6px;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;z-index:200;}
.skip-link:focus{left:0;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;
  border:1px solid transparent;transition:transform .2s ease,background .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn svg{width:16px;height:16px;flex:none;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--primary-soft);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-accent{background:var(--orange);color:#fff;box-shadow:var(--shadow-sm);}
.btn-accent:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-accent:active{transform:translateY(0);}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none!important;box-shadow:none;}
.btn-block{width:100%;}

/* ---------- 标签 / 徽章 ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-size:12.5px;font-weight:600;letter-spacing:.02em;}
.tag-outline{background:transparent;border:1px solid var(--border);color:var(--muted);font-weight:500;}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:600;color:var(--primary);}
.eyebrow::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--primary);display:block;}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .25s ease;}
.site-header.is-scrolled{box-shadow:var(--shadow-md);}
.header-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:24px;
  max-width:1200px;margin:0 auto;padding:0 24px;height:76px;
}
.nav-left,.nav-right{display:flex;align-items:center;gap:2px;}
.nav-left{justify-content:flex-end;}
.nav-right{justify-content:flex-start;}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:15px;color:var(--text);transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;
  background:transparent;transition:background .2s ease;
}
.nav-link:hover{color:var(--primary-dark);background:var(--primary-soft);}
.nav-link:hover::after{background:var(--primary);}
.nav-link.is-active{color:var(--primary);font-weight:600;}
.nav-link.is-active::after{background:var(--primary);}
.brand{display:inline-flex;align-items:center;gap:10px;justify-self:center;padding:0 36px;}
.brand-mark{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;color:var(--primary);}
.brand-mark svg{width:26px;height:26px;}
.brand-name{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:42px;height:42px;
  border-radius:10px;border:1px solid var(--border);color:var(--primary);background:#fff;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--primary-soft);border-color:#C6D8EA;}
.nav-toggle svg{width:20px;height:20px;}

/* ---------- 移动抽屉 ---------- */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(16,26,43,.45);z-index:90;
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.drawer-overlay.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(330px,86vw);background:#fff;z-index:100;
  transform:translateX(100%);transition:transform .3s ease;display:flex;flex-direction:column;
  box-shadow:var(--shadow-lg);
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:20px;border-bottom:1px solid var(--border);}
.drawer-head .brand-name{font-size:17px;}
.drawer-close{
  width:36px;height:36px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--muted);border:1px solid var(--border);transition:background .2s,color .2s;
}
.drawer-close:hover{background:var(--primary-soft);color:var(--primary);}
.drawer-nav{padding:12px 10px;overflow-y:auto;display:flex;flex-direction:column;gap:2px;}
.drawer-nav a{
  padding:13px 14px;border-radius:10px;font-size:15.5px;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;transition:background .2s,color .2s;
}
.drawer-nav a::after{content:"›";color:#B6C6D8;font-size:18px;line-height:1;}
.drawer-nav a:hover{background:var(--primary-soft);color:var(--primary-dark);}
.drawer-nav a.is-active{color:var(--primary);font-weight:600;background:var(--primary-soft);}
.drawer-foot{margin-top:auto;padding:20px;border-top:1px solid var(--border);}
.drawer-foot p{font-size:13px;color:var(--muted);line-height:1.7;}

/* ---------- 首屏 ---------- */
.hero{position:relative;padding:52px 0 76px;background:linear-gradient(180deg,#F7F9FC 0%,#FFFFFF 100%);overflow:hidden;}
.hero::before{
  content:"";position:absolute;top:-60px;right:-40px;width:520px;height:420px;pointer-events:none;
  background-image:radial-gradient(circle,rgba(47,95,140,.40) 1.2px,transparent 1.4px);
  background-size:26px 26px;opacity:.35;
  -webkit-mask-image:radial-gradient(circle at 70% 30%,#000 0%,transparent 72%);
  mask-image:radial-gradient(circle at 70% 30%,#000 0%,transparent 72%);
}
.breadcrumb{margin-bottom:26px;position:relative;z-index:1;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#C2D0DF;}
.breadcrumb a{color:var(--muted);transition:color .2s;}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .current{color:var(--ink);font-weight:500;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center;position:relative;z-index:1;}
.hero h1{font-size:clamp(2rem,3.6vw,2.95rem);margin:18px 0 18px;}
.hero h1 .hl{color:var(--primary);}
.hero-lead{font-size:18px;line-height:1.8;color:var(--text);max-width:34em;}
.hero-lead+.hero-lead{margin-top:14px;font-size:16px;color:var(--muted);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:34px;padding-top:26px;border-top:1px solid var(--border);}
.hero-point{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);}
.hero-point svg{width:17px;height:17px;color:var(--cyan);flex:none;}
.hero-figure{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--shadow-lg);background:linear-gradient(135deg,#DCE9F5 0%,#EAF2FA 100%);}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.hero-figure::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 82% 18%,rgba(24,184,178,.55) 0 2px,transparent 2.4px),
    radial-gradient(circle at 24% 74%,rgba(255,255,255,.65) 0 1.6px,transparent 2px),
    linear-gradient(180deg,rgba(16,26,43,0) 55%,rgba(16,26,43,.34) 100%);
}
.figure-caption{
  position:absolute;left:18px;bottom:16px;z-index:2;color:#fff;font-size:13.5px;
  display:inline-flex;align-items:center;gap:8px;text-shadow:0 1px 6px rgba(16,26,43,.5);
}
.figure-caption::before{content:"";width:16px;height:2px;background:var(--cyan);border-radius:2px;display:block;}

/* ---------- 指标带 ---------- */
.metrics-band{
  background:var(--ink);color:#fff;padding:64px 0;
  background-image:
    radial-gradient(circle at 12% 28%,rgba(255,255,255,.16) 0 1.2px,transparent 1.6px),
    radial-gradient(circle at 76% 70%,rgba(24,184,178,.42) 0 1.6px,transparent 2px),
    radial-gradient(circle at 45% 12%,rgba(255,255,255,.10) 0 1px,transparent 1.4px);
  background-size:160px 160px,240px 240px,190px 190px;
}
.metrics-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:40px;}
.metrics-head h2{color:#fff;font-size:clamp(1.5rem,2.2vw,1.95rem);}
.metrics-head p{color:rgba(255,255,255,.68);font-size:15px;max-width:46em;margin-top:10px;}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;}
.metric{border-left:2px solid rgba(24,184,178,.55);padding-left:20px;}
.metric-num{display:block;font-size:clamp(2.1rem,3.6vw,2.9rem);font-weight:700;line-height:1.1;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
.metric-num small{font-size:.42em;font-weight:600;color:var(--cyan);margin-left:6px;letter-spacing:0;}
.metric-label{display:block;margin-top:8px;font-size:14px;font-weight:600;color:var(--cyan);}
.metric p{margin-top:10px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.62);}

/* ---------- 板块通用 ---------- */
.section{padding:var(--section-y) 0;}
.section-alt{background:var(--surface);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{font-size:clamp(1.75rem,2.6vw,2.25rem);margin:14px 0 14px;}
.section-head p{font-size:16px;color:var(--muted);}
.section-head--row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;max-width:none;}
.section-head--row .section-head{max-width:640px;margin-bottom:0;}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--primary);transition:gap .2s ease,color .2s ease;}
.text-link:hover{color:var(--primary-dark);gap:10px;}
.text-link svg{width:15px;height:15px;}

/* ---------- 档案条 ---------- */
.archive-strip{padding-top:0;}
.strip-track{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.strip-item{padding:30px 26px;border-left:1px solid var(--border);transition:background .25s ease;}
.strip-item:first-child{border-left:0;}
.strip-item:hover{background:#FBFDFF;}
.strip-index{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;
  background:var(--primary-soft);color:var(--primary);font-size:13.5px;font-weight:700;font-variant-numeric:tabular-nums;
}
.strip-item h3{font-size:17px;margin:16px 0 10px;}
.strip-item p{font-size:14.5px;color:var(--muted);line-height:1.72;}
.strip-item .tag{margin-top:16px;}

/* ---------- 图文交错 ---------- */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.feature-row+.feature-row{margin-top:76px;}
.feature-row.is-reversed .feature-media{order:2;}
.feature-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-md);
  background:linear-gradient(135deg,#DCE9F5 0%,#EFF5FB 100%);
}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s ease;}
.feature-row:hover .feature-media img{transform:scale(1.03);}
.feature-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 84% 16%,rgba(24,184,178,.5) 0 2px,transparent 2.4px),
             radial-gradient(circle at 16% 86%,rgba(255,255,255,.6) 0 1.6px,transparent 2px);
}
.feature-body h3{font-size:clamp(1.3rem,1.9vw,1.6rem);margin:16px 0 16px;}
.feature-body p{font-size:15.5px;color:var(--muted);line-height:1.85;}
.feature-body p+p{margin-top:12px;}
.feature-list{margin-top:22px;display:flex;flex-direction:column;gap:11px;}
.feature-list li{position:relative;padding-left:22px;font-size:15px;color:var(--text);line-height:1.7;}
.feature-list li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;
  background:var(--primary);transform:rotate(45deg);opacity:.85;
}
.feature-body .text-link{margin-top:24px;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start;}
.faq-intro h2{font-size:clamp(1.75rem,2.6vw,2.25rem);margin:14px 0 16px;}
.faq-intro p{font-size:15.5px;color:var(--muted);line-height:1.85;}
.faq-intro .btn{margin-top:26px;}
.faq-list{border-top:1px solid var(--border);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-question{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;padding:16px 4px;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-question:hover{color:var(--primary);}
.faq-icon{position:relative;width:22px;height:22px;flex:none;border-radius:50%;background:var(--primary-soft);transition:background .2s ease;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{width:10px;height:2px;}
.faq-icon::after{width:2px;height:10px;}
.faq-item.is-open .faq-icon{background:var(--primary);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff;}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-answer{padding:0 40px 22px 4px;font-size:15px;color:var(--muted);line-height:1.85;border-left:0;}
.faq-item.is-open .faq-answer{border-left:2px solid var(--primary);padding-left:16px;}

/* ---------- 表单 / CTA ---------- */
.cta-section{padding:var(--section-y) 0;}
.cta-card{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;
  background:var(--surface);border:1px solid var(--border);border-radius:22px;
  box-shadow:var(--shadow-md);padding:56px;
}
.cta-copy h2{font-size:clamp(1.7rem,2.5vw,2.15rem);margin:14px 0 16px;}
.cta-copy p{font-size:15.5px;color:var(--muted);line-height:1.85;}
.cta-points{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.cta-points li{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:var(--text);}
.cta-points svg{width:19px;height:19px;color:var(--cyan);flex:none;margin-top:3px;}
.form-card{background:#FBFDFF;border:1px solid var(--border);border-radius:var(--radius-card);padding:28px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px;}
.field label .req{color:var(--error);margin-left:2px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;border-radius:var(--radius-input);
  border:1px solid var(--border);background:#fff;color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease;appearance:none;
}
.field textarea{height:auto;min-height:104px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field select{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236B7C91' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:40px;}
.field input::placeholder,.field textarea::placeholder{color:#9DAFBF;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,95,140,.16);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--error);box-shadow:0 0 0 3px rgba(217,83,79,.12);}
.field-error{display:none;margin-top:6px;font-size:12.5px;color:var(--error);}
.field.has-error .field-error{display:block;}
.checkbox-row{display:flex;align-items:flex-start;gap:10px;margin:6px 0 20px;font-size:13.5px;color:var(--muted);line-height:1.7;}
.checkbox-row input{width:17px;height:17px;height:17px;margin-top:3px;flex:none;accent-color:var(--primary);}
.checkbox-row a{color:var(--primary);text-decoration:underline;}
.form-success{
  display:none;margin-bottom:18px;padding:12px 16px;border-radius:10px;font-size:14px;
  background:rgba(46,158,107,.1);border:1px solid rgba(46,158,107,.35);color:var(--success);
}
.form-success.is-visible{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:#C8D4E2;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:2.2fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:52px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-mark{color:var(--cyan);}
.footer-brand .brand-name{color:#fff;font-size:18px;font-weight:700;display:block;}
.footer-brand .brand-sub{display:block;font-size:11px;letter-spacing:.18em;color:rgba(200,212,226,.5);margin-top:2px;}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(200,212,226,.72);max-width:32em;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(200,212,226,.75);transition:color .2s ease;}
.footer-col a:hover{color:var(--cyan);}
.footer-contact li{display:flex;align-items:flex-start;gap:9px;font-size:14px;color:rgba(200,212,226,.75);line-height:1.7;}
.footer-contact svg{width:16px;height:16px;flex:none;margin-top:4px;color:rgba(24,184,178,.85);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;align-items:center;
}
.footer-bottom p{font-size:13px;color:rgba(200,212,226,.55);}

/* ---------- 固定转化条 ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;background:#fff;
  border-top:1px solid var(--border);box-shadow:0 -8px 24px rgba(16,26,43,.08);
  transform:translateY(110%);transition:transform .32s ease;
}
.sticky-cta.is-visible{transform:translateY(0);}
.sticky-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.sticky-text{display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--text);min-width:0;}
.sticky-text svg{width:18px;height:18px;color:var(--primary);flex:none;}
.sticky-text span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.sticky-actions{display:flex;align-items:center;gap:12px;flex:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .nav-link{padding:8px 9px;font-size:14.5px;}
  .brand{padding:0 22px;}
  .hero-grid{gap:40px;}
}
@media (max-width:1024px){
  :root{--section-y:72px;}
  .nav-link{padding:8px 7px;font-size:14px;}
  .brand{padding:0 14px;}
  .brand-name{font-size:17px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-figure{max-width:560px;}
  .metrics-grid{grid-template-columns:repeat(2,1fr);gap:30px 26px;}
  .strip-track{grid-template-columns:repeat(2,1fr);}
  .strip-item:nth-child(3){border-left:0;}
  .strip-item{border-top:1px solid var(--border);}
  .strip-item:nth-child(1),.strip-item:nth-child(2){border-top:0;}
  .feature-row{gap:36px;}
  .faq-layout{grid-template-columns:1fr;gap:36px;}
  .cta-card{grid-template-columns:1fr;gap:36px;padding:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:768px){
  body{padding-bottom:58px;}
  .header-inner{height:64px;padding:0 20px;gap:12px;grid-template-columns:1fr auto 1fr;}
  .nav-left,.nav-right{display:none;}
  .brand{grid-column:2;padding:0;}
  .brand-name{font-size:16.5px;}
  .nav-toggle{display:inline-flex;grid-column:3;justify-self:end;}
  .container{padding:0 20px;}
  .hero{padding:34px 0 52px;}
  .hero-lead{font-size:16.5px;}
  .hero-actions .btn{flex:1 1 auto;}
  .hero-points{gap:10px 18px;}
  .metrics-band{padding:48px 0;}
  .metrics-grid{grid-template-columns:1fr;gap:26px;}
  .strip-track{grid-template-columns:1fr;}
  .strip-item{border-left:0;border-top:1px solid var(--border);padding:24px 20px;}
  .strip-item:first-child{border-top:0;}
  .feature-row{grid-template-columns:1fr;}
  .feature-row.is-reversed .feature-media{order:0;}
  .feature-row+.feature-row{margin-top:52px;}
  .cta-card{padding:28px;border-radius:18px;}
  .form-card{padding:20px;}
  .sticky-inner{height:64px;padding:0 20px;gap:12px;}
  .sticky-text{font-size:13.5px;}
  .sticky-text span{max-width:15em;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .sticky-cta{transform:translateY(0);}
}
@media (max-width:560px){
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .section-head h2{font-size:1.6rem;}
  .cta-points li{font-size:14.5px;}
  .sticky-actions .btn{padding:10px 16px;font-size:14px;}
  .sticky-text span{max-width:12em;}
  .sticky-cta{padding-bottom:env(safe-area-inset-bottom);}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important;}
}

/* roulang page: category3 */
:root{
  --brand:#2F5F8C;
  --brand-dark:#234A70;
  --brand-soft:#EAF2FA;
  --accent:#18B8B2;
  --pulse:#F08A5D;
  --pulse-dark:#D97046;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --border:#DCE6F2;
  --ink:#162234;
  --text:#2B3A4D;
  --muted:#6B7C91;
  --success:#2E9E6B;
  --error:#D9534F;
  --footer:#101A2B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:12px;
  --shadow-sm:0 2px 8px rgba(16,26,43,.06);
  --shadow-md:0 8px 24px rgba(16,26,43,.08);
  --shadow-lg:0 18px 40px rgba(16,26,43,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand-dark)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3;letter-spacing:0}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-tight{padding:64px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--accent);border-radius:2px}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:clamp(1.75rem,2.6vw,2.25rem);margin:14px 0 12px}
.section-head p{color:var(--muted);margin:0;font-size:16px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(47,95,140,.22)}
.btn-primary:hover{background:var(--brand-dark);color:#fff;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(47,95,140,.2)}
.btn-ghost{background:var(--surface);color:var(--brand);border-color:var(--border);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-dark);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-pulse{background:var(--pulse);color:#fff;box-shadow:0 8px 20px rgba(240,138,93,.3)}
.btn-pulse:hover{background:var(--pulse-dark);color:#fff;transform:translateY(-2px)}
.btn-pulse:active{transform:translateY(0)}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:3px solid rgba(47,95,140,.25);outline-offset:2px;border-radius:8px;
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-md)}
.header-inner{
  position:relative;
  display:flex;align-items:center;gap:16px;
  min-height:76px;padding:10px 0;
}
.nav-left,.nav-right{display:flex;align-items:center;gap:4px;flex:1 1 0}
.nav-left{justify-content:flex-end}
.nav-right{justify-content:flex-start}
.nav-link{
  position:relative;padding:9px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text);white-space:nowrap;
  transition:background .18s ease,color .18s ease;
}
.nav-link:hover{background:var(--brand-soft);color:var(--brand-dark)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.logo{
  display:flex;align-items:center;gap:10px;flex:0 0 auto;
  padding:0 22px;color:var(--ink);
}
.logo-mark{
  width:40px;height:40px;border-radius:13px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand-dark),#3f7fb5);
  color:#fff;display:grid;place-items:center;
  box-shadow:0 6px 14px rgba(47,95,140,.28);
}
.logo-mark svg{width:22px;height:22px}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-size:19px;font-weight:700;color:var(--ink);white-space:nowrap}
.logo-sub{font-size:10px;letter-spacing:.22em;color:var(--muted);font-weight:500}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  border:1px solid var(--border);background:var(--surface);color:var(--brand-dark);
  cursor:pointer;transition:background .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:var(--brand-soft);border-color:var(--brand)}
.nav-toggle svg{width:22px;height:22px}

/* 移动抽屉 */
.drawer{position:fixed;inset:0;z-index:120;display:none}
.drawer.is-open{display:block}
.drawer-backdrop{position:absolute;inset:0;background:rgba(16,26,43,.5);opacity:0;transition:opacity .25s ease}
.drawer.is-open .drawer-backdrop{opacity:1}
.drawer-panel{
  position:absolute;top:0;left:0;right:0;
  background:var(--surface);border-radius:0 0 22px 22px;
  padding:18px 20px 26px;box-shadow:var(--shadow-lg);
  transform:translateY(-14px);opacity:0;transition:transform .28s ease,opacity .28s ease;
}
.drawer.is-open .drawer-panel{transform:translateY(0);opacity:1}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}
.drawer-title{font-size:16px;font-weight:700;color:var(--ink)}
.drawer-close{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--border);
  background:var(--surface);color:var(--brand-dark);display:grid;place-items:center;cursor:pointer;
}
.drawer-close:hover{background:var(--brand-soft)}
.drawer-close svg{width:18px;height:18px}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.drawer-grid a{
  display:block;padding:12px 14px;border-radius:12px;
  background:var(--bg);border:1px solid var(--border);
  font-size:15px;color:var(--text);font-weight:500;
}
.drawer-grid a:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:#c9dcef}
.drawer-grid a.is-active{background:var(--brand);color:#fff;border-color:var(--brand)}
body.nav-locked{overflow:hidden}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:56px 0 64px;background:linear-gradient(180deg,#FBFDFF 0%,var(--bg) 100%)}
.hero::before{
  content:"";position:absolute;top:-80px;right:-80px;width:460px;height:460px;
  background-image:radial-gradient(rgba(47,95,140,.18) 1.2px,transparent 1.2px);
  background-size:24px 24px;pointer-events:none;opacity:.75;
  -webkit-mask-image:radial-gradient(circle at 65% 35%,#000 0%,transparent 72%);
  mask-image:radial-gradient(circle at 65% 35%,#000 0%,transparent 72%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:7fr 5fr;
  gap:48px;align-items:center;
}
.hero-copy h1{
  font-size:clamp(2.1rem,3.9vw,3.1rem);
  margin:16px 0 16px;
  letter-spacing:-.01em;
}
.hero-sub{font-size:clamp(1rem,1.35vw,1.19rem);color:var(--text);max-width:30em;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 22px;color:var(--muted);font-size:14px}
.hero-trust li{display:flex;align-items:center;gap:8px}
.hero-trust li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto}
.hero-visual{position:relative;margin:0}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:20px;box-shadow:var(--shadow-lg);
  background:linear-gradient(135deg,#E4EDF7,#F7FAFE);
}
.hero-visual::after{
  content:"";position:absolute;inset:12px;border:1px solid rgba(255,255,255,.55);
  border-radius:14px;pointer-events:none;
}
.hero-badge{
  position:absolute;left:-14px;bottom:-18px;
  background:var(--surface);border:1px solid var(--border);border-radius:14px;
  padding:12px 18px;box-shadow:var(--shadow-md);
  display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);
}
.hero-badge strong{display:block;font-size:15px;color:var(--ink);font-weight:700}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(24,184,178,.16)}

/* ---------- 信任条 ---------- */
.trust-strip{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--surface)}
.trust-strip ul{display:flex;flex-wrap:wrap;gap:14px 36px;padding:20px 0;font-size:14px;color:var(--muted)}
.trust-strip li{display:flex;align-items:center;gap:9px}
.trust-strip svg{width:18px;height:18px;color:var(--brand);flex:0 0 auto}

/* ---------- 攻略主体：目录 + 内容 ---------- */
.guide-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:44px;align-items:start}
.guide-toc{
  position:sticky;top:100px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-sm);
}
.guide-toc h2{font-size:14px;letter-spacing:.08em;color:var(--muted);font-weight:600;margin-bottom:12px;text-transform:uppercase}
.guide-toc ol{display:flex;flex-direction:column;gap:2px;counter-reset:toc}
.guide-toc a{
  display:flex;align-items:center;gap:10px;
  padding:9px 12px;border-radius:10px;font-size:14px;color:var(--muted);
  border-left:2px solid transparent;
}
.guide-toc a span.num{font-variant-numeric:tabular-nums;font-size:12px;color:var(--brand);font-weight:700;opacity:.65}
.guide-toc a:hover{background:var(--brand-soft);color:var(--brand-dark)}
.guide-toc a.is-current{background:var(--brand-soft);color:var(--brand-dark);font-weight:600;border-left-color:var(--brand)}
.guide-toc .toc-foot{margin-top:16px;padding-top:16px;border-top:1px dashed var(--border);font-size:13px;color:var(--muted)}
.guide-toc .toc-foot a{display:inline-flex;padding:0;border:0;color:var(--brand);font-weight:600;font-size:13px}
.guide-toc .toc-foot a:hover{background:transparent;color:var(--brand-dark);text-decoration:underline}

.content-block{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:30px 32px;box-shadow:var(--shadow-sm);margin-bottom:22px;
  transition:box-shadow .22s ease,border-color .22s ease;
  scroll-margin-top:110px;
}
.content-block:hover{box-shadow:var(--shadow-md);border-color:#cfdfee}
.content-block h2{font-size:clamp(1.35rem,2vw,1.6rem);margin-bottom:10px}
.content-block h3{font-size:1.19rem;margin:22px 0 8px}
.content-block p:last-child{margin-bottom:0}
.block-tag{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;
  margin-bottom:12px;letter-spacing:.02em;
}
.lead{font-size:17px;color:var(--text)}
.hint{font-size:14px;color:var(--muted)}

.point-list{display:flex;flex-direction:column;gap:12px;margin-top:16px}
.point-list li{
  display:grid;grid-template-columns:22px 1fr;gap:12px;
  padding:14px 16px;border-radius:12px;background:var(--bg);border:1px solid var(--border);
}
.point-list li svg{width:20px;height:20px;color:var(--accent);margin-top:3px}
.point-list strong{color:var(--ink);display:block;margin-bottom:2px;font-size:15px}
.point-list span{font-size:14.5px;color:var(--text)}

/* 步骤块 */
.step-list{display:flex;flex-direction:column;gap:0;margin-top:8px;counter-reset:step}
.step{
  position:relative;display:grid;grid-template-columns:52px 1fr;gap:18px;
  padding:22px 0;border-bottom:1px dashed var(--border);
}
.step:last-child{border-bottom:0;padding-bottom:4px}
.step-num{
  width:44px;height:44px;border-radius:14px;
  background:linear-gradient(150deg,var(--brand),#4682ae);color:#fff;
  display:grid;place-items:center;font-weight:700;font-size:16px;
  font-variant-numeric:tabular-nums;box-shadow:0 6px 14px rgba(47,95,140,.22);
}
.step h3{margin:0 0 6px;font-size:1.1rem}
.step p{margin:0;font-size:15px;color:var(--text)}
.step .meta{display:block;margin-top:8px;font-size:13px;color:var(--muted)}

/* 误区对照 */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:20px}
.compare-card{
  border-radius:14px;padding:20px 22px;border:1px solid var(--border);background:var(--bg);
}
.compare-card.is-good{background:#F1FAF8;border-color:#CDEDE9}
.compare-card h3{display:flex;align-items:center;gap:8px;margin:0 0 10px;font-size:1rem}
.compare-card h3 svg{width:18px;height:18px}
.compare-card.is-bad h3{color:var(--muted)}
.compare-card.is-good h3{color:#17847f}
.compare-card ul{display:flex;flex-direction:column;gap:8px;font-size:14.5px}
.compare-card li{padding-left:16px;position:relative}
.compare-card li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--muted);opacity:.45}
.compare-card.is-good li::before{background:var(--accent);opacity:1}

/* 图文区 */
.figure-split{display:grid;grid-template-columns:5fr 6fr;gap:32px;align-items:center;margin-top:8px}
.figure-split img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:14px;
  box-shadow:var(--shadow-md);background:linear-gradient(135deg,#E4EDF7,#F7FAFE);
}
.figure-split h3{margin-top:0}

/* 延伸栏目 */
.channel-links{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:24px}
.channel-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:16px 18px;border-radius:12px;background:var(--surface);
  border:1px solid var(--border);color:var(--ink);font-weight:600;font-size:15px;
  box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
}
.channel-link:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--brand);color:var(--brand-dark)}
.channel-link svg{width:18px;height:18px;color:var(--brand);flex:0 0 auto}
.channel-link small{display:block;font-weight:400;font-size:12.5px;color:var(--muted);margin-top:2px}

/* ---------- FAQ ---------- */
.faq-section{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.faq-wrap{display:grid;grid-template-columns:320px minmax(0,1fr);gap:48px;align-items:start}
.faq-intro h2{font-size:clamp(1.75rem,2.6vw,2.25rem);margin:14px 0 12px}
.faq-intro p{color:var(--muted);font-size:15.5px}
.faq-list{border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 4px;min-height:56px;
  background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);line-height:1.5;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-icon span{
  position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.faq-icon span:nth-child(1){width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-icon span:nth-child(2){width:2px;height:14px;transform:translate(-50%,-50%)}
.faq-q[aria-expanded="true"] .faq-icon span:nth-child(2){transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{padding:0 4px 20px;font-size:15px;color:var(--text);border-left:3px solid var(--brand-soft);padding-left:16px;margin-left:2px}
.faq-a p{margin:0}
.faq-a[hidden]{display:none}

/* ---------- CTA ---------- */
.cta-section{background:linear-gradient(140deg,#132036 0%,#101A2B 60%,#16253c 100%);color:#DCE7F4;position:relative;overflow:hidden}
.cta-section::before{
  content:"";position:absolute;right:-60px;top:-80px;width:420px;height:420px;
  background-image:radial-gradient(rgba(255,255,255,.16) 1.2px,transparent 1.2px);
  background-size:26px 26px;opacity:.5;pointer-events:none;
  -webkit-mask-image:radial-gradient(circle at 60% 40%,#000,transparent 70%);
  mask-image:radial-gradient(circle at 60% 40%,#000,transparent 70%);
}
.cta-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.cta-copy h2{color:#fff;font-size:clamp(1.75rem,2.6vw,2.25rem);margin:14px 0 14px}
.cta-copy p{color:#B9C9DC;font-size:15.5px;max-width:32em}
.eyebrow-light{color:#8FD9F5}
.eyebrow-light::before{background:var(--accent)}
.cta-points{display:flex;flex-direction:column;gap:10px;margin-top:22px}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:#C9D8E8}
.cta-points svg{width:18px;height:18px;color:var(--accent);flex:0 0 auto;margin-top:3px}

.cta-form{
  background:var(--surface);border-radius:20px;padding:28px;
  box-shadow:var(--shadow-lg);color:var(--text);
}
.cta-form h3{margin:0 0 6px;font-size:1.19rem;color:var(--ink)}
.cta-form .form-lead{font-size:13.5px;color:var(--muted);margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:6px}
.field input,.field select,.field textarea{
  width:100%;padding:0 14px;height:48px;
  border:1px solid var(--border);border-radius:var(--radius-input);
  background:var(--bg);color:var(--text);font-size:15px;font-family:inherit;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.field textarea{height:auto;padding:12px 14px;min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#9AA9BA}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#c6d8ea}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 4px rgba(47,95,140,.12);
}
.field.has-error input,.field.has-error textarea{border-color:var(--error);box-shadow:0 0 0 4px rgba(217,83,79,.1)}
.field-error{display:none;font-size:12px;color:var(--error);margin-top:6px}
.field.has-error .field-error{display:block}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.check{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--muted);margin:4px 0 16px;line-height:1.6}
.check input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);flex:0 0 auto}
.form-note{font-size:12.5px;color:var(--muted);margin:12px 0 0;text-align:center}
.form-alert{
  display:none;margin-bottom:14px;padding:11px 14px;border-radius:10px;
  font-size:13.5px;background:rgba(46,158,107,.1);border:1px solid rgba(46,158,107,.3);color:#1F7A52;
}
.form-alert.is-visible{display:block}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:#AEBBCB;padding:64px 0 0;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.brand-mark{
  width:40px;height:40px;border-radius:13px;display:grid;place-items:center;
  background:rgba(255,255,255,.08);color:var(--accent);flex:0 0 auto;
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{color:#fff;font-size:18px;font-weight:700}
.brand-sub{font-size:10px;letter-spacing:.2em;color:#7C8CA0}
.site-footer p{color:#93A3B6;line-height:1.8;margin:0;max-width:34em}
.footer-col h4{color:#fff;font-size:15px;margin:0 0 16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:#AEBBCB;font-size:14px}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:#93A3B6;line-height:1.7}
.footer-contact svg{width:17px;height:17px;flex:0 0 auto;margin-top:4px;color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:#7C8CA0;
}
.footer-bottom a{color:#93A3B6}
.footer-bottom a:hover{color:var(--accent)}

/* ---------- 固定转化条 ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:rgba(255,255,255,.98);backdrop-filter:blur(8px);
  border-top:1px solid var(--border);box-shadow:0 -8px 24px rgba(16,26,43,.08);
  transform:translateY(112%);transition:transform .3s ease;
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-cta.is-visible{transform:translateY(0)}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px;padding:10px 0}
.sticky-inner p{
  margin:0;font-size:14.5px;color:var(--text);font-weight:500;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.sticky-inner .btn{padding:10px 20px;font-size:14px;flex:0 0 auto}

/* ---------- 图片占位 ---------- */
.img-box{position:relative;overflow:hidden;background:linear-gradient(135deg,#E4EDF7,#F6FAFE)}
.img-box::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(47,95,140,.16) 1px,transparent 1px);
  background-size:20px 20px;opacity:.35;
}
.img-box img{position:relative;z-index:1}
.img-box.is-fallback img{opacity:0}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .nav-link{padding:9px 10px;font-size:14.5px}
  .logo{padding:0 12px}
  .guide-layout{grid-template-columns:250px minmax(0,1fr);gap:32px}
}
@media (max-width:1024px){
  .nav-left,.nav-right{display:none}
  .header-inner{min-height:64px;justify-content:center}
  .logo{padding:0;justify-content:center}
  .logo-name{font-size:18px}
  .nav-toggle{display:inline-flex;position:absolute;right:0;top:50%;transform:translateY(-50%)}
  .hero{padding:40px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{order:2}
  .hero-badge{left:12px;bottom:-14px}
  .section{padding:72px 0}
  .guide-layout{grid-template-columns:1fr;gap:24px}
  .guide-toc{position:static;padding:16px}
  .guide-toc ol{flex-direction:row;flex-wrap:wrap;gap:6px}
  .guide-toc a{font-size:13px;padding:7px 10px;border-left:0;background:var(--bg);border:1px solid var(--border)}
  .guide-toc a.is-current{background:var(--brand-soft);border-color:#c9dcef}
  .guide-toc ol{display:grid;grid-template-columns:1fr 1fr}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .faq-intro p{max-width:40em}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .figure-split{grid-template-columns:1fr;gap:22px}
  .channel-links{grid-template-columns:1fr}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .content-block{padding:24px 20px}
  .compare{grid-template-columns:1fr}
  .cta-form{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .sticky-cta{transform:translateY(0)}
  .sticky-inner{min-height:58px;gap:12px}
  .sticky-inner p{font-size:13.5px}
  .sticky-inner .btn{padding:9px 16px;font-size:13.5px}
  body{padding-bottom:80px}
  .step{grid-template-columns:40px 1fr;gap:14px}
  .step-num{width:38px;height:38px;border-radius:12px;font-size:15px}
  .field-row{grid-template-columns:1fr}
  .hero-trust{gap:8px 16px}
  .trust-strip ul{gap:10px 20px;padding:16px 0;font-size:13.5px}
}
@media (max-width:560px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-copy h1{font-size:1.85rem}
  .logo-name{font-size:16px}
  .logo-sub{display:none}
  .logo-mark{width:34px;height:34px;border-radius:11px}
  .logo-mark svg{width:19px;height:19px}
  .drawer-grid{grid-template-columns:1fr}
  .content-block{padding:20px 16px}
  .point-list li{grid-template-columns:18px 1fr;padding:12px}
  .faq-q{font-size:15px;padding:16px 2px}
  .channel-link{padding:14px}
  .footer-bottom{font-size:12px}
  .sticky-inner p{max-width:52vw}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category4 */
:root{
  --brand:#2F5F8C;
  --brand-deep:#234A70;
  --cyan:#18B8B2;
  --orange:#F08A5D;
  --orange-deep:#D97046;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --surface-soft:#EAF2FA;
  --line:#DCE6F2;
  --ink:#162234;
  --text:#2B3A4D;
  --muted:#6B7C91;
  --ok:#2E9E6B;
  --err:#D9534F;
  --footer:#101A2B;
  --r-card:16px;
  --r-btn:10px;
  --r-input:12px;
  --sh-sm:0 2px 8px rgba(16,26,43,.06);
  --sh-md:0 8px 24px rgba(16,26,43,.08);
  --sh-lg:0 18px 40px rgba(16,26,43,.12);
  --container:1200px;
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.28;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--brand-deep);}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,select,textarea{font-family:inherit;font-size:16px;color:var(--text);}
:focus-visible{outline:3px solid rgba(47,95,140,.35);outline-offset:2px;border-radius:6px;}
.container{width:min(100% - 40px,var(--container));margin-inline:auto;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-sm);}
.nav-grid{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:76px;
}
.nav-left{display:flex;justify-content:flex-end;gap:4px;}
.nav-right{display:flex;justify-content:flex-start;gap:4px;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:9px 12px;
  font-size:15px;font-weight:500;color:var(--text);
  border-radius:8px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:center;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--brand);background:var(--surface-soft);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--brand);font-weight:700;}
.nav-link.is-active::after{transform:scaleX(1);}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 16px;justify-self:center;border-radius:12px;
  color:var(--ink);
}
.brand:hover{color:var(--brand-deep);background:var(--surface-soft);}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;display:grid;place-items:center;
  border-radius:10px;color:#fff;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-deep) 60%,#1b3a58 100%);
  box-shadow:var(--sh-sm);
}
.brand-mark svg{width:20px;height:20px;}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.02em;}
.nav-toggle{
  display:none;grid-column:3;grid-row:1;justify-self:end;
  width:42px;height:42px;border-radius:10px;
  align-items:center;justify-content:center;
  border:1px solid var(--line);background:var(--surface);color:var(--ink);
}
.nav-toggle:hover{background:var(--surface-soft);}
.nav-toggle svg{width:22px;height:22px;}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,26,43,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:90;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-lg);
  transform:translateY(-104%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
  max-height:92vh;overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 20px;border-bottom:1px solid var(--line);
}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  display:grid;place-items:center;background:var(--surface);
}
.drawer-close svg{width:20px;height:20px;}
.drawer-nav{padding:12px 20px 24px;display:grid;gap:6px;}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 14px;border-radius:12px;font-size:16px;color:var(--text);
  border:1px solid transparent;
}
.drawer-nav a:hover{background:var(--surface-soft);color:var(--brand-deep);}
.drawer-nav a.is-active{background:var(--surface-soft);color:var(--brand);font-weight:700;border-color:var(--line);}
.drawer-nav a svg{width:18px;height:18px;color:var(--muted);}
body.lock{overflow:hidden;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;
  transition:transform .18s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:var(--surface);color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--surface-soft);color:var(--brand-deep);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-accent{background:var(--orange);color:#fff;box-shadow:var(--sh-sm);}
.btn-accent:hover{background:var(--orange-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-md);}
.btn-accent:active{transform:translateY(0);}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- section base ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--brand);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:22px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--cyan));
}
.section-head h2{font-size:clamp(1.75rem,2.6vw,2.25rem);margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16.5px;max-width:700px;}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--brand);}
.link-more svg{width:16px;height:16px;transition:transform .2s ease;}
.link-more:hover svg{transform:translateX(3px);}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:72px 0 80px;
  background:
    radial-gradient(circle at 88% 12%,rgba(24,184,178,.10),transparent 46%),
    radial-gradient(circle at 6% 88%,rgba(47,95,140,.10),transparent 48%),
    linear-gradient(180deg,#FBFDFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.hero::after{
  content:"";position:absolute;right:-60px;top:-40px;width:380px;height:380px;
  background-image:radial-gradient(rgba(47,95,140,.28) 1px,transparent 1px);
  background-size:18px 18px;opacity:.45;pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:7fr 5fr;gap:52px;align-items:center;
}
.hero h1{font-size:clamp(2.2rem,3.9vw,3.1rem);margin-bottom:18px;letter-spacing:-.01em;}
.hero h1 .hl{color:var(--brand);}
.hero-sub{font-size:18px;color:var(--text);max-width:560px;margin-bottom:26px;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 26px;}
.hero-trust li{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;color:var(--muted);
}
.hero-trust svg{width:18px;height:18px;color:var(--cyan);flex:0 0 18px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:20px;box-shadow:var(--sh-lg);
  border:1px solid rgba(255,255,255,.7);
}
.hero-visual::before{
  content:"";position:absolute;inset:auto -14px -14px auto;width:180px;height:180px;
  border:1px solid rgba(47,95,140,.18);border-radius:50%;pointer-events:none;
}
.hero-badge{
  position:absolute;left:-18px;bottom:22px;
  display:flex;align-items:center;gap:10px;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  padding:12px 16px;box-shadow:var(--sh-md);
}
.hero-badge .dot{
  width:9px;height:9px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 0 4px rgba(24,184,178,.18);
}
.hero-badge strong{display:block;font-size:14px;color:var(--ink);line-height:1.3;}
.hero-badge span{font-size:12.5px;color:var(--muted);}

/* ---------- pills ---------- */
.pill-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.pill{
  padding:9px 18px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);
  font-size:14.5px;font-weight:600;color:var(--muted);
  transition:all .2s ease;
}
.pill:hover{color:var(--brand);border-color:rgba(47,95,140,.45);background:var(--surface-soft);}
.pill.is-active{
  background:var(--brand);border-color:var(--brand);color:#fff;
  box-shadow:0 6px 18px rgba(47,95,140,.22);
}

/* ---------- stream cards 2x2 ---------- */
.stream-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
.stream-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-sm);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
  display:flex;flex-direction:column;
}
.stream-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:#C7D8EC;}
.stream-card.is-hidden{display:none;}
.stream-media{position:relative;overflow:hidden;background:linear-gradient(135deg,#DCE9F6,#EEF5FC);}
.stream-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.stream-card:hover .stream-media img{transform:scale(1.04);}
.stream-media .tag{
  position:absolute;left:14px;top:14px;
  padding:5px 12px;border-radius:999px;
  background:rgba(255,255,255,.94);color:var(--brand);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;
  box-shadow:var(--sh-sm);
}
.stream-media .duration{
  position:absolute;right:14px;bottom:14px;
  padding:4px 10px;border-radius:8px;
  background:rgba(16,26,43,.72);color:#fff;font-size:12.5px;font-weight:600;
}
.stream-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.stream-body h3{font-size:1.2rem;}
.stream-body p{font-size:14.8px;color:var(--muted);line-height:1.78;}
.stream-meta{
  display:flex;flex-wrap:wrap;gap:8px;
  margin-top:auto;padding-top:14px;border-top:1px dashed var(--line);
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  background:var(--surface-soft);color:var(--brand);
  font-size:12.5px;font-weight:600;
}
.chip-line{background:transparent;color:var(--muted);border:1px solid var(--line);}
.stream-link{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:14px;font-size:14.5px;font-weight:600;color:var(--brand);
}
.stream-link svg{width:16px;height:16px;transition:transform .2s ease;}
.stream-link:hover svg{transform:translateX(3px);}

/* ---------- slot table ---------- */
.slot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.slot-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px 26px;box-shadow:var(--sh-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.slot-card:hover{transform:translateY(-3px);box-shadow:var(--sh-md);border-color:#C7D8EC;}
.slot-time{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--cyan);letter-spacing:.04em;margin-bottom:12px;
}
.slot-time svg{width:18px;height:18px;}
.slot-card h3{font-size:1.16rem;margin-bottom:10px;}
.slot-card p{font-size:14.8px;color:var(--muted);line-height:1.8;margin-bottom:16px;}
.slot-list{display:grid;gap:9px;}
.slot-list li{
  position:relative;padding-left:18px;font-size:14.4px;color:var(--text);
}
.slot-list li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--brand);opacity:.55;
}

/* ---------- flow steps ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.flow-item{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:30px 26px 26px;box-shadow:var(--sh-sm);
}
.flow-item .step-no{
  display:inline-grid;place-items:center;
  width:40px;height:40px;border-radius:12px;margin-bottom:16px;
  background:var(--surface-soft);color:var(--brand);
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
}
.flow-item h3{font-size:1.12rem;margin-bottom:8px;}
.flow-item p{font-size:14.8px;color:var(--muted);line-height:1.8;}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-aside h2{font-size:clamp(1.7rem,2.4vw,2.1rem);margin-bottom:14px;}
.faq-aside p{color:var(--muted);font-size:15.5px;margin-bottom:22px;}
.faq-aside .btn{font-size:14.5px;padding:11px 20px;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 4px;min-height:56px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-q .icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;border:1px solid var(--line);color:var(--brand);
  transition:transform .25s ease,background-color .25s ease,border-color .25s ease;
}
.faq-q .icon svg{width:14px;height:14px;}
.faq-item.is-open .faq-q{color:var(--brand-deep);}
.faq-item.is-open .faq-q .icon{transform:rotate(45deg);background:var(--surface-soft);border-color:rgba(47,95,140,.4);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{
  padding:0 4px 20px;font-size:15.2px;color:var(--muted);line-height:1.85;
  border-left:3px solid rgba(47,95,140,.25);padding-left:16px;margin-bottom:18px;
}

/* ---------- cta form ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#22456A 0%,#2F5F8C 58%,#35709E 100%);
  color:#fff;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.22) 1px,transparent 1px);
  background-size:26px 26px;opacity:.35;pointer-events:none;
}
.cta-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:start;
  padding:80px 0;
}
.cta-band h2{color:#fff;font-size:clamp(1.8rem,2.7vw,2.3rem);margin-bottom:16px;}
.cta-band .eyebrow{color:#9FD8F5;}
.cta-band .eyebrow::before{background:linear-gradient(90deg,#9FD8F5,var(--cyan));}
.cta-band p.lead{color:rgba(255,255,255,.84);font-size:16px;margin-bottom:24px;max-width:460px;}
.cta-points{display:grid;gap:12px;}
.cta-points li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:15px;color:rgba(255,255,255,.92);
}
.cta-points svg{width:20px;height:20px;flex:0 0 20px;color:#8FE3DE;margin-top:2px;}
.form-card{
  background:var(--surface);border-radius:18px;padding:30px 28px 28px;
  box-shadow:var(--sh-lg);color:var(--text);
}
.form-card h3{font-size:1.15rem;margin-bottom:6px;}
.form-card .form-note{font-size:13.5px;color:var(--muted);margin-bottom:20px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:7px;}
.field label .req{color:var(--err);margin-left:3px;}
.field input,.field select,.field textarea{
  width:100%;padding:0 14px;height:48px;
  border:1px solid var(--line);border-radius:var(--r-input);
  background:#FCFDFF;color:var(--text);
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.field textarea{height:auto;min-height:96px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#9AAABB;}
.field input:hover,.field select:hover,.field textarea:hover{border-color:#C3D5E8;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 4px rgba(47,95,140,.14);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--err);}
.field .err-msg{display:none;font-size:12.5px;color:var(--err);margin-top:6px;}
.field.has-error .err-msg{display:block;}
.check-row{display:flex;align-items:flex-start;gap:9px;margin:4px 0 18px;}
.check-row input{width:17px;height:17px;margin-top:3px;flex:0 0 17px;accent-color:var(--brand);}
.check-row label{font-size:13.5px;color:var(--muted);line-height:1.65;margin:0;font-weight:400;}
.form-card .btn{width:100%;}
.form-success{
  display:none;align-items:flex-start;gap:10px;
  margin-top:14px;padding:12px 14px;border-radius:10px;
  background:#EAF7F1;color:#1F7A52;font-size:13.8px;line-height:1.6;
}
.form-success.is-shown{display:flex;}
.form-success svg{width:18px;height:18px;flex:0 0 18px;margin-top:2px;}

/* ---------- footer ---------- */
.site-footer{background:var(--footer);color:rgba(255,255,255,.72);padding:64px 0 26px;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{box-shadow:none;background:linear-gradient(135deg,#2F5F8C,#18B8B2);}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:18px;font-weight:700;color:#fff;}
.brand-sub{font-size:11.5px;letter-spacing:.16em;color:rgba(255,255,255,.5);}
.site-footer p{font-size:14.2px;line-height:1.85;color:rgba(255,255,255,.62);max-width:330px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-col ul{display:grid;gap:11px;}
.footer-col a{font-size:14.2px;color:rgba(255,255,255,.68);}
.footer-col a:hover{color:var(--cyan);}
.footer-contact li{
  display:flex;align-items:flex-start;gap:9px;
  font-size:14.2px;color:rgba(255,255,255,.68);line-height:1.7;
}
.footer-contact svg{width:17px;height:17px;flex:0 0 17px;margin-top:3px;color:var(--cyan);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding-top:22px;font-size:13.2px;color:rgba(255,255,255,.5);
}

/* ---------- fixed cta ---------- */
.fixed-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:rgba(255,255,255,.98);
  border-top:1px solid var(--line);
  box-shadow:0 -8px 24px rgba(16,26,43,.10);
  transform:translateY(110%);
  transition:transform .3s ease;
}
.fixed-cta.is-visible{transform:translateY(0);}
.fixed-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:10px 0;
}
.fixed-text{font-size:14.5px;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.fixed-text strong{color:var(--brand-deep);font-weight:700;}
.fixed-cta .btn{padding:11px 22px;font-size:14.5px;}

/* ---------- breadcrumb ---------- */
.crumb{padding:18px 0 0;font-size:13.5px;color:var(--muted);}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li:not(:last-child)::after{content:"/";color:#B9C8D8;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--brand);}
.crumb .current{color:var(--text);}

/* ---------- responsive ---------- */
@media (max-width:1280px){
  .nav-link{padding:9px 9px;font-size:14.5px;}
  .brand-name{font-size:18px;}
}
@media (max-width:1024px){
  .container{width:92%;}
  .nav-grid{gap:14px;height:70px;}
  .nav-left,.nav-right{gap:0;}
  .nav-link{padding:8px 8px;font-size:14px;}
  .brand-name{font-size:17px;}
  .brand-mark{width:30px;height:30px;flex:0 0 30px;}
  .section{padding:72px 0;}
  .hero{padding:56px 0 64px;}
  .hero-grid{gap:36px;}
  .cta-grid{padding:64px 0;gap:36px;}
  .faq-wrap{grid-template-columns:1fr;gap:32px;}
  .slot-grid,.flow-grid{grid-template-columns:repeat(3,1fr);gap:18px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .nav-left,.nav-right{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-grid{grid-template-columns:1fr auto 1fr;height:64px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-visual{order:2;}
  .hero-badge{left:12px;bottom:12px;}
  .stream-grid{grid-template-columns:1fr;}
  .slot-grid,.flow-grid{grid-template-columns:1fr;}
  .cta-grid{grid-template-columns:1fr;}
  .section{padding:56px 0;}
  .site-footer{padding:48px 0 22px;}
}
@media (max-width:768px){
  body{padding-bottom:72px;}
  .section{padding:52px 0;}
  .hero{padding:40px 0 48px;}
  .hero h1{font-size:clamp(1.85rem,7vw,2.4rem);}
  .hero-sub{font-size:16.5px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .hero-trust{gap:8px 18px;}
  .section-head{margin-bottom:28px;}
  .pill-bar{gap:8px;}
  .pill{padding:8px 15px;font-size:14px;}
  .fixed-inner{min-height:58px;padding:8px 0 calc(8px + env(safe-area-inset-bottom));}
  .fixed-text{font-size:13.2px;}
  .fixed-cta .btn{padding:10px 16px;font-size:13.8px;}
  .form-card{padding:24px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:560px){
  .container{width:calc(100% - 40px);}
  .stream-body{padding:18px 18px 20px;}
  .slot-card,.flow-item{padding:22px 20px;}
  .hero-badge{padding:10px 12px;}
  .hero-badge strong{font-size:13px;}
  .faq-q{font-size:15.4px;padding:18px 2px;}
  .faq-a p{font-size:14.6px;}
  .stream-media .duration{right:10px;bottom:10px;font-size:11.5px;}
  .stream-media .tag{left:10px;top:10px;font-size:11.5px;padding:4px 10px;}
}

/* roulang page: category5 */
:root{
  --brand:#2F5F8C;
  --brand-deep:#234A70;
  --cyan:#18B8B2;
  --accent:#F08A5D;
  --accent-deep:#D97046;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --soft:#EAF2FA;
  --line:#DCE6F2;
  --ink:#162234;
  --text:#2B3A4D;
  --muted:#6B7C91;
  --ok:#2E9E6B;
  --err:#D9534F;
  --footer:#101A2B;
  --radius:16px;
  --radius-sm:10px;
  --radius-xs:12px;
  --shadow-sm:0 2px 8px rgba(16,26,43,.06);
  --shadow-md:0 8px 24px rgba(16,26,43,.08);
  --shadow-lg:0 18px 40px rgba(16,26,43,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding-bottom:88px;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease}
img{display:block;max-width:100%;object-fit:cover;border-radius:var(--radius)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
svg{display:block}
:focus-visible{outline:3px solid rgba(47,95,140,.25);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:92px 0}
.section--tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.08em;color:var(--brand);
  font-weight:600;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand);border-radius:2px}
h2{font-size:clamp(1.75rem,2.6vw,2.25rem);font-weight:700;color:var(--ink);line-height:1.35;letter-spacing:-.01em}
h3{font-size:1.3125rem;font-weight:600;color:var(--ink);line-height:1.45}
.section-desc{margin-top:14px;color:var(--muted);font-size:16.5px;line-height:1.8}
.tnum{font-variant-numeric:tabular-nums}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm)}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:76px;
  gap:16px;
}
.nav-left{display:flex;justify-content:flex-end;align-items:center;gap:4px}
.nav-right{display:flex;justify-content:flex-start;align-items:center;gap:4px}
.nav-right-group{display:flex;justify-content:flex-end;align-items:center;gap:8px;justify-self:end}
.nav-link{
  position:relative;
  padding:9px 13px;
  font-size:15px;
  color:var(--text);
  border-radius:8px;
  white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--soft);color:var(--brand-deep)}
.nav-link:active{background:#DFEBF7}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;
  height:2px;border-radius:2px;background:var(--brand);
}
.brand{
  display:flex;align-items:center;gap:12px;
  padding:0 40px;
  white-space:nowrap;
}
.brand-mark{
  width:38px;height:38px;flex:none;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(140deg,#EAF2FA,#FFFFFF);
  border:1px solid var(--line);
  color:var(--brand);
  box-shadow:var(--shadow-sm);
}
.brand-mark svg{width:20px;height:20px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.01em}
.brand-sub{font-size:10.5px;letter-spacing:.22em;color:var(--muted);font-weight:500}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  place-items:center;
  color:var(--brand-deep);
  transition:background .2s ease,box-shadow .2s ease;
}
.nav-toggle:hover{background:var(--soft)}
.nav-toggle svg{width:22px;height:22px}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,26,43,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s;
  z-index:95;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:min(320px,86vw);
  background:#fff;
  z-index:100;
  transform:translateX(104%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;
  box-shadow:var(--shadow-lg);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;border-bottom:1px solid var(--line);
}
.drawer-title{font-weight:700;color:var(--ink);font-size:16px}
.drawer-close{
  width:38px;height:38px;border-radius:10px;
  display:grid;place-items:center;
  background:var(--soft);color:var(--brand-deep);
  font-size:20px;line-height:1;
}
.drawer-close:hover{background:#DFEBF7}
.drawer-body{padding:16px 12px;overflow-y:auto;display:flex;flex-direction:column;gap:2px}
.drawer-link{
  padding:13px 14px;border-radius:10px;font-size:15.5px;color:var(--text);
}
.drawer-link:hover{background:var(--soft);color:var(--brand-deep)}
.drawer-link.is-active{background:var(--soft);color:var(--brand);font-weight:600}
body.drawer-open{overflow:hidden}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:72px 0 76px;
  background:
    radial-gradient(circle at 88% 12%,rgba(47,95,140,.08),transparent 52%),
    linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;top:8%;right:4%;width:220px;height:220px;
  background-image:radial-gradient(rgba(47,95,140,.28) 1.1px,transparent 1.1px);
  background-size:16px 16px;opacity:.35;pointer-events:none;
}
.hero-grid{
  display:grid;grid-template-columns:1.05fr .95fr;
  gap:56px;align-items:center;position:relative;z-index:1;
}
.hero h1{
  font-size:clamp(2.1rem,3.6vw,3.05rem);
  line-height:1.28;font-weight:700;color:var(--ink);
  letter-spacing:-.015em;margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{font-size:17.5px;line-height:1.85;color:var(--text);max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:30px}
.hero-point{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.hero-point svg{width:17px;height:17px;color:var(--cyan);flex:none}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/3;border-radius:var(--radius);
  box-shadow:var(--shadow-lg);border:1px solid var(--line);
  background:linear-gradient(140deg,#DCE9F6,#EAF2FA);
}
.hero-figure .fig-tag{
  position:absolute;left:18px;bottom:18px;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 15px;border-radius:999px;
  background:rgba(255,255,255,.94);
  box-shadow:var(--shadow-sm);
  font-size:13px;color:var(--brand-deep);font-weight:600;
}
.hero-figure .fig-tag i{
  width:7px;height:7px;border-radius:50%;background:var(--cyan);display:block;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:50px;padding:0 26px;border-radius:var(--radius-sm);
  font-size:15.5px;font-weight:600;
  transition:background .2s ease,border-color .2s ease,transform .15s ease,box-shadow .2s ease,color .2s ease;
  border:1px solid transparent;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C6D8EC}
.btn-ghost:hover{background:var(--soft);border-color:var(--brand);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(240,138,93,.28)}
.btn-accent:hover{background:var(--accent-deep);transform:translateY(-2px)}
.btn-accent:active{transform:translateY(0)}
.btn-block{width:100%}
.btn[disabled],.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ 信息条 ============ */
.strip{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-sm);
  display:grid;grid-template-columns:repeat(5,1fr);
  overflow:hidden;
}
.strip-item{padding:24px 22px;border-right:1px solid var(--line)}
.strip-item:last-child{border-right:0}
.strip-num{
  font-size:1.5rem;font-weight:700;color:var(--brand-deep);
  line-height:1.2;font-variant-numeric:tabular-nums;
}
.strip-label{margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.6}

/* ============ 交错图文 ============ */
.split{
  display:grid;grid-template-columns:1fr 1fr;
  gap:60px;align-items:center;
}
.split + .split{margin-top:80px}
.split-media{position:relative}
.split-media img{
  width:100%;aspect-ratio:16/11;border-radius:var(--radius);
  box-shadow:var(--shadow-md);border:1px solid var(--line);
  background:linear-gradient(140deg,#DCE9F6,#EAF2FA);
}
.split-media::before{
  content:"";position:absolute;inset:auto -14px -14px auto;
  width:120px;height:120px;border-radius:18px;
  background-image:radial-gradient(rgba(24,184,178,.4) 1.2px,transparent 1.2px);
  background-size:14px 14px;opacity:.5;z-index:-1;
}
.split-body .pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.pill{
  display:inline-flex;align-items:center;
  padding:5px 14px;border-radius:999px;
  background:var(--soft);color:var(--brand-deep);
  font-size:13px;font-weight:600;white-space:nowrap;
}
.pill--cyan{background:rgba(24,184,178,.12);color:#12807C}
.split-body h2{margin-bottom:16px}
.split-body p{color:var(--text);font-size:16px;line-height:1.85}
.check-list{margin-top:22px;display:grid;gap:12px}
.check-list li{
  position:relative;padding-left:26px;
  font-size:15px;color:var(--text);line-height:1.7;
}
.check-list li::before{
  content:"";position:absolute;left:4px;top:.62em;
  width:8px;height:8px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 0 4px rgba(24,184,178,.14);
}
.split.is-reverse .split-media{order:2}

/* ============ 对比表 ============ */
.table-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-sm);
  overflow:hidden;
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.compare-table{width:100%;min-width:760px;border-collapse:collapse;font-size:15px}
.compare-table caption{
  caption-side:top;text-align:left;padding:20px 22px 0;
  font-size:13.5px;color:var(--muted);
}
.compare-table thead th{
  background:var(--soft);color:var(--brand-deep);
  font-weight:600;text-align:left;
  padding:15px 20px;white-space:nowrap;
  border-bottom:1px solid var(--line);
  font-size:14px;
}
.compare-table tbody td{
  padding:16px 20px;border-bottom:1px solid var(--line);
  color:var(--text);vertical-align:top;line-height:1.7;
}
.compare-table tbody tr:last-child td{border-bottom:0}
.compare-table tbody tr{transition:background .2s ease}
.compare-table tbody tr:hover{background:#FAFCFF}
.compare-table .cell-type{font-weight:600;color:var(--ink);white-space:nowrap}
.table-note{
  display:flex;gap:10px;align-items:flex-start;
  padding:16px 22px;background:#FBFDFF;
  border-top:1px solid var(--line);
  font-size:13.5px;color:var(--muted);line-height:1.7;
}
.table-note svg{width:16px;height:16px;color:var(--brand);flex:none;margin-top:3px}

/* ============ 场景定位 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:34px}
.scene-item{border-left:3px solid var(--soft);padding-left:22px;transition:border-color .2s ease}
.scene-item:hover{border-color:var(--brand)}
.scene-index{
  font-size:13px;font-weight:700;color:var(--cyan);
  letter-spacing:.12em;font-variant-numeric:tabular-nums;
}
.scene-item h3{margin:10px 0 10px;font-size:1.0625rem}
.scene-item p{font-size:14.8px;color:var(--muted);line-height:1.8}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:64px;align-items:start}
.faq-aside{position:sticky;top:104px}
.faq-aside .btn{margin-top:26px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:56px;padding:16px 2px;
  text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);
  background:none;transition:color .2s ease;
}
.faq-btn:hover{color:var(--brand)}
.faq-icon{
  width:26px;height:26px;flex:none;position:relative;
  border-radius:8px;background:var(--soft);
  transition:transform .25s ease,background .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-deep);border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{width:12px;height:2px;left:7px;top:12px}
.faq-icon::after{width:2px;height:12px;left:12px;top:7px}
.faq-item.is-open .faq-icon{background:var(--brand)}
.faq-item.is-open .faq-icon::before,
.faq-item.is-open .faq-icon::after{background:#fff}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-panel{max-height:0;overflow:hidden;transition:max-height .32s ease}
.faq-panel-inner{
  padding:0 2px 20px;font-size:15px;line-height:1.85;color:var(--text);
  border-left:2px solid var(--soft);padding-left:16px;margin-left:2px;
}
.faq-item.is-open .faq-panel{max-height:420px}

/* ============ CTA 表单 ============ */
.cta-section{
  background:
    radial-gradient(circle at 12% 20%,rgba(47,95,140,.10),transparent 48%),
    linear-gradient(180deg,#F2F7FC,#EAF2FA);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta-copy h2{margin-bottom:16px}
.cta-copy p{color:var(--text);font-size:16px;line-height:1.85}
.cta-list{margin-top:26px;display:grid;gap:14px}
.cta-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text)}
.cta-list svg{width:19px;height:19px;color:var(--cyan);flex:none;margin-top:3px}
.form-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-md);
  padding:30px;
}
.form-card h3{font-size:1.125rem;margin-bottom:6px}
.form-card .form-hint{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-field{margin-bottom:16px}
.form-field label{
  display:block;font-size:13.5px;font-weight:600;color:var(--ink);
  margin-bottom:8px;
}
.form-field input,
.form-field select,
.form-field textarea{
  width:100%;
  border:1px solid var(--line);
  border-radius:var(--radius-xs);
  background:#fff;
  padding:0 14px;
  height:48px;
  font-size:15px;
  color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.form-field textarea{height:auto;min-height:106px;padding:12px 14px;resize:vertical;line-height:1.7}
.form-field input::placeholder,
.form-field textarea::placeholder{color:#9AAABA}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus{
  outline:none;border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(47,95,140,.12);
}
.form-field input.is-invalid,
.form-field select.is-invalid,
.form-field textarea.is-invalid{border-color:var(--err);box-shadow:0 0 0 4px rgba(217,83,79,.12)}
.field-error{display:none;font-size:12px;color:var(--err);margin-top:6px}
.form-field.has-error .field-error{display:block}
.checkbox-line{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:18px}
.checkbox-line input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);flex:none}
.form-success{
  display:none;margin-bottom:18px;padding:12px 16px;
  border-radius:var(--radius-xs);
  background:rgba(46,158,107,.10);
  border:1px solid rgba(46,158,107,.28);
  color:#1F7A52;font-size:13.5px;line-height:1.7;
}
.form-success.is-show{display:block}
.form-foot{font-size:12.5px;color:var(--muted);margin-top:14px;text-align:center}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer);color:#C4D2E3;padding:72px 0 0;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.5fr;gap:44px;padding-bottom:52px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-mark{
  background:rgba(255,255,255,.06);
  border-color:rgba(255,255,255,.14);
  color:#8FD8D4;box-shadow:none;
}
.footer-brand .brand-name{color:#fff;font-size:18px;font-weight:700}
.footer-brand .brand-sub{color:#7E93AC;font-size:10.5px;letter-spacing:.22em}
.site-footer p{color:#9FB2C7;line-height:1.85;max-width:38ch;font-size:14px}
.footer-col h4{
  color:#fff;font-size:14.5px;font-weight:600;margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col ul{display:grid;gap:12px}
.footer-col a{color:#A9BCD1;font-size:14px}
.footer-col a:hover{color:var(--cyan)}
.footer-contact li{
  display:flex;gap:10px;align-items:flex-start;
  color:#A9BCD1;font-size:13.5px;line-height:1.75;
}
.footer-contact svg{width:16px;height:16px;flex:none;margin-top:4px;color:#6F8BA8}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7E93AC;
}
.footer-bottom a{color:#9FB2C7}
.footer-bottom a:hover{color:var(--cyan)}

/* ============ 固定转化条 ============ */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:rgba(255,255,255,.98);
  border-top:1px solid var(--line);
  box-shadow:0 -8px 24px rgba(16,26,43,.08);
  transform:translateY(115%);
  transition:transform .32s cubic-bezier(.4,0,.2,1);
  backdrop-filter:blur(8px);
}
.sticky-bar.is-visible{transform:translateY(0)}
.sticky-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:64px;
}
.sticky-text{
  display:flex;align-items:center;gap:10px;
  font-size:14.5px;color:var(--ink);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.sticky-text i{
  width:8px;height:8px;border-radius:50%;background:var(--cyan);flex:none;
  box-shadow:0 0 0 4px rgba(24,184,178,.16);
}
.sticky-bar .btn{height:44px;padding:0 22px;font-size:14.5px}

/* 图片失败占位 */
img.img-fail{
  background:
    radial-gradient(circle at 22% 30%,rgba(47,95,140,.16),transparent 45%),
    linear-gradient(140deg,#DCE9F6,#EAF2FA);
  object-fit:cover;
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .brand{padding:0 24px}
  .nav-link{padding:9px 10px;font-size:14.5px}
  .split{gap:44px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .hero{padding:56px 0 64px}
  .hero-grid{gap:36px}
  .nav-link{font-size:14px;padding:8px 8px}
  .brand{padding:0 14px}
  .brand-name{font-size:17.5px}
  .strip{grid-template-columns:repeat(3,1fr)}
  .strip-item:nth-child(3n){border-right:0}
  .strip-item:nth-child(n+4){border-top:1px solid var(--line)}
  .faq-grid{grid-template-columns:1fr;gap:36px}
  .faq-aside{position:static}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:768px){
  body{padding-bottom:76px}
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:grid}
  .nav-wrap{height:64px;grid-template-columns:1fr auto 1fr}
  .brand{grid-column:2;justify-self:center;padding:0}
  .brand-sub{display:none}
  .brand-name{font-size:17px}
  .brand-mark{width:34px;height:34px;border-radius:10px}
  .nav-right-group{justify-self:end}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:clamp(1.85rem,6vw,2.4rem)}
  .hero-figure img{aspect-ratio:16/10}
  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .section-head{margin-bottom:32px}
  .split,.split.is-reverse{grid-template-columns:1fr;gap:26px}
  .split.is-reverse .split-media{order:0}
  .split + .split{margin-top:52px}
  .split-media::before{display:none}
  .scene-grid{grid-template-columns:1fr;gap:26px}
  .strip{grid-template-columns:1fr 1fr}
  .strip-item{border-right:1px solid var(--line)!important}
  .strip-item:nth-child(2n){border-right:0!important}
  .strip-item:nth-child(n+3){border-top:1px solid var(--line)}
  .form-card{padding:24px}
  .form-row{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .sticky-bar{transform:translateY(0)}
  .sticky-inner{height:58px;padding-bottom:env(safe-area-inset-bottom)}
  .sticky-text{font-size:13.5px}
  .sticky-bar .btn{height:40px;padding:0 16px;font-size:13.5px}
  .hero-actions .btn{flex:1 1 100%}
}
@media (max-width:560px){
  .container{padding:0 20px}
  .hero-actions{gap:12px}
  .hero-points{gap:10px 18px}
  .strip-num{font-size:1.3rem}
  .strip-item{padding:18px 16px}
  .form-card{padding:20px}
  .sticky-text span{display:none}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: category6 */
:root{
  --primary:#2F5F8C;
  --primary-dark:#234A70;
  --accent:#18B8B2;
  --cta:#F08A5D;
  --cta-dark:#D97046;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --surface-alt:#EAF2FA;
  --border:#DCE6F2;
  --ink:#162234;
  --body:#2B3A4D;
  --muted:#6B7C91;
  --success:#2E9E6B;
  --danger:#D9534F;
  --footer:#101A2B;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:12px;
  --shadow-sm:0 2px 8px rgba(16,26,43,.06);
  --shadow-md:0 8px 24px rgba(16,26,43,.08);
  --shadow-lg:0 18px 40px rgba(16,26,43,.12);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei","Heiti SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--body);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  padding-bottom:80px;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.28}
p{margin:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
svg{display:block}
::selection{background:rgba(47,95,140,.18)}
:focus-visible{outline:3px solid rgba(47,95,140,.35);outline-offset:2px;border-radius:8px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm)}
.header-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:76px;display:grid;grid-template-columns:1fr auto 1fr;
  align-items:center;gap:16px;position:relative;
}
.nav-left{display:flex;gap:4px;justify-content:flex-end;align-items:center}
.nav-right{display:flex;gap:4px;justify-content:flex-start;align-items:center}
.nav-link{
  position:relative;display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:15px;color:var(--body);white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:var(--surface-alt);color:var(--primary-dark)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  border-radius:2px;background:var(--primary);
}
.brand{display:flex;align-items:center;gap:10px;padding:0 34px;justify-self:center}
.brand-mark{
  width:36px;height:36px;flex:none;border-radius:11px;
  display:grid;place-items:center;color:#fff;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  box-shadow:0 4px 12px rgba(47,95,140,.28);
}
.brand-mark svg{width:20px;height:20px}
.brand-name{display:block;font-size:19px;font-weight:700;color:var(--ink);letter-spacing:.5px;line-height:1.2}
.brand-sub{display:block;font-size:10px;letter-spacing:2px;color:var(--muted);line-height:1.4}
.nav-toggle{
  display:none;position:absolute;right:20px;top:50%;transform:translateY(-50%);
  width:44px;height:44px;border-radius:10px;border:1px solid var(--border);
  background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:.2s}
.nav-toggle:hover{background:var(--surface-alt)}

/* 移动端抽屉 */
.mobile-menu{
  position:fixed;inset:0;z-index:120;background:rgba(16,26,43,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.mobile-menu.is-open{opacity:1;visibility:visible}
.mobile-panel{
  position:absolute;top:0;left:0;right:0;background:#fff;
  border-radius:0 0 20px 20px;padding:18px 20px 26px;
  transform:translateY(-100%);transition:transform .28s ease;
  max-height:88vh;overflow-y:auto;
}
.mobile-menu.is-open .mobile-panel{transform:translateY(0)}
.mobile-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--border)}
.mobile-head .brand-name{font-size:17px}
.mobile-close{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--border);
  font-size:20px;line-height:1;color:var(--muted);display:grid;place-items:center;background:#fff;
}
.mobile-close:hover{color:var(--primary);background:var(--surface-alt)}
.mobile-nav{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:18px}
.mobile-nav a{
  padding:12px 14px;border-radius:10px;background:var(--bg);
  font-size:15px;color:var(--body);border:1px solid transparent;
}
.mobile-nav a:hover{background:var(--surface-alt);border-color:var(--border);color:var(--primary-dark)}
.mobile-nav a.is-active{color:var(--primary);font-weight:600;background:var(--surface-alt);border-color:#C9DAEB}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(47,95,140,.24)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(35,74,112,.26)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 12px rgba(47,95,140,.2)}
.btn-ghost{background:#fff;color:var(--primary);border-color:#C9DAEB}
.btn-ghost:hover{background:var(--surface-alt);border-color:var(--primary);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-cta{background:var(--cta);color:#fff;box-shadow:0 6px 16px rgba(240,138,93,.3)}
.btn-cta:hover{background:var(--cta-dark);transform:translateY(-1px);box-shadow:0 10px 22px rgba(217,112,70,.3)}
.btn-cta:active{transform:translateY(0)}
.btn-light{background:#fff;color:var(--primary-dark)}
.btn-light:hover{background:#E9F1FA;transform:translateY(-1px)}
.btn-sm{height:42px;padding:0 20px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.btn:disabled,.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

.text-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--primary);transition:gap .2s ease,color .2s ease;
}
.text-link svg{width:15px;height:15px;transition:transform .2s ease}
.text-link:hover{color:var(--primary-dark)}
.text-link:hover svg{transform:translateX(3px)}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:68px 0 64px;
  background:linear-gradient(180deg,#EEF5FC 0%,#F7F9FC 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle at 1px 1px,rgba(47,95,140,.20) 1px,transparent 0);
  background-size:26px 26px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 72%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 72%);
  opacity:.55;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-160px;width:520px;height:520px;
  border-radius:50%;border:1px solid rgba(47,95,140,.12);pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:600;letter-spacing:1.4px;color:var(--primary);
  background:rgba(47,95,140,.08);border-radius:999px;padding:6px 14px;margin-bottom:20px;
}
.eyebrow::before{content:"";width:16px;height:2px;border-radius:2px;background:var(--accent)}
.hero h1{
  font-size:clamp(2.1rem,3.9vw,3.15rem);
  letter-spacing:-.5px;margin-bottom:18px;
}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-sub{font-size:18px;line-height:1.75;color:var(--muted);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:28px}
.hero-points li{
  display:flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);
}
.hero-points svg{width:16px;height:16px;color:var(--accent);flex:none}
.hero-visual{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid rgba(255,255,255,.9);
  box-shadow:var(--shadow-lg);
  background:linear-gradient(135deg,#EAF2FA,#DCE6F2);
  aspect-ratio:16/11;
}
.hero-visual img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,26,43,0) 45%,rgba(16,26,43,.42) 100%);
}
.hero-tag{
  position:absolute;left:18px;bottom:18px;z-index:2;
  background:rgba(255,255,255,.94);backdrop-filter:blur(4px);
  border-radius:12px;padding:10px 16px;box-shadow:var(--shadow-sm);
  font-size:13px;font-weight:600;color:var(--primary-dark);
  display:flex;align-items:center;gap:8px;
}
.hero-tag::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent)}

/* ============ 信任条 ============ */
.trust-bar{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.trust-list{display:grid;grid-template-columns:repeat(4,1fr)}
.trust-item{
  display:flex;align-items:flex-start;gap:12px;padding:24px 22px;
  border-right:1px solid var(--border);
}
.trust-item:last-child{border-right:0}
.trust-item svg{width:20px;height:20px;color:var(--primary);flex:none;margin-top:3px}
.trust-item strong{display:block;font-size:15px;color:var(--ink);font-weight:600;line-height:1.5}
.trust-item span{display:block;font-size:13px;color:var(--muted);line-height:1.65;margin-top:2px}

/* ============ 板块通用 ============ */
.section{padding:88px 0}
.section--white{background:#fff}
.section-head{max-width:740px;margin-bottom:44px}
.section-head h2{font-size:clamp(1.7rem,2.6vw,2.25rem)}
.section-head p{margin-top:14px;font-size:16px;color:var(--muted);line-height:1.8}
.section-head-row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  flex-wrap:wrap;margin-bottom:44px;
}

/* ============ 合作方向 ============ */
.coop-grid{display:grid;grid-template-columns:1.08fr 1fr;gap:24px;align-items:stretch}
.coop-feature{
  display:flex;flex-direction:column;background:#fff;
  border:1px solid var(--border);border-radius:18px;overflow:hidden;
  box-shadow:var(--shadow-md);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.coop-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#C9DAEB}
.coop-feature-media{position:relative;height:248px;background:linear-gradient(135deg,#EAF2FA,#DCE6F2);overflow:hidden}
.coop-feature-media img{width:100%;height:100%;object-fit:cover}
.coop-feature-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,26,43,0) 55%,rgba(16,26,43,.35) 100%);
}
.coop-feature-body{padding:28px 28px 30px;display:flex;flex-direction:column;gap:12px;flex:1}
.coop-feature-body h3{font-size:1.3rem}
.coop-feature-body p{font-size:15px;color:var(--muted);line-height:1.8}
.coop-stack{display:grid;gap:24px}
.coop-card{
  display:flex;gap:18px;align-items:flex-start;
  background:#fff;border:1px solid var(--border);border-radius:18px;
  padding:26px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.coop-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#C9DAEB}
.icon-badge{
  width:46px;height:46px;flex:none;border-radius:13px;
  display:grid;place-items:center;color:var(--primary);
  background:var(--surface-alt);
}
.icon-badge svg{width:22px;height:22px}
.coop-card h3{font-size:1.12rem;margin-bottom:8px}
.coop-card p{font-size:14.5px;color:var(--muted);line-height:1.8}
.coop-wide{
  margin-top:24px;display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;padding:28px 32px;border-radius:18px;
  border:1px solid var(--border);
  background:linear-gradient(115deg,#EAF2FA 0%,#F7F9FC 62%);
}
.coop-wide-main{display:flex;gap:18px;align-items:flex-start;max-width:720px}
.coop-wide h3{font-size:1.12rem;margin-bottom:8px}
.coop-wide p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* ============ 指标带 ============ */
.metrics-band{
  border-radius:22px;padding:42px 40px;
  background:linear-gradient(120deg,#162234 0%,#22374F 55%,#2F5F8C 100%);
  color:#D9E4F0;display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
  box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
}
.metrics-band::before{
  content:"";position:absolute;right:-80px;top:-90px;width:300px;height:300px;border-radius:50%;
  border:1px solid rgba(255,255,255,.12);
}
.metrics-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle at 1px 1px,rgba(255,255,255,.18) 1px,transparent 0);
  background-size:24px 24px;opacity:.35;
  -webkit-mask-image:linear-gradient(120deg,#000,transparent 70%);
  mask-image:linear-gradient(120deg,#000,transparent 70%);
}
.metric{position:relative;z-index:1}
.metric-num{
  font-size:2.1rem;font-weight:700;color:#fff;line-height:1.2;
  font-variant-numeric:tabular-nums;letter-spacing:-.5px;
}
.metric-num small{font-size:.95rem;font-weight:600;margin-left:4px;color:var(--accent)}
.metric-label{font-size:14px;color:#9FB4CB;margin-top:8px;line-height:1.7}

/* ============ 流程时间轴 ============ */
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.step{
  position:relative;background:#fff;border:1px solid var(--border);
  border-radius:16px;padding:26px 22px 24px;box-shadow:var(--shadow-sm);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#C9DAEB}
.step::before{
  content:"";position:absolute;top:-1px;left:22px;right:22px;height:3px;
  border-radius:0 0 3px 3px;background:var(--accent);opacity:.85;
}
.step-num{
  font-size:13px;font-weight:700;letter-spacing:2px;color:var(--accent);
  font-variant-numeric:tabular-nums;margin-bottom:12px;
}
.step h3{font-size:1.02rem;margin-bottom:10px}
.step p{font-size:14px;color:var(--muted);line-height:1.75}

/* ============ 咨询区 ============ */
.contact-grid{display:grid;grid-template-columns:1.28fr .72fr;gap:28px;align-items:start}
.form-card{
  background:#fff;border:1px solid var(--border);border-radius:20px;
  padding:36px;box-shadow:var(--shadow-md);
}
.form-card h2{font-size:clamp(1.5rem,2.2vw,1.9rem);margin-bottom:10px}
.form-card .form-intro{font-size:15px;color:var(--muted);margin-bottom:28px;line-height:1.8}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field label .req{color:var(--danger);margin-left:2px}
.field input[type="text"],
.field input[type="tel"],
.field input[type="month"],
.field select,
.field textarea{
  width:100%;border:1px solid var(--border);border-radius:var(--radius-input);
  background:#fff;color:var(--body);font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input[type="text"],
.field input[type="tel"],
.field input[type="month"],
.field select{height:48px;padding:0 14px}
.field select{appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236B7C91' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;background-size:16px;padding-right:40px}
.field textarea{min-height:124px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#9AAABD}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,95,140,.15);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{
  border-color:var(--danger);box-shadow:0 0 0 3px rgba(217,83,79,.12);
}
.field-error{display:none;font-size:12.5px;color:var(--danger);margin-top:6px}
.field.has-error .field-error{display:block}
.check-field{display:flex;align-items:flex-start;gap:10px;margin:6px 0 22px}
.check-field input[type="checkbox"]{
  width:18px;height:18px;flex:none;margin-top:3px;accent-color:var(--primary);cursor:pointer;
}
.check-field label{font-size:13.5px;color:var(--muted);font-weight:400;line-height:1.7;margin:0}
.check-field a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.form-note{
  display:none;margin-top:18px;padding:12px 16px;border-radius:10px;
  background:rgba(46,158,107,.1);border:1px solid rgba(46,158,107,.3);
  color:#1F7A52;font-size:14px;line-height:1.7;
}
.form-note.is-visible{display:block}

.info-card{
  position:sticky;top:100px;
  background:var(--surface-alt);border:1px solid var(--border);
  border-radius:20px;padding:30px;
}
.info-card h3{font-size:1.15rem;margin-bottom:6px}
.info-card .info-lead{font-size:14px;color:var(--muted);margin-bottom:22px;line-height:1.75}
.info-list{display:grid;gap:18px}
.info-item{display:flex;gap:13px;align-items:flex-start}
.info-item svg{width:19px;height:19px;color:var(--primary);flex:none;margin-top:3px}
.info-item strong{display:block;font-size:13px;color:var(--muted);font-weight:500;line-height:1.5}
.info-item span{display:block;font-size:15px;color:var(--ink);font-weight:600;line-height:1.6;word-break:break-all}
.info-foot{
  margin-top:24px;padding-top:20px;border-top:1px dashed #C4D6E8;
  font-size:13px;color:var(--muted);line-height:1.8;
}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:56px;align-items:start}
.faq-side h2{font-size:clamp(1.7rem,2.6vw,2.25rem);margin-bottom:16px}
.faq-side p{font-size:15.5px;color:var(--muted);line-height:1.85}
.faq-side .btn{margin-top:26px}
.faq-list{border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:19px 0;min-height:56px;text-align:left;
  font-size:16px;font-weight:600;color:var(--ink);
  transition:color .2s ease;
}
.faq-q:hover{color:var(--primary)}
.faq-icon{
  width:26px;height:26px;flex:none;border-radius:8px;
  display:grid;place-items:center;background:var(--surface-alt);color:var(--primary);
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-icon svg{width:14px;height:14px}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{
  padding:0 0 22px;font-size:15px;color:var(--muted);line-height:1.85;
  border-left:3px solid var(--accent);padding-left:16px;margin-left:2px;
}

/* ============ 底部 CTA ============ */
.cta-band{
  border-radius:24px;padding:52px 48px;
  background:linear-gradient(120deg,#234A70 0%,#2F5F8C 60%,#3A6E9E 100%);
  color:#E6EFF8;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;position:relative;overflow:hidden;
  box-shadow:var(--shadow-lg);
}
.cta-band::before{
  content:"";position:absolute;right:-60px;bottom:-90px;width:280px;height:280px;
  border-radius:50%;border:1px solid rgba(255,255,255,.15);
}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,2.4vw,2rem);margin-bottom:12px;position:relative;z-index:1}
.cta-band p{font-size:15px;color:#BFD3E6;max-width:600px;line-height:1.8;position:relative;z-index:1}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}

/* ============ 页脚 ============ */
.site-footer{background:var(--footer);color:#B9C7D8;padding:64px 0 0;margin-top:88px}
.footer-grid{display:grid;grid-template-columns:1.5fr .8fr .8fr 1.1fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-brand .brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,#2F5F8C,#18B8B2);
  box-shadow:none;
}
.footer-brand .brand-mark svg{width:18px;height:18px}
.footer-brand .brand-name{color:#fff;font-size:17px}
.footer-brand .brand-sub{color:#7089A3}
.site-footer p{font-size:14px;line-height:1.85;color:#93A8BF;max-width:340px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:#9DB2C8;transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:#9DB2C8;line-height:1.7}
.footer-contact svg{width:16px;height:16px;flex:none;margin-top:4px;color:#6F8AA6}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0 26px;display:flex;justify-content:space-between;
  gap:12px;flex-wrap:wrap;font-size:13px;color:#7089A3;
}

/* ============ 固定转化条 ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:#fff;border-top:1px solid var(--border);
  box-shadow:0 -8px 24px rgba(16,26,43,.08);
  transform:translateY(110%);transition:transform .3s ease;
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-cta.is-visible{transform:translateY(0)}
.sticky-inner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  height:64px;
}
.sticky-text{
  font-size:14.5px;color:var(--body);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.sticky-text strong{color:var(--primary-dark);font-weight:600}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .nav-link{padding:8px 9px;font-size:14.5px}
  .brand{padding:0 20px}
  .brand-name{font-size:17.5px}
}
@media (max-width:1024px){
  .header-inner{grid-template-columns:1fr auto 1fr;gap:10px}
  .nav-left,.nav-right{display:none}
  .nav-toggle{display:flex}
  .brand{padding:0}
  .hero{padding:56px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-sub{max-width:none}
  .hero-visual{max-width:640px;aspect-ratio:16/10}
  .section{padding:72px 0}
  .trust-list{grid-template-columns:repeat(2,1fr)}
  .trust-item:nth-child(2){border-right:0}
  .trust-item:nth-child(1),.trust-item:nth-child(2){border-bottom:1px solid var(--border)}
  .coop-grid{grid-template-columns:1fr}
  .metrics-band{grid-template-columns:repeat(2,1fr);gap:26px;padding:36px 32px}
  .timeline{grid-template-columns:repeat(3,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .info-card{position:static}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-grid > div:first-child{grid-column:1 / -1}
  .site-footer p{max-width:none}
}
@media (max-width:768px){
  body{padding-bottom:76px}
  .header-inner{height:64px;padding:0 20px}
  .container{padding:0 20px}
  .brand-mark{width:32px;height:32px}
  .brand-name{font-size:16.5px}
  .brand-sub{display:none}
  .hero{padding:44px 0 44px}
  .hero h1{font-size:clamp(1.75rem,6.5vw,2.3rem)}
  .hero-sub{font-size:16.5px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-visual{aspect-ratio:16/11}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  .section-head-row{margin-bottom:32px}
  .trust-item{padding:20px 18px}
  .timeline{grid-template-columns:1fr 1fr}
  .form-card{padding:26px 22px}
  .form-row{grid-template-columns:1fr;gap:0}
  .coop-wide{padding:24px}
  .cta-band{padding:36px 26px}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn{flex:1 1 100%}
  .sticky-inner{height:auto;padding:10px 20px;gap:12px}
  .sticky-text{font-size:13px;white-space:normal;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .sticky-inner .btn{flex:none}
  .site-footer{margin-top:56px;padding-top:48px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-bottom{justify-content:flex-start}
}
@media (max-width:560px){
  .trust-list{grid-template-columns:1fr}
  .trust-item{border-right:0;border-bottom:1px solid var(--border)}
  .trust-item:last-child{border-bottom:0}
  .metrics-band{grid-template-columns:1fr 1fr;padding:30px 22px;gap:22px;border-radius:18px}
  .metric-num{font-size:1.7rem}
  .timeline{grid-template-columns:1fr}
  .coop-feature-media{height:200px}
  .coop-card{padding:22px;gap:14px}
  .coop-wide-main{flex-direction:column;gap:12px}
  .faq-q{font-size:15px;padding:16px 0}
  .btn{height:46px;padding:0 20px}
  .mobile-nav{grid-template-columns:1fr}
}