/* roulang page: index */
:root{
  --c-primary:#1B5AA8;
  --c-primary-deep:#0E3566;
  --c-primary-soft:#E9F1FB;
  --c-primary-line:#C7DAF2;
  --c-accent:#E1763A;
  --c-accent-deep:#C25A22;
  --c-ink:#0F1E30;
  --c-ink-2:#3C5068;
  --c-ink-3:#7A8CA1;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --c-ok:#1E8E6E;
  --c-warn:#C98A12;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,30,48,.05),0 6px 18px rgba(15,30,48,.06);
  --sh-2:0 10px 30px rgba(15,30,48,.10);
  --sh-3:0 12px 40px rgba(14,53,102,.16);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  padding-bottom:88px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,border-color .2s ease}
a:hover{color:var(--c-accent-deep)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--c-ink)}
h1{font-size:clamp(28px,4.2vw,52px);line-height:1.25}
h2{font-size:clamp(23px,2.6vw,34px);line-height:1.3}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:18px;line-height:1.5;font-weight:600}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px}
.section{padding:96px 0}
.section--plain{background:var(--c-surface)}
.section--soft{background:var(--c-bg)}

/* ---------- 导航 Dock ---------- */
.site-dock{
  position:fixed;top:16px;left:0;right:0;z-index:80;
  padding:0 20px;pointer-events:none;
  transition:top .25s ease;
}
.site-dock.is-scrolled{top:10px}
.dock-inner{
  pointer-events:auto;
  max-width:1080px;margin:0 auto;
  display:flex;align-items:center;gap:16px;
  height:64px;padding:0 20px;
  background:rgba(255,255,255,.9);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-3);
  transition:height .25s ease,box-shadow .25s ease;
}
.site-dock.is-scrolled .dock-inner{height:56px;box-shadow:0 14px 34px rgba(14,53,102,.18)}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  background:linear-gradient(140deg,var(--c-primary),var(--c-primary-deep));
  display:grid;place-items:center;color:#fff;flex:0 0 auto;
}
.brand-text{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--c-primary-deep)}
.dock-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.dock-nav a{
  display:inline-flex;align-items:center;height:38px;padding:0 15px;
  border-radius:var(--r-pill);font-size:15px;font-weight:500;color:var(--c-ink-2);
  white-space:nowrap;transition:background .2s ease,color .2s ease;
}
.dock-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary-deep)}
.dock-nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary-deep);font-weight:600}
.dock-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:38px;height:38px;border-radius:50%;border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink-2);display:grid;place-items:center;cursor:pointer;
  transition:all .2s ease;
}
.icon-btn:hover{border-color:var(--c-primary-line);color:var(--c-primary);background:var(--c-primary-soft)}
.icon-btn:active{transform:scale(.96)}
.menu-toggle{display:none}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--c-ink-2);border-radius:2px;margin:3px auto}
.menu-toggle span:last-child{width:12px}

/* ---------- 移动面板 ---------- */
.mobile-panel{
  position:fixed;inset:0;z-index:120;background:#fff;
  padding:22px 20px 32px;
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-14px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.mobile-panel.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.mobile-panel__head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.mobile-panel__nav{display:flex;flex-direction:column;margin-top:8px}
.mobile-panel__nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;font-size:16px;color:var(--c-ink);border-bottom:1px solid var(--c-line);
}
.mobile-panel__nav a.is-active{color:var(--c-primary-deep);font-weight:600}
.mobile-panel .btn{margin-top:auto}

/* ---------- 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  white-space:nowrap;transition:background .2s ease,color .2s ease,transform .15s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(225,118,58,.26)}
.btn-primary:hover{background:var(--c-accent-deep);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary-line)}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);transform:translateY(-1px)}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(27,90,168,.35)}
.btn:active{transform:scale(.98)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--c-primary);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.link-more:hover{color:var(--c-accent-deep);border-bottom-color:var(--c-accent-deep)}
.tag{
  display:inline-block;padding:3px 11px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.4;letter-spacing:.04em;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
}
.tag--accent{background:rgba(225,118,58,.12);color:var(--c-accent-deep)}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:142px 0 92px;
  background:
    radial-gradient(circle at 10% 16%, rgba(27,90,168,.10), transparent 46%),
    radial-gradient(circle at 88% 6%, rgba(225,118,58,.08), transparent 44%),
    var(--c-bg);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(14,53,102,.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(14,53,102,.055) 1px, transparent 1px);
  background-size:64px 64px;
  opacity:.85;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-primary-line);
  color:var(--c-primary-deep);font-size:13px;letter-spacing:.04em;font-weight:600;
}
.hero-copy h1{margin-top:20px}
.hero-sub{margin-top:18px;font-size:18px;line-height:1.8;color:var(--c-ink-2);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:28px;padding-top:22px;border-top:1px solid var(--c-line)}
.hero-points li{position:relative;padding-left:16px;font-size:14px;color:var(--c-ink-3)}
.hero-points li::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--c-accent);
}
.hero-figure{position:relative}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--sh-2);
}
.hero-note{
  position:absolute;left:20px;bottom:20px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);padding:14px 20px;min-width:190px;
  display:flex;flex-direction:column;gap:2px;
}
.hero-note strong{font-size:15px;color:var(--c-primary-deep)}
.hero-note span{font-size:13px;color:var(--c-ink-3)}

/* ---------- 区块标题 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head h2{padding-left:14px;position:relative}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.28em;
  width:4px;height:18px;border-radius:2px;background:var(--c-primary);
}
.section-sub{margin-top:10px;padding-left:14px;color:var(--c-ink-3);font-size:15px}

/* ---------- 卡片通用 ---------- */
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--c-primary-line)}

/* ---------- 内容入口区 ---------- */
.entry-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:stretch}
.entry-large{display:flex;flex-direction:column}
.entry-large__media{aspect-ratio:16/9;overflow:hidden}
.entry-large__media img{width:100%;height:100%;object-fit:cover}
.entry-large__body{padding:28px;display:flex;flex-direction:column;gap:14px;flex:1}
.entry-large__body p{color:var(--c-ink-2);font-size:15px}
.entry-stack{display:grid;gap:24px;grid-template-rows:1fr 1fr}
.entry-small{display:flex;gap:18px;padding:22px}
.entry-small__thumb{
  width:110px;flex:0 0 110px;aspect-ratio:4/3;border-radius:var(--r-md);overflow:hidden;background:var(--c-primary-soft);
}
.entry-small__thumb img{width:100%;height:100%;object-fit:cover}
.entry-small__body h3{font-size:17px}
.entry-small__body p{margin-top:8px;font-size:14px;color:var(--c-ink-3);line-height:1.75}

/* ---------- 图文交替区 ---------- */
.zigzag{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center}
.zigzag + .zigzag{margin-top:72px}
.zigzag--reverse .zigzag__media{order:2}
.zigzag__media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--sh-2);
}
.zigzag__copy h3{margin-bottom:16px}
.zigzag__copy > p{color:var(--c-ink-2);font-size:16px}
.point-list{margin-top:22px;display:grid;gap:12px}
.point-list li{position:relative;padding-left:20px;font-size:15px;color:var(--c-ink-2)}
.point-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:8px;height:8px;border-radius:50%;background:var(--c-primary);
}
.note-line{
  margin-top:22px;padding:14px 18px;border-radius:var(--r-md);
  background:var(--c-primary-soft);color:var(--c-primary-deep);
  font-size:14px;border-left:3px solid var(--c-primary);
}

/* ---------- 数据与反馈 ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px 22px;box-shadow:var(--sh-1);
  transition:box-shadow .2s ease,transform .2s ease;
}
.stat:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.stat__key{font-size:13px;letter-spacing:.04em;color:var(--c-ink-3)}
.stat__val{display:block;margin-top:6px;font-size:21px;font-weight:700;color:var(--c-primary-deep);font-variant-numeric:tabular-nums}
.stat__desc{margin-top:8px;font-size:14px;color:var(--c-ink-2);line-height:1.7}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:24px}
.quote{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:26px;box-shadow:var(--sh-1);
}
.quote p{font-size:15px;color:var(--c-ink-2);line-height:1.85}
.quote-foot{display:flex;align-items:center;gap:12px;margin-top:20px;font-size:13px;color:var(--c-ink-3)}
.avatar{
  width:38px;height:38px;border-radius:50%;flex:0 0 38px;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
  display:grid;place-items:center;font-weight:700;font-size:14px;
}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  padding:7px 16px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:#fff;
  font-size:13px;color:var(--c-ink-2);letter-spacing:.02em;
  transition:all .2s ease;
}
.chip:hover{border-color:var(--c-primary-line);color:var(--c-primary-deep);background:var(--c-primary-soft)}

/* ---------- 内容列表 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column}
.news-card__link{display:flex;flex-direction:column;height:100%;color:inherit}
.news-card__link:hover{color:inherit}
.news-card__media{aspect-ratio:16/9;overflow:hidden;background:var(--c-primary-soft)}
.news-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-card__media img{transform:scale(1.03)}
.news-card__body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-card__title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.news-card:hover .news-card__title{color:var(--c-primary-deep)}
.news-card__desc{
  font-size:14px;color:var(--c-ink-3);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__time{margin-top:auto;font-size:13px;color:var(--c-ink-3);font-variant-numeric:tabular-nums}
.empty-state{
  min-height:240px;border:1px dashed var(--c-primary-line);border-radius:var(--r-lg);
  background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:36px;text-align:center;
}
.empty-state__icon{color:var(--c-primary-line)}
.empty-state p{font-size:15px;color:var(--c-ink-3)}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-intro p{margin-top:16px;font-size:15px;color:var(--c-ink-2)}
.faq-list{display:grid;gap:14px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--c-primary-line)}
.faq-item[open]{box-shadow:var(--sh-1)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--c-ink);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex:0 0 18px;width:18px;height:18px;
  background:
    linear-gradient(var(--c-primary),var(--c-primary)) center/12px 2px no-repeat,
    linear-gradient(var(--c-primary),var(--c-primary)) center/2px 12px no-repeat;
  transition:transform .25s ease;
}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-item[open] summary{color:var(--c-primary-deep)}
.faq-answer{padding:0 24px 22px;font-size:15px;color:var(--c-ink-2);line-height:1.85}

/* ---------- 结尾 CTA ---------- */
.cta-block{
  background:linear-gradient(150deg,#E9F1FB 0%,#F6F8FC 100%);
  border:1px solid var(--c-primary-line);
  border-radius:var(--r-lg);
  padding:66px 40px;text-align:center;
}
.cta-block h2{max-width:640px;margin:0 auto}
.cta-block p{margin:16px auto 0;max-width:600px;color:var(--c-ink-2);font-size:16px}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:30px}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-primary-deep);color:rgba(255,255,255,.76);
  padding:66px 0 22px;position:relative;overflow:hidden;
}
.site-footer::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size:60px 60px;
}
.footer-inner{position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:4fr 2fr 2fr 4fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14)}
.footer-brand span{font-size:16px;font-weight:700;color:#fff}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:320px}
.site-footer h4{color:#fff;font-size:15px;letter-spacing:.04em;margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.68)}
.footer-links a:hover{color:var(--c-accent)}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:6px}
.field label .req{color:var(--c-accent)}
.field input,.field textarea{
  width:100%;height:44px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);color:#fff;
  padding:0 14px;font-size:14px;font-family:inherit;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{height:88px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.38)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--c-accent);background:rgba(255,255,255,.14);
  box-shadow:0 0 0 2px rgba(225,118,58,.32);
}
.footer-note{font-size:13px;color:rgba(255,255,255,.5);margin-top:10px}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 底部固定条 ---------- */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:100;
  background:#fff;border-top:1px solid var(--c-line);
  box-shadow:0 -8px 28px rgba(14,53,102,.10);
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-bar .container{height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.sticky-text{font-size:15px;color:var(--c-ink-2)}
.sticky-text strong{color:var(--c-primary-deep)}
.sticky-right{display:flex;align-items:center;gap:10px}
.sticky-close{
  width:32px;height:32px;border-radius:50%;border:1px solid var(--c-line);
  background:#fff;color:var(--c-ink-3);cursor:pointer;display:grid;place-items:center;
  transition:all .2s ease;
}
.sticky-close:hover{color:var(--c-ink);border-color:var(--c-primary-line)}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding-left:24px;padding-right:24px}
  .section{padding:64px 0}
  .hero{padding:118px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-figure img{aspect-ratio:16/10}
  .entry-grid{grid-template-columns:1fr}
  .entry-stack{grid-template-rows:auto}
  .zigzag{grid-template-columns:1fr;gap:28px}
  .zigzag + .zigzag{margin-top:48px}
  .zigzag--reverse .zigzag__media{order:0}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .quote-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .dock-nav,.dock-actions .btn,.dock-actions .icon-btn{display:none}
  .menu-toggle{display:grid;place-items:center}
  .dock-inner{justify-content:space-between}
}
@media (max-width:639px){
  body{padding-bottom:76px}
  .container{padding-left:20px;padding-right:20px}
  .section{padding:48px 0}
  .hero{padding:104px 0 48px}
  .hero-sub{font-size:16px}
  .hero-cta .btn{width:100%}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .news-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-block{padding:44px 22px}
  .cta-actions .btn{width:100%}
  .sticky-bar .container{height:60px}
  .sticky-text{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .sticky-right .btn{height:40px;padding:0 16px;font-size:14px}
  .brand-text{font-size:15px}
  .entry-small{flex-direction:column}
  .entry-small__thumb{width:100%;flex:0 0 auto;aspect-ratio:16/9}
}

/* roulang page: category1 */
:root{
  --c-primary:#1B5AA8;
  --c-primary-deep:#0E3566;
  --c-primary-soft:#E9F1FB;
  --c-primary-line:#C7DAF2;
  --c-accent:#E1763A;
  --c-accent-deep:#C25A22;
  --c-ink:#0F1E30;
  --c-ink-2:#3C5068;
  --c-ink-3:#7A8CA1;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --c-success:#1E8E6E;
  --c-warn:#C98A12;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,30,48,.05), 0 6px 18px rgba(15,30,48,.06);
  --sh-2:0 10px 30px rgba(15,30,48,.10);
  --sh-3:0 12px 40px rgba(14,53,102,.16);
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,tabular-nums,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:116px 0 104px;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input,textarea{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(27,90,168,.16);}

h1{font-size:clamp(28px,4.2vw,50px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
h2{font-size:clamp(23px,2.6vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.01em;}
h3{font-size:22px;line-height:1.4;font-weight:600;letter-spacing:-.01em;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
p{color:var(--c-ink-2);}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section--soft{background:var(--c-surface);}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.sec-head .title-block{max-width:720px;}
.sec-head h2{margin-bottom:12px;}
.sec-head .lead{font-size:16px;color:var(--c-ink-2);line-height:1.85;}
.sec-line{display:inline-block;width:4px;height:18px;background:var(--c-primary);border-radius:2px;margin-right:12px;vertical-align:-2px;}
.sec-link{font-size:15px;font-weight:600;color:var(--c-primary);border-bottom:1px solid var(--c-primary-line);padding-bottom:2px;}
.sec-link:hover{color:var(--c-accent);border-color:var(--c-accent);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(225,118,58,.24);}
.btn-primary:hover{background:var(--c-accent-deep);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary-line);}
.btn-ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:var(--c-primary);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.6;cursor:not-allowed;transform:none;}
.button{background:var(--c-accent);border-radius:var(--r-pill);}
.button:hover{background:var(--c-accent-deep);}

.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.04em;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary-deep);
  border:1px solid var(--c-primary-line);
}
.badge--warn{background:#FDF4E3;color:#8A5F05;border-color:#F2DDB0;}
.badge--ok{background:#E6F4EF;color:#146A52;border-color:#BFE3D6;}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:16px;left:0;right:0;z-index:140;
  display:flex;justify-content:center;
  padding:0 20px;
  transition:top .25s ease;
}
.site-header.is-scrolled{top:10px;}
.dock{
  width:100%;max-width:1080px;height:64px;
  display:flex;align-items:center;gap:18px;
  padding:0 20px;
  background:rgba(255,255,255,.94);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-3);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:height .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled .dock{height:56px;box-shadow:var(--sh-2);}
.dock-brand{
  display:flex;align-items:center;gap:10px;
  font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;
  white-space:nowrap;flex:0 0 auto;
}
.dock-brand:hover{color:var(--c-primary-deep);}
.brand-mark{
  width:34px;height:34px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:linear-gradient(140deg,var(--c-primary) 0%,var(--c-primary-deep) 100%);
  color:#fff;
}
.dock-nav{
  display:flex;align-items:center;gap:6px;
  margin-left:8px;flex:1 1 auto;
}
.dock-nav a{
  position:relative;
  display:inline-flex;align-items:center;
  height:38px;padding:0 14px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--c-ink-2);
  transition:background-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.dock-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.dock-nav a.is-active{
  color:var(--c-primary-deep);font-weight:600;background:var(--c-primary-soft);
  box-shadow:inset 0 -2px 0 var(--c-primary);
}
.dock-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-ink-2);
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:var(--c-primary-soft);color:var(--c-primary);border-color:var(--c-primary-line);}
.menu-toggle{
  display:none;
  width:42px;height:42px;
  align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-ink);
}
.menu-toggle:hover{background:var(--c-primary-soft);}
.menu-toggle svg{width:22px;height:22px;}

.mobile-panel{
  position:fixed;top:92px;left:16px;right:16px;z-index:139;
  display:none;
  padding:10px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
}
.mobile-panel.is-open{display:block;}
.mobile-panel a{
  display:flex;align-items:center;
  min-height:52px;padding:0 16px;
  border-radius:var(--r-md);
  font-size:16px;color:var(--c-ink-2);
  border-bottom:1px solid var(--c-line);
}
.mobile-panel a:last-of-type{border-bottom:0;}
.mobile-panel a.is-active{color:var(--c-primary-deep);font-weight:600;background:var(--c-primary-soft);}
.mobile-panel .panel-cta{margin-top:10px;padding:0 6px 6px;}

/* ============ 面包屑 ============ */
.crumb-bar{background:var(--c-surface);border-bottom:1px solid var(--c-line);}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  padding:16px 0;font-size:14px;color:var(--c-ink-3);
}
.crumb a{color:var(--c-ink-3);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C3CEDA;}
.crumb .current{color:var(--c-primary);font-weight:600;}

/* ============ 分类页首屏 ============ */
.cat-hero{
  position:relative;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);
  border-bottom:1px solid var(--c-line);
  overflow:hidden;
}
.cat-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(to right,rgba(27,90,168,.06) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(27,90,168,.06) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}
.cat-hero .grid-x{position:relative;z-index:2;align-items:center;}
.cat-hero-copy{padding:72px 0;}
.cat-hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.04em;font-weight:600;
  color:var(--c-primary-deep);
  background:var(--c-primary-soft);
  border:1px solid var(--c-primary-line);
  border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:20px;
}
.cat-hero h1{margin-bottom:16px;}
.cat-hero .sub{font-size:18px;line-height:1.8;color:var(--c-ink-2);max-width:620px;margin-bottom:16px;}
.cat-hero .desc{font-size:16px;line-height:1.9;color:var(--c-ink-2);max-width:640px;margin-bottom:28px;}
.cat-hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:26px;}
.trust-row{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:14px;color:var(--c-ink-3);
}
.trust-row span.dot{color:#C3CEDA;}

.hero-figure{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  border:1px solid var(--c-line);
  background:linear-gradient(140deg,#DCE8F7 0%,#C7DAF2 100%);
  aspect-ratio:4/3;
  margin:40px 0;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;left:18px;bottom:18px;right:18px;
  display:flex;align-items:center;gap:12px;
  padding:14px 16px;
  background:rgba(255,255,255,.96);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
}
.hero-float .num{
  font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--c-primary);line-height:1;
}
.hero-float .txt{font-size:13px;color:var(--c-ink-3);line-height:1.5;}

/* ============ 双栏内容 ============ */
.cat-body{padding:72px 0 88px;}
.anchor-nav{
  position:sticky;top:104px;
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  background:var(--c-surface);
  box-shadow:var(--sh-1);
  padding:22px 20px;
  margin-bottom:24px;
}
.anchor-nav .anchor-title{
  font-size:12px;letter-spacing:.04em;font-weight:700;color:var(--c-ink-3);
  margin-bottom:14px;text-transform:uppercase;
}
.anchor-nav ul{display:flex;flex-direction:column;gap:4px;}
.anchor-nav a{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;
  border-radius:10px;
  font-size:15px;color:var(--c-ink-2);
  transition:background-color .2s ease,color .2s ease;
}
.anchor-nav a::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:#CBD7E6;flex:0 0 auto;transition:background-color .2s ease;
}
.anchor-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.anchor-nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary-deep);font-weight:600;}
.anchor-nav a.is-active::before{background:var(--c-accent);}
.anchor-card{
  border-radius:var(--r-lg);
  background:var(--c-primary-soft);
  border:1px solid var(--c-primary-line);
  padding:22px 20px;
}
.anchor-card h4{font-size:16px;margin-bottom:8px;color:var(--c-primary-deep);}
.anchor-card p{font-size:14px;line-height:1.75;margin-bottom:16px;}

.content-stream{display:flex;flex-direction:column;gap:28px;}
.panel{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:34px 32px;
  transition:box-shadow .2s ease,transform .2s ease;
}
.panel:hover{box-shadow:var(--sh-2);}
.panel h2{margin-bottom:16px;font-size:clamp(22px,2.2vw,28px);}
.panel h3{margin-bottom:10px;}
.panel p{margin-bottom:14px;}
.panel p:last-child{margin-bottom:0;}
.panel-figure{
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--c-line);
  aspect-ratio:16/9;
  background:linear-gradient(140deg,#E4EDF9 0%,#CFE0F4 100%);
  margin:20px 0 8px;
}
.panel-figure img{width:100%;height:100%;object-fit:cover;}
.figcap{font-size:13px;color:var(--c-ink-3);line-height:1.7;}

.check-list{display:flex;flex-direction:column;gap:14px;margin:18px 0 4px;}
.check-list li{
  position:relative;
  padding-left:30px;
  font-size:15.5px;line-height:1.8;color:var(--c-ink-2);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:16px;height:16px;border-radius:50%;
  background:var(--c-primary-soft);
  border:1px solid var(--c-primary-line);
  box-shadow:inset 0 0 0 3px var(--c-surface),0 0 0 1px var(--c-primary-soft);
}
.check-list li::after{
  content:"";position:absolute;left:5px;top:15px;
  width:6px;height:6px;border-radius:50%;background:var(--c-primary);
}
.check-list li strong{color:var(--c-ink);font-weight:600;}

.steps{display:flex;flex-direction:column;gap:0;margin-top:20px;position:relative;}
.step{
  position:relative;
  padding:0 0 26px 46px;
  border-left:1px solid var(--c-primary-line);
  margin-left:12px;
}
.step:last-child{border-left-color:transparent;padding-bottom:0;}
.step .step-no{
  position:absolute;left:-13px;top:0;
  width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:12px;font-weight:700;
  background:var(--c-surface);color:var(--c-primary);
  border:1px solid var(--c-primary-line);
}
.step h4{font-size:17px;margin-bottom:6px;}
.step p{font-size:15px;line-height:1.8;margin-bottom:0;}

.mini-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:20px;}
.mini-card{
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:20px;
  background:linear-gradient(180deg,#FFFFFF 0%,#FBFCFE 100%);
}
.mini-card .mini-ico{
  width:38px;height:38px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);
  margin-bottom:14px;
}
.mini-card h4{font-size:17px;margin-bottom:8px;}
.mini-card p{font-size:14.5px;line-height:1.8;margin:0;color:var(--c-ink-2);}

.note-bar{
  display:flex;gap:14px;align-items:flex-start;
  border-left:3px solid var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:16px 20px;
  margin-top:20px;
}
.note-bar .note-ico{color:var(--c-primary);flex:0 0 auto;margin-top:3px;}
.note-bar p{margin:0;font-size:15px;color:var(--c-primary-deep);line-height:1.8;}

/* ============ FAQ ============ */
.faq-block{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;margin:0 auto;}
.faq-item{
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  background:var(--c-surface);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:var(--c-primary-line);box-shadow:var(--sh-1);}
.faq-item summary{
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;
  font-size:17px;font-weight:600;color:var(--c-ink);
  cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary-deep);}
.faq-item .plus{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);
  transition:transform .25s ease,background-color .25s ease;
}
.faq-item[open] .plus{transform:rotate(180deg);background:var(--c-accent);color:#fff;}
.faq-item .answer{
  padding:0 22px 20px;
  font-size:15.5px;line-height:1.9;color:var(--c-ink-2);
  border-top:1px solid var(--c-line);
  margin-top:0;padding-top:16px;
}

/* ============ CTA ============ */
.cta-band{background:var(--c-primary-soft);}
.cta-band .cta-inner{
  text-align:center;
  max-width:760px;
  margin:0 auto;
  padding:78px 0;
}
.cta-band h2{margin-bottom:14px;color:var(--c-primary-deep);}
.cta-band p{font-size:16px;line-height:1.9;margin-bottom:28px;color:var(--c-ink-2);}
.cta-band .cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  background:#0E3566;
  color:#C9D8EA;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.06) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:72px 72px;
  pointer-events:none;
}
.footer-inner{position:relative;z-index:2;padding:72px 0 28px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:36px;
  padding-bottom:36px;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;color:#fff;margin-bottom:14px;
}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:#A9C0DC;max-width:340px;}
.site-footer h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14.5px;color:#B7CBE4;}
.footer-links a:hover{color:#fff;}
.footer-form .field{margin-bottom:14px;}
.footer-form label{
  display:block;font-size:13px;color:#A9C0DC;margin-bottom:6px;
}
.footer-form .req{color:var(--c-accent);}
.footer-form input,.footer-form textarea{
  width:100%;min-height:44px;
  padding:10px 14px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);
  color:#fff;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.footer-form textarea{min-height:84px;resize:vertical;line-height:1.7;}
.footer-form input::placeholder,.footer-form textarea::placeholder{color:#8FA9C7;}
.footer-form input:focus,.footer-form textarea:focus{
  outline:none;
  border-color:#7FB2EC;
  background:rgba(255,255,255,.14);
  box-shadow:0 0 0 3px rgba(127,178,236,.28);
}
.footer-note{font-size:12.5px;color:#93AECA;margin-top:10px;line-height:1.7;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:#8FA9C7;
}

/* ============ 底部固定转化条 ============ */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:130;
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--c-line);
  box-shadow:var(--sh-3);
  padding-bottom:env(safe-area-inset-bottom);
  transform:translateY(0);
  transition:transform .3s ease,opacity .3s ease;
}
.sticky-bar.is-hidden{transform:translateY(120%);opacity:0;pointer-events:none;}
.sticky-inner{
  max-width:1200px;margin:0 auto;
  padding:12px 32px;
  display:flex;align-items:center;gap:20px;
}
.sticky-text{flex:1 1 auto;font-size:15px;color:var(--c-ink);line-height:1.5;}
.sticky-text strong{color:var(--c-primary-deep);font-weight:700;}
.sticky-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.sticky-close{
  width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-ink-3);
  transition:background-color .2s ease,color .2s ease;
}
.sticky-close:hover{background:var(--c-primary-soft);color:var(--c-primary);}

/* ============ 响应式 ============ */
@media screen and (max-width:1023px){
  .section{padding:64px 0;}
  .container{padding:0 24px;}
  .dock-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  .dock{gap:12px;}
  .dock-brand{font-size:15px;}
  .dock-actions .btn{display:none;}
  body{padding-top:104px;}
  .cat-hero-copy{padding:48px 0 8px;}
  .hero-figure{margin:8px 0 48px;aspect-ratio:16/9;}
  .cat-body{padding:48px 0 64px;}
  .anchor-nav{position:static;margin-bottom:20px;}
  .anchor-nav ul{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .anchor-nav a{padding:8px 14px;background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-pill);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .sticky-text{font-size:14px;}
}
@media screen and (max-width:639px){
  body{padding-top:96px;padding-bottom:120px;}
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .dock{height:56px;padding:0 14px;border-radius:20px;}
  .dock-brand{font-size:14px;}
  .brand-mark{width:30px;height:30px;}
  .cat-hero-copy{padding:36px 0 4px;}
  .cat-hero .sub{font-size:16px;}
  .cat-hero-actions{gap:10px;}
  .cat-hero-actions .btn{width:100%;}
  .panel{padding:24px 20px;}
  .mini-grid{grid-template-columns:1fr;}
  .step{padding-left:38px;}
  .faq-item summary{font-size:16px;padding:16px 16px;}
  .faq-item .answer{padding:14px 16px 18px;}
  .cta-band .cta-inner{padding:56px 0;}
  .cta-band .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-inner{padding:52px 0 22px;}
  .sticky-inner{padding:10px 20px;gap:12px;}
  .sticky-text{font-size:13px;}
  .sticky-actions .btn{padding:0 16px;}
}

/* roulang page: article */
:root{
  --c-primary:#1B5AA8;
  --c-primary-deep:#0E3566;
  --c-primary-soft:#E9F1FB;
  --c-primary-line:#C7DAF2;
  --c-accent:#E1763A;
  --c-accent-deep:#C25A22;
  --c-ink:#0F1E30;
  --c-ink-2:#3C5068;
  --c-ink-3:#7A8CA1;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --c-success:#1E8E6E;
  --c-warn:#C98A12;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,30,48,.05), 0 6px 18px rgba(15,30,48,.06);
  --sh-2:0 10px 30px rgba(15,30,48,.10);
  --sh-3:0 12px 40px rgba(14,53,102,.16);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  padding-top:96px;
  padding-bottom:92px;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--c-accent);}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;}
h1{font-size:clamp(28px,4.2vw,52px);line-height:1.25;}
h2{font-size:clamp(23px,2.6vw,34px);line-height:1.3;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
p{margin:0 0 16px;color:var(--c-ink-2);}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:none;
  box-shadow:0 0 0 2px rgba(27,90,168,.40);
  border-radius:var(--r-sm);
}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:64px 0;}
.section-head{margin-bottom:32px;}
.section-head .eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.04em;
  color:var(--c-primary);
  background:var(--c-primary-soft);
  border-radius:var(--r-pill);
  padding:5px 12px;
  margin-bottom:14px;
  font-weight:600;
}
.section-head h2{position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:.32em;
  width:4px;height:18px;
  border-radius:2px;
  background:var(--c-primary);
}
.section-head p{margin-top:12px;max-width:760px;font-size:15px;}
/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn:active{transform:scale(.98);}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 8px 18px rgba(225,118,58,.26);}
.btn-primary:hover{background:var(--c-accent-deep);color:#fff;transform:translateY(-1px);}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-primary-line);}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:var(--c-primary);}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0 4px;height:auto;}
.btn-ghost:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px;}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.6;cursor:not-allowed;transform:none;}
/* 徽章 */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  letter-spacing:.04em;
  padding:4px 11px;
  border-radius:var(--r-pill);
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-weight:600;
}
.badge-accent{background:#FDF0E8;color:var(--c-accent-deep);}
.badge-muted{background:#EEF2F8;color:var(--c-ink-3);}
/* 顶部 Dock */
.site-header{
  position:fixed;
  top:16px;left:0;right:0;
  z-index:80;
  display:flex;
  justify-content:center;
  pointer-events:none;
  transition:top .25s ease;
}
.dock{
  pointer-events:auto;
  width:min(1080px,calc(100% - 32px));
  height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:0 18px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.93);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-3);
  transition:height .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{top:10px;}
.site-header.is-scrolled .dock{height:56px;box-shadow:0 12px 32px rgba(14,53,102,.20);}
.dock-brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;color:var(--c-ink);flex-shrink:0;}
.dock-brand:hover{color:var(--c-primary-deep);}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-deep));
  color:#fff;
  flex-shrink:0;
}
.dock-nav{display:flex;align-items:center;gap:4px;}
.dock-nav a{
  padding:8px 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:500;
  color:var(--c-ink-2);
  white-space:nowrap;
}
.dock-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);}
.dock-nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary-deep);font-weight:600;}
.dock-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.dock-search{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:50%;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink-2);
  cursor:pointer;
  transition:all .2s ease;
}
.dock-search:hover{background:var(--c-primary-soft);color:var(--c-primary);border-color:var(--c-primary-line);}
.dock-toggle{
  display:none;
  width:40px;height:40px;
  border-radius:var(--r-sm);
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink);
  cursor:pointer;
  place-items:center;
}
.mobile-panel{
  position:fixed;
  inset:0;
  background:#fff;
  z-index:90;
  padding:88px 24px 32px;
  transform:translateY(-12px);
  opacity:0;
  visibility:hidden;
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
  overflow-y:auto;
}
.mobile-panel.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.mobile-panel a.m-link{
  display:block;
  padding:16px 4px;
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.mobile-panel a.m-link:hover{color:var(--c-primary);}
.mobile-panel .m-cta{margin-top:28px;}
.mobile-close{
  position:absolute;
  top:22px;right:20px;
  width:42px;height:42px;
  border-radius:50%;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink);
  cursor:pointer;
}
@media (max-width:1023px){
  .dock-nav{display:none;}
  .dock-toggle{display:grid;}
  .dock-actions .btn{display:none;}
}
@media (max-width:560px){
  .dock-brand span.brand-text{display:none;}
  .dock{height:56px;padding:0 14px;}
  .site-header.is-scrolled .dock{height:52px;}
}
/* 面包屑 */
.crumb-bar{background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%);border-bottom:1px solid var(--c-line);}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:10px;
  padding:18px 0;
  font-size:14px;
  color:var(--c-ink-3);
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--c-ink-3);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C6D2E0;}
.breadcrumb .current{
  color:var(--c-primary);
  font-weight:600;
  max-width:420px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
/* 文章头 */
.article-hero{
  position:relative;
  padding:44px 0 36px;
  overflow:hidden;
}
.article-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(27,90,168,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(27,90,168,.06) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.55;
  pointer-events:none;
}
.article-hero .hero-inner{position:relative;z-index:1;max-width:880px;}
.article-hero h1{margin:16px 0 18px;max-width:880px;}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 14px;
  font-size:14px;
  color:var(--c-ink-3);
}
.article-meta .dot{color:#C6D2E0;}
.article-meta .num{font-variant-numeric:tabular-nums;font-family:Inter,system-ui,sans-serif;}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
/* 布局 */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 340px;
  gap:48px;
  align-items:start;
  padding:8px 0 24px;
}
.article-main{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:36px 40px 40px;
  min-width:0;
}
/* 正文排版 */
.article-body{font-size:16.5px;line-height:1.9;color:#22334A;word-wrap:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;color:#22334A;}
.article-body h2{
  font-size:clamp(21px,2.2vw,27px);
  line-height:1.4;
  margin:42px 0 16px;
  padding-left:16px;
  position:relative;
  color:var(--c-ink);
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;top:.34em;
  width:4px;height:18px;
  border-radius:2px;
  background:var(--c-primary);
}
.article-body h3{font-size:19px;font-weight:700;margin:30px 0 12px;color:var(--c-ink);}
.article-body h4{font-size:17px;font-weight:600;margin:22px 0 10px;color:var(--c-ink);}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.35em;}
.article-body ul li{list-style:disc;margin-bottom:8px;}
.article-body ol li{list-style:decimal;margin-bottom:8px;}
.article-body ul li::marker{color:var(--c-primary);}
.article-body ol li::marker{color:var(--c-primary);font-weight:700;}
.article-body img{border-radius:var(--r-md);margin:26px auto;box-shadow:var(--sh-1);}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:10px;}
.article-body blockquote{
  margin:26px 0;
  padding:18px 22px;
  background:var(--c-primary-soft);
  border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--c-ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-accent);}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:26px 0;
  font-size:15px;
  display:block;
  overflow-x:auto;
}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:11px 14px;text-align:left;}
.article-body thead th{background:var(--c-primary-soft);color:var(--c-primary-deep);font-weight:600;}
.article-body tbody tr:nth-child(even){background:#FAFCFF;}
.article-body hr{border:none;border-top:1px solid var(--c-line);margin:34px 0;}
.article-body code{
  background:#EEF2F8;
  border-radius:6px;
  padding:2px 6px;
  font-size:14px;
  color:var(--c-primary-deep);
}
/* 空态 */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:16px;
  min-height:280px;
  padding:48px 24px;
  text-align:center;
  border:1px dashed var(--c-primary-line);
  border-radius:var(--r-md);
  background:#FBFDFF;
}
.empty-state .icon{
  width:56px;height:56px;
  display:grid;place-items:center;
  border-radius:50%;
  background:var(--c-primary-soft);
  color:var(--c-primary);
}
.empty-state p{margin:0;font-size:15px;color:var(--c-ink-2);}
/* 移动端目录 */
.mobile-toc{
  display:none;
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  background:#fff;
  padding:14px 18px;
  margin-bottom:22px;
}
.mobile-toc summary{
  cursor:pointer;
  font-size:15px;
  font-weight:600;
  color:var(--c-ink);
  list-style:none;
}
.mobile-toc summary::-webkit-details-marker{display:none;}
.mobile-toc summary::after{content:"＋";float:right;color:var(--c-primary);font-weight:600;}
.mobile-toc[open] summary::after{content:"－";}
/* 目录 */
.toc-list{margin-top:12px;display:flex;flex-direction:column;}
.toc-list a{
  display:block;
  font-size:14px;
  line-height:1.6;
  padding:7px 0 7px 12px;
  border-left:2px solid var(--c-line);
  color:var(--c-ink-2);
}
.toc-list a:hover{border-left-color:var(--c-primary);color:var(--c-primary-deep);background:#F8FBFF;}
.toc-list a.is-current{border-left-color:var(--c-primary);color:var(--c-primary-deep);font-weight:600;}
/* 侧栏 */
.article-side{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  padding:22px;
}
.side-card h4{
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:8px;
  color:var(--c-ink);
}
.side-card h4 .tick{width:4px;height:16px;border-radius:2px;background:var(--c-primary);display:inline-block;}
.side-links{display:flex;flex-direction:column;gap:10px;}
.side-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:14.5px;
  color:var(--c-ink-2);
  padding:11px 14px;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  background:#fff;
  transition:all .2s ease;
}
.side-links a:hover{
  border-color:var(--c-primary-line);
  background:var(--c-primary-soft);
  color:var(--c-primary-deep);
  transform:translateY(-2px);
}
.side-cta{
  background:linear-gradient(160deg,var(--c-primary-soft),#FFFFFF 70%);
  border:1px solid var(--c-primary-line);
}
.side-cta p{font-size:14px;margin-bottom:16px;}
/* 文末 */
.article-foot{
  margin-top:36px;
  padding-top:28px;
  border-top:1px solid var(--c-line);
}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:24px;}
.tag-row .label{font-size:13px;color:var(--c-ink-3);}
.chip{
  display:inline-flex;
  align-items:center;
  font-size:12px;
  letter-spacing:.04em;
  padding:6px 14px;
  border-radius:var(--r-pill);
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-weight:600;
}
.chip:hover{background:var(--c-primary);color:#fff;}
.foot-nav{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px;
  margin-bottom:26px;
}
.foot-nav a{
  display:block;
  padding:18px 20px;
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  background:#fff;
  transition:all .2s ease;
}
.foot-nav a:hover{border-color:var(--c-primary-line);box-shadow:var(--sh-2);transform:translateY(-2px);}
.foot-nav .k{display:block;font-size:12px;color:var(--c-ink-3);letter-spacing:.04em;margin-bottom:8px;}
.foot-nav .v{
  display:block;
  font-size:15.5px;
  font-weight:600;
  color:var(--c-ink);
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.foot-nav a:hover .v{color:var(--c-primary-deep);}
/* 推荐卡片 */
.rec-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--c-primary-line);}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,#DCE8F8,#F2F6FC);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-cover img{transform:scale(1.03);}
.card-cover .badge{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.94);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{
  font-size:17px;
  line-height:1.5;
  font-weight:600;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card:hover .card-body h3{color:var(--c-primary-deep);}
.card-body p{
  font-size:14px;
  line-height:1.7;
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-meta{
  margin-top:auto;
  font-size:13px;
  color:var(--c-ink-3);
  font-variant-numeric:tabular-nums;
  display:flex;
  align-items:center;
  gap:8px;
}
/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  padding:4px 22px;
  transition:border-color .2s ease;
}
.faq-item[open]{border-color:var(--c-primary-line);}
.faq-item summary{
  cursor:pointer;
  list-style:none;
  font-size:17px;
  font-weight:600;
  color:var(--c-ink);
  padding:18px 30px 18px 0;
  position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  position:absolute;
  right:2px;top:50%;
  transform:translateY(-50%);
  font-size:20px;
  font-weight:600;
  color:var(--c-primary);
  transition:transform .22s ease;
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(180deg);}
.faq-item .faq-answer{padding:0 0 20px;font-size:15px;color:var(--c-ink-2);border-top:1px solid var(--c-line);padding-top:16px;}
.faq-item .faq-answer p:last-child{margin-bottom:0;}
/* CTA */
.cta-band{
  background:var(--c-primary-soft);
  border:1px solid var(--c-primary-line);
  border-radius:var(--r-lg);
  padding:56px 40px;
  text-align:center;
}
.cta-band h2{margin-bottom:14px;}
.cta-band p{max-width:640px;margin:0 auto 26px;font-size:15.5px;}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}
/* 页脚 */
.site-footer{
  background:#fff;
  border-top:1px solid var(--c-line);
  margin-top:64px;
  position:relative;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(27,90,168,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(27,90,168,.06) 1px,transparent 1px);
  background-size:52px 52px;
  opacity:.5;
  pointer-events:none;
}
.footer-inner{position:relative;z-index:1;padding:58px 32px 26px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:36px;
  padding-bottom:36px;
  border-bottom:1px solid var(--c-line);
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--c-ink);margin-bottom:14px;}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:10px;}
.footer-desc{font-size:14px;line-height:1.8;color:var(--c-ink-2);margin:0;}
.footer h4,.footer-grid h4{font-size:15px;margin-bottom:16px;color:var(--c-ink);}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:var(--c-ink-2);}
.footer-links a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.footer-form .field{margin-bottom:12px;}
.footer-form label{display:block;font-size:13px;color:var(--c-ink-2);margin-bottom:6px;font-weight:500;}
.footer-form .req{color:var(--c-accent);}
.footer-form input,.footer-form textarea{
  width:100%;
  height:44px;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  padding:0 14px;
  font-size:14px;
  font-family:inherit;
  color:var(--c-ink);
  background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.footer-form textarea{height:82px;padding:12px 14px;resize:vertical;line-height:1.6;}
.footer-form input:focus,.footer-form textarea:focus{
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(27,90,168,.16);
  outline:none;
}
.footer-form input::placeholder,.footer-form textarea::placeholder{color:#A9B6C6;}
.footer-form .btn{margin-top:6px;}
.footer-note{font-size:12.5px;color:var(--c-ink-3);margin:10px 0 0;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:22px;
  font-size:13px;
  color:var(--c-ink-3);
}
/* 底部固定条 */
.sticky-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:75;
  background:rgba(255,255,255,.97);
  border-top:1px solid var(--c-line);
  box-shadow:var(--sh-3);
  padding-bottom:env(safe-area-inset-bottom);
  transform:translateY(0);
  transition:transform .25s ease;
}
.sticky-cta.is-hidden{transform:translateY(120%);}
.sticky-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:10px 32px;
  min-height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.sticky-text{font-size:15px;font-weight:600;color:var(--c-ink);margin:0;}
.sticky-actions{display:flex;align-items:center;gap:12px;}
.sticky-close{
  width:32px;height:32px;
  border-radius:50%;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink-3);
  cursor:pointer;
  line-height:1;
  font-size:16px;
  display:grid;
  place-items:center;
  transition:all .2s ease;
}
.sticky-close:hover{color:var(--c-ink);background:#F2F6FC;}
/* 响应式 */
@media (max-width:1023px){
  body{padding-top:88px;}
  .container{padding:0 24px;}
  .section{padding:56px 0;}
  .article-layout{grid-template-columns:1fr;gap:26px;}
  .article-side{display:none;}
  .article-main{padding:28px 26px 32px;}
  .mobile-toc{display:block;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-inner{padding:48px 24px 24px;}
  .cta-band{padding:44px 26px;}
  .sticky-inner{padding:10px 24px;}
}
@media (max-width:640px){
  body{padding-bottom:84px;}
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .article-hero{padding:30px 0 24px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{margin:34px 0 14px;}
  .rec-grid{grid-template-columns:1fr;}
  .foot-nav{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .breadcrumb .current{max-width:200px;}
  .cta-actions .btn{width:100%;}
  .sticky-text{font-size:13.5px;}
  .sticky-inner{padding:8px 20px;min-height:60px;}
  .sticky-actions .btn{height:40px;padding:0 16px;font-size:14px;}
  .sticky-close{width:28px;height:28px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#1B5AA8;
  --c-primary-deep:#0E3566;
  --c-primary-soft:#E9F1FB;
  --c-primary-line:#C7DAF2;
  --c-accent:#E1763A;
  --c-accent-deep:#C25A22;
  --c-ink:#0F1E30;
  --c-ink-2:#3C5068;
  --c-ink-3:#7A8CA1;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --c-success:#1E8E6E;
  --c-warn:#C98A12;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,30,48,.05),0 6px 18px rgba(15,30,48,.06);
  --sh-2:0 10px 30px rgba(15,30,48,.10);
  --sh-3:0 12px 40px rgba(14,53,102,.16);
  --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","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-ink);
  background:var(--c-bg);
  padding-bottom:calc(76px + env(safe-area-inset-bottom));
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible,details:focus-visible{
  outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;
}
ul,ol{margin:0 0 16px;padding-left:0;list-style:none}
p{margin:0 0 16px;line-height:1.85}
h1,h2,h3,h4{margin:0 0 16px;color:var(--c-ink);font-weight:700;letter-spacing:-0.01em}
h1{font-size:clamp(28px,4.2vw,50px);line-height:1.25}
h2{font-size:clamp(23px,2.6vw,34px);line-height:1.3}
h3{font-size:22px;line-height:1.4;font-weight:600}
h4{font-size:18px;line-height:1.5;font-weight:600}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
[hidden]{display:none !important}

.container{max-width:var(--container);margin:0 auto;padding:0 32px;width:100%}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.bg-soft{background:var(--c-bg)}
.bg-white{background:var(--c-surface)}
.texture{
  background-image:
    linear-gradient(rgba(27,90,168,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(27,90,168,.055) 1px,transparent 1px);
  background-size:52px 52px;
}
.sec-title{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.sec-title::before{content:"";flex:0 0 4px;height:1.05em;background:var(--c-primary);border-radius:2px}
.sec-lead{max-width:760px;color:var(--c-ink-2);font-size:16px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.04em;line-height:1.4;
  color:var(--c-primary);background:var(--c-primary-soft);
  border:1px solid var(--c-primary-line);
  padding:5px 12px;border-radius:var(--r-pill);margin-bottom:18px;
}

/* ============ 浮动 Dock 导航 ============ */
.site-header{position:fixed;top:0;left:0;right:0;z-index:90;padding:16px 20px 0;pointer-events:none;transition:padding .25s ease}
.site-header.is-scrolled{padding-top:10px}
.dock{
  pointer-events:auto;
  max-width:1080px;margin:0 auto;height:64px;
  display:flex;align-items:center;gap:18px;
  padding:0 20px;
  background:rgba(255,255,255,.9);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-3);
  transition:height .25s ease,box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled .dock{height:56px;box-shadow:0 10px 28px rgba(14,53,102,.14)}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary);color:#fff;flex:0 0 auto;
}
.brand-text{font-size:16px;font-weight:700;color:var(--c-ink);letter-spacing:-0.01em;white-space:nowrap}
.brand:hover .brand-text{color:var(--c-primary-deep)}
.dock-nav{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto}
.dock-nav a{
  display:inline-block;padding:8px 14px;border-radius:var(--r-pill);
  font-size:15px;color:var(--c-ink-2);text-decoration:none;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease;
}
.dock-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);text-decoration:none}
.dock-nav a.is-active{
  background:var(--c-primary-soft);color:var(--c-primary-deep);font-weight:600;
  box-shadow:inset 0 -2px 0 var(--c-primary);
}
.dock-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:auto}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-ink-2);
  cursor:pointer;transition:all .2s ease;
}
.icon-btn:hover{color:var(--c-primary);border-color:var(--c-primary-line);background:var(--c-primary-soft)}
.icon-btn:active{transform:scale(.98)}
.menu-toggle{display:none}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .2s ease,background .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(225,118,58,.28)}
.btn-primary:hover{background:var(--c-accent-deep);color:#fff;box-shadow:0 10px 22px rgba(194,90,34,.3)}
.btn-outline{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary-line)}
.btn-outline:hover{background:var(--c-primary-soft);color:var(--c-primary-deep);border-color:var(--c-primary)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%;display:flex}
.btn[disabled],.btn.is-disabled{opacity:.6;cursor:not-allowed;transform:none}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--c-primary);
  text-decoration:none;border-bottom:1px solid transparent;
  padding-bottom:2px;transition:all .2s ease;
}
.link-more:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);text-decoration:none}

/* ============ 面包屑 ============ */
.breadcrumb-wrap{padding-top:112px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-3);padding:0 0 18px}
.breadcrumb a{color:var(--c-ink-3);text-decoration:none}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:none}
.breadcrumb .sep{color:var(--c-primary-line)}
.breadcrumb .current{color:var(--c-primary);font-weight:600}

/* ============ 头图 Hero ============ */
.hero-media{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:16/6;min-height:340px;
  box-shadow:var(--sh-2);background:#DCE8F7;
}
.hero-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(246,248,252,.97) 0%,rgba(246,248,252,.9) 40%,rgba(246,248,252,.34) 78%,rgba(246,248,252,.1) 100%);
}
.hero-content{
  position:absolute;inset:0;z-index:2;
  display:flex;flex-direction:column;justify-content:center;
  padding:0 56px;max-width:700px;
}
.hero-content h1{margin-bottom:14px}
.hero-content .hero-lead{font-size:17px;line-height:1.8;color:var(--c-ink-2);margin:0;max-width:560px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.04em;line-height:1.4;
  padding:6px 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.9);color:var(--c-primary-deep);
  border:1px solid var(--c-primary-line);
}

/* ============ 错落引导卡 ============ */
.guide-grid{display:grid;grid-template-columns:1.62fr 1fr;gap:24px;align-items:start}
.guide-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.guide-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.guide-card .thumb{position:relative;overflow:hidden;background:linear-gradient(135deg,#DCE8F7,#EAF1FA)}
.guide-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease}
.guide-card:hover .thumb img{transform:scale(1.03)}
.guide-card .body{padding:26px 28px 28px}
.guide-card .body h3{margin-bottom:10px}
.guide-card .body p{color:var(--c-ink-2);font-size:15.5px}
.guide-card.is-small .thumb img{aspect-ratio:4/3}
.guide-card.is-small .body{padding:22px 24px 24px}
.point-list{display:grid;gap:10px;margin:18px 0 22px}
.point-list li{position:relative;padding-left:18px;color:var(--c-ink-2);font-size:15.5px}
.point-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:7px;height:7px;border-radius:50%;background:var(--c-primary);
}

/* ============ 时间线 ============ */
.timeline{position:relative;padding-left:40px;margin-top:12px}
.timeline::before{
  content:"";position:absolute;left:11px;top:10px;bottom:10px;width:2px;
  background:linear-gradient(180deg,var(--c-primary) 0%,var(--c-primary-line) 100%);
  border-radius:2px;
}
.timeline-item{position:relative;padding-bottom:38px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:"";position:absolute;left:-35px;top:6px;
  width:14px;height:14px;border-radius:50%;
  background:var(--c-surface);border:3px solid var(--c-primary);
  box-shadow:0 0 0 4px rgba(27,90,168,.08);
}
.timeline-item h3{margin-bottom:8px;font-size:19px}
.timeline-item p{color:var(--c-ink-2);font-size:15.5px;margin-bottom:0;max-width:820px}
.timeline-item .step-tag{
  display:inline-block;font-size:12px;letter-spacing:.04em;color:var(--c-accent);
  font-weight:700;margin-bottom:6px;
}
.timeline-figure{
  margin-top:16px;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--c-line);max-width:520px;
}
.timeline-figure img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ============ 业务条线卡片 ============ */
.line-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.line-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease;
}
.line-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.line-card .thumb{overflow:hidden;background:linear-gradient(135deg,#E4EEFA,#F2F6FC)}
.line-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s ease}
.line-card:hover .thumb img{transform:scale(1.03)}
.line-card .body{padding:24px;display:flex;flex-direction:column;flex:1 1 auto}
.line-card .badge{
  display:inline-flex;align-self:flex-start;
  font-size:12px;letter-spacing:.04em;line-height:1.4;
  padding:5px 11px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary-deep);margin-bottom:14px;
}
.line-card h3{font-size:19px;margin-bottom:10px}
.line-card p{color:var(--c-ink-2);font-size:15px;margin-bottom:18px}
.line-card .card-foot{margin-top:auto}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);box-shadow:var(--sh-1);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--c-primary-line)}
.faq-item[open]{box-shadow:var(--sh-2);border-color:var(--c-primary-line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;color:var(--c-ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-soft);color:var(--c-primary);
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-item[open] summary .plus{transform:rotate(180deg);background:var(--c-primary);color:#fff}
.faq-item .answer{padding:0 24px 22px;color:var(--c-ink-2);font-size:15.5px;line-height:1.8}
.faq-item .answer p:last-child{margin-bottom:0}

/* ============ CTA ============ */
.cta-band{
  background:var(--c-primary-soft);
  border:1px solid var(--c-primary-line);
  border-radius:var(--r-lg);
  padding:72px 32px;text-align:center;
}
.cta-band h2{margin-bottom:14px}
.cta-band p{color:var(--c-ink-2);max-width:640px;margin:0 auto 30px}
.cta-band .btn-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-surface);border-top:1px solid var(--c-line);margin-top:96px;position:relative}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(27,90,168,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(27,90,168,.05) 1px,transparent 1px);
  background-size:52px 52px;
}
.footer-inner{position:relative;z-index:2;padding-top:72px;padding-bottom:28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--c-ink);margin-bottom:16px}
.footer-brand .brand-mark{width:32px;height:32px;border-radius:10px;background:var(--c-primary);color:#fff;display:inline-flex;align-items:center;justify-content:center}
.footer-desc{color:var(--c-ink-3);font-size:14px;line-height:1.8;margin:0}
.site-footer h4{font-size:15px;margin-bottom:18px;color:var(--c-ink)}
.footer-links{display:grid;gap:12px}
.footer-links a{color:var(--c-ink-2);font-size:14.5px;text-decoration:none}
.footer-links a:hover{color:var(--c-primary);text-decoration:none}
.footer-form{display:grid;gap:14px}
.field{display:grid;gap:7px}
.field label{font-size:14px;color:var(--c-ink-2);font-weight:600}
.field .req{color:var(--c-accent)}
.field input,.field textarea{
  width:100%;height:44px;padding:0 14px;
  font-size:14.5px;font-family:inherit;color:var(--c-ink);
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-sm);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:84px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#A9B7C6}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 2px rgba(27,90,168,.16);
}
.footer-note{font-size:13px;color:var(--c-ink-3);margin:0}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--c-ink-3);
}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:rgba(255,255,255,.97);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-top:1px solid var(--c-line);
  box-shadow:var(--sh-3);
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-inner{
  max-width:var(--container);margin:0 auto;height:64px;
  padding:0 32px;display:flex;align-items:center;gap:16px;
}
.sticky-text{font-size:15px;color:var(--c-ink-2);display:flex;align-items:center;gap:10px}
.sticky-text .dot{width:8px;height:8px;border-radius:50%;background:var(--c-accent);flex:0 0 auto}
.sticky-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.sticky-close{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-ink-3);cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;transition:all .2s ease;
}
.sticky-close:hover{color:var(--c-primary);border-color:var(--c-primary-line);background:var(--c-primary-soft)}

/* ============ 移动端全屏菜单 ============ */
.mobile-panel{
  position:fixed;inset:0;z-index:95;background:var(--c-surface);
  padding:96px 24px 32px;overflow-y:auto;
}
.mobile-nav{display:grid;margin-bottom:24px}
.mobile-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;border-bottom:1px solid var(--c-line);
  color:var(--c-ink);font-size:16px;text-decoration:none;
}
.mobile-nav a.is-active{color:var(--c-primary);font-weight:700}
.mobile-nav a:hover{color:var(--c-primary);text-decoration:none}
.mobile-close{
  position:absolute;top:22px;right:20px;width:42px;height:42px;border-radius:50%;
  border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-ink-2);
  cursor:pointer;display:inline-flex;align-items:center;justify-content:center;
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .section-tight{padding:48px 0}
  .dock-nav{display:none}
  .menu-toggle{display:inline-flex}
  .dock-actions .btn-primary{display:none}
  .breadcrumb-wrap{padding-top:96px}
  .hero-media{aspect-ratio:auto;min-height:420px}
  .hero-content{padding:0 32px;max-width:100%}
  .guide-grid{grid-template-columns:1fr}
  .line-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{margin-top:64px}
  .sticky-inner{padding:0 24px}
}
@media (max-width:639px){
  body{padding-bottom:calc(70px + env(safe-area-inset-bottom))}
  .container{padding:0 20px}
  .section{padding:48px 0}
  .section-tight{padding:40px 0}
  .dock{height:56px;padding:0 14px;gap:10px}
  .brand-text{font-size:15px}
  .brand-mark{width:30px;height:30px;border-radius:10px}
  .breadcrumb-wrap{padding-top:88px}
  .breadcrumb{font-size:13px}
  .hero-media{min-height:440px;border-radius:var(--r-md)}
  .hero-content{padding:0 20px}
  .hero-content .hero-lead{font-size:15.5px}
  .hero-badges{gap:8px;margin-top:18px}
  .guide-grid{gap:18px}
  .guide-card .body{padding:20px}
  .line-grid{grid-template-columns:1fr;gap:18px}
  .timeline{padding-left:28px}
  .timeline::before{left:9px}
  .timeline-item{padding-bottom:30px}
  .timeline-item::before{left:-25px;width:12px;height:12px;border-width:2px;top:7px}
  .cta-band{padding:48px 20px;border-radius:var(--r-md)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-inner{padding-top:52px}
  .footer-bottom{flex-direction:column;gap:6px;font-size:12.5px}
  .sticky-inner{height:60px;padding:0 16px;gap:10px}
  .sticky-text{font-size:13.5px;line-height:1.4}
  .sticky-text .dot{width:6px;height:6px}
  .sticky-actions .btn{height:40px;padding:0 16px;font-size:14px}
  .faq-item summary{padding:16px 18px;font-size:16px}
  .faq-item .answer{padding:0 18px 18px;font-size:15px}
}