/* roulang page: index */
:root{
  --c-primary:#1D4B7C;
  --c-primary-dark:#163C63;
  --c-primary-50:#EEF3F9;
  --c-primary-100:#DCE7F3;
  --c-accent:#E4572B;
  --c-accent-dark:#C8461F;
  --c-teal:#0E8F84;
  --c-ink:#12233D;
  --c-bg:#F7F8FA;
  --c-card:#FFFFFF;
  --c-line:#E2E8F0;
  --c-line-soft:#E9EEF4;
  --c-text:#16202E;
  --c-text-2:#48586B;
  --c-text-3:#8695A8;
  --c-invert:#E8EEF6;
  --r-card:16px;
  --r-btn:10px;
  --r-img:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 2px 4px rgba(18,35,61,.04), 0 12px 28px -14px rgba(18,35,61,.14);
  --sh-2:0 4px 8px rgba(18,35,61,.06), 0 18px 36px -16px rgba(18,35,61,.2);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-accent)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--c-text);letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(228,87,43,.35);border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.section{padding:96px 0}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost,.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
  line-height:1.2;border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-brand{background:var(--c-primary);color:#fff}
.btn-brand:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px -14px rgba(29,75,124,.75)}
.btn-ghost{background:#fff;border:1.5px solid var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-dark);border-color:var(--c-primary-dark);transform:translateY(-1px)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px -14px rgba(228,87,43,.8)}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--c-primary);transition:gap .2s var(--ease),color .2s var(--ease)}
.link-arrow:hover{color:var(--c-accent);gap:12px}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--c-line);transition:box-shadow .25s var(--ease)}
.site-header.is-scrolled{box-shadow:0 8px 26px -16px rgba(18,35,61,.45)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
.logo{display:flex;align-items:center;gap:12px;color:var(--c-text)}
.logo:hover{color:var(--c-text)}
.logo-mark{width:38px;height:38px;border-radius:10px;background:var(--c-primary);color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;flex:0 0 38px}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:17px;font-weight:700;letter-spacing:.01em}
.logo-text em{font-style:normal;font-size:11px;color:var(--c-text-3);letter-spacing:.16em;margin-top:2px}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-menu .nav-link{position:relative;display:inline-flex;align-items:center;padding:8px 14px;border-radius:var(--r-pill);font-size:15px;font-weight:500;color:var(--c-text);transition:color .2s var(--ease),background .2s var(--ease)}
.nav-menu .nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--c-accent);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease)}
.nav-menu .nav-link:hover{color:var(--c-primary)}
.nav-menu .nav-link:hover::after{transform:scaleX(1)}
.nav-menu .nav-link.is-active{color:var(--c-primary);background:var(--c-primary-50);font-weight:600}
.nav-menu .nav-link.is-active::after{display:none}
.nav-menu .nav-cta{margin-left:12px;padding:11px 20px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--c-line);background:#fff;border-radius:10px;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;padding:0}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{background:#F4F7FB;border-bottom:1px solid var(--c-line);padding:72px 0 80px}
.hero-grid{display:grid;grid-template-columns:56fr 44fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-pill);font-size:12.5px;font-weight:600;color:var(--c-primary);letter-spacing:.02em}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 3px rgba(228,87,43,.15)}
.hero h1{margin-top:20px;font-size:clamp(30px,4.4vw,52px);line-height:1.18;font-weight:700;letter-spacing:-.01em}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--c-text-2);max-width:540px}
.hero-actions{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.hero-metrics{margin-top:40px;padding-top:28px;border-top:1px solid var(--c-line);display:flex;gap:36px;flex-wrap:wrap}
.hero-metrics li{display:flex;flex-direction:column;gap:2px}
.num{font-size:26px;font-weight:700;line-height:1.1;color:var(--c-text);font-variant-numeric:tabular-nums}
.num em{font-style:normal;font-size:15px;font-weight:700;color:var(--c-accent);margin-left:2px}
.lbl{font-size:12.5px;color:var(--c-text-3)}
.hero-media{position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-2)}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(29,75,124,.34),rgba(29,75,124,0) 58%);pointer-events:none}

/* ---------- 板块标题 ---------- */
.section-head{max-width:760px;margin-bottom:48px}
.section-head h2{font-size:clamp(24px,2.6vw,36px);line-height:1.3}
.section-head p{margin-top:14px;font-size:16px;color:var(--c-text-2)}
.row-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none}
.row-head .link-arrow{white-space:nowrap;padding-bottom:6px}

/* ---------- 痛点区 ---------- */
.section-pain{background:#fff}
.pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.pain-card{position:relative;background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);overflow:hidden;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.pain-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.pain-num{position:absolute;top:10px;right:20px;font-size:56px;line-height:1;font-weight:700;color:rgba(29,75,124,.07);font-variant-numeric:tabular-nums}
.pain-card h3{font-size:19px;line-height:1.5;padding-right:56px}
.pain-card p{margin-top:10px;font-size:15px;line-height:1.85;color:var(--c-text-2)}

/* ---------- 能力矩阵 ---------- */
.section-solution{background:var(--c-bg)}
.sol-grid{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start}
.sol-side{position:sticky;top:104px}
.sol-side h2{font-size:clamp(24px,2.6vw,34px);line-height:1.32}
.sol-side p{margin-top:16px;font-size:15px;line-height:1.9;color:var(--c-text-2)}
.sol-side .link-arrow{margin-top:22px}
.sol-cards{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.sol-card{display:flex;flex-direction:column;gap:12px;background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.sol-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.sol-card-wide{grid-column:1 / -1;background:#FBFDFF;border-color:var(--c-primary-100)}
.sol-icon{width:44px;height:44px;border-radius:var(--r-sm);background:var(--c-primary-50);color:var(--c-primary);display:grid;place-items:center}
.sol-icon svg{width:22px;height:22px}
.sol-card h3{font-size:19px;line-height:1.5}
.sol-card p{font-size:15px;line-height:1.85;color:var(--c-text-2)}
.sol-card .link-arrow{margin-top:auto;font-size:14px}

/* ---------- 数据条带 ---------- */
.stats-band{background:var(--c-ink);padding:64px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.stat-num{display:block;font-size:clamp(40px,4vw,52px);font-weight:700;line-height:1.05;color:#fff;font-variant-numeric:tabular-nums}
.stat-num em{font-style:normal;font-size:.48em;font-weight:700;color:var(--c-accent);margin-left:4px}
.stat-lbl{display:block;margin-top:10px;font-size:12.5px;line-height:1.6;color:#9FB1C7}

/* ---------- 证言 ---------- */
.section-quotes{background:#fff}
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.quote-card{position:relative;background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1);margin:0;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.quote-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.quote-card::after{content:"”";position:absolute;top:6px;right:22px;font-family:Georgia,"Times New Roman",serif;font-size:58px;line-height:1;color:rgba(228,87,43,.16)}
.quote-card blockquote{margin:0;font-size:18px;line-height:1.8;color:var(--c-text)}
.quote-author{display:flex;align-items:center;gap:12px;margin-top:22px;padding-top:20px;border-top:1px solid var(--c-line-soft)}
.avatar{width:48px;height:48px;border-radius:50%;background:var(--c-primary-50);color:var(--c-primary);display:grid;place-items:center;font-size:16px;font-weight:700;flex:0 0 48px}
.quote-name{display:block;font-size:14px;font-weight:600}
.quote-role{display:block;font-size:12.5px;color:var(--c-text-3)}

/* ---------- 最新资讯 ---------- */
.section-latest{background:var(--c-bg)}
.latest-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:32px;align-items:start}
.latest-feature{display:block;background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);color:inherit;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.latest-feature:hover{transform:translateY(-2px);box-shadow:var(--sh-2);color:inherit}
.latest-feature-media{overflow:hidden}
.latest-feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s var(--ease)}
.latest-feature:hover .latest-feature-media img{transform:scale(1.03)}
.latest-feature-body{padding:24px}
.latest-feature-body h3{margin-top:12px;font-size:22px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s var(--ease)}
.latest-feature:hover .latest-feature-body h3{color:var(--c-primary)}
.latest-feature-body p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta-line{margin-top:18px;display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--c-text-3)}
.badge-soft{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--r-pill);background:var(--c-primary-50);color:var(--c-primary);font-size:12.5px;font-weight:600;line-height:1.5}
.badge-soft::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.latest-list{display:flex;flex-direction:column;gap:16px}
.latest-item{display:flex;gap:16px;background:#fff;border:1px solid var(--c-line-soft);border-radius:14px;padding:16px;box-shadow:var(--sh-1);color:inherit;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.latest-item:hover{transform:translateY(-2px);box-shadow:var(--sh-2);color:inherit}
.latest-item-thumb{flex:0 0 96px;width:96px;height:72px;border-radius:var(--r-sm);overflow:hidden}
.latest-item-thumb img{width:100%;height:100%;object-fit:cover}
.latest-item-body{min-width:0;flex:1}
.latest-item-body h3{font-size:16px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s var(--ease)}
.latest-item:hover .latest-item-body h3{color:var(--c-primary)}
.latest-item-body p{margin-top:6px;font-size:13px;line-height:1.7;color:var(--c-text-3);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.latest-item-meta{margin-top:10px;display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--c-text-3);flex-wrap:wrap}
.dot-sep{color:#C3CDDA}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;min-height:200px;background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-card);padding:32px;text-align:center}
.empty-state svg{width:40px;height:40px;color:#B7C3D2}
.empty-state p{font-size:15px;color:var(--c-text-2)}
.empty-state .btn-ghost{padding:10px 20px;font-size:14px}

/* ---------- FAQ ---------- */
.section-faq{background:#fff}
.faq-wrap{max-width:900px;margin:0 auto}
.accordion.faq-acc{}
.faq-acc .accordion-item{background:#fff;border:1px solid var(--c-line);border-radius:14px;margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);transition:box-shadow .2s var(--ease),border-color .2s var(--ease)}
.faq-acc .accordion-item:hover{box-shadow:var(--sh-2);border-color:var(--c-primary-100)}
.faq-acc .accordion-button{position:relative;display:block;width:100%;text-align:left;background:#fff;color:var(--c-text);font-size:16px;font-weight:600;line-height:1.6;padding:20px 60px 20px 24px;box-shadow:none;border-radius:14px}
.faq-acc .accordion-button:not(.collapsed){color:var(--c-primary);background:#fff;box-shadow:none}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent}
.faq-acc .accordion-button::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--c-accent);opacity:0;transition:opacity .2s var(--ease)}
.faq-acc .accordion-button:not(.collapsed)::before{opacity:1}
.faq-acc .accordion-button::after{display:none}
.faq-icon{position:absolute;right:24px;top:50%;width:16px;height:16px;transform:translateY(-50%)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform .25s var(--ease),opacity .25s var(--ease)}
.faq-icon::before{left:0;right:0;top:7px;height:2px}
.faq-icon::after{top:0;bottom:0;left:7px;width:2px}
.faq-acc .accordion-button:not(.collapsed) .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-acc .accordion-body{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--c-text-2)}

/* ---------- 终局 CTA ---------- */
.section-cta{background:var(--c-bg)}
.cta-panel{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;background:#fff;border:1px solid var(--c-primary-100);border-radius:var(--r-card);padding:48px;box-shadow:var(--sh-1)}
.cta-copy h2{font-size:clamp(24px,2.6vw,34px);line-height:1.32}
.cta-copy p{margin-top:14px;font-size:15px;line-height:1.9;color:var(--c-text-2);max-width:440px}
.cta-copy .btn-accent{margin-top:26px}
.cta-form{background:var(--c-primary-50);border-radius:14px;padding:26px}
.form-field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.form-field label{font-size:13px;font-weight:600;color:var(--c-text-2)}
.form-field input{height:44px;width:100%;border:1px solid #D9E0EA;border-radius:var(--r-btn);padding:0 14px;font-size:15px;font-family:inherit;color:var(--c-text);background:#fff;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.form-field input::placeholder{color:#9AA7B6}
.form-field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,75,124,.14)}
.cta-form .btn-brand{width:100%}
.form-note{margin-top:12px;font-size:12.5px;color:var(--c-text-3);line-height:1.7}
.form-tip{margin-top:10px;font-size:12.5px;color:var(--c-teal);min-height:18px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:var(--c-invert);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-logo{display:inline-block;font-size:19px;font-weight:700;color:#fff;letter-spacing:.01em}
.footer-logo:hover{color:#fff}
.footer-logo em{font-style:normal;font-size:11px;font-weight:600;color:#8FA6C2;letter-spacing:.16em;margin-left:8px;vertical-align:middle}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.9;color:#A9B9CD;max-width:320px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col li{margin-bottom:10px}
.footer-col a{display:inline-block;font-size:14px;color:#C7D2E0;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px)}
.footer-contact p{font-size:14px;line-height:1.9;color:#A9B9CD;margin-bottom:8px}
.footer-contact strong{color:#E8EEF6;font-weight:600}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;font-size:12.5px;color:#8FA6C2}

/* ---------- 动效 ---------- */
@media (prefers-reduced-motion: no-preference){
  .hero-copy,.hero-media{animation:fadeUp .3s var(--ease) both}
  .hero-media{animation-delay:.08s}
}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .sol-grid{grid-template-columns:300px 1fr;gap:40px}
  .hero-grid{gap:40px}
}
@media (max-width:992px){
  .section{padding:72px 0}
  .hero{padding:56px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{order:2}
  .sol-grid{grid-template-columns:1fr;gap:32px}
  .sol-side{position:static}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .latest-grid{grid-template-columns:1fr}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .quote-grid > *:nth-child(even){margin-top:24px}
}
@media (max-width:768px){
  .container{padding-left:18px;padding-right:18px}
  .section{padding:56px 0}
  .nav-toggle{display:flex}
  .nav-inner{height:64px;gap:12px}
  .nav-menu{position:fixed;top:64px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;padding:8px 18px 22px;background:#fff;border-bottom:1px solid var(--c-line);box-shadow:var(--sh-2);max-height:calc(100vh - 64px);overflow-y:auto}
  .nav-menu.is-open{display:flex}
  .nav-menu .nav-link{height:48px;padding:0 8px;border-radius:0;border-bottom:1px solid var(--c-line-soft);font-size:15px}
  .nav-menu .nav-link::after{display:none}
  .nav-menu .nav-link.is-active{background:transparent;color:var(--c-primary);font-weight:600}
  .nav-menu .nav-cta{margin:18px 0 0;width:100%;padding:13px 20px}
  .hero{padding:44px 0 56px}
  .hero h1{font-size:clamp(28px,6.6vw,38px)}
  .hero-sub{font-size:16px}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{flex:1 1 auto;justify-content:center}
  .hero-metrics{gap:24px;margin-top:32px}
  .pain-grid{grid-template-columns:1fr}
  .sol-cards{grid-template-columns:1fr}
  .sol-card-wide{grid-column:auto}
  .quote-grid{grid-template-columns:1fr}
  .quote-grid > *:nth-child(even){margin-top:0}
  .quote-card{padding:26px}
  .quote-card blockquote{font-size:16.5px}
  .stats-band{padding:48px 0}
  .stat-num{font-size:38px}
  .row-head{flex-direction:column;align-items:flex-start;gap:12px}
  .latest-feature-body{padding:20px}
  .latest-feature-body h3{font-size:19px}
  .latest-item{padding:14px;gap:14px}
  .latest-item-thumb{flex:0 0 84px;width:84px;height:64px}
  .cta-panel{padding:28px 22px}
  .cta-form{padding:20px}
  .faq-acc .accordion-button{font-size:15px;padding:18px 52px 18px 20px}
  .faq-acc .accordion-body{padding:0 20px 20px}
  .faq-icon{right:20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .hero-metrics{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%}
  .stats-grid{grid-template-columns:1fr 1fr;gap:26px 18px}
  .latest-item{flex-direction:column}
  .latest-item-thumb{flex:none;width:100%;height:140px}
  .pain-card{padding:22px}
  .pain-num{font-size:46px}
  .cta-copy h2{font-size:22px}
}

/* roulang page: article */
:root{
  --c-primary:#1D4B7C;
  --c-primary-hover:#163C63;
  --c-primary-light:#EEF3F9;
  --c-primary-light-2:#DCE7F3;
  --c-accent:#E4572B;
  --c-accent-hover:#C8461F;
  --c-teal:#0E8F84;
  --c-ink:#12233D;
  --c-bg:#F7F8FA;
  --c-card:#FFFFFF;
  --c-line:#E2E8F0;
  --c-line-soft:#E9EEF4;
  --c-text:#16202E;
  --c-text-2:#48586B;
  --c-text-3:#8695A8;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:16px;
  --radius-pill:999px;
  --shadow-sm:0 2px 4px rgba(18,35,61,.04),0 12px 28px -14px rgba(18,35,61,.14);
  --shadow-hover:0 4px 8px rgba(18,35,61,.06),0 18px 36px -16px rgba(18,35,61,.2);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);}
a:hover{color:var(--c-accent);}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0;}
h1,h2,h3,h4,h5,h6{margin:0;line-height:1.3;font-weight:700;color:var(--c-text);}
::selection{background:var(--c-primary-light-2);color:var(--c-ink);}

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

/* ============ 按钮 ============ */
.btn-brand,
.btn-ghost,
.btn-accent{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border-radius:var(--radius-btn);
  transition:all .2s var(--ease);
  white-space:nowrap;
}
.btn-brand{
  background:var(--c-primary);
  color:#fff;
  border:1.5px solid var(--c-primary);
}
.btn-brand:hover{
  background:var(--c-primary-hover);
  border-color:var(--c-primary-hover);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 24px -14px rgba(29,75,124,.7);
}
.btn-ghost{
  background:#fff;
  color:var(--c-primary);
  border:1.5px solid var(--c-primary);
}
.btn-ghost:hover{
  background:var(--c-primary-light);
  color:var(--c-primary-hover);
  transform:translateY(-1px);
}
.btn-accent{
  background:var(--c-accent);
  color:#fff;
  border:1.5px solid var(--c-accent);
}
.btn-accent:hover{
  background:var(--c-accent-hover);
  border-color:var(--c-accent-hover);
  color:#fff;
  transform:translateY(-1px);
}
.btn-brand:focus-visible,
.btn-ghost:focus-visible,
.btn-accent:focus-visible,
.nav-link:focus-visible,
.nav-toggle:focus-visible,
.footer-col a:focus-visible,
.related-card:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(228,87,43,.35);
}

/* ============ 导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{
  box-shadow:0 8px 24px -18px rgba(18,35,61,.45);
}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:76px;
  gap:24px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
  color:var(--c-text);
}
.logo:hover{color:var(--c-text);}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:11px;
  background:linear-gradient(145deg,var(--c-primary),#2B6399);
  color:#fff;
  font-size:20px;
  font-weight:700;
  letter-spacing:0;
  box-shadow:0 6px 14px -8px rgba(29,75,124,.8);
}
.logo-text{
  display:flex;
  flex-direction:column;
  line-height:1.15;
}
.logo-text strong{
  font-size:18px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--c-ink);
}
.logo-text em{
  font-style:normal;
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--c-text-3);
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:32px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 2px;
  font-size:15px;
  font-weight:500;
  color:var(--c-text-2);
  border-radius:var(--radius-pill);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-1px;
  width:0;
  height:2px;
  background:var(--c-accent);
  border-radius:2px;
  transform:translateX(-50%);
  transition:width .2s var(--ease);
}
.nav-link:hover{
  color:var(--c-primary);
}
.nav-link:hover::after{width:18px;}
.nav-link.is-active{
  background:var(--c-primary-light);
  color:var(--c-primary);
  padding:0 14px;
  font-weight:600;
}
.nav-link.is-active::after{display:none;}
.nav-cta{
  padding:10px 20px;
  font-size:14.5px;
}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;
  height:42px;
  padding:0 9px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:#fff;
}
.nav-toggle span{
  display:block;
  height:2px;
  width:100%;
  background:var(--c-ink);
  border-radius:2px;
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ============ 面包屑条 ============ */
.crumb-bar{
  background:#F2F5F9;
  border-bottom:1px solid var(--c-line);
}
.crumb-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:56px;
  padding-top:10px;
  padding-bottom:10px;
}
.breadcrumb-list{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--c-text-3);
  min-width:0;
}
.breadcrumb-list a{color:var(--c-text-2);}
.breadcrumb-list a:hover{color:var(--c-primary);}
.breadcrumb-list .sep{color:#B9C4D2;}
.breadcrumb-list .current{
  color:var(--c-text-2);
  max-width:420px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.crumb-date{
  flex:0 0 auto;
  font-size:12.5px;
  color:var(--c-text-3);
  letter-spacing:.02em;
}

/* ============ 文章主体 ============ */
.article-shell{
  padding:56px 0 72px;
}
.article-panel{
  background:var(--c-card);
  border:1px solid var(--c-line-soft);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  padding:48px 56px 44px;
}
.article-head{
  max-width:860px;
  margin:0 auto;
}
.article-badge-row{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  margin-bottom:20px;
}
.badge-pill{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:5px 13px;
  border-radius:var(--radius-pill);
  font-size:12.5px;
  font-weight:600;
  line-height:1.6;
  background:var(--c-primary-light);
  color:var(--c-primary);
}
.badge-pill::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--c-accent);
}
.badge-pill.is-teal{
  background:rgba(14,143,132,.1);
  color:#0B7269;
}
.badge-pill.is-teal::before{background:var(--c-teal);}
.badge-pill.is-plain{
  background:#F1F4F8;
  color:var(--c-text-2);
}
.badge-pill.is-plain::before{background:#B9C4D2;}

.article-title{
  font-size:clamp(26px,3.3vw,42px);
  line-height:1.24;
  letter-spacing:-.01em;
  color:var(--c-ink);
  margin-bottom:18px;
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px 18px;
  font-size:12.5px;
  color:var(--c-text-3);
  margin-bottom:26px;
}
.article-meta span{
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.article-meta i{font-size:13px;color:#A7B4C4;}
.meta-dot{
  width:3px;
  height:3px;
  border-radius:50%;
  background:#C4CEDB;
  display:inline-block;
}
.article-lead{
  position:relative;
  padding-left:16px;
  border-left:3px solid var(--c-accent);
  font-size:17px;
  line-height:1.85;
  color:var(--c-text-2);
  margin-bottom:6px;
}

.article-cover{
  max-width:980px;
  margin:36px auto 8px;
  border-radius:var(--radius-img);
  overflow:hidden;
  background:var(--c-primary-light);
}
.article-cover img{
  width:100%;
  aspect-ratio:21/9;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.article-cover:hover img{transform:scale(1.015);}
.article-cover-caption{
  max-width:980px;
  margin:12px auto 0;
  font-size:13px;
  color:var(--c-text-3);
  text-align:center;
  line-height:1.7;
}

.article-body{
  max-width:760px;
  margin:44px auto 0;
  font-size:17px;
  line-height:1.95;
  color:#25313F;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.4em;}
.article-body h2{
  position:relative;
  font-size:clamp(21px,2.1vw,27px);
  line-height:1.4;
  color:var(--c-ink);
  margin:2em 0 .8em;
  padding-left:16px;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.28em;
  width:4px;
  height:1.05em;
  border-radius:2px;
  background:var(--c-accent);
}
.article-body h3{
  font-size:clamp(18px,1.5vw,21px);
  line-height:1.5;
  color:var(--c-ink);
  margin:1.6em 0 .6em;
}
.article-body h4{
  font-size:17px;
  color:var(--c-ink);
  margin:1.4em 0 .5em;
}
.article-body ul,
.article-body ol{
  margin:0 0 1.4em;
  padding-left:4px;
}
.article-body ul li,
.article-body ol li{
  position:relative;
  padding-left:22px;
  margin-bottom:9px;
  line-height:1.9;
}
.article-body ul li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.78em;
  width:7px;
  height:7px;
  border-radius:2px;
  background:var(--c-primary-light-2);
  border:1.5px solid var(--c-primary);
}
.article-body ol{list-style:decimal;padding-left:22px;}
.article-body ol li{padding-left:4px;}
.article-body ol li::before{display:none;}
.article-body blockquote{
  margin:1.6em 0;
  padding:20px 24px;
  background:#F7F9FC;
  border-left:3px solid var(--c-accent);
  border-radius:0 12px 12px 0;
  color:var(--c-text-2);
  font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;
  border-radius:12px;
  margin:1.4em 0 .6em;
}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{
  font-size:13px;
  color:var(--c-text-3);
  text-align:center;
  margin-top:10px;
}
.article-body a{
  color:var(--c-primary);
  border-bottom:1px solid rgba(29,75,124,.28);
}
.article-body a:hover{
  color:var(--c-accent);
  border-bottom-color:rgba(228,87,43,.4);
}
.article-body strong{color:var(--c-ink);font-weight:600;}
.article-body hr{
  border:none;
  border-top:1px solid var(--c-line);
  margin:2.2em 0;
}
.article-table-wrap{
  width:100%;
  overflow-x:auto;
  margin:1.6em 0;
  border:1px solid var(--c-line);
  border-radius:12px;
  -webkit-overflow-scrolling:touch;
}
.article-body table{
  width:100%;
  min-width:560px;
  border-collapse:collapse;
  font-size:14.5px;
  background:#fff;
}
.article-body th{
  background:var(--c-ink);
  color:#EDF3FA;
  font-weight:600;
  text-align:left;
  padding:13px 16px;
  white-space:nowrap;
}
.article-body td{
  padding:12px 16px;
  border-top:1px solid var(--c-line);
  color:var(--c-text-2);
  vertical-align:top;
}
.article-body tbody tr:nth-child(even){background:#FAFCFE;}
.article-body tbody tr:hover{background:var(--c-primary-light);}

/* 空态 */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  min-height:240px;
  padding:40px 20px;
  text-align:center;
  color:var(--c-text-2);
}
.empty-state svg{
  width:42px;
  height:42px;
  color:#B9C4D2;
}
.empty-state p{font-size:16px;}
.empty-state .btn-ghost{margin-top:4px;}

/* ============ 文末 ============ */
.article-end{
  max-width:760px;
  margin:48px auto 0;
  padding-top:28px;
  border-top:1px solid var(--c-line);
}
.tag-group{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
}
.tag-group .tag-label{
  font-size:13px;
  color:var(--c-text-3);
  margin-right:2px;
}
.tag-pill{
  display:inline-flex;
  align-items:center;
  padding:6px 14px;
  border-radius:var(--radius-pill);
  background:#EEF3F9;
  color:var(--c-text-2);
  font-size:12.5px;
  font-weight:500;
  transition:all .2s var(--ease);
}
.tag-pill:hover{
  background:var(--c-primary);
  color:#fff;
}
.article-end-actions{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  margin-top:26px;
}
.share-group{
  display:flex;
  align-items:center;
  gap:10px;
}
.share-group .share-label{
  font-size:13px;
  color:var(--c-text-3);
  margin-right:2px;
}
.share-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;
  height:38px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-text-2);
  transition:all .2s var(--ease);
}
.share-btn:hover{
  border-color:var(--c-primary);
  color:var(--c-primary);
  background:var(--c-primary-light);
  transform:translateY(-2px);
}
.share-btn svg{width:17px;height:17px;}
.article-end-actions .btn-ghost{
  padding:10px 20px;
  font-size:14px;
}

/* ============ 相关推荐 ============ */
.related-section{
  padding:0 0 72px;
}
.related-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:26px;
}
.related-head h2{
  font-size:clamp(22px,2.2vw,28px);
  color:var(--c-ink);
}
.related-head p{
  font-size:14px;
  color:var(--c-text-3);
  margin-top:6px;
}
.related-head .link-more{
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
  display:inline-flex;
  align-items:center;
  gap:6px;
  white-space:nowrap;
}
.related-head .link-more:hover{color:var(--c-accent);gap:9px;}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.related-card{
  display:flex;
  flex-direction:column;
  background:var(--c-card);
  border:1px solid var(--c-line-soft);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:all .22s var(--ease);
  color:var(--c-text);
  height:100%;
}
.related-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
  color:var(--c-text);
}
.related-thumb{
  overflow:hidden;
  background:var(--c-primary-light);
}
.related-thumb img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .45s var(--ease);
}
.related-card:hover .related-thumb img{transform:scale(1.04);}
.related-body{
  display:flex;
  flex-direction:column;
  flex:1;
  padding:22px 22px 20px;
}
.related-body .badge-pill{
  align-self:flex-start;
  margin-bottom:12px;
}
.related-title{
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  color:var(--c-ink);
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color .2s var(--ease);
}
.related-card:hover .related-title{color:var(--c-primary);}
.related-desc{
  font-size:13.5px;
  line-height:1.75;
  color:var(--c-text-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:16px;
}
.related-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--c-line-soft);
  font-size:12.5px;
  color:var(--c-text-3);
}
.related-foot .go{
  color:var(--c-primary);
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:4px;
}

/* ============ 轻量 CTA ============ */
.cta-strip{
  padding:0 0 88px;
}
.cta-box{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:38px 44px;
  background:#fff;
  border:1px solid var(--c-primary-light-2);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
}
.cta-box h2{
  font-size:clamp(20px,2vw,26px);
  color:var(--c-ink);
  margin-bottom:8px;
}
.cta-box p{
  font-size:14.5px;
  color:var(--c-text-2);
  line-height:1.8;
}
.cta-box .cta-actions{
  display:flex;
  gap:12px;
  flex:0 0 auto;
  flex-wrap:wrap;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-ink);
  color:#C7D2E0;
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-logo{
  display:inline-block;
  font-size:20px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
  letter-spacing:.01em;
}
.footer-logo em{
  font-style:normal;
  font-size:12px;
  font-weight:600;
  letter-spacing:.16em;
  color:#8FA6C2;
  margin-left:8px;
}
.footer-logo:hover{color:#fff;}
.footer-desc{
  font-size:14px;
  line-height:1.9;
  color:#9FB0C6;
  max-width:330px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:#fff;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{
  font-size:14px;
  color:#C7D2E0;
  display:inline-block;
  transition:all .2s var(--ease);
}
.footer-col ul li a:hover{
  color:var(--c-accent);
  transform:translateX(2px);
}
.footer-contact p{
  font-size:13.5px;
  line-height:1.9;
  color:#9FB0C6;
  margin-bottom:8px;
}
.footer-contact strong{color:#E8EEF6;font-weight:600;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
  padding:22px 0 26px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:12.5px;
  color:#8497AE;
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .article-panel{padding:40px 40px 36px;}
}
@media (max-width:991.98px){
  .nav-inner{height:68px;}
  .nav-menu{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 24px 22px;
    background:#fff;
    border-bottom:1px solid var(--c-line);
    box-shadow:0 18px 32px -22px rgba(18,35,61,.4);
  }
  .nav-menu.is-open{display:flex;}
  .nav-link{
    height:48px;
    padding:0 12px;
    border-radius:10px;
    border-top:1px solid #F0F3F7;
    font-size:15px;
  }
  .nav-link:first-child{border-top:none;}
  .nav-link::after{display:none;}
  .nav-link.is-active{padding:0 12px;}
  .nav-cta{
    width:100%;
    margin-top:14px;
    padding:13px 20px;
  }
  .nav-toggle{display:flex;}
  .article-panel{padding:34px 28px 30px;}
  .article-shell{padding:40px 0 56px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cta-box{flex-direction:column;align-items:flex-start;padding:32px 30px;}
}
@media (max-width:767.98px){
  .container{padding-left:18px;padding-right:18px;}
  .crumb-inner{flex-direction:column;align-items:flex-start;gap:4px;padding-top:12px;padding-bottom:12px;}
  .crumb-date{font-size:12px;}
  .breadcrumb-list .current{max-width:240px;}
  .article-panel{padding:26px 20px 26px;border-radius:14px;}
  .article-title{font-size:25px;line-height:1.32;}
  .article-lead{font-size:16px;line-height:1.8;}
  .article-cover{margin-top:26px;}
  .article-cover img{aspect-ratio:16/10;}
  .article-body{font-size:16px;line-height:1.9;margin-top:32px;}
  .article-body h2{font-size:20px;}
  .article-body h3{font-size:17.5px;}
  .article-body blockquote{padding:16px 18px;font-size:15.5px;}
  .article-end-actions{flex-direction:column;align-items:flex-start;}
  .related-grid{grid-template-columns:1fr;gap:18px;}
  .related-head{flex-direction:column;align-items:flex-start;gap:6px;}
  .cta-box{padding:28px 22px;}
  .cta-box .cta-actions{width:100%;}
  .cta-box .cta-actions .btn-brand,
  .cta-box .cta-actions .btn-ghost{flex:1;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-desc{max-width:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
}
@media (max-width:519.98px){
  .logo-text strong{font-size:16.5px;}
  .logo-text em{font-size:10.5px;}
  .logo-mark{width:36px;height:36px;font-size:18px;border-radius:10px;}
  .article-panel{padding:22px 16px 24px;}
  .article-title{font-size:22px;}
  .article-meta{gap:8px 12px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-box .cta-actions{flex-direction:column;}
  .cta-box .cta-actions .btn-brand,
  .cta-box .cta-actions .btn-ghost{width:100%;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category1 */
:root{
  --c-primary:#1D4B7C;
  --c-primary-hover:#163C63;
  --c-primary-50:#EEF3F9;
  --c-primary-100:#DCE7F3;
  --c-accent:#E4572B;
  --c-accent-hover:#C8461F;
  --c-teal:#0E8F84;
  --c-ink:#12233D;
  --c-bg:#F7F8FA;
  --c-card:#FFFFFF;
  --c-line:#E2E8F0;
  --c-line-soft:#E9EEF4;
  --t-1:#16202E;
  --t-2:#48586B;
  --t-3:#8695A8;
  --r-card:16px;
  --r-btn:10px;
  --r-sm:12px;
  --sh-1:0 2px 4px rgba(18,35,61,.04), 0 12px 28px -14px rgba(18,35,61,.14);
  --sh-2:0 4px 8px rgba(18,35,61,.06), 0 18px 36px -16px rgba(18,35,61,.2);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--t-1);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-primary-hover);}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--t-1);letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(228,87,43,.35);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost,.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.2;
  padding:12px 24px;border-radius:var(--r-btn);
  border:1.5px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-brand{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.btn-brand:hover{background:var(--c-primary-hover);border-color:var(--c-primary-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px -14px rgba(29,75,124,.9);}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-hover);border-color:var(--c-primary-hover);transform:translateY(-1px);}
.btn-accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent);}
.btn-accent:hover{background:var(--c-accent-hover);border-color:var(--c-accent-hover);color:#fff;transform:translateY(-1px);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(18,35,61,.55);}
.nav-inner{position:relative;display:flex;align-items:center;height:76px;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:38px;height:38px;border-radius:10px;background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;
}
.logo-text{display:flex;flex-direction:column;line-height:1.16;}
.logo-text strong{font-size:16px;color:var(--t-1);letter-spacing:.02em;}
.logo-text em{font-style:normal;font-size:11.5px;color:var(--t-3);letter-spacing:.09em;}
.nav-menu{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:9px 14px;border-radius:999px;
  font-size:15px;font-weight:500;color:var(--t-2);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:1px;width:18px;height:2px;border-radius:2px;
  background:var(--c-accent);transform:translateX(-50%) scaleX(0);
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:translateX(-50%) scaleX(1);}
.nav-link.is-active{background:var(--c-primary-50);color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{display:none;}
.nav-cta{margin-left:14px;padding:11px 20px;}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--c-line);
  background:#fff;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  cursor:pointer;transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-primary);transition:transform .25s var(--ease),opacity .2s;}
.nav-toggle:hover{border-color:var(--c-primary-100);background:var(--c-primary-50);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 窄幅 Hero ---------- */
.page-hero{
  position:relative;
  padding:52px 0 56px;
  background-color:#F2F5F9;
  background-image:
    linear-gradient(to right, rgba(29,75,124,.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(29,75,124,.055) 1px, transparent 1px);
  background-size:32px 32px;
  border-bottom:1px solid var(--c-line);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--t-3);margin-bottom:18px;}
.crumb a{color:var(--t-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb .sep{color:#C3CDDA;}
.crumb .now{color:var(--c-primary);font-weight:600;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;background:#fff;border:1px solid var(--c-primary-100);
  font-size:12.5px;font-weight:600;color:var(--c-primary);margin-bottom:16px;
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:inline-block;}
.page-hero h1{
  font-size:clamp(26px,3.2vw,38px);line-height:1.28;font-weight:700;
  max-width:820px;margin-bottom:14px;
}
.page-hero .hero-desc{
  font-size:16px;color:var(--t-2);max-width:720px;margin-bottom:24px;
}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px 26px;font-size:13px;color:var(--t-2);}
.hero-facts span{display:inline-flex;align-items:center;gap:8px;}
.hero-facts i{width:6px;height:6px;border-radius:2px;background:var(--c-teal);display:inline-block;font-style:normal;}
.hero-facts b{color:var(--c-primary);font-weight:700;}

/* ---------- 主体：目录 + 长文 ---------- */
.doc-wrap{padding:64px 0 80px;}
.doc-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start;}
.doc-toc{position:sticky;top:104px;}
.toc-title{font-size:12.5px;font-weight:700;letter-spacing:.12em;color:var(--t-3);margin-bottom:14px;}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--c-line);}
.toc-link{
  position:relative;display:block;padding:9px 0 9px 16px;
  font-size:14px;color:var(--t-2);line-height:1.5;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.toc-link::before{
  content:"";position:absolute;left:-1px;top:6px;bottom:6px;width:3px;border-radius:3px;
  background:var(--c-accent);opacity:0;transition:opacity .2s var(--ease);
}
.toc-link:hover{color:var(--c-primary);}
.toc-link.is-current{color:var(--c-primary);font-weight:600;}
.toc-link.is-current::before{opacity:1;}
.toc-note{
  margin-top:22px;padding:16px;border-radius:var(--r-sm);
  background:#fff;border:1px solid var(--c-line-soft);box-shadow:var(--sh-1);
  font-size:13px;color:var(--t-2);line-height:1.75;
}
.toc-note strong{display:block;color:var(--t-1);font-size:13.5px;margin-bottom:6px;}

.doc-section{padding-top:8px;margin-bottom:56px;scroll-margin-top:100px;}
.doc-section:last-child{margin-bottom:0;}
.doc-section h2{
  position:relative;font-size:clamp(22px,2.3vw,28px);line-height:1.4;
  padding-left:16px;margin-bottom:18px;
}
.doc-section h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:4px;background:var(--c-accent);
}
.doc-section h3{font-size:18px;margin:26px 0 10px;color:var(--t-1);}
.doc-section p{font-size:16px;color:var(--t-2);}
.doc-section p strong{color:var(--t-1);font-weight:600;}

.dot-list{display:flex;flex-direction:column;gap:10px;margin:16px 0 4px;}
.dot-list li{position:relative;padding-left:22px;font-size:15.5px;color:var(--t-2);line-height:1.8;}
.dot-list li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:2px;
  background:var(--c-primary);transform:rotate(0deg);
}
.dot-list li b{color:var(--t-1);font-weight:600;}

/* 三张读法卡：两列 + 跨列 */
.read-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:22px;}
.read-card{
  background:var(--c-card);border:1px solid var(--c-line-soft);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.read-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.read-card.wide{grid-column:1 / -1;}
.read-card .num{
  font-size:13px;font-weight:700;color:var(--c-accent);letter-spacing:.1em;display:block;margin-bottom:10px;
}
.read-card h3{font-size:17px;margin:0 0 8px;}
.read-card p{font-size:14.5px;margin:0;line-height:1.8;color:var(--t-2);}

/* 表格 */
.table-wrap{
  margin-top:22px;border:1px solid var(--c-line-soft);border-radius:14px;
  box-shadow:var(--sh-1);overflow-x:auto;background:#fff;
}
.spec-table{width:100%;min-width:700px;border-collapse:collapse;}
.spec-table thead th{
  background:var(--c-ink);color:#E8EEF6;font-size:13px;font-weight:600;
  padding:14px 18px;text-align:left;white-space:nowrap;letter-spacing:.02em;
}
.spec-table tbody td{
  padding:13px 18px;border-bottom:1px solid var(--c-line-soft);
  font-size:14.5px;color:var(--t-2);vertical-align:top;line-height:1.7;
}
.spec-table tbody tr:last-child td{border-bottom:none;}
.spec-table tbody tr:nth-child(even){background:#FAFBFD;}
.spec-table tbody td:first-child{
  color:var(--t-1);font-weight:600;white-space:nowrap;
}
.spec-table tbody td:first-child::before{
  content:"";display:inline-block;width:8px;height:8px;border-radius:3px;
  background:var(--c-primary);margin-right:10px;vertical-align:1px;
}
.spec-table tbody tr:nth-child(3n) td:first-child::before{background:var(--c-teal);}
.table-caption{font-size:12.5px;color:var(--t-3);margin-top:10px;}

/* 场景卡 2x2 */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:22px;}
.scene-card{
  position:relative;background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--r-card);
  padding:26px 24px 24px;box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.scene-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);}
.scene-card .ghost-num{
  position:absolute;right:16px;top:6px;font-size:44px;font-weight:700;line-height:1;
  color:var(--c-primary-50);letter-spacing:-.02em;pointer-events:none;
}
.scene-card h3{font-size:17px;margin:0 0 10px;position:relative;}
.scene-card p{font-size:14.5px;color:var(--t-2);margin:0;line-height:1.8;position:relative;}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin-top:28px;}
.flow-step{position:relative;padding:0 16px 0 0;text-align:left;}
.flow-step::after{
  content:"";position:absolute;top:22px;left:52px;right:12px;height:0;
  border-top:1px dashed #C6D3E2;
}
.flow-step:last-child::after{display:none;}
.flow-node{
  width:44px;height:44px;border-radius:50%;background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;
  margin-bottom:14px;position:relative;z-index:1;
  box-shadow:0 8px 18px -12px rgba(29,75,124,.9);
}
.flow-step h3{font-size:16px;margin:0 0 6px;}
.flow-step p{font-size:14px;color:var(--t-2);margin:0;line-height:1.75;}

/* FAQ */
.accordion{margin-top:22px;}
.accordion-item{
  background:#fff;border:1px solid var(--c-line-soft);border-radius:14px;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:var(--c-primary-100);
  border-left:3px solid var(--c-accent);
  box-shadow:var(--sh-2);
}
.accordion-button{
  width:100%;text-align:left;font-size:16px;font-weight:600;color:var(--t-1);
  background:#fff;border:none;padding:18px 56px 18px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  box-shadow:none !important;cursor:pointer;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.accordion-button:hover{color:var(--c-primary);}
.accordion-button:not(.collapsed){color:var(--c-primary);}
.accordion-button:focus{outline:none;}
.accordion-button:focus-visible{outline:3px solid rgba(228,87,43,.35);outline-offset:-3px;}
.accordion-button::after{
  content:"+";flex:0 0 24px;width:24px;height:24px;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:500;line-height:1;color:var(--c-primary);
  background-image:none !important;margin-left:auto;
  transition:transform .25s var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);background-image:none !important;}
.accordion-body{
  padding:0 20px 20px;font-size:15px;color:var(--t-2);line-height:1.85;
}
.accordion-body p:last-child{margin-bottom:0;}

/* CTA 条 */
.final-cta-wrap{padding:0 0 88px;}
.final-cta{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  padding:56px 40px;text-align:center;color:#E8EEF6;
  background-image:linear-gradient(rgba(18,35,61,.92),rgba(18,35,61,.92)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  box-shadow:var(--sh-2);
}
.final-cta h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;}
.final-cta p{color:#C7D2E0;font-size:15.5px;max-width:640px;margin:0 auto 24px;}
.final-cta .cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.final-cta .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.final-cta .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:#C7D2E0;padding:64px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px 32px;
  padding-bottom:44px;
}
.footer-brand .footer-logo{
  display:inline-block;font-size:18px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.02em;
}
.footer-brand .footer-logo em{font-style:normal;color:#8FB4DA;font-weight:600;}
.footer-desc{font-size:14px;line-height:1.85;color:#9FB0C6;margin:0;max-width:330px;}
.footer-col h4{font-size:14px;color:#fff;margin:0 0 16px;font-weight:600;letter-spacing:.04em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{
  display:inline-block;font-size:14px;color:#C7D2E0;transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px);}
.footer-contact p{font-size:14px;color:#9FB0C6;margin:0 0 10px;line-height:1.7;}
.footer-contact strong{color:#E8EEF6;font-weight:600;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 24px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
}
.footer-bottom p{font-size:12.5px;color:#8695A8;margin:0;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .doc-layout{grid-template-columns:210px minmax(0,1fr);gap:36px;}
}
@media (max-width:991.98px){
  .nav-toggle{display:flex;}
  .nav-menu{
    position:absolute;top:100%;left:-24px;right:-24px;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:8px 24px 20px;margin-left:0;
    border-bottom:1px solid var(--c-line);box-shadow:var(--sh-2);
  }
  .nav-menu.is-open{display:flex;}
  .nav-link{padding:14px 4px;border-radius:0;border-top:1px solid var(--c-line-soft);font-size:15px;}
  .nav-link:first-child{border-top:none;}
  .nav-link::after{display:none;}
  .nav-link.is-active{background:transparent;color:var(--c-primary);}
  .nav-cta{width:100%;margin:14px 0 0;justify-content:center;}
  .doc-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .doc-toc{display:none;}
  .doc-wrap{padding:48px 0 56px;}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 0;}
  .flow-step:nth-child(2)::after{display:none;}
  .footer-grid{grid-template-columns:1.4fr 1fr;gap:36px 28px;}
}
@media (max-width:767.98px){
  .container{padding-left:18px;padding-right:18px;}
  .nav-menu{left:-18px;right:-18px;padding-left:18px;padding-right:18px;}
  .nav-inner{height:64px;}
  .page-hero{padding:36px 0 40px;}
  .hero-facts{gap:8px 18px;font-size:12.5px;}
  .doc-wrap{padding:40px 0 48px;}
  .doc-section{margin-bottom:44px;}
  .read-grid{grid-template-columns:minmax(0,1fr);}
  .scene-grid{grid-template-columns:minmax(0,1fr);}
  .flow{grid-template-columns:minmax(0,1fr);gap:0;}
  .flow-step{padding:0 0 26px 28px;border-left:2px solid var(--c-primary-100);margin-left:20px;}
  .flow-step:last-child{border-left-color:transparent;padding-bottom:0;}
  .flow-node{position:absolute;left:-22px;top:0;margin-bottom:0;width:40px;height:40px;font-size:15px;}
  .flow-step h3{margin-top:0;}
  .flow-step p{padding-left:0;}
  .flow-step::after{display:none !important;}
  .final-cta{padding:40px 22px;}
  .final-cta .cta-actions .btn-brand,.final-cta .cta-actions .btn-ghost{width:100%;}
  .site-footer{padding-top:48px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;}
  .accordion-button{font-size:15.5px;padding:16px 48px 16px 18px;}
  .accordion-body{padding:0 18px 18px;font-size:14.5px;}
}
@media (max-width:519.98px){
  .logo-text strong{font-size:15px;}
  .logo-text em{font-size:11px;}
  .hero-badge{font-size:12px;}
  .btn-brand,.btn-ghost,.btn-accent{width:100%;}
  .read-card,.scene-card{padding:20px;}
  .spec-table{min-width:620px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --c-primary:#1D4B7C;
  --c-primary-hover:#163C63;
  --c-primary-50:#EEF3F9;
  --c-primary-100:#DCE7F3;
  --c-accent:#E4572B;
  --c-accent-hover:#C8461F;
  --c-teal:#0E8F84;
  --c-ink:#12233D;
  --c-bg:#F7F8FA;
  --c-card:#FFFFFF;
  --c-line:#E2E8F0;
  --c-line-soft:#E9EEF4;
  --t-1:#16202E;
  --t-2:#48586B;
  --t-3:#8695A8;
  --t-inv:#E8EEF6;
  --r-card:16px;
  --r-img:16px;
  --r-btn:10px;
  --sh-1:0 2px 4px rgba(18,35,61,.04),0 12px 28px -14px rgba(18,35,61,.14);
  --sh-2:0 4px 8px rgba(18,35,61,.06),0 18px 36px -16px rgba(18,35,61,.2);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--t-1);
  background:var(--c-bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-primary-hover)}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(228,87,43,.35);outline-offset:2px}

/* 容器 */
.container{
  width:100%;
  max-width:1200px;
  margin-left:auto;
  margin-right:auto;
  padding-left:24px;
  padding-right:24px;
}
@media (min-width:1200px){.container{max-width:1200px}}

/* 头部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 26px -18px rgba(18,35,61,.35)}
.nav-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:76px;
}
.logo{display:flex;align-items:center;gap:12px;color:var(--t-1)}
.logo:hover{color:var(--t-1)}
.logo-mark{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--c-primary);
  color:#fff;
  font-size:19px;
  font-weight:700;
  letter-spacing:0;
  box-shadow:0 6px 14px -8px rgba(29,75,124,.8);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-text strong{font-size:17px;font-weight:700;letter-spacing:-.01em}
.logo-text em{font-style:normal;font-size:11.5px;letter-spacing:.14em;color:var(--t-3);margin-top:3px}
.nav-menu{display:flex;align-items:center;gap:10px}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--t-2);
  border-radius:999px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--c-accent);
  border-radius:2px;
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--c-primary);background:var(--c-primary-50)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{background:var(--c-primary-50);color:var(--c-primary);font-weight:600}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;height:44px;
  padding:0 10px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:10px;
  cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:var(--c-primary);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 按钮 */
.btn-brand,.btn-ghost,.btn-accent{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  cursor:pointer;
  text-align:center;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.btn-brand{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.btn-brand:hover{background:var(--c-primary-hover);border-color:var(--c-primary-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-hover);border-color:var(--c-primary-hover);transform:translateY(-1px)}
.btn-accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent)}
.btn-accent:hover{background:var(--c-accent-hover);border-color:var(--c-accent-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn-brand:active,.btn-ghost:active,.btn-accent:active{transform:translateY(0)}

/* 通用板块 */
.section{padding:96px 0}
.section--soft{background:#fff;border-top:1px solid var(--c-line-soft);border-bottom:1px solid var(--c-line-soft)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--c-primary-50);
  color:var(--c-primary);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent)}
.section-title{
  font-size:clamp(24px,2.6vw,36px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--t-1);
  margin:18px 0 14px;
}
.section-desc{font-size:16px;line-height:1.85;color:var(--t-2);max-width:760px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;flex-wrap:wrap}

/* 分类页标题区 */
.cat-hero{
  position:relative;
  padding:72px 0 64px;
  background-color:var(--c-bg);
  background-image:linear-gradient(rgba(29,75,124,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(29,75,124,.055) 1px,transparent 1px);
  background-size:32px 32px;
  border-bottom:1px solid var(--c-line);
}
.cat-hero__inner{display:grid;grid-template-columns:1.45fr .9fr;gap:52px;align-items:center}
.cat-hero h1{
  font-size:clamp(30px,4vw,48px);
  line-height:1.18;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--t-1);
  margin:20px 0 18px;
}
.cat-hero__lead{font-size:16px;line-height:1.9;color:var(--t-2);max-width:600px}
.cat-hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.cat-hero__media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-img);
  box-shadow:var(--sh-2);
}
.cat-hero__meta{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin-top:34px;
  padding-top:26px;
  border-top:1px solid rgba(29,75,124,.12);
}
.cat-hero__meta div{min-width:110px}
.cat-hero__meta strong{display:block;font-size:22px;font-weight:700;color:var(--c-primary)}
.cat-hero__meta span{font-size:12.5px;color:var(--t-3)}

/* 合作方式卡片网格 */
.serve-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.serve-card{
  grid-column:span 4;
  display:flex;
  flex-direction:column;
  background:var(--c-card);
  border:1px solid var(--c-line-soft);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--sh-1);
  transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.serve-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:var(--c-primary-100)}
.serve-card--wide{grid-column:span 8}
.serve-card--tall{grid-column:span 4}
.card-num{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--c-accent);
  margin-bottom:14px;
}
.card-title{font-size:clamp(18px,1.6vw,22px);line-height:1.5;font-weight:600;color:var(--t-1);margin-bottom:10px}
.card-desc{font-size:15px;line-height:1.85;color:var(--t-2);margin-bottom:18px}
.card-list{margin-bottom:22px}
.card-list li{
  position:relative;
  padding-left:18px;
  font-size:14.5px;
  line-height:1.9;
  color:var(--t-2);
}
.card-list li::before{
  content:"";
  position:absolute;
  left:0;top:12px;
  width:6px;height:6px;
  border-radius:2px;
  background:var(--c-teal);
  opacity:.85;
}
.card-link{
  margin-top:auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
}
.card-link::after{content:"→";transition:transform .2s var(--ease)}
.card-link:hover::after{transform:translateX(4px)}
.serve-card--wide .card-list{display:grid;grid-template-columns:1fr 1fr;gap:0 24px}

/* 图文块 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split__media img{
  width:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  border-radius:var(--r-img);
  box-shadow:var(--sh-2);
}
.split__body h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:16px;
  color:var(--t-1);
}
.split__body p{font-size:15.5px;line-height:1.9;color:var(--t-2);margin-bottom:16px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:999px;
  background:var(--c-primary-50);
  color:var(--c-primary);
  font-size:12.5px;
  font-weight:600;
}
.tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-teal)}
.tag--accent{background:#FDF0EC;color:var(--c-accent-hover)}
.tag--accent::before{background:var(--c-accent)}

/* 方案对照 */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:44px}
.compare-col{
  border-radius:var(--r-card);
  border:1px solid var(--c-line-soft);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow .2s var(--ease),transform .2s var(--ease);
}
.compare-col:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.compare-title{
  padding:20px 26px;
  background:var(--c-primary);
  color:#fff;
  font-size:18px;
  font-weight:600;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.compare-title span{font-size:12.5px;font-weight:600;padding:4px 12px;border-radius:999px;background:rgba(255,255,255,.16);color:#fff}
.compare-col--soft .compare-title{background:var(--c-primary-hover)}
.compare-col--soft .compare-body{background:var(--c-primary-50)}
.compare-body{background:#fff;padding:26px}
.compare-sub{font-size:14px;color:var(--t-3);margin-bottom:18px}
.compare-list li{
  position:relative;
  padding:12px 0 12px 26px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--t-2);
  border-bottom:1px dashed var(--c-line);
}
.compare-list li:last-child{border-bottom:none}
.compare-list li::before{
  content:"";
  position:absolute;
  left:0;top:20px;
  width:8px;height:8px;
  border-radius:50%;
  border:2px solid var(--c-primary);
  background:#fff;
}
.compare-col--soft .compare-list li::before{border-color:var(--c-accent)}

/* FAQ */
.faq-accordion{margin-top:36px;max-width:900px}
.faq-accordion .accordion-item{
  background:#fff;
  border:1px solid var(--c-line-soft);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.faq-accordion .accordion-item:hover{box-shadow:var(--sh-2)}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){
  border-left:3px solid var(--c-accent);
  box-shadow:var(--sh-2);
}
.faq-accordion .accordion-button{
  width:100%;
  padding:18px 22px;
  font-size:16px;
  font-weight:600;
  color:var(--t-1);
  background:#fff;
  border-radius:14px;
  box-shadow:none;
  text-align:left;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--c-primary);background:#fff;box-shadow:none}
.faq-accordion .accordion-button:focus{z-index:2;box-shadow:0 0 0 3px rgba(228,87,43,.22);border-color:transparent}
.faq-accordion .accordion-button::after{
  content:"+";
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  background-image:none;
  background-color:var(--c-primary-50);
  color:var(--c-primary);
  font-size:18px;
  font-weight:400;
  line-height:1;
  border-radius:50%;
  transform:none;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::after{
  content:"−";
  background-color:var(--c-primary);
  color:#fff;
  transform:none;
}
.faq-accordion .accordion-body{
  padding:0 22px 20px;
  font-size:14.5px;
  line-height:1.9;
  color:var(--t-2);
}

/* 终局 CTA */
.cta-box{
  background:#fff;
  border:1px solid var(--c-primary-100);
  border-radius:var(--r-card);
  padding:52px;
  display:grid;
  grid-template-columns:1.25fr .85fr;
  gap:48px;
  align-items:center;
  box-shadow:var(--sh-1);
}
.cta-box h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
  margin-bottom:14px;
}
.cta-box p{font-size:15.5px;line-height:1.9;color:var(--t-2);margin-bottom:24px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-panel{
  background:var(--c-bg);
  border:1px solid var(--c-line);
  border-radius:14px;
  padding:24px;
}
.cta-panel h3{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--t-1)}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--t-2);margin-bottom:6px}
.field input{
  width:100%;
  height:44px;
  padding:0 14px;
  font-size:14.5px;
  color:var(--t-1);
  background:#fff;
  border:1px solid #D9E0EA;
  border-radius:var(--r-btn);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input::placeholder{color:#9AA7B6}
.field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,75,124,.14)}
.cta-panel .btn-brand{width:100%}
.form-note{font-size:12.5px;color:var(--t-3);margin-top:12px;line-height:1.7}

/* 页脚 */
.site-footer{background:var(--c-ink);color:var(--t-inv);padding-top:64px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px}
.footer-logo{display:inline-block;font-size:19px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:-.01em}
.footer-logo em{font-style:normal;font-size:12px;letter-spacing:.14em;color:#8FA6C2;margin-left:6px;font-weight:500}
.footer-logo:hover{color:#fff}
.footer-desc{font-size:14px;line-height:1.9;color:#A9BACC;max-width:330px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{
  display:inline-block;
  font-size:14px;
  color:#C7D2E0;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-col ul li a:hover{color:var(--c-accent);transform:translateX(2px)}
.footer-contact p{font-size:14px;line-height:1.9;color:#A9BACC;margin-bottom:10px}
.footer-contact strong{color:#fff;font-weight:600}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:22px 0 28px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
}
.footer-bottom p{font-size:12.5px;color:#8FA6C2}

/* 响应式 */
@media (max-width:1199px){
  .cat-hero__inner{grid-template-columns:1.3fr .9fr;gap:36px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-contact{grid-column:span 3}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .nav-menu{
    position:absolute;
    top:100%;left:0;right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 18px 20px;
    background:#fff;
    border-bottom:1px solid var(--c-line);
    box-shadow:0 22px 34px -24px rgba(18,35,61,.4);
  }
  .nav-menu.is-open{display:flex}
  .nav-link{
    height:48px;
    padding:0 8px;
    border-bottom:1px solid var(--c-line-soft);
    border-radius:0;
  }
  .nav-link::after{display:none}
  .nav-link.is-active{background:transparent;color:var(--c-primary)}
  .nav-cta{margin:16px 0 0;width:100%}
  .nav-toggle{display:flex}
  .cat-hero{padding:52px 0 48px}
  .cat-hero__inner{grid-template-columns:1fr;gap:32px}
  .cat-hero__media{order:-1}
  .cat-hero__media img{aspect-ratio:16/9}
  .serve-card,.serve-card--wide,.serve-card--tall{grid-column:span 6}
  .serve-card--wide .card-list{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:32px}
  .compare-wrap{grid-template-columns:1fr}
  .cta-box{grid-template-columns:1fr;padding:36px;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-contact{grid-column:span 2}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .container{padding-left:18px;padding-right:18px}
  .nav-inner{height:64px}
  .logo-mark{width:36px;height:36px;font-size:17px;border-radius:10px}
  .logo-text strong{font-size:16px}
  .section-head{margin-bottom:32px;gap:16px}
  .serve-card,.serve-card--wide,.serve-card--tall{grid-column:span 12;padding:24px}
  .cat-hero h1{margin:16px 0 14px}
  .cat-hero__meta{gap:18px}
  .cat-hero__meta div{min-width:calc(50% - 18px)}
  .compare-title{padding:16px 20px;font-size:16px}
  .compare-body{padding:20px}
  .cta-box{padding:28px 22px}
  .cta-actions .btn-brand,.cta-actions .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-contact{grid-column:span 1}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .cat-hero__actions .btn-brand,.cat-hero__actions .btn-ghost{width:100%}
  .card-title{font-size:18px}
  .faq-accordion .accordion-button{font-size:15px;padding:16px 18px}
  .faq-accordion .accordion-body{padding:0 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* roulang page: category3 */
:root{
  --c-primary:#1D4B7C;
  --c-primary-hover:#163C63;
  --c-primary-50:#EEF3F9;
  --c-primary-100:#DCE7F3;
  --c-accent:#E4572B;
  --c-accent-hover:#C8461F;
  --c-teal:#0E8F84;
  --c-ink:#12233D;
  --c-bg:#F7F8FA;
  --c-card:#FFFFFF;
  --c-line:#E2E8F0;
  --c-line-soft:#E9EEF4;
  --t-main:#16202E;
  --t-sub:#48586B;
  --t-mute:#8695A8;
  --t-invert:#E8EEF6;
  --r-card:16px;
  --r-btn:10px;
  --r-img:16px;
  --r-sm:12px;
  --shadow-1:0 2px 4px rgba(18,35,61,.04),0 12px 28px -14px rgba(18,35,61,.14);
  --shadow-2:0 4px 8px rgba(18,35,61,.06),0 18px 36px -16px rgba(18,35,61,.2);
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--c-bg);
  color:var(--t-main);
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-primary-hover);}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--t-main);letter-spacing:-.01em;}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.18;}
h2{font-size:clamp(24px,2.6vw,36px);line-height:1.3;}
h3{font-size:clamp(18px,1.6vw,22px);line-height:1.5;font-weight:600;}
button{font-family:inherit;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (max-width:520px){.container{padding:0 18px;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px -18px rgba(18,35,61,.5);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;}
.logo-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(150deg,var(--c-primary),#265C93);
  color:#fff;font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.logo-text{display:flex;flex-direction:column;line-height:1.18;}
.logo-text strong{font-size:17px;color:var(--t-main);font-weight:700;letter-spacing:.01em;}
.logo-text em{font-style:normal;font-size:11.5px;color:var(--t-mute);letter-spacing:.14em;}
.nav-menu{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--t-sub);
  padding:6px 2px;border-radius:999px;transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;
  background:var(--c-accent);border-radius:2px;transition:left .22s var(--ease),right .22s var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{left:0;right:0;}
.nav-link.is-active{
  color:var(--c-primary);background:var(--c-primary-50);
  padding:8px 16px;font-weight:600;
}
.nav-link.is-active::after{display:none;}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-primary);color:#fff;font-size:15px;font-weight:600;
  padding:12px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  white-space:nowrap;
}
.btn-brand:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn-brand:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(228,87,43,.35);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--c-primary);font-size:15px;font-weight:600;
  padding:12px 24px;border-radius:var(--r-btn);border:1.5px solid var(--c-primary);
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.btn-ghost:hover{background:var(--c-primary-50);color:var(--c-primary-hover);transform:translateY(-1px);}
.btn-ghost:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(228,87,43,.35);}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--c-accent);color:#fff;font-size:15px;font-weight:600;
  padding:12px 26px;border-radius:var(--r-btn);border:1px solid transparent;
  transition:background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-accent:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-1px);box-shadow:0 12px 24px -14px rgba(228,87,43,.9);}
.btn-accent:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(228,87,43,.35);}
.nav-cta{padding:11px 20px;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 11px;background:#fff;
  border:1px solid var(--c-line);border-radius:10px;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:var(--t-main);border-radius:2px;transition:transform .22s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;background:#fff;border-bottom:1px solid var(--c-line);
  padding:64px 0 56px;overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(29,75,124,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(29,75,124,.05) 1px,transparent 1px);
  background-size:28px 28px;
  mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 20%,#000 0%,transparent 78%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:1;}
.breadcrumb-line{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--t-mute);margin-bottom:18px;flex-wrap:wrap;}
.breadcrumb-line a{color:var(--t-mute);}
.breadcrumb-line a:hover{color:var(--c-primary);}
.hero-center{max-width:760px;margin:0 auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;background:var(--c-primary-50);
  color:var(--c-primary);font-size:12.5px;font-weight:600;
  padding:6px 14px;border-radius:999px;margin-bottom:20px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:inline-block;}
.page-hero h1{margin-bottom:16px;}
.page-hero .lede{
  font-size:16px;color:var(--t-sub);max-width:640px;margin:0 auto 26px;line-height:1.8;
}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

/* ---------- Sections ---------- */
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
.section-head{max-width:720px;margin:0 auto 48px;text-align:center;}
.section-head .kicker{
  display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.12em;
  color:var(--c-teal);text-transform:uppercase;margin-bottom:12px;
}
.section-head p{color:var(--t-sub);font-size:15.5px;margin:12px 0 0;}

/* ---------- Steps ---------- */
.step-flow{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;
  counter-reset:step;
}
.step-item{position:relative;padding-top:8px;text-align:center;}
.step-item::before{
  content:"";position:absolute;top:31px;left:-12px;right:calc(50% + 31px);
  height:1px;border-top:1px dashed #C3D2E3;
}
.step-item:first-child::before{display:none;}
.step-node{
  width:62px;height:62px;border-radius:50%;margin:0 auto 18px;
  background:var(--c-primary);color:#fff;font-size:20px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 24px -16px rgba(29,75,124,.9);
  position:relative;z-index:1;
}
.step-item:nth-child(4) .step-node{background:var(--c-accent);box-shadow:0 12px 24px -16px rgba(228,87,43,.9);}
.step-item h3{font-size:17px;margin-bottom:8px;}
.step-item p{font-size:14px;color:var(--t-sub);line-height:1.8;margin:0;}
.step-tag{
  display:inline-block;margin-top:12px;font-size:12px;color:var(--c-primary);
  background:var(--c-primary-50);border-radius:999px;padding:3px 10px;
}

/* ---------- Split content ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split + .split{margin-top:88px;}
.split.reverse .split-media{order:2;}
.split-body h2{margin-bottom:16px;}
.split-body .lead{font-size:16.5px;color:var(--t-sub);margin-bottom:20px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--t-sub);
  padding:10px 0;border-bottom:1px dashed var(--c-line);
}
.check-list li:last-child{border-bottom:none;}
.check-list i{color:var(--c-teal);font-size:14px;margin-top:6px;flex:0 0 auto;}
.split-media{position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--shadow-1);}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease);}
.split-media:hover img{transform:scale(1.03);}
.media-caption{
  position:absolute;left:16px;bottom:16px;background:rgba(18,35,61,.78);
  color:#fff;font-size:12.5px;padding:6px 12px;border-radius:999px;
}

/* ---------- Notice strip ---------- */
.notice-strip{
  background:var(--c-primary-50);border:1px solid var(--c-primary-100);
  border-radius:var(--r-card);padding:24px 28px;
  display:flex;gap:18px;align-items:flex-start;margin-top:64px;
}
.notice-strip i{color:var(--c-primary);font-size:20px;margin-top:4px;}
.notice-strip h3{font-size:16px;margin-bottom:6px;}
.notice-strip p{font-size:14px;color:var(--t-sub);margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.accordion{--bs-accordion-border-width:0;--bs-accordion-bg:transparent;}
.accordion-item{
  border:1px solid var(--c-line-soft);border-radius:14px;background:#fff;
  margin-bottom:12px;overflow:hidden;box-shadow:0 2px 4px rgba(18,35,61,.03);
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.accordion-item:hover{border-color:var(--c-primary-100);}
.accordion-button{
  font-size:16px;font-weight:600;color:var(--t-main);background:#fff;
  padding:18px 52px 18px 22px;border:none;border-radius:14px;
  box-shadow:none!important;line-height:1.6;
}
.accordion-button:not(.collapsed){
  color:var(--c-primary);background:#fff;border-left:3px solid var(--c-accent);
  border-radius:14px 14px 0 0;padding-left:19px;
}
.accordion-button::after{
  background: none;content:"+";font-family:inherit;font-size:22px;font-weight:400;
  color:var(--c-primary);width:auto;height:auto;right:22px;top:50%;
  transform:translateY(-50%) rotate(0deg);transition:transform .25s var(--ease);
  display:flex;align-items:center;justify-content:center;line-height:1;
}
.accordion-button[aria-expanded="true"]::after{content:"−";transform:translateY(-50%) rotate(180deg);}
.accordion-body{
  font-size:15px;color:var(--t-sub);padding:0 22px 20px;line-height:1.9;
}
.accordion-button:focus-visible{box-shadow:0 0 0 3px rgba(228,87,43,.3)!important;}

/* ---------- Related cards ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  background:#fff;border:1px solid var(--c-line-soft);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.rel-thumb{overflow:hidden;}
.rel-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease);}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:20px 22px 22px;flex:1;display:flex;flex-direction:column;}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  background:var(--c-primary-50);color:var(--c-primary);
  font-size:12.5px;font-weight:600;border-radius:999px;padding:4px 12px;margin-bottom:12px;
}
.badge-soft.teal{background:rgba(14,143,132,.1);color:var(--c-teal);}
.rel-body h3{font-size:17px;line-height:1.5;margin-bottom:10px;}
.rel-body h3 a{color:var(--t-main);}
.rel-body h3 a:hover{color:var(--c-primary);}
.rel-body p{font-size:14px;color:var(--t-sub);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-meta{
  margin-top:auto;display:flex;justify-content:space-between;align-items:center;
  font-size:12.5px;color:var(--t-mute);border-top:1px solid var(--c-line-soft);padding-top:14px;
}

/* ---------- CTA ---------- */
.cta-band{
  background:#fff;border:1px solid var(--c-primary-100);border-radius:var(--r-card);
  padding:48px;box-shadow:var(--shadow-1);
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
}
.cta-copy h2{margin-bottom:14px;}
.cta-copy p{font-size:15.5px;color:var(--t-sub);margin-bottom:22px;}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:8px;}
.cta-points span{
  font-size:12.5px;color:var(--c-primary);background:var(--c-primary-50);
  border-radius:999px;padding:5px 12px;
}
.form-card h3{font-size:18px;margin-bottom:6px;}
.form-card .hint{font-size:13px;color:var(--t-mute);margin-bottom:18px;}
.form-label{font-size:13px;font-weight:600;color:var(--t-sub);margin-bottom:6px;display:block;}
.form-control{
  height:44px;border:1px solid #D9E0EA;border-radius:10px;font-size:15px;
  padding:0 14px;color:var(--t-main);background:#fff;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-control::placeholder{color:#9AA7B6;}
.form-control:focus{
  border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(29,75,124,.14);outline:none;
}
.form-note{font-size:12.5px;color:var(--t-mute);margin:12px 0 0;}
.form-hint{font-size:12.5px;color:#C8461F;margin-top:6px;display:none;}
.form-hint.show{display:block;}
.form-row{margin-bottom:16px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-ink);color:var(--t-invert);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-logo{
  display:inline-block;font-size:18px;font-weight:700;color:#fff;margin-bottom:14px;
}
.footer-logo em{font-style:normal;font-size:12px;color:#8FA3BC;font-weight:500;margin-left:8px;letter-spacing:.1em;}
.footer-desc{font-size:14px;color:#A9B8CB;line-height:1.85;margin:0;max-width:320px;}
.site-footer h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:18px;letter-spacing:.02em;}
.site-footer ul li{margin-bottom:12px;}
.site-footer ul li a{font-size:14px;color:#C7D2E0;display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease);}
.site-footer ul li a:hover{color:var(--c-accent);transform:translateX(2px);}
.footer-contact p{font-size:14px;color:#A9B8CB;margin:0 0 10px;}
.footer-contact strong{color:#fff;font-weight:600;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:12.5px;color:#8798AE;margin:0;}

/* ---------- Responsive ---------- */
@media (max-width:1200px){
  .nav-menu{gap:24px;}
}
@media (max-width:991px){
  .section{padding:72px 0;}
  .section--tight{padding:56px 0;}
  .nav-menu{
    position:absolute;left:0;right:0;top:100%;
    background:#fff;border-bottom:1px solid var(--c-line);
    flex-direction:column;align-items:stretch;gap:0;
    padding:8px 18px 20px;display:none;
    box-shadow:0 18px 32px -22px rgba(18,35,61,.6);
  }
  .nav-menu.is-open{display:flex;}
  .nav-link{
    height:48px;display:flex;align-items:center;padding:0 4px !important;
    border-top:1px solid var(--c-line-soft);border-radius:0;background:none !important;
  }
  .nav-link::after{display:none;}
  .nav-link.is-active{color:var(--c-primary);font-weight:600;}
  .nav-cta{width:100%;margin-top:14px;height:48px;}
  .nav-toggle{display:flex;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split.reverse .split-media{order:0;}
  .step-flow{grid-template-columns:repeat(2,1fr);gap:32px;}
  .step-item::before{display:none;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .cta-band{grid-template-columns:1fr;padding:36px 28px;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .nav-inner{height:64px;}
  .page-hero{padding:48px 0 40px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .step-flow{grid-template-columns:1fr;gap:0;}
  .step-item{
    text-align:left;display:grid;grid-template-columns:62px 1fr;gap:18px;
    padding:0 0 28px;position:relative;
  }
  .step-item::before{
    display:block;content:"";position:absolute;left:31px;top:66px;bottom:6px;
    width:2px;height:auto;right:auto;border-top:none;background:var(--c-primary-100);
  }
  .step-item:last-child{padding-bottom:0;}
  .step-item:last-child::before{display:none;}
  .step-node{margin:0;}
  .step-item .step-content{padding-top:6px;}
  .split + .split{margin-top:56px;}
  .related-grid{grid-template-columns:1fr;}
  .notice-strip{flex-direction:column;padding:20px;gap:10px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%;}
  .cta-band{padding:28px 20px;}
  .accordion-button{font-size:15px;padding:16px 46px 16px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
}
.fade-in{animation:fadeUp .3s var(--ease) both;}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:none;}}