/* roulang page: index */
:root{
  --c-ink:#14181A;
  --c-ink-2:#2B3336;
  --c-muted:#66706F;
  --c-paper:#F4F1E9;
  --c-paper-2:#E9E4D8;
  --c-surface:#FBFAF6;
  --c-primary:#123B32;
  --c-primary-hover:#1B5145;
  --c-accent:#C15F3C;
  --c-accent-soft:#F0D9CE;
  --c-dark:#0E1517;
  --c-line:rgba(20,24,26,.14);
  --c-success:#2F6B4F;
  --c-warning:#B07A2A;
  --c-danger:#A33B2E;
  --r-btn:2px;
  --r-card:6px;
  --r-input:3px;
  --shadow-hover:0 12px 32px rgba(14,21,23,.08);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:"IBM Plex Mono",SFMono-Regular,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
  --t:220ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.8;color:var(--c-ink);background:var(--c-paper);-webkit-font-smoothing:antialiased;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;margin:0;line-height:1.22;letter-spacing:.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.16em;color:var(--c-accent);margin-bottom:12px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding-bottom:20px;margin-bottom:40px;border-bottom:1px solid var(--c-line);}
.section-head h2{font-size:clamp(26px,2.8vw,40px);}
.section-sub{margin-top:12px;max-width:640px;font-size:15px;color:var(--c-muted);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;padding-bottom:2px;font-size:14px;font-weight:600;color:var(--c-primary);border-bottom:1px solid rgba(18,59,50,.35);transition:color var(--t) var(--ease),border-color var(--t) var(--ease);}
.link-arrow span{transition:transform var(--t) var(--ease);}
.link-arrow:hover span{transform:translateX(3px);}
.link-arrow:hover{color:var(--c-accent);border-color:var(--c-accent);}

/* 顶部信息条 */
.topbar{background:var(--c-dark);color:rgba(255,255,255,.78);font-size:12.5px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px;}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0;}
.topbar-domain{font-family:var(--font-mono);font-size:12px;letter-spacing:.05em;color:#fff;flex:none;}
.topbar-sep{width:1px;height:12px;background:rgba(255,255,255,.24);flex:none;}
.topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-right{display:flex;align-items:center;gap:18px;flex:none;}
.topbar-right a{transition:color var(--t) var(--ease);}
.topbar-right a:hover{color:var(--c-accent);}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(244,241,233,.88);backdrop-filter:blur(12px);border-bottom:1px solid var(--c-line);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none;}
.logo-mark{position:relative;width:28px;height:28px;flex:none;border:1.5px solid var(--c-primary);border-radius:2px;}
.logo-mark::before{content:"";position:absolute;inset:5px;border:1.5px solid var(--c-accent);border-radius:1px;}
.logo-text{font-family:var(--font-serif);font-size:19px;font-weight:700;letter-spacing:.01em;color:var(--c-ink);white-space:nowrap;}
.logo-latin{font-family:var(--font-mono);font-size:18px;letter-spacing:.02em;}
.logo-cn{font-family:var(--font-serif);}
.nav-panel{display:flex;align-items:center;gap:32px;flex:1;justify-content:flex-end;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--c-ink-2);transition:color var(--t) var(--ease);}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--c-accent);transform:scaleX(0);transform-origin:left;transition:transform 240ms var(--ease);}
.nav-links a:hover{color:var(--c-ink);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--c-ink);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{display:none;align-items:center;justify-content:center;flex-direction:column;gap:5px;width:44px;height:44px;padding:0;background:transparent;border:1px solid var(--c-line);border-radius:2px;cursor:pointer;}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--c-ink);transition:transform var(--t) var(--ease),opacity var(--t) var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}
body.nav-open{overflow:hidden;}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border:1px solid transparent;border-radius:var(--r-btn);font-size:15px;font-weight:600;cursor:pointer;transition:background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease);}
.btn-primary{background:var(--c-primary);color:#F7F4EC;}
.btn-primary:hover{background:var(--c-primary-hover);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--c-ink);color:var(--c-ink);}
.btn-ghost:hover{background:var(--c-ink);color:var(--c-paper);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-outline{height:40px;padding:0 18px;font-size:14px;border:1px solid var(--c-line);background:rgba(255,255,255,.45);color:var(--c-ink-2);}
.btn-outline:hover{border-color:var(--c-primary);color:var(--c-primary);}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;}

/* Hero */
.hero{position:relative;overflow:hidden;padding:72px 0 88px;background:var(--c-paper);}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:repeating-linear-gradient(90deg,rgba(20,24,26,.05) 0 1px,transparent 1px 25%);}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;min-height:600px;}
.hero-copy .eyebrow{animation:fadeUp 520ms var(--ease) both;}
.hero-copy h1{font-size:clamp(34px,4.8vw,60px);line-height:1.12;animation:fadeUp 520ms var(--ease) 60ms both;}
.hero-sub{margin-top:20px;max-width:560px;font-size:17px;line-height:1.85;color:var(--c-ink-2);animation:fadeUp 520ms var(--ease) 120ms both;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;animation:fadeUp 520ms var(--ease) 180ms both;}
.hero-metrics{display:flex;flex-wrap:wrap;margin-top:40px;animation:fadeUp 520ms var(--ease) 240ms both;}
.hero-metrics li{padding:0 22px;border-left:1px solid var(--c-line);}
.hero-metrics li:first-child{padding-left:0;border-left:0;}
.metric-num{display:block;font-family:var(--font-mono);font-size:20px;line-height:1.35;color:var(--c-ink);}
.metric-label{font-size:12px;color:var(--c-muted);}
.hero-media{position:relative;animation:fadeUp 600ms var(--ease) 200ms both;}
.hero-media img{width:100%;aspect-ratio:4/5;object-fit:cover;border:1px solid var(--c-line);border-radius:2px;background:var(--c-paper-2);}
.hero-media::before{content:"";position:absolute;inset:14px -14px -14px 14px;border:1px solid rgba(18,59,50,.4);border-radius:2px;pointer-events:none;}
.hero-media figcaption{margin-top:14px;font-size:12px;color:var(--c-muted);}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:none;}}

/* 服务体系 */
.service-list{border-top:1px solid var(--c-line);}
.service-row{display:grid;grid-template-columns:76px minmax(0,1fr) 40px;gap:24px;align-items:start;padding:28px 12px;border-bottom:1px solid var(--c-line);transition:background var(--t) var(--ease),padding var(--t) var(--ease);}
.service-row:hover{background:var(--c-paper-2);padding-left:20px;}
.service-num{padding-top:6px;font-family:var(--font-mono);font-size:13px;color:var(--c-accent);}
.service-body h3{font-size:21px;margin-bottom:10px;}
.service-body p{max-width:720px;font-size:15px;line-height:1.8;color:var(--c-ink-2);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{display:inline-block;padding:3px 10px;font-size:12px;color:var(--c-muted);background:var(--c-surface);border:1px solid var(--c-line);border-radius:2px;}
.service-arrow{align-self:center;font-size:20px;color:var(--c-muted);transition:transform var(--t) var(--ease),color var(--t) var(--ease);}
.service-row:hover .service-arrow{transform:translateX(4px);color:var(--c-accent);}

/* 数据带 */
.stats{background:var(--c-dark);color:var(--c-paper);padding:64px 0;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:8px 28px;border-left:1px solid rgba(255,255,255,.14);}
.stat:first-child{padding-left:0;border-left:0;}
.stat-num{font-family:var(--font-mono);font-size:clamp(40px,5vw,64px);line-height:1.05;color:#fff;font-variant-numeric:tabular-nums;}
.stat-unit{margin-left:4px;font-family:var(--font-sans);font-size:15px;color:rgba(255,255,255,.72);}
.stat-label{margin-top:8px;font-size:12px;letter-spacing:.06em;color:rgba(255,255,255,.72);}

/* 案例 */
.case-list{display:flex;flex-direction:column;gap:72px;}
.case-row{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.case-row.reverse{grid-template-columns:5fr 7fr;}
.case-row.reverse .case-media{order:2;}
.case-media{overflow:hidden;border-radius:2px;}
.case-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border:1px solid var(--c-line);border-radius:2px;transition:transform 600ms var(--ease),border-color var(--t) var(--ease);}
.case-row:hover .case-media img{transform:scale(1.03);border-color:rgba(20,24,26,.3);}
.case-body h3{margin-top:14px;font-size:24px;}
.case-body p{margin-top:12px;font-size:15px;line-height:1.85;color:var(--c-ink-2);}
.case-body .link-arrow{margin-top:18px;}
.chip{display:inline-block;padding:3px 10px;font-size:12px;font-weight:600;color:var(--c-primary);background:var(--c-accent-soft);border:1px solid rgba(193,95,60,.28);border-radius:2px;}

/* 方案 */
.plan-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.plan-aside{position:sticky;top:96px;}
.plan-aside h2{font-size:clamp(26px,2.8vw,40px);}
.plan-aside p{margin-top:16px;font-size:15px;line-height:1.85;color:var(--c-muted);}
.plan-list{border-top:1px solid var(--c-line);}
.plan-row{position:relative;display:grid;grid-template-columns:48px minmax(0,1fr);gap:16px;padding:26px 16px 26px 20px;border-bottom:1px solid var(--c-line);transition:background var(--t) var(--ease);}
.plan-row::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--c-accent);transform:scaleY(0);transform-origin:top;transition:transform 240ms var(--ease);}
.plan-row:hover{background:var(--c-paper-2);}
.plan-row:hover::before{transform:scaleY(1);}
.plan-num{font-family:var(--font-mono);font-size:13px;color:var(--c-accent);padding-top:4px;}
.plan-name{font-size:19px;font-family:var(--font-serif);font-weight:700;}
.plan-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:14px;font-size:13px;color:var(--c-muted);}
.plan-meta b{display:block;font-size:12px;font-weight:600;color:var(--c-ink-2);margin-bottom:2px;}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:start;}
.news-feature{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;transition:box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);}
.news-feature:hover{box-shadow:var(--shadow-hover);border-color:rgba(20,24,26,.28);}
.news-media{display:block;overflow:hidden;}
.news-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 600ms var(--ease);}
.news-feature:hover .news-media img{transform:scale(1.03);}
.news-feature-body{padding:24px 26px 28px;}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:12px;}
.meta-time{font-family:var(--font-mono);font-size:12px;color:var(--c-muted);}
.news-feature-body h3{font-size:22px;}
.news-feature-body h3 a:hover{color:var(--c-primary);}
.news-feature-body p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--c-ink-2);}
.news-feature-body .link-arrow{margin-top:18px;}
.news-list{display:flex;flex-direction:column;border-top:1px solid var(--c-line);}
.news-item{display:grid;grid-template-columns:96px minmax(0,1fr);gap:16px;padding:18px 0;border-bottom:1px solid var(--c-line);transition:background var(--t) var(--ease);}
.news-item:hover{background:var(--c-paper-2);}
.news-thumb{display:block;overflow:hidden;border-radius:2px;}
.news-thumb img{width:96px;height:72px;object-fit:cover;border:1px solid var(--c-line);border-radius:2px;transition:transform 600ms var(--ease);}
.news-item:hover .news-thumb img{transform:scale(1.04);}
.news-item h3{font-size:17px;line-height:1.45;}
.news-item h3 a:hover{color:var(--c-primary);}
.news-item p{margin-top:6px;font-size:14px;line-height:1.7;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-item .news-meta{margin:8px 0 0;}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;min-height:180px;padding:24px;text-align:center;color:var(--c-muted);background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-card);grid-column:1 / -1;}
.empty-state svg{width:24px;height:24px;fill:none;stroke:var(--c-muted);stroke-width:1.5;}
.empty-state p{font-size:14px;}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-aside h2{font-size:clamp(26px,2.8vw,40px);}
.faq-aside p{margin-top:14px;font-size:15px;line-height:1.85;color:var(--c-muted);max-width:320px;}
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0;font-size:17px;font-weight:600;color:var(--c-ink);cursor:pointer;list-style:none;transition:color var(--t) var(--ease);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--c-primary);}
.faq-icon{position:relative;width:20px;height:20px;flex:none;transition:transform 240ms var(--ease);}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--c-accent);}
.faq-icon::before{left:0;top:9px;width:20px;height:1.5px;}
.faq-icon::after{left:9px;top:0;width:1.5px;height:20px;transition:transform 240ms var(--ease);}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-answer{max-width:640px;padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--c-ink-2);}

/* 联系 */
.contact-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:start;}
.contact-info h2{font-size:clamp(26px,2.8vw,40px);}
.contact-info > p{margin-top:16px;max-width:560px;font-size:15px;line-height:1.85;color:var(--c-ink-2);}
.contact-facts{margin-top:32px;border-top:1px solid var(--c-line);}
.contact-facts li{display:grid;grid-template-columns:120px minmax(0,1fr);gap:16px;padding:14px 0;border-bottom:1px solid var(--c-line);font-size:14px;}
.contact-facts b{font-weight:600;font-size:13px;color:var(--c-muted);}
.contact-facts span{color:var(--c-ink);}
.contact-facts .mono{font-family:var(--font-mono);font-size:13px;}
.contact-points{margin-top:26px;display:flex;flex-direction:column;gap:12px;}
.contact-points li{position:relative;padding-left:18px;font-size:14px;color:var(--c-ink-2);}
.contact-points li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:1.5px;background:var(--c-accent);}
.contact-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;box-shadow:none;transition:box-shadow var(--t) var(--ease);}
.contact-card:hover{box-shadow:var(--shadow-hover);}
.contact-card h3{font-size:20px;}
.contact-card .form-note{margin:8px 0 20px;font-size:13px;color:var(--c-muted);}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:flex;flex-direction:column;gap:6px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;font-weight:600;color:var(--c-ink-2);}
.field label em{font-style:normal;color:var(--c-accent);}
.field input,.field select,.field textarea{width:100%;height:48px;padding:0 14px;font-size:15px;color:var(--c-ink);background:var(--c-paper);border:1px solid var(--c-line);border-radius:var(--r-input);transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease);}
.field textarea{height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px var(--c-accent-soft);}
.field input:invalid:not(:placeholder-shown){border-color:var(--c-danger);}
.field .hint{font-size:12px;color:var(--c-muted);}
.form-actions{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:14px;}
.form-status{grid-column:1 / -1;display:none;padding:10px 14px;font-size:13px;color:var(--c-success);background:rgba(47,107,79,.09);border:1px solid rgba(47,107,79,.3);border-radius:var(--r-input);}
.form-status.is-visible{display:block;}

/* 页脚 */
.site-footer{background:var(--c-dark);color:rgba(255,255,255,.74);padding-top:72px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:40px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand .logo-mark{border-color:rgba(255,255,255,.7);}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.65);max-width:300px;}
.footer-col h4{font-family:var(--font-sans);font-size:13px;font-weight:600;letter-spacing:.1em;color:#fff;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col li{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--t) var(--ease);}
.footer-col a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px;}
.footer-col .mono{font-family:var(--font-mono);font-size:13px;}
.footer-legal p{font-size:12.5px;line-height:1.8;color:rgba(255,255,255,.55);}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.14);padding:20px 0 24px;}
.footer-bottom-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:12.5px;color:rgba(255,255,255,.5);}

/* 滚动显现 */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:64px 0;}
  .nav-toggle{display:inline-flex;}
  .nav-panel{position:fixed;inset:0;z-index:70;display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:8px;padding:88px 24px 32px;background:var(--c-paper);transform:translateX(100%);transition:transform 260ms var(--ease);overflow-y:auto;}
  .nav-panel.is-open{transform:translateX(0);}
  .nav-links{flex-direction:column;align-items:stretch;gap:0;}
  .nav-links a{font-size:18px;padding:16px 0;border-bottom:1px solid var(--c-line);}
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--c-primary);}
  .nav-actions{margin-top:24px;flex-direction:column;align-items:stretch;}
  .nav-actions .btn{width:100%;height:48px;}
  .hero{padding:56px 0 64px;}
  .hero-grid{grid-template-columns:1fr;min-height:0;gap:40px;}
  .hero-sub{max-width:none;}
  .hero-media{max-width:520px;}
  .hero-media img{aspect-ratio:16/10;}
  .hero-metrics{margin-top:32px;}
  .case-row,.case-row.reverse{grid-template-columns:1fr;gap:24px;}
  .case-row.reverse .case-media{order:0;}
  .case-list{gap:56px;}
  .plan-grid,.faq-grid,.contact-grid,.news-grid{grid-template-columns:1fr;gap:32px;}
  .plan-aside{position:static;}
  .stats{padding:48px 0;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .stat{padding:0 20px;border-left:1px solid rgba(255,255,255,.14);}
  .stat:nth-child(odd){padding-left:0;border-left:0;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .footer-brand p{max-width:none;}
}

@media (max-width:639px){
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .topbar-inner{height:32px;}
  .topbar-note,.topbar-time,.topbar-sep{display:none;}
  .nav-inner{height:64px;}
  .logo-text{font-size:15px;}
  .logo-latin{font-size:15px;}
  .logo-mark{width:24px;height:24px;}
  .logo-mark::before{inset:4px;}
  .hero{padding:36px 0 52px;}
  .hero-media::before{display:none;}
  .hero-actions{flex-direction:column;align-items:stretch;margin-top:26px;}
  .hero-actions .btn{width:100%;}
  .hero-metrics{margin-top:28px;}
  .hero-metrics li{padding:0 16px;}
  .metric-num{font-size:18px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px;}
  .service-row{grid-template-columns:40px minmax(0,1fr);gap:12px;padding:22px 8px;}
  .service-row:hover{padding-left:14px;}
  .service-arrow{display:none;}
  .service-body h3{font-size:19px;}
  .news-feature-body{padding:20px;}
  .news-item{grid-template-columns:84px minmax(0,1fr);gap:12px;}
  .news-thumb img{width:84px;height:64px;}
  .plan-meta{grid-template-columns:1fr;gap:10px;}
  .form-grid{grid-template-columns:1fr;}
  .contact-card{padding:20px;}
  .contact-facts li{grid-template-columns:1fr;gap:4px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;}
  .footer-bottom{margin-top:36px;}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start;}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-delay:0ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --c-ink:#14181A;
  --c-ink-2:#2B3336;
  --c-muted:#66706F;
  --c-paper:#F4F1E9;
  --c-paper-2:#E9E4D8;
  --c-surface:#FBFAF6;
  --c-primary:#123B32;
  --c-primary-hover:#1B5145;
  --c-accent:#C15F3C;
  --c-accent-soft:#F0D9CE;
  --c-dark:#0E1517;
  --c-line:rgba(20,24,26,.14);
  --c-success:#2F6B4F;
  --c-warning:#B07A2A;
  --c-danger:#A33B2E;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-mono:"IBM Plex Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --radius-btn:2px;
  --radius-card:6px;
  --radius-input:3px;
  --shadow-hover:0 12px 32px rgba(14,21,23,.08);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-ink);
  background:var(--c-paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
::selection{background:var(--c-accent-soft);color:var(--c-ink)}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.eyebrow{
  display:block;font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--c-accent);margin-bottom:14px;
}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.is-hidden{display:none !important}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(251,250,246,.9);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{position:relative;width:24px;height:24px;border:1.5px solid var(--c-primary);border-radius:2px;flex:none}
.logo-mark::before,.logo-mark::after{
  content:"";position:absolute;left:4px;right:4px;height:1.5px;background:var(--c-primary);
}
.logo-mark::before{top:7px}
.logo-mark::after{bottom:7px}
.logo-text{display:flex;align-items:baseline;gap:6px;line-height:1}
.logo-latin{font-family:var(--font-mono);font-size:17px;font-weight:700;letter-spacing:.01em;color:var(--c-ink)}
.logo-cn{font-family:var(--font-serif);font-size:16px;font-weight:700;color:var(--c-primary)}
.nav-panel{display:flex;align-items:center;gap:36px}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;
  color:var(--c-ink-2);transition:color .22s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--c-accent);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-links a:hover,.nav-links a:focus-visible{color:var(--c-primary)}
.nav-links a:hover::after,.nav-links a:focus-visible::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--c-primary)}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;position:relative;width:44px;height:44px;flex:none;
  background:transparent;border:1px solid var(--c-line);border-radius:2px;cursor:pointer;
  transition:border-color .22s var(--ease);
}
.nav-toggle:hover{border-color:var(--c-primary)}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:1.5px;background:var(--c-ink);
  transition:transform .24s var(--ease),opacity .18s var(--ease);
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn-primary{background:var(--c-primary);color:var(--c-paper);border-color:var(--c-primary)}
.btn-primary:hover{background:var(--c-primary-hover);border-color:var(--c-primary-hover);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--c-line);color:var(--c-ink)}
.btn-outline:hover{background:var(--c-ink);border-color:var(--c-ink);color:var(--c-paper)}
.btn-ghost{background:transparent;border-color:rgba(244,241,233,.34);color:var(--c-paper)}
.btn-ghost:hover{background:rgba(244,241,233,.1);border-color:rgba(244,241,233,.62)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary)}
.link-arrow svg{transition:transform .22s var(--ease)}
.link-arrow:hover svg{transform:translateX(3px)}
.link-arrow:hover{color:var(--c-accent)}

/* ---------- chips ---------- */
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border:1px solid var(--c-line);border-radius:2px;background:var(--c-surface);
  font-size:12px;line-height:1;color:var(--c-ink-2);
  transition:border-color .22s var(--ease),color .22s var(--ease),background .22s var(--ease);
}
a.chip:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-paper-2)}
.chip-solid{background:var(--c-primary);border-color:var(--c-primary);color:var(--c-paper)}
a.chip-solid:hover{background:var(--c-primary-hover);color:var(--c-paper);border-color:var(--c-primary-hover)}

/* ---------- breadcrumb ---------- */
.breadcrumb{padding-top:18px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;font-size:13px;color:var(--c-muted);list-style:none}
.breadcrumb li{display:flex;align-items:center;min-width:0}
.breadcrumb li+li::before{content:"/";margin:0 10px;color:rgba(20,24,26,.28)}
.breadcrumb a{color:var(--c-muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.breadcrumb .current{
  color:var(--c-ink);max-width:52ch;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}

/* ---------- article hero ---------- */
.article-hero{padding-top:32px}
.article-hero-inner{max-width:880px}
.article-hero h1{
  font-family:var(--font-serif);
  font-size:clamp(30px,3.6vw,44px);
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.01em;
  margin-top:20px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px;font-size:13px;color:var(--c-muted)}
.meta-row .dot{width:1px;height:12px;background:var(--c-line);flex:none}
.meta-row .mono{font-size:12px;color:var(--c-ink-2)}
.lead{margin-top:18px;max-width:720px;font-size:17px;line-height:1.85;color:var(--c-ink-2)}
.article-cover{max-width:960px;margin:34px 0 0;padding:0}
.article-cover img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  border:1px solid var(--c-line);border-radius:var(--radius-card);
  background:var(--c-paper-2);
}
.article-cover figcaption{margin-top:10px;font-size:12px;color:var(--c-muted)}

/* ---------- article layout ---------- */
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 248px;
  gap:64px;
  align-items:start;
  padding-top:56px;
  padding-bottom:80px;
}
.article-main{min-width:0;max-width:760px}
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}

.toc-card{border:1px solid var(--c-line);border-radius:var(--radius-card);background:var(--c-surface);padding:20px 18px}
.toc-card h2{
  font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.14em;
  color:var(--c-muted);margin-bottom:14px;
}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:block;padding:6px 0 6px 12px;font-size:13px;line-height:1.6;color:var(--c-muted);
  border-left:2px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.toc-list a:hover{color:var(--c-primary);border-left-color:var(--c-accent-soft);background:var(--c-paper-2)}
.toc-list a.is-current{color:var(--c-ink);border-left-color:var(--c-accent);font-weight:600}
.aside-card{border:1px solid var(--c-line);border-radius:var(--radius-card);background:var(--c-paper-2);padding:22px 18px}
.aside-card h2{font-family:var(--font-serif);font-size:17px;line-height:1.5;margin-bottom:10px}
.aside-card p{font-size:13px;line-height:1.8;color:var(--c-ink-2);margin-bottom:16px}
.aside-card .btn{width:100%}

/* ---------- article body ---------- */
.article-body{font-size:17px;line-height:1.95;color:var(--c-ink-2)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-family:var(--font-serif);
  font-size:clamp(22px,2.4vw,28px);
  line-height:1.35;
  color:var(--c-ink);
  margin:2.2em 0 1em;
  padding-top:20px;
  border-top:1px solid var(--c-line);
  scroll-margin-top:96px;
}
.article-body h3{
  font-family:var(--font-serif);font-size:19px;line-height:1.5;color:var(--c-ink);
  margin:1.8em 0 .7em;scroll-margin-top:96px;
}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--c-accent)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.25em}
.article-body li{margin:.4em 0;line-height:1.85}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;background:var(--c-paper-2);
  border-left:2px solid var(--c-accent);border-radius:2px;color:var(--c-ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:2px;margin:1.6em 0 .6em;width:100%}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:12px;color:var(--c-muted);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.6em 0}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 12px;text-align:left;vertical-align:top}
.article-body th{font-size:13px;font-weight:600;background:var(--c-paper-2);color:var(--c-ink)}
.article-body strong{font-weight:600;color:var(--c-ink)}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:2em 0}
.article-body code{
  font-family:var(--font-mono);font-size:14px;background:var(--c-paper-2);
  padding:1px 5px;border-radius:2px;
}

/* ---------- empty state ---------- */
.article-empty{
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:44px 24px;text-align:center;
  border:1px dashed var(--c-line);border-radius:var(--radius-card);
  color:var(--c-muted);font-size:14px;
}
.article-empty svg{color:var(--c-muted)}
.article-empty strong{font-size:16px;font-weight:600;color:var(--c-ink-2)}
.article-empty .link-arrow{font-size:14px}

/* ---------- article foot ---------- */
.article-foot{margin-top:48px;padding-top:28px;border-top:1px solid var(--c-line)}
.foot-label{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:var(--c-muted);margin-bottom:12px;
}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.back-links{display:flex;flex-wrap:wrap;align-items:center;gap:28px;margin-top:28px}

/* ---------- related ---------- */
.related{margin-top:56px}
.related-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  padding-bottom:16px;border-bottom:1px solid var(--c-line);margin-bottom:22px;
}
.related-head h2{font-family:var(--font-serif);font-size:24px;line-height:1.3}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  border:1px solid var(--c-line);border-radius:var(--radius-card);background:var(--c-surface);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.rel-card:hover{border-color:rgba(20,24,26,.3);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:var(--c-paper-2)}
.rel-body{padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px}
.rel-body h3{font-size:16px;line-height:1.5;font-weight:600}
.rel-body p{
  font-size:13px;line-height:1.7;color:var(--c-muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-body .mono{font-size:11.5px;color:var(--c-accent)}

/* ---------- CTA band ---------- */
.cta-band{padding-bottom:96px}
.cta-inner{
  display:grid;grid-template-columns:1.5fr .9fr;gap:44px;align-items:center;
  background:var(--c-dark);color:var(--c-paper);
  border-radius:var(--radius-card);padding:52px;
  position:relative;overflow:hidden;
}
.cta-inner::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:88px 100%;pointer-events:none;
}
.cta-inner h2{
  font-family:var(--font-serif);font-size:clamp(24px,2.6vw,34px);line-height:1.28;
  color:var(--c-paper);margin-bottom:14px;position:relative;
}
.cta-inner p{font-size:15px;line-height:1.85;color:rgba(244,241,233,.72);max-width:520px;position:relative}
.cta-inner .eyebrow{color:var(--c-accent-soft);position:relative}
.cta-actions{display:flex;flex-direction:column;gap:12px;position:relative}
.cta-actions .btn{width:100%;height:46px}
.cta-note{font-size:12px;color:rgba(244,241,233,.6);margin-top:4px}

/* ---------- footer ---------- */
.site-footer{background:var(--c-dark);color:rgba(244,241,233,.82);padding-top:72px}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.14);
}
.footer-brand .logo-latin{color:var(--c-paper)}
.footer-brand .logo-cn{color:var(--c-paper-2)}
.footer-brand .logo-mark{border-color:rgba(244,241,233,.72)}
.footer-brand .logo-mark::before,.footer-brand .logo-mark::after{background:rgba(244,241,233,.72)}
.footer-brand p{
  margin-top:18px;max-width:320px;font-size:14px;line-height:1.85;color:rgba(244,241,233,.66);
}
.footer-col h4{
  font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.14em;
  color:var(--c-paper);margin-bottom:16px;
}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14px}
.footer-col a{color:rgba(244,241,233,.72);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px}
.footer-col .mono{font-size:13px;color:rgba(244,241,233,.78)}
.footer-legal p{font-size:12.5px;line-height:1.85;color:rgba(244,241,233,.58);margin-bottom:10px}
.footer-bottom{padding:20px 0}
.footer-bottom-inner{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:12.5px;color:rgba(244,241,233,.55);
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .article-grid{gap:48px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-toggle{display:block}
  .nav-panel{
    position:fixed;left:0;right:0;top:72px;bottom:0;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    padding:28px 24px 40px;background:var(--c-paper);border-top:1px solid var(--c-line);
    opacity:0;transform:translateX(100%);pointer-events:none;overflow-y:auto;
    transition:transform .26s var(--ease),opacity .26s var(--ease);
  }
  .nav-panel.is-open{opacity:1;transform:none;pointer-events:auto}
  .nav-links{flex-direction:column;align-items:stretch;gap:0}
  .nav-links a{font-size:18px;padding:16px 0;border-bottom:1px solid var(--c-line)}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--c-primary)}
  .nav-actions{flex-direction:column;align-items:stretch;gap:12px;margin-top:28px}
  .nav-actions .btn{width:100%;height:48px}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:0;padding-top:40px;padding-bottom:64px}
  .article-aside{display:none}
  .article-main{max-width:none}
  .cta-inner{grid-template-columns:1fr;gap:28px;padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding-bottom:72px}
}
@media (max-width:639px){
  .container{padding:0 20px}
  .nav-inner{height:64px}
  .nav-panel{top:64px;padding:20px}
  .logo-latin{font-size:15px}
  .logo-cn{font-size:14px}
  .logo-mark{width:22px;height:22px}
  .logo-mark::before{top:6px}
  .logo-mark::after{bottom:6px}
  .breadcrumb .current{max-width:100%;white-space:normal}
  .article-hero{padding-top:24px}
  .article-hero h1{font-size:27px;line-height:1.32;margin-top:16px}
  .lead{font-size:15.5px}
  .article-cover{margin-top:24px}
  .article-grid{padding-top:32px;padding-bottom:56px}
  .article-body{font-size:16.5px;line-height:1.9}
  .article-body h2{margin-top:1.9em}
  .related-grid{grid-template-columns:1fr}
  .related-head{flex-direction:column;align-items:flex-start;gap:10px}
  .back-links{gap:18px}
  .cta-inner{padding:32px 22px}
  .cta-inner p{font-size:14px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .site-footer{padding-top:52px}
  .footer-bottom-inner{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --c-ink:#14181A;
  --c-ink-2:#2B3336;
  --c-muted:#66706F;
  --c-paper:#F4F1E9;
  --c-paper-2:#E9E4D8;
  --c-surface:#FBFAF6;
  --c-primary:#123B32;
  --c-primary-hover:#1B5145;
  --c-accent:#C15F3C;
  --c-accent-soft:#F0D9CE;
  --c-dark:#0E1517;
  --c-line:rgba(20,24,26,.14);
  --c-line-strong:rgba(20,24,26,.3);
  --c-success:#2F6B4F;
  --c-danger:#A33B2E;
  --ff-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --ff-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --ff-mono:"IBM Plex Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --r-xs:2px;
  --r-sm:3px;
  --r-md:6px;
  --shadow-hover:0 12px 32px rgba(14,21,23,.08);
  --ease:cubic-bezier(.2,.7,.2,1);
  --dur:220ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  background:var(--c-paper);
  color:var(--c-ink);
  font-family:var(--ff-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4{margin:0;font-family:var(--ff-serif);font-weight:700;line-height:1.28;letter-spacing:.005em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
dl,dd,dt{margin:0}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px}
::selection{background:var(--c-accent-soft);color:var(--c-ink)}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.mono{font-family:var(--ff-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--ff-mono);font-size:12px;letter-spacing:.12em;
  color:var(--c-accent);margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--c-accent);flex:none}
.eyebrow--light{color:var(--c-accent-soft)}
.eyebrow--light::before{background:var(--c-accent-soft)}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--c-dark);color:rgba(244,241,233,.72);font-size:12.5px;line-height:1}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:36px}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0}
.topbar-left .mono{color:rgba(244,241,233,.94)}
.topbar-sep{width:1px;height:12px;background:rgba(255,255,255,.2);flex:none}
.topbar-note{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:18px;flex:none}
.topbar-right .mono{color:rgba(244,241,233,.6)}
.topbar-right a{color:rgba(244,241,233,.86);border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.topbar-right a:hover{color:var(--c-accent);border-bottom-color:var(--c-accent)}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(251,250,246,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
}
.nav-inner{display:flex;align-items:center;gap:32px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none;color:var(--c-ink)}
.logo-mark{
  position:relative;width:22px;height:22px;flex:none;
  border:1.5px solid var(--c-primary);border-radius:var(--r-xs);
}
.logo-mark::after{
  content:"";position:absolute;inset:4px;
  border:1.5px solid var(--c-accent);border-radius:1px;
}
.logo-text{display:inline-flex;align-items:baseline;gap:7px;font-size:18px;line-height:1}
.logo-latin{font-family:var(--ff-sans);font-weight:700;letter-spacing:-.01em}
.logo-cn{font-family:var(--ff-serif);font-weight:700;letter-spacing:.02em}
.nav-panel{display:flex;align-items:center;justify-content:space-between;gap:24px;flex:1}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{
  position:relative;display:inline-block;padding:26px 0;
  font-size:15px;font-weight:500;color:var(--c-ink-2);
  transition:color var(--dur) var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;
  background:var(--c-accent);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--c-ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--c-ink);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 10px;margin-left:auto;
  background:transparent;border:1px solid var(--c-line);border-radius:var(--r-xs);
  cursor:pointer;position:relative;z-index:90;
  transition:border-color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--c-line-strong)}
.nav-toggle span{display:block;height:1.5px;background:var(--c-ink);transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--r-xs);
  font-size:14px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease);
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--c-primary);color:var(--c-paper)}
.btn-primary:hover{background:var(--c-primary-hover);transform:translateY(-1px);box-shadow:0 8px 20px rgba(18,59,50,.18)}
.btn-outline{background:transparent;border-color:var(--c-ink);color:var(--c-ink)}
.btn-outline:hover{background:var(--c-ink);color:var(--c-paper);transform:translateY(-1px)}
.btn-accent{background:var(--c-accent);color:#FBFAF6}
.btn-accent:hover{background:#A94F2F;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:rgba(244,241,233,.4);color:rgba(244,241,233,.92)}
.btn-ghost:hover{border-color:var(--c-paper);background:rgba(244,241,233,.08);transform:translateY(-1px)}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--c-primary);
  transition:color var(--dur) var(--ease);
}
.text-link span{transition:transform var(--dur) var(--ease)}
.text-link:hover{color:var(--c-accent)}
.text-link:hover span{transform:translateX(3px)}

/* ============ 面包屑 ============ */
.crumbs{padding:16px 0;font-size:13px;color:var(--c-muted)}
.crumbs-inner{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs a{color:var(--c-muted);transition:color var(--dur) var(--ease)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .sep{color:rgba(20,24,26,.28)}
.crumbs .current{color:var(--c-ink)}

/* ============ 页头 ============ */
.page-head{
  position:relative;overflow:hidden;
  padding:48px 0 64px;
  border-bottom:1px solid var(--c-line);
}
.page-head::before{
  content:"";position:absolute;left:32px;top:0;bottom:0;width:1px;background:rgba(20,24,26,.06);
}
.page-head-grid{
  display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:end;
  min-height:300px;
}
.page-head-main{grid-column:span 7}
.page-head-meta{grid-column:span 5}
.page-head h1{font-size:clamp(30px,3.9vw,46px);line-height:1.18}
.page-head h1 .brand{color:var(--c-primary)}
.page-lead{
  margin-top:18px;max-width:560px;
  font-size:16px;line-height:1.85;color:var(--c-ink-2);
}
.page-head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.meta-list{border-top:1px solid var(--c-line)}
.meta-row{
  display:grid;grid-template-columns:100px 1fr;gap:16px;align-items:baseline;
  padding:16px 0;border-bottom:1px solid var(--c-line);
}
.meta-row dt{font-family:var(--ff-mono);font-size:12px;letter-spacing:.06em;color:var(--c-muted)}
.meta-row dd{font-size:15px;color:var(--c-ink-2);line-height:1.7}
.meta-row dd .num{font-family:var(--ff-mono);color:var(--c-primary);font-weight:600}

/* ============ 筛选条 ============ */
.filter-bar{
  display:flex;gap:10px;align-items:center;
  padding:22px 0;border-bottom:1px solid var(--c-line);
  overflow-x:auto;scrollbar-width:none;
}
.filter-bar::-webkit-scrollbar{display:none}
.chip{
  flex:none;display:inline-flex;align-items:center;height:32px;padding:0 12px;
  border:1px solid var(--c-line);border-radius:var(--r-xs);
  background:var(--c-surface);color:var(--c-ink-2);
  font-size:12px;letter-spacing:.02em;cursor:pointer;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary)}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:var(--c-paper)}
.filter-hint{margin-left:auto;flex:none;font-size:12px;color:var(--c-muted);font-family:var(--ff-mono)}

/* ============ 内容区 ============ */
.content-wrap{
  display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:48px;padding:56px 0 88px;align-items:start;
}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
.svc-card{
  display:flex;flex-direction:column;
  border:1px solid var(--c-line);border-radius:var(--r-md);
  background:var(--c-surface);overflow:hidden;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.svc-card:hover{border-color:var(--c-line-strong);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.svc-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--c-paper-2)}
.svc-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.svc-card:hover .svc-thumb img{transform:scale(1.03)}
.svc-body{padding:22px;display:flex;flex-direction:column;flex:1}
.tag{
  display:inline-flex;align-items:center;align-self:flex-start;
  height:24px;padding:0 10px;border-radius:var(--r-xs);
  background:var(--c-accent-soft);color:#8A3E23;
  font-size:12px;font-weight:500;letter-spacing:.02em;
}
.svc-body h3{margin-top:12px;font-size:19px;line-height:1.4}
.svc-body p{margin-top:10px;font-size:14.5px;line-height:1.78;color:var(--c-muted)}
.svc-body .text-link{margin-top:auto;padding-top:18px}

/* ============ 侧栏 ============ */
.side-panel{
  position:sticky;top:96px;align-self:start;
  display:flex;flex-direction:column;gap:24px;
}
.side-card{
  border:1px solid var(--c-line);border-radius:var(--r-md);
  background:var(--c-surface);padding:24px;
}
.side-card h2,.side-card h3{margin:0 0 16px;font-size:16px;line-height:1.4}
.point-list li{
  display:flex;gap:12px;padding:12px 0;
  border-bottom:1px dashed var(--c-line);
  font-size:14px;line-height:1.72;color:var(--c-ink-2);
}
.point-list li:first-child{padding-top:0}
.point-list li:last-child{border-bottom:0;padding-bottom:0}
.point-list .idx{flex:none;font-family:var(--ff-mono);font-size:12px;color:var(--c-accent);padding-top:3px}
.side-links li{padding:9px 0;border-bottom:1px solid var(--c-line);font-size:14px}
.side-links li:last-child{border-bottom:0;padding-bottom:0}
.side-links a{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--c-ink-2);transition:color var(--dur) var(--ease)}
.side-links a .arrow{font-family:var(--ff-mono);font-size:13px;color:var(--c-muted);transition:transform var(--dur) var(--ease),color var(--dur) var(--ease)}
.side-links a:hover{color:var(--c-primary)}
.side-links a:hover .arrow{color:var(--c-accent);transform:translateX(3px)}
.side-cta{
  border-radius:var(--r-md);background:var(--c-dark);
  padding:24px;color:rgba(244,241,233,.74);
}
.side-cta h3{color:var(--c-paper);margin:0 0 10px;font-size:17px}
.side-cta p{font-size:13.5px;line-height:1.8}
.side-cta .btn{width:100%;margin-top:18px}

/* ============ 板块头 ============ */
.section-head{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:end;
  padding-bottom:20px;border-bottom:1px solid var(--c-line);margin-bottom:44px;
}
.section-head h2{font-size:clamp(24px,2.7vw,34px);line-height:1.24}
.section-head .eyebrow{margin-bottom:12px}
.section-note{max-width:340px;font-size:14px;line-height:1.8;color:var(--c-muted)}

/* ============ 流程 ============ */
.process{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.step{
  border-top:1px solid var(--c-line);padding-top:22px;
  transition:border-color var(--dur) var(--ease);
}
.step:hover{border-top-color:var(--c-accent)}
.step .num{
  display:block;font-family:var(--ff-mono);font-size:13px;
  color:var(--c-accent);letter-spacing:.08em;margin-bottom:12px;
}
.step h3{font-size:17px;line-height:1.4}
.step p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--c-muted)}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start}
.faq-intro h2{font-size:clamp(24px,2.7vw,34px);line-height:1.24}
.faq-intro p{margin-top:16px;max-width:320px;font-size:15px;line-height:1.85;color:var(--c-muted)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:first-child{border-top:1px solid var(--c-line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;font-size:17px;font-weight:600;line-height:1.5;
  cursor:pointer;list-style:none;
  transition:color var(--dur) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--c-primary)}
.faq-item summary .plus{
  position:relative;width:20px;height:20px;flex:none;color:var(--c-accent);
  transition:transform var(--dur) var(--ease);
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;transform:translate(-50%,-50%);
}
.faq-item summary .plus::before{width:14px;height:1.5px}
.faq-item summary .plus::after{width:1.5px;height:14px}
.faq-item[open] summary .plus{transform:rotate(45deg)}
.faq-answer{padding:0 0 22px;max-width:660px;font-size:15px;line-height:1.85;color:var(--c-ink-2)}

/* ============ 底部 CTA ============ */
.cta-band{background:var(--c-dark);color:rgba(244,241,233,.76);padding:64px 0}
.cta-inner{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:40px;align-items:center}
.cta-inner h2{color:var(--c-paper);font-size:clamp(24px,2.7vw,34px);line-height:1.26}
.cta-inner p{margin-top:14px;max-width:520px;font-size:15px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:rgba(244,241,233,.7);padding-top:64px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.5fr;gap:40px;padding-bottom:56px}
.site-footer .logo{color:var(--c-paper)}
.site-footer .logo-mark{border-color:rgba(244,241,233,.8)}
.site-footer .logo-mark::after{border-color:var(--c-accent)}
.footer-brand p{margin-top:16px;max-width:320px;font-size:13.5px;line-height:1.85;color:rgba(244,241,233,.6)}
.footer-col h4{
  margin:0 0 16px;font-family:var(--ff-mono);font-size:12.5px;font-weight:500;
  letter-spacing:.1em;color:rgba(244,241,233,.5);
}
.footer-col ul li{padding:6px 0;font-size:14px;color:rgba(244,241,233,.72);line-height:1.7}
.footer-col ul li a{transition:color var(--dur) var(--ease)}
.footer-col ul li a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px}
.footer-legal p{font-size:12.5px;line-height:1.8;color:rgba(244,241,233,.48);margin-bottom:10px}
.footer-legal p:last-child{margin-bottom:0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:20px 0 28px}
.footer-bottom-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:12.5px;color:rgba(244,241,233,.44)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-toggle{display:flex}
  .nav-panel{
    position:fixed;inset:0;z-index:70;
    display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;padding:96px 24px 32px;
    background:var(--c-paper);overflow-y:auto;
    opacity:0;transform:translateX(100%);pointer-events:none;
    transition:transform .26s var(--ease),opacity .26s var(--ease);
  }
  .nav-panel.is-open{opacity:1;transform:none;pointer-events:auto}
  .nav-links{flex-direction:column;align-items:stretch;gap:0}
  .nav-links a{
    font-size:18px;padding:18px 0;border-bottom:1px solid var(--c-line);
  }
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--c-primary)}
  .nav-actions{flex-direction:column;align-items:stretch;gap:12px;margin-top:auto;padding-top:32px}
  .nav-actions .btn{width:100%;height:46px}
  .page-head{padding:40px 0 48px}
  .page-head::before{display:none}
  .page-head-grid{grid-template-columns:1fr;gap:32px;min-height:0;align-items:start}
  .page-head-main,.page-head-meta{grid-column:1/-1}
  .content-wrap{grid-template-columns:1fr;gap:40px;padding:40px 0 64px}
  .side-panel{
    position:static;max-width:none;
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;
  }
  .side-cta{grid-column:1/-1}
  .process{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-intro p{max-width:100%}
  .section{padding:64px 0}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}
}
@media (max-width:767px){
  .section-head{grid-template-columns:1fr;gap:16px;margin-bottom:32px}
  .section-note{max-width:100%}
}
@media (max-width:639px){
  .container{padding:0 20px}
  .topbar{font-size:11.5px}
  .topbar-note,.topbar-sep{display:none}
  .topbar-right .mono{display:none}
  .nav-inner{height:64px;gap:16px}
  .logo-text{font-size:15px;gap:5px}
  .logo-mark{width:20px;height:20px}
  .page-head h1{font-size:clamp(26px,7.6vw,34px)}
  .page-lead{font-size:15px}
  .page-head-actions{flex-direction:column;align-items:stretch}
  .page-head-actions .btn{width:100%}
  .filter-hint{display:none}
  .card-grid{grid-template-columns:1fr;gap:20px}
  .side-panel{grid-template-columns:1fr}
  .process{grid-template-columns:1fr;gap:24px}
  .section{padding:48px 0}
  .faq-item summary{font-size:16px;padding:18px 0}
  .cta-band{padding:48px 0}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px}
  .site-footer{padding-top:48px}
  .footer-bottom-inner{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category2 */
:root{
    --c-ink:#14181A;
    --c-ink-2:#2B3336;
    --c-muted:#66706F;
    --c-paper:#F4F1E9;
    --c-paper-2:#E9E4D8;
    --c-surface:#FBFAF6;
    --c-primary:#123B32;
    --c-primary-hover:#1B5145;
    --c-accent:#C15F3C;
    --c-accent-soft:#F0D9CE;
    --c-dark:#0E1517;
    --c-line:rgba(20,24,26,.14);
    --c-success:#2F6B4F;
    --c-warning:#B07A2A;
    --c-danger:#A33B2E;
    --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
    --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
    --font-mono:"IBM Plex Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
    --r-btn:2px;
    --r-card:6px;
    --r-input:3px;
    --r-img:2px;
    --shadow-hover:0 12px 32px rgba(14,21,23,.08);
    --ease:cubic-bezier(.2,.7,.2,1);
    --container:1240px;
    --gutter:32px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    font-family:var(--font-sans);
    font-size:16px;
    line-height:1.8;
    color:var(--c-ink);
    background:var(--c-paper);
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background-image:linear-gradient(90deg,rgba(20,24,26,.05) 1px,transparent 1px);
    background-size:25% 100%;
    opacity:.5;
  }
  img{max-width:100%;display:block;border-style:none}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit}
  h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:700;line-height:1.22;letter-spacing:.01em}
  p{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:2px}
  .mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

  .container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding:0 var(--gutter);
    position:relative;
    z-index:1;
  }

  /* ---------- 站点头部 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:80;
    background:rgba(251,250,246,.88);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--c-line);
  }
  .nav-inner{
    display:flex;
    align-items:center;
    gap:28px;
    height:72px;
  }
  .logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    flex:0 0 auto;
  }
  .logo-mark{
    width:24px;
    height:24px;
    border:1.5px solid var(--c-primary);
    border-radius:2px;
    position:relative;
    flex:0 0 auto;
    transition:border-color .2s var(--ease);
  }
  .logo-mark::before{
    content:"";
    position:absolute;
    left:5px;top:4px;
    width:9px;height:5px;
    border:1.5px solid var(--c-accent);
    border-radius:1px;
  }
  .logo-mark::after{
    content:"";
    position:absolute;
    left:5px;bottom:4px;
    width:9px;height:5px;
    border:1.5px solid var(--c-primary);
    border-radius:1px;
  }
  .logo-text{
    display:inline-flex;
    align-items:baseline;
    gap:6px;
    font-family:var(--font-serif);
    white-space:nowrap;
  }
  .logo-latin{
    font-size:19px;
    font-weight:700;
    letter-spacing:.02em;
    color:var(--c-primary);
    line-height:1;
  }
  .logo-cn{
    font-size:15px;
    font-weight:600;
    letter-spacing:.06em;
    color:var(--c-ink);
    line-height:1;
  }
  .nav-toggle{
    display:none;
    width:44px;height:44px;
    padding:0;
    border:1px solid var(--c-line);
    border-radius:2px;
    background:transparent;
    cursor:pointer;
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:4px;
    margin-left:auto;
    transition:border-color .2s var(--ease),background .2s var(--ease);
  }
  .nav-toggle:hover{border-color:var(--c-primary)}
  .nav-toggle span{
    display:block;
    width:18px;height:1.5px;
    background:var(--c-ink);
    transition:transform .22s var(--ease),opacity .22s var(--ease);
  }
  .nav-open .nav-toggle span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
  .nav-open .nav-toggle span:nth-child(2){opacity:0}
  .nav-open .nav-toggle span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

  .nav-panel{
    display:flex;
    align-items:center;
    justify-content:space-between;
    flex:1 1 auto;
    gap:24px;
    min-width:0;
  }
  .nav-links{display:flex;align-items:center;gap:30px}
  .nav-links a{
    position:relative;
    display:inline-block;
    padding:6px 0;
    font-size:15px;
    font-weight:500;
    color:var(--c-ink-2);
    transition:color .2s var(--ease);
  }
  .nav-links a::after{
    content:"";
    position:absolute;
    left:0;bottom:0;
    width:100%;height:2px;
    background:var(--c-accent);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .24s var(--ease);
  }
  .nav-links a:hover{color:var(--c-primary)}
  .nav-links a:hover::after{transform:scaleX(1)}
  .nav-links a.is-active{color:var(--c-primary)}
  .nav-links a.is-active::after{transform:scaleX(1)}
  .nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:42px;
    padding:0 20px;
    font-family:var(--font-sans);
    font-size:14px;
    font-weight:600;
    line-height:1;
    border-radius:var(--r-btn);
    border:1px solid transparent;
    cursor:pointer;
    white-space:nowrap;
    transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
  }
  .btn:hover{transform:translateY(-1px)}
  .btn:active{transform:translateY(0)}
  .btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
  .btn-primary{background:var(--c-primary);color:var(--c-paper)}
  .btn-primary:hover{background:var(--c-primary-hover);box-shadow:var(--shadow-hover)}
  .btn-outline{border-color:var(--c-ink);color:var(--c-ink);background:transparent}
  .btn-outline:hover{background:var(--c-ink);color:var(--c-paper)}
  .btn-light{background:var(--c-paper);color:var(--c-primary)}
  .btn-light:hover{background:#fff}
  .btn-ghost-light{border-color:rgba(244,241,233,.5);color:var(--c-paper);background:transparent}
  .btn-ghost-light:hover{background:rgba(244,241,233,.12);border-color:var(--c-paper)}
  .btn-sm{height:36px;padding:0 16px;font-size:13px}
  .btn-block{width:100%}

  .text-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    font-weight:600;
    color:var(--c-primary);
    border-bottom:1px solid var(--c-line);
    padding-bottom:2px;
    transition:color .2s var(--ease),border-color .2s var(--ease);
  }
  .text-link .arrow{transition:transform .2s var(--ease)}
  .text-link:hover{color:var(--c-accent);border-color:var(--c-accent)}
  .text-link:hover .arrow{transform:translateX(3px)}

  /* ---------- 面包屑 ---------- */
  .breadcrumb{padding:16px 0;font-size:13px;color:var(--c-muted)}
  .breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
  .breadcrumb li{display:flex;align-items:center;gap:8px}
  .breadcrumb li+li::before{content:"/";color:rgba(20,24,26,.28)}
  .breadcrumb a{transition:color .2s var(--ease)}
  .breadcrumb a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
  .breadcrumb [aria-current="page"]{color:var(--c-ink)}

  /* ---------- 页头 ---------- */
  .page-hero{
    padding:16px 0 56px;
    border-bottom:1px solid var(--c-line);
    position:relative;
    overflow:hidden;
  }
  .page-hero-inner{
    display:grid;
    grid-template-columns:minmax(0,7fr) minmax(0,5fr);
    gap:56px;
    align-items:end;
  }
  .page-hero-main{position:relative;padding-top:8px}
  .hero-index{
    position:absolute;
    left:-6px;
    top:-40px;
    font-family:var(--font-mono);
    font-size:72px;
    line-height:1;
    font-weight:700;
    letter-spacing:-.02em;
    color:rgba(20,24,26,.08);
    pointer-events:none;
    user-select:none;
  }
  .eyebrow{
    display:block;
    margin-bottom:12px;
    font-family:var(--font-mono);
    font-size:12px;
    letter-spacing:.18em;
    text-transform:uppercase;
    color:var(--c-accent);
  }
  .page-hero h1{
    position:relative;
    font-size:clamp(28px,4vw,46px);
    line-height:1.18;
    color:var(--c-ink);
    max-width:16em;
  }
  .page-hero-lead{
    font-size:15px;
    line-height:1.9;
    color:var(--c-ink-2);
    max-width:34em;
    padding-left:24px;
    border-left:2px solid var(--c-accent);
  }
  .meta-strip{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:0;
    margin-top:44px;
    padding-top:22px;
    border-top:1px solid var(--c-line);
  }
  .meta-strip > div{
    padding:0 24px;
    border-left:1px solid var(--c-line);
  }
  .meta-strip > div:first-child{padding-left:0;border-left:0}
  .meta-strip strong{
    display:block;
    margin-bottom:6px;
    font-family:var(--font-mono);
    font-size:12px;
    font-weight:600;
    letter-spacing:.1em;
    color:var(--c-ink);
  }
  .meta-strip span{font-size:13.5px;line-height:1.7;color:var(--c-muted)}

  /* ---------- 通用板块 ---------- */
  .section{padding:72px 0}
  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:24px;
    padding-bottom:18px;
    border-bottom:1px solid var(--c-line);
    margin-bottom:32px;
  }
  .section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.2}
  .section-head p{margin-top:10px;font-size:14.5px;color:var(--c-muted);max-width:44em}

  /* ---------- 主内容布局 ---------- */
  .layout-8-4{
    display:grid;
    grid-template-columns:minmax(0,1fr) 320px;
    gap:56px;
    align-items:start;
  }

  /* ---------- 列表行 ---------- */
  .case-rows{border-top:1px solid var(--c-line)}
  .case-row{
    display:grid;
    grid-template-columns:120px minmax(0,1fr);
    gap:22px;
    align-items:start;
    min-height:120px;
    padding:20px 16px;
    border-bottom:1px solid var(--c-line);
    transition:background .22s var(--ease),padding .22s var(--ease);
  }
  .case-row:hover{background:var(--c-paper-2);padding-left:22px}
  .case-thumb{
    width:120px;
    height:80px;
    object-fit:cover;
    border-radius:var(--r-img);
    background:var(--c-paper-2);
    border:1px solid var(--c-line);
    transition:transform .4s var(--ease),border-color .22s var(--ease);
  }
  .case-row:hover .case-thumb{border-color:rgba(20,24,26,.28)}
  .case-body{min-width:0}
  .case-title{
    display:block;
    font-family:var(--font-serif);
    font-size:18px;
    font-weight:700;
    line-height:1.45;
    color:var(--c-ink);
    transition:color .2s var(--ease);
  }
  .case-row:hover .case-title{color:var(--c-primary)}
  .case-excerpt{
    margin-top:6px;
    font-size:14px;
    line-height:1.75;
    color:var(--c-muted);
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .case-meta{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:12px;
    margin-top:10px;
    font-size:12px;
    color:var(--c-muted);
  }
  .case-meta .tag{
    display:inline-flex;
    align-items:center;
    padding:2px 8px;
    font-size:12px;
    line-height:1.6;
    color:var(--c-primary);
    background:var(--c-accent-soft);
    border-radius:2px;
  }
  .case-meta time{font-family:var(--font-mono);font-size:12px;letter-spacing:.02em}

  .pager{
    display:flex;
    align-items:center;
    gap:8px;
    margin-top:32px;
  }
  .pager a,
  .pager span{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:40px;height:40px;
    font-family:var(--font-mono);
    font-size:13px;
    border:1px solid var(--c-line);
    border-radius:2px;
    color:var(--c-ink-2);
    background:var(--c-surface);
    transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
  }
  .pager a:hover{border-color:var(--c-primary);color:var(--c-primary)}
  .pager .is-current{background:var(--c-ink);border-color:var(--c-ink);color:var(--c-paper);font-weight:600}
  .pager .is-disabled{opacity:.45;cursor:not-allowed}

  /* ---------- 侧栏 ---------- */
  .sidebar{
    position:sticky;
    top:96px;
    display:flex;
    flex-direction:column;
    gap:24px;
  }
  .side-card{
    padding:22px;
    background:var(--c-surface);
    border:1px solid var(--c-line);
    border-radius:var(--r-card);
  }
  .side-card h3{
    margin-bottom:14px;
    font-family:var(--font-sans);
    font-size:14px;
    font-weight:700;
    letter-spacing:.04em;
    color:var(--c-ink);
  }
  .chips{display:flex;flex-wrap:wrap;gap:8px}
  .chip{
    display:inline-flex;
    align-items:center;
    padding:4px 10px;
    font-size:12px;
    line-height:1.6;
    color:var(--c-ink-2);
    border:1px solid var(--c-line);
    border-radius:2px;
    background:transparent;
    transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
  }
  .chip:hover{background:var(--c-paper-2);border-color:var(--c-primary);color:var(--c-primary)}
  .chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:var(--c-paper)}
  .rec-list li+li{border-top:1px solid var(--c-line)}
  .rec-list a{
    display:block;
    padding:12px 0;
    font-size:14px;
    line-height:1.65;
    color:var(--c-ink-2);
    transition:color .2s var(--ease),padding-left .2s var(--ease);
  }
  .rec-list a:hover{color:var(--c-accent);padding-left:4px}
  .rec-list span{
    display:block;
    margin-top:4px;
    font-family:var(--font-mono);
    font-size:11px;
    letter-spacing:.04em;
    color:var(--c-muted);
  }
  .side-card.cta-card{
    background:var(--c-primary);
    border-color:var(--c-primary);
    color:var(--c-paper);
  }
  .cta-card h3{color:var(--c-paper);margin-bottom:10px}
  .cta-card p{
    font-size:13.5px;
    line-height:1.8;
    color:rgba(244,241,233,.78);
    margin-bottom:16px;
  }
  .cta-card .btn{width:100%;background:var(--c-paper);color:var(--c-primary)}
  .cta-card .btn:hover{background:#fff}

  /* ---------- 查阅说明带 ---------- */
  .notes-band{
    background:var(--c-dark);
    color:var(--c-paper);
    padding:64px 0;
  }
  .notes-band .section-head{
    border-color:rgba(255,255,255,.14);
    margin-bottom:36px;
  }
  .notes-band .section-head h2{color:var(--c-paper)}
  .notes-band .section-head p{color:rgba(244,241,233,.66)}
  .notes-band .eyebrow{color:var(--c-accent)}
  .notes-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:0;
  }
  .notes-grid > div{
    padding:0 32px;
    border-left:1px solid rgba(255,255,255,.14);
  }
  .notes-grid > div:first-child{padding-left:0;border-left:0}
  .notes-grid .num{
    display:block;
    margin-bottom:12px;
    font-family:var(--font-mono);
    font-size:13px;
    letter-spacing:.12em;
    color:var(--c-accent);
  }
  .notes-grid h3{
    font-size:19px;
    margin-bottom:10px;
    color:var(--c-paper);
  }
  .notes-grid p{
    font-size:14px;
    line-height:1.85;
    color:rgba(244,241,233,.7);
  }

  /* ---------- FAQ ---------- */
  .faq{
    display:grid;
    grid-template-columns:minmax(0,4fr) minmax(0,8fr);
    gap:56px;
    align-items:start;
  }
  .faq-aside h2{font-size:clamp(24px,2.6vw,34px);line-height:1.22}
  .faq-aside p{
    margin-top:14px;
    font-size:14.5px;
    line-height:1.9;
    color:var(--c-muted);
    max-width:22em;
  }
  .faq-item{border-bottom:1px solid var(--c-line)}
  .faq-item summary{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:20px 0;
    font-size:17px;
    font-weight:600;
    line-height:1.6;
    color:var(--c-ink);
    cursor:pointer;
    list-style:none;
    transition:color .2s var(--ease);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::marker{content:""}
  .faq-item summary:hover{color:var(--c-primary)}
  .faq-icon{
    flex:0 0 auto;
    font-family:var(--font-mono);
    font-size:20px;
    line-height:1;
    color:var(--c-accent);
    transition:transform .24s var(--ease);
  }
  .faq-item[open] .faq-icon{transform:rotate(45deg)}
  .faq-answer{
    padding-bottom:20px;
    max-width:640px;
    font-size:15px;
    line-height:1.8;
    color:var(--c-ink-2);
    animation:faqIn .22s var(--ease);
  }
  @keyframes faqIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

  /* ---------- 底部 CTA ---------- */
  .cta-band{
    position:relative;
    background:var(--c-dark);
    color:var(--c-paper);
    overflow:hidden;
  }
  .cta-band::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:url("/assets/images/backpic/back-2.png");
    background-position:center;
    background-size:cover;
    background-repeat:no-repeat;
    opacity:.22;
    pointer-events:none;
  }
  .cta-inner{
    position:relative;
    display:grid;
    grid-template-columns:minmax(0,7fr) minmax(0,5fr);
    gap:48px;
    align-items:center;
    padding:72px 0;
  }
  .cta-inner h2{
    font-size:clamp(26px,3vw,38px);
    line-height:1.22;
    color:var(--c-paper);
    max-width:14em;
  }
  .cta-inner p{
    margin-top:14px;
    font-size:15px;
    line-height:1.9;
    color:rgba(244,241,233,.74);
    max-width:34em;
  }
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--c-dark);
    color:rgba(244,241,233,.78);
    padding-top:64px;
    font-size:14px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr .8fr 1fr 1.2fr;
    gap:40px;
    padding-bottom:48px;
  }
  .footer-brand .logo-latin{color:var(--c-paper)}
  .footer-brand .logo-cn{color:var(--c-paper)}
  .footer-brand .logo-mark{border-color:rgba(244,241,233,.85)}
  .footer-brand .logo-mark::after{border-color:rgba(244,241,233,.85)}
  .footer-brand p{
    margin-top:16px;
    font-size:13.5px;
    line-height:1.85;
    color:rgba(244,241,233,.66);
    max-width:320px;
  }
  .footer-col h4{
    margin-bottom:16px;
    font-family:var(--font-sans);
    font-size:13px;
    font-weight:600;
    letter-spacing:.08em;
    color:var(--c-paper);
  }
  .footer-col li{
    margin-bottom:10px;
    font-size:13.5px;
    line-height:1.7;
    color:rgba(244,241,233,.7);
  }
  .footer-col a{transition:color .2s var(--ease)}
  .footer-col a:hover{
    color:var(--c-accent);
    text-decoration:underline;
    text-underline-offset:3px;
  }
  .footer-legal p{
    font-size:12.5px;
    line-height:1.85;
    color:rgba(244,241,233,.55);
    margin-bottom:10px;
  }
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.14);
    padding:20px 0;
  }
  .footer-bottom-inner{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:12px;
    font-size:12.5px;
    color:rgba(244,241,233,.55);
  }

  /* ---------- 动效 ---------- */
  html.js [data-reveal]{
    opacity:0;
    transform:translateY(16px);
    transition:opacity .5s var(--ease),transform .5s var(--ease);
  }
  html.js [data-reveal].is-visible{
    opacity:1;
    transform:none;
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    :root{--gutter:32px}
    .section{padding:72px 0}
  }

  @media (max-width:1023px){
    :root{--gutter:24px}
    .nav-inner{height:72px}
    .nav-toggle{display:flex}
    .nav-panel{
      position:fixed;
      left:0;right:0;
      top:72px;bottom:0;
      flex-direction:column;
      align-items:stretch;
      justify-content:flex-start;
      gap:8px;
      padding:28px 24px 40px;
      background:var(--c-paper);
      border-top:1px solid var(--c-line);
      overflow-y:auto;
      transform:translateX(10%);
      opacity:0;
      visibility:hidden;
      pointer-events:none;
      transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease);
    }
    .site-header.nav-open .nav-panel{
      transform:none;
      opacity:1;
      visibility:visible;
      pointer-events:auto;
    }
    .nav-links{flex-direction:column;align-items:stretch;gap:0}
    .nav-links a{
      font-size:18px;
      padding:16px 0;
      border-bottom:1px solid var(--c-line);
    }
    .nav-links a::after{display:none}
    .nav-links a.is-active{color:var(--c-accent)}
    .nav-actions{flex-direction:column;align-items:stretch;gap:12px;margin-top:24px}
    .nav-actions .btn{width:100%;height:48px}

    .page-hero-inner{grid-template-columns:minmax(0,1fr);gap:28px;align-items:start}
    .page-hero-lead{padding-left:20px;max-width:none}
    .hero-index{font-size:56px;top:-26px}
    .meta-strip{grid-template-columns:minmax(0,1fr);gap:0;margin-top:32px}
    .meta-strip > div{
      padding:14px 0;
      border-left:0;
      border-top:1px solid var(--c-line);
    }
    .meta-strip > div:first-child{border-top:0;padding-top:0}

    .layout-8-4{grid-template-columns:minmax(0,1fr);gap:40px}
    .sidebar{position:static;top:auto}
    .faq{grid-template-columns:minmax(0,1fr);gap:28px}
    .faq-aside p{max-width:none}
    .notes-band{padding:56px 0}
    .notes-grid{grid-template-columns:minmax(0,1fr);gap:0}
    .notes-grid > div{
      padding:22px 0;
      border-left:0;
      border-top:1px solid rgba(255,255,255,.14);
    }
    .notes-grid > div:first-child{border-top:0;padding-top:0}
    .cta-inner{grid-template-columns:minmax(0,1fr);gap:28px;padding:56px 0}
    .cta-actions{justify-content:flex-start}
    .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
    .footer-brand p{max-width:none}
  }

  @media (max-width:639px){
    :root{--gutter:20px}
    body{font-size:15.5px}
    .nav-inner{height:64px}
    .logo-latin{font-size:17px}
    .logo-cn{font-size:13.5px}
    .logo-mark{width:22px;height:22px}
    .nav-panel{top:64px}
    .page-hero{padding:8px 0 40px}
    .page-hero h1{font-size:clamp(26px,7vw,32px);line-height:1.24}
    .hero-index{font-size:44px;top:-18px;left:-2px}
    .page-hero-lead{font-size:14.5px;padding-left:16px}
    .section{padding:48px 0}
    .section-head{flex-direction:column;align-items:flex-start;gap:12px}
    .case-row{
      grid-template-columns:minmax(0,1fr);
      gap:14px;
      padding:18px 0;
      min-height:0;
    }
    .case-row:hover{padding-left:0}
    .case-thumb{width:100%;height:auto;aspect-ratio:16/10}
    .case-title{font-size:17px}
    .case-excerpt{font-size:13.5px;-webkit-line-clamp:3}
    .pager{margin-top:24px}
    .pager a,.pager span{width:36px;height:36px;font-size:12px}
    .side-card{padding:18px}
    .notes-band{padding:44px 0}
    .notes-grid h3{font-size:17px}
    .faq-item summary{font-size:16px;padding:18px 0}
    .faq-answer{font-size:14.5px}
    .cta-actions{flex-direction:column;align-items:stretch}
    .cta-actions .btn{width:100%;height:46px}
    .site-footer{padding-top:48px}
    .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:32px}
    .footer-bottom-inner{flex-direction:column;gap:8px}
  }

  @media (prefers-reduced-motion:reduce){
    *,
    *::before,
    *::after{
      animation-duration:.001ms !important;
      animation-iteration-count:1 !important;
      transition-duration:.001ms !important;
      scroll-behavior:auto !important;
    }
    html.js [data-reveal]{opacity:1;transform:none}
  }