/* roulang page: index */
:root{
  --ink-900:#0F1C1B;
  --ink-800:#16302E;
  --primary-700:#17504A;
  --primary-600:#1F5F57;
  --primary-500:#2C7A6F;
  --primary-050:#E8F1EE;
  --accent-600:#B8541F;
  --accent-500:#D4692E;
  --accent-050:#FBEADF;
  --paper:#F7F4EE;
  --surface:#FFFFFF;
  --line:#E4DED3;
  --text:#1E2624;
  --text-muted:#6A7370;
  --gold:#C9A227;
  --sh-1:0 1px 2px rgba(15,28,27,.06);
  --sh-2:0 10px 30px -12px rgba(15,28,27,.14);
  --sh-3:0 24px 60px -24px rgba(15,28,27,.22);
  --r-btn:12px;
  --r-card:18px;
  --nav-h:70px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--paper);
  color:var(--text);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
}
h1,h2,h3,h4{margin:0;font-family:"Noto Serif SC","Songti SC","SimSun",Georgia,serif;font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--ink-900)}
p{margin:0 0 22px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{margin:0;padding:0;list-style:none}
button,input,textarea{font:inherit;color:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--primary-500);outline-offset:2px;border-radius:6px}
[id]{scroll-margin-top:calc(var(--nav-h) + 62px)}

.wrap{max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:96px 0}
.section-white{background:var(--surface)}
.section-dark{background:var(--ink-900);color:#fff}
.nums{font-family:Inter,"SFMono-Regular",Consolas,monospace;font-variant-numeric:tabular-nums}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;height:var(--nav-h);background:rgba(255,255,255,.94);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);border-bottom:1px solid var(--line);transition:box-shadow .18s ease-out}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav{height:100%;max-width:1200px;margin:0 auto;padding:0 40px;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--primary-600);color:#fff;display:grid;place-items:center;font-family:"Noto Serif SC","Songti SC",serif;font-size:17px;font-weight:700}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);white-space:nowrap}
.nav-links{display:flex;align-items:center;height:100%;margin-left:6px}
.nav-links a{position:relative;display:inline-flex;align-items:center;height:100%;padding:0 14px;font-size:15px;color:var(--text);transition:color .16s ease-out}
.nav-links a::after{content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;background:var(--primary-600);transform:scaleX(0);transform-origin:left;transition:transform .18s ease-out}
.nav-links a:hover{color:var(--primary-600)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--primary-600);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.search{position:relative;width:220px}
.search input{width:100%;height:42px;border:1px solid var(--line);border-radius:999px;background:#fff;padding:0 16px 0 38px;font-size:14px;outline:none;transition:border-color .16s,box-shadow .16s}
.search input:focus{border-color:var(--primary-600);box-shadow:0 0 0 3px var(--primary-050)}
.search svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--text-muted)}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:10px;align-items:center;justify-content:center;cursor:pointer}
.burger span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900)}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 28px;border-radius:var(--r-btn);font-size:16px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background-color .16s ease-out,box-shadow .16s ease-out,transform .12s ease-out,color .16s,border-color .16s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary-600);color:#fff}
.btn-primary:hover{background:var(--primary-700);box-shadow:var(--sh-2)}
.btn-accent{background:var(--accent-600);color:#fff}
.btn-accent:hover{background:var(--accent-500);box-shadow:var(--sh-2)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary-500);color:var(--primary-700)}
.btn-sm{height:44px;padding:0 20px;font-size:15px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary-600);font-weight:600;font-size:15px;border-bottom:2px solid transparent;transition:border-color .16s ease-out,color .16s}
.link-arrow:hover{border-bottom-color:var(--primary-500);color:var(--primary-700)}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:6px 12px;font-size:13px;line-height:1;font-weight:600}
.badge-cat{background:var(--primary-050);color:var(--primary-700)}
.badge-hot{background:var(--accent-050);color:var(--accent-600)}
.badge-line{border:1px solid var(--line);background:#fff;color:var(--text-muted);font-weight:500}

/* Hero */
.hero{position:relative;overflow:hidden;background:var(--paper)}
.hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(var(--primary-700) 1px,transparent 1px);background-size:22px 22px;opacity:.06;pointer-events:none}
.hero-inner{position:relative;max-width:1200px;margin:0 auto;padding:64px 40px 76px;display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center;min-height:78vh}
.hero h1{font-size:52px;max-width:14em}
.hero-sub{margin-top:22px;font-size:18px;color:var(--text-muted);max-width:32em;line-height:1.8}
.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:32px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:28px;margin-top:44px;border-top:1px solid var(--line);padding-top:24px}
.hero-metric{font-size:14px;color:var(--text-muted)}
.hero-metric b{display:block;font-family:Inter,sans-serif;font-variant-numeric:tabular-nums;font-size:22px;color:var(--ink-900);line-height:1.4}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-2)}
.hero-frame{position:absolute;inset:-14px -14px 34px 34px;border:1px solid var(--gold);border-radius:var(--r-card);opacity:.45;pointer-events:none}
.hero-card{position:absolute;left:-18px;bottom:-18px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-2);padding:20px 24px;min-width:230px}
.hero-card .k{font-size:13px;color:var(--text-muted);margin-bottom:4px}
.hero-card .v{font-family:Inter,sans-serif;font-variant-numeric:tabular-nums;font-size:26px;font-weight:700;color:var(--accent-600);line-height:1.2}
.hero-card .s{font-size:12px;color:var(--text-muted);margin-top:6px}

/* 锚点条 */
.anchor-bar{position:sticky;top:var(--nav-h);z-index:40;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.anchor-scroll{max-width:1200px;margin:0 auto;padding:0 40px;display:flex;gap:6px;overflow-x:auto;scrollbar-width:none}
.anchor-scroll::-webkit-scrollbar{display:none}
.anchor-scroll a{flex:0 0 auto;padding:15px 14px;font-size:15px;color:var(--text-muted);border-bottom:2px solid transparent;transition:color .16s,border-color .16s}
.anchor-scroll a:hover,.anchor-scroll a.active{color:var(--primary-700);border-bottom-color:var(--accent-600);font-weight:600}

/* 区块标题 */
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head h2{position:relative;padding-left:16px;font-size:36px}
.sec-head h2::before{content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:3px;border-radius:2px;background:var(--accent-600)}
.sec-head p{margin:16px 0 0;color:var(--text-muted);font-size:16px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px;flex-wrap:wrap}
.sec-head-row .sec-head{margin-bottom:0}

/* 核心能力 */
.sell-grid{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:transform .16s ease-out,box-shadow .16s ease-out}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.sell-main{overflow:hidden}
.sell-main img{width:100%;aspect-ratio:16/9;object-fit:cover}
.sell-main-body{padding:28px}
.sell-main-body h3{font-size:22px;margin-bottom:12px}
.sell-main-body p{color:var(--text-muted);font-size:16px;margin-bottom:18px}
.sell-items{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.sell-item{padding:26px}
.sell-icon{width:42px;height:42px;border-radius:10px;background:var(--primary-050);color:var(--primary-700);display:grid;place-items:center;font-family:"Noto Serif SC",serif;font-weight:700;margin-bottom:16px}
.sell-item h3{font-size:18px;margin-bottom:10px}
.sell-item p{margin:0;font-size:15px;color:var(--text-muted);line-height:1.8}

/* 流程 */
.demo-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px}
.demo-left{position:sticky;top:calc(var(--nav-h) + 74px);align-self:start}
.demo-left h2{position:relative;padding-left:16px;font-size:36px}
.demo-left h2::before{content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:3px;border-radius:2px;background:var(--accent-600)}
.demo-left p{margin:18px 0 24px;color:var(--text-muted);font-size:16px}
.step{display:flex;gap:24px;padding:28px 0;border-bottom:1px solid var(--line)}
.step:first-child{border-top:1px solid var(--line)}
.step-num{flex:0 0 84px;font-family:Inter,sans-serif;font-variant-numeric:tabular-nums;font-size:48px;line-height:1;color:var(--accent-600);font-weight:600}
.step h3{font-size:19px;margin-bottom:8px}
.step p{margin:0;font-size:15px;color:var(--text-muted);line-height:1.85}
.step-img{margin-top:18px;border-radius:14px;overflow:hidden;border:1px solid var(--line)}
.step-img img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* 证据 */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;border-top:1px solid rgba(255,255,255,.14);border-bottom:1px solid rgba(255,255,255,.14);padding:32px 0}
.stat-num{font-family:Inter,sans-serif;font-variant-numeric:tabular-nums;font-size:40px;line-height:1.1;color:var(--accent-500);font-weight:700}
.stat-label{font-size:15px;margin-top:8px;color:rgba(255,255,255,.9)}
.stat-src{font-size:12px;color:rgba(255,255,255,.55);margin-top:4px}
.proof-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.proof-card{overflow:hidden}
.proof-card.offset{margin-top:56px}
.proof-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.proof-body{padding:28px}
.proof-body h3{font-size:20px;margin-bottom:12px}
.checklist li{position:relative;padding-left:20px;font-size:15px;color:var(--text-muted);margin-bottom:10px;line-height:1.8}
.checklist li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:999px;background:var(--primary-600)}
.quote-band{margin-top:56px;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent-600);border-radius:var(--r-card);padding:32px 36px}
.quote-band p{font-size:18px;color:var(--ink-800);margin-bottom:14px;font-family:"Noto Serif SC","Songti SC",serif;line-height:1.8}
.quote-band span{font-size:14px;color:var(--text-muted)}

/* 方案 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:center}
.price-card{padding:34px;position:relative}
.price-card h3{font-size:20px;margin-bottom:8px}
.price-card .desc{font-size:14px;color:var(--text-muted);margin-bottom:22px;min-height:44px}
.price-num{font-family:Inter,sans-serif;font-variant-numeric:tabular-nums;font-size:40px;font-weight:700;color:var(--ink-900);line-height:1.1}
.price-num small{font-size:14px;font-weight:500;color:var(--text-muted);margin-left:6px;font-family:"Noto Sans SC",sans-serif}
.price-list{margin:24px 0 28px;border-top:1px solid var(--line);padding-top:20px}
.price-list li{font-size:15px;color:var(--text-muted);margin-bottom:10px;position:relative;padding-left:18px}
.price-list li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:999px;background:var(--primary-500)}
.price-card.featured{border:1.5px solid var(--primary-600);transform:scale(1.06);box-shadow:var(--sh-2);z-index:2;background:#fff}
.price-card.featured .price-num{color:var(--accent-600)}
.price-card .badge-hot{position:absolute;top:20px;right:20px}
.price-note{margin-top:28px;font-size:14px;color:var(--text-muted);text-align:center}

/* 资讯 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.news-card{display:flex;flex-direction:column;overflow:hidden}
.news-card .thumb{overflow:hidden}
.news-card img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .2s ease-out}
.news-card:hover img{transform:scale(1.03)}
.news-body{padding:24px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:18px;margin:14px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a:hover{color:var(--primary-700)}
.news-excerpt{font-size:15px;color:var(--text-muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0 0 18px}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;font-size:13px;color:var(--text-muted)}
.news-meta time{font-family:Inter,sans-serif;font-variant-numeric:tabular-nums}
.empty-state{text-align:center;padding:64px 24px;background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);color:var(--text-muted)}
.empty-state .ic{width:44px;height:44px;margin:0 auto 16px;border-radius:999px;border:1px solid var(--line);display:grid;place-items:center;color:var(--primary-600)}
.empty-state p{margin-bottom:18px}

/* FAQ */
.faq{max-width:860px;margin:0 auto;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{width:100%;background:none;border:0;padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;font-size:17px;font-weight:600;color:var(--ink-900);cursor:pointer;transition:color .16s}
.faq-q:hover{color:var(--primary-700)}
.faq-q .ic{flex:0 0 auto;color:var(--primary-600);font-size:20px;line-height:1;transition:transform .18s ease-out}
.faq-item.open .faq-q .ic{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .18s ease-out}
.faq-a p{padding:0 40px 22px 0;margin:0;color:var(--text-muted);font-size:16px;line-height:1.85}

/* 结尾 CTA */
.cta-band{position:relative;background:var(--ink-900);color:#fff;padding:96px 0;text-align:center;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background-image:radial-gradient(#fff 1px,transparent 1px);background-size:24px 24px;opacity:.05;pointer-events:none}
.cta-inner{position:relative;max-width:760px;margin:0 auto;padding:0 40px}
.cta-band h2{color:#fff;font-size:36px}
.cta-band p{color:rgba(255,255,255,.76);margin:18px 0 32px;font-size:17px}
.cta-actions{display:flex;align-items:center;justify-content:center;gap:24px;flex-wrap:wrap}
.cta-band .link-arrow{color:#fff;border-bottom-color:transparent}
.cta-band .link-arrow:hover{color:var(--accent-500);border-bottom-color:var(--accent-500)}

/* 页脚 */
.site-footer{background:var(--ink-900);color:#fff;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--primary-600)}
.footer-brand span{font-weight:700;font-size:17px}
.footer-about{color:rgba(255,255,255,.68);font-size:14px;line-height:1.85;margin:0}
.footer-col h3{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;font-family:"Noto Sans SC",sans-serif}
.footer-col li{margin-bottom:12px}
.footer-col a,.footer-col p{color:rgba(255,255,255,.72);font-size:14px;margin:0;transition:color .16s}
.footer-col a:hover{color:var(--accent-500)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 0 72px;font-size:13px;color:rgba(255,255,255,.5)}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--accent-500)}

/* 浮动 CTA */
.float-cta{position:fixed;right:24px;bottom:28px;z-index:70;display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 24px;border-radius:999px;background:var(--accent-600);color:#fff;font-weight:600;font-size:15px;box-shadow:var(--sh-3);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .18s ease-out,transform .18s ease-out,background-color .16s}
.float-cta.show{opacity:1;visibility:visible;transform:none}
.float-cta:hover{background:var(--accent-500)}

/* 抽屉 */
.drawer{position:fixed;inset:0;z-index:80;pointer-events:none}
.drawer-mask{position:absolute;inset:0;background:rgba(15,28,27,.45);opacity:0;transition:opacity .18s ease-out}
.drawer-panel{position:absolute;top:0;right:0;height:100%;width:84%;max-width:360px;background:#fff;border-radius:18px 0 0 18px;padding:24px;transform:translateX(100%);transition:transform .2s ease-out;display:flex;flex-direction:column;gap:6px;overflow-y:auto}
.drawer-panel .dr-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-panel .dr-close{width:38px;height:38px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;font-size:18px;color:var(--text-muted)}
.drawer-panel a.dr-link{padding:14px 12px;border-radius:10px;font-size:16px;color:var(--text);transition:background-color .16s,color .16s}
.drawer-panel a.dr-link:hover,.drawer-panel a.dr-link.active{background:var(--primary-050);color:var(--primary-700);font-weight:600}
.drawer-panel .dr-search{width:100%;height:46px;border:1px solid var(--line);border-radius:12px;padding:0 14px;font-size:15px;margin:14px 0 6px}
.drawer.open{pointer-events:auto}
.drawer.open .drawer-mask{opacity:1}
.drawer.open .drawer-panel{transform:none}

/* 响应式 */
@media (max-width:1023px){
  :root{--nav-h:60px}
  .nav{padding:0 32px;gap:14px}
  .nav-links,.search{display:none}
  .burger{display:inline-flex}
  .wrap,.hero-inner,.anchor-scroll,.cta-inner{padding-left:32px;padding-right:32px}
  .hero-inner{grid-template-columns:1fr;gap:44px;min-height:auto;padding-top:48px;padding-bottom:64px}
  .hero h1{font-size:40px;max-width:20em}
  .hero-frame{inset:-10px -10px 26px 26px}
  .section{padding:72px 0}
  .sec-head h2,.demo-left h2,.cta-band h2{font-size:30px}
  .sell-grid{grid-template-columns:1fr;gap:28px}
  .demo-grid{grid-template-columns:1fr;gap:32px}
  .demo-left{position:static}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:28px}
  .proof-grid{grid-template-columns:1fr;gap:28px}
  .proof-card.offset{margin-top:0}
  .price-grid{grid-template-columns:1fr;gap:20px}
  .price-card.featured{transform:none}
  .news-grid{grid-template-columns:repeat(2,1fr);gap:22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:639px){
  body{font-size:16px}
  .nav,.wrap,.hero-inner,.anchor-scroll,.cta-inner{padding-left:20px;padding-right:20px}
  .brand-text{font-size:15px}
  .section{padding:56px 0}
  .hero h1{font-size:34px}
  .hero-sub{font-size:16px}
  .hero-actions{gap:16px}
  .hero-metrics{gap:20px}
  .hero-card{position:static;margin-top:16px;min-width:0}
  .hero-frame{display:none}
  .sec-head h2,.demo-left h2,.cta-band h2{font-size:26px}
  .sell-items{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr 1fr}
  .stat-num{font-size:32px}
  .step{gap:16px;padding:22px 0}
  .step-num{flex-basis:58px;font-size:34px}
  .news-grid{grid-template-columns:1fr}
  .quote-band{padding:24px}
  .price-num{font-size:34px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{padding-bottom:88px}
  .float-cta{left:0;right:0;bottom:0;height:56px;border-radius:0;justify-content:center;padding:0 20px calc(env(safe-area-inset-bottom,0px)) 20px}
  .anchor-scroll a{padding:14px 12px;font-size:14px}
}

/* roulang page: article */
:root{
  --ink-900:#0F1C1B;
  --ink-800:#16302E;
  --primary-700:#17504A;
  --primary-600:#1F5F57;
  --primary-500:#2C7A6F;
  --primary-050:#E8F1EE;
  --accent-600:#B8541F;
  --accent-500:#D4692E;
  --accent-050:#FBEADF;
  --paper:#F7F4EE;
  --surface:#FFFFFF;
  --line:#E4DED3;
  --text:#1E2624;
  --text-muted:#6A7370;
  --gold:#C9A227;
  --sh-1:0 1px 2px rgba(15,28,27,.06);
  --sh-2:0 10px 30px -12px rgba(15,28,27,.14);
  --sh-3:0 24px 60px -24px rgba(15,28,27,.22);
  --r-sm:12px;
  --r-md:18px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,.serif{
  font-family:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  font-weight:600;
  line-height:1.25;
  letter-spacing:-.01em;
  color:var(--ink-900);
  margin:0;
}
p{margin:0}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color .16s ease,border-color .16s ease,background-color .16s ease}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--primary-500);outline-offset:2px;border-radius:8px}
.tnum{font-variant-numeric:tabular-nums;font-family:"Inter","Noto Sans SC",system-ui,sans-serif}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:640px){.wrap{padding:0 32px}}
@media(min-width:1024px){.wrap{padding:0 40px}}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .18s ease;
}
.site-header.scrolled{box-shadow:var(--sh-1)}
.nav{
  max-width:1200px;margin:0 auto;padding:0 20px;height:60px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
}
@media(min-width:1024px){.nav{height:70px;padding:0 40px;gap:28px}}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:11px;background:var(--primary-600);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:"Noto Serif SC","Songti SC",serif;font-weight:700;font-size:17px;line-height:1;
  flex:0 0 auto;
}
.brand-text{
  font-weight:700;font-size:17px;color:var(--ink-900);white-space:nowrap;letter-spacing:.01em;
}
.nav-links{display:none}
.nav-right{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.search{display:none}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:26px;flex:1 1 auto;justify-content:center}
  .nav-links a{
    position:relative;font-size:15px;color:var(--text);padding:6px 0;white-space:nowrap;
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--primary-600);
    transform:scaleX(0);transform-origin:left;transition:transform .16s ease-out;
  }
  .nav-links a:hover{color:var(--primary-700)}
  .nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
  .nav-links a.active{color:var(--primary-600);font-weight:600}
  .search{
    display:flex;align-items:center;gap:8px;width:220px;height:44px;padding:0 14px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);
    color:var(--text-muted);transition:border-color .16s ease,box-shadow .16s ease;
  }
  .search:focus-within{border-color:var(--primary-600);box-shadow:0 0 0 3px var(--primary-050)}
  .search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--text)}
  .search input::placeholder{color:#9AA3A0}
}
@media(max-width:1023px){
  .nav-links{
    position:fixed;top:0;right:0;height:100%;width:84%;max-width:340px;
    background:#fff;border-radius:18px 0 0 18px;box-shadow:var(--sh-3);
    padding:86px 26px 26px;display:flex;flex-direction:column;gap:2px;
    transform:translateX(105%);transition:transform .2s ease-out;z-index:60;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-links a{padding:15px 2px;font-size:17px;color:var(--text);border-bottom:1px solid var(--line)}
  .nav-links a:last-child{border-bottom:0}
  .nav-links a.active{color:var(--primary-600);font-weight:600}
}
.nav-mask{
  position:fixed;inset:0;background:rgba(15,28,27,.45);z-index:55;
  opacity:0;visibility:hidden;transition:opacity .18s ease;
}
.nav-mask.show{opacity:1;visibility:visible}
.burger{
  display:flex;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;padding:0;
  transition:border-color .16s ease,background-color .16s ease;
}
.burger:hover{border-color:var(--primary-500)}
.burger span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
@media(min-width:1024px){.burger{display:none}}
@media(max-width:639px){.nav-right .btn-accent{display:none}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,box-shadow .16s ease,transform .12s ease;
  white-space:nowrap;
}
.btn-sm{height:44px;padding:0 20px;font-size:14px}
.btn-primary{background:var(--primary-600);color:#fff}
.btn-primary:hover{background:var(--primary-700);box-shadow:var(--sh-2)}
.btn-accent{background:var(--accent-600);color:#fff}
.btn-accent:hover{background:#a44a1a;box-shadow:var(--sh-2)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary-500);color:var(--primary-700)}
.btn:active{transform:translateY(1px)}
.link-plain{
  color:var(--primary-700);font-weight:600;font-size:15px;
  border-bottom:2px solid transparent;padding-bottom:2px;
  transition:border-color .16s ease,color .16s ease;
}
.link-plain:hover{border-bottom-color:var(--primary-600)}

/* ============ 面包屑 ============ */
.crumbs-wrap{background:rgba(255,255,255,.7);border-bottom:1px solid var(--line)}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:14px 0;font-size:13px;color:var(--text-muted);line-height:1.7;
}
.crumbs a{color:var(--text-muted)}
.crumbs a:hover{color:var(--primary-700)}
.crumbs .sep{color:#BFB8AA}
.crumbs .current{
  color:var(--text-muted);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ============ 文章 ============ */
.article-shell{padding:40px 0 64px}
@media(min-width:1024px){.article-shell{padding:60px 0 96px}}
.article-layout{max-width:820px;margin:0 auto}
.article-head{padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:28px}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;
  background:var(--primary-050);color:var(--primary-700);font-size:13px;font-weight:600;line-height:1.4;
}
.article-head h1{
  font-size:32px;line-height:1.32;margin:16px 0 18px;word-break:break-word;
}
@media(min-width:640px){.article-head h1{font-size:38px}}
@media(min-width:1024px){.article-head h1{font-size:44px;line-height:1.25}}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--text-muted);line-height:1.8;
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C6BFB1;display:inline-block}
.article-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:24px 20px;box-shadow:var(--sh-1);
}
@media(min-width:768px){.article-panel{padding:36px 36px}}
@media(min-width:1024px){.article-panel{padding:44px 48px}}
.article-body{font-size:17px;line-height:1.9;color:var(--text);letter-spacing:.01em;word-break:break-word}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 22px}
.article-body h2{
  font-size:26px;line-height:1.35;margin:40px 0 16px;padding-left:14px;
  border-left:3px solid var(--accent-600);
}
@media(min-width:768px){.article-body h2{font-size:30px}}
.article-body h3{font-size:20px;line-height:1.45;margin:30px 0 12px;color:var(--primary-700)}
.article-body h4{font-size:17px;margin:24px 0 10px}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:24px}
.article-body ul li{list-style:disc}
.article-body ol li{list-style:decimal}
.article-body li{margin:6px 0}
.article-body ul li::marker{color:var(--primary-600)}
.article-body ol li::marker{color:var(--primary-600);font-weight:600}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--paper);
  border-left:3px solid var(--accent-600);border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--text);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-md);margin:24px 0}
.article-body figure{margin:24px 0}
.article-body figcaption{
  font-size:13px;color:var(--text-muted);text-align:center;margin-top:10px;line-height:1.7;
}
.article-body a{color:var(--primary-700);border-bottom:1px solid rgba(31,95,87,.4)}
.article-body a:hover{color:var(--accent-600);border-bottom-color:var(--accent-600)}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border-radius:var(--r-sm);overflow:hidden;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.article-body th{background:var(--paper);font-weight:600;color:var(--ink-900)}
.article-body .table-scroll,.article-body .table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}

.empty-state{
  text-align:center;padding:44px 16px;border:1px dashed var(--line);border-radius:var(--r-md);
  background:var(--paper);
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:16px;background:var(--primary-050);
  color:var(--primary-700);display:flex;align-items:center;justify-content:center;
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{font-size:14px;color:var(--text-muted);margin-bottom:22px}

.tag-group{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:32px;padding-top:22px;border-top:1px dashed var(--line);
}
.tag-group .tag-label{font-size:13px;color:var(--text-muted);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--paper);border:1px solid var(--line);font-size:13px;color:var(--text-muted);
  transition:border-color .16s ease,color .16s ease,background-color .16s ease;
}
.tag:hover{border-color:var(--accent-500);color:var(--accent-600);background:var(--accent-050)}
.article-actions{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;
}

.related{margin-top:56px}
@media(min-width:1024px){.related{margin-top:72px}}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  margin-bottom:22px;padding-bottom:14px;border-bottom:1px solid var(--line);
}
.section-head h2{font-size:22px}
@media(min-width:768px){.section-head h2{font-size:26px)}}
.section-head .section-sub{font-size:13px;color:var(--text-muted);margin-top:6px}
.rel-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){.rel-grid{grid-template-columns:repeat(3,1fr);gap:20px}}
.rel-card{
  display:flex;gap:14px;padding:16px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);transition:transform .16s ease-out,box-shadow .16s ease-out,border-color .16s ease;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D6CFC1}
.rel-thumb{
  width:96px;height:72px;flex:0 0 auto;border-radius:var(--r-sm);object-fit:cover;
  background:var(--paper);
}
.rel-body{min-width:0;display:flex;flex-direction:column;justify-content:space-between}
.rel-card h3{
  font-size:16px;line-height:1.5;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-date{font-size:12px;color:var(--text-muted);margin-top:8px}
.back-actions{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:52px;
  padding-top:36px;border-top:1px solid var(--line);
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:40;
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:56px;padding:0 18px;background:var(--accent-600);color:#fff;
  font-size:15px;font-weight:600;
  opacity:0;transform:translateY(100%);
  transition:opacity .18s ease,transform .18s ease,background-color .16s ease;
  box-shadow:0 -6px 24px -12px rgba(15,28,27,.3);
}
.float-cta.show{opacity:1;transform:translateY(0)}
.float-cta:hover{background:#a44a1a}
@media(min-width:768px){
  .float-cta{
    left:auto;right:24px;bottom:28px;height:48px;padding:0 24px;border-radius:999px;
    transform:translateY(12px);box-shadow:var(--sh-2);
  }
  .float-cta.show{transform:translateY(0)}
}
@media(max-width:767px){
  body{padding-bottom:56px}
}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:#fff;padding:52px 0 22px;margin-top:0}
@media(min-width:1024px){.site-footer{padding:72px 0 26px}}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:36px}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px}}
.footer-brand{
  display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;margin-bottom:14px;
  color:#fff;
}
.footer-brand .brand-mark{background:var(--primary-600)}
.footer-about{color:rgba(255,255,255,.62);font-size:14px;line-height:1.9;max-width:360px}
.footer-col h3{
  font-size:15px;color:#fff;margin-bottom:14px;font-weight:600;
}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col li{list-style:none}
.footer-col a,.footer-col p{color:rgba(255,255,255,.62);font-size:14px;line-height:1.75;margin:0}
.footer-col a:hover{color:var(--accent-500)}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:var(--accent-500)}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* roulang page: category1 */
:root{
  --ink-900:#0F1C1B;
  --ink-800:#16302E;
  --primary-700:#17504A;
  --primary-600:#1F5F57;
  --primary-500:#2C7A6F;
  --primary-050:#E8F1EE;
  --accent-600:#B8541F;
  --accent-500:#D4692E;
  --accent-050:#FBEADF;
  --paper:#F7F4EE;
  --surface:#FFFFFF;
  --line:#E4DED3;
  --text:#1E2624;
  --text-muted:#6A7370;
  --gold:#C9A227;
  --sh-1:0 1px 2px rgba(15,28,27,.06);
  --sh-2:0 10px 30px -12px rgba(15,28,27,.14);
  --sh-3:0 24px 60px -24px rgba(15,28,27,.22);
  --r-btn:12px;
  --r-card:18px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html body{
  margin:0;
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--paper);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul{list-style:none;padding:0}
input,button{font-family:inherit}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:96px 0}
.section-tight{padding:72px 0}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .16s ease-out;
}
.site-header.scrolled{box-shadow:var(--sh-1)}
.nav{
  max-width:1200px;margin:0 auto;padding:0 40px;height:70px;
  display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;letter-spacing:0;white-space:nowrap}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--primary-600);color:#fff;
  display:grid;place-items:center;font-family:var(--font-serif);font-size:18px;line-height:1;
  box-shadow:var(--sh-1);flex:none;
}
.brand-text{color:var(--text)}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:12px}
.nav-links a{position:relative;font-size:15px;color:var(--text);padding:6px 0;transition:color .16s ease-out}
.nav-links a:hover{color:var(--primary-600)}
.nav-links a.active{color:var(--primary-600);font-weight:600}
.nav-links a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--primary-600);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.search{
  display:flex;align-items:center;gap:8px;width:220px;height:38px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--text-muted);
  transition:border-color .16s ease-out,box-shadow .16s ease-out;
}
.search:focus-within{border-color:var(--primary-600);box-shadow:0 0 0 3px var(--primary-050)}
.search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--text)}
.burger{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;
  position:relative;cursor:pointer;flex:none;
}
.burger span,.burger span::before,.burger span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;background:var(--text);border-radius:2px;transform:translateX(-50%);
}
.burger span{top:50%;margin-top:-1px}
.burger span::before{top:-6px;left:0;transform:none}
.burger span::after{top:6px;left:0;transform:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:filter .16s ease-out,box-shadow .16s ease-out,transform .12s ease-out,border-color .16s ease-out,color .16s ease-out,background-color .16s ease-out;
}
.btn-sm{height:44px;padding:0 20px;font-size:14px}
.btn-accent{background:var(--accent-600);color:#fff;box-shadow:var(--sh-1)}
.btn-accent:hover{filter:brightness(.94);box-shadow:var(--sh-2)}
.btn-primary{background:var(--primary-600);color:#fff;box-shadow:var(--sh-1)}
.btn-primary:hover{filter:brightness(.94);box-shadow:var(--sh-2)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary-600);color:var(--primary-600)}
.btn-light{background:#fff;color:var(--ink-900)}
.btn-light:hover{filter:brightness(.96)}
.btn:active{transform:translateY(1px)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--primary-500);outline-offset:2px;border-radius:6px}

/* ---------- 通用文本 ---------- */
.h2{font-family:var(--font-serif);font-size:36px;font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--text)}
.h3{font-size:22px;font-weight:600;line-height:1.4;color:var(--text)}
.h3-sm{font-size:18px;font-weight:600;line-height:1.5;color:var(--text)}
.lead{font-size:17px;line-height:1.9;color:var(--text-muted)}
.muted{color:var(--text-muted)}
.small{font-size:14px;line-height:1.8}
.tiny{font-size:12px;line-height:1.7;color:var(--text-muted)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px}
.sec-head h2{position:relative;padding-left:18px}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;border-radius:2px;background:var(--accent-600);
}
.badge{
  display:inline-block;padding:6px 12px;border-radius:999px;background:var(--primary-050);color:var(--primary-700);
  font-size:13px;font-weight:600;letter-spacing:0;line-height:1.4;
}
.badge-accent{background:var(--accent-050);color:var(--accent-600)}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--text-muted)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary-600);font-size:14px;font-weight:600;
  padding-bottom:3px;border-bottom:2px solid transparent;transition:border-color .16s ease-out,color .16s ease-out;
}
.link-arrow:hover{border-bottom-color:var(--primary-500);color:var(--primary-700)}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--paper);border-bottom:1px solid var(--line)}
.crumb{display:flex;align-items:center;gap:10px;padding:16px 0;font-size:14px;color:var(--text-muted)}
.crumb a{color:var(--primary-600)}
.crumb a:hover{text-decoration:underline;text-underline-offset:4px}
.crumb .sep{color:var(--line)}
.crumb .cur{color:var(--text-muted)}

/* ---------- 频道头 ---------- */
.page-hero{
  position:relative;overflow:hidden;background-color:var(--ink-900);color:#fff;
  background-image:linear-gradient(120deg,rgba(15,28,27,.92) 0%,rgba(15,28,27,.78) 55%,rgba(23,80,74,.72) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:28px 28px;opacity:.06;
}
.page-hero .container{position:relative;z-index:2}
.hero-inner{display:grid;grid-template-columns:8fr 4fr;gap:48px;align-items:end;padding:76px 0 68px}
.hero-h1{
  font-family:var(--font-serif);font-size:52px;font-weight:700;line-height:1.25;letter-spacing:-.01em;color:#fff;
}
.hero-h1 .h1-key{
  display:block;margin-top:12px;font-family:var(--font-sans);font-size:16px;font-weight:400;
  letter-spacing:.04em;color:rgba(255,255,255,.72);
}
.hero-desc{margin-top:18px;font-size:17px;line-height:1.9;color:rgba(255,255,255,.86);max-width:38em}
.hero-aside{
  border-left:1px solid rgba(255,255,255,.18);padding-left:28px;
}
.hero-aside .stat-line{display:flex;align-items:baseline;gap:10px;padding:10px 0}
.hero-aside .stat-line + .stat-line{border-top:1px solid rgba(255,255,255,.1)}
.hero-aside .stat-num{font-family:var(--font-num);font-size:26px;font-weight:600;color:#fff;font-variant-numeric:tabular-nums}
.hero-aside .stat-label{font-size:13px;color:rgba(255,255,255,.66)}
.hero-aside .stat-note{margin-top:14px;font-size:12px;color:rgba(255,255,255,.5);line-height:1.7}

/* ---------- 业务卡片 ---------- */
.biz-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .16s ease-out,box-shadow .16s ease-out,border-color .16s ease-out;
  scroll-margin-top:100px;
}
.biz-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D9D2C4}
.biz-cover{aspect-ratio:16/9;overflow:hidden;background:var(--primary-050)}
.biz-cover img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
.biz-card:hover .biz-cover img{transform:scale(1.03)}
.biz-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.biz-title{font-size:22px;font-weight:600;line-height:1.4}
.biz-text{font-size:15px;line-height:1.9;color:var(--text-muted);flex:1}

/* ---------- 侧栏 ---------- */
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.anchor-nav{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1)}
.anchor-nav h2{font-size:15px;font-weight:700;letter-spacing:.02em;color:var(--text-muted);margin-bottom:12px}
.anchor-link{
  display:flex;gap:10px;align-items:baseline;padding:11px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--text);transition:color .16s ease-out,padding-left .16s ease-out;
}
.anchor-link:last-of-type{border-bottom:0}
.anchor-link .no{font-family:var(--font-num);font-size:12px;color:var(--primary-600);min-width:22px}
.anchor-link:hover{color:var(--primary-700);padding-left:4px}
.side-cta{background:var(--ink-900);color:#fff;border-radius:var(--r-card);padding:26px;box-shadow:var(--sh-2)}
.side-cta h3{font-family:var(--font-serif);font-size:20px;font-weight:700;line-height:1.4}
.side-cta p{margin-top:10px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72)}
.side-cta .btn{margin-top:18px;width:100%}
.side-cta .tiny{margin-top:12px;color:rgba(255,255,255,.5)}

/* ---------- 适用对象清单卡 ---------- */
.scene-card{
  background:#fff;border:1px solid var(--line);border-left:3px solid var(--accent-600);
  border-radius:14px;padding:24px;box-shadow:var(--sh-1);
  transition:transform .16s ease-out,box-shadow .16s ease-out;
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.scene-card h3{font-size:18px;font-weight:600;line-height:1.5}
.scene-card p{margin-top:8px;font-size:14px;line-height:1.85;color:var(--text-muted)}
.scene-card .badge{margin-bottom:12px}

/* ---------- 流程 ---------- */
.step-row{
  display:grid;grid-template-columns:96px 1fr;gap:24px;padding:28px 0;border-bottom:1px solid var(--line);
  transition:background-color .16s ease-out;
}
.step-row:first-child{border-top:1px solid var(--line)}
.step-num{font-family:var(--font-serif);font-size:48px;line-height:1;color:var(--accent-600);font-weight:700}
.step-body h3{font-size:20px;font-weight:600;line-height:1.5}
.step-body p{margin-top:8px;font-size:15px;line-height:1.9;color:var(--text-muted);max-width:52em}

/* ---------- 数据带 ---------- */
.stat-band{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-cell{padding:36px 28px;border-left:1px solid var(--line)}
.stat-cell:first-child{border-left:0}
.stat-cell .n{font-family:var(--font-num);font-size:40px;font-weight:600;line-height:1.1;color:var(--accent-600);font-variant-numeric:tabular-nums}
.stat-cell .t{margin-top:8px;font-size:15px;color:var(--text)}
.stat-cell .s{margin-top:6px;font-size:12px;color:var(--text-muted)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;background:none;border:0;text-align:left;font-size:17px;font-weight:600;
  color:var(--text);cursor:pointer;line-height:1.7;
}
.faq-q .ico{
  flex:none;width:26px;height:26px;border-radius:999px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--primary-600);font-size:15px;line-height:1;
  transition:transform .16s ease-out,background-color .16s ease-out,border-color .16s ease-out;
}
.faq-item.open .faq-q .ico{transform:rotate(180deg);background:var(--primary-050);border-color:var(--primary-050)}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .2s ease-out,opacity .16s ease-out}
.faq-item.open .faq-a{max-height:420px;opacity:1}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.9;color:var(--text-muted);max-width:46em}

/* ---------- 结尾 CTA ---------- */
.cta-band{position:relative;background-color:var(--ink-900);color:#fff;overflow:hidden;padding:88px 0}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:26px 26px;opacity:.06;
}
.cta-band .container{position:relative;z-index:2;text-align:center}
.cta-band h2{font-family:var(--font-serif);font-size:36px;font-weight:700;line-height:1.3;color:#fff}
.cta-band p{margin-top:16px;font-size:16px;line-height:1.9;color:rgba(255,255,255,.74)}
.cta-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:18px;justify-content:center;align-items:center}
.cta-band .link-arrow{color:#EBC9AE}
.cta-band .link-arrow:hover{color:#fff;border-bottom-color:#EBC9AE}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#fff;border-top:1px solid rgba(255,255,255,.08)}
.site-footer .wrap{max-width:1200px;margin:0 auto;padding:72px 40px 72px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;background:var(--primary-600);display:grid;place-items:center;font-family:var(--font-serif);font-size:18px;flex:none}
.footer-about{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:34em}
.footer-col h3{font-size:14px;font-weight:700;letter-spacing:.04em;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a,.footer-col ul li p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62)}
.footer-col ul li a{transition:color .16s ease-out}
.footer-col ul li a:hover{color:var(--accent-500)}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:var(--accent-500)}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;height:52px;padding:0 24px;
  border-radius:999px;background:var(--accent-600);color:#fff;font-size:15px;font-weight:600;
  box-shadow:var(--sh-3);opacity:0;pointer-events:none;transform:translateY(12px);
  transition:opacity .2s ease-out,transform .2s ease-out,filter .16s ease-out;
}
.float-cta.show{opacity:1;pointer-events:auto;transform:none}
.float-cta:hover{filter:brightness(.94)}

/* ---------- 移动抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:90;visibility:hidden}
.drawer.open{visibility:visible}
.drawer-overlay{position:absolute;inset:0;background:rgba(15,28,27,.45);opacity:0;transition:opacity .2s ease-out}
.drawer.open .drawer-overlay{opacity:1}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:84%;max-width:380px;background:#fff;
  border-radius:18px 0 0 18px;padding:24px;transform:translateX(100%);
  transition:transform .2s ease-out;overflow-y:auto;
}
.drawer.open .drawer-panel{transform:none}
.drawer-panel .brand{margin-bottom:24px}
.drawer-links{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.drawer-links a{padding:16px 0;border-bottom:1px solid var(--line);font-size:16px;color:var(--text)}
.drawer-links a.active{color:var(--primary-600);font-weight:600}
.drawer-search{
  margin-top:24px;display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;color:var(--text-muted);
}
.drawer-search input{border:0;outline:0;background:transparent;width:100%;font-size:14px}
.drawer-panel .btn{margin-top:18px;width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 32px}
  .nav{padding:0 32px;gap:20px}
  .site-footer .wrap{padding:64px 32px 72px}
  .section{padding:72px 0}
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:64px 0 56px}
  .hero-aside{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.16);padding-top:24px}
  .hero-h1{font-size:40px}
  .h2,.cta-band h2{font-size:30px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-cell:nth-child(3){border-left:0}
  .stat-cell:nth-child(n+3){border-top:1px solid var(--line)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .side-sticky{position:static;top:auto}
  .cta-band{padding:72px 0}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .search{display:none}
  .burger{display:block}
  .nav{height:60px}
}
@media (min-width:1024px){
  .burger{display:none}
  .drawer{display:none}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .nav{padding:0 20px;gap:12px}
  .site-footer .wrap{padding:56px 20px 72px}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .hero-inner{padding:52px 0 48px}
  .hero-h1{font-size:34px}
  .hero-h1 .h1-key{font-size:14px}
  .h2,.cta-band h2{font-size:26px}
  .h3,.biz-title{font-size:19px}
  .stat-grid{grid-template-columns:1fr}
  .stat-cell{border-left:0;border-top:1px solid var(--line);padding:24px 0}
  .stat-cell:first-child{border-top:0}
  .stat-cell .n{font-size:34px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .step-row{grid-template-columns:56px 1fr;gap:16px}
  .step-num{font-size:34px}
  .btn{width:auto}
  .side-cta .btn{width:100%}
  .float-cta{
    left:0;right:0;bottom:0;height:56px;border-radius:0;justify-content:center;
    padding-bottom:env(safe-area-inset-bottom);
  }
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --ink-900:#0F1C1B;
  --ink-800:#16302E;
  --primary-700:#17504A;
  --primary-600:#1F5F57;
  --primary-500:#2C7A6F;
  --primary-050:#E8F1EE;
  --accent-600:#B8541F;
  --accent-500:#D4692E;
  --accent-050:#FBEADF;
  --paper:#F7F4EE;
  --surface:#FFFFFF;
  --line:#E4DED3;
  --text:#1E2624;
  --text-muted:#6A7370;
  --gold:#C9A227;
  --r-sm:12px;
  --r-md:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,28,27,.06);
  --sh-2:0 10px 30px -12px rgba(15,28,27,.14);
  --sh-3:0 24px 60px -24px rgba(15,28,27,.22);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --mono:"Inter","SFMono-Regular",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.9;
  letter-spacing:.01em;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;line-height:1.25;letter-spacing:-.01em;color:var(--ink-900);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--primary-500);outline-offset:2px;border-radius:6px;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media(min-width:768px){.wrap{padding:0 32px;}}
@media(min-width:1024px){.wrap{padding:0 40px;}}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .16s ease-out;
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.nav{
  max-width:1200px;margin:0 auto;
  padding:0 20px;height:60px;
  display:flex;align-items:center;gap:16px;
}
@media(min-width:768px){.nav{padding:0 32px;}}
@media(min-width:1024px){.nav{padding:0 40px;height:70px;gap:28px;}}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;
  border-radius:9px;
  background:var(--primary-600);
  color:#fff;
  font-family:var(--serif);
  font-size:18px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em;white-space:nowrap;}
.nav-links{display:none;}
@media(min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:26px;margin-left:12px;}
  .nav-links a{
    position:relative;font-size:15px;color:var(--text);
    padding:6px 0;transition:color .16s ease-out;
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
    background:var(--primary-600);transform:scaleX(0);transform-origin:left;
    transition:transform .18s ease-out;
  }
  .nav-links a:hover{color:var(--primary-600);}
  .nav-links a:hover::after{transform:scaleX(1);}
  .nav-links a.active{color:var(--primary-600);font-weight:600;}
  .nav-links a.active::after{transform:scaleX(1);}
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px;}
.search{
  display:none;
}
@media(min-width:1024px){
  .search{
    display:flex;align-items:center;gap:8px;
    width:220px;height:40px;padding:0 14px;
    background:var(--surface);
    border:1px solid var(--line);border-radius:var(--r-pill);
    color:var(--text-muted);
    transition:border-color .16s ease-out,box-shadow .16s ease-out;
  }
  .search:focus-within{border-color:var(--primary-600);box-shadow:0 0 0 3px var(--primary-050);}
  .search input{border:0;outline:0;background:transparent;width:100%;font-size:14px;}
  .search input::placeholder{color:#9aa3a0;}
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;
  border-radius:var(--r-sm);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:filter .16s ease-out,box-shadow .16s ease-out,transform .12s ease-out,background-color .16s ease-out,border-color .16s ease-out;
  white-space:nowrap;
}
.btn-sm{height:44px;padding:0 20px;font-size:14px;}
.btn-accent{background:var(--accent-600);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{filter:brightness(.94);box-shadow:var(--sh-2);}
.btn-accent:active{transform:translateY(1px);}
.btn-primary{background:var(--primary-600);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{filter:brightness(.94);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:var(--surface);color:var(--text);border-color:var(--line);}
.btn-ghost:hover{border-color:var(--primary-500);color:var(--primary-700);}
.btn-block{width:100%;}
.burger{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 10px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);
  cursor:pointer;
}
.burger span{display:block;height:2px;background:var(--ink-800);border-radius:2px;position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;height:2px;width:100%;background:var(--ink-800);border-radius:2px;}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
@media(min-width:1024px){.burger{display:none;}}

/* drawer */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,28,27,.45);
  opacity:0;pointer-events:none;transition:opacity .18s ease-out;z-index:80;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84%;max-width:360px;
  background:var(--surface);z-index:90;
  border-radius:18px 0 0 18px;
  padding:22px 22px 32px;
  transform:translateX(102%);
  transition:transform .2s ease-out;
  display:flex;flex-direction:column;gap:22px;
  box-shadow:var(--sh-3);
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:38px;height:38px;border-radius:var(--r-sm);
  background:var(--paper);border:1px solid var(--line);
  font-size:20px;line-height:1;cursor:pointer;color:var(--text-muted);
}
.drawer-search input{
  width:100%;height:46px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:var(--surface);font-size:15px;
}
.drawer-links{display:flex;flex-direction:column;border-top:1px solid var(--line);}
.drawer-links a{
  padding:15px 2px;border-bottom:1px solid var(--line);
  font-size:16px;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-links a.active{color:var(--primary-600);font-weight:600;}
.drawer-links a::after{content:"›";color:var(--text-muted);font-size:18px;}

/* ============ hero ============ */
.page-hero{
  position:relative;
  background-image:linear-gradient(120deg,rgba(247,244,238,.96) 0%,rgba(247,244,238,.86) 46%,rgba(232,241,238,.78) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  padding:40px 0 56px;
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(15,28,27,.9) 1px,transparent 1px);
  background-size:34px 34px;
  opacity:.05;pointer-events:none;
}
@media(min-width:1024px){.page-hero{padding:56px 0 96px;}}
.crumb{
  position:relative;z-index:1;
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--text-muted);margin-bottom:26px;
}
.crumb a{color:var(--text-muted);transition:color .16s ease-out;}
.crumb a:hover{color:var(--primary-600);}
.crumb .current{color:var(--text);}
.hero-grid{position:relative;z-index:1;display:grid;gap:34px;grid-template-columns:1fr;}
@media(min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:56px;align-items:end;}}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;line-height:1.5;
}
.badge-primary{background:var(--primary-050);color:var(--primary-700);}
.badge-accent{background:var(--accent-050);color:var(--accent-600);}
.hero-grid h1{
  font-size:34px;margin-top:18px;
}
@media(min-width:768px){.hero-grid h1{font-size:44px;}}
@media(min-width:1024px){.hero-grid h1{font-size:52px;}}
.hero-sub{
  margin-top:18px;font-size:16px;line-height:1.9;color:var(--text-muted);
  max-width:34em;
}
@media(min-width:1024px){.hero-sub{font-size:17px;}}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;align-items:center;gap:18px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary-700);font-weight:600;font-size:15px;
  text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;
  text-decoration-color:transparent;
  transition:text-decoration-color .16s ease-out,color .16s ease-out;
}
.text-link:hover{text-decoration-color:var(--primary-500);color:var(--primary-600);}
.hero-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-2);
  padding:24px;
}
.hero-panel h2{font-size:18px;margin-bottom:14px;}
.stat-list{display:grid;gap:0;}
.stat-list li{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:13px 0;border-bottom:1px dashed var(--line);
}
.stat-list li:last-child{border-bottom:0;padding-bottom:0;}
.stat-list .k{font-size:14px;color:var(--text-muted);}
.stat-list .v{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:22px;font-weight:700;color:var(--accent-600);
}
.hero-note{margin-top:14px;font-size:13px;color:var(--text-muted);}

/* ============ section base ============ */
.section{padding:56px 0;}
@media(min-width:768px){.section{padding:72px 0;}}
@media(min-width:1024px){.section{padding:96px 0;}}
.section-head{max-width:780px;margin-bottom:36px;}
@media(min-width:1024px){.section-head{margin-bottom:52px;}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--primary-700);
  letter-spacing:.06em;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-500);}
.section-head h2{font-size:26px;}
@media(min-width:1024px){.section-head h2{font-size:36px;}}
.section-head p{margin-top:16px;color:var(--text-muted);font-size:16px;max-width:44em;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* ============ flow items ============ */
.flow-list{border-top:1px solid var(--line);}
.flow-item{
  display:grid;grid-template-columns:1fr;gap:22px;
  padding:36px 0;border-bottom:1px solid var(--line);
}
@media(min-width:1024px){
  .flow-item{grid-template-columns:6fr 6fr;gap:56px;align-items:center;padding:48px 0;}
  .flow-item .flow-media{order:1;}
  .flow-item .flow-body{order:2;}
  .flow-item:nth-child(even) .flow-media{order:2;}
  .flow-item:nth-child(even) .flow-body{order:1;}
}
.flow-media{
  position:relative;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--sh-1);
  aspect-ratio:16/10;
  background:var(--primary-050);
}
.flow-media img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out;}
.flow-item:hover .flow-media img{transform:scale(1.02);}
.flow-no{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:40px;line-height:1;font-weight:700;color:var(--accent-600);
  letter-spacing:-.02em;
}
@media(min-width:1024px){.flow-no{font-size:48px;}}
.flow-body h3{font-size:20px;margin-top:12px;}
@media(min-width:1024px){.flow-body h3{font-size:22px;}}
.flow-body p{margin-top:14px;color:var(--text-muted);font-size:16px;}
.ticks{margin-top:18px;display:flex;flex-wrap:wrap;gap:10px 14px;}
.ticks li{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--primary-700);
  background:var(--primary-050);
  border-radius:var(--r-pill);
  padding:6px 14px;
}
.ticks li::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--primary-600);flex:0 0 6px;
}
.flow-body .text-link{margin-top:20px;}

/* ============ scenes ============ */
.scene-grid{display:grid;gap:24px;grid-template-columns:1fr;}
@media(min-width:768px){.scene-grid{grid-template-columns:repeat(2,1fr);gap:28px;}}
.scene{
  background:var(--surface);
  border:1px solid var(--line);
  border-left:3px solid var(--primary-600);
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:24px 26px;
  transition:transform .16s ease-out,box-shadow .16s ease-out,border-left-color .16s ease-out;
}
.scene:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-left-color:var(--accent-500);}
.scene h3{font-size:18px;}
.scene p{margin-top:10px;font-size:15px;color:var(--text-muted);}
.scene ul{margin-top:14px;display:grid;gap:8px;}
.scene ul li{
  position:relative;padding-left:16px;font-size:14px;color:var(--text);
}
.scene ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:5px;height:5px;
  border-radius:50%;background:var(--accent-500);
}

/* ============ process ============ */
.process{display:grid;gap:0;grid-template-columns:1fr;counter-reset:step;}
@media(min-width:1024px){.process{grid-template-columns:repeat(4,1fr);gap:0;}}
.step{
  position:relative;
  padding:28px 24px 28px 0;
  border-top:2px solid var(--primary-600);
}
@media(min-width:1024px){
  .step{padding:30px 28px 10px 24px;border-top:2px solid var(--line);}
  .step:first-child{border-top-color:var(--primary-600);}
  .step::before{content:"";position:absolute;top:-2px;left:0;width:100%;height:2px;background:transparent;}
}
.step:hover{border-top-color:var(--accent-500);}
.step .step-no{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:13px;letter-spacing:.12em;color:var(--accent-600);font-weight:700;
}
.step h3{font-size:18px;margin-top:10px;}
.step p{margin-top:10px;font-size:15px;color:var(--text-muted);}
.step .step-meta{
  margin-top:14px;font-size:13px;color:var(--primary-700);
  background:var(--primary-050);border-radius:var(--r-pill);
  padding:5px 12px;display:inline-block;
}

/* ============ metrics ============ */
.metric-band{
  background:var(--ink-900);color:#fff;
  border-radius:var(--r-md);
  padding:34px 26px;
  position:relative;overflow:hidden;
}
.metric-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:30px 30px;opacity:.06;
}
.metric-grid{
  position:relative;z-index:1;
  display:grid;gap:24px;grid-template-columns:repeat(2,1fr);
}
@media(min-width:1024px){.metric-grid{grid-template-columns:repeat(4,1fr);gap:32px;}}
.metric .num{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:32px;font-weight:700;color:#E9A97B;line-height:1.2;
}
@media(min-width:1024px){.metric .num{font-size:40px;}}
.metric .label{font-size:15px;color:rgba(255,255,255,.9);margin-top:6px;}
.metric .src{font-size:12px;color:rgba(255,255,255,.55);margin-top:6px;}

/* ============ faq ============ */
.faq{max-width:860px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;text-align:left;
  font-family:var(--sans);font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .16s ease-out;
}
.faq-q:hover{color:var(--primary-600);}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;position:relative;
  transition:transform .18s ease-out;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary-600);border-radius:2px;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;}
.faq-item.open .faq-icon{transform:rotate(180deg);}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .18s ease-out,opacity .16s ease-out;
  opacity:0;
}
.faq-item.open .faq-a{opacity:1;}
.faq-a p{padding:0 0 22px;font-size:15px;color:var(--text-muted);max-width:44em;}

/* ============ cta band ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:#fff;
  padding:56px 0;
}
@media(min-width:1024px){.cta-band{padding:88px 0;}}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:32px 32px;opacity:.06;
}
.cta-inner{position:relative;z-index:1;max-width:720px;margin:0 auto;text-align:center;}
.cta-inner h2{color:#fff;font-size:26px;}
@media(min-width:1024px){.cta-inner h2{font-size:36px;}}
.cta-inner p{margin-top:16px;color:rgba(255,255,255,.78);font-size:16px;}
.cta-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:16px;justify-content:center;}
.cta-band .text-link{color:#E9A97B;}
.cta-band .text-link:hover{color:#fff;text-decoration-color:#E9A97B;}

/* ============ footer ============ */
.site-footer{background:var(--ink-900);color:#fff;padding:56px 0 0;}
@media(min-width:1024px){.site-footer{padding-top:72px;}}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:40px;}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;}}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;color:#fff;margin-bottom:16px;
}
.footer-brand .brand-mark{background:var(--primary-600);}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);max-width:30em;}
.footer-col h3{
  font-family:var(--sans);font-size:14px;font-weight:600;
  color:rgba(255,255,255,.92);letter-spacing:.04em;margin-bottom:16px;
}
.footer-col ul{display:grid;gap:12px;}
.footer-col a,.footer-col p{font-size:14px;color:rgba(255,255,255,.66);line-height:1.8;}
.footer-col a{transition:color .16s ease-out;}
.footer-col a:hover{color:var(--accent-500);}
.footer-bottom{
  margin-top:44px;padding:22px 0 72px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.7);transition:color .16s ease-out;}
.footer-bottom a:hover{color:var(--accent-500);}

/* ============ float cta ============ */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;gap:8px;
  height:52px;padding:0 24px;
  background:var(--accent-600);color:#fff;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;
  box-shadow:var(--sh-3);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .18s ease-out,transform .18s ease-out,filter .16s ease-out;
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{filter:brightness(.94);}
@media(max-width:767px){
  .float-cta{
    left:0;right:0;bottom:0;height:56px;border-radius:0;
    justify-content:center;padding:0 16px calc(env(safe-area-inset-bottom,0px));
  }
  .footer-bottom{padding-bottom:96px;}
}

/* roulang page: category3 */
:root{
  --ink-900:#0F1C1B;
  --ink-800:#16302E;
  --primary-700:#17504A;
  --primary-600:#1F5F57;
  --primary-500:#2C7A6F;
  --primary-050:#E8F1EE;
  --accent-600:#B8541F;
  --accent-500:#D4692E;
  --accent-050:#FBEADF;
  --paper:#F7F4EE;
  --surface:#FFFFFF;
  --line:#E4DED3;
  --text:#1E2624;
  --text-muted:#6A7370;
  --gold:#C9A227;
  --sh-1:0 1px 2px rgba(15,28,27,.06);
  --sh-2:0 10px 30px -12px rgba(15,28,27,.14);
  --sh-3:0 24px 60px -24px rgba(15,28,27,.22);
  --r-btn:12px;
  --r-card:18px;
  --r-pill:999px;
}
html{scroll-behavior:smooth;}
.page-body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
.page-body img{display:block;max-width:100%;}
.page-body a{color:inherit;}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}
.serif{font-family:"Noto Serif SC","Songti SC",Georgia,serif;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
  transition:box-shadow .18s ease;
}
.site-header.scrolled{box-shadow:var(--sh-1);}
.nav{
  max-width:1200px;margin:0 auto;padding:0 40px;height:70px;
  display:flex;align-items:center;gap:26px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none;}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--primary-600);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:"Noto Serif SC",serif;font-size:17px;font-weight:700;flex:none;
}
.brand-text{font-size:17px;font-weight:700;color:var(--text);white-space:nowrap;letter-spacing:.01em;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:14px;}
.nav-links a{
  font-size:15px;color:var(--text);text-decoration:none;padding:6px 0;
  border-bottom:2px solid transparent;transition:color .15s ease,border-color .15s ease;
}
.nav-links a:hover{color:var(--primary-600);}
.nav-links a.active{color:var(--primary-600);font-weight:600;border-bottom-color:var(--primary-600);}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.search{
  display:flex;align-items:center;gap:8px;width:220px;height:40px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-pill);background:#fff;color:var(--text-muted);
  transition:border-color .15s ease,box-shadow .15s ease;
}
.search:focus-within{border-color:var(--primary-600);box-shadow:0 0 0 3px var(--primary-050);}
.search svg{flex:none;color:var(--text-muted);}
.search input{
  border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--text);
  font-family:inherit;height:100%;
}
.burger{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;
  background:#fff;align-items:center;justify-content:center;cursor:pointer;padding:0;
}
.burger span{display:block;width:18px;height:2px;background:var(--text);position:relative;border-radius:2px;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;text-decoration:none;border:1px solid transparent;
  cursor:pointer;font-family:inherit;transition:background-color .16s ease,box-shadow .16s ease,transform .16s ease,border-color .16s ease,color .16s ease;
}
.btn-sm{height:44px;padding:0 20px;font-size:14px;}
.btn-accent{background:var(--accent-600);color:#fff;box-shadow:var(--sh-1);}
.btn-accent:hover{background:#A2471A;box-shadow:var(--sh-2);}
.btn-accent:active{transform:translateY(1px);}
.btn-primary{background:var(--primary-600);color:#fff;box-shadow:var(--sh-1);}
.btn-primary:hover{background:var(--primary-700);box-shadow:var(--sh-2);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.42);color:#fff;}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.1);}
.btn-light{background:#fff;border-color:var(--line);color:var(--text);}
.btn-light:hover{border-color:var(--primary-500);color:var(--primary-700);}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;background:none;border:0;padding:0;height:auto;
  color:var(--primary-700);font-weight:600;font-size:15px;cursor:pointer;
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;
}
.btn-link:hover{color:var(--primary-500);}
.page-body a:focus-visible,
.page-body button:focus-visible,
.page-body input:focus-visible,
.page-body select:focus-visible,
.page-body textarea:focus-visible{outline:2px solid var(--primary-500);outline-offset:2px;}

/* ---------- 首屏 ---------- */
.hero{position:relative;background:var(--ink-900);color:#fff;overflow:hidden;}
.hero-media{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.38;
}
.hero-veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(15,28,27,.95) 0%,rgba(15,28,27,.78) 54%,rgba(15,28,27,.6) 100%);}
.hero-stars{
  position:absolute;inset:0;opacity:.06;
  background-image:radial-gradient(rgba(255,255,255,.85) 1px,transparent 1px);
  background-size:26px 26px;
}
.hero-inner{position:relative;padding:60px 0 76px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:26px;}
.crumbs a{color:rgba(255,255,255,.84);text-decoration:none;}
.crumbs a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.crumbs .sep{opacity:.5;}
.hero-grid{display:grid;grid-template-columns:8fr 4fr;gap:52px;align-items:end;}
.hero h1{
  font-family:"Noto Serif SC","Songti SC",serif;
  font-size:52px;line-height:1.25;letter-spacing:-.01em;font-weight:700;margin:0 0 18px;color:#fff;
}
.hero-lead{font-size:17px;line-height:1.9;color:rgba(255,255,255,.86);max-width:620px;margin:0 0 28px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
.hero-panel{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-card);padding:24px 26px;
}
.hero-panel dl{margin:0;}
.hero-panel .row{display:flex;justify-content:space-between;align-items:baseline;gap:14px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.12);}
.hero-panel .row:last-child{border-bottom:0;padding-bottom:0;}
.hero-panel .row:first-child{padding-top:0;}
.hero-panel dt{font-size:14px;color:rgba(255,255,255,.7);margin:0;}
.hero-panel dd{
  margin:0;font-family:Inter,"Noto Sans SC",sans-serif;font-size:16px;font-weight:600;color:#fff;
  font-variant-numeric:tabular-nums;letter-spacing:0;
}

/* ---------- 板块 ---------- */
.section{padding:96px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;}
.section-title{
  font-family:"Noto Serif SC","Songti SC",serif;
  font-size:36px;line-height:1.25;letter-spacing:-.01em;font-weight:700;margin:0;
  position:relative;padding-left:18px;
}
.section-title::before{content:"";position:absolute;left:0;top:.14em;bottom:.14em;width:4px;border-radius:2px;background:var(--accent-600);}
.section-lead{color:var(--text-muted);font-size:16px;line-height:1.9;max-width:660px;margin:16px 0 0;}
.eyebrow{
  display:inline-block;font-size:13px;padding:6px 12px;border-radius:var(--r-pill);
  background:var(--primary-050);color:var(--primary-700);font-weight:600;margin-bottom:16px;
}

/* ---------- 渠道 + 表单 ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.channel-list{list-style:none;margin:0;padding:0;}
.channel-item{display:flex;gap:16px;padding:24px 0;border-top:1px solid var(--line);}
.channel-item:last-child{border-bottom:1px solid var(--line);}
.channel-num{
  font-family:Inter,sans-serif;font-size:14px;font-weight:700;color:var(--accent-600);
  letter-spacing:.06em;padding-top:5px;min-width:30px;font-variant-numeric:tabular-nums;
}
.channel-item h3{font-size:19px;font-weight:600;line-height:1.5;margin:0 0 8px;color:var(--text);}
.channel-item p{margin:0;font-size:15px;line-height:1.85;color:var(--text-muted);}
.form-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--sh-1);
}
.form-card h3{font-size:22px;font-weight:600;margin:0 0 6px;line-height:1.4;}
.form-card .form-sub{font-size:14px;color:var(--text-muted);margin:0 0 24px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;margin-bottom:8px;color:var(--text);}
.field input,.field select,.field textarea{
  width:100%;height:46px;border:1px solid var(--line);border-radius:12px;
  padding:0 14px;font-size:15px;font-family:inherit;color:var(--text);background:#fff;
  transition:border-color .15s ease,box-shadow .15s ease;outline:none;
}
.field textarea{height:auto;min-height:112px;padding:12px 14px;line-height:1.75;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--primary-600);box-shadow:0 0 0 3px var(--primary-050);}
.form-actions{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:6px;}
.form-note{font-size:13px;color:var(--text-muted);margin:14px 0 0;}
.form-alert{
  display:none;margin-top:16px;padding:12px 16px;border-radius:12px;
  background:var(--primary-050);color:var(--primary-700);font-size:14px;line-height:1.8;
}
.form-alert.show{display:block;}

/* ---------- 数据带 ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:38px 40px;box-shadow:var(--sh-1);
}
.stat-num{
  font-family:Inter,"Noto Sans SC",sans-serif;font-size:40px;line-height:1.1;font-weight:700;
  color:var(--accent-600);font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.stat-num small{font-size:16px;font-weight:600;margin-left:4px;letter-spacing:0;}
.stat-label{font-size:15px;color:var(--text);margin-top:8px;}
.stat-src{font-size:12px;color:var(--text-muted);margin-top:4px;}

/* ---------- 图文衔接 ---------- */
.feature{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.feature-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--sh-1);}
.feature-media img{width:100%;aspect-ratio:16 / 9;object-fit:cover;}
.feature h3{font-size:22px;font-weight:600;line-height:1.5;margin:0 0 12px;}
.feature p{margin:0;font-size:15px;line-height:1.9;color:var(--text-muted);}
.dot-list{list-style:none;padding:0;margin:20px 0 0;}
.dot-list li{
  position:relative;padding-left:20px;margin-bottom:12px;font-size:15px;line-height:1.85;
  color:var(--text-muted);
}
.dot-list li::before{content:"";position:absolute;left:0;top:.7em;width:6px;height:6px;border-radius:var(--r-pill);background:var(--primary-600);}
.dot-list li strong{color:var(--text);font-weight:600;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;}
.faq-item{border-top:1px solid var(--line);}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--text);font-family:inherit;line-height:1.6;
  transition:color .15s ease;
}
.faq-q:hover{color:var(--primary-700);}
.faq-icon{flex:none;width:22px;height:22px;position:relative;transition:transform .18s ease;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--primary-600);border-radius:2px;}
.faq-icon::before{left:0;top:10px;width:22px;height:2px;}
.faq-icon::after{left:10px;top:0;width:2px;height:22px;transition:opacity .16s ease;}
.faq-item.open .faq-icon{transform:rotate(180deg);}
.faq-item.open .faq-icon::after{opacity:0;}
.faq-a{max-height:0;overflow:hidden;opacity:0;transition:max-height .22s ease,opacity .16s ease;}
.faq-item.open .faq-a{max-height:420px;opacity:1;}
.faq-a p{margin:0;padding:0 4px 22px;font-size:15px;line-height:1.9;color:var(--text-muted);}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  background:var(--primary-050);border:1px solid #D7E5E0;border-radius:var(--r-card);
  padding:56px 40px;text-align:center;position:relative;overflow:hidden;
}
.cta-band .cta-stars{
  position:absolute;inset:0;opacity:.05;
  background-image:radial-gradient(rgba(23,80,74,.9) 1px,transparent 1px);
  background-size:24px 24px;
}
.cta-band > *{position:relative;}
.cta-title{font-family:"Noto Serif SC","Songti SC",serif;font-size:30px;line-height:1.35;font-weight:700;margin:0 0 12px;letter-spacing:-.01em;}
.cta-text{font-size:16px;color:var(--text-muted);margin:0 auto 26px;max-width:600px;line-height:1.9;}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#fff;padding:72px 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:16px;}
.footer-about{font-size:14px;line-height:1.9;color:rgba(255,255,255,.66);margin:0;max-width:330px;}
.footer-col h3{font-size:15px;font-weight:600;margin:0 0 16px;color:#fff;line-height:1.6;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-col a,.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);text-decoration:none;margin:0;}
.footer-col a:hover{color:var(--accent-500);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.52);
}
.footer-bottom a{color:rgba(255,255,255,.68);text-decoration:none;}
.footer-bottom a:hover{color:var(--accent-500);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:50;
  display:inline-flex;align-items:center;gap:8px;height:52px;padding:0 24px;
  border-radius:var(--r-pill);background:var(--accent-600);color:#fff;
  font-size:15px;font-weight:600;text-decoration:none;box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .2s ease,transform .2s ease,background-color .2s ease,visibility .2s ease;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{background:#A2471A;}

/* ---------- 移动抽屉 ---------- */
.overlay{
  position:fixed;inset:0;background:rgba(15,28,27,.45);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.overlay.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:84%;max-width:360px;background:#fff;
  z-index:80;transform:translateX(100%);transition:transform .22s ease;
  border-radius:18px 0 0 18px;padding:24px;box-shadow:var(--sh-3);
  display:flex;flex-direction:column;gap:16px;overflow-y:auto;
}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-title{font-size:16px;font-weight:700;}
.drawer-close{
  width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:#fff;
  font-size:18px;line-height:1;cursor:pointer;color:var(--text);
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  display:block;padding:15px 4px;font-size:16px;color:var(--text);text-decoration:none;
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--primary-600);font-weight:600;}
.drawer .d-search{
  display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;border:1px solid var(--line);
  border-radius:12px;color:var(--text-muted);
}
.drawer .d-search input{border:0;outline:0;width:100%;font-size:15px;font-family:inherit;color:var(--text);background:transparent;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .wrap{padding:0 32px;}
  .nav{padding:0 32px;height:64px;}
  .nav-links,.search{display:none;}
  .burger{display:flex;}
  .hero-inner{padding:48px 0 60px;}
  .hero h1{font-size:38px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;align-items:start;}
  .section{padding:72px 0;}
  .section-title{font-size:28px;}
  .split{grid-template-columns:1fr;gap:40px;}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:28px;padding:32px;}
  .feature{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;}
  .cta-title{font-size:26px;}
}
@media (max-width:639px){
  .page-body{font-size:16px;}
  .wrap{padding:0 20px;}
  .nav{padding:0 20px;height:60px;gap:14px;}
  .brand-text{font-size:16px;}
  .hero-inner{padding:38px 0 52px;}
  .hero h1{font-size:30px;margin-bottom:14px;}
  .hero-lead{font-size:15px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{width:100%;}
  .section{padding:56px 0;}
  .section-title{font-size:26px;padding-left:14px;}
  .section-head{margin-bottom:28px;}
  .form-card{padding:22px;}
  .form-grid{grid-template-columns:1fr;}
  .stat-band{grid-template-columns:1fr;gap:24px;padding:26px;}
  .stat-num{font-size:34px;}
  .faq-q{font-size:16px;padding:18px 2px;}
  .cta-band{padding:38px 22px;}
  .cta-title{font-size:24px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .site-footer{padding:56px 0 96px;}
  .float-cta{
    left:0;right:0;bottom:0;height:56px;border-radius:0;justify-content:center;
    padding:0 16px calc(16px + env(safe-area-inset-bottom));
  }
}