/* roulang page: index */
/* ===== 设计变量 ===== */
:root{
  --bg:#0C0F12;
  --surface:#14181D;
  --surface-2:#1B2128;
  --line:#262E36;
  --text:#EAEFF3;
  --muted:#97A3AD;
  --primary:#2BE0A8;
  --primary-strong:#12C48F;
  --primary-weak:rgba(43,224,168,.12);
  --accent:#FFB020;
  --accent-weak:rgba(255,176,32,.12);
  --violet:#6C5CE7;
  --danger:#FF5C5C;
  --ok:#2BE0A8;
  --light:#F2F5F4;
  --light-text:#0C0F12;
  --radius-card:18px;
  --radius-img:16px;
  --radius-input:12px;
  --radius-pill:999px;
  --shadow-1:0 10px 30px rgba(0,0,0,.45);
  --shadow-2:0 18px 46px rgba(0,0,0,.55);
  --ring:0 0 0 1px var(--primary),0 12px 28px rgba(43,224,168,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,"SFMono-Regular","DIN Alternate",Menlo,Consolas,monospace;
}

/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:radial-gradient(rgba(43,224,168,.06) 1px,transparent 1px);
  background-size:26px 26px;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);object-fit:cover}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{font-weight:700;letter-spacing:-.01em;line-height:1.25}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
::selection{background:var(--primary-weak);color:var(--text)}

/* ===== 容器 / 板块 ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative;z-index:1}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.14em;color:var(--primary);
  text-transform:uppercase;font-weight:600;
}
.eyebrow::before{content:"";width:40px;height:2px;background:var(--primary);border-radius:2px}
.section-head h2{font-size:32px;margin-top:12px}
.section-head p{color:var(--muted);font-size:15px;max-width:640px;margin-top:10px}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--primary);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:color .18s var(--ease);
}
.link-arrow span{transition:transform .18s var(--ease)}
.link-arrow:hover span{transform:translateX(3px)}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
  min-height:44px;
}
.btn-primary{background:var(--primary);color:#05221A}
.btn-primary:hover{background:var(--primary-strong);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-dark{background:var(--light-text);color:var(--primary)}
.btn-dark:hover{background:#1B2128;color:var(--primary)}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;
  border-radius:var(--radius-pill);font-size:11px;font-weight:600;letter-spacing:.02em;
  background:var(--primary-weak);color:var(--primary);
}
.badge-amber{background:var(--accent-weak);color:var(--accent)}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--radius-pill);
  border:1px solid var(--line);background:var(--surface-2);color:var(--muted);font-size:13px;
}

/* ===== 浮动 Dock 导航 ===== */
.dock-wrap{
  position:fixed;top:16px;left:0;right:0;z-index:100;
  display:flex;justify-content:center;padding:0 16px;pointer-events:none;
}
.dock{
  pointer-events:auto;width:min(1160px,100%);
  display:flex;align-items:center;gap:20px;
  background:rgba(20,24,29,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:24px;
  padding:12px 16px 12px 20px;
  transition:padding .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.dock-wrap.is-scrolled .dock{padding:8px 16px 8px 20px;box-shadow:var(--shadow-2);background:rgba(20,24,29,.9)}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.brand-mark{
  width:28px;height:28px;border-radius:9px;flex:none;
  background:linear-gradient(135deg,var(--primary),var(--primary-strong));
  display:grid;place-items:center;color:#05221A;font-size:15px;font-weight:800;
}
.dock-links{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1}
.dock-links a{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  border-radius:12px;color:var(--muted);font-size:15px;font-weight:500;
  transition:color .15s var(--ease),background-color .15s var(--ease);
}
.dock-links a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.dock-links a.is-active{color:var(--text)}
.dock-links a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--primary);border-radius:2px;
}
.dock-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:44px;height:44px;border-radius:var(--radius-pill);border:1px solid var(--line);
  background:transparent;display:grid;place-items:center;cursor:pointer;color:var(--muted);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary)}
.hamburger{display:none;width:44px;height:44px;border-radius:var(--radius-pill);border:1px solid var(--line);background:transparent;cursor:pointer;place-items:center;color:var(--text)}
.hamburger span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:99;background:var(--surface);
  padding:100px 24px 120px;display:none;flex-direction:column;gap:6px;
  overflow-y:auto;
}
.drawer.is-open{display:flex}
.drawer a{
  font-size:18px;line-height:1.6;padding:14px 4px;border-bottom:1px solid var(--line);
  color:var(--text);font-weight:600;
}
.drawer a.is-active{color:var(--primary)}
.drawer-cta{
  position:fixed;left:16px;right:16px;bottom:20px;z-index:101;display:none;
}
.drawer-cta .btn{width:100%}
.drawer-cta.is-open{display:block}

/* ===== Hero ===== */
.hero{padding:150px 0 88px;position:relative;z-index:1;min-height:78vh;display:flex;align-items:center}
.hero::after{
  content:"";position:absolute;top:60px;right:-140px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(43,224,168,.28);pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;width:100%}
.hero h1{font-size:44px;margin:20px 0 20px}
.hero .lead{color:var(--muted);font-size:17px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.hero-trust span{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;
  border-radius:var(--radius-pill);border:1px solid var(--line);background:var(--surface);
  font-size:13px;color:var(--muted);
}
.hero-trust span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;border-radius:var(--radius-img);
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.hero-media::after{
  content:"";position:absolute;inset:auto 0 -10px 0;height:60%;
  background:radial-gradient(closest-side,rgba(43,224,168,.18),transparent);
  filter:blur(6px);pointer-events:none;
}

/* ===== 服务（12 列错落） ===== */
.service-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:var(--primary);box-shadow:0 12px 28px rgba(43,224,168,.18)}
.card-feature{grid-column:span 6;grid-row:span 2;display:flex;flex-direction:column;gap:20px;padding:24px}
.card-feature img{width:100%;aspect-ratio:16/10}
.card-feature h3{font-size:24px;margin-bottom:6px}
.card-feature p{color:var(--muted);font-size:15px}
.card-small{grid-column:span 3;display:flex;flex-direction:column;gap:14px;padding:24px}
.icon-block{
  width:44px;height:44px;border-radius:12px;background:var(--primary-weak);color:var(--primary);
  display:grid;place-items:center;font-size:18px;font-weight:700;
}
.card-small h3{font-size:18px}
.card-small p{color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-small .link-arrow{font-size:14px;margin-top:auto}

/* ===== 优势数据（反色区块） ===== */
.stats{background:var(--light);color:var(--light-text);border-radius:28px;padding:56px 40px}
.stats .eyebrow{color:#0F8F6B}
.stats .eyebrow::before{background:#0F8F6B}
.stats h2{color:var(--light-text);font-size:32px;margin-top:12px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);margin-top:40px}
.stat{padding:0 24px;border-left:1px solid rgba(12,15,18,.12)}
.stat:first-child{border-left:0;padding-left:0}
.stat b{font-family:var(--mono);font-size:40px;font-weight:700;display:block;line-height:1.1;color:#0C0F12}
.stat b em{font-style:normal;font-size:18px;margin-left:2px;color:#0F8F6B}
.stat span{display:block;font-size:13px;color:#3E4A52;margin-top:8px}

/* ===== 案例 ===== */
.case{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:36px 0;border-top:1px solid var(--line)}
.case:first-of-type{border-top:0}
.case.reverse .case-media{order:2}
.case-media img{width:100%;aspect-ratio:16/10;border:1px solid var(--line)}
.case h3{font-size:22px;margin:14px 0 12px}
.case p{color:var(--muted);font-size:15px;margin-bottom:16px}

/* ===== 方案 Tabs ===== */
.tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.tab{
  height:42px;padding:0 20px;border-radius:var(--radius-pill);border:1px solid var(--line);
  background:var(--surface);color:var(--muted);font-size:14px;font-weight:600;cursor:pointer;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.tab:hover{color:var(--text)}
.tab.is-active{background:var(--primary);border-color:var(--primary);color:#05221A}
.tab-panel{display:none;grid-template-columns:1fr 1fr;gap:40px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:36px}
.tab-panel.is-active{display:grid}
.tab-panel h3{font-size:22px;margin-bottom:14px}
.tab-panel p{color:var(--muted);font-size:15px}
.point-list li{
  display:flex;align-items:flex-start;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--text);
}
.point-list li:last-child{border-bottom:0}
.point-list li::before{
  content:"";width:8px;height:8px;border-radius:50%;background:var(--primary);
  margin-top:9px;flex:none;
}

/* ===== 最新信息（CMS 列表） ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.post-card:hover{transform:translateY(-2px);border-color:var(--primary);box-shadow:0 12px 28px rgba(43,224,168,.18)}
.post-cover{margin:0}
.post-cover img{width:100%;aspect-ratio:16/10;border-radius:0}
.post-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-body h3{font-size:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body p{color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);margin-top:auto;font-family:var(--mono)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;padding:56px 24px;text-align:center;
  background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius-card);
}
.empty-state svg{width:48px;height:48px;color:var(--primary)}
.empty-state p{color:var(--muted);font-size:15px}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden;position:relative}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;transition:background-color .18s var(--ease)}
.faq-item.is-open::before{background:var(--primary)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
}
.faq-q .chev{transition:transform .2s var(--ease);color:var(--muted);flex:none}
.faq-item.is-open .chev{transform:rotate(180deg);color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 22px 22px;color:var(--muted);font-size:15px;line-height:1.8}
.faq-item.is-open .faq-a{max-height:340px}

/* ===== 联系 ===== */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:stretch}
.form-card,.info-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:32px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field label{font-size:13px;color:var(--muted)}
.field input,.field select,.field textarea{
  width:100%;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-input);
  padding:12px 14px;font-size:15px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{min-height:110px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-weak);
}
.field.has-error input,.field.has-error textarea{border-color:var(--danger)}
.field .err{font-size:12px;color:var(--danger);display:none}
.field.has-error .err{display:block}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--muted);margin:6px 0 22px}
.check input{width:18px;height:18px;margin-top:3px;accent-color:var(--primary)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.info-card{display:flex;flex-direction:column;gap:18px}
.info-item{display:flex;gap:14px;align-items:flex-start;font-size:15px}
.info-item .icon-block{flex:none}
.info-item span{display:block;color:var(--muted);font-size:13px}
.map-placeholder{
  flex:1;min-height:160px;border-radius:var(--radius-img);border:1px solid var(--line);
  background:linear-gradient(140deg,#161B21,#1B2128);
  display:grid;place-items:center;color:var(--muted);font-size:13px;text-align:center;padding:16px;
}

/* ===== CTA 通栏 ===== */
.cta-band{
  background:linear-gradient(120deg,rgba(43,224,168,.14),rgba(108,92,231,.10));
  border:1px solid var(--line);border-radius:28px;padding:48px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:28px}
.cta-band p{color:var(--muted);font-size:15px;margin-top:10px}

/* ===== 页脚 ===== */
.footer{background:#0A0D10;border-top:1px solid var(--line);margin-top:96px;padding:64px 0 0;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer h4{font-size:15px;margin-bottom:16px}
.footer .brand{margin-bottom:14px}
.footer p{color:var(--muted);font-size:14px;max-width:280px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--muted);font-size:14px;transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:var(--muted);font-size:13px;
}

/* ===== Toast ===== */
.toast{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,20px);
  background:var(--primary);color:#05221A;font-size:14px;font-weight:600;
  padding:12px 22px;border-radius:var(--radius-pill);box-shadow:var(--shadow-2);
  opacity:0;pointer-events:none;transition:opacity .22s var(--ease),transform .22s var(--ease);z-index:200;
}
.toast.is-show{opacity:1;transform:translate(-50%,0)}

/* ===== 响应式 ===== */
@media (max-width:1200px){
  .hero h1{font-size:40px}
  .stats{padding:48px 28px}
  .stat{padding:0 16px}
}
@media (max-width:992px){
  .dock-links{display:none}
  .hamburger{display:grid}
  .dock-actions .icon-btn{display:none}
  .hero{padding:130px 0 64px;min-height:auto}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:36px}
  .card-feature{grid-column:span 12;grid-row:auto}
  .card-small{grid-column:span 6}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px 0}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .case{grid-template-columns:1fr;gap:24px}
  .case.reverse .case-media{order:0}
  .tab-panel.is-active{grid-template-columns:1fr}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .container{padding:0 18px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .section-head h2{font-size:24px}
  .hero h1{font-size:30px}
  .hero .lead{font-size:16px}
  .stats h2{font-size:24px}
  .cta-band{padding:32px 22px}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .card-small{grid-column:span 12}
  .grid-3{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr;gap:20px}
  .stat{border-left:0;padding-left:0;border-top:1px solid rgba(12,15,18,.12);padding-top:16px}
  .stat:first-child{border-top:0;padding-top:0}
  .form-row{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --bg:#0C0F12;
  --surface:#14181D;
  --surface-2:#1B2128;
  --line:#262E36;
  --text:#EAEFF3;
  --muted:#97A3AD;
  --primary:#2BE0A8;
  --primary-strong:#12C48F;
  --primary-weak:rgba(43,224,168,.12);
  --accent:#FFB020;
  --accent-weak:rgba(255,176,32,.12);
  --violet:#6C5CE7;
  --danger:#FF5C5C;
  --radius-card:18px;
  --radius-img:16px;
  --radius-input:12px;
  --shadow-card:0 10px 30px rgba(0,0,0,.45);
  --shadow-hover:0 0 0 1px var(--primary),0 12px 28px rgba(43,224,168,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  background-image:radial-gradient(rgba(43,224,168,.055) 1px,transparent 1px);
  background-size:26px 26px;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);object-fit:cover;}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.28;}
p{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
::selection{background:var(--primary);color:#05221A;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ============ 浮动 Dock 导航 ============ */
.dock-wrap{
  position:fixed;top:16px;left:0;right:0;z-index:90;
  display:flex;justify-content:center;padding:0 16px;
  pointer-events:none;
}
.dock{
  pointer-events:auto;
  width:min(1160px,100%);
  display:flex;align-items:center;gap:18px;
  padding:10px 14px 10px 18px;
  border-radius:24px;
  background:rgba(20,24,29,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:0 8px 26px rgba(0,0,0,.42);
  transition:padding .2s var(--ease),box-shadow .2s var(--ease);
}
.dock-wrap.is-scrolled .dock{padding:6px 14px 6px 18px;box-shadow:0 12px 34px rgba(0,0,0,.6);}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:28px;height:28px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--primary),var(--primary-strong));
  color:#05221A;font-weight:800;font-size:15px;
}
.brand-text{font-weight:700;font-size:16px;letter-spacing:.01em;white-space:nowrap;}
.dock-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1;}
.dock-links a{
  display:inline-block;padding:8px 12px;border-radius:999px;
  font-size:14.5px;color:var(--muted);position:relative;
}
.dock-links a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.dock-links a.is-active{color:var(--text);}
.dock-links a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:var(--primary);
}
.dock-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--muted);
  transition:all .18s var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-weak);}
.hamburger{
  display:none;width:44px;height:44px;border-radius:14px;
  border:1px solid var(--line);align-items:center;justify-content:center;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.hamburger span::before,.hamburger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px;
}
.hamburger span::before{top:-6px;}
.hamburger span::after{top:6px;}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:120;background:var(--surface);
  padding:22px 20px 0;display:none;flex-direction:column;
}
.drawer.is-open{display:flex;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{width:44px;height:44px;border-radius:14px;border:1px solid var(--line);color:var(--text);font-size:20px;}
.drawer-nav a{
  display:block;padding:16px 4px;font-size:18px;line-height:1.6;
  border-bottom:1px solid var(--line);color:var(--text);
}
.drawer-nav a.is-active{color:var(--primary);}
.drawer-cta{margin-top:auto;position:sticky;bottom:0;padding:16px 0 22px;background:var(--surface);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  border-radius:999px;font-size:15px;font-weight:600;
  padding:12px 24px;min-height:44px;
  transition:all .18s var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#05221A;}
.btn-primary:hover{background:var(--primary-strong);box-shadow:0 10px 24px rgba(43,224,168,.28);}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);}
.btn-sm{padding:9px 18px;font-size:14px;min-height:40px;}
.btn-block{width:100%;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;color:var(--primary);
  font-size:14.5px;font-weight:600;
}
.link-more::after{content:"→";transition:transform .18s var(--ease);}
.link-more:hover::after{transform:translateX(3px);}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 8px;
  border-radius:999px;font-size:11px;font-weight:600;line-height:1;
  background:var(--primary-weak);color:var(--primary);
}
.badge-accent{background:var(--accent-weak);color:var(--accent);}
.badge-violet{background:rgba(108,92,231,.16);color:#A99BFF;}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);color:var(--muted);font-size:14px;
  transition:all .18s var(--ease);
}
.chip:hover{border-color:var(--primary);color:var(--primary);}
.chip.is-active{background:var(--primary);border-color:var(--primary);color:#05221A;font-weight:600;}

/* ============ 内页顶部条 ============ */
.page-head{
  padding:132px 0 12px;
}
.crumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--muted);
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{opacity:.5;}
.crumb .now{color:var(--muted);opacity:.85;}

/* ============ 文章头 ============ */
.article-head{padding:22px 0 0;}
.article-head h1{
  font-size:40px;font-weight:800;line-height:1.2;
  min-height:96px;margin:16px 0 18px;letter-spacing:-.01em;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px 18px;
  font-size:13px;color:var(--muted);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line);}
.share-group{display:flex;gap:10px;margin-left:auto;}
.share-btn{
  width:40px;height:40px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--muted);
  transition:all .18s var(--ease);
}
.share-btn:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-weak);}
.head-divider{height:1px;background:var(--line);margin:26px 0 0;}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;
  gap:56px;align-items:start;padding:44px 0 0;
}
.article-body{
  max-width:760px;font-size:16px;line-height:1.9;color:#D7DEE4;
}
.article-body p{margin:0 0 1.4em;}
.article-body h2{
  position:relative;font-size:26px;color:var(--text);
  margin:44px 0 18px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:4px;background:var(--primary);
}
.article-body h3{font-size:20px;color:var(--text);margin:32px 0 14px;}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.article-body strong{color:var(--text);font-weight:700;}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:6px;}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--primary);
}
.article-body ol{counter-reset:ck;}
.article-body ol li{counter-increment:ck;}
.article-body ol li::before{
  content:counter(ck);position:absolute;left:0;top:2px;
  width:16px;height:16px;line-height:16px;text-align:center;border-radius:50%;
  font-size:11px;font-weight:700;background:var(--primary-weak);color:var(--primary);
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;border-left:3px solid var(--primary);
  background:var(--surface-2);border-radius:0 14px 14px 0;color:var(--muted);
}
.article-body img{margin:24px 0;border-radius:var(--radius-img);width:100%;height:auto;}
.article-body figure{margin:24px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;}
.article-body th{background:var(--surface-2);color:var(--text);font-weight:600;}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02);}
.article-body code{
  background:var(--surface-2);border:1px solid var(--line);border-radius:6px;
  padding:2px 6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13.5px;
}
.article-body hr{border:none;border-top:1px solid var(--line);margin:32px 0;}

/* ============ 侧栏 ============ */
.side-col{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;
}
.side-card h3{
  font-size:15px;margin-bottom:14px;display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:16px;height:3px;border-radius:3px;background:var(--primary);
}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:block;padding:7px 10px;border-radius:10px;font-size:13.5px;color:var(--muted);
  border-left:2px solid transparent;
}
.toc-list a:hover{background:rgba(255,255,255,.04);color:var(--text);}
.toc-list a.is-active{color:var(--primary);border-left-color:var(--primary);background:var(--primary-weak);}
.hot-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);}
.hot-item:last-child{border-bottom:none;padding-bottom:0;}
.hot-idx{
  flex-shrink:0;width:24px;height:24px;border-radius:8px;display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;font-family:ui-monospace,Menlo,monospace;
  background:var(--surface-2);color:var(--muted);
}
.hot-item:first-child .hot-idx{background:var(--primary-weak);color:var(--primary);}
.hot-item a{font-size:14px;line-height:1.55;color:#C9D2D9;}
.hot-item a:hover{color:var(--primary);}
.side-tip{font-size:13px;color:var(--muted);line-height:1.8;}

/* ============ 空态 ============ */
.empty-state{
  text-align:center;padding:64px 24px;background:var(--surface);
  border:1px dashed var(--line);border-radius:var(--radius-card);
}
.empty-state .ico{
  width:48px;height:48px;margin:0 auto 16px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary-weak);color:var(--primary);font-size:22px;
}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:20px;}

/* ============ 相关推荐 ============ */
.section{padding:88px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;}
.section-head h2{
  font-size:30px;position:relative;padding-left:0;
}
.section-head h2::before{
  content:"";display:inline-block;width:40px;height:4px;border-radius:4px;
  background:var(--primary);vertical-align:middle;margin-right:14px;
}
.section-head p{color:var(--muted);font-size:14.5px;margin-top:10px;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:0 0 22px;overflow:hidden;transition:all .2s var(--ease);display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.card-cover{width:100%;aspect-ratio:16/10;border-radius:0;margin:0;background:var(--surface-2);}
.card-body{padding:20px 22px 0;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:17px;line-height:1.5;}
.card-body h3 a:hover{color:var(--primary);}
.card-desc{
  font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--muted);margin-top:auto;padding-top:6px;
}

/* ============ CTA 通栏 ============ */
.cta-band{padding:88px 0 0;}
.cta-inner{
  position:relative;overflow:hidden;
  background:linear-gradient(115deg,#14181D 0%,#182A25 60%,#14312A 100%);
  border:1px solid var(--line);border-radius:26px;
  padding:48px 52px;display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.cta-inner::after{
  content:"";position:absolute;right:-90px;top:-120px;width:340px;height:340px;border-radius:50%;
  border:1px solid rgba(43,224,168,.28);
}
.cta-inner h2{font-size:28px;margin-bottom:12px;}
.cta-inner p{color:var(--muted);font-size:15px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-shrink:0;position:relative;z-index:2;}

/* ============ 页脚 ============ */
.footer{
  margin-top:96px;background:#0A0D10;border-top:1px solid var(--line);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
}
.footer p{color:var(--muted);font-size:13.5px;margin-top:14px;max-width:280px;line-height:1.8;}
.footer h4{font-size:14px;margin-bottom:16px;color:var(--text);}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:13.5px;color:var(--muted);}
.footer-links a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .article-layout{gap:36px;grid-template-columns:minmax(0,1fr) 280px;}
}
@media (max-width:992px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .side-col{position:static;margin-top:44px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .dock-links{display:none;}
  .dock-actions .btn-primary{display:none;}
  .hamburger{display:inline-flex;}
  .article-head h1{font-size:32px;min-height:0;}
}
@media (max-width:768px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .page-head{padding:112px 0 8px;}
  .dock{padding:8px 10px 8px 14px;gap:10px;}
  .article-head h1{font-size:27px;line-height:1.32;margin:14px 0 16px;}
  .article-body{font-size:15.5px;line-height:1.85;}
  .article-body h2{font-size:22px;margin-top:34px;}
  .article-body h3{font-size:18px;}
  .section{padding:60px 0 0;}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:26px;}
  .section-head h2{font-size:24px;}
  .card-grid{grid-template-columns:1fr;}
  .cta-band{padding:60px 0 0;}
  .cta-inner{padding:32px 24px;flex-direction:column;align-items:flex-start;gap:24px;}
  .cta-inner h2{font-size:22px;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer{margin-top:64px;padding:48px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .share-group{margin-left:0;width:100%;}
}
@media (max-width:520px){
  .brand-text{font-size:15px;}
  .article-head h1{font-size:24px;}
  .article-meta{font-size:12.5px;gap:8px 12px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category1 */
:root{
  --bg:#0C0F12;
  --surface:#14181D;
  --surface-2:#1B2128;
  --line:#262E36;
  --text:#EAEFF3;
  --muted:#97A3AD;
  --primary:#2BE0A8;
  --primary-strong:#12C48F;
  --primary-weak:rgba(43,224,168,.12);
  --accent:#FFB020;
  --accent-weak:rgba(255,176,32,.12);
  --violet:#6C5CE7;
  --danger:#FF5C5C;
  --ink:#0C0F12;
  --paper:#F2F5F4;
  --radius-card:18px;
  --radius-img:16px;
  --radius-input:12px;
  --radius-dock:24px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --shadow-hover:0 0 0 1px var(--primary),0 12px 28px rgba(43,224,168,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0;}
ul,ol{list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
html{scroll-behavior:smooth;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:radial-gradient(rgba(234,239,243,.06) 1px,transparent 1px);
  background-size:22px 22px;
  opacity:.55;
  pointer-events:none;
  z-index:0;
}
h1,h2,h3,h4{font-weight:700;letter-spacing:-.01em;line-height:1.25;}
h1{font-size:44px;}
h2{font-size:32px;}
h3{font-size:20px;line-height:1.4;}
p{line-height:1.85;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:6px;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:1;
}
.mono{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;}

/* ---------- Dock 导航 ---------- */
.dock-wrap{
  position:fixed;
  top:16px;
  left:0;
  right:0;
  z-index:80;
  display:flex;
  justify-content:center;
  padding:0 16px;
  pointer-events:none;
}
.dock{
  pointer-events:auto;
  width:min(1160px,100%);
  display:flex;
  align-items:center;
  gap:20px;
  padding:12px 16px 12px 20px;
  border-radius:var(--radius-dock);
  border:1px solid var(--line);
  background:rgba(20,24,29,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 8px 26px rgba(0,0,0,.4);
  transition:padding var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.dock-wrap.is-scrolled .dock{
  padding-top:8px;
  padding-bottom:8px;
  box-shadow:0 14px 34px rgba(0,0,0,.55);
  background:rgba(18,22,27,.88);
}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;flex:0 0 auto;}
.brand-mark{
  width:28px;height:28px;
  display:grid;place-items:center;
  border-radius:9px;
  background:linear-gradient(135deg,var(--primary),var(--primary-strong));
  color:#05221A;
  font-size:15px;
  font-weight:800;
  box-shadow:0 4px 14px rgba(43,224,168,.28);
}
.brand-text{font-size:16px;font-weight:700;white-space:nowrap;}
.dock-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:8px;
  flex:1 1 auto;
  min-width:0;
}
.dock-links a{
  display:inline-block;
  position:relative;
  padding:9px 12px;
  font-size:14.5px;
  color:var(--muted);
  border-radius:12px;
  white-space:nowrap;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.dock-links a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:3px;
  height:2px;
  border-radius:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.dock-links a:hover{color:var(--text);background:rgba(255,255,255,.04);}
.dock-links a.is-active{color:var(--text);font-weight:600;}
.dock-links a.is-active::after{transform:scaleX(1);}
.dock-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--muted);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-weak);}
.hamburger{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--line);
  border-radius:12px;
  position:relative;
}
.hamburger span,
.hamburger span::before,
.hamburger span::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:16px;height:2px;
  background:var(--text);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.hamburger span::before{transform:translate(-50%,-6px);}
.hamburger span::after{transform:translate(-50%,6px);}
.hamburger span::before,.hamburger span::after{left:0;top:0;}
.hamburger.is-open span{background:transparent;}
.hamburger.is-open span::before{transform:translate(0,0) rotate(45deg);}
.hamburger.is-open span::after{transform:translate(0,0) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:46px;
  padding:0 24px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  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-primary{background:var(--primary);color:#05221A;box-shadow:0 8px 22px rgba(43,224,168,.22);}
.btn-primary:hover{background:var(--primary-strong);transform:translateY(-2px);box-shadow:0 12px 26px rgba(43,224,168,.3);}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text);}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14.5px;font-weight:600;
}
.btn-text .arrow{transition:transform var(--dur) var(--ease);}
.btn-text:hover .arrow{transform:translateX(3px);}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;position:relative;}
.section-inner{position:relative;z-index:1;}
.sec-head{margin-bottom:40px;}
.sec-head h2{display:flex;align-items:center;gap:14px;}
.sec-head h2::before{
  content:"";
  width:40px;height:3px;
  border-radius:3px;
  background:var(--primary);
  flex:0 0 auto;
}
.sec-head .sec-desc{margin-top:12px;color:var(--muted);font-size:15px;max-width:720px;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;
  padding:168px 0 72px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg,rgba(12,15,18,.72) 0%,rgba(12,15,18,.92) 62%,var(--bg) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
}
.page-hero::after{
  content:"";
  position:absolute;
  top:-140px;right:-100px;
  width:420px;height:420px;
  border-radius:50%;
  border:1px solid rgba(43,224,168,.35);
  box-shadow:0 0 90px rgba(43,224,168,.14) inset;
  pointer-events:none;
}
.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);
  margin-bottom:20px;flex-wrap:wrap;
}
.crumb a{color:var(--muted);transition:color var(--dur) var(--ease);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{opacity:.5;}
.crumb .current{color:var(--muted);}
.page-hero h1{max-width:880px;}
.page-hero .hero-line{
  margin-top:18px;
  max-width:680px;
  color:var(--muted);
  font-size:16.5px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.badge{
  display:inline-flex;align-items:center;
  height:22px;padding:0 10px;
  border-radius:999px;
  font-size:11.5px;font-weight:600;
  letter-spacing:.02em;
  background:var(--primary-weak);
  color:var(--primary);
  border:1px solid rgba(43,224,168,.22);
}
.badge-accent{background:var(--accent-weak);color:var(--accent);border-color:rgba(255,176,32,.24);}

/* ---------- 数据条 ---------- */
.stats-strip{
  border-bottom:1px solid var(--line);
  background:#0A0D10;
}
.stats-scroll{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.stat-item{
  padding:28px 26px;
  border-right:1px solid var(--line);
}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:34px;
  font-weight:700;
  color:var(--primary);
  line-height:1.1;
}
.stat-num small{font-size:15px;color:var(--muted);margin-left:4px;font-weight:600;}
.stat-label{margin-top:8px;font-size:13px;color:var(--muted);}

/* ---------- 筛选 chip ---------- */
.chip-row{
  display:flex;gap:10px;flex-wrap:wrap;
  margin-bottom:36px;
}
.chip{
  display:inline-flex;align-items:center;
  height:38px;padding:0 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--muted);
  font-size:14px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.chip:hover{color:var(--text);border-color:var(--primary);transform:translateY(-2px);}
.chip.is-active{background:var(--primary);border-color:var(--primary);color:#05221A;font-weight:600;}

/* ---------- 卡片栅格 ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:transparent;}
.card-media{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--surface-2);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 260ms var(--ease);}
.card:hover .card-media img{transform:scale(1.04);}
.card-media::after{
  content:"";
  position:absolute;inset:auto 0 0 0;height:52%;
  background:linear-gradient(180deg,transparent,rgba(12,15,18,.72));
  pointer-events:none;
}
.card-tag{position:absolute;top:14px;left:14px;z-index:2;}
.card-body{padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.card-body h3{font-size:18.5px;line-height:1.45;}
.card-body p{color:var(--muted);font-size:14.5px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{
  margin-top:auto;
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;
  padding-top:6px;
}
.card-date{font-size:12.5px;color:var(--muted);font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;}

/* ---------- 分页 ---------- */
.pager{
  display:flex;align-items:center;justify-content:center;
  gap:8px;margin-top:48px;flex-wrap:wrap;
}
.pager a,.pager span{
  min-width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  padding:0 14px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--muted);
  font-size:14px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.pager a:hover{color:var(--primary);border-color:var(--primary);}
.pager .is-current{background:var(--primary);border-color:var(--primary);color:#05221A;font-weight:700;}
.pager .is-disabled{opacity:.45;cursor:not-allowed;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-item.is-open{border-color:rgba(43,224,168,.4);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;
  text-align:left;
  font-size:16.5px;
  font-weight:600;
  position:relative;
  color:var(--text);
}
.faq-q::before{
  content:"";
  position:absolute;left:0;top:14px;bottom:14px;
  width:3px;border-radius:0 3px 3px 0;
  background:var(--primary);
  transform:scaleY(0);
  transform-origin:top center;
  transition:transform var(--dur) var(--ease);
}
.faq-item.is-open .faq-q::before{transform:scaleY(1);}
.faq-q .chev{
  flex:0 0 auto;
  width:22px;height:22px;
  color:var(--muted);
  transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);
}
.faq-item.is-open .faq-q .chev{transform:rotate(180deg);color:var(--primary);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 260ms var(--ease);
}
.faq-a p{
  padding:0 22px 22px 22px;
  color:var(--muted);
  font-size:15px;
  line-height:1.8;
  max-width:760px;
}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:22px;
  border:1px solid var(--line);
  background:
    linear-gradient(120deg,rgba(12,15,18,.94) 0%,rgba(12,15,18,.74) 55%,rgba(12,15,18,.9) 100%),
    url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  padding:52px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-band::after{
  content:"";
  position:absolute;top:-90px;right:-70px;
  width:260px;height:260px;border-radius:50%;
  border:1px solid rgba(43,224,168,.3);
  pointer-events:none;
}
.cta-band h2{font-size:28px;max-width:560px;}
.cta-band p{margin-top:12px;color:var(--muted);font-size:15px;max-width:520px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.footer{
  background:#0A0D10;
  border-top:1px solid var(--line);
  padding:64px 0 28px;
  margin-top:0;
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid var(--line);
}
.footer-grid h4{font-size:15px;margin-bottom:16px;color:var(--text);}
.footer-grid p{color:var(--muted);font-size:13.5px;margin-top:14px;max-width:280px;line-height:1.7;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:var(--muted);font-size:13.5px;transition:color var(--dur) var(--ease);}
.footer-links a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-top:22px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:var(--surface);
  display:flex;
  flex-direction:column;
  padding:26px 22px 90px;
  transform:translateY(-102%);
  transition:transform 260ms var(--ease);
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:32px;}
.drawer-close{
  width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  display:grid;place-items:center;color:var(--text);font-size:20px;
}
.drawer-links{display:flex;flex-direction:column;gap:6px;}
.drawer-links a{
  padding:14px 4px;
  font-size:18px;
  line-height:1.6;
  border-bottom:1px solid var(--line);
  color:var(--text);
}
.drawer-links a.is-active{color:var(--primary);}
.drawer-cta{
  position:fixed;
  left:0;right:0;bottom:0;
  padding:14px 22px calc(14px + env(safe-area-inset-bottom));
  background:rgba(12,15,18,.92);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
}
.drawer-cta .btn{width:100%;}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:100%;}
  .dock-links a{padding:9px 10px;font-size:14px;}
}
@media (max-width:991px){
  h1{font-size:36px;}
  h2{font-size:26px;}
  .section{padding:76px 0;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .stats-scroll{grid-template-columns:repeat(2,1fr);}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
}
@media (max-width:768px){
  .dock-links,.dock .icon-btn,.dock .btn-primary{display:none;}
  .hamburger{display:grid;place-items:center;}
  .dock{padding:10px 12px 10px 16px;}
  .page-hero{padding:132px 0 56px;}
  .cta-band{padding:36px 24px;}
  .cta-band h2{font-size:23px;}
}
@media (max-width:520px){
  h1{font-size:30px;}
  h2{font-size:24px;}
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .card-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .stats-scroll{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);}
  .stat-item:last-child{border-bottom:0;}
  .brand-text{font-size:15px;}
  .cta-actions .btn{width:100%;}
  .cta-actions{width:100%;}
}

/* roulang page: category2 */
:root{
  --bg:#0C0F12;
  --surface:#14181D;
  --surface-2:#1B2128;
  --line:#262E36;
  --text:#EAEFF3;
  --muted:#97A3AD;
  --primary:#2BE0A8;
  --primary-strong:#12C48F;
  --primary-weak:rgba(43,224,168,.12);
  --accent:#FFB020;
  --accent-weak:rgba(255,176,32,.12);
  --violet:#6C5CE7;
  --danger:#FF5C5C;
  --ink:#0C0F12;
  --paper:#F2F5F4;
  --radius-card:18px;
  --radius-img:16px;
  --radius-input:12px;
  --radius-dock:24px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
  --shadow-hover:0 0 0 1px var(--primary),0 12px 28px rgba(43,224,168,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:180ms;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,"SFMono-Regular","DIN Alternate","Roboto Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg);
  background-image:radial-gradient(rgba(234,239,243,.05) 1px,transparent 1px);
  background-size:24px 24px;
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
::selection{background:var(--primary-weak);color:var(--primary)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:768px){.container{padding:0 18px}}

/* ---------- 浮动 Dock 导航 ---------- */
.dock-wrap{
  position:fixed;top:16px;left:0;right:0;z-index:90;
  display:flex;justify-content:center;padding:0 16px;pointer-events:none;
}
.dock{
  pointer-events:auto;
  width:min(1160px,100%);
  display:flex;align-items:center;gap:16px;
  padding:10px 14px 10px 18px;
  border-radius:var(--radius-dock);
  background:rgba(20,24,29,.72);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:padding var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.dock-wrap.is-scrolled .dock{padding:6px 14px 6px 18px;box-shadow:0 10px 30px rgba(0,0,0,.55)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;flex:none}
.brand-mark{
  width:28px;height:28px;border-radius:9px;flex:none;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--primary),var(--primary-strong));
  color:#05221A;font-weight:800;font-size:15px;letter-spacing:0;
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.dock-links{display:flex;align-items:center;gap:2px;margin:0 auto}
.dock-links a{
  position:relative;display:inline-block;
  padding:9px 13px;border-radius:999px;
  font-size:15px;color:var(--muted);white-space:nowrap;
}
.dock-links a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.dock-links a.is-active{color:var(--text)}
.dock-links a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;
  background:var(--primary);border-radius:2px;
}
.dock-actions{display:flex;align-items:center;gap:10px;flex:none}
.icon-btn{
  width:40px;height:40px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--surface-2);border:1px solid var(--line);color:var(--muted);
  transition:all var(--dur) var(--ease);
}
.icon-btn:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-2px)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:all var(--dur) var(--ease);
}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-primary{background:var(--primary);color:#05221A}
.btn-primary:hover{background:var(--primary-strong);transform:translateY(-2px);box-shadow:0 12px 28px rgba(43,224,168,.28)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14.5px;font-weight:600;
}
.btn-link .arw{transition:transform var(--dur) var(--ease)}
.btn-link:hover .arw{transform:translateX(3px)}
.hamburger{
  display:none;width:44px;height:44px;border-radius:12px;position:relative;
  background:var(--surface-2);border:1px solid var(--line);
}
.hamburger span,.hamburger::before,.hamburger::after{
  content:"";position:absolute;left:13px;right:13px;height:2px;border-radius:2px;background:var(--text);
  transition:all var(--dur) var(--ease);
}
.hamburger span{top:50%;transform:translateY(-1px)}
.hamburger::before{top:15px}
.hamburger::after{bottom:15px}
.hamburger.is-open span{opacity:0}
.hamburger.is-open::before{transform:translateY(6px) rotate(45deg)}
.hamburger.is-open::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- 通用板块 ---------- */
main{padding-top:128px;position:relative;z-index:1}
.section{padding:88px 0}
.section-tight{padding:56px 0}
.sec-head{max-width:720px;margin-bottom:40px}
.sec-head h2{font-size:32px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.sec-head h2::before{
  content:"";width:40px;height:2px;border-radius:2px;background:var(--primary);flex:none;
}
.sec-head p{margin-top:14px;color:var(--muted);font-size:15.5px}
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 8px;border-radius:999px;
  font-size:11px;font-weight:600;letter-spacing:.02em;
  background:var(--primary-weak);color:var(--primary);
}
.badge-accent{background:var(--accent-weak);color:var(--accent)}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);color:var(--muted);font-size:14px;
  transition:all var(--dur) var(--ease);
}
.chip:hover{color:var(--text);border-color:#33404a}
.chip.is-current{background:var(--primary);border-color:var(--primary);color:#05221A;font-weight:600}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- 分类介绍条 ---------- */
.hero-bar{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:24px;
  background:linear-gradient(150deg,#161B21 0%,#111519 62%,#0F1417 100%);
  padding:44px 44px 40px;
}
.hero-bar::after{
  content:"";position:absolute;right:-140px;top:-160px;width:400px;height:400px;border-radius:50%;
  background:radial-gradient(circle,rgba(43,224,168,.20),transparent 62%);pointer-events:none;
}
.hero-bar::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--primary),transparent 70%);
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px;position:relative;z-index:1}
.crumbs a:hover{color:var(--primary)}
.crumbs .current{color:var(--muted)}
.hero-grid{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:48px;align-items:start;position:relative;z-index:1}
.hero-bar h1{font-size:40px;line-height:1.2;margin-bottom:16px}
.hero-bar .lead{font-size:17px;color:#C6D0D8;max-width:34ch}
.hero-bar .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.hero-side p{color:var(--muted);font-size:15.5px;line-height:1.9}
.hero-side .facts{display:flex;gap:16px;margin-top:26px;flex-wrap:wrap}
.fact{
  flex:1 1 130px;background:rgba(27,33,40,.72);border:1px solid var(--line);
  border-radius:14px;padding:16px 18px;
}
.fact b{display:block;font-family:var(--mono);font-size:24px;color:var(--primary);line-height:1.2}
.fact span{font-size:12.5px;color:var(--muted)}
@media (max-width:992px){
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .hero-bar{padding:34px 26px}
  .hero-bar h1{font-size:32px}
}
@media (max-width:520px){
  .hero-bar h1{font-size:27px}
  .hero-bar .lead{font-size:15.5px}
}

/* ---------- 流程 + 对比表 ---------- */
.split{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:32px;align-items:start}
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;
}
.panel h3{font-size:20px;margin-bottom:8px}
.panel .panel-sub{color:var(--muted);font-size:14px;margin-bottom:26px}
.timeline{position:relative;padding-left:36px}
.timeline::before{content:"";position:absolute;left:11px;top:12px;bottom:14px;width:1px;background:var(--line)}
.tl-item{position:relative;padding-bottom:26px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-36px;top:0;width:23px;height:23px;border-radius:50%;
  background:var(--bg);border:1px solid var(--primary);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:11.5px;font-weight:700;
}
.tl-item h4{font-size:16.5px;margin-bottom:6px}
.tl-item p{color:var(--muted);font-size:14.5px}
.tl-item .meta{display:inline-block;margin-top:8px;font-size:12.5px;color:var(--accent);font-family:var(--mono)}
.table-wrap{border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--surface)}
.table-scroll{overflow-x:auto}
table.cmp{width:100%;min-width:560px;border-collapse:separate;border-spacing:0;font-size:14.5px}
table.cmp thead th{
  background:var(--surface-2);text-align:left;font-size:13px;font-weight:600;color:#CBD5DC;
  padding:15px 18px;border-bottom:1px solid var(--line);white-space:nowrap;
}
table.cmp tbody td{
  height:52px;padding:0 18px;color:var(--muted);border-bottom:1px solid var(--line);white-space:nowrap;
}
table.cmp tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
table.cmp tbody tr:hover{background:rgba(43,224,168,.05)}
table.cmp tbody tr:last-child td{border-bottom:0}
table.cmp td:first-child{color:var(--text);font-weight:600}
table.cmp td .tag{font-size:12px;font-family:var(--mono);color:var(--primary)}
@media (max-width:992px){
  .split{grid-template-columns:1fr}
}

/* ---------- 两列图文卡 ---------- */
.duo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.media-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;transition:all var(--dur) var(--ease);display:flex;flex-direction:column;
}
.media-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.media-card figure{margin:0;position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
.media-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.media-card:hover img{transform:scale(1.04)}
.media-card .media-body{padding:26px 28px 28px}
.media-card h3{font-size:20px;margin:14px 0 10px}
.media-card p{color:var(--muted);font-size:14.8px}
.check-list{margin:18px 0 20px;display:grid;gap:9px}
.check-list li{position:relative;padding-left:20px;font-size:14.5px;color:#C0CAD2}
.check-list li::before{
  content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--primary);
}
@media (max-width:768px){
  .duo{grid-template-columns:1fr}
  .media-card .media-body{padding:20px}
}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:860px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  overflow:hidden;transition:all var(--dur) var(--ease);
}
.faq-item.is-open{border-color:#31404a;background:var(--surface-2);border-left:3px solid var(--primary)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;background:none;border:0;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text);
}
.faq-q .chev{
  width:9px;height:9px;flex:none;margin-right:2px;
  border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);
  transform:rotate(45deg);transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.faq-item.is-open .chev{transform:rotate(225deg);border-color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;padding:0 22px;color:var(--muted);font-size:15px;transition:max-height .3s var(--ease),padding .3s var(--ease)}
.faq-item.is-open .faq-a{max-height:320px;padding:0 22px 22px}

/* ---------- 表单 ---------- */
.form-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:34px;
}
.form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr)) auto;gap:16px;align-items:end}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-input);
  padding:13px 14px;font-size:15px;color:var(--text);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:#6C7883}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-weak);background:#1F262E;
}
.field.has-error input{border-color:var(--danger)}
.field .err{display:none;margin-top:7px;font-size:12px;color:var(--danger)}
.field.has-error .err{display:block}
.form-note{margin-top:16px;font-size:13px;color:var(--muted)}
@media (max-width:992px){
  .form-grid{grid-template-columns:1fr 1fr}
  .form-grid .submit-cell{grid-column:1 / -1}
}
@media (max-width:600px){
  .form-grid{grid-template-columns:1fr}
  .form-panel{padding:22px}
}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:24px;border:1px solid var(--line);
  padding:56px;
  background-image:linear-gradient(115deg,rgba(12,15,18,.94) 25%,rgba(12,15,18,.72) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.cta-band h2{font-size:30px;max-width:16ch}
.cta-band p{margin-top:14px;color:#BFC9D1;font-size:15.5px;max-width:56ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
@media (max-width:768px){
  .cta-band{padding:32px 24px}
  .cta-band h2{font-size:24px}
}

/* ---------- 页脚 ---------- */
.footer{background:#0A0D10;border-top:1px solid var(--line);margin-top:88px;padding:56px 0 26px;position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer .brand{margin-bottom:14px}
.footer p{color:var(--muted);font-size:14px;max-width:30ch}
.footer h4{font-size:14px;color:var(--text);margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:var(--muted)}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#6C7883;
}
@media (max-width:992px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr}}

/* ---------- 提示条 ---------- */
.toast{
  position:fixed;left:50%;bottom:32px;z-index:130;
  transform:translate(-50%,16px);opacity:0;pointer-events:none;
  background:var(--primary);color:#05221A;font-weight:600;font-size:14px;
  padding:12px 22px;border-radius:999px;box-shadow:0 12px 30px rgba(43,224,168,.25);
  transition:all .24s var(--ease);
}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ---------- 移动端导航 ---------- */
@media (max-width:992px){
  .dock-links a{padding:9px 10px;font-size:14.5px}
}
@media (max-width:768px){
  main{padding-top:112px}
  .hamburger{display:inline-flex}
  .dock{padding:8px 10px 8px 14px;gap:10px}
  .brand-text{font-size:15px}
  .dock-links{
    position:fixed;left:12px;right:12px;top:82px;z-index:95;
    flex-direction:column;align-items:stretch;gap:4px;margin:0;
    background:var(--surface);border:1px solid var(--line);border-radius:20px;
    padding:14px;box-shadow:var(--shadow);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:all var(--dur) var(--ease);
    max-height:70vh;overflow:auto;
  }
  .dock-links.is-open{opacity:1;visibility:visible;transform:none}
  .dock-links a{font-size:17px;padding:14px 12px;border-radius:14px}
  .dock-links a.is-active{background:var(--primary-weak)}
  .dock-links a.is-active::after{display:none}
  .icon-btn{display:none}
}
@media (max-width:480px){
  .dock .btn-sm{display:none}
  .section{padding:60px 0}
  .sec-head h2{font-size:24px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}