/* roulang page: index */
:root{
  --bg:#0A0B0D;
  --panel:#12141A;
  --raise:#1A1D24;
  --primary:#00E0B8;
  --accent:#D8FF4F;
  --text:#F2F0EA;
  --text2:#A7ADB8;
  --muted:#6B7280;
  --line:rgba(242,240,234,.08);
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:ui-monospace,"SF Mono","Roboto Mono","DIN Alternate",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0}
p{margin:0}
::selection{background:rgba(0,224,184,.28);color:#fff}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

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

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,11,13,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.scrolled{background:rgba(10,11,13,.97);box-shadow:0 12px 30px rgba(0,0,0,.5)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;flex-direction:column;line-height:1.1;flex:0 0 auto}
.logo-mark{font-size:19px;font-weight:900;letter-spacing:.02em;color:var(--text)}
.logo-sub{font-size:11px;letter-spacing:.12em;color:var(--text2);margin-top:4px;white-space:nowrap}
.nav-search{
  position:relative;display:flex;align-items:center;
  flex:1 1 auto;max-width:460px;height:42px;
  background:var(--raise);border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:0 6px 0 12px;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);background:#1f232b}
.nav-search .search-icon{flex:0 0 auto;color:var(--muted)}
.nav-search input{
  flex:1 1 auto;min-width:0;height:100%;
  background:transparent;border:0;outline:none;
  color:var(--text);font-size:14px;padding:0 10px;
}
.nav-search input::placeholder{color:var(--muted)}
.search-btn{
  width:32px;height:32px;flex:0 0 auto;border:0;border-radius:7px;
  background:var(--primary);color:#07130f;display:grid;place-items:center;
  cursor:pointer;transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.search-btn:hover{transform:translateY(-1px);box-shadow:0 0 0 2px rgba(0,224,184,.32)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:var(--radius-sm);
  background:var(--raise);border:1px solid var(--line);color:var(--text);
  place-items:center;cursor:pointer;transition:border-color .18s var(--ease),color .18s var(--ease);
}
.menu-toggle:hover{border-color:var(--primary);color:var(--primary)}

.cat-bar{border-top:1px solid var(--line);background:rgba(18,20,26,.62)}
.cat-bar-inner{display:flex;align-items:center;gap:28px;height:46px;overflow-x:auto;scrollbar-width:none}
.cat-bar-inner::-webkit-scrollbar{display:none}
.cat-link{
  position:relative;font-size:14px;color:var(--text2);white-space:nowrap;
  padding:4px 0;transition:color .18s var(--ease);
}
.cat-link:hover{color:var(--text)}
.cat-link.active{color:var(--primary);font-weight:700}
.cat-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;
  background:var(--primary);border-radius:2px;
}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#101218;padding:10px 0 18px}
.mobile-drawer.open{display:block}
.mobile-drawer .drawer-link{
  display:flex;justify-content:space-between;align-items:center;
  padding:13px 0;font-size:15px;color:var(--text2);
  border-bottom:1px solid var(--line);transition:color .18s var(--ease);
}
.mobile-drawer .drawer-link:last-child{border-bottom:0}
.mobile-drawer .drawer-link:hover{color:var(--primary)}
.mobile-drawer .drawer-link.active{color:var(--primary);font-weight:700}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),
             box-shadow .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{background:var(--primary);color:#07130f}
.btn-primary:hover{background:#22f0c8;transform:translateY(-2px);box-shadow:0 0 0 2px rgba(0,224,184,.35)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(242,240,234,.22);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:8px}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:14px;font-weight:700}
.link-arrow .arw{transition:transform .18s var(--ease)}
.link-arrow:hover .arw{transform:translateX(3px)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);min-height:620px;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,11,13,.94) 0%,rgba(10,11,13,.78) 44%,rgba(10,11,13,.35) 100%)}
.hero-grid{position:absolute;inset:0;pointer-events:none;opacity:.04;background-image:linear-gradient(rgba(242,240,234,.7) 1px,transparent 1px),linear-gradient(90deg,rgba(242,240,234,.7) 1px,transparent 1px);background-size:64px 64px}
.hero-inner{position:relative;z-index:2;max-width:760px;padding:96px 0 88px}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;letter-spacing:.12em;color:var(--text2);
  background:rgba(18,20,26,.82);border:1px solid var(--line);
  border-radius:999px;padding:7px 16px;margin-bottom:26px;
}
.hero-badge .pulse-dot{width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 3px rgba(0,224,184,.18)}
.hero-title{
  font-size:clamp(34px,4.8vw,60px);
  line-height:1.14;font-weight:900;letter-spacing:-.02em;
  color:var(--text);
}
.hero-sub{margin-top:22px;font-size:17px;line-height:1.8;color:var(--text2);max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:48px}
.hero-stats li{padding:0 26px;border-left:1px solid rgba(242,240,234,.16)}
.hero-stats li:first-child{padding-left:0;border-left:0}
.hero-stats .num{display:block;font-family:var(--mono);font-size:26px;font-weight:700;letter-spacing:.04em;color:var(--primary);line-height:1.2}
.hero-stats .lbl{display:block;font-size:12px;letter-spacing:.12em;color:var(--muted);margin-top:6px}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0;border-bottom:1px solid var(--line)}
.section-head{max-width:760px}
.section-eyebrow{font-size:12px;letter-spacing:.16em;color:var(--primary);font-weight:700}
.section-title{font-size:clamp(26px,3.1vw,38px);font-weight:800;line-height:1.24;margin-top:14px}
.section-lead{margin-top:16px;color:var(--text2);font-size:16px;max-width:640px}
.section-rule{height:1px;background:var(--line);margin-top:36px}

/* ---------- 玩法三步 ---------- */
.timeline{display:grid;grid-template-columns:repeat(3,1fr);margin-top:8px}
.tl-item{padding:32px 32px 0 0}
.tl-item:not(:first-child){padding-left:32px;border-left:1px solid var(--line)}
.tl-num{font-family:var(--mono);font-size:42px;font-weight:700;line-height:1;letter-spacing:.04em;color:rgba(0,224,184,.92)}
.tl-item h3{margin:18px 0 10px;font-size:20px;font-weight:700}
.tl-item p{color:var(--text2);font-size:15px;line-height:1.85}

/* ---------- 进度轨道 ---------- */
.section-tint{background:linear-gradient(180deg,rgba(18,20,26,.9),rgba(10,11,13,0))}
.progress-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:38px 40px;box-shadow:var(--shadow)}
.pp-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap}
.pp-head h2{font-size:24px;font-weight:800}
.pp-head .pp-note{color:var(--text2);font-size:14px;margin-top:8px}
.pp-value{font-family:var(--mono);color:var(--accent);font-weight:700;line-height:1}
.pp-value .num{font-size:44px;letter-spacing:.04em}
.pp-value .pct{font-size:20px;margin-left:2px}
.track-wrap{position:relative;margin-top:6px}
.track-line{position:absolute;top:9px;left:9px;right:9px;height:2px;border-radius:2px;background:rgba(242,240,234,.1)}
.track-line span{display:block;height:100%;width:75%;border-radius:2px;background:var(--primary);transition:width .6s var(--ease)}
.track-nodes{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.node{position:relative;padding-top:36px}
.node .dot{position:absolute;top:0;left:0;width:20px;height:20px;border-radius:50%;background:var(--panel);border:2px solid rgba(242,240,234,.2)}
.node.done .dot{background:var(--primary);border-color:var(--primary)}
.node.current .dot{border-color:var(--accent);box-shadow:0 0 0 5px rgba(216,255,79,.14);animation:pulseNode 1.6s infinite}
.node h4{font-size:15px;font-weight:700}
.node p{font-size:12px;letter-spacing:.1em;color:var(--muted);margin-top:4px}
.node.done p{color:var(--primary)}
.node.current p{color:var(--accent)}
@keyframes pulseNode{0%,100%{box-shadow:0 0 0 4px rgba(216,255,79,.14)}50%{box-shadow:0 0 0 9px rgba(216,255,79,.05)}}

/* ---------- 数据预览卡 ---------- */
.reward-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.reward-card{
  position:relative;overflow:hidden;border-radius:var(--radius);
  border:1px solid var(--line);background:var(--panel);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.reward-card:hover{transform:translateY(-2px);border-color:rgba(0,224,184,.5);box-shadow:var(--shadow)}
.reward-card img{width:100%;aspect-ratio:16/10;object-fit:cover;opacity:.82}
.reward-meta{position:absolute;left:0;right:0;bottom:0;padding:18px;background:linear-gradient(180deg,rgba(10,11,13,0) 0%,rgba(10,11,13,.94) 78%)}
.reward-value{font-family:var(--mono);font-size:26px;font-weight:700;letter-spacing:.04em;color:var(--accent);line-height:1.1}
.reward-label{font-size:13px;color:var(--text2);margin-top:6px}
.reward-badge{position:absolute;top:12px;left:12px;font-size:11px;letter-spacing:.12em;color:#08120f;background:var(--accent);border-radius:999px;padding:3px 10px;font-weight:700}

/* ---------- 设备对照 ---------- */
.compare{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.compare-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px 32px}
.compare-card h3{font-size:19px;font-weight:800;display:flex;align-items:center;gap:10px}
.compare-card h3 .tag{font-size:11px;letter-spacing:.12em;color:var(--primary);border:1px solid rgba(0,224,184,.45);border-radius:999px;padding:2px 10px;font-weight:700}
.compare-list{margin-top:18px}
.compare-list li{display:flex;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--text2)}
.compare-list li:last-child{border-bottom:0}
.compare-list .mark{flex:0 0 auto;width:18px;height:18px;margin-top:5px;border-radius:5px;background:rgba(0,224,184,.14);color:var(--primary);display:grid;place-items:center;font-size:11px;font-weight:700}
.compare-list.alt .mark{background:rgba(242,240,234,.06);color:var(--muted)}

/* ---------- 列表卡片 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.post-card:hover{transform:translateY(-2px);border-color:rgba(0,224,184,.5);box-shadow:var(--shadow)}
.post-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0d0f13}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-cat{
  position:absolute;top:12px;right:12px;
  font-size:12px;color:var(--primary);
  background:rgba(10,11,13,.82);border:1px solid rgba(0,224,184,.45);
  border-radius:999px;padding:3px 11px;backdrop-filter:blur(6px);
}
.post-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto}
.post-title{
  font-size:17px;font-weight:700;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-excerpt{
  margin-top:10px;font-size:14px;color:var(--text2);line-height:1.8;flex:1 1 auto;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--muted);
}
.post-meta .read-more{color:var(--primary);font-family:inherit;font-weight:700;transition:transform .18s var(--ease)}
.post-card:hover .post-meta .read-more{transform:translateX(3px)}
.empty-state{
  margin-top:48px;min-height:200px;border:1px dashed rgba(242,240,234,.18);
  border-radius:var(--radius);display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;color:var(--muted);font-size:15px;background:rgba(18,20,26,.5);
}
.empty-state .empty-title{color:var(--text2);font-size:16px}

/* ---------- FAQ ---------- */
.faq-list{margin-top:42px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:16px 0;background:none;border:0;
  color:var(--text);font-size:17px;font-weight:600;text-align:left;cursor:pointer;
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-sign{
  flex:0 0 auto;width:26px;height:26px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:7px;color:var(--primary);
  font-size:15px;font-weight:400;transition:background .18s var(--ease),border-color .18s var(--ease);
}
.faq-item.open .faq-sign{background:rgba(0,224,184,.12);border-color:rgba(0,224,184,.5)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-item.open .faq-a{max-height:380px}
.faq-a p{padding:0 46px 22px 0;color:var(--text2);font-size:16px;line-height:1.9}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--panel);border-bottom:1px solid var(--line)}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.05;pointer-events:none;
  background-image:linear-gradient(rgba(242,240,234,.7) 1px,transparent 1px),linear-gradient(90deg,rgba(242,240,234,.7) 1px,transparent 1px);
  background-size:48px 48px;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:44px;padding:76px 0;flex-wrap:wrap}
.cta-copy h2{font-size:clamp(24px,2.9vw,34px);font-weight:900;line-height:1.24}
.cta-copy p{margin-top:14px;color:var(--text2);font-size:16px;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:#08090B;border-top:1px solid var(--line);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo-mark{font-size:18px}
.footer-brand .brand-full{margin-top:16px;font-size:15px;font-weight:700;color:var(--text);letter-spacing:.01em}
.footer-brand p{margin-top:10px;font-size:14px;color:var(--text2);line-height:1.85;max-width:340px}
.footer-title{font-size:12px;letter-spacing:.16em;color:var(--muted);font-weight:700;margin-bottom:16px}
.footer-links a{display:block;font-size:14px;color:var(--text2);padding:6px 0;transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:52px;border-top:1px solid var(--line);padding:24px 0;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font-size:13px;color:var(--muted);
}
.footer-bottom .mono{font-family:var(--mono);letter-spacing:.04em}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .reward-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-brand{grid-column:1 / -1}
  .timeline{grid-template-columns:1fr}
  .tl-item{padding:28px 0 0}
  .tl-item:not(:first-child){padding-left:0;border-left:0;border-top:1px solid var(--line)}
  .compare{grid-template-columns:1fr}
}
@media (max-width:960px){
  .header-inner{height:auto;flex-wrap:wrap;gap:12px;padding-top:12px;padding-bottom:12px}
  .logo{order:1}
  .header-actions{order:2}
  .nav-search{order:3;flex:1 0 100%;max-width:none;height:40px}
  .menu-toggle{display:grid}
  .cat-bar{display:none}
  .section{padding:72px 0}
  .hero{min-height:520px}
  .hero-inner{padding:64px 0 60px}
  .progress-panel{padding:28px 24px}
  .track-nodes{grid-template-columns:repeat(2,1fr);row-gap:26px}
  .track-line{display:none}
  .node{padding-top:28px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .hero{min-height:480px}
  .hero-inner{padding:52px 0 48px}
  .hero-title{font-size:clamp(28px,8.4vw,38px)}
  .hero-sub{font-size:15px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .hero-stats{margin-top:34px}
  .hero-stats li{padding:0 16px}
  .hero-stats li:first-child{padding-left:0}
  .hero-stats .num{font-size:22px}
  .post-grid{grid-template-columns:1fr}
  .reward-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-inner{padding:56px 0;gap:26px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .faq-q{font-size:16px}
  .faq-a p{padding-right:0}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --ink:#0A0B0D;
  --panel:#12141A;
  --raised:#1A1D24;
  --primary:#00E0B8;
  --primary-dim:rgba(0,224,184,.18);
  --lime:#D8FF4F;
  --text:#F2F0EA;
  --muted:#A7ADB8;
  --faint:#6B7280;
  --line:rgba(242,240,234,.08);
  --line-strong:rgba(242,240,234,.16);
  --r-card:14px;
  --r-btn:10px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:124px;
  --font-cn:"HarmonyOS Sans","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"Roboto Mono","DIN Alternate","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-card)}
a{color:inherit;text-decoration:none;transition:color 180ms var(--ease),background-color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease)}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
::selection{background:rgba(0,224,184,.28);color:var(--text)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,11,13,.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background 200ms var(--ease),box-shadow 200ms var(--ease);
}
.site-header.scrolled{background:rgba(10,11,13,.97);box-shadow:0 12px 28px rgba(0,0,0,.42)}
.header-inner{display:flex;align-items:center;gap:22px;height:72px}
.logo{display:flex;flex-direction:column;justify-content:center;gap:1px;flex:0 0 auto;line-height:1.25}
.logo-mark{font-size:19px;font-weight:900;letter-spacing:.02em;color:var(--text)}
.logo-sub{font-size:11px;letter-spacing:.12em;color:var(--muted);font-weight:500}
.logo:hover .logo-sub{color:var(--primary)}
.nav-search{position:relative;display:flex;align-items:center;flex:1 1 auto;max-width:520px;min-width:180px}
.nav-search input[type="search"]{
  width:100%;height:44px;border-radius:var(--r-btn);
  background:var(--raised);border:1px solid var(--line);
  color:var(--text);font-size:14px;padding:0 54px 0 44px;
  transition:border-color 180ms var(--ease),background-color 180ms var(--ease);
  appearance:none;
}
.nav-search input::placeholder{color:var(--faint)}
.nav-search input:focus{outline:none;border-color:var(--primary);background:#1D2129}
.nav-search .search-icon{position:absolute;left:15px;color:var(--faint);pointer-events:none}
.search-btn{
  position:absolute;right:6px;width:32px;height:32px;border-radius:8px;
  background:var(--primary);color:#07110F;display:flex;align-items:center;justify-content:center;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background-color 180ms var(--ease);
}
.search-btn:hover{box-shadow:0 0 0 2px rgba(0,224,184,.35)}
.search-btn:active{transform:translateY(1px)}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto;flex:0 0 auto}
.menu-toggle{
  display:none;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);color:var(--text);align-items:center;justify-content:center;
  transition:border-color 180ms var(--ease),color 180ms var(--ease);
}
.menu-toggle:hover{border-color:var(--primary);color:var(--primary)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:14px;font-weight:700;letter-spacing:.02em;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background-color 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease);
}
.btn-sm{min-height:38px;padding:0 16px;font-size:13px}
.btn-primary{background:var(--primary);color:#07110F;border:1px solid var(--primary)}
.btn-primary:hover{background:#3BEDCB;box-shadow:0 0 0 2px rgba(0,224,184,.35)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line-strong)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-ghost:active{transform:translateY(1px)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:700}
.link-arrow svg{transition:transform 180ms var(--ease)}
.link-arrow:hover svg{transform:translateX(3px)}
.cat-bar{border-top:1px solid var(--line);position:relative}
.cat-bar-inner{display:flex;align-items:center;gap:30px;height:52px;overflow-x:auto;scrollbar-width:none}
.cat-bar-inner::-webkit-scrollbar{display:none}
.cat-link{
  position:relative;flex:0 0 auto;font-size:14px;color:var(--muted);padding:4px 0;white-space:nowrap;
  transition:color 180ms var(--ease);
}
.cat-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--primary);
  transform:scaleX(0);transform-origin:left;transition:transform 200ms var(--ease);
}
.cat-link:hover{color:var(--text)}
.cat-link:hover::after,.cat-link.active::after{transform:scaleX(1)}
.cat-link.active{color:var(--primary)}
.read-progress{position:absolute;left:0;bottom:-1px;height:2px;width:0;background:var(--primary);z-index:2;transition:width 120ms linear}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:rgba(18,20,26,.98);padding:10px 0 22px}
.mobile-drawer.open{display:block}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 2px;font-size:15px;color:var(--muted);border-bottom:1px solid var(--line);
}
.drawer-link:last-child{border-bottom:0}
.drawer-link.active,.drawer-link:hover{color:var(--primary)}
.drawer-search{margin:14px 0 6px}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;overflow:hidden;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,11,13,.95) 0%,rgba(10,11,13,.86) 46%,rgba(10,11,13,.55) 100%);
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(to right,rgba(242,240,234,.7) 1px,transparent 1px),linear-gradient(to bottom,rgba(242,240,234,.7) 1px,transparent 1px);
  background-size:64px 64px;
}
.article-hero-inner{position:relative;z-index:2;padding:38px 0 46px;max-width:840px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--faint);margin-bottom:22px}
.breadcrumb a{color:var(--faint)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:rgba(107,114,128,.6)}
.breadcrumb .current{color:var(--muted)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:18px}
.pill{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;font-weight:700;
  border:1px solid var(--primary-dim);color:var(--primary);background:rgba(0,224,184,.07);
}
.pill-lime{background:var(--lime);color:#14180A;border:1px solid var(--lime)}
.meta-text{font-size:13px;color:var(--faint);display:inline-flex;align-items:center;gap:6px}
.article-title{
  font-size:clamp(28px,4.2vw,48px);
  line-height:1.22;font-weight:900;letter-spacing:-.015em;margin:0 0 20px;
  color:var(--text);
}
.hero-sub{margin:0;font-size:15px;color:var(--muted);max-width:640px;line-height:1.8}
.hero-rule{position:relative;z-index:2;height:1px;background:var(--line);max-width:840px}

/* ---------- article body ---------- */
.article-section{padding:56px 0 72px}
.article-layout{max-width:780px;margin:0 auto}
.article-body{
  font-size:17px;line-height:1.9;color:#DCDAE0;
}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em;color:#D3D1D7}
.article-body h2{
  font-size:26px;line-height:1.35;font-weight:800;color:var(--text);
  margin:40px 0 16px;padding-top:8px;letter-spacing:-.01em;
  border-top:1px solid var(--line);
  padding-top:26px;
}
.article-body h3{font-size:20px;font-weight:700;color:var(--text);margin:30px 0 12px}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(0,224,184,.35)}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:4px;list-style:none}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin:0 0 .55em;color:#D3D1D7}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;background:var(--primary);border-radius:2px}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:0;color:var(--primary);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;font-weight:700;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;border-left:3px solid var(--primary);
  background:rgba(255,255,255,.03);border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--muted);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{margin:26px auto;border-radius:var(--r-card);border:1px solid var(--line)}
.article-body figure{margin:26px 0}
.article-body figcaption{text-align:center;font-size:12px;color:var(--faint);margin-top:12px}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-body th{background:var(--raised);color:var(--text);font-weight:700}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.025)}
.article-body code{font-family:var(--font-mono);font-size:14px;background:var(--raised);padding:2px 6px;border-radius:6px;color:var(--primary)}
.article-body .tip,.article-body .notice{
  display:block;margin:26px 0;padding:16px 20px;border-radius:12px;
  background:rgba(0,224,184,.07);border:1px solid rgba(0,224,184,.28);color:#CFEDE5;font-size:15px;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0}

.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:48px;padding-top:28px;border-top:1px solid var(--line);
}
.foot-note{font-size:13px;color:var(--faint);max-width:460px;line-height:1.7}

.empty-state{
  border:1px dashed rgba(242,240,234,.22);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;background:rgba(255,255,255,.015);
}
.empty-state h2{font-size:22px;font-weight:800;margin:0 0 10px;border:0;padding:0;color:var(--text)}
.empty-state p{color:var(--muted);margin:0 0 22px}

/* ---------- related ---------- */
.section{padding:0 0 88px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.section-title-block{border-left:1px solid var(--primary);padding-left:18px}
.section-no{font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--primary);display:block;margin-bottom:6px}
.section-title{font-size:clamp(22px,2.6vw,30px);font-weight:800;margin:0;letter-spacing:-.01em}
.section-desc{margin:8px 0 0;font-size:14px;color:var(--muted);max-width:560px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),background-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:rgba(0,224,184,.5);background:#161A21;box-shadow:var(--shadow)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--raised)}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 320ms var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-media .pill{position:absolute;top:12px;left:12px;background:rgba(10,11,13,.82);backdrop-filter:blur(6px)}
.card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:17px;font-weight:700;line-height:1.5;margin:0;color:var(--text)}
.card-text{font-size:14px;color:var(--muted);line-height:1.7;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:8px;font-size:12px;color:var(--faint)}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:18px;
  background:linear-gradient(120deg,#12141A 0%,#161B22 100%);
  padding:44px 40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  margin-bottom:88px;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(to right,rgba(242,240,234,.8) 1px,transparent 1px),linear-gradient(to bottom,rgba(242,240,234,.8) 1px,transparent 1px);
  background-size:48px 48px;
}
.cta-copy{position:relative;z-index:2;max-width:600px}
.cta-copy h2{font-size:clamp(22px,3vw,32px);font-weight:900;margin:0 0 10px;letter-spacing:-.01em}
.cta-copy p{margin:0;color:var(--muted);font-size:15px}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:#08090B;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo-mark{display:block;margin-bottom:6px}
.brand-full{font-size:13px;letter-spacing:.1em;color:var(--primary);margin-bottom:14px}
.footer-brand p{margin:0;font-size:14px;color:var(--faint);line-height:1.85;max-width:300px}
.footer-title{font-size:13px;letter-spacing:.14em;color:var(--text);font-weight:700;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--muted)}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0 28px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--faint);
}
.footer-bottom .mono{color:rgba(107,114,128,.85)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .card-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:960px){
  :root{--nav-h:60px}
  .header-inner{height:60px;gap:14px}
  .nav-search{display:none}
  .menu-toggle{display:flex}
  .cat-bar{display:none}
  .drawer-search{display:flex!important}
  .header-actions .btn-primary{display:none}
  .article-hero-inner{padding:28px 0 36px}
  .article-section{padding:40px 0 56px}
  .cta-band{padding:32px 24px;margin-bottom:64px}
  .section{padding-bottom:64px}
}
@media (max-width:768px){
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:22px}
  .article-body h3{font-size:18px}
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .article-body table{font-size:14px}
  .article-body th,.article-body td{padding:9px 10px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .article-title{font-size:26px}
  .meta-row{gap:10px}
  .btn{width:100%}
  .header-actions .btn-sm{display:none}
  .article-foot .btn{width:auto}
  .cta-actions{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* roulang page: category1 */
:root{
    --bg:#0A0B0D;
    --panel:#12141A;
    --raise:#1A1D24;
    --primary:#00E0B8;
    --primary-soft:#3CEBCB;
    --lime:#D8FF4F;
    --text:#F2F0EA;
    --muted:#A7ADB8;
    --dim:#6B7280;
    --line:rgba(242,240,234,0.08);
    --line-strong:rgba(242,240,234,0.16);
    --radius-card:14px;
    --radius-btn:10px;
    --shadow-card:0 18px 40px rgba(0,0,0,.45);
    --ease:cubic-bezier(.2,.7,.3,1);
    --header-h:72px;
    --catbar-h:48px;
    --font-mono:"Roboto Mono","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  }

  *,*::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:"HarmonyOS Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16.5px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
  ul,ol{list-style:none;}
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;border:0;}
  button{font-family:inherit;cursor:pointer;}
  input,button{font-size:inherit;}
  :focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  .mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em;}

  /* ============ 头部 ============ */
  .site-header{
    position:sticky;
    top:0;
    z-index:80;
    background:rgba(10,11,13,.88);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    transition:background 200ms var(--ease),box-shadow 200ms var(--ease);
  }
  .site-header.scrolled{
    background:rgba(10,11,13,.96);
    box-shadow:0 12px 30px rgba(0,0,0,.55);
  }
  .header-inner{
    display:flex;
    align-items:center;
    gap:24px;
    height:var(--header-h);
  }
  .logo{display:flex;flex-direction:column;gap:2px;flex:0 0 auto;}
  .logo-mark{
    font-size:20px;
    font-weight:900;
    letter-spacing:.02em;
    line-height:1.15;
    color:var(--text);
  }
  .logo-sub{
    font-size:11px;
    letter-spacing:.12em;
    color:var(--muted);
    line-height:1.2;
    white-space:nowrap;
  }
  .logo:hover .logo-mark{color:var(--primary);}

  .nav-search{
    position:relative;
    display:flex;
    align-items:center;
    flex:1 1 auto;
    max-width:520px;
    height:42px;
    margin:0 auto;
    background:var(--raise);
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    padding-left:42px;
    padding-right:6px;
    transition:border-color 180ms var(--ease),background 180ms var(--ease);
  }
  .nav-search:focus-within{border-color:var(--primary);background:#1D2129;}
  .search-icon{
    position:absolute;
    left:14px;
    top:50%;
    transform:translateY(-50%);
    color:var(--dim);
    pointer-events:none;
    transition:color 180ms var(--ease);
  }
  .nav-search:focus-within .search-icon{color:var(--primary);}
  .nav-search input{
    flex:1 1 auto;
    min-width:0;
    height:100%;
    background:transparent;
    border:0;
    color:var(--text);
    font-size:14.5px;
    outline:none;
  }
  .nav-search input::placeholder{color:var(--dim);}
  .search-btn{
    width:32px;
    height:32px;
    flex:0 0 32px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    border:0;
    border-radius:8px;
    background:var(--primary);
    color:#06110E;
    transition:background 160ms var(--ease),transform 160ms var(--ease);
  }
  .search-btn:hover{background:var(--primary-soft);}
  .search-btn:active{transform:translateY(1px);}

  .header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:44px;
    padding:0 22px;
    border-radius:var(--radius-btn);
    border:1px solid transparent;
    font-size:15px;
    font-weight:700;
    letter-spacing:.01em;
    white-space:nowrap;
    transition:transform 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),box-shadow 180ms var(--ease);
  }
  .btn-primary{background:var(--primary);color:#06110E;}
  .btn-primary:hover{background:var(--primary-soft);box-shadow:0 0 0 2px rgba(0,224,184,.32);transform:translateY(-2px);}
  .btn-primary:active{transform:translateY(-1px);}
  .btn-ghost{border-color:var(--line-strong);background:transparent;color:var(--text);}
  .btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(-1px);}
  .btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
  .btn-lg{min-height:50px;padding:0 28px;font-size:16px;border-radius:11px;}

  .menu-toggle{
    display:none;
    width:42px;
    height:42px;
    align-items:center;
    justify-content:center;
    background:var(--raise);
    border:1px solid var(--line);
    border-radius:9px;
    color:var(--text);
    transition:border-color 180ms var(--ease),color 180ms var(--ease);
  }
  .menu-toggle:hover{border-color:var(--primary);color:var(--primary);}

  .cat-bar{
    border-top:1px solid var(--line);
    background:rgba(18,20,26,.5);
  }
  .cat-bar-inner{
    display:flex;
    align-items:center;
    gap:28px;
    height:var(--catbar-h);
    overflow-x:auto;
    scrollbar-width:none;
  }
  .cat-bar-inner::-webkit-scrollbar{display:none;}
  .cat-link{
    position:relative;
    flex:0 0 auto;
    font-size:14px;
    color:var(--muted);
    line-height:var(--catbar-h);
    border-bottom:2px solid transparent;
    transition:color 180ms var(--ease),border-color 180ms var(--ease);
  }
  .cat-link:hover{color:var(--text);}
  .cat-link.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:700;}

  .mobile-drawer{
    display:none;
    border-top:1px solid var(--line);
    background:var(--panel);
    padding:16px 0 22px;
  }
  .mobile-drawer.open{display:block;}
  .drawer-search{
    display:flex;
    align-items:center;
    gap:8px;
    height:42px;
    background:var(--raise);
    border:1px solid var(--line);
    border-radius:var(--radius-btn);
    padding:0 6px 0 14px;
    margin-bottom:14px;
  }
  .drawer-search input{
    flex:1 1 auto;
    min-width:0;
    background:transparent;
    border:0;
    color:var(--text);
    outline:none;
    font-size:14px;
  }
  .drawer-search input::placeholder{color:var(--dim);}
  .drawer-link{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:13px 4px;
    font-size:15.5px;
    color:var(--muted);
    border-bottom:1px solid var(--line);
  }
  .drawer-link:last-child{border-bottom:0;}
  .drawer-link.active{color:var(--primary);font-weight:700;}

  /* ============ Hero ============ */
  .hero{
    position:relative;
    min-height:320px;
    display:flex;
    align-items:flex-end;
    padding:64px 0 44px;
    background-image:url('/assets/images/backpic/back-1.png');
    background-size:cover;
    background-position:center;
    border-bottom:1px solid var(--line);
    overflow:hidden;
  }
  .hero::before{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(90deg,rgba(10,11,13,.95) 0%,rgba(10,11,13,.78) 52%,rgba(10,11,13,.48) 100%);
  }
  .hero::after{
    content:"";
    position:absolute;
    inset:0;
    background-image:linear-gradient(rgba(242,240,234,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(242,240,234,.5) 1px,transparent 1px);
    background-size:64px 64px;
    opacity:.04;
    pointer-events:none;
  }
  .hero-inner{position:relative;z-index:2;max-width:760px;}
  .crumb{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--dim);
    margin-bottom:18px;
  }
  .crumb a{color:var(--dim);transition:color 160ms var(--ease);}
  .crumb a:hover{color:var(--primary);}
  .crumb .sep{opacity:.6;}
  .crumb .cur{color:var(--muted);}

  .hero h1{
    font-size:clamp(30px,4.4vw,48px);
    font-weight:900;
    line-height:1.14;
    letter-spacing:-.015em;
    margin:14px 0 16px;
  }
  .hero h1 .accent{color:var(--primary);}
  .hero-sub{
    font-size:16.5px;
    color:var(--muted);
    max-width:620px;
    line-height:1.8;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

  .badge{
    display:inline-flex;
    align-items:center;
    gap:7px;
    border-radius:999px;
    font-size:12px;
    letter-spacing:.08em;
    padding:6px 13px;
    line-height:1.4;
  }
  .badge-line{border:1px solid rgba(0,224,184,.45);color:var(--primary);}
  .badge-lime{background:var(--lime);color:#1A1D24;font-weight:800;}
  .badge-dot{
    width:6px;height:6px;border-radius:50%;background:var(--primary);
    box-shadow:0 0 0 3px rgba(0,224,184,.16);
  }

  /* ============ 页内锚点条 ============ */
  .anchor-bar{
    position:sticky;
    top:calc(var(--header-h) + var(--catbar-h));
    z-index:60;
    background:rgba(18,20,26,.94);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
  }
  .anchor-inner{
    display:flex;
    align-items:center;
    gap:22px;
    height:52px;
    overflow-x:auto;
    scrollbar-width:none;
  }
  .anchor-inner::-webkit-scrollbar{display:none;}
  .anchor-inner .anchor-label{
    flex:0 0 auto;
    font-size:11.5px;
    letter-spacing:.16em;
    color:var(--dim);
    text-transform:uppercase;
  }
  .anchor-link{
    flex:0 0 auto;
    font-size:13.5px;
    color:var(--muted);
    padding:4px 0;
    border-bottom:1px solid transparent;
    transition:color 160ms var(--ease),border-color 160ms var(--ease);
  }
  .anchor-link:hover{color:var(--primary);border-bottom-color:var(--primary);}

  /* ============ 板块通用 ============ */
  .section{padding:88px 0;}
  .section.tight{padding:64px 0;}
  .section-line{border-top:1px solid var(--line);}
  .sec-head{margin-bottom:44px;max-width:820px;}
  .sec-num{
    display:block;
    font-family:var(--font-mono);
    font-size:12px;
    letter-spacing:.22em;
    color:var(--primary);
    margin-bottom:14px;
  }
  .sec-title{
    font-size:clamp(25px,3.1vw,36px);
    font-weight:800;
    line-height:1.28;
    letter-spacing:-.01em;
    padding-left:18px;
    border-left:1px solid var(--primary);
  }
  .sec-desc{
    margin-top:16px;
    padding-left:19px;
    color:var(--muted);
    font-size:15.5px;
    max-width:720px;
    line-height:1.85;
  }
  .scroll-anchor{scroll-margin-top:190px;}

  /* ============ 规则列表 ============ */
  .rule-list{
    border-top:1px solid var(--line);
  }
  .rule-row{
    display:grid;
    grid-template-columns:96px minmax(0,1fr);
    gap:24px;
    padding:28px 0;
    border-bottom:1px solid var(--line);
    transition:background 180ms var(--ease);
  }
  .rule-row:hover{background:rgba(255,255,255,.018);}
  .rule-idx{
    font-family:var(--font-mono);
    font-size:19px;
    color:var(--primary);
    letter-spacing:.06em;
    line-height:1.5;
    padding-left:2px;
  }
  .rule-title{
    font-size:18px;
    font-weight:700;
    line-height:1.6;
    margin-bottom:6px;
  }
  .rule-text{
    font-size:15.5px;
    color:var(--muted);
    line-height:1.85;
  }
  .rule-tag{
    display:inline-block;
    margin-left:10px;
    font-size:11.5px;
    letter-spacing:.08em;
    color:var(--lime);
    border:1px solid rgba(216,255,79,.35);
    border-radius:999px;
    padding:1px 9px;
    vertical-align:middle;
    font-weight:700;
  }

  /* ============ 时间线 ============ */
  .timeline{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:0;
    border-top:1px solid var(--line);
  }
  .step{
    position:relative;
    padding:30px 24px 30px 0;
    border-right:1px solid var(--line);
  }
  .step:last-child{border-right:0;}
  .step-no{
    display:block;
    font-family:var(--font-mono);
    font-size:30px;
    font-weight:700;
    letter-spacing:.02em;
    color:rgba(242,240,234,.16);
    line-height:1;
    margin-bottom:16px;
    transition:color 200ms var(--ease);
  }
  .step:hover .step-no{color:var(--primary);}
  .step-title{
    font-size:17.5px;
    font-weight:700;
    line-height:1.5;
    margin-bottom:8px;
  }
  .step-text{
    font-size:14.5px;
    color:var(--muted);
    line-height:1.8;
  }
  .step-flag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-top:14px;
    font-size:12px;
    letter-spacing:.06em;
    color:var(--dim);
  }
  .step-flag i{
    width:5px;height:5px;border-radius:50%;
    background:var(--dim);
    display:inline-block;
    font-style:normal;
  }
  .step.done .step-flag i{background:var(--primary);box-shadow:0 0 0 3px rgba(0,224,184,.14);}
  .step.done .step-no{color:var(--primary);}

  /* ============ 图文块 ============ */
  .split{
    display:grid;
    grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
    gap:48px;
    align-items:center;
  }
  .split-media{
    position:relative;
    border-radius:var(--radius-card);
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--raise);
    box-shadow:var(--shadow-card);
  }
  .split-media img{
    width:100%;
    aspect-ratio:16/10;
    object-fit:cover;
  }
  .split-media::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg,rgba(10,11,13,0) 45%,rgba(10,11,13,.62) 100%);
  }
  .split-media .media-tag{
    position:absolute;
    left:16px;
    bottom:16px;
    z-index:2;
  }
  .check-list{margin-top:22px;border-top:1px solid var(--line);}
  .check-item{
    display:grid;
    grid-template-columns:24px minmax(0,1fr);
    gap:14px;
    padding:16px 0;
    border-bottom:1px solid var(--line);
    font-size:15.5px;
    color:var(--muted);
    line-height:1.8;
  }
  .check-item strong{color:var(--text);font-weight:700;}
  .check-mark{
    width:18px;height:18px;
    margin-top:6px;
    border-radius:5px;
    background:rgba(0,224,184,.14);
    border:1px solid rgba(0,224,184,.4);
    position:relative;
  }
  .check-mark::after{
    content:"";
    position:absolute;
    left:5px;top:1.5px;
    width:5px;height:9px;
    border-right:2px solid var(--primary);
    border-bottom:2px solid var(--primary);
    transform:rotate(40deg);
  }

  /* ============ FAQ ============ */
  .faq-wrap{border-top:1px solid var(--line);}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    min-height:64px;
    padding:16px 2px;
    background:transparent;
    border:0;
    text-align:left;
    color:var(--text);
    font-size:16.5px;
    font-weight:700;
    line-height:1.6;
    transition:color 180ms var(--ease);
  }
  .faq-q:hover{color:var(--primary);}
  .faq-icon{
    flex:0 0 26px;
    width:26px;height:26px;
    border-radius:50%;
    border:1px solid var(--line-strong);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-family:var(--font-mono);
    font-size:15px;
    font-weight:400;
    color:var(--muted);
    transition:border-color 180ms var(--ease),color 180ms var(--ease),background 180ms var(--ease);
  }
  .faq-item.open .faq-q{color:var(--primary);}
  .faq-item.open .faq-icon{
    border-color:var(--primary);
    color:var(--primary);
    background:rgba(0,224,184,.08);
  }
  .faq-a{
    display:none;
    padding:0 2px 24px;
    max-width:760px;
    color:var(--muted);
    font-size:15.5px;
    line-height:1.9;
  }
  .faq-item.open .faq-a{display:block;}

  /* ============ 相关栏目 ============ */
  .rel-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:24px;
  }
  .rel-card{
    display:flex;
    flex-direction:column;
    background:var(--panel);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    overflow:hidden;
    transition:transform 180ms var(--ease),border-color 180ms var(--ease),background 180ms var(--ease),box-shadow 180ms var(--ease);
  }
  .rel-card:hover{
    transform:translateY(-2px);
    border-color:var(--primary);
    background:#15181F;
    box-shadow:var(--shadow-card);
  }
  .rel-card img{
    width:100%;
    aspect-ratio:16/9;
    object-fit:cover;
    border-bottom:1px solid var(--line);
  }
  .rel-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
  .rel-body h3{font-size:17px;font-weight:700;line-height:1.55;}
  .rel-body p{font-size:14px;color:var(--muted);line-height:1.8;flex:1 1 auto;}
  .rel-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:13.5px;
    font-weight:700;
    color:var(--primary);
  }
  .rel-link span.arw{transition:transform 180ms var(--ease);}
  .rel-card:hover .rel-link span.arw{transform:translateX(3px);}

  /* ============ CTA ============ */
  .cta-panel{
    position:relative;
    border:1px solid var(--line);
    border-radius:18px;
    background:
      linear-gradient(112deg,rgba(0,224,184,.10) 0%,rgba(10,11,13,0) 46%),
      var(--panel);
    padding:56px 48px;
    overflow:hidden;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:40px;
  }
  .cta-panel::after{
    content:"";
    position:absolute;
    inset:0;
    background-image:linear-gradient(rgba(242,240,234,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(242,240,234,.5) 1px,transparent 1px);
    background-size:56px 56px;
    opacity:.035;
    pointer-events:none;
  }
  .cta-text{position:relative;z-index:2;max-width:640px;}
  .cta-text h2{
    font-size:clamp(24px,2.8vw,32px);
    font-weight:800;
    line-height:1.3;
    margin-bottom:10px;
  }
  .cta-text p{color:var(--muted);font-size:15.5px;line-height:1.85;}
  .cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px;}

  /* ============ 页脚 ============ */
  .site-footer{
    border-top:1px solid var(--line);
    background:var(--panel);
    padding:64px 0 0;
    margin-top:24px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1fr;
    gap:40px;
    padding-bottom:48px;
  }
  .footer-brand .logo-mark{font-size:19px;}
  .footer-brand .brand-full{
    font-size:12px;
    letter-spacing:.12em;
    color:var(--muted);
    margin:6px 0 16px;
  }
  .footer-brand p{
    font-size:14px;
    color:var(--dim);
    line-height:1.85;
    max-width:340px;
  }
  .footer-title{
    font-size:12px;
    letter-spacing:.16em;
    color:var(--dim);
    margin-bottom:16px;
  }
  .footer-links{display:flex;flex-direction:column;gap:11px;}
  .footer-links a{
    font-size:14.5px;
    color:var(--muted);
    transition:color 160ms var(--ease);
  }
  .footer-links a:hover{color:var(--primary);}
  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    padding:20px 0 26px;
    border-top:1px solid var(--line);
    font-size:13px;
    color:var(--dim);
  }

  /* ============ 动效 ============ */
  @keyframes fadeUp{
    from{opacity:0;transform:translateY(10px);}
    to{opacity:1;transform:translateY(0);}
  }
  .anim{animation:fadeUp 620ms var(--ease) both;}
  .anim-1{animation-delay:60ms;}
  .anim-2{animation-delay:120ms;}
  .anim-3{animation-delay:180ms;}

  .reveal{opacity:0;transform:translateY(10px);transition:opacity 560ms var(--ease),transform 560ms var(--ease);}
  .reveal.in{opacity:1;transform:translateY(0);}

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

  /* ============ 响应式 ============ */
  @media (max-width:1024px){
    .section{padding:72px 0;}
    .split{gap:34px;}
    .timeline{grid-template-columns:repeat(2,minmax(0,1fr));}
    .step{padding:26px 24px 26px 0;}
    .step:nth-child(2n){border-right:0;}
    .step:nth-child(1),.step:nth-child(2){border-bottom:1px solid var(--line);}
    .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
    .cta-panel{flex-direction:column;align-items:flex-start;padding:44px 34px;}
  }

  @media (max-width:960px){
    :root{--header-h:60px;}
    .nav-search{display:none;}
    .menu-toggle{display:inline-flex;}
    .header-inner{gap:14px;justify-content:space-between;}
    .hero{min-height:300px;padding:48px 0 36px;}
    .rel-grid{grid-template-columns:1fr;}
    .split{grid-template-columns:1fr;}
    .split-media{order:-1;}
    .anchor-bar{top:calc(var(--header-h) + var(--catbar-h));}
  }

  @media (max-width:640px){
    body{font-size:16px;}
    .container{padding:0 18px;}
    .section{padding:56px 0;}
    .section.tight{padding:48px 0;}
    .hero{padding:40px 0 32px;min-height:0;}
    .hero h1{margin:12px 0 14px;}
    .hero-actions{gap:10px;}
    .btn-lg{min-height:46px;padding:0 20px;font-size:15px;}
    .rule-row{grid-template-columns:56px minmax(0,1fr);gap:16px;padding:22px 0;}
    .rule-idx{font-size:16px;}
    .timeline{grid-template-columns:1fr;}
    .step{border-right:0;border-bottom:1px solid var(--line);padding:22px 0;}
    .step:last-child{border-bottom:0;}
    .sec-title{padding-left:14px;}
    .sec-desc{padding-left:15px;}
    .faq-q{font-size:15.5px;min-height:58px;}
    .cta-panel{padding:34px 22px;border-radius:16px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{flex:1 1 auto;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{justify-content:flex-start;}
    .anchor-inner{gap:16px;}
    .scroll-anchor{scroll-margin-top:160px;}
    .badge{font-size:11.5px;padding:5px 11px;}
  }

/* roulang page: category2 */
:root{
  --bg:#0A0B0D;
  --panel:#12141A;
  --elev:#1A1D24;
  --primary:#00E0B8;
  --lime:#D8FF4F;
  --text:#F2F0EA;
  --muted:#A7ADB8;
  --faint:#6B7280;
  --line:rgba(242,240,234,0.08);
  --line-strong:rgba(242,240,234,0.18);
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:"Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(10,11,13,.88);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.site-header.scrolled{background:rgba(10,11,13,.97);box-shadow:0 14px 34px rgba(0,0,0,.5)}
.header-inner{display:flex;align-items:center;gap:22px;height:72px}
.logo{display:flex;flex-direction:column;line-height:1.05;flex:0 0 auto}
.logo-mark{font-size:20px;font-weight:900;letter-spacing:.02em;color:var(--text)}
.logo-sub{font-size:11px;letter-spacing:.12em;color:var(--primary);margin-top:4px}
.nav-search{
  position:relative;
  display:flex;align-items:center;
  flex:1 1 44%;max-width:520px;height:44px;
  background:var(--elev);
  border:1px solid var(--line);
  border-radius:10px;
  padding-left:40px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,224,184,.14);background:#1d2029}
.search-icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--faint);pointer-events:none}
.nav-search input{
  flex:1 1 auto;min-width:0;
  background:transparent;border:0;outline:none;
  color:var(--text);font-size:14px;padding:0 8px 0 0;
}
.nav-search input::placeholder{color:var(--faint)}
.nav-search input::-webkit-search-cancel-button{-webkit-appearance:none}
.search-btn{
  flex:0 0 auto;width:30px;height:30px;margin-right:6px;
  border-radius:8px;background:var(--primary);color:#06120F;
  display:flex;align-items:center;justify-content:center;
  transition:filter .18s var(--ease),transform .18s var(--ease);
}
.search-btn:hover{filter:brightness(1.14)}
.search-btn:active{transform:translateY(1px)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);align-items:center;justify-content:center;
  color:var(--text);transition:border-color .18s var(--ease),color .18s var(--ease);
}
.menu-toggle:hover{border-color:var(--primary);color:var(--primary)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-weight:700;font-size:15px;letter-spacing:.01em;
  transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--primary);color:#06120F}
.btn-primary:hover{background:#2ff0cb;transform:translateY(-2px);box-shadow:0 0 0 2px rgba(0,224,184,.3)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-ghost{border:1px solid var(--line-strong);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}

.cat-bar{border-top:1px solid var(--line)}
.cat-bar-inner{display:flex;align-items:stretch;gap:30px;height:52px;overflow-x:auto;scrollbar-width:none}
.cat-bar-inner::-webkit-scrollbar{display:none}
.cat-link{
  display:inline-flex;align-items:center;position:relative;
  font-size:14px;color:var(--muted);white-space:nowrap;
  transition:color .18s var(--ease);
}
.cat-link:hover{color:var(--text)}
.cat-link.active{color:var(--primary);font-weight:700}
.cat-link.active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--primary)}

.mobile-drawer{
  display:none;
  background:var(--panel);
  border-top:1px solid var(--line);
  padding:14px 0 20px;
}
.mobile-drawer.open{display:block}
.drawer-search{
  display:flex;align-items:center;gap:10px;height:44px;
  background:var(--elev);border:1px solid var(--line);border-radius:10px;
  padding:0 12px;margin-bottom:12px;
}
.drawer-search input{flex:1;min-width:0;background:transparent;border:0;outline:none;color:var(--text);font-size:14px}
.drawer-search input::placeholder{color:var(--faint)}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 2px;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--muted);
  transition:color .18s var(--ease);
}
.drawer-link:last-child{border-bottom:0}
.drawer-link:hover{color:var(--text)}
.drawer-link.active{color:var(--primary);font-weight:700}

/* ============ 内页首屏 ============ */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(90deg,rgba(10,11,13,.95) 0%,rgba(10,11,13,.78) 46%,rgba(10,11,13,.42) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(242,240,234,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(242,240,234,.045) 1px,transparent 1px);
  background-size:52px 52px;
}
.page-hero .container{position:relative;z-index:2;padding-top:40px;padding-bottom:52px;min-height:320px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--faint);margin-bottom:24px;flex-wrap:wrap}
.breadcrumb a{transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .current{color:var(--muted)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.16em;color:var(--primary);margin-bottom:16px}
.eyebrow i{display:block;width:22px;height:1px;background:var(--primary)}
.page-hero h1{
  font-size:clamp(30px,4.4vw,52px);
  font-weight:900;line-height:1.14;letter-spacing:-.02em;
  max-width:16em;
}
.page-hero h1 .hl{color:var(--primary)}
.hero-sub{margin-top:16px;font-size:17px;color:var(--muted);max-width:620px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 32px;margin-top:28px}
.hero-meta .item{display:flex;align-items:baseline;gap:9px}
.hero-meta .mono{font-size:19px;font-weight:700;color:var(--primary);line-height:1}
.hero-meta .lbl{font-size:13px;color:var(--faint);letter-spacing:.04em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-head{max-width:660px;margin-bottom:44px;border-top:1px solid var(--line);padding-top:24px}
.sec-index{display:inline-block;font-size:12px;letter-spacing:.2em;color:var(--primary);margin-bottom:14px}
.section-head h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;line-height:1.22;letter-spacing:-.01em}
.section-sub{margin-top:14px;color:var(--muted);font-size:16px}

/* ============ 两栏图文 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split + .split{margin-top:88px}
.split.reverse .split-text{order:2}
.split.reverse .split-media{order:1}
.split-text .tag{
  display:inline-block;font-size:12px;letter-spacing:.14em;
  color:var(--primary);border:1px solid rgba(0,224,184,.35);
  background:rgba(0,224,184,.07);
  border-radius:999px;padding:4px 12px;margin-bottom:18px;
}
.split-text h2{font-size:clamp(24px,2.8vw,32px);font-weight:800;line-height:1.3;margin-bottom:16px;letter-spacing:-.01em}
.split-text p{color:var(--muted);font-size:16px;line-height:1.9;margin-bottom:16px}
.split-media{
  position:relative;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);background:var(--elev);
  box-shadow:var(--shadow);
}
.split-media img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s var(--ease)}
.split-media:hover img{transform:scale(1.035)}
.split-media figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;font-size:12.5px;color:var(--muted);
  background:linear-gradient(180deg,rgba(10,11,13,0),rgba(10,11,13,.88));
}
.check-list{margin-top:6px}
.check-list li{
  display:flex;gap:12px;padding:13px 0;
  border-bottom:1px solid var(--line);
  font-size:15px;color:var(--text);line-height:1.75;
}
.check-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;margin-top:12px;
  background:var(--primary);border-radius:1px;
}
.check-list li span{color:var(--muted)}

/* ============ 编号步骤 ============ */
.step-list{border-top:1px solid var(--line)}
.step-item{
  display:grid;grid-template-columns:92px 1fr 132px;gap:24px;align-items:start;
  padding:28px 0;border-bottom:1px solid var(--line);
  transition:background .18s var(--ease),padding-left .18s var(--ease);
}
.step-item:hover{background:rgba(255,255,255,.022);padding-left:10px}
.step-num{font-size:34px;font-weight:800;color:var(--primary);line-height:1;letter-spacing:.02em}
.step-body h3{font-size:20px;font-weight:700;margin-bottom:8px;line-height:1.5}
.step-body p{color:var(--muted);font-size:15px;line-height:1.85}
.step-tag{
  justify-self:end;font-size:12px;letter-spacing:.1em;color:var(--muted);
  border:1px solid var(--line-strong);border-radius:999px;
  padding:4px 12px;white-space:nowrap;line-height:1.6;
}

/* ============ 设备卡片 ============ */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.device-card{
  background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px 24px 28px;
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.device-card:hover{transform:translateY(-4px);border-color:rgba(0,224,184,.45);box-shadow:var(--shadow);background:#14171E}
.device-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.pill{
  font-size:12px;letter-spacing:.06em;padding:4px 12px;border-radius:999px;
  border:1px solid rgba(0,224,184,.4);color:var(--primary);background:rgba(0,224,184,.08);
  white-space:nowrap;
}
.pill-lime{border-color:rgba(216,255,79,.45);color:var(--lime);background:rgba(216,255,79,.1)}
.dim{font-size:13px;color:var(--faint);white-space:nowrap}
.device-card h3{font-size:19px;font-weight:700;margin-bottom:10px;line-height:1.5}
.device-card p{color:var(--muted);font-size:14.5px;line-height:1.85}

/* ============ 排查提示面板 ============ */
.notice-panel{
  background:linear-gradient(180deg,rgba(0,224,184,.07),rgba(0,224,184,.015));
  border:1px solid rgba(0,224,184,.24);
  border-radius:18px;
  padding:44px 40px;
}
.notice-head{display:flex;align-items:center;gap:16px;margin-bottom:32px;flex-wrap:wrap}
.notice-head .badge{
  font-size:12px;letter-spacing:.18em;color:var(--primary);
  border:1px solid rgba(0,224,184,.4);border-radius:999px;padding:4px 12px;
}
.notice-head h2{font-size:clamp(22px,2.6vw,28px);font-weight:800;line-height:1.35}
.notice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.notice-grid h3{font-size:16px;font-weight:700;margin-bottom:10px;color:var(--text)}
.notice-grid h3::before{content:"";display:block;width:22px;height:1px;background:var(--primary);margin-bottom:12px}
.notice-grid p{color:var(--muted);font-size:14.5px;line-height:1.85}

/* ============ 底部 CTA ============ */
.cta-strip{
  background:var(--panel);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:64px 0;
  position:relative;
  overflow:hidden;
}
.cta-strip::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(242,240,234,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(242,240,234,.035) 1px,transparent 1px);
  background-size:44px 44px;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(24px,3vw,34px);font-weight:900;line-height:1.3;letter-spacing:-.01em}
.cta-inner p{color:var(--muted);margin-top:10px;font-size:15px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:#07080A;border-top:1px solid var(--line);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo-mark{font-size:18px}
.brand-full{margin-top:10px;font-size:13px;letter-spacing:.1em;color:var(--primary)}
.footer-brand p{margin-top:16px;color:var(--faint);font-size:14px;line-height:1.9;max-width:330px}
.footer-title{font-size:13px;letter-spacing:.16em;color:var(--muted);margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{color:var(--faint);font-size:14px;transition:color .18s var(--ease)}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);
  padding:22px 0 28px;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:var(--faint);
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .split{gap:36px}
  .split + .split{margin-top:64px}
  .device-grid{gap:18px}
  .notice-panel{padding:36px 30px}
  .notice-grid{gap:24px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:959px){
  .header-inner{height:60px;gap:14px}
  .nav-search{flex:1 1 auto;max-width:none;height:40px}
  .header-actions .btn-sm{display:none}
  .menu-toggle{display:flex}
  .cat-bar{display:none}
  .section{padding:60px 0}
  .page-hero .container{min-height:0;padding-top:34px;padding-bottom:40px}
  .site-header{position:sticky}
}
@media (max-width:899px){
  .split{grid-template-columns:1fr;gap:28px}
  .split.reverse .split-text{order:0}
  .split.reverse .split-media{order:0}
  .device-grid{grid-template-columns:1fr}
  .notice-grid{grid-template-columns:1fr;gap:22px}
  .notice-panel{padding:30px 22px}
  .step-item{grid-template-columns:56px 1fr;gap:16px}
  .step-num{font-size:26px}
  .step-tag{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:52px 0}
  .logo-mark{font-size:17px}
  .logo-sub{font-size:10px}
  .page-hero h1{font-size:clamp(26px,7.6vw,34px)}
  .hero-sub{font-size:15.5px}
  .hero-meta{gap:10px 20px;margin-top:22px}
  .hero-meta .mono{font-size:17px}
  .hero-actions{gap:10px;margin-top:24px}
  .hero-actions .btn{flex:1 1 auto;padding:0 16px}
  .step-body h3{font-size:18px}
  .split-text h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:40px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --bg:#0A0B0D;
  --panel:#12141A;
  --elev:#1A1D24;
  --primary:#00E0B8;
  --accent:#D8FF4F;
  --text:#F2F0EA;
  --muted:#A7ADB8;
  --dim:#6B7280;
  --line:rgba(242,240,234,.08);
  --r-card:14px;
  --r-btn:10px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:"DIN Alternate","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"HarmonyOS Sans","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
input{font:inherit}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(0,224,184,.26);color:#fff}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:3px;
  border-radius:6px;
}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);letter-spacing:.04em}

/* ============ 头部 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,11,13,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease),background .2s var(--ease);
}
.site-header.scrolled{background:rgba(10,11,13,.97);box-shadow:0 12px 32px rgba(0,0,0,.55)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;position:relative}
.logo{display:flex;flex-direction:column;line-height:1.12;flex:0 0 auto}
.logo-mark{font-size:20px;font-weight:900;letter-spacing:-.01em}
.logo-sub{font-size:11px;letter-spacing:.12em;color:var(--primary);margin-top:4px;font-weight:600}
.nav-search{
  flex:1 1 auto;max-width:46%;min-width:220px;
  display:flex;align-items:center;gap:10px;
  height:44px;padding:0 6px 0 14px;
  background:var(--elev);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  transition:border-color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);background:#1D2028;box-shadow:0 0 0 3px rgba(0,224,184,.12)}
.search-icon{color:var(--dim);flex:0 0 auto}
.nav-search input{flex:1 1 auto;min-width:0;background:none;border:0;color:var(--text);font-size:14px;padding:0}
.nav-search input:focus{outline:none}
.nav-search input::placeholder{color:var(--dim)}
.search-btn{
  width:32px;height:32px;flex:0 0 auto;display:grid;place-items:center;
  background:var(--primary);color:#07100E;border:0;border-radius:8px;cursor:pointer;
  transition:filter .18s var(--ease),transform .18s var(--ease);
}
.search-btn:hover{filter:brightness(1.12)}
.search-btn:active{transform:translateY(1px)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.menu-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  background:var(--elev);border:1px solid var(--line);border-radius:var(--r-btn);cursor:pointer;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.menu-toggle:hover{border-color:var(--primary);background:#1D2028}

.cat-bar{border-top:1px solid var(--line);background:rgba(18,20,26,.55)}
.cat-bar-inner{display:flex;align-items:center;gap:6px;height:50px;overflow-x:auto;scrollbar-width:none}
.cat-bar-inner::-webkit-scrollbar{display:none}
.cat-link{
  position:relative;display:inline-flex;align-items:center;height:50px;
  padding:0 10px;font-size:14px;color:var(--muted);white-space:nowrap;
  border-bottom:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.cat-link:hover{color:var(--text)}
.cat-link.active{color:var(--primary);font-weight:700;border-bottom-color:var(--primary)}

.mobile-drawer{display:none}
.mobile-drawer.open{
  display:block;position:absolute;left:0;right:0;top:100%;
  background:var(--panel);border-bottom:1px solid var(--line);
  box-shadow:var(--shadow);padding:14px 0 22px;
}
.drawer-search{display:flex;align-items:center;gap:10px;height:44px;padding:0 12px;background:var(--elev);border:1px solid var(--line);border-radius:var(--r-btn);margin-bottom:14px}
.drawer-search input{flex:1;background:none;border:0;color:var(--text);font-size:14px;min-width:0}
.drawer-search input::placeholder{color:var(--dim)}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;font-size:15px;color:var(--muted);
  border-bottom:1px solid var(--line);
}
.drawer-link:last-child{border-bottom:0}
.drawer-link.active{color:var(--primary);font-weight:700}

/* ============ 按钮 / 徽标 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease),color .18s var(--ease),filter .18s var(--ease);
}
.btn-primary{background:var(--primary);color:#07100E}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 2px rgba(0,224,184,.35)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:rgba(242,240,234,.22);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:38px;padding:0 18px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:700;font-size:14.5px}
.link-arrow span.ar{transition:transform .18s var(--ease)}
.link-arrow:hover span.ar{transform:translateX(3px)}

.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:12px;letter-spacing:.04em;
  border:1px solid rgba(0,224,184,.4);color:var(--primary);background:rgba(0,224,184,.06);
}
.badge-accent{background:var(--accent);border-color:var(--accent);color:#0A0B0D;font-weight:700}
.badge-muted{border-color:rgba(242,240,234,.18);color:var(--muted);background:transparent}

/* ============ Hero ============ */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.55;
}
.page-hero .hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,11,13,.96) 0%,rgba(10,11,13,.88) 48%,rgba(10,11,13,.5) 100%);
}
.page-hero .hero-grid{
  position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(242,240,234,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(242,240,234,.055) 1px,transparent 1px);
  background-size:56px 56px;
}
.hero-inner{position:relative;z-index:2;padding:76px 0 68px;max-width:780px}
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--primary);
  margin-bottom:20px;
}
.kicker::before{content:"";width:26px;height:1px;background:var(--primary);display:block}
.page-hero h1{
  font-size:clamp(32px,5vw,54px);
  line-height:1.1;font-weight:900;letter-spacing:-.02em;
  max-width:16em;
}
.page-hero h1 em{font-style:normal;color:var(--primary)}
.hero-lead{margin-top:20px;font-size:17px;color:var(--muted);max-width:600px;line-height:1.85}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.hero-stats{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:34px;
  font-size:12px;color:var(--dim);letter-spacing:.06em;
}
.hero-stats .num{font-family:var(--mono);font-size:20px;color:var(--text);letter-spacing:.04em;margin-right:6px}
.hero-stats i{width:1px;height:18px;background:rgba(242,240,234,.16);display:inline-block}

.breadcrumb{padding:20px 0 0;font-size:13px;color:var(--dim)}
.breadcrumb a{color:var(--dim);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{margin:0 8px;color:rgba(242,240,234,.22)}
.breadcrumb .cur{color:var(--muted)}

/* ============ 板块通用 ============ */
.section{padding:92px 0}
.section.tight{padding:56px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;flex-wrap:wrap}
.sec-title-wrap{border-left:1px solid var(--primary);padding-left:18px}
.sec-num{display:block;font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--primary);margin-bottom:10px}
.sec-title{font-size:clamp(25px,3.1vw,36px);font-weight:800;letter-spacing:-.01em;line-height:1.22}
.sec-desc{color:var(--muted);font-size:15px;max-width:460px;line-height:1.85}
.hr-line{height:1px;background:var(--line);border:0;margin:0}

/* ============ 设备卡片 ============ */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.device-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.device-card:hover{transform:translateY(-3px);border-color:rgba(0,224,184,.45);box-shadow:var(--shadow)}
.device-thumb{position:relative;aspect-ratio:16/10;background:var(--elev);overflow:hidden;border-bottom:1px solid var(--line)}
.device-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.device-card:hover .device-thumb img{transform:scale(1.04)}
.device-body{padding:22px 22px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.device-name{font-size:19px;font-weight:700;letter-spacing:-.01em}
.device-spec{font-family:var(--mono);font-size:13px;color:var(--accent);letter-spacing:.04em}
.device-body p{font-size:14.5px;color:var(--muted);line-height:1.8}
.device-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:14px}

/* ============ 双列对照 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.check-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-card);padding:30px 30px 12px}
.check-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.check-head h3{font-size:20px;font-weight:800;letter-spacing:-.01em}
.check-list{list-style:none;margin:0;padding:0}
.check-list li{
  display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--muted);line-height:1.75;
}
.check-list li:last-child{border-bottom:0}
.check-list li::before{
  content:"";flex:0 0 8px;height:8px;margin-top:10px;border-radius:2px;background:var(--primary);
}
.check-list.warn li::before{background:rgba(242,240,234,.28);border-radius:50%}

/* ============ 核对步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{position:relative;padding-top:24px;border-top:1px solid var(--line)}
.step::before{content:"";position:absolute;top:-1px;left:0;width:40px;height:1px;background:var(--primary)}
.step-num{font-family:var(--mono);font-size:13px;letter-spacing:.1em;color:var(--primary)}
.step h3{font-size:17px;font-weight:700;margin:12px 0 8px;letter-spacing:-.01em}
.step p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* ============ 提示面板 ============ */
.notice{
  display:grid;grid-template-columns:auto 1fr;gap:28px;align-items:start;
  padding:38px;border-radius:16px;
  background:linear-gradient(135deg,rgba(0,224,184,.075),rgba(216,255,79,.035));
  border:1px solid rgba(0,224,184,.24);
}
.notice-num{font-family:var(--mono);font-size:44px;line-height:1;color:var(--primary);letter-spacing:.02em}
.notice h3{font-size:21px;font-weight:800;margin-bottom:12px;letter-spacing:-.01em}
.notice p{font-size:15.5px;color:var(--muted);line-height:1.9}
.notice p + p{margin-top:10px}
.notice strong{color:var(--text);font-weight:700}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line);max-width:900px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:20px;min-height:64px;padding:20px 0;font-size:16.5px;font-weight:600;letter-spacing:-.005em;
  transition:color .18s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--primary)}
.faq summary::after{content:"+";font-size:22px;line-height:1;color:var(--primary);font-weight:400;flex:0 0 auto}
.faq details[open] summary::after{content:"−"}
.faq details[open] summary{color:var(--primary)}
.faq .ans{padding:0 0 26px;font-size:15.5px;color:var(--muted);line-height:1.9;max-width:820px}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  padding:52px 48px;border-radius:18px;
  background:var(--panel);border:1px solid var(--line);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(242,240,234,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(242,240,234,.04) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(circle at 20% 30%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 20% 30%,#000 0%,transparent 72%);
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(24px,3vw,34px);font-weight:900;letter-spacing:-.02em;line-height:1.25;max-width:20em}
.cta-band p{margin-top:12px;color:var(--muted);font-size:15.5px;max-width:38em}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{border-top:1px solid var(--line);background:#08090B;padding:76px 0 28px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo-mark{font-size:19px;font-weight:900}
.brand-full{font-size:13px;color:var(--primary);letter-spacing:.06em;margin:8px 0 14px;font-weight:600}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.85;max-width:340px}
.footer-title{font-size:12.5px;letter-spacing:.14em;color:var(--dim);margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{color:var(--muted);font-size:14.5px;transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-links a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);margin-top:52px;padding-top:24px;
  color:var(--dim);font-size:13px;
}

/* ============ 动效 ============ */
.fade-up{opacity:0;transform:translateY(12px);animation:fadeUp .6s var(--ease) forwards}
.fade-up.d1{animation-delay:.06s}
.fade-up.d2{animation-delay:.12s}
.fade-up.d3{animation-delay:.18s}
@keyframes fadeUp{to{opacity:1;transform:translateY(0)}}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .fade-up{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .header-inner{gap:20px}
  .nav-search{max-width:44%}
  .device-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .hero-inner{padding:64px 0 56px}
  .section{padding:72px 0}
}
@media (max-width:960px){
  .nav-search{display:none}
  .cat-bar{display:none}
  .menu-toggle{display:flex}
  .header-inner{height:60px}
  .logo-mark{font-size:18px}
  .logo-sub{font-size:11px}
  .page-hero h1{font-size:clamp(28px,7vw,40px)}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .device-grid{grid-template-columns:1fr}
  .compare{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:26px}
  .notice{grid-template-columns:1fr;padding:28px;gap:16px}
  .notice-num{font-size:34px}
  .cta-band{padding:34px 26px;gap:24px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .section{padding:60px 0}
  .sec-head{margin-bottom:32px}
  .check-card{padding:24px 22px 8px}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{margin-top:64px;padding-top:56px}
  .hero-stats{gap:14px}
}
@media (max-width:480px){
  .header-actions .btn-sm{display:none}
  .page-hero h1{font-size:27px}
  .hero-lead{font-size:15.5px}
  .sec-title{font-size:23px}
  .faq summary{font-size:15.5px;padding:18px 0}
  .footer-bottom{font-size:12px}
}

/* roulang page: category4 */
:root{
  --bg:#0A0B0D;
  --panel:#12141A;
  --raise:#1A1D24;
  --brand:#00E0B8;
  --lime:#D8FF4F;
  --text:#F2F0EA;
  --text-2:#A7ADB8;
  --text-3:#6B7280;
  --line:rgba(242,240,234,.08);
  --line-strong:rgba(242,240,234,.16);
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"HarmonyOS Sans","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"DIN Alternate","Roboto Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
input{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.04em;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;line-height:1;
  border:1px solid transparent;
  transition:transform .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#04120F;}
.btn-primary:hover{background:#28f0c9;box-shadow:0 0 0 2px rgba(0,224,184,.28);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--brand);color:#FFFFFF;transform:translateY(-2px);background:rgba(0,224,184,.06);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);
  font-size:14px;font-weight:700;min-height:32px;
}
.link-arrow span.arrow{transition:transform .18s var(--ease);}
.link-arrow:hover span.arrow{transform:translateX(3px);}

/* ---------- 徽标 / 胶囊 ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;font-weight:700;
  letter-spacing:.08em;line-height:1.6;
}
.pill-line{border:1px solid rgba(0,224,184,.42);color:var(--brand);background:rgba(0,224,184,.06);}
.pill-lime{background:var(--lime);color:#14180A;border:1px solid var(--lime);}
.pill-mute{border:1px solid var(--line-strong);color:var(--text-2);background:transparent;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(10,11,13,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.site-header.is-scrolled{background:rgba(8,9,11,.96);box-shadow:0 12px 28px rgba(0,0,0,.5);}
.header-inner{
  display:flex;align-items:center;gap:24px;height:72px;
}
.logo{display:flex;flex-direction:column;justify-content:center;flex:0 0 auto;line-height:1.15;}
.logo-mark{font-size:19px;font-weight:900;letter-spacing:.02em;color:var(--text);}
.logo-sub{
  font-size:11px;font-weight:600;color:var(--text-2);
  letter-spacing:.12em;margin-top:3px;
}
.logo:hover .logo-mark{color:var(--brand);}
.logo-mark,.logo-sub{transition:color .18s var(--ease);}

.nav-search{
  position:relative;flex:1 1 auto;max-width:520px;
  display:flex;align-items:center;
  background:var(--raise);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  height:44px;padding-left:40px;padding-right:6px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(0,224,184,.12);}
.nav-search .search-icon{position:absolute;left:14px;color:var(--text-3);pointer-events:none;}
.nav-search input[type="search"]{
  flex:1 1 auto;height:100%;background:transparent;border:0;outline:none;
  color:var(--text);font-size:14px;
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search input::-webkit-search-cancel-button{-webkit-appearance:none;}
.search-btn{
  flex:0 0 auto;width:32px;height:32px;border-radius:8px;border:0;
  background:var(--brand);color:#04120F;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background-color .18s var(--ease),transform .18s var(--ease);
}
.search-btn:hover{background:#28f0c9;transform:translateY(-1px);}
.search-btn:active{transform:translateY(1px);}

.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:auto;}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  background:var(--raise);border:1px solid var(--line);color:var(--text);
  align-items:center;justify-content:center;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand);}

.cat-bar{border-top:1px solid var(--line);}
.cat-bar-inner{display:flex;align-items:center;gap:28px;height:50px;overflow-x:auto;scrollbar-width:none;}
.cat-bar-inner::-webkit-scrollbar{display:none;}
.cat-link{
  position:relative;flex:0 0 auto;font-size:14.5px;font-weight:600;
  color:var(--text-2);padding:6px 0;transition:color .18s var(--ease);
  white-space:nowrap;
}
.cat-link:hover{color:var(--text);}
.cat-link.active{color:var(--brand);}
.cat-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:var(--brand);border-radius:2px;
}

.mobile-drawer{
  display:none;border-top:1px solid var(--line);
  background:#0D0F13;padding:14px 0 20px;
}
.mobile-drawer.open{display:block;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;font-size:15px;font-weight:600;color:var(--text-2);
  border-bottom:1px solid var(--line);
}
.drawer-link:last-child{border-bottom:0;}
.drawer-link.active,.drawer-link:hover{color:var(--brand);}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(90deg,rgba(10,11,13,.94) 0%,rgba(10,11,13,.72) 46%,rgba(10,11,13,.42) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(242,240,234,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(242,240,234,.5) 1px,transparent 1px);
  background-size:64px 64px;opacity:.04;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1fr) 340px;
  gap:48px;align-items:center;
  padding:64px 0 60px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.16em;color:var(--brand);font-weight:700;
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--brand);}
.hero-title{
  font-size:clamp(34px,4.6vw,58px);
  font-weight:900;line-height:1.12;letter-spacing:-.02em;
  margin:18px 0 0;max-width:16em;
}
.hero-sub{
  margin-top:18px;color:var(--text-2);font-size:16.5px;max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:30px;padding-top:20px;border-top:1px solid var(--line);
  color:var(--text-2);font-size:13px;
}
.hero-meta b{color:var(--text);font-family:var(--font-num);font-size:15px;letter-spacing:.04em;}
.hero-meta .sep{width:1px;height:12px;background:var(--line-strong);}

.hero-card{
  background:rgba(18,20,26,.88);
  border:1px solid rgba(0,224,184,.18);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:var(--shadow);
  backdrop-filter:blur(6px);
}
.hero-card .hc-top{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.hero-card .hc-label{font-size:12px;letter-spacing:.14em;color:var(--text-3);font-weight:700;}
.hero-card .hc-step{
  font-family:var(--font-num);font-size:44px;font-weight:700;color:var(--text);
  line-height:1;letter-spacing:.02em;margin-top:16px;
}
.hero-card .hc-step small{font-size:14px;color:var(--text-3);margin-left:8px;letter-spacing:.08em;}
.hero-card .hc-desc{color:var(--text-2);font-size:13.5px;margin-top:8px;}
.hc-bar{height:6px;border-radius:999px;background:rgba(242,240,234,.1);margin-top:18px;overflow:hidden;}
.hc-bar > i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--brand),#4ef0d4);border-radius:999px;transition:width .9s var(--ease);}
.hc-foot{display:flex;align-items:center;justify-content:space-between;margin-top:12px;font-size:12.5px;color:var(--text-3);}
.hc-foot b{font-family:var(--font-num);color:var(--lime);font-size:16px;letter-spacing:.04em;}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;
  padding-bottom:22px;border-bottom:1px solid var(--line);
  margin-bottom:44px;
}
.sec-no{
  font-family:var(--font-num);font-size:12px;letter-spacing:.24em;
  color:var(--brand);font-weight:700;display:block;margin-bottom:14px;
}
.sec-title{
  position:relative;padding-left:18px;
  font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.25;letter-spacing:-.01em;
}
.sec-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:var(--brand);
}
.sec-desc{color:var(--text-2);font-size:15px;max-width:46em;margin-top:12px;}

/* ---------- 奖励网格 ---------- */
.reward-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.reward-card{
  position:relative;overflow:hidden;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  transition:transform .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease);
}
.reward-card:hover{transform:translateY(-2px);border-color:rgba(0,224,184,.55);background:#161922;box-shadow:var(--shadow);}
.reward-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0E1015;border-bottom:1px solid var(--line);}
.reward-thumb img{width:100%;height:100%;object-fit:cover;opacity:.82;transition:opacity .2s var(--ease),transform .4s var(--ease);}
.reward-card:hover .reward-thumb img{opacity:1;transform:scale(1.03);}
.reward-thumb .pill{position:absolute;top:10px;right:10px;}
.reward-body{padding:18px 18px 20px;}
.reward-value{
  display:flex;align-items:baseline;gap:6px;
  font-family:var(--font-num);font-size:34px;font-weight:700;letter-spacing:.02em;line-height:1;
  color:var(--text);
}
.reward-value span{font-size:13px;color:var(--text-3);letter-spacing:.1em;font-weight:600;}
.reward-name{font-size:16px;font-weight:700;margin-top:12px;}
.reward-note{font-size:13.5px;color:var(--text-2);margin-top:6px;line-height:1.75;}
.reward-line{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3);}
.reward-line .mono{color:var(--text-2);}

/* ---------- 竖向进度轨道 ---------- */
.track-panel{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:34px 34px 12px;
}
.track-top{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;flex-wrap:wrap;padding-bottom:24px;border-bottom:1px solid var(--line);}
.track-top h3{font-size:22px;font-weight:800;}
.track-top p{color:var(--text-2);font-size:14.5px;margin-top:8px;max-width:40em;}
.track-total{font-family:var(--font-num);font-size:38px;font-weight:700;line-height:1;color:var(--brand);letter-spacing:.02em;}
.track-total small{display:block;font-family:var(--font-cn);font-size:12px;letter-spacing:.14em;color:var(--text-3);margin-top:8px;font-weight:700;}

.track{position:relative;margin-top:10px;}
.track-item{
  position:relative;display:grid;grid-template-columns:56px minmax(0,1fr);
  gap:20px;padding:26px 0;
  border-bottom:1px solid var(--line);
}
.track-item:last-child{border-bottom:0;}
.track-node{
  position:relative;width:34px;height:34px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:13px;font-weight:700;
  border:1px solid var(--line-strong);color:var(--text-3);background:#0E1015;
  margin-top:2px;
}
.track-item::before{
  content:"";position:absolute;left:17px;top:44px;bottom:-14px;width:1px;background:var(--line);
}
.track-item:last-child::before{display:none;}
.track-item.done .track-node{background:var(--brand);border-color:var(--brand);color:#04120F;}
.track-item.done::before{background:rgba(0,224,184,.4);}
.track-item.current .track-node{border-color:var(--lime);color:var(--lime);box-shadow:0 0 0 4px rgba(216,255,79,.1);animation:pulseNode 1.6s ease-in-out infinite;}
@keyframes pulseNode{
  0%,100%{box-shadow:0 0 0 4px rgba(216,255,79,.08);}
  50%{box-shadow:0 0 0 9px rgba(216,255,79,.02);}
}
.track-head{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.track-head h4{font-size:17.5px;font-weight:700;}
.track-head .status{font-size:12px;letter-spacing:.1em;color:var(--text-3);font-weight:700;}
.track-item.done .track-head .status{color:var(--brand);}
.track-item.current .track-head .status{color:var(--lime);}
.track-desc{color:var(--text-2);font-size:14.5px;margin-top:8px;max-width:52em;}
.track-progress{display:flex;align-items:center;gap:14px;margin-top:14px;}
.bar{flex:1 1 auto;height:6px;border-radius:999px;background:rgba(242,240,234,.09);overflow:hidden;max-width:420px;}
.bar > i{display:block;height:100%;width:0;border-radius:999px;background:var(--brand);transition:width 1s var(--ease);}
.track-item.current .bar > i{background:linear-gradient(90deg,var(--lime),#b7e02e);}
.bar-num{font-family:var(--font-num);font-size:14px;font-weight:700;color:var(--text-2);letter-spacing:.04em;min-width:52px;text-align:right;}

/* ---------- 任务清单 ---------- */
.task-list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--panel);}
.task-row{
  display:grid;grid-template-columns:56px minmax(0,1fr) 132px;
  gap:18px;align-items:center;
  padding:20px 24px;border-bottom:1px solid var(--line);
  transition:background-color .18s var(--ease);
}
.task-row:last-child{border-bottom:0;}
.task-row:hover{background:#161922;}
.task-row .idx{font-family:var(--font-num);font-size:15px;color:var(--text-3);letter-spacing:.12em;}
.task-row h4{font-size:16px;font-weight:700;}
.task-row p{font-size:13.5px;color:var(--text-2);margin-top:4px;}
.task-state{justify-self:end;}
.task-state .pill{white-space:nowrap;}

/* ---------- 说明小卡 ---------- */
.note-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.note-card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;
  transition:transform .18s var(--ease),border-color .18s var(--ease);
}
.note-card:hover{transform:translateY(-2px);border-color:rgba(0,224,184,.5);}
.note-card .num{font-family:var(--font-num);font-size:13px;letter-spacing:.2em;color:var(--brand);font-weight:700;}
.note-card h4{font-size:17px;font-weight:800;margin-top:14px;}
.note-card p{font-size:14.5px;color:var(--text-2);margin-top:10px;}
.note-card .hair{height:1px;background:var(--line);margin:18px 0 0;}

/* ---------- FAQ ---------- */
.faq-wrap{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:18px 4px;
  background:transparent;border:0;color:var(--text);
  font-size:16.5px;font-weight:700;text-align:left;
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-q .sign{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  border:1px solid var(--line-strong);color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;line-height:1;
  transition:transform .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.faq-item.open .faq-q .sign{border-color:var(--brand);color:var(--brand);transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
.faq-a p{color:var(--text-2);font-size:16px;line-height:1.9;padding:0 4px 24px;max-width:56em;}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#12141A 0%,#0F1218 100%);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(242,240,234,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(242,240,234,.6) 1px,transparent 1px);
  background-size:48px 48px;
}
.cta-inner{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  padding:64px 0;
}
.cta-inner h2{font-size:clamp(24px,3.2vw,36px);font-weight:900;line-height:1.2;letter-spacing:-.01em;}
.cta-inner p{color:var(--text-2);font-size:15.5px;margin-top:12px;max-width:38em;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);padding:20px 0 0;
}
.crumb a{color:var(--text-3);transition:color .18s var(--ease);}
.crumb a:hover{color:var(--brand);}
.crumb .slash{color:rgba(242,240,234,.22);}
.crumb .cur{color:var(--text-2);}

/* ---------- 页脚 ---------- */
.site-footer{background:#08090B;border-top:1px solid var(--line);padding:72px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:48px;
}
.footer-brand .logo-mark{font-size:20px;font-weight:900;}
.brand-full{color:var(--brand);font-size:13px;letter-spacing:.12em;font-weight:700;margin-top:10px;}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:16px;max-width:30em;line-height:1.85;}
.footer-title{font-size:13px;letter-spacing:.16em;color:var(--text-3);font-weight:700;margin-bottom:18px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{color:var(--text-2);font-size:14.5px;transition:color .18s var(--ease);}
.footer-links a:hover{color:var(--brand);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 28px;border-top:1px solid var(--line);
  color:var(--text-3);font-size:13px;
}

/* ---------- 进入动画 ---------- */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:minmax(0,1fr);gap:32px;padding:52px 0 48px;}
  .hero-card{max-width:420px;}
  .reward-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .note-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .section{padding:76px 0;}
}
@media (max-width:960px){
  .nav-search{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-inner{height:64px;gap:16px;}
  .cat-bar{display:none;}
  .task-row{grid-template-columns:40px minmax(0,1fr);grid-template-areas:"idx main" "state state";gap:12px 14px;}
  .task-row .idx{grid-area:idx;}
  .task-row .t-main{grid-area:main;}
  .task-state{grid-area:state;justify-self:start;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  body{font-size:16px;}
  .hero-title{font-size:clamp(28px,7.4vw,38px);}
  .hero-sub{font-size:15.5px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:32px;}
  .reward-grid{grid-template-columns:minmax(0,1fr);}
  .note-grid{grid-template-columns:minmax(0,1fr);}
  .track-panel{padding:24px 20px 8px;}
  .track-item{grid-template-columns:40px minmax(0,1fr);gap:14px;}
  .track-item::before{left:15px;}
  .task-row{padding:18px 16px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:30px;padding-bottom:36px;}
  .cta-inner{padding:48px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .footer-bottom{font-size:12px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category5 */
:root{
  --bg:#0A0B0D;
  --panel:#12141A;
  --raise:#1A1D24;
  --primary:#00E0B8;
  --primary-hover:#22F0CB;
  --lime:#D8FF4F;
  --text:#F2F0EA;
  --muted:#A7ADB8;
  --faint:#6B7280;
  --line:rgba(242,240,234,0.08);
  --line-strong:rgba(242,240,234,0.16);
  --radius-card:14px;
  --radius-btn:10px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:"Roboto Mono","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sans:"HarmonyOS Sans","PingFang SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::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(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}
::selection{background:rgba(0,224,184,.28);color:var(--text)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);letter-spacing:.04em;font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,11,13,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.scrolled{background:rgba(10,11,13,.97);box-shadow:0 12px 32px rgba(0,0,0,.5)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;flex-direction:column;flex:0 0 auto;line-height:1.1}
.logo-mark{font-size:19px;font-weight:900;letter-spacing:.02em;color:var(--text)}
.logo-sub{font-size:11px;letter-spacing:.12em;color:var(--primary);margin-top:5px;font-weight:600}
.nav-search{
  position:relative;display:flex;align-items:center;
  flex:1 1 auto;max-width:520px;margin:0 auto;
  height:44px;padding:0 4px 0 42px;
  background:var(--raise);
  border:1px solid var(--line);
  border-radius:10px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.nav-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(0,224,184,.12);background:#1D2129}
.search-icon{position:absolute;left:14px;color:var(--faint);pointer-events:none}
.nav-search input[type="search"]{
  flex:1 1 auto;min-width:0;height:100%;background:transparent;border:0;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input[type="search"]::placeholder{color:var(--faint)}
.nav-search input[type="search"]::-webkit-search-cancel-button{-webkit-appearance:none;appearance:none}
.search-btn{
  flex:0 0 auto;width:36px;height:36px;border-radius:8px;
  background:var(--primary);color:#04120F;
  display:grid;place-items:center;
  transition:background .18s var(--ease),transform .18s var(--ease);
}
.search-btn:hover{background:var(--primary-hover);transform:translateY(-1px)}
.search-btn:active{transform:translateY(1px)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto}
.menu-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:var(--raise);
  place-items:center;color:var(--text);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.menu-toggle:hover{border-color:var(--primary);color:var(--primary)}

.cat-bar{border-top:1px solid var(--line)}
.cat-bar-inner{display:flex;align-items:center;gap:30px;height:48px;overflow-x:auto;scrollbar-width:none}
.cat-bar-inner::-webkit-scrollbar{display:none}
.cat-link{
  position:relative;flex:0 0 auto;font-size:14px;color:var(--muted);
  padding:4px 0;transition:color .18s var(--ease);
}
.cat-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:transparent;transition:background .18s var(--ease);
}
.cat-link:hover{color:var(--text)}
.cat-link.active{color:var(--primary);font-weight:700}
.cat-link.active::after{background:var(--primary)}

.mobile-drawer{display:none;background:var(--panel);border-top:1px solid var(--line);padding:8px 0 24px}
.mobile-drawer.open{display:block}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 2px;border-bottom:1px solid var(--line);
  font-size:15px;color:var(--muted);transition:color .18s var(--ease);
}
.drawer-link:last-child{border-bottom:0}
.drawer-link:hover{color:var(--text)}
.drawer-link.active{color:var(--primary);font-weight:700}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .18s var(--ease),background .18s var(--ease),
             border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--primary);border:1px solid var(--primary);color:#04120F}
.btn-primary:hover{
  background:var(--primary-hover);border-color:var(--primary-hover);
  transform:translateY(-2px);box-shadow:0 0 0 2px rgba(0,224,184,.28),0 14px 28px rgba(0,0,0,.42);
}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{min-height:36px;padding:0 16px;font-size:13px;border-radius:8px}

/* ---------- hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-color:#0A0B0D;
  background-image:
    linear-gradient(90deg,rgba(10,11,13,.95) 0%,rgba(10,11,13,.86) 44%,rgba(10,11,13,.52) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(242,240,234,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(242,240,234,.045) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.55;
}
.hero-inner{position:relative;z-index:2;padding:44px 0 52px;max-width:840px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--faint);margin-bottom:22px}
.crumb a{color:var(--faint);transition:color .18s var(--ease)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:rgba(242,240,234,.24)}
.crumb .current{color:var(--muted)}
.hero-tagline{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.16em;color:var(--primary);
  margin-bottom:18px;
}
.hero-tagline::before{content:"";width:26px;height:1px;background:var(--primary);display:block}
.page-hero h1{
  font-size:clamp(30px,4.4vw,50px);
  font-weight:900;line-height:1.12;letter-spacing:-.015em;
  margin-bottom:16px;
}
.page-hero .hero-sub{font-size:17px;color:var(--muted);max-width:600px;line-height:1.85}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;
  border-radius:999px;font-size:12px;letter-spacing:.06em;
  border:1px solid rgba(0,224,184,.34);color:var(--primary);background:rgba(0,224,184,.06);
}
.tag-lime{border-color:rgba(216,255,79,.4);color:var(--lime);background:rgba(216,255,79,.08)}
.hero-stats{
  display:flex;flex-wrap:wrap;align-items:center;gap:18px;
  margin-top:30px;padding-top:22px;border-top:1px solid var(--line);
  font-size:12px;color:var(--faint);letter-spacing:.08em;
}
.hero-stats .stat{display:flex;align-items:baseline;gap:8px}
.hero-stats .num{font-family:var(--mono);font-size:19px;font-weight:700;color:var(--text);letter-spacing:.04em}
.hero-stats .divider{width:1px;height:18px;background:var(--line-strong)}

/* ---------- anchor bar ---------- */
.anchor-bar{border-bottom:1px solid var(--line);background:#0C0D10}
.anchor-inner{display:flex;align-items:center;gap:12px;padding:14px 0;flex-wrap:wrap}
.anchor-label{font-size:12px;letter-spacing:.14em;color:var(--faint);margin-right:4px}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;
  border-radius:999px;border:1px solid var(--line);background:var(--raise);
  color:var(--muted);font-size:13px;
  transition:transform .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.chip:hover{color:var(--text);border-color:rgba(0,224,184,.5);transform:translateY(-2px)}
.anchor-count{margin-left:auto;font-size:12px;color:var(--faint)}

/* ---------- sections ---------- */
.section{padding:92px 0}
.section-tight{padding:64px 0}
.sec-head{
  display:flex;flex-direction:column;gap:10px;
  padding-top:24px;border-top:1px solid var(--line);
  margin-bottom:36px;
}
.sec-num{font-family:var(--mono);font-size:12px;letter-spacing:.22em;color:var(--primary)}
.sec-title{
  font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.3;
  padding-left:16px;border-left:1px solid rgba(0,224,184,.5);
}
.sec-sub{font-size:15px;color:var(--muted);max-width:720px;padding-left:17px}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:1fr;gap:8px}
.faq-group{margin-bottom:40px;scroll-margin-top:150px}
.faq-group:last-child{margin-bottom:0}
.faq-group-title{
  display:flex;align-items:center;gap:12px;
  font-size:13px;letter-spacing:.16em;color:var(--faint);
  font-weight:700;margin-bottom:8px;
}
.faq-group-title::after{content:"";flex:1;height:1px;background:var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:16px 4px;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--primary)}
.faq-q span:first-child{flex:1 1 auto}
.faq-mark{position:relative;width:16px;height:16px;flex:0 0 auto}
.faq-mark::before,.faq-mark::after{
  content:"";position:absolute;background:var(--primary);border-radius:1px;
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-mark::before{left:0;top:7px;width:16px;height:2px}
.faq-mark::after{left:7px;top:0;width:2px;height:16px}
.faq-item.open .faq-mark::after{transform:rotate(90deg);opacity:0}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .32s var(--ease);
}
.faq-item.open .faq-a{max-height:520px}
.faq-a-inner{
  padding:0 56px 24px 4px;
  color:var(--muted);font-size:16px;line-height:1.9;max-width:780px;
}

/* ---------- safety cards ---------- */
.safety-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.safety-card{
  position:relative;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 26px 28px;
  transition:transform .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
}
.safety-card:hover{
  transform:translateY(-2px);
  border-color:rgba(0,224,184,.4);
  background:#151821;
  box-shadow:var(--shadow);
}
.safety-num{
  font-family:var(--mono);font-size:34px;font-weight:700;line-height:1;
  color:rgba(242,240,234,.14);letter-spacing:.04em;
}
.safety-card h3{font-size:20px;font-weight:700;margin:18px 0 10px}
.safety-card p{color:var(--muted);font-size:15px;line-height:1.9}
.safety-card .card-line{height:1px;background:var(--line);margin:20px 0 0}

/* ---------- contact ---------- */
.contact-panel{
  display:grid;grid-template-columns:1.05fr .95fr;
  background:var(--panel);border:1px solid var(--line);
  border-radius:18px;overflow:hidden;
}
.contact-form-wrap{padding:40px 36px}
.contact-form-wrap h2{font-size:clamp(22px,2.4vw,28px);font-weight:800;line-height:1.35;margin-bottom:10px}
.contact-form-wrap .lead{color:var(--muted);font-size:15px;margin-bottom:26px;max-width:460px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.field label{font-size:13px;color:var(--muted);letter-spacing:.04em}
.field input,.field select,.field textarea{
  width:100%;background:var(--raise);
  border:1px solid var(--line);border-radius:10px;
  padding:12px 14px;font-size:14px;color:var(--text);
  outline:none;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.field input::placeholder,.field textarea::placeholder{color:var(--faint)}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--primary);
  background:#1D2129;
  box-shadow:0 0 0 3px rgba(0,224,184,.12);
}
.field textarea{min-height:118px;resize:vertical;line-height:1.8}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-note{font-size:12px;color:var(--faint);margin-top:14px;line-height:1.8}
.contact-media{position:relative;min-height:320px;border-left:1px solid var(--line);background:#0E1014}
.contact-media img{width:100%;height:100%;object-fit:cover;opacity:.88}
.contact-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,11,13,.25) 0%,rgba(10,11,13,.78) 100%);
}
.media-caption{
  position:absolute;left:24px;right:24px;bottom:22px;z-index:2;
  font-size:13px;color:var(--muted);line-height:1.8;
  padding-top:14px;border-top:1px solid rgba(242,240,234,.16);
}

/* ---------- cta ---------- */
.cta-section{padding:0 0 96px}
.cta-panel{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:18px;
  padding:44px 40px;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(242,240,234,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(242,240,234,.04) 1px,transparent 1px);
  background-size:40px 40px;
  opacity:.7;
}
.cta-panel > *{position:relative;z-index:2}
.cta-panel h2{font-size:clamp(22px,2.8vw,30px);font-weight:800;line-height:1.35;margin-bottom:10px}
.cta-panel p{color:var(--muted);font-size:15px;max-width:540px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ---------- footer ---------- */
.site-footer{background:#08090B;border-top:1px solid var(--line);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px}
.footer-brand .logo-mark{font-size:20px;font-weight:900}
.brand-full{margin-top:10px;font-size:13px;letter-spacing:.1em;color:var(--primary);font-weight:600}
.footer-brand p{color:var(--muted);font-size:14px;line-height:1.9;margin-top:14px;max-width:340px}
.footer-title{font-size:13px;letter-spacing:.14em;color:var(--text);font-weight:700;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:var(--muted);font-size:14px;transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-links a:hover{color:var(--primary);transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 30px;display:flex;justify-content:space-between;
  gap:12px;flex-wrap:wrap;color:var(--faint);font-size:13px;
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .section{padding:76px 0}
  .safety-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .contact-panel{grid-template-columns:1fr}
  .contact-media{min-height:240px;border-left:0;border-top:1px solid var(--line)}
  .cta-panel{flex-direction:column;align-items:flex-start;padding:38px 30px}
}
@media (max-width:960px){
  .header-inner{flex-wrap:wrap;height:auto;padding:12px 0;gap:12px}
  .nav-search{order:3;flex:1 1 100%;max-width:100%;margin:0}
  .menu-toggle{display:grid}
  .cat-bar{display:none}
  .header-actions{margin-left:auto}
  .hero-inner{padding:34px 0 42px}
  .faq-a-inner{padding-right:8px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section-tight{padding:44px 0}
  .safety-grid{grid-template-columns:1fr}
  .contact-form-wrap{padding:28px 20px}
  .field-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-brand p{max-width:100%}
  .hero-stats{gap:12px;font-size:11px}
  .hero-stats .divider{display:none}
  .faq-q{font-size:16px;min-height:58px}
  .faq-a-inner{font-size:15px}
  .anchor-count{margin-left:0;width:100%}
  .cta-section{padding-bottom:64px}
}
@media (max-width:520px){
  .page-hero h1{font-size:28px}
  .page-hero .hero-sub{font-size:15px}
  .btn{width:100%;padding:0 18px}
  .btn-sm{width:auto}
  .hero-tags{gap:8px}
  .cta-actions{width:100%}
  .contact-media{min-height:200px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}