/* roulang page: index */
:root{
  --ink:#0B0D10;
  --surface:#14171C;
  --surface-2:#1B1F26;
  --surface-3:#101316;
  --line:#262B33;
  --line-2:#3A424C;
  --brand:#22E0A1;
  --brand-soft:rgba(34,224,161,.12);
  --brand-line:rgba(34,224,161,.40);
  --coral:#FF6B4A;
  --violet:#8B7BFF;
  --paper:#F5F3EE;
  --paper-line:#E2DED4;
  --text:#F2F4F1;
  --muted:#A8AEB6;
  --muted-strong:#CBD2D6;
  --paper-ink:#101316;
  --paper-muted:#4B5158;
  --r-panel:20px;
  --r-card:14px;
  --r-chip:8px;
  --r-btn:12px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:240ms;
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  --container:1280px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--ink);color:var(--text);
  font-family:var(--font-sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,ul,ol,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;}
textarea{font:inherit;}
.mono{font-variant-numeric:tabular-nums;}
::selection{background:rgba(34,224,161,.28);color:#fff;}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--ink);}
::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:999px;border:2px solid var(--ink);}
::-webkit-scrollbar-thumb:hover{background:var(--brand);}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:20px;}
@media (min-width:768px){.container{padding-inline:32px;}}
@media (min-width:1024px){.container{padding-inline:48px;}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,13,16,.84);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;height:72px;justify-content:space-between;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;padding:4px;border-radius:12px;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  border:1.5px solid var(--brand);color:var(--brand);flex-shrink:0;
  box-shadow:0 0 18px -6px rgba(34,224,161,.65);
  transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.brand:hover .brand-mark{box-shadow:0 0 24px -4px rgba(34,224,161,.9);transform:translateY(-1px);}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;line-height:1.2;}
.brand-text em{font-style:normal;color:var(--brand);}
.nav-panel{
  display:none;align-items:center;gap:4px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:16px;padding:6px;
}
@media (min-width:1024px){.nav-panel{display:flex;}}
.nav-item{
  position:relative;display:flex;align-items:center;height:40px;
  padding:0 14px;border-radius:12px;font-size:15px;color:var(--muted);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
  white-space:nowrap;
}
.nav-item:hover{background:var(--surface-2);color:var(--brand);}
.nav-item.is-active{background:var(--brand-soft);color:var(--brand);}
.nav-item.is-active::before{
  content:"";position:absolute;left:14px;right:14px;top:0;height:2px;
  background:var(--brand);border-radius:2px;
}
.header-cta{display:none;}
@media (min-width:1024px){.header-cta{display:block;margin-left:24px;}}
.menu-toggle{
  display:grid;place-items:center;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);color:var(--text);flex-shrink:0;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.menu-toggle:hover{border-color:var(--brand);color:var(--brand);}
@media (min-width:1024px){.menu-toggle{display:none;}}

.drawer{
  position:fixed;inset:0;z-index:120;background:var(--ink);
  display:flex;flex-direction:column;padding:20px;
  overflow-y:auto;opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur);
  padding-bottom:calc(20px + env(safe-area-inset-bottom));
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;height:44px;}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;font-size:22px;line-height:1;color:var(--muted);transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);}
.drawer-close:hover{color:var(--brand);border-color:var(--brand);}
.drawer-nav{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:28px;}
.drawer-nav a{
  display:flex;align-items:center;min-height:68px;padding:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  font-size:15px;font-weight:600;color:var(--text);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.drawer-nav a:hover,.drawer-nav a.is-active{border-color:var(--brand-line);color:var(--brand);background:var(--surface-2);}
.drawer-nav a:first-child{grid-column:span 2;}
.drawer-foot{margin-top:auto;padding-top:28px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  white-space:nowrap;cursor:pointer;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),filter var(--dur) var(--ease);
}
.btn-primary{background:var(--brand);color:#08130F;box-shadow:0 10px 30px -12px rgba(34,224,161,.7);}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 14px 34px -10px rgba(34,224,161,.55);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{border-color:var(--line-2);color:var(--text);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.45;cursor:not-allowed;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:var(--muted);transition:color var(--dur) var(--ease);}
.link-arrow svg{transition:transform var(--dur) var(--ease);}
.link-arrow:hover{color:var(--brand);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ============ 通用板块 ============ */
.section{padding-block:56px;}
@media (min-width:1024px){.section{padding-block:104px;}}
.section-tight{padding-block:48px;}
@media (min-width:1024px){.section-tight{padding-block:72px;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.section-label{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.24em;color:var(--brand);}
.section-label::before{content:"";width:14px;height:2px;background:var(--brand);border-radius:2px;}
.section-title{position:relative;padding-left:14px;font-size:24px;font-weight:700;letter-spacing:-.01em;line-height:1.3;margin-top:12px;}
.section-title::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:3px;border-radius:3px;background:var(--brand);}
@media (min-width:1024px){.section-title{font-size:34px;}}
.section-desc{margin-top:10px;font-size:15px;color:var(--muted);max-width:56ch;}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;display:flex;align-items:center;border-bottom:1px solid var(--line);min-height:72vh;}
@media (min-width:1024px){.hero{min-height:88vh;}}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;animation:kenburns 20s var(--ease) forwards;}
.hero-mask{position:absolute;inset:0;background:linear-gradient(90deg,#0B0D10 0%,rgba(11,13,16,.92) 22%,rgba(11,13,16,.55) 55%,rgba(11,13,16,.88) 100%);}
.hero-inner{position:relative;z-index:2;display:grid;gap:40px;padding-block:64px;}
@media (min-width:1024px){.hero-inner{grid-template-columns:minmax(0,1fr) 268px;align-items:center;padding-block:104px;}}
.hero-copy{max-width:720px;}
.hero-copy > *{opacity:0;transform:translateY(12px);animation:fadeUp 400ms var(--ease) forwards;}
.hero-copy > *:nth-child(1){animation-delay:.06s;}
.hero-copy > *:nth-child(2){animation-delay:.14s;}
.hero-copy > *:nth-child(3){animation-delay:.22s;}
.hero-copy > *:nth-child(4){animation-delay:.30s;}
.hero-copy > *:nth-child(5){animation-delay:.38s;}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.18em;color:var(--brand);}
.eyebrow::before{content:"";width:1px;height:14px;background:var(--brand);}
.hero h1{margin-top:18px;font-size:32px;line-height:1.15;font-weight:800;letter-spacing:-.02em;}
@media (min-width:768px){.hero h1{font-size:44px;}}
@media (min-width:1024px){.hero h1{font-size:48px;}}
.hero h1 span{color:var(--brand);}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--muted-strong);max-width:34ch;}
@media (min-width:768px){.hero-sub{max-width:26em;}}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:30px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;
  border:1px solid var(--line-2);border-radius:999px;font-size:13px;color:var(--muted);
  background:rgba(20,23,28,.6);transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.chip:hover{border-color:var(--brand-line);color:var(--brand);}
.hero-card{
  display:none;background:var(--surface);border:1px solid var(--brand-line);
  border-radius:var(--r-panel);overflow:hidden;box-shadow:0 24px 60px -30px rgba(0,0,0,.9);
}
@media (min-width:1024px){.hero-card{display:block;}}
.hero-card img{width:100%;aspect-ratio:2/3;object-fit:cover;}
.hero-card figcaption{padding:14px 16px;font-size:13px;line-height:1.7;color:var(--muted);border-top:1px solid var(--line);}

/* ============ 横滑轨道 ============ */
.rail-nav{display:none;gap:10px;}
@media (min-width:768px){.rail-nav{display:flex;}}
.rail-btn{
  width:36px;height:36px;border-radius:999px;border:1px solid var(--line-2);
  display:grid;place-items:center;color:var(--muted);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.rail-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding-bottom:14px;scrollbar-width:thin;scrollbar-color:var(--line-2) transparent;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-track{background:transparent;}
.rail::-webkit-scrollbar-thumb{background:var(--line-2);border:0;border-radius:999px;}
.rail-card{flex:0 0 168px;scroll-snap-align:start;}
@media (min-width:768px){.rail-card{flex:0 0 200px;}}
.rail-thumb{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--surface);
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.rail-card:hover .rail-thumb{border-color:var(--brand-line);transform:translateY(-4px);box-shadow:0 12px 30px -10px rgba(34,224,161,.28);}
.rail-thumb img{width:100%;aspect-ratio:2/3;object-fit:cover;transition:transform 400ms var(--ease);}
.rail-card:hover .rail-thumb img{transform:scale(1.04);}
.rail-overlay{position:absolute;left:0;right:0;bottom:0;padding:12px;background:linear-gradient(180deg,rgba(11,13,16,0) 0%,rgba(11,13,16,.94) 72%);}
.rail-overlay strong{display:block;font-size:14px;font-weight:600;line-height:1.45;color:#fff;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.rail-overlay small{display:block;margin-top:4px;font-size:12px;color:var(--muted);}

/* ============ 热播推荐 ============ */
.hot-grid{display:grid;gap:20px;}
@media (min-width:1024px){.hot-grid{grid-template-columns:repeat(12,1fr);gap:24px;}.hot-main{grid-column:span 8;}.hot-side{grid-column:span 4;}}
.media-card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-panel);overflow:hidden;transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);}
.media-card:hover{border-color:var(--brand-line);transform:translateY(-4px);box-shadow:0 12px 30px -10px rgba(34,224,161,.28);}
.media-thumb{position:relative;overflow:hidden;background:var(--surface-2);}
.media-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 400ms var(--ease);}
.media-card:hover .media-thumb img{transform:scale(1.04);}
.media-body{padding:22px 24px 26px;}
.media-body h3{font-size:22px;font-weight:700;line-height:1.4;letter-spacing:-.01em;}
.media-body p{margin-top:12px;font-size:15px;color:var(--muted);line-height:1.8;}
.media-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:20px;}
.badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:var(--r-chip);font-size:13px;line-height:1;}
.badge-brand{background:var(--brand-soft);color:var(--brand);}
.badge-violet{background:rgba(139,123,255,.14);color:var(--violet);}
.badge-coral{color:#FFD9D0;background:rgba(255,107,74,.14);}
.badge-coral i{width:6px;height:6px;border-radius:999px;background:var(--coral);display:inline-block;animation:pulse 2.4s infinite;}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.35;}}
.badge-outline{border:1px solid var(--line-2);color:var(--muted);background:transparent;}
.hot-badge{position:absolute;top:14px;left:14px;}
.side-list{display:flex;flex-direction:column;gap:16px;}
@media (max-width:1023px){.side-list{flex-direction:row;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:12px;}.side-item{flex:0 0 280px;scroll-snap-align:start;}}
.side-item{display:flex;gap:14px;padding:12px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),background var(--dur) var(--ease);}
.side-item:hover{border-color:var(--brand-line);background:var(--surface-2);transform:translateY(-2px);}
.side-item img{width:90px;height:120px;object-fit:cover;border-radius:10px;background:var(--surface-2);flex-shrink:0;}
.side-item h4{font-size:16px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.side-item span{margin-top:6px;display:inline-block;font-size:13px;color:var(--muted);}
.side-item p{margin-top:6px;font-size:13px;color:var(--muted);line-height:1.6;}

/* ============ 数据条 ============ */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-panel);overflow:hidden;}
@media (min-width:768px){.stats{grid-template-columns:repeat(4,1fr);}}
.stat{background:var(--surface);padding:26px 22px;}
.stat b{display:block;font-size:30px;font-weight:800;letter-spacing:-.02em;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2;}
.stat span{display:block;margin-top:6px;font-size:14px;color:var(--muted);}

/* ============ 片单面板 ============ */
.panel-grid{display:grid;gap:24px;}
@media (min-width:768px){.panel-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.panel-grid{grid-template-columns:repeat(3,1fr);}}
.panel{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-panel);padding:24px;
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.panel:hover{border-color:var(--brand-line);transform:translateY(-4px);box-shadow:0 12px 30px -10px rgba(34,224,161,.28);}
.panel h3{margin-top:18px;font-size:20px;font-weight:700;line-height:1.4;}
.panel p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.8;flex:1;}
.panel .link-arrow{margin-top:18px;}
.panel-thumbs{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;}
.panel-thumbs img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:10px;background:var(--surface-2);border:1px solid var(--line);transition:transform 400ms var(--ease);}
.panel:hover .panel-thumbs img{transform:scale(1.02);}

/* ============ 最新信息 ============ */
.news-grid{display:grid;gap:20px;}
@media (min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr);}}
.news-card{
  display:grid;grid-template-columns:1fr;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.news-card:hover{border-color:var(--brand-line);transform:translateY(-4px);box-shadow:0 12px 30px -10px rgba(34,224,161,.28);}
.news-thumb{overflow:hidden;background:var(--surface-2);}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 400ms var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.04);}
@media (min-width:768px){
  .news-card{grid-template-columns:200px minmax(0,1fr);}
  .news-thumb img{width:100%;height:100%;min-height:152px;aspect-ratio:auto;}
}
.news-body{padding:20px 22px 22px;}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.news-meta time{font-size:13px;color:var(--muted);}
.news-body h3{margin-top:12px;font-size:18px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body .link-arrow{margin-top:14px;}
.empty-state{
  display:flex;flex-direction:column;align-items:center;text-align:center;gap:16px;
  padding:56px 24px;background:var(--surface);border:1px dashed var(--line-2);border-radius:var(--r-panel);
}
.empty-state svg{color:var(--brand);}
.empty-state p{font-size:15px;color:var(--muted);}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-panel);
  padding:32px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
@media (min-width:1024px){.cta-band{padding:44px 48px;min-height:220px;}}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.032) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.032) 1px,transparent 1px);
  background-size:32px 32px;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:999px;
  background:radial-gradient(circle,rgba(34,224,161,.16) 0%,rgba(34,224,161,0) 70%);pointer-events:none;
}
.cta-copy{position:relative;z-index:2;max-width:620px;}
.cta-copy h2{font-size:24px;font-weight:800;letter-spacing:-.01em;line-height:1.35;}
@media (min-width:1024px){.cta-copy h2{font-size:30px;}}
.cta-copy p{margin-top:12px;font-size:15px;color:var(--muted);}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px;}

/* ============ FAQ（浅色区段） ============ */
.faq-section{background:var(--paper);color:var(--paper-ink);padding-block:56px;}
@media (min-width:1024px){.faq-section{padding-block:104px;}}
.faq-section .section-title{color:var(--paper-ink);}
.faq-section .section-desc{color:var(--paper-muted);}
.faq-list{margin-top:8px;max-width:920px;}
.faq-item{background:#fff;border:1px solid var(--paper-line);border-radius:var(--r-card);overflow:hidden;margin-bottom:12px;transition:box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);}
.faq-item:hover{border-color:#CFC9BB;}
.faq-item.is-open{border-color:var(--brand);box-shadow:0 12px 32px -16px rgba(16,19,22,.18);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--paper-ink);
}
.faq-icon{width:26px;height:26px;flex-shrink:0;border-radius:8px;border:1px solid var(--paper-line);display:grid;place-items:center;color:var(--paper-muted);transition:transform 300ms var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand);border-color:var(--brand);color:#08130F;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows 300ms var(--ease);}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a p{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--paper-muted);}

/* ============ 页脚 ============ */
.site-footer{background:#08090B;border-top:1px solid var(--line);padding-block:56px 28px;}
.footer-grid{display:grid;gap:32px;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;}}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--muted);line-height:1.8;max-width:30ch;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.footer-title{font-size:14px;font-weight:700;color:var(--text);letter-spacing:.02em;}
.footer-links{margin-top:16px;display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:var(--muted);transition:color var(--dur) var(--ease);}
.footer-links a:hover{color:var(--brand);}
.footer-links span{font-size:14px;color:var(--muted);}
.sub-form{margin-top:16px;display:flex;flex-direction:column;gap:12px;}
.sub-input{
  height:48px;border-radius:var(--r-btn);background:var(--surface-3);
  border:1px solid #2A2F37;padding:0 16px;color:var(--text);font-size:14px;width:100%;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.sub-input::placeholder{color:#6B7280;}
.sub-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(34,224,161,.12);}
.sub-note{font-size:13px;color:var(--muted);min-height:20px;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  font-size:13px;color:#6E747C;
}
.footer-bottom a{color:#8A9099;transition:color var(--dur) var(--ease);}
.footer-bottom a:hover{color:var(--brand);}

/* ============ 回到顶部 ============ */
.to-top{
  position:fixed;right:20px;bottom:20px;z-index:80;
  width:48px;height:48px;border-radius:14px;
  border:1px solid var(--brand-line);background:rgba(11,13,16,.9);
  color:var(--brand);display:grid;place-items:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur),background var(--dur) var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand);color:#08130F;}

/* ============ 动效降级 ============ */
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .hero-bg{animation:none !important;transform:none !important;}
  .hero-copy > *{opacity:1 !important;transform:none !important;}
}

/* roulang page: article */
:root{
  --ink:#0B0D10;
  --surface:#14171C;
  --surface-2:#1B1F26;
  --line:#262B33;
  --line-2:#3A424C;
  --brand:#22E0A1;
  --coral:#FF6B4A;
  --violet:#8B7BFF;
  --paper:#F5F3EE;
  --text:#F2F4F1;
  --muted:#A8AEB6;
  --ink-text:#101316;
  --ink-muted:#4B5158;
  --r-panel:20px;
  --r-card:14px;
  --r-btn:12px;
  --r-chip:8px;
  --t:240ms cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;}
h1,h2,h3,h4,p{margin:0;}
::selection{background:rgba(34,224,161,.28);}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 48px;}
@media (max-width:1024px){.container{padding:0 32px;}}
@media (max-width:640px){.container{padding:0 20px;}}

.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,13,16,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;border:1.5px solid var(--brand);
  display:grid;place-items:center;background:rgba(34,224,161,.08);flex:0 0 auto;
}
.brand-mark i{width:0;height:0;border-left:9px solid var(--brand);border-top:6px solid transparent;border-bottom:6px solid transparent;margin-left:2px;}
.brand-text em{font-style:normal;color:var(--brand);}

.nav-panel{
  display:flex;align-items:center;gap:4px;padding:6px;
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
}
.nav-item{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 14px;border-radius:12px;
  font-size:15px;color:var(--muted);white-space:nowrap;transition:var(--t);
}
.nav-item:hover{background:var(--surface-2);color:var(--brand);}
.nav-item.is-active{background:rgba(34,224,161,.12);color:var(--brand);}
.nav-item.is-active::before{
  content:"";position:absolute;top:-7px;left:14px;right:14px;height:2px;
  background:var(--brand);border-radius:2px;
}
.header-cta{margin-left:24px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:var(--t);text-align:center;
}
.btn-primary{background:var(--brand);color:#05130D;box-shadow:0 0 0 rgba(34,224,161,0);}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 12px 30px -10px rgba(34,224,161,.45);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--line-2);color:var(--text);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.btn-block{width:100%;}

.ghost-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:15px;font-weight:600;}
.ghost-link i{font-style:normal;transition:transform var(--t);}
.ghost-link:hover i{transform:translateX(4px);}
.ghost-link:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}

.menu-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);
  cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.menu-toggle span{width:18px;height:2px;background:var(--text);border-radius:2px;transition:var(--t);}
.menu-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.menu-toggle.is-open span:nth-child(2){opacity:0;}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.mobile-drawer{
  position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;
  background:var(--ink);padding:24px 20px 140px;overflow-y:auto;
  opacity:0;transform:translateY(-12px);pointer-events:none;
  transition:opacity var(--t),transform var(--t);
}
.mobile-drawer.is-open{opacity:1;transform:none;pointer-events:auto;}
.drawer-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.drawer-item{
  display:flex;flex-direction:column;gap:6px;padding:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  font-size:15px;color:var(--text);transition:var(--t);
}
.drawer-item:hover,.drawer-item.is-active{border-color:rgba(34,224,161,.45);color:var(--brand);}
.drawer-item small{color:var(--muted);font-size:12px;font-weight:400;}
.drawer-cta{
  position:fixed;left:0;right:0;bottom:0;padding:16px 20px calc(16px + env(safe-area-inset-bottom));
  background:linear-gradient(180deg,rgba(11,13,16,0),rgba(11,13,16,.96) 40%);
}

@media (max-width:1024px){
  .nav-panel,.header-cta{display:none;}
  .menu-toggle{display:flex;}
}

/* ---------- 文章头部 ---------- */
.article-hero{
  padding:48px 0 44px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(900px 360px at 12% -20%, rgba(34,224,161,.10), transparent 62%),
    radial-gradient(700px 300px at 90% -10%, rgba(139,123,255,.10), transparent 65%),
    var(--ink);
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line-2);}
.breadcrumb .current{color:var(--text);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-title{
  margin:20px 0 18px;max-width:920px;
  font-size:38px;line-height:1.24;font-weight:800;letter-spacing:-.02em;
}
@media (max-width:768px){.article-title{font-size:28px;line-height:1.3;}}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:13px;color:var(--muted);}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:var(--r-chip);font-size:13px;
  background:rgba(34,224,161,.12);color:var(--brand);border:1px solid rgba(34,224,161,.26);
}
.badge-violet{background:rgba(139,123,255,.14);color:#B8ACFF;border-color:rgba(139,123,255,.3);}
.dot-coral{width:7px;height:7px;border-radius:50%;background:var(--coral);display:inline-block;}
.meta-text{font-size:13px;color:var(--muted);}
.back-line{margin-top:22px;display:flex;flex-wrap:wrap;gap:20px;align-items:center;}

/* ---------- 主体布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:48px;padding:56px 0 96px;align-items:start;
}
@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr;gap:40px;padding:40px 0 72px;}
}

.article-body{
  max-width:760px;font-size:17px;line-height:1.9;color:#E4E8E4;word-break:break-word;
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;margin:48px 0 18px;padding-left:16px;
  font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.01em;color:var(--text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  background:var(--brand);border-radius:3px;
}
.article-body h3{margin:34px 0 14px;font-size:22px;font-weight:600;color:var(--text);}
.article-body h4{margin:28px 0 12px;font-size:18px;font-weight:600;color:var(--text);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em;}
.article-body li{margin:.4em 0;}
.article-body ul li::marker,.article-body ol li::marker{color:var(--brand);}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;background:var(--surface);
  border-left:3px solid var(--brand);border-radius:12px;color:#D6DAD6;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:14px;margin:26px 0;}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(34,224,161,.35);}
.article-body a:hover{border-bottom-color:var(--brand);}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:12px 14px;text-align:left;}
.article-body th{background:var(--surface-2);font-weight:600;}
.article-body pre{
  background:#0E1115;border:1px solid var(--line);border-radius:12px;
  padding:18px;overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body code{background:#0E1115;border-radius:6px;padding:2px 6px;font-size:.92em;}
.article-body pre code{background:none;padding:0;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:40px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:-14px;}

.empty-card{
  border:1px dashed var(--line-2);border-radius:var(--r-panel);
  background:var(--surface);padding:48px 32px;text-align:center;
}
.empty-card h2{font-size:22px;font-weight:700;margin-bottom:10px;}
.empty-card p{color:var(--muted);font-size:15px;margin-bottom:24px;}

/* ---------- 文末 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:44px 0 0;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border:1px solid var(--line-2);border-radius:999px;font-size:13px;
  color:var(--muted);transition:var(--t);
}
.tag:hover{border-color:var(--brand);color:var(--brand);}

.action-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:24px;}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;min-width:40px;padding:0 14px;border-radius:12px;
  background:transparent;border:1px solid var(--line-2);color:var(--muted);
  font-size:14px;cursor:pointer;transition:var(--t);
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);}
.icon-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px;}
@media (max-width:640px){.pager{grid-template-columns:1fr;}}
.pager-card{
  display:block;padding:20px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);transition:var(--t);
}
.pager-card:hover{transform:translateY(-4px);border-color:rgba(34,224,161,.4);box-shadow:0 12px 30px -10px rgba(34,224,161,.28);}
.pager-card span{display:block;font-size:12px;letter-spacing:.18em;color:var(--brand);margin-bottom:8px;}
.pager-card strong{display:block;font-size:16px;font-weight:600;line-height:1.5;color:var(--text);}
.pager-card.is-next{text-align:right;}

.related-block{margin-top:64px;}
.section-label{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.28em;color:var(--brand);margin-bottom:10px;
}
.section-label::before{content:"";width:1px;height:12px;background:var(--brand);display:inline-block;}
.section-title{font-size:26px;font-weight:700;letter-spacing:-.01em;margin-bottom:24px;}
@media (max-width:768px){.section-title{font-size:21px;}}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
@media (max-width:1024px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:640px){.card-grid{grid-template-columns:1fr;}}
.media-card{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;transition:var(--t);
}
.media-card:hover{transform:translateY(-4px);border-color:rgba(34,224,161,.4);box-shadow:0 12px 30px -10px rgba(34,224,161,.28);}
.media-card .thumb{aspect-ratio:16/9;background:var(--surface-2);overflow:hidden;}
.media-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.22,.61,.36,1);}
.media-card:hover .thumb img{transform:scale(1.04);}
.media-card .body{padding:18px;}
.media-card h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.media-card p{font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ---------- 侧边栏 ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
@media (max-width:1024px){.sidebar{position:static;}}
.panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-panel);padding:22px;
}
.panel-title{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;margin-bottom:16px;}
.panel-title::before{content:"";width:3px;height:14px;border-radius:3px;background:var(--brand);}
.side-item{
  display:grid;grid-template-columns:72px 1fr;gap:12px;align-items:center;
  padding:12px 0;border-top:1px solid var(--line);transition:var(--t);
}
.side-item:first-of-type{border-top:none;padding-top:0;}
.side-item .side-thumb{
  aspect-ratio:16/11;border-radius:10px;overflow:hidden;background:var(--surface-2);
}
.side-item .side-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.22,.61,.36,1);}
.side-item:hover .side-thumb img{transform:scale(1.05);}
.side-item strong{display:block;font-size:14px;font-weight:600;line-height:1.55;color:var(--text);}
.side-item:hover strong{color:var(--brand);}
.side-item em{font-style:normal;font-size:12px;color:var(--muted);}
.cat-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 14px;border:1px solid var(--line);border-radius:12px;
  font-size:14px;color:var(--muted);transition:var(--t);margin-bottom:10px;
}
.cat-link:last-child{margin-bottom:0;}
.cat-link:hover{border-color:rgba(34,224,161,.45);color:var(--brand);background:var(--surface-2);}
.cta-panel{
  border-radius:var(--r-panel);padding:24px;
  background:linear-gradient(150deg,rgba(34,224,161,.16),rgba(139,123,255,.12)),var(--surface-2);
  border:1px solid rgba(34,224,161,.28);
}
.cta-panel h3{font-size:18px;font-weight:700;margin-bottom:8px;}
.cta-panel p{font-size:14px;color:var(--muted);line-height:1.75;margin-bottom:16px;}

/* ---------- FAQ ---------- */
.faq-section{background:var(--paper);color:var(--ink-text);padding:88px 0;}
@media (max-width:768px){.faq-section{padding:60px 0;}}
.faq-section .section-label{color:#0F8F66;}
.faq-section .section-label::before{background:#0F8F66;}
.faq-section .section-title{color:var(--ink-text);}
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{background:#fff;border:1px solid #E2DED4;border-radius:14px;overflow:hidden;transition:var(--t);}
.faq-item:hover{border-color:#C9C2B4;}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;width:100%;padding:14px 20px;background:none;border:none;
  text-align:left;font-size:16px;font-weight:600;color:var(--ink-text);cursor:pointer;
}
.faq-q .sign{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  border:1px solid #C9C2B4;display:grid;place-items:center;
  font-size:15px;line-height:1;color:#7A7264;transition:transform var(--t),color var(--t),border-color var(--t);
}
.faq-item.is-open .faq-q .sign{transform:rotate(180deg);color:#0F8F66;border-color:#0F8F66;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows 300ms cubic-bezier(.22,.61,.36,1);}
.faq-item.is-open .faq-a{grid-template-rows:1fr;}
.faq-a > div{overflow:hidden;}
.faq-a p{padding:0 20px 18px;font-size:15px;line-height:1.8;color:var(--ink-muted);}
.faq-q:focus-visible{outline:2px solid #0F8F66;outline-offset:-2px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#08090B;border-top:1px solid var(--line);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:40px;}
@media (max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;}}
.footer-brand .brand-text{font-size:17px;font-weight:800;}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.8;margin:14px 0 16px;max-width:34ch;}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border-radius:var(--r-chip);font-size:12px;
  border:1px solid var(--line);color:var(--muted);background:var(--surface);
}
.footer-title{font-size:14px;font-weight:700;margin-bottom:18px;color:var(--text);}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a,.footer-links span{font-size:14px;color:var(--muted);transition:var(--t);}
.footer-links a:hover{color:var(--brand);}
.sub-form{display:flex;flex-direction:column;gap:10px;}
.sub-input{
  height:48px;padding:0 14px;border-radius:12px;
  background:#101316;border:1px solid #2A2F37;color:var(--text);
  font-size:14px;transition:var(--t);
}
.sub-input::placeholder{color:#6B7280;}
.sub-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(34,224,161,.12);}
.sub-input.is-error{border-color:var(--coral);}
.sub-note{font-size:12px;color:var(--muted);}
.sub-note.is-error{color:var(--coral);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  font-size:13px;color:#6E757D;
}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- 回到顶部 ---------- */
#backTop{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:48px;height:48px;border-radius:14px;
  display:grid;place-items:center;cursor:pointer;
  background:rgba(20,23,28,.9);border:1px solid rgba(34,224,161,.5);color:var(--brand);
  opacity:0;pointer-events:none;transition:var(--t);
}
#backTop.is-show{opacity:1;pointer-events:auto;}
#backTop:hover{background:var(--brand);color:#05130D;}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
  .media-card:hover,.pager-card:hover,.btn-primary:hover{transform:none;}
}

/* roulang page: category1 */
:root{
    --ink:#0B0D10;
    --surface:#14171C;
    --surface-2:#1B1F26;
    --surface-3:#101316;
    --line:#262B33;
    --line-2:#3A424C;
    --brand:#22E0A1;
    --coral:#FF6B4A;
    --violet:#8B7BFF;
    --paper:#F5F3EE;
    --text:#F2F4F1;
    --muted:#A8AEB6;
    --muted-2:#6B7280;
    --r-panel:20px;
    --r-card:14px;
    --r-btn:12px;
    --r-chip:8px;
    --ease:cubic-bezier(.22,.61,.36,1);
    --dur:240ms;
    --glow:0 12px 30px -10px rgba(34,224,161,.28);
    --maxw:1280px;
  }

  *,*::before,*::after{box-sizing:border-box;}

  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}

  body{
    margin:0;
    background:var(--ink);
    color:var(--text);
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
    font-size:17px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }

  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button,input{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  p{margin:0;}

  h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.25;}

  ::selection{background:rgba(34,224,161,.28);color:#fff;}

  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

  .container{
    width:100%;
    max-width:var(--maxw);
    margin:0 auto;
    padding:0 20px;
  }
  @media (min-width:768px){ .container{padding:0 32px;} }
  @media (min-width:1024px){ .container{padding:0 48px;} }

  /* 顶部导航 */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(11,13,16,.88);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
  }

  .header-inner{
    display:flex;
    align-items:center;
    gap:20px;
    height:72px;
  }

  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    flex:0 0 auto;
  }

  .brand-mark{
    width:34px;
    height:34px;
    border:2px solid var(--brand);
    border-radius:10px;
    display:grid;
    place-items:center;
    box-shadow:0 0 0 4px rgba(34,224,161,.08);
    flex:0 0 34px;
  }

  .brand-mark-inner{
    width:0;
    height:0;
    border-style:solid;
    border-width:7px 0 7px 12px;
    border-color:transparent transparent transparent var(--brand);
    margin-left:2px;
  }

  .brand-text{
    font-size:17px;
    font-weight:800;
    letter-spacing:-.02em;
    white-space:nowrap;
  }
  .brand-text em{font-style:normal;color:var(--brand);}

  .nav-panel{
    display:flex;
    align-items:center;
    gap:4px;
    padding:6px;
    margin:0 auto;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:16px;
  }

  .nav-item{
    position:relative;
    display:flex;
    align-items:center;
    height:40px;
    padding:0 14px;
    border-radius:12px;
    font-size:15px;
    font-weight:500;
    color:var(--muted);
    white-space:nowrap;
    transition:background var(--dur) var(--ease), color var(--dur) var(--ease);
  }

  .nav-item:hover{background:var(--surface-2);color:var(--brand);}

  .nav-item.is-active{background:rgba(34,224,161,.12);color:var(--brand);font-weight:600;}

  .nav-item.is-active::before{
    content:"";
    position:absolute;
    top:-7px;
    left:14px;
    right:14px;
    height:2px;
    border-radius:2px;
    background:var(--brand);
  }

  .header-actions{
    display:flex;
    align-items:center;
    gap:16px;
    flex:0 0 auto;
  }

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:46px;
    padding:0 22px;
    border-radius:var(--r-btn);
    border:1px solid transparent;
    font-size:15px;
    font-weight:600;
    cursor:pointer;
    white-space:nowrap;
    transition:transform var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  }

  .btn-primary{background:var(--brand);color:#07120D;}
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:var(--glow);}
  .btn-primary:active{transform:translateY(0);box-shadow:none;}

  .btn-ghost{background:transparent;border-color:var(--line-2);color:var(--text);}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(0);}

  .btn-block{width:100%;}

  .burger{
    display:none;
    width:44px;
    height:44px;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:5px;
    border:1px solid var(--line-2);
    border-radius:12px;
    background:transparent;
    cursor:pointer;
    transition:border-color var(--dur) var(--ease);
  }
  .burger:hover{border-color:var(--brand);}
  .burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);}

  /* 移动端抽屉 */
  .drawer{
    position:fixed;
    inset:0;
    z-index:80;
    display:flex;
    flex-direction:column;
    padding:20px;
    padding-bottom:calc(20px + env(safe-area-inset-bottom));
    background:rgba(11,13,16,.98);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    opacity:0;
    visibility:hidden;
    transform:translateY(-12px);
    transition:opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease);
  }
  .drawer.is-open{opacity:1;visibility:visible;transform:none;}

  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:16px;}
  .drawer-close{
    width:44px;height:44px;border-radius:12px;border:1px solid var(--line-2);
    background:transparent;cursor:pointer;display:grid;place-items:center;font-size:20px;line-height:1;
    transition:border-color var(--dur) var(--ease), color var(--dur) var(--ease);
  }
  .drawer-close:hover{border-color:var(--brand);color:var(--brand);}

  .drawer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:28px;}
  .drawer-item{
    display:flex;align-items:center;min-height:64px;padding:12px 14px;
    border:1px solid var(--line);border-radius:var(--r-card);
    background:var(--surface);font-size:15px;color:var(--muted);
    transition:border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
  }
  .drawer-item:hover{border-color:rgba(34,224,161,.4);color:var(--brand);}
  .drawer-item.is-active{background:rgba(34,224,161,.12);border-color:rgba(34,224,161,.4);color:var(--brand);font-weight:600;}
  .drawer-foot{margin-top:auto;padding-top:28px;}

  /* 公共板块 */
  .section{padding:64px 0;}
  @media (min-width:1024px){ .section{padding:104px 0;} }

  .section-tint{
    background:var(--surface-3);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }

  .section-surface{background:var(--surface);}

  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:12px;
    font-weight:700;
    letter-spacing:.3em;
    color:var(--brand);
  }
  .eyebrow::before{
    content:"";
    width:1px;
    height:12px;
    background:var(--brand);
    display:inline-block;
  }

  .section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:24px;
    flex-wrap:wrap;
    margin-bottom:36px;
  }

  .section-title{font-size:26px;font-weight:700;margin-top:14px;}
  @media (min-width:768px){ .section-title{font-size:32px;} }

  .section-desc{margin-top:10px;color:var(--muted);font-size:16px;max-width:58ch;}

  .ghost-link{
    display:inline-flex;
    align-items:center;
    gap:8px;
    min-height:44px;
    font-size:15px;
    font-weight:600;
    color:var(--muted);
    transition:color var(--dur) var(--ease);
  }
  .ghost-link .arrow{transition:transform var(--dur) var(--ease);}
  .ghost-link:hover{color:var(--brand);}
  .ghost-link:hover .arrow{transform:translateX(4px);}

  /* 分类页 Hero */
  .cat-hero{
    position:relative;
    overflow:hidden;
    min-height:400px;
    display:flex;
    align-items:center;
    border-bottom:1px solid var(--line);
  }

  .hero-bg{
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center;
    animation:kenburns 20s ease-out forwards;
  }

  .cat-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(90deg,rgba(11,13,16,.95) 0%,rgba(11,13,16,.80) 48%,rgba(11,13,16,.93) 100%);
  }

  .cat-hero-inner{
    position:relative;
    z-index:2;
    width:100%;
    padding:64px 0;
    max-width:820px;
  }

  .cat-title{
    font-size:32px;
    font-weight:800;
    line-height:1.15;
    margin-top:18px;
  }
  @media (min-width:768px){ .cat-title{font-size:42px;} }

  .cat-sub{
    margin-top:16px;
    font-size:16px;
    color:var(--muted);
    max-width:30ch;
  }
  @media (min-width:768px){ .cat-sub{font-size:18px;max-width:34ch;} }

  .cat-hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px;}

  .micro-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
  .micro-tags li{
    display:inline-flex;
    align-items:center;
    height:30px;
    padding:0 12px;
    border-radius:var(--r-chip);
    border:1px solid var(--line-2);
    background:rgba(20,23,28,.72);
    font-size:13px;
    color:var(--muted);
    font-variant-numeric:tabular-nums;
  }

  .breadcrumb{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:13px;
    color:var(--muted);
    margin-bottom:18px;
    flex-wrap:wrap;
  }
  .breadcrumb a{color:var(--muted);transition:color var(--dur) var(--ease);}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:var(--line-2);}
  .breadcrumb .current{color:var(--text);}

  /* 横向轨道 */
  .rail-wrap{position:relative;}

  .rail{
    display:flex;
    gap:20px;
    overflow-x:auto;
    scroll-snap-type:x mandatory;
    padding:4px 4px 18px;
    scrollbar-width:thin;
    scrollbar-color:var(--line-2) transparent;
  }
  .rail::-webkit-scrollbar{height:6px;}
  .rail::-webkit-scrollbar-track{background:transparent;}
  .rail::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:999px;}

  .rail-card{
    position:relative;
    flex:0 0 240px;
    width:240px;
    scroll-snap-align:start;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
    background:var(--surface);
    transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  }
  .rail-card:hover{
    transform:translateY(-4px);
    border-color:rgba(34,224,161,.4);
    box-shadow:var(--glow);
  }

  .rail-thumb{
    position:relative;
    aspect-ratio:2/3;
    overflow:hidden;
    background:var(--surface);
  }
  .rail-thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform 400ms var(--ease);
  }
  .rail-card:hover .rail-thumb img{transform:scale(1.04);}

  .rail-meta{
    position:absolute;
    left:0;
    right:0;
    bottom:0;
    padding:16px 14px;
    background:linear-gradient(to top,rgba(8,9,11,.96) 0%,rgba(8,9,11,.6) 62%,rgba(8,9,11,0) 100%);
  }
  .rail-meta h3{font-size:16px;font-weight:700;line-height:1.35;}
  .rail-meta p{margin-top:6px;font-size:13px;color:var(--muted);}

  .rail-arrow{
    position:absolute;
    top:50%;
    transform:translateY(-50%);
    z-index:3;
    width:36px;
    height:36px;
    border-radius:999px;
    border:1px solid var(--line-2);
    background:rgba(11,13,16,.86);
    color:var(--text);
    display:grid;
    place-items:center;
    cursor:pointer;
    transition:border-color var(--dur) var(--ease), color var(--dur) var(--ease);
  }
  .rail-arrow:hover{border-color:var(--brand);color:var(--brand);}
  .rail-arrow.prev{left:-14px;}
  .rail-arrow.next{right:-14px;}
  @media (max-width:767px){ .rail-arrow{display:none;} }

  /* 数据块 */
  .stat-grid{display:grid;gap:20px;grid-template-columns:1fr;}
  @media (min-width:520px){ .stat-grid{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){ .stat-grid{grid-template-columns:repeat(4,1fr);} }

  .stat-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:24px;
    transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
  }
  .stat-card:hover{transform:translateY(-4px);border-color:rgba(34,224,161,.4);}

  .stat-num{
    font-size:30px;
    font-weight:800;
    color:var(--brand);
    font-variant-numeric:tabular-nums;
    letter-spacing:-.02em;
  }
  .stat-label{margin-top:8px;font-size:16px;font-weight:600;}
  .stat-text{margin-top:8px;font-size:14px;color:var(--muted);}

  /* 步骤卡 */
  .step-grid{display:grid;gap:20px;grid-template-columns:1fr;}
  @media (min-width:768px){ .step-grid{grid-template-columns:repeat(2,1fr);} }

  .step-card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-panel);
    padding:28px;
    transition:transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  }
  .step-card:hover{
    transform:translateY(-4px);
    border-color:rgba(34,224,161,.4);
    box-shadow:var(--glow);
  }

  .step-num{
    display:block;
    font-size:44px;
    font-weight:800;
    line-height:1;
    color:rgba(34,224,161,.22);
    -webkit-text-stroke:1.5px var(--brand);
    font-variant-numeric:tabular-nums;
    letter-spacing:-.03em;
  }

  .step-card h3{margin-top:18px;font-size:20px;}
  .step-card p{margin-top:12px;font-size:15px;color:var(--muted);}

  /* 准备清单 + 配图 */
  .prepare-grid{display:grid;gap:32px;grid-template-columns:1fr;align-items:center;}
  @media (min-width:1024px){ .prepare-grid{grid-template-columns:1.15fr .85fr;gap:48px;} }

  .check-list{display:flex;flex-direction:column;}
  .check-list li{
    display:flex;
    gap:16px;
    padding:18px 0;
    border-bottom:1px solid var(--line);
  }
  .check-list li:first-child{padding-top:4px;}
  .check-list li:last-child{border-bottom:0;padding-bottom:4px;}

  .check-dot{
    flex:0 0 12px;
    width:12px;
    height:12px;
    margin-top:9px;
    border-radius:4px;
    border:2px solid var(--brand);
    background:rgba(34,224,161,.16);
  }

  .check-list h3{font-size:16px;font-weight:600;}
  .check-list p{margin-top:6px;font-size:14px;color:var(--muted);}

  .prepare-figure{
    position:relative;
    border:1px solid var(--line);
    border-radius:var(--r-panel);
    overflow:hidden;
    background:var(--surface);
  }
  .prepare-figure img{width:100%;aspect-ratio:4/5;object-fit:cover;}

  /* FAQ */
  .faq-list{display:grid;gap:12px;max-width:920px;}

  .faq-item{
    border:1px solid var(--line);
    border-radius:var(--r-card);
    background:var(--surface-3);
    overflow:hidden;
    transition:border-color var(--dur) var(--ease);
  }
  .faq-item:hover{border-color:var(--line-2);}
  .faq-item.is-open{border-color:rgba(34,224,161,.4);}

  .faq-q{
    width:100%;
    min-height:56px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:16px 20px;
    background:transparent;
    border:0;
    text-align:left;
    font-size:16px;
    font-weight:600;
    cursor:pointer;
    transition:color var(--dur) var(--ease);
  }
  .faq-item.is-open .faq-q{color:var(--brand);}

  .faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px;}
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    background:var(--brand);
    border-radius:2px;
  }
  .faq-icon::before{left:0;right:0;top:8px;height:2px;}
  .faq-icon::after{top:0;bottom:0;left:8px;width:2px;transition:transform var(--dur) var(--ease);}
  .faq-item.is-open .faq-icon::after{transform:scaleY(0);}

  .faq-a{
    display:grid;
    grid-template-rows:0fr;
    transition:grid-template-rows var(--dur) var(--ease);
  }
  .faq-item.is-open .faq-a{grid-template-rows:1fr;}
  .faq-a > div{overflow:hidden;}
  .faq-a p{padding:0 20px 20px;font-size:15px;color:var(--muted);}

  /* CTA 面板 */
  .cta-panel{
    position:relative;
    overflow:hidden;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:32px;
    flex-wrap:wrap;
    min-height:220px;
    padding:48px 40px;
    border:1px solid var(--line);
    border-radius:var(--r-panel);
    background-color:var(--ink);
  }
  .cta-bg{
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-3.webp');
    background-size:cover;
    background-position:center;
  }
  .cta-panel::before{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(90deg,rgba(11,13,16,.95) 0%,rgba(11,13,16,.74) 100%);
  }
  .cta-panel::after{
    content:"";
    position:absolute;
    inset:0;
    background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
    background-size:36px 36px;
    opacity:.6;
  }
  .cta-panel > *{position:relative;z-index:2;}

  .cta-title{font-size:26px;font-weight:800;max-width:22ch;}
  @media (min-width:768px){ .cta-title{font-size:30px;} }
  .cta-text{margin-top:12px;font-size:15px;color:var(--muted);max-width:38ch;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:16px;}

  /* 页脚 */
  .site-footer{
    background:#08090B;
    border-top:1px solid var(--line);
    padding:64px 0 28px;
  }

  .footer-grid{display:grid;gap:36px;grid-template-columns:1fr;}
  @media (min-width:768px){ .footer-grid{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;} }

  .footer-brand .brand-text{font-size:19px;}
  .footer-brand p{margin-top:14px;font-size:14px;color:var(--muted);max-width:34ch;}

  .footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}

  .chip{
    display:inline-flex;
    align-items:center;
    height:24px;
    padding:0 10px;
    border-radius:var(--r-chip);
    font-size:13px;
    color:var(--brand);
    background:rgba(34,224,161,.12);
    border:1px solid rgba(34,224,161,.24);
  }

  .footer-title{font-size:15px;font-weight:700;margin-bottom:16px;}

  .footer-links{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--muted);}
  .footer-links a{color:var(--muted);transition:color var(--dur) var(--ease);}
  .footer-links a:hover{color:var(--brand);}

  .sub-form{display:flex;flex-direction:column;gap:10px;}
  .sub-input{
    height:48px;
    padding:0 14px;
    border-radius:var(--r-btn);
    border:1px solid #2A2F37;
    background:var(--surface-3);
    color:var(--text);
    font-size:14px;
    transition:border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  }
  .sub-input::placeholder{color:var(--muted-2);}
  .sub-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(34,224,161,.12);}
  .sub-input.is-error{border-color:var(--coral);}
  .sub-note{font-size:13px;color:var(--muted);}
  .sub-note.is-error{color:var(--coral);}

  .footer-bottom{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    margin-top:48px;
    padding-top:22px;
    border-top:1px solid var(--line);
    font-size:13px;
    color:var(--muted);
  }
  .footer-bottom a{color:var(--muted);transition:color var(--dur) var(--ease);}
  .footer-bottom a:hover{color:var(--brand);}

  /* 回到顶部 */
  .to-top{
    position:fixed;
    right:20px;
    bottom:20px;
    z-index:50;
    width:48px;
    height:48px;
    display:grid;
    place-items:center;
    border:1px solid rgba(34,224,161,.5);
    border-radius:14px;
    background:rgba(11,13,16,.9);
    color:var(--brand);
    font-size:18px;
    cursor:pointer;
    opacity:0;
    visibility:hidden;
    transform:translateY(8px);
    transition:opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease), background var(--dur) var(--ease);
  }
  .to-top.is-visible{opacity:1;visibility:visible;transform:none;}
  .to-top:hover{background:rgba(34,224,161,.16);}

  @media (max-width:1023px){
    .nav-panel{display:none;}
    .header-actions > .btn{display:none;}
    .burger{display:flex;}
    .header-inner{justify-content:space-between;}
  }

  @media (min-width:1024px){
    .drawer{display:none;}
  }

  @media (max-width:519px){
    body{font-size:16px;line-height:1.75;}
    .cat-hero-inner{padding:52px 0;}
    .cat-title{font-size:30px;}
    .rail-card{flex:0 0 200px;width:200px;}
    .step-card{padding:22px;}
    .cta-panel{padding:32px 24px;}
  }

  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    *,*::before,*::after{
      animation-duration:.001ms !important;
      animation-iteration-count:1 !important;
      transition-duration:.001ms !important;
    }
    .hero-bg{animation:none;transform:none;}
    .rail-thumb img,
    .btn:hover,
    .rail-card:hover,
    .stat-card:hover,
    .step-card:hover{transform:none;}
  }

/* roulang page: category2 */
:root{
    --ink:#0B0D10;
    --surface:#14171C;
    --surface-2:#1B1F26;
    --line:#262B33;
    --line-2:#3A424C;
    --brand:#22E0A1;
    --coral:#FF6B4A;
    --violet:#8B7BFF;
    --paper:#F5F3EE;
    --text:#F2F4F1;
    --muted:#A8AEB6;
    --text-dark:#101316;
    --muted-dark:#4B5158;
    --r-panel:20px;
    --r-card:14px;
    --r-btn:12px;
    --r-chip:8px;
    --ease:cubic-bezier(.22,.61,.36,1);
    --dur:240ms;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{
    -webkit-text-size-adjust:100%;
    scroll-behavior:smooth;
    scroll-padding-top:96px;
  }
  body{
    margin:0;
    background:var(--ink);
    color:var(--text);
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",sans-serif;
    font-size:17px;
    line-height:1.8;
    font-variant-numeric:tabular-nums;
    overflow-x:hidden;
  }
  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;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  ::selection{background:rgba(34,224,161,.28);color:#fff;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

  .container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){ .container{padding:0 32px;} }
  @media (min-width:1280px){ .container{padding:0 48px;} }

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(11,13,16,.92);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand-mark{
    width:34px;height:34px;border-radius:10px;
    border:1.5px solid rgba(34,224,161,.85);
    background:rgba(34,224,161,.08);
    display:grid;place-items:center;
    box-shadow:0 0 18px -6px rgba(34,224,161,.6);
  }
  .brand-mark svg{width:17px;height:17px;fill:var(--brand);}
  .brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
  .brand-text em{font-style:normal;color:var(--brand);}

  .nav-panel{
    display:flex;align-items:center;gap:6px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:16px;
    padding:6px;
  }
  .nav-item{
    position:relative;
    display:inline-flex;align-items:center;
    height:40px;padding:0 14px;
    border-radius:12px;
    font-size:15px;color:var(--muted);
    white-space:nowrap;
    transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
  }
  .nav-item:hover{background:var(--surface-2);color:var(--brand);}
  .nav-item.is-active{background:rgba(34,224,161,.12);color:var(--brand);font-weight:600;}
  .nav-item.is-active::before{
    content:"";position:absolute;top:-5px;left:14px;right:14px;height:2px;
    border-radius:2px;background:var(--brand);
  }
  .header-cta{flex:0 0 auto;margin-left:24px;}

  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:12px;
    border:1px solid var(--line-2);
    flex-direction:column;align-items:center;justify-content:center;gap:5px;
    transition:border-color var(--dur) var(--ease);
  }
  .nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:all var(--dur) var(--ease);}
  .nav-toggle:hover{border-color:var(--brand);}
  .nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle.is-open span:nth-child(2){opacity:0;}
  .nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

  @media (max-width:1023px){
    .nav-panel{display:none;}
    .header-cta{display:none;}
    .nav-toggle{display:flex;}
  }

  .mobile-drawer{
    position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;
    background:var(--ink);
    padding:24px 20px 40px;
    display:none;flex-direction:column;gap:20px;
    overflow-y:auto;
  }
  .mobile-drawer.is-open{display:flex;animation:drawerIn 240ms var(--ease);}
  @keyframes drawerIn{from{opacity:0;transform:translateY(-12px);}to{opacity:1;transform:none;}}
  .drawer-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
  .drawer-card{
    display:flex;align-items:center;min-height:64px;padding:14px;
    border-radius:14px;background:var(--surface);border:1px solid var(--line);
    font-size:15px;font-weight:600;
    transition:all var(--dur) var(--ease);
  }
  .drawer-card:hover,.drawer-card.is-active{border-color:var(--brand);color:var(--brand);}
  .drawer-cta{margin-top:auto;padding-bottom:env(safe-area-inset-bottom,0);}

  /* ---------- 按钮 / 链接 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    min-height:46px;padding:0 22px;
    border-radius:var(--r-btn);
    font-size:15px;font-weight:600;
    border:1px solid transparent;
    transition:all var(--dur) var(--ease);
  }
  .btn-primary{background:var(--brand);color:#06231A;}
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 12px 30px -10px rgba(34,224,161,.5);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{border-color:var(--line-2);color:var(--text);background:transparent;}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
  .btn-block{width:100%;}

  .ghost-link{display:inline-flex;align-items:center;gap:8px;color:var(--brand);font-size:15px;font-weight:600;}
  .ghost-link svg{width:16px;height:16px;transition:transform var(--dur) var(--ease);}
  .ghost-link:hover svg{transform:translateX(4px);}

  /* ---------- 首屏标题带 ---------- */
  .page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:var(--surface);}
  .page-hero-bg{
    position:absolute;inset:0;
    background-image:url("/assets/images/backpic/back-2.png");
    background-size:cover;background-position:center 40%;
    opacity:.42;
  }
  .page-hero-bg::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(11,13,16,.96) 0%,rgba(11,13,16,.74) 52%,rgba(11,13,16,.9) 100%);
  }
  .page-hero-inner{position:relative;z-index:1;padding:44px 0 56px;}
  @media (min-width:768px){ .page-hero-inner{padding:56px 0 68px;} }

  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13px;color:var(--muted);margin-bottom:20px;
  }
  .breadcrumb a{transition:color var(--dur) var(--ease);}
  .breadcrumb a:hover{color:var(--brand);}
  .crumb-sep{color:var(--line-2);}
  .crumb-current{color:var(--text);}

  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.28em;color:var(--brand);
    margin-bottom:16px;
  }
  .eyebrow::before{content:"";width:1px;height:14px;background:var(--brand);}

  .page-hero h1{
    font-size:clamp(30px,4.6vw,48px);
    font-weight:800;line-height:1.15;letter-spacing:-.02em;
    max-width:14em;
  }
  .hero-sub{margin-top:16px;font-size:17px;line-height:1.75;color:var(--muted);max-width:660px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}

  .tag{
    display:inline-flex;align-items:center;height:28px;padding:0 12px;
    border-radius:var(--r-chip);font-size:12.5px;
    color:var(--muted);border:1px solid var(--line);background:rgba(20,23,28,.72);
  }
  .tag--brand{color:var(--brand);border-color:rgba(34,224,161,.32);background:rgba(34,224,161,.1);}
  .tag--violet{color:#B7ADFF;border-color:rgba(139,123,255,.35);background:rgba(139,123,255,.1);}
  .tag--dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--coral);margin-right:8px;}

  /* ---------- 主体布局 ---------- */
  .guide-body{padding:56px 0 88px;}
  @media (min-width:1024px){ .guide-body{padding:72px 0 112px;} }

  .guide-layout{display:grid;grid-template-columns:1fr;gap:32px;}
  @media (min-width:1024px){ .guide-layout{grid-template-columns:240px 1fr;gap:64px;} }

  .toc-rail{align-self:start;}
  @media (min-width:1024px){ .toc-rail{position:sticky;top:96px;} }

  .toc-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-panel);padding:20px;}
  .toc-title{font-size:12px;letter-spacing:.24em;color:var(--muted);margin-bottom:14px;}
  .toc-list{display:flex;flex-direction:column;gap:4px;}
  .toc-link{
    display:block;padding:10px 12px;border-radius:12px;
    font-size:14px;color:var(--muted);
    border-left:2px solid transparent;
    transition:all var(--dur) var(--ease);
  }
  .toc-link:hover{background:var(--surface-2);color:var(--text);}
  .toc-link.is-active{color:var(--brand);background:rgba(34,224,161,.08);border-left-color:var(--brand);}

  @media (max-width:1023px){
    .toc-panel{background:transparent;border:0;padding:0;}
    .toc-title{display:none;}
    .toc-list{
      flex-direction:row;gap:8px;
      overflow-x:auto;
      padding-bottom:10px;
      scrollbar-width:thin;
    }
    .toc-link{white-space:nowrap;border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:13px;}
    .toc-link.is-active{border-color:var(--brand);}
  }

  /* ---------- 速览数据条 ---------- */
  .fact-bar{display:grid;gap:16px;grid-template-columns:repeat(2,1fr);margin-bottom:44px;}
  @media (min-width:768px){ .fact-bar{grid-template-columns:repeat(4,1fr);} }
  .fact-item{
    background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-card);padding:20px;
    transition:all var(--dur) var(--ease);
  }
  .fact-item:hover{border-color:rgba(34,224,161,.4);transform:translateY(-4px);box-shadow:var(--glow);}
  .fact-num{font-size:28px;font-weight:800;color:var(--brand);letter-spacing:-.02em;line-height:1.2;}
  .fact-num small{font-size:13px;font-weight:600;color:var(--muted);margin-left:4px;}
  .fact-label{font-size:14px;color:var(--muted);margin-top:6px;}

  /* ---------- 图文章节 ---------- */
  .guide-section{padding:44px 0;border-bottom:1px solid var(--line);}
  .guide-section:last-child{border-bottom:0;padding-bottom:0;}

  .section-label{display:flex;align-items:center;gap:14px;margin-bottom:24px;}
  .section-num{
    flex:0 0 auto;
    font-size:14px;font-weight:800;color:var(--brand);
    letter-spacing:.06em;
    border:1px solid rgba(34,224,161,.35);
    background:rgba(34,224,161,.08);
    border-radius:8px;padding:3px 10px;line-height:1.5;
  }
  .section-title{font-size:22px;font-weight:700;letter-spacing:-.01em;line-height:1.4;}
  @media (min-width:768px){ .section-title{font-size:26px;} }

  .guide-row{display:grid;gap:26px;align-items:center;}
  @media (min-width:768px){ .guide-row{grid-template-columns:1fr 1fr;gap:44px;} }
  @media (min-width:768px){
    .guide-row.reverse .guide-media{order:2;}
    .guide-row.reverse .guide-text{order:1;}
  }

  .guide-media{
    position:relative;overflow:hidden;
    border-radius:var(--r-card);
    border:1px solid var(--line);
    background:var(--surface);
    aspect-ratio:16/10;
  }
  .guide-media img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
  .guide-row:hover .guide-media img{transform:scale(1.04);}

  .guide-text h3{font-size:17px;font-weight:700;color:var(--text);margin-bottom:10px;}
  .guide-text p{font-size:16px;line-height:1.85;color:var(--muted);margin-bottom:14px;}
  .guide-text p:last-child{margin-bottom:0;}

  .tick-list{display:flex;flex-direction:column;gap:10px;margin-top:16px;}
  .tick-list li{position:relative;padding-left:22px;font-size:15px;line-height:1.75;color:var(--muted);}
  .tick-list li::before{
    content:"";position:absolute;left:0;top:11px;
    width:7px;height:7px;border-radius:2px;background:var(--brand);
  }

  .note-box{
    margin-top:18px;padding:16px 18px;
    border-radius:12px;
    background:var(--surface);
    border:1px solid var(--line);
    border-left:3px solid var(--brand);
    font-size:14.5px;line-height:1.8;color:var(--muted);
  }

  .inline-links{display:flex;flex-wrap:wrap;gap:20px;margin-top:22px;}

  /* ---------- FAQ ---------- */
  .faq-section{
    padding:80px 0;
    background:var(--surface);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  @media (min-width:1024px){ .faq-section{padding:100px 0;} }

  .section-head{
    display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
    gap:16px;margin-bottom:36px;
  }
  .section-head h2{font-size:30px;font-weight:800;letter-spacing:-.02em;line-height:1.25;}
  @media (min-width:768px){ .section-head h2{font-size:34px;} }
  .section-head p{font-size:15px;color:var(--muted);margin-top:10px;max-width:560px;}

  .faq-list{max-width:920px;}
  .faq-item{
    border:1px solid var(--line);
    border-radius:var(--r-card);
    background:var(--ink);
    margin-bottom:12px;
    overflow:hidden;
    transition:border-color var(--dur) var(--ease);
  }
  .faq-item[open]{border-color:rgba(34,224,161,.42);}
  .faq-q{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:56px;padding:14px 20px;
    font-size:16px;font-weight:600;
    cursor:pointer;list-style:none;
  }
  .faq-q::-webkit-details-marker{display:none;}
  .faq-icon{
    flex:0 0 auto;width:26px;height:26px;border-radius:8px;
    border:1px solid var(--line-2);
    display:grid;place-items:center;position:relative;
    transition:all var(--dur) var(--ease);
  }
  .faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;}
  .faq-icon::before{width:12px;height:2px;}
  .faq-icon::after{width:2px;height:12px;transition:transform var(--dur) var(--ease);}
  .faq-item[open] .faq-icon::after{transform:scaleY(0);}
  .faq-item[open] .faq-icon{border-color:var(--brand);background:rgba(34,224,161,.12);}
  .faq-a{padding:0 20px 20px;font-size:15px;line-height:1.85;color:var(--muted);}
  .faq-a strong{color:var(--brand);font-weight:600;}

  /* ---------- CTA ---------- */
  .cta-band{position:relative;overflow:hidden;background:var(--surface);}
  .cta-band::before{
    content:"";position:absolute;inset:0;
    background-image:url("/assets/images/backpic/back-3.webp");
    background-size:cover;background-position:center;
    opacity:.2;
  }
  .cta-band::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(90deg,rgba(11,13,16,.97),rgba(11,13,16,.72));
  }
  .cta-inner{
    position:relative;z-index:1;
    padding:64px 0;
    display:flex;flex-direction:column;gap:28px;
    align-items:flex-start;
  }
  @media (min-width:900px){
    .cta-inner{
      flex-direction:row;align-items:center;justify-content:space-between;
      padding:88px 0;gap:48px;
    }
  }
  .cta-inner h2{font-size:28px;font-weight:800;letter-spacing:-.02em;line-height:1.25;}
  @media (min-width:768px){ .cta-inner h2{font-size:34px;} }
  .cta-inner p{font-size:16px;color:var(--muted);margin-top:12px;max-width:540px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#08090B;border-top:1px solid var(--line);padding-top:72px;color:var(--muted);}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:40px;padding-bottom:56px;}
  @media (min-width:640px){ .footer-grid{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:48px;} }

  .footer-brand .brand-text{font-size:18px;font-weight:800;color:var(--text);display:inline-block;margin-bottom:12px;}
  .footer-brand .brand-text em{font-style:normal;color:var(--brand);}
  .footer-brand p{font-size:14px;line-height:1.8;max-width:330px;}
  .footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
  .chip{
    display:inline-flex;align-items:center;height:26px;padding:0 10px;
    border-radius:var(--r-chip);font-size:12px;
    background:rgba(34,224,161,.1);color:var(--brand);
    border:1px solid rgba(34,224,161,.18);
  }

  .footer-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.04em;}
  .footer-links{display:flex;flex-direction:column;gap:12px;font-size:14px;}
  .footer-links a{transition:color var(--dur) var(--ease);}
  .footer-links a:hover{color:var(--brand);}

  .sub-form{display:flex;flex-direction:column;gap:12px;}
  .sub-input{
    width:100%;height:48px;padding:0 16px;
    border-radius:12px;
    background:#101316;border:1px solid #2A2F37;
    color:var(--text);font-size:14px;
    transition:all var(--dur) var(--ease);
  }
  .sub-input::placeholder{color:#6B7280;}
  .sub-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(34,224,161,.12);}
  .sub-input.is-error{border-color:var(--coral);}
  .sub-note{font-size:12px;color:var(--muted);line-height:1.7;}
  .sub-note.is-error{color:var(--coral);}

  .footer-bottom{
    border-top:1px solid var(--line);
    padding:22px 0;
    display:flex;flex-wrap:wrap;gap:12px 24px;
    align-items:center;justify-content:space-between;
    font-size:13px;color:var(--muted);
  }
  .footer-bottom a{transition:color var(--dur) var(--ease);}
  .footer-bottom a:hover{color:var(--brand);}

  #backTop{
    position:fixed;right:20px;bottom:20px;z-index:70;
    width:48px;height:48px;border-radius:14px;
    border:1px solid rgba(34,224,161,.5);
    background:rgba(11,13,16,.9);
    color:var(--brand);
    display:grid;place-items:center;
    opacity:0;visibility:hidden;
    transition:all var(--dur) var(--ease);
  }
  #backTop.is-show{opacity:1;visibility:visible;}
  #backTop:hover{background:rgba(34,224,161,.14);transform:translateY(-2px);}

  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important;}
    .guide-row:hover .guide-media img{transform:none;}
  }

/* roulang page: category3 */
:root {
    --ink: #0B0D10;
    --surface: #14171C;
    --surface-2: #1B1F26;
    --line: #262B33;
    --line-2: #3A424C;
    --brand: #22E0A1;
    --coral: #FF6B4A;
    --violet: #8B7BFF;
    --paper: #F5F3EE;
    --text: #F2F4F1;
    --text-2: #A8AEB6;
    --text-dark: #101316;
    --text-dark-2: #4B5158;
    --r-panel: 20px;
    --r-card: 14px;
    --r-chip: 8px;
    --r-btn: 12px;
    --ease: cubic-bezier(.22,.61,.36,1);
    --dur: 240ms;
    --shadow-glow: 0 12px 30px -10px rgba(34,224,161,.28);
    --shadow-panel: 0 12px 32px -16px rgba(16,19,22,.18);
    --nav-h: 72px;
  }

  * { box-sizing: border-box; }

  html { scroll-behavior: smooth; }

  body {
    margin: 0;
    background: var(--ink);
    color: var(--text);
    font-family: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
    font-size: 16.5px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
  }

  img { max-width: 100%; display: block; }
  a { color: inherit; text-decoration: none; }
  button, input { font: inherit; color: inherit; }
  h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
  ul { padding: 0; list-style: none; }

  :focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 2px;
    border-radius: 6px;
  }

  .container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
  }

  @media (min-width: 768px) {
    .container { padding-left: 32px; padding-right: 32px; }
  }
  @media (min-width: 1024px) {
    .container { padding-left: 48px; padding-right: 48px; }
  }

  .num { font-variant-numeric: tabular-nums; }

  /* ---------- 顶部导航 ---------- */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    height: var(--nav-h);
    background: rgba(11, 13, 16, .88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
  }

  .header-inner {
    height: var(--nav-h);
    display: flex;
    align-items: center;
    gap: 20px;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    border: 1.5px solid var(--brand);
    display: grid;
    place-items: center;
    background: rgba(34, 224, 161, .08);
    flex-shrink: 0;
  }

  .brand-mark i {
    font-size: 14px;
    color: var(--brand);
    transform: translateX(1px);
  }

  .brand-text {
    font-size: 17px;
    font-weight: 800;
    letter-spacing: -0.01em;
    line-height: 1.1;
    white-space: nowrap;
  }

  .brand-text em {
    font-style: normal;
    color: var(--brand);
  }

  .nav-panel {
    display: none;
    align-items: center;
    gap: 4px;
    margin-left: 12px;
    padding: 6px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 16px;
  }

  .nav-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 40px;
    padding: 0 14px;
    border-radius: var(--r-btn);
    font-size: 15px;
    color: var(--text-2);
    position: relative;
    transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
    white-space: nowrap;
  }

  .nav-item i { font-size: 13px; }

  .nav-item:hover {
    background: var(--surface-2);
    color: var(--brand);
  }

  .nav-item.is-active {
    background: rgba(34, 224, 161, .12);
    color: var(--brand);
  }

  .nav-item.is-active::before {
    content: "";
    position: absolute;
    top: -6px;
    left: 14px;
    right: 14px;
    height: 2px;
    border-radius: 2px;
    background: var(--brand);
  }

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

  .burger {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-btn);
    color: var(--text);
    cursor: pointer;
    transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
  }

  .burger:hover { border-color: var(--brand); color: var(--brand); }

  @media (min-width: 1024px) {
    .nav-panel { display: inline-flex; }
    .burger { display: none; }
  }

  /* 移动抽屉 */
  .drawer {
    position: fixed;
    inset: 0;
    z-index: 90;
    background: var(--ink);
    padding: 24px 20px calc(24px + env(safe-area-inset-bottom));
    display: flex;
    flex-direction: column;
    gap: 20px;
    opacity: 0;
    transform: translateY(-12px);
    pointer-events: none;
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  }

  .drawer.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .drawer-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .drawer-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 18px 16px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-card);
    font-size: 15px;
    color: var(--text-2);
    transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
  }

  .drawer-card i { color: var(--brand); font-size: 16px; }

  .drawer-card:hover { border-color: rgba(34,224,161,.5); color: var(--brand); }

  .drawer-card.is-active {
    background: rgba(34, 224, 161, .12);
    border-color: rgba(34,224,161,.5);
    color: var(--brand);
  }

  .drawer-foot { margin-top: auto; display: grid; gap: 12px; }

  /* ---------- 按钮 ---------- */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 46px;
    padding: 0 22px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--r-btn);
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform var(--dur) var(--ease), background var(--dur) var(--ease),
                border-color var(--dur) var(--ease), color var(--dur) var(--ease),
                box-shadow var(--dur) var(--ease), filter var(--dur) var(--ease);
  }

  .btn-primary {
    background: var(--brand);
    color: #06231A;
  }

  .btn-primary:hover {
    filter: brightness(1.08);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
  }

  .btn-primary:active { transform: translateY(0); }

  .btn-ghost {
    background: transparent;
    border-color: var(--line-2);
    color: var(--text);
  }

  .btn-ghost:hover {
    border-color: var(--brand);
    color: var(--brand);
    transform: translateY(-2px);
  }

  .btn-block { width: 100%; }

  .link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    color: var(--text-2);
    transition: color var(--dur) var(--ease);
  }

  .link-arrow i { transition: transform var(--dur) var(--ease); }
  .link-arrow:hover { color: var(--brand); }
  .link-arrow:hover i { transform: translateX(4px); }

  /* ---------- 徽章 / 标签 ---------- */
  .chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 26px;
    padding: 0 10px;
    font-size: 13px;
    border-radius: var(--r-chip);
    border: 1px solid var(--line);
    color: var(--text-2);
    background: rgba(255,255,255,.02);
  }

  .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 24px;
    padding: 0 10px;
    font-size: 13px;
    border-radius: var(--r-chip);
    background: rgba(34, 224, 161, .12);
    color: var(--brand);
  }

  .badge-violet {
    background: rgba(139, 123, 255, .14);
    color: var(--violet);
  }

  .dot-coral {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 13px;
    color: var(--coral);
  }

  .dot-coral::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: var(--coral);
  }

  /* ---------- 小节标签 ---------- */
  .sec-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    letter-spacing: .3em;
    color: var(--brand);
    text-transform: uppercase;
  }

  .sec-label::before {
    content: "";
    width: 1px;
    height: 12px;
    background: var(--brand);
  }

  .sec-title {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin-top: 12px;
  }

  @media (min-width: 768px) {
    .sec-title { font-size: 34px; }
  }

  .sec-desc {
    color: var(--text-2);
    font-size: 15.5px;
    max-width: 62ch;
    margin-top: 10px;
  }

  /* ---------- 面包屑 ---------- */
  .crumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-2);
  }

  .crumb a:hover { color: var(--brand); }
  .crumb .sep { color: var(--line-2); }
  .crumb .current { color: var(--text); }

  /* ---------- 标题带 ---------- */
  .page-head {
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
  }

  .page-head-bg {
    position: absolute;
    inset: 0;
    background-image: url("/assets/images/backpic/back-2.png");
    background-size: cover;
    background-position: center;
    opacity: .55;
    animation: kenburns 20s ease-out forwards;
  }

  .page-head-mask {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(11,13,16,.94) 0%, rgba(11,13,16,.62) 52%, rgba(11,13,16,.9) 100%);
  }

  .page-head-inner {
    position: relative;
    z-index: 2;
    padding: 34px 0 40px;
  }

  @media (min-width: 768px) {
    .page-head-inner { padding: 46px 0 54px; }
  }

  .page-h1 {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-top: 18px;
  }

  @media (min-width: 768px) {
    .page-h1 { font-size: 46px; }
  }

  .page-sub {
    margin-top: 14px;
    color: var(--text-2);
    font-size: 16.5px;
    max-width: 34ch;
  }

  @media (min-width: 768px) {
    .page-sub { max-width: 46ch; }
  }

  .head-facts {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
  }

  /* ---------- 通用面板 ---------- */
  .panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-panel);
  }

  .section { padding: 56px 0; }
  @media (min-width: 768px) {
    .section { padding: 88px 0; }
  }

  /* ---------- 概览信息条 ---------- */
  .facts-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  @media (min-width: 900px) {
    .facts-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  }

  .fact-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-card);
    padding: 20px;
    transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  }

  .fact-card:hover {
    transform: translateY(-4px);
    border-color: rgba(34,224,161,.4);
    box-shadow: var(--shadow-glow);
  }

  .fact-num {
    font-size: 30px;
    font-weight: 800;
    color: var(--brand);
    letter-spacing: -0.02em;
    line-height: 1.1;
  }

  .fact-label {
    margin-top: 8px;
    font-size: 14px;
    color: var(--text-2);
  }

  /* ---------- 时间轴 ---------- */
  .timeline {
    position: relative;
    margin-top: 36px;
    padding-left: 28px;
  }

  .timeline::before {
    content: "";
    position: absolute;
    left: 5px;
    top: 6px;
    bottom: 6px;
    width: 1px;
    background: linear-gradient(180deg, rgba(34,224,161,.85), rgba(34,224,161,.12));
  }

  .tl-item {
    position: relative;
    padding: 0 0 30px 0;
  }

  .tl-item:last-child { padding-bottom: 0; }

  .tl-item::before {
    content: "";
    position: absolute;
    left: -28px;
    top: 8px;
    width: 11px;
    height: 11px;
    border-radius: 999px;
    background: var(--ink);
    border: 2px solid var(--brand);
    box-shadow: 0 0 0 4px rgba(34,224,161,.12);
  }

  .tl-head {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
  }

  .tl-date {
    font-size: 13px;
    color: var(--text-2);
    letter-spacing: .04em;
  }

  .tl-title {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.45;
  }

  .tl-text {
    margin-top: 8px;
    color: var(--text-2);
    font-size: 15.5px;
    max-width: 70ch;
  }

  .tl-card {
    margin-top: 14px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-card);
    padding: 16px 18px;
    transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
  }

  .tl-card:hover {
    border-color: rgba(34,224,161,.4);
    transform: translateY(-3px);
  }

  .tl-card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
  }

  .tl-card-text {
    margin-top: 6px;
    font-size: 14.5px;
    color: var(--text-2);
  }

  /* ---------- FAQ ---------- */
  .faq-list {
    display: grid;
    gap: 14px;
    margin-top: 32px;
  }

  .faq-item {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-card);
    overflow: hidden;
    transition: border-color var(--dur) var(--ease);
  }

  .faq-item:hover { border-color: rgba(34,224,161,.35); }

  .faq-item.is-open {
    border-color: rgba(34,224,161,.55);
    background: var(--surface-2);
  }

  .faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 58px;
    padding: 16px 18px;
    background: transparent;
    border: 0;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    cursor: pointer;
  }

  .faq-icon {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    border-radius: 999px;
    border: 1px solid var(--line-2);
    color: var(--brand);
    font-size: 13px;
    transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
  }

  .faq-item.is-open .faq-icon {
    transform: rotate(180deg);
    border-color: var(--brand);
  }

  .faq-a {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 320ms var(--ease);
  }

  .faq-item.is-open .faq-a { grid-template-rows: 1fr; }

  .faq-a-inner { overflow: hidden; }

  .faq-a-inner p {
    padding: 0 18px 18px;
    color: var(--text-2);
    font-size: 15.5px;
    max-width: 78ch;
  }

  /* ---------- 分类入口卡 ---------- */
  .cat-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 34px;
  }

  @media (min-width: 768px) {
    .cat-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  }

  .cat-card {
    display: block;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-panel);
    overflow: hidden;
    transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  }

  .cat-card:hover {
    transform: translateY(-4px);
    border-color: rgba(34,224,161,.4);
    box-shadow: var(--shadow-glow);
  }

  .cat-thumb {
    aspect-ratio: 16 / 10;
    background: var(--surface-2);
    overflow: hidden;
  }

  .cat-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 420ms var(--ease);
  }

  .cat-card:hover .cat-thumb img { transform: scale(1.04); }

  .cat-body { padding: 20px; }

  .cat-name {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
  }

  .cat-text {
    margin-top: 8px;
    font-size: 14.5px;
    color: var(--text-2);
  }

  .cat-more {
    margin-top: 16px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--brand);
  }

  .cat-card:hover .cat-more i { transform: translateX(4px); }
  .cat-more i { transition: transform var(--dur) var(--ease); }

  /* ---------- CTA ---------- */
  .cta-panel {
    position: relative;
    overflow: hidden;
    border-radius: var(--r-panel);
    border: 1px solid var(--line);
    background: var(--surface);
    padding: 36px 24px;
  }

  @media (min-width: 768px) {
    .cta-panel { padding: 46px 48px; }
  }

  .cta-bg {
    position: absolute;
    inset: 0;
    background-image: url("/assets/images/backpic/back-3.webp");
    background-size: cover;
    background-position: center;
    opacity: .38;
  }

  .cta-mask {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(11,13,16,.95) 0%, rgba(11,13,16,.72) 55%, rgba(11,13,16,.9) 100%);
  }

  .cta-inner {
    position: relative;
    z-index: 2;
    display: grid;
    gap: 24px;
  }

  @media (min-width: 900px) {
    .cta-inner {
      grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
      align-items: center;
      gap: 40px;
    }
  }

  .cta-title {
    font-size: 23px;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.3;
  }

  @media (min-width: 768px) {
    .cta-title { font-size: 30px; }
  }

  .cta-text {
    margin-top: 12px;
    color: var(--text-2);
    font-size: 16px;
    max-width: 52ch;
  }

  .cta-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }

  /* ---------- 页脚 ---------- */
  .site-footer {
    background: #08090B;
    border-top: 1px solid var(--line);
    padding: 56px 0 28px;
    margin-top: 8px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
  }

  @media (min-width: 700px) {
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  }

  @media (min-width: 1024px) {
    .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; }
  }

  .footer-brand .brand-text { font-size: 18px; }

  .footer-brand p {
    margin-top: 14px;
    color: var(--text-2);
    font-size: 14.5px;
    max-width: 34ch;
  }

  .footer-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
  }

  .footer-title {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 14px;
  }

  .footer-links {
    display: grid;
    gap: 10px;
    font-size: 14.5px;
    color: var(--text-2);
  }

  .footer-links a:hover { color: var(--brand); }

  .sub-form { display: grid; gap: 10px; }

  .sub-input {
    height: 48px;
    padding: 0 14px;
    background: #101316;
    border: 1px solid #2A2F37;
    border-radius: var(--r-btn);
    color: var(--text);
    font-size: 15px;
    transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  }

  .sub-input::placeholder { color: #6B7280; }

  .sub-input:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(34,224,161,.12);
  }

  .sub-input.is-error {
    border-color: var(--coral);
    box-shadow: 0 0 0 3px rgba(255,107,74,.14);
  }

  .sub-note {
    font-size: 13px;
    color: var(--text-2);
  }

  .sub-note.is-error { color: var(--coral); }

  .footer-bottom {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-2);
  }

  .footer-bottom a:hover { color: var(--brand); }

  /* ---------- 回到顶部 ---------- */
  .to-top {
    position: fixed;
    right: 20px;
    bottom: 24px;
    z-index: 70;
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    border: 1px solid var(--brand);
    background: rgba(11,13,16,.86);
    color: var(--brand);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur) var(--ease);
  }

  .to-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .to-top:hover { background: rgba(34,224,161,.14); }

  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

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

@media (min-width: 1024px) {
      [data-desktop-cta] { display: inline-flex !important; }
    }