/* roulang page: index */
:root{
  --ink-900:#0B0714;
  --ink-800:#140E22;
  --ink-700:#1D1533;
  --line:rgba(255,255,255,.08);
  --brand-a:#7C3BFF;
  --brand-b:#FF4D6D;
  --brand-c:#FFB35C;
  --amber:#FFC24B;
  --mint:#45E0C0;
  --text:#F6F3FF;
  --text-2:#B9B0D6;
  --text-3:#7C7396;
  --grad:linear-gradient(120deg,#7C3BFF 0%,#FF4D6D 52%,#FFB35C 100%);
  --radius-card:22px;
  --radius-cover:16px;
  --shadow-soft:0 18px 40px -20px rgba(0,0,0,.75);
  --shadow-glow:0 22px 48px -18px rgba(124,59,255,.45);
  --ease:cubic-bezier(.22,.8,.28,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(900px 620px at -8% -6%, rgba(124,59,255,.16), transparent 62%),
    radial-gradient(760px 560px at 104% 96%, rgba(255,77,109,.13), transparent 60%);
  background-attachment:fixed;
  color:var(--text);
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.35}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(124,59,255,.45);color:#fff}
:focus-visible{outline:2px solid var(--brand-c);outline-offset:3px;border-radius:8px}

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:240px;z-index:90;
  display:flex;flex-direction:column;gap:22px;
  padding:26px 16px 20px;
  background:var(--ink-800);
  border-right:1px solid var(--line);
  overflow-y:auto;
  scrollbar-width:thin;
}
.sidebar::-webkit-scrollbar{width:6px}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:999px}
.brand{display:flex;align-items:center;gap:11px;padding:4px 8px 2px}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:var(--grad);
  display:grid;place-items:center;color:#fff;font-size:16px;
  box-shadow:0 10px 24px -12px rgba(124,59,255,.85);
}
.brand-text{font-size:16px;font-weight:800;letter-spacing:.01em;white-space:nowrap}
.brand-sub{font-size:11.5px;color:var(--text-3);letter-spacing:.16em;text-transform:uppercase}
.nav-group{display:flex;flex-direction:column;gap:6px}
.nav-title{font-size:11.5px;letter-spacing:.18em;color:var(--text-3);padding:0 10px 6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:14px;color:var(--text-2);
  font-size:14.5px;font-weight:600;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-item i{width:20px;text-align:center;font-size:15px}
.nav-item:hover{background:var(--ink-700);color:var(--text);transform:translateX(2px)}
.nav-item.active{background:var(--ink-700);color:var(--text)}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--grad);
}
.side-card{
  margin-top:auto;padding:16px;border-radius:18px;
  background:var(--ink-700);border:1px solid var(--line);
}
.side-card h4{font-size:13px;color:var(--text-2);font-weight:700;margin-bottom:10px;letter-spacing:.06em}
.side-card li{display:flex;flex-direction:column;gap:2px;padding:8px 0;border-bottom:1px dashed rgba(255,255,255,.06)}
.side-card li:last-child{border-bottom:0}
.side-card .t{font-size:13.5px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side-card .d{font-size:11.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 16px;border-radius:999px;background:var(--grad);color:#fff;
  font-size:14.5px;font-weight:700;
  transition:filter .22s var(--ease),transform .22s var(--ease);
}
.side-cta:hover{filter:brightness(1.08);transform:translateY(-1px)}

/* ============ 移动顶栏与抽屉 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;z-index:110;
  height:64px;align-items:center;justify-content:space-between;
  padding:0 16px;background:rgba(20,14,34,.78);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar .brand{padding:0;gap:9px}
.topbar .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:14px}
.drawer-btn{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--ink-700);display:grid;place-items:center;cursor:pointer;font-size:16px;
}
.drawer-btn:hover{border-color:rgba(255,255,255,.2)}
.overlay{
  display:none;position:fixed;inset:0;z-index:105;background:rgba(0,0,0,.6);
  opacity:0;transition:opacity .25s var(--ease);
}
.overlay.show{display:block;opacity:1}
.sidebar-close{display:none}

/* ============ 主体 ============ */
.main{margin-left:240px;min-height:100vh}
.section{padding:76px 48px 0;max-width:1360px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.section-title{display:flex;align-items:center;gap:12px;font-size:27px}
.section-title::before{content:"";width:5px;height:26px;border-radius:4px;background:var(--grad)}
.section-desc{margin-top:8px;font-size:14.5px;color:var(--text-2);max-width:640px}
.more-link{font-size:14px;font-weight:600;color:var(--text-2);display:inline-flex;align-items:center;gap:7px;white-space:nowrap;transition:color .2s var(--ease),gap .2s var(--ease)}
.more-link:hover{color:var(--brand-c);gap:11px}

/* ============ Hero ============ */
.hero{
  position:relative;min-height:88vh;display:flex;align-items:flex-end;
  padding:120px 48px 72px;overflow:hidden;
}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:.6}
.hero-glow{
  position:absolute;inset:0;
  background:
    radial-gradient(620px 420px at 8% 92%, rgba(124,59,255,.34), transparent 66%),
    radial-gradient(560px 400px at 88% 84%, rgba(255,77,109,.22), transparent 68%);
}
.hero-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(11,7,20,.55) 0%, rgba(11,7,20,.72) 46%, var(--ink-900) 100%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:minmax(0,7fr) minmax(240px,4fr);gap:44px;align-items:end;width:100%;max-width:1360px}
.hero-kicker{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--text);
  background:rgba(124,59,255,.16);border:1px solid rgba(255,195,92,.35);
  margin-bottom:22px;
}
.hero-kicker .dot{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(69,224,192,.18)}
.hero h1{font-size:46px;line-height:1.22;letter-spacing:-.015em}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.9;color:var(--text-2);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 28px;border-radius:999px;font-size:15px;font-weight:700;
  cursor:pointer;border:1px solid transparent;white-space:nowrap;
  transition:filter .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 16px 34px -18px rgba(124,59,255,.85)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:rgba(255,179,92,.6);background:rgba(255,255,255,.03)}
.hero-stats{display:flex;flex-direction:column;gap:12px;padding-bottom:6px}
.stat{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 18px;border-radius:18px;
  background:rgba(29,21,51,.78);border:1px solid rgba(255,194,75,.28);
  backdrop-filter:blur(6px);
}
.stat:nth-child(2){border-color:rgba(69,224,192,.28)}
.stat:nth-child(3){border-color:rgba(124,59,255,.32)}
.stat .k{font-size:13.5px;color:var(--text-2)}
.stat .v{font-size:17px;font-weight:800;color:var(--amber);font-variant-numeric:tabular-nums}
.stat:nth-child(2) .v{color:var(--mint)}
.stat:nth-child(3) .v{color:#D9C6FF}

/* ============ 横滑片库 ============ */
.rail-wrap{position:relative}
.rail{
  display:flex;gap:16px;overflow-x:auto;padding:4px 4px 14px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
}
.rail::-webkit-scrollbar{width:0;height:0}
.rail-card{
  flex:0 0 238px;scroll-snap-align:start;
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:12px;transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.rail-card:hover{transform:translateY(-4px);border-color:rgba(124,59,255,.65);box-shadow:var(--shadow-glow)}
.rail-cover{border-radius:var(--radius-cover);overflow:hidden;aspect-ratio:16/9;background:var(--ink-800);border:1px solid rgba(255,255,255,.07)}
.rail-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.rail-card:hover .rail-cover img{transform:scale(1.03)}
.rail-card h3{font-size:17px;margin-top:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rail-meta{display:flex;align-items:center;gap:8px;margin-top:9px;flex-wrap:wrap}
.rail-arrows{display:flex;gap:9px}
.arrow-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--ink-700);
  color:var(--text-2);display:grid;place-items:center;cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.arrow-btn:hover{color:#fff;border-color:rgba(124,59,255,.7);transform:translateY(-2px)}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  height:24px;padding:0 10px;border-radius:999px;
  font-size:12px;font-weight:600;letter-spacing:.02em;white-space:nowrap;
  font-variant-numeric:tabular-nums;
}
.badge-cat{color:#D9C6FF;background:rgba(124,59,255,.14);border:1px solid rgba(124,59,255,.34)}
.badge-amber{color:var(--amber);background:rgba(255,194,75,.12);border:1px solid rgba(255,194,75,.3)}
.badge-mint{color:var(--mint);background:rgba(69,224,192,.12);border:1px solid rgba(69,224,192,.3)}

/* ============ 热播推荐 ============ */
.hot-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.hot-main{
  grid-column:span 2;grid-row:span 2;position:relative;overflow:hidden;
  border-radius:var(--radius-card);border:1px solid var(--line);background:var(--ink-700);
  display:flex;align-items:flex-end;min-height:420px;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),transform .25s var(--ease);
}
.hot-main:hover{border-color:rgba(124,59,255,.65);box-shadow:var(--shadow-glow);transform:translateY(-4px)}
.hot-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.75;transition:transform .4s var(--ease)}
.hot-main:hover img{transform:scale(1.03)}
.hot-main::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,7,20,.1) 20%,rgba(11,7,20,.92) 100%)}
.hot-main-body{position:relative;padding:24px}
.hot-main-body h3{font-size:26px;margin:12px 0 8px}
.hot-main-body p{font-size:14.5px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hot-meta{display:flex;align-items:center;gap:12px;margin-top:16px;font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}
.hot-card{
  position:relative;border-radius:var(--radius-card);border:1px solid var(--line);background:var(--ink-700);
  padding:14px;transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.hot-card:hover{transform:translateY(-4px);border-color:rgba(255,77,109,.55);box-shadow:var(--shadow-glow)}
.hot-card .idx{
  position:absolute;top:12px;left:12px;z-index:2;
  width:30px;height:30px;border-radius:10px;display:grid;place-items:center;
  font-size:12.5px;font-weight:800;color:#fff;background:rgba(11,7,20,.72);
  border:1px solid rgba(255,255,255,.14);font-variant-numeric:tabular-nums;
}
.hot-card .thumb{border-radius:14px;overflow:hidden;aspect-ratio:16/9;background:var(--ink-800);border:1px solid rgba(255,255,255,.07)}
.hot-card .thumb img{width:100%;height:100%;object-fit:cover}
.hot-card h3{font-size:16.5px;margin-top:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 片单分区 ============ */
.tabbar{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:22px;overflow-x:auto;scrollbar-width:none}
.tabbar::-webkit-scrollbar{height:0}
.tab{
  position:relative;padding:12px 18px;font-size:14.5px;font-weight:600;color:var(--text-3);
  background:none;border:0;cursor:pointer;white-space:nowrap;transition:color .2s var(--ease);
}
.tab:hover{color:var(--text-2)}
.tab.active{color:var(--text)}
.tab.active::after{content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:2px;border-radius:2px;background:var(--grad)}
.play-list{display:flex;flex-direction:column;gap:10px}
.play-row{
  display:grid;grid-template-columns:96px minmax(0,1fr) auto;align-items:center;gap:18px;
  padding:12px 18px 12px 12px;border-radius:18px;
  background:var(--ink-700);border:1px solid var(--line);
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.play-row:hover{transform:translateX(4px);border-color:rgba(124,59,255,.5);background:#221938}
.play-thumb{width:96px;height:56px;border-radius:12px;overflow:hidden;background:var(--ink-800);border:1px solid rgba(255,255,255,.07)}
.play-thumb img{width:100%;height:100%;object-fit:cover}
.play-body h3{font-size:16.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.play-body .sub{font-size:13px;color:var(--text-3);margin-top:3px}
.play-right{display:flex;align-items:center;gap:14px;color:var(--text-3);font-size:13px}
.play-right i{transition:transform .2s var(--ease)}
.play-row:hover .play-right i{transform:translateX(4px);color:var(--brand-c)}

/* ============ 最新信息 (CMS) ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.news-card{
  display:flex;flex-direction:column;gap:12px;
  padding:22px;border-radius:var(--radius-card);
  background:var(--ink-700);border:1px solid var(--line);
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(124,59,255,.6);box-shadow:var(--shadow-glow)}
.news-card h3{font-size:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card p{font-size:14.5px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px}
.news-time{font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 24px;
  border-radius:var(--radius-card);border:1px dashed rgba(255,255,255,.14);background:rgba(29,21,51,.5);
}
.empty-state i{font-size:44px;color:var(--text-3)}
.empty-state p{margin:16px 0 22px;color:var(--text-2);font-size:15px}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:980px}
.faq-item{
  border-radius:18px;border:1px solid var(--line);background:var(--ink-700);
  overflow:hidden;transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-item[open]{background:#221938;border-color:rgba(124,59,255,.45)}
.faq-item summary{
  position:relative;display:flex;align-items:center;gap:16px;
  min-height:58px;padding:16px 56px 16px 20px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:700;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--text-3);transition:color .2s var(--ease);
}
.faq-item[open] summary::after{content:"–";color:var(--brand-c)}
.faq-num{
  flex:0 0 auto;width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  font-size:12.5px;font-weight:800;color:#fff;background:var(--grad);font-variant-numeric:tabular-nums;
}
.faq-a{padding:0 22px 20px 70px;font-size:15px;color:var(--text-2);line-height:1.9}

/* ============ CTA ============ */
.cta-panel{
  position:relative;overflow:hidden;border-radius:26px;padding:44px;
  background:var(--ink-700);border:1px solid transparent;
  background-image:linear-gradient(var(--ink-700),var(--ink-700)),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,420px);gap:34px;align-items:center;
}
.cta-panel h2{font-size:28px}
.cta-panel p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:520px}
.cta-form{display:flex;gap:12px}
.cta-form input{
  flex:1;height:50px;padding:0 18px;border-radius:14px;
  background:#150F26;border:1px solid var(--line);color:var(--text);font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.cta-form input::placeholder{color:var(--text-3)}
.cta-form input:focus{outline:none;border-color:rgba(124,59,255,.85);box-shadow:0 0 0 3px rgba(124,59,255,.2)}
.cta-hint{margin-top:12px;font-size:12.5px;color:var(--text-3)}

/* ============ 页脚 ============ */
.footer{margin-top:84px;background:var(--ink-800);border-top:1px solid var(--line)}
.footer-inner{max-width:1360px;padding:56px 48px 0;display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:34px}
.footer h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.04em}
.footer p{font-size:14px;color:var(--text-2)}
.footer li{margin-bottom:10px}
.footer li a{font-size:14px;color:var(--text-2);transition:color .2s var(--ease),text-underline-offset .2s var(--ease)}
.footer li a:hover{color:var(--text);text-decoration:underline;text-underline-offset:3px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.footer-bottom{
  max-width:1360px;margin-top:44px;padding:20px 48px 28px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hot-main{grid-column:span 2;grid-row:auto;min-height:340px}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-inner{grid-template-columns:1fr 1fr;gap:28px}
}
@media (min-width:768px) and (max-width:1023px){
  .sidebar{width:72px;padding:20px 10px;gap:18px}
  .brand{padding:0;justify-content:center}
  .brand-text,.brand-sub,.nav-title,.nav-label,.side-card,.side-cta span{display:none}
  .nav-item{justify-content:center;padding:12px 0}
  .side-cta{width:44px;height:44px;padding:0;margin:0 auto;border-radius:14px}
  .main{margin-left:72px}
  .section{padding:60px 24px 0}
  .hero{padding:96px 24px 56px}
  .hero-inner{grid-template-columns:1fr;gap:30px}
  .hero h1{font-size:36px}
  .hero-stats{flex-direction:row;flex-wrap:wrap}
  .stat{flex:1 1 180px}
  .cta-panel{grid-template-columns:1fr;padding:34px}
  .footer-inner{padding:48px 24px 0}
  .footer-bottom{padding:20px 24px 26px}
}
@media (max-width:767px){
  .sidebar{
    width:84vw;max-width:320px;transform:translateX(-100%);
    transition:transform .28s var(--ease);z-index:120;padding-top:22px;
  }
  .sidebar.open{transform:translateX(0)}
  .sidebar-close{
    display:grid;place-items:center;width:44px;height:44px;border-radius:12px;
    border:1px solid var(--line);background:var(--ink-700);cursor:pointer;font-size:16px;
    margin-left:auto;
  }
  .topbar{display:flex}
  .main{margin-left:0;padding-top:64px}
  .section{padding:48px 16px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .section-title{font-size:22px}
  .section-title::before{height:22px}
  .hero{min-height:64vh;padding:72px 16px 48px}
  .hero h1{font-size:29px;line-height:1.32}
  .hero-sub{font-size:15.5px}
  .hero-actions{gap:10px}
  .btn{flex:1 1 100%;padding:13px 20px}
  .hero-stats{flex-direction:column}
  .hot-grid{grid-template-columns:1fr}
  .hot-main{grid-column:span 1;min-height:300px}
  .hot-main-body h3{font-size:21px}
  .news-grid{grid-template-columns:1fr}
  .play-row{grid-template-columns:72px minmax(0,1fr);gap:12px;padding:10px}
  .play-thumb{width:72px;height:44px}
  .play-right{grid-column:2;justify-content:flex-start;gap:10px}
  .cta-panel{grid-template-columns:1fr;padding:26px;gap:22px}
  .cta-panel h2{font-size:22px}
  .cta-form{flex-direction:column}
  .cta-form .btn{width:100%}
  .faq-a{padding:0 18px 18px 18px}
  .faq-item summary{padding:14px 48px 14px 16px;font-size:15px}
  .footer-inner{grid-template-columns:1fr;gap:26px;padding:44px 16px 0}
  .footer-bottom{padding:18px 16px 24px;flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
    --ink-900:#0B0714; --ink-800:#140E22; --ink-700:#1D1533;
    --line:rgba(255,255,255,.08);
    --brand-a:#7C3BFF; --brand-b:#FF4D6D; --brand-c:#FFB35C;
    --amber:#FFC24B; --mint:#45E0C0;
    --text:#F6F3FF; --text-2:#B9B0D6; --text-3:#7C7396;
    --grad:linear-gradient(120deg,#7C3BFF 0%,#FF4D6D 52%,#FFB35C 100%);
    --radius-card:22px; --radius-cover:16px;
    --shadow-card:0 18px 40px -20px rgba(0,0,0,.75);
    --shadow-glow:0 22px 48px -18px rgba(124,59,255,.45);
    --ease:cubic-bezier(.22,.8,.28,1);
    --sidebar-w:240px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0; min-height:100%;
    background-color:var(--ink-900);
    background-image:
      radial-gradient(680px 520px at 6% -8%, rgba(124,59,255,.18), transparent 65%),
      radial-gradient(720px 560px at 98% 106%, rgba(255,77,109,.15), transparent 62%);
    background-attachment:fixed;
    color:var(--text);
    font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
    font-size:16.5px; line-height:1.85; letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  body.no-scroll{overflow:hidden;}
  ::selection{background:rgba(124,59,255,.45);}

  .container{width:100%;max-width:1360px;margin:0 auto;padding:0 24px;}

  /* ============ 左侧导航 ============ */
  .sidebar{
    position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);z-index:80;
    display:flex;flex-direction:column;gap:18px;padding:22px 16px;
    background:var(--ink-800);border-right:1px solid var(--line);
    overflow-y:auto;overscroll-behavior:contain;
  }
  .sidebar::-webkit-scrollbar{width:6px;}
  .sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:6px;}
  .brand{display:flex;align-items:center;gap:12px;flex:none;}
  .brand-mark{
    width:40px;height:40px;border-radius:13px;flex:none;
    display:grid;place-items:center;font-size:17px;color:#fff;
    background:var(--grad);box-shadow:var(--shadow-glow);
  }
  .brand-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap;}
  .side-nav{display:flex;flex-direction:column;gap:4px;}
  .nav-item{
    position:relative;display:flex;align-items:center;gap:12px;
    padding:11px 12px;border-radius:14px;color:var(--text-2);
    font-size:15px;font-weight:600;transition:background .2s var(--ease),color .2s var(--ease);
  }
  .nav-item i{width:20px;text-align:center;font-size:15px;}
  .nav-item::before{
    content:"";position:absolute;left:0;top:50%;width:3px;height:20px;border-radius:3px;
    background:var(--grad);transform:translateY(-50%) scaleY(0);transition:transform .2s var(--ease);
  }
  .nav-item:hover{background:var(--ink-700);color:var(--text);}
  .nav-item.is-active{background:var(--ink-700);color:var(--text);}
  .nav-item.is-active::before{transform:translateY(-50%) scaleY(1);}
  .nav-tip{display:none;}
  .sidebar-card{
    background:var(--ink-700);border:1px solid var(--line);border-radius:18px;
    padding:14px;display:flex;flex-direction:column;gap:8px;
  }
  .sidebar-card h3{font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--text-3);margin-bottom:2px;}
  .mini-item{display:block;padding:8px 10px;border-radius:12px;background:rgba(255,255,255,.02);transition:background .2s var(--ease);}
  .mini-item:hover{background:rgba(124,59,255,.16);}
  .mini-title{display:block;font-size:13.5px;line-height:1.55;color:var(--text);}
  .mini-time{display:block;margin-top:2px;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}
  .side-cta{
    margin-top:auto;display:flex;align-items:center;justify-content:center;gap:8px;
    padding:12px;border-radius:999px;background:var(--grad);color:#fff;
    font-size:15px;font-weight:700;box-shadow:var(--shadow-glow);
    transition:filter .2s var(--ease),transform .2s var(--ease);
  }
  .side-cta:hover{filter:brightness(1.08);transform:translateY(-1px);}

  /* ============ 移动顶栏 ============ */
  .topbar{
    display:none;position:fixed;top:0;left:0;right:0;height:64px;z-index:70;
    align-items:center;justify-content:space-between;padding:0 16px;
    background:rgba(11,7,20,.66);border-bottom:1px solid transparent;
    transition:background .25s var(--ease),border-color .25s var(--ease);
  }
  .topbar.is-scrolled{
    background:rgba(11,7,20,.88);border-bottom-color:var(--line);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  }
  .topbar .brand-text{font-size:15.5px;}
  .topbar .brand-mark{width:36px;height:36px;border-radius:12px;font-size:15px;}
  .drawer-btn{
    width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line);
    border-radius:13px;background:var(--ink-700);color:var(--text);cursor:pointer;
    transition:border-color .2s var(--ease),background .2s var(--ease);
  }
  .drawer-btn:hover{border-color:rgba(124,59,255,.6);background:rgba(124,59,255,.14);}
  .drawer-btn:focus-visible{outline:2px solid var(--brand-b);outline-offset:2px;}
  .drawer-mask{
    position:fixed;inset:0;z-index:75;background:rgba(0,0,0,.62);
    opacity:0;pointer-events:none;transition:opacity .25s var(--ease);display:none;
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto;}

  /* ============ 主区域 ============ */
  .main{margin-left:var(--sidebar-w);padding:34px 0 76px;transition:margin .28s var(--ease);}
  .crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--text-3);}
  .crumb a{transition:color .2s var(--ease);}
  .crumb a:hover{color:var(--text);}
  .crumb i{font-size:10px;opacity:.6;}
  .crumb .current{color:var(--text-3);max-width:min(520px,70vw);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

  .article-grid{
    display:grid;grid-template-columns:minmax(0,1fr) 330px;
    gap:44px;align-items:start;margin-top:26px;
  }

  .article-head{padding-bottom:26px;border-bottom:1px solid var(--line);}
  .badge{
    display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
    font-size:12.5px;font-weight:700;font-variant-numeric:tabular-nums;
  }
  .badge-cat{color:#E6DBFF;background:rgba(124,59,255,.16);box-shadow:inset 0 0 0 1px rgba(124,59,255,.36);}
  .badge-amber{color:var(--amber);background:rgba(255,194,75,.12);box-shadow:inset 0 0 0 1px rgba(255,194,75,.3);}
  .badge-mint{color:var(--mint);background:rgba(69,224,192,.12);box-shadow:inset 0 0 0 1px rgba(69,224,192,.3);}
  .article-head h1{
    font-size:clamp(28px,3.3vw,44px);line-height:1.3;font-weight:800;
    letter-spacing:-.01em;margin:16px 0 18px;
  }
  .meta-row{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:var(--text-3);}
  .meta-item{display:inline-flex;align-items:center;gap:7px;font-variant-numeric:tabular-nums;}

  /* ============ 正文排版 ============ */
  .article-body{max-width:820px;padding:30px 0 4px;font-size:17.5px;line-height:1.9;color:#E7E1F7;}
  .article-body > * + *{margin-top:1.2em;}
  .article-body p{margin:0;}
  .article-body h2{
    position:relative;font-size:clamp(22px,2.2vw,28px);font-weight:800;line-height:1.45;
    letter-spacing:-.01em;color:var(--text);margin-top:44px;padding-left:18px;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.26em;bottom:.16em;width:4px;
    border-radius:4px;background:var(--grad);
  }
  .article-body h3{font-size:20px;font-weight:700;color:var(--text);margin-top:30px;}
  .article-body h4{font-size:17.5px;font-weight:700;color:var(--text);margin-top:24px;}
  .article-body strong{color:var(--text);font-weight:700;}
  .article-body a{color:#C9A6FF;text-decoration:underline;text-underline-offset:3px;}
  .article-body a:hover{color:#fff;}
  .article-body ul{display:flex;flex-direction:column;gap:9px;}
  .article-body ul li{position:relative;padding-left:20px;}
  .article-body ul li::before{
    content:"";position:absolute;left:2px;top:.78em;width:7px;height:7px;border-radius:50%;
    background:var(--grad);
  }
  .article-body ol{counter-reset:art;display:flex;flex-direction:column;gap:9px;}
  .article-body ol li{position:relative;padding-left:30px;counter-increment:art;}
  .article-body ol li::before{
    content:counter(art);position:absolute;left:0;top:.24em;width:20px;height:20px;border-radius:7px;
    display:grid;place-items:center;font-size:12px;font-weight:800;color:#fff;
    background:rgba(124,59,255,.4);box-shadow:inset 0 0 0 1px rgba(124,59,255,.5);
  }
  .article-body blockquote{
    position:relative;padding:20px 24px;border-radius:14px;background:var(--ink-700);
    color:#D9D2F2;font-size:16.5px;
  }
  .article-body blockquote::before{
    content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;background:var(--grad);
  }
  .article-body img{border-radius:var(--radius-cover);border:1px solid var(--line);margin:24px auto;}
  .article-body figure{margin:24px 0;}
  .article-body figcaption{text-align:center;font-size:13px;color:var(--text-3);margin-top:10px;}
  .article-body table{
    width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border-radius:16px;
    background:rgba(255,255,255,.02);font-size:15.5px;margin:24px 0;
  }
  .article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;}
  .article-body th{background:rgba(124,59,255,.14);color:var(--text);font-weight:700;}
  .article-body tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
  .article-body tbody tr:last-child td{border-bottom:0;}
  .article-body hr{border:0;height:1px;background:var(--line);margin:32px 0;}

  .empty-state{
    text-align:center;padding:64px 24px;background:var(--ink-700);
    border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);
  }
  .empty-state i{font-size:44px;color:var(--text-3);}
  .empty-state p{font-size:20px;font-weight:800;margin:16px 0 8px;}
  .empty-state span{display:block;color:var(--text-2);font-size:14.5px;margin-bottom:22px;}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;
    font-size:15px;font-weight:600;padding:14px 28px;border-radius:999px;text-align:center;
    transition:filter .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
  }
  .btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow-glow);}
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{background:transparent;color:var(--text);box-shadow:inset 0 0 0 1px var(--line);}
  .btn-ghost:hover{box-shadow:inset 0 0 0 1px rgba(124,59,255,.62);color:#fff;}
  .btn-ghost:active{transform:translateY(1px);}
  .btn:focus-visible{outline:2px solid var(--brand-b);outline-offset:3px;}

  /* ============ 标签 ============ */
  .tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line);}
  .tag{
    padding:8px 15px;border-radius:999px;font-size:13.5px;color:var(--text-2);
    box-shadow:inset 0 0 0 1px var(--line);transition:all .2s var(--ease);
  }
  .tag:hover{color:#fff;background:rgba(124,59,255,.16);box-shadow:inset 0 0 0 1px rgba(124,59,255,.45);}

  /* ============ 通用板块 ============ */
  .block{margin-top:52px;}
  .section-title{display:flex;align-items:center;gap:12px;font-size:clamp(20px,2vw,26px);font-weight:800;letter-spacing:-.01em;}
  .section-title::before{content:"";width:4px;height:20px;border-radius:3px;background:var(--grad);}
  .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:22px;}
  .section-link{font-size:14px;color:var(--text-2);transition:color .2s var(--ease);}
  .section-link:hover{color:var(--text);}

  /* ============ 卡片 ============ */
  .card{
    display:block;background:var(--ink-700);border:1px solid var(--line);
    border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
    transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
  }
  .card:hover{transform:translateY(-4px);border-color:rgba(124,59,255,.55);box-shadow:var(--shadow-glow);}
  .card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-800);}
  .card-cover img{width:100%;height:100%;object-fit:cover;border-bottom:1px solid var(--line);transition:transform .35s var(--ease);}
  .card:hover .card-cover img{transform:scale(1.03);}
  .card-body{padding:14px 16px 18px;}
  .card-title{font-size:16px;font-weight:700;line-height:1.5;}
  .card-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px;font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;}

  .related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}

  /* ============ 右栏面板 ============ */
  .panel{
    background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:20px;box-shadow:var(--shadow-card);
  }
  .panel + .panel{margin-top:20px;}
  .panel-title{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;margin-bottom:14px;}
  .panel-title::before{content:"";width:4px;height:18px;border-radius:3px;background:var(--grad);}
  .rank-item{display:flex;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);}
  .rank-item:last-child{border-bottom:0;padding-bottom:0;}
  .rank-no{font-size:13px;font-weight:800;color:var(--brand-c);min-width:22px;font-variant-numeric:tabular-nums;}
  .rank-title{font-size:14.5px;line-height:1.6;color:var(--text-2);transition:color .2s var(--ease);}
  .rank-item:hover .rank-title{color:var(--text);}
  .rank-time{display:block;margin-top:2px;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums;}
  .chip-group{display:flex;flex-wrap:wrap;gap:10px;}
  .chip{
    padding:8px 14px;border-radius:999px;font-size:13.5px;color:var(--text-2);
    box-shadow:inset 0 0 0 1px var(--line);transition:all .2s var(--ease);
  }
  .chip:hover{color:#fff;background:rgba(124,59,255,.16);box-shadow:inset 0 0 0 1px rgba(124,59,255,.5);}

  /* ============ CTA ============ */
  .cta-card{margin-top:52px;padding:1px;border-radius:24px;background:var(--grad);box-shadow:var(--shadow-glow);}
  .cta-inner{
    border-radius:23px;padding:28px;
    background:linear-gradient(180deg,rgba(29,21,51,.97),rgba(20,14,34,.99));
    display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
  }
  .cta-inner h2{font-size:clamp(20px,2vw,24px);font-weight:800;letter-spacing:-.01em;}
  .cta-inner p{color:var(--text-2);font-size:14.5px;margin-top:8px;}
  .cta-form{display:flex;gap:10px;}
  .cta-form input{
    height:48px;min-width:250px;padding:0 16px;border-radius:12px;outline:none;
    background:var(--ink-800);border:1px solid var(--line);color:var(--text);
    transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
  }
  .cta-form input::placeholder{color:var(--text-3);}
  .cta-form input:focus{border-color:transparent;box-shadow:0 0 0 1px var(--brand-a),0 0 0 4px rgba(124,59,255,.18);}
  .form-note{font-size:12.5px;color:var(--text-3);margin-top:10px;}

  .back-row{margin-top:34px;display:flex;justify-content:flex-start;}

  /* ============ 页脚 ============ */
  .footer{margin-left:var(--sidebar-w);background:var(--ink-800);border-top:1px solid var(--line);padding-top:56px;transition:margin .28s var(--ease);}
  .footer-inner{
    max-width:1360px;margin:0 auto;padding:0 24px 40px;
    display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;
  }
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
  .footer h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--text);margin-bottom:16px;}
  .footer ul{display:flex;flex-direction:column;gap:10px;}
  .footer ul a{font-size:14.5px;color:var(--text-2);transition:color .2s var(--ease);}
  .footer ul a:hover{color:var(--text);text-decoration:underline;text-underline-offset:3px;}
  .footer p{max-width:380px;font-size:14.5px;line-height:1.8;color:var(--text-2);}
  .footer-bottom{
    max-width:1360px;margin:0 auto;padding:20px 24px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
    font-size:13px;color:var(--text-3);
  }

  /* ============ 动效 ============ */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .28s var(--ease),transform .28s var(--ease);}
  .reveal.is-in{opacity:1;transform:none;}

  /* ============ 平板：图标窄栏 ============ */
  @media (min-width:768px) and (max-width:1023px){
    :root{--sidebar-w:72px;}
    .sidebar{padding:18px 8px;align-items:center;}
    .brand-text,
    .nav-label,
    .sidebar-card,
    .side-cta-text{display:none;}
    .nav-item{justify-content:center;padding:12px 0;width:100%;}
    .nav-item i{width:auto;font-size:16px;}
    .nav-tip{
      display:block;position:absolute;left:62px;top:50%;transform:translateY(-50%);
      padding:6px 10px;border-radius:10px;background:var(--ink-700);border:1px solid var(--line);
      color:var(--text);font-size:13px;font-weight:600;white-space:nowrap;
      opacity:0;pointer-events:none;transition:opacity .18s var(--ease);z-index:5;
    }
    .nav-item:hover .nav-tip,.nav-item:focus-visible .nav-tip{opacity:1;}
    .side-cta{padding:12px;border-radius:16px;}
    .footer-inner{grid-template-columns:1fr 1fr;gap:28px;}
  }

  /* ============ 移动：顶部栏 + 抽屉 ============ */
  @media (max-width:767px){
    :root{--sidebar-w:0px;}
    body{font-size:16px;}
    .sidebar{
      width:min(84vw,320px);padding:22px 16px;transform:translateX(-100%);
      transition:transform .28s var(--ease);box-shadow:28px 0 60px -30px rgba(0,0,0,.92);
    }
    .sidebar.is-open{transform:none;}
    .drawer-mask{display:block;}
    .topbar{display:flex;}
    .main{padding-top:84px;padding-bottom:56px;}
    .container{padding:0 16px;}
    .article-grid{grid-template-columns:1fr;gap:32px;margin-top:20px;}
    .article-body{font-size:17px;line-height:1.9;}
    .related-grid{grid-template-columns:1fr;gap:16px;}
    .cta-inner{grid-template-columns:1fr;padding:22px;}
    .cta-form{flex-direction:column;}
    .cta-form input{min-width:0;width:100%;}
    .cta-form .btn{width:100%;}
    .footer{padding-top:44px;}
    .footer-inner{grid-template-columns:1fr;gap:26px;padding:0 16px 32px;}
    .footer-bottom{padding:18px 16px;flex-direction:column;}
    .crumb .current{max-width:100%;}
  }

  @media (prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important;}
    html{scroll-behavior:auto;}
    .reveal{opacity:1;transform:none;}
  }

/* roulang page: category1 */
:root{
  --ink-900:#0B0714;
  --ink-800:#140E22;
  --ink-700:#1D1533;
  --line:rgba(255,255,255,.08);
  --brand-a:#7C3BFF;
  --brand-b:#FF4D6D;
  --brand-c:#FFB35C;
  --amber:#FFC24B;
  --mint:#45E0C0;
  --text:#F6F3FF;
  --text-2:#B9B0D6;
  --text-3:#7C7396;
  --grad:linear-gradient(120deg,#7C3BFF 0%,#FF4D6D 52%,#FFB35C 100%);
  --grad-soft:linear-gradient(120deg,rgba(124,59,255,.16),rgba(255,77,109,.12));
  --r-card:22px;
  --r-sm:14px;
  --r-pill:999px;
  --shadow:0 18px 40px -20px rgba(0,0,0,.75);
  --shadow-hover:0 22px 48px -18px rgba(124,59,255,.45);
  --ease:cubic-bezier(.22,.8,.28,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(620px 430px at 6% -8%, rgba(124,59,255,.18), transparent 70%),
    radial-gradient(700px 470px at 102% 104%, rgba(255,77,109,.13), transparent 72%);
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(124,59,255,.42)}
:focus-visible{outline:2px solid var(--brand-c);outline-offset:2px;border-radius:10px}

/* ===== 布局骨架 ===== */
.shell{position:relative;z-index:1}
.container{width:100%;max-width:1360px;margin:0 auto}
.main{margin-left:0;padding:84px 16px 0;position:relative;z-index:1}
@media(min-width:768px){.main{margin-left:72px;padding:28px 24px 0}}
@media(min-width:1024px){.main{margin-left:240px;padding:32px 32px 0}}
.section{padding:52px 0}
@media(min-width:1024px){.section{padding:80px 0}}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ===== 品牌 ===== */
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:12px;flex:none;
  background-image:var(--grad);
  color:#fff;font-size:15px;box-shadow:0 10px 24px -14px rgba(124,59,255,.9);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}

/* ===== 顶部栏（移动端）===== */
.topbar{display:none}
.drawer-btn{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;background:var(--ink-700);border:1px solid var(--line);color:var(--text);
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.drawer-btn:hover{border-color:rgba(124,59,255,.6)}
@media(max-width:767px){
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:64px;padding:0 16px;z-index:70;
    background:rgba(11,7,20,.86);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    transition:background .25s var(--ease);
  }
  .topbar.scrolled{background:rgba(11,7,20,.97)}
}

/* ===== 左侧导航 ===== */
.sidebar{
  position:fixed;top:0;bottom:0;left:0;z-index:60;
  width:84vw;max-width:320px;
  background:var(--ink-800);
  border-right:1px solid var(--line);
  padding:22px 16px;
  display:flex;flex-direction:column;gap:18px;
  overflow-y:auto;
  transform:translateX(-100%);
  transition:transform .3s var(--ease);
  box-shadow:var(--shadow);
}
.sidebar.open{transform:none}
.side-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.side-close{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;background:transparent;border:1px solid var(--line);color:var(--text-2);
}
.side-close:hover{color:var(--text);border-color:rgba(124,59,255,.6)}
.nav-main{display:flex;flex-direction:column;gap:6px}
.nav-label{font-size:12px;letter-spacing:.08em;color:var(--text-3);padding:0 14px 4px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 14px;border-radius:12px;font-size:15px;color:var(--text-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.nav-item i{width:20px;text-align:center;font-size:15px}
.nav-item:hover{background:var(--ink-700);color:var(--text)}
.nav-item.active{background:var(--ink-700);color:var(--text);font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:3px;border-radius:2px;
  background:var(--grad);
}
.side-card{background:var(--ink-700);border:1px solid var(--line);border-radius:16px;padding:14px}
.side-card h4{font-size:12.5px;font-weight:600;color:var(--text-3);letter-spacing:.04em;margin-bottom:8px}
.side-card li a{
  display:block;font-size:13.5px;color:var(--text-2);padding:7px 0;
  border-bottom:1px dashed rgba(255,255,255,.07);
  transition:color .2s var(--ease);
}
.side-card li:last-child a{border-bottom:0}
.side-card li a:hover{color:var(--text)}
.side-foot{margin-top:auto}
.side-cta{width:100%;justify-content:center}
.nav-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:55;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.nav-mask.show{opacity:1;visibility:visible}

@media(min-width:768px){
  .sidebar{
    width:72px;max-width:none;transform:none;padding:20px 10px;align-items:center;gap:16px;
  }
  .sidebar .brand-text{display:none}
  .sidebar .nav-item{justify-content:center;padding:12px 0}
  .sidebar .nav-item span{display:none}
  .sidebar .nav-label{display:none}
  .sidebar .side-card{display:none}
  .side-close{display:none}
  .side-cta span{display:none}
  .side-cta{padding:12px 0}
  .nav-mask{display:none}
}
@media(min-width:1024px){
  .sidebar{width:240px;padding:24px 16px;align-items:stretch;gap:20px}
  .sidebar .brand-text{display:inline}
  .sidebar .nav-item{justify-content:flex-start;padding:11px 14px}
  .sidebar .nav-item span{display:inline}
  .sidebar .nav-label{display:block}
  .sidebar .side-card{display:block}
  .side-cta span{display:inline}
}

/* ===== 通用组件 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);font-size:15px;font-weight:600;
  border:0;cursor:pointer;
  transition:transform .22s var(--ease),filter .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);
}
.btn-primary{background-image:var(--grad);color:#fff;box-shadow:0 16px 34px -18px rgba(124,59,255,.9)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background-color:transparent;border:1px solid var(--line);color:var(--text)}
.btn-ghost:hover{border-color:rgba(255,179,92,.7);color:#fff;transform:translateY(-1px)}
.btn-sm{padding:11px 20px;font-size:14px}

.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12.5px;font-variant-numeric:tabular-nums;
  background-color:rgba(255,194,75,.12);
  color:var(--amber);
  border:1px solid rgba(255,194,75,.3);
  white-space:nowrap;
}
.badge.mint{background-color:rgba(69,224,192,.12);color:var(--mint);border-color:rgba(69,224,192,.3)}
.badge.plain{background-color:rgba(255,255,255,.04);color:var(--text-2);border-color:var(--line)}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px;flex-wrap:wrap}
.sec-title{display:flex;align-items:center;gap:12px;font-size:22px}
.sec-title::before{content:"";width:4px;height:22px;border-radius:2px;background:var(--grad);flex:none}
@media(min-width:1024px){.sec-title{font-size:28px}}
.sec-sub{margin-top:10px;color:var(--text-2);font-size:15px;max-width:720px}
.sec-more{color:var(--text-2);font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:color .2s var(--ease)}
.sec-more:hover{color:var(--text)}

.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s var(--ease),transform .26s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none!important}
}

/* ===== 横幅 ===== */
.page-banner{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  border:1px solid var(--line);box-shadow:var(--shadow);
  min-height:250px;display:flex;align-items:flex-end;
}
.banner-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.banner-mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,7,20,.28) 0%,rgba(11,7,20,.72) 52%,rgba(11,7,20,.96) 100%);
}
.banner-mask::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(520px 300px at 12% 100%, rgba(124,59,255,.3), transparent 68%);
}
.banner-inner{position:relative;width:100%;padding:28px 20px}
@media(min-width:768px){.banner-inner{padding:36px 32px}}
@media(min-width:1024px){.page-banner{min-height:300px}.banner-inner{padding:44px 40px}}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:14px;flex-wrap:wrap}
.crumb a{transition:color .2s var(--ease)}
.crumb a:hover{color:var(--text)}
.crumb-cur{color:var(--text-2)}
.banner-title{font-size:32px;line-height:1.22}
@media(min-width:1024px){.banner-title{font-size:46px}}
.banner-desc{margin-top:14px;max-width:760px;color:var(--text-2);font-size:15.5px}
@media(min-width:1024px){.banner-desc{font-size:17px}}
.banner-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}

/* ===== 筛选胶囊 ===== */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.chip{
  padding:9px 18px;border-radius:var(--r-pill);font-size:14px;color:var(--text-2);
  background-color:var(--ink-800);border:1px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{color:var(--text);border-color:rgba(255,255,255,.22);transform:translateY(-1px)}
.chip.active{
  background-image:var(--grad);color:#fff;border-color:transparent;font-weight:600;
  box-shadow:0 14px 28px -18px rgba(124,59,255,.95);
}

/* ===== 卡片网格 ===== */
.grid-cards{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:560px){.grid-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.grid-cards{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(min-width:1280px){.grid-cards{grid-template-columns:repeat(4,minmax(0,1fr))}}
.card{
  background-color:var(--ink-700);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(124,59,255,.6);box-shadow:var(--shadow-hover)}
.card-cover{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background-color:#1D1533}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.card:hover .card-cover img{transform:scale(1.03)}
.card-cover::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(11,7,20,.32) 0%,rgba(11,7,20,0) 42%,rgba(11,7,20,.78) 100%);
}
.cover-tag{
  position:absolute;left:12px;top:12px;z-index:2;
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:10px;
  font-size:12px;color:var(--text);
  background-color:rgba(11,7,20,.72);
  border:1px solid rgba(255,255,255,.16);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.cover-badge{position:absolute;right:12px;bottom:12px;z-index:2}
.card-body{padding:16px 18px 20px}
.card-title{font-size:17.5px;line-height:1.4}
.card-title a{transition:color .2s var(--ease)}
.card-title a:hover{color:var(--brand-c)}
.card-meta{margin-top:10px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}
.dot{width:4px;height:4px;border-radius:50%;background-color:var(--text-3);flex:none}

/* ===== 更新时段 ===== */
.time-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:768px){.time-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.time-card{
  background-color:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.time-card:hover{border-color:rgba(255,179,92,.45);transform:translateY(-3px)}
.time-num{
  font-size:30px;font-weight:800;font-variant-numeric:tabular-nums;
  background-image:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.time-card h3{margin-top:8px;font-size:18px}
.time-card p{margin-top:10px;color:var(--text-2);font-size:14.5px}

/* ===== 图文分栏 ===== */
.split{display:grid;gap:24px;grid-template-columns:1fr;align-items:center}
@media(min-width:1024px){.split{grid-template-columns:1.05fr 1fr;gap:40px}}
.split-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;background-color:#1D1533}
.split-media img{width:100%;height:100%;object-fit:cover}
.split h2{font-size:24px}
@media(min-width:1024px){.split h2{font-size:30px}}
.split-lead{margin-top:14px;color:var(--text-2);font-size:15.5px}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:14px}
.point{display:flex;gap:14px;padding:16px 18px;border-radius:16px;background-color:var(--ink-800);border:1px solid var(--line)}
.point-num{
  font-size:13px;font-weight:700;color:var(--amber);font-variant-numeric:tabular-nums;
  min-width:26px;padding-top:2px;
}
.point h3{font-size:16.5px}
.point p{margin-top:6px;color:var(--text-2);font-size:14.5px}

/* ===== 步骤 ===== */
.steps{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:768px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.steps{grid-template-columns:repeat(4,minmax(0,1fr))}}
.step{
  position:relative;background-color:var(--ink-800);border:1px solid var(--line);
  border-radius:var(--r-card);padding:22px;
  transition:border-color .24s var(--ease),transform .24s var(--ease);
}
.step:hover{border-color:rgba(124,59,255,.55);transform:translateY(-3px)}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
  border-radius:11px;font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  color:#fff;background-image:var(--grad);
}
.step h3{margin-top:14px;font-size:17px}
.step p{margin-top:8px;color:var(--text-2);font-size:14.5px}

/* ===== 数据块 ===== */
.stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media(min-width:1024px){.stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat{
  background-color:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;
}
.stat strong{
  display:block;font-size:28px;font-weight:800;font-variant-numeric:tabular-nums;
  background-image:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat span{display:block;margin-top:6px;color:var(--text-2);font-size:14px}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background-color:var(--ink-800);border:1px solid var(--line);border-radius:18px;
  overflow:hidden;position:relative;transition:border-color .24s var(--ease),background-color .24s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;
  background-image:var(--grad);opacity:0;transition:opacity .24s var(--ease);
}
.faq-item.open{background-color:var(--ink-700);border-color:rgba(124,59,255,.5)}
.faq-item.open::before{opacity:1}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;text-align:left;
  min-height:58px;padding:16px 20px;background:transparent;border:0;
}
.faq-num{font-size:13px;font-weight:700;color:var(--amber);font-variant-numeric:tabular-nums;min-width:26px}
.faq-text{flex:1;font-size:15.5px;font-weight:600;color:var(--text);line-height:1.55}
.faq-icon{color:var(--text-3);font-size:14px;transition:transform .24s var(--ease),color .24s var(--ease)}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--amber)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-item.open .faq-a{max-height:340px}
.faq-a p{padding:0 20px 20px 60px;color:var(--text-2);font-size:14.8px}

/* ===== CTA ===== */
.cta-card{
  position:relative;border-radius:26px;padding:30px 24px;
  background-color:var(--ink-800);border:1px solid rgba(124,59,255,.35);
  overflow:hidden;
}
@media(min-width:1024px){.cta-card{padding:44px 40px}}
.cta-card::after{
  content:"";position:absolute;right:-80px;top:-90px;width:320px;height:320px;pointer-events:none;
  background:radial-gradient(closest-side, rgba(255,77,109,.24), transparent 72%);
}
.cta-inner{position:relative;display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:1024px){.cta-inner{grid-template-columns:1.1fr 1fr;align-items:center;gap:40px}}
.cta-inner h2{font-size:24px}
@media(min-width:1024px){.cta-inner h2{font-size:30px}}
.cta-inner p{margin-top:12px;color:var(--text-2);font-size:15.5px}
.form-row{display:flex;gap:12px;flex-wrap:wrap}
.field{
  flex:1 1 240px;height:48px;padding:0 16px;border-radius:12px;
  background-color:var(--ink-700);border:1px solid var(--line);color:var(--text);
  outline:none;transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.field::placeholder{color:var(--text-3)}
.field:focus{border-color:transparent;box-shadow:0 0 0 1px var(--brand-a),0 0 20px rgba(124,59,255,.35)}
.form-tip{margin-top:12px;font-size:13.5px;color:var(--mint);min-height:20px}

/* ===== 页脚 ===== */
.footer{background-color:var(--ink-800);border-top:1px solid var(--line);margin-top:56px;padding-top:48px;position:relative;z-index:1}
.footer-inner{
  max-width:1360px;margin:0 auto;padding:0 16px;
  display:grid;gap:32px;grid-template-columns:1fr;
}
@media(min-width:640px){.footer-inner{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-inner{grid-template-columns:1.5fr 1fr 1fr 1fr;padding:0 32px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer p{color:var(--text-3);font-size:14px;max-width:340px}
.footer h4{font-size:15px;margin-bottom:14px}
.footer li{margin-bottom:10px}
.footer li a{color:var(--text-2);font-size:14px;transition:color .2s var(--ease)}
.footer li a:hover{color:var(--text);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  max-width:1360px;margin:36px auto 0;padding:20px 16px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
@media(min-width:1024px){.footer-bottom{padding:20px 32px}}

/* roulang page: category2 */
:root{
  --ink-900:#0B0714;
  --ink-800:#140E22;
  --ink-700:#1D1533;
  --line:rgba(255,255,255,.08);
  --brand-a:#7C3BFF;
  --brand-b:#FF4D6D;
  --brand-c:#FFB35C;
  --amber:#FFC24B;
  --mint:#45E0C0;
  --text:#F6F3FF;
  --text-2:#B9B0D6;
  --text-3:#7C7396;
  --grad:linear-gradient(120deg,#7C3BFF 0%,#FF4D6D 52%,#FFB35C 100%);
  --shadow:0 18px 40px -20px rgba(0,0,0,.75);
  --r-card:20px;
  --r-pill:999px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  min-height:100vh;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(760px 540px at 6% -8%, rgba(124,59,255,.17), transparent 68%),
    radial-gradient(700px 520px at 98% 106%, rgba(255,77,109,.14), transparent 70%);
  background-attachment:fixed;
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;font-weight:800;letter-spacing:-.01em;line-height:1.28;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(124,59,255,.45);color:#fff;}
:focus-visible{outline:2px solid var(--brand-b);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:1360px;margin:0 auto;padding:0 28px;}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 侧栏 App Shell ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:240px;z-index:70;
  display:flex;flex-direction:column;gap:20px;
  padding:22px 16px 20px;
  background:var(--ink-800);
  border-right:1px solid var(--line);
  overflow-y:auto;
  scrollbar-width:thin;
}
.sidebar::-webkit-scrollbar{width:6px;}
.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:99px;}
.brand{display:flex;align-items:center;gap:10px;padding:6px 8px 14px;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  background:var(--grad);display:grid;place-items:center;
  color:#fff;font-size:17px;
  box-shadow:0 10px 24px -12px rgba(124,59,255,.9);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:.01em;white-space:nowrap;}
.side-block{
  background:var(--ink-700);
  border:1px solid var(--line);
  border-radius:16px;
  padding:12px 12px 8px;
}
.side-block h4{font-size:13px;color:var(--text-3);font-weight:600;letter-spacing:.06em;margin-bottom:8px;}
.mini-item{display:block;padding:7px 0;border-bottom:1px dashed rgba(255,255,255,.06);}
.mini-item:last-child{border-bottom:0;}
.mini-item b{display:block;font-size:13.5px;font-weight:600;color:var(--text-2);line-height:1.5;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;}
.mini-item span{font-size:11.5px;color:var(--text-3);}
.side-cta{
  margin-top:auto;
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:44px;border-radius:var(--r-pill);
  background:var(--grad);
  font-size:14.5px;font-weight:700;color:#fff;
  transition:filter .22s,transform .22s;
}
.side-cta:hover{filter:brightness(1.08);transform:translateX(1px);}
.side-nav{display:flex;flex-direction:column;gap:4px;}
.nav-item{
  position:relative;
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:14px;
  color:var(--text-2);font-size:15px;font-weight:600;
  transition:background .2s,color .2s,transform .2s;
}
.nav-item .nav-ico{width:22px;text-align:center;font-size:15px;color:var(--text-3);transition:color .2s;}
.nav-item:hover{background:rgba(255,255,255,.05);color:var(--text);transform:translateX(2px);}
.nav-item:hover .nav-ico{color:var(--brand-c);}
.nav-item.active{background:var(--ink-700);color:var(--text);}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:99px;background:var(--grad);
}
.nav-item.active .nav-ico{color:var(--brand-c);}
.nav-sep{height:1px;background:var(--line);margin:10px 6px;}

/* ============ 顶部栏（移动端） ============ */
.topbar{
  position:fixed;top:0;left:0;right:0;height:62px;z-index:80;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(11,7,20,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar .brand{padding:0;}
.drawer-btn{
  width:44px;height:44px;border-radius:14px;
  border:1px solid var(--line);background:var(--ink-700);
  display:grid;place-items:center;font-size:17px;color:var(--text);
}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:65;
  opacity:0;visibility:hidden;transition:opacity .25s;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* ============ 主内容壳 ============ */
.shell{padding-left:272px;padding-bottom:0;}
.section{padding:76px 0;}
.section-tight{padding:56px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:28px;position:relative;padding-left:16px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:99px;background:var(--grad);
}
.section-head p{color:var(--text-3);font-size:14.5px;margin-top:8px;max-width:640px;}
.text-link{font-size:14.5px;font-weight:600;color:var(--text-2);display:inline-flex;align-items:center;gap:6px;transition:color .2s;}
.text-link:hover{color:var(--brand-c);}

/* ============ 分类横幅 ============ */
.page-hero{position:relative;min-height:290px;overflow:hidden;border-bottom:1px solid var(--line);}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5;}
.hero-mask{position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,7,20,.72) 0%,rgba(11,7,20,.86) 46%,var(--ink-900) 100%);}
.hero-glow{position:absolute;inset:0;
  background:radial-gradient(520px 320px at 18% 82%, rgba(124,59,255,.28), transparent 70%),
             radial-gradient(460px 280px at 88% 10%, rgba(255,77,109,.2), transparent 72%);}
.page-hero .container{position:relative;z-index:2;padding-top:44px;padding-bottom:40px;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:18px;flex-wrap:wrap;}
.crumb a{color:var(--text-2);transition:color .2s;}
.crumb a:hover{color:var(--brand-c);}
.crumb em{font-style:normal;color:var(--text-3);}
.hero-copy h1{font-size:44px;}
.hero-sub{margin-top:14px;max-width:720px;color:var(--text-2);font-size:16.5px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.stat-pill{
  display:flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,194,75,.3);
  color:var(--amber);font-size:13.5px;font-weight:600;
}
.stat-pill.mint{border-color:rgba(69,224,192,.3);color:var(--mint);}
.stat-pill.violet{border-color:rgba(124,59,255,.42);color:#C9B4FF;}

/* ============ 筛选 + 列表 ============ */
.filter-layout{display:grid;grid-template-columns:242px 1fr;gap:28px;align-items:start;}
.filter-panel{
  position:sticky;top:24px;
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:20px 18px;
}
.filter-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.filter-head h3{font-size:15.5px;}
.reset-link{font-size:13px;color:var(--text-3);transition:color .2s;}
.reset-link:hover{color:var(--brand-c);}
.filter-group{padding:14px 0;border-top:1px solid var(--line);}
.filter-group:first-of-type{border-top:0;padding-top:4px;}
.filter-group h4{font-size:13px;color:var(--text-3);letter-spacing:.06em;font-weight:600;margin-bottom:10px;}
.check-row{display:flex;align-items:center;gap:10px;padding:6px 0;font-size:14.5px;color:var(--text-2);cursor:pointer;transition:color .2s;}
.check-row:hover{color:var(--text);}
.check-box{
  width:16px;height:16px;border-radius:5px;flex:0 0 16px;
  border:1px solid rgba(255,255,255,.22);background:var(--ink-700);
  display:grid;place-items:center;font-size:9px;color:transparent;transition:.2s;
}
.check-row input{position:absolute;opacity:0;width:0;height:0;}
.check-row input:checked + .check-box{background:var(--grad);border-color:transparent;color:#fff;}
.check-row input:checked ~ .check-text{color:var(--text);font-weight:600;}
.check-row:focus-within .check-box{outline:2px solid rgba(255,77,109,.6);outline-offset:2px;}
.filter-count{font-size:12.5px;color:var(--text-3);margin-left:auto;font-variant-numeric:tabular-nums;}

.list-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px;flex-wrap:wrap;}
.list-head h2{font-size:22px;}
.chip-row{display:flex;gap:8px;flex-wrap:wrap;}
.chip{
  padding:5px 12px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;
  background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--text-2);
}
.chip.on{background:rgba(124,59,255,.16);border-color:rgba(124,59,255,.5);color:#D5C6FF;}

.row-list{display:flex;flex-direction:column;gap:14px;}
.row-item{
  background:var(--ink-700);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow);
  transition:transform .24s cubic-bezier(.22,.8,.28,1),border-color .24s,box-shadow .24s;
  overflow:hidden;
}
.row-item:hover{transform:translateY(-4px);border-color:transparent;box-shadow:0 0 0 1px var(--brand-a),var(--shadow),0 22px 48px -18px rgba(124,59,255,.45);}
.row-link{display:grid;grid-template-columns:150px 1fr auto;gap:18px;align-items:center;padding:14px 18px 14px 14px;}
.row-thumb{position:relative;border-radius:14px;overflow:hidden;border:1px solid rgba(255,255,255,.1);}
.row-thumb img{width:150px;height:88px;object-fit:cover;background:var(--ink-800);}
.thumb-badge{
  position:absolute;left:8px;bottom:8px;
  padding:2px 9px;border-radius:var(--r-pill);
  font-size:11px;font-weight:700;letter-spacing:.02em;
  background:rgba(255,194,75,.16);border:1px solid rgba(255,194,75,.4);color:var(--amber);
  backdrop-filter:blur(6px);
}
.row-body h3{font-size:18px;}
.row-desc{color:var(--text-2);font-size:14.5px;margin-top:6px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;}
.row-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:10px;font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.row-meta .dot{width:3px;height:3px;border-radius:99px;background:var(--text-3);}
.row-side{display:flex;flex-direction:column;align-items:flex-end;gap:12px;padding-right:4px;}
.score{
  font-size:17px;font-weight:800;color:var(--amber);font-variant-numeric:tabular-nums;
  padding:3px 12px;border-radius:var(--r-pill);
  background:rgba(255,194,75,.12);border:1px solid rgba(255,194,75,.3);
}
.row-arrow{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-3);font-size:11px;transition:.22s;}
.row-item:hover .row-arrow{background:var(--grad);border-color:transparent;color:#fff;}

/* ============ 规格数据卡 ============ */
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.spec-card{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 20px;transition:.24s;
}
.spec-card:hover{border-color:transparent;box-shadow:0 0 0 1px var(--brand-a),0 22px 48px -18px rgba(124,59,255,.4);transform:translateY(-4px);}
.spec-ico{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:rgba(124,59,255,.14);border:1px solid rgba(124,59,255,.34);color:#C9B4FF;font-size:17px;margin-bottom:14px;
}
.spec-card h3{font-size:17.5px;margin-bottom:8px;}
.spec-card p{color:var(--text-2);font-size:14.5px;}
.spec-num{margin-top:14px;font-size:24px;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.spec-num small{font-size:12.5px;font-weight:600;color:var(--text-3);-webkit-text-fill-color:var(--text-3);margin-left:6px;}

/* ============ 场景卡 ============ */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.scene-card{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--ink-700);
  min-height:236px;display:flex;flex-direction:column;justify-content:flex-end;
  padding:18px;transition:.26s;
}
.scene-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5;transition:transform .4s cubic-bezier(.22,.8,.28,1);}
.scene-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,7,20,.15) 20%,rgba(11,7,20,.94) 100%);}
.scene-card:hover img{transform:scale(1.05);}
.scene-card:hover{border-color:transparent;box-shadow:0 0 0 1px var(--brand-b),0 22px 48px -18px rgba(255,77,109,.34);}
.scene-card > *{position:relative;z-index:2;}
.scene-card h3{font-size:17.5px;margin-bottom:6px;}
.scene-card p{color:var(--text-2);font-size:14px;}
.scene-tag{
  align-self:flex-start;margin-bottom:10px;padding:3px 10px;border-radius:var(--r-pill);
  font-size:11.5px;font-weight:700;color:var(--mint);
  background:rgba(69,224,192,.13);border:1px solid rgba(69,224,192,.32);
}

/* ============ 精选推荐 ============ */
.pick-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:18px;}
.pick-main{
  position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  background:var(--ink-700);min-height:380px;display:flex;align-items:flex-end;padding:26px;transition:.26s;
}
.pick-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.62;transition:transform .45s cubic-bezier(.22,.8,.28,1);}
.pick-main::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,7,20,.1) 30%,rgba(11,7,20,.95) 100%);}
.pick-main:hover img{transform:scale(1.04);}
.pick-main:hover{border-color:transparent;box-shadow:0 0 0 1px var(--brand-a),0 26px 52px -20px rgba(124,59,255,.5);}
.pick-main > *{position:relative;z-index:2;}
.pick-main h3{font-size:26px;margin:12px 0 10px;}
.pick-main p{color:var(--text-2);font-size:15px;max-width:560px;}
.pick-stack{display:flex;flex-direction:column;gap:18px;}
.pick-small{
  display:grid;grid-template-columns:112px 1fr;gap:14px;align-items:center;
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--r-card);padding:12px;transition:.24s;
}
.pick-small:hover{transform:translateY(-4px);border-color:transparent;box-shadow:0 0 0 1px var(--brand-a),0 20px 42px -18px rgba(124,59,255,.42);}
.pick-small img{width:112px;height:72px;object-fit:cover;border-radius:12px;border:1px solid rgba(255,255,255,.1);}
.pick-small h4{font-size:16.5px;margin-bottom:6px;}
.pick-small p{font-size:13.5px;color:var(--text-3);overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.tag-gold{
  display:inline-block;padding:2px 10px;border-radius:var(--r-pill);font-size:11.5px;font-weight:700;
  color:var(--amber);background:rgba(255,194,75,.13);border:1px solid rgba(255,194,75,.32);
}

/* ============ FAQ ============ */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);transition:background .24s;}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  padding:20px 6px;min-height:64px;color:var(--text);font-size:16.5px;font-weight:600;
  position:relative;transition:padding .24s;
}
.faq-item:hover{background:rgba(255,255,255,.02);}
.faq-index{font-size:13.5px;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;flex:0 0 30px;}
.faq-q span.qtext{flex:1;}
.faq-mark{width:26px;height:26px;flex:0 0 26px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--text-2);font-size:12px;transition:.24s;}
.faq-item.open{background:var(--ink-700);}
.faq-item.open .faq-q{padding-left:14px;}
.faq-item.open .faq-q::before{content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:99px;background:var(--grad);}
.faq-item.open .faq-mark{background:var(--grad);border-color:transparent;color:#fff;transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s cubic-bezier(.22,.8,.28,1);}
.faq-a-inner{padding:0 6px 22px 46px;color:var(--text-2);font-size:15px;}

/* ============ CTA ============ */
.cta-card{
  position:relative;border-radius:26px;padding:40px;overflow:hidden;
  background:var(--ink-800);
  border:1px solid transparent;
  background-image:linear-gradient(var(--ink-800),var(--ink-800)),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
}
.cta-card::after{content:"";position:absolute;inset:0;
  background:radial-gradient(560px 260px at 88% 8%, rgba(124,59,255,.22), transparent 70%);
  pointer-events:none;}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr 1fr;gap:32px;align-items:center;}
.cta-inner h2{font-size:28px;margin-bottom:12px;}
.cta-inner p{color:var(--text-2);font-size:15.5px;}
.cta-form{display:flex;gap:12px;}
.cta-form input{
  flex:1;height:50px;border-radius:14px;padding:0 18px;
  background:var(--ink-700);border:1px solid var(--line);color:var(--text);font-size:15px;
  transition:.22s;
}
.cta-form input::placeholder{color:var(--text-3);}
.cta-form input:focus{outline:none;border-color:transparent;
  box-shadow:0 0 0 1px var(--brand-a),0 0 0 4px rgba(124,59,255,.18);}
.btn-grad{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 28px;border-radius:var(--r-pill);
  background:var(--grad);color:#fff;font-size:15px;font-weight:700;
  transition:filter .22s,transform .22s;white-space:nowrap;
}
.btn-grad:hover{filter:brightness(1.08);transform:translateY(-1px);}
.btn-grad:active{transform:translateY(1px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:50px;padding:0 26px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--text-2);font-size:15px;font-weight:600;transition:.24s;
}
.btn-ghost:hover{border-color:transparent;box-shadow:0 0 0 1px var(--brand-a);color:var(--text);}
.form-note{font-size:12.5px;color:var(--text-3);margin-top:10px;}

/* ============ 页脚 ============ */
.footer{margin-top:20px;background:var(--ink-800);border-top:1px solid var(--line);}
.footer-inner{
  max-width:1360px;margin:0 auto;padding:56px 28px 32px;
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer p{color:var(--text-2);font-size:14.5px;max-width:340px;}
.footer h4{font-size:14px;color:var(--text);margin-bottom:14px;letter-spacing:.04em;}
.footer ul{display:flex;flex-direction:column;gap:10px;}
.footer ul a{color:var(--text-2);font-size:14.5px;transition:color .2s,text-underline-offset .2s;}
.footer ul a:hover{color:var(--text);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
.footer-bottom{
  max-width:1360px;margin:0 auto;padding:18px 28px 30px;
  border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  color:var(--text-3);font-size:13px;
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.in{animation:fadeUpIn .28s cubic-bezier(.22,.8,.28,1) forwards;}
@keyframes fadeUpIn{to{opacity:1;transform:none;}}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .spec-grid,.scene-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:1279px){
  .pick-grid{grid-template-columns:1fr;}
  .pick-main{min-height:320px;}
}
@media (max-width:1023px){
  .sidebar{width:72px;padding:18px 10px;}
  .brand-text,.nav-label,.side-block,.side-cta span{display:none;}
  .brand{justify-content:center;padding:4px 0 10px;}
  .nav-item{justify-content:center;padding:12px 0;}
  .nav-item.active::before{top:8px;bottom:8px;}
  .side-cta{width:44px;height:44px;margin:0 auto;padding:0;}
  .nav-item[data-tip]:hover::after{
    content:attr(data-tip);position:absolute;left:64px;top:50%;transform:translateY(-50%);
    background:var(--ink-700);border:1px solid var(--line);color:var(--text);
    padding:6px 12px;border-radius:10px;font-size:13px;white-space:nowrap;z-index:90;
  }
  .shell{padding-left:96px;}
  .hero-copy h1{font-size:36px;}
  .filter-layout{grid-template-columns:200px 1fr;}
  .row-link{grid-template-columns:120px 1fr auto;}
  .row-thumb img{width:120px;height:72px;}
  .cta-inner{grid-template-columns:1fr;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .shell{padding-left:0;padding-top:62px;}
  .sidebar{width:84vw;max-width:320px;padding:20px 16px;transform:translateX(-100%);transition:transform .28s cubic-bezier(.22,.8,.28,1);}
  .sidebar.open{transform:translateX(0);}
  .brand-text,.nav-label,.side-cta span{display:inline;}
  .side-block{display:block;}
  .nav-item{justify-content:flex-start;padding:12px 12px;}
  .nav-item[data-tip]:hover::after{display:none;}
  .side-cta{width:100%;height:46px;padding:0 16px;}
  .section{padding:52px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .section-head h2{font-size:22px;}
  .page-hero .container{padding-top:30px;padding-bottom:30px;}
  .hero-copy h1{font-size:30px;}
  .hero-sub{font-size:15.5px;}
  .filter-layout{grid-template-columns:1fr;}
  .filter-panel{position:static;}
  .row-link{grid-template-columns:1fr;gap:12px;padding:14px;}
  .row-thumb img{width:100%;height:180px;}
  .row-side{flex-direction:row;align-items:center;justify-content:space-between;width:100%;}
  .spec-grid,.scene-grid{grid-template-columns:1fr;}
  .pick-main{padding:20px;}
  .pick-main h3{font-size:21px;}
  .cta-card{padding:26px 20px;}
  .cta-inner h2{font-size:22px;}
  .cta-form{flex-direction:column;}
  .btn-grad,.btn-ghost{width:100%;}
  .faq-q{font-size:15.5px;gap:12px;}
  .faq-a-inner{padding-left:34px;}
  .footer-inner{grid-template-columns:1fr 1fr;gap:26px;padding:40px 18px 24px;}
  .footer-bottom{padding:16px 18px 26px;flex-direction:column;}
}
@media (max-width:520px){
  .footer-inner{grid-template-columns:1fr;}
}

/* roulang page: category3 */
:root{
  --ink-900:#0B0714;
  --ink-800:#140E22;
  --ink-700:#1D1533;
  --line:rgba(255,255,255,.08);
  --brand-a:#7C3BFF;
  --brand-b:#FF4D6D;
  --brand-c:#FFB35C;
  --amber:#FFC24B;
  --mint:#45E0C0;
  --text:#F6F3FF;
  --text-2:#B9B0D6;
  --text-3:#7C7396;
  --grad:linear-gradient(120deg,#7C3BFF 0%,#FF4D6D 52%,#FFB35C 100%);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:14px;
  --shadow:0 18px 40px -20px rgba(0,0,0,.75);
  --shadow-hover:0 22px 48px -18px rgba(124,59,255,.45);
  --ease:cubic-bezier(.22,.8,.28,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  color:var(--text);
  background-color:var(--ink-900);
  background-image:
    radial-gradient(780px 540px at 10% -8%, rgba(124,59,255,.16), transparent 62%),
    radial-gradient(700px 500px at 106% 16%, rgba(255,77,109,.13), transparent 60%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand-b);outline-offset:3px;border-radius:8px}
::selection{background:rgba(124,59,255,.45);color:#fff}

/* ---------- Sidebar ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:240px;z-index:60;
  background:var(--ink-800);border-right:1px solid var(--line);
  padding:22px 16px;display:flex;flex-direction:column;gap:20px;overflow-y:auto;
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 6px 14px;border-bottom:1px solid var(--line)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;color:#fff;
  box-shadow:0 12px 26px -14px rgba(124,59,255,.95);
}
.brand-text{font-size:16px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.nav-list{display:flex;flex-direction:column;gap:6px}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 14px;border-radius:var(--r-sm);color:var(--text-2);font-size:15px;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-item i{width:18px;text-align:center;font-size:15px}
.nav-item:hover{background:var(--ink-700);color:var(--text);transform:translateX(2px)}
.nav-item.active{background:var(--ink-700);color:var(--text);font-weight:600}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;background:var(--grad);
}
.side-card{background:var(--ink-700);border:1px solid var(--line);border-radius:18px;padding:14px 15px}
.side-card h3{font-size:13px;font-weight:600;color:var(--text-3);letter-spacing:.04em;margin-bottom:12px}
.side-card li+li{margin-top:11px}
.side-card a{display:block;font-size:13.5px;color:var(--text-2);line-height:1.6;transition:color .2s}
.side-card a:hover{color:var(--text)}
.side-time{display:block;font-size:12px;color:var(--text-3);margin-top:3px;font-variant-numeric:tabular-nums}
.side-foot{margin-top:auto}
.side-foot .btn{width:100%;padding:12px 18px;font-size:14.5px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;padding:13px 26px;border-radius:999px;
  transition:transform .2s var(--ease),filter .2s var(--ease),box-shadow .2s var(--ease),background .25s var(--ease);
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 16px 32px -18px rgba(124,59,255,.95)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn-ghost:hover{box-shadow:inset 0 0 0 1px var(--brand-a);border-color:transparent;color:#fff}

/* ---------- Topbar (mobile) ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;height:60px;z-index:70;display:none;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(20,14,34,.88);backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:border-color .25s,background .25s;
}
.topbar.scrolled{border-bottom-color:var(--line);background:rgba(11,7,20,.94)}
.topbar .brand{padding:0;border:0;gap:9px}
.topbar .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:11px;font-size:14px}
.topbar .brand-text{font-size:15px}
.drawer-btn{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);color:var(--text);
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;
  transition:background .2s,border-color .2s;
}
.drawer-btn:hover{background:var(--ink-700);box-shadow:inset 0 0 0 1px var(--brand-a);border-color:transparent}
.overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:75;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease);
}
.overlay.show{opacity:1;visibility:visible}

/* ---------- Layout ---------- */
.main{margin-left:240px;min-height:100vh;display:flex;flex-direction:column}
.wrap{width:100%;max-width:1360px;margin:0 auto;padding:0 32px}
.section{padding:56px 0;scroll-margin-top:24px}
.divider{height:1px;background:var(--line)}

/* ---------- Banner ---------- */
.banner{
  position:relative;margin-top:32px;border-radius:var(--r-lg);overflow:hidden;
  min-height:280px;display:flex;align-items:flex-end;padding:36px;
  border:1px solid var(--line);
}
.banner::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
}
.banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,7,20,.42) 0%,rgba(11,7,20,.92) 100%),
             radial-gradient(620px 320px at 18% 4%, rgba(124,59,255,.34), transparent 70%);
}
.banner-inner{position:relative;z-index:2;width:100%}
.crumbs{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--text-3);margin-bottom:14px}
.crumbs a{color:var(--text-2);transition:color .2s}
.crumbs a:hover{color:var(--text)}
.crumbs i{font-size:9px}
.banner h1{font-size:clamp(30px,4vw,46px);font-weight:800;letter-spacing:-.01em;line-height:1.25}
.banner-desc{max-width:760px;margin-top:14px;color:var(--text-2);font-size:15.5px;line-height:1.85}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:25px;padding:0 11px;border-radius:999px;
  font-size:12.5px;font-weight:600;font-variant-numeric:tabular-nums;white-space:nowrap;
}
.badge-amber{color:var(--amber);background:rgba(255,194,75,.12);border:1px solid rgba(255,194,75,.3)}
.badge-mint{color:var(--mint);background:rgba(69,224,192,.12);border:1px solid rgba(69,224,192,.3)}
.badge-brand{color:#fff;background:var(--grad);border:1px solid transparent}
.badge-plain{color:var(--text-2);background:rgba(255,255,255,.05);border:1px solid var(--line)}

/* ---------- Section head ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:24px}
.sec-title{position:relative;padding-left:17px;font-size:27px;font-weight:800;letter-spacing:-.01em;line-height:1.35}
.sec-title::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:4px;background:var(--grad);
}
.sec-sub{margin-top:8px;padding-left:17px;color:var(--text-3);font-size:14px;line-height:1.7}
.sec-link{
  display:inline-flex;align-items:center;gap:7px;font-size:14px;color:var(--text-2);
  white-space:nowrap;transition:color .2s,gap .2s;
}
.sec-link:hover{color:var(--text);gap:11px}

/* ---------- Cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.card{
  display:flex;flex-direction:column;overflow:hidden;background:var(--ink-700);
  border:1px solid var(--line);border-radius:var(--r-md);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(124,59,255,.55)}
.card-cover{position:relative;display:block;aspect-ratio:16/9;overflow:hidden;background:var(--ink-800)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-cover img{transform:scale(1.03)}
.card-cover::after{content:"";position:absolute;inset:0;border-bottom:1px solid rgba(255,255,255,.08)}
.card-tag{
  position:absolute;top:10px;left:10px;z-index:2;padding:4px 10px;border-radius:999px;font-size:12px;
  color:var(--text-2);background:rgba(11,7,20,.72);border:1px solid rgba(255,255,255,.12);
  backdrop-filter:blur(6px);
}
.card-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:9px;flex:1}
.card-title{font-size:17.5px;font-weight:700;line-height:1.5;letter-spacing:-.01em}
.card-title a{transition:color .2s}
.card:hover .card-title a{color:#fff}
.card-desc{font-size:13.5px;color:var(--text-2);line-height:1.75}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:10px;max-width:960px}
.faq-item{
  background:var(--ink-800);border:1px solid var(--line);border-radius:16px;overflow:hidden;
  transition:background .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item.open{background:var(--ink-700);border-color:rgba(124,59,255,.42);box-shadow:inset 3px 0 0 0 var(--brand-a)}
.faq-q{display:flex;align-items:center;gap:14px;width:100%;min-height:56px;padding:18px 20px;text-align:left}
.faq-num{
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;flex:0 0 auto;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.faq-text{flex:1;font-size:16px;font-weight:600;line-height:1.6}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;font-size:11px;color:var(--text-2);
  transition:transform .25s var(--ease),background .25s var(--ease),color .25s var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--grad);color:#fff;border-color:transparent}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a-inner{padding:0 22px 20px 56px;color:var(--text-2);font-size:15px;line-height:1.85}

/* ---------- CTA ---------- */
.cta-card{
  display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center;
  padding:42px;border-radius:var(--r-lg);border:1px solid transparent;
  background-image:linear-gradient(var(--ink-800),var(--ink-800)),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
}
.cta-card h2{font-size:26px;font-weight:800;letter-spacing:-.01em;line-height:1.4}
.cta-card p{margin-top:12px;color:var(--text-2);font-size:15px;line-height:1.85}
.field{display:flex;gap:12px}
.field input{
  flex:1;height:48px;padding:0 16px;border-radius:12px;background:var(--ink-700);
  border:1px solid var(--line);color:var(--text);font-size:15px;outline:none;
  transition:border-color .2s,box-shadow .2s;
}
.field input::placeholder{color:var(--text-3)}
.field input:focus{border-color:transparent;box-shadow:0 0 0 1px var(--brand-a),0 0 0 4px rgba(124,59,255,.18)}
.form-note{margin-top:12px;font-size:13px;color:var(--text-3)}
.form-state{margin-top:10px;font-size:13.5px;color:var(--mint);min-height:20px}

/* ---------- Footer ---------- */
.footer{margin-top:80px;background:var(--ink-800);border-top:1px solid var(--line);padding:56px 0 26px}
.footer-inner{
  max-width:1360px;margin:0 auto;padding:0 32px;
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:11px;font-size:14px}
.footer h4{font-size:15px;font-weight:700;margin-bottom:14px}
.footer p{color:var(--text-2);font-size:14px;line-height:1.85;max-width:340px}
.footer li+li{margin-top:10px}
.footer a{color:var(--text-2);font-size:14.5px;transition:color .2s,text-underline-offset .2s}
.footer a:hover{color:var(--text);text-decoration:underline;text-underline-offset:3px}
.footer-bottom{
  max-width:1360px;margin:36px auto 0;padding:20px 32px 0;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  color:var(--text-3);font-size:13px;
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.in{opacity:1;transform:none;transition:opacity .5s var(--ease),transform .5s var(--ease)}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
  .card:hover{transform:none}
  .card:hover .card-cover img{transform:none}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

/* ---------- Tablet ---------- */
@media (max-width:1023px) and (min-width:768px){
  .sidebar{width:72px;padding:20px 10px;align-items:center;gap:14px}
  .brand{justify-content:center;padding:4px 0 12px}
  .brand-text{display:none}
  .nav-item{justify-content:center;padding:12px 0}
  .nav-label{display:none}
  .side-card{display:none}
  .side-foot .btn{padding:12px 0;font-size:0}
  .side-foot .btn i{font-size:16px}
  .main{margin-left:72px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sec-title{font-size:24px}
  .cta-card{grid-template-columns:1fr;padding:34px}
  .footer-inner{grid-template-columns:1fr 1fr}
}

/* ---------- Mobile ---------- */
@media (max-width:767px){
  body{font-size:16px}
  .sidebar{
    width:84vw;max-width:320px;z-index:80;align-items:stretch;gap:16px;
    transform:translateX(-100%);transition:transform .3s var(--ease);
  }
  .sidebar.open{transform:translateX(0)}
  .brand{justify-content:flex-start;padding:6px 6px 14px}
  .brand-text{display:inline}
  .nav-item{justify-content:flex-start;padding:12px 14px}
  .nav-label{display:inline}
  .side-card{display:block}
  .topbar{display:flex}
  .main{margin-left:0;padding-top:60px}
  .wrap{padding:0 18px}
  .banner{margin-top:18px;min-height:240px;padding:22px;border-radius:20px}
  .banner-desc{font-size:14.5px}
  .section{padding:44px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
  .sec-title{font-size:22px}
  .sec-sub{font-size:13.5px}
  .card-grid{grid-template-columns:1fr;gap:18px}
  .faq-text{font-size:15px}
  .faq-a-inner{padding:0 18px 18px 20px;font-size:14.5px}
  .cta-card{padding:26px 22px;gap:24px;grid-template-columns:1fr}
  .cta-card h2{font-size:22px}
  .field{flex-direction:column}
  .field .btn{width:100%}
  .footer{padding-top:44px}
  .footer-inner{grid-template-columns:1fr;padding:0 18px;gap:28px}
  .footer-bottom{padding:18px 18px 0;flex-direction:column;gap:8px}
}

/* roulang page: category4 */
:root{
    --ink-900:#0B0714;
    --ink-800:#140E22;
    --ink-700:#1D1533;
    --line:rgba(255,255,255,.08);
    --brand-a:#7C3BFF;
    --brand-b:#FF4D6D;
    --brand-c:#FFB35C;
    --amber:#FFC24B;
    --mint:#45E0C0;
    --text:#F6F3FF;
    --text-2:#B9B0D6;
    --text-3:#7C7396;
    --grad:linear-gradient(120deg,#7C3BFF 0%,#FF4D6D 52%,#FFB35C 100%);
    --radius-card:22px;
    --radius-cover:16px;
    --shadow:0 18px 40px -20px rgba(0,0,0,.75);
    --glow:0 22px 48px -18px rgba(124,59,255,.45);
    --ease:cubic-bezier(.22,.8,.28,1);
    --sidebar-w:240px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    min-height:100vh;
    background:var(--ink-900);
    color:var(--text);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16.5px;
    line-height:1.85;
    letter-spacing:-.01em;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background:
      radial-gradient(620px 430px at 6% 3%,rgba(124,59,255,.16),transparent 62%),
      radial-gradient(700px 500px at 97% 90%,rgba(255,77,109,.13),transparent 64%);
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none}
  button,input{font:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4{margin:0;font-weight:750;letter-spacing:-.02em;line-height:1.25}
  p{margin:0}
  strong{font-weight:700}
  :focus-visible{outline:2px solid var(--brand-b);outline-offset:3px;border-radius:8px}

  .skip{
    position:absolute;left:-9999px;top:0;z-index:200;
    background:var(--ink-700);color:var(--text);padding:12px 18px;border-radius:0 0 14px 0;font-size:14px;
  }
  .skip:focus{left:0}

  .wrap{width:100%;max-width:1360px;margin:0 auto;padding:0 clamp(18px,4vw,32px)}

  /* ---------- 顶部栏（移动端） ---------- */
  .topbar{
    position:fixed;top:0;left:0;right:0;height:64px;z-index:60;
    display:flex;align-items:center;justify-content:space-between;
    padding:0 16px;background:rgba(11,7,20,.72);
    border-bottom:1px solid transparent;
    transition:background .28s var(--ease),border-color .28s var(--ease),backdrop-filter .28s var(--ease);
  }
  .topbar.solid{background:rgba(11,7,20,.92);border-bottom-color:var(--line);backdrop-filter:blur(14px)}
  .brand{display:flex;align-items:center;gap:10px;padding:6px;border-radius:14px}
  .brand-mark{
    width:38px;height:38px;flex:0 0 38px;border-radius:12px;
    background:var(--grad);display:grid;place-items:center;
    color:#170B24;font-size:17px;
    box-shadow:0 10px 24px -12px rgba(124,59,255,.85);
  }
  .brand-text{font-size:17px;font-weight:750;letter-spacing:-.02em;white-space:nowrap}
  .drawer-btn{
    width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
    background:var(--ink-700);border:1px solid var(--line);color:var(--text-2);
    cursor:pointer;transition:color .2s var(--ease),border-color .2s var(--ease);
  }
  .drawer-btn:hover{color:var(--text);border-color:rgba(124,59,255,.5)}

  /* ---------- 侧边导航 ---------- */
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;width:84vw;max-width:340px;z-index:80;
    background:var(--ink-800);border-right:1px solid var(--line);
    display:flex;flex-direction:column;gap:18px;
    padding:18px 16px 22px;overflow-y:auto;
    transform:translateX(-102%);
    transition:transform .3s var(--ease);
  }
  .sidebar.open{transform:none}
  .sidebar-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
  .drawer-close{
    width:44px;height:44px;flex:0 0 44px;border-radius:13px;display:grid;place-items:center;
    background:var(--ink-700);border:1px solid var(--line);color:var(--text-2);cursor:pointer;
  }
  .drawer-close:hover{color:var(--text)}
  .side-nav{display:flex;flex-direction:column;gap:6px}
  .side-link{
    position:relative;display:flex;align-items:center;gap:12px;
    padding:11px 14px;border-radius:14px;color:var(--text-2);
    font-size:15px;font-weight:600;
    transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
  }
  .side-link i{width:20px;text-align:center;font-size:15px}
  .side-link:hover{background:rgba(255,255,255,.04);color:var(--text)}
  .side-link.active{background:var(--ink-700);color:var(--text)}
  .side-link.active::before{
    content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--grad);
  }
  .side-latest{
    margin-top:6px;padding:16px;border-radius:18px;
    background:var(--ink-700);border:1px solid var(--line);
  }
  .side-latest h3{
    display:flex;align-items:center;justify-content:space-between;
    font-size:13.5px;font-weight:700;color:var(--text-2);letter-spacing:.04em;margin-bottom:12px;
  }
  .side-latest h3 i{color:var(--brand-c)}
  .side-latest ul{display:flex;flex-direction:column;gap:12px}
  .side-latest li a{display:block;font-size:14px;color:var(--text);line-height:1.6}
  .side-latest li a:hover{color:var(--brand-c)}
  .side-latest em{display:block;font-style:normal;font-size:12.5px;color:var(--text-3);margin-top:3px;font-variant-numeric:tabular-nums}
  .side-foot{margin-top:auto;padding-top:6px}
  .scrim{
    position:fixed;inset:0;z-index:70;background:rgba(0,0,0,.6);
    opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);
  }
  .scrim.on{opacity:1;visibility:visible}

  /* ---------- 主区域 ---------- */
  .main{position:relative;z-index:1;margin-left:0;padding-top:64px}
  @media (min-width:768px) and (max-width:1023px){
    .topbar{display:none}
    .sidebar{width:72px;max-width:none;transform:none;padding:20px 10px;align-items:center;overflow:visible}
    .sidebar .brand-text,
    .sidebar .side-latest,
    .sidebar .side-foot,
    .sidebar .side-label,
    .sidebar .drawer-close{display:none}
    .sidebar-head{justify-content:center}
    .side-nav{width:100%;align-items:center}
    .side-link{justify-content:center;padding:12px;width:100%}
    .side-link:hover .side-label,
    .side-link:focus-visible .side-label{
      display:block;position:absolute;left:calc(100% + 14px);top:50%;transform:translateY(-50%);
      background:var(--ink-700);border:1px solid var(--line);border-radius:10px;
      padding:6px 12px;font-size:13px;white-space:nowrap;color:var(--text);box-shadow:var(--shadow);z-index:95;
    }
    .scrim{display:none}
    .main{margin-left:72px;padding-top:0}
  }
  @media (min-width:1024px){
    .topbar{display:none}
    .scrim{display:none}
    .sidebar{
      width:var(--sidebar-w);max-width:none;transform:none;
      padding:24px 18px;overflow-y:auto;
    }
    .sidebar .drawer-close{display:none}
    .main{margin-left:var(--sidebar-w);padding-top:0}
  }

  /* ---------- Hero ---------- */
  .page-hero{
    position:relative;isolation:isolate;overflow:hidden;
    min-height:282px;display:flex;align-items:flex-end;
  }
  .page-hero .hero-bg{
    position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;
  }
  .hero-shade{
    position:absolute;inset:0;z-index:-1;
    background:
      linear-gradient(180deg,rgba(11,7,20,.62) 0%,rgba(11,7,20,.86) 46%,var(--ink-900) 100%),
      radial-gradient(540px 340px at 10% 18%,rgba(124,59,255,.3),transparent 66%),
      radial-gradient(420px 300px at 92% 82%,rgba(255,179,92,.16),transparent 68%);
  }
  .hero-inner{padding-top:38px;padding-bottom:40px}
  .crumbs{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:14px}
  .crumbs a{color:var(--text-2);transition:color .2s var(--ease)}
  .crumbs a:hover{color:var(--text)}
  .crumbs i{font-size:10px;color:var(--text-3)}
  .page-hero h1{font-size:clamp(30px,5vw,46px);line-height:1.15}
  .hero-sub{margin-top:14px;max-width:660px;color:var(--text-2);font-size:clamp(15px,1.4vw,17px)}
  .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}

  /* ---------- 板块 ---------- */
  .section{padding:clamp(48px,6vw,80px) 0;position:relative;z-index:1}
  .section-alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:22px;margin-bottom:34px;flex-wrap:wrap}
  .sec-title{position:relative;padding-left:14px;font-size:clamp(22px,2.4vw,29px)}
  .sec-title::before{
    content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:4px;background:var(--grad);
  }
  .sec-sub{margin-top:10px;color:var(--text-2);font-size:15px;max-width:740px}
  .sec-more{
    display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2);
    transition:color .2s var(--ease),gap .2s var(--ease);white-space:nowrap;
  }
  .sec-more:hover{color:var(--text);gap:12px}

  /* ---------- 通用卡片 / 徽章 / 按钮 ---------- */
  .card{
    background:var(--ink-700);border:1px solid var(--line);border-radius:var(--radius-card);
    transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
  }
  .card:hover{transform:translateY(-4px);border-color:rgba(124,59,255,.5);box-shadow:var(--glow)}

  .badge{
    display:inline-flex;align-items:center;gap:6px;height:25px;padding:0 11px;
    border-radius:999px;font-size:12.5px;font-weight:600;line-height:1;
    font-variant-numeric:tabular-nums;white-space:nowrap;
  }
  .badge i{font-size:11px}
  .badge-amber{color:var(--amber);background:rgba(255,194,75,.12);border:1px solid rgba(255,194,75,.3)}
  .badge-mint{color:var(--mint);background:rgba(69,224,192,.12);border:1px solid rgba(69,224,192,.3)}
  .badge-brand{
    color:#F0E8FF;
    background:linear-gradient(120deg,rgba(124,59,255,.24),rgba(255,77,109,.18));
    border:1px solid rgba(255,179,92,.34);
  }

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:600;padding:14px 28px;border-radius:999px;
    border:1px solid transparent;cursor:pointer;
    transition:transform .24s var(--ease),box-shadow .24s var(--ease),filter .24s var(--ease),background .24s var(--ease),color .24s var(--ease);
  }
  .btn-primary{background:var(--grad);color:#180A26;box-shadow:0 14px 32px -16px rgba(124,59,255,.8)}
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 18px 38px -14px rgba(255,77,109,.6)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-ghost{
    background:linear-gradient(var(--ink-900),var(--ink-900)) padding-box,var(--line) border-box;
    border:1px solid transparent;color:var(--text-2);
  }
  .btn-ghost:hover{
    color:var(--text);
    background:linear-gradient(var(--ink-700),var(--ink-700)) padding-box,var(--grad) border-box;
  }
  .btn-sm{padding:11px 20px;font-size:14px}

  /* ---------- 网格 ---------- */
  .grid-3{display:grid;gap:20px;grid-template-columns:repeat(3,minmax(0,1fr))}
  @media (max-width:1023px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (max-width:640px){.grid-3{grid-template-columns:1fr}}

  .feat-card{padding:26px}
  .feat-icon{
    width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
    background:rgba(124,59,255,.16);border:1px solid rgba(124,59,255,.4);
    color:#DCCBFF;font-size:18px;margin-bottom:18px;
  }
  .feat-card h3{font-size:18px;margin-bottom:10px}
  .feat-card p{color:var(--text-2);font-size:15px}

  /* ---------- 排行区 ---------- */
  .rank-grid{display:grid;gap:30px;grid-template-columns:minmax(0,1.62fr) minmax(0,1fr);align-items:start}
  .rank-list{display:flex;flex-direction:column;gap:10px}
  .rank-row{
    display:grid;grid-template-columns:58px minmax(0,1fr) auto 22px;align-items:center;gap:14px;
    padding:14px 20px;border-radius:18px;background:var(--ink-700);border:1px solid var(--line);
    transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  }
  .rank-row:hover{transform:translateY(-3px);border-color:rgba(124,59,255,.5);box-shadow:var(--glow)}
  .rank-no{
    font-size:26px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;
    background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .rank-main strong{display:block;font-size:17px}
  .rank-main em{display:block;font-style:normal;font-size:13.5px;color:var(--text-3);margin-top:4px}
  .rank-arrow{color:var(--text-3);font-size:13px;transition:color .24s var(--ease),transform .24s var(--ease)}
  .rank-row:hover .rank-arrow{color:var(--brand-c);transform:translateX(3px)}
  @media (max-width:1023px){
    .rank-grid{grid-template-columns:1fr}
    .rank-side{order:-1;position:static}
  }
  @media (max-width:560px){
    .rank-row{grid-template-columns:46px minmax(0,1fr) auto;gap:12px;padding:13px 16px}
    .rank-no{font-size:22px}
    .rank-arrow{display:none}
    .rank-main em{font-size:13px}
  }

  .rank-side{position:sticky;top:24px}
  .pick-card{padding:18px}
  .pick-cover{
    position:relative;border-radius:var(--radius-cover);overflow:hidden;
    border:1px solid rgba(255,255,255,.12);aspect-ratio:16/9;background:var(--ink-800);
  }
  .pick-cover img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
  .pick-card:hover .pick-cover img{transform:scale(1.03)}
  .pick-body{padding:18px 4px 4px}
  .pick-body h3{font-size:19px;margin:12px 0 10px}
  .pick-body p{color:var(--text-2);font-size:14.5px}
  .pick-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
  .pick-body .btn{width:100%;margin-top:18px}

  /* ---------- 场景图文 ---------- */
  .scene-grid{display:grid;gap:22px;grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-card{overflow:hidden;padding:0}
  .scene-card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:var(--ink-800)}
  .scene-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
  .scene-card:hover figure img{transform:scale(1.03)}
  .scene-body{padding:22px 24px 26px}
  .scene-body h3{font-size:18px;margin-bottom:10px}
  .scene-body p{color:var(--text-2);font-size:15px}
  @media (max-width:768px){.scene-grid{grid-template-columns:1fr}}

  /* ---------- 流程步骤 ---------- */
  .steps{display:grid;gap:18px;grid-template-columns:repeat(4,minmax(0,1fr))}
  .step{padding:24px;border-radius:20px;background:var(--ink-700);border:1px solid var(--line);transition:border-color .24s var(--ease),transform .24s var(--ease)}
  .step:hover{transform:translateY(-4px);border-color:rgba(255,179,92,.45)}
  .step-no{font-size:13px;font-weight:800;letter-spacing:.14em;color:var(--brand-c);font-variant-numeric:tabular-nums}
  .step h3{font-size:17px;margin:10px 0 8px}
  .step p{color:var(--text-2);font-size:14.5px}
  @media (max-width:1023px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (max-width:520px){.steps{grid-template-columns:1fr}}

  /* ---------- 数据与口碑 ---------- */
  .stats{display:grid;gap:18px;grid-template-columns:repeat(4,minmax(0,1fr))}
  .stat{padding:24px;border-radius:20px;background:var(--ink-700);border:1px solid var(--line)}
  .stat b{
    display:block;font-size:34px;font-weight:800;line-height:1.1;letter-spacing:-.02em;
    font-variant-numeric:tabular-nums;
    background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .stat span{display:block;margin-top:8px;font-size:14.5px;color:var(--text-2)}
  @media (max-width:900px){.stats{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (max-width:480px){.stats{grid-template-columns:1fr}}

  .quote-grid{display:grid;gap:18px;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:22px}
  .quote{position:relative;padding:26px 26px 26px 30px;border-radius:20px;background:var(--ink-700);border:1px solid var(--line)}
  .quote::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:3px;background:var(--grad)}
  .quote p{color:var(--text);font-size:15.5px}
  .quote cite{display:block;margin-top:14px;font-style:normal;font-size:13.5px;color:var(--text-3)}
  @media (max-width:768px){.quote-grid{grid-template-columns:1fr}}

  /* ---------- FAQ ---------- */
  .faq{display:flex;flex-direction:column;gap:12px;max-width:940px}
  .faq-item{
    position:relative;overflow:hidden;border-radius:18px;
    background:var(--ink-700);border:1px solid var(--line);
    transition:border-color .24s var(--ease),background .24s var(--ease);
  }
  .faq-item:hover{border-color:rgba(124,59,255,.35)}
  .faq-item[open]{border-color:rgba(124,59,255,.45)}
  .faq-item[open]::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad)}
  .faq-item summary{
    display:flex;align-items:center;gap:14px;min-height:56px;
    padding:16px 22px;cursor:pointer;list-style:none;font-size:16px;font-weight:650;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-no{font-size:14px;font-weight:800;color:var(--brand-c);font-variant-numeric:tabular-nums;flex:0 0 auto}
  .faq-item summary::after{
    content:"+";margin-left:auto;font-size:20px;line-height:1;color:var(--text-3);
    transition:color .22s var(--ease),transform .22s var(--ease);
  }
  .faq-item[open] summary::after{content:"–";color:var(--brand-c);transform:rotate(180deg)}
  .faq-body{padding:0 22px 22px 50px;color:var(--text-2);font-size:15px}
  @media (max-width:560px){.faq-body{padding:0 18px 20px 18px}}
  @media (max-width:560px){.faq-item summary{padding:15px 18px;font-size:15.5px}}

  /* ---------- CTA ---------- */
  .cta-card{
    display:grid;gap:28px;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);align-items:center;
    padding:clamp(26px,4vw,40px);border-radius:26px;
    background:linear-gradient(var(--ink-800),var(--ink-800)) padding-box,var(--grad) border-box;
    border:1px solid transparent;
  }
  .cta-card h2{font-size:clamp(22px,2.4vw,28px)}
  .cta-card .cta-copy p{color:var(--text-2);font-size:15px;margin-top:12px;max-width:520px}
  .form-row{display:flex;gap:12px}
  .input{
    height:48px;flex:1;min-width:0;border-radius:12px;padding:0 16px;font-size:15px;
    background:var(--ink-700);border:1px solid var(--line);color:var(--text);
    transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
  }
  .input::placeholder{color:var(--text-3)}
  .input:focus{
    outline:none;border-color:transparent;
    background:linear-gradient(var(--ink-700),var(--ink-700)) padding-box,var(--grad) border-box;
    box-shadow:0 0 0 4px rgba(124,59,255,.18);
  }
  .form-tip{margin-top:12px;font-size:13.5px;color:var(--text-3);min-height:22px}
  .form-note{margin-top:6px;font-size:13px;color:var(--text-3)}
  @media (max-width:900px){.cta-card{grid-template-columns:1fr}}
  @media (max-width:560px){.form-row{flex-direction:column}.form-row .btn{width:100%}}

  /* ---------- 页脚 ---------- */
  .footer{position:relative;z-index:1;background:var(--ink-800);border-top:1px solid var(--line);margin-top:12px}
  .footer-inner{
    max-width:1360px;margin:0 auto;padding:56px clamp(18px,4vw,32px) 34px;
    display:grid;gap:32px;grid-template-columns:1.7fr 1fr 1fr 1fr;
  }
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
  .footer h4{font-size:15px;margin-bottom:16px}
  .footer p{color:var(--text-2);font-size:14.5px;max-width:340px}
  .footer ul{display:flex;flex-direction:column;gap:11px}
  .footer ul a{color:var(--text-2);font-size:14.5px;transition:color .2s var(--ease)}
  .footer ul a:hover{color:var(--text);text-decoration:underline;text-underline-offset:3px}
  .footer-bottom{
    max-width:1360px;margin:0 auto;padding:18px clamp(18px,4vw,32px) 26px;
    border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13.5px;color:var(--text-3);
  }
  @media (max-width:1023px){.footer-inner{grid-template-columns:1fr 1fr}}
  @media (max-width:540px){.footer-inner{grid-template-columns:1fr;gap:28px}}

  /* ---------- 动效 ---------- */
  .reveal{opacity:0;transform:translateY(12px);transition:opacity .28s var(--ease),transform .28s var(--ease)}
  .reveal.in{opacity:1;transform:none}
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    .reveal{opacity:1;transform:none}
    html{scroll-behavior:auto}
  }