/* roulang page: index */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --glass:rgba(255,255,255,.06);
  --glass-bd:rgba(255,255,255,.12);
  --brand:#35E0FF;
  --brand-2:#2C7BFF;
  --accent:#FFC24B;
  --accent-2:#7C5CFF;
  --ink-1:#EAF2FF;
  --ink-2:#A8B8D4;
  --ink-3:#6C7E9E;
  --ok:#2ED47A;
  --danger:#FF6B6B;
  --r-s:10px;
  --r-m:16px;
  --r-l:22px;
  --r-pill:999px;
  --sh-1:0 2px 10px rgba(0,0,0,.35);
  --sh-2:0 18px 50px -20px rgba(0,0,0,.7);
  --sidebar-w:248px;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::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","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.7;
  color:var(--ink-1);
  background:var(--bg-1);
  min-height:100vh;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(760px 520px at 12% -6%, rgba(53,224,255,.10), transparent 62%),
    radial-gradient(680px 480px at 88% 4%, rgba(124,92,255,.10), transparent 60%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:#7BEBFF}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.2px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:6px}
::selection{background:rgba(53,224,255,.3)}

.shell{position:relative;z-index:1;padding-left:var(--sidebar-w)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:104px 0;position:relative}
.section--tight{padding:72px 0}
.section-head{max-width:720px;margin-bottom:40px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;letter-spacing:.16em;color:var(--brand);
  text-transform:uppercase;margin-bottom:14px;font-weight:600;
}
.section-head .eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);display:block}
.section-head h2{font-size:30px;line-height:1.35;margin-bottom:12px}
.section-head p{color:var(--ink-2);font-size:15.5px}
.divider{height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.13),transparent)}

/* ============ 侧边导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  z-index:60;
  display:flex;flex-direction:column;
  gap:18px;
  padding:22px 16px 20px;
  background:linear-gradient(180deg,rgba(16,26,46,.96),rgba(10,17,32,.98));
  border-right:1px solid var(--glass-bd);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.sidebar::-webkit-scrollbar{width:0;height:0}
.brand{display:flex;align-items:center;gap:12px;padding:6px 8px 14px;border-bottom:1px solid var(--glass-bd)}
.brand-mark{
  width:42px;height:42px;flex:none;border-radius:14px;
  background:linear-gradient(140deg,var(--brand),var(--brand-2) 55%,var(--accent-2));
  display:grid;place-items:center;
  box-shadow:0 0 26px -6px rgba(53,224,255,.65);
}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:#04121B;stroke-width:1.9;stroke-linecap:round}
.brand-text strong{display:block;font-size:15px;line-height:1.3;letter-spacing:.4px;color:var(--ink-1)}
.brand-text span{display:block;font-size:12px;color:var(--ink-3);letter-spacing:.08em}
.side-nav{display:flex;flex-direction:column;gap:6px;overflow-y:auto;flex:1;padding-right:2px}
.side-nav::-webkit-scrollbar{width:0}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:var(--r-m);
  color:var(--ink-2);font-size:14.5px;font-weight:500;
  border:1px solid transparent;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  white-space:nowrap;
}
.side-link svg{width:19px;height:19px;flex:none;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.side-link:hover{background:rgba(255,255,255,.055);color:var(--ink-1)}
.side-link.is-active{
  color:var(--ink-1);
  background:var(--glass);
  border-color:var(--glass-bd);
}
.side-link.is-active::before{
  content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 4px 4px 0;
  background:var(--brand);box-shadow:0 0 14px 1px rgba(53,224,255,.85);
}
.side-foot{display:flex;flex-direction:column;gap:12px;padding-top:14px;border-top:1px solid var(--glass-bd)}
.support-card{
  background:var(--glass);border:1px solid var(--glass-bd);
  border-radius:var(--r-m);padding:12px 14px;font-size:12.5px;color:var(--ink-3);line-height:1.6;
}
.support-card b{display:block;color:var(--ink-2);font-size:13px;margin-bottom:4px;font-weight:600}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease),background .18s var(--ease);
  text-align:center;
}
.btn svg{width:17px;height:17px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{
  color:#04121B;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));
  border-color:rgba(255,255,255,.35);
  box-shadow:0 10px 30px -12px rgba(53,224,255,.9);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 14px 36px -10px rgba(53,224,255,1);color:#04121B}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 18px -10px rgba(53,224,255,.8)}
.btn-ghost{
  color:var(--ink-1);background:var(--glass);border-color:var(--glass-bd);
}
.btn-ghost:hover{background:rgba(255,255,255,.11);transform:translateY(-1px);color:#fff}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:13.5px}
.btn-block{width:100%}
.btn-glow{
  box-shadow:0 0 0 1px rgba(53,224,255,.35),0 14px 40px -14px rgba(53,224,255,.95);
}

/* ============ Hero ============ */
.hero{
  position:relative;
  padding:112px 0 88px;
  overflow:hidden;
  border-bottom:1px solid var(--glass-bd);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.5;
  z-index:0;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(5,8,15,.94) 6%,rgba(10,17,32,.86) 46%,rgba(10,17,32,.66) 100%);
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(53,224,255,.1);border:1px solid rgba(53,224,255,.32);
  color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.04em;margin-bottom:22px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px 2px rgba(53,224,255,.9);display:block}
.hero h1{
  font-size:44px;line-height:1.22;letter-spacing:-.4px;margin-bottom:18px;
  background:linear-gradient(96deg,#FFFFFF 18%,#9ADFFF 62%,var(--brand) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{color:var(--ink-2);font-size:17px;max-width:560px;margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px}
.trust-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
  padding-top:26px;border-top:1px solid var(--glass-bd);
}
.trust-item{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--ink-2)}
.trust-item svg{width:26px;height:26px;flex:none;padding:5px;border-radius:9px;background:var(--glass);border:1px solid var(--glass-bd);stroke:var(--brand);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

.visual{position:relative;padding-bottom:18px}
.visual-main{
  border-radius:var(--r-l);overflow:hidden;border:1px solid var(--glass-bd);
  box-shadow:var(--sh-2);
  aspect-ratio:4/3;background:var(--bg-2);
}
.visual-main img{width:100%;height:100%;object-fit:cover}
.visual-main::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-l);
  background:linear-gradient(180deg,rgba(5,8,15,.1),rgba(5,8,15,.62));
  pointer-events:none;
}
.visual-card{
  position:absolute;left:-22px;bottom:0;width:200px;
  background:rgba(16,26,46,.86);border:1px solid var(--glass-bd);
  border-radius:var(--r-m);padding:12px;backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);box-shadow:var(--sh-2);
  display:flex;gap:10px;align-items:center;
}
.visual-card img{width:52px;height:52px;border-radius:12px;object-fit:cover;flex:none}
.visual-card strong{display:block;font-size:13.5px;color:var(--ink-1)}
.visual-card span{font-size:12px;color:var(--ink-3)}
.visual-badge{
  position:absolute;top:-14px;right:-10px;
  padding:8px 16px;border-radius:var(--r-pill);
  background:linear-gradient(120deg,var(--accent),#FF9A3D);
  color:#2A1600;font-size:12.5px;font-weight:700;letter-spacing:.03em;
  box-shadow:0 10px 26px -10px rgba(255,194,75,.9);
  display:flex;align-items:center;gap:6px;
}
.visual-badge svg{width:14px;height:14px;stroke:#2A1600;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ============ 权益阶梯 ============ */
.ladder{display:flex;flex-direction:column;gap:16px}
.ladder-step{
  display:grid;grid-template-columns:56px 1.1fr 1.4fr 150px;gap:22px;align-items:center;
  padding:20px 26px;border-radius:var(--r-m);
  background:var(--glass);border:1px solid var(--glass-bd);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
  position:relative;overflow:hidden;
}
.ladder-step::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--brand),var(--accent));
  opacity:.85;
}
.ladder-step:nth-child(1){margin-right:96px}
.ladder-step:nth-child(2){margin-right:56px}
.ladder-step:nth-child(3){margin-right:24px}
.ladder-step:hover{transform:translateY(-4px);border-color:rgba(53,224,255,.35);box-shadow:var(--sh-2)}
.ladder-no{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  font-weight:700;font-size:16px;font-variant-numeric:tabular-nums;
  background:rgba(53,224,255,.1);border:1px solid rgba(53,224,255,.3);color:var(--brand);
}
.ladder-step:nth-child(3) .ladder-no{background:rgba(255,194,75,.12);border-color:rgba(255,194,75,.34);color:var(--accent)}
.ladder-step:nth-child(4) .ladder-no{background:rgba(255,194,75,.16);border-color:rgba(255,194,75,.4);color:var(--accent)}
.ladder-name strong{display:block;font-size:17px;margin-bottom:4px}
.ladder-name span{font-size:13px;color:var(--ink-3)}
.ladder-perk{font-size:14px;color:var(--ink-2);display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--glass-bd);
  font-size:12.5px;color:var(--ink-2);
}
.ladder-threshold{text-align:right}
.ladder-threshold b{display:block;font-size:20px;font-variant-numeric:tabular-nums;color:var(--accent)}
.ladder-threshold span{font-size:12px;color:var(--ink-3)}
.ladder-action{grid-column:4;justify-self:end}
@media (min-width:1025px){
  .ladder-step{grid-template-columns:56px 1.1fr 1.5fr 130px 130px}
  .ladder-action{grid-column:5;justify-self:auto}
}

/* ============ 通道对比 ============ */
.compare-wrap{overflow-x:auto;padding-bottom:10px}
.compare{
  display:grid;grid-template-columns:1.2fr repeat(4,1fr);gap:0;
  min-width:820px;border-radius:var(--r-l);
  background:rgba(16,26,46,.5);border:1px solid var(--glass-bd);overflow:hidden;
}
.compare > div{padding:16px 18px;border-bottom:1px solid rgba(255,255,255,.07);font-size:14px;color:var(--ink-2)}
.compare .cmp-head{background:rgba(255,255,255,.03);color:var(--ink-1);font-weight:600;position:relative}
.compare .cmp-label{color:var(--ink-3);font-size:13.5px}
.compare .cmp-col{border-left:1px solid rgba(255,255,255,.07)}
.compare .cmp-col.reco{
  background:linear-gradient(180deg,rgba(53,224,255,.1),rgba(53,224,255,.02));
  border-left:1px solid rgba(53,224,255,.35);
  border-right:1px solid rgba(53,224,255,.35);
  box-shadow:0 0 0 1px rgba(53,224,255,.14);
}
.cmp-head.reco{border-radius:0;padding-top:34px}
.reco-badge{
  position:absolute;top:8px;left:50%;transform:translateX(-50%);
  padding:3px 12px;border-radius:var(--r-pill);
  background:linear-gradient(120deg,var(--brand),var(--brand-2));
  color:#04121B;font-size:11.5px;font-weight:700;white-space:nowrap;
}
.cmp-price{font-size:20px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}
.cmp-yes{color:var(--ok);font-weight:600}
.cmp-no{color:var(--ink-3)}
.compare .cmp-foot{border-bottom:0;padding:18px}

/* ============ 限时入口 ============ */
.flash{
  position:relative;overflow:hidden;
  border-radius:var(--r-l);
  border:1px solid rgba(255,194,75,.3);
  background:linear-gradient(115deg,rgba(255,194,75,.16),rgba(53,224,255,.06) 48%,rgba(10,17,32,.2));
  padding:34px 36px;
  display:grid;grid-template-columns:auto 1fr auto;gap:32px;align-items:center;
}
.flash::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(520px 240px at 6% 50%,rgba(255,194,75,.18),transparent 70%);
}
.flash > *{position:relative;z-index:1}
.countdown{display:flex;gap:10px}
.cd-block{
  min-width:70px;text-align:center;
  background:rgba(5,8,15,.55);border:1px solid rgba(255,194,75,.3);
  border-radius:var(--r-s);padding:10px 8px;
  box-shadow:inset 0 0 22px -10px rgba(255,194,75,.7);
}
.cd-block b{display:block;font-size:26px;line-height:1.15;font-variant-numeric:tabular-nums;color:var(--accent);font-weight:700}
.cd-block span{font-size:11.5px;color:var(--ink-3);letter-spacing:.06em}
.flash-info h3{font-size:21px;margin-bottom:8px}
.flash-info p{color:var(--ink-2);font-size:14.5px;max-width:520px}

/* ============ 最新信息 ============ */
.posts-top{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;margin-bottom:24px}
.post-lead{
  display:grid;grid-template-columns:200px 1fr;gap:0;
  border-radius:var(--r-l);overflow:hidden;
  background:var(--glass);border:1px solid var(--glass-bd);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.post-lead:hover{transform:translateY(-4px);border-color:rgba(53,224,255,.35);box-shadow:var(--sh-2)}
.lead-cover{aspect-ratio:16/10;background:var(--bg-2);overflow:hidden;height:100%}
.lead-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-lead:hover .lead-cover img{transform:scale(1.05)}
.lead-body{padding:22px 24px;display:flex;flex-direction:column;gap:10px}
.lead-body h3{font-size:19px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.lead-body h3 a{color:var(--ink-1)}
.lead-body h3 a:hover{color:var(--brand)}
.lead-body p{
  color:var(--ink-2);font-size:14px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-3);margin-top:auto}
.badge{
  display:inline-flex;align-items:center;padding:3px 11px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-cat{background:rgba(124,92,255,.16);border:1px solid rgba(124,92,255,.42);color:#B8A6FF}
.badge-hot{background:rgba(255,194,75,.14);border:1px solid rgba(255,194,75,.4);color:var(--accent)}

.post-side{
  border-radius:var(--r-l);background:var(--glass);border:1px solid var(--glass-bd);
  padding:20px 22px;display:flex;flex-direction:column;
}
.post-side h3{font-size:15px;color:var(--ink-2);font-weight:600;margin-bottom:6px;letter-spacing:.03em}
.mini-list{display:flex;flex-direction:column}
.mini-list li{border-bottom:1px solid rgba(255,255,255,.08)}
.mini-list li:last-child{border-bottom:0}
.mini-list a{
  display:flex;justify-content:space-between;gap:14px;align-items:baseline;
  padding:11px 0;color:var(--ink-2);font-size:14px;line-height:1.5;
}
.mini-list a:hover{color:var(--brand)}
.mini-list .mini-title{
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.mini-list time{font-size:12px;color:var(--ink-3);flex:none;font-variant-numeric:tabular-nums}
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  border-radius:var(--r-l);overflow:hidden;background:var(--glass);border:1px solid var(--glass-bd);
  display:flex;flex-direction:column;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(53,224,255,.35);box-shadow:var(--sh-2)}
.card-cover{aspect-ratio:16/10;background:var(--bg-2);overflow:hidden}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-card:hover .card-cover img{transform:scale(1.05)}
.card-body{padding:20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{
  font-size:16.5px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-body h3 a{color:var(--ink-1)}
.card-body h3 a:hover{color:var(--brand)}
.card-body p{
  color:var(--ink-2);font-size:13.5px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.empty-state{
  grid-column:1/-1;
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  padding:56px 24px;border-radius:var(--r-l);
  background:var(--glass);border:1px dashed var(--glass-bd);
}
.empty-state svg{width:38px;height:38px;stroke:var(--brand);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.empty-state p{color:var(--ink-2);font-size:15px}

/* ============ 校验清单 ============ */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.check-card{
  display:flex;gap:16px;padding:24px;
  border-radius:var(--r-m);background:var(--glass);border:1px solid var(--glass-bd);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.check-card:hover{border-color:rgba(53,224,255,.35);transform:translateY(-3px)}
.check-icon{
  width:46px;height:46px;flex:none;border-radius:14px;display:grid;place-items:center;
  background:rgba(53,224,255,.1);border:1px solid rgba(53,224,255,.28);
}
.check-icon svg{width:22px;height:22px;stroke:var(--brand);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.check-card h3{font-size:16.5px;margin-bottom:6px}
.check-card p{font-size:14px;color:var(--ink-2)}
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  margin-top:26px;padding:26px 28px;border-radius:var(--r-l);
  background:linear-gradient(120deg,rgba(53,224,255,.08),rgba(124,92,255,.06));
  border:1px solid var(--glass-bd);
}
.stat-item b{display:block;font-size:28px;font-variant-numeric:tabular-nums;color:var(--brand);line-height:1.2}
.stat-item span{font-size:13px;color:var(--ink-3)}

/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;border-top:1px solid var(--glass-bd)}
.faq-item{border-bottom:1px solid var(--glass-bd)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:18px;align-items:center;
  padding:20px 4px;font-size:16px;font-weight:600;color:var(--ink-1);
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary .faq-ico{
  width:26px;height:26px;flex:none;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--glass-bd);background:var(--glass);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.faq-item summary .faq-ico svg{width:13px;height:13px;stroke:var(--brand);fill:none;stroke-width:2.2;stroke-linecap:round}
.faq-item[open] summary .faq-ico{transform:rotate(45deg);border-color:rgba(53,224,255,.5)}
.faq-answer{padding:0 4px 22px;color:var(--ink-2);font-size:15px;line-height:1.85;max-width:860px}

/* ============ 表单 ============ */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start}
.form-panel{
  border-radius:var(--r-l);background:var(--glass);border:1px solid var(--glass-bd);
  padding:28px;backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;color:var(--ink-2);margin-bottom:8px;font-weight:500}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:var(--r-s);
  background:rgba(5,8,15,.5);border:1px solid var(--glass-bd);
  color:var(--ink-1);font-size:14.5px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{resize:vertical;min-height:104px;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(53,224,255,.18);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-3) 50%),linear-gradient(135deg,var(--ink-3) 50%,transparent 50%);background-position:calc(100% - 20px) 20px,calc(100% - 14px) 20px;background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-3);margin-bottom:22px}
.consent input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);flex:none}
.form-note{font-size:12.5px;color:var(--ink-3);margin-top:14px;text-align:center}
.intro-card{
  border-radius:var(--r-l);border:1px solid var(--glass-bd);overflow:hidden;
  background:var(--bg-2);
}
.intro-card img{width:100%;aspect-ratio:16/9;object-fit:cover;opacity:.85}
.intro-body{padding:24px 26px}
.intro-body h3{font-size:19px;margin-bottom:12px}
.intro-body p{color:var(--ink-2);font-size:14.5px;margin-bottom:16px}
.intro-list li{display:flex;gap:10px;align-items:flex-start;padding:9px 0;font-size:14px;color:var(--ink-2);border-bottom:1px solid rgba(255,255,255,.07)}
.intro-list li:last-child{border-bottom:0}
.intro-list svg{width:17px;height:17px;flex:none;margin-top:4px;stroke:var(--ok);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}

/* ============ CTA 条 ============ */
.cta-strip{
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  padding:34px 38px;border-radius:var(--r-l);
  background:linear-gradient(110deg,rgba(53,224,255,.13),rgba(124,92,255,.1));
  border:1px solid rgba(53,224,255,.26);
}
.cta-strip h2{font-size:23px;margin-bottom:8px}
.cta-strip p{color:var(--ink-2);font-size:14.5px;max-width:620px}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:40px;border-top:1px solid var(--glass-bd);
  background:linear-gradient(180deg,rgba(10,17,32,.6),rgba(5,8,15,.9));
  padding:64px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:34px}
.footer-brand strong{display:block;font-size:16px;margin-bottom:10px}
.footer-brand p{color:var(--ink-3);font-size:13.5px;line-height:1.8;max-width:300px}
.footer-col h4{font-size:14px;color:var(--ink-1);margin-bottom:14px;font-weight:600}
.footer-col li{margin-bottom:9px}
.footer-col a{color:var(--ink-3);font-size:13.5px}
.footer-col a:hover{color:var(--brand)}
.footer-col address{font-style:normal;color:var(--ink-3);font-size:13.5px;line-height:1.9}
.footer-bottom{
  margin-top:44px;padding:20px 0;border-top:1px solid var(--glass-bd);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--ink-3);
}

/* ============ 移动端导航 ============ */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(10,17,32,.9);border-bottom:1px solid var(--glass-bd);
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);
}
.mobile-bar .brand{padding:0;border:0}
.mobile-bar .brand-mark{width:36px;height:36px;border-radius:11px}
.mobile-bar .brand-text strong{font-size:13.5px}
.menu-toggle{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--glass-bd);cursor:pointer;
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink-1);border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-1);border-radius:2px}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:80;opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:290px;z-index:90;
  background:linear-gradient(180deg,#101A2E,#0A1120);
  border-left:1px solid var(--glass-bd);
  transform:translateX(100%);transition:transform .28s var(--ease);
  padding:22px 18px;display:flex;flex-direction:column;gap:16px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;justify-content:space-between;align-items:center;padding-bottom:14px;border-bottom:1px solid var(--glass-bd)}
.drawer-close{
  width:34px;height:34px;border-radius:10px;background:var(--glass);border:1px solid var(--glass-bd);
  color:var(--ink-2);cursor:pointer;font-size:18px;line-height:1;display:grid;place-items:center;
}
.drawer .side-link{padding:13px 12px;font-size:15px}
.drawer .side-link.is-active::before{left:-18px}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--sidebar-w:76px}
  .sidebar{padding:18px 10px;align-items:center}
  .brand{justify-content:center;padding:4px 0 14px}
  .brand-text{display:none}
  .side-nav{width:100%;align-items:center}
  .side-link{justify-content:center;padding:12px 0;width:100%}
  .side-link span{display:none}
  .side-link.is-active::before{left:-10px}
  .side-foot .support-card{display:none}
  .side-foot .btn{padding:12px 0;width:100%}
  .side-foot .btn span{display:none}
  .hero-grid{gap:34px}
  .hero h1{font-size:38px}
}
@media (max-width:1023px){
  :root{--sidebar-w:0px}
  .shell{padding-left:0;padding-top:60px}
  .sidebar{display:none}
  .mobile-bar{display:flex}
  .section{padding:64px 0}
  .section--tight{padding:52px 0}
  .hero{padding:64px 0 56px}
  .hero-grid{grid-template-columns:1fr}
  .visual{max-width:520px;margin-top:8px}
  .visual-card{left:0}
  .ladder-step{margin-right:0 !important;grid-template-columns:48px 1fr;gap:14px;row-gap:10px}
  .ladder-perk{grid-column:2}
  .ladder-threshold{grid-column:2;text-align:left}
  .ladder-action{grid-column:2;justify-self:start}
  .posts-top{grid-template-columns:1fr}
  .posts-grid{grid-template-columns:repeat(2,1fr)}
  .check-grid{grid-template-columns:1fr}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:26px 20px}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .flash{grid-template-columns:1fr;gap:22px;padding:26px 24px}
  .cta-strip{padding:28px 24px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15.5px}
  .hero-cta .btn{width:100%}
  .trust-bar{grid-template-columns:repeat(2,1fr)}
  .section-head h2{font-size:22px}
  .posts-grid{grid-template-columns:1fr}
  .post-lead{grid-template-columns:1fr}
  .lead-cover{aspect-ratio:16/9}
  .visual-card{position:static;width:100%;margin-top:14px}
  .visual-badge{top:-10px;right:8px}
  .footer-grid{grid-template-columns:1fr}
  .cta-strip h2{font-size:20px}
}
@media (max-width:519px){
  .section{padding:52px 0}
  .hero{padding:48px 0 44px}
  .countdown{flex-wrap:wrap}
  .cd-block{min-width:64px}
  .stat-band{grid-template-columns:1fr}
  .form-panel{padding:20px}
  .visual-badge{font-size:11.5px;padding:6px 12px}
}
@media (max-width:479px){
  body::after{display:none}
}

/* roulang page: category1 */
:root{
  --bg-0:#05080F; --bg-1:#0A1120; --bg-2:#101A2E;
  --glass:rgba(255,255,255,.06); --glass-bd:rgba(255,255,255,.12);
  --brand:#35E0FF; --brand-2:#2C7BFF; --accent:#FFC24B; --accent-2:#7C5CFF;
  --ink-1:#EAF2FF; --ink-2:#A8B8D4; --ink-3:#6C7E9E;
  --ok:#2ED47A; --danger:#FF6B6B;
  --r-s:10px; --r-m:16px; --r-l:22px; --r-pill:999px;
  --sh-1:0 2px 10px rgba(0,0,0,.35);
  --sh-2:0 18px 50px -20px rgba(0,0,0,.7);
  --maxw:1200px;
  --side-w:248px;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; padding:0;
  background:var(--bg-1);
  color:var(--ink-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px; line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#7DEBFF;text-decoration:underline}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
:focus-visible{outline:3px solid rgba(53,224,255,.75);outline-offset:2px;border-radius:6px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#04121B;padding:10px 16px;z-index:999;border-radius:0 0 8px 0}
.skip-link:focus{left:0}

/* ============ 布局骨架 ============ */
.app{display:block;min-height:100vh}
.main-wrap{margin-left:var(--side-w);min-width:0}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 28px}
main{display:block;padding-bottom:0}

/* ============ 左侧竖导航 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:linear-gradient(180deg,#08101F 0%,#070C17 100%);
  border-right:1px solid var(--glass-bd);
  display:flex;flex-direction:column;
  padding:22px 16px 18px;
  z-index:60;
}
.side-brand{display:flex;align-items:center;gap:11px;padding:6px 8px 20px;border-bottom:1px solid rgba(255,255,255,.08);margin-bottom:16px}
.side-brand .mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(53,224,255,.22),rgba(124,92,255,.28));
  border:1px solid rgba(53,224,255,.35);
  box-shadow:0 0 22px -8px rgba(53,224,255,.7);
}
.side-brand .mark svg{width:20px;height:20px;stroke:var(--brand)}
.side-brand .wordmark{display:flex;flex-direction:column;line-height:1.25}
.side-brand .wordmark strong{font-size:15px;font-weight:700;color:var(--ink-1);letter-spacing:.4px}
.side-brand .wordmark em{font-style:normal;font-size:11.5px;color:var(--ink-3);letter-spacing:1.4px}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-link{
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:var(--r-s);
  color:var(--ink-2);font-size:14.5px;font-weight:500;
  border:1px solid transparent;position:relative;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.side-link:hover{background:rgba(255,255,255,.05);color:var(--ink-1);text-decoration:none}
.side-link svg{width:19px;height:19px;flex:0 0 19px;opacity:.85}
.side-link.is-active{
  background:var(--glass);border-color:var(--glass-bd);color:var(--ink-1);
  box-shadow:var(--sh-1);
}
.side-link.is-active::before{
  content:"";position:absolute;left:-16px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;
  background:var(--brand);box-shadow:0 0 14px 1px rgba(53,224,255,.8);
}
.side-link.is-active svg{stroke:var(--brand);opacity:1}
.side-foot{margin-top:auto;padding-top:18px;display:flex;flex-direction:column;gap:12px}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 14px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:600;color:#04121B;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));
  border:1px solid rgba(255,255,255,.35);
  box-shadow:0 0 26px -8px rgba(53,224,255,.85);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),filter .2s var(--ease);
}
.side-cta:hover{transform:translateY(-1px);filter:brightness(1.08);text-decoration:none;color:#04121B;box-shadow:0 0 34px -4px rgba(53,224,255,.95)}
.side-cta:active{transform:translateY(1px)}
.side-help{
  background:var(--glass);border:1px solid var(--glass-bd);border-radius:var(--r-m);
  padding:13px 14px;font-size:12.5px;color:var(--ink-2);line-height:1.65;
}
.side-help strong{display:block;color:var(--ink-1);font-size:13.5px;margin-bottom:4px}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;position:sticky;top:0;z-index:70;
  height:60px;align-items:center;justify-content:space-between;
  padding:0 16px;gap:12px;
  background:rgba(10,17,32,.92);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--glass-bd);
}
.topbar .brand-mini{display:flex;align-items:center;gap:9px;font-size:14.5px;font-weight:700;color:var(--ink-1)}
.topbar .brand-mini .mark{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(53,224,255,.22),rgba(124,92,255,.3));border:1px solid rgba(53,224,255,.35)}
.topbar .brand-mini .mark svg{width:16px;height:16px;stroke:var(--brand)}
.burger{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--glass-bd);
  background:var(--glass);display:grid;place-items:center;cursor:pointer;
}
.burger svg{width:20px;height:20px;stroke:var(--ink-1)}
.side-mask{
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);
  z-index:80;opacity:0;pointer-events:none;transition:opacity .25s var(--ease);
}
.side-mask.show{opacity:1;pointer-events:auto}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),filter .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  color:#04121B;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));
  border-color:rgba(255,255,255,.32);
  box-shadow:0 0 26px -8px rgba(53,224,255,.85);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 0 36px -4px rgba(53,224,255,.95);text-decoration:none;color:#04121B}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 16px -8px rgba(53,224,255,.8)}
.btn-ghost{
  color:var(--ink-1);background:var(--glass);border-color:var(--glass-bd);
}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(53,224,255,.45);transform:translateY(-1px);text-decoration:none;color:var(--ink-1)}
.btn-warm{
  color:#1B1204;background:linear-gradient(120deg,var(--accent),#FFD98A);
  border-color:rgba(255,255,255,.4);box-shadow:0 0 24px -10px rgba(255,194,75,.9);
}
.btn-warm:hover{transform:translateY(-1px);filter:brightness(1.06);text-decoration:none;color:#1B1204}
.btn-sm{padding:10px 20px;font-size:14px}

/* ============ 面包屑 ============ */
.crumb{padding:26px 0 0;font-size:13.5px;color:var(--ink-3)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb li::after{content:"/";color:rgba(255,255,255,.22)}
.crumb li:last-child::after{content:""}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--brand)}
.crumb .now{color:var(--ink-1);font-weight:500}

/* ============ Hero ============ */
.hero-cat{
  position:relative;margin-top:22px;border-radius:var(--r-l);overflow:hidden;
  border:1px solid var(--glass-bd);
  min-height:340px;display:flex;align-items:flex-end;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  box-shadow:var(--sh-2);
}
.hero-cat::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(700px 340px at 12% 10%,rgba(53,224,255,.28),transparent 62%),
    linear-gradient(180deg,rgba(5,8,15,.55) 0%,rgba(5,8,15,.78) 72%,rgba(5,8,15,.92) 100%);
}
.hero-cat .grid-layer{
  position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero-inner{position:relative;z-index:2;padding:44px 44px 40px;max-width:840px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.3px;
  background:rgba(124,92,255,.18);border:1px solid rgba(124,92,255,.5);color:#CFC2FF;
}
.tag.warm{background:rgba(255,194,75,.16);border-color:rgba(255,194,75,.5);color:#FFD98A}
.tag.cool{background:rgba(53,224,255,.14);border-color:rgba(53,224,255,.45);color:#9DF1FF}
.hero-cat h1{font-size:44px;font-weight:700;letter-spacing:.5px;line-height:1.22}
.hero-cat .sub{margin-top:16px;font-size:17px;color:var(--ink-2);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.trust-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:32px;
  border-top:1px solid rgba(255,255,255,.12);padding-top:22px;
}
.trust-item{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--ink-2)}
.trust-item svg{width:18px;height:18px;stroke:var(--brand);flex:0 0 18px}

/* ============ 数据概览条 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  margin-top:34px;border-radius:var(--r-m);overflow:hidden;
  border:1px solid var(--glass-bd);background:rgba(255,255,255,.06);
}
.stat-cell{background:var(--bg-2);padding:22px 20px}
.stat-cell b{display:block;font-size:24px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:.4px}
.stat-cell span{display:block;margin-top:6px;font-size:13px;color:var(--ink-3)}

/* ============ 通用板块 ============ */
.section{padding:86px 0 0}
.section-head{margin-bottom:34px;max-width:760px}
.section-head h2{font-size:30px;font-weight:700}
.section-head p{margin-top:12px;color:var(--ink-2);font-size:15.5px}
.lead{
  margin-top:26px;font-size:16px;line-height:1.9;color:var(--ink-2);
  background:var(--glass);border:1px solid var(--glass-bd);border-radius:var(--r-m);
  padding:22px 26px;
}

/* ============ 内容双栏：主区 + sticky 标签列 ============ */
.split{
  display:grid;grid-template-columns:minmax(0,1fr) 292px;
  gap:34px;align-items:start;
}
.filter-col{position:sticky;top:28px;display:flex;flex-direction:column;gap:16px}
.panel{
  background:var(--bg-2);border:1px solid var(--glass-bd);
  border-radius:var(--r-m);padding:22px;box-shadow:var(--sh-1);
}
.panel h3{font-size:15px;font-weight:700;letter-spacing:.4px;margin-bottom:14px;color:var(--ink-1)}
.chip-list{display:flex;flex-wrap:wrap;gap:9px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;border-radius:var(--r-pill);font-size:13px;font-weight:500;
  background:var(--glass);border:1px solid var(--glass-bd);color:var(--ink-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{border-color:rgba(53,224,255,.5);color:var(--ink-1);background:rgba(53,224,255,.1);text-decoration:none;transform:translateY(-1px)}
.chip.is-on{background:rgba(53,224,255,.16);border-color:rgba(53,224,255,.55);color:#B7F4FF}
.note-list{display:flex;flex-direction:column;gap:12px}
.note-list li{font-size:13.5px;color:var(--ink-2);padding-left:16px;position:relative;line-height:1.75}
.note-list li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(53,224,255,.8)}
.panel-warm{background:linear-gradient(160deg,rgba(255,194,75,.12),rgba(16,26,46,.9));border-color:rgba(255,194,75,.32)}
.panel-warm h3{color:#FFD98A}
.panel-warm p{font-size:13.5px;color:var(--ink-2);line-height:1.8}

/* ============ 图文大卡（奇偶交替） ============ */
.feature-list{display:flex;flex-direction:column;gap:26px}
.feature-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);
  gap:26px;align-items:stretch;
  background:var(--bg-2);border:1px solid var(--glass-bd);
  border-radius:var(--r-l);overflow:hidden;padding:0;
  transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.feature-row:hover{border-color:rgba(53,224,255,.35);transform:translateY(-4px);box-shadow:var(--sh-2)}
.feature-row:nth-child(even){grid-template-columns:minmax(0,1.05fr) minmax(0,1fr)}
.feature-row:nth-child(even) .feature-media{order:2}
.feature-media{position:relative;background:var(--bg-2);min-height:250px}
.feature-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.feature-media::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(5,8,15,.5),transparent 55%)}
.media-badge{
  position:absolute;left:16px;top:16px;z-index:2;
  padding:6px 13px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;
  background:rgba(10,17,32,.82);border:1px solid rgba(53,224,255,.45);color:#9DF1FF;
  backdrop-filter:blur(8px);
}
.feature-body{padding:28px 30px;display:flex;flex-direction:column;gap:14px}
.feature-body h3{font-size:21px;font-weight:600}
.feature-body>p{font-size:15px;color:var(--ink-2);line-height:1.85}
.tick-list{display:flex;flex-direction:column;gap:9px}
.tick-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.7}
.tick-list li svg{width:17px;height:17px;flex:0 0 17px;stroke:var(--ok);margin-top:3px}
.feature-meta{display:flex;flex-wrap:wrap;gap:10px 18px;font-size:13px;color:var(--ink-3);border-top:1px solid rgba(255,255,255,.08);padding-top:14px}
.feature-meta strong{color:var(--ink-1);font-weight:600;font-variant-numeric:tabular-nums}
.feature-foot{margin-top:auto;display:flex;flex-wrap:wrap;gap:12px;padding-top:4px}

/* ============ 核对步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step-card{
  background:var(--bg-2);border:1px solid var(--glass-bd);border-radius:var(--r-m);
  padding:24px;position:relative;
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.step-card:hover{border-color:rgba(124,92,255,.45);transform:translateY(-4px)}
.step-num{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  font-size:15px;font-weight:700;color:#D9D0FF;font-variant-numeric:tabular-nums;
  background:rgba(124,92,255,.16);border:1px solid rgba(124,92,255,.45);margin-bottom:16px;
}
.step-card h3{font-size:17px;margin-bottom:10px}
.step-card p{font-size:14px;color:var(--ink-2);line-height:1.8}

/* ============ FAQ ============ */
.faq-wrap{display:flex;flex-direction:column;gap:12px;max-width:920px}
details.faq{
  background:var(--bg-2);border:1px solid var(--glass-bd);
  border-radius:var(--r-m);padding:0;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
details.faq[open]{border-color:rgba(53,224,255,.4);background:rgba(16,26,46,.92)}
details.faq summary{
  list-style:none;cursor:pointer;padding:19px 56px 19px 24px;
  font-size:16px;font-weight:600;color:var(--ink-1);position:relative;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{
  content:"";position:absolute;right:22px;top:50%;
  width:9px;height:9px;margin-top:-6px;
  border-right:2px solid var(--brand);border-bottom:2px solid var(--brand);
  transform:rotate(45deg);transition:transform .25s var(--ease);
}
details.faq[open] summary::after{transform:rotate(-135deg);margin-top:-2px}
details.faq .faq-body{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);border-top:1px solid rgba(255,255,255,.08);padding-top:16px}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;margin-top:92px;border-radius:var(--r-l);overflow:hidden;
  border:1px solid rgba(255,194,75,.32);
  background:linear-gradient(115deg,rgba(255,194,75,.16),rgba(16,26,46,.96) 55%,rgba(53,224,255,.14));
  padding:44px 44px;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:center;
  box-shadow:var(--sh-2);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(520px 240px at 88% 20%,rgba(255,194,75,.22),transparent 65%);
}
.cta-band h2{font-size:28px;font-weight:700;position:relative}
.cta-band p{margin-top:12px;color:var(--ink-2);font-size:15.5px;max-width:640px;position:relative}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;border-top:1px solid var(--glass-bd);
  background:linear-gradient(180deg,rgba(5,8,15,.4),rgba(5,8,15,.92));
  padding:58px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px}
.footer-brand strong{display:block;font-size:17px;font-weight:700;color:var(--ink-1);margin-bottom:12px}
.footer-brand p{font-size:13.5px;color:var(--ink-3);line-height:1.85;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink-1);margin-bottom:14px;letter-spacing:.4px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--ink-2)}
.footer-col a:hover{color:var(--brand)}
.footer-col address{font-style:normal;font-size:13.5px;color:var(--ink-3);line-height:1.9}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:var(--ink-3);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--side-w:76px}
  .sidebar{padding:20px 10px 16px;align-items:center}
  .side-brand{justify-content:center;padding:6px 0 16px}
  .side-brand .wordmark{display:none}
  .side-nav{width:100%;align-items:center}
  .side-link{justify-content:center;padding:12px 0;width:100%}
  .side-link span{display:none}
  .side-link.is-active::before{left:-10px}
  .side-foot{width:100%}
  .side-cta{padding:12px 0;font-size:0}
  .side-cta svg{width:20px;height:20px}
  .side-help{display:none}
}
@media (max-width:1023px){
  .sidebar{
    left:auto;right:0;width:280px;
    transform:translateX(100%);
    transition:transform .3s var(--ease);
    z-index:90;padding:22px 18px;
  }
  .sidebar.open{transform:translateX(0)}
  .side-brand{justify-content:flex-start;padding:6px 8px 20px}
  .side-brand .wordmark{display:flex}
  .side-nav{align-items:stretch}
  .side-link{justify-content:flex-start;padding:11px 12px}
  .side-link span{display:inline}
  .side-link.is-active::before{left:-18px}
  .side-cta{padding:12px 14px;font-size:14.5px}
  .side-cta svg{width:19px;height:19px}
  .main-wrap{margin-left:0}
  .topbar{display:flex}
  .side-mask{display:block}
  .hero-cat h1{font-size:32px}
  .split{grid-template-columns:minmax(0,1fr)}
  .filter-col{position:static;order:-1}
  .steps{grid-template-columns:1fr}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:34px 26px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding-top:60px}
  .hero-cat{min-height:300px}
  .hero-inner{padding:30px 22px 26px}
  .hero-cat h1{font-size:28px}
  .hero-cat .sub{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .trust-row{grid-template-columns:1fr 1fr;gap:12px}
  .stat-strip{grid-template-columns:1fr 1fr}
  .feature-row,.feature-row:nth-child(even){grid-template-columns:minmax(0,1fr)}
  .feature-row:nth-child(even) .feature-media{order:0}
  .feature-body{padding:22px 20px}
  .section-head h2{font-size:22px}
  .cta-band h2{font-size:22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:479px){
  .hero-cat h1{font-size:24px;letter-spacing:0}
  .trust-row{grid-template-columns:1fr 1fr;gap:10px}
  .stat-cell{padding:18px 14px}
  .stat-cell b{font-size:20px}
  .hero-cat .grid-layer{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: article */
/* ============ 设计令牌 ============ */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --glass:rgba(255,255,255,.06);
  --glass-bd:rgba(255,255,255,.12);
  --brand:#35E0FF;
  --brand-2:#2C7BFF;
  --accent:#FFC24B;
  --accent-2:#7C5CFF;
  --ink-1:#EAF2FF;
  --ink-2:#A8B8D4;
  --ink-3:#6C7E9E;
  --ok:#2ED47A;
  --danger:#FF6B6B;
  --r-s:10px;
  --r-m:16px;
  --r-l:22px;
  --r-pill:999px;
  --sh-1:0 2px 10px rgba(0,0,0,.35);
  --sh-2:0 18px 50px -20px rgba(0,0,0,.7);
  --nav-w:248px;
  --ease:cubic-bezier(.2,.8,.2,1);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background:var(--bg-1);
  color:var(--ink-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:64px 64px;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:#8DF0FF}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;font-weight:600;line-height:1.32}
p{margin:0}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:4px}
::selection{background:rgba(53,224,255,.32);color:#fff}

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

/* ============ 品牌标识 ============ */
.brand-mark{
  display:grid;
  place-items:center;
  width:38px;height:38px;
  border-radius:12px;
  background:linear-gradient(140deg,var(--brand),var(--brand-2));
  color:#04121C;
  font-weight:800;
  font-size:15px;
  letter-spacing:0;
  flex:0 0 auto;
  box-shadow:0 10px 26px -12px rgba(53,224,255,.9);
}

/* ============ 移动端顶栏 ============ */
.topbar{
  display:none;
  position:sticky;
  top:0;
  z-index:90;
  height:60px;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  background:rgba(10,17,32,.86);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--glass-bd);
}
.brand-mini{display:flex;align-items:center;gap:9px}
.brand-mini .brand-mark{width:32px;height:32px;border-radius:10px;font-size:13px}
.brand-mini-text{font-size:14.5px;font-weight:600;color:var(--ink-1);white-space:nowrap}
.nav-toggle{
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--glass-bd);
  background:var(--glass);
  display:grid;place-items:center;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{background:rgba(255,255,255,.1);border-color:rgba(53,224,255,.4)}
.nav-toggle i{display:block;position:relative;width:18px;height:2px;background:var(--ink-1);border-radius:2px}
.nav-toggle i::before,.nav-toggle i::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-1);border-radius:2px}
.nav-toggle i::before{top:-6px}
.nav-toggle i::after{top:6px}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;
  top:0;bottom:0;left:0;
  width:var(--nav-w);
  z-index:80;
  display:flex;
  flex-direction:column;
  gap:20px;
  padding:24px 16px 28px;
  background:linear-gradient(180deg,rgba(16,26,46,.95),rgba(8,13,25,.97));
  border-right:1px solid var(--glass-bd);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  overflow-y:auto;
  scrollbar-width:none;
}
.sidebar::-webkit-scrollbar{display:none}
.brand{
  display:flex;align-items:center;gap:11px;
  padding:0 6px 18px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.brand:hover .brand-text strong{color:var(--brand)}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{display:block;font-size:15px;line-height:1.35;color:var(--ink-1);letter-spacing:.2px;transition:color .2s var(--ease)}
.brand-text span{font-size:12px;color:var(--ink-3);white-space:nowrap}
.side-nav{display:flex;flex-direction:column;gap:6px}
.side-link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;
  border-radius:12px;
  border:1px solid transparent;
  color:var(--ink-2);
  font-size:14.5px;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.side-link svg{
  width:19px;height:19px;flex:0 0 auto;
  fill:none;stroke:currentColor;stroke-width:1.6;
  stroke-linecap:round;stroke-linejoin:round;
}
.side-link:hover{background:rgba(255,255,255,.05);color:var(--ink-1)}
.side-link.is-active{
  background:var(--glass);
  border-color:var(--glass-bd);
  color:var(--ink-1);
  box-shadow:0 6px 22px -14px rgba(53,224,255,.9);
}
.side-link.is-active::before{
  content:"";
  position:absolute;left:-16px;top:8px;bottom:8px;width:3px;
  border-radius:3px;background:var(--brand);
  box-shadow:0 0 12px var(--brand);
}
.side-link.is-active svg{color:var(--brand)}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.side-card{
  background:var(--glass);
  border:1px solid var(--glass-bd);
  border-radius:var(--r-m);
  padding:14px;
  font-size:12.5px;
  color:var(--ink-3);
  line-height:1.7;
}
.side-card strong{display:block;color:var(--ink-1);font-size:13.5px;margin-bottom:5px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;
  border-radius:var(--r-pill);
  font-size:14.5px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(120deg,var(--brand),var(--brand-2));
  color:#05121C;
  border-color:rgba(255,255,255,.25);
  box-shadow:0 10px 30px -14px rgba(53,224,255,.95);
}
.btn-primary:hover{
  transform:translateY(-1px);
  filter:brightness(1.08);
  color:#05121C;
  box-shadow:0 16px 44px -14px rgba(53,224,255,1);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 18px -12px rgba(53,224,255,.8)}
.btn-ghost{
  background:var(--glass);
  border-color:var(--glass-bd);
  color:var(--ink-1);
}
.btn-ghost:hover{background:rgba(255,255,255,.11);color:var(--ink-1);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}

/* ============ 内容区 ============ */
.content{
  position:relative;
  z-index:1;
  margin-left:var(--nav-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.nav-mask{
  position:fixed;inset:0;
  background:rgba(0,0,0,.6);
  opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease);
  z-index:95;
}
body.nav-open .nav-mask{opacity:1;visibility:visible}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;
  border-bottom:1px solid var(--glass-bd);
  background-color:#0A1120;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
  overflow:hidden;
}
.article-hero::before{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(62% 82% at 12% 18%,rgba(53,224,255,.18),transparent 62%),
    radial-gradient(50% 70% at 88% 90%,rgba(124,92,255,.16),transparent 66%),
    linear-gradient(180deg,rgba(5,8,15,.72),rgba(10,17,32,.93));
}
.article-hero .container{position:relative;z-index:1;padding-top:38px;padding-bottom:46px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3)}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{
  color:var(--ink-1);
  max-width:min(100%,560px);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:22px;
  padding:5px 13px;
  border-radius:var(--r-pill);
  font-size:12px;
  letter-spacing:.04em;
  background:rgba(124,92,255,.16);
  border:1px solid rgba(124,92,255,.42);
  color:#C4B8FF;
}
.article-title{
  margin:16px 0 18px;
  font-size:clamp(26px,3.3vw,40px);
  line-height:1.3;
  font-weight:700;
  color:var(--ink-1);
  max-width:940px;
  letter-spacing:.2px;
}
.article-meta{display:flex;flex-wrap:wrap;gap:12px 26px;font-size:13.5px;color:var(--ink-3);align-items:center}
.meta-item{display:inline-flex;align-items:center;gap:7px;line-height:1.6}
.meta-item svg{
  width:16px;height:16px;flex:0 0 auto;
  fill:none;stroke:currentColor;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;
  color:var(--brand);
}
.meta-item time,.meta-item a{color:var(--ink-2)}
.meta-item a:hover{color:var(--brand)}

/* ============ 文章布局 ============ */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:46px;
  align-items:start;
  padding:56px 0 40px;
}
.article-main{min-width:0}
.article-body{
  max-width:840px;
  font-size:17px;
  line-height:1.9;
  color:#D9E5F8;
  word-wrap:break-word;
}
.article-body > * + *{margin-top:1.2em}
.article-body h2{
  position:relative;
  margin-top:2.2em;
  padding-left:16px;
  font-size:23px;
  font-weight:600;
  color:var(--ink-1);
  scroll-margin-top:80px;
}
.article-body h2::before{
  content:"";
  position:absolute;left:0;top:.3em;bottom:.3em;width:4px;
  border-radius:4px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
  box-shadow:0 0 14px rgba(53,224,255,.7);
}
.article-body h3{
  margin-top:1.8em;
  font-size:18.5px;
  font-weight:600;
  color:var(--ink-1);
  scroll-margin-top:80px;
}
.article-body h4{margin-top:1.5em;font-size:16.5px;color:var(--ink-1)}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(53,224,255,.34)}
.article-body a:hover{border-bottom-color:var(--brand);color:#8DF0FF}
.article-body strong{color:#FFFFFF;font-weight:600}
.article-body img{
  margin:1.6em auto;
  border-radius:var(--r-m);
  box-shadow:var(--sh-1);
}
.article-body figure{margin:1.8em 0}
.article-body figcaption{
  margin-top:10px;
  text-align:center;
  font-size:13px;
  color:var(--ink-3);
}
.article-body blockquote{
  margin:1.6em 0;
  padding:16px 20px;
  border-left:3px solid var(--brand);
  background:var(--glass);
  border-radius:0 var(--r-m) var(--r-m) 0;
  color:var(--ink-2);
}
.article-body ul,.article-body ol{margin:1.2em 0;padding-left:1.35em;list-style:revert}
.article-body li{margin:.42em 0}
.article-body li::marker{color:var(--brand)}
.article-body hr{border:0;border-top:1px solid var(--glass-bd);margin:2.2em 0}
.article-body table{
  display:block;
  width:100%;
  overflow-x:auto;
  border-collapse:collapse;
  font-size:15px;
  line-height:1.65;
}
.article-body th,.article-body td{
  border:1px solid var(--glass-bd);
  padding:10px 14px;
  text-align:left;
  min-width:120px;
}
.article-body th{background:rgba(255,255,255,.05);color:var(--ink-1);font-weight:600}
.article-body code{
  background:rgba(53,224,255,.1);
  color:#9FE9FF;
  padding:2px 6px;
  border-radius:6px;
  font-size:.9em;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body pre{
  background:#070C16;
  border:1px solid var(--glass-bd);
  border-radius:var(--r-m);
  padding:16px;
  overflow-x:auto;
}
.article-body pre code{background:none;padding:0}

/* ============ 空态 ============ */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
  gap:14px;
  padding:56px 28px;
  background:var(--glass);
  border:1px solid var(--glass-bd);
  border-radius:var(--r-l);
}
.empty-state svg{
  width:46px;height:46px;
  fill:none;stroke:var(--brand);stroke-width:1.4;
  stroke-linecap:round;stroke-linejoin:round;
  opacity:.9;
}
.empty-state strong{font-size:19px;color:var(--ink-1)}
.empty-state p{font-size:14.5px;color:var(--ink-3);max-width:460px;line-height:1.85}

/* ============ 文章页操作区 ============ */
.article-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:52px;
  padding-top:28px;
  border-top:1px solid rgba(255,255,255,.08);
}

/* ============ 侧栏 ============ */
.article-side{
  position:sticky;
  top:24px;
  display:flex;
  flex-direction:column;
  gap:18px;
  min-width:0;
}
.side-box{
  background:var(--glass);
  border:1px solid var(--glass-bd);
  border-radius:var(--r-m);
  padding:18px;
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
}
.side-box h3{
  display:flex;align-items:center;gap:9px;
  font-size:14px;
  letter-spacing:.06em;
  color:var(--ink-1);
  margin-bottom:14px;
}
.side-box h3::before{
  content:"";
  width:8px;height:8px;border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 10px var(--brand);
  flex:0 0 auto;
}
#tocList{display:flex;flex-direction:column;gap:2px;max-height:330px;overflow-y:auto;scrollbar-width:thin}
#tocList a{
  display:block;
  font-size:13.5px;
  line-height:1.55;
  color:var(--ink-2);
  padding:7px 10px;
  border-radius:8px;
  border-left:2px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
#tocList a:hover{background:rgba(255,255,255,.07);color:var(--ink-1);border-left-color:var(--brand)}
.side-links{display:flex;flex-direction:column;gap:8px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;
  gap:10px;
  padding:10px 12px;
  border-radius:var(--r-s);
  border:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.03);
  font-size:13.5px;
  color:var(--ink-2);
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.side-links a:hover{background:rgba(255,255,255,.08);border-color:rgba(53,224,255,.4);color:var(--ink-1);transform:translateX(2px)}
.side-links a::after{content:"›";color:var(--brand);font-size:16px;line-height:1}

/* ============ 相关推荐 ============ */
.related{padding:8px 0 92px}
.related h2{
  position:relative;
  padding-left:14px;
  font-size:22px;
  margin-bottom:22px;
  color:var(--ink-1);
}
.related h2::before{
  content:"";
  position:absolute;left:0;top:.28em;bottom:.28em;width:4px;
  border-radius:4px;
  background:linear-gradient(180deg,var(--accent),#FF8A4B);
  box-shadow:0 0 12px rgba(255,194,75,.6);
}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.post-card{
  display:flex;
  flex-direction:column;
  background:var(--glass);
  border:1px solid var(--glass-bd);
  border-radius:var(--r-m);
  overflow:hidden;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.post-card:hover{
  transform:translateY(-4px);
  border-color:rgba(53,224,255,.35);
  box-shadow:var(--sh-2);
}
.post-card .thumb{
  aspect-ratio:16/10;
  background:var(--bg-2);
  overflow:hidden;
}
.post-card .thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .45s var(--ease);
}
.post-card:hover .thumb img{transform:scale(1.05)}
.post-card .card-body{
  display:flex;
  flex-direction:column;
  gap:10px;
  flex:1;
  padding:18px 20px 20px;
}
.post-card .card-body h3{
  font-size:16.5px;
  line-height:1.5;
  color:var(--ink-1);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-card .card-body h3 a{color:var(--ink-1)}
.post-card .card-body h3 a:hover{color:var(--brand)}
.post-card .card-body p{
  font-size:14px;
  color:var(--ink-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-card .card-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid rgba(255,255,255,.07);
  font-size:12.5px;
  color:var(--ink-3);
}
.post-card .card-meta a{color:var(--brand);font-weight:600}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:auto;
  padding:64px 0 28px;
  background:linear-gradient(180deg,rgba(10,17,32,.35),rgba(5,8,15,.96));
  border-top:1px solid var(--glass-bd);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.25fr;gap:36px}
.footer-brand strong{display:block;font-size:17px;color:var(--ink-1);margin-bottom:12px}
.footer-brand p{margin:0;max-width:360px;font-size:13.5px;line-height:1.85;color:var(--ink-3)}
.footer-col h4{font-size:14px;color:var(--ink-1);margin-bottom:14px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:9px}
.footer-col a{font-size:13.5px;color:var(--ink-2)}
.footer-col a:hover{color:var(--brand)}
.footer-col address{font-style:normal;font-size:13.5px;line-height:1.95;color:var(--ink-3)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:14px;
  margin-top:42px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:12.5px;
  color:var(--ink-3);
}

/* ============ 响应式：1024–1279 收窄侧栏 ============ */
@media (min-width:1024px) and (max-width:1279px){
  :root{--nav-w:76px}
  .sidebar{padding:20px 10px 24px;align-items:center;gap:16px}
  .brand{padding:0 0 16px;justify-content:center}
  .brand-text{display:none}
  .side-link{justify-content:center;padding:12px 10px}
  .side-link span{display:none}
  .side-link.is-active::before{left:-10px}
  .side-foot .btn{padding:11px 6px;font-size:12px}
  .side-card{display:none}
}

/* ============ 响应式：<1024 顶部导航 + 抽屉 ============ */
@media (max-width:1023px){
  .topbar{display:flex}
  .sidebar{
    width:280px;
    transform:translateX(-104%);
    transition:transform .3s var(--ease);
    z-index:100;
    padding-top:22px;
  }
  body.nav-open .sidebar{transform:translateX(0)}
  .content{margin-left:0}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:34px;padding:40px 0 32px}
  .article-side{position:static;order:2}
  .article-body{max-width:none}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
  #tocList{max-height:none}
}

/* ============ 响应式：<768 ============ */
@media (max-width:767px){
  .container{padding:0 16px}
  .article-hero .container{padding-top:26px;padding-bottom:34px}
  .article-title{font-size:24px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:17px}
  .article-meta{gap:8px 16px;font-size:13px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .related{padding-bottom:64px}
  .article-actions{gap:12px}
  .article-actions .btn{flex:1 1 100%}
  .site-footer{padding:48px 0 24px}
}

/* ============ 响应式：<480 ============ */
@media (max-width:479px){
  .container{padding:0 14px}
  body::before{display:none}
  .brand-mini-text{font-size:13.5px}
  .empty-state{padding:40px 18px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;gap:8px}
  .side-box{padding:16px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --glass:rgba(255,255,255,.06);
  --glass-bd:rgba(255,255,255,.12);
  --brand:#35E0FF;
  --brand-2:#2C7BFF;
  --accent:#FFC24B;
  --accent-2:#7C5CFF;
  --ink-1:#EAF2FF;
  --ink-2:#A8B8D4;
  --ink-3:#6C7E9E;
  --ok:#2ED47A;
  --danger:#FF6B6B;
  --r-s:10px;
  --r-m:16px;
  --r-l:22px;
  --r-pill:999px;
  --sh-1:0 2px 10px rgba(0,0,0,.35);
  --sh-2:0 18px 50px -20px rgba(0,0,0,.7);
  --sidebar-w:248px;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-1);
  color:var(--ink-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease),opacity .18s var(--ease);}
a:hover{color:#8DF0FF;text-decoration:underline;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:3px solid rgba(53,224,255,.75);outline-offset:2px;border-radius:6px;}

/* ---------- 布局骨架 ---------- */
.app{min-height:100vh;}
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  padding:26px 18px 22px;
  display:flex;
  flex-direction:column;
  gap:24px;
  background:linear-gradient(180deg,rgba(10,17,32,.97) 0%,rgba(5,8,15,.99) 100%);
  border-right:1px solid var(--glass-bd);
  z-index:70;
  overflow-y:auto;
  scrollbar-width:none;
}
.sidebar::-webkit-scrollbar{width:0;height:0;}
.side-logo{display:flex;align-items:center;gap:12px;}
.side-logo .mark{
  width:42px;height:42px;flex:0 0 42px;
  border-radius:13px;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 60%,var(--accent-2) 100%);
  display:grid;place-items:center;
  box-shadow:0 8px 24px -10px rgba(53,224,255,.85);
}
.side-logo .mark svg{width:24px;height:24px;fill:none;stroke:#04121C;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.side-logo .txt strong{display:block;font-size:15.5px;font-weight:700;letter-spacing:.2px;line-height:1.35;}
.side-logo .txt span{display:block;font-size:12px;color:var(--ink-3);letter-spacing:.6px;}
.side-nav{display:flex;flex-direction:column;gap:6px;overflow:visible;}
.side-nav .side-link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  padding:11px 14px;
  border-radius:var(--r-s);
  color:var(--ink-2);
  font-size:14.5px;
  border:1px solid transparent;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.side-nav .side-link svg{
  width:19px;height:19px;flex:0 0 19px;
  fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;
}
.side-nav .side-link:hover{background:rgba(255,255,255,.05);color:var(--ink-1);text-decoration:none;}
.side-nav .side-link.is-active{
  background:var(--glass);
  border-color:var(--glass-bd);
  color:var(--ink-1);
  font-weight:600;
}
.side-nav .side-link.is-active::before{
  content:"";position:absolute;left:-18px;top:50%;transform:translateY(-50%);
  width:3px;height:24px;border-radius:0 4px 4px 0;
  background:var(--brand);
  box-shadow:0 0 14px 2px rgba(53,224,255,.7);
}
.side-nav .side-link.is-active svg{stroke:var(--brand);}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px;}
.side-cta{
  display:block;text-align:center;
  padding:13px 16px;
  border-radius:var(--r-pill);
  font-weight:600;font-size:14.5px;
  color:#03131B;
  background:linear-gradient(120deg,var(--brand) 0%,var(--brand-2) 100%);
  border:1px solid rgba(255,255,255,.35);
  box-shadow:0 0 22px -4px rgba(53,224,255,.75);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease);
}
.side-cta:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 0 30px -2px rgba(53,224,255,.9);text-decoration:none;color:#03131B;}
.side-cta:active{transform:translateY(1px);box-shadow:0 0 14px -4px rgba(53,224,255,.6);}
.side-card{
  padding:14px;
  border-radius:var(--r-m);
  background:var(--glass);
  border:1px solid var(--glass-bd);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
}
.side-card strong{display:block;font-size:13.5px;margin-bottom:6px;color:var(--ink-1);}
.side-card p{font-size:12.5px;line-height:1.7;color:var(--ink-3);}

.main-wrap{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column;}
.topbar{
  display:none;
  position:sticky;top:0;z-index:65;
  height:60px;align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(10,17,32,.88);
  border-bottom:1px solid var(--glass-bd);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.topbar .brand{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;color:var(--ink-1);}
.topbar .brand svg{width:22px;height:22px;fill:none;stroke:var(--brand);stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.burger{
  width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--glass-bd);
  display:grid;place-items:center;cursor:pointer;
}
.burger svg{width:20px;height:20px;fill:none;stroke:var(--ink-1);stroke-width:2;stroke-linecap:round;}
.nav-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);
  z-index:66;
}
body.nav-open .nav-mask{opacity:1;visibility:visible;}

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

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:26px 0 0;font-size:13.5px;color:var(--ink-3);}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:var(--ink-3);opacity:.7;}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb [aria-current]{color:var(--ink-1);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  padding:34px 0 78px;
  background-image:linear-gradient(180deg,rgba(5,8,15,.74) 0%,rgba(10,17,32,.94) 78%,var(--bg-1) 100%),
                   url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center 30%;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(620px 320px at 12% 8%,rgba(53,224,255,.20),transparent 70%),
    radial-gradient(520px 300px at 88% 82%,rgba(124,92,255,.18),transparent 72%);
}
.hero .container{position:relative;z-index:2;}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;
  align-items:center;
  margin-top:34px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:var(--r-pill);
  font-size:12.5px;letter-spacing:.3px;
  background:rgba(124,92,255,.16);
  border:1px solid rgba(124,92,255,.45);
  color:#CDBFFF;
}
.tag.is-brand{background:rgba(53,224,255,.13);border-color:rgba(53,224,255,.42);color:#A9EEFF;}
.tag.is-warm{background:rgba(255,194,75,.13);border-color:rgba(255,194,75,.42);color:#FFD996;}
.hero h1{
  font-size:44px;
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.5px;
  max-width:15em;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--brand) 0%,var(--brand-2) 55%,var(--accent-2) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  margin-top:20px;
  font-size:17px;line-height:1.85;
  color:var(--ink-2);
  max-width:34em;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  font-size:15.5px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{
  color:#03131B;
  background:linear-gradient(120deg,var(--brand) 0%,var(--brand-2) 100%);
  border-color:rgba(255,255,255,.35);
  box-shadow:0 0 24px -6px rgba(53,224,255,.85);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 0 34px -4px rgba(53,224,255,.95);text-decoration:none;color:#03131B;}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 14px -6px rgba(53,224,255,.7);}
.btn-ghost{
  color:var(--ink-1);
  background:var(--glass);
  border-color:var(--glass-bd);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.btn-ghost:hover{transform:translateY(-1px);border-color:rgba(53,224,255,.6);color:var(--ink-1);text-decoration:none;background:rgba(53,224,255,.10);}
.btn-ghost:active{transform:translateY(1px);}

.trust-bar{
  margin-top:42px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--glass-bd);
  border:1px solid var(--glass-bd);
  border-radius:var(--r-m);
  overflow:hidden;
}
.trust-item{
  background:rgba(10,17,32,.72);
  padding:16px 16px;
  display:flex;align-items:center;gap:10px;
  font-size:13.5px;color:var(--ink-2);
}
.trust-item svg{width:18px;height:18px;flex:0 0 18px;fill:none;stroke:var(--brand);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

.hero-visual{position:relative;}
.hero-visual .main-img{
  border-radius:var(--r-l);
  overflow:hidden;
  border:1px solid var(--glass-bd);
  box-shadow:var(--sh-2);
  background:var(--bg-2);
  aspect-ratio:16/11;
}
.hero-visual .main-img img{width:100%;height:100%;object-fit:cover;}
.hero-visual .float-card{
  position:absolute;
  left:-22px;bottom:-26px;
  width:min(266px,78%);
  padding:16px 18px;
  border-radius:var(--r-m);
  background:rgba(16,26,46,.9);
  border:1px solid var(--glass-bd);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--sh-2);
}
.hero-visual .float-card strong{display:block;font-size:14px;margin-bottom:4px;}
.hero-visual .float-card span{font-size:12.5px;color:var(--ink-3);line-height:1.65;display:block;}
.hero-visual .badge{
  position:absolute;right:-14px;top:-14px;
  padding:9px 16px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;
  color:#2A1B00;
  background:linear-gradient(120deg,var(--accent) 0%,#FF9E3D 100%);
  box-shadow:0 0 22px -6px rgba(255,194,75,.9);
}

/* ---------- 通用板块 ---------- */
main{flex:1;}
.section{position:relative;padding:88px 0;}
.section.alt{background:linear-gradient(180deg,rgba(16,26,46,.55) 0%,rgba(10,17,32,.2) 100%);border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06);}
.section-head{max-width:760px;margin-bottom:44px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:1.4px;text-transform:uppercase;
  color:var(--brand);margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),transparent);}
.section-head h2{
  font-size:30px;line-height:1.35;font-weight:700;letter-spacing:-.3px;
}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:15.5px;line-height:1.85;}

.lead{
  padding:26px 30px;
  border-radius:var(--r-l);
  background:var(--glass);
  border:1px solid var(--glass-bd);
  border-left:3px solid var(--brand);
  color:var(--ink-2);
  font-size:15.5px;
  line-height:1.9;
}
.lead strong{color:var(--ink-1);}

.point-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:26px;
}
.point{
  padding:22px;
  border-radius:var(--r-m);
  background:var(--bg-2);
  border:1px solid var(--glass-bd);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.point:hover{transform:translateY(-4px);border-color:rgba(53,224,255,.35);box-shadow:var(--sh-2);}
.point .ico{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:rgba(53,224,255,.12);border:1px solid rgba(53,224,255,.32);margin-bottom:14px;
}
.point .ico svg{width:19px;height:19px;fill:none;stroke:var(--brand);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.point h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.point p{font-size:14px;color:var(--ink-2);line-height:1.8;}

/* ---------- 时间轴 ---------- */
.flow-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 336px;
  gap:44px;
  align-items:start;
}
.timeline{position:relative;}
.tl-item{
  position:relative;
  padding:0 0 30px 74px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:25px;top:52px;bottom:-2px;width:2px;
  background:linear-gradient(180deg,rgba(53,224,255,.55),rgba(53,224,255,.08));
}
.tl-item:last-child::before{display:none;}
.tl-num{
  position:absolute;left:0;top:0;
  width:52px;height:52px;border-radius:50%;
  display:grid;place-items:center;
  font-size:16px;font-weight:700;
  font-variant-numeric:tabular-nums;
  color:var(--brand);
  background:linear-gradient(150deg,rgba(53,224,255,.18),rgba(44,123,255,.12));
  border:1px solid rgba(53,224,255,.45);
  box-shadow:0 0 20px -6px rgba(53,224,255,.8);
}
.tl-card{
  padding:22px 24px;
  border-radius:var(--r-m);
  background:var(--bg-2);
  border:1px solid var(--glass-bd);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);border-color:rgba(53,224,255,.35);box-shadow:var(--sh-2);}
.tl-card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.tl-card p{font-size:14.5px;color:var(--ink-2);line-height:1.85;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tl-tags span{
  font-size:12.5px;padding:4px 11px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--glass-bd);color:var(--ink-2);
}
.tl-tags span.is-ok{color:#9FF3C6;border-color:rgba(46,212,122,.4);background:rgba(46,212,122,.1);}

/* ---------- 摘要卡 ---------- */
.summary{
  position:sticky;top:26px;
  border-radius:var(--r-l);
  background:var(--bg-2);
  border:1px solid var(--glass-bd);
  overflow:hidden;
  box-shadow:var(--sh-2);
}
.summary .cover{aspect-ratio:16/10;background:var(--bg-2);}
.summary .cover img{width:100%;height:100%;object-fit:cover;}
.summary .body{padding:22px 22px 24px;}
.summary h3{font-size:18px;font-weight:600;margin-bottom:14px;}
.summary ul{display:flex;flex-direction:column;gap:12px;}
.summary li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.75;}
.summary li svg{width:16px;height:16px;flex:0 0 16px;margin-top:4px;fill:none;stroke:var(--ok);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.summary .note{
  margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.08);
  font-size:12.5px;color:var(--ink-3);line-height:1.75;
}
.summary .btn{width:100%;margin-top:18px;padding:12px 18px;font-size:14.5px;}

/* ---------- 自检清单 ---------- */
.check-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:40px;align-items:start;}
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.check-card{
  padding:20px 22px;
  border-radius:var(--r-m);
  background:rgba(16,26,46,.72);
  border:1px solid var(--glass-bd);
  transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.check-card:hover{transform:translateY(-4px);border-color:rgba(53,224,255,.35);background:rgba(16,26,46,.95);}
.check-card h3{font-size:16px;font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:8px;}
.check-card h3 i{
  width:8px;height:8px;border-radius:50%;background:var(--accent-2);
  box-shadow:0 0 10px 1px rgba(124,92,255,.9);flex:0 0 8px;
}
.check-card p{font-size:13.8px;color:var(--ink-2);line-height:1.8;}
.check-visual{
  border-radius:var(--r-l);overflow:hidden;border:1px solid var(--glass-bd);
  background:var(--bg-2);aspect-ratio:4/3;
}
.check-visual img{width:100%;height:100%;object-fit:cover;}
.check-visual-caption{
  margin-top:14px;font-size:12.8px;color:var(--ink-3);line-height:1.7;
}

/* ---------- 异常处理 ---------- */
.issue-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.issue{
  padding:24px 26px;
  border-radius:var(--r-m);
  background:linear-gradient(180deg,rgba(16,26,46,.9),rgba(10,17,32,.9));
  border:1px solid var(--glass-bd);
  transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.issue:hover{transform:translateY(-4px);border-color:rgba(255,194,75,.4);}
.issue .tagline{
  display:inline-flex;align-items:center;font-size:12px;letter-spacing:.6px;
  padding:4px 10px;border-radius:var(--r-pill);margin-bottom:12px;
  background:rgba(255,107,107,.12);border:1px solid rgba(255,107,107,.35);color:#FFB3B3;
}
.issue h3{font-size:17px;font-weight:600;margin-bottom:10px;}
.issue p{font-size:14px;color:var(--ink-2);line-height:1.85;}
.issue p+p{margin-top:10px;}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:1px;background:var(--glass-bd);border:1px solid var(--glass-bd);border-radius:var(--r-m);overflow:hidden;}
.faq details{background:rgba(10,17,32,.92);transition:background .2s var(--ease);}
.faq details[open]{background:rgba(16,26,46,.95);}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;
  font-size:16px;font-weight:600;
  cursor:pointer;list-style:none;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary .plus{
  width:22px;height:22px;flex:0 0 22px;position:relative;
  transition:transform .25s var(--ease);
}
.faq summary .plus::before,.faq summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq summary .plus::before{width:14px;height:2px;}
.faq summary .plus::after{width:2px;height:14px;transition:opacity .25s var(--ease);}
.faq details[open] summary .plus{transform:rotate(180deg);}
.faq details[open] summary .plus::after{opacity:0;}
.faq .answer{padding:0 24px 22px;color:var(--ink-2);font-size:15px;line-height:1.85;}
.faq summary:hover{color:var(--brand);}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-l);
  padding:46px 48px;
  background:
    linear-gradient(115deg,rgba(255,194,75,.16) 0%,rgba(255,194,75,0) 55%),
    linear-gradient(180deg,rgba(16,26,46,.96),rgba(10,17,32,.96));
  border:1px solid rgba(255,194,75,.32);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-70px;width:280px;height:280px;
  background:radial-gradient(circle,rgba(53,224,255,.22),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:26px;font-weight:700;line-height:1.4;max-width:22em;}
.cta-band p{margin-top:12px;color:var(--ink-2);font-size:15px;max-width:38em;line-height:1.85;}
.cta-band .actions{display:flex;flex-wrap:wrap;gap:14px;position:relative;z-index:2;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:auto;
  background:linear-gradient(180deg,rgba(5,8,15,.6),rgba(5,8,15,.98));
  border-top:1px solid var(--glass-bd);
  padding:64px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand strong{display:block;font-size:17px;font-weight:700;margin-bottom:12px;}
.footer-brand p{font-size:13.5px;color:var(--ink-3);line-height:1.85;max-width:34em;}
.footer-col h4{font-size:14.5px;font-weight:600;margin-bottom:16px;color:var(--ink-1);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13.5px;color:var(--ink-3);}
.footer-col a:hover{color:var(--brand);}
.footer-col address{font-style:normal;font-size:13.5px;color:var(--ink-3);line-height:1.9;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:12.8px;color:var(--ink-3);
}
.footer-bottom span{max-width:60em;line-height:1.8;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero h1{font-size:40px;}
  .flow-layout{grid-template-columns:minmax(0,1fr) 300px;gap:32px;}
}
@media (max-width:1023px){
  .sidebar{
    width:286px;
    transform:translateX(-104%);
    transition:transform .3s var(--ease);
    box-shadow:var(--sh-2);
  }
  body.nav-open .sidebar{transform:translateX(0);}
  .main-wrap{margin-left:0;}
  .topbar{display:flex;}
  .hero{padding-top:20px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{max-width:560px;}
  .hero-visual .float-card{left:12px;bottom:-24px;}
  .flow-layout{grid-template-columns:1fr;}
  .summary{position:static;max-width:560px;}
  .check-layout{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .container{padding:0 18px;}
  .section{padding:60px 0;}
  .hero{padding-bottom:56px;background-position:center 20%;}
  .hero h1{font-size:31px;letter-spacing:-.2px;}
  .hero-sub{font-size:15.5px;}
  .trust-bar{grid-template-columns:repeat(2,1fr);}
  .section-head h2{font-size:23px;}
  .point-row{grid-template-columns:1fr;}
  .check-grid{grid-template-columns:1fr;}
  .issue-grid{grid-template-columns:1fr;}
  .cta-band{padding:32px 24px;}
  .cta-band h2{font-size:21px;}
  .btn{width:100%;}
  .hero-cta .btn{width:100%;}
  .summary .btn{width:100%;}
  .tl-item{padding-left:62px;}
  .tl-num{width:46px;height:46px;font-size:15px;}
  .tl-item::before{left:22px;top:46px;}
  .footer-grid{grid-template-columns:1fr;}
  .lead{padding:20px 22px;}
}
@media (max-width:520px){
  .hero h1{font-size:28px;}
  .hero-visual .float-card{position:static;width:100%;margin-top:16px;left:auto;bottom:auto;}
  .hero-visual .badge{right:8px;top:8px;}
  .faq summary{padding:16px 18px;font-size:15px;}
  .faq .answer{padding:0 18px 18px;font-size:14.5px;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

/* roulang page: category3 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --glass:rgba(255,255,255,.06);
  --glass-bd:rgba(255,255,255,.12);
  --brand:#35E0FF;
  --brand-2:#2C7BFF;
  --accent:#FFC24B;
  --accent-2:#7C5CFF;
  --ink-1:#EAF2FF;
  --ink-2:#A8B8D4;
  --ink-3:#6C7E9E;
  --ok:#2ED47A;
  --danger:#FF6B6B;
  --r-s:10px;
  --r-m:16px;
  --r-l:22px;
  --r-pill:999px;
  --sh-1:0 2px 10px rgba(0,0,0,.35);
  --sh-2:0 18px 50px -20px rgba(0,0,0,.7);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:56px;
  --sp-6:96px;
  --side-w:248px;
  --side-w-min:76px;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-1);
  color:var(--ink-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease)}
a:hover{color:#8ceeff}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3;letter-spacing:.01em}
p{margin:0}
:focus-visible{outline:3px solid rgba(53,224,255,.75);outline-offset:2px;border-radius:6px}
::selection{background:rgba(53,224,255,.3)}

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

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--side-w);
  display:flex;
  flex-direction:column;
  gap:18px;
  padding:22px 16px 20px;
  background:linear-gradient(180deg,rgba(16,26,46,.96),rgba(5,8,15,.98));
  border-right:1px solid var(--glass-bd);
  z-index:60;
  overflow-y:auto;
  scrollbar-width:none;
}
.sidebar::-webkit-scrollbar{display:none}
.sidebar-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink-1);font-weight:700;font-size:16px;line-height:1.25}
.brand:hover{color:var(--ink-1)}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),var(--brand-2));
  box-shadow:0 0 22px -4px rgba(53,224,255,.65);
}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:#04121f;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.side-nav{display:flex;flex-direction:column;gap:6px}
.side-link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  padding:11px 12px;
  border-radius:var(--r-s);
  color:var(--ink-2);
  font-size:15px;
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.side-link svg{width:19px;height:19px;flex:0 0 19px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.side-link:hover{background:rgba(255,255,255,.05);color:var(--ink-1)}
.side-link.is-active{
  background:var(--glass);
  border-color:rgba(53,224,255,.32);
  color:#fff;
}
.side-link.is-active::before{
  content:"";
  position:absolute;left:-16px;top:50%;transform:translateY(-50%);
  width:3px;height:22px;border-radius:0 3px 3px 0;
  background:var(--brand);
  box-shadow:0 0 12px 2px rgba(53,224,255,.7);
}
.side-link.is-active svg{stroke:var(--brand)}
.sidebar-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.support-card{
  background:var(--glass);
  border:1px solid var(--glass-bd);
  border-radius:var(--r-m);
  padding:14px;
  font-size:13px;
  color:var(--ink-2);
  line-height:1.65;
}
.support-card strong{display:block;color:var(--ink-1);font-size:13.5px;margin-bottom:4px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),filter .2s var(--ease);
}
.btn-primary{
  color:#04121f;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));
  border-color:rgba(255,255,255,.28);
  box-shadow:0 10px 30px -12px rgba(53,224,255,.85);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 16px 40px -14px rgba(53,224,255,.95);color:#04121f}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 18px -10px rgba(53,224,255,.7)}
.btn-ghost{
  color:var(--ink-1);
  background:var(--glass);
  border-color:var(--glass-bd);
  backdrop-filter:blur(14px) saturate(140%);
}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff;transform:translateY(-1px)}
.btn-block{width:100%}

/* ============ 顶栏（移动端） ============ */
.mobile-topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(10,17,32,.86);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--glass-bd);
}
.mobile-topbar .brand{font-size:15px}
.menu-btn{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--glass-bd);cursor:pointer;
}
.menu-btn svg{width:20px;height:20px;fill:none;stroke:var(--brand);stroke-width:1.8;stroke-linecap:round}
.backdrop{
  position:fixed;inset:0;background:rgba(0,0,0,.6);
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease);z-index:55;
}
.backdrop.is-open{opacity:1;pointer-events:auto}

/* ============ 页面主体 ============ */
.page{padding-left:var(--side-w);min-height:100vh;background:
  radial-gradient(900px 520px at 78% -6%,rgba(53,224,255,.10),transparent 62%),
  radial-gradient(700px 480px at 8% 22%,rgba(124,92,255,.10),transparent 60%),
  var(--bg-1);}
.grid-texture{
  position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:64px 64px;
}
main{position:relative;z-index:1}

/* 面包屑 */
.crumbs{padding:26px 0 0;font-size:13.5px;color:var(--ink-3)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--ink-3);opacity:.6}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--brand)}
.crumbs [aria-current]{color:var(--ink-1)}

/* Hero */
.hero{
  position:relative;
  margin-top:22px;
  border-radius:var(--r-l);
  overflow:hidden;
  border:1px solid var(--glass-bd);
  box-shadow:var(--sh-2);
  background-image:linear-gradient(120deg,rgba(5,8,15,.9) 8%,rgba(5,8,15,.72) 55%,rgba(10,17,32,.78)),url("/assets/images/backpic/back-3.png");
  background-size:cover;
  background-position:center;
}
.hero-inner{padding:52px 48px 46px;max-width:840px}
.tagline{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(124,92,255,.16);
  border:1px solid rgba(124,92,255,.42);
  color:#cfc4ff;font-size:13px;font-weight:600;
}
.hero h1{margin-top:18px;font-size:44px;font-weight:700;letter-spacing:.005em}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{margin-top:16px;font-size:17px;color:var(--ink-2);max-width:620px;line-height:1.8}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px}
.trust{
  margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
}
.trust-item{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--ink-2)}
.trust-item svg{width:20px;height:20px;flex:0 0 20px;fill:none;stroke:var(--brand);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* 板块 */
.section{padding:var(--sp-6) 0 0}
.section-head{max-width:760px;margin-bottom:34px}
.section-head h2{font-size:30px;position:relative;padding-left:16px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2));
  box-shadow:0 0 14px rgba(53,224,255,.55);
}
.section-head p{margin-top:14px;color:var(--ink-2);font-size:15.5px;line-height:1.85}

/* 对比矩阵 */
.matrix-block{
  background:var(--glass);
  border:1px solid var(--glass-bd);
  border-radius:var(--r-l);
  overflow:hidden;
  backdrop-filter:blur(18px) saturate(140%);
}
.matrix-head{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:20px 24px;border-bottom:1px solid rgba(255,255,255,.08);
  background:linear-gradient(90deg,rgba(53,224,255,.08),transparent 70%);
}
.matrix-head h3{font-size:18px}
.matrix-head span{font-size:13px;color:var(--ink-3)}
.matrix-scroll{overflow-x:auto;scrollbar-width:thin}
table.compare{width:100%;min-width:880px;border-collapse:collapse}
table.compare th,table.compare td{
  padding:17px 20px;text-align:left;font-size:14.6px;vertical-align:top;
  border-bottom:1px solid rgba(255,255,255,.07);
}
table.compare thead th{
  font-size:15px;color:var(--ink-1);font-weight:600;
  background:rgba(255,255,255,.03);
  position:sticky;top:0;z-index:3;
}
table.compare th:first-child,table.compare td:first-child{
  position:sticky;left:0;z-index:2;
  min-width:158px;width:158px;
  background:linear-gradient(90deg,rgba(10,17,32,.98),rgba(10,17,32,.9));
  color:var(--ink-2);font-weight:600;
}
table.compare thead th:first-child{z-index:4;background:#101a2e}
table.compare tbody tr:nth-child(even) td{background:rgba(255,255,255,.018)}
table.compare tbody tr:nth-child(even) td:first-child{background:rgba(10,17,32,.96)}
table.compare tbody tr:hover td{background:rgba(53,224,255,.05)}
table.compare td.col-main{
  background:rgba(53,224,255,.07)!important;
  box-shadow:inset 1px 0 0 rgba(53,224,255,.35),inset -1px 0 0 rgba(53,224,255,.35);
}
.reco-badge{
  display:inline-block;margin-left:8px;padding:2px 9px;border-radius:var(--r-pill);
  font-size:11.5px;font-weight:700;color:#04121f;
  background:linear-gradient(120deg,var(--brand),#8ceeff);
}
.mark-ok{color:var(--ok);font-weight:600}
.mark-warn{color:var(--accent);font-weight:600}
.mark-no{color:var(--ink-3);font-weight:600}
.matrix-note{
  padding:16px 24px;font-size:13.5px;color:var(--ink-3);
  border-top:1px solid rgba(255,255,255,.08);
}

/* 折叠详情 */
.details-wrap{display:grid;gap:12px}
details.fold{
  background:var(--glass);
  border:1px solid var(--glass-bd);
  border-radius:var(--r-m);
  padding:4px 20px;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
details.fold[open]{border-color:rgba(53,224,255,.34);background:rgba(53,224,255,.05)}
details.fold summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:12px;
  padding:16px 0;font-size:16px;font-weight:600;color:var(--ink-1);
}
details.fold summary::-webkit-details-marker{display:none}
details.fold summary .idx{
  width:26px;height:26px;flex:0 0 26px;border-radius:8px;
  display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--brand);
  background:rgba(53,224,255,.12);border:1px solid rgba(53,224,255,.3);
}
details.fold summary .chev{margin-left:auto;width:18px;height:18px;flex:0 0 18px;transition:transform .25s var(--ease)}
details.fold summary .chev svg{width:18px;height:18px;fill:none;stroke:var(--ink-3);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
details.fold[open] summary .chev{transform:rotate(180deg)}
details.fold .fold-body{padding:0 0 20px 38px;font-size:15px;line-height:1.9;color:var(--ink-2)}
details.fold .fold-body ul{display:grid;gap:8px;margin-top:10px}
details.fold .fold-body li{position:relative;padding-left:18px}
details.fold .fold-body li::before{
  content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 8px rgba(53,224,255,.7);
}

/* 状态卡 */
.state-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.state-card{
  position:relative;
  background:var(--glass);
  border:1px solid var(--glass-bd);
  border-radius:var(--r-l);
  padding:26px;
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.state-card:hover{transform:translateY(-4px);border-color:rgba(53,224,255,.35);box-shadow:var(--sh-2)}
.state-card .badge{
  display:inline-block;padding:4px 11px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;color:#d8ccff;
  background:rgba(124,92,255,.16);border:1px solid rgba(124,92,255,.4);
}
.state-card .badge.is-accent{color:#ffe0a3;background:rgba(255,194,75,.14);border-color:rgba(255,194,75,.4)}
.state-card .badge.is-ok{color:#b6f2d2;background:rgba(46,212,122,.14);border-color:rgba(46,212,122,.4)}
.state-card h3{margin-top:14px;font-size:19px}
.state-card p{margin-top:10px;color:var(--ink-2);font-size:14.6px;line-height:1.85}
.state-card .shot{
  margin-top:18px;border-radius:var(--r-m);overflow:hidden;
  border:1px solid rgba(255,255,255,.1);background:var(--bg-2);
}
.state-card .shot img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* 图文校验区 */
.check-panel{
  display:grid;grid-template-columns:1.15fr .85fr;gap:34px;align-items:center;
  background:linear-gradient(120deg,rgba(53,224,255,.08),rgba(124,92,255,.06) 60%,transparent);
  border:1px solid var(--glass-bd);
  border-radius:var(--r-l);
  padding:34px;
}
.check-panel h2{font-size:26px;padding-left:0}
.check-panel h2::before{display:none}
.check-list{margin-top:22px;display:grid;gap:14px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-2);line-height:1.8}
.check-list svg{width:20px;height:20px;flex:0 0 20px;margin-top:3px;fill:none;stroke:var(--ok);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.check-figure{border-radius:var(--r-m);overflow:hidden;border:1px solid rgba(255,255,255,.12);box-shadow:var(--sh-2)}
.check-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.check-figure figcaption{padding:12px 14px;font-size:13px;color:var(--ink-3);background:rgba(5,8,15,.7)}

/* FAQ */
.faq-list{display:grid;gap:0;border-top:1px solid rgba(255,255,255,.1)}
.faq-item{border-bottom:1px solid rgba(255,255,255,.1)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:14px;
  padding:20px 4px;font-size:16px;font-weight:600;color:var(--ink-1);
  transition:color .2s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary .q-mark{color:var(--brand);font-weight:700}
.faq-item summary .chev{margin-left:auto;width:18px;height:18px;transition:transform .25s var(--ease)}
.faq-item summary .chev svg{width:18px;height:18px;fill:none;stroke:var(--ink-3);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.faq-item[open] summary .chev{transform:rotate(180deg)}
.faq-item .answer{padding:0 4px 22px;font-size:15px;line-height:1.9;color:var(--ink-2);max-width:860px}

/* CTA 条 */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-l);
  border:1px solid rgba(255,194,75,.3);
  background:linear-gradient(115deg,rgba(255,194,75,.16),rgba(53,224,255,.1) 55%,rgba(124,92,255,.12));
  padding:34px 36px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(420px 200px at 88% 0%,rgba(255,194,75,.22),transparent 70%);
}
.cta-band h2{font-size:25px;position:relative;z-index:1}
.cta-band p{margin-top:8px;color:var(--ink-2);font-size:15px;max-width:600px;position:relative;z-index:1}
.cta-band .btn{position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* 页脚 */
.site-footer{
  margin-top:var(--sp-6);
  border-top:1px solid var(--glass-bd);
  background:linear-gradient(180deg,rgba(5,8,15,.4),rgba(5,8,15,.92));
  padding:56px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand strong{display:block;font-size:18px;color:var(--ink-1);margin-bottom:12px}
.footer-brand p{color:var(--ink-3);font-size:13.6px;line-height:1.85;max-width:340px}
.footer-col h4{font-size:15px;margin-bottom:14px;color:var(--ink-1)}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:var(--ink-2);font-size:14px}
.footer-col a:hover{color:var(--brand);text-decoration:underline}
.footer-col address{font-style:normal;color:var(--ink-3);font-size:13.6px;line-height:1.95}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:var(--ink-3);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .sidebar{width:var(--side-w-min);padding:20px 10px;align-items:center}
  .sidebar .brand-text{display:none}
  .sidebar-foot{width:100%}
  .sidebar-foot .btn{padding:12px 8px;font-size:0}
  .sidebar-foot .btn svg{width:20px;height:20px}
  .support-card{display:none}
  .side-link{justify-content:center;padding:12px 0}
  .side-link span{display:none}
  .side-link.is-active::before{left:-10px}
  .page{padding-left:var(--side-w-min)}
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr}
  .footer-grid .footer-col:last-child{grid-column:1/-1}
}
@media (max-width:1023px){
  .mobile-topbar{display:flex}
  .sidebar{
    width:290px;
    max-width:86vw;
    padding:20px 18px;
    align-items:stretch;
    transform:translateX(100%);
    transition:transform .3s var(--ease);
    box-shadow:-20px 0 60px rgba(0,0,0,.6);
  }
  .sidebar.is-open{transform:translateX(0)}
  .sidebar .brand-text{display:inline}
  .sidebar-foot{width:auto}
  .sidebar-foot .btn{padding:12px 22px;font-size:15px}
  .sidebar-foot .btn svg{width:18px;height:18px}
  .support-card{display:block}
  .side-link{justify-content:flex-start;padding:11px 12px}
  .side-link span{display:inline}
  .side-link.is-active::before{left:-18px}
  .page{padding-left:0;padding-top:60px}
  .hero-inner{padding:40px 28px 36px}
  .hero h1{font-size:34px}
  .check-panel{grid-template-columns:1fr;padding:26px}
  .state-grid{grid-template-columns:1fr 1fr}
  .section{padding:64px 0 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .hero-inner{padding:32px 20px 30px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15.5px}
  .trust{grid-template-columns:1fr 1fr;gap:12px}
  .section-head h2{font-size:22px}
  .check-panel h2{font-size:22px}
  .state-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 20px}
  .cta-band h2{font-size:21px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:56px 0 0}
  .site-footer{margin-top:56px}
}
@media (max-width:479px){
  .grid-texture{display:none}
  .hero h1{font-size:27px}
  .btn{padding:11px 18px;font-size:14.5px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  table.compare th,table.compare td{padding:14px 14px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: category4 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1120;
  --bg-2:#101A2E;
  --bg-3:#16223A;
  --glass:rgba(255,255,255,.06);
  --glass-strong:rgba(255,255,255,.09);
  --glass-bd:rgba(255,255,255,.12);
  --bd-soft:rgba(255,255,255,.08);
  --brand:#35E0FF;
  --brand-2:#2C7BFF;
  --accent:#FFC24B;
  --accent-2:#7C5CFF;
  --ok:#2ED47A;
  --danger:#FF6B6B;
  --ink-1:#EAF2FF;
  --ink-2:#A8B8D4;
  --ink-3:#6C7E9E;
  --r-s:10px;
  --r-m:16px;
  --r-l:22px;
  --r-pill:999px;
  --sh-1:0 2px 10px rgba(0,0,0,.35);
  --sh-2:0 18px 50px -20px rgba(0,0,0,.7);
  --glow-brand:0 0 0 1px rgba(53,224,255,.4),0 14px 36px -16px rgba(53,224,255,.75);
  --glow-accent:0 0 0 1px rgba(255,194,75,.4),0 14px 36px -16px rgba(255,194,75,.7);
  --nav-w:248px;
  --top-h:60px;
  --ease:cubic-bezier(.2,.8,.2,1);
  --maxw:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:
    radial-gradient(900px 520px at 78% -10%,rgba(53,224,255,.10),transparent 62%),
    radial-gradient(760px 480px at 8% 12%,rgba(124,92,255,.10),transparent 60%),
    var(--bg-1);
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.05;
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#8bf0ff}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-1);font-weight:650;line-height:1.28}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}
:focus-visible{outline:3px solid rgba(53,224,255,.85);outline-offset:2px;border-radius:6px}
::selection{background:rgba(53,224,255,.28);color:#fff}

/* ============ 容器与骨架 ============ */
.shell{position:relative;z-index:1}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.page-main{padding-left:var(--nav-w);transition:padding-left .2s var(--ease)}
.section{padding:96px 0;position:relative}
.section + .section{padding-top:0}
.section-head{max-width:760px;margin-bottom:36px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--brand);letter-spacing:.06em;
  background:rgba(53,224,255,.09);
  border:1px solid rgba(53,224,255,.24);
  border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand)}
.section-title{font-size:30px;letter-spacing:-.4px;margin-bottom:12px}
.section-desc{font-size:15.5px;color:var(--ink-2);line-height:1.85}
.divider{height:1px;background:var(--bd-soft);border:0;margin:0}

/* ============ 左侧导航 ============ */
.side-nav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:linear-gradient(180deg,rgba(16,26,46,.92),rgba(10,17,32,.96));
  border-right:1px solid var(--glass-bd);
  backdrop-filter:blur(18px) saturate(140%);
  display:flex;flex-direction:column;gap:20px;
  padding:22px 16px 20px;
  z-index:60;
  overflow-y:auto;
  scrollbar-width:none;
}
.side-nav::-webkit-scrollbar{display:none}
.side-brand{display:flex;align-items:center;gap:11px;padding:4px 6px 16px;border-bottom:1px solid var(--bd-soft)}
.side-brand .mark{
  width:38px;height:38px;border-radius:12px;flex:none;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),var(--brand-2));
  color:#04121c;
  box-shadow:var(--glow-brand);
}
.side-brand .mark svg{width:21px;height:21px;stroke-width:2}
.side-brand b{display:block;color:var(--ink-1);font-size:15px;font-weight:650;line-height:1.35;letter-spacing:.01em}
.side-brand small{display:block;color:var(--ink-3);font-size:12px;letter-spacing:.08em}
.side-group{display:flex;flex-direction:column;gap:6px}
.side-label{font-size:12px;color:var(--ink-3);letter-spacing:.14em;padding:0 8px 6px}
.side-link{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:11px 12px;border-radius:var(--r-s);
  color:var(--ink-2);font-size:14.5px;
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.side-link svg{color:var(--ink-3);transition:color .2s var(--ease)}
.side-link:hover{background:rgba(255,255,255,.04);color:var(--ink-1)}
.side-link:hover svg{color:var(--brand)}
.side-link.is-active{
  background:var(--glass);
  border-color:var(--glass-bd);
  color:var(--ink-1);
  font-weight:600;
}
.side-link.is-active::before{
  content:"";position:absolute;left:-16px;top:8px;bottom:8px;width:3px;
  border-radius:0 3px 3px 0;background:var(--brand);
  box-shadow:0 0 14px var(--brand);
}
.side-link.is-active svg{color:var(--brand)}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:18px;border-top:1px solid var(--bd-soft)}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 14px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:650;color:#04121c;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));
  box-shadow:var(--glow-brand);
  transition:transform .2s var(--ease),filter .2s var(--ease),box-shadow .2s var(--ease);
}
.side-cta:hover{color:#04121c;transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(53,224,255,.5),0 18px 42px -16px rgba(53,224,255,.9)}
.side-cta:active{transform:translateY(1px);filter:brightness(.98)}
.side-help{
  background:var(--glass);border:1px solid var(--glass-bd);border-radius:var(--r-m);
  padding:14px;font-size:13px;color:var(--ink-3);line-height:1.7;
}
.side-help strong{display:block;color:var(--ink-1);font-size:13.5px;margin-bottom:4px}

/* ============ 移动端顶栏与抽屉 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:var(--top-h);
  align-items:center;justify-content:space-between;gap:12px;
  padding:0 16px;z-index:70;
  background:rgba(10,17,32,.9);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--glass-bd);
}
.topbar-logo{display:flex;align-items:center;gap:10px;color:var(--ink-1);font-weight:650;font-size:15px}
.topbar-logo .mark{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(140deg,var(--brand),var(--brand-2));color:#04121c}
.topbar-logo .mark svg{width:17px;height:17px;stroke-width:2}
.menu-btn{
  display:grid;place-items:center;width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--glass-bd);color:var(--ink-1);
  cursor:pointer;transition:background .2s var(--ease);
}
.menu-btn:hover{background:var(--glass-strong)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s;z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ 通用按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:650;cursor:pointer;border:1px solid transparent;
  transition:transform .2s var(--ease),filter .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn svg{width:18px;height:18px}
.btn-primary{
  color:#04121c;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));
  box-shadow:var(--glow-brand);
}
.btn-primary:hover{color:#04121c;transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(53,224,255,.55),0 20px 46px -18px rgba(53,224,255,.95)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.97)}
.btn-ghost{
  color:var(--ink-1);background:var(--glass);border-color:var(--glass-bd);
}
.btn-ghost:hover{color:var(--ink-1);background:var(--glass-strong);border-color:rgba(53,224,255,.4);transform:translateY(-1px)}
.btn-accent{
  color:#1c1200;background:linear-gradient(120deg,var(--accent),#ffdf9a);
  box-shadow:var(--glow-accent);
}
.btn-accent:hover{color:#1c1200;transform:translateY(-1px);filter:brightness(1.05)}
.btn-sm{padding:9px 18px;font-size:13.5px}

/* ============ 面包屑 ============ */
.crumb{padding:26px 0 0;font-size:13.5px;color:var(--ink-3)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--brand);text-decoration:underline}
.crumb li[aria-current]{color:var(--brand)}
.crumb .sep{color:var(--ink-3);opacity:.6}

/* ============ Hero 横向 Banner ============ */
.hero{
  position:relative;margin-top:22px;border-radius:var(--r-l);overflow:hidden;
  border:1px solid var(--glass-bd);
  background:
    linear-gradient(105deg,rgba(5,8,15,.86),rgba(10,17,32,.72) 55%,rgba(10,17,32,.55)),
    radial-gradient(720px 420px at 82% 8%,rgba(53,224,255,.22),transparent 62%),
    url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  box-shadow:var(--sh-2);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(560px 320px at 6% 100%,rgba(124,92,255,.18),transparent 60%);
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;
  padding:56px 48px;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:6px 15px;border-radius:var(--r-pill);
  background:rgba(255,194,75,.12);border:1px solid rgba(255,194,75,.32);
  color:var(--accent);font-size:13px;letter-spacing:.04em;margin-bottom:18px;
}
.hero-badge svg{width:15px;height:15px}
.hero-title{font-size:clamp(30px,3.3vw,44px);line-height:1.16;letter-spacing:-.6px;margin-bottom:16px}
.hero-title em{font-style:normal;background:linear-gradient(100deg,var(--brand),#a9f4ff 55%,var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:16.5px;color:var(--ink-2);max-width:520px;line-height:1.85;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.trust-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:12px;
  padding-top:22px;border-top:1px solid var(--bd-soft);
}
.trust-item{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--ink-2)}
.trust-item svg{color:var(--brand);width:17px;height:17px}
.hero-visual{position:relative;min-height:300px}
.hv-main{
  position:relative;border-radius:var(--r-m);overflow:hidden;
  border:1px solid var(--glass-bd);box-shadow:var(--sh-2);
  background:var(--bg-2);
}
.hv-main img{width:100%;aspect-ratio:16/11;object-fit:cover}
.hv-card{
  position:absolute;right:-10px;bottom:-26px;width:206px;
  border-radius:var(--r-m);overflow:hidden;
  border:1px solid rgba(53,224,255,.35);
  background:rgba(10,17,32,.86);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--glow-brand);
}
.hv-card img{width:100%;aspect-ratio:16/10;object-fit:cover;opacity:.92}
.hv-card span{display:block;padding:10px 13px;font-size:12.5px;color:var(--ink-1)}
.hv-badge{
  position:absolute;left:-12px;top:-14px;
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:linear-gradient(120deg,var(--accent),#ffe3a8);
  color:#1c1200;font-size:12.5px;font-weight:700;
  box-shadow:var(--glow-accent);letter-spacing:.02em;
}

/* ============ 标签云 ============ */
.intro-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:36px;align-items:start}
.intro-text p{font-size:15.5px;line-height:1.9;margin-bottom:14px}
.intro-text p:last-child{margin-bottom:0}
.tag-cloud{
  background:var(--glass);border:1px solid var(--glass-bd);border-radius:var(--r-m);
  padding:22px;backdrop-filter:blur(18px) saturate(140%);
}
.tag-cloud h3{font-size:15px;margin-bottom:14px}
.tag-cloud .tags{display:flex;flex-wrap:wrap;gap:9px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--r-pill);font-size:13px;
  color:var(--ink-2);background:rgba(255,255,255,.05);
  border:1px solid var(--glass-bd);cursor:default;
  transition:all .2s var(--ease);
}
.tag:hover{color:var(--ink-1);border-color:rgba(53,224,255,.45);background:rgba(53,224,255,.1);transform:translateY(-1px)}
.tag.hot{color:var(--accent);border-color:rgba(255,194,75,.35);background:rgba(255,194,75,.1)}
.tag.new{color:#c3b3ff;border-color:rgba(124,92,255,.4);background:rgba(124,92,255,.12)}

/* ============ 瀑布卡片 ============ */
.waterfall{column-count:2;column-gap:24px}
.w-card{
  break-inside:avoid;
  display:block;
  margin-bottom:24px;
  background:linear-gradient(180deg,rgba(16,26,46,.92),rgba(10,17,32,.92));
  border:1px solid var(--glass-bd);border-radius:var(--r-m);
  overflow:hidden;
  transition:transform .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.w-card:hover{transform:translateY(-4px);border-color:rgba(53,224,255,.35);box-shadow:var(--sh-2)}
.w-media{position:relative;background:var(--bg-2)}
.w-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.w-card:hover .w-media img{transform:scale(1.03)}
.r-16-10 img,.r-16-10{aspect-ratio:16/10}
.r-4-3 img,.r-4-3{aspect-ratio:4/3}
.r-16-9 img,.r-16-9{aspect-ratio:16/9}
.r-4-5 img,.r-4-5{aspect-ratio:4/5}
.r-3-4 img,.r-3-4{aspect-ratio:3/4}
.w-flag{
  position:absolute;left:14px;top:14px;z-index:2;
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;
  background:rgba(124,92,255,.22);border:1px solid rgba(124,92,255,.5);
  color:#cbbcff;backdrop-filter:blur(10px);
}
.w-flag.warm{background:rgba(255,194,75,.2);border-color:rgba(255,194,75,.5);color:#ffd98a}
.w-flag.cool{background:rgba(53,224,255,.18);border-color:rgba(53,224,255,.5);color:#9ef1ff}
.w-body{padding:20px 22px 22px}
.w-title{font-size:19px;margin-bottom:10px;line-height:1.45}
.w-desc{font-size:14.5px;line-height:1.8;color:var(--ink-2);margin-bottom:14px}
.w-tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:16px}
.chip{
  font-size:12px;padding:4px 11px;border-radius:var(--r-pill);
  color:var(--ink-3);background:rgba(255,255,255,.05);border:1px solid var(--bd-soft);
}
.w-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--bd-soft);
  font-size:13px;color:var(--ink-3);flex-wrap:wrap;
}
.w-meta .go{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.w-meta .go svg{width:15px;height:15px;transition:transform .2s var(--ease)}
.w-card:hover .w-meta .go svg{transform:translateX(3px)}

/* ============ 领取流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.steps::before{
  content:"";position:absolute;left:6%;right:6%;top:26px;height:1px;
  background:linear-gradient(90deg,rgba(53,224,255,.5),rgba(124,92,255,.4),rgba(255,194,75,.4));
  opacity:.5;
}
.step{
  position:relative;padding:24px 20px 22px;
  background:var(--glass);border:1px solid var(--glass-bd);border-radius:var(--r-m);
  backdrop-filter:blur(18px) saturate(140%);
  transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.step:hover{transform:translateY(-4px);border-color:rgba(53,224,255,.35)}
.step-num{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  font-size:17px;font-weight:700;color:var(--ink-1);
  background:linear-gradient(140deg,rgba(53,224,255,.22),rgba(44,123,255,.16));
  border:1px solid rgba(53,224,255,.35);margin-bottom:14px;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:16.5px;margin-bottom:8px}
.step p{font-size:14px;color:var(--ink-2);line-height:1.8}

/* ============ 领取须知 + 数据块 ============ */
.check-wrap{display:grid;grid-template-columns:1.15fr 1fr;gap:28px;align-items:start}
.notice-panel{
  background:var(--glass);border:1px solid var(--glass-bd);border-radius:var(--r-m);
  padding:26px 28px;backdrop-filter:blur(18px) saturate(140%);
}
.notice-panel h3{font-size:18px;margin-bottom:16px}
.notice-list li{
  display:flex;gap:12px;padding:13px 0;border-bottom:1px solid var(--bd-soft);
  font-size:14.5px;line-height:1.8;
}
.notice-list li:last-child{border-bottom:0;padding-bottom:0}
.notice-list svg{color:var(--ok);width:18px;height:18px;margin-top:5px}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.stat{
  background:linear-gradient(160deg,rgba(22,34,58,.95),rgba(10,17,32,.95));
  border:1px solid var(--glass-bd);border-radius:var(--r-m);
  padding:22px 20px;
  transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.stat:hover{transform:translateY(-4px);border-color:rgba(53,224,255,.3)}
.stat-num{
  font-size:34px;font-weight:700;color:var(--ink-1);line-height:1.1;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(110deg,var(--brand),#b7f2ff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:8px;
}
.stat-label{font-size:14px;color:var(--ink-2)}
.stat-label small{display:block;color:var(--ink-3);font-size:12.5px;margin-top:4px}

/* ============ FAQ ============ */
.faq{max-width:900px;border-top:1px solid var(--bd-soft)}
.faq details{border-bottom:1px solid var(--bd-soft)}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 4px;font-size:16px;font-weight:600;color:var(--ink-1);
  transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--brand)}
.faq summary .arrow{
  width:30px;height:30px;border-radius:50%;flex:none;
  display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--glass-bd);
  transition:transform .3s var(--ease),background .2s var(--ease);
}
.faq summary .arrow svg{width:15px;height:15px;stroke-width:2}
.faq details[open] summary .arrow{transform:rotate(180deg);background:rgba(53,224,255,.14);border-color:rgba(53,224,255,.4)}
.faq .answer{padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:760px}

/* ============ 底部 CTA 条 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-l);
  border:1px solid rgba(255,194,75,.28);
  background:
    linear-gradient(100deg,rgba(5,8,15,.9),rgba(16,26,46,.86)),
    radial-gradient(600px 320px at 88% 10%,rgba(255,194,75,.24),transparent 62%);
  padding:44px 46px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--sh-2);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(102deg,transparent 34%,rgba(255,194,75,.12) 50%,transparent 66%);
}
.cta-band .cta-copy{position:relative;z-index:1;max-width:620px}
.cta-band h2{font-size:26px;margin-bottom:10px}
.cta-band p{font-size:15px;color:var(--ink-2);line-height:1.85}
.cta-band .cta-actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;
  border-top:1px solid var(--glass-bd);
  background:linear-gradient(180deg,rgba(10,17,32,.6),rgba(5,8,15,.95));
  padding:56px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px}
.footer-brand strong{display:block;font-size:17px;color:var(--ink-1);margin-bottom:12px}
.footer-brand p{font-size:13.5px;color:var(--ink-3);line-height:1.85;max-width:320px}
.footer-col h4{font-size:14.5px;color:var(--ink-1);margin-bottom:14px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--ink-2)}
.footer-col a:hover{color:var(--brand);text-decoration:underline}
.footer-col address{font-style:normal;font-size:13.5px;color:var(--ink-3);line-height:1.9}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid var(--bd-soft);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:var(--ink-3);
}

/* ============ 滚动动画 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1279px) and (min-width:1024px){
  :root{--nav-w:76px}
  .side-nav{padding:20px 12px;align-items:center}
  .side-brand{justify-content:center;padding-bottom:14px;width:100%}
  .side-brand .txt{display:none}
  .side-link{justify-content:center;padding:12px 0;width:100%}
  .side-link span{display:none}
  .side-label{display:none}
  .side-cta span{display:none}
  .side-cta{padding:12px 0;width:100%}
  .side-help{display:none}
  .hero-inner{padding:46px 36px;gap:32px}
}
@media (max-width:1023px){
  :root{--nav-w:0px}
  .page-main{padding-left:0;padding-top:var(--top-h)}
  .topbar{display:flex}
  .side-nav{
    width:284px;left:auto;right:0;
    transform:translateX(103%);
    transition:transform .3s var(--ease);
    border-right:0;border-left:1px solid var(--glass-bd);
    z-index:90;padding:22px 18px;
  }
  .side-nav.is-open{transform:translateX(0)}
  .side-link.is-active::before{left:-18px}
  .hero-inner{grid-template-columns:1fr;padding:38px 26px}
  .hero-visual{min-height:auto;max-width:520px}
  .hv-card{bottom:-18px;right:0;width:180px}
  .intro-grid{grid-template-columns:1fr;gap:26px}
  .steps{grid-template-columns:1fr 1fr}
  .steps::before{display:none}
  .check-wrap{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:64px 0}
  .section + .section{padding-top:0}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .waterfall{column-count:1}
  .trust-row{grid-template-columns:1fr 1fr;gap:14px}
  .hero-title{font-size:30px}
  .section-title{font-size:22px}
  .cta-band{padding:32px 24px}
  .cta-band h2{font-size:22px}
  .stat-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .side-cta{width:100%}
}
@media (max-width:520px){
  body::before{display:none}
  .hero-inner{padding:30px 18px}
  .hero-sub{font-size:15px}
  .hero-actions .btn{width:100%}
  .steps{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .w-body{padding:18px}
  .w-title{font-size:17.5px}
  .cta-band .cta-actions{width:100%}
  .cta-band .cta-actions .btn{width:100%}
}