/* roulang page: index */
:root{
    --ink-900:#07121E;
    --ink-800:#0B1A29;
    --panel:#122539;
    --primary:#143A5C;
    --glow:#38E0C4;
    --glow-deep:#22B9A4;
    --violet:#8E7BFF;
    --text-hi:#E7EFF8;
    --text-mid:#9FB3C8;
    --text-low:#6B8098;
    --hairline:rgba(255,255,255,.08);
    --hi-line:inset 0 1px 0 rgba(255,255,255,.06);
    --shadow:0 24px 60px rgba(0,0,0,.45);
    --r-card:14px;
    --r-panel:20px;
    --r-btn:10px;
    --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    background:var(--ink-900);
    color:var(--text-hi);
    font-family:var(--font);
    font-size:16px;
    line-height:1.75;
    letter-spacing:0;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  ::selection{background:rgba(56,224,196,.28);}
  .num{font-variant-numeric:tabular-nums;}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
  .section{padding:96px 0;}
  .section-sm{padding:72px 0;}
  .hairline{height:1px;background:var(--hairline);border:0;margin:0;}

  /* 头部导航 */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:transparent;
    border-bottom:1px solid transparent;
    transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
  }
  .site-header.is-scrolled{
    background:rgba(7,18,30,.85);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border-bottom-color:var(--hairline);
  }
  .header-top{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:16px;padding-bottom:12px;}
  .brand{display:inline-flex;align-items:center;gap:12px;}
  .brand-mark{
    width:38px;height:38px;border-radius:10px;flex:none;
    display:grid;place-items:center;
    background:linear-gradient(150deg,var(--primary),var(--ink-800));
    border:1px solid rgba(56,224,196,.35);
    color:var(--glow);font-weight:700;font-size:17px;
    clip-path:polygon(0 0,100% 0,100% 74%,72% 100%,0 100%);
    box-shadow:var(--hi-line);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-text strong{font-size:18px;font-weight:700;letter-spacing:-.01em;}
  .brand-text em{font-style:normal;font-size:11px;color:var(--text-low);letter-spacing:.18em;}
  .header-actions{display:flex;align-items:center;gap:18px;}
  .link-sub{font-size:14px;color:var(--text-mid);transition:color .2s;}
  .link-sub:hover{color:var(--glow);}
  .header-nav{padding-bottom:14px;}
  .chip-nav{display:flex;gap:10px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none;}
  .chip-nav::-webkit-scrollbar{display:none;}
  .chip{
    display:inline-flex;align-items:center;justify-content:center;
    height:34px;padding:0 14px;border-radius:999px;
    font-size:14px;font-weight:500;color:var(--text-mid);
    background:rgba(18,37,57,.55);
    border:1px solid var(--hairline);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    transition:color .2s,border-color .2s,background .2s;
    white-space:nowrap;
  }
  .chip:hover{color:var(--text-hi);border-color:rgba(56,224,196,.45);}
  .chip.is-active{
    background:linear-gradient(180deg,var(--glow),var(--glow-deep));
    color:#06141F;font-weight:600;border-color:transparent;
  }
  .chip-mini{height:22px;padding:0 10px;font-size:12px;font-weight:600;color:var(--glow);background:rgba(56,224,196,.10);border:1px solid rgba(56,224,196,.30);border-radius:999px;display:inline-flex;align-items:center;}
  .chip-violet{color:var(--violet);background:rgba(142,123,255,.12);border-color:rgba(142,123,255,.32);}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--r-btn);
    font-size:15px;font-weight:600;
    border:1px solid transparent;
    transition:transform .2s,box-shadow .25s,background .25s,color .25s,border-color .25s;
  }
  .btn-primary{background:linear-gradient(180deg,var(--glow),var(--glow-deep));color:#06141F;}
  .btn-primary:hover{box-shadow:0 0 0 1px rgba(56,224,196,.6),0 0 28px rgba(56,224,196,.35);transform:translateY(-1px);}
  .btn-primary:active{transform:scale(.98);}
  .btn-ghost{background:transparent;border-color:rgba(56,224,196,.45);color:var(--glow);}
  .btn-ghost:hover{background:rgba(56,224,196,.10);transform:translateY(-1px);}
  .btn-ghost:active{transform:scale(.98);}
  .btn-lg{height:48px;padding:0 26px;}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;}
  .btn-muted{background:rgba(18,37,57,.7);border-color:var(--hairline);color:var(--text-hi);}
  .btn-muted:hover{border-color:rgba(56,224,196,.4);color:var(--glow);}
  .btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--glow);outline-offset:2px;border-radius:8px;}
  .btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;transform:none;cursor:not-allowed;}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--glow);border-bottom:1px solid rgba(56,224,196,.35);padding-bottom:2px;transition:color .2s,border-color .2s;}
  .link-arrow:hover{color:#7BF3E0;border-color:#7BF3E0;}

  /* 通用玻璃卡 */
  .glass{
    position:relative;
    background:rgba(18,37,57,.55);
    border:1px solid var(--hairline);
    border-radius:var(--r-card);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    box-shadow:var(--hi-line);
  }
  .glass::before{
    content:"";position:absolute;top:0;left:18px;right:18px;height:1px;
    background:linear-gradient(90deg,transparent,rgba(56,224,196,.55),transparent);
    opacity:.55;pointer-events:none;
  }
  .glass-hover{transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;}
  .glass-hover:hover{transform:translateY(-2px);border-color:rgba(56,224,196,.35);}

  /* Hero */
  .hero{position:relative;overflow:hidden;padding:56px 0 0;}
  .hero-bg{position:absolute;inset:0;z-index:0;background:var(--ink-900);}
  .hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.5;}
  .hero-bg .grid-lines{
    position:absolute;inset:0;z-index:1;
    background-image:linear-gradient(rgba(56,224,196,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(56,224,196,.055) 1px,transparent 1px);
    background-size:64px 64px;
  }
  .hero-bg .veil{
    position:absolute;inset:0;z-index:2;
    background:linear-gradient(100deg,rgba(7,18,30,.97) 0%,rgba(7,18,30,.86) 42%,rgba(7,18,30,.42) 100%);
  }
  .hero-inner{position:relative;z-index:3;padding-top:40px;}
  .hero-copy{max-width:760px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;color:var(--glow);font-weight:600;letter-spacing:.02em;
    padding:6px 12px;border-radius:999px;
    background:rgba(56,224,196,.08);border:1px solid rgba(56,224,196,.24);
  }
  .hero h1{
    margin-top:22px;
    font-size:clamp(30px,4.4vw,46px);
    line-height:1.2;font-weight:700;letter-spacing:-.01em;
    color:var(--text-hi);
  }
  .hero-sub{margin-top:18px;font-size:17px;line-height:1.7;color:var(--text-mid);max-width:620px;}
  .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
  .hero-tag{font-size:13px;color:var(--text-mid);padding:6px 12px;border-radius:999px;border:1px solid var(--hairline);background:rgba(18,37,57,.5);}

  /* 数据条 */
  .stat-strip{
    position:relative;z-index:3;
    margin-top:52px;
    display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
    background:rgba(11,26,41,.88);
    border:1px solid var(--hairline);
    border-radius:18px 0 18px 18px;
    clip-path:polygon(0 0,calc(100% - 22px) 0,100% 22px,100% 100%,0 100%);
    overflow:hidden;
    box-shadow:var(--hi-line);
  }
  .stat-item{padding:22px 24px;border-right:1px solid var(--hairline);}
  .stat-item:last-child{border-right:0;}
  .stat-num{font-size:clamp(26px,3.2vw,38px);font-weight:700;letter-spacing:-.01em;font-variant-numeric:tabular-nums;line-height:1.1;}
  .stat-num b{color:var(--glow);font-weight:700;}
  .stat-label{margin-top:6px;font-size:13px;color:var(--text-mid);}

  /* 板块标题 */
  .sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:36px;}
  .sec-title{font-size:clamp(26px,3vw,32px);font-weight:700;letter-spacing:-.01em;line-height:1.3;}
  .sec-desc{margin-top:10px;font-size:15px;color:var(--text-mid);max-width:620px;}
  .sec-kicker{font-size:13px;font-weight:600;color:var(--glow);letter-spacing:.08em;margin-bottom:10px;display:block;}

  /* 权益对比表 */
  .table-shell{position:relative;border-radius:var(--r-panel);border:1px solid var(--hairline);background:rgba(11,26,41,.7);overflow:hidden;}
  .table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;}
  .compare{width:100%;min-width:760px;border-collapse:separate;border-spacing:0;font-size:15px;}
  .compare thead th{
    position:sticky;top:0;z-index:3;
    background:#0E1F31;
    padding:18px;
    text-align:left;
    font-size:14px;font-weight:600;color:var(--text-mid);
    border-bottom:1px solid var(--hairline);
  }
  .compare thead th:first-child{color:var(--text-hi);font-size:15px;}
  .compare tbody th,.compare tbody td{
    padding:16px 18px;text-align:left;font-weight:400;
    border-bottom:1px solid var(--hairline);
    color:var(--text-mid);
  }
  .compare tbody tr:last-child th,.compare tbody tr:last-child td{border-bottom:0;}
  .compare tbody tr:nth-child(even) td,.compare tbody tr:nth-child(even) th{background:rgba(18,37,57,.35);}
  .compare tbody th{
    position:sticky;left:0;z-index:2;
    background:#0B1A29;color:var(--text-hi);font-weight:600;
    min-width:210px;box-shadow:1px 0 0 var(--hairline);
  }
  .compare tbody tr:nth-child(even) th{background:#0D1E30;}
  .col-rec{background:rgba(56,224,196,.06)!important;border-left:1px solid rgba(56,224,196,.28);border-right:1px solid rgba(56,224,196,.28);}
  .compare thead th.col-rec{color:var(--text-hi);background:#10293A!important;}
  .yes{color:var(--glow);font-weight:700;}
  .no{color:var(--text-low);}
  .td-note{display:flex;flex-direction:column;gap:6px;align-items:flex-start;}
  .rec-badge{display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;background:linear-gradient(180deg,var(--glow),var(--glow-deep));color:#06141F;}
  .note-line{font-size:13px;color:var(--text-low);margin-top:18px;}

  /* 等级亮点 - 非对称 */
  .tier-grid{display:grid;grid-template-columns:1fr;gap:24px;}
  .tier-card{padding:26px;display:flex;flex-direction:column;gap:16px;min-height:160px;}
  .tier-card.is-main{
    background:rgba(16,41,58,.75);
    border-color:rgba(56,224,196,.38);
    box-shadow:0 24px 60px rgba(0,0,0,.45),0 0 40px rgba(56,224,196,.10);
    clip-path:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,0 100%);
  }
  .tier-name{font-size:19px;font-weight:700;}
  .tier-line{font-size:14px;color:var(--text-mid);}
  .tier-list{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-mid);}
  .tier-list li{display:flex;gap:10px;align-items:flex-start;}
  .tier-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--glow);margin-top:9px;flex:none;box-shadow:0 0 10px rgba(56,224,196,.6);}
  .tier-price{margin-top:auto;display:flex;align-items:baseline;gap:8px;}
  .tier-price b{font-size:30px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:-.01em;}
  .tier-price span{font-size:13px;color:var(--text-low);}

  /* 专属内容预览 */
  .exclusive-grid{display:grid;grid-template-columns:1fr;gap:24px;}
  .ex-list{padding:8px 0;}
  .ex-item{
    display:flex;flex-wrap:wrap;align-items:center;gap:14px;
    padding:18px 20px;border-bottom:1px solid var(--hairline);
    transition:background .25s,border-color .25s;
  }
  .ex-item:first-child{border-top:1px solid var(--hairline);}
  .ex-item:hover{background:rgba(56,224,196,.05);}
  .ex-main{flex:1 1 320px;min-width:0;}
  .ex-title{font-size:16px;font-weight:600;color:var(--text-hi);}
  .ex-desc{margin-top:6px;font-size:14px;color:var(--text-mid);overflow:hidden;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;}
  .ex-time{font-size:13px;color:var(--text-low);font-variant-numeric:tabular-nums;flex:none;}
  .ex-cover{position:relative;border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--hairline);}
  .ex-cover .ratio{aspect-ratio:16/9;background:#102539;background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.03) 0 2px,transparent 2px 10px);}
  .ex-cover img{width:100%;height:100%;object-fit:cover;}
  .ex-shade{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:flex-end;gap:10px;padding:22px;background:linear-gradient(180deg,rgba(7,18,30,.10) 30%,rgba(7,18,30,.88) 100%);}
  .ex-shade h3{font-size:18px;font-weight:700;line-height:1.45;}

  /* 最新信息卡片 */
  .post-grid{display:grid;grid-template-columns:1fr;gap:24px;}
  .post-card{overflow:hidden;display:flex;flex-direction:column;}
  .post-card-link{display:flex;flex-direction:column;height:100%;}
  .post-card::after{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(56,224,196,.9),transparent);
    opacity:0;transition:opacity .25s;pointer-events:none;
  }
  .post-card:hover::after{opacity:1;}
  .post-cover{aspect-ratio:16/9;background:#102539;overflow:hidden;}
  .post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
  .post-card:hover .post-cover img{transform:scale(1.04);}
  .post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
  .post-title{font-size:18px;font-weight:700;line-height:1.5;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
  .post-summary{font-size:14px;color:var(--text-mid);line-height:1.7;overflow:hidden;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;}
  .post-meta{margin-top:auto;font-size:13px;color:var(--text-low);font-variant-numeric:tabular-nums;}
  .empty-state{
    grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:10px;
    padding:56px 24px;text-align:center;border-radius:var(--r-panel);
    border:1px dashed rgba(255,255,255,.14);background:rgba(18,37,57,.35);
  }
  .empty-state svg{color:var(--text-low);}
  .empty-state strong{font-size:16px;color:var(--text-hi);}
  .empty-state p{font-size:14px;color:var(--text-low);}
  .load-more{margin-top:36px;display:flex;justify-content:center;gap:10px;}
  .page-btn{
    width:38px;height:38px;display:grid;place-items:center;border-radius:var(--r-btn);
    border:1px solid var(--hairline);color:var(--text-mid);font-size:14px;font-variant-numeric:tabular-nums;
    transition:border-color .2s,color .2s,background .2s;
  }
  .page-btn:hover{border-color:rgba(56,224,196,.45);color:var(--text-hi);}
  .page-btn.is-current{border-color:var(--glow);color:var(--glow);box-shadow:0 0 18px rgba(56,224,196,.25);}

  /* FAQ */
  .faq-list{max-width:900px;}
  .faq-item{
    position:relative;margin-bottom:12px;border-radius:var(--r-card);
    border:1px solid var(--hairline);background:rgba(18,37,57,.5);
    overflow:hidden;transition:border-color .25s,background .25s;
  }
  .faq-item::before{
    content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;
    background:var(--glow);border-radius:2px;opacity:0;transition:opacity .25s;
  }
  .faq-item.open{border-color:rgba(56,224,196,.35);background:rgba(18,37,57,.68);}
  .faq-item.open::before{opacity:1;}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;text-align:left;font-size:16px;font-weight:700;color:var(--text-hi);
  }
  .faq-icon{flex:none;color:var(--glow);transition:transform .3s;}
  .faq-item.open .faq-icon{transform:rotate(180deg);}
  .faq-a{max-height:0;overflow:hidden;padding:0 22px;font-size:15px;line-height:1.8;color:var(--text-mid);transition:max-height .35s ease,padding .3s ease;}
  .faq-item.open .faq-a{padding-bottom:20px;}

  /* 收尾 CTA */
  .cta-panel{
    position:relative;overflow:hidden;
    border-radius:var(--r-panel);
    border:1px solid rgba(56,224,196,.24);
    background:linear-gradient(120deg,rgba(20,58,92,.85) 0%,rgba(11,26,41,.95) 60%,rgba(7,18,30,.98) 100%);
    box-shadow:var(--shadow);
    padding:44px;
  }
  .cta-panel .cta-bg{
    position:absolute;inset:0;z-index:0;opacity:.28;
    background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  }
  .cta-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;}
  .cta-copy{max-width:620px;}
  .cta-copy h2{font-size:clamp(24px,3vw,30px);font-weight:700;line-height:1.35;}
  .cta-points{display:flex;flex-wrap:wrap;gap:16px;margin-top:18px;}
  .cta-points li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-mid);}
  .cta-points li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--glow);box-shadow:0 0 10px rgba(56,224,196,.6);}
  .cta-promise{margin-top:18px;font-size:13px;color:var(--text-low);}
  .cta-actions{display:flex;flex-direction:column;gap:14px;min-width:220px;}

  /* 页脚 */
  .site-footer{margin-top:96px;border-top:1px solid var(--hairline);background:var(--ink-800);}
  .footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding:60px 32px 44px;}
  .footer-brand p{margin-top:16px;font-size:14px;color:var(--text-mid);max-width:320px;}
  .footer-contact{margin-top:14px;font-size:13px;color:var(--text-low);line-height:2;font-variant-numeric:tabular-nums;}
  .footer-col h4{font-size:14px;font-weight:700;color:var(--text-hi);margin-bottom:16px;}
  .footer-col a{display:block;font-size:14px;color:var(--text-mid);padding:5px 0;transition:color .2s;}
  .footer-col a:hover{color:var(--glow);}
  .footer-bottom{
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
    padding:20px 32px 28px;border-top:1px solid var(--hairline);
    font-size:13px;color:var(--text-low);
  }
  .footer-bottom a{color:var(--text-low);}
  .footer-bottom a:hover{color:var(--glow);}

  /* 响应式 */
  @media (min-width:640px){
    .post-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  }
  @media (min-width:768px){
    .tier-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;}
  }
  @media (min-width:1024px){
    .tier-grid{grid-template-columns:repeat(12,minmax(0,1fr));}
    .tier-card.span-35{grid-column:span 3.5;}
    .tier-card.span-side{grid-column:span 4;}
    .tier-card.is-main{grid-column:span 5;order:0;}
    .tier-card.side-left{grid-column:span 3;grid-row:1;}
    .tier-card.side-right{grid-column:span 4;}
    .post-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
    .exclusive-grid{grid-template-columns:repeat(12,minmax(0,1fr));}
    .ex-left{grid-column:span 7;}
    .ex-right{grid-column:span 5;}
  }
  @media (max-width:1023px){
    .tier-card.is-main{clip-path:none;}
  }
  @media (max-width:768px){
    .container{padding:0 20px;}
    .section{padding:56px 0;}
    .section-sm{padding:52px 0;}
    .hero{padding-top:32px;}
    .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr));clip-path:none;border-radius:18px;}
    .stat-item:nth-child(2){border-right:0;}
    .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--hairline);}
    .cta-panel{padding:28px;}
    .cta-actions{width:100%;}
    .header-actions .link-sub{display:none;}
    .footer-grid{padding:44px 20px 32px;}
    .footer-bottom{padding:18px 20px 24px;}
  }

/* roulang page: category1 */
:root{
    --ink-900:#07121E;
    --ink-800:#0B1A29;
    --panel:#122539;
    --primary:#143A5C;
    --glow:#38E0C4;
    --violet:#8E7BFF;
    --text-hi:#E7EFF8;
    --text-mid:#9FB3C8;
    --text-low:#6B8098;
    --hair:rgba(255,255,255,.08);
    --inner-hi:inset 0 1px 0 rgba(255,255,255,.06);
    --radius-card:14px;
    --radius-panel:20px;
    --radius-btn:10px;
    --shadow-deep:0 24px 60px rgba(0,0,0,.45);
    --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--ink-900);
    color:var(--text-hi);
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:2px solid var(--glow);outline-offset:2px;border-radius:6px;}
  .num{font-variant-numeric:tabular-nums;font-family:ui-sans-serif,system-ui,sans-serif;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:70;
    background:transparent;
    border-bottom:1px solid transparent;
    transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
  }
  .site-header.is-scrolled{
    background:rgba(7,18,30,.85);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--hair);
  }
  .header-top{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding-top:16px;padding-bottom:10px;
  }
  .brand{display:flex;align-items:center;gap:12px;}
  .brand-mark{
    width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
    font-weight:700;font-size:19px;color:#06141F;
    background:linear-gradient(180deg,#38E0C4,#22B9A4);
    box-shadow:0 0 24px rgba(56,224,196,.28);
  }
  .brand-text strong{display:block;font-size:17px;font-weight:700;letter-spacing:.01em;line-height:1.2;}
  .brand-text em{display:block;font-style:normal;font-size:11.5px;color:var(--text-low);letter-spacing:.26em;line-height:1.6;}
  .header-actions{display:flex;align-items:center;gap:16px;}
  .link-sub{font-size:14px;color:var(--text-mid);transition:color .2s ease;}
  .link-sub:hover{color:var(--glow);}
  .header-nav{padding-bottom:14px;}
  .chip-nav{display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;padding:2px;}
  .chip-nav::-webkit-scrollbar{display:none;}

  .chip{
    flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 14px;
    border-radius:999px;font-size:14px;font-weight:500;
    color:var(--text-mid);
    background:rgba(18,37,57,.55);
    border:1px solid var(--hair);
    backdrop-filter:blur(12px);
    transition:color .2s ease,border-color .2s ease,background .2s ease;
  }
  .chip:hover{color:var(--text-hi);border-color:rgba(56,224,196,.35);}
  .chip.is-active{background:var(--glow);color:#06141F;font-weight:600;border-color:transparent;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--radius-btn);
    font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:transform .18s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  }
  .btn:active{transform:scale(.98);}
  .btn-primary{background:linear-gradient(180deg,#38E0C4,#22B9A4);color:#06141F;}
  .btn-primary:hover{box-shadow:0 0 0 1px rgba(56,224,196,.6),0 0 28px rgba(56,224,196,.35);}
  .btn-ghost{background:transparent;border-color:rgba(56,224,196,.42);color:#CFF7F1;}
  .btn-ghost:hover{background:rgba(56,224,196,.10);border-color:rgba(56,224,196,.72);}
  .btn-sm{height:38px;padding:0 16px;font-size:14px;}
  .btn-lg{height:48px;padding:0 24px;font-size:16px;}
  .btn[disabled]{opacity:.4;box-shadow:none;cursor:not-allowed;}
  .link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--glow);}
  .link-more:hover{text-decoration:underline;text-underline-offset:4px;}

  /* ---------- 分类页头部 ---------- */
  .cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--hair);}
  .cat-hero::before{
    content:"";position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
    opacity:.30;
  }
  .cat-hero::after{
    content:"";position:absolute;inset:0;
    background:
      linear-gradient(100deg,rgba(7,18,30,.97) 0%,rgba(7,18,30,.86) 44%,rgba(7,18,30,.58) 100%),
      linear-gradient(0deg,rgba(7,18,30,.9),rgba(7,18,30,0) 60%);
  }
  .hero-inner{position:relative;z-index:2;padding:64px 0 0;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;
    border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.04em;
    color:var(--glow);background:rgba(56,224,196,.10);border:1px solid rgba(56,224,196,.32);
  }
  .cat-hero h1{
    margin-top:20px;
    font-size:clamp(30px,4.4vw,46px);
    line-height:1.2;font-weight:700;letter-spacing:-.01em;
    max-width:22em;
  }
  .hero-lead{margin-top:16px;font-size:17px;color:var(--text-mid);max-width:40em;}
  .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
  .hero-chips{display:flex;gap:10px;margin-top:30px;overflow-x:auto;scrollbar-width:none;padding:2px 2px 4px;}
  .hero-chips::-webkit-scrollbar{display:none;}

  /* ---------- 数据条 ---------- */
  .stat-bar{
    display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
    background:var(--hair);
    border:1px solid var(--hair);
    border-radius:var(--radius-panel);
    overflow:hidden;
    margin:36px 0 0;
    backdrop-filter:blur(12px);
    box-shadow:var(--shadow-deep);
  }
  .stat-cell{background:rgba(11,26,41,.78);padding:20px 22px;}
  .stat-cell .num{display:block;font-size:clamp(26px,3vw,34px);font-weight:700;color:#fff;line-height:1.2;}
  .stat-cell .num i{font-style:normal;color:var(--glow);}
  .stat-cell p{margin-top:6px;font-size:13px;color:var(--text-low);}
  .hero-tail{height:56px;}

  /* ---------- 板块通用 ---------- */
  .section{padding:72px 0;}
  .section-alt{background:var(--ink-800);border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
  .section-head h2{font-size:clamp(23px,2.6vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.01em;}
  .section-head h2::before{
    content:"";display:inline-block;width:3px;height:20px;border-radius:2px;
    background:var(--glow);box-shadow:0 0 12px rgba(56,224,196,.7);
    margin-right:12px;vertical-align:-3px;
  }
  .section-head p{margin-top:10px;font-size:15px;color:var(--text-mid);max-width:56em;}

  /* ---------- 玻璃卡 ---------- */
  .glass-card{
    position:relative;
    border-radius:var(--radius-card);
    border:1px solid var(--hair);
    background:rgba(18,37,57,.55);
    backdrop-filter:blur(12px);
    box-shadow:var(--shadow-deep),var(--inner-hi);
    padding:24px;
    transition:transform .2s ease,border-color .2s ease;
  }
  .glass-card::before{
    content:"";position:absolute;top:0;left:16px;right:16px;height:1px;
    background:linear-gradient(90deg,transparent,rgba(56,224,196,.5),transparent);
  }
  .glass-card:hover{transform:translateY(-2px);border-color:rgba(56,224,196,.30);}
  .glass-card h3{font-size:19px;font-weight:700;line-height:1.45;}
  .glass-card p{font-size:15px;color:var(--text-mid);}
  .card-index{
    font-size:12.5px;font-weight:700;color:var(--glow);letter-spacing:.14em;
    font-variant-numeric:tabular-nums;
  }
  .glow-divider{
    height:1px;margin:16px 0;
    background:linear-gradient(90deg,rgba(56,224,196,.62),rgba(56,224,196,0));
  }
  .grid-2x2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}

  /* ---------- 等级卡 ---------- */
  .tier-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
  .tier-card{
    position:relative;display:flex;flex-direction:column;
    border-radius:var(--radius-card);
    border:1px solid var(--hair);
    background:rgba(18,37,57,.5);
    backdrop-filter:blur(12px);
    box-shadow:var(--shadow-deep),var(--inner-hi);
    padding:26px 24px;
    transition:transform .2s ease,border-color .2s ease;
  }
  .tier-card:hover{transform:translateY(-2px);border-color:rgba(56,224,196,.3);}
  .tier-card.is-featured{
    border-color:rgba(56,224,196,.5);
    background:linear-gradient(180deg,rgba(20,58,92,.72),rgba(18,37,57,.62));
    box-shadow:0 0 0 1px rgba(56,224,196,.3),var(--shadow-deep),var(--inner-hi);
  }
  .tier-card h3{margin-top:14px;font-size:20px;}
  .tier-desc{margin-top:8px;font-size:14.5px;color:var(--text-mid);min-height:48px;}
  .tier-price{margin:18px 0 4px;font-size:34px;font-weight:700;line-height:1.2;}
  .tier-price i{font-style:normal;font-size:15px;font-weight:500;color:var(--text-low);margin-left:6px;}
  .dot-list{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
  .dot-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text-mid);line-height:1.7;}
  .dot-list li::before{
    content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;
    background:var(--glow);box-shadow:0 0 10px rgba(56,224,196,.75);
  }
  .tier-foot{margin-top:auto;padding-top:22px;}
  .tier-foot .btn{width:100%;}
  .badge{
    display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
    font-size:12px;font-weight:600;line-height:1;
  }
  .badge-glow{background:rgba(56,224,196,.16);color:var(--glow);border:1px solid rgba(56,224,196,.4);}
  .badge-violet{background:rgba(142,123,255,.16);color:#B4A8FF;border:1px solid rgba(142,123,255,.35);}
  .badge-plain{background:rgba(255,255,255,.06);color:var(--text-mid);border:1px solid var(--hair);}

  /* ---------- 场景图文 ---------- */
  .scene{
    display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
    padding:28px 0;
  }
  .scene + .scene{border-top:1px solid var(--hair);}
  .scene-media{order:1;}
  .scene-body{order:2;}
  .scene.is-reverse .scene-media{order:2;}
  .scene.is-reverse .scene-body{order:1;}
  .media-frame{
    position:relative;border-radius:var(--radius-panel);overflow:hidden;
    border:1px solid var(--hair);aspect-ratio:4/3;background:#102539;
    box-shadow:var(--shadow-deep);
  }
  .media-frame img{width:100%;height:100%;object-fit:cover;}
  .media-frame::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(7,18,30,0) 45%,rgba(7,18,30,.55) 100%);
  }
  .scene-body h3{font-size:21px;font-weight:700;line-height:1.4;}
  .scene-body p{margin-top:14px;font-size:15.5px;color:var(--text-mid);}
  .scene-body .link-more{margin-top:18px;}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
  .tag{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
    font-size:12.5px;color:var(--text-mid);background:rgba(18,37,57,.6);border:1px solid var(--hair);
  }

  /* ---------- 步骤 ---------- */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:8px;}
  .step{position:relative;padding:0 24px 0 22px;border-left:1px solid var(--hair);}
  .step::before{
    content:"";position:absolute;left:-5px;top:7px;width:9px;height:9px;border-radius:50%;
    background:var(--glow);box-shadow:0 0 12px rgba(56,224,196,.85);
  }
  .step-num{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--glow);font-variant-numeric:tabular-nums;}
  .step h3{margin-top:12px;font-size:17.5px;}
  .step p{margin-top:8px;font-size:14.5px;color:var(--text-mid);}
  .step:first-child{border-left:1px solid var(--hair);}

  /* ---------- FAQ ---------- */
  .faq-list{margin-top:8px;}
  .faq-item{
    border:1px solid var(--hair);border-radius:var(--radius-card);
    background:rgba(18,37,57,.45);
    margin-bottom:12px;overflow:hidden;
    transition:border-color .2s ease,background .2s ease;
  }
  .faq-item:hover{border-color:rgba(56,224,196,.25);}
  .faq-item.open{border-color:rgba(56,224,196,.4);background:rgba(18,37,57,.62);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;background:none;border:0;text-align:left;cursor:pointer;
    font-size:16px;font-weight:600;color:var(--text-hi);line-height:1.6;
  }
  .faq-q .caret{
    flex:0 0 auto;width:22px;height:22px;display:grid;place-items:center;
    color:var(--glow);transition:transform .28s ease;
  }
  .faq-item.open .caret{transform:rotate(180deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
  .faq-a-inner{
    margin:0 22px 20px;padding:2px 0 2px 16px;
    border-left:2px solid rgba(56,224,196,.65);
    font-size:15px;line-height:1.8;color:var(--text-mid);
  }

  /* ---------- 收尾 CTA ---------- */
  .cta-panel{
    position:relative;overflow:hidden;
    display:grid;grid-template-columns:1.5fr .8fr;gap:32px;align-items:center;
    border-radius:var(--radius-panel);
    border:1px solid rgba(56,224,196,.28);
    background:linear-gradient(120deg,rgba(20,58,92,.92),rgba(11,26,41,.94));
    padding:40px;
    box-shadow:var(--shadow-deep),var(--inner-hi);
  }
  .cta-panel::after{
    content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
    background:radial-gradient(circle,rgba(56,224,196,.22),rgba(56,224,196,0) 70%);
  }
  .cta-panel h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.35;}
  .cta-panel p{margin-top:12px;font-size:15px;color:var(--text-mid);}
  .cta-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:18px;}
  .cta-points span{position:relative;padding-left:18px;font-size:14.5px;color:var(--text-hi);}
  .cta-points span::before{
    content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
    background:var(--glow);box-shadow:0 0 10px rgba(56,224,196,.75);
  }
  .cta-actions{position:relative;z-index:2;display:flex;flex-direction:column;gap:12px;}
  .cta-actions .btn{width:100%;}
  .cta-note{font-size:13px;color:var(--text-low);text-align:center;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--primary);border-top:1px solid var(--hair);margin-top:0;}
  .footer-grid{
    display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;
    padding:64px 0 32px;
  }
  .footer-brand p{margin-top:16px;font-size:14px;color:rgba(231,239,248,.72);max-width:32em;}
  .footer-contact{margin-top:14px;font-size:13.5px;color:rgba(231,239,248,.6);line-height:1.9;}
  .footer-col h4{font-size:15px;font-weight:700;margin-bottom:14px;}
  .footer-col a{display:block;font-size:14px;color:rgba(231,239,248,.7);padding:5px 0;transition:color .2s ease;}
  .footer-col a:hover{color:var(--glow);}
  .footer-bottom{
    display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
    border-top:1px solid rgba(255,255,255,.12);
    padding:20px 0 28px;font-size:13px;color:rgba(231,239,248,.6);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .container{padding:0 24px;}
    .grid-2x2{grid-template-columns:1fr;}
    .tier-grid{grid-template-columns:1fr;}
    .scene{grid-template-columns:1fr;gap:24px;}
    .scene-media,.scene-body{order:initial !important;}
    .steps{grid-template-columns:repeat(2,1fr);gap:28px 0;}
    .cta-panel{grid-template-columns:1fr;padding:32px;}
    .footer-grid{grid-template-columns:1fr 1fr;padding:48px 0 24px;}
    .section{padding:56px 0;}
  }
  @media (max-width:640px){
    .container{padding:0 20px;}
    body{font-size:15.5px;}
    .header-actions .link-sub{display:none;}
    .brand-mark{width:36px;height:36px;font-size:17px;}
    .brand-text strong{font-size:16px;}
    .hero-inner{padding:44px 0 0;}
    .hero-lead{font-size:15.5px;}
    .stat-bar{grid-template-columns:repeat(2,1fr);}
    .steps{grid-template-columns:1fr;gap:0;}
    .step{padding:18px 0 18px 22px;}
    .step + .step{border-top:1px solid var(--hair);}
    .footer-grid{grid-template-columns:1fr;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .cta-points{flex-direction:column;gap:8px;}
    .section{padding:56px 0;}
  }

/* roulang page: article */
:root{
    --ink-900:#07121E;
    --ink-800:#0B1A29;
    --panel:#122539;
    --deepfield:#0E1F31;
    --primary:#143A5C;
    --glow:#38E0C4;
    --glow-soft:rgba(56,224,196,.35);
    --violet:#8E7BFF;
    --text-hi:#E7EFF8;
    --text-mid:#9FB3C8;
    --text-low:#6B8098;
    --body-copy:#D7E3F0;
    --hair:rgba(255,255,255,.08);
    --inner-hi:inset 0 1px 0 rgba(255,255,255,.06);
    --shadow:0 24px 60px rgba(0,0,0,.45);
    --r-card:14px;
    --r-panel:20px;
    --r-btn:10px;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--ink-900);
    color:var(--text-hi);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;
  }
  img{max-width:100%;display:block}
  a{color:inherit}
  button,input,textarea,select{font-family:inherit}
  ::selection{background:rgba(56,224,196,.28)}
  .tnum{font-variant-numeric:tabular-nums}
  :focus-visible{outline:2px solid var(--glow);outline-offset:2px;border-radius:6px}

  /* 容器与栅格 */
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
  @media (max-width:640px){ .container{padding:0 20px} }

  /* 顶部导航 */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(7,18,30,.55);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    transition:background .25s ease, box-shadow .25s ease;
  }
  .site-header.is-scrolled{
    background:rgba(7,18,30,.88);
    box-shadow:0 1px 0 var(--hair);
  }
  .header-top{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding-top:16px;padding-bottom:12px;
  }
  .brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--text-hi)}
  .brand-mark{
    width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
    font-weight:700;font-size:18px;color:#06141F;
    background:linear-gradient(180deg,#38E0C4,#22B9A4);
    box-shadow:0 0 0 1px rgba(56,224,196,.35), 0 0 22px rgba(56,224,196,.22);
    flex:0 0 auto;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15}
  .brand-text strong{font-size:17px;font-weight:700;letter-spacing:.01em}
  .brand-text em{font-style:normal;font-size:11px;color:var(--text-low);letter-spacing:.16em}
  .header-actions{display:flex;align-items:center;gap:14px}
  .link-sub{font-size:13.5px;color:var(--text-mid);text-decoration:none;transition:color .2s ease}
  .link-sub:hover{color:var(--glow)}
  @media (max-width:640px){ .link-sub{display:none} }

  .header-nav{padding-bottom:14px}
  .chip-nav{
    display:flex;align-items:center;gap:10px;
    overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
    padding:2px 0 4px;
  }
  .chip-nav::-webkit-scrollbar{display:none}
  .chip{
    flex:0 0 auto;display:inline-flex;align-items:center;height:34px;padding:0 14px;
    border-radius:999px;font-size:13.5px;font-weight:500;letter-spacing:.01em;
    color:var(--text-mid);text-decoration:none;
    background:rgba(18,37,57,.55);
    border:1px solid var(--hair);
    box-shadow:var(--inner-hi);
    transition:color .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease;
  }
  .chip:hover{color:var(--text-hi);border-color:rgba(56,224,196,.38);background:rgba(18,37,57,.8)}
  .chip.is-active{
    color:#06141F;border-color:transparent;
    background:linear-gradient(180deg,#38E0C4,#22B9A4);
    box-shadow:0 0 20px rgba(56,224,196,.25);
  }
  .chip-mini{height:26px;padding:0 11px;font-size:12.5px}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;
    height:44px;padding:0 20px;border-radius:var(--r-btn);
    font-size:14.5px;font-weight:600;text-decoration:none;
    border:1px solid transparent;cursor:pointer;white-space:nowrap;
    transition:box-shadow .22s ease, background .22s ease, border-color .22s ease, transform .15s ease, color .2s ease;
  }
  .btn-primary{
    background:linear-gradient(180deg,#38E0C4,#22B9A4);
    color:#06141F;
    box-shadow:0 0 0 1px rgba(56,224,196,.25);
  }
  .btn-primary:hover{
    box-shadow:0 0 0 1px rgba(56,224,196,.6), 0 0 28px rgba(56,224,196,.35);
  }
  .btn-ghost{
    background:transparent;color:var(--glow);
    border-color:rgba(56,224,196,.45);
  }
  .btn-ghost:hover{background:rgba(56,224,196,.10);box-shadow:0 0 22px rgba(56,224,196,.18)}
  .btn-sm{height:38px;padding:0 16px;font-size:13.5px}
  .btn-lg{height:48px;padding:0 24px;font-size:15px}
  .btn:active{transform:scale(.98)}
  .btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;pointer-events:none}

  /* 面包屑 */
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    font-size:13px;color:var(--text-low);
    padding:26px 0 0;
  }
  .breadcrumb a{color:var(--text-mid);text-decoration:none;transition:color .2s ease}
  .breadcrumb a:hover{color:var(--glow)}
  .breadcrumb .sep{color:rgba(107,128,152,.7)}

  /* 文章布局 */
  .article-grid{
    display:grid;grid-template-columns:minmax(0,1fr);
    gap:48px;padding:28px 0 0;
  }
  .article-main{width:100%;max-width:820px;margin:0 auto}
  @media (min-width:1280px){
    .article-grid{grid-template-columns:minmax(0,1fr) 300px;align-items:start}
    .article-main{margin:0;max-width:820px}
  }
  .article-side{display:none}
  @media (min-width:1280px){
    .article-side{display:block;position:sticky;top:104px}
  }
  .side-card{
    background:rgba(18,37,57,.55);
    backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    border:1px solid var(--hair);border-radius:var(--r-card);
    box-shadow:var(--inner-hi), var(--shadow);
    padding:20px;margin-bottom:20px;
  }
  .side-card h3{font-size:14px;margin:0 0 12px;color:var(--text-hi);letter-spacing:.02em}
  .toc-list{list-style:none;margin:0;padding:0;font-size:13.5px;max-height:46vh;overflow:auto}
  .toc-list a{
    display:block;padding:6px 0 6px 12px;color:var(--text-mid);text-decoration:none;
    border-left:1px solid var(--hair);transition:color .2s ease,border-color .2s ease;
  }
  .toc-list a:hover{color:var(--glow);border-color:var(--glow)}
  .toc-list a.is-sub{padding-left:24px;font-size:13px;color:var(--text-low)}
  .side-cta p{font-size:13.5px;color:var(--text-mid);margin:0 0 16px;line-height:1.7}
  .side-cta .btn{width:100%}

  /* 文章头部 */
  .article-head{padding-top:30px}
  .article-cat{display:inline-flex;align-items:center;gap:8px;margin-bottom:16px}
  .article-title{
    font-size:clamp(30px,4.4vw,44px);line-height:1.2;font-weight:700;
    letter-spacing:-.01em;margin:0 0 18px;color:var(--text-hi);
  }
  .article-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
    font-size:13.5px;color:var(--text-low);
  }
  .article-meta span{display:inline-flex;align-items:center;gap:6px}
  .article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--text-low);opacity:.7}

  .article-cover{margin:32px 0 0}
  .article-cover .frame{
    aspect-ratio:16/9;border-radius:var(--r-panel);overflow:hidden;
    border:1px solid var(--hair);background:#102539;
  }
  .article-cover img{width:100%;height:100%;object-fit:cover}
  .article-cover figcaption{font-size:13px;color:var(--text-low);margin-top:10px}

  /* 正文排版 */
  .article-body{
    margin-top:36px;font-size:16.5px;line-height:1.9;color:var(--body-copy);
    word-break:break-word;
  }
  .article-body > p:first-of-type{font-size:18px;color:#E2ECF6}
  .article-body h2{
    position:relative;font-size:26px;line-height:1.35;font-weight:700;
    color:var(--text-hi);margin:48px 0 16px;padding-left:16px;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.32em;width:3px;height:1.05em;
    border-radius:2px;background:var(--glow);box-shadow:0 0 14px rgba(56,224,196,.5);
  }
  .article-body h3{font-size:19px;line-height:1.45;font-weight:600;color:var(--text-hi);margin:32px 0 12px}
  .article-body p{margin:0 0 1.2em}
  .article-body a{color:var(--glow);text-decoration:underline;text-underline-offset:3px;transition:color .2s ease}
  .article-body a:hover{color:#7CF3DF}
  .article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.4em}
  .article-body li{margin:.45em 0}
  .article-body ul li::marker{color:var(--glow)}
  .article-body ol li::marker{color:var(--glow);font-variant-numeric:tabular-nums}
  .article-body blockquote{
    margin:28px 0;padding:18px 22px;color:var(--text-mid);
    background:rgba(18,37,57,.6);
    border-left:3px solid var(--glow);
    border-radius:0 var(--r-card) var(--r-card) 0;
  }
  .article-body blockquote p:last-child{margin-bottom:0}
  .article-body img{border-radius:var(--r-card);border:1px solid var(--hair);margin:24px auto}
  .article-body figure{margin:28px 0}
  .article-body figcaption{font-size:13px;color:var(--text-low);text-align:center;margin-top:8px}
  .article-body table{
    width:100%;margin:24px 0;font-size:14.5px;
    border-collapse:separate;border-spacing:0;
    background:rgba(18,37,57,.5);
    border:1px solid var(--hair);border-radius:var(--r-card);overflow:hidden;
  }
  .article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--hair)}
  .article-body th{background:rgba(20,58,92,.55);color:var(--text-hi);font-weight:600;font-size:13.5px}
  .article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
  .article-body tbody tr:last-child td{border-bottom:none}
  .article-body hr{border:none;border-top:1px solid var(--hair);margin:36px 0}
  .article-body code{
    background:var(--deepfield);border:1px solid var(--hair);
    padding:2px 6px;border-radius:6px;font-size:.9em;color:#BFE9E0;
  }
  @media (max-width:900px){
    .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  }

  /* 会员门控位 */
  .gate{
    position:relative;margin:36px 0 0;padding:26px 24px 32px;
    border:1px solid var(--hair);border-radius:var(--r-card);
    background:rgba(18,37,57,.45);overflow:hidden;
  }
  .gate h3{margin:0 0 10px;font-size:18px;color:var(--text-hi)}
  .gate p{margin:0;font-size:14.5px;color:var(--text-mid)}
  .gate::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:180px;
    background:linear-gradient(180deg,rgba(7,18,30,0),rgba(7,18,30,.95));
    pointer-events:none;
  }
  .gate-actions{position:relative;z-index:2;margin-top:120px}

  /* 标签与分享 */
  .tag-list{display:flex;flex-wrap:wrap;gap:10px;margin:42px 0 0}
  .tag{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;
    border-radius:999px;font-size:12.5px;text-decoration:none;
    color:var(--text-mid);background:rgba(18,37,57,.6);border:1px solid var(--hair);
    transition:color .2s ease,border-color .2s ease,background .2s ease;
  }
  .tag:hover{color:var(--glow);border-color:rgba(56,224,196,.42);background:rgba(18,37,57,.85)}
  .share-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:22px 0 0}
  .share-row .label{font-size:13px;color:var(--text-low)}
  .share-row button{
    height:36px;padding:0 14px;border-radius:var(--r-btn);
    background:transparent;border:1px solid var(--hair);color:var(--text-mid);
    font-size:13px;cursor:pointer;transition:color .2s ease,border-color .2s ease,background .2s ease;
  }
  .share-row button:hover{color:var(--glow);border-color:rgba(56,224,196,.42);background:rgba(56,224,196,.08)}

  /* 上下篇 */
  .pager{display:grid;grid-template-columns:1fr;gap:16px;margin:44px 0 0}
  @media (min-width:768px){ .pager{grid-template-columns:1fr 1fr} }
  .pager a{
    display:block;padding:18px 20px;text-decoration:none;color:var(--text-hi);
    background:rgba(18,37,57,.45);border:1px solid var(--hair);border-radius:var(--r-card);
    box-shadow:var(--inner-hi);
    transition:transform .22s ease,border-color .22s ease,background .22s ease,box-shadow .22s ease;
  }
  .pager a:hover{transform:translateY(-2px);border-color:rgba(56,224,196,.42);background:rgba(18,37,57,.75);box-shadow:var(--shadow)}
  .pager .dir{display:block;font-size:12.5px;color:var(--text-low);margin-bottom:6px;letter-spacing:.04em}
  .pager .ttl{display:block;font-size:15.5px;font-weight:600;line-height:1.5}
  .pager .right{text-align:right}

  /* 相关推荐 */
  .related{margin:64px 0 0}
  .related-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:22px}
  .section-title{font-size:26px;font-weight:700;letter-spacing:-.01em;margin:0;color:var(--text-hi)}
  @media (max-width:640px){ .section-title{font-size:22px} }
  .text-link{font-size:14px;color:var(--glow);text-decoration:none;transition:color .2s ease}
  .text-link:hover{color:#7CF3DF;text-decoration:underline;text-underline-offset:3px}

  .card-grid{display:grid;grid-template-columns:1fr;gap:24px}
  @media (min-width:640px){ .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))} }
  @media (min-width:1024px){ .card-grid{grid-template-columns:repeat(3,minmax(0,1fr))} }
  .card{
    position:relative;display:flex;flex-direction:column;overflow:hidden;
    border-radius:var(--r-card);border:1px solid var(--hair);
    background:rgba(18,37,57,.55);
    backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    text-decoration:none;color:var(--text-hi);
    box-shadow:var(--inner-hi);
    transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  }
  .card::before{
    content:"";position:absolute;top:0;left:12%;right:12%;height:1px;
    background:linear-gradient(90deg,transparent,rgba(56,224,196,.75),transparent);
    opacity:0;transition:opacity .22s ease;z-index:3;
  }
  .card:hover{transform:translateY(-2px);border-color:rgba(56,224,196,.38);box-shadow:var(--shadow)}
  .card:hover::before{opacity:1}
  .thumb{
    position:relative;aspect-ratio:16/9;overflow:hidden;background:#102539;
    background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.03) 0 8px,transparent 8px 16px);
  }
  .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
  .card:hover .thumb img{transform:scale(1.03)}
  .card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
  .card h3{font-size:17px;line-height:1.5;margin:0;font-weight:600;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .card p{margin:0;font-size:14px;line-height:1.7;color:var(--text-mid);
    display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .card-foot{margin-top:auto;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-low)}
  .badge{
    display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
    font-size:12px;font-weight:500;letter-spacing:.01em;
  }
  .badge-glow{color:var(--glow);background:rgba(56,224,196,.12);border:1px solid rgba(56,224,196,.35)}
  .badge-violet{color:#CFC6FF;background:rgba(142,123,255,.14);border:1px solid rgba(142,123,255,.4)}
  .badge-plain{color:var(--text-mid);background:rgba(18,37,57,.9);border:1px solid var(--hair)}
  .thumb .badge{position:absolute;left:14px;top:14px;z-index:2;background:rgba(7,18,30,.72);backdrop-filter:blur(6px)}

  /* CTA 面板 */
  .cta-panel{
    margin:72px 0 0;padding:40px;border-radius:var(--r-panel);
    border:1px solid rgba(56,224,196,.22);
    background:
      radial-gradient(120% 140% at 100% 0%, rgba(56,224,196,.14), transparent 55%),
      linear-gradient(140deg,rgba(20,58,92,.9),rgba(11,26,41,.92));
    box-shadow:var(--shadow);
    display:grid;gap:28px;align-items:center;
  }
  @media (min-width:1024px){ .cta-panel{grid-template-columns:1.45fr 1fr} }
  @media (max-width:640px){ .cta-panel{padding:26px 22px} }
  .cta-panel h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;margin:0 0 16px;color:var(--text-hi)}
  .cta-points{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:10px}
  .cta-points li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text-mid)}
  .cta-points li::before{
    content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;border-radius:50%;
    background:var(--glow);box-shadow:0 0 10px rgba(56,224,196,.55);
  }
  .cta-note{font-size:13px;color:var(--text-low);margin:0;border-top:1px solid var(--hair);padding-top:14px}
  .cta-actions{display:flex;flex-direction:column;gap:12px}
  @media (min-width:640px) and (max-width:1023px){ .cta-actions{flex-direction:row;flex-wrap:wrap} }
  .cta-actions .btn{width:100%}
  @media (min-width:640px) and (max-width:1023px){ .cta-actions .btn{width:auto} }
  @media (min-width:1024px){ .cta-actions .btn{width:100%} }

  /* 空态 */
  .empty-state{
    text-align:center;padding:72px 24px;margin:40px 0 0;
    border:1px solid var(--hair);border-radius:var(--r-panel);
    background:rgba(18,37,57,.4);
  }
  .empty-state svg{margin:0 auto 18px}
  .empty-state h1{font-size:clamp(24px,3vw,32px);margin:0 0 10px}
  .empty-state p{margin:0 0 22px;color:var(--text-mid);font-size:14.5px}

  /* 页脚 */
  .site-footer{background:var(--primary);margin-top:88px;border-top:1px solid rgba(255,255,255,.1)}
  .footer-grid{
    display:grid;grid-template-columns:1fr;gap:36px;
    padding:64px 0 40px;
  }
  @media (min-width:768px){ .footer-grid{grid-template-columns:1.6fr 1fr 1fr} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px} }
  .footer-brand .brand{margin-bottom:16px}
  .footer-brand p{font-size:13.5px;line-height:1.85;color:rgba(231,239,248,.72);margin:0 0 14px;max-width:360px}
  .footer-contact{font-size:13px;color:rgba(231,239,248,.6);line-height:1.9}
  .footer-col h4{font-size:14px;margin:0 0 16px;color:var(--text-hi);letter-spacing:.02em}
  .footer-col a{display:block;font-size:13.5px;color:rgba(231,239,248,.68);text-decoration:none;padding:5px 0;transition:color .2s ease}
  .footer-col a:hover{color:var(--glow)}
  .footer-bottom{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
    padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
    font-size:13px;color:rgba(231,239,248,.6);
  }
  .site-footer .brand-text em{color:rgba(231,239,248,.55)}

/* roulang page: category2 */
:root{
  --ink-900:#07121E;
  --ink-800:#0B1A29;
  --panel:#122539;
  --panel-glass:rgba(18,37,57,.55);
  --primary:#143A5C;
  --glow:#38E0C4;
  --violet:#8E7BFF;
  --text-hi:#E7EFF8;
  --text-mid:#9FB3C8;
  --text-low:#6B8098;
  --hair:rgba(255,255,255,.08);
  --hair-strong:rgba(255,255,255,.16);
  --radius-card:14px;
  --radius-panel:20px;
  --radius-btn:10px;
  --shadow-card:0 24px 60px rgba(0,0,0,.45);
  --inset-hi:inset 0 1px 0 rgba(255,255,255,.06);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--text-hi);
  background:
    radial-gradient(900px 520px at 82% -6%, rgba(56,224,196,.09), transparent 60%),
    radial-gradient(720px 460px at 6% 12%, rgba(142,123,255,.07), transparent 62%),
    var(--ink-900);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--glow);outline-offset:2px;border-radius:6px}
::selection{background:rgba(56,224,196,.3)}
.num{font-variant-numeric:tabular-nums;font-family:ui-sans-serif,system-ui,sans-serif}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (max-width:640px){.container{padding:0 20px}}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(7,18,30,.85);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--hair);
}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:16px 32px}
@media (max-width:640px){.header-top{padding:14px 20px}}
.brand{display:inline-flex;align-items:center;gap:12px}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(160deg,#1B4C74,var(--ink-800));
  border:1px solid var(--hair-strong);
  box-shadow:var(--inset-hi);
  color:var(--glow);font-weight:700;font-size:18px;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.2em;color:var(--text-low)}
.header-actions{display:flex;align-items:center;gap:16px}
.link-sub{font-size:14px;color:var(--text-mid);transition:color .2s ease}
.link-sub:hover{color:var(--glow)}
@media (max-width:640px){.header-actions .link-sub{display:none}}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .2s ease,box-shadow .25s ease,background .25s ease,color .2s ease,border-color .2s ease;
  cursor:pointer;white-space:nowrap;
}
.btn:active{transform:scale(.98)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:48px;padding:0 26px;font-size:16px}
.btn-primary{
  background:linear-gradient(180deg,#38E0C4,#22B9A4);
  color:#06141F;
  box-shadow:0 10px 26px rgba(56,224,196,.16);
}
.btn-primary:hover{
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(56,224,196,.6),0 0 28px rgba(56,224,196,.35);
}
.btn-ghost{
  background:transparent;border-color:rgba(56,224,196,.5);color:var(--glow);
}
.btn-ghost:hover{background:rgba(56,224,196,.10);box-shadow:0 0 22px rgba(56,224,196,.2)}
.btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;pointer-events:none}

.header-nav{padding:0 32px 14px}
@media (max-width:640px){.header-nav{padding:0 20px 12px}}
.chip-nav{display:flex;gap:10px;overflow-x:auto;padding-bottom:2px;scrollbar-width:none}
.chip-nav::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:999px;
  font-size:14px;font-weight:500;color:var(--text-mid);
  background:var(--panel-glass);border:1px solid var(--hair);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:color .2s ease,border-color .2s ease,transform .2s ease,background .2s ease,box-shadow .2s ease;
  white-space:nowrap;
}
.chip:hover{color:var(--text-hi);border-color:rgba(56,224,196,.35);transform:translateY(-1px)}
.chip.is-active{
  background:linear-gradient(180deg,#38E0C4,#22B9A4);
  color:#06141F;border-color:transparent;
  box-shadow:0 0 20px rgba(56,224,196,.25);
}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;padding:72px 0 60px}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.5;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,18,30,.97) 0%,rgba(7,18,30,.86) 44%,rgba(11,26,41,.6) 100%);
}
.hero-grid{
  position:absolute;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:64px 64px;
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.85),transparent 88%);
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.85),transparent 88%);
}
.hero-inner{position:relative;z-index:2;max-width:820px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:.08em;color:var(--glow);
  background:rgba(56,224,196,.08);border:1px solid rgba(56,224,196,.28);
}
.hero-title{
  font-size:clamp(30px,4.4vw,46px);line-height:1.2;font-weight:700;
  letter-spacing:-.01em;margin:20px 0 14px;
}
.hero-sub{font-size:17px;line-height:1.75;color:var(--text-mid);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-chips{margin-top:30px;display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;padding-bottom:2px}
.hero-chips::-webkit-scrollbar{display:none}

/* 数据条（切角） */
.data-strip{
  position:relative;z-index:2;margin-top:46px;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--panel-glass);border:1px solid var(--hair);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-radius:var(--radius-card);
  clip-path:polygon(0 0,calc(100% - 22px) 0,100% 22px,100% 100%,0 100%);
  box-shadow:var(--shadow-card),var(--inset-hi);
}
.data-cell{padding:22px 24px;border-right:1px solid var(--hair)}
.data-cell:last-child{border-right:0}
.data-num{font-size:clamp(26px,3.2vw,34px);font-weight:700;line-height:1.1;color:var(--text-hi)}
.data-num .unit{font-size:14px;font-weight:500;color:var(--glow);margin-left:4px}
.data-label{margin-top:6px;font-size:13px;color:var(--text-low)}

/* ===== 板块 ===== */
.section{padding:72px 0}
.section-tight{padding-top:0}
.section-alt{background:linear-gradient(180deg,rgba(11,26,41,.72),rgba(7,18,30,0) 78%)}
.section-head{max-width:740px;margin-bottom:42px}
.kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.12em;color:var(--glow)}
.kicker::before{content:"";width:22px;height:1px;background:var(--glow)}
.section-title{font-size:clamp(24px,3vw,30px);line-height:1.32;font-weight:700;margin:12px 0 12px}
.section-desc{color:var(--text-mid);font-size:16px}

/* 步骤条 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{
  position:relative;padding:24px 22px;border-radius:var(--radius-card);
  background:var(--panel-glass);border:1px solid var(--hair);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:var(--inset-hi);
  transition:transform .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-2px);border-color:rgba(56,224,196,.35)}
.step-num{font-size:13px;letter-spacing:.14em;color:var(--glow)}
.step h3{font-size:18px;font-weight:700;margin:10px 0 8px}
.step p{font-size:14px;line-height:1.75;color:var(--text-mid)}

/* 交错图文 */
.zigzag{display:flex;flex-direction:column;gap:60px}
.zig-row{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.zig-row.is-reverse .zig-media{order:2}
.zig-media{
  position:relative;border-radius:var(--radius-panel);overflow:hidden;
  border:1px solid var(--hair);box-shadow:var(--shadow-card);
  aspect-ratio:4/3;background:#102539;
}
.zig-media img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.zig-row:hover .zig-media img{transform:scale(1.03)}
.media-tag{
  position:absolute;left:16px;top:16px;height:24px;display:inline-flex;align-items:center;
  padding:0 12px;border-radius:999px;font-size:12px;font-weight:500;
  background:rgba(7,18,30,.72);border:1px solid var(--hair-strong);color:var(--text-hi);
  backdrop-filter:blur(8px);
}
.zig-body .zig-index{font-size:13px;letter-spacing:.14em;color:var(--glow)}
.zig-body h3{font-size:22px;line-height:1.35;font-weight:700;margin:12px 0 14px}
.zig-body p{font-size:15.5px;line-height:1.85;color:var(--text-mid);margin-bottom:12px}
.text-link{
  display:inline-flex;align-items:center;gap:8px;margin-top:8px;
  font-size:15px;font-weight:600;color:var(--glow);
  border-bottom:1px solid rgba(56,224,196,.4);padding-bottom:2px;
  transition:color .2s ease,border-color .2s ease,gap .2s ease;
}
.text-link:hover{color:#8CF3E3;border-color:#8CF3E3;gap:12px}

/* 玻璃卡 */
.card{
  padding:24px;border-radius:var(--radius-card);
  background:var(--panel-glass);border:1px solid var(--hair);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:var(--inset-hi);
  transition:transform .22s ease,border-color .22s ease,box-shadow .25s ease;
  position:relative;overflow:hidden;
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(56,224,196,.55),transparent);
  opacity:0;transition:opacity .25s ease;
}
.card:hover{transform:translateY(-2px);border-color:rgba(56,224,196,.32);box-shadow:var(--shadow-card),var(--inset-hi)}
.card:hover::before{opacity:1}
.card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.card p{font-size:15px;line-height:1.8;color:var(--text-mid)}
.hair-line{height:1px;margin:18px 0;background:linear-gradient(90deg,rgba(56,224,196,.6),rgba(255,255,255,.04))}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}

/* 统计小条 */
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:24px}
.stat{padding:20px 22px;border-radius:var(--radius-card);background:rgba(18,37,57,.4);border:1px solid var(--hair)}
.stat b{display:block;font-size:28px;line-height:1.2;font-weight:700}
.stat span{font-size:13px;color:var(--text-low)}

/* FAQ */
.faq-list{max-width:880px}
.faq-item{
  position:relative;margin-bottom:14px;border-radius:var(--radius-card);
  background:rgba(18,37,57,.45);border:1px solid var(--hair);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  overflow:hidden;transition:border-color .24s ease,background .24s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--glow);
  transform:scaleY(0);transform-origin:top;transition:transform .3s ease;
}
.faq-item.is-open{border-color:rgba(56,224,196,.3);background:rgba(18,37,57,.6)}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:700;color:var(--text-hi);
}
.faq-ico{
  flex:0 0 auto;width:22px;height:22px;display:grid;place-items:center;
  color:var(--glow);transition:transform .3s ease;
}
.faq-item.is-open .faq-ico{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .36s ease}
.faq-item.is-open .faq-a{max-height:400px}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-mid)}

/* CTA 面板 */
.cta-panel{
  display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center;
  padding:44px;border-radius:var(--radius-panel);
  background:linear-gradient(120deg,rgba(20,58,92,.85),rgba(11,26,41,.9) 62%);
  border:1px solid var(--hair-strong);
  box-shadow:var(--shadow-card),var(--inset-hi);
}
.cta-panel h2{font-size:clamp(24px,3vw,30px);line-height:1.3;font-weight:700;margin-bottom:18px}
.cta-points{display:flex;flex-direction:column;gap:10px;margin-bottom:18px}
.cta-points li{position:relative;padding-left:20px;font-size:15px;color:var(--text-mid)}
.cta-points li::before{
  content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;
  background:var(--glow);box-shadow:0 0 12px rgba(56,224,196,.7);
}
.cta-note{font-size:13px;color:var(--text-low)}
.cta-action{display:flex;flex-direction:column;gap:14px;align-items:stretch}

/* 页脚 */
.site-footer{
  margin-top:40px;padding:64px 0 0;
  background:linear-gradient(180deg,rgba(20,58,92,.5),rgba(7,18,30,.98));
  border-top:1px solid var(--hair);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:44px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:var(--text-mid);max-width:340px}
.footer-contact{margin-top:14px;font-size:13px;color:var(--text-low)}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text-hi);margin-bottom:16px;font-weight:700}
.footer-col a{display:block;font-size:14px;color:var(--text-mid);padding:6px 0;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--glow);transform:translateX(2px)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 32px;border-top:1px solid var(--hair);
  font-size:13px;color:var(--text-low);
}
@media (max-width:640px){.footer-bottom{padding:16px 20px;flex-direction:column;align-items:flex-start}}

/* 响应式 */
@media (max-width:1023px){
  .data-strip{grid-template-columns:repeat(2,1fr)}
  .data-cell:nth-child(2){border-right:0}
  .data-cell:nth-child(1),.data-cell:nth-child(2){border-bottom:1px solid var(--hair)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .zig-row{grid-template-columns:1fr;gap:26px}
  .zig-row.is-reverse .zig-media{order:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-panel{grid-template-columns:1fr;padding:32px}
}
@media (max-width:767px){
  .section{padding:56px 0}
  .hero{padding:52px 0 44px}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .stat-row{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .brand-text em{letter-spacing:.14em}
}
@media (max-width:520px){
  .data-strip{grid-template-columns:1fr;clip-path:none}
  .data-cell{border-right:0;border-bottom:1px solid var(--hair);padding:18px 20px}
  .data-cell:last-child{border-bottom:0}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{flex:1 1 100%}
}

/* roulang page: category3 */
:root{
    --ink-900:#07121E;
    --ink-800:#0B1A29;
    --panel:#122539;
    --primary:#143A5C;
    --glow:#38E0C4;
    --glow-deep:#22B9A4;
    --violet:#8E7BFF;
    --text-hi:#E7EFF8;
    --text-mid:#9FB3C8;
    --text-low:#6B8098;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.14);
    --glass:rgba(18,37,57,.55);
    --inset-hi:inset 0 1px 0 rgba(255,255,255,.06);
    --shadow-lg:0 24px 60px rgba(0,0,0,.45);
    --r-card:14px;
    --r-panel:20px;
    --r-btn:10px;
    --r-chip:999px;
    --warn:#E0A15A;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--ink-900);
    color:var(--text-hi);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;border:0}
  a{color:inherit;text-decoration:none}
  button,input,select,textarea{font:inherit;color:inherit}
  ul,ol{margin:0;padding:0;list-style:none}
  h1,h2,h3,h4,p{margin:0}
  :focus-visible{outline:2px solid var(--glow);outline-offset:2px;border-radius:4px}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--r-btn);border:1px solid transparent;
    font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
    transition:transform .18s ease,box-shadow .22s ease,background-color .22s ease,border-color .22s ease,color .22s ease;
    white-space:nowrap;
  }
  .btn-primary{
    background:linear-gradient(180deg,var(--glow),var(--glow-deep));
    color:#06141F;border-color:rgba(56,224,196,.5);
    box-shadow:0 10px 26px rgba(56,224,196,.18);
  }
  .btn-primary:hover{box-shadow:0 0 0 1px rgba(56,224,196,.6),0 0 28px rgba(56,224,196,.35);transform:translateY(-1px)}
  .btn-primary:active{transform:scale(.98)}
  .btn-ghost{
    background:transparent;color:var(--text-hi);border-color:rgba(56,224,196,.45);
  }
  .btn-ghost:hover{background:rgba(56,224,196,.10);border-color:rgba(56,224,196,.75);color:#CFF8F0}
  .btn-ghost:active{transform:scale(.98)}
  .btn-lg{height:48px;padding:0 26px;font-size:16px}
  .btn-sm{height:38px;padding:0 16px;font-size:14px}
  .btn[disabled],.btn.is-disabled{opacity:.4;box-shadow:none;cursor:not-allowed;transform:none}
  .link-sub{
    font-size:14px;color:var(--text-mid);padding:6px 4px;border-bottom:1px solid transparent;
    transition:color .2s ease,border-color .2s ease;
  }
  .link-sub:hover{color:var(--glow);border-bottom-color:rgba(56,224,196,.5)}
  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;color:var(--glow);font-size:14px;font-weight:600;
    border-bottom:1px solid rgba(56,224,196,.35);padding-bottom:2px;transition:color .2s ease,border-color .2s ease;
  }
  .link-arrow:hover{color:#7DF0DC;border-bottom-color:rgba(125,240,220,.85)}

  /* ---------- 头部 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(7,18,30,0);
    border-bottom:1px solid transparent;
    transition:background-color .25s ease,border-color .25s ease,backdrop-filter .25s ease;
  }
  .site-header.is-scrolled{
    background:rgba(7,18,30,.85);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border-bottom-color:var(--line);
  }
  .header-top{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:74px}
  .brand{display:inline-flex;align-items:center;gap:12px}
  .brand-mark{
    width:40px;height:40px;border-radius:12px;flex:none;
    display:grid;place-items:center;
    background:linear-gradient(150deg,var(--glow),#1F7C8E 60%,var(--primary));
    color:#06141F;font-weight:800;font-size:19px;letter-spacing:.02em;
    box-shadow:var(--inset-hi),0 8px 22px rgba(56,224,196,.18);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15}
  .brand-text strong{font-size:17px;font-weight:700;letter-spacing:.02em}
  .brand-text em{font-style:normal;font-size:11px;color:var(--text-low);letter-spacing:.24em;margin-top:3px}
  .header-actions{display:flex;align-items:center;gap:16px}

  .header-nav{padding-bottom:14px}
  .chip-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none}
  .chip-nav::-webkit-scrollbar{display:none}
  .chip{
    display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:var(--r-chip);
    font-size:14px;font-weight:500;color:var(--text-mid);white-space:nowrap;flex:none;
    background:var(--glass);border:1px solid var(--line);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .chip:hover{color:var(--text-hi);border-color:var(--line-strong);background:rgba(18,37,57,.85)}
  .chip.is-active{
    background:var(--glow);color:#06141F;border-color:var(--glow);font-weight:600;
    box-shadow:0 0 20px rgba(56,224,196,.28);
  }

  /* ---------- Hero ---------- */
  .page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
  .page-hero-bg{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;
    opacity:.42;
  }
  .page-hero::after{
    content:'';position:absolute;inset:0;
    background:
      linear-gradient(100deg,rgba(7,18,30,.97) 0%,rgba(7,18,30,.86) 46%,rgba(7,18,30,.55) 100%),
      linear-gradient(180deg,rgba(7,18,30,.2),rgba(7,18,30,.9));
  }
  .page-hero .container{position:relative;z-index:2}
  .hero-inner{padding:72px 0 64px;max-width:760px}
  .crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-low);margin-bottom:22px}
  .crumb a{color:var(--text-mid);transition:color .2s ease}
  .crumb a:hover{color:var(--glow)}
  .crumb span.sep{color:rgba(107,128,152,.6)}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:var(--r-chip);
    background:rgba(56,224,196,.10);border:1px solid rgba(56,224,196,.3);
    color:var(--glow);font-size:12.5px;font-weight:600;letter-spacing:.06em;margin-bottom:20px;
  }
  .page-hero h1{
    font-size:clamp(30px,4.4vw,46px);line-height:1.2;font-weight:700;letter-spacing:-.01em;
  }
  .page-hero .lead{margin-top:18px;font-size:17px;color:var(--text-mid);max-width:620px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

  /* 分类分段控件条 */
  .segbar{border-bottom:1px solid var(--line);background:rgba(11,26,41,.6)}
  .segbar .container{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:16px;padding-bottom:16px}
  .segbar-hint{font-size:13px;color:var(--text-low)}

  /* ---------- 板块 ---------- */
  .section{padding:72px 0}
  .section-alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .section-head{max-width:720px;margin-bottom:36px}
  .section-head h2{font-size:clamp(24px,2.6vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.01em}
  .section-head p{margin-top:12px;color:var(--text-mid);font-size:15.5px}
  .section-head .bar{
    display:block;width:44px;height:3px;border-radius:2px;margin-bottom:18px;
    background:linear-gradient(90deg,var(--glow),rgba(56,224,196,.15));
  }

  /* ---------- 时间线 ---------- */
  .timeline{position:relative;margin-top:8px;padding-left:0}
  .timeline::before{
    content:'';position:absolute;left:21px;top:16px;bottom:16px;width:2px;
    background:linear-gradient(180deg,rgba(56,224,196,.6),rgba(56,224,196,.08));
  }
  .tl-item{position:relative;padding-left:74px;margin-bottom:26px}
  .tl-item:last-child{margin-bottom:0}
  .tl-node{
    position:absolute;left:0;top:2px;width:44px;height:44px;border-radius:999px;
    display:grid;place-items:center;
    font-size:14px;font-weight:700;letter-spacing:.02em;color:var(--glow);
    font-variant-numeric:tabular-nums;
    background:rgba(18,37,57,.92);border:1px solid rgba(56,224,196,.35);
    box-shadow:0 0 0 6px rgba(7,18,30,.92),0 0 18px rgba(56,224,196,.22);
  }
  .tl-card{
    background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
    padding:22px 24px;box-shadow:var(--inset-hi);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    transition:transform .2s ease,border-color .2s ease;
  }
  .tl-card:hover{transform:translateY(-2px);border-color:rgba(56,224,196,.32)}
  .tl-card h3{font-size:19px;font-weight:700;margin-bottom:10px}
  .tl-card p{color:var(--text-mid);font-size:15px}
  .tl-points{margin-top:14px;display:grid;gap:8px}
  .tl-points li{
    position:relative;padding-left:18px;font-size:14px;color:var(--text-mid);
  }
  .tl-points li::before{
    content:'';position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:999px;
    background:var(--glow);box-shadow:0 0 10px rgba(56,224,196,.45);
  }
  .tl-meta{margin-top:14px;display:flex;flex-wrap:wrap;gap:10px}
  .tag{
    display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
    font-size:12px;font-weight:600;letter-spacing:.02em;
    background:rgba(56,224,196,.10);color:var(--glow);border:1px solid rgba(56,224,196,.28);
  }
  .tag-violet{background:rgba(142,123,255,.14);color:#BBAEFF;border-color:rgba(142,123,255,.32)}
  .tag-plain{background:rgba(159,179,200,.08);color:var(--text-mid);border-color:var(--line-strong)}

  /* ---------- 资料准备 / 时效 ---------- */
  .split{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
  .panel{
    background:var(--panel);border:1px solid var(--line);border-radius:var(--r-panel);
    padding:26px;box-shadow:var(--shadow-lg),var(--inset-hi);position:relative;overflow:hidden;
  }
  .panel::before{
    content:'';position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg,rgba(56,224,196,.55),rgba(255,255,255,0) 70%);
  }
  .panel h3{font-size:19px;font-weight:700;margin-bottom:8px}
  .panel > p{color:var(--text-mid);font-size:14.5px}
  .check-list{margin-top:18px;display:grid;gap:12px}
  .check-list li{
    display:grid;grid-template-columns:22px 1fr;gap:12px;align-items:start;
    padding-bottom:12px;border-bottom:1px dashed var(--line);
  }
  .check-list li:last-child{border-bottom:0;padding-bottom:0}
  .check-mark{
    width:22px;height:22px;border-radius:999px;margin-top:3px;
    display:grid;place-items:center;background:rgba(56,224,196,.14);
    color:var(--glow);font-size:12px;font-weight:800;border:1px solid rgba(56,224,196,.3);
  }
  .check-list strong{display:block;font-size:15px;font-weight:600;margin-bottom:2px}
  .check-list span{font-size:13.5px;color:var(--text-mid);line-height:1.7}

  .fig-list{margin-top:6px;display:grid;gap:16px}
  .fig-row{
    display:flex;align-items:baseline;justify-content:space-between;gap:16px;
    padding-bottom:14px;border-bottom:1px solid var(--line);
  }
  .fig-row:last-child{border-bottom:0;padding-bottom:0}
  .fig-row .k{font-size:14px;color:var(--text-mid)}
  .fig-row .v{font-size:26px;font-weight:700;color:var(--glow);font-variant-numeric:tabular-nums;line-height:1.1}
  .fig-row .v small{font-size:13px;color:var(--text-mid);font-weight:500;margin-left:4px}
  .figure-media{
    margin-top:20px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
    aspect-ratio:16/9;background:#102539;
  }
  .figure-media img{width:100%;height:100%;object-fit:cover}
  .caption{margin-top:10px;font-size:12.5px;color:var(--text-low)}

  /* ---------- 等级速览 ---------- */
  .tier-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
  .tier{
    background:var(--glass);border:1px solid var(--line);border-radius:var(--r-panel);
    padding:26px;box-shadow:var(--inset-hi);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    transition:border-color .2s ease,transform .2s ease;
  }
  .tier:hover{border-color:rgba(56,224,196,.3);transform:translateY(-2px)}
  .tier.is-featured{border-color:rgba(56,224,196,.42);box-shadow:0 0 0 1px rgba(56,224,196,.18),var(--inset-hi)}
  .tier-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
  .tier-head h3{font-size:20px;font-weight:700}
  .tier-desc{margin-top:10px;color:var(--text-mid);font-size:14.5px}
  .tier-divider{height:1px;margin:20px 0;background:linear-gradient(90deg,rgba(56,224,196,.5),rgba(255,255,255,0))}
  .tier-rows{display:grid;gap:12px}
  .tier-rows li{display:grid;grid-template-columns:18px 1fr;gap:10px;font-size:14.5px;color:var(--text-mid)}
  .tier-rows li .dot{width:16px;height:16px;border-radius:999px;margin-top:4px;background:rgba(56,224,196,.16);border:1px solid rgba(56,224,196,.36);position:relative}
  .tier-rows li .dot::after{content:'';position:absolute;left:4px;top:3.5px;width:5px;height:5px;border-radius:999px;background:var(--glow)}
  .tier-foot{margin-top:22px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
  .price{font-size:15px;color:var(--text-low)}
  .price b{font-size:26px;color:var(--text-hi);font-variant-numeric:tabular-nums;font-weight:700;margin-right:2px}

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:14px;max-width:880px}
  .faq-item{
    background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--inset-hi);overflow:hidden;
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    transition:border-color .2s ease;
  }
  .faq-item[open]{border-color:rgba(56,224,196,.3)}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;font-size:16px;font-weight:600;color:var(--text-hi);position:relative;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:'';width:9px;height:9px;flex:none;margin-right:4px;
    border-right:2px solid var(--glow);border-bottom:2px solid var(--glow);
    transform:rotate(45deg);transition:transform .25s ease;
  }
  .faq-item[open] summary::after{transform:rotate(-135deg)}
  .faq-body{padding:0 22px 20px;position:relative}
  .faq-body::before{
    content:'';position:absolute;left:0;top:4px;bottom:20px;width:2px;border-radius:2px;
    background:linear-gradient(180deg,var(--glow),rgba(56,224,196,.1));
  }
  .faq-body p{padding-left:18px;font-size:15px;line-height:1.8;color:var(--text-mid)}

  /* ---------- 联系表单 ---------- */
  .contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start}
  .contact-aside h2{font-size:clamp(24px,2.6vw,30px);line-height:1.3;font-weight:700}
  .contact-aside > p{margin-top:14px;color:var(--text-mid);font-size:15.5px}
  .contact-rows{margin-top:26px;display:grid;gap:14px}
  .contact-rows li{
    display:grid;grid-template-columns:84px 1fr;gap:12px;font-size:14.5px;
    padding-bottom:14px;border-bottom:1px solid var(--line);
  }
  .contact-rows li:last-child{border-bottom:0;padding-bottom:0}
  .contact-rows .k{color:var(--text-low)}
  .contact-rows .v{color:var(--text-hi)}
  .contact-media{
    margin-top:26px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;background:#102539;
  }
  .contact-media img{width:100%;height:100%;object-fit:cover}

  .form-panel{
    background:var(--panel);border:1px solid var(--line);border-radius:var(--r-panel);
    padding:28px;box-shadow:var(--shadow-lg),var(--inset-hi);
  }
  .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
  .field{display:flex;flex-direction:column;gap:8px}
  .field-full{grid-column:1 / -1}
  .field label{font-size:13px;color:var(--text-mid);letter-spacing:.02em}
  .field input,.field select,.field textarea{
    width:100%;background:#0E1F31;border:1px solid var(--line-strong);border-radius:var(--r-btn);
    padding:12px 14px;font-size:15px;color:var(--text-hi);
    transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
  }
  .field textarea{min-height:112px;resize:vertical;line-height:1.7}
  .field input::placeholder,.field textarea::placeholder{color:#55708B}
  .field input:hover,.field select:hover,.field textarea:hover{border-color:rgba(255,255,255,.22)}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:rgba(56,224,196,.7);background:#102639;
    box-shadow:0 0 0 3px rgba(56,224,196,.14),0 0 20px rgba(56,224,196,.14);
  }
  .field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--glow) 50%),linear-gradient(135deg,var(--glow) 50%,transparent 50%);
    background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
  .field .hint{font-size:12.5px;color:var(--text-low)}
  .field.has-error input,.field.has-error select,.field.has-error textarea{border-color:rgba(224,161,90,.75)}
  .field.has-error .hint{color:var(--warn)}
  .form-foot{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:4px}
  .form-note{font-size:12.5px;color:var(--text-low);max-width:420px}
  .agree{display:flex;align-items:flex-start;gap:10px;grid-column:1 / -1;font-size:13.5px;color:var(--text-mid)}
  .agree input{width:16px;height:16px;margin-top:4px;accent-color:var(--glow);flex:none}

  /* ---------- CTA ---------- */
  .cta-panel{
    position:relative;overflow:hidden;
    background:linear-gradient(120deg,rgba(20,58,92,.95),rgba(11,26,41,.96));
    border:1px solid var(--line-strong);border-radius:var(--r-panel);
    padding:38px 40px;box-shadow:var(--shadow-lg),var(--inset-hi);
  }
  .cta-panel::before{
    content:'';position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:999px;
    background:radial-gradient(circle,rgba(56,224,196,.20),rgba(56,224,196,0) 68%);
  }
  .cta-inner{position:relative;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center}
  .cta-panel h2{font-size:clamp(22px,2.5vw,28px);font-weight:700;line-height:1.3}
  .cta-panel p{margin-top:10px;color:var(--text-mid);font-size:15px;max-width:560px}
  .cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
  .cta-points span{
    display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
    font-size:13px;color:#CFF3EC;background:rgba(56,224,196,.10);border:1px solid rgba(56,224,196,.26);
  }
  .cta-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch}
  .cta-promise{margin-top:18px;font-size:12.5px;color:var(--text-low)}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--primary);border-top:1px solid rgba(255,255,255,.10);padding:56px 0 0;margin-top:72px}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
  .footer-brand p{margin-top:18px;font-size:14px;color:rgba(231,239,248,.72);max-width:340px;line-height:1.8}
  .footer-contact{margin-top:14px;font-size:13.5px;color:rgba(231,239,248,.66);line-height:1.9}
  .footer-col h4{font-size:14px;font-weight:600;color:var(--text-hi);letter-spacing:.04em;margin-bottom:16px}
  .footer-col a{display:block;font-size:14px;color:rgba(231,239,248,.7);padding:6px 0;transition:color .2s ease,transform .2s ease}
  .footer-col a:hover{color:var(--glow);transform:translateX(2px)}
  .footer-bottom{
    margin-top:44px;border-top:1px solid rgba(255,255,255,.12);padding:18px 32px 24px;
    display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
    font-size:13px;color:rgba(231,239,248,.6);
  }
  .footer-bottom.container{padding-left:32px;padding-right:32px}

  /* ---------- 响应式 ---------- */
  @media (max-width:1100px){
    .split{grid-template-columns:1fr;gap:20px}
    .contact-grid{grid-template-columns:1fr;gap:24px}
  }
  @media (max-width:1023px){
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
    .cta-inner{grid-template-columns:1fr}
    .cta-actions{flex-direction:row;flex-wrap:wrap}
    .tier-grid{grid-template-columns:1fr}
  }
  @media (max-width:767px){
    .container{padding:0 20px}
    .section{padding:56px 0}
    .page-hero .hero-inner{padding:56px 0 48px}
    .header-top{min-height:66px;gap:14px}
    .brand-text em{letter-spacing:.18em}
    .header-actions .link-sub{display:none}
    .segbar .container{flex-direction:column;align-items:flex-start;gap:10px}
    .form-grid{grid-template-columns:1fr}
    .cta-panel{padding:28px 22px}
    .footer-grid{grid-template-columns:1fr;gap:24px}
    .footer-bottom{padding:16px 20px 22px;flex-direction:column;align-items:flex-start}
    .footer-bottom.container{padding-left:20px;padding-right:20px}
    .tl-item{padding-left:0;padding-top:56px}
    .timeline::before{left:21px;top:16px}
  }
  @media (max-width:519px){
    .hero-actions .btn{width:100%}
    .panel,.form-panel,.tier{padding:20px}
    .fig-row .v{font-size:22px}
  }