/* roulang page: index */
:root{
    --ink-950:#060B14; --ink-900:#0A1322; --ink-800:#0D1626; --ink-700:#142034;
    --cyan:#12E8D6; --cyan-deep:#0BA99C; --violet:#6C5CE7; --amber:#FFB020; --rose:#FF3D7F;
    --t1:#E8F1FF; --t2:#A9BCD6; --t3:#6C7F99;
    --line:rgba(255,255,255,.08); --glass-line:rgba(255,255,255,.12);
    --shadow-card:0 18px 40px -18px rgba(0,0,0,.7);
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0; background:var(--ink-950); color:var(--t2);
    font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    font-size:16px; line-height:1.8; -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{color:var(--t1); margin:0; line-height:1.25; letter-spacing:-.01em;}
  p{margin:0 0 1.2em;}
  a{color:inherit; text-decoration:none;}
  img{max-width:100%; display:block;}
  button,input,select,textarea{font-family:inherit; font-size:inherit;}
  ::selection{background:rgba(18,232,214,.3); color:#fff;}

  .container{width:100%; max-width:1200px; margin:0 auto; padding:0 20px;}
  @media (min-width:1024px){ .container{padding:0 32px;} }

  .sec{padding:56px 0;}
  @media (min-width:768px){ .sec{padding:96px 0;} }
  .sec-tight{padding:40px 0;}
  @media (min-width:768px){ .sec-tight{padding:64px 0;} }

  /* 网格底纹 */
  .grid-bg{
    background-image:linear-gradient(rgba(18,232,214,.06) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(18,232,214,.06) 1px,transparent 1px);
    background-size:46px 46px;
  }
  /* 玻璃面板 */
  .glass{
    background:rgba(13,22,38,.62);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border:1px solid var(--glass-line);
  }
  .hairline{border:1px solid var(--line);}
  .divider{height:1px; background:var(--line); border:0;}

  /* 按钮 */
  .btn{
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    border-radius:999px; padding:13px 26px; font-size:15px; font-weight:600;
    cursor:pointer; border:0; transition:all .22s ease-out; white-space:nowrap;
    text-align:center;
  }
  .btn-main{
    background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));
    color:#04211F; box-shadow:0 0 24px rgba(18,232,214,.35);
  }
  .btn-main:hover{filter:brightness(1.08); transform:translateY(-2px); box-shadow:0 0 32px rgba(18,232,214,.55);}
  .btn-main:active{transform:translateY(1px); box-shadow:inset 0 3px 10px rgba(0,0,0,.35);}
  .btn-main:focus-visible{outline:2px solid var(--cyan); outline-offset:2px;}
  .btn-main:disabled{opacity:.45; box-shadow:none; cursor:not-allowed; transform:none;}
  .btn-ghost{
    background:transparent; color:var(--cyan); border:1px solid rgba(18,232,214,.55);
  }
  .btn-ghost:hover{background:rgba(18,232,214,.08); border-color:var(--cyan); transform:translateY(-2px);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn-ghost:focus-visible{outline:2px solid var(--cyan); outline-offset:2px;}
  .btn-sm{padding:9px 18px; font-size:14px;}

  .link-more{
    display:inline-flex; align-items:center; gap:6px; font-size:14px; color:var(--t2);
    border-bottom:1px solid rgba(169,188,214,.4); padding-bottom:2px; transition:all .2s ease-out;
  }
  .link-more:hover{color:var(--cyan); border-color:var(--cyan); transform:translateX(3px);}
  .link-more:focus-visible{outline:2px solid var(--cyan); outline-offset:3px; border-radius:4px;}

  /* 板块标题 */
  .sec-title{
    position:relative; padding-left:16px; font-size:24px; font-weight:700;
  }
  .sec-title::before{
    content:""; position:absolute; left:0; top:6px; bottom:6px; width:4px; border-radius:2px;
    background:linear-gradient(180deg,var(--cyan),var(--cyan-deep));
  }
  @media (min-width:768px){ .sec-title{font-size:32px;} }
  .sec-sub{font-size:15px; color:var(--t3); margin-top:10px;}
  .eyebrow{
    display:inline-flex; align-items:center; gap:8px; font-size:12px; letter-spacing:.14em;
    color:var(--cyan); text-transform:none;
  }
  .eyebrow::before{content:""; width:22px; height:1px; background:var(--cyan); display:block;}

  /* 徽章 */
  .badge{
    display:inline-flex; align-items:center; gap:6px;
    border-radius:999px; padding:4px 12px; font-size:12px; line-height:1.6;
    border:1px solid rgba(255,255,255,.12); background:rgba(255,255,255,.06); color:var(--t2);
  }
  .badge-cyan{border-color:rgba(18,232,214,.45); background:rgba(18,232,214,.1); color:var(--cyan);}
  .badge-violet{border-color:rgba(108,92,231,.5); background:rgba(108,92,231,.12); color:#B7AEFB;}
  .badge-amber{border-color:rgba(255,176,32,.5); background:rgba(255,176,32,.12); color:var(--amber);}
  .badge-rose{border-color:rgba(255,61,127,.5); background:rgba(255,61,127,.12); color:var(--rose);}

  /* 卡片 */
  .card{
    background:var(--ink-800); border:1px solid var(--line); border-radius:14px;
    box-shadow:var(--shadow-card); transition:all .24s ease-out; overflow:hidden;
    display:block; position:relative;
  }
  .card:hover{border-color:rgba(18,232,214,.3); transform:translateY(-4px); box-shadow:0 0 0 1px rgba(18,232,214,.35), var(--shadow-card);}
  .card:focus-visible{outline:2px solid var(--cyan); outline-offset:2px;}
  .card-media{position:relative; aspect-ratio:16/10; overflow:hidden; background:linear-gradient(135deg,#0D1626,#142034);}
  .card-media img{width:100%; height:100%; object-fit:cover; transition:transform .26s ease-out;}
  .card:hover .card-media img{transform:scale(1.03);}
  .topline{position:absolute; top:0; left:0; right:0; height:1px;
    background:linear-gradient(90deg,rgba(18,232,214,0),rgba(18,232,214,.9),rgba(108,92,231,0));}

  /* 榜单/数据条 */
  .stat{
    border:1px solid var(--glass-line); background:rgba(13,22,38,.6); border-radius:10px;
    padding:10px 14px; backdrop-filter:blur(10px);
  }
  .stat b{display:block; color:var(--cyan); font-size:20px; font-weight:700; font-variant-numeric:tabular-nums; line-height:1.3;}
  .stat span{font-size:12px; color:var(--t3);}

  /* 顶部倒计时条 */
  .topbar{
    position:relative; z-index:70;
    background:rgba(13,22,38,.72); backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(18,232,214,.28);
  }
  .topbar-inner{display:flex; align-items:center; gap:14px; min-height:44px; padding:6px 0; overflow-x:auto; scrollbar-width:none;}
  .topbar-inner::-webkit-scrollbar{display:none;}
  .cd-label{font-size:13px; color:var(--t3); white-space:nowrap;}
  .cd-group{display:flex; align-items:center; gap:6px;}
  .cd-cell{
    min-width:32px; text-align:center; font-size:14px; font-weight:700; color:var(--cyan);
    background:rgba(18,232,214,.1); border:1px solid rgba(18,232,214,.3); border-radius:6px;
    padding:2px 6px; font-variant-numeric:tabular-nums;
  }
  .cd-sec{transition:opacity .35s ease;}
  .cd-sec.tick{opacity:.45;}

  /* 导航 */
  .site-header{position:sticky; top:0; z-index:60; transition:all .25s ease-out;}
  .site-header.scrolled{
    background:rgba(6,11,20,.72); backdrop-filter:blur(16px); -webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{display:flex; align-items:center; justify-content:space-between; min-height:68px; gap:18px;}
  .logo{display:flex; align-items:center; gap:11px; flex-shrink:0;}
  .logo-mark{
    width:38px; height:38px; border-radius:11px; flex-shrink:0;
    background:linear-gradient(135deg,rgba(18,232,214,.95),rgba(108,92,231,.9));
    display:flex; align-items:center; justify-content:center;
    box-shadow:0 0 18px rgba(18,232,214,.35);
  }
  .logo-mark svg{width:20px; height:20px; stroke:#04211F;}
  .logo-text{display:flex; flex-direction:column; line-height:1.15;}
  .logo-text b{font-size:15px; color:var(--t1); letter-spacing:.01em; font-weight:700;}
  .logo-text i{font-style:normal; font-size:11px; color:var(--cyan); letter-spacing:.16em;}
  .nav-links{display:none; align-items:center; gap:4px;}
  @media (min-width:1024px){ .nav-links{display:flex;} }
  .nav-links a{
    font-size:14px; color:var(--t2); padding:9px 14px; border-radius:999px;
    transition:all .2s ease-out; white-space:nowrap;
  }
  .nav-links a:hover{color:var(--t1); background:rgba(255,255,255,.06);}
  .nav-links a.active{color:var(--cyan); background:rgba(18,232,214,.1);}
  .nav-links a:focus-visible{outline:2px solid var(--cyan); outline-offset:2px;}
  .nav-cta{display:none;}
  @media (min-width:1024px){ .nav-cta{display:inline-flex;} }
  .burger{
    display:inline-flex; align-items:center; justify-content:center;
    width:44px; height:44px; border-radius:10px; border:1px solid var(--line);
    background:rgba(255,255,255,.04); cursor:pointer;
  }
  .burger:focus-visible{outline:2px solid var(--cyan); outline-offset:2px;}
  @media (min-width:1024px){ .burger{display:none;} }
  .drawer{display:none;}
  .drawer.open{display:block;}
  @media (min-width:1024px){ .drawer{display:none !important;} }
  .drawer a{
    display:block; padding:13px 16px; border-radius:10px; font-size:15px; color:var(--t2);
    border:1px solid transparent;
  }
  .drawer a:hover{background:rgba(18,232,214,.08); border-color:rgba(18,232,214,.28); color:var(--t1);}

  /* Hero */
  .hero{position:relative; overflow:hidden; padding:44px 0 56px;}
  @media (min-width:768px){ .hero{padding:64px 0 88px;} }
  .hero::before{
    content:""; position:absolute; inset:0; pointer-events:none;
    background:radial-gradient(680px 320px at 82% 6%,rgba(108,92,231,.20),transparent 70%),
               radial-gradient(560px 300px at 6% 82%,rgba(18,232,214,.16),transparent 72%);
  }
  .hero-grid{position:relative; display:grid; gap:36px; grid-template-columns:1fr;}
  @media (min-width:1024px){ .hero-grid{grid-template-columns:5fr 7fr; gap:48px; align-items:center;} }
  .hero h1{font-size:30px; font-weight:700; line-height:1.22;}
  @media (min-width:640px){ .hero h1{font-size:36px;} }
  @media (min-width:1024px){ .hero h1{font-size:46px;} }
  .hero h1 em{font-style:normal; color:var(--cyan);}
  .hero-lead{font-size:16px; color:var(--t2); margin-top:18px; max-width:560px;}
  .hero-actions{display:flex; flex-wrap:wrap; gap:14px; margin-top:28px;}
  .hero-stats{display:flex; flex-wrap:wrap; gap:12px; margin-top:30px;}
  .hero-visual{
    position:relative; border-radius:20px; overflow:hidden; aspect-ratio:16/11;
    border:1px solid var(--glass-line); box-shadow:var(--shadow-card);
    background:linear-gradient(135deg,#0D1626,#142034);
  }
  .hero-visual img{position:absolute; inset:0; width:100%; height:100%; object-fit:cover; opacity:.85;}
  .hero-visual .veil{position:absolute; inset:0; background:linear-gradient(160deg,rgba(6,11,20,.55),rgba(6,11,20,.86));}
  .hero-visual .mesh{position:absolute; inset:0;
    background-image:linear-gradient(rgba(18,232,214,.10) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(18,232,214,.10) 1px,transparent 1px);
    background-size:38px 38px;}
  .hero-visual .glow-c{position:absolute; width:220px; height:220px; border-radius:50%;
    background:radial-gradient(circle,rgba(18,232,214,.42),transparent 68%); top:-60px; right:-40px; filter:blur(6px);}
  .hero-visual .glow-v{position:absolute; width:240px; height:240px; border-radius:50%;
    background:radial-gradient(circle,rgba(108,92,231,.42),transparent 68%); bottom:-80px; left:-50px; filter:blur(6px);}
  .scanline{
    position:absolute; left:0; right:0; height:2px;
    background:linear-gradient(90deg,transparent,rgba(18,232,214,.95),transparent);
    animation:scan 5.5s linear infinite;
  }
  @keyframes scan{ 0%{top:8%; opacity:0;} 12%{opacity:1;} 88%{opacity:1;} 100%{top:92%; opacity:0;} }
  .corner-tag{
    position:absolute; right:0; bottom:0; padding:8px 20px; font-size:12px; letter-spacing:.1em;
    color:#04211F; background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));
    border-top-left-radius:14px;
  }

  /* 卖点：1 高卡 + 3 扁卡 */
  .feature-grid{display:grid; gap:20px; grid-template-columns:1fr;}
  @media (min-width:768px){ .feature-grid{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){
    .feature-grid{grid-template-columns:1.15fr 1fr 1fr;}
    .feature-tall{grid-row:span 2;}
  }
  .feature-tall{
    background:linear-gradient(160deg,rgba(18,232,214,.10),rgba(13,22,38,.9) 55%);
    border:1px solid rgba(18,232,214,.28); border-radius:14px; padding:28px;
    position:relative; overflow:hidden; box-shadow:var(--shadow-card);
  }
  .feature-tall::after{
    content:""; position:absolute; right:-70px; bottom:-70px; width:200px; height:200px; border-radius:50%;
    background:radial-gradient(circle,rgba(18,232,214,.25),transparent 70%);
  }
  .feature-flat{
    background:var(--ink-800); border:1px solid var(--line); border-radius:14px; padding:22px;
    display:flex; gap:16px; align-items:flex-start; transition:all .22s ease-out; position:relative; overflow:hidden;
  }
  .feature-flat::before{
    content:""; position:absolute; top:0; left:0; right:0; height:1px;
    background:linear-gradient(90deg,rgba(18,232,214,.85),rgba(108,92,231,.2),transparent);
  }
  .feature-flat:hover{transform:translateY(-4px); border-color:rgba(18,232,214,.3);}
  .icon-box{
    width:44px; height:44px; border-radius:12px; flex-shrink:0;
    display:flex; align-items:center; justify-content:center;
    border:1px solid rgba(18,232,214,.4); background:rgba(18,232,214,.08);
  }
  .icon-box svg{width:22px; height:22px; stroke:var(--cyan); fill:none; stroke-width:1.75;}

  /* 图墙 */
  .wall{display:grid; gap:16px; grid-template-columns:repeat(2,1fr);}
  @media (min-width:1024px){
    .wall{grid-template-columns:repeat(4,1fr); grid-auto-rows:150px;}
    .wall-item.lg{grid-column:span 2; grid-row:span 2;}
    .wall-item.wd{grid-column:span 2;}
    .wall-item.tl{grid-row:span 2;}
  }
  .wall-item{
    position:relative; border-radius:14px; overflow:hidden; aspect-ratio:16/10;
    border:1px solid var(--line); background:linear-gradient(135deg,#0D1626,#142034);
    transition:all .24s ease-out; display:block;
  }
  @media (min-width:1024px){ .wall-item{aspect-ratio:auto; height:100%;} }
  .wall-item img{width:100%; height:100%; object-fit:cover; transition:transform .26s ease-out;}
  .wall-item:hover{border-color:rgba(18,232,214,.35); transform:translateY(-4px);}
  .wall-item:hover img{transform:scale(1.03);}
  .wall-item .cap{
    position:absolute; left:12px; bottom:12px; z-index:2;
    font-size:12px; color:var(--t1); padding:4px 12px; border-radius:999px;
    background:rgba(6,11,20,.72); border:1px solid rgba(18,232,214,.3); backdrop-filter:blur(8px);
  }
  .wall-item .shade{position:absolute; inset:0; background:linear-gradient(180deg,rgba(6,11,20,.1),rgba(6,11,20,.75));}

  /* 流程 */
  .flow{display:grid; gap:16px; grid-template-columns:1fr;}
  @media (min-width:640px){ .flow{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){ .flow{grid-template-columns:repeat(5,1fr);} }
  .flow-step{
    position:relative; padding:22px 18px; border-radius:14px;
    background:var(--ink-800); border:1px solid var(--line); transition:all .22s ease-out;
  }
  .flow-step:hover{border-color:rgba(18,232,214,.32); transform:translateY(-4px);}
  .flow-num{
    display:inline-flex; align-items:center; justify-content:center;
    width:34px; height:34px; border-radius:9px; font-size:14px; font-weight:700; color:#F0EEFF;
    background:linear-gradient(135deg,var(--violet),#4B3FC4); margin-bottom:14px;
  }
  .flow-step h3{font-size:16px; font-weight:600; margin-bottom:8px;}
  .flow-step p{font-size:13.5px; color:var(--t3); margin:0; line-height:1.7;}

  /* CTA 表单 */
  .cta-panel{
    position:relative; border-radius:20px; overflow:hidden;
    background:rgba(13,22,38,.66); backdrop-filter:blur(16px);
    border:1px solid rgba(18,232,214,.28); box-shadow:0 0 0 1px rgba(18,232,214,.08), var(--shadow-card);
    padding:28px;
  }
  @media (min-width:768px){ .cta-panel{padding:44px;} }
  .cta-panel::before{
    content:""; position:absolute; top:-1px; right:-1px; width:120px; height:120px;
    background:linear-gradient(135deg,transparent 50%,rgba(18,232,214,.28) 50%);
    border-top-right-radius:20px;
  }
  .cta-grid{position:relative; display:grid; gap:32px; grid-template-columns:1fr;}
  @media (min-width:1024px){ .cta-grid{grid-template-columns:1fr 1fr; gap:48px; align-items:start;} }
  .rite{display:flex; gap:12px; align-items:flex-start; margin-bottom:14px;}
  .rite svg{width:20px; height:20px; flex-shrink:0; margin-top:4px; stroke:var(--cyan); fill:none; stroke-width:2;}
  .rite span{font-size:15px; color:var(--t2);}
  .field{margin-bottom:16px;}
  .field label{display:block; font-size:13px; color:var(--t3); margin-bottom:8px;}
  .field input,.field select{
    width:100%; padding:14px 15px; border-radius:12px; color:var(--t1);
    background:var(--ink-700); border:1px solid var(--line); transition:all .2s ease-out; outline:none;
  }
  .field input::placeholder{color:#5C6E86;}
  .field input:focus,.field select:focus{
    border-color:var(--cyan); box-shadow:0 0 0 3px rgba(18,232,214,.16), 0 0 18px rgba(18,232,214,.28);
  }
  .field-hint{font-size:12px; color:var(--t3); margin-top:10px;}

  /* FAQ */
  .faq-wrap{display:grid; gap:14px; grid-template-columns:1fr;}
  @media (min-width:1024px){ .faq-wrap{grid-template-columns:repeat(2,1fr); gap:16px 24px; align-items:start;} }
  .faq-item{
    background:var(--ink-800); border:1px solid var(--line); border-radius:14px;
    overflow:hidden; transition:border-color .22s ease-out;
  }
  .faq-item[open]{border-color:rgba(18,232,214,.32);}
  .faq-item summary{
    list-style:none; cursor:pointer; padding:18px 20px 18px 54px; position:relative;
    font-size:15.5px; font-weight:600; color:var(--t1); line-height:1.6;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::before{
    content:attr(data-no); position:absolute; left:18px; top:19px;
    font-size:12px; font-weight:700; color:var(--cyan); font-variant-numeric:tabular-nums;
  }
  .faq-item summary::after{
    content:""; position:absolute; right:20px; top:26px; width:9px; height:9px;
    border-right:2px solid var(--t3); border-bottom:2px solid var(--t3);
    transform:rotate(45deg); transition:transform .22s ease-out;
  }
  .faq-item[open] summary::after{transform:rotate(-135deg); border-color:var(--cyan);}
  .faq-item summary:focus-visible{outline:2px solid var(--cyan); outline-offset:-2px;}
  .faq-body{padding:0 20px 20px 54px; border-left:3px solid transparent; margin-left:0;}
  .faq-item[open] .faq-body{border-left-color:var(--cyan);}
  .faq-body p{font-size:14.5px; color:var(--t2); margin:0; line-height:1.8;}
  @media (max-width:520px){
    .faq-item summary{padding:16px 16px 16px 46px; font-size:15px;}
    .faq-item summary::before{left:14px;}
    .faq-item summary::after{right:16px;}
    .faq-body{padding:0 16px 18px 46px;}
  }

  /* 空态 */
  .empty{
    border:1px dashed rgba(18,232,214,.3); border-radius:14px; padding:40px 24px; text-align:center;
    background:rgba(13,22,38,.5);
  }
  .empty svg{width:38px; height:38px; stroke:var(--t3); fill:none; stroke-width:1.5; margin:0 auto 14px;}
  .empty p{color:var(--t3); font-size:14px; margin:0 0 18px;}

  /* 页脚 */
  .site-footer{background:var(--ink-900); border-top:1px solid var(--line); padding-top:56px;}
  .footer-grid{display:grid; gap:34px; grid-template-columns:1fr;}
  @media (min-width:640px){ .footer-grid{grid-template-columns:repeat(2,1fr);} }
  @media (min-width:1024px){ .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr; gap:40px;} }
  .footer-col h4{font-size:14px; color:var(--t1); margin-bottom:16px; font-weight:600; letter-spacing:.02em;}
  .footer-col ul{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:11px;}
  .footer-col a{font-size:14px; color:var(--t3); transition:all .2s ease-out;}
  .footer-col a:hover{color:var(--cyan); transform:translateX(3px); display:inline-block;}
  .footer-col a:focus-visible{outline:2px solid var(--cyan); outline-offset:2px; border-radius:4px;}
  .footer-bottom{
    margin-top:44px; padding:20px 0 26px; border-top:1px solid var(--line);
    display:flex; flex-wrap:wrap; gap:10px; justify-content:space-between; align-items:center;
  }
  .footer-bottom p{font-size:12.5px; color:var(--t3); margin:0;}

  /* 移动端底部 Tab */
  .mobile-tab{
    position:fixed; left:0; right:0; bottom:0; z-index:80; display:none;
    grid-template-columns:repeat(4,1fr);
    background:rgba(10,19,34,.94); backdrop-filter:blur(16px);
    border-top:1px solid var(--line); padding-bottom:env(safe-area-inset-bottom);
  }
  @media (max-width:1023px){ .mobile-tab{display:grid;} body{padding-bottom:84px;} }
  .mobile-tab a{
    position:relative; display:flex; flex-direction:column; align-items:center; justify-content:center;
    gap:4px; min-height:58px; font-size:11px; color:#7B8CA6; padding-top:8px;
  }
  .mobile-tab a svg{width:21px; height:21px; stroke:currentColor; fill:none; stroke-width:1.75;}
  .mobile-tab a.active{color:var(--cyan);}
  .mobile-tab a.active::before{
    content:""; position:absolute; top:0; left:50%; transform:translateX(-50%);
    width:26px; height:2px; border-radius:2px; background:var(--cyan); box-shadow:0 0 12px rgba(18,232,214,.8);
  }
  .mobile-tab a:focus-visible{outline:2px solid var(--cyan); outline-offset:-3px;}

  /* 返回顶部 */
  .to-top{
    position:fixed; right:16px; bottom:96px; z-index:70; width:44px; height:44px; border-radius:50%;
    display:none; align-items:center; justify-content:center; cursor:pointer;
    background:rgba(13,22,38,.86); border:1px solid rgba(18,232,214,.4);
    box-shadow:0 0 18px rgba(18,232,214,.3); backdrop-filter:blur(10px);
  }
  .to-top svg{width:18px; height:18px; stroke:var(--cyan); fill:none; stroke-width:2;}
  .to-top.show{display:flex;}
  @media (min-width:1024px){ .to-top{bottom:32px; right:32px;} }

  .clamp-2{display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;}
  .clamp-3{display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden;}

/* roulang page: article */
:root {
    --ink-950: #060B14;
    --ink-900: #0A1322;
    --ink-800: #0D1626;
    --ink-700: #142034;
    --cyan: #12E8D6;
    --cyan-deep: #0BA99C;
    --violet: #6C5CE7;
    --amber: #FFB020;
    --rose: #FF3D7F;
    --t1: #E8F1FF;
    --t2: #A9BCD6;
    --t3: #6C7F99;
    --line: rgba(255, 255, 255, .08);
    --glass-line: rgba(255, 255, 255, .12);
    --radius-card: 14px;
    --radius-sm: 10px;
    --radius-hero: 20px;
    --shadow-card: 0 18px 40px -18px rgba(0, 0, 0, .7);
    --shadow-glow: 0 0 24px rgba(18, 232, 214, .35);
  }

  * { box-sizing: border-box; }

  html { scroll-behavior: smooth; }

  body {
    margin: 0;
    background: var(--ink-950);
    color: var(--t2);
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    padding-bottom: 92px;
  }

  @media (min-width: 1024px) {
    body { padding-bottom: 0; }
  }

  img { max-width: 100%; display: block; }
  a { color: inherit; text-decoration: none; }
  button { font-family: inherit; }
  h1, h2, h3, h4 { color: var(--t1); margin: 0; font-weight: 700; }
  p { margin: 0; }

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

  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  @media (min-width: 768px) {
    .container { padding: 0 32px; }
  }

  /* ---------- 顶部导航 ---------- */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(6, 11, 20, .72);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    min-height: 68px;
  }

  .logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
  }

  .logo-mark {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: grid;
    place-items: center;
    background: linear-gradient(140deg, rgba(18, 232, 214, .18), rgba(108, 92, 231, .24));
    border: 1px solid rgba(18, 232, 214, .45);
    box-shadow: 0 0 18px rgba(18, 232, 214, .2);
  }

  .logo-mark svg {
    width: 19px;
    height: 19px;
    stroke: var(--cyan);
    fill: none;
  }

  .logo-text b {
    display: block;
    font-size: 15px;
    line-height: 1.25;
    color: var(--t1);
    letter-spacing: .01em;
  }

  .logo-text i {
    display: block;
    font-style: normal;
    font-size: 11px;
    letter-spacing: .18em;
    color: var(--t3);
  }

  .nav-links { display: none; }

  @media (min-width: 1024px) {
    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
    }
  }

  .nav-links a {
    padding: 9px 15px;
    border-radius: 999px;
    font-size: 14px;
    color: var(--t2);
    transition: color .2s ease-out, background-color .2s ease-out, box-shadow .2s ease-out;
  }

  .nav-links a:hover {
    color: var(--t1);
    background: rgba(18, 232, 214, .08);
  }

  .nav-links a.active {
    color: var(--cyan);
    background: rgba(18, 232, 214, .1);
    box-shadow: inset 0 0 0 1px rgba(18, 232, 214, .35);
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, .04);
    border: 1px solid var(--glass-line);
    color: var(--t1);
    cursor: pointer;
    transition: border-color .2s ease-out, background-color .2s ease-out;
  }

  .menu-toggle:hover { border-color: rgba(18, 232, 214, .45); }

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

  .menu-toggle svg { width: 20px; height: 20px; stroke: currentColor; fill: none; }

  .mobile-drawer {
    display: none;
    border-top: 1px solid var(--line);
    background: rgba(10, 19, 34, .97);
    padding: 12px 20px 20px;
  }

  .mobile-drawer.is-open { display: block; }

  .mobile-drawer a {
    display: block;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--t2);
    border: 1px solid transparent;
  }

  .mobile-drawer a:hover,
  .mobile-drawer a.active {
    color: var(--cyan);
    background: rgba(18, 232, 214, .08);
    border-color: rgba(18, 232, 214, .28);
  }

  /* ---------- 按钮 ---------- */
  .btn-primary,
  .btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 26px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: transform .2s ease-out, box-shadow .2s ease-out, background-color .2s ease-out, color .2s ease-out, border-color .2s ease-out;
  }

  .btn-primary {
    background: linear-gradient(135deg, var(--cyan), var(--cyan-deep));
    color: #04201F;
    box-shadow: var(--shadow-glow);
  }

  .btn-primary:hover {
    transform: translateY(-2px);
    filter: brightness(1.08);
    box-shadow: 0 0 32px rgba(18, 232, 214, .45);
  }

  .btn-primary:active {
    transform: translateY(1px);
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, .35);
  }

  .btn-ghost {
    background: transparent;
    color: var(--cyan);
    border-color: rgba(18, 232, 214, .5);
  }

  .btn-ghost:hover {
    background: rgba(18, 232, 214, .08);
    border-color: var(--cyan);
    transform: translateY(-2px);
  }

  .btn-ghost:active { transform: translateY(1px); }

  .btn-primary[disabled],
  .btn-primary.is-disabled {
    opacity: .45;
    box-shadow: none;
    cursor: not-allowed;
  }

  .btn-sm {
    padding: 10px 18px;
    font-size: 14px;
  }

  /* ---------- 徽章与标签 ---------- */
  .badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12px;
    line-height: 1.6;
    border: 1px solid rgba(255, 255, 255, .12);
    background: rgba(255, 255, 255, .05);
    color: var(--t2);
  }

  .badge-cyan { color: var(--cyan); border-color: rgba(18, 232, 214, .38); background: rgba(18, 232, 214, .1); }
  .badge-violet { color: #B7AEFF; border-color: rgba(108, 92, 231, .42); background: rgba(108, 92, 231, .14); }
  .badge-amber { color: var(--amber); border-color: rgba(255, 176, 32, .38); background: rgba(255, 176, 32, .1); }

  /* ---------- 文章头部 ---------- */
  .article-head-wrap {
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--line);
    background:
      linear-gradient(180deg, rgba(10, 19, 34, .95), rgba(6, 11, 20, .6)),
      url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
  }

  .article-head-wrap::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
    background-size: 48px 48px;
    -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 85%);
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 85%);
    pointer-events: none;
  }

  .article-head-wrap::after {
    content: "";
    position: absolute;
    width: 420px;
    height: 420px;
    right: -120px;
    top: -180px;
    background: radial-gradient(circle, rgba(18, 232, 214, .22), transparent 68%);
    pointer-events: none;
  }

  .article-head {
    position: relative;
    z-index: 1;
    padding: 26px 0 38px;
  }

  .crumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--t3);
    flex-wrap: wrap;
  }

  .crumbs a {
    color: var(--t3);
    border-bottom: 1px solid transparent;
    transition: color .2s ease-out, border-color .2s ease-out;
  }

  .crumbs a:hover { color: var(--cyan); border-color: rgba(18, 232, 214, .5); }

  .crumbs .sep {
    width: 1px;
    height: 11px;
    background: rgba(255, 255, 255, .18);
    display: inline-block;
  }

  .crumbs .crumb-cur {
    max-width: 260px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
  }

  .article-title {
    font-size: 30px;
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin: 18px 0 18px;
    max-width: 900px;
  }

  @media (min-width: 768px) {
    .article-title { font-size: 42px; }
  }

  @media (min-width: 1024px) {
    .article-title { font-size: 48px; }
  }

  .article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 18px;
    font-size: 13px;
    color: var(--t3);
  }

  .article-meta .dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .2);
  }

  /* ---------- 目录 chip（移动端） ---------- */
  .toc-chips {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding: 14px 0 4px;
    scrollbar-width: none;
  }

  .toc-chips::-webkit-scrollbar { display: none; }

  .toc-chips a {
    flex: 0 0 auto;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 12.5px;
    color: var(--t2);
    border: 1px solid var(--glass-line);
    background: rgba(255, 255, 255, .04);
    white-space: nowrap;
  }

  .toc-chips a:hover { color: var(--cyan); border-color: rgba(18, 232, 214, .45); }

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

  /* ---------- 正文布局 ---------- */
  .article-layout {
    display: grid;
    gap: 40px;
    padding: 44px 0 0;
  }

  @media (min-width: 1024px) {
    .article-layout {
      grid-template-columns: minmax(0, 760px) 240px;
      justify-content: center;
      gap: 56px;
      padding: 64px 0 0;
    }
  }

  .article-main { min-width: 0; }

  .article-body {
    font-size: 16.5px;
    line-height: 1.85;
    color: var(--t2);
  }

  .article-body > *:first-child { margin-top: 0; }

  .article-body p { margin: 0 0 1.25em; }

  .article-body h2 {
    position: relative;
    padding-left: 16px;
    margin: 44px 0 16px;
    font-size: 24px;
    line-height: 1.35;
    color: var(--t1);
  }

  .article-body h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: .3em;
    width: 4px;
    height: 1.05em;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--cyan), var(--cyan-deep));
    box-shadow: 0 0 12px rgba(18, 232, 214, .5);
  }

  .article-body h3 {
    margin: 32px 0 12px;
    font-size: 19px;
    color: var(--t1);
  }

  .article-body strong { color: var(--t1); }

  .article-body a {
    color: var(--cyan);
    border-bottom: 1px solid rgba(18, 232, 214, .45);
    transition: color .2s ease-out, border-color .2s ease-out;
  }

  .article-body a:hover { color: #6BFFF2; border-color: #6BFFF2; }

  .article-body ul,
  .article-body ol {
    list-style: none;
    margin: 0 0 1.25em;
    padding: 0;
  }

  .article-body li {
    position: relative;
    padding-left: 22px;
    margin-bottom: 10px;
  }

  .article-body li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: .74em;
    width: 7px;
    height: 7px;
    border-radius: 2px;
    background: var(--cyan);
    box-shadow: 0 0 8px rgba(18, 232, 214, .6);
    transform: rotate(45deg);
  }

  .article-body blockquote {
    margin: 26px 0;
    padding: 18px 22px;
    background: rgba(18, 232, 214, .05);
    border-left: 3px solid var(--cyan);
    border-radius: 0 12px 12px 0;
    color: var(--t2);
  }

  .article-body img {
    width: 100%;
    border-radius: 12px;
    margin: 24px 0;
  }

  .article-body figure { margin: 24px 0; }

  .article-body figcaption {
    margin-top: 10px;
    font-size: 13px;
    color: var(--t3);
    text-align: center;
  }

  .article-body table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14.5px;
  }

  .article-body .table-scroll,
  .article-body figure.table-wrap {
    overflow-x: auto;
    margin: 24px 0;
    border: 1px solid var(--line);
    border-radius: 12px;
  }

  .article-body th,
  .article-body td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--line);
  }

  .article-body th {
    color: var(--t1);
    background: rgba(255, 255, 255, .04);
    font-weight: 600;
  }

  .article-body hr {
    border: 0;
    border-top: 1px solid var(--line);
    margin: 36px 0;
  }

  /* ---------- 右侧目录 ---------- */
  .toc-wrap { display: none; }

  @media (min-width: 1024px) {
    .toc-wrap {
      display: block;
      position: sticky;
      top: 96px;
      align-self: start;
      border-left: 1px solid var(--line);
      padding-left: 18px;
    }
  }

  .toc-wrap.is-empty { display: none; }

  .toc-title {
    font-size: 12px;
    letter-spacing: .16em;
    color: var(--t3);
    margin-bottom: 12px;
  }

  .toc a {
    display: block;
    padding: 8px 10px;
    font-size: 13.5px;
    line-height: 1.5;
    color: var(--t3);
    border-left: 2px solid transparent;
    border-radius: 0 8px 8px 0;
    transition: color .2s ease-out, border-color .2s ease-out, background-color .2s ease-out;
  }

  .toc a:hover { color: var(--t1); background: rgba(255, 255, 255, .04); }

  .toc a.is-active {
    color: var(--cyan);
    border-left-color: var(--cyan);
    background: rgba(18, 232, 214, .06);
  }

  /* ---------- 内嵌 CTA 卡 ---------- */
  .inline-cta {
    margin: 40px 0 0;
    padding: 26px 24px;
    border-radius: var(--radius-card);
    background: linear-gradient(135deg, rgba(18, 232, 214, .08), rgba(108, 92, 231, .1));
    border: 1px solid rgba(18, 232, 214, .3);
    box-shadow: var(--shadow-card);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
  }

  .inline-cta h3 { font-size: 18px; margin-bottom: 6px; }
  .inline-cta p { font-size: 14px; color: var(--t2); }

  .back-link-row {
    margin-top: 26px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
  }

  /* ---------- 空态 ---------- */
  .empty-state {
    padding: 56px 24px;
    text-align: center;
    border-radius: var(--radius-card);
    border: 1px dashed rgba(255, 255, 255, .14);
    background: rgba(13, 22, 38, .6);
  }

  .empty-state svg {
    width: 34px;
    height: 34px;
    margin: 0 auto 14px;
    stroke: var(--cyan);
    fill: none;
  }

  .empty-state p { color: var(--t2); margin-bottom: 18px; }

  /* ---------- 通用板块 ---------- */
  .section { padding: 64px 0 0; }

  @media (min-width: 1024px) {
    .section { padding: 90px 0 0; }
  }

  .section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 28px;
  }

  .h2 {
    position: relative;
    padding-left: 16px;
    font-size: 23px;
    line-height: 1.3;
  }

  @media (min-width: 768px) {
    .h2 { font-size: 30px; }
  }

  .h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: .26em;
    width: 4px;
    height: 1em;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--cyan), var(--cyan-deep));
    box-shadow: 0 0 12px rgba(18, 232, 214, .5);
  }

  .section-sub {
    font-size: 14px;
    color: var(--t3);
    margin-top: 10px;
  }

  .text-link {
    font-size: 14px;
    color: var(--cyan);
    border-bottom: 1px solid rgba(18, 232, 214, .45);
    transition: color .2s ease-out, border-color .2s ease-out, letter-spacing .2s ease-out;
  }

  .text-link:hover { color: #6BFFF2; border-color: #6BFFF2; letter-spacing: .02em; }

  /* ---------- 相关阅读卡片 ---------- */
  .card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  @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)); gap: 24px; }
  }

  .post-card {
    display: flex;
    flex-direction: column;
    background: var(--ink-800);
    border: 1px solid var(--glass-line);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: transform .24s ease-out, border-color .24s ease-out, box-shadow .24s ease-out;
  }

  .post-card:hover {
    transform: translateY(-4px);
    border-color: rgba(18, 232, 214, .35);
    box-shadow: var(--shadow-card), 0 0 0 1px rgba(18, 232, 214, .35);
  }

  .post-thumb {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: linear-gradient(140deg, rgba(18, 232, 214, .16), rgba(108, 92, 231, .22));
  }

  .post-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .26s ease-out;
  }

  .post-card:hover .post-thumb img { transform: scale(1.03); }

  .post-body {
    padding: 20px 22px 22px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
  }

  .post-body h3 {
    font-size: 17px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .post-body p {
    font-size: 14px;
    color: var(--t2);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .post-meta {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 12.5px;
    color: var(--t3);
  }

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

  .faq-item {
    border: 1px solid var(--glass-line);
    border-radius: var(--radius-card);
    background: rgba(13, 22, 38, .8);
    overflow: hidden;
    transition: border-color .2s ease-out;
  }

  .faq-item:hover { border-color: rgba(18, 232, 214, .3); }

  .faq-item summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 22px;
    color: var(--t1);
    font-size: 16px;
    font-weight: 600;
  }

  .faq-item summary::-webkit-details-marker { display: none; }

  .faq-num {
    font-size: 13px;
    font-variant-numeric: tabular-nums;
    color: var(--cyan);
    letter-spacing: .08em;
    flex-shrink: 0;
  }

  .faq-q { flex: 1; }

  .faq-icon {
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--t3);
    border-bottom: 2px solid var(--t3);
    transform: rotate(45deg) translateY(-2px);
    transition: transform .24s ease-out, border-color .24s ease-out;
    flex-shrink: 0;
  }

  .faq-item[open] .faq-icon {
    transform: rotate(-135deg) translateY(-2px);
    border-color: var(--cyan);
  }

  .faq-item[open] summary { color: var(--cyan); }

  .faq-a {
    padding: 0 22px 20px 22px;
    font-size: 15px;
    color: var(--t2);
    border-top: 1px solid var(--line);
    padding-top: 16px;
  }

  /* ---------- 页脚 ---------- */
  .site-footer {
    margin-top: 90px;
    padding: 56px 0 32px;
    border-top: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(10, 19, 34, .7), rgba(6, 11, 20, 1));
  }

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

  @media (min-width: 640px) {
    .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  }

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

  .footer-col h4 {
    font-size: 14px;
    letter-spacing: .06em;
    color: var(--t1);
    margin-bottom: 16px;
  }

  .footer-col ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 10px;
  }

  .footer-col ul a {
    font-size: 14px;
    color: var(--t2);
    transition: color .2s ease-out, padding-left .2s ease-out;
    display: inline-block;
  }

  .footer-col ul a:hover { color: var(--cyan); padding-left: 2px; }

  .footer-bottom {
    margin-top: 40px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
    font-size: 13px;
    color: var(--t3);
  }

  /* ---------- 移动端底部 Tab ---------- */
  .mobile-tabbar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 70;
    display: flex;
    background: rgba(6, 11, 20, .94);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-top: 1px solid var(--line);
    padding-bottom: env(safe-area-inset-bottom);
  }

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

  .mobile-tabbar a {
    position: relative;
    flex: 1;
    min-height: 58px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    font-size: 11.5px;
    color: #7B8CA6;
    transition: color .2s ease-out;
  }

  .mobile-tabbar a svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.75;
    stroke-linecap: round;
    stroke-linejoin: round;
  }

  .mobile-tabbar a.is-active { color: var(--cyan); }

  .mobile-tabbar a.is-active::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 26px;
    height: 2px;
    border-radius: 2px;
    background: var(--cyan);
    box-shadow: 0 0 10px rgba(18, 232, 214, .7);
  }

  /* ---------- 返回顶部 ---------- */
  .to-top {
    position: fixed;
    right: 18px;
    bottom: 78px;
    z-index: 65;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: rgba(13, 22, 38, .92);
    border: 1px solid rgba(18, 232, 214, .45);
    box-shadow: 0 0 20px rgba(18, 232, 214, .28);
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: opacity .24s ease-out, transform .24s ease-out;
  }

  .to-top.is-visible { opacity: 1; pointer-events: auto; }
  .to-top:hover { transform: translateY(-2px); }
  .to-top svg { width: 18px; height: 18px; stroke: var(--cyan); fill: none; stroke-width: 2; }

  @media (min-width: 1024px) {
    .to-top { bottom: 32px; right: 32px; }
  }

/* roulang page: category1 */
:root{
  --ink-950:#060B14;
  --ink-900:#0A1322;
  --ink-800:#0D1626;
  --ink-700:#142034;
  --cyan:#12E8D6;
  --cyan-deep:#0BA99C;
  --violet:#6C5CE7;
  --amber:#FFB020;
  --rose:#FF3D7F;
  --t1:#E8F1FF;
  --t2:#A9BCD6;
  --t3:#6C7F99;
  --line:rgba(255,255,255,.08);
  --glass:rgba(255,255,255,.12);
  --r-card:14px;
  --r-sm:10px;
  --r-pill:999px;
  --r-hero:20px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.7);
  --shadow-glow:0 0 24px rgba(18,232,214,.35);
  --gap-card:22px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background-color:var(--ink-950);
  background-image:
    linear-gradient(rgba(255,255,255,.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.026) 1px, transparent 1px);
  background-size:64px 64px;
  background-position:center top;
  color:var(--t2);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{color:var(--t1);margin:0;font-weight:700;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{display:block;max-width:100%;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
::selection{background:rgba(18,232,214,.28);color:#EAF6FF;}

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

/* ---------- 通用组件 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  line-height:1.6;
  letter-spacing:.02em;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.06);
  color:var(--t2);
  white-space:nowrap;
}
.badge-cyan{border-color:rgba(18,232,214,.34);background:rgba(18,232,214,.08);color:#8FF5EC;}
.badge-violet{border-color:rgba(108,92,231,.4);background:rgba(108,92,231,.14);color:#BCB3FF;}
.badge-amber{border-color:rgba(255,176,32,.36);background:rgba(255,176,32,.1);color:#FFD489;}

.btn-primary,
.btn-ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .22s ease-out, box-shadow .22s ease-out, background-color .22s ease-out, border-color .22s ease-out, color .22s ease-out, filter .22s ease-out;
}
.btn-primary{
  background-image:linear-gradient(135deg,var(--cyan),var(--cyan-deep));
  color:#04231F;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-2px);
  box-shadow:0 0 32px rgba(18,232,214,.45);
}
.btn-primary:active{transform:translateY(1px);box-shadow:inset 0 2px 8px rgba(0,0,0,.35);}
.btn-ghost{
  background:transparent;
  border-color:rgba(18,232,214,.45);
  color:#8FF5EC;
}
.btn-ghost:hover{
  background:rgba(18,232,214,.08);
  border-color:rgba(18,232,214,.75);
  transform:translateY(-2px);
}
.btn-ghost:active{transform:translateY(1px);}
.btn-primary:focus-visible,
.btn-ghost:focus-visible,
a:focus-visible,
summary:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-primary[disabled],
.btn-ghost[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed;transform:none;}

.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--t2);
  border-bottom:1px solid rgba(18,232,214,.45);
  padding-bottom:2px;
  transition:color .2s ease-out, gap .2s ease-out;
}
.text-link:hover{color:var(--cyan);gap:10px;}

.card{
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:border-color .24s ease-out, transform .24s ease-out, box-shadow .24s ease-out;
}
.card:hover{
  border-color:rgba(18,232,214,.32);
  transform:translateY(-4px);
  box-shadow:0 0 0 1px rgba(18,232,214,.22), 0 22px 44px -20px rgba(0,0,0,.8);
}

.section{padding:88px 0;}
.section-title{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:30px;
  line-height:1.3;
  margin:0;
}
.section-title::before{
  content:"";
  width:4px;
  height:24px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--cyan),var(--violet));
  flex:none;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:34px;
}
.section-desc{
  font-size:14.5px;
  color:var(--t3);
  max-width:620px;
  margin-top:10px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:transparent;
  transition:background-color .28s ease-out, backdrop-filter .28s ease-out, border-color .28s ease-out;
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{
  background:rgba(6,11,20,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:70px;
}
.logo{display:inline-flex;align-items:center;gap:10px;}
.logo-mark{
  width:36px;
  height:36px;
  border-radius:11px;
  display:grid;
  place-items:center;
  background:linear-gradient(140deg,rgba(18,232,214,.22),rgba(108,92,231,.28));
  border:1px solid var(--glass);
  flex:none;
}
.logo-mark svg{width:19px;height:19px;stroke:var(--cyan);fill:none;}
.logo-text{display:flex;flex-direction:column;line-height:1.14;}
.logo-text b{color:var(--t1);font-size:15px;font-weight:700;letter-spacing:.02em;}
.logo-text i{color:var(--t3);font-size:11px;font-style:normal;letter-spacing:.22em;}

.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{
  position:relative;
  font-size:14.5px;
  color:var(--t2);
  padding:6px 0;
  transition:color .2s ease-out;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;
  right:100%;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  transition:right .25s ease-out;
}
.nav-links a:hover{color:var(--t1);}
.nav-links a:hover::after{right:0;}
.nav-links a.active{color:var(--cyan);}
.nav-links a.active::after{right:0;}

.header-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--glass);
  background:rgba(255,255,255,.04);
  cursor:pointer;
  place-items:center;
  color:var(--t1);
}
.nav-toggle:hover{border-color:rgba(18,232,214,.45);}
.nav-toggle svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;}

.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(8,14,26,.96);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  padding:18px 24px 24px;
}
.drawer.open{display:block;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:16px;}
.drawer-nav a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:13px 14px;
  border-radius:var(--r-sm);
  color:var(--t2);
  font-size:15px;
  border:1px solid transparent;
  transition:background-color .2s, color .2s, border-color .2s;
}
.drawer-nav a:hover{background:rgba(255,255,255,.04);color:var(--t1);}
.drawer-nav a.active{color:var(--cyan);border-color:rgba(18,232,214,.28);background:rgba(18,232,214,.06);}

/* ---------- 移动端底部 Tab ---------- */
.tabbar{
  display:none;
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:70;
  height:calc(60px + env(safe-area-inset-bottom, 0px));
  padding-bottom:env(safe-area-inset-bottom, 0px);
  background:rgba(8,14,26,.94);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
  align-items:stretch;
}
.tabbar a{
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  min-height:44px;
  font-size:11px;
  color:#7B8CA6;
  position:relative;
  transition:color .2s ease-out;
}
.tabbar a svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.tabbar a.active{color:var(--cyan);}
.tabbar a.active::before{
  content:"";
  position:absolute;
  top:0;
  left:50%;
  transform:translateX(-50%);
  width:26px;
  height:2px;
  border-radius:0 0 2px 2px;
  background:var(--cyan);
  box-shadow:0 0 12px rgba(18,232,214,.7);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:18px;
  bottom:calc(60px + env(safe-area-inset-bottom, 0px) + 12px);
  z-index:65;
  width:44px;
  height:44px;
  border-radius:50%;
  display:none;
  place-items:center;
  border:1px solid rgba(18,232,214,.45);
  background:rgba(13,22,38,.92);
  color:var(--cyan);
  cursor:pointer;
  opacity:0;
  transform:translateY(10px);
  transition:opacity .25s ease-out, transform .25s ease-out, box-shadow .25s ease-out;
  box-shadow:var(--shadow-glow);
}
.to-top.show{opacity:1;transform:translateY(0);}
.to-top svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--ink-900);
  padding:74px 0 62px;
}
.page-hero__media{
  position:absolute;
  inset:0;
  background-image:linear-gradient(180deg,rgba(6,11,20,.62) 0%,rgba(6,11,20,.9) 62%,rgba(6,11,20,.98) 100%),url(/assets/images/backpic/back-1.webp);
  background-size:cover;
  background-position:center;
  opacity:.95;
}
.page-hero__grid{
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(18,232,214,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18,232,214,.06) 1px, transparent 1px);
  background-size:52px 52px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  pointer-events:none;
}
.page-hero__scan{
  position:absolute;
  left:0;right:0;
  top:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,232,214,.75),transparent);
  opacity:.7;
  animation:scanMove 7s linear infinite;
}
@keyframes scanMove{
  0%{transform:translateY(20px);opacity:0;}
  20%{opacity:.75;}
  80%{opacity:.6;}
  100%{transform:translateY(340px);opacity:0;}
}
.page-hero__glow{
  position:absolute;
  width:420px;
  height:420px;
  border-radius:50%;
  right:-120px;
  top:-160px;
  background:radial-gradient(circle,rgba(18,232,214,.22),transparent 66%);
  filter:blur(6px);
  pointer-events:none;
}
.page-hero__glow--violet{
  right:auto;
  left:-140px;
  top:auto;
  bottom:-220px;
  background:radial-gradient(circle,rgba(108,92,231,.24),transparent 66%);
}
.page-hero__inner{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--t3);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--t3);transition:color .2s;}
.breadcrumb a:hover{color:var(--cyan);}
.breadcrumb span{color:rgba(255,255,255,.2);}
.breadcrumb .current{color:var(--t2);}
.page-hero h1{
  font-size:44px;
  line-height:1.22;
  margin:16px 0 14px;
  max-width:840px;
}
.page-hero .hero-sub{
  font-size:16.5px;
  color:var(--t2);
  max-width:640px;
  line-height:1.8;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:30px;
}
.stat-chip{
  display:flex;
  align-items:center;
  gap:8px;
  padding:9px 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--glass);
  background:rgba(255,255,255,.05);
  font-size:13.5px;
  color:var(--t2);
}
.stat-chip b{
  color:var(--cyan);
  font-size:15px;
  font-variant-numeric:tabular-nums;
  font-weight:700;
}

/* ---------- 双栏 + 侧栏目录 ---------- */
.layout-two-col{
  display:grid;
  grid-template-columns:236px minmax(0,1fr);
  gap:56px;
  align-items:start;
  padding-top:72px;
  padding-bottom:24px;
}
.side-toc{
  position:sticky;
  top:96px;
}
.toc-title{
  font-size:13px;
  letter-spacing:.16em;
  color:var(--t3);
  margin-bottom:16px;
}
.toc-nav{display:flex;flex-direction:column;gap:2px;}
.toc-nav a{
  position:relative;
  padding:10px 12px 10px 16px;
  border-radius:var(--r-sm);
  font-size:14px;
  color:var(--t3);
  border-left:2px solid transparent;
  transition:color .2s ease-out, background-color .2s ease-out, border-color .2s ease-out, transform .2s ease-out;
}
.toc-nav a:hover{color:var(--t1);background:rgba(255,255,255,.035);transform:translateX(2px);}
.toc-nav a.active{
  color:var(--cyan);
  border-left-color:var(--cyan);
  background:rgba(18,232,214,.06);
}

/* ---------- 步骤链 ---------- */
.step-block{
  position:relative;
  padding-bottom:52px;
  scroll-margin-top:100px;
}
.step-block:last-child{padding-bottom:16px;}
.step-block::after{
  content:"";
  position:absolute;
  left:21px;
  top:56px;
  bottom:6px;
  width:1px;
  background:linear-gradient(180deg,rgba(108,92,231,.5),rgba(18,232,214,.16) 60%,transparent);
}
.step-block:last-child::after{display:none;}
.step-head{display:flex;align-items:center;gap:14px;margin-bottom:14px;}
.step-num{
  width:44px;
  height:44px;
  flex:none;
  border-radius:12px;
  display:grid;
  place-items:center;
  font-size:15px;
  font-weight:700;
  color:#EDEAFF;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(140deg,rgba(108,92,231,.92),rgba(108,92,231,.46));
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 10px 24px -14px rgba(108,92,231,.9);
  position:relative;
  z-index:2;
}
.step-head h2{font-size:26px;line-height:1.3;}
.step-block > p{
  font-size:15.5px;
  color:var(--t2);
  margin-bottom:18px;
  max-width:760px;
}
.step-card{
  display:flex;
  gap:18px;
  padding:20px 22px;
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  margin-bottom:14px;
  transition:border-color .24s ease-out, transform .24s ease-out;
}
.step-card:hover{
  border-color:rgba(18,232,214,.3);
  transform:translateY(-3px);
}
.step-card__idx{
  width:30px;
  height:30px;
  flex:none;
  border-radius:9px;
  display:grid;
  place-items:center;
  font-size:13px;
  font-weight:700;
  color:var(--cyan);
  font-variant-numeric:tabular-nums;
  background:rgba(18,232,214,.1);
  border:1px solid rgba(18,232,214,.3);
}
.step-card__body h3{font-size:16.5px;margin-bottom:5px;}
.step-card__body p{font-size:14.5px;color:var(--t3);line-height:1.75;}
.step-note{
  display:flex;
  gap:10px;
  align-items:flex-start;
  padding:14px 18px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,176,32,.28);
  background:rgba(255,176,32,.06);
  font-size:14px;
  color:#F2D9A8;
}
.step-note svg{width:17px;height:17px;flex:none;margin-top:3px;stroke:var(--amber);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 场景卡 ---------- */
.scene-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap-card);
}
.scene-card{
  overflow:hidden;
  display:flex;
  flex-direction:column;
}
.scene-card__media{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:linear-gradient(140deg,rgba(18,232,214,.16),rgba(108,92,231,.24));
}
.scene-card__media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .28s ease-out;
}
.scene-card:hover .scene-card__media img{transform:scale(1.03);}
.scene-card__media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,11,20,.1),rgba(6,11,20,.72));
}
.scene-card__tag{
  position:absolute;
  left:14px;
  bottom:12px;
  z-index:2;
}
.scene-card__body{padding:20px 22px 24px;}
.scene-card__body h3{font-size:17.5px;margin-bottom:8px;}
.scene-card__body p{font-size:14.5px;color:var(--t3);line-height:1.78;}

/* ---------- 信息列表 ---------- */
.news-panel{
  padding:26px 28px;
  border-radius:var(--r-card);
  background:linear-gradient(180deg,rgba(13,22,38,.96),rgba(10,19,34,.96));
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.news-row{
  display:flex;
  align-items:center;
  gap:16px;
  padding:16px 6px;
  border-bottom:1px solid var(--line);
  transition:background-color .2s ease-out, transform .2s ease-out;
}
.news-row:last-child{border-bottom:none;}
.news-row:hover{background:rgba(255,255,255,.03);transform:translateX(2px);}
.news-row__dot{
  width:8px;
  height:8px;
  border-radius:50%;
  flex:none;
  background:var(--cyan);
  box-shadow:0 0 10px rgba(18,232,214,.8);
}
.news-row__main{flex:1;min-width:0;}
.news-row__main h3{font-size:15.5px;margin-bottom:3px;}
.news-row__main p{font-size:13.5px;color:var(--t3);}
.news-row__meta{
  font-size:13px;
  color:var(--t3);
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}

/* ---------- 检查清单 ---------- */
.check-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
}
.check-item{
  display:flex;
  gap:14px;
  padding:20px 22px;
  background:rgba(13,22,38,.9);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:border-color .24s ease-out, transform .24s ease-out;
}
.check-item:hover{border-color:rgba(18,232,214,.28);transform:translateY(-3px);}
.check-ico{
  width:26px;
  height:26px;
  flex:none;
  border-radius:8px;
  display:grid;
  place-items:center;
  background:rgba(18,232,214,.1);
  border:1px solid rgba(18,232,214,.32);
}
.check-ico svg{width:14px;height:14px;stroke:var(--cyan);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;}
.check-item h3{font-size:16px;margin-bottom:6px;}
.check-item p{font-size:14.5px;color:var(--t3);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-list{max-width:860px;}
.faq-item{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--ink-800);
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color .24s ease-out, background-color .24s ease-out;
}
.faq-item:hover{border-color:rgba(255,255,255,.16);}
.faq-item[open]{border-color:rgba(18,232,214,.3);background:rgba(13,22,38,.98);}
.faq-item summary{
  display:flex;
  align-items:center;
  gap:14px;
  padding:18px 22px;
  cursor:pointer;
  color:var(--t1);
  font-size:16px;
  font-weight:600;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  width:3px;
  height:20px;
  border-radius:2px;
  background:var(--t3);
  flex:none;
  transition:background-color .24s ease-out, box-shadow .24s ease-out;
}
.faq-item[open] summary::before{background:var(--cyan);box-shadow:0 0 12px rgba(18,232,214,.6);}
.faq-item summary::after{
  content:"";
  width:8px;
  height:8px;
  margin-left:auto;
  border-right:1.7px solid var(--t3);
  border-bottom:1.7px solid var(--t3);
  transform:rotate(45deg);
  transition:transform .24s ease-out, border-color .24s ease-out;
  flex:none;
}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--cyan);}
.faq-body{padding:0 22px 20px 39px;}
.faq-body p{font-size:15px;color:var(--t2);line-height:1.8;}

/* ---------- 入口卡 + CTA ---------- */
.entry-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:var(--gap-card);
  margin-bottom:44px;
}
.entry-card{
  display:flex;
  align-items:center;
  gap:16px;
  padding:22px 24px;
  background:var(--ink-800);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:border-color .24s ease-out, transform .24s ease-out, background-color .24s ease-out;
}
.entry-card:hover{
  border-color:rgba(18,232,214,.34);
  background:rgba(15,26,45,.98);
  transform:translateY(-3px);
}
.entry-card__ico{
  width:40px;
  height:40px;
  flex:none;
  border-radius:12px;
  display:grid;
  place-items:center;
  background:linear-gradient(140deg,rgba(18,232,214,.16),rgba(108,92,231,.22));
  border:1px solid var(--glass);
}
.entry-card__ico svg{width:19px;height:19px;stroke:var(--cyan);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.entry-card h3{font-size:16px;margin-bottom:3px;}
.entry-card p{font-size:13.5px;color:var(--t3);}
.entry-card__arrow{margin-left:auto;color:var(--t3);transition:transform .2s ease-out, color .2s ease-out;}
.entry-card:hover .entry-card__arrow{color:var(--cyan);transform:translateX(3px);}

.cta-band{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-hero);
  border:1px solid rgba(18,232,214,.28);
  background:linear-gradient(135deg,rgba(13,22,38,.98),rgba(18,232,214,.08) 55%,rgba(108,92,231,.16));
  box-shadow:0 0 0 1px rgba(18,232,214,.12), 0 26px 60px -28px rgba(0,0,0,.9);
  padding:40px 42px;
}
.cta-band::before{
  content:"";
  position:absolute;
  right:-60px;
  top:-60px;
  width:220px;
  height:220px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(18,232,214,.22),transparent 68%);
  pointer-events:none;
}
.cta-band::after{
  content:"";
  position:absolute;
  right:0;
  bottom:0;
  width:110px;
  height:110px;
  background:linear-gradient(135deg,transparent 49.4%,rgba(18,232,214,.45) 50%,transparent 51%);
  opacity:.6;
  pointer-events:none;
}
.cta-band__inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:36px;
  align-items:center;
}
.cta-band h2{font-size:26px;line-height:1.35;margin:14px 0 10px;}
.cta-band p.lead{font-size:14.5px;color:var(--t2);max-width:560px;}
.cta-points{display:flex;flex-direction:column;gap:9px;margin-top:18px;}
.cta-points li{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:14.5px;
  color:var(--t2);
}
.cta-points svg{width:16px;height:16px;flex:none;stroke:var(--cyan);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;}
.cta-actions{display:flex;flex-direction:column;gap:12px;}
.cta-note{font-size:12.5px;color:var(--t3);line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:96px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,19,34,.75),rgba(6,11,20,1));
  padding:64px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
}
.footer-col h4{
  font-size:14.5px;
  color:var(--t1);
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{
  font-size:14px;
  color:var(--t3);
  transition:color .2s ease-out, padding-left .2s ease-out;
}
.footer-col ul a:hover{color:var(--cyan);padding-left:3px;}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--t3);}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  body{padding-bottom:96px;}
  body .container{padding:0 24px;}
  .nav-links{display:none;}
  .nav-toggle{display:grid;}
  .tabbar{display:flex;}
  .to-top{display:grid;}
  .layout-two-col{
    grid-template-columns:minmax(0,1fr);
    gap:32px;
    padding-top:52px;
  }
  .side-toc{
    position:sticky;
    top:70px;
    z-index:30;
    padding:12px 0 12px;
    margin:0 -24px;
    padding-left:24px;
    padding-right:24px;
    background:rgba(8,14,26,.94);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
  }
  .toc-title{display:none;}
  .toc-nav{
    flex-direction:row;
    gap:8px;
    overflow-x:auto;
    scrollbar-width:none;
    -ms-overflow-style:none;
    padding-bottom:2px;
  }
  .toc-nav::-webkit-scrollbar{display:none;}
  .toc-nav a{
    white-space:nowrap;
    padding:8px 14px;
    border-radius:var(--r-pill);
    border:1px solid var(--line);
    border-left:1px solid var(--line);
    font-size:13.5px;
  }
  .toc-nav a.active{
    border-color:rgba(18,232,214,.45);
    background:rgba(18,232,214,.1);
  }
  .section{padding:64px 0;}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .entry-grid{grid-template-columns:minmax(0,1fr);gap:14px;}
  .cta-band__inner{grid-template-columns:minmax(0,1fr);gap:26px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}

@media (max-width:767px){
  .page-hero{padding:52px 0 46px;}
  .page-hero h1{font-size:32px;}
  .page-hero .hero-sub{font-size:15.5px;}
  .section-title{font-size:23px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .step-head h2{font-size:21px;}
  .step-card{flex-direction:column;gap:12px;padding:18px 18px;}
  .scene-grid{grid-template-columns:minmax(0,1fr);}
  .check-grid{grid-template-columns:minmax(0,1fr);}
  .news-panel{padding:20px 18px;}
  .news-row{flex-wrap:wrap;gap:8px 14px;}
  .news-row__meta{width:100%;}
  .cta-band{padding:28px 22px;}
  .cta-band h2{font-size:21px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .site-footer{padding-bottom:calc(32px + 24px);}
}

@media (max-width:519px){
  body .container{padding:0 20px;}
  .page-hero h1{font-size:28px;}
  .hero-stats{gap:8px;}
  .stat-chip{font-size:12.5px;padding:7px 13px;}
  .step-head{align-items:flex-start;}
  .step-num{width:38px;height:38px;font-size:14px;border-radius:10px;}
  .step-block::after{left:18px;}
  .btn-primary,.btn-ghost{padding:11px 20px;font-size:14.5px;}
  .entry-card{padding:18px 18px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --ink-950:#060B14; --ink-900:#0A1322; --ink-800:#0D1626; --ink-700:#142034;
  --cyan:#12E8D6; --cyan-deep:#0BA99C; --violet:#6C5CE7; --amber:#FFB020; --rose:#FF3D7F;
  --t1:#E8F1FF; --t2:#A9BCD6; --t3:#6C7F99;
  --line:rgba(255,255,255,.08); --glass-line:rgba(255,255,255,.12);
  --r-card:14px; --r-sm:10px; --r-hero:20px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.7);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--ink-950);color:var(--t2);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;padding-bottom:96px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease);}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--t1);line-height:1.3;margin:0;}
p{margin:0 0 1.15em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
@media (min-width:768px){.container{padding:0 32px;}}
@media (min-width:1024px){body{padding-bottom:0;}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;border-bottom:1px solid transparent;
  transition:background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.scrolled{
  background:rgba(6,11,20,.72);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;}
.logo-mark{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;flex:none;
  border:1px solid rgba(18,232,214,.35);
  background:linear-gradient(145deg,rgba(18,232,214,.18),rgba(108,92,231,.14));
  box-shadow:0 0 18px rgba(18,232,214,.18);
}
.logo-mark svg{width:20px;height:20px;stroke:var(--cyan);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{color:var(--t1);font-size:15px;font-weight:700;letter-spacing:.02em;}
.logo-text i{color:var(--cyan);font-size:11px;font-style:normal;letter-spacing:.2em;}
.nav-links{display:none;}
@media (min-width:1024px){.nav-links{display:flex;align-items:center;gap:4px;}}
.nav-links a{
  position:relative;padding:9px 14px;border-radius:999px;font-size:14.5px;color:var(--t2);white-space:nowrap;
}
.nav-links a:hover{color:var(--t1);background:rgba(255,255,255,.05);}
.nav-links a.active{
  color:var(--cyan);background:rgba(18,232,214,.09);
  box-shadow:inset 0 0 0 1px rgba(18,232,214,.28);
}
.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  display:grid;place-items:center;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--glass-line);background:rgba(255,255,255,.04);color:var(--t1);cursor:pointer;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.nav-toggle:hover{border-color:rgba(18,232,214,.45);background:rgba(18,232,214,.08);}
.nav-toggle:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.nav-toggle svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;}
@media (min-width:1024px){.nav-toggle{display:none;}}
@media (max-width:639px){.header-cta{display:none;}}
.mobile-drawer{
  max-height:0;overflow:hidden;transition:max-height .32s var(--ease);
  background:rgba(6,11,20,.97);border-top:1px solid transparent;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.mobile-drawer.open{max-height:340px;border-top-color:var(--line);}
.mobile-drawer a{
  display:block;padding:15px 20px;font-size:15px;color:var(--t2);border-bottom:1px solid var(--line);
}
.mobile-drawer a.active{color:var(--cyan);background:rgba(18,232,214,.06);}
@media (min-width:1024px){.mobile-drawer{display:none;}}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:12px;font-size:15px;font-weight:600;padding:13px 22px;border:1px solid transparent;
  cursor:pointer;transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--cyan),var(--cyan-deep));color:#04141A;
  box-shadow:0 0 24px rgba(18,232,214,.35);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 32px rgba(18,232,214,.5);}
.btn-primary:active{transform:translateY(1px);box-shadow:inset 0 2px 8px rgba(0,0,0,.35);}
.btn-primary:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.btn-ghost{background:transparent;border-color:rgba(18,232,214,.55);color:var(--cyan);}
.btn-ghost:hover{background:rgba(18,232,214,.08);border-color:var(--cyan);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-ghost:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;}
.btn-sm{padding:10px 16px;font-size:14px;border-radius:10px;}
.btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed;}

/* ---------- Badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12px;line-height:1.6;border:1px solid var(--glass-line);background:rgba(255,255,255,.05);color:var(--t2);
}
.badge-cyan{color:var(--cyan);border-color:rgba(18,232,214,.4);background:rgba(18,232,214,.1);}
.badge-violet{color:#C6BEFB;border-color:rgba(108,92,231,.45);background:rgba(108,92,231,.14);}
.badge-amber{color:var(--amber);border-color:rgba(255,176,32,.4);background:rgba(255,176,32,.1);}

/* ---------- Hero band ---------- */
.page-hero{position:relative;overflow:hidden;isolation:isolate;border-bottom:1px solid var(--line);}
.page-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.26;z-index:-3;}
.page-hero-overlay{
  position:absolute;inset:0;z-index:-2;
  background:linear-gradient(180deg,rgba(6,11,20,.7) 0%,rgba(6,11,20,.92) 58%,var(--ink-950) 100%);
}
.page-hero-grid{
  position:absolute;inset:0;z-index:-1;
  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:52px 52px;
  -webkit-mask-image:radial-gradient(circle at 50% 25%,#000 0%,transparent 78%);
  mask-image:radial-gradient(circle at 50% 25%,#000 0%,transparent 78%);
}
.page-hero::before,
.page-hero::after{content:"";position:absolute;border-radius:50%;filter:blur(6px);pointer-events:none;z-index:-1;}
.page-hero::before{width:280px;height:280px;left:-90px;top:40px;background:radial-gradient(circle,rgba(18,232,214,.22),transparent 70%);}
.page-hero::after{width:320px;height:320px;right:-110px;bottom:-60px;background:radial-gradient(circle,rgba(108,92,231,.22),transparent 70%);}
.page-hero-scan{
  position:absolute;left:0;right:0;top:0;height:1px;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(18,232,214,.75),transparent);
  animation:scanMove 7s linear infinite;
}
@keyframes scanMove{
  0%{transform:translateY(0);opacity:0;}
  10%{opacity:.9;}
  100%{transform:translateY(460px);opacity:0;}
}
.page-hero-inner{position:relative;padding:56px 0 48px;text-align:center;}
@media (min-width:1024px){.page-hero-inner{padding:80px 0 64px;}}
.breadcrumb{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:center;align-items:center;
  font-size:13px;color:var(--t3);margin-bottom:22px;
}
.breadcrumb span.sep{width:1px;height:12px;background:rgba(255,255,255,.16);display:inline-block;}
.breadcrumb a:hover{color:var(--cyan);}
.page-hero h1{
  font-size:30px;font-weight:700;letter-spacing:-.01em;line-height:1.25;
  margin:16px auto 14px;max-width:820px;
}
@media (min-width:1024px){.page-hero h1{font-size:46px;}}
.page-hero .hero-sub{max-width:640px;margin:0 auto;color:var(--t2);font-size:15px;line-height:1.8;}
@media (min-width:768px){.page-hero .hero-sub{font-size:16.5px;}}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:28px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:36px;
}
@media (min-width:768px){.hero-stats{grid-template-columns:repeat(4,minmax(0,1fr));}}
.stat-item{
  border:1px solid var(--glass-line);border-radius:12px;padding:14px 16px;text-align:left;
  background:rgba(13,22,38,.72);transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.stat-item:hover{border-color:rgba(18,232,214,.35);transform:translateY(-3px);}
.stat-item b{display:block;color:var(--t1);font-size:15px;font-weight:600;margin-bottom:4px;}
.stat-item span{color:var(--t3);font-size:13px;line-height:1.6;}

/* ---------- Sections ---------- */
.section{padding:56px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.section-alt{background:var(--ink-900);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head.is-center{margin:0 auto 40px;text-align:center;}
.section-head h2{
  position:relative;padding-left:16px;font-size:24px;font-weight:700;letter-spacing:-.01em;margin-bottom:12px;
}
@media (min-width:1024px){.section-head h2{font-size:32px;}}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.3em;width:4px;height:22px;border-radius:2px;
  background:linear-gradient(180deg,var(--cyan),var(--violet));
}
.section-head.is-center h2{padding-left:0;padding-top:16px;}
.section-head.is-center h2::before{left:50%;transform:translateX(-50%);top:0;width:44px;height:3px;}
.section-head p{color:var(--t2);font-size:15px;line-height:1.8;}

/* ---------- Compare card ---------- */
.compare-card{
  border:1px solid var(--glass-line);border-radius:var(--r-card);background:var(--ink-800);
  overflow:hidden;box-shadow:var(--shadow-card);
}
.compare-head{
  display:grid;grid-template-columns:150px 1fr;gap:16px;padding:14px 22px;
  font-size:13px;letter-spacing:.08em;color:var(--t3);
  background:rgba(255,255,255,.03);border-bottom:1px solid var(--line);
}
.compare-row{
  display:grid;grid-template-columns:150px 1fr;gap:16px;align-items:start;
  padding:16px 22px;border-bottom:1px solid var(--line);transition:background .22s var(--ease);
}
.compare-row:last-child{border-bottom:none;}
.compare-row:nth-child(even){background:rgba(255,255,255,.022);}
.compare-row:hover{background:rgba(18,232,214,.05);}
.compare-row .label{color:var(--t1);font-size:14.5px;font-weight:600;}
.compare-row p{color:var(--t2);font-size:14.5px;line-height:1.75;}
@media (max-width:520px){
  .compare-head{display:none;}
  .compare-row{grid-template-columns:1fr;gap:6px;padding:16px 18px;}
}

/* ---------- Point cards ---------- */
.point-card{
  height:100%;border:1px solid var(--glass-line);border-radius:var(--r-card);background:var(--ink-800);
  padding:24px;transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.point-card:hover{transform:translateY(-4px);border-color:rgba(18,232,214,.32);box-shadow:var(--shadow-card);}
.point-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
  border:1px solid rgba(18,232,214,.3);background:rgba(18,232,214,.08);
}
.point-icon svg{width:20px;height:20px;stroke:var(--cyan);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.point-card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.point-card p{font-size:14.5px;color:var(--t2);line-height:1.78;}

/* ---------- Checklist ---------- */
.check-item{
  display:flex;gap:12px;align-items:flex-start;padding:16px 18px;
  border:1px solid var(--line);border-radius:12px;background:rgba(13,22,38,.62);
  transition:border-color .22s var(--ease),background .22s var(--ease),transform .22s var(--ease);
}
.check-item:hover{border-color:rgba(18,232,214,.3);background:rgba(18,232,214,.05);transform:translateY(-2px);}
.check-item svg{width:18px;height:18px;flex:none;margin-top:4px;stroke:var(--cyan);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.check-item b{display:block;color:var(--t1);font-size:15px;font-weight:600;margin-bottom:3px;}
.check-item span{font-size:13.5px;color:var(--t3);line-height:1.7;}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px;max-width:860px;margin:0 auto;}
.faq-item{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--ink-800);
  overflow:hidden;transition:border-color .22s var(--ease);
}
.faq-item[open]{border-color:rgba(18,232,214,.35);}
.faq-item summary{
  display:flex;align-items:center;gap:12px;padding:18px 20px;cursor:pointer;
  color:var(--t1);font-size:15.5px;font-weight:600;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:focus-visible{outline:2px solid var(--cyan);outline-offset:-2px;}
.faq-num{color:var(--cyan);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;flex:none;}
.faq-mark{margin-left:auto;color:var(--t3);font-size:18px;line-height:1;transition:transform .24s var(--ease),color .24s var(--ease);}
.faq-item[open] .faq-mark{transform:rotate(45deg);color:var(--cyan);}
.faq-body{padding:16px 20px 20px 48px;border-top:1px solid var(--line);font-size:14.5px;line-height:1.82;color:var(--t2);}
@media (max-width:520px){.faq-body{padding-left:20px;}}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;border:1px solid rgba(18,232,214,.25);border-radius:var(--r-hero);
  background:linear-gradient(122deg,rgba(13,22,38,.96),rgba(10,19,34,.9));
  padding:30px 24px;box-shadow:var(--shadow-card);
}
@media (min-width:1024px){.cta-band{padding:44px 40px;}}
.cta-band::after{
  content:"";position:absolute;right:-70px;top:-70px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,232,214,.2),transparent 70%);pointer-events:none;
}
.cta-band::before{
  content:"";position:absolute;left:0;top:0;width:120px;height:4px;border-radius:0 0 4px 0;
  background:linear-gradient(90deg,var(--cyan),transparent);
}
.cta-title{font-size:22px;font-weight:700;color:var(--t1);margin-bottom:12px;}
@media (min-width:1024px){.cta-title{font-size:28px;}}
.cta-list{display:grid;gap:10px;margin-top:18px;}
.cta-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--t2);}
.cta-list svg{width:17px;height:17px;flex:none;margin-top:5px;stroke:var(--cyan);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:56px;padding:56px 0 24px;background:var(--ink-900);border-top:1px solid var(--line);
}
@media (min-width:1024px){.site-footer{margin-top:96px;}}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr;}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;}}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--t1);}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:var(--t3);}
.footer-col ul a:hover{color:var(--cyan);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
}
.footer-bottom p{font-size:13px;color:var(--t3);margin:0;}

/* ---------- Mobile tab bar ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:rgba(6,11,20,.94);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding:6px 4px calc(6px + env(safe-area-inset-bottom));
}
@media (min-width:1024px){.mobile-tabbar{display:none;}}
.tab-item{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  min-height:44px;color:#7B8CA6;font-size:11.5px;line-height:1.2;
}
.tab-item svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.tab-item:hover{color:var(--t1);}
.tab-item.active{color:var(--cyan);}
.tab-item.active::before{
  content:"";position:absolute;top:-6px;width:26px;height:2px;border-radius:2px;
  background:var(--cyan);box-shadow:0 0 10px rgba(18,232,214,.7);
}