/* roulang page: index */
:root{
      --bg: #060b10;
      --bg-2: #0a121a;
      --bg-3: #101a25;
      --panel: rgba(15, 22, 31, .92);
      --panel-2: rgba(18, 28, 39, .88);
      --line: rgba(223, 232, 242, .08);
      --line-2: rgba(48, 240, 198, .14);
      --text: #eef5fb;
      --muted: #a2b3c4;
      --soft: #7f93a8;
      --accent: #30f0c6;
      --accent-2: #8c7bff;
      --accent-3: #dfe7f1;
      --warning: #f6c56d;
      --shadow: 0 18px 50px rgba(0, 0, 0, .38);
      --shadow-soft: 0 10px 30px rgba(0, 0, 0, .22);
      --radius-lg: 18px;
      --radius-md: 14px;
      --radius-sm: 10px;
      --sidebar-w: 292px;
      --topbar-h: 68px;
      --transition: .24s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      color:var(--text);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
      background:
        radial-gradient(1000px 700px at 20% 0%, rgba(48,240,198,.12), transparent 54%),
        radial-gradient(900px 700px at 100% 18%, rgba(140,123,255,.11), transparent 45%),
        linear-gradient(180deg, #05080d 0%, #081017 42%, #060b10 100%);
      overflow-x:hidden;
      padding-bottom:108px;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
      background-size: 34px 34px;
      opacity:.12;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.75), transparent 92%);
      z-index:0;
    }
    body::after{
      content:"";
      position:fixed;
      inset:auto -8% -140px -8%;
      height:380px;
      pointer-events:none;
      background: radial-gradient(circle at 50% 45%, rgba(48,240,198,.12), transparent 42%);
      filter: blur(20px);
      z-index:0;
    }
    a{color:inherit;text-decoration:none;transition:var(--transition)}
    a:hover{color:var(--text)}
    img{max-width:100%;height:auto;display:block}
    button,input,select,textarea{font:inherit}
    ::selection{background:rgba(48,240,198,.28);color:#fff}
    :focus-visible{
      outline:2px solid rgba(48,240,198,.72);
      outline-offset:3px;
    }
    .app-shell{position:relative;z-index:1}
    .sidebar{
      position:fixed;
      inset:0 auto 0 0;
      width:var(--sidebar-w);
      padding:22px 18px;
      background:
        linear-gradient(180deg, rgba(11,18,26,.98), rgba(8,13,19,.95));
      border-right:1px solid var(--line);
      box-shadow: 12px 0 34px rgba(0,0,0,.16);
      display:flex;
      flex-direction:column;
      gap:18px;
      z-index:20;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      padding:12px 12px 14px;
      border:1px solid var(--line);
      border-radius:18px;
      background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
      box-shadow: var(--shadow-soft);
    }
    .brand-mark{
      width:44px;height:44px;
      border-radius:14px;
      background:
        linear-gradient(135deg, rgba(48,240,198,.95), rgba(140,123,255,.92));
      display:grid;
      place-items:center;
      color:#061019;
      font-weight:800;
      letter-spacing:.06em;
      box-shadow: 0 10px 24px rgba(48,240,198,.18);
      flex:0 0 auto;
    }
    .brand h1,
    .mobile-brand h1{
      margin:0;
      font-size:1.04rem;
      line-height:1.2;
      font-weight:800;
      letter-spacing:.02em;
      color:var(--text);
    }
    .brand p,
    .mobile-brand p{
      margin:.22rem 0 0;
      color:var(--muted);
      font-size:.85rem;
      line-height:1.45;
    }
    .sidebar-nav{
      display:flex;
      flex-direction:column;
      gap:8px;
      padding:2px 0;
    }
    .sidebar-nav a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:13px 14px;
      border:1px solid transparent;
      border-radius:14px;
      color:var(--muted);
      background:transparent;
      font-weight:600;
      letter-spacing:.01em;
    }
    .sidebar-nav a:hover,
    .sidebar-nav a:focus-visible{
      background:rgba(255,255,255,.03);
      border-color:var(--line);
      color:var(--text);
      transform:translateX(2px);
    }
    .sidebar-nav a.active{
      background: linear-gradient(135deg, rgba(48,240,198,.14), rgba(140,123,255,.10));
      color:var(--text);
      border-color: rgba(48,240,198,.22);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
    }
    .nav-pill{
      font-size:.72rem;
      color:var(--soft);
      background:rgba(255,255,255,.04);
      border:1px solid var(--line);
      border-radius:999px;
      padding:2px 8px;
      flex:0 0 auto;
    }
    .sidebar-panel{
      margin-top:auto;
      padding:16px;
      border-radius:18px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
      border:1px solid var(--line);
    }
    .sidebar-panel small{color:var(--soft)}
    .sidebar-actions{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:12px;
    }
    .btn-brand,
    .btn-ghost,
    .btn-soft{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:11px 16px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:700;
      letter-spacing:.01em;
      transition:var(--transition);
      text-decoration:none !important;
      box-shadow:none;
    }
    .btn-brand{
      background:linear-gradient(135deg, var(--accent), #52f6d0);
      color:#07121b;
      box-shadow:0 12px 26px rgba(48,240,198,.18);
    }
    .btn-brand:hover{
      color:#07121b;
      transform:translateY(-2px);
      box-shadow:0 16px 34px rgba(48,240,198,.24);
    }
    .btn-brand:active{transform:translateY(0)}
    .btn-ghost{
      color:var(--text);
      background:rgba(255,255,255,.03);
      border-color:var(--line);
    }
    .btn-ghost:hover{
      color:var(--text);
      background:rgba(255,255,255,.06);
      border-color:rgba(48,240,198,.22);
      transform:translateY(-1px);
    }
    .btn-soft{
      color:var(--text);
      background:rgba(140,123,255,.10);
      border-color:rgba(140,123,255,.20);
    }
    .btn-soft:hover{
      color:var(--text);
      background:rgba(140,123,255,.16);
      transform:translateY(-1px);
    }
    .topbar{
      position:sticky;
      top:0;
      z-index:25;
      display:none;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      height:var(--topbar-h);
      padding:0 16px;
      border-bottom:1px solid var(--line);
      background:rgba(8,15,22,.86);
      backdrop-filter: blur(14px);
    }
    .mobile-brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .mobile-brand .brand-mark{width:40px;height:40px;border-radius:13px}
    .menu-toggle{
      width:44px;height:44px;
      border-radius:14px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.03);
      color:var(--text);
      display:inline-grid;
      place-items:center;
      transition:var(--transition);
    }
    .menu-toggle:hover{
      background:rgba(255,255,255,.07);
      border-color:rgba(48,240,198,.22);
      transform:translateY(-1px);
    }
    .menu-toggle svg{width:20px;height:20px}
    .main-content{
      margin-left:var(--sidebar-w);
      padding:28px 28px 0;
      position:relative;
      z-index:1;
    }
    .section{
      padding:18px 0 10px;
      scroll-margin-top:90px;
    }
    .section-shell{
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.016));
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .section-head{
      padding:26px 26px 0;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--accent);
      font-size:.78rem;
      letter-spacing:.12em;
      text-transform:uppercase;
      font-weight:800;
      margin-bottom:10px;
    }
    .eyebrow::before{
      content:"";
      width:10px;height:10px;
      border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 6px rgba(48,240,198,.12);
    }
    .section-title{
      margin:0;
      font-size:clamp(1.35rem, 1.1rem + 1vw, 2rem);
      line-height:1.25;
      font-weight:800;
      letter-spacing:.01em;
    }
    .section-note{
      margin:12px 0 0;
      max-width:820px;
      color:var(--muted);
      line-height:1.8;
      font-size:1rem;
    }
    .hero{
      padding-top:0;
    }
    .hero-shell{
      padding:26px;
      border-radius:22px;
      border:1px solid var(--line);
      background:
        radial-gradient(900px 380px at 20% 0%, rgba(48,240,198,.12), transparent 58%),
        radial-gradient(700px 360px at 90% 10%, rgba(140,123,255,.13), transparent 48%),
        linear-gradient(180deg, rgba(18,27,38,.88), rgba(10,16,23,.92));
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
      gap:24px;
      align-items:stretch;
    }
    .hero-copy{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      min-height:520px;
      gap:24px;
    }
    .hero-top{
      display:flex;
      flex-direction:column;
      gap:18px;
      padding-right:12px;
    }
    .brand-chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      width:max-content;
      padding:8px 12px;
      border-radius:999px;
      border:1px solid rgba(48,240,198,.18);
      background:rgba(48,240,198,.08);
      color:#c9fff3;
      font-size:.8rem;
      font-weight:700;
    }
    .brand-chip .dot{
      width:7px;height:7px;border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 6px rgba(48,240,198,.12);
    }
    .hero h1{
      margin:0;
      font-size:clamp(2.1rem, 1.5rem + 2.2vw, 4.25rem);
      line-height:1.04;
      letter-spacing:-.03em;
      font-weight:900;
      max-width:12ch;
    }
    .hero-lead{
      margin:0;
      max-width:760px;
      color:#cad7e3;
      line-height:1.9;
      font-size:1.03rem;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:6px;
    }
    .hero-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:8px;
    }
    .meta-chip{
      padding:8px 12px;
      border-radius:999px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.03);
      color:var(--muted);
      font-size:.84rem;
      font-weight:600;
    }
    .hero-visual{
      position:relative;
      min-height:520px;
      display:grid;
      place-items:stretch;
    }
    .dp-cover{
      position:relative;
      height:100%;
      min-height:520px;
      border-radius:22px;
      overflow:hidden;
      border:1px solid var(--line);
      background:
        linear-gradient(155deg, rgba(48,240,198,.12), transparent 34%),
        linear-gradient(335deg, rgba(140,123,255,.14), transparent 34%),
        linear-gradient(180deg, #111a24 0%, #090e15 100%);
      box-shadow:var(--shadow);
    }
    .dp-cover::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(600px 300px at 30% 22%, rgba(255,255,255,.09), transparent 50%),
        radial-gradient(520px 260px at 76% 72%, rgba(48,240,198,.14), transparent 50%);
      opacity:.9;
    }
    .cover-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: 30px 30px;
      opacity:.22;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.75), transparent 88%);
    }
    .cover-panel{
      position:absolute;
      inset:22px 22px 24px;
      border-radius:20px;
      border:1px solid rgba(223,231,241,.10);
      background:linear-gradient(180deg, rgba(10,16,23,.62), rgba(10,16,23,.28));
      backdrop-filter: blur(10px);
      overflow:hidden;
    }
    .cover-panel::after{
      content:"";
      position:absolute;
      inset:auto 0 0 0;
      height:42%;
      background: linear-gradient(180deg, transparent, rgba(6,11,16,.88));
      pointer-events:none;
    }
    .cover-topline{
      display:flex;
      justify-content:space-between;
      gap:12px;
      padding:18px 18px 0;
      position:relative;
      z-index:1;
    }
    .cover-status{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(48,240,198,.09);
      color:#d7fff7;
      border:1px solid rgba(48,240,198,.18);
      font-weight:700;
      font-size:.82rem;
    }
    .cover-status .pulse{
      width:8px;height:8px;border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 7px rgba(48,240,198,.12);
    }
    .cover-tag{
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      color:var(--muted);
      border:1px solid var(--line);
      font-size:.82rem;
      font-weight:600;
    }
    .cover-stage{
      position:absolute;
      inset:86px 18px 18px;
      z-index:1;
      display:grid;
      grid-template-columns: 1.05fr .85fr;
      gap:14px;
    }
    .cover-focus,
    .cover-stack{
      border-radius:18px;
      border:1px solid rgba(223,231,241,.10);
      background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.025));
      overflow:hidden;
    }
    .cover-focus{
      position:relative;
      padding:18px;
      display:flex;
      flex-direction:column;
      justify-content:flex-end;
      min-height:100%;
    }
    .cover-focus::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 30% 25%, rgba(48,240,198,.22), transparent 26%),
        radial-gradient(circle at 78% 30%, rgba(140,123,255,.20), transparent 28%),
        linear-gradient(135deg, rgba(12,19,27,.30), rgba(12,19,27,.02));
    }
    .cover-focus h3{
      margin:0 0 8px;
      font-size:1.6rem;
      line-height:1.1;
      font-weight:900;
      position:relative;
      z-index:1;
    }
    .cover-focus p{
      margin:0;
      color:#c8d6e2;
      line-height:1.7;
      position:relative;
      z-index:1;
    }
    .cover-badges{
      position:relative;
      z-index:1;
      display:flex;
      gap:8px;
      flex-wrap:wrap;
      margin-top:14px;
    }
    .mini-badge{
      padding:7px 10px;
      border-radius:999px;
      font-size:.76rem;
      font-weight:700;
      border:1px solid rgba(223,231,241,.10);
      background:rgba(0,0,0,.18);
      color:#eff7ff;
    }
    .cover-stack{
      display:flex;
      flex-direction:column;
      gap:12px;
      padding:14px;
      transform: translateY(18px) rotate(-1.5deg);
    }
    .stack-card{
      flex:1;
      border-radius:16px;
      border:1px solid rgba(223,231,241,.10);
      background:
        linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.025));
      padding:14px 14px 12px;
      display:flex;
      flex-direction:column;
      gap:8px;
      min-height:0;
    }
    .stack-card:nth-child(1){transform: translateX(10px)}
    .stack-card:nth-child(2){transform: translateX(-6px)}
    .stack-card:nth-child(3){transform: translateX(14px)}
    .stack-label{
      display:inline-flex;
      align-items:center;
      gap:8px;
      font-size:.75rem;
      color:#dffaf4;
      font-weight:700;
    }
    .stack-label::before{
      content:"";
      width:8px;height:8px;border-radius:50%;
      background:var(--accent);
    }
    .stack-value{
      font-size:1.35rem;
      line-height:1.1;
      font-weight:900;
      letter-spacing:-.02em;
    }
    .stack-desc{
      margin:0;
      color:var(--muted);
      line-height:1.6;
      font-size:.9rem;
    }
    .kpi-row{
      display:grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap:14px;
    }
    .kpi-card{
      border:1px solid var(--line);
      border-radius:18px;
      background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
      padding:18px;
      min-height:122px;
      box-shadow:var(--shadow-soft);
      transition:var(--transition);
    }
    .kpi-card:hover{
      transform:translateY(-3px);
      border-color:rgba(48,240,198,.20);
      box-shadow:0 16px 34px rgba(0,0,0,.28);
    }
    .kpi-card .kpi-no{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:40px;height:40px;
      border-radius:14px;
      background:rgba(48,240,198,.10);
      border:1px solid rgba(48,240,198,.18);
      color:#d8fff6;
      font-weight:900;
      margin-bottom:12px;
    }
    .kpi-card h3{
      margin:0 0 8px;
      font-size:1rem;
      line-height:1.35;
      font-weight:800;
    }
    .kpi-card p{
      margin:0;
      color:var(--muted);
      line-height:1.7;
      font-size:.93rem;
    }
    .panel-grid{
      display:grid;
      grid-template-columns: repeat(12, minmax(0, 1fr));
      gap:14px;
    }
    .matrix-card,
    .compare-card,
    .feedback-card,
    .latest-card,
    .faq-card,
    .form-card,
    .info-card{
      border:1px solid var(--line);
      border-radius:18px;
      background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.018));
      box-shadow:var(--shadow-soft);
      overflow:hidden;
      transition:var(--transition);
    }
    .matrix-card:hover,
    .compare-card:hover,
    .feedback-card:hover,
    .latest-card:hover,
    .info-card:hover{
      transform:translateY(-2px);
      border-color:rgba(48,240,198,.18);
      box-shadow:0 18px 38px rgba(0,0,0,.30);
    }
    .matrix-card{
      padding:20px;
      min-height:100%;
    }
    .matrix-card h3,
    .compare-card h3,
    .feedback-card h3,
    .latest-card h3,
    .faq-card h3,
    .form-card h3,
    .info-card h3{
      margin:0 0 10px;
      font-size:1.08rem;
      line-height:1.35;
      font-weight:800;
    }
    .matrix-card p,
    .compare-card p,
    .feedback-card p,
    .latest-card p,
    .info-card p{
      margin:0;
      color:var(--muted);
      line-height:1.75;
      font-size:.95rem;
    }
    .matrix-card .matrix-foot,
    .compare-card .matrix-foot,
    .feedback-card .matrix-foot{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-top:16px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 10px;
      border-radius:999px;
      color:#dff8f3;
      background:rgba(48,240,198,.09);
      border:1px solid rgba(48,240,198,.18);
      font-size:.76rem;
      font-weight:700;
      letter-spacing:.01em;
    }
    .tag.alt{
      color:#e8e3ff;
      background:rgba(140,123,255,.10);
      border-color:rgba(140,123,255,.18);
    }
    .tag.muted{
      color:#e8eff7;
      background:rgba(255,255,255,.04);
      border-color:var(--line);
    }
    .link-arrow{
      color:#d9fff5;
      font-weight:700;
      font-size:.92rem;
      text-decoration:none !important;
    }
    .link-arrow span{transition:var(--transition);display:inline-block}
    .link-arrow:hover span{transform:translateX(3px)}
    .matrix-a{grid-column:span 6}
    .matrix-b{grid-column:span 3}
    .matrix-c{grid-column:span 3}
    .matrix-d{grid-column:span 4}
    .matrix-e{grid-column:span 4}
    .matrix-f{grid-column:span 4}
    .compare-wrap{
      padding:22px;
    }
    .compare-grid{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:16px;
      align-items:stretch;
    }
    .compare-side{
      padding:18px;
      border-radius:18px;
      background:rgba(255,255,255,.03);
      border:1px solid var(--line);
    }
    .compare-side.bad{
      background:linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.02));
    }
    .compare-side.good{
      background:linear-gradient(180deg, rgba(48,240,198,.07), rgba(255,255,255,.02));
      border-color:rgba(48,240,198,.18);
    }
    .compare-side .side-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:16px;
    }
    .side-head strong{
      font-size:1.02rem;
      font-weight:800;
    }
    .stack-list{
      display:grid;
      gap:12px;
      margin-top:12px;
    }
    .stack-item{
      display:grid;
      gap:7px;
    }
    .stack-item .label-line{
      display:flex;
      justify-content:space-between;
      gap:12px;
      color:var(--muted);
      font-size:.9rem;
      font-weight:600;
    }
    .meter{
      position:relative;
      height:11px;
      border-radius:999px;
      background:rgba(255,255,255,.07);
      overflow:hidden;
    }
    .meter::after{
      content:"";
      position:absolute;
      inset:0 auto 0 0;
      width:var(--value);
      border-radius:inherit;
      background:linear-gradient(90deg, rgba(48,240,198,.95), rgba(140,123,255,.90));
      box-shadow:0 0 24px rgba(48,240,198,.18);
    }
    .feedback-grid{
      display:grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap:14px;
      padding:0 26px 26px;
    }
    .feedback-card{
      padding:18px;
      min-height:100%;
    }
    .quote-mark{
      width:38px;height:38px;
      border-radius:13px;
      display:grid;
      place-items:center;
      background:rgba(255,255,255,.05);
      border:1px solid var(--line);
      color:var(--accent);
      font-size:1.2rem;
      margin-bottom:12px;
    }
    .feedback-card blockquote{
      margin:0;
      color:#dbe6ef;
      line-height:1.8;
      font-size:.95rem;
    }
    .feedback-card footer{
      margin-top:12px;
      color:var(--soft);
      font-size:.85rem;
    }
    .latest-wrap{
      padding:0 26px 26px;
    }
    .latest-grid{
      display:grid;
      grid-template-columns: minmax(0, 1.65fr) minmax(280px, .85fr);
      gap:16px;
      align-items:start;
    }
    .updates-list{
      display:grid;
      gap:12px;
    }
    .update-item{
      display:grid;
      grid-template-columns: auto minmax(0, 1fr) auto;
      gap:14px;
      align-items:start;
      padding:16px;
      border-radius:16px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.025);
      transition:var(--transition);
    }
    .update-item:hover{
      background:rgba(255,255,255,.04);
      border-color:rgba(48,240,198,.18);
      transform:translateY(-2px);
    }
    .update-dot{
      width:12px;height:12px;
      margin-top:7px;
      border-radius:50%;
      background:linear-gradient(135deg, var(--accent), var(--accent-2));
      box-shadow:0 0 0 6px rgba(48,240,198,.08);
      flex:0 0 auto;
    }
    .update-item h4{
      margin:0 0 8px;
      font-size:1rem;
      line-height:1.45;
      font-weight:800;
    }
    .update-item h4 a{color:var(--text)}
    .update-item h4 a:hover{color:#d7fff6}
    .update-item p{
      margin:0;
      color:var(--muted);
      line-height:1.7;
      font-size:.93rem;
    }
    .update-meta{
      display:flex;
      flex-direction:column;
      align-items:flex-end;
      gap:8px;
      min-width:92px;
      text-align:right;
    }
    .update-meta .tag{padding:6px 9px;font-size:.72rem}
    .update-meta time{
      color:var(--soft);
      font-size:.82rem;
      line-height:1.5;
    }
    .latest-side{
      position:sticky;
      top:92px;
      padding:18px;
    }
    .info-list{
      display:grid;
      gap:10px;
      margin-top:14px;
    }
    .info-row{
      display:flex;
      gap:10px;
      align-items:flex-start;
      padding:12px 0;
      border-top:1px solid var(--line);
      color:var(--muted);
      line-height:1.7;
      font-size:.92rem;
    }
    .info-row:first-child{border-top:0;padding-top:0}
    .info-dot{
      width:9px;height:9px;
      border-radius:50%;
      background:var(--accent);
      margin-top:9px;
      flex:0 0 auto;
    }
    .accordion-shell{
      padding:0 26px 26px;
    }
    .faq-accordion{
      display:grid;
      gap:12px;
    }
    .accordion-item{
      border:1px solid var(--line) !important;
      border-radius:16px !important;
      overflow:hidden;
      background:rgba(255,255,255,.03);
      box-shadow:none;
    }
    .accordion-button{
      background:rgba(255,255,255,.02) !important;
      color:var(--text) !important;
      border:0 !important;
      padding:18px 20px;
      font-weight:800;
      box-shadow:none !important;
    }
    .accordion-button::after{
      filter: invert(1) brightness(1.6);
      opacity:.82;
    }
    .accordion-button:not(.collapsed){
      color:var(--text) !important;
      background:linear-gradient(135deg, rgba(48,240,198,.08), rgba(255,255,255,.02)) !important;
    }
    .accordion-body{
      padding:0 20px 18px;
      color:var(--muted);
      line-height:1.8;
      background:rgba(255,255,255,.01);
    }
    .form-grid{
      display:grid;
      grid-template-columns: .95fr 1.05fr;
      gap:16px;
      padding:0 26px 26px;
    }
    .form-card{
      padding:22px;
    }
    .form-card .helper{
      color:var(--muted);
      line-height:1.8;
      font-size:.95rem;
      margin:0;
    }
    .check-list{
      list-style:none;
      padding:0;
      margin:18px 0 0;
      display:grid;
      gap:10px;
    }
    .check-list li{
      position:relative;
      padding-left:28px;
      color:#d8e4ef;
      line-height:1.8;
      font-size:.94rem;
    }
    .check-list li::before{
      content:"";
      position:absolute;
      left:0;
      top:.5em;
      width:14px;height:14px;
      border-radius:50%;
      background:rgba(48,240,198,.12);
      border:1px solid rgba(48,240,198,.28);
      box-shadow: inset 0 0 0 4px rgba(48,240,198,.15);
    }
    .form-shell{
      border-radius:18px;
      padding:20px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.025);
    }
    .form-label{
      color:#d7e5f1;
      font-size:.92rem;
      font-weight:700;
      margin-bottom:8px;
    }
    .form-control,
    .form-select{
      background:rgba(8,14,21,.82) !important;
      border:1px solid rgba(223,231,241,.12) !important;
      color:var(--text) !important;
      border-radius:14px !important;
      padding:12px 14px;
      box-shadow:none !important;
      transition:var(--transition);
    }
    .form-control::placeholder{color:#74889a}
    .form-control:focus,
    .form-select:focus{
      background:rgba(8,14,21,.94) !important;
      border-color:rgba(48,240,198,.34) !important;
      box-shadow:0 0 0 .25rem rgba(48,240,198,.12) !important;
    }
    .form-help{
      color:var(--soft);
      font-size:.85rem;
      line-height:1.6;
      margin-top:8px;
    }
    .form-note{
      font-size:.84rem;
      color:var(--soft);
      line-height:1.7;
      margin-top:14px;
    }
    .floating-cta{
      position:fixed;
      left:50%;
      transform:translateX(-50%);
      bottom:18px;
      z-index:30;
      width:min(1120px, calc(100vw - 24px));
      border:1px solid rgba(48,240,198,.18);
      border-radius:18px;
      background:linear-gradient(180deg, rgba(9,16,23,.92), rgba(8,13,19,.86));
      box-shadow:0 18px 42px rgba(0,0,0,.32);
      backdrop-filter: blur(16px);
      overflow:hidden;
    }
    .floating-cta .inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:14px 18px;
    }
    .floating-cta p{
      margin:0;
      color:#d6e3ee;
      line-height:1.65;
      font-size:.93rem;
    }
    .footer{
      margin-top:30px;
      padding:24px 0 18px;
    }
    .footer-shell{
      border-top:1px solid var(--line);
      padding:22px 26px 16px;
      color:var(--muted);
    }
    .footer-top{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
    }
    .footer-brand{
      max-width:520px;
    }
    .footer-brand strong{
      display:block;
      color:var(--text);
      font-size:1.02rem;
      margin-bottom:8px;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
    }
    .footer-links a{
      color:var(--muted);
      padding:8px 10px;
      border-radius:999px;
      border:1px solid transparent;
    }
    .footer-links a:hover{
      color:var(--text);
      border-color:var(--line);
      background:rgba(255,255,255,.03);
    }
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
      margin-top:18px;
      padding-top:18px;
      border-top:1px solid var(--line);
      font-size:.88rem;
    }
    .backtop{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#d8fff7;
      font-weight:700;
    }
    .backtop:hover span{transform:translateY(-1px)}
    .mobile-only{display:none}
    .desktop-only{display:block}
    .offcanvas{
      background:linear-gradient(180deg, rgba(11,18,26,.99), rgba(8,13,19,.98));
      color:var(--text);
      border-right:1px solid var(--line);
    }
    .offcanvas .btn-close{
      filter:invert(1) grayscale(1) brightness(1.4);
      opacity:.86;
      box-shadow:none;
    }
    .offcanvas .offcanvas-body{
      display:flex;
      flex-direction:column;
      gap:16px;
    }
    .offcanvas .sidebar-nav a{padding:14px 14px}
    .offcanvas .sidebar-panel{margin-top:12px}
    .small-muted{color:var(--soft)}
    .inline-sep{
      height:1px;
      background:var(--line);
      margin:18px 0;
    }
    .subtle-card{
      border:1px solid var(--line);
      border-radius:16px;
      background:rgba(255,255,255,.025);
      padding:16px;
    }
    @media (max-width: 1199.98px){
      .hero-grid,
      .latest-grid,
      .form-grid{
        grid-template-columns:1fr;
      }
      .latest-side{position:static}
      .kpi-row{grid-template-columns:repeat(2, minmax(0, 1fr))}
      .feedback-grid{grid-template-columns:1fr}
    }
    @media (max-width: 991.98px){
      .sidebar{display:none}
      .topbar{display:flex}
      .main-content{
        margin-left:0;
        padding:14px 14px 0;
      }
      .hero-shell,
      .section-shell,
      .footer-shell{
        border-radius:18px;
      }
      .hero-copy{min-height:auto}
      .hero-visual{min-height:420px}
      .dp-cover{min-height:420px}
      .hero h1{max-width:100%}
      .compare-grid{grid-template-columns:1fr}
      .matrix-a,.matrix-b,.matrix-c,.matrix-d,.matrix-e,.matrix-f{grid-column:span 12}
      .mobile-only{display:block}
      .desktop-only{display:none}
      .floating-cta{
        width:calc(100vw - 18px);
        bottom:10px;
      }
      .floating-cta .inner{
        flex-direction:column;
        align-items:stretch;
      }
      .floating-cta .actions{
        display:flex;
        gap:10px;
        flex-wrap:wrap;
      }
    }
    @media (max-width: 767.98px){
      body{padding-bottom:182px}
      .hero-shell{padding:18px}
      .hero-copy{gap:18px}
      .hero-top{padding-right:0}
      .cover-stage{
        grid-template-columns:1fr;
        inset:84px 14px 14px;
      }
      .cover-stack{
        transform:none;
        flex-direction:row;
      }
      .stack-card{min-height:150px}
      .kpi-row{grid-template-columns:1fr}
      .section-head,
      .latest-wrap,
      .accordion-shell,
      .form-grid,
      .feedback-grid{
        padding-left:14px;
        padding-right:14px;
        padding-bottom:14px;
      }
      .hero h1{font-size:clamp(1.8rem, 1.15rem + 3vw, 2.6rem)}
      .hero-lead{font-size:.98rem}
      .section-note{font-size:.96rem}
      .update-item{
        grid-template-columns: 1fr;
      }
      .update-meta{
        flex-direction:row;
        justify-content:space-between;
        align-items:center;
        text-align:left;
        min-width:0;
      }
      .floating-cta{
        border-radius:16px;
      }
      .floating-cta .inner{
        padding:12px 14px;
      }
    }
    @media (max-width: 575.98px){
      .topbar{padding:0 12px}
      .mobile-brand h1{font-size:.98rem}
      .mobile-brand p{font-size:.78rem}
      .hero-shell,
      .section-shell,
      .footer-shell{border-radius:16px}
      .cover-panel{inset:14px}
      .cover-focus h3{font-size:1.3rem}
      .stack-card{padding:12px}
      .btn-brand, .btn-ghost, .btn-soft{width:100%}
      .hero-actions{display:grid;grid-template-columns:1fr}
      .hero-meta{gap:8px}
      .meta-chip{width:100%;text-align:center}
      .sidebar-nav a{font-size:.98rem}
      .check-list li{font-size:.92rem}
    }

/* roulang page: article */
:root{
      --bg:#060b10;
      --bg-2:#0a121a;
      --bg-3:#101a25;
      --panel:rgba(15,22,31,.92);
      --panel-2:rgba(18,28,39,.88);
      --line:rgba(223,232,242,.08);
      --line-2:rgba(48,240,198,.14);
      --text:#eef5fb;
      --muted:#a2b3c4;
      --soft:#7f93a8;
      --accent:#30f0c6;
      --accent-2:#8c7bff;
      --accent-3:#dfe7f1;
      --warning:#f6c56d;
      --shadow:0 18px 50px rgba(0,0,0,.38);
      --shadow-soft:0 10px 30px rgba(0,0,0,.22);
      --radius-lg:18px;
      --radius-md:14px;
      --radius-sm:10px;
      --sidebar-w:292px;
      --topbar-h:68px;
      --transition:.24s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      color:var(--text);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
      background:
        radial-gradient(1000px 700px at 20% 0%, rgba(48,240,198,.12), transparent 54%),
        radial-gradient(900px 700px at 100% 18%, rgba(140,123,255,.11), transparent 45%),
        linear-gradient(180deg, #05080d 0%, #081017 42%, #060b10 100%);
      overflow-x:hidden;
      padding-bottom:30px;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
      background-size:34px 34px;
      opacity:.12;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.75), transparent 92%);
      z-index:0;
    }
    body::after{
      content:"";
      position:fixed;
      inset:auto -8% -140px -8%;
      height:380px;
      pointer-events:none;
      background:radial-gradient(circle at 50% 45%, rgba(48,240,198,.12), transparent 42%);
      filter:blur(20px);
      z-index:0;
    }
    ::selection{background:rgba(48,240,198,.24);color:var(--text)}
    a{color:inherit;text-decoration:none;transition:var(--transition)}
    a:hover{color:var(--text)}
    img{max-width:100%;height:auto;display:block}
    button,input,select,textarea{font:inherit}
    :focus-visible{outline:2px solid rgba(48,240,198,.9);outline-offset:2px}
    .sidebar-shell{
      position:fixed;
      left:16px;
      top:16px;
      bottom:16px;
      width:var(--sidebar-w);
      padding:16px;
      border:1px solid var(--line);
      border-radius:22px;
      background:linear-gradient(180deg, rgba(12,18,26,.94), rgba(8,13,19,.92));
      box-shadow:var(--shadow);
      backdrop-filter:blur(14px);
      z-index:20;
      overflow:auto;
    }
    .sidebar-shell::-webkit-scrollbar,
    .offcanvas-body::-webkit-scrollbar,
    .content-shell::-webkit-scrollbar{width:8px}
    .sidebar-shell::-webkit-scrollbar-thumb,
    .offcanvas-body::-webkit-scrollbar-thumb,
    .content-shell::-webkit-scrollbar-thumb{
      background:rgba(255,255,255,.14);
      border-radius:999px;
    }
    .brand-shell{
      display:flex;
      align-items:center;
      gap:12px;
      padding:12px 12px 14px;
      border:1px solid var(--line);
      border-radius:18px;
      background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
      box-shadow:var(--shadow-soft);
    }
    .brand-mark{
      width:44px;
      height:44px;
      border-radius:14px;
      background:linear-gradient(135deg, rgba(48,240,198,.98), rgba(140,123,255,.92));
      display:grid;
      place-items:center;
      color:#061019;
      font-weight:900;
      letter-spacing:.06em;
      box-shadow:0 10px 24px rgba(48,240,198,.18);
      flex:0 0 auto;
    }
    .brand-copy{min-width:0}
    .brand-copy strong,
    .mobile-brand strong{
      display:block;
      font-size:1.02rem;
      line-height:1.2;
      font-weight:800;
      letter-spacing:.02em;
      color:var(--text);
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-copy span,
    .mobile-brand span{
      display:block;
      margin-top:3px;
      color:var(--muted);
      font-size:.84rem;
      line-height:1.42;
    }
    .sidebar-block{margin-top:16px}
    .sidebar-tag{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:6px 10px;
      border-radius:999px;
      border:1px solid rgba(48,240,198,.18);
      background:rgba(48,240,198,.08);
      color:#bff8ec;
      font-size:.75rem;
      font-weight:700;
      letter-spacing:.04em;
    }
    .sidebar-mini{
      margin-top:12px;
      padding:14px;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015));
    }
    .sidebar-mini p{
      margin:0;
      color:var(--muted);
      font-size:.92rem;
      line-height:1.75;
    }
    .sidebar-nav{
      display:flex;
      flex-direction:column;
      gap:8px;
      padding:2px 0;
    }
    .sidebar-nav a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:13px 14px;
      border:1px solid transparent;
      border-radius:14px;
      color:var(--muted);
      background:transparent;
      font-weight:650;
      letter-spacing:.01em;
    }
    .sidebar-nav a:hover,
    .sidebar-nav a:focus-visible{
      background:rgba(255,255,255,.03);
      border-color:var(--line);
      color:var(--text);
      transform:translateX(2px);
    }
    .sidebar-nav a.active{
      background:linear-gradient(135deg, rgba(48,240,198,.14), rgba(140,123,255,.10));
      color:var(--text);
      border-color:rgba(48,240,198,.22);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
    }
    .nav-pill{
      font-size:.72rem;
      color:var(--soft);
      background:rgba(255,255,255,.04);
      border:1px solid var(--line);
      border-radius:999px;
      padding:2px 8px;
      flex:0 0 auto;
    }
    .topbar{
      position:fixed;
      top:0;
      left:0;
      right:0;
      z-index:30;
      display:none;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      height:var(--topbar-h);
      padding:0 14px;
      border-bottom:1px solid var(--line);
      background:rgba(8,15,22,.86);
      backdrop-filter:blur(14px);
    }
    .mobile-brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .mobile-brand .brand-mark{width:40px;height:40px;border-radius:13px}
    .menu-toggle{
      width:44px;
      height:44px;
      border-radius:14px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.03);
      color:var(--text);
      display:inline-grid;
      place-items:center;
      transition:var(--transition);
      cursor:pointer;
    }
    .menu-toggle:hover{
      background:rgba(255,255,255,.07);
      border-color:rgba(48,240,198,.22);
      transform:translateY(-1px);
    }
    .menu-toggle:active{transform:translateY(0)}
    .menu-toggle svg{width:20px;height:20px}
    .offcanvas.offcanvas-dark{
      background:linear-gradient(180deg, rgba(10,16,24,.98), rgba(7,11,16,.98));
      color:var(--text);
      border-right:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .offcanvas-dark .offcanvas-header{
      border-bottom:1px solid var(--line);
      padding:16px;
    }
    .offcanvas-dark .offcanvas-body{padding:16px}
    .offcanvas-dark .btn-close{
      filter:invert(1) grayscale(100%);
      opacity:.82;
      box-shadow:none;
    }
    .content-shell{
      position:relative;
      z-index:1;
      margin-left:calc(var(--sidebar-w) + 32px);
      padding:18px 18px 0;
      min-height:100vh;
    }
    .page-wrap{
      max-width:1380px;
      margin:0 auto;
      display:flex;
      flex-direction:column;
      gap:18px;
    }
    .summary-panel,
    .article-card,
    .rail-card,
    .latest-panel,
    .empty-card,
    .site-footer{
      border:1px solid var(--line);
      background:linear-gradient(180deg, rgba(15,22,31,.92), rgba(10,16,24,.90));
      box-shadow:var(--shadow);
      border-radius:var(--radius-lg);
    }
    .summary-panel{
      display:grid;
      grid-template-columns:minmax(0,1.25fr) minmax(320px,.82fr);
      gap:18px;
      padding:22px;
      overflow:hidden;
      position:relative;
    }
    .summary-panel::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(600px 260px at 18% 0%, rgba(48,240,198,.08), transparent 60%),
        radial-gradient(480px 240px at 92% 8%, rgba(140,123,255,.10), transparent 58%);
      pointer-events:none;
    }
    .summary-copy,
    .tdk-card{position:relative;z-index:1}
    .eyebrow,
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:6px 10px;
      border-radius:999px;
      border:1px solid rgba(48,240,198,.18);
      background:rgba(48,240,198,.08);
      color:#bff8ec;
      font-size:.76rem;
      font-weight:700;
      letter-spacing:.04em;
    }
    .crumbs{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      margin-top:14px;
      color:var(--soft);
      font-size:.88rem;
    }
    .crumbs a{
      color:var(--muted);
      border-bottom:1px solid transparent;
    }
    .crumbs a:hover{
      color:var(--text);
      border-bottom-color:rgba(48,240,198,.3);
    }
    .crumbs .current{
      color:var(--text);
      max-width:100%;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .summary-copy h1,
    .empty-card h1{
      margin:14px 0 0;
      font-size:clamp(1.7rem, 3vw, 2.9rem);
      line-height:1.22;
      font-weight:900;
      letter-spacing:-.02em;
      color:var(--text);
      position:relative;
    }
    .summary-text{
      margin:14px 0 0;
      color:var(--muted);
      font-size:1rem;
      line-height:1.9;
      max-width:62ch;
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .meta-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:18px;
    }
    .chip,
    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 11px;
      border-radius:999px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.03);
      color:var(--accent-3);
      font-size:.82rem;
      line-height:1;
    }
    .badge-soft{
      color:#d7fef5;
      background:rgba(48,240,198,.08);
      border-color:rgba(48,240,198,.18);
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:18px;
    }
    .btn-brand,
    .btn-ghost,
    .btn-soft{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:11px 16px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:800;
      letter-spacing:.01em;
      transition:var(--transition);
      text-decoration:none !important;
      box-shadow:none;
      cursor:pointer;
    }
    .btn-brand{
      background:linear-gradient(135deg, var(--accent), #52f6d0);
      color:#07121b;
      box-shadow:0 12px 26px rgba(48,240,198,.18);
    }
    .btn-brand:hover{
      color:#07121b;
      transform:translateY(-2px);
      box-shadow:0 16px 34px rgba(48,240,198,.24);
    }
    .btn-brand:active{transform:translateY(0)}
    .btn-ghost{
      color:var(--text);
      background:rgba(255,255,255,.03);
      border-color:var(--line);
    }
    .btn-ghost:hover{
      color:var(--text);
      background:rgba(255,255,255,.06);
      border-color:rgba(48,240,198,.22);
      transform:translateY(-1px);
    }
    .btn-soft{
      color:var(--text);
      background:rgba(140,123,255,.10);
      border-color:rgba(140,123,255,.20);
    }
    .btn-soft:hover{
      color:var(--text);
      background:rgba(140,123,255,.16);
      border-color:rgba(140,123,255,.24);
      transform:translateY(-1px);
    }
    .tdk-card{
      padding:18px;
      border-radius:var(--radius-lg);
      border:1px solid rgba(48,240,198,.15);
      background:
        linear-gradient(180deg, rgba(10,18,27,.96), rgba(8,13,19,.94));
      box-shadow:inset 0 1px 0 rgba(255,255,255,.02), var(--shadow-soft);
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .tdk-head{
      display:inline-flex;
      align-items:center;
      width:max-content;
      padding:6px 10px;
      border-radius:999px;
      font-size:.76rem;
      font-weight:800;
      letter-spacing:.04em;
      color:#d7fef5;
      background:rgba(48,240,198,.10);
      border:1px solid rgba(48,240,198,.18);
    }
    .tdk-row{
      display:grid;
      grid-template-columns:64px minmax(0,1fr);
      gap:10px;
      align-items:start;
      padding:12px 0;
      border-top:1px solid var(--line);
    }
    .tdk-row:first-of-type{border-top:0;padding-top:0}
    .tdk-row span{
      color:var(--soft);
      font-size:.82rem;
      line-height:1.4;
    }
    .tdk-row strong{
      color:var(--text);
      font-size:.92rem;
      font-weight:650;
      line-height:1.65;
      word-break:break-word;
    }
    .article-grid{
      display:grid;
      grid-template-columns:minmax(0,1.25fr) minmax(290px,.75fr);
      gap:18px;
      align-items:start;
    }
    .article-card{
      padding:22px;
      overflow:hidden;
    }
    .article-topline{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      margin-bottom:16px;
      padding-bottom:14px;
      border-bottom:1px solid var(--line);
    }
    .article-meta{
      color:var(--soft);
      font-size:.86rem;
    }
    .article-body{
      color:var(--accent-3);
      font-size:1rem;
      line-height:1.88;
      letter-spacing:.01em;
      overflow:hidden;
    }
    .article-body > * + *{margin-top:1rem}
    .article-body h2,
    .article-body h3,
    .article-body h4{
      margin:1.8rem 0 .8rem;
      line-height:1.35;
      color:var(--text);
      letter-spacing:-.01em;
      font-weight:800;
    }
    .article-body h2{font-size:1.42rem}
    .article-body h3{font-size:1.15rem}
    .article-body p{
      margin:0;
      color:#d9e3ec;
    }
    .article-body ul,
    .article-body ol{
      margin:0;
      padding-left:1.15rem;
      color:#d9e3ec;
    }
    .article-body li + li{margin-top:.55rem}
    .article-body blockquote{
      margin:1.4rem 0;
      padding:16px 18px;
      border-left:4px solid var(--accent);
      background:rgba(48,240,198,.06);
      border-radius:12px;
      color:#e7fef8;
    }
    .article-body hr{
      margin:1.6rem 0;
      border:0;
      height:1px;
      background:var(--line);
      opacity:1;
    }
    .article-body figure{
      margin:1.4rem 0;
      padding:12px;
      border:1px solid var(--line);
      border-radius:16px;
      background:rgba(255,255,255,.02);
    }
    .article-body figure img,
    .article-body img{
      width:100%;
      border-radius:12px;
      object-fit:cover;
      border:1px solid rgba(255,255,255,.05);
      background:#0a0f14;
    }
    .article-body figcaption{
      margin-top:10px;
      color:var(--soft);
      font-size:.86rem;
      line-height:1.6;
    }
    .article-body a{
      color:#9ff7e6;
      border-bottom:1px solid rgba(48,240,198,.28);
    }
    .article-body a:hover{
      color:#ffffff;
      border-bottom-color:rgba(255,255,255,.4);
    }
    .article-body code{
      padding:.16rem .38rem;
      border-radius:8px;
      background:rgba(255,255,255,.06);
      color:#cfe9ff;
      font-size:.92em;
    }
    .article-body pre{
      margin:1.4rem 0;
      padding:16px 18px;
      border-radius:16px;
      border:1px solid var(--line);
      background:#091019;
      color:#d8e6f1;
      overflow:auto;
      line-height:1.7;
    }
    .article-body table{
      width:100%;
      margin:1.2rem 0;
      border-collapse:collapse;
      border:1px solid var(--line);
      border-radius:14px;
      overflow:hidden;
      display:block;
      overflow-x:auto;
      background:rgba(255,255,255,.02);
    }
    .article-body th,
    .article-body td{
      padding:12px 14px;
      border-bottom:1px solid var(--line);
      text-align:left;
      white-space:nowrap;
    }
    .article-body th{
      color:var(--text);
      background:rgba(255,255,255,.03);
      font-weight:750;
    }
    .article-body td{color:#d9e3ec}
    .article-end{
      margin-top:20px;
      padding-top:18px;
      border-top:1px solid var(--line);
    }
    .info-note{
      color:var(--muted);
      font-size:.92rem;
      line-height:1.75;
    }
    .rail{
      display:flex;
      flex-direction:column;
      gap:18px;
    }
    .rail-card{
      padding:18px;
    }
    .rail-card.subtle{
      background:linear-gradient(180deg, rgba(18,28,39,.82), rgba(10,16,24,.86));
    }
    .section-title{
      margin:10px 0 0;
      font-size:1.15rem;
      line-height:1.42;
      font-weight:850;
      color:var(--text);
    }
    .data-list{
      list-style:none;
      padding:0;
      margin:14px 0 0;
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .data-list li{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:18px;
      padding:11px 0;
      border-top:1px solid var(--line);
    }
    .data-list li:first-child{border-top:0;padding-top:0}
    .data-list span{
      color:var(--soft);
      font-size:.86rem;
      line-height:1.5;
      flex:0 0 auto;
    }
    .data-list strong{
      color:var(--text);
      text-align:right;
      font-size:.92rem;
      line-height:1.55;
      font-weight:700;
      word-break:break-word;
    }
    .stack-links{
      display:flex;
      flex-direction:column;
      gap:10px;
      margin-top:14px;
    }
    .rail-link{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:12px 14px;
      border-radius:14px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.02);
      color:var(--muted);
      font-weight:650;
      line-height:1.55;
    }
    .rail-link:hover{
      color:var(--text);
      border-color:rgba(48,240,198,.18);
      background:rgba(48,240,198,.05);
      transform:translateX(2px);
    }
    .rail-card p{
      margin:12px 0 0;
      color:var(--muted);
      font-size:.92rem;
      line-height:1.8;
    }
    .latest-panel{
      padding:20px;
    }
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:14px;
      margin-bottom:16px;
    }
    .text-link{
      color:var(--accent);
      font-weight:700;
      border-bottom:1px solid transparent;
    }
    .text-link:hover{
      color:#bafbf0;
      border-bottom-color:rgba(48,240,198,.28);
    }
    .latest-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0, 1fr));
      gap:14px;
    }
    .mini-card{
      display:block;
      padding:16px;
      border-radius:16px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.02);
      transition:var(--transition);
      min-height:100%;
    }
    .mini-card:hover{
      transform:translateY(-2px);
      border-color:rgba(48,240,198,.18);
      background:rgba(48,240,198,.04);
      box-shadow:0 16px 28px rgba(0,0,0,.2);
    }
    .mini-tag{
      display:inline-flex;
      align-items:center;
      padding:5px 9px;
      border-radius:999px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.03);
      color:var(--soft);
      font-size:.74rem;
      font-weight:700;
      letter-spacing:.04em;
    }
    .mini-card strong{
      display:block;
      margin-top:10px;
      color:var(--text);
      font-size:1rem;
      line-height:1.4;
      font-weight:800;
    }
    .mini-card p{
      margin:8px 0 0;
      color:var(--muted);
      font-size:.92rem;
      line-height:1.7;
    }
    .empty-shell{
      display:grid;
      place-items:center;
      min-height:52vh;
      padding:24px 0;
    }
    .empty-card{
      width:min(700px,100%);
      padding:28px;
      text-align:left;
    }
    .empty-card p{
      margin:14px 0 0;
      color:var(--muted);
      font-size:1rem;
      line-height:1.9;
      max-width:62ch;
    }
    .site-footer{
      padding:18px 20px;
      margin-top:8px;
    }
    .footer-top{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:16px;
      padding-bottom:14px;
      border-bottom:1px solid var(--line);
    }
    .footer-brand{
      color:var(--text);
      font-size:1rem;
      font-weight:850;
      letter-spacing:.02em;
    }
    .footer-note{
      margin:8px 0 0;
      color:var(--muted);
      font-size:.9rem;
      line-height:1.7;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      justify-content:flex-end;
      gap:10px;
    }
    .footer-links a{
      padding:9px 12px;
      border-radius:999px;
      border:1px solid var(--line);
      color:var(--muted);
      background:rgba(255,255,255,.02);
      font-size:.88rem;
      font-weight:650;
    }
    .footer-links a:hover{
      color:var(--text);
      border-color:rgba(48,240,198,.18);
      background:rgba(48,240,198,.05);
    }
    .footer-bottom{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      padding-top:14px;
      color:var(--soft);
      font-size:.84rem;
      line-height:1.6;
    }
    @media (max-width: 1199.98px){
      .summary-panel{grid-template-columns:1fr}
      .tdk-card{order:2}
      .latest-grid{grid-template-columns:repeat(2, minmax(0, 1fr))}
    }
    @media (max-width: 991.98px){
      .sidebar-shell{display:none}
      .topbar{display:flex}
      .content-shell{
        margin-left:0;
        padding:84px 14px 0;
      }
      .article-grid{grid-template-columns:1fr}
    }
    @media (max-width: 767.98px){
      .summary-panel,
      .article-card,
      .rail-card,
      .latest-panel,
      .empty-card,
      .site-footer{border-radius:16px}
      .summary-panel,
      .article-card,
      .latest-panel{padding:16px}
      .rail-card{padding:16px}
      .site-footer{padding:16px}
      .latest-grid{grid-template-columns:1fr}
      .section-head,
      .footer-top,
      .footer-bottom{flex-direction:column;align-items:flex-start}
      .footer-links{justify-content:flex-start}
      .hero-actions .btn-brand,
      .hero-actions .btn-ghost,
      .hero-actions .btn-soft{width:100%}
      .data-list li{gap:12px}
    }
    @media (max-width: 575.98px){
      .content-shell{padding-left:12px;padding-right:12px}
      .summary-copy h1,
      .empty-card h1{font-size:1.52rem}
      .summary-text,
      .article-body,
      .rail-card p{font-size:.96rem}
      .tdk-row{grid-template-columns:52px 1fr}
      .brand-copy strong,
      .mobile-brand strong{max-width:220px}
    }
    @media (prefers-reduced-motion: reduce){
      html{scroll-behavior:auto}
      *,
      *::before,
      *::after{
        animation:none !important;
        transition:none !important;
      }
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}