/* roulang page: index */
:root{
      --bg: #090d16;
      --bg-soft: #0f1522;
      --panel: rgba(18, 24, 38, .88);
      --panel-2: rgba(24, 31, 49, .88);
      --line: rgba(171, 192, 255, .14);
      --line-strong: rgba(171, 192, 255, .22);
      --text: #eef3ff;
      --muted: #a8b3ce;
      --muted-2: #7f8aa8;
      --accent: #6fe3ff;
      --accent-2: #c48cff;
      --accent-3: #7af0c7;
      --danger: #ff8fb3;
      --shadow: 0 24px 70px rgba(0,0,0,.38);
      --shadow-soft: 0 16px 40px rgba(0,0,0,.22);
      --radius: 18px;
      --radius-lg: 24px;
      --radius-xl: 30px;
      --container: 1180px;
      --space: clamp(18px, 2.6vw, 28px);
      --gap: 18px;
      --transition: 180ms ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      color:var(--text);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
      background:
        radial-gradient(1200px 650px at 15% -8%, rgba(111,227,255,.14), transparent 58%),
        radial-gradient(900px 520px at 85% 10%, rgba(196,140,255,.12), transparent 54%),
        radial-gradient(900px 640px at 50% 115%, rgba(122,240,199,.08), transparent 52%),
        linear-gradient(180deg, #070b12 0%, #0a0f18 100%);
      line-height:1.8;
      overflow-x:hidden;
    }

    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: 28px 28px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.55), rgba(0,0,0,.16));
      opacity:.35;
      z-index:-1;
    }

    body::after{
      content:"";
      position:fixed;
      inset:-20%;
      pointer-events:none;
      background:
        radial-gradient(circle at 20% 20%, rgba(111,227,255,.06), transparent 22%),
        radial-gradient(circle at 80% 28%, rgba(196,140,255,.07), transparent 20%),
        radial-gradient(circle at 50% 80%, rgba(122,240,199,.05), transparent 18%);
      filter: blur(20px);
      z-index:-1;
    }

    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(111,227,255,.24);color:var(--text)}
    :focus-visible{
      outline:2px solid rgba(111,227,255,.95);
      outline-offset:3px;
      border-radius:10px;
    }

    .sr-only{
      position:absolute;
      width:1px;
      height:1px;
      padding:0;
      margin:-1px;
      overflow:hidden;
      clip:rect(0,0,0,0);
      white-space:nowrap;
      border:0;
    }

    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:60;
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      background: rgba(8, 12, 20, .76);
      border-bottom:1px solid rgba(171,192,255,.12);
      box-shadow: 0 1px 0 rgba(255,255,255,.02) inset;
    }

    .nav-shell{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      min-height:74px;
    }

    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
    }

    .brand-mark{
      display:grid;
      place-items:center;
      width:40px;
      height:40px;
      border-radius:14px;
      color:#07101a;
      font-size:.92rem;
      font-weight:900;
      letter-spacing:.08em;
      background:
        linear-gradient(135deg, var(--accent) 0%, var(--accent-3) 50%, #f5fbff 100%);
      box-shadow:
        0 10px 30px rgba(111,227,255,.22),
        0 0 0 1px rgba(255,255,255,.18) inset;
    }

    .brand-text{
      display:flex;
      flex-direction:column;
      gap:2px;
      line-height:1.2;
    }

    .brand-text strong{
      font-size:1.02rem;
      letter-spacing:.01em;
      color:var(--text);
    }

    .brand-text small{
      font-size:.76rem;
      color:var(--muted);
    }

    .menu-toggle{
      display:none;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:11px 14px;
      border-radius:999px;
      color:var(--text);
      border:1px solid rgba(171,192,255,.18);
      background: linear-gradient(180deg, rgba(27,35,52,.92), rgba(16,21,33,.92));
      box-shadow: var(--shadow-soft);
      cursor:pointer;
      transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
    }

    .menu-toggle:hover{
      transform: translateY(-1px);
      border-color: rgba(111,227,255,.32);
      box-shadow: 0 16px 30px rgba(0,0,0,.22);
    }

    .menu-toggle:active{transform: translateY(0)}

    .site-nav{
      display:flex;
      align-items:center;
      gap:14px;
    }

    .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
      padding:6px;
      border-radius:999px;
      border:1px solid rgba(171,192,255,.12);
      background: rgba(255,255,255,.03);
    }

    .nav-links a{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:10px 16px;
      border-radius:999px;
      color:var(--muted);
      transition: transform var(--transition), background var(--transition), color var(--transition), box-shadow var(--transition);
    }

    .nav-links a:hover,
    .nav-links a:focus-visible{
      color:var(--text);
      background: rgba(255,255,255,.06);
      transform: translateY(-1px);
    }

    .nav-links a.active{
      color:#08111a;
      background: linear-gradient(135deg, rgba(111,227,255,.96), rgba(122,240,199,.88));
      box-shadow: 0 12px 28px rgba(111,227,255,.18);
    }

    .lang-switch{
      display:flex;
      align-items:center;
      gap:6px;
      padding:6px;
      border-radius:999px;
      border:1px solid rgba(171,192,255,.12);
      background: rgba(255,255,255,.03);
    }

    .lang-switch a{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:9px 12px;
      border-radius:999px;
      font-size:.9rem;
      color:var(--muted);
      transition: background var(--transition), color var(--transition), transform var(--transition);
    }

    .lang-switch a:hover,
    .lang-switch a:focus-visible{
      color:var(--text);
      background: rgba(255,255,255,.06);
      transform: translateY(-1px);
    }

    .lang-switch a.active{
      color:#08111a;
      background: linear-gradient(135deg, rgba(196,140,255,.96), rgba(111,227,255,.9));
      box-shadow: 0 10px 24px rgba(196,140,255,.16);
    }

    main{
      display:flex;
      flex-direction:column;
      gap:24px;
      padding:24px 0 48px;
    }

    .hero{
      padding: 10px 0 0;
    }

    .hero-shell{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(171,192,255,.14);
      border-radius: calc(var(--radius-xl) + 6px);
      background:
        linear-gradient(180deg, rgba(18,24,38,.94), rgba(10,14,23,.92));
      box-shadow: var(--shadow);
      padding: clamp(22px, 3.2vw, 34px);
    }

    .hero-shell::before{
      content:"";
      position:absolute;
      inset:auto -10% -34% auto;
      width:420px;
      height:420px;
      border-radius:50%;
      background: radial-gradient(circle, rgba(111,227,255,.14), transparent 65%);
      pointer-events:none;
      filter: blur(4px);
    }

    .hero-shell::after{
      content:"";
      position:absolute;
      inset:0;
      pointer-events:none;
      border-radius:inherit;
      background:
        linear-gradient(135deg, rgba(255,255,255,.05), transparent 18%),
        linear-gradient(320deg, rgba(255,255,255,.03), transparent 20%);
      mask-image: linear-gradient(180deg, rgba(0,0,0,.8), transparent 95%);
    }

    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns: 1.08fr .92fr;
      gap:24px;
      align-items:stretch;
      z-index:1;
    }

    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color: #cfe8ff;
      font-size:.82rem;
      letter-spacing:.08em;
      text-transform:none;
      border:1px solid rgba(111,227,255,.18);
      background: linear-gradient(180deg, rgba(111,227,255,.12), rgba(255,255,255,.03));
      box-shadow: 0 12px 24px rgba(0,0,0,.14);
    }

    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background: var(--accent);
      box-shadow: 0 0 0 4px rgba(111,227,255,.13);
    }

    .hero-copy{
      display:flex;
      flex-direction:column;
      justify-content:center;
      gap:18px;
      padding: 8px 0;
    }

    .hero-copy h1{
      margin:0;
      font-size: clamp(2.5rem, 5vw, 4.75rem);
      line-height:1.03;
      letter-spacing:-.03em;
      text-wrap:balance;
    }

    .hero-copy h1 span{
      display:inline-block;
      color:var(--accent);
      text-shadow: 0 0 24px rgba(111,227,255,.18);
    }

    .hero-copy p{
      margin:0;
      max-width: 58ch;
      color:var(--muted);
      font-size: 1.02rem;
      line-height: 1.9;
      text-wrap:pretty;
    }

    .hero-search{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
      padding: 14px;
      border-radius: 22px;
      border:1px solid rgba(171,192,255,.14);
      background: rgba(255,255,255,.03);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.03);
    }

    .hero-search input{
      flex:1 1 240px;
      min-width:0;
      height:52px;
      padding:0 16px;
      border:1px solid rgba(171,192,255,.12);
      border-radius:16px;
      color:var(--text);
      background: rgba(7, 10, 18, .72);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.02);
      transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
    }

    .hero-search input::placeholder{color:#8290af}
    .hero-search input:hover{border-color:rgba(111,227,255,.24)}
    .hero-search input:focus{
      outline:none;
      border-color:rgba(111,227,255,.52);
      box-shadow: 0 0 0 4px rgba(111,227,255,.08);
      background: rgba(9, 13, 21, .9);
    }

    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      align-items:center;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:48px;
      padding: 0 18px;
      border-radius: 14px;
      border:1px solid transparent;
      cursor:pointer;
      user-select:none;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition), color var(--transition);
      white-space:nowrap;
      font-weight:700;
      letter-spacing:.01em;
    }

    .btn:hover{
      transform: translateY(-2px);
    }

    .btn:active{
      transform: translateY(0);
    }

    .btn-primary{
      color:#061018;
      background: linear-gradient(135deg, var(--accent) 0%, var(--accent-3) 100%);
      box-shadow: 0 14px 28px rgba(111,227,255,.18);
      border-color: rgba(255,255,255,.12);
    }

    .btn-primary:hover{
      box-shadow: 0 18px 34px rgba(111,227,255,.22);
    }

    .btn-secondary{
      color:var(--text);
      border-color:rgba(171,192,255,.18);
      background: linear-gradient(180deg, rgba(24,31,49,.95), rgba(15,19,29,.92));
      box-shadow: var(--shadow-soft);
    }

    .btn-secondary:hover{
      border-color:rgba(111,227,255,.3);
      background: linear-gradient(180deg, rgba(29,37,58,.98), rgba(15,19,29,.96));
    }

    .hero-points{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }

    .chip,
    .badge{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      border:1px solid rgba(171,192,255,.14);
      color:#dbe6ff;
      background: rgba(255,255,255,.04);
      font-size:.86rem;
      line-height:1;
      box-shadow: inset 0 1px 0 rgba(255,255,255,.03);
    }

    .badge-accent{
      color:#051018;
      background: linear-gradient(135deg, rgba(111,227,255,.98), rgba(122,240,199,.9));
      border-color: rgba(255,255,255,.18);
      box-shadow: 0 12px 24px rgba(111,227,255,.18);
    }

    .panel{
      position:relative;
      border-radius: 26px;
      border:1px solid rgba(171,192,255,.14);
      background:
        linear-gradient(180deg, rgba(22,29,45,.92), rgba(13,17,27,.94));
      box-shadow: var(--shadow-soft);
      overflow:hidden;
    }

    .hero-visual{
      display:flex;
      flex-direction:column;
      gap:16px;
      padding:18px;
      min-height: 100%;
    }

    .visual-tabs{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      padding:8px;
      border-radius:18px;
      border:1px solid rgba(171,192,255,.12);
      background: rgba(255,255,255,.03);
    }

    .tab{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:9px 12px;
      border-radius:999px;
      color:var(--muted);
      font-size:.86rem;
      transition: background var(--transition), color var(--transition), transform var(--transition);
    }

    .tab:hover{
      transform: translateY(-1px);
      color:var(--text);
      background: rgba(255,255,255,.06);
    }

    .tab.active{
      color:#08111a;
      background: linear-gradient(135deg, rgba(111,227,255,.96), rgba(196,140,255,.9));
      box-shadow: 0 12px 22px rgba(196,140,255,.16);
    }

    .visual-stage{
      flex:1;
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap:14px;
      align-items:stretch;
    }

    .visual-spot,
    .mini-card,
    .result-card,
    .problem-card,
    .voice-card,
    .news-aside-card,
    .compare-card,
    .faq-item,
    .cta-side,
    .solution-card,
    .stat-card{
      border-radius: var(--radius);
      border:1px solid rgba(171,192,255,.12);
      background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.015));
      box-shadow: inset 0 1px 0 rgba(255,255,255,.03);
    }

    .visual-spot{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap:12px;
      padding:20px;
      min-height:280px;
      background:
        radial-gradient(circle at 20% 20%, rgba(111,227,255,.12), transparent 42%),
        radial-gradient(circle at 80% 0%, rgba(196,140,255,.12), transparent 36%),
        linear-gradient(180deg, rgba(22,29,45,.95), rgba(13,17,27,.92));
    }

    .visual-spot h3{
      margin:6px 0 0;
      font-size:1.34rem;
      line-height:1.35;
    }

    .visual-spot p{
      margin:0;
      color:var(--muted);
      line-height:1.75;
    }

    .visual-stack{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
    }

    .mini-card{
      padding:14px;
      min-height: 132px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap:8px;
      background:
        linear-gradient(180deg, rgba(18,24,38,.94), rgba(12,16,26,.94));
      transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    }

    .mini-card:hover{
      transform: translateY(-2px);
      border-color: rgba(111,227,255,.24);
      box-shadow: 0 18px 32px rgba(0,0,0,.22);
    }

    .mini-card span{
      color:var(--muted-2);
      font-size:.86rem;
    }

    .mini-card strong{
      font-size:1.02rem;
      line-height:1.45;
    }

    .visual-foot{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }

    .visual-foot span{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      border:1px solid rgba(171,192,255,.12);
      background: rgba(255,255,255,.035);
      color:#dbe5ff;
      font-size:.84rem;
    }

    .section{
      padding:0;
    }

    .section-shell{
      padding: clamp(22px, 3vw, 30px);
      border-radius: var(--radius-xl);
      border:1px solid rgba(171,192,255,.12);
      background: linear-gradient(180deg, rgba(17,23,36,.88), rgba(12,16,24,.9));
      box-shadow: var(--shadow-soft);
    }

    .section-head{
      display:flex;
      flex-direction:column;
      gap:10px;
      margin-bottom:20px;
    }

    .section-head h2{
      margin:0;
      font-size: clamp(1.5rem, 2.6vw, 2.1rem);
      line-height:1.18;
      letter-spacing:-.02em;
    }

    .section-head p{
      margin:0;
      max-width:72ch;
      color:var(--muted);
      line-height:1.9;
    }

    .problem-grid{
      display:grid;
      grid-template-columns:repeat(4, minmax(0, 1fr));
      gap:16px;
    }

    .problem-card,
    .stat-card,
    .voice-card,
    .news-aside-card,
    .compare-card,
    .faq-item,
    .cta-side{
      padding:20px;
    }

    .problem-card{
      min-height: 196px;
      transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    }

    .problem-card:hover{
      transform: translateY(-3px);
      border-color: rgba(111,227,255,.24);
      box-shadow: 0 20px 40px rgba(0,0,0,.2);
    }

    .card-index{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:34px;
      height:34px;
      border-radius:12px;
      color:#071018;
      font-weight:900;
      background: linear-gradient(135deg, var(--accent), var(--accent-3));
      box-shadow: 0 10px 20px rgba(111,227,255,.14);
      margin-bottom:16px;
    }

    .problem-card h3,
    .solution-card h3,
    .compare-card h3,
    .news-aside-card h3,
    .cta-side h3,
    .voice-card h3,
    .stat-card h3{
      margin:0 0 10px;
      font-size:1.08rem;
      line-height:1.42;
    }

    .problem-card p,
    .solution-card p,
    .compare-card p,
    .news-aside-card p,
    .cta-side p,
    .voice-card p,
    .stat-card p{
      margin:0;
      color:var(--muted);
      line-height:1.85;
    }

    .solution-layout,
    .result-layout,
    .news-layout,
    .cta-layout{
      display:grid;
      grid-template-columns: 1.05fr .95fr;
      gap:16px;
    }

    .solution-card,
    .compare-card{
      padding:20px;
    }

    .solution-flow{
      display:flex;
      flex-direction:column;
      gap:16px;
      min-height:100%;
    }

    .step-list{
      display:grid;
      gap:12px;
      margin:0;
      padding:0;
      list-style:none;
    }

    .step-list li{
      display:grid;
      grid-template-columns:auto 1fr;
      gap:10px 12px;
      padding:14px 14px;
      border-radius: 16px;
      border:1px solid rgba(171,192,255,.12);
      background: rgba(255,255,255,.025);
    }

    .step-bullet{
      width:30px;
      height:30px;
      border-radius:10px;
      display:grid;
      place-items:center;
      color:#08111a;
      font-weight:900;
      background: linear-gradient(135deg, rgba(196,140,255,.96), rgba(111,227,255,.94));
      box-shadow: 0 12px 20px rgba(196,140,255,.12);
    }

    .step-list strong{
      display:block;
      color:var(--text);
      margin-bottom:4px;
    }

    .step-list span{
      color:var(--muted);
      line-height:1.72;
    }

    .matrix{
      display:grid;
      grid-template-columns:repeat(2, minmax(0, 1fr));
      gap:12px;
    }

    .matrix-card{
      min-height:104px;
      padding:14px;
      border-radius:16px;
      border:1px solid rgba(171,192,255,.12);
      background:
        radial-gradient(circle at top right, rgba(111,227,255,.08), transparent 40%),
        rgba(255,255,255,.03);
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap:8px;
      transition: transform var(--transition), border-color var(--transition);
    }

    .matrix-card:hover{
      transform: translateY(-2px);
      border-color: rgba(111,227,255,.24);
    }

    .matrix-card span,
    .news-meta time,
    .voice-meta small,
    .stat-card span,
    .compare-row span{
      color:var(--muted-2);
      font-size:.88rem;
    }

    .matrix-card strong{
      font-size:1.02rem;
      line-height:1.45;
    }

    .matrix-card.wide{
      grid-column: 1 / -1;
      min-height:auto;
    }

    .stats-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0, 1fr));
      gap:16px;
    }

    .stat-card{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      min-height: 168px;
      transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    }

    .stat-card:hover{
      transform: translateY(-2px);
      border-color: rgba(111,227,255,.24);
      box-shadow: 0 18px 36px rgba(0,0,0,.18);
    }

    .stat-number{
      display:inline-flex;
      align-items:flex-end;
      gap:6px;
      margin-bottom:14px;
    }

    .stat-number strong{
      font-size:2.1rem;
      line-height:1;
      letter-spacing:-.03em;
      color:#eff7ff;
    }

    .stat-number em{
      font-style:normal;
      color:var(--accent);
      font-size:.96rem;
      padding-bottom:3px;
    }

    .compare-card{
      display:flex;
      flex-direction:column;
      gap:14px;
    }

    .compare-list{
      display:grid;
      gap:10px;
    }

    .compare-row{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:13px 14px;
      border-radius:14px;
      border:1px solid rgba(171,192,255,.12);
      background: rgba(255,255,255,.025);
    }

    .compare-row strong{
      color:#eff7ff;
      font-size:.96rem;
    }

    .compare-row.good{
      border-color: rgba(122,240,199,.18);
      background: linear-gradient(180deg, rgba(122,240,199,.08), rgba(255,255,255,.02));
    }

    .compare-row.good strong{
      color:#d8fff1;
    }

    .voices-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0, 1fr));
      gap:16px;
    }

    .voice-card{
      display:flex;
      flex-direction:column;
      gap:16px;
      min-height: 240px;
      transition: transform var(--transition), border-color var(--transition);
    }

    .voice-card:hover{
      transform: translateY(-2px);
      border-color: rgba(111,227,255,.24);
    }

    .quote-mark{
      font-size:2.2rem;
      line-height:1;
      color: rgba(111,227,255,.75);
      margin-bottom:-6px;
    }

    .voice-card p{
      flex:1;
      color:var(--text);
      line-height:1.9;
    }

    .voice-footer{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
      padding-top:2px;
    }

    .voice-meta{
      display:flex;
      align-items:center;
      gap:10px;
    }

    .avatar{
      width:40px;
      height:40px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#08111a;
      font-weight:900;
      background: linear-gradient(135deg, rgba(111,227,255,.96), rgba(196,140,255,.92));
      box-shadow: 0 12px 20px rgba(111,227,255,.14);
    }

    .voice-meta strong{
      display:block;
      font-size:.98rem;
      line-height:1.2;
    }

    .stars{
      color:#ffd46b;
      letter-spacing:2px;
      font-size:.88rem;
      white-space:nowrap;
    }

    .news-layout{
      align-items:start;
    }

    .news-list{
      display:grid;
      gap:14px;
    }

    .news-item{
      border-radius: 18px;
      border:1px solid rgba(171,192,255,.12);
      background:
        radial-gradient(circle at top right, rgba(111,227,255,.07), transparent 36%),
        rgba(255,255,255,.025);
      overflow:hidden;
      transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    }

    .news-item:hover{
      transform: translateY(-2px);
      border-color: rgba(111,227,255,.26);
      box-shadow: 0 18px 34px rgba(0,0,0,.18);
    }

    .news-link{
      display:flex;
      flex-direction:column;
      gap:12px;
      padding:18px;
      min-height: 168px;
    }

    .news-meta{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
    }

    .badge-soft{
      color:#d8e9ff;
      background: rgba(111,227,255,.08);
      border-color: rgba(111,227,255,.16);
    }

    .news-link h3{
      margin:0;
      font-size:1.1rem;
      line-height:1.5;
      letter-spacing:-.01em;
    }

    .news-link p{
      margin:0;
      color:var(--muted);
      line-height:1.82;
    }

    .link-more{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#dff8ff;
      font-weight:700;
      margin-top:auto;
    }

    .link-more::after{
      content:"→";
      transition: transform var(--transition);
    }

    .news-item:hover .link-more::after{
      transform: translateX(2px);
    }

    .news-empty{
      min-height: 100%;
      display:grid;
      place-items:center;
      padding:28px 18px;
      color:var(--muted);
      border-radius: 18px;
      border:1px dashed rgba(171,192,255,.18);
      background:
        radial-gradient(circle at center, rgba(111,227,255,.06), transparent 58%),
        rgba(255,255,255,.02);
      text-align:center;
    }

    .news-aside{
      display:grid;
      gap:14px;
    }

    .news-aside-card{
      min-height: 100%;
    }

    .mini-tips{
      display:grid;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
    }

    .mini-tips li{
      position:relative;
      padding:13px 14px 13px 34px;
      border-radius:14px;
      border:1px solid rgba(171,192,255,.12);
      background: rgba(255,255,255,.025);
      color:var(--text);
      line-height:1.7;
    }

    .mini-tips li::before{
      content:"";
      position:absolute;
      left:14px;
      top:18px;
      width:10px;
      height:10px;
      border-radius:50%;
      background: linear-gradient(135deg, var(--accent), var(--accent-3));
      box-shadow: 0 0 0 4px rgba(111,227,255,.1);
    }

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

    .faq-item{
      padding:0;
      overflow:hidden;
    }

    .faq-item summary{
      list-style:none;
      cursor:pointer;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:18px 20px;
      color:var(--text);
      font-weight:700;
      transition: background var(--transition), color var(--transition);
    }

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

    .faq-item summary:hover{
      background: rgba(255,255,255,.025);
    }

    .faq-item summary::after{
      content:"＋";
      flex:0 0 auto;
      color: var(--accent);
      font-size:1rem;
      transition: transform var(--transition), color var(--transition);
    }

    .faq-item[open] summary{
      border-bottom:1px solid rgba(171,192,255,.1);
      background: rgba(255,255,255,.025);
    }

    .faq-item[open] summary::after{
      content:"－";
      color: var(--accent-3);
    }

    .faq-item .faq-body{
      padding: 16px 20px 20px;
      color:var(--muted);
      line-height:1.9;
    }

    .cta-shell{
      position:relative;
      overflow:hidden;
    }

    .cta-shell::before{
      content:"";
      position:absolute;
      right:-5%;
      top:-18%;
      width:300px;
      height:300px;
      border-radius:50%;
      background: radial-gradient(circle, rgba(111,227,255,.14), transparent 60%);
      pointer-events:none;
    }

    .cta-layout{
      position:relative;
      align-items:stretch;
      z-index:1;
    }

    .cta-copy{
      display:flex;
      flex-direction:column;
      justify-content:center;
      gap:14px;
    }

    .cta-copy h2{
      margin:0;
      font-size: clamp(1.7rem, 3vw, 2.4rem);
      line-height:1.18;
      letter-spacing:-.02em;
    }

    .cta-copy p{
      margin:0;
      color:var(--muted);
      max-width: 62ch;
      line-height:1.9;
    }

    .cta-side{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap:14px;
      min-height:100%;
      background:
        radial-gradient(circle at top right, rgba(196,140,255,.08), transparent 36%),
        rgba(255,255,255,.025);
    }

    .cta-side .tag-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }

    .footer{
      padding: 0 0 34px;
    }

    .footer-shell{
      border-radius: 28px;
      border:1px solid rgba(171,192,255,.12);
      background:
        linear-gradient(180deg, rgba(14,18,29,.92), rgba(9,12,18,.95));
      box-shadow: var(--shadow-soft);
      padding: 24px;
    }

    .footer-grid{
      display:grid;
      grid-template-columns: 1.2fr .8fr;
      gap:20px;
      align-items:start;
    }

    .footer-brand{
      display:flex;
      flex-direction:column;
      gap:12px;
    }

    .footer-brand .brand{
      margin-bottom:2px;
    }

    .footer-note{
      color:var(--muted);
      line-height:1.9;
      max-width:68ch;
    }

    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:flex-start;
    }

    .footer-links a{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:42px;
      padding:0 14px;
      border-radius:999px;
      border:1px solid rgba(171,192,255,.12);
      color:var(--muted);
      background: rgba(255,255,255,.02);
      transition: transform var(--transition), color var(--transition), background var(--transition), border-color var(--transition);
    }

    .footer-links a:hover,
    .footer-links a:focus-visible{
      color:var(--text);
      transform: translateY(-1px);
      border-color: rgba(111,227,255,.24);
      background: rgba(255,255,255,.05);
    }

    .footer-meta{
      margin-top:18px;
      padding-top:18px;
      border-top:1px solid rgba(171,192,255,.12);
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      align-items:center;
      justify-content:space-between;
      color:var(--muted-2);
      font-size:.92rem;
    }

    .to-top{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#dff7ff;
      font-weight:700;
    }

    .to-top::after{content:"↑"}

    .section-gap{
      display:grid;
      gap:16px;
    }

    .tag-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }

    .tag-row .chip{
      padding:8px 12px;
      background: rgba(255,255,255,.03);
    }

    .mobile-only{display:none}

    @media (max-width: 1080px){
      .hero-grid,
      .solution-layout,
      .result-layout,
      .news-layout,
      .cta-layout,
      .footer-grid{
        grid-template-columns:1fr;
      }
      .problem-grid,
      .voices-grid{
        grid-template-columns:repeat(2, minmax(0, 1fr));
      }
      .stats-grid{
        grid-template-columns:repeat(3, minmax(0, 1fr));
      }
    }

    @media (max-width: 860px){
      .nav-shell{
        position:relative;
        gap:12px;
      }

      .menu-toggle{
        display:inline-flex;
        margin-left:auto;
      }

      .site-nav{
        position:absolute;
        left:0;
        right:0;
        top:100%;
        display:grid;
        gap:12px;
        padding:14px 16px 16px;
        border-bottom-left-radius: 22px;
        border-bottom-right-radius: 22px;
        background: rgba(8, 12, 20, .96);
        border-top:1px solid rgba(171,192,255,.08);
        border-bottom:1px solid rgba(171,192,255,.14);
        box-shadow: 0 18px 34px rgba(0,0,0,.24);
        opacity:0;
        transform: translateY(-12px);
        pointer-events:none;
        transition: opacity var(--transition), transform var(--transition);
      }

      body.nav-open .site-nav{
        opacity:1;
        transform: translateY(0);
        pointer-events:auto;
      }

      .nav-links,
      .lang-switch{
        width:100%;
        justify-content:space-between;
      }

      .nav-links a{
        flex:1;
      }

      .lang-switch a{
        flex:1;
      }

      .hero-copy h1{
        font-size: clamp(2.2rem, 7vw, 3.6rem);
      }

      .visual-stage{
        grid-template-columns:1fr;
      }

      .problem-grid,
      .stats-grid,
      .voices-grid{
        grid-template-columns:1fr;
      }

      .matrix{
        grid-template-columns:1fr;
      }

      .matrix-card.wide{
        grid-column:auto;
      }
    }

    @media (max-width: 560px){
      main{
        padding-top:18px;
        gap:18px;
      }

      .hero-shell,
      .section-shell,
      .footer-shell{
        border-radius: 22px;
      }

      .hero-search{
        padding:12px;
      }

      .hero-search input,
      .btn{
        width:100%;
      }

      .hero-actions{
        width:100%;
      }

      .hero-actions .btn{
        width:100%;
      }

      .problem-card,
      .stat-card,
      .voice-card,
      .news-aside-card,
      .compare-card,
      .faq-item,
      .cta-side,
      .solution-card{
        padding:18px;
      }

      .news-link{
        padding:16px;
      }

      .faq-item summary,
      .faq-item .faq-body{
        padding-left:16px;
        padding-right:16px;
      }

      .footer-meta{
        gap:8px;
        justify-content:flex-start;
      }

      .brand-text small{
        display:none;
      }
    }

    @media (prefers-reduced-motion: reduce){
      html{scroll-behavior:auto}
      *, *::before, *::after{
        animation-duration:.01ms !important;
        animation-iteration-count:1 !important;
        transition-duration:.01ms !important;
      }
    }

/* roulang page: article */
:root{
      --bg: #090d16;
      --bg-soft: #0f1522;
      --panel: rgba(18, 24, 38, .88);
      --panel-2: rgba(24, 31, 49, .88);
      --line: rgba(171, 192, 255, .14);
      --line-strong: rgba(171, 192, 255, .22);
      --text: #eef3ff;
      --muted: #a8b3ce;
      --muted-2: #7f8aa8;
      --accent: #6fe3ff;
      --accent-2: #c48cff;
      --accent-3: #7af0c7;
      --danger: #ff8fb3;
      --shadow: 0 24px 70px rgba(0,0,0,.38);
      --shadow-soft: 0 16px 40px rgba(0,0,0,.22);
      --radius: 18px;
      --radius-lg: 24px;
      --radius-xl: 30px;
      --container: 1180px;
      --space: clamp(18px, 2.6vw, 28px);
      --gap: 18px;
      --transition: 180ms ease;
    }

    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      color:var(--text);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
      background:
        radial-gradient(1200px 650px at 15% -8%, rgba(111,227,255,.14), transparent 58%),
        radial-gradient(900px 520px at 85% 10%, rgba(196,140,255,.12), transparent 54%),
        radial-gradient(900px 640px at 50% 115%, rgba(122,240,199,.08), transparent 52%),
        linear-gradient(180deg, #070b12 0%, #0a0f18 100%);
      line-height:1.8;
      overflow-x:hidden;
    }
    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: 28px 28px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.55), rgba(0,0,0,.16));
      opacity:.35;
      z-index:-1;
    }
    body::after{
      content:"";
      position:fixed;
      inset:-20%;
      pointer-events:none;
      background:
        radial-gradient(circle at 20% 20%, rgba(111,227,255,.06), transparent 22%),
        radial-gradient(circle at 80% 28%, rgba(196,140,255,.07), transparent 20%),
        radial-gradient(circle at 50% 80%, rgba(122,240,199,.05), transparent 18%);
      filter: blur(20px);
      z-index:-1;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    *{box-sizing:border-box}
    :focus-visible{
      outline:2px solid rgba(111,227,255,.72);
      outline-offset:2px;
    }
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:60;
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      background: rgba(8, 12, 20, .76);
      border-bottom:1px solid rgba(171,192,255,.12);
      box-shadow: 0 1px 0 rgba(255,255,255,.02) inset;
    }
    .nav-shell{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      min-height:74px;
      padding:10px 0;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
    }
    .brand-mark{
      display:grid;
      place-items:center;
      width:40px;
      height:40px;
      border-radius:14px;
      color:#07101a;
      font-size:.92rem;
      font-weight:900;
      letter-spacing:.08em;
      background:
        linear-gradient(135deg, var(--accent) 0%, var(--accent-3) 50%, #f5fbff 100%);
      box-shadow:
        0 10px 30px rgba(111,227,255,.22),
        0 0 0 1px rgba(255,255,255,.18) inset;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      gap:2px;
      line-height:1.2;
    }
    .brand-text strong{
      font-size:1.02rem;
      letter-spacing:.01em;
      color:var(--text);
    }
    .brand-text small{
      font-size:.76rem;
      color:var(--muted);
    }
    .site-nav{
      display:flex;
      align-items:center;
      gap:14px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
      padding:6px;
      border-radius:999px;
      border:1px solid rgba(171,192,255,.12);
      background: rgba(255,255,255,.03);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.02);
    }
    .nav-links a{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:10px 16px;
      border-radius:999px;
      color:var(--muted);
      transition: transform var(--transition), background var(--transition), color var(--transition), box-shadow var(--transition), border-color var(--transition);
    }
    .nav-links a:hover,
    .nav-links a:focus-visible{
      color:var(--text);
      background: rgba(255,255,255,.06);
      transform: translateY(-1px);
    }
    .nav-links a.active{
      color:#08111a;
      background: linear-gradient(135deg, rgba(111,227,255,.96), rgba(122,240,199,.88));
      box-shadow: 0 12px 28px rgba(111,227,255,.18);
    }
    .lang-switch{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:6px;
      border-radius:999px;
      border:1px solid rgba(171,192,255,.12);
      background: rgba(255,255,255,.03);
    }
    .lang-switch a{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:9px 12px;
      border-radius:999px;
      font-size:.9rem;
      color:var(--muted);
      transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
    }
    .lang-switch a:hover,
    .lang-switch a:focus-visible{
      color:var(--text);
      background: rgba(255,255,255,.06);
      transform: translateY(-1px);
    }
    .lang-switch a.active{
      color:#08111a;
      background: linear-gradient(135deg, rgba(196,140,255,.96), rgba(111,227,255,.9));
      box-shadow: 0 10px 24px rgba(196,140,255,.16);
    }

    main{
      display:flex;
      flex-direction:column;
      gap:24px;
      padding:24px 0 48px;
    }
    .article-page{
      min-height: calc(100vh - 74px);
    }
    .article-hero{
      padding-top:6px;
    }
    .crumbs{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      margin-bottom:14px;
      color:var(--muted);
      font-size:.94rem;
    }
    .crumbs a{
      color:var(--text);
      opacity:.86;
      transition: opacity var(--transition), color var(--transition);
    }
    .crumbs a:hover,
    .crumbs a:focus-visible{
      color:var(--accent);
      opacity:1;
    }
    .crumbs span.sep{
      color:var(--muted-2);
    }

    .article-hero-shell{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(171,192,255,.14);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(180deg, rgba(24,31,49,.92), rgba(14,18,30,.9));
      box-shadow: var(--shadow);
      padding: clamp(22px, 4vw, 36px);
      display:grid;
      grid-template-columns: minmax(0, 1.6fr) minmax(280px, .92fr);
      gap:22px;
      isolation:isolate;
    }
    .article-hero-shell::before{
      content:"";
      position:absolute;
      inset:auto -10% -35% auto;
      width:360px;
      height:360px;
      border-radius:50%;
      background: radial-gradient(circle, rgba(111,227,255,.14) 0%, rgba(111,227,255,0) 70%);
      filter: blur(10px);
      z-index:-1;
    }
    .article-hero-shell::after{
      content:"";
      position:absolute;
      inset:0;
      pointer-events:none;
      background:
        linear-gradient(135deg, rgba(111,227,255,.08), transparent 35%),
        linear-gradient(315deg, rgba(196,140,255,.08), transparent 36%);
      opacity:.8;
      z-index:-1;
    }
    .article-hero-copy{
      display:flex;
      flex-direction:column;
      gap:16px;
    }
    .hero-tag-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
    }
    .burst{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      font-size:.86rem;
      font-weight:700;
      color:#08111a;
      background: linear-gradient(135deg, rgba(255,233,116,.98), rgba(255,163,122,.94));
      box-shadow: 0 10px 24px rgba(255,163,122,.16);
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 12px;
      border-radius:999px;
      border:1px solid rgba(171,192,255,.14);
      background: rgba(255,255,255,.04);
      color:var(--muted);
      font-size:.86rem;
    }
    .badge-accent{
      color:#08111a;
      border-color: transparent;
      background: linear-gradient(135deg, rgba(111,227,255,.96), rgba(122,240,199,.88));
      box-shadow: 0 10px 24px rgba(111,227,255,.16);
    }
    .badge-soft{
      color:var(--text);
      background: rgba(255,255,255,.05);
    }
    .article-hero h1{
      margin:0;
      font-size: clamp(1.7rem, 2.8vw, 3rem);
      line-height:1.2;
      letter-spacing:.01em;
    }
    .hero-summary{
      margin:0;
      color:var(--muted);
      font-size:1rem;
      line-height:1.86;
      max-width: 62ch;
    }
    .meta-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px 14px;
      color:var(--muted-2);
      font-size:.94rem;
    }
    .meta-row span{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      border:1px solid rgba(171,192,255,.11);
      background: rgba(255,255,255,.03);
    }
    .action-row{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      padding-top:4px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:700;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition), color var(--transition), opacity var(--transition);
      cursor:pointer;
      user-select:none;
      white-space:nowrap;
    }
    .btn:hover{
      transform: translateY(-1px);
      box-shadow: var(--shadow-soft);
    }
    .btn:active{
      transform: translateY(0);
      opacity:.96;
    }
    .btn-primary{
      color:#08111a;
      background: linear-gradient(135deg, rgba(111,227,255,.98), rgba(122,240,199,.92));
      box-shadow: 0 12px 28px rgba(111,227,255,.16);
    }
    .btn-primary:hover{
      border-color: rgba(255,255,255,.12);
    }
    .btn-secondary{
      color:var(--text);
      border-color: rgba(171,192,255,.18);
      background: rgba(255,255,255,.04);
    }
    .btn-secondary:hover{
      border-color: rgba(111,227,255,.28);
      background: rgba(255,255,255,.06);
    }
    .article-hero-side{
      display:flex;
      flex-direction:column;
      gap:16px;
      justify-content:space-between;
    }
    .notice-card,
    .content-card,
    .side-card,
    .empty-state{
      border:1px solid rgba(171,192,255,.14);
      background: linear-gradient(180deg, rgba(18, 24, 38, .92), rgba(14, 18, 30, .9));
      box-shadow: var(--shadow-soft);
    }
    .notice-card{
      border-radius: var(--radius-lg);
      padding:20px;
      position:relative;
      overflow:hidden;
    }
    .notice-card::after{
      content:"";
      position:absolute;
      inset:auto -18% -38% auto;
      width:210px;
      height:210px;
      border-radius:50%;
      background: radial-gradient(circle, rgba(196,140,255,.18) 0%, rgba(196,140,255,0) 70%);
      pointer-events:none;
    }
    .notice-label{
      display:inline-flex;
      align-items:center;
      padding:6px 10px;
      border-radius:999px;
      margin-bottom:12px;
      font-size:.84rem;
      color:#08111a;
      background: linear-gradient(135deg, rgba(255,233,116,.98), rgba(255,163,122,.94));
      font-weight:800;
    }
    .notice-card p{
      margin:0;
      color:var(--muted);
      line-height:1.84;
    }
    .tag-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      padding:4px 0 0;
    }
    .tag-cloud .chip{
      display:inline-flex;
      align-items:center;
      padding:8px 12px;
      border-radius:999px;
      border:1px solid rgba(171,192,255,.14);
      background: rgba(255,255,255,.04);
      color:var(--text);
      font-size:.88rem;
      line-height:1;
    }

    .article-layout{
      padding-top:2px;
    }
    .layout-grid{
      display:grid;
      grid-template-columns: minmax(0, 1.72fr) minmax(280px, .92fr);
      gap:20px;
      align-items:start;
    }
    .content-card{
      border-radius: var(--radius-xl);
      overflow:hidden;
      padding:0;
    }
    .content-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:16px;
      padding:22px 24px;
      border-bottom:1px solid rgba(171,192,255,.12);
      background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,0));
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin-bottom:8px;
      color:var(--accent);
      font-size:.84rem;
      font-weight:800;
      letter-spacing:.12em;
      text-transform:uppercase;
    }
    .content-head h2,
    .side-card h3{
      margin:0;
      line-height:1.2;
      font-size:1.18rem;
    }
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--muted);
      font-size:.94rem;
      transition: color var(--transition), transform var(--transition);
    }
    .text-link:hover,
    .text-link:focus-visible{
      color:var(--accent);
      transform: translateY(-1px);
    }
    .article-body{
      padding:24px;
      color:var(--text);
      font-size:1rem;
      line-height:1.9;
    }
    .article-body :where(h2,h3,h4){
      margin:1.7em 0 .85em;
      line-height:1.3;
      color:var(--text);
    }
    .article-body h2{font-size:1.5rem}
    .article-body h3{font-size:1.22rem}
    .article-body h4{font-size:1.05rem}
    .article-body p{
      margin:0 0 1.05em;
      color:rgba(238,243,255,.92);
    }
    .article-body p:last-child{margin-bottom:0}
    .article-body a{
      color:var(--accent);
      text-decoration:underline;
      text-underline-offset:3px;
      text-decoration-color: rgba(111,227,255,.42);
      transition: color var(--transition), text-decoration-color var(--transition);
    }
    .article-body a:hover,
    .article-body a:focus-visible{
      color:#a9efff;
      text-decoration-color: rgba(169,239,255,.82);
    }
    .article-body ul,
    .article-body ol{
      margin:0 0 1.05em 1.2em;
      padding:0;
      color:rgba(238,243,255,.92);
    }
    .article-body li{
      margin:.46em 0;
      padding-left:.2em;
    }
    .article-body blockquote{
      margin:1.3em 0;
      padding:16px 18px;
      border-left:3px solid var(--accent);
      background: rgba(111,227,255,.06);
      border-radius: 0 var(--radius) var(--radius) 0;
      color:var(--text);
    }
    .article-body hr{
      border:0;
      border-top:1px solid rgba(171,192,255,.14);
      margin:1.5em 0;
    }
    .article-body strong{
      color:#ffffff;
      font-weight:800;
    }
    .article-body em{
      color:#d9e6ff;
    }
    .article-body code{
      padding:.14em .42em;
      border-radius:8px;
      background: rgba(255,255,255,.08);
      color:#dff8ff;
      font-size:.94em;
    }
    .article-body pre{
      margin:1.2em 0;
      padding:16px 18px;
      overflow:auto;
      border-radius:16px;
      border:1px solid rgba(171,192,255,.14);
      background: #0a1120;
      color:#e9f5ff;
      box-shadow: inset 0 1px 0 rgba(255,255,255,.02);
    }
    .article-body pre code{
      padding:0;
      background:none;
      color:inherit;
      font-size:.92rem;
      line-height:1.8;
    }
    .article-body figure{
      margin:1.3em 0;
    }
    .article-body figcaption{
      margin-top:.55em;
      color:var(--muted);
      font-size:.9rem;
      text-align:center;
    }
    .article-body img{
      border-radius:18px;
      border:1px solid rgba(171,192,255,.14);
      box-shadow: 0 18px 34px rgba(0,0,0,.22);
    }
    .article-body table{
      width:100%;
      border-collapse:collapse;
      margin:1.3em 0;
      overflow:hidden;
      border-radius:16px;
      border:1px solid rgba(171,192,255,.14);
      background: rgba(255,255,255,.03);
    }
    .article-body th,
    .article-body td{
      padding:12px 14px;
      border-bottom:1px solid rgba(171,192,255,.12);
      text-align:left;
      vertical-align:top;
    }
    .article-body th{
      background: rgba(255,255,255,.05);
      color:#fff;
      font-weight:800;
    }
    .article-body tr:last-child td{border-bottom:0}

    .sidebar{
      position:sticky;
      top:92px;
      display:flex;
      flex-direction:column;
      gap:16px;
    }
    .side-card{
      border-radius: var(--radius-lg);
      padding:20px;
    }
    .side-card h3{
      margin-bottom:14px;
      font-size:1.08rem;
    }
    .meta-list{
      display:grid;
      gap:12px;
    }
    .meta-item{
      display:flex;
      justify-content:space-between;
      gap:16px;
      padding:12px 14px;
      border-radius:14px;
      border:1px solid rgba(171,192,255,.12);
      background: rgba(255,255,255,.03);
    }
    .meta-item span{
      color:var(--muted);
      font-size:.92rem;
      flex:0 0 auto;
    }
    .meta-item strong{
      color:var(--text);
      font-weight:700;
      text-align:right;
      word-break:break-word;
    }
    .quick-links{
      display:grid;
      gap:10px;
    }
    .quick-links a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:12px 14px;
      border-radius:14px;
      border:1px solid rgba(171,192,255,.12);
      background: rgba(255,255,255,.03);
      color:var(--text);
      transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
    }
    .quick-links a:hover,
    .quick-links a:focus-visible{
      transform: translateY(-1px);
      border-color: rgba(111,227,255,.26);
      background: rgba(255,255,255,.05);
      box-shadow: 0 14px 24px rgba(0,0,0,.18);
    }
    .quick-links a small{
      color:var(--muted);
    }
    .support-note{
      margin:0;
      color:var(--muted);
      line-height:1.84;
    }

    .empty-state{
      margin:10px auto 0;
      max-width:720px;
      border-radius: var(--radius-xl);
      padding: clamp(28px, 5vw, 52px);
      text-align:center;
      display:flex;
      flex-direction:column;
      align-items:center;
      gap:16px;
      background:
        linear-gradient(180deg, rgba(18, 24, 38, .94), rgba(14, 18, 30, .92));
    }
    .empty-state h1{
      margin:0;
      font-size: clamp(1.6rem, 3vw, 2.4rem);
      line-height:1.2;
    }
    .empty-state p{
      margin:0;
      color:var(--muted);
      max-width:54ch;
    }

    .footer{
      margin-top:16px;
      padding:24px 0 34px;
    }
    .footer-shell{
      border:1px solid rgba(171,192,255,.14);
      background: linear-gradient(180deg, rgba(18, 24, 38, .92), rgba(12, 16, 26, .9));
      border-radius: var(--radius-xl);
      padding:24px;
      box-shadow: var(--shadow-soft);
    }
    .footer-grid{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:24px;
    }
    .footer-brand{
      max-width:560px;
    }
    .footer-note{
      margin-top:14px;
      color:var(--muted);
      line-height:1.8;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      justify-content:flex-end;
      gap:10px;
    }
    .footer-links a{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:10px 14px;
      border-radius:999px;
      border:1px solid rgba(171,192,255,.12);
      background: rgba(255,255,255,.03);
      color:var(--muted);
      transition: transform var(--transition), color var(--transition), background var(--transition), border-color var(--transition);
    }
    .footer-links a:hover,
    .footer-links a:focus-visible{
      transform: translateY(-1px);
      color:var(--text);
      border-color: rgba(111,227,255,.24);
      background: rgba(255,255,255,.05);
    }
    .footer-meta{
      margin-top:18px;
      padding-top:18px;
      border-top:1px solid rgba(171,192,255,.12);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      color:var(--muted-2);
      font-size:.92rem;
    }
    .to-top{
      color:var(--text);
      opacity:.84;
      transition: opacity var(--transition), color var(--transition), transform var(--transition);
    }
    .to-top:hover,
    .to-top:focus-visible{
      opacity:1;
      color:var(--accent);
      transform: translateY(-1px);
    }

    @media (max-width: 1024px){
      .article-hero-shell,
      .layout-grid{
        grid-template-columns: 1fr;
      }
      .sidebar{
        position:static;
      }
    }
    @media (max-width: 768px){
      .nav-shell{
        flex-direction:column;
        align-items:flex-start;
      }
      .site-nav{
        width:100%;
        justify-content:space-between;
      }
      .nav-links,
      .lang-switch{
        width:100%;
        justify-content:space-between;
      }
      .nav-links a,
      .lang-switch a{
        flex:1 1 0;
      }
      main{
        padding-top:18px;
      }
      .article-hero-shell{
        padding:20px;
      }
      .content-head{
        align-items:flex-start;
        flex-direction:column;
      }
      .footer-grid{
        flex-direction:column;
      }
      .footer-links{
        justify-content:flex-start;
      }
    }
    @media (max-width: 520px){
      .container{
        width:min(var(--container), calc(100% - 22px));
      }
      .nav-links,
      .lang-switch{
        gap:4px;
        padding:4px;
      }
      .nav-links a,
      .lang-switch a{
        padding:9px 10px;
        font-size:.86rem;
      }
      .article-hero h1{
        font-size:1.65rem;
      }
      .article-body,
      .content-head,
      .side-card,
      .notice-card,
      .footer-shell{
        padding-left:16px;
        padding-right:16px;
      }
      .article-body{
        padding-top:18px;
        padding-bottom:18px;
      }
      .meta-row span,
      .badge,
      .burst{
        width:100%;
        justify-content:center;
      }
      .action-row .btn{
        width:100%;
      }
      .footer-meta{
        flex-direction:column;
        align-items:flex-start;
      }
    }