/* roulang page: index */
:root{
      --bg:#080b0d;
      --bg-2:#0e1114;
      --panel:#14191e;
      --panel-2:#171d23;
      --panel-3:#101519;
      --line:rgba(22,242,165,.22);
      --line-soft:rgba(174,183,194,.14);
      --text:#f5f7fa;
      --muted:#aeb7c2;
      --weak:#6f7a86;
      --primary:#16f2a5;
      --primary-2:#24e0ff;
      --purple:#8a5cff;
      --amber:#ffb84d;
      --danger:#ff6b7a;
      --radius-sm:12px;
      --radius:18px;
      --radius-lg:28px;
      --shadow:0 22px 70px rgba(0,0,0,.42);
      --glow:0 0 0 1px rgba(22,242,165,.22),0 0 34px rgba(22,242,165,.11);
      --container:1200px;
      --nav-h:76px;
      --font:PingFang SC,Microsoft YaHei,Noto Sans SC,Arial,sans-serif;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:var(--font);
      font-size:16px;
      line-height:1.75;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(36,224,255,.12), transparent 28%),
        radial-gradient(circle at 82% 18%, rgba(138,92,255,.12), transparent 30%),
        linear-gradient(180deg,#080b0d 0%,#0b0f12 44%,#080b0d 100%);
      overflow-x:hidden;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      z-index:-1;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom,rgba(0,0,0,.8),rgba(0,0,0,.12));
    }
    a{color:inherit;text-decoration:none;transition:color .22s ease, transform .22s ease, border-color .22s ease}
    a:hover{color:var(--primary)}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(22,242,165,.28);color:var(--text)}
    :focus-visible{outline:3px solid rgba(36,224,255,.45);outline-offset:3px;border-radius:10px}

    .site-container{width:min(100% - 32px,var(--container));margin-inline:auto}
    .section-pad{padding:92px 0}
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:9px;
      color:var(--primary);
      font-weight:800;
      letter-spacing:.08em;
      font-size:13px;
      text-transform:uppercase;
      margin-bottom:14px;
    }
    .section-kicker:before{
      content:"";
      width:28px;
      height:2px;
      background:linear-gradient(90deg,var(--primary),transparent);
      box-shadow:0 0 18px rgba(22,242,165,.45);
    }
    .section-title{
      font-size:clamp(28px,3.4vw,42px);
      line-height:1.22;
      letter-spacing:-.04em;
      margin:0 0 16px;
      font-weight:900;
    }
    .section-desc{
      color:var(--muted);
      max-width:760px;
      margin:0;
      font-size:17px;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(8,11,13,.93);
      border-bottom:1px solid rgba(174,183,194,.12);
      box-shadow:0 14px 40px rgba(0,0,0,.26);
    }
    .navbar{
      min-height:var(--nav-h);
      padding:0;
    }
    .navbar-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:var(--text)!important;
      font-weight:900;
      letter-spacing:-.03em;
      max-width:60%;
      white-space:normal;
      line-height:1.15;
    }
    .logo-mark{
      width:42px;
      height:42px;
      flex:0 0 42px;
      border:1px solid rgba(22,242,165,.5);
      background:
        linear-gradient(135deg,rgba(22,242,165,.16),rgba(36,224,255,.08)),
        #11171c;
      border-radius:14px;
      position:relative;
      box-shadow:var(--glow);
      clip-path:polygon(10% 0,100% 0,100% 78%,78% 100%,0 100%,0 10%);
    }
    .logo-mark:after{
      content:"";
      position:absolute;
      left:16px;
      top:11px;
      border-left:13px solid var(--primary);
      border-top:9px solid transparent;
      border-bottom:9px solid transparent;
      filter:drop-shadow(0 0 8px rgba(22,242,165,.8));
    }
    .navbar-toggler{
      border:1px solid rgba(22,242,165,.35);
      border-radius:12px;
      padding:9px 11px;
      box-shadow:none!important;
    }
    .navbar-toggler-icon{
      width:1.3em;
      height:1.3em;
      filter:invert(1) brightness(2);
    }
    .nav-link{
      color:var(--muted)!important;
      font-weight:800;
      padding:10px 14px!important;
      border-radius:12px;
      min-height:44px;
      display:flex;
      align-items:center;
    }
    .nav-link:hover,.nav-link.active{
      color:var(--primary)!important;
      background:rgba(22,242,165,.08);
    }
    .nav-tools{
      display:flex;
      align-items:center;
      gap:12px;
      margin-left:18px;
    }
    .lang-pill{
      display:inline-flex;
      align-items:center;
      gap:4px;
      min-height:38px;
      padding:4px;
      border:1px solid rgba(174,183,194,.18);
      border-radius:999px;
      background:#101519;
      color:var(--weak);
      font-size:12px;
      font-weight:800;
      white-space:nowrap;
    }
    .lang-pill span{
      padding:5px 9px;
      border-radius:999px;
    }
    .lang-pill .on{
      background:rgba(22,242,165,.16);
      color:var(--primary);
      box-shadow:inset 0 0 0 1px rgba(22,242,165,.18);
    }

    .btn-neon,.btn-ghost,.btn-darkline{
      min-height:46px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      border-radius:15px;
      padding:12px 20px;
      font-weight:900;
      border:1px solid transparent;
      transition:transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease;
      position:relative;
      overflow:hidden;
    }
    .btn-neon{
      color:#06110d;
      background:linear-gradient(135deg,var(--primary),#93ffd6 52%,var(--primary-2));
      box-shadow:0 14px 34px rgba(22,242,165,.22);
    }
    .btn-neon:hover{color:#03100b;transform:translateY(-2px);box-shadow:0 18px 46px rgba(22,242,165,.34)}
    .btn-neon:active,.btn-ghost:active,.btn-darkline:active{transform:translateY(1px);box-shadow:none}
    .btn-ghost{
      color:var(--text);
      background:rgba(20,25,30,.78);
      border-color:rgba(22,242,165,.42);
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.03);
    }
    .btn-ghost:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-2px);box-shadow:0 16px 36px rgba(22,242,165,.12)}
    .btn-darkline{
      color:var(--muted);
      background:#0e1418;
      border-color:rgba(174,183,194,.16);
    }
    .btn-darkline:hover{color:var(--primary);border-color:rgba(22,242,165,.42)}

    .hero{
      min-height:720px;
      display:flex;
      align-items:center;
      position:relative;
      padding:110px 0 72px;
      overflow:hidden;
      isolation:isolate;
      border-bottom:1px solid rgba(174,183,194,.1);
    }
    .hero:before{
      content:"";
      position:absolute;
      inset:0;
      z-index:-2;
      background:
        linear-gradient(90deg,rgba(8,11,13,.98) 0%,rgba(8,11,13,.72) 44%,rgba(8,11,13,.94) 100%),
        radial-gradient(circle at 70% 48%,rgba(22,242,165,.2),transparent 34%),
        radial-gradient(circle at 42% 22%,rgba(138,92,255,.2),transparent 28%);
    }
    .hero:after{
      content:"";
      position:absolute;
      inset:72px 0 0;
      z-index:-1;
      background:
        linear-gradient(115deg,transparent 0 32%,rgba(22,242,165,.08) 32.2% 33.2%,transparent 33.4%),
        linear-gradient(160deg,transparent 0 62%,rgba(36,224,255,.08) 62.2% 63.1%,transparent 63.3%);
      opacity:.9;
    }
    .kv-shell{
      border:1px solid rgba(22,242,165,.24);
      background:
        linear-gradient(135deg,rgba(20,25,30,.92),rgba(16,21,25,.78)),
        repeating-linear-gradient(90deg,rgba(255,255,255,.025) 0 1px,transparent 1px 16px);
      box-shadow:var(--shadow),var(--glow);
      border-radius:var(--radius-lg);
      clip-path:polygon(0 0,96% 0,100% 9%,100% 100%,4% 100%,0 91%);
      padding:44px;
      position:relative;
      overflow:hidden;
    }
    .kv-shell:before{
      content:"";
      position:absolute;
      right:-130px;
      top:-160px;
      width:430px;
      height:430px;
      background:radial-gradient(circle,rgba(22,242,165,.22),transparent 62%);
      pointer-events:none;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:38px;
      align-items:center;
    }
    .hero-badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
    .badge-soft,.badge-purple,.badge-amber,.badge-line{
      display:inline-flex;
      align-items:center;
      gap:7px;
      border-radius:999px;
      padding:7px 11px;
      font-size:13px;
      font-weight:900;
      line-height:1.1;
      border:1px solid transparent;
    }
    .badge-soft{background:rgba(22,242,165,.12);color:var(--primary);border-color:rgba(22,242,165,.22)}
    .badge-purple{background:rgba(138,92,255,.13);color:#c8b7ff;border-color:rgba(138,92,255,.28)}
    .badge-amber{background:rgba(255,184,77,.12);color:var(--amber);border-color:rgba(255,184,77,.25)}
    .badge-line{background:#101519;color:var(--muted);border-color:rgba(174,183,194,.16)}
    h1{
      font-size:clamp(32px,5.2vw,58px);
      line-height:1.12;
      letter-spacing:-.055em;
      margin:0 0 22px;
      font-weight:950;
    }
    .hero-lead{
      color:#d7dee6;
      font-size:18px;
      max-width:760px;
      margin:0 0 28px;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
    .countdown-bar{
      display:grid;
      grid-template-columns:auto 1fr auto;
      align-items:center;
      gap:18px;
      border:1px solid rgba(36,224,255,.18);
      background:rgba(8,11,13,.58);
      border-radius:18px;
      padding:14px 16px;
      max-width:720px;
    }
    .countdown-label{font-weight:900;color:var(--text)}
    .energy-track{
      height:10px;
      border-radius:99px;
      background:#0b1115;
      overflow:hidden;
      border:1px solid rgba(174,183,194,.12);
    }
    .energy-track span{
      display:block;
      height:100%;
      width:68%;
      background:linear-gradient(90deg,var(--primary),var(--primary-2));
      box-shadow:0 0 20px rgba(22,242,165,.55);
      animation:pulseWidth 4s ease-in-out infinite;
    }
    @keyframes pulseWidth{0%,100%{width:62%}50%{width:78%}}
    .countdown-time{font-weight:950;color:var(--primary);font-variant-numeric:tabular-nums;white-space:nowrap}

    .stage-board{
      position:relative;
      min-height:410px;
      border-radius:26px;
      border:1px solid rgba(174,183,194,.14);
      background:
        linear-gradient(145deg,rgba(22,242,165,.08),transparent 42%),
        #0d1216;
      padding:22px;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.025),0 30px 60px rgba(0,0,0,.34);
      overflow:hidden;
      clip-path:polygon(8% 0,100% 0,100% 86%,88% 100%,0 100%,0 12%);
    }
    .stage-board:before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(120deg,transparent,rgba(36,224,255,.08),transparent);
      transform:translateX(-90%);
      animation:sweep 6s ease-in-out infinite;
    }
    @keyframes sweep{50%{transform:translateX(90%)}100%{transform:translateX(90%)}}
    .poster-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
      position:relative;
      z-index:1;
    }
    .poster-tile{
      min-height:148px;
      border-radius:18px;
      background:
        linear-gradient(145deg,rgba(36,224,255,.12),rgba(138,92,255,.08)),
        linear-gradient(180deg,#1b232a,#10161b);
      border:1px solid rgba(22,242,165,.18);
      padding:16px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .poster-tile.large{grid-column:span 2;min-height:166px;background:linear-gradient(135deg,rgba(22,242,165,.16),rgba(20,25,30,.95) 54%,rgba(138,92,255,.14))}
    .tile-icon{
      width:42px;height:42px;
      border-radius:14px;
      display:grid;place-items:center;
      background:rgba(22,242,165,.12);
      color:var(--primary);
      border:1px solid rgba(22,242,165,.26);
      font-size:20px;
    }
    .tile-title{font-weight:950;font-size:20px;margin-top:18px}
    .tile-note{color:var(--muted);font-size:14px;margin:4px 0 0}

    .metric-strip{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
      margin-top:22px;
    }
    .metric-mini{
      border:1px solid rgba(174,183,194,.12);
      background:rgba(13,18,22,.82);
      border-radius:16px;
      padding:14px;
    }
    .metric-mini strong{display:block;color:var(--primary);font-size:20px;line-height:1.2}
    .metric-mini span{display:block;color:var(--muted);font-size:13px;margin-top:4px}

    .case-zone{
      background:linear-gradient(180deg,rgba(14,17,20,.2),rgba(14,17,20,.72));
    }
    .case-layout{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:28px;
      align-items:stretch;
      margin-top:34px;
    }
    .case-feature,.hud-card,.compare-card,.topic-card,.info-card,.faq-card,.contact-panel{
      background:linear-gradient(180deg,rgba(23,29,35,.94),rgba(15,20,24,.94));
      border:1px solid rgba(174,183,194,.13);
      border-radius:var(--radius);
      box-shadow:0 20px 55px rgba(0,0,0,.28);
    }
    .case-feature{
      padding:28px;
      position:relative;
      overflow:hidden;
      min-height:100%;
    }
    .case-feature:after{
      content:"";
      position:absolute;
      right:-90px;
      bottom:-90px;
      width:230px;
      height:230px;
      background:radial-gradient(circle,rgba(22,242,165,.18),transparent 66%);
    }
    .quote-mark{
      font-size:56px;
      color:rgba(22,242,165,.42);
      line-height:1;
      font-weight:950;
    }
    .case-feature p{color:#d6dde5;font-size:18px;margin:10px 0 22px}
    .user-chip{display:flex;align-items:center;gap:12px}
    .avatar{
      width:44px;height:44px;border-radius:50%;
      display:grid;place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--purple));
      color:#07110d;font-weight:950;
      box-shadow:0 0 22px rgba(22,242,165,.22);
    }
    .user-chip b{display:block}
    .user-chip small{display:block;color:var(--weak)}
    .case-list{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:16px;
    }
    .bubble-card{
      border:1px solid rgba(174,183,194,.12);
      background:rgba(16,21,25,.92);
      border-radius:18px;
      padding:20px;
      transition:transform .22s ease,border-color .22s ease,background .22s ease;
    }
    .bubble-card:hover{transform:translateY(-4px);border-color:rgba(22,242,165,.4);background:rgba(20,27,32,.96)}
    .bubble-card h3{font-size:18px;margin:12px 0 8px;font-weight:950}
    .bubble-card p{color:var(--muted);font-size:15px;margin:0}

    .data-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:22px;
      margin-top:34px;
    }
    .hud-card{padding:28px;overflow:hidden;position:relative}
    .hud-card h3{font-size:24px;font-weight:950;margin:0 0 12px}
    .hud-card p{color:var(--muted);margin:0 0 22px}
    .progress-stack{display:grid;gap:18px}
    .progress-row{display:grid;grid-template-columns:130px 1fr 54px;align-items:center;gap:14px;color:var(--muted);font-size:14px}
    .bar{
      height:12px;
      border-radius:999px;
      background:#0b1014;
      border:1px solid rgba(174,183,194,.1);
      overflow:hidden;
    }
    .bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--primary-2));box-shadow:0 0 18px rgba(22,242,165,.42)}
    .data-side{
      display:grid;
      gap:16px;
    }
    .number-card{
      padding:22px;
      border-radius:20px;
      background:linear-gradient(135deg,rgba(22,242,165,.11),rgba(23,29,35,.94));
      border:1px solid rgba(22,242,165,.2);
    }
    .number-card strong{display:block;font-size:34px;line-height:1;color:var(--primary);font-weight:950}
    .number-card span{display:block;color:var(--muted);margin-top:10px}

    .compare-wrap{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:20px;
      margin-top:34px;
    }
    .compare-card{padding:26px;position:relative;overflow:hidden}
    .compare-card h3{font-size:22px;font-weight:950;margin:0 0 18px}
    .compare-list{list-style:none;margin:0;padding:0;display:grid;gap:13px}
    .compare-list li{
      display:flex;
      gap:12px;
      color:var(--muted);
      border-bottom:1px solid rgba(174,183,194,.08);
      padding-bottom:13px;
    }
    .compare-list li:last-child{border-bottom:0;padding-bottom:0}
    .check,.cross{
      width:24px;height:24px;border-radius:8px;
      display:grid;place-items:center;
      flex:0 0 24px;
      font-weight:950;
      font-size:13px;
    }
    .check{background:rgba(22,242,165,.14);color:var(--primary)}
    .cross{background:rgba(255,107,122,.12);color:var(--danger)}
    .compare-card.good{border-color:rgba(22,242,165,.28);box-shadow:var(--glow)}

    .media-scroll{
      display:flex;
      gap:18px;
      overflow-x:auto;
      padding:34px 2px 10px;
      scroll-snap-type:x mandatory;
      scrollbar-color:rgba(22,242,165,.55) rgba(174,183,194,.12);
    }
    .media-card{
      flex:0 0 315px;
      scroll-snap-align:start;
      border-radius:22px;
      border:1px solid rgba(174,183,194,.13);
      background:#12181d;
      overflow:hidden;
      transition:transform .22s ease,border-color .22s ease;
    }
    .media-card:hover{transform:translateY(-5px);border-color:rgba(22,242,165,.4)}
    .media-visual{
      aspect-ratio:16/9;
      background:
        linear-gradient(135deg,rgba(22,242,165,.16),rgba(138,92,255,.12)),
        repeating-linear-gradient(135deg,rgba(255,255,255,.06) 0 1px,transparent 1px 12px);
      display:flex;
      align-items:flex-end;
      padding:16px;
    }
    .media-card-body{padding:18px}
    .media-card-body h3{font-size:19px;font-weight:950;margin:0 0 8px}
    .media-card-body p{color:var(--muted);font-size:15px;margin:0}

    .topic-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
      margin-top:34px;
    }
    .topic-card{
      padding:22px;
      transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
      position:relative;
      overflow:hidden;
    }
    .topic-card:before{
      content:"";
      position:absolute;
      inset:auto 18px 0 auto;
      width:90px;
      height:90px;
      background:radial-gradient(circle,rgba(22,242,165,.16),transparent 68%);
    }
    .topic-card:hover{transform:translateY(-5px);border-color:rgba(22,242,165,.42);box-shadow:var(--glow)}
    .topic-card h3{font-size:20px;font-weight:950;margin:14px 0 8px}
    .topic-card p{color:var(--muted);font-size:15px;margin:0}
    .icon-box{
      width:46px;height:46px;
      border-radius:16px;
      display:grid;place-items:center;
      background:rgba(22,242,165,.1);
      border:1px solid rgba(22,242,165,.22);
      color:var(--primary);
      font-weight:950;
      font-size:20px;
    }

    .news-section{
      background:
        radial-gradient(circle at 82% 26%,rgba(36,224,255,.09),transparent 30%),
        linear-gradient(180deg,rgba(14,17,20,.55),rgba(8,11,13,.95));
    }
    .news-layout{
      display:grid;
      grid-template-columns:1.35fr .65fr;
      gap:22px;
      margin-top:34px;
      align-items:start;
    }
    .news-list{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:16px;
    }
    .info-card{
      padding:20px;
      transition:transform .22s ease,border-color .22s ease,background .22s ease;
      min-height:210px;
      display:flex;
      flex-direction:column;
    }
    .info-card:hover{transform:translateY(-4px);border-color:rgba(22,242,165,.4);background:linear-gradient(180deg,rgba(27,35,42,.96),rgba(15,20,24,.98))}
    .info-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
    .info-card h3{font-size:20px;line-height:1.35;font-weight:950;margin:0 0 10px}
    .info-card h3 a:hover{color:var(--primary)}
    .info-card p{
      color:var(--muted);
      margin:0 0 16px;
      font-size:15px;
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .read-link{
      margin-top:auto;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary);
      font-weight:900;
    }
    .read-link span{transition:transform .22s ease}
    .read-link:hover span{transform:translateX(4px)}
    .news-side{
      position:sticky;
      top:96px;
      border:1px solid rgba(22,242,165,.2);
      background:linear-gradient(180deg,rgba(22,242,165,.08),rgba(20,25,30,.92));
      border-radius:22px;
      padding:24px;
      box-shadow:var(--glow);
    }
    .news-side h3{font-size:22px;font-weight:950;margin:0 0 12px}
    .news-side p{color:var(--muted);margin:0 0 18px}
    .side-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
    .side-list li{
      padding:12px;
      border-radius:14px;
      background:rgba(8,11,13,.52);
      border:1px solid rgba(174,183,194,.09);
      color:#d9e0e8;
      font-size:14px;
    }
    .empty-state{
      grid-column:1 / -1;
      border:1px dashed rgba(22,242,165,.35);
      border-radius:20px;
      padding:30px;
      color:var(--muted);
      background:rgba(20,25,30,.72);
      text-align:center;
    }

    .contact-panel{
      padding:34px;
      display:grid;
      grid-template-columns:1fr .9fr;
      gap:28px;
      align-items:center;
      overflow:hidden;
      position:relative;
    }
    .contact-panel:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(120deg,transparent 0 58%,rgba(22,242,165,.08) 58.3% 60%,transparent 60.3%),
        radial-gradient(circle at 88% 24%,rgba(138,92,255,.16),transparent 28%);
      pointer-events:none;
    }
    .contact-panel > *{position:relative}
    .mini-form{
      border:1px solid rgba(174,183,194,.14);
      border-radius:22px;
      padding:20px;
      background:rgba(8,11,13,.5);
    }
    .form-control{
      min-height:48px;
      color:var(--text);
      background:#0d1317;
      border:1px solid rgba(174,183,194,.16);
      border-radius:14px;
      box-shadow:none!important;
    }
    .form-control::placeholder{color:var(--weak)}
    .form-control:focus{
      color:var(--text);
      background:#0f161b;
      border-color:rgba(22,242,165,.62);
      box-shadow:0 0 0 .2rem rgba(22,242,165,.12)!important;
    }
    textarea.form-control{min-height:112px;resize:vertical}
    .form-hint{color:var(--weak);font-size:13px;margin-top:10px}

    .faq-wrap{max-width:960px;margin:34px auto 0}
    .accordion{display:grid;gap:14px}
    .accordion-item{
      color:var(--text);
      background:transparent;
      border:0;
    }
    .accordion-button{
      color:var(--text);
      background:linear-gradient(180deg,rgba(23,29,35,.96),rgba(15,20,24,.96));
      border:1px solid rgba(174,183,194,.13);
      border-left:3px solid rgba(22,242,165,.58);
      border-radius:18px!important;
      font-weight:950;
      padding:18px 20px;
      box-shadow:none!important;
    }
    .accordion-button:not(.collapsed){
      color:var(--primary);
      background:linear-gradient(180deg,rgba(22,242,165,.09),rgba(15,20,24,.98));
      border-color:rgba(22,242,165,.34);
    }
    .accordion-button::after{
      filter:invert(1);
      transition:transform .22s ease;
    }
    .accordion-body{
      color:var(--muted);
      background:#11171c;
      border:1px solid rgba(174,183,194,.1);
      border-top:0;
      border-radius:0 0 18px 18px;
      padding:18px 20px 22px;
      line-height:1.8;
    }

    .final-cta{
      padding:82px 0;
    }
    .cta-banner{
      border:1px solid rgba(22,242,165,.28);
      border-radius:30px;
      padding:42px;
      text-align:center;
      background:
        radial-gradient(circle at 20% 20%,rgba(22,242,165,.18),transparent 30%),
        radial-gradient(circle at 82% 70%,rgba(36,224,255,.12),transparent 34%),
        linear-gradient(135deg,#12181d,#0b1014);
      box-shadow:var(--shadow),var(--glow);
      clip-path:polygon(4% 0,100% 0,100% 82%,96% 100%,0 100%,0 18%);
    }
    .cta-banner h2{font-size:clamp(28px,3.7vw,44px);font-weight:950;letter-spacing:-.04em;margin:0 0 14px}
    .cta-banner p{color:var(--muted);max-width:760px;margin:0 auto 24px}

    .site-footer{
      border-top:1px solid rgba(174,183,194,.12);
      background:#070a0c;
      padding:54px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:28px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:950;
      font-size:20px;
      margin-bottom:14px;
    }
    .footer-text{color:var(--muted);max-width:520px;margin:0}
    .footer-title{font-weight:950;margin:0 0 14px;color:var(--text)}
    .footer-links{list-style:none;margin:0;padding:0;display:grid;gap:10px}
    .footer-links a{color:var(--muted)}
    .footer-links a:hover{color:var(--primary)}
    .copyright{
      margin-top:34px;
      padding-top:22px;
      border-top:1px solid rgba(174,183,194,.1);
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:var(--weak);
      font-size:14px;
    }

    @media (max-width:1199px){
      .kv-shell{padding:34px}
      .hero-grid,.data-grid{grid-template-columns:1fr}
      .stage-board{min-height:auto}
      .metric-strip{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:991px){
      :root{--nav-h:66px}
      .navbar-collapse{
        margin-top:12px;
        padding:14px;
        background:#0f1418;
        border:1px solid rgba(174,183,194,.14);
        border-radius:18px;
      }
      .nav-tools{margin-left:0;margin-top:12px;align-items:stretch;flex-direction:column}
      .lang-pill{width:max-content}
      .hero{padding:82px 0 52px;min-height:auto}
      .case-layout,.compare-wrap,.contact-panel,.news-layout,.footer-grid{grid-template-columns:1fr}
      .case-list,.news-list{grid-template-columns:1fr 1fr}
      .news-side{position:static}
      .topic-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:767px){
      .site-container{width:min(100% - 24px,var(--container))}
      .section-pad{padding:64px 0}
      .kv-shell{padding:24px;border-radius:24px;clip-path:none}
      .hero-grid{gap:24px}
      .hero-actions .btn-neon,.hero-actions .btn-ghost{width:100%}
      .countdown-bar{grid-template-columns:1fr;gap:10px}
      .poster-grid,.case-list,.news-list,.topic-grid{grid-template-columns:1fr}
      .poster-tile.large{grid-column:auto}
      .progress-row{grid-template-columns:1fr;gap:7px}
      .media-card{flex-basis:280px}
      .contact-panel{padding:24px}
      .footer-grid{gap:24px}
      .copyright{display:block}
      .copyright span{display:block;margin-top:8px}
    }
    @media (max-width:480px){
      .navbar-brand{font-size:16px;max-width:72%}
      .logo-mark{width:38px;height:38px;flex-basis:38px}
      .hero-badge-row{gap:8px}
      .badge-soft,.badge-purple,.badge-amber,.badge-line{font-size:12px}
      .metric-strip{grid-template-columns:1fr}
      .cta-banner{padding:30px 20px;clip-path:none}
      .section-desc,.hero-lead{font-size:16px}
    }

/* roulang page: article */
:root{
      --bg:#080b0d;
      --bg-2:#0e1114;
      --panel:#14191e;
      --panel-2:#171d23;
      --panel-3:#101519;
      --line:rgba(22,242,165,.22);
      --line-soft:rgba(174,183,194,.14);
      --text:#f5f7fa;
      --muted:#aeb7c2;
      --weak:#6f7a86;
      --primary:#16f2a5;
      --primary-2:#24e0ff;
      --purple:#8a5cff;
      --amber:#ffb84d;
      --danger:#ff6b7a;
      --radius-sm:12px;
      --radius:18px;
      --radius-lg:28px;
      --shadow:0 22px 70px rgba(0,0,0,.42);
      --glow:0 0 0 1px rgba(22,242,165,.22),0 0 34px rgba(22,242,165,.11);
      --container:1200px;
      --nav-h:76px;
      --font:PingFang SC,Microsoft YaHei,Noto Sans SC,Arial,sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:var(--font);
      font-size:16px;
      line-height:1.75;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(36,224,255,.12), transparent 28%),
        radial-gradient(circle at 82% 18%, rgba(138,92,255,.12), transparent 30%),
        linear-gradient(180deg,#080b0d 0%,#0b0f12 44%,#080b0d 100%);
      overflow-x:hidden;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      z-index:-1;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom,rgba(0,0,0,.8),rgba(0,0,0,.12));
    }
    a{color:inherit;text-decoration:none;transition:color .22s ease, transform .22s ease, border-color .22s ease, background .22s ease}
    a:hover{color:var(--primary)}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(22,242,165,.28);color:var(--text)}
    :focus-visible{outline:3px solid rgba(36,224,255,.65);outline-offset:3px;border-radius:10px}

    .site-container{width:min(100% - 32px,var(--container));margin-inline:auto}
    .section-pad{padding:86px 0}
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:9px;
      color:var(--primary);
      font-weight:800;
      letter-spacing:.08em;
      font-size:13px;
      text-transform:uppercase;
      margin-bottom:14px;
    }
    .section-kicker:before{
      content:"";
      width:28px;
      height:2px;
      background:linear-gradient(90deg,var(--primary),transparent);
      box-shadow:0 0 18px rgba(22,242,165,.45);
    }
    .section-title{
      font-size:clamp(28px,3.4vw,42px);
      line-height:1.22;
      letter-spacing:-.04em;
      margin:0 0 16px;
      font-weight:900;
    }
    .section-desc{
      color:var(--muted);
      max-width:760px;
      margin:0;
      font-size:17px;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(8,11,13,.93);
      border-bottom:1px solid rgba(174,183,194,.12);
      box-shadow:0 14px 40px rgba(0,0,0,.26);
    }
    .navbar{min-height:var(--nav-h);padding:0}
    .navbar-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:var(--text)!important;
      font-weight:900;
      letter-spacing:-.03em;
      max-width:60%;
      white-space:normal;
      line-height:1.15;
    }
    .logo-mark{
      width:42px;
      height:42px;
      flex:0 0 42px;
      border:1px solid rgba(22,242,165,.5);
      background:
        linear-gradient(135deg,rgba(22,242,165,.16),rgba(36,224,255,.08)),
        #11171c;
      border-radius:14px;
      position:relative;
      box-shadow:var(--glow);
      clip-path:polygon(10% 0,100% 0,100% 78%,78% 100%,0 100%,0 10%);
    }
    .logo-mark:after{
      content:"";
      position:absolute;
      left:16px;
      top:11px;
      border-left:13px solid var(--primary);
      border-top:9px solid transparent;
      border-bottom:9px solid transparent;
      filter:drop-shadow(0 0 8px rgba(22,242,165,.8));
    }
    .navbar-toggler{
      border:1px solid rgba(22,242,165,.35);
      border-radius:12px;
      padding:9px 11px;
      box-shadow:none!important;
    }
    .navbar-toggler-icon{
      width:1.3em;
      height:1.3em;
      filter:invert(1) brightness(2);
    }
    .nav-link{
      color:var(--muted)!important;
      font-weight:800;
      padding:10px 14px!important;
      border-radius:12px;
      min-height:44px;
      display:flex;
      align-items:center;
    }
    .nav-link:hover,.nav-link.active{
      color:var(--primary)!important;
      background:rgba(22,242,165,.08);
    }
    .nav-tools{
      display:flex;
      align-items:center;
      gap:12px;
      margin-left:18px;
    }
    .lang-pill{
      display:inline-flex;
      align-items:center;
      gap:4px;
      min-height:38px;
      padding:4px;
      border:1px solid rgba(174,183,194,.18);
      border-radius:999px;
      background:#101519;
      color:var(--weak);
      font-size:12px;
      font-weight:800;
      white-space:nowrap;
    }
    .lang-pill span{padding:5px 9px;border-radius:999px}
    .lang-pill .on{
      background:rgba(22,242,165,.16);
      color:var(--primary);
      box-shadow:inset 0 0 0 1px rgba(22,242,165,.18);
    }
    .btn-neon,.btn-ghost,.btn-darkline{
      min-height:46px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      border-radius:15px;
      padding:12px 20px;
      font-weight:900;
      border:1px solid transparent;
      transition:transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease;
      position:relative;
      overflow:hidden;
    }
    .btn-neon{
      color:#06110d;
      background:linear-gradient(135deg,var(--primary),#93ffd6 52%,var(--primary-2));
      box-shadow:0 14px 34px rgba(22,242,165,.22);
    }
    .btn-neon:hover{color:#03100b;transform:translateY(-2px);box-shadow:0 18px 46px rgba(22,242,165,.34)}
    .btn-neon:active,.btn-ghost:active,.btn-darkline:active{transform:translateY(1px);box-shadow:none}
    .btn-ghost{
      color:var(--text);
      background:rgba(20,25,30,.78);
      border-color:rgba(22,242,165,.42);
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.03);
    }
    .btn-ghost:hover{color:var(--primary);border-color:var(--primary);transform:translateY(-2px);box-shadow:0 16px 36px rgba(22,242,165,.12)}
    .btn-darkline{
      color:var(--muted);
      background:#0e1317;
      border-color:rgba(174,183,194,.16);
    }
    .btn-darkline:hover{color:var(--primary);border-color:rgba(22,242,165,.42);transform:translateY(-2px)}
    .btn-neon span,.btn-ghost span,.btn-darkline span{transition:transform .2s ease}
    .btn-neon:hover span,.btn-ghost:hover span,.btn-darkline:hover span{transform:translateX(3px)}

    .article-hero{
      position:relative;
      padding:54px 0 44px;
      border-bottom:1px solid rgba(174,183,194,.12);
      overflow:hidden;
      background:
        linear-gradient(135deg,rgba(22,242,165,.07),transparent 42%),
        radial-gradient(circle at 80% 18%,rgba(138,92,255,.16),transparent 32%);
    }
    .article-hero:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(115deg,transparent 0 60%,rgba(22,242,165,.07) 60% 61%,transparent 61%),
        repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 18px);
      opacity:.55;
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      gap:28px;
      align-items:stretch;
    }
    .breadcrumb-wrap{
      margin-bottom:18px;
      color:var(--weak);
      font-size:14px;
      display:flex;
      align-items:center;
      gap:8px;
      flex-wrap:wrap;
    }
    .breadcrumb-wrap a{
      color:var(--muted);
      border-bottom:1px solid transparent;
    }
    .breadcrumb-wrap a:hover{
      color:var(--primary);
      border-color:rgba(22,242,165,.55);
    }
    .crumb-sep{color:rgba(174,183,194,.35)}
    .article-title{
      font-size:clamp(30px,4.3vw,52px);
      line-height:1.16;
      font-weight:950;
      letter-spacing:-.055em;
      margin:0 0 18px;
      max-width:920px;
    }
    .article-meta{
      display:flex;
      gap:10px;
      align-items:center;
      flex-wrap:wrap;
      margin-bottom:18px;
    }
    .badge-soft,.badge-primary,.badge-purple,.badge-amber{
      display:inline-flex;
      align-items:center;
      gap:7px;
      min-height:30px;
      padding:5px 11px;
      border-radius:999px;
      font-size:13px;
      font-weight:850;
      border:1px solid rgba(174,183,194,.16);
      color:var(--muted);
      background:rgba(16,21,25,.88);
    }
    .badge-primary{color:var(--primary);border-color:rgba(22,242,165,.32);background:rgba(22,242,165,.09)}
    .badge-purple{color:#c9bbff;border-color:rgba(138,92,255,.35);background:rgba(138,92,255,.11)}
    .badge-amber{color:var(--amber);border-color:rgba(255,184,77,.35);background:rgba(255,184,77,.1)}
    .summary-panel{
      position:relative;
      max-width:900px;
      margin-top:18px;
      padding:18px 20px;
      border-radius:var(--radius);
      border:1px solid rgba(22,242,165,.22);
      background:linear-gradient(135deg,rgba(20,25,30,.92),rgba(16,21,25,.82));
      box-shadow:var(--shadow);
      color:var(--muted);
    }
    .summary-panel:before{
      content:"";
      position:absolute;
      left:0;
      top:16px;
      bottom:16px;
      width:3px;
      border-radius:999px;
      background:linear-gradient(180deg,var(--primary),var(--primary-2));
      box-shadow:0 0 18px rgba(22,242,165,.45);
    }
    .hero-console{
      border:1px solid rgba(22,242,165,.22);
      background:
        radial-gradient(circle at 20% 10%,rgba(22,242,165,.16),transparent 36%),
        linear-gradient(180deg,rgba(23,29,35,.96),rgba(13,18,22,.96));
      border-radius:var(--radius-lg);
      padding:22px;
      box-shadow:var(--shadow);
      clip-path:polygon(0 0,92% 0,100% 10%,100% 100%,8% 100%,0 90%);
    }
    .count-ring{
      width:146px;
      height:146px;
      margin:2px auto 18px;
      border-radius:50%;
      background:
        conic-gradient(var(--primary) 0 72%,rgba(174,183,194,.12) 72% 100%);
      display:grid;
      place-items:center;
      box-shadow:0 0 42px rgba(22,242,165,.16);
      position:relative;
    }
    .count-ring:after{
      content:"";
      position:absolute;
      inset:11px;
      border-radius:50%;
      background:#101519;
      border:1px solid rgba(174,183,194,.14);
    }
    .count-ring strong,.count-ring span{position:relative;z-index:1;display:block;text-align:center}
    .count-ring strong{font-size:34px;line-height:1;color:var(--primary)}
    .count-ring span{font-size:12px;color:var(--weak);font-weight:800;margin-top:4px}
    .console-title{
      font-size:18px;
      font-weight:900;
      margin:0 0 12px;
      text-align:center;
    }
    .feature-dots{
      display:grid;
      gap:10px;
      margin:18px 0;
    }
    .feature-dot{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:10px 12px;
      border:1px solid rgba(174,183,194,.12);
      border-radius:14px;
      background:rgba(8,11,13,.38);
      color:var(--muted);
      font-size:14px;
      font-weight:800;
    }
    .feature-dot i{
      width:10px;
      height:10px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 18px rgba(22,242,165,.65);
      flex:0 0 auto;
    }
    .feature-dot small{color:var(--weak);font-weight:800}

    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,830px) minmax(260px,1fr);
      gap:30px;
      align-items:start;
    }
    .article-card,.side-card,.related-card,.empty-card,.faq-shell,.cta-band{
      border:1px solid rgba(174,183,194,.14);
      background:linear-gradient(180deg,rgba(23,29,35,.94),rgba(14,19,23,.94));
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
    }
    .article-card{
      padding:34px;
      overflow:hidden;
    }
    .article-content{
      color:#dce3ea;
      font-size:17px;
      line-height:1.86;
      word-break:break-word;
    }
    .article-content h2{
      font-size:clamp(24px,2.6vw,32px);
      line-height:1.32;
      margin:42px 0 16px;
      font-weight:930;
      letter-spacing:-.035em;
      position:relative;
      padding-top:18px;
    }
    .article-content h2:before{
      content:"";
      position:absolute;
      left:0;
      top:0;
      width:52px;
      height:3px;
      border-radius:999px;
      background:linear-gradient(90deg,var(--primary),transparent);
      box-shadow:0 0 18px rgba(22,242,165,.45);
    }
    .article-content h3{
      font-size:clamp(20px,2vw,24px);
      margin:32px 0 12px;
      font-weight:900;
      color:var(--text);
    }
    .article-content p{margin:0 0 20px}
    .article-content a{
      color:var(--primary);
      text-decoration:none;
      background:linear-gradient(90deg,rgba(22,242,165,.55),rgba(36,224,255,.55)) left bottom/100% 1px no-repeat;
      padding-bottom:2px;
    }
    .article-content a:hover{
      color:#8fffd6;
      background-size:100% 2px;
    }
    .article-content ul,.article-content ol{
      margin:0 0 22px;
      padding-left:1.35em;
    }
    .article-content li{margin:8px 0}
    .article-content blockquote{
      margin:28px 0;
      padding:18px 20px 18px 22px;
      border-left:4px solid var(--primary);
      border-radius:0 var(--radius) var(--radius) 0;
      background:rgba(22,242,165,.07);
      color:var(--muted);
    }
    .article-content img{
      margin:28px auto;
      border-radius:18px;
      border:1px solid rgba(174,183,194,.14);
      box-shadow:0 16px 42px rgba(0,0,0,.28);
    }
    .article-content figure{margin:30px 0}
    .article-content figcaption{
      color:var(--weak);
      font-size:14px;
      text-align:center;
      margin-top:10px;
    }
    .article-content table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      margin:26px 0;
      min-width:640px;
      color:var(--muted);
      background:#101519;
      border:1px solid rgba(174,183,194,.14);
      border-radius:16px;
      overflow:hidden;
    }
    .article-content th,.article-content td{
      padding:13px 15px;
      border-bottom:1px solid rgba(174,183,194,.12);
      vertical-align:top;
    }
    .article-content th{
      color:var(--text);
      background:rgba(22,242,165,.08);
      font-weight:900;
    }
    .article-content tr:last-child td{border-bottom:0}
    .article-content pre{
      overflow:auto;
      padding:18px;
      border-radius:18px;
      border:1px solid rgba(174,183,194,.14);
      background:#090d10;
      color:#cce8df;
    }
    .article-content code{
      color:#9fffdc;
      background:rgba(22,242,165,.09);
      padding:.12em .36em;
      border-radius:8px;
    }
    .table-responsive-dark{overflow-x:auto}
    .empty-card{
      padding:46px 26px;
      text-align:center;
      color:var(--muted);
    }
    .empty-icon{
      width:68px;
      height:68px;
      margin:0 auto 18px;
      border-radius:22px;
      border:1px solid rgba(22,242,165,.32);
      background:rgba(22,242,165,.08);
      display:grid;
      place-items:center;
      color:var(--primary);
      font-size:30px;
      box-shadow:var(--glow);
    }
    .empty-card h2{font-size:28px;margin:0 0 10px;font-weight:930;color:var(--text)}
    .empty-card p{margin:0 auto 22px;max-width:520px}

    .article-sidebar{
      position:sticky;
      top:calc(var(--nav-h) + 22px);
      display:grid;
      gap:18px;
    }
    .side-card{
      padding:22px;
      border-radius:22px;
    }
    .side-card h2,.side-card h3{
      font-size:18px;
      margin:0 0 14px;
      font-weight:930;
    }
    .side-note{
      color:var(--muted);
      font-size:14px;
      margin:0 0 16px;
    }
    .side-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:12px;
    }
    .side-list li{
      display:flex;
      gap:10px;
      color:var(--muted);
      font-size:14px;
      padding:12px;
      border-radius:14px;
      background:rgba(8,11,13,.32);
      border:1px solid rgba(174,183,194,.1);
    }
    .side-list b{
      color:var(--primary);
      font-weight:950;
    }
    .mini-progress{
      height:9px;
      border-radius:999px;
      overflow:hidden;
      background:rgba(174,183,194,.12);
      border:1px solid rgba(174,183,194,.12);
      margin:10px 0 14px;
    }
    .mini-progress span{
      display:block;
      height:100%;
      width:72%;
      background:linear-gradient(90deg,var(--primary),var(--primary-2));
      box-shadow:0 0 20px rgba(22,242,165,.38);
    }

    .related-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:24px;
    }
    .related-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:20px;
    }
    .related-stack{display:grid;gap:16px}
    .related-card{
      padding:22px;
      border-radius:22px;
      transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
    }
    .related-card:hover{
      transform:translateY(-4px);
      border-color:rgba(22,242,165,.4);
      box-shadow:0 24px 64px rgba(0,0,0,.38),0 0 28px rgba(22,242,165,.1);
      background:linear-gradient(180deg,rgba(25,33,39,.96),rgba(14,19,23,.96));
    }
    .related-card.large{
      min-height:260px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      background:
        radial-gradient(circle at 18% 20%,rgba(22,242,165,.13),transparent 34%),
        linear-gradient(180deg,rgba(23,29,35,.96),rgba(14,19,23,.96));
    }
    .related-card h3{
      font-size:clamp(20px,2.2vw,28px);
      line-height:1.32;
      margin:12px 0;
      font-weight:930;
      letter-spacing:-.035em;
    }
    .related-card p{color:var(--muted);margin:0 0 18px}
    .card-arrow{
      color:var(--primary);
      font-weight:950;
      display:inline-flex;
      align-items:center;
      gap:8px;
    }
    .card-arrow span{transition:transform .22s ease}
    .related-card:hover .card-arrow span{transform:translateX(5px)}

    .faq-shell{
      padding:10px;
      overflow:hidden;
    }
    .accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent;--bs-accordion-btn-focus-box-shadow:none}
    .accordion-item{
      background:rgba(16,21,25,.82);
      border:1px solid rgba(174,183,194,.12)!important;
      border-radius:18px!important;
      overflow:hidden;
      margin:10px;
    }
    .accordion-button{
      background:transparent!important;
      color:var(--text)!important;
      font-weight:900;
      padding:18px 20px;
      box-shadow:none!important;
      border-left:3px solid transparent;
    }
    .accordion-button:not(.collapsed){
      color:var(--primary)!important;
      border-left-color:var(--primary);
      background:rgba(22,242,165,.06)!important;
    }
    .accordion-button:after{
      filter:invert(1) brightness(2);
      opacity:.8;
      transition:transform .22s ease;
    }
    .accordion-body{
      color:var(--muted);
      padding:0 20px 20px 23px;
    }

    .cta-band{
      position:relative;
      overflow:hidden;
      padding:42px;
      display:grid;
      grid-template-columns:minmax(0,1fr) auto;
      gap:24px;
      align-items:center;
      border-color:rgba(22,242,165,.24);
      background:
        linear-gradient(115deg,rgba(22,242,165,.12),transparent 42%),
        radial-gradient(circle at 82% 20%,rgba(36,224,255,.14),transparent 34%),
        #11171c;
      clip-path:polygon(0 0,96% 0,100% 16%,100% 100%,4% 100%,0 84%);
    }
    .cta-band:before{
      content:"";
      position:absolute;
      inset:0;
      background:repeating-linear-gradient(90deg,rgba(255,255,255,.035) 0 1px,transparent 1px 22px);
      opacity:.45;
      pointer-events:none;
    }
    .cta-band > *{position:relative;z-index:1}
    .cta-band h2{
      font-size:clamp(26px,3vw,38px);
      line-height:1.22;
      margin:0 0 10px;
      font-weight:950;
      letter-spacing:-.04em;
    }
    .cta-band p{color:var(--muted);margin:0;max-width:760px}

    .site-footer{
      margin-top:86px;
      padding:56px 0 24px;
      background:linear-gradient(180deg,rgba(11,15,18,.6),#07090b);
      border-top:1px solid rgba(174,183,194,.12);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.35fr .7fr .8fr;
      gap:32px;
      padding-bottom:32px;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-size:20px;
      font-weight:950;
      letter-spacing:-.03em;
      margin-bottom:14px;
    }
    .footer-text{
      color:var(--muted);
      margin:0;
      max-width:560px;
    }
    .footer-title{
      font-size:16px;
      font-weight:930;
      margin:0 0 14px;
      color:var(--text);
    }
    .footer-links{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:9px;
    }
    .footer-links a{
      color:var(--muted);
      font-weight:750;
    }
    .footer-links a:hover{color:var(--primary);transform:translateX(2px)}
    .copyright{
      border-top:1px solid rgba(174,183,194,.12);
      padding-top:20px;
      color:var(--weak);
      font-size:14px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
    }
    .copyright a{color:var(--muted)}
    .copyright a:hover{color:var(--primary)}

    @media (max-width:1199px){
      :root{--container:1080px}
      .hero-grid{grid-template-columns:minmax(0,1fr) 300px}
      .article-layout{grid-template-columns:minmax(0,1fr) 300px}
    }
    @media (max-width:991px){
      :root{--nav-h:66px}
      .navbar{padding:10px 0}
      .navbar-brand{max-width:78%;font-size:16px}
      .navbar-collapse{
        margin-top:12px;
        padding:14px;
        border:1px solid rgba(174,183,194,.14);
        border-radius:18px;
        background:#0e1317;
        box-shadow:var(--shadow);
      }
      .navbar-nav{align-items:stretch!important}
      .nav-tools{
        margin-left:0;
        margin-top:12px;
        flex-direction:column;
        align-items:stretch;
      }
      .nav-tools .btn-neon{width:100%}
      .lang-pill{width:max-content}
      .hero-grid,.article-layout,.related-grid,.footer-grid,.cta-band{
        grid-template-columns:1fr;
      }
      .article-sidebar{position:static}
      .hero-console{max-width:520px}
      .related-head{align-items:flex-start;flex-direction:column}
      .section-pad{padding:70px 0}
    }
    @media (max-width:767px){
      .site-container{width:min(100% - 24px,var(--container))}
      .article-hero{padding:36px 0 34px}
      .article-title{font-size:32px;letter-spacing:-.04em}
      .article-card{padding:24px 18px;border-radius:22px}
      .article-content{font-size:16px;line-height:1.82}
      .summary-panel{padding:16px 16px 16px 18px}
      .hero-console{padding:18px;border-radius:22px}
      .count-ring{width:124px;height:124px}
      .count-ring strong{font-size:29px}
      .cta-band{padding:30px 22px;clip-path:none;border-radius:24px}
      .btn-neon,.btn-ghost,.btn-darkline{width:100%;min-height:48px}
      .footer-grid{gap:24px}
      .copyright{align-items:flex-start;flex-direction:column}
    }
    @media (max-width:480px){
      .logo-mark{width:38px;height:38px;flex-basis:38px;border-radius:13px}
      .logo-mark:after{left:14px;top:10px}
      .navbar-brand{gap:10px}
      .article-meta{gap:8px}
      .badge-soft,.badge-primary,.badge-purple,.badge-amber{font-size:12px}
      .side-card,.related-card{padding:18px}
      .section-pad{padding:58px 0}
      .footer-brand{font-size:18px}
    }

/* 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}