/* roulang page: index */
:root{
      --brand:#2563eb;
      --brand-dark:#1d4ed8;
      --brand-soft:#eff6ff;
      --brand-weak:#dbeafe;
      --accent:#0ea5e9;
      --accent-soft:#e0f2fe;
      --bg:#f6f9fc;
      --bg-2:#f8fafd;
      --surface:#ffffff;
      --surface-soft:#fbfdff;
      --text:#111827;
      --text-2:#334155;
      --muted:#64748b;
      --muted-2:#94a3b8;
      --border:#e5eaf1;
      --border-strong:#cbd5e1;
      --shadow:0 16px 40px rgba(15,23,42,.06);
      --shadow-hover:0 22px 56px rgba(37,99,235,.12);
      --radius:22px;
      --radius-sm:14px;
      --radius-lg:30px;
      --container:1180px;
      --nav-h:74px;
      --ease:all .24s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 18% 6%, rgba(56,189,248,.16), transparent 30%),
        radial-gradient(circle at 88% 14%, rgba(37,99,235,.11), transparent 34%),
        linear-gradient(180deg,var(--bg-2),var(--bg) 44%,#fff);
      line-height:1.72;
      padding-bottom:112px;
      text-rendering:optimizeLegibility;
    }

    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--brand)}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:var(--brand-weak);color:var(--brand-dark)}
    .container-page{width:min(100% - 40px,var(--container));margin-inline:auto}
    .section{padding:88px 0}
    .section-tight{padding:66px 0}
    .section-head{max-width:760px;margin-bottom:34px}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:var(--brand);
      background:var(--brand-soft);
      border:1px solid var(--brand-weak);
      font-size:14px;
      font-weight:700;
      letter-spacing:.02em;
      margin-bottom:14px;
    }
    .eyebrow i{font-size:15px}
    .section-title{
      font-size:clamp(28px,3.2vw,40px);
      line-height:1.18;
      font-weight:850;
      letter-spacing:-.03em;
      margin:0 0 14px;
      color:var(--text);
    }
    .section-desc{
      color:var(--muted);
      font-size:17px;
      margin:0;
      max-width:720px;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1030;
      background:rgba(255,255,255,.88);
      backdrop-filter:saturate(160%) blur(18px);
      border-bottom:1px solid rgba(229,234,241,.9);
    }
    .navbar{min-height:var(--nav-h);padding:0}
    .brand-mark{
      display:inline-flex;
      align-items:center;
      gap:10px;
      font-size:22px;
      font-weight:900;
      letter-spacing:-.02em;
      color:var(--text);
    }
    .brand-dot{
      width:30px;height:30px;border-radius:50%;
      background:linear-gradient(135deg,var(--brand),var(--accent));
      position:relative;
      box-shadow:0 10px 24px rgba(37,99,235,.22);
    }
    .brand-dot:after{
      content:"";
      position:absolute;
      width:11px;height:3px;border-radius:999px;
      background:#fff;
      top:14px;left:9px;
      transform:rotate(-22deg);
    }
    .navbar-toggler{
      border:1px solid var(--border);
      border-radius:12px;
      padding:8px 10px;
      box-shadow:none!important;
    }
    .navbar-toggler:focus{outline:3px solid rgba(37,99,235,.14)}
    .nav-menu{gap:10px;align-items:center}
    .nav-link{
      color:var(--text-2);
      font-weight:700;
      font-size:15px;
      padding:10px 12px!important;
      border-radius:999px;
      position:relative;
    }
    .nav-link:hover,.nav-link:focus{color:var(--brand);background:var(--brand-soft)}
    .nav-link.active{color:var(--brand)}
    .nav-link.active:after{
      content:"";
      position:absolute;
      left:50%;
      bottom:5px;
      width:18px;height:2px;
      border-radius:99px;
      transform:translateX(-50%);
      background:var(--brand);
    }

    .btn{
      border-radius:999px;
      font-weight:800;
      padding:12px 20px;
      border:1px solid transparent;
      transition:var(--ease);
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      line-height:1.2;
      box-shadow:none;
    }
    .btn:focus-visible{
      outline:4px solid rgba(37,99,235,.16);
      outline-offset:2px;
    }
    .btn-primary-soft{
      background:var(--brand);
      color:#fff;
      box-shadow:0 14px 28px rgba(37,99,235,.22);
    }
    .btn-primary-soft:hover{
      background:var(--brand-dark);
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 18px 38px rgba(37,99,235,.28);
    }
    .btn-outline-soft{
      background:#fff;
      border-color:var(--border-strong);
      color:var(--text-2);
    }
    .btn-outline-soft:hover{
      background:var(--brand-soft);
      border-color:#bfdbfe;
      color:var(--brand-dark);
      transform:translateY(-2px);
    }
    .btn-ghost{
      padding:10px 14px;
      color:var(--brand);
      background:transparent;
    }
    .btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark)}
    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 10px;
      border-radius:999px;
      color:var(--brand);
      background:var(--brand-soft);
      border:1px solid var(--brand-weak);
      font-size:13px;
      font-weight:800;
      white-space:nowrap;
    }

    .hero{
      min-height:650px;
      display:flex;
      align-items:center;
      padding:64px 0 42px;
      position:relative;
      overflow:hidden;
    }
    .hero-stage{
      width:100%;
      border:1px solid rgba(203,213,225,.86);
      border-radius:36px;
      background:
        linear-gradient(135deg,rgba(255,255,255,.94),rgba(239,246,255,.76)),
        radial-gradient(circle at 10% 30%,rgba(14,165,233,.14),transparent 28%);
      box-shadow:0 28px 90px rgba(15,23,42,.08);
      padding:42px;
      position:relative;
      overflow:hidden;
    }
    .hero-stage:before{
      content:"";
      position:absolute;
      inset:0;
      background-image:
        linear-gradient(rgba(37,99,235,.055) 1px,transparent 1px),
        linear-gradient(90deg,rgba(37,99,235,.055) 1px,transparent 1px);
      background-size:36px 36px;
      mask-image:linear-gradient(90deg,rgba(0,0,0,.45),transparent 72%);
      pointer-events:none;
    }
    .hero-content{position:relative;z-index:2;max-width:920px;margin:auto;text-align:center}
    .hero-kicker{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:8px 14px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:0 8px 22px rgba(15,23,42,.05);
      color:var(--brand);
      font-weight:850;
      font-size:14px;
      margin-bottom:22px;
    }
    .hero h1{
      font-size:clamp(32px,5vw,56px);
      line-height:1.12;
      font-weight:900;
      letter-spacing:-.045em;
      margin:0 0 20px;
      color:var(--text);
    }
    .hero .lead{
      max-width:790px;
      margin:0 auto 28px;
      color:var(--text-2);
      font-size:clamp(17px,1.6vw,20px);
      line-height:1.85;
    }
    .hero-actions{
      display:flex;
      justify-content:center;
      flex-wrap:wrap;
      gap:14px;
      margin-bottom:28px;
    }
    .countdown-strip{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      max-width:840px;
      margin:0 auto 30px;
      padding:14px 18px;
      border-radius:22px;
      background:rgba(255,255,255,.9);
      border:1px solid var(--border);
      box-shadow:0 14px 34px rgba(15,23,42,.06);
    }
    .countdown-copy{display:flex;align-items:center;gap:10px;color:var(--text-2);font-weight:800;text-align:left}
    .countdown-copy i{color:var(--accent);font-size:20px}
    .countdown-boxes{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
    .time-box{
      min-width:58px;
      padding:8px 10px;
      border-radius:14px;
      background:var(--brand-soft);
      border:1px solid var(--brand-weak);
      text-align:center;
    }
    .time-box strong{display:block;font-size:20px;line-height:1;color:var(--brand-dark)}
    .time-box span{font-size:12px;color:var(--muted);font-weight:700}
    .hero-metrics{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
      position:relative;
      z-index:2;
    }
    .metric-pill{
      background:rgba(255,255,255,.86);
      border:1px solid var(--border);
      border-radius:20px;
      padding:18px;
      text-align:left;
      box-shadow:0 12px 28px rgba(15,23,42,.05);
    }
    .metric-pill strong{
      display:block;
      color:var(--text);
      font-size:22px;
      line-height:1.1;
      margin-bottom:8px;
      letter-spacing:-.02em;
    }
    .metric-pill span{color:var(--muted);font-size:14px;font-weight:650}

    .progress-wrap{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:34px;
      box-shadow:var(--shadow);
    }
    .progress-top{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:24px;
      margin-bottom:24px;
    }
    .progress-number{
      min-width:230px;
      text-align:right;
    }
    .progress-number strong{
      display:block;
      font-size:42px;
      line-height:1;
      color:var(--brand);
      letter-spacing:-.04em;
    }
    .progress-number span{color:var(--muted);font-weight:700}
    .custom-progress{
      height:14px;
      border-radius:999px;
      background:#eaf1fb;
      overflow:hidden;
      margin-bottom:20px;
    }
    .custom-progress span{
      display:block;
      height:100%;
      width:72%;
      border-radius:999px;
      background:linear-gradient(90deg,var(--brand),var(--accent));
      box-shadow:0 8px 18px rgba(37,99,235,.18);
    }
    .progress-steps{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:12px;
    }
    .progress-step{
      padding:16px;
      border-radius:18px;
      background:var(--surface-soft);
      border:1px solid var(--border);
    }
    .progress-step b{display:block;margin-bottom:4px;color:var(--text-2)}
    .progress-step span{color:var(--muted);font-size:14px}

    .reward-grid{
      display:grid;
      grid-template-columns:1.15fr .85fr .85fr;
      gap:18px;
      align-items:stretch;
    }
    .reward-card,.feature-card,.quote-card,.security-card,.news-card,.timeline-card,.member-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      transition:var(--ease);
    }
    .reward-card:hover,.feature-card:hover,.quote-card:hover,.security-card:hover,.news-card:hover,.timeline-card:hover,.member-card:hover{
      transform:translateY(-3px);
      border-color:#bfdbfe;
      box-shadow:var(--shadow-hover);
    }
    .reward-card{padding:30px;position:relative;overflow:hidden}
    .reward-card.featured{
      background:linear-gradient(180deg,#fff,var(--brand-soft));
      border-color:#bfdbfe;
    }
    .reward-card .price{
      font-size:38px;
      font-weight:900;
      color:var(--text);
      letter-spacing:-.04em;
      margin:10px 0 8px;
    }
    .reward-card .price small{font-size:15px;color:var(--muted);font-weight:700}
    .reward-card h3{font-size:22px;font-weight:850;margin:0 0 8px}
    .reward-card p{color:var(--muted);margin:0 0 18px}
    .check-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}
    .check-list li{display:flex;gap:9px;color:var(--text-2);font-weight:650}
    .check-list i{color:var(--accent);margin-top:3px}

    .supporter-wall{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
    }
    .quote-card{padding:28px;position:relative}
    .quote-card:before{
      content:"“";
      position:absolute;
      right:24px;
      top:10px;
      font-size:72px;
      line-height:1;
      color:rgba(37,99,235,.09);
      font-family:Georgia,serif;
    }
    .quote-card p{font-size:17px;color:var(--text-2);margin:0 0 18px;position:relative}
    .quote-meta{display:flex;align-items:center;justify-content:space-between;gap:14px;color:var(--muted);font-size:14px}
    .quote-avatar{
      width:38px;height:38px;border-radius:50%;
      background:linear-gradient(135deg,var(--brand-weak),var(--accent-soft));
      display:inline-flex;align-items:center;justify-content:center;
      color:var(--brand);font-weight:900;
      margin-right:9px;
    }
    .support-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:20px;
    }

    .feature-strip{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .feature-card{padding:26px}
    .feature-icon{
      width:46px;height:46px;border-radius:16px;
      background:var(--brand-soft);
      color:var(--brand);
      display:flex;align-items:center;justify-content:center;
      font-size:22px;
      margin-bottom:18px;
      transition:var(--ease);
    }
    .feature-card:hover .feature-icon{background:var(--brand);color:#fff}
    .feature-card h3{font-size:21px;font-weight:850;margin:0 0 10px}
    .feature-card p{color:var(--muted);margin:0}

    .timeline-shell{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:26px;
      align-items:start;
    }
    .timeline-panel{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:32px;
      box-shadow:var(--shadow);
    }
    .timeline-list{display:grid;gap:14px}
    .timeline-card{padding:20px;display:grid;grid-template-columns:88px 1fr;gap:18px}
    .timeline-time{
      color:var(--brand);
      font-weight:900;
      font-size:15px;
      padding-top:2px;
    }
    .timeline-card h3{font-size:18px;font-weight:850;margin:0 0 6px}
    .timeline-card p{margin:0;color:var(--muted)}
    .demo-board{
      border-radius:26px;
      border:1px solid var(--border);
      background:linear-gradient(180deg,#fff,#f8fbff);
      padding:22px;
      box-shadow:var(--shadow);
    }
    .board-row{
      display:flex;
      align-items:center;
      gap:12px;
      padding:15px;
      border-radius:18px;
      background:#fff;
      border:1px solid var(--border);
      margin-bottom:12px;
    }
    .board-row:last-child{margin-bottom:0}
    .board-dot{width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 6px var(--accent-soft)}
    .board-line{height:9px;border-radius:999px;background:#eaf1fb;flex:1;overflow:hidden}
    .board-line span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--brand),var(--accent))}
    .board-label{min-width:70px;color:var(--text-2);font-weight:800;font-size:14px;text-align:right}

    .security-grid,.member-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .security-card,.member-card{padding:24px}
    .security-card i,.member-card i{
      width:44px;height:44px;border-radius:16px;
      background:var(--accent-soft);
      color:var(--accent);
      display:flex;align-items:center;justify-content:center;
      font-size:22px;
      margin-bottom:15px;
    }
    .security-card h3,.member-card h3{font-size:18px;font-weight:850;margin:0 0 8px}
    .security-card p,.member-card p{margin:0;color:var(--muted);font-size:15px}

    .news-layout{
      display:grid;
      grid-template-columns:.36fr .64fr;
      gap:28px;
      align-items:start;
    }
    .news-aside{
      position:sticky;
      top:100px;
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:30px;
      box-shadow:var(--shadow);
    }
    .news-list{display:grid;gap:14px}
    .news-card{
      padding:22px 24px;
      display:grid;
      grid-template-columns:1fr auto;
      gap:16px;
      align-items:center;
    }
    .news-card h3{
      font-size:20px;
      line-height:1.35;
      font-weight:850;
      margin:0 0 8px;
      transition:var(--ease);
    }
    .news-card:hover h3{color:var(--brand)}
    .news-card p{
      margin:0;
      color:var(--muted);
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .news-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:16px;
      align-items:center;
      color:var(--muted-2);
      font-size:13px;
      font-weight:750;
    }
    .news-arrow{
      width:42px;height:42px;border-radius:50%;
      background:var(--brand-soft);
      color:var(--brand);
      display:flex;align-items:center;justify-content:center;
      transition:var(--ease);
    }
    .news-card:hover .news-arrow{background:var(--brand);color:#fff;transform:translateX(3px)}
    .empty-state{
      padding:38px;
      text-align:center;
      background:#fff;
      border:1px dashed #bfdbfe;
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
    }
    .empty-state i{
      width:54px;height:54px;border-radius:20px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:var(--brand-soft);
      color:var(--brand);
      font-size:26px;
      margin-bottom:14px;
    }
    .empty-state p{margin:0 0 16px;color:var(--muted)}

    .support-cta{
      border-radius:34px;
      padding:42px;
      background:
        linear-gradient(135deg,rgba(37,99,235,.94),rgba(14,165,233,.84)),
        radial-gradient(circle at 20% 30%,rgba(255,255,255,.25),transparent 30%);
      color:#fff;
      box-shadow:0 30px 76px rgba(37,99,235,.24);
      overflow:hidden;
      position:relative;
    }
    .support-cta:after{
      content:"";
      position:absolute;
      width:360px;height:360px;border-radius:50%;
      right:-160px;top:-170px;
      background:rgba(255,255,255,.16);
    }
    .support-cta .row{position:relative;z-index:2}
    .support-cta h2{
      font-size:clamp(28px,3.2vw,42px);
      line-height:1.18;
      font-weight:900;
      letter-spacing:-.035em;
      margin:0 0 14px;
    }
    .support-cta p{margin:0;color:rgba(255,255,255,.86);font-size:17px}
    .support-cta .btn-light{
      color:var(--brand);
      font-weight:900;
      border:none;
      box-shadow:0 16px 34px rgba(15,23,42,.15);
    }
    .support-cta .btn-light:hover{transform:translateY(-2px);color:var(--brand-dark)}
    .support-cta .btn-outline-light{
      border-color:rgba(255,255,255,.55);
      color:#fff;
      font-weight:850;
    }
    .support-cta .btn-outline-light:hover{
      background:rgba(255,255,255,.14);
      color:#fff;
      transform:translateY(-2px);
    }

    .accordion{display:grid;gap:12px}
    .accordion-item{
      border:1px solid var(--border)!important;
      border-radius:20px!important;
      overflow:hidden;
      background:#fff;
      box-shadow:0 12px 28px rgba(15,23,42,.045);
    }
    .accordion-button{
      padding:20px 24px;
      color:var(--text);
      font-weight:850;
      font-size:17px;
      background:#fff;
      box-shadow:none!important;
    }
    .accordion-button:not(.collapsed){
      color:var(--brand-dark);
      background:var(--brand-soft);
      border-bottom:1px solid var(--brand-weak);
    }
    .accordion-button:focus{box-shadow:none;outline:3px solid rgba(37,99,235,.12);outline-offset:-3px}
    .accordion-button::after{
      background-image:none;
      content:"+";
      font-weight:900;
      color:var(--brand);
      display:flex;
      align-items:center;
      justify-content:center;
      transform:none;
    }
    .accordion-button:not(.collapsed)::after{content:"−";transform:none}
    .accordion-body{padding:20px 24px;color:var(--muted);line-height:1.85}

    .contact-panel{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:34px;
      box-shadow:var(--shadow);
    }
    .form-control{
      border:1px solid var(--border);
      border-radius:16px;
      padding:13px 15px;
      background:#fbfdff;
      color:var(--text);
    }
    .form-control:focus{
      border-color:#93c5fd;
      box-shadow:0 0 0 4px rgba(37,99,235,.11);
      background:#fff;
    }
    .form-text{color:var(--muted);font-size:13px}

    .floating-cta{
      position:fixed;
      z-index:1040;
      left:50%;
      bottom:18px;
      transform:translateX(-50%);
      width:min(calc(100% - 32px),980px);
      background:rgba(255,255,255,.94);
      backdrop-filter:blur(18px) saturate(160%);
      border:1px solid rgba(203,213,225,.95);
      border-radius:24px;
      box-shadow:0 20px 58px rgba(15,23,42,.14);
      padding:12px;
    }
    .floating-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
    }
    .floating-copy{
      display:flex;
      align-items:center;
      gap:12px;
      color:var(--text-2);
      font-weight:800;
      padding-left:8px;
    }
    .floating-copy i{
      width:38px;height:38px;border-radius:14px;
      display:flex;align-items:center;justify-content:center;
      background:var(--brand-soft);
      color:var(--brand);
      font-size:19px;
    }
    .floating-actions{display:flex;gap:10px;flex-shrink:0}

    .site-footer{
      padding:54px 0 34px;
      border-top:1px solid var(--border);
      background:linear-gradient(180deg,#fff,#f8fbff);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr .8fr .8fr;
      gap:28px;
      align-items:start;
    }
    .footer-desc{color:var(--muted);margin:16px 0 0;max-width:460px}
    .footer-title{font-size:15px;font-weight:900;color:var(--text);margin-bottom:12px}
    .footer-links{list-style:none;padding:0;margin:0;display:grid;gap:8px}
    .footer-links a{color:var(--muted);font-weight:650}
    .footer-links a:hover{color:var(--brand);padding-left:3px}
    .copyright{
      margin-top:34px;
      padding-top:22px;
      border-top:1px solid var(--border);
      color:var(--muted-2);
      font-size:14px;
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
    }

    @media (max-width:1199.98px){
      .hero-stage{padding:34px}
      .reward-grid{grid-template-columns:1fr 1fr}
      .reward-card.featured{grid-column:1/-1}
      .security-grid,.member-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:991.98px){
      body{padding-bottom:138px}
      .navbar-collapse{
        margin-top:12px;
        padding:14px;
        border:1px solid var(--border);
        border-radius:20px;
        background:#fff;
        box-shadow:var(--shadow);
      }
      .nav-menu{align-items:stretch}
      .nav-link.active:after{display:none}
      .section{padding:68px 0}
      .hero{min-height:auto;padding:44px 0 24px}
      .hero-metrics{grid-template-columns:repeat(2,1fr)}
      .progress-top{display:block}
      .progress-number{text-align:left;margin-top:18px}
      .progress-steps{grid-template-columns:repeat(2,1fr)}
      .timeline-shell,.news-layout{grid-template-columns:1fr}
      .news-aside{position:static}
      .feature-strip{grid-template-columns:1fr}
      .supporter-wall{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:767.98px){
      .container-page{width:min(100% - 28px,var(--container))}
      .hero-stage{border-radius:26px;padding:26px 18px}
      .countdown-strip{display:block;text-align:center}
      .countdown-copy{justify-content:center;text-align:center;margin-bottom:12px}
      .countdown-boxes{justify-content:center}
      .metric-pill{padding:15px}
      .hero-actions .btn{width:100%}
      .progress-wrap,.timeline-panel,.contact-panel,.support-cta{padding:24px;border-radius:26px}
      .reward-grid,.security-grid,.member-grid,.progress-steps{grid-template-columns:1fr}
      .news-card{grid-template-columns:1fr}
      .news-arrow{display:none}
      .timeline-card{grid-template-columns:1fr;gap:8px}
      .footer-grid{grid-template-columns:1fr}
      .floating-inner{align-items:stretch;flex-direction:column}
      .floating-copy{font-size:14px;padding-left:0}
      .floating-actions{display:grid;grid-template-columns:1fr 1fr}
      .floating-actions .btn{padding:11px 12px}
    }
    @media (max-width:479.98px){
      body{padding-bottom:160px}
      .hero-metrics{grid-template-columns:1fr}
      .countdown-boxes{display:grid;grid-template-columns:repeat(2,1fr)}
      .time-box{min-width:0}
      .floating-actions{grid-template-columns:1fr}
      .brand-mark{font-size:20px}
    }

/* roulang page: article */
:root{
      --brand:#2563eb;
      --brand-dark:#1d4ed8;
      --brand-soft:#eff6ff;
      --brand-weak:#dbeafe;
      --accent:#0ea5e9;
      --accent-soft:#e0f2fe;
      --bg:#f6f9fc;
      --bg-2:#f8fafd;
      --surface:#ffffff;
      --surface-soft:#fbfdff;
      --text:#111827;
      --text-2:#334155;
      --muted:#64748b;
      --muted-2:#94a3b8;
      --border:#e5eaf1;
      --border-strong:#cbd5e1;
      --shadow:0 16px 40px rgba(15,23,42,.06);
      --shadow-hover:0 22px 56px rgba(37,99,235,.12);
      --radius:22px;
      --radius-sm:14px;
      --radius-lg:30px;
      --container:1180px;
      --nav-h:74px;
      --ease:all .24s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 18% 4%, rgba(56,189,248,.16), transparent 30%),
        radial-gradient(circle at 88% 9%, rgba(37,99,235,.11), transparent 34%),
        linear-gradient(180deg,var(--bg-2),var(--bg) 42%,#fff);
      line-height:1.72;
      padding-bottom:112px;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--brand)}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:var(--brand-weak);color:var(--brand-dark)}

    .container-page{width:min(100% - 40px,var(--container));margin-inline:auto}
    .section{padding:88px 0}
    .section-tight{padding:66px 0}
    .section-head{max-width:760px;margin-bottom:34px}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:var(--brand);
      background:var(--brand-soft);
      border:1px solid var(--brand-weak);
      font-size:14px;
      font-weight:800;
      letter-spacing:.02em;
      margin-bottom:14px;
    }
    .eyebrow i{font-size:15px}
    .section-title{
      font-size:clamp(28px,3.2vw,40px);
      line-height:1.18;
      font-weight:850;
      letter-spacing:-.03em;
      margin:0 0 14px;
      color:var(--text);
    }
    .section-desc{
      color:var(--muted);
      font-size:17px;
      margin:0;
      max-width:720px;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1030;
      background:rgba(255,255,255,.88);
      backdrop-filter:saturate(160%) blur(18px);
      border-bottom:1px solid rgba(229,234,241,.9);
    }
    .navbar{min-height:var(--nav-h);padding:0}
    .brand-mark{
      display:inline-flex;
      align-items:center;
      gap:10px;
      font-size:22px;
      font-weight:900;
      letter-spacing:-.02em;
      color:var(--text);
    }
    .brand-mark:hover{color:var(--text)}
    .brand-dot{
      width:30px;height:30px;border-radius:50%;
      background:linear-gradient(135deg,var(--brand),var(--accent));
      position:relative;
      box-shadow:0 10px 24px rgba(37,99,235,.22);
      flex:0 0 auto;
    }
    .brand-dot:after{
      content:"";
      position:absolute;
      width:11px;height:3px;border-radius:999px;
      background:#fff;
      top:14px;left:9px;
      transform:rotate(-22deg);
    }
    .navbar-toggler{
      border:1px solid var(--border);
      border-radius:12px;
      padding:8px 10px;
      box-shadow:none!important;
      background:#fff;
    }
    .navbar-toggler:focus{outline:3px solid rgba(37,99,235,.14)}
    .nav-menu{gap:10px;align-items:center}
    .nav-link{
      color:var(--text-2);
      font-weight:700;
      font-size:15px;
      padding:10px 12px!important;
      border-radius:999px;
      position:relative;
    }
    .nav-link:hover,.nav-link:focus{color:var(--brand);background:var(--brand-soft)}
    .nav-link.active{color:var(--brand)}
    .nav-link.active:after{
      content:"";
      position:absolute;
      left:50%;
      bottom:5px;
      width:18px;height:2px;
      border-radius:99px;
      transform:translateX(-50%);
      background:var(--brand);
    }

    .btn{
      border-radius:999px;
      font-weight:800;
      padding:12px 20px;
      border:1px solid transparent;
      transition:var(--ease);
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      line-height:1.2;
      box-shadow:none;
    }
    .btn:focus-visible{
      outline:4px solid rgba(37,99,235,.16);
      outline-offset:2px;
    }
    .btn-primary-soft{
      background:var(--brand);
      color:#fff;
      box-shadow:0 14px 28px rgba(37,99,235,.22);
    }
    .btn-primary-soft:hover{
      background:var(--brand-dark);
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 18px 38px rgba(37,99,235,.28);
    }
    .btn-outline-soft{
      background:#fff;
      border-color:var(--border-strong);
      color:var(--text-2);
    }
    .btn-outline-soft:hover{
      background:var(--brand-soft);
      border-color:#bfdbfe;
      color:var(--brand-dark);
      transform:translateY(-2px);
    }
    .btn-ghost{
      padding:10px 14px;
      color:var(--brand);
      background:transparent;
    }
    .btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark)}

    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 10px;
      border-radius:999px;
      color:var(--brand);
      background:var(--brand-soft);
      border:1px solid var(--brand-weak);
      font-size:13px;
      font-weight:800;
      white-space:nowrap;
    }
    .badge-muted{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 10px;
      border-radius:999px;
      color:var(--muted);
      background:#fff;
      border:1px solid var(--border);
      font-size:13px;
      font-weight:800;
      white-space:nowrap;
    }

    .article-hero{
      padding:46px 0 38px;
      position:relative;
      overflow:hidden;
    }
    .article-hero-card{
      border:1px solid rgba(203,213,225,.86);
      border-radius:36px;
      background:
        linear-gradient(135deg,rgba(255,255,255,.96),rgba(239,246,255,.78)),
        radial-gradient(circle at 12% 24%,rgba(14,165,233,.14),transparent 28%);
      box-shadow:0 28px 90px rgba(15,23,42,.08);
      padding:34px;
      position:relative;
      overflow:hidden;
    }
    .article-hero-card:before{
      content:"";
      position:absolute;
      inset:0;
      background-image:
        linear-gradient(rgba(37,99,235,.055) 1px,transparent 1px),
        linear-gradient(90deg,rgba(37,99,235,.055) 1px,transparent 1px);
      background-size:34px 34px;
      mask-image:linear-gradient(90deg,rgba(0,0,0,.38),transparent 72%);
      pointer-events:none;
    }
    .breadcrumb-line{
      position:relative;
      z-index:2;
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:8px;
      color:var(--muted);
      font-size:14px;
      font-weight:700;
      margin-bottom:22px;
    }
    .breadcrumb-line a{color:var(--muted)}
    .breadcrumb-line a:hover{color:var(--brand)}
    .breadcrumb-line .current{color:var(--brand)}
    .breadcrumb-sep{color:var(--muted-2);font-size:12px}

    .article-head-grid{
      position:relative;
      z-index:2;
      display:grid;
      grid-template-columns:minmax(0,1.12fr) 380px;
      gap:34px;
      align-items:stretch;
    }
    .article-labels{
      display:flex;
      gap:10px;
      align-items:center;
      flex-wrap:wrap;
      margin-bottom:18px;
    }
    .article-title{
      font-size:clamp(32px,4vw,48px);
      line-height:1.15;
      letter-spacing:-.04em;
      font-weight:900;
      color:var(--text);
      margin:0 0 18px;
      max-width:820px;
    }
    .article-summary{
      font-size:18px;
      color:var(--muted);
      margin:0 0 22px;
      max-width:780px;
    }
    .article-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px 16px;
      color:var(--muted);
      font-size:14px;
      font-weight:700;
    }
    .article-meta span{
      display:inline-flex;
      align-items:center;
      gap:7px;
    }
    .hero-preview{
      min-height:270px;
      border-radius:28px;
      background:#fff;
      border:1px solid rgba(203,213,225,.82);
      box-shadow:var(--shadow);
      padding:22px;
      position:relative;
      overflow:hidden;
    }
    .preview-top{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
      padding-bottom:16px;
      border-bottom:1px solid var(--border);
    }
    .preview-title{
      font-size:15px;
      font-weight:900;
      color:var(--text-2);
      margin:0;
    }
    .preview-pill{
      display:inline-flex;
      align-items:center;
      gap:6px;
      border-radius:999px;
      padding:6px 10px;
      background:var(--accent-soft);
      color:#0369a1;
      font-size:12px;
      font-weight:900;
      white-space:nowrap;
    }
    .preview-lines{
      padding:18px 0 8px;
      display:grid;
      gap:10px;
    }
    .preview-line{
      height:10px;
      border-radius:999px;
      background:linear-gradient(90deg,#dbeafe,#eff6ff);
    }
    .preview-line:nth-child(2){width:76%}
    .preview-line:nth-child(3){width:58%}
    .preview-stats{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
      margin-top:18px;
    }
    .preview-stat{
      border-radius:18px;
      background:var(--surface-soft);
      border:1px solid var(--border);
      padding:14px;
    }
    .preview-stat strong{
      display:block;
      color:var(--brand);
      font-size:24px;
      line-height:1;
      margin-bottom:5px;
    }
    .preview-stat span{
      color:var(--muted);
      font-size:13px;
      font-weight:700;
    }
    .full-visual{
      position:relative;
      z-index:2;
      margin-top:30px;
      border-radius:28px;
      background:
        linear-gradient(135deg,#ffffff 0%,#f8fbff 55%,#eff6ff 100%);
      border:1px solid var(--border);
      padding:22px;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:18px;
      box-shadow:var(--shadow);
    }
    .visual-panel{
      border-radius:22px;
      background:#fff;
      border:1px solid var(--border);
      padding:18px;
      min-height:142px;
    }
    .visual-panel h2{
      font-size:18px;
      margin:0 0 12px;
      font-weight:900;
      color:var(--text);
    }
    .visual-panel p{
      margin:0;
      color:var(--muted);
      font-size:15px;
    }
    .visual-steps{
      display:grid;
      gap:10px;
    }
    .visual-step{
      display:flex;
      gap:10px;
      align-items:flex-start;
      padding:12px;
      border-radius:18px;
      background:#fff;
      border:1px solid var(--border);
    }
    .visual-step i{
      color:var(--brand);
      background:var(--brand-soft);
      width:30px;
      height:30px;
      border-radius:12px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      flex:0 0 auto;
    }
    .visual-step span{
      color:var(--text-2);
      font-size:14px;
      font-weight:800;
    }

    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,820px) 300px;
      gap:36px;
      align-items:start;
      padding:34px 0 0;
    }
    .reading-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:30px;
      box-shadow:var(--shadow);
      padding:42px;
      overflow:hidden;
    }
    .pull-quote{
      margin:0 0 30px;
      padding:22px 24px;
      border-radius:22px;
      background:linear-gradient(135deg,var(--brand-soft),#fff);
      border:1px solid var(--brand-weak);
      position:relative;
      color:var(--text-2);
      font-size:18px;
      font-weight:800;
      line-height:1.75;
    }
    .pull-quote:before{
      content:"“";
      position:absolute;
      right:20px;
      top:-16px;
      color:rgba(37,99,235,.16);
      font-size:92px;
      line-height:1;
      font-family:Georgia,serif;
    }

    .article-body{
      font-size:17px;
      line-height:1.86;
      color:var(--text-2);
    }
    .article-body > *:first-child{margin-top:0}
    .article-body p{margin:0 0 20px}
    .article-body h2{
      font-size:clamp(24px,2.4vw,32px);
      line-height:1.28;
      letter-spacing:-.02em;
      margin:42px 0 16px;
      font-weight:900;
      color:var(--text);
      position:relative;
      padding-left:15px;
    }
    .article-body h2:before{
      content:"";
      position:absolute;
      left:0;
      top:.18em;
      width:4px;
      height:1.05em;
      border-radius:999px;
      background:var(--brand);
    }
    .article-body h3{
      font-size:22px;
      line-height:1.35;
      margin:34px 0 14px;
      font-weight:900;
      color:var(--text);
    }
    .article-body h4{
      font-size:19px;
      line-height:1.42;
      margin:28px 0 12px;
      font-weight:900;
      color:var(--text-2);
    }
    .article-body a{
      color:var(--brand);
      font-weight:800;
      text-decoration:underline;
      text-decoration-color:rgba(37,99,235,.24);
      text-underline-offset:4px;
    }
    .article-body a:hover{color:var(--brand-dark);text-decoration-color:var(--brand-dark)}
    .article-body blockquote{
      margin:28px 0;
      padding:22px 24px;
      border-left:4px solid var(--brand);
      background:var(--brand-soft);
      border-radius:0 20px 20px 0;
      color:var(--text-2);
      font-weight:700;
    }
    .article-body ul,.article-body ol{
      padding-left:1.35em;
      margin:18px 0 24px;
    }
    .article-body li{margin:8px 0}
    .article-body img{
      border-radius:18px;
      box-shadow:0 16px 36px rgba(15,23,42,.08);
      margin:28px auto;
      border:1px solid var(--border);
    }
    .article-body figure{margin:30px 0}
    .article-body figcaption{
      text-align:center;
      color:var(--muted);
      font-size:13px;
      margin-top:10px;
    }
    .article-body pre{
      background:#0f172a;
      color:#e5e7eb;
      border-radius:20px;
      padding:20px;
      overflow:auto;
      margin:26px 0;
      font-size:14px;
      line-height:1.72;
    }
    .article-body code{
      background:var(--brand-soft);
      color:var(--brand-dark);
      border-radius:8px;
      padding:.12em .38em;
      font-size:.92em;
    }
    .article-body pre code{
      background:transparent;
      color:inherit;
      padding:0;
    }
    .article-body table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      margin:26px 0;
      overflow:hidden;
      border:1px solid var(--border);
      border-radius:18px;
      display:block;
      max-width:100%;
      overflow-x:auto;
    }
    .article-body th,.article-body td{
      padding:14px 16px;
      border-bottom:1px solid var(--border);
      min-width:140px;
      vertical-align:top;
    }
    .article-body th{
      background:var(--brand-soft);
      color:var(--text);
      font-weight:900;
    }
    .article-body tr:last-child td{border-bottom:0}

    .empty-content{
      text-align:center;
      padding:54px 18px;
      border-radius:24px;
      background:var(--surface-soft);
      border:1px dashed var(--border-strong);
    }
    .empty-icon{
      width:64px;height:64px;
      margin:0 auto 18px;
      display:flex;
      align-items:center;
      justify-content:center;
      border-radius:22px;
      background:var(--brand-soft);
      color:var(--brand);
      font-size:30px;
    }
    .empty-content h2{
      margin:0 0 10px;
      padding:0;
      font-size:26px;
    }
    .empty-content h2:before{display:none}
    .empty-content p{color:var(--muted);margin:0 0 20px}

    .article-footer-actions{
      margin-top:34px;
      padding-top:28px;
      border-top:1px solid var(--border);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
    }
    .share-row{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:10px;
      color:var(--muted);
      font-size:14px;
      font-weight:800;
    }
    .share-chip{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:36px;height:36px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--border);
      color:var(--brand);
    }
    .share-chip:hover{
      background:var(--brand-soft);
      border-color:var(--brand-weak);
      transform:translateY(-2px);
    }

    .article-sidebar{
      position:sticky;
      top:calc(var(--nav-h) + 22px);
      display:grid;
      gap:18px;
    }
    .side-card{
      border-radius:24px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:var(--shadow);
      padding:22px;
    }
    .side-title{
      display:flex;
      align-items:center;
      gap:9px;
      margin:0 0 14px;
      color:var(--text);
      font-size:17px;
      font-weight:900;
    }
    .side-title i{color:var(--brand)}
    .toc-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:8px;
    }
    .toc-list a{
      display:flex;
      align-items:center;
      gap:9px;
      padding:10px 12px;
      border-radius:14px;
      color:var(--text-2);
      font-size:14px;
      font-weight:800;
      background:var(--surface-soft);
      border:1px solid transparent;
    }
    .toc-list a:before{
      content:"";
      width:6px;
      height:6px;
      border-radius:50%;
      background:var(--accent);
      flex:0 0 auto;
    }
    .toc-list a:hover{
      color:var(--brand);
      background:var(--brand-soft);
      border-color:var(--brand-weak);
      transform:translateX(2px);
    }
    .tag-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .side-card p{
      color:var(--muted);
      margin:0 0 16px;
      font-size:14px;
    }
    .mini-panel{
      border-radius:20px;
      background:linear-gradient(135deg,var(--brand-soft),#fff);
      border:1px solid var(--brand-weak);
      padding:16px;
    }
    .mini-panel strong{
      display:block;
      color:var(--text);
      font-size:18px;
      margin-bottom:5px;
    }
    .mini-panel span{
      color:var(--muted);
      font-size:13px;
      font-weight:700;
    }

    .recommend-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .info-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:24px;
      padding:24px;
      box-shadow:var(--shadow);
      transition:var(--ease);
      min-height:220px;
      display:flex;
      flex-direction:column;
    }
    .info-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-hover);
      border-color:#bfdbfe;
    }
    .info-card h3{
      font-size:20px;
      line-height:1.36;
      letter-spacing:-.01em;
      font-weight:900;
      margin:14px 0 10px;
      color:var(--text);
    }
    .info-card h3 a:hover{
      color:var(--brand);
      text-decoration:underline;
      text-underline-offset:5px;
      text-decoration-color:rgba(37,99,235,.28);
    }
    .info-card p{
      color:var(--muted);
      margin:0 0 18px;
      font-size:15px;
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .info-card-foot{
      margin-top:auto;
      padding-top:16px;
      border-top:1px solid var(--border);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      color:var(--muted);
      font-size:13px;
      font-weight:800;
    }
    .read-link{
      display:inline-flex;
      align-items:center;
      gap:6px;
      color:var(--brand);
      font-weight:900;
      white-space:nowrap;
    }
    .read-link:hover{gap:9px;color:var(--brand-dark)}

    .faq-wrap{
      max-width:930px;
      margin:0 auto;
    }
    .accordion{
      display:grid;
      gap:14px;
    }
    .accordion-item{
      border:1px solid var(--border)!important;
      border-radius:22px!important;
      overflow:hidden;
      background:#fff;
      box-shadow:0 12px 30px rgba(15,23,42,.04);
    }
    .accordion-button{
      padding:21px 24px;
      font-weight:900;
      color:var(--text);
      background:#fff!important;
      box-shadow:none!important;
      border-radius:22px!important;
    }
    .accordion-button:not(.collapsed){
      color:var(--brand);
      border-bottom:1px solid var(--border);
    }
    .accordion-button:focus{
      outline:3px solid rgba(37,99,235,.14);
      outline-offset:-3px;
    }
    .accordion-button::after{
      background-image:none;
      content:"+";
      display:flex;
      align-items:center;
      justify-content:center;
      width:28px;
      height:28px;
      border-radius:50%;
      background:var(--brand-soft);
      color:var(--brand);
      font-size:20px;
      font-weight:800;
      transform:none;
    }
    .accordion-button:not(.collapsed)::after{
      content:"−";
      background:var(--brand);
      color:#fff;
    }
    .accordion-body{
      padding:20px 24px 24px;
      color:var(--muted);
      font-size:16px;
    }

    .contact-section{
      padding:72px 0 88px;
    }
    .contact-card{
      border-radius:32px;
      background:
        linear-gradient(135deg,#fff,rgba(239,246,255,.86)),
        radial-gradient(circle at 92% 18%,rgba(14,165,233,.15),transparent 30%);
      border:1px solid var(--border);
      box-shadow:0 28px 80px rgba(15,23,42,.08);
      padding:34px;
      display:grid;
      grid-template-columns:1fr 430px;
      gap:32px;
      align-items:center;
    }
    .contact-card h2{
      font-size:clamp(28px,3vw,40px);
      line-height:1.18;
      font-weight:900;
      letter-spacing:-.03em;
      margin:0 0 14px;
    }
    .contact-card p{
      color:var(--muted);
      margin:0 0 22px;
      font-size:17px;
    }
    .contact-points{
      display:grid;
      gap:12px;
      margin-top:18px;
    }
    .contact-point{
      display:flex;
      align-items:flex-start;
      gap:10px;
      color:var(--text-2);
      font-weight:800;
    }
    .contact-point i{color:var(--brand);margin-top:2px}
    .form-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:24px;
      padding:22px;
      box-shadow:var(--shadow);
    }
    .form-label{
      color:var(--text-2);
      font-size:14px;
      font-weight:900;
      margin-bottom:7px;
    }
    .form-control,.form-select{
      border:1px solid var(--border-strong);
      border-radius:16px;
      padding:12px 14px;
      color:var(--text);
      background:var(--surface-soft);
      box-shadow:none!important;
    }
    .form-control:focus,.form-select:focus{
      border-color:var(--brand);
      background:#fff;
      outline:4px solid rgba(37,99,235,.12);
    }
    .form-hint{
      color:var(--muted);
      font-size:12px;
      margin-top:10px;
    }

    .fixed-cta{
      position:fixed;
      left:50%;
      bottom:18px;
      transform:translateX(-50%);
      z-index:1040;
      width:min(100% - 32px,980px);
      border:1px solid rgba(203,213,225,.9);
      border-radius:26px;
      background:rgba(255,255,255,.94);
      backdrop-filter:saturate(160%) blur(18px);
      box-shadow:0 20px 60px rgba(15,23,42,.14);
      padding:13px 14px 13px 20px;
    }
    .fixed-cta-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
    }
    .fixed-cta-text{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .fixed-cta-icon{
      width:38px;height:38px;
      border-radius:16px;
      background:var(--brand-soft);
      color:var(--brand);
      display:flex;
      align-items:center;
      justify-content:center;
      flex:0 0 auto;
    }
    .fixed-cta-text strong{
      display:block;
      font-size:15px;
      line-height:1.25;
      color:var(--text);
    }
    .fixed-cta-text span{
      display:block;
      color:var(--muted);
      font-size:13px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:520px;
    }
    .fixed-cta-actions{
      display:flex;
      gap:10px;
      flex:0 0 auto;
    }
    .fixed-cta .btn{padding:10px 16px}

    .site-footer{
      border-top:1px solid var(--border);
      background:#fff;
      padding:54px 0 30px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr .7fr .7fr;
      gap:34px;
      align-items:start;
    }
    .footer-desc{
      color:var(--muted);
      margin:16px 0 0;
      max-width:450px;
      font-size:15px;
    }
    .footer-title{
      color:var(--text);
      font-size:15px;
      font-weight:900;
      margin-bottom:14px;
    }
    .footer-links{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:var(--muted);
      font-weight:700;
      font-size:14px;
    }
    .footer-links a:hover{
      color:var(--brand);
      padding-left:3px;
    }
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      border-top:1px solid var(--border);
      margin-top:34px;
      padding-top:20px;
      color:var(--muted);
      font-size:13px;
      font-weight:700;
    }

    @media (max-width:1199px){
      .article-head-grid{grid-template-columns:1fr 330px}
      .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:26px}
      .reading-card{padding:34px}
      .contact-card{grid-template-columns:1fr 390px}
    }

    @media (max-width:991px){
      body{padding-bottom:132px}
      .container-page{width:min(100% - 32px,var(--container))}
      .navbar-collapse{
        background:#fff;
        border:1px solid var(--border);
        border-radius:22px;
        margin-top:12px;
        padding:12px;
        box-shadow:var(--shadow);
      }
      .nav-menu{align-items:stretch;gap:4px}
      .nav-link.active:after{display:none}
      .nav-menu .btn{width:100%;margin-top:6px}
      .article-hero{padding:32px 0 28px}
      .article-hero-card{padding:26px;border-radius:30px}
      .article-head-grid{grid-template-columns:1fr}
      .hero-preview{min-height:auto}
      .full-visual{grid-template-columns:1fr}
      .article-layout{grid-template-columns:1fr}
      .article-sidebar{position:static;grid-template-columns:1fr 1fr}
      .recommend-grid{grid-template-columns:1fr 1fr}
      .contact-card{grid-template-columns:1fr}
    }

    @media (max-width:767px){
      body{padding-bottom:166px}
      .section{padding:60px 0}
      .section-tight{padding:48px 0}
      .article-hero-card{padding:22px;border-radius:26px}
      .article-title{font-size:32px}
      .article-summary{font-size:16px}
      .preview-stats{grid-template-columns:1fr}
      .reading-card{padding:24px;border-radius:24px}
      .pull-quote{font-size:16px;padding:18px}
      .article-body{font-size:16px;line-height:1.82}
      .article-body h2{font-size:24px;margin-top:34px}
      .article-body h3{font-size:20px}
      .article-footer-actions{align-items:stretch}
      .article-footer-actions .btn{width:100%}
      .article-sidebar{grid-template-columns:1fr}
      .recommend-grid{grid-template-columns:1fr}
      .contact-card{padding:24px;border-radius:26px}
      .footer-grid{grid-template-columns:1fr;gap:26px}
      .fixed-cta{bottom:10px;width:calc(100% - 20px);border-radius:22px;padding:12px}
      .fixed-cta-inner{display:grid;gap:12px}
      .fixed-cta-text span{white-space:normal;max-width:none}
      .fixed-cta-actions{display:grid;grid-template-columns:1fr 1fr;width:100%}
      .fixed-cta .btn{width:100%;padding:11px 10px}
    }

    @media (max-width:520px){
      .container-page{width:min(100% - 24px,var(--container))}
      .brand-mark{font-size:20px}
      .brand-dot{width:28px;height:28px}
      .article-hero-card{padding:18px;border-radius:22px}
      .article-title{font-size:29px}
      .article-meta{gap:8px}
      .full-visual{padding:16px}
      .reading-card{padding:20px}
      .article-body table{font-size:14px}
      .contact-card{padding:20px}
      .form-card{padding:18px}
      .fixed-cta-actions{grid-template-columns:1fr}
    }

/* 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}