/* roulang page: index */
:root{
      --bg:#f5f8fc;
      --bg-soft:#eef4fb;
      --panel:#ffffff;
      --panel-2:#f9fbfe;
      --text:#12304d;
      --muted:#5f7288;
      --line:#dce6f2;
      --line-2:#cfdceb;
      --primary:#2f6fb3;
      --primary-deep:#21578f;
      --primary-soft:#e5f0fb;
      --accent:#62a8e5;
      --accent-soft:#edf6ff;
      --success:#4ea98d;
      --warning:#e3a23b;
      --shadow:0 18px 45px rgba(23, 56, 95, .10);
      --shadow-sm:0 10px 24px rgba(23, 56, 95, .08);
      --radius:18px;
      --radius-lg:26px;
      --container:1200px;
      --space:24px;
      --header-h:82px;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(98,168,229,.12), transparent 24%),
        radial-gradient(circle at 88% 8%, rgba(47,111,179,.08), transparent 18%),
        linear-gradient(180deg, #f8fbff 0%, #f4f8fd 48%, #f7faff 100%);
      line-height:1.7;
      min-height:100vh;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(47,111,179,.18);color:var(--text)}
    :focus-visible{outline:3px solid rgba(47,111,179,.25);outline-offset:3px}
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin-inline:auto;
    }
    .skip-link{
      position:absolute;
      left:-9999px;
      top:auto;
      width:1px;
      height:1px;
      overflow:hidden;
    }
    .skip-link:focus{
      left:16px;
      top:16px;
      width:auto;
      height:auto;
      padding:10px 14px;
      z-index:9999;
      background:var(--panel);
      border:1px solid var(--line);
      border-radius:999px;
      box-shadow:var(--shadow-sm);
    }
    header{
      position:sticky;
      top:0;
      z-index:1000;
      backdrop-filter:blur(16px);
      background:rgba(247,250,254,.84);
      border-bottom:1px solid rgba(220,230,242,.82);
      box-shadow:0 8px 28px rgba(25,50,84,.05);
    }
    .nav{
      min-height:var(--header-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:700;
      color:var(--text);
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      background:linear-gradient(145deg, var(--primary), #4e86c5);
      box-shadow:0 12px 24px rgba(47,111,179,.24);
      position:relative;
      flex:0 0 auto;
    }
    .brand-mark::before,
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:auto;
      background:rgba(255,255,255,.95);
      border-radius:999px;
    }
    .brand-mark::before{
      width:18px;height:4px;left:12px;top:14px;
      box-shadow:0 9px 0 rgba(255,255,255,.95);
    }
    .brand-mark::after{
      width:10px;height:10px;left:16px;bottom:10px;
      border-radius:50%;
    }
    .brand span{
      font-size:1.02rem;
      letter-spacing:.2px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .nav-group{
      display:flex;
      align-items:center;
      gap:18px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
    }
    .nav-links a{
      padding:10px 14px;
      border-radius:999px;
      color:var(--muted);
      transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease;
    }
    .nav-links a:hover{
      background:var(--primary-soft);
      color:var(--primary-deep);
      transform:translateY(-1px);
    }
    .nav-links a.active{
      background:rgba(47,111,179,.10);
      color:var(--primary-deep);
      box-shadow:inset 0 0 0 1px rgba(47,111,179,.12);
    }
    .nav-cta{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:12px 18px;
      border-radius:999px;
      border:1px solid transparent;
      background:linear-gradient(145deg, var(--primary), var(--primary-deep));
      color:#fff;
      box-shadow:0 12px 24px rgba(47,111,179,.25);
      transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
      white-space:nowrap;
      flex:0 0 auto;
    }
    .nav-cta:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(47,111,179,.32);filter:saturate(1.05)}
    .nav-cta:active{transform:translateY(0)}
    .nav-toggle{
      display:none;
      align-items:center;
      justify-content:center;
      width:44px;
      height:44px;
      border:1px solid var(--line);
      border-radius:14px;
      background:var(--panel);
      color:var(--text);
      box-shadow:var(--shadow-sm);
      cursor:pointer;
      transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease;
    }
    .nav-toggle:hover{transform:translateY(-1px);background:var(--panel-2)}
    .nav-toggle span,
    .nav-toggle span::before,
    .nav-toggle span::after{
      display:block;
      width:18px;
      height:2px;
      border-radius:999px;
      background:currentColor;
      position:relative;
    }
    .nav-toggle span::before,
    .nav-toggle span::after{
      content:"";
      position:absolute;
      left:0;
    }
    .nav-toggle span::before{top:-6px}
    .nav-toggle span::after{top:6px}

    main{padding-bottom:40px}
    section{
      padding:82px 0;
      scroll-margin-top:96px;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:18px;
      margin-bottom:28px;
    }
    .section-head h2{
      margin:0;
      font-size:clamp(1.75rem, 2.2vw, 2.25rem);
      line-height:1.18;
      letter-spacing:-.02em;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      max-width:720px;
      font-size:1rem;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      margin-bottom:18px;
      border-radius:999px;
      border:1px solid rgba(47,111,179,.14);
      background:rgba(229,240,251,.76);
      color:var(--primary-deep);
      font-size:.92rem;
      font-weight:600;
    }
    .eyebrow::before{
      content:"";
      width:9px;
      height:9px;
      border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 4px rgba(98,168,229,.15);
    }
    .hero{
      padding-top:34px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:1.04fr .96fr;
      gap:28px;
      align-items:stretch;
    }
    .hero-copy,
    .hero-stage,
    .card,
    .panel,
    .update-featured,
    .update-item,
    .rank-item,
    .contact-panel,
    .faq-item,
    .timeline-step{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(220,230,242,.92);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-sm);
    }
    .hero-copy{
      padding:34px;
      display:flex;
      flex-direction:column;
      justify-content:center;
      min-height:520px;
      position:relative;
      overflow:hidden;
    }
    .hero-copy::after{
      content:"";
      position:absolute;
      inset:auto -80px -100px auto;
      width:260px;
      height:260px;
      background:radial-gradient(circle, rgba(98,168,229,.14), transparent 68%);
      pointer-events:none;
    }
    .hero h1{
      margin:0 0 18px;
      font-size:clamp(2rem, 4.5vw, 3.6rem);
      line-height:1.08;
      letter-spacing:-.04em;
    }
    .hero-desc{
      margin:0;
      color:var(--muted);
      font-size:1.06rem;
      max-width:48rem;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
      margin-bottom:24px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:600;
      cursor:pointer;
      transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease;
      white-space:nowrap;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn-primary{
      background:linear-gradient(145deg, var(--primary), var(--primary-deep));
      color:#fff;
      box-shadow:0 12px 24px rgba(47,111,179,.22);
    }
    .btn-primary:hover{box-shadow:0 16px 28px rgba(47,111,179,.28)}
    .btn-secondary{
      background:rgba(255,255,255,.75);
      border-color:var(--line);
      color:var(--primary-deep);
    }
    .btn-secondary:hover{
      background:var(--accent-soft);
      border-color:#c8dcf3;
    }
    .btn-ghost{
      background:transparent;
      border-color:transparent;
      color:var(--primary-deep);
      padding-inline:10px;
    }
    .btn-ghost:hover{
      background:rgba(47,111,179,.08);
    }
    .hero-bullets{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:auto;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 12px;
      border-radius:999px;
      background:rgba(239,245,251,.92);
      border:1px solid rgba(220,230,242,.92);
      color:var(--muted);
      font-size:.92rem;
      line-height:1;
    }
    .tag strong{color:var(--text)}
    .hero-stage{
      padding:18px;
      display:grid;
      grid-template-rows:auto 1fr auto;
      gap:16px;
      overflow:hidden;
      position:relative;
      min-height:520px;
    }
    .hero-stage::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(160deg, rgba(47,111,179,.06), rgba(98,168,229,.02) 40%, transparent 78%);
      pointer-events:none;
    }
    .stage-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      position:relative;
      z-index:1;
    }
    .stage-head .status{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(78,169,141,.12);
      color:var(--success);
      border:1px solid rgba(78,169,141,.18);
      font-weight:600;
      font-size:.92rem;
    }
    .stage-head .status::before{
      content:"";
      width:8px;height:8px;border-radius:50%;
      background:currentColor;
      box-shadow:0 0 0 4px rgba(78,169,141,.12);
    }
    .stage-meta{
      display:flex;
      gap:8px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .mini-badge{
      padding:8px 11px;
      border-radius:999px;
      background:rgba(255,255,255,.9);
      border:1px solid rgba(220,230,242,.92);
      color:var(--muted);
      font-size:.88rem;
      box-shadow:0 8px 16px rgba(25,50,84,.04);
    }
    .poster{
      border-radius:24px;
      overflow:hidden;
      background:
        radial-gradient(circle at 22% 18%, rgba(255,255,255,.95), rgba(255,255,255,0) 22%),
        radial-gradient(circle at 86% 18%, rgba(98,168,229,.36), transparent 23%),
        linear-gradient(145deg, #dfe9f8 0%, #f8fbff 46%, #ddeaf8 100%);
      border:1px solid rgba(201,217,236,.95);
      box-shadow:0 18px 34px rgba(23,56,95,.10);
      position:relative;
      min-height:360px;
      isolation:isolate;
    }
    .poster::before{
      content:"";
      position:absolute;
      inset:18px;
      border-radius:20px;
      background:
        linear-gradient(120deg, rgba(47,111,179,.92), rgba(98,168,229,.54)),
        radial-gradient(circle at 30% 30%, rgba(255,255,255,.26), transparent 26%);
      opacity:.98;
      z-index:-1;
    }
    .poster-art{
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 16% 18%, rgba(255,255,255,.28), transparent 13%),
        radial-gradient(circle at 84% 24%, rgba(255,255,255,.20), transparent 16%),
        linear-gradient(180deg, rgba(255,255,255,.12), rgba(255,255,255,.06));
    }
    .poster-shape{
      position:absolute;
      border-radius:999px;
      background:rgba(255,255,255,.12);
      filter:blur(.2px);
    }
    .shape-1{width:170px;height:170px;left:-28px;top:36px}
    .shape-2{width:96px;height:96px;right:26px;top:44px}
    .shape-3{width:240px;height:240px;right:-68px;bottom:-94px}
    .poster-content{
      position:relative;
      z-index:1;
      color:#fff;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      min-height:100%;
      padding:24px;
    }
    .poster-top{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:12px;
    }
    .cover-chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.16);
      border:1px solid rgba(255,255,255,.24);
      font-size:.9rem;
      backdrop-filter:blur(8px);
    }
    .cover-chip::before{
      content:"";
      width:8px;height:8px;border-radius:50%;
      background:#fff;
      box-shadow:0 0 0 4px rgba(255,255,255,.15);
    }
    .poster-copy h3{
      margin:18px 0 10px;
      font-size:1.6rem;
      line-height:1.16;
      letter-spacing:-.03em;
    }
    .poster-copy p{
      margin:0;
      max-width:24rem;
      color:rgba(255,255,255,.88);
    }
    .poster-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:10px;
      margin-top:18px;
    }
    .poster-pill{
      padding:12px 12px;
      border-radius:16px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.16);
      backdrop-filter:blur(8px);
      min-height:86px;
    }
    .poster-pill strong{
      display:block;
      font-size:1.05rem;
      margin-bottom:4px;
      color:#fff;
    }
    .poster-pill span{
      color:rgba(255,255,255,.82);
      font-size:.92rem;
    }
    .poster-footer{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-top:18px;
    }
    .progress{
      flex:1;
      height:8px;
      border-radius:999px;
      background:rgba(255,255,255,.18);
      overflow:hidden;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
    }
    .progress span{
      display:block;
      height:100%;
      width:78%;
      border-radius:999px;
      background:linear-gradient(90deg, rgba(255,255,255,.95), rgba(220,239,255,.82));
    }
    .progress-text{
      font-size:.9rem;
      color:rgba(255,255,255,.86);
      white-space:nowrap;
    }
    .grid-4{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .card{
      padding:22px;
      overflow:hidden;
      position:relative;
      transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .card:hover,
    .update-featured:hover,
    .update-item:hover,
    .rank-item:hover,
    .timeline-step:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow);
      border-color:#c8d9eb;
    }
    .feature-card .icon,
    .timeline-step .num,
    .rank-num,
    .mini-icon{
      width:42px;
      height:42px;
      border-radius:14px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:linear-gradient(145deg, var(--primary-soft), #f7fbff);
      color:var(--primary-deep);
      border:1px solid rgba(47,111,179,.12);
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.34);
      flex:0 0 auto;
      font-weight:700;
    }
    .feature-card h3,
    .timeline-step h3,
    .update-title,
    .rank-title,
    .contact-panel h3{
      margin:14px 0 10px;
      font-size:1.18rem;
      line-height:1.3;
    }
    .feature-card p,
    .timeline-step p,
    .update-summary,
    .rank-meta,
    .contact-panel p{
      margin:0;
      color:var(--muted);
      font-size:.98rem;
    }
    .card .link,
    .update-item .link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin-top:16px;
      color:var(--primary-deep);
      font-weight:600;
      transition:opacity .2s ease, transform .2s ease;
    }
    .card .link:hover,
    .update-item .link:hover{
      transform:translateX(2px);
      opacity:.92;
    }
    .stats-panel{
      margin-top:18px;
      padding:18px;
      border-radius:var(--radius-lg);
      border:1px solid rgba(220,230,242,.92);
      background:rgba(255,255,255,.74);
      box-shadow:var(--shadow-sm);
    }
    .stats-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .stat{
      padding:18px;
      border-radius:20px;
      border:1px solid rgba(220,230,242,.88);
      background:linear-gradient(180deg, #fff, #f8fbff);
      box-shadow:0 10px 20px rgba(25,50,84,.05);
      position:relative;
      overflow:hidden;
    }
    .stat::after{
      content:"";
      position:absolute;
      inset:auto -30px -36px auto;
      width:120px;
      height:120px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(98,168,229,.16), transparent 68%);
      pointer-events:none;
    }
    .stat strong{
      display:block;
      font-size:2rem;
      line-height:1;
      margin-bottom:10px;
      letter-spacing:-.03em;
      color:var(--primary-deep);
    }
    .stat span{
      display:block;
      color:var(--muted);
      font-size:.95rem;
    }
    .progress-rail{
      margin-top:18px;
      display:grid;
      gap:12px;
    }
    .progress-labels{
      display:flex;
      justify-content:space-between;
      gap:10px;
      flex-wrap:wrap;
      color:var(--muted);
      font-size:.92rem;
    }
    .rail{
      position:relative;
      height:12px;
      border-radius:999px;
      background:linear-gradient(90deg, rgba(47,111,179,.12), rgba(98,168,229,.16));
      overflow:hidden;
      box-shadow:inset 0 0 0 1px rgba(47,111,179,.06);
    }
    .rail span{
      position:absolute;
      left:0;
      top:0;
      bottom:0;
      width:84%;
      border-radius:999px;
      background:linear-gradient(90deg, var(--primary), var(--accent));
      box-shadow:0 8px 18px rgba(47,111,179,.25);
    }
    .rail-caps{
      display:flex;
      gap:8px;
      flex-wrap:wrap;
    }
    .cap{
      padding:7px 11px;
      border-radius:999px;
      background:rgba(255,255,255,.86);
      border:1px solid rgba(220,230,242,.92);
      color:var(--muted);
      font-size:.88rem;
    }
    .section-shell{
      padding:28px;
      background:rgba(255,255,255,.64);
      border:1px solid rgba(220,230,242,.88);
      border-radius:28px;
      box-shadow:var(--shadow-sm);
    }
    .updates-grid{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:18px;
      align-items:start;
    }
    .update-featured{
      padding:24px;
      min-height:100%;
      transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .update-featured .badge,
    .update-item .badge,
    .rank-badge,
    .case-badge,
    .step-badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 11px;
      border-radius:999px;
      background:rgba(47,111,179,.10);
      color:var(--primary-deep);
      border:1px solid rgba(47,111,179,.12);
      font-size:.86rem;
      font-weight:600;
    }
    .update-featured h3{
      margin:14px 0 12px;
      font-size:1.6rem;
      line-height:1.24;
      letter-spacing:-.02em;
    }
    .update-featured p{
      margin:0;
      color:var(--muted);
      font-size:1rem;
    }
    .update-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:18px;
      color:var(--muted);
      font-size:.92rem;
    }
    .update-meta span{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 10px;
      border-radius:12px;
      background:rgba(247,250,254,.92);
      border:1px solid rgba(220,230,242,.92);
    }
    .update-list{
      display:grid;
      gap:12px;
    }
    .update-item{
      padding:16px;
      display:grid;
      gap:10px;
      transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .update-item-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
    }
    .update-item h4{
      margin:0;
      font-size:1.02rem;
      line-height:1.4;
    }
    .update-item p{
      margin:0;
      color:var(--muted);
      font-size:.94rem;
      display:-webkit-box;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
      overflow:hidden;
    }
    .update-item .meta-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      color:var(--muted);
      font-size:.88rem;
    }
    .update-item .meta-row span{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:6px 9px;
      border-radius:999px;
      background:rgba(247,250,254,.92);
      border:1px solid rgba(220,230,242,.92);
    }
    .empty-state{
      min-height:240px;
      display:grid;
      place-items:center;
      text-align:center;
      padding:24px;
      color:var(--muted);
      border:1px dashed #cfdceb;
      border-radius:22px;
      background:linear-gradient(180deg, #fff, #f8fbff);
    }
    .empty-state strong{
      display:block;
      color:var(--text);
      margin-bottom:10px;
      font-size:1.1rem;
    }
    .empty-actions{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:center;
      margin-top:14px;
    }
    .showcase-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .showcase-card{
      overflow:hidden;
      padding:0;
      display:flex;
      flex-direction:column;
      min-height:100%;
    }
    .showcase-art{
      aspect-ratio:16/10;
      background:
        radial-gradient(circle at 20% 22%, rgba(255,255,255,.84), transparent 16%),
        radial-gradient(circle at 80% 16%, rgba(98,168,229,.42), transparent 18%),
        linear-gradient(145deg, #d9e7f7, #f8fbff 52%, #dfeaf8);
      border-bottom:1px solid rgba(220,230,242,.92);
      position:relative;
      overflow:hidden;
    }
    .showcase-art::before{
      content:"";
      position:absolute;
      inset:16px;
      border-radius:20px;
      background:
        linear-gradient(135deg, rgba(47,111,179,.94), rgba(98,168,229,.58));
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.12);
    }
    .showcase-art::after{
      content:"";
      position:absolute;
      inset:auto 18px 18px auto;
      width:130px;
      height:130px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(255,255,255,.20), transparent 68%);
      pointer-events:none;
    }
    .showcase-body{
      padding:22px;
      display:grid;
      gap:12px;
      flex:1;
    }
    .showcase-body h3{
      margin:0;
      font-size:1.15rem;
      line-height:1.32;
    }
    .showcase-body p{
      margin:0;
      color:var(--muted);
      font-size:.98rem;
    }
    .tag-row{
      display:flex;
      gap:8px;
      flex-wrap:wrap;
    }
    .tag-row .tag{
      background:rgba(247,250,254,.95);
    }
    .showcase-actions{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      margin-top:auto;
    }
    .rank-list{
      display:grid;
      gap:12px;
    }
    .rank-item{
      padding:16px 18px;
      display:flex;
      align-items:flex-start;
      gap:14px;
      transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .rank-num{
      width:44px;
      height:44px;
      border-radius:16px;
      background:linear-gradient(145deg, rgba(47,111,179,.10), rgba(98,168,229,.16));
      font-weight:800;
      color:var(--primary-deep);
    }
    .rank-info{
      min-width:0;
      flex:1;
    }
    .rank-info h4{
      margin:0 0 6px;
      font-size:1rem;
      line-height:1.36;
    }
    .rank-meta{
      font-size:.94rem;
    }
    .rank-badge{
      margin-top:4px;
      display:inline-flex;
    }
    .timeline-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .timeline-step{
      padding:22px;
      transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .timeline-step .num{
      font-weight:800;
      color:var(--primary-deep);
      background:linear-gradient(145deg, var(--primary-soft), #fff);
    }
    .timeline-step p{margin-top:10px}
    .timeline-note{
      margin-top:18px;
      padding:16px 18px;
      border-radius:18px;
      background:rgba(237,246,255,.96);
      border:1px solid rgba(199,220,242,.96);
      color:var(--primary-deep);
    }
    .faq-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:16px;
    }
    .faq-item{
      overflow:hidden;
      transition:border-color .22s ease, box-shadow .22s ease, transform .22s ease;
    }
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:20px 22px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      font-weight:600;
      color:var(--text);
      user-select:none;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{
      content:"+";
      width:34px;
      height:34px;
      border-radius:999px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      flex:0 0 auto;
      background:var(--primary-soft);
      color:var(--primary-deep);
      transition:transform .2s ease, background-color .2s ease;
    }
    .faq-item[open] summary::after{
      content:"–";
      background:rgba(47,111,179,.12);
    }
    .faq-body{
      padding:0 22px 22px;
      color:var(--muted);
    }
    .contact-panel{
      padding:26px;
      display:grid;
      grid-template-columns:1fr .86fr;
      gap:22px;
      align-items:start;
    }
    .form{
      display:grid;
      gap:14px;
    }
    .field{
      display:grid;
      gap:8px;
    }
    .field label{
      font-weight:600;
      color:var(--text);
      font-size:.95rem;
    }
    .field input,
    .field textarea{
      width:100%;
      border-radius:16px;
      border:1px solid var(--line);
      background:#fff;
      color:var(--text);
      padding:14px 15px;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.45);
      transition:border-color .2s ease, box-shadow .2s ease, background-color .2s ease;
    }
    .field input::placeholder,
    .field textarea::placeholder{color:#93a2b3}
    .field input:focus,
    .field textarea:focus{
      outline:none;
      border-color:#b7cde5;
      box-shadow:0 0 0 4px rgba(47,111,179,.10);
      background:#fbfdff;
    }
    .field textarea{min-height:120px;resize:vertical}
    .form-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      margin-top:4px;
    }
    .contact-aside{
      border-radius:24px;
      background:linear-gradient(180deg, #f8fbff, #eef5fc);
      border:1px solid rgba(210,224,240,.96);
      padding:22px;
      box-shadow:inset 0 1px 0 rgba(255,255,255,.76);
      display:grid;
      gap:14px;
    }
    .contact-aside .line{
      height:1px;
      background:var(--line);
      margin:4px 0;
    }
    .contact-aside .item{
      display:flex;
      align-items:flex-start;
      gap:12px;
      color:var(--muted);
    }
    .contact-aside .item .mini-icon{
      margin-top:2px;
      width:36px;height:36px;border-radius:12px;
    }
    .cta-box{
      background:linear-gradient(145deg, var(--primary-deep), var(--primary));
      color:#fff;
      border-radius:30px;
      padding:28px;
      box-shadow:0 18px 42px rgba(33,87,143,.22);
      position:relative;
      overflow:hidden;
    }
    .cta-box::before,
    .cta-box::after{
      content:"";
      position:absolute;
      border-radius:50%;
      background:rgba(255,255,255,.11);
      pointer-events:none;
    }
    .cta-box::before{
      width:220px;height:220px;right:-70px;top:-70px;
    }
    .cta-box::after{
      width:160px;height:160px;left:-60px;bottom:-70px;
    }
    .cta-box h2{
      margin:0 0 12px;
      font-size:clamp(1.7rem, 2.8vw, 2.5rem);
      line-height:1.12;
    }
    .cta-box p{
      margin:0;
      max-width:56rem;
      color:rgba(255,255,255,.88);
      font-size:1.03rem;
    }
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      margin-top:22px;
    }
    .btn-light{
      background:#fff;
      color:var(--primary-deep);
      box-shadow:0 12px 22px rgba(255,255,255,.14);
    }
    .btn-light:hover{background:#f6fbff}
    .btn-outline-light{
      background:transparent;
      border-color:rgba(255,255,255,.28);
      color:#fff;
    }
    .btn-outline-light:hover{
      background:rgba(255,255,255,.10);
    }
    footer{
      padding:30px 0 100px;
      border-top:1px solid rgba(220,230,242,.88);
      background:rgba(247,250,254,.72);
      backdrop-filter:blur(8px);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:18px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:12px;
      font-weight:700;
    }
    .footer p{
      margin:0;
      color:var(--muted);
    }
    .footer h4{
      margin:0 0 14px;
      font-size:1rem;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:var(--muted);
      transition:color .2s ease, transform .2s ease;
    }
    .footer-links a:hover{
      color:var(--primary-deep);
      transform:translateX(2px);
    }
    .copyright{
      margin-top:18px;
      padding-top:18px;
      border-top:1px solid rgba(220,230,242,.88);
      color:var(--muted);
      font-size:.94rem;
      display:flex;
      flex-wrap:wrap;
      justify-content:space-between;
      gap:12px;
    }
    .mobile-cta{
      position:fixed;
      left:16px;
      right:16px;
      bottom:16px;
      z-index:900;
      display:none;
      gap:10px;
    }
    .mobile-cta .btn{
      width:100%;
      min-height:52px;
      box-shadow:0 14px 28px rgba(47,111,179,.22);
    }

    @media (max-width: 1199px){
      .hero-grid,
      .updates-grid,
      .contact-panel{
        grid-template-columns:1fr;
      }
      .hero-copy,
      .hero-stage{
        min-height:auto;
      }
      .grid-4,
      .stats-grid,
      .showcase-grid,
      .timeline-grid{
        grid-template-columns:repeat(2,1fr);
      }
      .faq-grid,
      .footer-grid{
        grid-template-columns:1fr;
      }
    }
    @media (max-width: 991px){
      .section-head{
        flex-direction:column;
        align-items:flex-start;
      }
      .nav-links{
        gap:6px;
      }
      .nav-links a{
        padding:9px 12px;
      }
      .hero-copy{padding:28px}
      .hero-stage{padding:16px}
      .poster-grid{grid-template-columns:1fr}
      .stats-grid,
      .grid-4,
      .showcase-grid,
      .timeline-grid{
        grid-template-columns:1fr 1fr;
      }
    }
    @media (max-width: 768px){
      :root{--header-h:72px}
      .nav{
        min-height:var(--header-h);
      }
      .nav-toggle{display:inline-flex}
      .nav-group{
        position:fixed;
        left:16px;
        right:16px;
        top:84px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:12px;
        padding:14px;
        border-radius:22px;
        background:rgba(255,255,255,.95);
        border:1px solid rgba(220,230,242,.96);
        box-shadow:var(--shadow);
      }
      body.nav-open .nav-group{display:flex}
      .nav-links{
        width:100%;
        display:grid;
        grid-template-columns:1fr 1fr;
      }
      .nav-links a{
        justify-content:center;
        text-align:center;
      }
      .nav-cta{width:100%;justify-content:center}
      section{padding:56px 0}
      .hero-copy h1{font-size:clamp(1.9rem, 8vw, 3rem)}
      .hero-desc{font-size:1rem}
      .stats-grid,
      .grid-4,
      .showcase-grid,
      .timeline-grid{
        grid-template-columns:1fr;
      }
      .hero-actions,
      .cta-actions,
      .showcase-actions,
      .form-actions,
      .empty-actions{
        flex-direction:column;
      }
      .btn,
      .hero-actions .btn,
      .cta-actions .btn,
      .form-actions .btn,
      .empty-actions .btn{
        width:100%;
      }
      .hero-copy,
      .hero-stage,
      .section-shell,
      .card,
      .contact-panel,
      .cta-box{
        border-radius:24px;
      }
      .mobile-cta{display:flex}
      .copyright{
        flex-direction:column;
      }
    }
    @media (max-width: 520px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .brand span{font-size:.96rem}
      .nav-links{grid-template-columns:1fr}
      .hero-copy{padding:22px}
      .hero-stage{padding:14px}
      .poster-content{padding:18px}
      .poster-copy h3{font-size:1.35rem}
      .section-head h2{font-size:1.45rem}
      .update-featured,
      .update-item,
      .card,
      .timeline-step,
      .rank-item,
      .contact-panel,
      .cta-box{
        padding:18px;
      }
      .faq-item summary{
        padding:18px;
      }
      .faq-body{
        padding:0 18px 18px;
      }
    }

/* roulang page: article */
:root{
      --bg:#f5f8fc;
      --bg-soft:#eef4fb;
      --panel:#ffffff;
      --panel-2:#f9fbfe;
      --text:#12304d;
      --muted:#5f7288;
      --line:#dce6f2;
      --line-2:#cfdceb;
      --primary:#2f6fb3;
      --primary-deep:#21578f;
      --primary-soft:#e5f0fb;
      --accent:#62a8e5;
      --accent-soft:#edf6ff;
      --success:#4ea98d;
      --warning:#e3a23b;
      --shadow:0 18px 45px rgba(23, 56, 95, .10);
      --shadow-sm:0 10px 24px rgba(23, 56, 95, .08);
      --radius:18px;
      --radius-lg:26px;
      --container:1200px;
      --space:24px;
      --header-h:72px;
    }
    html{scroll-behavior:smooth}
    *{box-sizing:border-box}
    body{
      margin:0;
      font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(98,168,229,.12), transparent 24%),
        radial-gradient(circle at 88% 8%, rgba(47,111,179,.08), transparent 18%),
        linear-gradient(180deg, #f8fbff 0%, #f4f8fd 48%, #f7faff 100%);
      line-height:1.7;
      min-height:100vh;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(47,111,179,.18);color:var(--text)}
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin-inline:auto;
    }
    .skip-link{
      position:absolute;
      left:-999px;
      top:10px;
      z-index:2000;
      padding:10px 14px;
      border-radius:999px;
      background:var(--panel);
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .skip-link:focus{left:16px}
    header{
      position:sticky;
      top:0;
      z-index:1000;
      backdrop-filter:blur(16px);
      background:rgba(247,250,254,.84);
      border-bottom:1px solid rgba(220,230,242,.82);
      box-shadow:0 8px 28px rgba(25,50,84,.05);
    }
    .nav{
      min-height:var(--header-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      position:relative;
    }
    .brand,
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:700;
      color:var(--text);
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      background:linear-gradient(145deg, var(--primary), #4e86c5);
      box-shadow:0 12px 24px rgba(47,111,179,.24);
      position:relative;
      flex:0 0 auto;
    }
    .brand-mark::before,
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:auto;
      background:rgba(255,255,255,.95);
      border-radius:999px;
    }
    .brand-mark::before{
      width:18px;height:4px;left:12px;top:14px;
      box-shadow:0 9px 0 rgba(255,255,255,.95);
    }
    .brand-mark::after{
      width:10px;height:10px;left:16px;bottom:10px;
      border-radius:50%;
    }
    .brand span,
    .footer-brand span{
      font-size:1.02rem;
      letter-spacing:.2px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .nav-group{
      display:flex;
      align-items:center;
      gap:18px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
    }
    .nav-links a{
      padding:10px 14px;
      border-radius:999px;
      color:var(--muted);
      transition:background-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
    }
    .nav-links a:hover{
      background:var(--primary-soft);
      color:var(--primary-deep);
      transform:translateY(-1px);
    }
    .nav-links a.active{
      background:rgba(47,111,179,.10);
      color:var(--primary-deep);
      box-shadow:inset 0 0 0 1px rgba(47,111,179,.12);
    }
    .nav-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      padding:12px 18px;
      border-radius:999px;
      border:1px solid transparent;
      background:linear-gradient(145deg, var(--primary), var(--primary-deep));
      color:#fff;
      box-shadow:0 12px 24px rgba(47,111,179,.25);
      transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
      white-space:nowrap;
      flex:0 0 auto;
    }
    .nav-cta:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(47,111,179,.32);filter:saturate(1.05)}
    .nav-cta:active{transform:translateY(0)}
    .nav-toggle{
      display:none;
      align-items:center;
      justify-content:center;
      width:44px;
      height:44px;
      border:1px solid var(--line);
      border-radius:14px;
      background:var(--panel);
      color:var(--text);
      box-shadow:var(--shadow-sm);
      cursor:pointer;
      transition:background-color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
    }
    .nav-toggle:hover{transform:translateY(-1px);background:var(--panel-2);border-color:var(--line-2)}
    .nav-toggle:focus-visible,
    .nav-links a:focus-visible,
    .nav-cta:focus-visible,
    .btn:focus-visible,
    .footer-links a:focus-visible,
    .brand:focus-visible,
    .footer-brand:focus-visible,
    summary:focus-visible{
      outline:3px solid rgba(98,168,229,.35);
      outline-offset:2px;
    }
    .nav-toggle span,
    .nav-toggle span::before,
    .nav-toggle span::after{
      display:block;
      width:18px;
      height:2px;
      border-radius:999px;
      background:currentColor;
      position:relative;
    }
    .nav-toggle span::before,
    .nav-toggle span::after{
      content:"";
      position:absolute;
      left:0;
    }
    .nav-toggle span::before{top:-6px}
    .nav-toggle span::after{top:6px}

    main{padding:26px 0 40px}
    section{
      padding:72px 0;
      scroll-margin-top:96px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      margin-bottom:18px;
      border-radius:999px;
      border:1px solid rgba(47,111,179,.14);
      background:rgba(229,240,251,.76);
      color:var(--primary-deep);
      font-size:.92rem;
      font-weight:600;
    }
    .eyebrow::before{
      content:"";
      width:9px;
      height:9px;
      border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 4px rgba(98,168,229,.15);
      flex:0 0 auto;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:18px;
      margin-bottom:28px;
    }
    .section-head h2{
      margin:0;
      font-size:clamp(1.72rem, 2.2vw, 2.28rem);
      line-height:1.18;
      letter-spacing:-.02em;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      max-width:720px;
      font-size:1rem;
    }

    .hero-like,
    .article-hero{
      padding-top:18px;
    }
    .article-topbar{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      margin-bottom:18px;
    }
    .breadcrumbs{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:10px;
      color:var(--muted);
      font-size:.95rem;
    }
    .breadcrumbs a{
      color:var(--primary-deep);
      transition:color .2s ease;
    }
    .breadcrumbs a:hover{color:var(--primary)}
    .breadcrumbs span.sep{
      color:#97a9bb;
    }
    .page-flag{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.8);
      border:1px solid rgba(220,230,242,.92);
      color:var(--muted);
      box-shadow:var(--shadow-sm);
      font-size:.92rem;
    }
    .article-hero-card,
    .article-card,
    .panel,
    .card,
    .faq-item,
    .related-card,
    .update-card,
    .info-card,
    .cta-panel,
    .empty-state,
    .side-card{
      background:rgba(255,255,255,.90);
      border:1px solid rgba(220,230,242,.94);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-sm);
    }
    .article-hero-card{
      padding:28px;
    }
    .article-grid{
      display:grid;
      grid-template-columns:minmax(0,1.14fr) minmax(310px,.86fr);
      gap:24px;
      align-items:stretch;
    }
    .article-copy{
      padding:4px 0 2px;
    }
    .article-copy h1{
      margin:0;
      font-size:clamp(2rem, 3.2vw, 3.2rem);
      line-height:1.12;
      letter-spacing:-.03em;
    }
    .article-summary{
      margin:18px 0 0;
      font-size:1.06rem;
      color:var(--muted);
      max-width:760px;
    }
    .meta-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:22px;
    }
    .meta-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 12px;
      border-radius:999px;
      background:var(--panel-2);
      color:var(--muted);
      border:1px solid var(--line);
      font-size:.92rem;
    }
    .meta-pill strong{color:var(--text);font-weight:600}
    .action-row,
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:600;
      transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,border-color .2s ease,color .2s ease,filter .2s ease;
      white-space:nowrap;
      cursor:pointer;
      user-select:none;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn-primary{
      background:linear-gradient(145deg, var(--primary), var(--primary-deep));
      color:#fff;
      box-shadow:0 14px 26px rgba(47,111,179,.24);
    }
    .btn-primary:hover{box-shadow:0 18px 30px rgba(47,111,179,.30);filter:saturate(1.03)}
    .btn-secondary{
      background:rgba(255,255,255,.92);
      color:var(--primary-deep);
      border-color:rgba(47,111,179,.18);
      box-shadow:inset 0 0 0 1px rgba(47,111,179,.04);
    }
    .btn-secondary:hover{
      background:rgba(229,240,251,.72);
      border-color:rgba(47,111,179,.28);
      color:var(--primary);
    }
    .btn-soft{
      background:var(--primary-soft);
      color:var(--primary-deep);
      border-color:transparent;
    }
    .article-side{
      display:grid;
      gap:16px;
    }
    .side-card{
      padding:22px;
    }
    .side-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:16px;
    }
    .side-tag{
      padding:7px 10px;
      border-radius:999px;
      background:rgba(47,111,179,.08);
      color:var(--primary-deep);
      font-weight:600;
      font-size:.9rem;
    }
    .side-chip{
      padding:7px 10px;
      border-radius:999px;
      background:rgba(78,169,141,.10);
      color:var(--success);
      font-weight:600;
      font-size:.88rem;
    }
    .side-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:12px;
    }
    .side-list li{
      position:relative;
      padding-left:18px;
      color:var(--muted);
    }
    .side-list li::before{
      content:"";
      position:absolute;
      left:0;
      top:.8em;
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 4px rgba(98,168,229,.14);
      transform:translateY(-50%);
    }
    .mini-stats{
      display:grid;
      grid-template-columns:repeat(2, minmax(0,1fr));
      gap:12px;
    }
    .stat-box{
      padding:16px 14px;
      border-radius:18px;
      background:linear-gradient(180deg, #fff, #f8fbff);
      border:1px solid var(--line);
    }
    .stat-box .label{
      display:block;
      color:var(--muted);
      font-size:.88rem;
      margin-bottom:6px;
    }
    .stat-box .value{
      display:block;
      font-weight:700;
      font-size:1.02rem;
      color:var(--text);
      line-height:1.35;
    }

    .update-section{
      padding-top:24px;
    }
    .update-wrap{
      padding:26px;
      border-radius:var(--radius-lg);
      border:1px solid rgba(220,230,242,.92);
      background:linear-gradient(180deg, rgba(255,255,255,.86), rgba(250,252,255,.94));
      box-shadow:var(--shadow-sm);
    }
    .update-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:16px;
      margin-top:10px;
    }
    .update-card{
      padding:20px;
      transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
    }
    .update-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow);
      border-color:rgba(47,111,179,.18);
    }
    .update-card .label{
      display:flex;
      align-items:center;
      gap:8px;
      color:var(--muted);
      font-size:.9rem;
      margin-bottom:8px;
    }
    .update-card .label::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--accent);
    }
    .update-card strong{
      display:block;
      font-size:1.02rem;
      line-height:1.45;
      color:var(--text);
    }
    .update-progress{
      margin-top:18px;
      height:10px;
      border-radius:999px;
      background:#e9f1fa;
      overflow:hidden;
      position:relative;
      box-shadow:inset 0 0 0 1px rgba(47,111,179,.06);
    }
    .update-progress span{
      display:block;
      height:100%;
      width:72%;
      border-radius:inherit;
      background:linear-gradient(90deg, var(--primary), var(--accent));
      box-shadow:0 10px 18px rgba(47,111,179,.18);
    }
    .update-progress-note{
      margin-top:10px;
      color:var(--muted);
      font-size:.92rem;
      display:flex;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
    }

    .content-section{
      padding-top:24px;
    }
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,1.15fr) minmax(290px,.85fr);
      gap:24px;
      align-items:start;
    }
    .article-card{
      padding:28px;
    }
    .article-content{
      font-size:1.06rem;
      line-height:1.88;
      color:var(--text);
      overflow-wrap:anywhere;
    }
    .article-content > :first-child{margin-top:0}
    .article-content > :last-child{margin-bottom:0}
    .article-content h2,
    .article-content h3,
    .article-content h4{
      line-height:1.25;
      letter-spacing:-.02em;
      margin:1.6em 0 .7em;
    }
    .article-content h2{font-size:1.62rem}
    .article-content h3{font-size:1.28rem}
    .article-content h4{font-size:1.1rem}
    .article-content p{
      margin:0 0 1.08em;
      color:var(--text);
    }
    .article-content a{
      color:var(--primary-deep);
      text-decoration:underline;
      text-underline-offset:3px;
      text-decoration-thickness:1.5px;
    }
    .article-content a:hover{color:var(--primary)}
    .article-content strong{font-weight:700}
    .article-content em{font-style:italic}
    .article-content ul,
    .article-content ol{
      padding-left:1.35em;
      margin:0 0 1.1em;
    }
    .article-content li{margin:.3em 0}
    .article-content blockquote{
      margin:1.2em 0;
      padding:18px 20px;
      border-left:4px solid var(--primary);
      background:linear-gradient(180deg, rgba(229,240,251,.82), rgba(246,250,255,.96));
      border-radius:0 18px 18px 0;
      color:#234864;
      box-shadow:inset 0 0 0 1px rgba(47,111,179,.08);
    }
    .article-content hr{
      border:0;
      border-top:1px solid var(--line);
      margin:1.8em 0;
    }
    .article-content img,
    .article-content figure{
      max-width:100%;
      height:auto;
    }
    .article-content img{
      border-radius:18px;
      box-shadow:0 14px 28px rgba(23,56,95,.10);
      margin:1.1em 0;
    }
    .article-content figure{
      margin:1.1em 0;
    }
    .article-content figcaption{
      margin-top:10px;
      font-size:.92rem;
      color:var(--muted);
      text-align:center;
    }
    .article-content table{
      width:100%;
      border-collapse:collapse;
      display:block;
      overflow-x:auto;
      border-radius:16px;
      border:1px solid var(--line);
      margin:1.2em 0;
      background:#fff;
      box-shadow:var(--shadow-sm);
    }
    .article-content th,
    .article-content td{
      padding:12px 14px;
      border-bottom:1px solid var(--line);
      text-align:left;
      white-space:nowrap;
    }
    .article-content th{
      background:var(--panel-2);
      color:var(--text);
      font-weight:600;
    }
    .article-content pre{
      overflow:auto;
      padding:18px;
      border-radius:18px;
      background:#102238;
      color:#eef6ff;
      box-shadow:var(--shadow-sm);
      margin:1.2em 0;
    }
    .article-content code{
      padding:.18em .42em;
      border-radius:8px;
      background:#eef4fb;
      color:#234864;
      font-size:.92em;
    }
    .article-content pre code{
      padding:0;
      background:none;
      color:inherit;
      font-size:.96em;
    }

    .info-column{
      display:grid;
      gap:16px;
      position:sticky;
      top:98px;
    }
    .info-card{
      padding:22px;
    }
    .info-card h3{
      margin:0 0 12px;
      font-size:1.12rem;
      line-height:1.35;
    }
    .info-list{
      display:grid;
      gap:12px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .info-list li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      color:var(--muted);
    }
    .info-list li::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--accent);
      margin-top:.55em;
      flex:0 0 auto;
    }
    .info-actions{
      display:grid;
      gap:10px;
      margin-top:14px;
    }

    .faq-section{
      padding-top:18px;
    }
    .faq-list{
      display:grid;
      gap:14px;
    }
    .faq-item{
      overflow:hidden;
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .faq-item:hover{
      transform:translateY(-2px);
      box-shadow:var(--shadow);
      border-color:rgba(47,111,179,.18);
    }
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:20px 22px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      font-weight:600;
      color:var(--text);
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{
      content:"+";
      width:28px;
      height:28px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:50%;
      background:var(--primary-soft);
      color:var(--primary-deep);
      font-size:1.1rem;
      font-weight:700;
      flex:0 0 auto;
      transition:transform .2s ease, background-color .2s ease;
    }
    .faq-item[open] summary::after{
      content:"–";
      background:rgba(47,111,179,.12);
    }
    .faq-answer{
      padding:0 22px 20px;
      color:var(--muted);
    }
    .faq-answer p{margin:0}
    .related-section{
      padding-top:18px;
    }
    .related-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:16px;
    }
    .related-card{
      padding:22px;
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .related-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow);
      border-color:rgba(47,111,179,.18);
    }
    .related-card .tag{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 10px;
      border-radius:999px;
      background:rgba(229,240,251,.9);
      color:var(--primary-deep);
      font-size:.88rem;
      font-weight:600;
      margin-bottom:12px;
    }
    .related-card h3{
      margin:0 0 10px;
      font-size:1.1rem;
      line-height:1.35;
    }
    .related-card p{
      margin:0 0 16px;
      color:var(--muted);
    }
    .related-card .more{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary-deep);
      font-weight:600;
    }
    .cta-section{
      padding-top:24px;
    }
    .cta-panel{
      padding:28px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      background:
        linear-gradient(135deg, rgba(47,111,179,.96), rgba(33,87,143,.98));
      color:#fff;
      box-shadow:0 22px 48px rgba(33,87,143,.20);
      border:none;
    }
    .cta-panel h2{
      margin:0 0 8px;
      font-size:clamp(1.45rem, 2.2vw, 2rem);
      line-height:1.2;
    }
    .cta-panel p{
      margin:0;
      color:rgba(255,255,255,.88);
      max-width:760px;
    }
    .cta-panel .btn-secondary{
      background:rgba(255,255,255,.14);
      color:#fff;
      border-color:rgba(255,255,255,.22);
      box-shadow:none;
    }
    .cta-panel .btn-secondary:hover{
      background:rgba(255,255,255,.20);
      color:#fff;
      border-color:rgba(255,255,255,.34);
    }

    .empty-wrap{
      padding:48px 0 18px;
    }
    .empty-state{
      padding:40px 28px;
      text-align:center;
      max-width:720px;
      margin:0 auto;
    }
    .empty-state h1{
      margin:14px 0 8px;
      font-size:clamp(1.8rem, 3vw, 2.6rem);
      line-height:1.2;
    }
    .empty-state p{
      margin:0 0 20px;
      color:var(--muted);
      font-size:1.02rem;
    }
    .empty-mark{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(226,162,59,.10);
      color:#b06b05;
      font-weight:600;
      font-size:.92rem;
    }
    .empty-mark::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--warning);
      box-shadow:0 0 0 4px rgba(227,162,59,.14);
    }

    footer{
      margin-top:24px;
      padding:44px 0 22px;
      border-top:1px solid rgba(220,230,242,.84);
      background:rgba(247,250,254,.88);
    }
    .footer{
      display:grid;
      gap:26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.25fr .85fr .85fr;
      gap:24px;
      align-items:start;
    }
    .footer-grid p{
      margin:14px 0 0;
      color:var(--muted);
      max-width:440px;
    }
    .footer-grid h4{
      margin:0 0 14px;
      font-size:1rem;
      line-height:1.4;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:var(--muted);
      transition:color .2s ease, transform .2s ease;
      width:fit-content;
    }
    .footer-links a:hover{
      color:var(--primary-deep);
      transform:translateX(2px);
    }
    .copyright{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding-top:18px;
      border-top:1px solid var(--line);
      color:var(--muted);
      font-size:.94rem;
      flex-wrap:wrap;
    }

    @media (max-width: 1199.98px){
      .article-grid,
      .article-layout{
        grid-template-columns:1fr;
      }
      .info-column{position:static}
      .related-grid{grid-template-columns:repeat(2, minmax(0,1fr))}
    }
    @media (max-width: 991.98px){
      section{padding:60px 0}
      .hero-like,
      .article-hero{padding-top:12px}
      .update-grid{grid-template-columns:1fr 1fr}
      .cta-panel{flex-direction:column;align-items:flex-start}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 767.98px){
      .nav-toggle{display:inline-flex}
      .nav-group{
        position:absolute;
        left:0;
        right:0;
        top:calc(var(--header-h) - 4px);
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:14px;
        padding:16px;
        background:rgba(255,255,255,.98);
        border:1px solid rgba(220,230,242,.95);
        border-radius:20px;
        box-shadow:var(--shadow);
      }
      .nav-group.is-open{display:flex}
      .nav-links{
        width:100%;
        flex-direction:column;
        align-items:stretch;
      }
      .nav-links a,
      .nav-cta{
        width:100%;
        justify-content:center;
      }
      .section-head{
        flex-direction:column;
        align-items:flex-start;
      }
      .article-hero-card,
      .article-card,
      .update-wrap,
      .info-card,
      .side-card,
      .cta-panel,
      .empty-state,
      .related-card{
        padding:20px;
      }
      .update-grid,
      .related-grid,
      .footer-grid,
      .mini-stats{
        grid-template-columns:1fr;
      }
      .article-content{
        font-size:1rem;
        line-height:1.8;
      }
      .action-row,
      .cta-actions{
        width:100%;
      }
      .action-row .btn,
      .cta-actions .btn{
        flex:1 1 180px;
      }
    }
    @media (max-width: 575.98px){
      .container{width:min(var(--container), calc(100% - 24px))}
      main{padding-top:18px}
      section{padding:52px 0}
      .article-copy h1{font-size:clamp(1.7rem, 8vw, 2.3rem)}
      .article-summary{font-size:1rem}
      .meta-row{gap:8px}
      .meta-pill{width:100%;justify-content:flex-start}
      .btn,
      .nav-cta{
        width:100%;
      }
      .action-row,
      .cta-actions{
        flex-direction:column;
      }
      .copyright{
        flex-direction:column;
        align-items:flex-start;
      }
    }