/* roulang page: index */
:root{
      --primary:#7c3aed;
      --primary-dark:#5b21b6;
      --primary-soft:#ede9fe;
      --secondary:#0f766e;
      --accent:#f59e0b;
      --danger:#e11d48;
      --bg:#fbfaf8;
      --bg-2:#f5f3ff;
      --surface:#ffffff;
      --surface-soft:#fff7ed;
      --text:#1f2937;
      --muted:#667085;
      --light:#9ca3af;
      --border:#e5e7eb;
      --border-strong:#d8b4fe;
      --shadow-sm:0 8px 22px rgba(31,41,55,.08);
      --shadow-md:0 18px 45px rgba(76,29,149,.14);
      --shadow-lg:0 28px 80px rgba(31,41,55,.18);
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:30px;
      --container:1180px;
      --header-h:78px;
      --ease:all .25s ease;
    }

    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      line-height:1.75;
      color:var(--text);
      background:
        radial-gradient(circle at 6% 8%, rgba(124,58,237,.12), transparent 28%),
        radial-gradient(circle at 95% 22%, rgba(15,118,110,.10), transparent 25%),
        linear-gradient(180deg,#fff 0%,var(--bg) 38%,#fff 100%);
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;height:auto;display:block}
    button,input,textarea{font:inherit}
    ::selection{background:var(--primary);color:#fff}

    .container{width:min(var(--container), calc(100% - 40px));margin:0 auto}
    .skip-link{
      position:absolute;left:-999px;top:10px;background:#111827;color:#fff;
      padding:10px 14px;border-radius:10px;z-index:999
    }
    .skip-link:focus{left:16px;outline:3px solid var(--accent)}

    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:blur(18px);
      background:rgba(255,255,255,.82);
      border-bottom:1px solid rgba(229,231,235,.82);
    }
    .nav-wrap{
      min-height:var(--header-h);
      display:flex;align-items:center;justify-content:space-between;gap:26px;
    }
    .brand{
      display:flex;align-items:center;gap:12px;min-width:0;
      font-weight:900;letter-spacing:-.02em;color:var(--primary-dark)
    }
    .brand-mark{
      width:46px;height:46px;border-radius:16px;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      color:#fff;display:grid;place-items:center;
      box-shadow:0 12px 28px rgba(124,58,237,.25);
      flex:none;
    }
    .brand-text{font-size:18px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .nav-links{display:flex;align-items:center;gap:8px}
    .nav-links a{
      padding:10px 16px;border-radius:999px;color:#4b5563;font-weight:700;
      transition:var(--ease);border:1px solid transparent
    }
    .nav-links a:hover,.nav-links a:focus{
      color:var(--primary-dark);background:var(--primary-soft);outline:none
    }
    .nav-links a.active{
      color:#fff;background:var(--primary);box-shadow:0 10px 22px rgba(124,58,237,.22)
    }
    .nav-actions{display:flex;align-items:center;gap:12px}
    .menu-toggle{
      display:none;width:44px;height:44px;border:1px solid var(--border);
      border-radius:14px;background:#fff;color:var(--text);cursor:pointer;
      transition:var(--ease)
    }
    .menu-toggle:hover,.menu-toggle:focus{border-color:var(--primary);box-shadow:var(--shadow-sm);outline:none}

    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:0;border-radius:999px;padding:13px 20px;font-weight:800;
      cursor:pointer;transition:var(--ease);white-space:nowrap;
    }
    .btn-primary{
      color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary-dark));
      box-shadow:0 15px 34px rgba(124,58,237,.28)
    }
    .btn-primary:hover,.btn-primary:focus{transform:translateY(-2px);box-shadow:0 20px 44px rgba(124,58,237,.34);outline:none}
    .btn-secondary{
      color:var(--primary-dark);background:#fff;border:1px solid rgba(124,58,237,.22)
    }
    .btn-secondary:hover,.btn-secondary:focus{background:var(--primary-soft);border-color:var(--primary);outline:none}
    .btn-ghost{
      color:#374151;background:rgba(255,255,255,.75);border:1px solid var(--border)
    }
    .btn-ghost:hover,.btn-ghost:focus{color:var(--secondary);border-color:rgba(15,118,110,.35);outline:none}

    .hero{
      position:relative;isolation:isolate;
      padding:78px 0 72px;
      background-image:
        linear-gradient(90deg, rgba(22,20,36,.78) 0%, rgba(22,20,36,.55) 48%, rgba(22,20,36,.16) 100%),
        url('/assets/images/backpic/back-1.webp');
      background-size:cover;background-position:center;
      color:#fff;overflow:hidden;
    }
    .hero:after{
      content:"";position:absolute;inset:auto -10% -120px -10%;height:220px;
      background:linear-gradient(180deg,transparent,rgba(251,250,248,.95) 72%,var(--bg));
      z-index:-1;
    }
    .hero-grid{
      display:grid;grid-template-columns:minmax(0,1.1fr) minmax(300px,.78fr);
      gap:44px;align-items:center;
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;
      background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.22);
      color:#fef3c7;font-weight:800;font-size:14px;margin-bottom:18px;
      backdrop-filter:blur(8px);
    }
    .hero h1{
      font-size:clamp(34px,5.5vw,66px);
      line-height:1.08;letter-spacing:-.055em;margin-bottom:22px;
      max-width:850px;
    }
    .hero-subtitle{
      font-size:clamp(16px,2vw,20px);
      color:rgba(255,255,255,.88);
      max-width:780px;margin-bottom:30px;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
    .trust-row{display:flex;flex-wrap:wrap;gap:12px;color:rgba(255,255,255,.86)}
    .trust-pill{
      display:inline-flex;align-items:center;gap:8px;padding:9px 12px;border-radius:999px;
      background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);
      font-size:14px;
    }
    .hero-panel{
      background:rgba(255,255,255,.92);color:var(--text);
      border:1px solid rgba(255,255,255,.65);
      border-radius:var(--radius-lg);
      padding:26px;box-shadow:var(--shadow-lg);
      backdrop-filter:blur(16px);
    }
    .panel-title{font-size:22px;font-weight:900;margin-bottom:8px;color:#111827}
    .panel-desc{color:var(--muted);font-size:15px;margin-bottom:20px}
    .check-list{display:grid;gap:13px;list-style:none}
    .check-list li{
      display:grid;grid-template-columns:28px 1fr;gap:10px;align-items:start;
      padding:12px;border-radius:16px;background:#fafafa;border:1px solid var(--border);
    }
    .check-icon{
      width:28px;height:28px;border-radius:50%;
      display:grid;place-items:center;background:var(--primary-soft);color:var(--primary-dark);
      font-weight:900;
    }

    main{position:relative}
    .section{padding:76px 0}
    .section.alt{background:linear-gradient(180deg,rgba(245,243,255,.78),rgba(255,255,255,.9))}
    .section-head{
      display:flex;align-items:end;justify-content:space-between;gap:24px;
      margin-bottom:34px;
    }
    .section-kicker{
      color:var(--primary);font-weight:900;letter-spacing:.04em;
      margin-bottom:8px;font-size:14px;
    }
    .section-title{
      font-size:clamp(26px,3vw,42px);
      line-height:1.18;letter-spacing:-.035em;color:#111827;
    }
    .section-desc{color:var(--muted);max-width:660px;margin-top:12px}
    .badge{
      display:inline-flex;align-items:center;gap:6px;
      border-radius:999px;padding:7px 11px;
      color:var(--primary-dark);background:var(--primary-soft);
      font-weight:800;font-size:13px;
    }

    .feature-grid{
      display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;
    }
    .feature-card{
      background:var(--surface);border:1px solid var(--border);
      border-radius:var(--radius);padding:26px;
      box-shadow:var(--shadow-sm);transition:var(--ease);
      position:relative;overflow:hidden;
    }
    .feature-card:before{
      content:"";position:absolute;left:0;top:0;width:100%;height:5px;
      background:linear-gradient(90deg,var(--primary),var(--secondary));
      opacity:.9;
    }
    .feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:var(--border-strong)}
    .feature-icon{
      width:52px;height:52px;border-radius:18px;
      display:grid;place-items:center;margin-bottom:18px;
      background:linear-gradient(135deg,var(--primary-soft),#ccfbf1);
      color:var(--primary-dark);font-size:24px;font-weight:900;
    }
    .feature-card h3{font-size:21px;margin-bottom:10px;color:#111827}
    .feature-card p{color:var(--muted)}

    .story-block{
      display:grid;grid-template-columns:.92fr 1.08fr;gap:34px;align-items:center;
    }
    .image-card{
      position:relative;border-radius:var(--radius-lg);overflow:hidden;
      min-height:420px;box-shadow:var(--shadow-lg);background:#111827;
    }
    .image-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
    .image-card:after{
      content:"";position:absolute;inset:0;
      background:linear-gradient(180deg,transparent 25%,rgba(17,24,39,.78));
    }
    .image-caption{
      position:absolute;left:24px;right:24px;bottom:24px;z-index:2;
      color:#fff;
    }
    .image-caption strong{display:block;font-size:24px;line-height:1.25;margin-bottom:8px}
    .image-caption span{color:rgba(255,255,255,.82)}
    .info-stack{display:grid;gap:16px}
    .info-item{
      display:grid;grid-template-columns:46px 1fr;gap:14px;
      padding:20px;border-radius:var(--radius);
      background:#fff;border:1px solid var(--border);box-shadow:var(--shadow-sm);
    }
    .info-num{
      width:46px;height:46px;border-radius:16px;
      display:grid;place-items:center;color:#fff;font-weight:900;
      background:linear-gradient(135deg,var(--secondary),var(--primary));
    }
    .info-item h3{font-size:19px;margin-bottom:6px}
    .info-item p{color:var(--muted)}

    .topic-grid{
      display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
    }
    .topic-card{
      min-height:190px;border-radius:var(--radius);padding:22px;
      background:#fff;border:1px solid var(--border);
      box-shadow:var(--shadow-sm);transition:var(--ease);
      display:flex;flex-direction:column;justify-content:space-between;
    }
    .topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
    .topic-card h3{font-size:19px;line-height:1.35;margin-bottom:10px}
    .topic-card p{color:var(--muted);font-size:15px}
    .topic-link{margin-top:18px;color:var(--primary-dark);font-weight:900}

    .media-row{
      display:grid;grid-template-columns:1fr 1fr;gap:24px;
    }
    .media-card{
      border-radius:var(--radius-lg);overflow:hidden;background:#fff;border:1px solid var(--border);
      box-shadow:var(--shadow-sm);transition:var(--ease);
    }
    .media-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
    .media-card img{width:100%;height:250px;object-fit:cover}
    .media-body{padding:24px}
    .media-meta{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:12px}
    .media-body h3{font-size:23px;line-height:1.32;margin-bottom:10px}
    .media-body p{color:var(--muted)}

    .latest-wrap{
      background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
      box-shadow:var(--shadow-md);overflow:hidden;
    }
    .latest-list{display:grid}
    .latest-item{
      display:grid;grid-template-columns:150px 1fr auto;gap:20px;align-items:center;
      padding:22px 24px;border-bottom:1px solid var(--border);
      transition:var(--ease);
    }
    .latest-item:last-child{border-bottom:0}
    .latest-item:hover{background:#faf5ff}
    .latest-cat{
      justify-self:start;border-radius:999px;padding:7px 10px;
      background:#ecfeff;color:#0f766e;font-weight:900;font-size:13px;
    }
    .latest-main h3{font-size:18px;line-height:1.35;margin-bottom:6px}
    .latest-main p{color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .latest-date{color:var(--light);font-weight:700;font-size:14px;white-space:nowrap}
    .empty-state{
      padding:34px;text-align:center;color:var(--muted);background:#fff;
    }

    .proof{
      background:
        linear-gradient(135deg,rgba(124,58,237,.92),rgba(15,118,110,.9)),
        url('/assets/images/backpic/back-2.jpg');
      background-size:cover;background-position:center;
      color:#fff;
    }
    .proof .section-title,.proof .section-kicker{color:#fff}
    .proof .section-desc{color:rgba(255,255,255,.82)}
    .stats-grid{
      display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:30px;
    }
    .stat-card{
      padding:24px;border-radius:var(--radius);
      background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.22);
      backdrop-filter:blur(10px);
    }
    .stat-value{font-size:34px;font-weight:950;letter-spacing:-.04em;margin-bottom:4px}
    .stat-label{color:rgba(255,255,255,.84)}

    .faq-layout{
      display:grid;grid-template-columns:.8fr 1.2fr;gap:34px;align-items:start;
    }
    .faq-aside{
      position:sticky;top:104px;padding:26px;border-radius:var(--radius-lg);
      background:var(--surface-soft);border:1px solid #fed7aa;
    }
    .faq-aside h2{font-size:26px;line-height:1.25;margin-bottom:12px}
    .faq-aside p{color:#7c2d12}
    .faq-list{display:grid;gap:14px}
    details{
      background:#fff;border:1px solid var(--border);
      border-radius:18px;padding:0;box-shadow:var(--shadow-sm);
      overflow:hidden;
    }
    details[open]{border-color:var(--border-strong)}
    summary{
      list-style:none;cursor:pointer;padding:20px 22px;font-weight:900;
      display:flex;align-items:center;justify-content:space-between;gap:14px;
    }
    summary::-webkit-details-marker{display:none}
    summary:after{
      content:"+";width:28px;height:28px;border-radius:50%;
      display:grid;place-items:center;background:var(--primary-soft);
      color:var(--primary-dark);font-weight:900;flex:none;
    }
    details[open] summary:after{content:"−"}
    .faq-answer{padding:0 22px 22px;color:var(--muted)}

    .contact-card{
      display:grid;grid-template-columns:1fr .86fr;gap:26px;
      border-radius:var(--radius-lg);padding:34px;
      background:
        radial-gradient(circle at 10% 10%,rgba(255,255,255,.28),transparent 28%),
        linear-gradient(135deg,#1f1b3f,#4c1d95 52%,#0f766e);
      color:#fff;box-shadow:var(--shadow-lg);overflow:hidden;
    }
    .contact-card h2{font-size:clamp(28px,3.8vw,46px);line-height:1.15;letter-spacing:-.04em;margin-bottom:14px}
    .contact-card p{color:rgba(255,255,255,.84);max-width:720px}
    .contact-form{
      background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
      border-radius:24px;padding:22px;backdrop-filter:blur(12px);
    }
    .field{display:grid;gap:8px;margin-bottom:14px}
    .field label{font-weight:800;color:#fff}
    .field input,.field textarea{
      width:100%;border:1px solid rgba(255,255,255,.28);
      border-radius:14px;padding:13px 14px;background:rgba(255,255,255,.92);
      color:#111827;outline:none;transition:var(--ease);
    }
    .field input:focus,.field textarea:focus{border-color:#fde68a;box-shadow:0 0 0 4px rgba(253,230,138,.22)}
    .field textarea{min-height:108px;resize:vertical}
    .form-note{font-size:13px;color:rgba(255,255,255,.78);margin-top:10px}

    .site-footer{
      background:#111827;color:#d1d5db;padding:46px 0 24px;
    }
    .footer-grid{
      display:grid;grid-template-columns:1.1fr .7fr .7fr;gap:28px;margin-bottom:28px;
    }
    .footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:950;font-size:18px;margin-bottom:12px}
    .footer-brand .brand-mark{width:42px;height:42px}
    .footer-desc{color:#9ca3af;max-width:560px}
    .footer-col h3{color:#fff;font-size:16px;margin-bottom:12px}
    .footer-links{display:grid;gap:9px;list-style:none}
    .footer-links a{color:#9ca3af;transition:var(--ease)}
    .footer-links a:hover,.footer-links a:focus{color:#fff;outline:none}
    .copyright{
      border-top:1px solid rgba(255,255,255,.1);padding-top:20px;
      display:flex;align-items:center;justify-content:space-between;gap:14px;
      color:#9ca3af;font-size:14px;flex-wrap:wrap;
    }

    @media (max-width:1024px){
      .hero-grid,.story-block,.faq-layout,.contact-card{grid-template-columns:1fr}
      .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .topic-grid,.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .faq-aside{position:static}
      .hero-panel{max-width:720px}
    }
    @media (max-width:768px){
      :root{--header-h:68px}
      .container{width:min(100% - 28px,var(--container))}
      .menu-toggle{display:grid;place-items:center}
      .nav-actions .btn{display:none}
      .nav-links{
        position:absolute;left:14px;right:14px;top:calc(var(--header-h) + 8px);
        background:#fff;border:1px solid var(--border);border-radius:20px;
        box-shadow:var(--shadow-md);padding:10px;display:none;flex-direction:column;align-items:stretch;
      }
      .nav-links.open{display:flex}
      .nav-links a{text-align:center}
      .brand-text{max-width:220px}
      .hero{padding:54px 0 58px}
      .hero-actions{flex-direction:column;align-items:stretch}
      .btn{width:100%}
      .section{padding:58px 0}
      .section-head{display:block}
      .feature-grid,.media-row,.footer-grid{grid-template-columns:1fr}
      .latest-item{grid-template-columns:1fr;gap:10px}
      .latest-date{white-space:normal}
      .image-card{min-height:340px}
      .contact-card{padding:24px}
    }
    @media (max-width:520px){
      .brand-text{font-size:15px;max-width:180px}
      .hero h1{font-size:34px}
      .topic-grid,.stats-grid{grid-template-columns:1fr}
      .feature-card,.media-body,.contact-form{padding:20px}
      .section-title{font-size:27px}
      .trust-pill{width:100%;justify-content:center}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:8px}
    }

/* roulang page: article */
:root{
      --primary:#7c3aed;
      --primary-dark:#5b21b6;
      --primary-soft:#ede9fe;
      --secondary:#0f766e;
      --accent:#f59e0b;
      --danger:#e11d48;
      --bg:#fbfaf8;
      --bg-2:#f5f3ff;
      --surface:#ffffff;
      --surface-soft:#fff7ed;
      --text:#1f2937;
      --muted:#667085;
      --light:#9ca3af;
      --border:#e5e7eb;
      --border-strong:#d8b4fe;
      --shadow-sm:0 8px 22px rgba(31,41,55,.08);
      --shadow-md:0 18px 45px rgba(76,29,149,.14);
      --shadow-lg:0 28px 80px rgba(31,41,55,.18);
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:30px;
      --container:1180px;
      --header-h:68px;
      --ease:all .25s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:
        radial-gradient(circle at 5% 10%,rgba(124,58,237,.1),transparent 27%),
        radial-gradient(circle at 96% 30%,rgba(15,118,110,.08),transparent 24%),
        linear-gradient(180deg,#fff 0%,var(--bg) 45%,#fff 100%);
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input,textarea{font:inherit}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}

    .site-header{
      position:sticky;
      top:0;
      z-index:20;
      background:rgba(255,255,255,.86);
      border-bottom:1px solid rgba(229,231,235,.86);
      backdrop-filter:blur(18px);
    }
    .nav-wrap{
      min-height:var(--header-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:26px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      color:var(--primary-dark);
      font-weight:900;
    }
    .brand-mark{
      width:44px;
      height:44px;
      flex:none;
      display:grid;
      place-items:center;
      border-radius:15px;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 12px 28px rgba(124,58,237,.25);
    }
    .brand-text{
      max-width:280px;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
      font-size:18px;
    }
    .nav-links{display:flex;align-items:center;gap:8px}
    .nav-links a{
      padding:9px 16px;
      border:1px solid transparent;
      border-radius:999px;
      color:#4b5563;
      font-weight:700;
      transition:var(--ease);
    }
    .nav-links a:hover,.nav-links a:focus{
      color:var(--primary-dark);
      background:var(--primary-soft);
      outline:none;
    }
    .nav-links a.active{
      color:#fff;
      background:var(--primary);
      box-shadow:0 10px 22px rgba(124,58,237,.22);
    }
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border:1px solid var(--border);
      border-radius:14px;
      color:var(--text);
      background:#fff;
      cursor:pointer;
      transition:var(--ease);
    }
    .menu-toggle:hover,.menu-toggle:focus{
      border-color:var(--primary);
      box-shadow:var(--shadow-sm);
      outline:none;
    }

    .article-banner{
      position:relative;
      isolation:isolate;
      padding:62px 0 70px;
      color:#fff;
      background-image:
        linear-gradient(105deg,rgba(25,18,45,.86),rgba(25,18,45,.58) 58%,rgba(15,118,110,.3)),
        url('/assets/images/backpic/back-2.jpg');
      background-size:cover;
      background-position:center;
      overflow:hidden;
    }
    .article-banner:after{
      content:"";
      position:absolute;
      left:0;
      right:0;
      bottom:-1px;
      height:65px;
      background:linear-gradient(180deg,transparent,var(--bg));
      pointer-events:none;
    }
    .breadcrumb{
      position:relative;
      z-index:1;
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin:0 0 20px;
      color:rgba(255,255,255,.75);
      font-size:14px;
    }
    .breadcrumb a:hover{color:#fff}
    .article-banner h1{
      position:relative;
      z-index:1;
      max-width:900px;
      margin:0 0 18px;
      color:#fff;
      font-size:clamp(30px,5vw,58px);
      line-height:1.16;
      letter-spacing:-.04em;
      overflow-wrap:anywhere;
    }
    .banner-summary{
      position:relative;
      z-index:1;
      max-width:760px;
      margin:0;
      color:rgba(255,255,255,.88);
      font-size:18px;
    }

    main{position:relative}
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      gap:34px;
      align-items:start;
      padding:70px 0 82px;
    }
    .article-card{
      min-width:0;
      padding:clamp(24px,4vw,48px);
      border:1px solid rgba(229,231,235,.92);
      border-radius:var(--radius-lg);
      background:rgba(255,255,255,.92);
      box-shadow:var(--shadow-md);
    }
    .article-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px 18px;
      align-items:center;
      padding-bottom:22px;
      margin-bottom:28px;
      border-bottom:1px solid var(--border);
      color:var(--muted);
      font-size:14px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      min-height:30px;
      padding:4px 12px;
      border-radius:999px;
      color:var(--primary-dark);
      background:var(--primary-soft);
      font-weight:800;
    }
    .article-content{
      color:#374151;
      font-size:17px;
      overflow-wrap:anywhere;
    }
    .article-content h2{
      margin:34px 0 12px;
      color:#111827;
      font-size:clamp(23px,3vw,31px);
      line-height:1.3;
    }
    .article-content h3{
      margin:26px 0 10px;
      color:#1f2937;
      font-size:21px;
    }
    .article-content p{margin:0 0 18px}
    .article-content ul,.article-content ol{
      padding-left:24px;
      margin:0 0 22px;
    }
    .article-content li{margin:7px 0}
    .article-content blockquote{
      margin:26px 0;
      padding:18px 22px;
      border-left:4px solid var(--secondary);
      border-radius:0 var(--radius-sm) var(--radius-sm) 0;
      color:#115e59;
      background:#ecfdf5;
    }
    .article-content img{
      width:100%;
      margin:26px 0;
      border-radius:var(--radius);
      box-shadow:var(--shadow-sm);
    }
    .article-content a{
      color:var(--primary-dark);
      text-decoration:underline;
      text-decoration-color:rgba(124,58,237,.35);
      text-underline-offset:3px;
    }
    .article-content a:hover{color:var(--secondary)}

    .side-column{display:grid;gap:20px}
    .side-card{
      padding:24px;
      border:1px solid var(--border);
      border-radius:var(--radius);
      background:var(--surface);
      box-shadow:var(--shadow-sm);
    }
    .side-card.featured{padding:0;overflow:hidden}
    .side-card.featured img{
      width:100%;
      aspect-ratio:1.5;
      object-fit:cover;
    }
    .side-card-body{padding:22px}
    .side-card h2{
      margin:0 0 12px;
      color:#111827;
      font-size:21px;
      line-height:1.35;
    }
    .side-card p{margin:0;color:var(--muted);font-size:15px}
    .side-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}
    .side-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#4b5563;
      font-size:15px;
    }
    .side-list li:before{
      content:"✓";
      flex:none;
      width:22px;
      height:22px;
      display:grid;
      place-items:center;
      margin-top:3px;
      border-radius:50%;
      color:#fff;
      background:var(--secondary);
      font-size:12px;
      font-weight:900;
    }
    .notice{
      border-color:#fed7aa;
      background:var(--surface-soft);
    }
    .notice h2{color:#9a3412}
    .notice p{color:#7c2d12}

    .related-section{
      padding:76px 0;
      background:linear-gradient(180deg,rgba(245,243,255,.78),rgba(255,255,255,.9));
    }
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:28px;
    }
    .section-kicker{
      margin:0 0 7px;
      color:var(--secondary);
      font-size:13px;
      font-weight:900;
      letter-spacing:.08em;
    }
    .section-head h2{
      margin:0;
      color:#111827;
      font-size:clamp(26px,4vw,38px);
      line-height:1.25;
    }
    .section-link{
      color:var(--primary-dark);
      font-weight:800;
      white-space:nowrap;
    }
    .section-link:hover{text-decoration:underline}
    .related-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:20px;
    }
    .topic-card{
      overflow:hidden;
      border:1px solid var(--border);
      border-radius:var(--radius);
      background:#fff;
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
    }
    .topic-card:hover{
      transform:translateY(-5px);
      border-color:var(--border-strong);
      box-shadow:var(--shadow-md);
    }
    .topic-card img{
      width:100%;
      aspect-ratio:1.75;
      object-fit:cover;
    }
    .topic-body{padding:21px}
    .topic-body h3{
      margin:0 0 8px;
      color:#111827;
      font-size:19px;
      line-height:1.4;
    }
    .topic-body p{margin:0;color:var(--muted);font-size:15px}

    .cta-section{padding:72px 0}
    .cta-box{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:28px;
      padding:34px 40px;
      border-radius:var(--radius-lg);
      color:#fff;
      background:linear-gradient(115deg,var(--primary-dark),var(--secondary));
      box-shadow:var(--shadow-lg);
    }
    .cta-box h2{margin:0 0 8px;font-size:clamp(24px,3vw,34px);line-height:1.3}
    .cta-box p{max-width:650px;margin:0;color:rgba(255,255,255,.82)}
    .cta-box .btn{
      flex:none;
      color:var(--primary-dark);
      background:#fff;
    }
    .cta-box .btn:hover,.cta-box .btn:focus{
      background:#fef3c7;
      outline:none;
    }

    .site-footer{
      padding:58px 0 22px;
      color:#cbd5e1;
      background:#171329;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.5fr .7fr .9fr;
      gap:40px;
      padding-bottom:38px;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      font-weight:900;
    }
    .footer-brand .brand-mark{width:40px;height:40px;border-radius:13px}
    .footer-desc{max-width:520px;margin:17px 0 0;color:#a8aabd;font-size:15px}
    .footer-col h3{margin:0 0 15px;color:#fff;font-size:16px}
    .footer-links{display:grid;gap:9px;padding:0;margin:0;list-style:none}
    .footer-links a{color:#a8aabd;font-size:15px;transition:var(--ease)}
    .footer-links a:hover,.footer-links a:focus{color:#fff;outline:none}
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:20px;
      padding-top:20px;
      border-top:1px solid rgba(255,255,255,.12);
      color:#85889e;
      font-size:13px;
    }

    @media (max-width:1024px){
      .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:24px}
      .cta-box{padding:30px}
    }
    @media (max-width:768px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .menu-toggle{display:block}
      .nav-links{
        display:none;
        position:absolute;
        top:calc(100% + 1px);
        left:16px;
        right:16px;
        padding:10px;
        flex-direction:column;
        align-items:stretch;
        border:1px solid var(--border);
        border-radius:18px;
        background:#fff;
        box-shadow:var(--shadow-md);
      }
      .nav-links.open{display:flex}
      .nav-links a{padding:12px 15px}
      .article-banner{padding:48px 0 58px}
      .article-layout{display:block;padding:48px 0 60px}
      .side-column{margin-top:24px;grid-template-columns:repeat(2,minmax(0,1fr))}
      .side-card.featured{grid-column:1/-1}
      .related-section,.cta-section{padding:58px 0}
      .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .cta-box{display:block}
      .cta-box .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1.4fr 1fr}
      .footer-col:last-child{grid-column:2}
    }
    @media (max-width:520px){
      .brand-text{max-width:210px;font-size:16px}
      .article-banner h1{font-size:33px}
      .banner-summary{font-size:16px}
      .article-card{padding:22px 18px;border-radius:22px}
      .article-content{font-size:16px}
      .side-column,.related-grid{grid-template-columns:1fr}
      .side-card.featured{grid-column:auto}
      .section-head{display:block}
      .section-link{display:inline-block;margin-top:10px}
      .cta-box{padding:26px 22px;border-radius:22px}
      .footer-grid{grid-template-columns:1fr;gap:28px}
      .footer-col:last-child{grid-column:auto}
      .copyright{display:block}
      .copyright span{display:block;margin-top:7px}
    }

/* 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}