/* roulang page: index */
:root{
      --bg:#f7fafc;
      --surface:#ffffff;
      --surface-2:#eef6ff;
      --text:#102033;
      --muted:#5f7087;
      --weak:#8ba0b7;
      --primary:#1463ff;
      --primary-dark:#0d47c8;
      --primary-soft:#e8f0ff;
      --accent:#18b981;
      --accent-soft:#e9fff6;
      --warning:#f59e0b;
      --danger:#e5484d;
      --border:#dce6f2;
      --shadow:0 18px 45px rgba(16,32,51,.10);
      --shadow-soft:0 10px 28px rgba(16,32,51,.08);
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:12px;
      --container:1180px;
      --header-h:78px;
      --ease:.24s 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:1.7;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 4%, rgba(20,99,255,.10), transparent 30%),
        radial-gradient(circle at 88% 16%, rgba(24,185,129,.12), transparent 28%),
        var(--bg);
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{border:0;cursor:pointer}
    .container{width:min(var(--container), calc(100% - 40px));margin:0 auto}
    .skip-link{
      position:absolute;left:-999px;top:10px;
      background:var(--primary);color:#fff;padding:10px 14px;border-radius:10px;z-index:999;
    }
    .skip-link:focus{left:16px;outline:3px solid rgba(20,99,255,.25)}
    .site-header{
      position:sticky;top:0;z-index:50;
      background:rgba(255,255,255,.82);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(220,230,242,.82);
    }
    .nav{
      height:var(--header-h);
      display:flex;align-items:center;justify-content:space-between;gap:24px;
    }
    .brand{
      display:flex;align-items:center;gap:12px;min-width:0;
    }
    .brand-mark{
      width:42px;height:42px;border-radius:14px;
      background:linear-gradient(135deg,var(--primary),#62c8ff);
      box-shadow:0 12px 26px rgba(20,99,255,.24);
      display:grid;place-items:center;color:#fff;font-weight:900;
      flex:0 0 auto;
    }
    .brand-name{
      font-weight:900;letter-spacing:-.02em;font-size:18px;
      white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
    }
    .nav-links{
      display:flex;align-items:center;gap:8px;
    }
    .nav-link{
      padding:10px 14px;border-radius:999px;color:var(--muted);font-weight:700;
      transition:background var(--ease),color var(--ease),transform var(--ease);
    }
    .nav-link:hover,.nav-link:focus{
      color:var(--primary);background:var(--primary-soft);outline:none;
    }
    .nav-link.active{
      color:#fff;background:var(--primary);
      box-shadow:0 10px 22px rgba(20,99,255,.22);
    }
    .nav-actions{display:flex;align-items:center;gap:10px}
    .menu-toggle{
      display:none;
      width:44px;height:44px;border-radius:14px;
      background:var(--surface-2);color:var(--text);
    }
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:44px;padding:12px 18px;border-radius:999px;
      font-weight:800;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
      border:1px solid transparent;
    }
    .btn:focus{outline:3px solid rgba(20,99,255,.22);outline-offset:2px}
    .btn-primary{
      color:#fff;background:linear-gradient(135deg,var(--primary),#38a4ff);
      box-shadow:0 14px 26px rgba(20,99,255,.24);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 32px rgba(20,99,255,.30)}
    .btn-secondary{
      background:#fff;color:var(--primary);border-color:var(--border);
      box-shadow:0 10px 20px rgba(16,32,51,.06);
    }
    .btn-secondary:hover{transform:translateY(-2px);border-color:#b8cdf2}
    .btn-soft{
      color:var(--primary);background:var(--primary-soft);
    }
    .btn-soft:hover{background:#dbe8ff;transform:translateY(-1px)}
    .hero{
      position:relative;
      padding:86px 0 58px;
      min-height:650px;
      display:flex;align-items:center;
      overflow:hidden;
    }
    .hero::before{
      content:"";
      position:absolute;inset:0;
      background:
        linear-gradient(90deg, rgba(9,22,43,.88), rgba(9,22,43,.58) 52%, rgba(9,22,43,.28)),
        url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
      z-index:-2;
    }
    .hero::after{
      content:"";
      position:absolute;right:-120px;bottom:-180px;width:520px;height:520px;border-radius:50%;
      background:rgba(24,185,129,.22);filter:blur(12px);z-index:-1;
    }
    .hero-inner{
      display:grid;grid-template-columns:1.05fr .95fr;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);color:#eaf3ff;
      border:1px solid rgba(255,255,255,.22);
      font-weight:800;font-size:14px;
    }
    .hero h1{
      margin-top:20px;
      font-size:clamp(40px,5.2vw,72px);
      line-height:1.05;color:#fff;letter-spacing:-.05em;
      max-width:820px;
    }
    .hero-subtitle{
      margin-top:22px;max-width:720px;
      color:rgba(255,255,255,.84);
      font-size:19px;line-height:1.9;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
    .hero-note{
      margin-top:22px;color:rgba(255,255,255,.72);font-size:14px;
      display:flex;gap:10px;align-items:flex-start;
    }
    .hero-panel{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(255,255,255,.55);
      border-radius:var(--radius-xl);
      padding:26px;
      box-shadow:var(--shadow);
      backdrop-filter:blur(12px);
    }
    .quick-report{
      display:grid;gap:16px;
    }
    .panel-title{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      margin-bottom:4px;
    }
    .panel-title h2{font-size:22px;letter-spacing:-.02em}
    .status-badge{
      padding:7px 10px;border-radius:999px;background:var(--accent-soft);color:#087a52;
      font-size:13px;font-weight:900;white-space:nowrap;
    }
    .step{
      display:grid;grid-template-columns:42px 1fr;gap:14px;align-items:start;
      padding:16px;border:1px solid var(--border);border-radius:var(--radius-md);
      background:linear-gradient(180deg,#fff,#f9fbff);
      transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
    }
    .step:hover{transform:translateY(-2px);box-shadow:var(--shadow-soft);border-color:#c8d8ed}
    .step-num{
      width:42px;height:42px;border-radius:14px;
      display:grid;place-items:center;background:var(--primary-soft);color:var(--primary);font-weight:950;
    }
    .step h3{font-size:16px;margin-bottom:3px}
    .step p{color:var(--muted);font-size:14px}
    main{position:relative}
    .section{padding:78px 0}
    .section.compact{padding:56px 0}
    .section-head{
      display:flex;align-items:end;justify-content:space-between;gap:24px;
      margin-bottom:30px;
    }
    .section-kicker{
      display:inline-flex;align-items:center;gap:8px;
      color:var(--primary);font-weight:900;margin-bottom:8px;
    }
    .section-title{
      font-size:clamp(28px,3.2vw,44px);
      line-height:1.18;letter-spacing:-.04em;
    }
    .section-desc{
      color:var(--muted);max-width:650px;margin-top:12px;font-size:16px;
    }
    .grid-3{
      display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
    }
    .grid-2{
      display:grid;grid-template-columns:repeat(2,1fr);gap:24px;
    }
    .card{
      background:rgba(255,255,255,.92);
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:24px;
      box-shadow:0 1px 0 rgba(255,255,255,.7);
      transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
    }
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-soft);border-color:#c7d8ef}
    .icon{
      width:48px;height:48px;border-radius:16px;
      display:grid;place-items:center;margin-bottom:18px;
      background:linear-gradient(135deg,var(--primary-soft),#fff);
      color:var(--primary);font-weight:950;font-size:20px;
      border:1px solid #d9e7ff;
    }
    .card h3{font-size:20px;margin-bottom:9px;letter-spacing:-.02em}
    .card p{color:var(--muted)}
    .tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .tag{
      display:inline-flex;align-items:center;border-radius:999px;
      padding:7px 11px;background:#f2f6fb;color:#51657d;
      border:1px solid var(--border);font-size:13px;font-weight:800;
    }
    .feature-wrap{
      display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:center;
    }
    .image-card{
      position:relative;border-radius:var(--radius-xl);overflow:hidden;min-height:420px;
      box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.7);
      background:#dfeaf7;
    }
    .image-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
    .image-card .image-caption{
      position:absolute;left:22px;right:22px;bottom:22px;
      background:rgba(255,255,255,.90);backdrop-filter:blur(14px);
      border:1px solid rgba(255,255,255,.62);
      border-radius:20px;padding:18px;
      box-shadow:0 14px 34px rgba(16,32,51,.16);
    }
    .image-caption strong{display:block;font-size:18px;margin-bottom:4px}
    .image-caption span{color:var(--muted);font-size:14px}
    .check-list{display:grid;gap:14px;margin-top:22px}
    .check-item{
      display:flex;gap:12px;align-items:flex-start;
      padding:14px;border-radius:16px;background:#fff;border:1px solid var(--border);
    }
    .check-dot{
      width:24px;height:24px;border-radius:50%;background:var(--accent);color:#fff;
      display:grid;place-items:center;font-size:14px;font-weight:900;flex:0 0 auto;margin-top:2px;
    }
    .soft-band{
      background:linear-gradient(135deg,#edf5ff,#f4fff9);
      border-top:1px solid var(--border);
      border-bottom:1px solid var(--border);
    }
    .evidence-grid{
      display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:16px;
    }
    .metric{
      padding:22px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--border);
      box-shadow:0 10px 25px rgba(16,32,51,.05);
    }
    .metric strong{
      display:block;font-size:32px;line-height:1;color:var(--primary);letter-spacing:-.04em;
    }
    .metric span{display:block;margin-top:10px;color:var(--muted)}
    .content-list{
      display:grid;grid-template-columns:1fr;gap:14px;
    }
    .post-item{
      display:grid;grid-template-columns:150px 1fr auto;gap:18px;align-items:center;
      padding:16px;background:#fff;border:1px solid var(--border);border-radius:20px;
      transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
    }
    .post-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-soft);border-color:#bfd2ec}
    .post-thumb{
      height:96px;border-radius:16px;overflow:hidden;background:#dbe8f7;
    }
    .post-thumb img{width:100%;height:100%;object-fit:cover}
    .post-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:7px}
    .post-cat,.post-date{
      font-size:13px;font-weight:800;color:var(--muted);
      background:#f3f7fb;border:1px solid var(--border);padding:4px 9px;border-radius:999px;
    }
    .post-item h3{font-size:19px;line-height:1.35;margin-bottom:6px}
    .post-item p{color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .post-arrow{
      width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
      background:var(--primary-soft);color:var(--primary);font-weight:950;
    }
    .empty-state{
      padding:28px;text-align:center;background:#fff;border:1px dashed #b8c9dd;border-radius:20px;
      color:var(--muted);font-weight:800;
    }
    .resource-cards{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;
    }
    .resource-main{
      min-height:430px;border-radius:var(--radius-xl);overflow:hidden;position:relative;
      background:url('/assets/images/coverpic/cover-2.webp') center/cover no-repeat;
      display:flex;align-items:flex-end;padding:28px;
      box-shadow:var(--shadow);
    }
    .resource-main::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,22,40,.08),rgba(8,22,40,.78))}
    .resource-main-content{position:relative;color:#fff;max-width:650px}
    .resource-main h3{font-size:30px;line-height:1.2;margin-bottom:10px;letter-spacing:-.03em}
    .resource-main p{color:rgba(255,255,255,.82)}
    .resource-side{display:grid;gap:16px}
    .mini-card{
      background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
      padding:20px;display:flex;gap:16px;align-items:flex-start;
      transition:transform var(--ease),box-shadow var(--ease);
    }
    .mini-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-soft)}
    .mini-icon{
      width:42px;height:42px;border-radius:14px;background:var(--accent-soft);color:#087a52;
      display:grid;place-items:center;font-weight:950;flex:0 0 auto;
    }
    .mini-card h3{font-size:18px;margin-bottom:4px}
    .mini-card p{color:var(--muted);font-size:14px}
    .faq{
      display:grid;grid-template-columns:.82fr 1.18fr;gap:28px;align-items:start;
    }
    .faq-list{display:grid;gap:14px}
    details{
      background:#fff;border:1px solid var(--border);border-radius:18px;
      padding:0;overflow:hidden;box-shadow:0 8px 18px rgba(16,32,51,.04);
    }
    summary{
      list-style:none;cursor:pointer;padding:18px 20px;font-weight:900;
      display:flex;justify-content:space-between;gap:18px;align-items:center;
    }
    summary::-webkit-details-marker{display:none}
    summary::after{
      content:"+";
      width:28px;height:28px;border-radius:50%;
      background:var(--primary-soft);color:var(--primary);
      display:grid;place-items:center;font-weight:950;flex:0 0 auto;
    }
    details[open] summary::after{content:"−"}
    details p{padding:0 20px 20px;color:var(--muted)}
    .cta{
      padding:42px;border-radius:32px;
      background:
        linear-gradient(135deg,rgba(20,99,255,.92),rgba(24,185,129,.86)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      color:#fff;position:relative;overflow:hidden;
      box-shadow:var(--shadow);
    }
    .cta::after{
      content:"";position:absolute;right:-90px;top:-120px;width:300px;height:300px;border-radius:50%;
      background:rgba(255,255,255,.18);
    }
    .cta-inner{position:relative;display:flex;justify-content:space-between;align-items:center;gap:30px}
    .cta h2{font-size:clamp(28px,3vw,42px);line-height:1.2;letter-spacing:-.04em}
    .cta p{margin-top:12px;color:rgba(255,255,255,.84);max-width:720px}
    .cta .btn-secondary{border-color:rgba(255,255,255,.35)}
    .contact-box{
      display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:22px;
    }
    .contact-item{
      padding:18px;border-radius:18px;background:rgba(255,255,255,.14);
      border:1px solid rgba(255,255,255,.20);
    }
    .contact-item strong{display:block}
    .contact-item span{color:rgba(255,255,255,.80);font-size:14px}
    .site-footer{
      padding:54px 0 28px;background:#0b1626;color:#d8e2ef;margin-top:78px;
    }
    .footer-grid{
      display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:28px;
      padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.10);
    }
    .footer-brand{
      display:flex;align-items:center;gap:12px;margin-bottom:14px;
    }
    .footer-brand .brand-mark{box-shadow:none}
    .footer-brand strong{font-size:18px}
    .footer-text{color:#9fb0c5;max-width:520px}
    .footer-col h3{font-size:16px;margin-bottom:12px;color:#fff}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:#9fb0c5;transition:color var(--ease),transform var(--ease)}
    .footer-links a:hover{color:#fff;transform:translateX(2px)}
    .copyright{
      padding-top:22px;color:#8fa2ba;font-size:14px;
      display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
    }
    @media (max-width:1024px){
      .hero{padding:70px 0 48px;min-height:auto}
      .hero-inner,.feature-wrap,.faq{grid-template-columns:1fr}
      .hero-panel{max-width:720px}
      .grid-3{grid-template-columns:repeat(2,1fr)}
      .evidence-grid{grid-template-columns:repeat(2,1fr)}
      .resource-cards{grid-template-columns:1fr}
      .section-head{align-items:start;flex-direction:column}
    }
    @media (max-width:768px){
      :root{--header-h:68px}
      .container{width:min(100% - 28px,var(--container))}
      .menu-toggle{display:grid;place-items:center}
      .nav-links{
        position:absolute;left:14px;right:14px;top:calc(var(--header-h) + 8px);
        background:#fff;border:1px solid var(--border);border-radius:20px;
        padding:10px;box-shadow:var(--shadow-soft);
        display:none;flex-direction:column;align-items:stretch;
      }
      .nav-links.open{display:flex}
      .nav-link{text-align:center}
      .nav-actions .btn{display:none}
      .hero h1{font-size:42px}
      .hero-subtitle{font-size:17px}
      .hero-actions{flex-direction:column}
      .hero-actions .btn{width:100%}
      .grid-3,.grid-2,.evidence-grid,.contact-box,.footer-grid{grid-template-columns:1fr}
      .post-item{grid-template-columns:112px 1fr;gap:14px}
      .post-arrow{display:none}
      .post-thumb{height:86px}
      .cta-inner{flex-direction:column;align-items:flex-start}
      .resource-main{min-height:360px}
    }
    @media (max-width:520px){
      .brand-name{font-size:16px;max-width:210px}
      .hero{padding:54px 0 38px}
      .hero h1{font-size:34px}
      .hero-panel{padding:18px;border-radius:22px}
      .section{padding:58px 0}
      .card{padding:20px}
      .feature-wrap{gap:22px}
      .image-card{min-height:320px}
      .post-item{grid-template-columns:1fr}
      .post-thumb{height:180px}
      .resource-main{padding:20px}
      .resource-main h3{font-size:24px}
      .cta{padding:28px;border-radius:24px}
      .copyright{display:block}
    }

/* roulang page: article */
:root{
      --bg:#f7fafc;
      --surface:#ffffff;
      --surface-2:#eef6ff;
      --text:#102033;
      --muted:#5f7087;
      --weak:#8ba0b7;
      --primary:#1463ff;
      --primary-dark:#0d47c8;
      --primary-soft:#e8f0ff;
      --accent:#18b981;
      --accent-soft:#e9fff6;
      --warning:#f59e0b;
      --danger:#e5484d;
      --border:#dce6f2;
      --shadow:0 18px 45px rgba(16,32,51,.10);
      --shadow-soft:0 10px 28px rgba(16,32,51,.08);
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:12px;
      --container:1180px;
      --header-h:68px;
      --ease:.24s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      line-height:1.7;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 4%, rgba(20,99,255,.10), transparent 30%),
        radial-gradient(circle at 88% 16%, rgba(24,185,129,.12), transparent 28%),
        var(--bg);
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{border:0;cursor:pointer}
    ::selection{background:rgba(20,99,255,.18);color:var(--text)}
    .container{width:min(var(--container), calc(100% - 40px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:50;
      background:rgba(255,255,255,.82);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(220,230,242,.82);
    }
    .nav{
      height:var(--header-h);
      display:flex;align-items:center;justify-content:space-between;gap:24px;
    }
    .brand{
      display:flex;align-items:center;gap:12px;min-width:0;
    }
    .brand-mark{
      width:42px;height:42px;border-radius:14px;
      background:linear-gradient(135deg,var(--primary),#62c8ff);
      box-shadow:0 12px 26px rgba(20,99,255,.24);
      display:grid;place-items:center;color:#fff;font-weight:900;
      flex:0 0 auto;
    }
    .brand-name{
      font-weight:900;letter-spacing:-.02em;font-size:18px;
      white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
    }
    .nav-links{display:flex;align-items:center;gap:8px}
    .nav-link{
      padding:10px 14px;border-radius:999px;color:var(--muted);font-weight:700;
      transition:background var(--ease),color var(--ease),transform var(--ease);
    }
    .nav-link:hover,.nav-link:focus{
      color:var(--primary);background:var(--primary-soft);outline:none;
    }
    .nav-link.active{
      color:#fff;background:var(--primary);
      box-shadow:0 10px 22px rgba(20,99,255,.22);
    }
    .nav-actions{display:flex;align-items:center;gap:10px}
    .menu-toggle{
      display:none;
      width:44px;height:44px;border-radius:14px;
      background:var(--surface-2);color:var(--text);
      transition:background var(--ease),transform var(--ease);
    }
    .menu-toggle:hover{background:var(--primary-soft);transform:translateY(-1px)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:44px;padding:12px 18px;border-radius:999px;
      font-weight:800;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
      border:1px solid transparent;
    }
    .btn:focus{outline:3px solid rgba(20,99,255,.22);outline-offset:2px}
    .btn-primary{
      color:#fff;background:linear-gradient(135deg,var(--primary),#38a4ff);
      box-shadow:0 14px 26px rgba(20,99,255,.24);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 32px rgba(20,99,255,.30)}
    .btn-secondary{
      background:#fff;color:var(--primary);border-color:var(--border);
      box-shadow:0 10px 20px rgba(16,32,51,.06);
    }
    .btn-secondary:hover{transform:translateY(-2px);border-color:#b8cdf2}
    .btn-soft{color:var(--primary);background:var(--primary-soft)}
    .btn-soft:hover{background:#dbe8ff;transform:translateY(-1px)}
    main{position:relative}
    .article-hero{
      position:relative;
      padding:70px 0 48px;
      overflow:hidden;
      background:
        linear-gradient(90deg, rgba(9,22,43,.90), rgba(9,22,43,.66) 55%, rgba(9,22,43,.42)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    }
    .article-hero::after{
      content:"";
      position:absolute;right:-160px;bottom:-220px;width:520px;height:520px;border-radius:50%;
      background:rgba(24,185,129,.22);filter:blur(12px);
    }
    .article-hero .container{position:relative;z-index:2}
    .crumbs{
      display:flex;align-items:center;flex-wrap:wrap;gap:10px;
      color:rgba(255,255,255,.72);
      font-size:14px;font-weight:700;
      margin-bottom:20px;
    }
    .crumbs a{transition:color var(--ease)}
    .crumbs a:hover{color:#fff}
    .crumb-sep{opacity:.55}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;
      background:rgba(255,255,255,.14);color:#eaf3ff;
      border:1px solid rgba(255,255,255,.22);
      font-weight:800;font-size:14px;
    }
    .article-hero h1{
      margin:18px 0 0;
      max-width:920px;
      color:#fff;
      font-size:clamp(34px,4.8vw,60px);
      line-height:1.12;
      letter-spacing:-.045em;
      overflow-wrap:anywhere;
    }
    .hero-summary{
      margin-top:18px;
      max-width:840px;
      color:rgba(255,255,255,.82);
      font-size:18px;
      line-height:1.9;
    }
    .article-meta{
      display:flex;align-items:center;flex-wrap:wrap;gap:12px;
      margin-top:26px;
    }
    .meta-pill{
      display:inline-flex;align-items:center;gap:8px;
      padding:9px 12px;border-radius:999px;
      background:rgba(255,255,255,.13);
      border:1px solid rgba(255,255,255,.18);
      color:rgba(255,255,255,.86);
      font-size:14px;font-weight:800;
    }
    .section{padding:76px 0}
    .section.compact{padding:54px 0}
    .section-head{
      display:flex;align-items:end;justify-content:space-between;gap:24px;
      margin-bottom:30px;
    }
    .section-kicker{
      display:inline-flex;align-items:center;gap:8px;
      color:var(--primary);font-weight:900;margin-bottom:8px;
    }
    .section-title{
      font-size:clamp(28px,3.2vw,44px);
      line-height:1.18;letter-spacing:-.04em;
      margin:0;
    }
    .section-desc{
      color:var(--muted);max-width:650px;margin-top:12px;font-size:16px;
    }
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0, 1fr) 340px;
      gap:28px;
      align-items:start;
    }
    .article-card{
      background:rgba(255,255,255,.94);
      border:1px solid rgba(220,230,242,.92);
      border-radius:var(--radius-xl);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .article-cover{
      position:relative;
      min-height:280px;
      background:var(--surface-2);
      overflow:hidden;
    }
    .article-cover img{
      width:100%;
      height:100%;
      min-height:280px;
      object-fit:cover;
      filter:saturate(1.02);
    }
    .article-cover::after{
      content:"";
      position:absolute;inset:0;
      background:linear-gradient(180deg, transparent 45%, rgba(16,32,51,.52));
    }
    .cover-badge{
      position:absolute;left:22px;bottom:20px;z-index:2;
      display:inline-flex;align-items:center;gap:8px;
      padding:9px 12px;border-radius:999px;
      background:rgba(255,255,255,.92);
      color:var(--primary);
      font-weight:900;font-size:14px;
      box-shadow:0 10px 22px rgba(16,32,51,.18);
    }
    .article-body{
      padding:36px;
      font-size:17px;
      color:#21344d;
    }
    .cms-content{
      overflow-wrap:anywhere;
    }
    .cms-content h2,.cms-content h3,.cms-content h4{
      color:var(--text);
      letter-spacing:-.02em;
      margin:1.55em 0 .65em;
      line-height:1.3;
      font-weight:900;
    }
    .cms-content h2{font-size:30px}
    .cms-content h3{font-size:24px}
    .cms-content p{margin:0 0 1.15em}
    .cms-content a{
      color:var(--primary);
      font-weight:800;
      border-bottom:1px solid rgba(20,99,255,.28);
      transition:color var(--ease),border-color var(--ease);
    }
    .cms-content a:hover{color:var(--primary-dark);border-color:var(--primary-dark)}
    .cms-content ul,.cms-content ol{padding-left:1.35em;margin:0 0 1.2em}
    .cms-content li{margin:.42em 0}
    .cms-content blockquote{
      margin:1.4em 0;
      padding:18px 22px;
      border-left:5px solid var(--primary);
      background:var(--primary-soft);
      border-radius:0 var(--radius-md) var(--radius-md) 0;
      color:#254363;
      font-weight:700;
    }
    .cms-content img{
      border-radius:var(--radius-lg);
      margin:22px auto;
      box-shadow:var(--shadow-soft);
    }
    .cms-content table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      overflow:hidden;
      border:1px solid var(--border);
      border-radius:var(--radius-md);
      margin:22px 0;
      font-size:15px;
    }
    .cms-content th,.cms-content td{
      padding:13px 14px;
      border-bottom:1px solid var(--border);
      vertical-align:top;
    }
    .cms-content th{background:var(--surface-2);font-weight:900;color:var(--text)}
    .cms-content tr:last-child td{border-bottom:0}
    .empty-state{
      padding:54px 24px;
      text-align:center;
      background:linear-gradient(180deg,#fff,var(--surface-2));
      border:1px dashed #b9c9df;
      border-radius:var(--radius-lg);
    }
    .empty-state h2{
      font-size:30px;
      margin:0 0 10px;
      letter-spacing:-.03em;
    }
    .empty-state p{color:var(--muted);margin:0 0 22px}
    .sidebar{
      position:sticky;
      top:92px;
      display:grid;
      gap:18px;
    }
    .side-card{
      background:rgba(255,255,255,.94);
      border:1px solid rgba(220,230,242,.92);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-soft);
      padding:22px;
    }
    .side-card h2,.side-card h3{
      font-size:20px;
      line-height:1.35;
      letter-spacing:-.02em;
      margin:0 0 12px;
    }
    .side-card p{
      color:var(--muted);
      margin:0 0 14px;
    }
    .toc-list,.check-list,.resource-list{
      display:grid;
      gap:10px;
      padding:0;
      margin:0;
      list-style:none;
    }
    .toc-list a,.resource-list a{
      display:flex;align-items:center;justify-content:space-between;gap:10px;
      padding:12px 13px;
      border-radius:var(--radius-sm);
      background:var(--surface-2);
      color:#254363;
      font-weight:800;
      transition:background var(--ease),color var(--ease),transform var(--ease);
    }
    .toc-list a:hover,.resource-list a:hover{
      background:var(--primary-soft);
      color:var(--primary);
      transform:translateX(2px);
    }
    .check-list li{
      display:flex;gap:10px;
      color:#29425e;
      padding:10px 0;
      border-bottom:1px solid var(--border);
    }
    .check-list li:last-child{border-bottom:0}
    .check-icon{
      width:22px;height:22px;border-radius:999px;
      background:var(--accent-soft);
      color:#087a52;
      display:grid;place-items:center;
      font-weight:900;
      flex:0 0 auto;
      margin-top:2px;
      font-size:13px;
    }
    .notice-card{
      border-color:rgba(229,72,77,.18);
      background:linear-gradient(180deg,#fff,#fff7f7);
    }
    .notice-tag{
      display:inline-flex;
      padding:6px 10px;
      border-radius:999px;
      background:#ffe8e9;
      color:#b4232a;
      font-weight:900;
      font-size:13px;
      margin-bottom:10px;
    }
    .grid-3{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:20px;
    }
    .info-card{
      background:rgba(255,255,255,.94);
      border:1px solid rgba(220,230,242,.92);
      border-radius:var(--radius-lg);
      padding:24px;
      box-shadow:var(--shadow-soft);
      transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
    }
    .info-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow);
      border-color:#c8d7eb;
    }
    .info-icon{
      width:48px;height:48px;border-radius:16px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,var(--primary-soft),#fff);
      color:var(--primary);
      font-weight:900;
      margin-bottom:16px;
    }
    .info-card h3{
      font-size:21px;
      margin:0 0 10px;
      letter-spacing:-.02em;
    }
    .info-card p{color:var(--muted);margin:0}
    .split{
      display:grid;
      grid-template-columns:.95fr 1.05fr;
      gap:28px;
      align-items:center;
    }
    .image-card{
      position:relative;
      border-radius:var(--radius-xl);
      overflow:hidden;
      min-height:360px;
      box-shadow:var(--shadow);
      border:1px solid rgba(255,255,255,.65);
    }
    .image-card img{
      width:100%;height:100%;min-height:360px;object-fit:cover;
    }
    .image-caption{
      position:absolute;left:18px;right:18px;bottom:18px;
      background:rgba(255,255,255,.92);
      border:1px solid rgba(255,255,255,.72);
      border-radius:var(--radius-lg);
      padding:16px;
      box-shadow:0 12px 28px rgba(16,32,51,.16);
    }
    .image-caption strong{display:block;margin-bottom:4px}
    .image-caption span{color:var(--muted);font-size:14px}
    .steps{
      display:grid;
      gap:14px;
    }
    .step{
      display:grid;
      grid-template-columns:46px 1fr;
      gap:14px;
      padding:18px;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      background:#fff;
      box-shadow:0 8px 20px rgba(16,32,51,.05);
      transition:transform var(--ease),border-color var(--ease);
    }
    .step:hover{transform:translateY(-2px);border-color:#bdd0ea}
    .step-num{
      width:46px;height:46px;border-radius:16px;
      background:var(--primary);
      color:#fff;
      display:grid;place-items:center;
      font-weight:900;
      box-shadow:0 10px 20px rgba(20,99,255,.20);
    }
    .step h3{
      margin:0 0 6px;
      font-size:20px;
      letter-spacing:-.02em;
    }
    .step p{margin:0;color:var(--muted)}
    .latest-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:20px;
    }
    .latest-card{
      overflow:hidden;
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid var(--border);
      box-shadow:var(--shadow-soft);
      transition:transform var(--ease),box-shadow var(--ease);
    }
    .latest-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .latest-thumb{height:170px;overflow:hidden;background:var(--surface-2)}
    .latest-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
    .latest-card:hover .latest-thumb img{transform:scale(1.04)}
    .latest-body{padding:20px}
    .badge{
      display:inline-flex;
      align-items:center;
      padding:6px 10px;
      border-radius:999px;
      background:var(--accent-soft);
      color:#087a52;
      font-weight:900;
      font-size:13px;
      margin-bottom:12px;
    }
    .latest-body h3{
      margin:0 0 10px;
      font-size:20px;
      line-height:1.35;
      letter-spacing:-.02em;
    }
    .latest-body p{color:var(--muted);margin:0}
    .faq{
      display:grid;
      gap:14px;
    }
    .faq-item{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .faq-question{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:20px 22px;
      background:#fff;
      color:var(--text);
      text-align:left;
      font-weight:900;
      transition:background var(--ease);
    }
    .faq-question:hover,.faq-question:focus{
      background:var(--surface-2);
      outline:none;
    }
    .faq-question span:last-child{
      width:28px;height:28px;border-radius:999px;
      background:var(--primary-soft);
      color:var(--primary);
      display:grid;place-items:center;
      flex:0 0 auto;
      transition:transform var(--ease);
    }
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .faq-answer{
      display:none;
      padding:0 22px 20px;
      color:var(--muted);
    }
    .faq-item.open .faq-answer{display:block}
    .cta{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-xl);
      padding:42px;
      background:
        linear-gradient(135deg, rgba(20,99,255,.95), rgba(24,185,129,.82)),
        url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
      color:#fff;
      box-shadow:var(--shadow);
    }
    .cta::after{
      content:"";
      position:absolute;
      right:-100px;top:-120px;width:280px;height:280px;border-radius:50%;
      background:rgba(255,255,255,.18);
    }
    .cta-content{position:relative;z-index:2;display:flex;justify-content:space-between;gap:28px;align-items:center}
    .cta h2{
      font-size:clamp(28px,3.4vw,44px);
      line-height:1.16;
      letter-spacing:-.04em;
      margin:0 0 12px;
    }
    .cta p{
      margin:0;
      max-width:720px;
      color:rgba(255,255,255,.86);
      font-size:17px;
    }
    .cta .btn-secondary{
      background:#fff;
      color:var(--primary);
      border-color:rgba(255,255,255,.6);
      white-space:nowrap;
    }
    .site-footer{
      padding:54px 0 28px;
      background:#0b1728;
      color:#d8e5f6;
      margin-top:38px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr .6fr .7fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.12);
    }
    .footer-brand{
      display:flex;align-items:center;gap:12px;
      margin-bottom:14px;
    }
    .footer-brand .brand-mark{
      box-shadow:none;
    }
    .footer-brand strong{
      font-size:18px;
      color:#fff;
    }
    .footer-text{
      color:#aabbd0;
      max-width:560px;
      margin:0;
    }
    .footer-col h3{
      color:#fff;
      font-size:16px;
      margin:0 0 14px;
      font-weight:900;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:#aabbd0;
      transition:color var(--ease),transform var(--ease);
    }
    .footer-links a:hover{
      color:#fff;
      transform:translateX(2px);
    }
    .copyright{
      display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
      padding-top:22px;
      color:#8ea3bd;
      font-size:14px;
    }
    @media (max-width:1024px){
      .article-layout{grid-template-columns:1fr}
      .sidebar{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
      .notice-card{grid-column:1 / -1}
      .grid-3,.latest-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .split{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      :root{--header-h:64px}
      .container{width:min(var(--container), calc(100% - 28px))}
      .nav{gap:12px}
      .brand-name{max-width:180px}
      .nav-links{
        position:absolute;
        left:14px;right:14px;top:calc(var(--header-h) + 10px);
        display:none;
        padding:10px;
        border-radius:var(--radius-lg);
        background:rgba(255,255,255,.96);
        border:1px solid var(--border);
        box-shadow:var(--shadow);
      }
      .nav-links.open{display:grid}
      .nav-link{width:100%;text-align:center}
      .menu-toggle{display:grid;place-items:center}
      .nav-actions .btn{display:none}
      .article-hero{padding:52px 0 38px}
      .hero-summary{font-size:16px}
      .section{padding:56px 0}
      .section-head{display:block}
      .article-body{padding:24px}
      .cms-content h2{font-size:25px}
      .cms-content h3{font-size:21px}
      .sidebar{grid-template-columns:1fr}
      .grid-3,.latest-grid{grid-template-columns:1fr}
      .cta{padding:30px 24px}
      .cta-content{display:block}
      .cta .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:grid}
    }
    @media (max-width:520px){
      .brand-name{max-width:145px;font-size:16px}
      .brand-mark{width:38px;height:38px;border-radius:13px}
      .article-hero h1{font-size:32px}
      .crumbs{font-size:13px}
      .article-meta{gap:8px}
      .meta-pill{font-size:13px}
      .article-cover,.article-cover img{min-height:210px}
      .article-body{font-size:16px;padding:20px}
      .side-card,.info-card{padding:18px}
      .step{grid-template-columns:1fr}
      .step-num{width:42px;height:42px}
      .latest-thumb{height:150px}
      .faq-question{padding:17px 18px}
      .faq-answer{padding:0 18px 18px}
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}