/* roulang page: index */
:root{
      --bg:#0e1118;
      --bg-soft:#151a25;
      --panel:#ffffff;
      --panel-soft:#f6f7fb;
      --text:#151823;
      --muted:#6d7484;
      --light:#f9fafc;
      --white:#ffffff;
      --primary:#d64761;
      --primary-dark:#b7354c;
      --secondary:#7c5cff;
      --accent:#19c6a7;
      --warning:#ffb020;
      --border:rgba(20,24,35,.12);
      --border-light:rgba(255,255,255,.16);
      --shadow:0 24px 70px rgba(15,23,42,.16);
      --shadow-soft:0 12px 36px rgba(15,23,42,.10);
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:10px;
      --container:1180px;
      --ease:all .22s 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;
      color:var(--text);
      background:linear-gradient(180deg,#fff 0%,#f5f6fa 38%,#fff 100%);
      line-height:1.72;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input{font:inherit}
    ::selection{background:rgba(214,71,97,.18)}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .skip-link{
      position:absolute;left:-999px;top:12px;background:var(--primary);color:#fff;
      padding:10px 14px;border-radius:10px;z-index:999;
    }
    .skip-link:focus{left:16px;outline:3px solid rgba(214,71,97,.25)}

    .site-header{
      position:sticky;top:0;z-index:50;
      background:rgba(255,255,255,.84);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(20,24,35,.08);
    }
    .nav-wrap{
      min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;
    }
    .brand{
      display:flex;align-items:center;gap:12px;font-weight:900;letter-spacing:-.02em;
      color:#111827;min-width:0;
    }
    .brand-mark{
      width:42px;height:42px;border-radius:14px;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      color:#fff;display:grid;place-items:center;
      box-shadow:0 12px 26px rgba(214,71,97,.26);
      flex:0 0 auto;font-size:15px;
    }
    .brand-name{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 14px;border-radius:999px;color:#4b5563;font-weight:700;font-size:15px;
      transition:var(--ease);
    }
    .nav-links a:hover,.nav-links a:focus{
      color:var(--primary);background:rgba(214,71,97,.08);outline:none;
    }
    .nav-links a.active{color:#fff;background:#111827;box-shadow:0 10px 24px rgba(17,24,39,.16)}
    .nav-action{
      display:flex;align-items:center;gap:10px;
    }
    .menu-toggle{
      display:none;border:0;background:#111827;color:#fff;border-radius:12px;
      padding:10px 12px;cursor:pointer;transition:var(--ease);
    }
    .menu-toggle:hover{transform:translateY(-1px);background:#000}

    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;border-radius:999px;
      padding:12px 18px;font-weight:800;cursor:pointer;transition:var(--ease);
      white-space:nowrap;
    }
    .btn-primary{
      color:#fff;background:linear-gradient(135deg,var(--primary),#e86b80);
      box-shadow:0 14px 34px rgba(214,71,97,.28);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 44px rgba(214,71,97,.34)}
    .btn-dark{color:#fff;background:#111827}
    .btn-dark:hover{background:#000;transform:translateY(-2px)}
    .btn-ghost{
      color:#111827;background:rgba(255,255,255,.78);border-color:rgba(255,255,255,.38);
    }
    .btn-ghost:hover{background:#fff;transform:translateY(-2px)}
    .btn-outline{
      color:var(--primary);background:#fff;border-color:rgba(214,71,97,.28);
    }
    .btn-outline:hover{background:rgba(214,71,97,.07);transform:translateY(-2px)}
    .btn:focus-visible,.search-input:focus-visible,.check-card:focus-within{
      outline:4px solid rgba(214,71,97,.22);outline-offset:2px;
    }

    .hero{
      position:relative;isolation:isolate;min-height:680px;color:#fff;
      background:
        linear-gradient(105deg,rgba(10,14,24,.92) 0%,rgba(16,20,33,.76) 46%,rgba(16,20,33,.34) 100%),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      overflow:hidden;
    }
    .hero:before{
      content:"";position:absolute;inset:auto -12% -26% -12%;height:320px;
      background:radial-gradient(circle at 50% 50%,rgba(214,71,97,.38),transparent 62%);
      filter:blur(20px);z-index:-1;
    }
    .hero-inner{
      padding:104px 0 72px;
      display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:end;
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      border:1px solid var(--border-light);background:rgba(255,255,255,.10);
      color:#fff;border-radius:999px;padding:8px 12px;font-weight:800;font-size:14px;
      backdrop-filter:blur(12px);
    }
    .eyebrow-dot{width:8px;height:8px;border-radius:999px;background:var(--accent);box-shadow:0 0 0 6px rgba(25,198,167,.16)}
    h1{
      margin-top:22px;font-size:clamp(42px,6vw,76px);line-height:1.05;letter-spacing:-.055em;
      max-width:820px;
    }
    .hero-subtitle{
      margin-top:22px;max-width:720px;color:rgba(255,255,255,.82);
      font-size:18px;line-height:1.9;
    }
    .hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}
    .hero-note{
      margin-top:22px;color:rgba(255,255,255,.68);font-size:14px;
      display:flex;gap:10px;align-items:flex-start;
    }
    .hero-panel{
      background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);
      border-radius:var(--radius-xl);padding:22px;backdrop-filter:blur(22px);
      box-shadow:0 26px 80px rgba(0,0,0,.22);
    }
    .age-box{
      background:rgba(255,255,255,.94);color:var(--text);
      border-radius:24px;padding:26px;
    }
    .age-box h2{font-size:24px;line-height:1.25;letter-spacing:-.02em}
    .age-box p{margin-top:10px;color:var(--muted)}
    .check-list{display:grid;gap:12px;margin-top:22px}
    .check-card{
      display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:16px;
      background:#f8fafc;border:1px solid rgba(15,23,42,.08);
      transition:var(--ease);
    }
    .check-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-soft)}
    .check-icon{
      width:28px;height:28px;border-radius:50%;
      background:rgba(25,198,167,.14);color:#069c82;display:grid;place-items:center;
      font-weight:900;flex:0 0 auto;
    }
    .check-card strong{display:block;font-size:15px}
    .check-card span{display:block;color:var(--muted);font-size:13px;margin-top:2px}

    .section{padding:88px 0}
    .section-tight{padding:68px 0}
    .section-head{
      display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:34px;
    }
    .section-kicker{
      color:var(--primary);font-weight:900;letter-spacing:.08em;font-size:13px;margin-bottom:8px;
    }
    .section-title{
      font-size:clamp(30px,4vw,46px);line-height:1.18;letter-spacing:-.04em;
      max-width:760px;
    }
    .section-desc{color:var(--muted);max-width:620px;font-size:16px}
    .badge-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
    .badge{
      display:inline-flex;align-items:center;gap:7px;border-radius:999px;
      padding:8px 12px;background:#fff;border:1px solid var(--border);
      color:#4b5563;font-size:13px;font-weight:800;
    }
    .badge.hot{color:#fff;background:#111827;border-color:#111827}

    .feature-grid{
      display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
    }
    .feature-card{
      background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-lg);
      padding:26px;box-shadow:var(--shadow-soft);transition:var(--ease);
      position:relative;overflow:hidden;
    }
    .feature-card:after{
      content:"";position:absolute;right:-54px;top:-54px;width:132px;height:132px;border-radius:50%;
      background:rgba(214,71,97,.08);
    }
    .feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .feature-icon{
      width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,rgba(214,71,97,.14),rgba(124,92,255,.14));
      display:grid;place-items:center;font-size:22px;margin-bottom:18px;
    }
    .feature-card h3{font-size:21px;margin-bottom:8px;letter-spacing:-.02em}
    .feature-card p{color:var(--muted)}

    .visual-split{
      display:grid;grid-template-columns:.94fr 1.06fr;gap:36px;align-items:center;
    }
    .image-stack{position:relative;min-height:520px}
    .image-stack img{
      border-radius:var(--radius-xl);box-shadow:var(--shadow);object-fit:cover;
    }
    .image-main{width:78%;height:420px}
    .image-float{
      position:absolute;right:0;bottom:0;width:54%;height:250px;border:8px solid #fff;
    }
    .floating-label{
      position:absolute;left:28px;bottom:34px;background:#fff;border:1px solid var(--border);
      box-shadow:var(--shadow-soft);border-radius:18px;padding:14px 16px;font-weight:900;
    }
    .content-panel{
      background:#111827;color:#fff;border-radius:var(--radius-xl);padding:42px;
      box-shadow:var(--shadow);position:relative;overflow:hidden;
    }
    .content-panel:before{
      content:"";position:absolute;right:-80px;top:-80px;width:240px;height:240px;border-radius:50%;
      background:rgba(214,71,97,.28);
    }
    .content-panel h2{font-size:clamp(28px,4vw,44px);line-height:1.2;letter-spacing:-.04em;position:relative}
    .content-panel p{margin-top:16px;color:rgba(255,255,255,.74);position:relative}
    .rule-list{display:grid;gap:14px;margin-top:26px;position:relative}
    .rule-item{
      display:flex;gap:12px;align-items:flex-start;padding:14px;border-radius:16px;
      background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);
    }
    .rule-num{
      width:28px;height:28px;border-radius:10px;background:rgba(214,71,97,.9);
      display:grid;place-items:center;font-weight:900;flex:0 0 auto;
    }

    .steps{
      display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
      counter-reset:step;
    }
    .step-card{
      counter-increment:step;background:#fff;border:1px solid var(--border);
      border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-soft);
      transition:var(--ease);
    }
    .step-card:hover{transform:translateY(-4px)}
    .step-card:before{
      content:"0" counter(step);display:inline-flex;margin-bottom:18px;
      width:46px;height:46px;align-items:center;justify-content:center;
      border-radius:15px;background:#111827;color:#fff;font-weight:900;
    }
    .step-card h3{font-size:19px;margin-bottom:8px}
    .step-card p{color:var(--muted);font-size:15px}

    .content-list-wrap{
      background:linear-gradient(180deg,#111827,#171b2a);color:#fff;border-radius:34px;
      padding:40px;box-shadow:var(--shadow);overflow:hidden;position:relative;
    }
    .content-list-wrap:before{
      content:"";position:absolute;inset:-120px auto auto -120px;width:340px;height:340px;
      background:radial-gradient(circle,rgba(124,92,255,.36),transparent 68%);
    }
    .search-strip{
      display:flex;gap:12px;align-items:center;justify-content:space-between;
      margin:24px 0 26px;position:relative;
    }
    .search-input{
      width:100%;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.08);
      color:#fff;border-radius:999px;padding:13px 16px;
    }
    .search-input::placeholder{color:rgba(255,255,255,.52)}
    .post-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;position:relative}
    .post-card{
      display:block;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);
      border-radius:20px;padding:18px;transition:var(--ease);
    }
    .post-card:hover{background:rgba(255,255,255,.13);transform:translateY(-3px)}
    .post-meta{display:flex;gap:10px;flex-wrap:wrap;color:rgba(255,255,255,.62);font-size:13px;margin-bottom:10px}
    .post-title{font-size:18px;font-weight:900;line-height:1.45}
    .post-summary{margin-top:8px;color:rgba(255,255,255,.70);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .empty-state{
      background:rgba(255,255,255,.08);border:1px dashed rgba(255,255,255,.22);
      border-radius:20px;padding:24px;color:rgba(255,255,255,.72);position:relative;
    }

    .cover-grid{
      display:grid;grid-template-columns:1.1fr .9fr;gap:22px;
    }
    .cover-card{
      position:relative;border-radius:var(--radius-xl);overflow:hidden;min-height:340px;
      box-shadow:var(--shadow);background:#111827;color:#fff;
    }
    .cover-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
    .cover-card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 20%,rgba(0,0,0,.78) 100%)}
    .cover-copy{position:absolute;left:24px;right:24px;bottom:24px;z-index:2}
    .cover-copy h3{font-size:26px;line-height:1.25;margin-bottom:8px}
    .cover-copy p{color:rgba(255,255,255,.76)}
    .mini-cards{display:grid;gap:22px}
    .mini-card{
      background:#fff;border:1px solid var(--border);border-radius:var(--radius-xl);padding:26px;
      box-shadow:var(--shadow-soft);
    }
    .mini-card strong{font-size:32px;letter-spacing:-.04em;color:var(--primary)}
    .mini-card h3{margin-top:8px;font-size:21px}
    .mini-card p{color:var(--muted);margin-top:8px}

    .faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:34px;align-items:start}
    .faq-aside{
      position:sticky;top:108px;background:var(--panel-soft);border:1px solid var(--border);
      border-radius:var(--radius-xl);padding:28px;
    }
    .faq-aside h2{font-size:32px;line-height:1.2;letter-spacing:-.035em}
    .faq-aside p{color:var(--muted);margin-top:12px}
    .faq-list{display:grid;gap:14px}
    details{
      background:#fff;border:1px solid var(--border);border-radius:18px;
      box-shadow:0 10px 28px rgba(15,23,42,.06);overflow:hidden;
    }
    summary{
      list-style:none;cursor:pointer;padding:20px 22px;font-weight:900;
      display:flex;align-items:center;justify-content:space-between;gap:16px;
    }
    summary::-webkit-details-marker{display:none}
    summary:after{
      content:"+";width:28px;height:28px;border-radius:50%;display:grid;place-items:center;
      background:rgba(214,71,97,.10);color:var(--primary);font-weight:900;flex:0 0 auto;
    }
    details[open] summary:after{content:"−";background:var(--primary);color:#fff}
    details p{padding:0 22px 20px;color:var(--muted)}

    .cta{
      padding:74px 0;
    }
    .cta-box{
      background:
        linear-gradient(100deg,rgba(17,24,39,.94),rgba(17,24,39,.72)),
        url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
      color:#fff;border-radius:36px;padding:52px;
      display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;
      box-shadow:var(--shadow);overflow:hidden;
    }
    .cta-box h2{font-size:clamp(30px,4vw,48px);line-height:1.15;letter-spacing:-.045em}
    .cta-box p{margin-top:14px;color:rgba(255,255,255,.74);max-width:720px}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}

    .site-footer{
      background:#0b0e14;color:rgba(255,255,255,.72);padding:58px 0 30px;
    }
    .footer-grid{
      display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:30px;padding-bottom:32px;
      border-bottom:1px solid rgba(255,255,255,.10);
    }
    .footer-brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:900;font-size:18px}
    .footer-brand .brand-mark{box-shadow:none}
    .footer-text{margin-top:14px;max-width:560px;color:rgba(255,255,255,.60)}
    .footer-col h3{color:#fff;font-size:16px;margin-bottom:12px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{transition:var(--ease)}
    .footer-links a:hover{color:#fff;transform:translateX(2px)}
    .copyright{
      display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
      padding-top:24px;font-size:13px;color:rgba(255,255,255,.48);
    }

    @media (max-width:1024px){
      .hero-inner,.visual-split,.faq-grid{grid-template-columns:1fr}
      .hero{min-height:auto}
      .hero-panel{max-width:680px}
      .feature-grid{grid-template-columns:repeat(2,1fr)}
      .steps{grid-template-columns:repeat(2,1fr)}
      .cover-grid{grid-template-columns:1fr}
      .cta-box{grid-template-columns:1fr}
      .cta-actions{justify-content:flex-start}
      .faq-aside{position:relative;top:auto}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .nav-wrap{min-height:66px}
      .brand-name{max-width:190px}
      .menu-toggle{display:inline-flex}
      .nav-links{
        position:absolute;left:14px;right:14px;top:72px;
        background:#fff;border:1px solid var(--border);border-radius:18px;
        padding:12px;box-shadow:var(--shadow);display:none;flex-direction:column;align-items:stretch;
      }
      .nav-links.open{display:flex}
      .nav-links a{text-align:center}
      .nav-action .btn{display:none}
      .hero-inner{padding:70px 0 50px;gap:32px}
      .hero-actions .btn{width:100%}
      .section{padding:64px 0}
      .section-tight{padding:52px 0}
      .section-head{display:block}
      .section-desc{margin-top:12px}
      .feature-grid,.post-grid,.steps{grid-template-columns:1fr}
      .content-list-wrap{padding:24px;border-radius:26px}
      .search-strip{display:block}
      .search-input{margin-bottom:12px}
      .image-stack{min-height:auto}
      .image-main{width:100%;height:330px}
      .image-float{position:relative;width:78%;height:210px;margin:-80px 0 0 auto}
      .floating-label{left:16px;bottom:18px}
      .content-panel,.cta-box{padding:30px;border-radius:26px}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      h1{font-size:38px}
      .brand-name{max-width:158px;font-size:16px}
      .hero-subtitle{font-size:16px}
      .age-box{padding:20px}
      .feature-card,.mini-card,.step-card{padding:20px}
      .cover-card{min-height:300px}
      .cover-copy{left:18px;right:18px;bottom:18px}
      .cover-copy h3{font-size:22px}
      .copyright{display:block}
      .copyright span{display:block;margin-top:8px}
    }

/* roulang page: article */
:root{
      --bg:#0e1118;
      --bg-soft:#151a25;
      --panel:#ffffff;
      --panel-soft:#f6f7fb;
      --text:#151823;
      --muted:#6d7484;
      --light:#f9fafc;
      --white:#ffffff;
      --primary:#d64761;
      --primary-dark:#b7354c;
      --secondary:#7c5cff;
      --accent:#19c6a7;
      --warning:#ffb020;
      --border:rgba(20,24,35,.12);
      --border-light:rgba(255,255,255,.16);
      --shadow:0 24px 70px rgba(15,23,42,.16);
      --shadow-soft:0 12px 36px rgba(15,23,42,.10);
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:10px;
      --container:1180px;
      --ease:all .22s 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;
      color:var(--text);
      background:linear-gradient(180deg,#fff 0%,#f5f6fa 38%,#fff 100%);
      line-height:1.72;
      overflow-x:hidden;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(214,71,97,.18);color:#111827}
    .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,.84);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(20,24,35,.08);
    }
    .nav-wrap{
      min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;
    }
    .brand{
      display:flex;align-items:center;gap:12px;font-weight:900;letter-spacing:-.02em;
      color:#111827;min-width:0;
    }
    .brand:hover{color:#111827}
    .brand-mark{
      width:42px;height:42px;border-radius:14px;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      color:#fff;display:grid;place-items:center;
      box-shadow:0 12px 26px rgba(214,71,97,.26);
      flex:0 0 auto;font-size:15px;font-weight:900;
    }
    .brand-name{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 14px;border-radius:999px;color:#4b5563;font-weight:700;font-size:15px;
      transition:var(--ease);
    }
    .nav-links a:hover,.nav-links a:focus{
      color:var(--primary);background:rgba(214,71,97,.08);outline:none;
    }
    .nav-links a.active{color:#fff;background:#111827;box-shadow:0 10px 24px rgba(17,24,39,.16)}
    .nav-action{display:flex;align-items:center;gap:10px}
    .menu-toggle{
      display:none;border:0;background:#111827;color:#fff;border-radius:12px;
      padding:10px 12px;cursor:pointer;transition:var(--ease);
    }
    .menu-toggle:hover{transform:translateY(-1px);background:#000}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;border-radius:999px;
      padding:12px 18px;font-weight:800;cursor:pointer;transition:var(--ease);
      white-space:nowrap;text-decoration:none;
    }
    .btn-primary{
      color:#fff;background:linear-gradient(135deg,var(--primary),#e86b80);
      box-shadow:0 14px 34px rgba(214,71,97,.28);
    }
    .btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 44px rgba(214,71,97,.34)}
    .btn-dark{color:#fff;background:#111827}
    .btn-dark:hover{color:#fff;background:#000;transform:translateY(-2px)}
    .btn-ghost{color:#111827;background:rgba(255,255,255,.78);border-color:rgba(255,255,255,.38)}
    .btn-ghost:hover{background:#fff;transform:translateY(-2px)}
    .btn-outline{color:var(--primary);background:#fff;border-color:rgba(214,71,97,.28)}
    .btn-outline:hover{color:var(--primary);background:rgba(214,71,97,.07);transform:translateY(-2px)}
    .btn:focus-visible,.menu-toggle:focus-visible,.nav-links a:focus-visible{
      outline:4px solid rgba(214,71,97,.22);outline-offset:2px;
    }
    .article-banner{
      position:relative;isolation:isolate;color:#fff;overflow:hidden;
      background:
        linear-gradient(112deg,rgba(10,14,24,.94) 0%,rgba(16,20,33,.82) 48%,rgba(16,20,33,.38) 100%),
        url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
    }
    .article-banner:before{
      content:"";position:absolute;inset:-20% -10% auto auto;width:420px;height:420px;border-radius:999px;
      background:radial-gradient(circle,rgba(124,92,255,.42),transparent 68%);
      filter:blur(18px);z-index:-1;
    }
    .article-banner:after{
      content:"";position:absolute;left:-12%;bottom:-32%;width:520px;height:360px;border-radius:999px;
      background:radial-gradient(circle,rgba(214,71,97,.38),transparent 65%);
      filter:blur(20px);z-index:-1;
    }
    .banner-inner{
      padding:86px 0 70px;
      display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:42px;align-items:end;
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      border:1px solid var(--border-light);background:rgba(255,255,255,.10);
      color:#fff;border-radius:999px;padding:8px 12px;font-weight:800;font-size:14px;
      backdrop-filter:blur(12px);
    }
    .eyebrow-dot{width:8px;height:8px;border-radius:999px;background:var(--accent);box-shadow:0 0 0 6px rgba(25,198,167,.16)}
    .article-banner h1{
      margin:20px 0 0;
      font-size:clamp(34px,5vw,58px);
      line-height:1.12;
      letter-spacing:-.045em;
      max-width:860px;
      font-weight:950;
      word-break:break-word;
    }
    .banner-summary{
      margin:22px 0 0;
      color:rgba(255,255,255,.82);
      font-size:17px;
      line-height:1.9;
      max-width:820px;
    }
    .meta-row{
      display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;
    }
    .meta-pill{
      display:inline-flex;align-items:center;gap:8px;
      padding:9px 12px;border-radius:999px;
      background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.16);
      color:rgba(255,255,255,.86);font-size:14px;font-weight:700;
      backdrop-filter:blur(12px);
    }
    .banner-card{
      border:1px solid rgba(255,255,255,.16);
      background:rgba(255,255,255,.12);
      border-radius:var(--radius-xl);
      padding:18px;
      backdrop-filter:blur(22px);
      box-shadow:0 26px 80px rgba(0,0,0,.22);
    }
    .banner-card img{
      border-radius:22px;
      aspect-ratio:4/3;
      object-fit:cover;
      width:100%;
    }
    .banner-card p{
      margin:16px 4px 2px;color:rgba(255,255,255,.78);font-size:14px;
    }
    .section{padding:82px 0}
    .section-tight{padding:62px 0}
    .section-head{
      display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:34px;
    }
    .section-kicker{
      color:var(--primary);font-weight:900;letter-spacing:.08em;font-size:13px;margin-bottom:8px;
    }
    .section-title{
      font-size:clamp(28px,4vw,44px);line-height:1.18;letter-spacing:-.04em;
      max-width:760px;margin:0;
    }
    .section-desc{color:var(--muted);max-width:620px;font-size:16px;margin:0}
    .badge-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
    .badge{
      display:inline-flex;align-items:center;gap:7px;
      padding:8px 11px;border-radius:999px;
      background:rgba(214,71,97,.08);
      border:1px solid rgba(214,71,97,.14);
      color:var(--primary-dark);
      font-weight:800;
      font-size:13px;
    }
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      gap:34px;
      align-items:start;
    }
    .article-shell{
      background:var(--panel);
      border:1px solid var(--border);
      border-radius:var(--radius-xl);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .article-cover{
      position:relative;
      background:#111827;
    }
    .article-cover img{
      width:100%;
      aspect-ratio:16/7;
      object-fit:cover;
      opacity:.94;
    }
    .article-cover .cover-label{
      position:absolute;left:22px;bottom:20px;
      display:inline-flex;align-items:center;gap:8px;
      color:#fff;background:rgba(17,24,39,.72);
      border:1px solid rgba(255,255,255,.18);
      backdrop-filter:blur(12px);
      border-radius:999px;
      padding:9px 13px;
      font-weight:800;
      font-size:14px;
    }
    .article-body{
      padding:42px;
    }
    .article-content{
      color:#2b3140;
      font-size:17px;
      line-height:2;
      word-break:break-word;
    }
    .article-content h2,
    .article-content h3,
    .article-content h4{
      color:#111827;
      line-height:1.32;
      letter-spacing:-.025em;
      margin:2em 0 .75em;
      font-weight:900;
    }
    .article-content h2{font-size:30px}
    .article-content h3{font-size:24px}
    .article-content h4{font-size:20px}
    .article-content p{margin:0 0 1.2em}
    .article-content ul,
    .article-content ol{
      margin:0 0 1.35em;
      padding-left:1.35em;
    }
    .article-content li{margin:.48em 0}
    .article-content a{
      color:var(--primary);
      font-weight:800;
      border-bottom:1px solid rgba(214,71,97,.28);
      transition:var(--ease);
    }
    .article-content a:hover{
      color:var(--primary-dark);
      background:rgba(214,71,97,.07);
    }
    .article-content blockquote{
      margin:1.6em 0;
      padding:18px 20px;
      border-left:4px solid var(--primary);
      background:linear-gradient(135deg,rgba(214,71,97,.08),rgba(124,92,255,.06));
      border-radius:0 18px 18px 0;
      color:#3f4656;
      font-weight:700;
    }
    .article-content img{
      border-radius:22px;
      box-shadow:var(--shadow-soft);
      margin:24px 0;
    }
    .article-content table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      overflow:hidden;
      border:1px solid var(--border);
      border-radius:18px;
      margin:24px 0;
      background:#fff;
    }
    .article-content th,
    .article-content td{
      padding:13px 14px;
      border-bottom:1px solid rgba(20,24,35,.08);
      vertical-align:top;
    }
    .article-content th{
      background:#f8fafc;
      color:#111827;
      font-weight:900;
    }
    .article-content tr:last-child td{border-bottom:0}
    .not-found{
      padding:54px 34px;
      text-align:center;
      background:linear-gradient(135deg,#fff,#f8fafc);
      border:1px dashed rgba(214,71,97,.30);
      border-radius:var(--radius-lg);
    }
    .not-found h2{
      margin:0 0 10px;
      font-size:30px;
      font-weight:950;
      letter-spacing:-.03em;
    }
    .not-found p{margin:0 0 22px;color:var(--muted)}
    .side-stack{display:grid;gap:18px;position:sticky;top:98px}
    .side-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:22px;
      box-shadow:var(--shadow-soft);
    }
    .side-card.dark{
      color:#fff;
      background:
        linear-gradient(145deg,rgba(17,24,39,.92),rgba(21,26,37,.92)),
        url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
      border-color:rgba(255,255,255,.14);
    }
    .side-card h2,.side-card h3{
      margin:0 0 12px;
      font-size:20px;
      line-height:1.35;
      letter-spacing:-.02em;
      font-weight:950;
    }
    .side-card p{margin:0;color:var(--muted);font-size:14px}
    .side-card.dark p{color:rgba(255,255,255,.76)}
    .notice-list{display:grid;gap:12px;margin-top:18px}
    .notice-item{
      display:flex;gap:10px;align-items:flex-start;
      padding:13px;border-radius:16px;
      background:#f8fafc;border:1px solid rgba(15,23,42,.08);
      transition:var(--ease);
    }
    .notice-item:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(15,23,42,.08)}
    .notice-icon{
      width:28px;height:28px;border-radius:10px;
      display:grid;place-items:center;flex:0 0 auto;
      background:rgba(25,198,167,.12);color:#0f9f88;font-weight:950;
    }
    .notice-item strong{display:block;font-size:14px;color:#111827}
    .notice-item span{display:block;font-size:13px;color:var(--muted);margin-top:2px;line-height:1.55}
    .toc-list{display:grid;gap:8px;margin-top:14px}
    .toc-list a{
      display:flex;align-items:center;justify-content:space-between;gap:10px;
      padding:11px 12px;border-radius:14px;
      color:#4b5563;background:#f8fafc;border:1px solid transparent;
      font-weight:800;font-size:14px;transition:var(--ease);
    }
    .toc-list a:hover{
      color:var(--primary);
      border-color:rgba(214,71,97,.16);
      background:rgba(214,71,97,.06);
      transform:translateX(2px);
    }
    .info-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .info-card{
      background:#fff;border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:24px;
      box-shadow:var(--shadow-soft);
      transition:var(--ease);
    }
    .info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .info-card .num{
      width:44px;height:44px;border-radius:15px;
      display:grid;place-items:center;
      color:#fff;background:linear-gradient(135deg,var(--primary),var(--secondary));
      font-weight:950;margin-bottom:16px;
    }
    .info-card h3{margin:0 0 8px;font-size:19px;font-weight:950}
    .info-card p{margin:0;color:var(--muted);font-size:14px}
    .faq-wrap{
      display:grid;
      grid-template-columns:.88fr 1.12fr;
      gap:34px;
      align-items:start;
    }
    .faq-list{display:grid;gap:14px}
    .faq-item{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:20px 22px;
      box-shadow:0 10px 28px rgba(15,23,42,.07);
      transition:var(--ease);
    }
    .faq-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-soft)}
    .faq-item h3{
      margin:0 0 8px;
      font-size:18px;
      font-weight:950;
      letter-spacing:-.02em;
    }
    .faq-item p{margin:0;color:var(--muted);font-size:14px}
    .cta{
      position:relative;overflow:hidden;isolation:isolate;
      color:#fff;border-radius:var(--radius-xl);
      padding:46px;
      background:
        linear-gradient(125deg,rgba(17,24,39,.96),rgba(45,32,70,.90)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
    }
    .cta:after{
      content:"";position:absolute;right:-120px;top:-120px;width:310px;height:310px;border-radius:999px;
      background:radial-gradient(circle,rgba(214,71,97,.50),transparent 66%);
      z-index:-1;filter:blur(8px);
    }
    .cta-inner{
      display:flex;justify-content:space-between;align-items:center;gap:28px;
    }
    .cta h2{
      margin:0;
      font-size:clamp(28px,4vw,42px);
      line-height:1.18;
      letter-spacing:-.04em;
      font-weight:950;
      max-width:720px;
    }
    .cta p{margin:14px 0 0;color:rgba(255,255,255,.78);max-width:760px}
    .site-footer{
      background:#0d111a;color:#fff;padding:62px 0 26px;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .footer-grid{
      display:grid;grid-template-columns:1.3fr .7fr .7fr;gap:34px;
      padding-bottom:34px;
    }
    .footer-brand{
      display:flex;align-items:center;gap:12px;font-weight:950;font-size:18px;margin-bottom:14px;
    }
    .footer-text{color:rgba(255,255,255,.66);max-width:520px;margin:0}
    .footer-col h3{
      font-size:15px;color:#fff;margin:0 0 14px;font-weight:950;
    }
    .footer-links{display:grid;gap:9px}
    .footer-links a{
      color:rgba(255,255,255,.62);font-size:14px;transition:var(--ease);
    }
    .footer-links a:hover{color:#fff;transform:translateX(2px)}
    .copyright{
      border-top:1px solid rgba(255,255,255,.10);
      padding-top:20px;
      display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
      color:rgba(255,255,255,.52);font-size:13px;
    }
    @media (max-width:1024px){
      .banner-inner{grid-template-columns:1fr;gap:28px;padding:72px 0 58px}
      .banner-card{max-width:520px}
      .article-layout{grid-template-columns:1fr}
      .side-stack{position:static;grid-template-columns:repeat(2,1fr)}
      .side-card.dark{grid-column:1/-1}
      .info-grid{grid-template-columns:repeat(2,1fr)}
      .faq-wrap{grid-template-columns:1fr}
      .cta-inner{align-items:flex-start;flex-direction:column}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .container{width:min(var(--container),calc(100% - 28px))}
      .nav-wrap{min-height:68px}
      .brand-name{max-width:48vw}
      .menu-toggle{display:inline-flex;align-items:center;gap:6px}
      .nav-links{
        position:absolute;left:14px;right:14px;top:76px;
        display:none;flex-direction:column;align-items:stretch;
        padding:12px;background:rgba(255,255,255,.96);
        border:1px solid rgba(20,24,35,.10);
        border-radius:18px;box-shadow:var(--shadow-soft);
      }
      .nav-links.show{display:flex}
      .nav-links a{width:100%;text-align:center}
      .nav-action .btn{display:none}
      .article-banner h1{font-size:clamp(30px,9vw,46px)}
      .banner-summary{font-size:16px}
      .article-body{padding:28px}
      .article-cover img{aspect-ratio:16/9}
      .side-stack{grid-template-columns:1fr}
      .info-grid{grid-template-columns:1fr}
      .section{padding:62px 0}
      .section-tight{padding:48px 0}
      .section-head{display:block}
      .section-desc{margin-top:12px}
      .cta{padding:32px 24px}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      .container{width:min(var(--container),calc(100% - 22px))}
      .brand-mark{width:38px;height:38px;border-radius:13px}
      .brand-name{font-size:16px;max-width:58vw}
      .banner-inner{padding:58px 0 44px}
      .meta-pill{width:100%;justify-content:center}
      .article-body{padding:22px}
      .article-content{font-size:16px;line-height:1.9}
      .article-content h2{font-size:25px}
      .article-content h3{font-size:21px}
      .article-cover .cover-label{left:14px;bottom:14px}
      .btn{width:100%;padding:12px 16px}
      .cta h2{font-size:28px}
      .copyright{display:grid}
    }

/* 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}