/* roulang page: index */
:root{
      --bg-dark:#151316;
      --bg-dark-2:#1e1718;
      --bg-soft:#f5efe8;
      --bg-warm:#fbf7f2;
      --bg-rose:#e8d8d2;
      --text:#241c1d;
      --text-muted:#7a6a67;
      --text-light:#fff7f0;
      --rose:#b76e79;
      --rose-dark:#96545f;
      --copper:#c89a5b;
      --copper-dark:#a87a3c;
      --border:rgba(36,28,29,.12);
      --border-light:rgba(255,247,240,.14);
      --shadow:0 18px 45px rgba(42,25,20,.08);
      --shadow-strong:0 26px 70px rgba(20,13,12,.22);
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --container:1210px;
      --header-h:76px;
      --ease:cubic-bezier(.2,.8,.2,1);
    }

    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,Arial,sans-serif;
      background:var(--bg-soft);
      color:var(--text);
      line-height:1.75;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
      overflow-x:hidden;
    }
    body.menu-open{overflow:hidden}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{border:0;background:none;cursor:pointer}
    ::selection{background:rgba(183,110,121,.28)}
    :focus-visible{outline:3px solid rgba(200,154,91,.58);outline-offset:3px;border-radius:12px}
    .container{width:min(100% - 64px,var(--container));margin-inline:auto}
    .section{padding:88px 0}
    .section-soft{background:var(--bg-warm)}
    .eyebrow{
      display:inline-flex;align-items:center;gap:9px;
     padding:7px 12px;border-radius:999px;
      background:rgba(200,154,91,.12);color:var(--copper-dark);
      font-size:14px;font-weight:700;letter-spacing:.02em;
      border:1px solid rgba(200,154,91,.28);
    }
    .badge{
      display:inline-flex;align-items:center;justify-content:center;gap:6px;
      min-height:28px;padding:4px 10px;border-radius:999px;
      font-size:13px;font-weight:800;white-space:nowrap;
    }
    .badge-age{background:linear-gradient(135deg,var(--rose),var(--copper));color:#fff}
    .badge-soft{background:rgba(255,247,240,.12);color:var(--text-light);border:1px solid var(--border-light)}
    .badge-warm{background:rgba(200,154,91,.14);color:#6e4821;border:1px solid rgba(200,154,91,.24)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:10px;
      min-height:48px;padding:13px 22px;border-radius:999px;
      font-weight:800;letter-spacing:.01em;transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
      position:relative;isolation:isolate;
    }
    .btn-primary{
      color:#fff;background:linear-gradient(135deg,var(--rose),var(--copper));
      box-shadow:0 14px 34px rgba(183,110,121,.24);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 42px rgba(183,110,121,.32)}
    .btn-primary:active{transform:translateY(0)}
    .btn-secondary{
      color:var(--text-light);border:1px solid rgba(255,247,240,.34);
      background:rgba(255,247,240,.06);
    }
    .btn-secondary:hover{background:rgba(255,247,240,.12);border-color:rgba(200,154,91,.55);transform:translateY(-2px)}
    .btn-light{
      color:var(--text);background:#fff7f0;border:1px solid rgba(36,28,29,.08);
      box-shadow:0 12px 28px rgba(42,25,20,.08);
    }
    .btn-light:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(42,25,20,.13)}
    .site-header{
      position:sticky;top:0;z-index:50;height:var(--header-h);
      background:rgba(21,19,22,.92);backdrop-filter:blur(16px);
      border-bottom:1px solid rgba(255,247,240,.09);
    }
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{
      display:flex;align-items:center;gap:12px;color:var(--text-light);
      min-width:0;font-weight:900;letter-spacing:.01em;
    }
    .brand-mark{
      width:38px;height:38px;border-radius:14px;
      background:radial-gradient(circle at 30% 25%,#fff1d5 0 12%,transparent 13%),linear-gradient(135deg,var(--rose),var(--copper));
      box-shadow:0 12px 28px rgba(200,154,91,.24);
      flex:0 0 auto;
    }
    .brand-name{
      max-width:360px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
      font-size:18px;line-height:1.2;
    }
    .desktop-nav{display:flex;align-items:center;gap:4px}
    .desktop-nav a{
      color:rgba(255,247,240,.78);font-weight:700;font-size:15px;
      padding:10px 13px;border-radius:999px;transition:background .2s var(--ease),color .2s var(--ease);
    }
    .desktop-nav a:hover,.desktop-nav a.active{color:#fff;background:rgba(255,247,240,.09)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .age-mini{
      color:#fff;background:rgba(200,154,91,.18);border:1px solid rgba(200,154,91,.35);
      padding:8px 11px;border-radius:999px;font-size:13px;font-weight:900;
    }
    .menu-toggle{
      display:none;width:46px;height:46px;border-radius:14px;
      border:1px solid rgba(255,247,240,.15);color:var(--text-light);
      align-items:center;justify-content:center;background:rgba(255,247,240,.06);
    }
    .menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{
      width:20px;height:2px;background:currentColor;border-radius:4px;display:block;position:relative;transition:.22s var(--ease);
    }
    .menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0}
    .menu-toggle span::before{top:-7px}.menu-toggle span::after{top:7px}
    .menu-toggle.is-open span{background:transparent}
    .menu-toggle.is-open span::before{top:0;transform:rotate(45deg);background:var(--text-light)}
    .menu-toggle.is-open span::after{top:0;transform:rotate(-45deg);background:var(--text-light)}
    .mobile-panel{
      display:none;position:fixed;inset:var(--header-h) 16px auto 16px;
      background:#21191a;border:1px solid rgba(255,247,240,.14);
      border-radius:22px;padding:14px;box-shadow:var(--shadow-strong);z-index:60;
    }
    .mobile-panel a{display:flex;align-items:center;justify-content:space-between;min-height:48px;color:var(--text-light);padding:10px 12px;border-radius:14px;font-weight:800}
    .mobile-panel a:hover{background:rgba(255,247,240,.08)}
    .mobile-note{margin-top:10px;padding:13px;border-radius:16px;background:rgba(200,154,91,.12);color:rgba(255,247,240,.84);font-size:14px;border:1px solid rgba(200,154,91,.22)}

    .hero{
      position:relative;overflow:hidden;background:
        radial-gradient(circle at 18% 16%,rgba(183,110,121,.28),transparent 28%),
        radial-gradient(circle at 85% 26%,rgba(200,154,91,.20),transparent 32%),
        linear-gradient(180deg,var(--bg-dark),var(--bg-dark-2));
      color:var(--text-light);padding:86px 0 58px;
    }
    .hero::after{
      content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');
      background-size:cover;background-position:center;opacity:.18;mix-blend-mode:screen;filter:saturate(.85) contrast(1.05);
    }
    .hero .container{position:relative;z-index:1}
    .hero-grid{
      display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);
      gap:44px;align-items:center;
    }
    .hero-copy{padding:34px 0}
    .hero h1{
      margin-top:18px;font-size:clamp(34px,5.2vw,56px);line-height:1.14;
      letter-spacing:-.045em;font-weight:900;max-width:790px;
    }
    .hero-sub{
      margin-top:22px;max-width:710px;color:rgba(255,247,240,.80);
      font-size:18px;line-height:1.9;
    }
    .hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:32px}
    .hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
    .hero-visual{
      position:relative;min-height:520px;border-radius:34px;padding:18px;
      background:linear-gradient(145deg,rgba(255,247,240,.12),rgba(255,247,240,.04));
      border:1px solid rgba(255,247,240,.16);box-shadow:var(--shadow-strong);
      overflow:hidden;
    }
    .hero-visual::before{
      content:"";position:absolute;inset:18px;border-radius:28px;
      background:linear-gradient(180deg,rgba(21,19,22,.18),rgba(21,19,22,.72)),url('/assets/images/backpic/back-2.webp');
      background-size:cover;background-position:center;filter:saturate(.92);
    }
    .floating-card{
      position:absolute;z-index:2;border:1px solid rgba(255,247,240,.16);
      background:rgba(21,19,22,.72);backdrop-filter:blur(14px);
      color:var(--text-light);border-radius:22px;padding:18px;box-shadow:0 22px 54px rgba(0,0,0,.24);
    }
    .float-main{left:36px;right:36px;bottom:34px}
    .float-top{right:34px;top:36px;max-width:250px}
    .float-side{left:28px;top:165px;max-width:230px}
    .floating-card strong{display:block;font-size:18px;margin-bottom:6px}
    .floating-card p{color:rgba(255,247,240,.72);font-size:14px;line-height:1.7}
    .mini-row{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:14px;padding-top:14px;border-top:1px solid rgba(255,247,240,.12)}
    .mini-row span{font-size:13px;color:rgba(255,247,240,.68)}

    .notice-strip{
      margin-top:-1px;background:#21191a;border-top:1px solid rgba(255,247,240,.08);
      border-bottom:1px solid rgba(255,247,240,.08);color:var(--text-light);
    }
    .notice-items{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;padding:18px 0}
    .notice-pill{
      display:flex;align-items:center;gap:10px;min-height:52px;padding:12px 16px;
      border-radius:999px;background:rgba(255,247,240,.055);border:1px solid rgba(255,247,240,.10);
      color:rgba(255,247,240,.82);font-weight:700;font-size:14px;
    }
    .notice-dot{width:9px;height:9px;border-radius:999px;background:var(--copper);box-shadow:0 0 0 5px rgba(200,154,91,.12);flex:0 0 auto}

    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:32px}
    .section-title{font-size:clamp(26px,3.5vw,38px);line-height:1.22;letter-spacing:-.03em;font-weight:900;color:var(--text)}
    .section-desc{max-width:630px;color:var(--text-muted);font-size:16px;margin-top:12px}
    .section-link{
      display:inline-flex;align-items:center;gap:8px;color:#7a4f25;font-weight:900;
      padding:10px 0;position:relative;white-space:nowrap;
    }
    .section-link::after{
      content:"";position:absolute;left:0;right:100%;bottom:8px;height:2px;background:var(--rose);
      transition:right .22s var(--ease);
    }
    .section-link:hover{color:var(--rose-dark)}
    .section-link:hover::after{right:0}

    .guide-grid{
      display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:stretch;
    }
    .feature-card{
      position:relative;min-height:500px;border-radius:var(--radius-xl);overflow:hidden;color:var(--text-light);
      background:#201819;box-shadow:var(--shadow-strong);border:1px solid rgba(255,247,240,.12);
    }
    .feature-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;filter:saturate(.9) contrast(1.04)}
    .feature-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(21,19,22,.08),rgba(21,19,22,.86))}
    .feature-content{position:absolute;z-index:1;left:0;right:0;bottom:0;padding:32px}
    .feature-content h2{font-size:32px;line-height:1.24;margin:14px 0 12px;letter-spacing:-.03em}
    .feature-content p{color:rgba(255,247,240,.78);max-width:620px}
    .stack-cards{display:grid;gap:18px}
    .small-card{
      background:#fffaf5;border:1px solid rgba(36,28,29,.08);border-radius:var(--radius-lg);
      padding:24px;box-shadow:var(--shadow);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
    }
    .small-card:hover{transform:translateY(-3px);box-shadow:0 24px 55px rgba(42,25,20,.12);border-color:rgba(183,110,121,.24)}
    .small-card h3{font-size:21px;line-height:1.32;margin:12px 0 8px}
    .small-card p{color:var(--text-muted);font-size:15px}
    .card-link{display:inline-flex;margin-top:16px;color:#7a4f25;font-weight:900}
    .card-link:hover{color:var(--rose-dark)}

    .flow-wrap{
      border-radius:34px;background:linear-gradient(135deg,#fff7f0,#eadbd5);
      border:1px solid rgba(36,28,29,.08);box-shadow:var(--shadow);
      padding:38px;display:grid;grid-template-columns:1fr .88fr;gap:36px;align-items:center;
    }
    .check-list{display:grid;gap:13px;margin-top:24px}
    .check-list li{list-style:none;display:flex;gap:12px;align-items:flex-start;color:var(--text-muted)}
    .check-list li::before{
      content:"";width:20px;height:20px;border-radius:999px;flex:0 0 auto;margin-top:4px;
      background:radial-gradient(circle,#fff 0 28%,transparent 30%),linear-gradient(135deg,var(--rose),var(--copper));
    }
    .steps{display:grid;gap:14px}
    .step-card{
      display:grid;grid-template-columns:58px 1fr;gap:15px;align-items:center;
      padding:18px;border-radius:20px;background:rgba(255,255,255,.62);
      border:1px solid rgba(36,28,29,.08);
    }
    .step-num{
      width:58px;height:58px;border-radius:18px;display:grid;place-items:center;
      background:#21191a;color:var(--copper);font-size:24px;font-weight:900;
    }
    .step-card strong{font-size:18px}.step-card p{color:var(--text-muted);font-size:14px;margin-top:2px}

    .stream{overflow:hidden}
    .stream-row{
      display:grid;grid-auto-flow:column;grid-auto-columns:minmax(280px,365px);
      gap:18px;overflow-x:auto;padding:4px 4px 18px;scroll-snap-type:x mandatory;
      scrollbar-color:rgba(183,110,121,.45) rgba(36,28,29,.08);
    }
    .stream-card{
      scroll-snap-align:start;min-height:245px;position:relative;border-radius:24px;overflow:hidden;
      color:var(--text-light);background:#201819;border:1px solid rgba(255,247,240,.12);
      transition:transform .22s var(--ease),box-shadow .22s var(--ease);
    }
    .stream-card:hover{transform:translateY(-3px);box-shadow:0 22px 46px rgba(42,25,20,.18)}
    .stream-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:saturate(.9)}
    .stream-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(21,19,22,.16),rgba(21,19,22,.82))}
    .stream-card-content{position:absolute;z-index:1;inset:auto 0 0;padding:22px}
    .stream-card h3{font-size:21px;line-height:1.35;margin:10px 0}
    .stream-card p{font-size:14px;color:rgba(255,247,240,.75)}

    .updates{background:var(--bg-soft)}
    .updates-grid{display:grid;grid-template-columns:.96fr 1.04fr;gap:24px;align-items:start}
    .update-feature,.update-list-card,.empty-card{
      background:#fffaf5;border:1px solid rgba(36,28,29,.08);
      border-radius:var(--radius-xl);box-shadow:var(--shadow);
    }
    .update-feature{overflow:hidden;transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
    .update-feature:hover{transform:translateY(-3px);box-shadow:0 26px 58px rgba(42,25,20,.12)}
    .update-cover{height:246px;position:relative;overflow:hidden;background:#21191a}
    .update-cover img{width:100%;height:100%;object-fit:cover;opacity:.9}
    .update-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(21,19,22,.05),rgba(21,19,22,.62))}
    .update-feature-body{padding:26px}
    .meta{display:flex;gap:10px;flex-wrap:wrap;align-items:center;color:var(--text-muted);font-size:13px;font-weight:700}
    .update-title{font-size:24px;line-height:1.36;margin:14px 0 10px;letter-spacing:-.02em}
    .update-title a{background:linear-gradient(var(--rose),var(--rose)) left bottom/0 2px no-repeat;transition:color .22s var(--ease),background-size .22s var(--ease)}
    .update-title a:hover{color:var(--rose-dark);background-size:100% 2px}
    .update-summary{color:var(--text-muted)}
    .update-list-card{padding:12px}
    .news-item{
      display:grid;grid-template-columns:1fr auto;gap:16px;align-items:start;
      padding:18px;border-radius:20px;border:1px solid transparent;
      transition:background .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
    }
    .news-item + .news-item{border-top:1px solid rgba(36,28,29,.08)}
    .news-item:hover{background:#fff4ed;transform:translateY(-2px);border-color:rgba(183,110,121,.18)}
    .news-item h3{font-size:18px;line-height:1.42;margin-bottom:7px}
    .news-item h3 a{background:linear-gradient(var(--rose),var(--rose)) left bottom/0 2px no-repeat;transition:color .22s var(--ease),background-size .22s var(--ease)}
    .news-item h3 a:hover{color:var(--rose-dark);background-size:100% 2px}
    .news-item p{color:var(--text-muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .news-date{text-align:right;color:#8b6a45;font-size:13px;font-weight:800;white-space:nowrap}
    .empty-card{grid-column:1/-1;padding:34px;text-align:center}
    .empty-card p{color:var(--text-muted);margin:8px 0 20px}

    .proof-grid{
      display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
    }
    .proof-card{
      padding:26px;border-radius:24px;background:#fffaf5;border:1px solid rgba(36,28,29,.08);
      box-shadow:var(--shadow);
    }
    .proof-num{font-size:34px;font-weight:900;line-height:1;color:var(--rose-dark);margin-bottom:12px}
    .proof-card h3{font-size:19px;margin-bottom:8px}
    .proof-card p{font-size:15px;color:var(--text-muted)}

    .faq-wrap{display:grid;grid-template-columns:.82fr 1.18fr;gap:28px;align-items:start}
    .faq-aside{
      position:sticky;top:calc(var(--header-h) + 24px);
      background:#21191a;color:var(--text-light);border-radius:var(--radius-xl);
      padding:30px;border:1px solid rgba(255,247,240,.12);
    }
    .faq-aside p{color:rgba(255,247,240,.76);margin-top:12px}
    .accordion{display:grid;gap:12px}
    .faq-item{
      background:#fffaf5;border:1px solid rgba(36,28,29,.08);
      border-radius:20px;box-shadow:0 12px 30px rgba(42,25,20,.06);overflow:hidden;
    }
    .faq-question{
      width:100%;min-height:62px;padding:18px 20px;display:flex;align-items:center;justify-content:space-between;gap:18px;
      text-align:left;color:var(--text);font-weight:900;font-size:17px;
    }
    .faq-icon{width:28px;height:28px;border-radius:999px;background:rgba(200,154,91,.14);position:relative;flex:0 0 auto}
    .faq-icon::before,.faq-icon::after{content:"";position:absolute;background:#7a4f25;border-radius:4px;left:8px;right:8px;top:13px;height:2px}
    .faq-icon::after{transform:rotate(90deg);transition:transform .22s var(--ease)}
    .faq-item.open .faq-icon::after{transform:rotate(0)}
    .faq-answer{
      max-height:0;overflow:hidden;transition:max-height .28s var(--ease);
      color:var(--text-muted);background:#fff4ed;
    }
    .faq-answer-inner{padding:0 20px 20px;font-size:15px}
    .faq-item.open .faq-answer{max-height:220px}

    .search-card{
      border-radius:34px;background:
        radial-gradient(circle at 12% 22%,rgba(183,110,121,.24),transparent 26%),
        linear-gradient(135deg,#21191a,#151316);
      color:var(--text-light);padding:38px;display:grid;grid-template-columns:1fr .92fr;gap:28px;
      border:1px solid rgba(255,247,240,.12);box-shadow:var(--shadow-strong);
    }
    .search-card p{color:rgba(255,247,240,.76);margin-top:12px}
    .search-form{display:flex;gap:12px;align-items:center;align-self:center;background:rgba(255,247,240,.08);padding:10px;border-radius:999px;border:1px solid rgba(255,247,240,.13)}
    .search-form input{
      flex:1;min-width:0;border:0;outline:0;background:#fff7f0;color:var(--text);
      min-height:48px;border-radius:999px;padding:0 18px;
    }
    .search-form input:focus{box-shadow:0 0 0 4px rgba(200,154,91,.20)}

    .bottom-cta{
      background:linear-gradient(180deg,var(--bg-soft),#eadbd5);
      padding:0 0 92px;
    }
    .cta-panel{
      position:relative;overflow:hidden;border-radius:36px;background:#21191a;color:var(--text-light);
      padding:42px;display:flex;align-items:center;justify-content:space-between;gap:28px;
      border:1px solid rgba(255,247,240,.12);box-shadow:var(--shadow-strong);
    }
    .cta-panel::before{
      content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-3.webp') center/cover;opacity:.16;filter:saturate(.85);
    }
    .cta-panel > *{position:relative;z-index:1}
    .cta-panel h2{font-size:clamp(26px,3.4vw,38px);line-height:1.24;letter-spacing:-.03em;max-width:720px}
    .cta-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}

    .site-footer{
      background:var(--bg-dark);color:var(--text-light);padding:54px 0 28px;
      border-top:1px solid rgba(255,247,240,.10);
    }
    .footer-grid{display:grid;grid-template-columns:1.25fr .75fr .75fr;gap:34px}
    .footer-brand{font-size:20px;font-weight:900;margin-bottom:12px}
    .footer-text{color:rgba(255,247,240,.70);max-width:640px;font-size:14px}
    .footer-col h3{font-size:15px;margin-bottom:12px;color:#fff}
    .footer-links{display:grid;gap:9px}
    .footer-links a,.footer-links span{color:rgba(255,247,240,.68);font-size:14px}
    .footer-links a:hover{color:var(--copper)}
    .copyright{
      margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,247,240,.10);
      color:rgba(255,247,240,.56);font-size:13px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    }

    @media (max-width:1024px){
      .container{width:min(100% - 48px,var(--container))}
      .hero-grid,.guide-grid,.flow-wrap,.updates-grid,.faq-wrap,.search-card{grid-template-columns:1fr}
      .hero{padding-top:64px}
      .hero-visual{min-height:430px}
      .notice-items{grid-template-columns:repeat(2,1fr)}
      .faq-aside{position:relative;top:auto}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      :root{--header-h:68px}
      .container{width:min(100% - 32px,var(--container))}
      .section{padding:62px 0}
      .desktop-nav,.header-actions .btn,.age-mini{display:none}
      .menu-toggle{display:flex}
      .mobile-panel.show{display:block}
      .brand-name{max-width:220px;font-size:16px}
      .hero-copy{padding:18px 0 4px}
      .hero h1{font-size:36px}
      .hero-sub{font-size:16px}
      .hero-actions{align-items:stretch}
      .hero-actions .btn{flex:1;min-width:190px}
      .float-side{display:none}
      .float-top{left:28px;right:28px;max-width:none}
      .float-main{left:28px;right:28px}
      .notice-items{grid-template-columns:1fr}
      .notice-pill{border-radius:18px}
      .section-head{align-items:flex-start;flex-direction:column}
      .feature-card{min-height:430px}
      .flow-wrap,.search-card,.cta-panel{padding:26px;border-radius:26px}
      .proof-grid{grid-template-columns:1fr}
      .news-item{grid-template-columns:1fr}
      .news-date{text-align:left}
      .cta-panel{display:grid}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      .container{width:min(100% - 28px,var(--container))}
      .brand-mark{width:34px;height:34px;border-radius:12px}
      .brand-name{max-width:176px}
      .hero{padding:48px 0 46px}
      .hero h1{font-size:32px}
      .hero-actions{flex-direction:column}
      .hero-actions .btn,.search-form .btn{width:100%}
      .hero-visual{min-height:390px;border-radius:24px}
      .hero-visual::before{inset:12px;border-radius:20px}
      .floating-card{padding:14px;border-radius:18px}
      .float-top{top:24px;left:22px;right:22px}
      .float-main{left:22px;right:22px;bottom:24px}
      .feature-content{padding:24px}
      .feature-content h2{font-size:26px}
      .search-form{border-radius:22px;flex-direction:column}
      .footer-text,.copyright{font-size:13px}
    }

/* roulang page: article */
:root{
      --bg-dark:#151316;
      --bg-dark-2:#1e1718;
      --bg-soft:#f5efe8;
      --bg-warm:#fbf7f2;
      --bg-rose:#e8d8d2;
      --text:#241c1d;
      --text-muted:#7a6a67;
      --text-light:#fff7f0;
      --rose:#b76e79;
      --rose-dark:#96545f;
      --copper:#c89a5b;
      --copper-dark:#a87a3c;
      --border:rgba(36,28,29,.12);
      --border-light:rgba(255,247,240,.14);
      --shadow:0 18px 45px rgba(42,25,20,.08);
      --shadow-strong:0 26px 70px rgba(20,13,12,.22);
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --container:1210px;
      --header-h:76px;
      --ease:cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,Arial,sans-serif;
      background:var(--bg-soft);
      color:var(--text);
      line-height:1.75;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
      overflow-x:hidden;
    }
    body.menu-open{overflow:hidden}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{border:0;background:none;cursor:pointer}
    a:focus-visible,button:focus-visible,input:focus-visible{
      outline:3px solid rgba(200,154,91,.55);
      outline-offset:3px;
      border-radius:12px;
    }
    .container{width:min(100% - 64px,var(--container));margin-inline:auto}
    .section{padding:88px 0}
    .section-soft{background:var(--bg-warm)}
    .eyebrow{
      display:inline-flex;align-items:center;gap:9px;
      padding:7px 12px;border-radius:999px;
      background:rgba(200,154,91,.12);color:var(--copper-dark);
      font-size:14px;font-weight:800;letter-spacing:.02em;
      border:1px solid rgba(200,154,91,.28);
    }
    .badge{
      display:inline-flex;align-items:center;justify-content:center;gap:6px;
      min-height:28px;padding:4px 10px;border-radius:999px;
      font-size:13px;font-weight:800;white-space:nowrap;
    }
    .badge-age{background:linear-gradient(135deg,var(--rose),var(--copper));color:#fff}
    .badge-soft{background:rgba(255,247,240,.12);color:var(--text-light);border:1px solid var(--border-light)}
    .badge-warm{background:rgba(200,154,91,.14);color:#6e4821;border:1px solid rgba(200,154,91,.24)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:10px;
      min-height:48px;padding:13px 22px;border-radius:999px;
      font-weight:800;letter-spacing:.01em;
      transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
      position:relative;isolation:isolate;text-decoration:none;
    }
    .btn-primary{
      color:#fff;background:linear-gradient(135deg,var(--rose),var(--copper));
      box-shadow:0 14px 34px rgba(183,110,121,.24);
      border:0;
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 42px rgba(183,110,121,.32);color:#fff}
    .btn-primary:active{transform:translateY(0)}
    .btn-secondary{
      color:var(--text-light);border:1px solid rgba(255,247,240,.34);
      background:rgba(255,247,240,.06);
    }
    .btn-secondary:hover{background:rgba(255,247,240,.12);border-color:rgba(200,154,91,.55);transform:translateY(-2px);color:var(--text-light)}
    .btn-light{
      color:var(--text);background:#fff7f0;border:1px solid rgba(36,28,29,.08);
      box-shadow:0 12px 28px rgba(42,25,20,.08);
    }
    .btn-light:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(42,25,20,.13);color:var(--text)}
    .site-header{
      position:sticky;top:0;z-index:50;height:var(--header-h);
      background:rgba(21,19,22,.92);backdrop-filter:blur(16px);
      border-bottom:1px solid rgba(255,247,240,.09);
    }
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{
      display:flex;align-items:center;gap:12px;color:var(--text-light);
      min-width:0;font-weight:900;letter-spacing:.01em;
    }
    .brand:hover{color:var(--text-light)}
    .brand-mark{
      width:38px;height:38px;border-radius:14px;
      background:radial-gradient(circle at 30% 25%,#fff1d5 0 12%,transparent 13%),linear-gradient(135deg,var(--rose),var(--copper));
      box-shadow:0 12px 28px rgba(200,154,91,.24);
      flex:0 0 auto;
    }
    .brand-name{
      max-width:360px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
      font-size:18px;line-height:1.2;
    }
    .desktop-nav{display:flex;align-items:center;gap:4px}
    .desktop-nav a{
      color:rgba(255,247,240,.78);font-weight:700;font-size:15px;
      padding:10px 13px;border-radius:999px;transition:background .2s var(--ease),color .2s var(--ease);
    }
    .desktop-nav a:hover,.desktop-nav a.active{color:#fff;background:rgba(255,247,240,.09)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .age-mini{
      color:rgba(255,247,240,.72);
      font-size:13px;
      border:1px solid rgba(255,247,240,.14);
      border-radius:999px;
      padding:7px 10px;
      white-space:nowrap;
    }
    .menu-toggle{
      display:none;width:46px;height:46px;border-radius:14px;
      border:1px solid rgba(255,247,240,.15);color:var(--text-light);
      align-items:center;justify-content:center;background:rgba(255,247,240,.06);
    }
    .menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{
      width:20px;height:2px;background:currentColor;border-radius:4px;display:block;position:relative;transition:.22s var(--ease);
    }
    .menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0}
    .menu-toggle span::before{top:-7px}
    .menu-toggle span::after{top:7px}
    .menu-toggle.is-open span{background:transparent}
    .menu-toggle.is-open span::before{top:0;transform:rotate(45deg);background:var(--text-light)}
    .menu-toggle.is-open span::after{top:0;transform:rotate(-45deg);background:var(--text-light)}
    .mobile-panel{
      display:none;position:fixed;inset:var(--header-h) 16px auto 16px;
      background:#21191a;border:1px solid rgba(255,247,240,.14);
      border-radius:22px;padding:14px;box-shadow:var(--shadow-strong);z-index:60;
    }
    .mobile-panel a{display:flex;align-items:center;justify-content:space-between;min-height:48px;color:var(--text-light);padding:10px 12px;border-radius:14px;font-weight:800}
    .mobile-panel a:hover{background:rgba(255,247,240,.08)}
    .mobile-note{margin-top:10px;padding:13px;border-radius:16px;background:rgba(200,154,91,.12);color:rgba(255,247,240,.84);font-size:14px;border:1px solid rgba(200,154,91,.22)}

    .article-hero{
      position:relative;
      overflow:hidden;
      color:var(--text-light);
      padding:58px 0 72px;
      background:
        linear-gradient(90deg,rgba(21,19,22,.95),rgba(30,23,24,.80),rgba(21,19,22,.90)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    }
    .article-hero::after{
      content:"";
      position:absolute;inset:auto -80px -160px auto;
      width:420px;height:420px;border-radius:50%;
      background:radial-gradient(circle,rgba(200,154,91,.22),transparent 62%);
      pointer-events:none;
    }
    .breadcrumb{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap;
      margin:0 0 22px;padding:0;color:rgba(255,247,240,.66);
      font-size:14px;
    }
    .breadcrumb a{
      color:rgba(255,247,240,.72);
      transition:color .2s var(--ease);
    }
    .breadcrumb a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--copper);text-underline-offset:4px}
    .breadcrumb .sep{color:rgba(255,247,240,.32)}
    .article-kicker{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px;
    }
    .article-title{
      max-width:930px;
      font-size:clamp(30px,5vw,52px);
      line-height:1.14;
      font-weight:900;
      letter-spacing:-.035em;
      margin:0;
    }
    .article-desc{
      max-width:760px;
      margin:20px 0 0;
      color:rgba(255,247,240,.78);
      font-size:17px;
      line-height:1.85;
    }
    .article-meta{
      display:flex;align-items:center;gap:12px;flex-wrap:wrap;
      margin-top:24px;
      color:rgba(255,247,240,.78);
      font-size:14px;
    }
    .meta-pill{
      display:inline-flex;align-items:center;gap:8px;
      min-height:34px;padding:6px 12px;
      border-radius:999px;
      border:1px solid rgba(255,247,240,.13);
      background:rgba(255,247,240,.07);
    }
    .reader-shell{
      position:relative;
      margin-top:-36px;
      z-index:2;
    }
    .reader-layout{
      display:grid;
      grid-template-columns:minmax(0,820px) minmax(260px,1fr);
      gap:30px;
      align-items:start;
    }
    .article-card{
      background:var(--bg-warm);
      border:1px solid rgba(36,28,29,.08);
      border-radius:var(--radius-xl);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .cover-frame{
      position:relative;
      height:330px;
      overflow:hidden;
      background:var(--bg-rose);
    }
    .cover-frame img{width:100%;height:100%;object-fit:cover}
    .cover-frame::after{
      content:"";
      position:absolute;inset:0;
      background:linear-gradient(180deg,transparent 42%,rgba(21,19,22,.72));
    }
    .cover-note{
      position:absolute;
      left:24px;right:24px;bottom:22px;
      z-index:2;
      display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
      color:var(--text-light);
    }
    .cover-note strong{font-size:18px}
    .article-body{
      padding:42px 46px 48px;
      font-size:18px;
      line-height:1.9;
      color:#2a2122;
    }
    .article-body > *:first-child{margin-top:0}
    .article-body > *:last-child{margin-bottom:0}
    .article-body p{margin:0 0 1.15em}
    .article-body h2{
      margin:2.1em 0 .75em;
      font-size:30px;
      line-height:1.25;
      font-weight:900;
      letter-spacing:-.02em;
      color:var(--text);
    }
    .article-body h3{
      margin:1.8em 0 .65em;
      font-size:23px;
      line-height:1.35;
      font-weight:850;
      color:var(--text);
    }
    .article-body h4{
      margin:1.4em 0 .5em;
      font-size:19px;
      font-weight:850;
    }
    .article-body a{
      color:var(--rose-dark);
      font-weight:750;
      text-decoration:underline;
      text-decoration-color:rgba(183,110,121,.32);
      text-underline-offset:4px;
      transition:color .2s var(--ease),text-decoration-color .2s var(--ease);
    }
    .article-body a:hover{color:var(--copper-dark);text-decoration-color:var(--copper)}
    .article-body ul,.article-body ol{
      margin:0 0 1.25em;
      padding-left:1.35em;
    }
    .article-body li{margin:.35em 0}
    .article-body blockquote{
      margin:1.6em 0;
      padding:20px 24px;
      border-left:5px solid var(--copper);
      background:#fff3e8;
      border-radius:0 var(--radius-md) var(--radius-md) 0;
      color:#4b3a36;
    }
    .article-body figure{margin:1.8em 0}
    .article-body figcaption{
      margin-top:10px;
      font-size:14px;
      color:var(--text-muted);
      text-align:center;
    }
    .article-body img{
      border-radius:20px;
      box-shadow:0 18px 46px rgba(42,25,20,.10);
      margin-inline:auto;
    }
    .article-body table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      overflow:hidden;
      border:1px solid rgba(36,28,29,.12);
      border-radius:16px;
      margin:1.5em 0;
      font-size:16px;
      background:#fffaf6;
    }
    .article-body th,.article-body td{
      padding:13px 15px;
      border-bottom:1px solid rgba(36,28,29,.09);
      vertical-align:top;
    }
    .article-body th{
      background:#f0e2d9;
      font-weight:850;
    }
    .article-body tr:last-child td{border-bottom:0}
    .article-body code{
      background:#f0e2d9;
      color:#74443d;
      border-radius:8px;
      padding:2px 6px;
      font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
      font-size:.92em;
    }
    .article-body pre{
      white-space:pre-wrap;
      background:#21191a;
      color:#fff7f0;
      border-radius:18px;
      padding:20px;
      overflow:auto;
      font-size:15px;
      line-height:1.75;
    }
    .not-found-box{
      padding:46px;
      text-align:center;
      background:#fff7f0;
      border:1px solid rgba(36,28,29,.08);
      border-radius:var(--radius-xl);
    }
    .not-found-box h2{
      margin:0 0 12px;
      font-size:30px;
      font-weight:900;
    }
    .not-found-box p{
      margin:0 auto 24px;
      max-width:560px;
      color:var(--text-muted);
    }
    .side-stack{
      position:sticky;
      top:calc(var(--header-h) + 24px);
      display:grid;
      gap:18px;
    }
    .side-card{
      border-radius:var(--radius-lg);
      border:1px solid rgba(36,28,29,.1);
      background:#fff7f0;
      box-shadow:0 16px 38px rgba(42,25,20,.06);
      padding:24px;
    }
    .side-card.dark{
      color:var(--text-light);
      background:
        linear-gradient(180deg,rgba(21,19,22,.86),rgba(21,19,22,.94)),
        url('/assets/images/coverpic/cover-2.webp') center/cover no-repeat;
      border-color:rgba(255,247,240,.16);
    }
    .side-card h2,.side-card h3{
      margin:0 0 12px;
      font-size:21px;
      line-height:1.35;
      font-weight:900;
    }
    .side-card p{
      margin:0;
      color:var(--text-muted);
      font-size:15px;
    }
    .side-card.dark p{color:rgba(255,247,240,.78)}
    .side-list{
      display:grid;
      gap:12px;
      margin-top:16px;
    }
    .side-list a{
      display:block;
      padding:13px 14px;
      border-radius:15px;
      border:1px solid rgba(36,28,29,.08);
      background:#fff;
      font-weight:800;
      color:var(--text);
      transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease);
    }
    .side-list a:hover{
      transform:translateY(-2px);
      border-color:rgba(183,110,121,.32);
      box-shadow:0 12px 28px rgba(42,25,20,.08);
      color:var(--rose-dark);
    }
    .reading-rule{
      margin-top:16px;
      padding:14px;
      border-radius:16px;
      background:rgba(200,154,91,.12);
      border:1px solid rgba(200,154,91,.22);
      color:#6d4b25;
      font-size:14px;
    }

    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:28px;
    }
    .section-head h2{
      margin:10px 0 0;
      font-size:clamp(25px,3vw,36px);
      line-height:1.22;
      font-weight:900;
      letter-spacing:-.02em;
    }
    .section-head p{
      margin:10px 0 0;
      max-width:620px;
      color:var(--text-muted);
    }
    .update-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:20px;
    }
    .update-card{
      position:relative;
      display:flex;
      flex-direction:column;
      min-height:260px;
      padding:24px;
      border-radius:var(--radius-lg);
      overflow:hidden;
      background:#fff7f0;
      border:1px solid rgba(36,28,29,.09);
      box-shadow:var(--shadow);
      transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
    }
    .update-card::before{
      content:"";
      position:absolute;inset:0 0 auto;
      height:5px;
      background:linear-gradient(90deg,var(--rose),var(--copper));
      opacity:.8;
    }
    .update-card:hover{
      transform:translateY(-4px);
      box-shadow:0 24px 58px rgba(42,25,20,.12);
      border-color:rgba(183,110,121,.26);
    }
    .update-card h3{
      margin:16px 0 10px;
      font-size:21px;
      line-height:1.35;
      font-weight:900;
    }
    .update-card h3 a{
      background:linear-gradient(currentColor,currentColor) left bottom/0 2px no-repeat;
      transition:color .2s var(--ease),background-size .25s var(--ease);
    }
    .update-card h3 a:hover{
      color:var(--rose-dark);
      background-size:100% 2px;
    }
    .update-card p{
      margin:0;
      color:var(--text-muted);
      font-size:15px;
      flex:1;
    }
    .card-meta{
      display:flex;align-items:center;justify-content:space-between;gap:12px;
      margin-top:22px;
      color:var(--text-muted);
      font-size:13px;
    }
    .faq-wrap{
      display:grid;
      grid-template-columns:.85fr 1.15fr;
      gap:32px;
      align-items:start;
    }
    .faq-intro{
      padding:32px;
      border-radius:var(--radius-xl);
      color:var(--text-light);
      background:
        linear-gradient(180deg,rgba(21,19,22,.86),rgba(30,23,24,.94)),
        url('/assets/images/coverpic/cover-3.webp') center/cover no-repeat;
      box-shadow:var(--shadow-strong);
      min-height:360px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .faq-intro h2{
      margin:14px 0 12px;
      font-size:34px;
      line-height:1.18;
      font-weight:900;
    }
    .faq-intro p{
      color:rgba(255,247,240,.78);
      margin:0;
    }
    .accordion-list{display:grid;gap:14px}
    .faq-item{
      border-radius:20px;
      background:#fff7f0;
      border:1px solid rgba(36,28,29,.09);
      box-shadow:0 14px 34px rgba(42,25,20,.06);
      overflow:hidden;
    }
    .faq-question{
      width:100%;
      min-height:62px;
      padding:18px 22px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      color:var(--text);
      font-weight:900;
      text-align:left;
    }
    .faq-icon{
      width:28px;height:28px;border-radius:999px;
      display:inline-flex;align-items:center;justify-content:center;
      color:#fff;background:linear-gradient(135deg,var(--rose),var(--copper));
      flex:0 0 auto;
      transition:transform .22s var(--ease);
    }
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .28s var(--ease);
    }
    .faq-answer p{
      margin:0;
      padding:0 22px 20px;
      color:var(--text-muted);
      line-height:1.8;
    }
    .faq-item.is-open .faq-icon{transform:rotate(45deg)}
    .faq-item.is-open .faq-answer{max-height:220px}

    .cta-band{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-xl);
      background:
        radial-gradient(circle at 12% 0,rgba(183,110,121,.30),transparent 34%),
        radial-gradient(circle at 88% 22%,rgba(200,154,91,.26),transparent 34%),
        linear-gradient(135deg,var(--bg-dark),var(--bg-dark-2));
      color:var(--text-light);
      padding:40px;
      display:grid;
      grid-template-columns:1fr auto;
      gap:30px;
      align-items:center;
      box-shadow:var(--shadow-strong);
    }
    .cta-band h2{
      margin:12px 0 10px;
      font-size:clamp(26px,3vw,38px);
      line-height:1.2;
      font-weight:900;
    }
    .cta-band p{
      margin:0;
      max-width:720px;
      color:rgba(255,247,240,.78);
    }
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}

    .site-footer{
      background:var(--bg-dark);
      color:var(--text-light);
      padding:64px 0 26px;
      border-top:1px solid rgba(255,247,240,.10);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:minmax(0,1.45fr) .75fr .9fr;
      gap:34px;
      align-items:start;
    }
    .footer-brand{
      font-size:24px;
      line-height:1.2;
      font-weight:950;
      margin-bottom:14px;
    }
    .footer-text{
      margin:0;
      max-width:620px;
      color:rgba(255,247,240,.70);
      font-size:15px;
    }
    .footer-col h3{
      margin:0 0 14px;
      font-size:16px;
      font-weight:900;
      color:#fff;
    }
    .footer-links{
      display:grid;
      gap:9px;
      color:rgba(255,247,240,.68);
      font-size:15px;
    }
    .footer-links a,.footer-links span{
      min-height:28px;
      display:flex;
      align-items:center;
    }
    .footer-links a{
      transition:color .2s var(--ease),transform .2s var(--ease);
    }
    .footer-links a:hover{
      color:#fff;
      transform:translateX(3px);
    }
    .copyright{
      margin-top:38px;
      padding-top:22px;
      border-top:1px solid rgba(255,247,240,.10);
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:rgba(255,247,240,.55);
      font-size:13px;
    }

    @media (max-width:1024px){
      :root{--header-h:70px}
      .container{width:min(100% - 48px,var(--container))}
      .desktop-nav,.age-mini{display:none}
      .menu-toggle{display:flex}
      .mobile-panel.is-open{display:block}
      .reader-layout{grid-template-columns:1fr}
      .side-stack{position:static;grid-template-columns:repeat(2,1fr)}
      .update-grid{grid-template-columns:repeat(2,1fr)}
      .faq-wrap{grid-template-columns:1fr}
      .cta-band{grid-template-columns:1fr}
      .cta-actions{justify-content:flex-start}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-grid > div:first-child{grid-column:1/-1}
    }
    @media (max-width:768px){
      .container{width:min(100% - 32px,var(--container))}
      .section{padding:62px 0}
      .brand-name{max-width:210px;font-size:16px}
      .header-actions .btn{display:none}
      .article-hero{padding:42px 0 64px}
      .article-desc{font-size:16px}
      .reader-shell{margin-top:-24px}
      .cover-frame{height:240px}
      .cover-note{left:18px;right:18px;bottom:18px}
      .article-body{padding:30px 24px 34px;font-size:17px;line-height:1.88}
      .article-body h2{font-size:25px}
      .article-body h3{font-size:21px}
      .side-stack{grid-template-columns:1fr}
      .section-head{display:block}
      .update-grid{grid-template-columns:1fr}
      .faq-intro{min-height:auto}
      .cta-band{padding:30px 24px}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:grid}
    }
    @media (max-width:520px){
      .container{width:min(100% - 28px,var(--container))}
      .brand{gap:9px}
      .brand-mark{width:34px;height:34px;border-radius:12px}
      .brand-name{max-width:160px}
      .badge-age{padding:3px 8px;font-size:12px}
      .article-meta{align-items:stretch}
      .meta-pill{width:100%;justify-content:center}
      .cover-frame{height:205px}
      .cover-note{display:block}
      .cover-note .badge{margin-top:10px}
      .article-body{padding:26px 18px 30px}
      .not-found-box{padding:34px 20px}
      .cta-actions,.btn{width:100%}
      .btn{padding-inline:18px}
      .mobile-panel{inset:var(--header-h) 10px auto 10px}
    }

/* 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}