/* roulang page: index */
:root{
      --primary:#0f766e;
      --primary-dark:#0b5f58;
      --primary-soft:#e7f5f2;
      --accent:#f59e0b;
      --accent-soft:#fff4dc;
      --ink:#1f2933;
      --muted:#64748b;
      --weak:#94a3b8;
      --bg:#fafaf7;
      --paper:#ffffff;
      --warm:#f6efe3;
      --line:#e5e7eb;
      --line-strong:#d7dee8;
      --footer:#10231f;
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:28px;
      --shadow:0 14px 34px rgba(15,23,42,.08);
      --shadow-hover:0 18px 46px rgba(15,23,42,.13);
      --container:1200px;
      --ease:all .24s ease;
    }

    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",Arial,sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at 7% 6%, rgba(15,118,110,.08), transparent 34%),
        radial-gradient(circle at 92% 18%, rgba(245,158,11,.10), transparent 30%),
        var(--bg);
      line-height:1.75;
      font-size:16px;
      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;background:none}
    ::selection{background:rgba(15,118,110,.18)}
    :focus-visible{outline:3px solid rgba(15,118,110,.22);outline-offset:3px;border-radius:10px}

    .container{width:min(var(--container), calc(100% - 40px));margin-inline:auto}
    .section{padding:86px 0}
    .section-tight{padding:60px 0}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;
      background:var(--primary-soft);color:var(--primary-dark);
      font-size:14px;font-weight:700;letter-spacing:.02em;
      border:1px solid rgba(15,118,110,.14);
    }
    .eyebrow:before{
      content:"";width:8px;height:8px;border-radius:50%;
      background:var(--accent);box-shadow:0 0 0 4px rgba(245,158,11,.14);
    }
    .section-head{display:flex;justify-content:space-between;gap:28px;align-items:flex-end;margin-bottom:34px}
    .section-title{font-size:34px;line-height:1.24;font-weight:800;letter-spacing:-.03em;color:var(--ink);margin-top:14px}
    .section-desc{color:var(--muted);max-width:620px;margin-top:12px;font-size:17px}
    .muted{color:var(--muted)}
    .small{font-size:14px;color:var(--muted)}
    .badge{
      display:inline-flex;align-items:center;gap:6px;
      padding:6px 10px;border-radius:999px;
      background:var(--accent-soft);color:#9a5c00;font-weight:700;font-size:13px;
      border:1px solid rgba(245,158,11,.20);
      white-space:nowrap;
    }
    .tag{
      display:inline-flex;align-items:center;
      padding:6px 10px;border:1px solid var(--line);
      border-radius:999px;background:#fff;color:var(--muted);
      font-size:13px;font-weight:650;
    }

    .site-header{
      position:sticky;top:0;z-index:50;
      background:rgba(250,250,247,.92);
      backdrop-filter:saturate(1.2) blur(10px);
      border-bottom:1px solid rgba(229,231,235,.88);
      box-shadow:0 8px 22px rgba(15,23,42,.04);
    }
    .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:inline-flex;align-items:center;gap:12px;font-weight:850;letter-spacing:-.02em}
    .brand-mark{
      width:42px;height:42px;border-radius:15px;
      display:grid;place-items:center;color:#fff;font-weight:900;
      background:linear-gradient(135deg,var(--primary),#129887);
      box-shadow:0 10px 24px rgba(15,118,110,.22);
      position:relative;
    }
    .brand-mark:after{
      content:"";position:absolute;right:7px;bottom:7px;width:9px;height:9px;border-radius:50%;
      background:var(--accent);border:2px solid rgba(255,255,255,.82);
    }
    .brand-text{font-size:20px}
    .nav-links{display:flex;align-items:center;gap:6px}
    .nav-links a{
      padding:10px 13px;border-radius:999px;color:#334155;font-weight:700;font-size:15px;
      transition:var(--ease);position:relative;
    }
    .nav-links a:hover,.nav-links a.active{color:var(--primary-dark);background:var(--primary-soft)}
    .nav-actions{display:flex;align-items:center;gap:12px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:44px;padding:12px 18px;border-radius:999px;
      font-weight:800;border:1px solid transparent;
      transition:var(--ease);white-space:nowrap;
    }
    .btn-primary{background:var(--primary);color:#fff;box-shadow:0 12px 24px rgba(15,118,110,.20)}
    .btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 16px 34px rgba(15,118,110,.28)}
    .btn-secondary{background:#fff;color:var(--primary-dark);border-color:rgba(15,118,110,.18)}
    .btn-secondary:hover{border-color:rgba(15,118,110,.38);transform:translateY(-2px);box-shadow:var(--shadow)}
    .btn-ghost{color:var(--primary-dark);background:rgba(15,118,110,.08)}
    .btn-ghost:hover{background:rgba(15,118,110,.14);transform:translateY(-1px)}
    .menu-toggle{
      display:none;width:46px;height:46px;border-radius:14px;
      border:1px solid var(--line);background:#fff;color:var(--ink);
    }
    .menu-toggle span{display:block;width:20px;height:2px;background:var(--ink);margin:5px auto;border-radius:99px;transition:var(--ease)}
    .mobile-panel{display:none}

    .hero{
      position:relative;padding:82px 0 46px;
      overflow:hidden;
    }
    .hero:before{
      content:"";position:absolute;inset:0;
      background-image:
        linear-gradient(rgba(15,118,110,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15,118,110,.05) 1px, transparent 1px);
      background-size:34px 34px;
      mask-image:linear-gradient(to bottom, rgba(0,0,0,.75), transparent 78%);
      pointer-events:none;
    }
    .hero-grid{
      position:relative;z-index:1;
      display:grid;grid-template-columns:1.04fr .96fr;gap:44px;align-items:center;
    }
    .hero-copy{padding:22px 0}
    h1{
      font-size:54px;line-height:1.15;font-weight:900;letter-spacing:-.045em;
      margin:18px 0 20px;color:#13201e;
    }
    .hero-lead{font-size:19px;color:#475569;max-width:680px;line-height:1.85}
    .hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:30px 0 22px}
    .hero-note{
      display:flex;gap:10px;align-items:flex-start;color:var(--muted);font-size:14px;
      max-width:620px;
    }
    .hero-note b{color:var(--primary-dark)}
    .hero-showcase{
      border-radius:32px;background:#fff;padding:12px;border:1px solid rgba(15,118,110,.12);
      box-shadow:0 26px 60px rgba(15,23,42,.12);
      position:relative;isolation:isolate;
    }
    .hero-showcase:before{
      content:"";position:absolute;inset:-18px -10px auto auto;width:145px;height:145px;border-radius:50%;
      background:rgba(245,158,11,.16);z-index:-1;filter:blur(2px);
    }
    .showcase-image{
      min-height:360px;border-radius:24px;overflow:hidden;position:relative;
      background:
        linear-gradient(135deg, rgba(15,118,110,.86), rgba(15,118,110,.28)),
        url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
    }
    .showcase-image:after{content:"";position:absolute;inset:0;background:linear-gradient(to top, rgba(16,35,31,.78), transparent 58%)}
    .showcase-top{
      position:absolute;left:22px;right:22px;top:22px;z-index:2;
      display:flex;justify-content:space-between;align-items:center;gap:12px;
    }
    .pulse{
      display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;
      background:rgba(255,255,255,.90);color:var(--primary-dark);font-weight:800;font-size:13px;
    }
    .pulse i{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 5px rgba(34,197,94,.16)}
    .mini-card{
      position:absolute;left:22px;right:22px;bottom:22px;z-index:2;
      background:rgba(255,255,255,.94);border:1px solid rgba(255,255,255,.55);
      border-radius:22px;padding:18px;box-shadow:0 14px 36px rgba(15,23,42,.18);
    }
    .mini-card h2{font-size:21px;line-height:1.35;margin-bottom:8px}
    .mini-list{display:grid;gap:10px;margin-top:14px}
    .mini-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 12px;background:#f8fafc;border-radius:14px}
    .mini-item span{font-weight:750;font-size:14px}
    .mini-item em{font-style:normal;color:var(--muted);font-size:13px}
    .trust-strip{
      position:relative;z-index:2;margin-top:34px;
      display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
    }
    .trust-item{
      background:rgba(255,255,255,.78);border:1px solid rgba(229,231,235,.86);
      border-radius:18px;padding:18px;box-shadow:0 10px 26px rgba(15,23,42,.05);
    }
    .trust-item strong{display:block;font-size:17px;color:var(--ink);margin-bottom:4px}
    .trust-item span{font-size:14px;color:var(--muted)}

    .feature-wrap{
      display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:stretch;
    }
    .feature-large{
      border-radius:var(--radius-lg);overflow:hidden;min-height:430px;
      position:relative;background:#103a35;color:#fff;box-shadow:var(--shadow);
    }
    .feature-large img{
      width:100%;height:100%;object-fit:cover;position:absolute;inset:0;opacity:.42;transition:transform .5s ease;
    }
    .feature-large:hover img{transform:scale(1.035)}
    .feature-large-content{
      position:relative;z-index:2;padding:34px;min-height:430px;
      display:flex;flex-direction:column;justify-content:flex-end;
      background:linear-gradient(to top, rgba(16,35,31,.96), rgba(16,35,31,.18));
    }
    .feature-large h2{font-size:32px;line-height:1.28;margin:16px 0 12px}
    .feature-large p{color:rgba(255,255,255,.82);font-size:17px;max-width:560px}
    .feature-points{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
    .feature-points span{
      padding:8px 11px;border-radius:999px;background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.16);font-weight:750;font-size:13px;
    }
    .feature-side{display:grid;gap:18px}
    .info-card{
      background:var(--paper);border:1px solid var(--line);border-radius:24px;
      padding:24px;box-shadow:0 8px 24px rgba(15,23,42,.05);
      transition:var(--ease);position:relative;overflow:hidden;
    }
    .info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(15,118,110,.28)}
    .icon{
      width:46px;height:46px;border-radius:16px;display:grid;place-items:center;
      background:var(--primary-soft);color:var(--primary-dark);font-weight:900;font-size:20px;
      margin-bottom:16px;
    }
    .info-card h3{font-size:21px;line-height:1.35;margin-bottom:8px}
    .info-card p{color:var(--muted)}
    .card-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}

    .scene{
      background:linear-gradient(180deg, rgba(246,239,227,.72), rgba(250,250,247,0));
      border-top:1px solid rgba(229,231,235,.72);
      border-bottom:1px solid rgba(229,231,235,.72);
    }
    .process{
      display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:step;
      margin-top:30px;
    }
    .step{
      background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;
      position:relative;box-shadow:0 8px 24px rgba(15,23,42,.04);
      transition:var(--ease);
    }
    .step:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(15,118,110,.25)}
    .step-num{
      width:42px;height:42px;border-radius:15px;background:#10231f;color:#fff;
      display:grid;place-items:center;font-weight:900;margin-bottom:18px;
    }
    .step:nth-child(even) .step-num{background:var(--primary)}
    .step h3{font-size:20px;margin-bottom:8px}
    .step p{color:var(--muted);font-size:15px}

    .image-text{
      display:grid;grid-template-columns:.95fr 1.05fr;gap:34px;align-items:center;
    }
    .visual-card{
      border-radius:28px;background:#fff;border:1px solid var(--line);padding:12px;box-shadow:var(--shadow);
      overflow:hidden;
    }
    .visual-card img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;transition:transform .45s ease}
    .visual-card:hover img{transform:scale(1.03)}
    .check-list{display:grid;gap:14px;margin-top:22px}
    .check-list li{list-style:none;display:flex;gap:12px;align-items:flex-start;color:#475569}
    .check-list li:before{
      content:"✓";flex:0 0 24px;height:24px;border-radius:50%;
      display:grid;place-items:center;background:var(--primary-soft);color:var(--primary-dark);
      font-size:14px;font-weight:900;margin-top:2px;
    }

    .updates-grid{display:grid;grid-template-columns:.38fr .62fr;gap:28px;align-items:start}
    .updates-panel{
      position:sticky;top:98px;background:var(--paper);border:1px solid var(--line);
      border-radius:26px;padding:28px;box-shadow:var(--shadow);
    }
    .updates-panel .btn{margin-top:22px}
    .updates-list{display:grid;gap:14px}
    .post-card{
      display:grid;grid-template-columns:1fr auto;gap:18px;
      background:#fff;border:1px solid var(--line);border-radius:22px;
      padding:22px;transition:var(--ease);align-items:center;
    }
    .post-card:hover{border-color:rgba(15,118,110,.30);box-shadow:var(--shadow-hover);transform:translateY(-2px)}
    .post-meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:10px}
    .post-title{font-size:20px;font-weight:800;line-height:1.36;margin-bottom:8px}
    .post-title a{transition:var(--ease)}
    .post-card:hover .post-title a{color:var(--primary-dark)}
    .post-summary{color:var(--muted);font-size:15px;line-height:1.7}
    .post-arrow{
      width:44px;height:44px;border-radius:16px;background:var(--primary-soft);
      color:var(--primary-dark);display:grid;place-items:center;font-weight:900;
      transition:var(--ease);
    }
    .post-card:hover .post-arrow{transform:translateX(4px);background:var(--primary);color:#fff}
    .empty-state{
      background:#fff;border:1px dashed rgba(15,118,110,.35);border-radius:24px;
      padding:34px;text-align:center;color:var(--muted);
    }
    .empty-icon{
      width:58px;height:58px;margin:0 auto 14px;border-radius:20px;
      display:grid;place-items:center;background:var(--primary-soft);color:var(--primary-dark);
      font-size:26px;font-weight:900;
    }
    .empty-state strong{display:block;color:var(--ink);font-size:18px;margin-bottom:6px}

    .proof-grid{
      display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
    }
    .proof-card{
      background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;
      box-shadow:0 8px 22px rgba(15,23,42,.04);
      transition:var(--ease);
    }
    .proof-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(245,158,11,.34)}
    .proof-card strong{display:block;font-size:28px;color:var(--primary-dark);line-height:1;margin-bottom:12px}
    .proof-card h3{font-size:20px;margin-bottom:8px}
    .proof-card p{color:var(--muted);font-size:15px}

    .faq-grid{display:grid;grid-template-columns:.38fr .62fr;gap:32px;align-items:start}
    .faq-list{display:grid;gap:12px}
    .faq-item{
      background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;
      transition:var(--ease);
    }
    .faq-item:hover{border-color:rgba(15,118,110,.25);box-shadow:0 12px 28px rgba(15,23,42,.06)}
    .faq-question{
      width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;
      text-align:left;padding:20px 22px;font-weight:850;color:var(--ink);
    }
    .faq-question span:first-child{font-size:17px}
    .faq-plus{
      flex:0 0 30px;width:30px;height:30px;border-radius:50%;
      background:var(--primary-soft);color:var(--primary-dark);display:grid;place-items:center;
      transition:var(--ease);font-weight:900;
    }
    .faq-answer{
      max-height:0;overflow:hidden;transition:max-height .28s ease;
      color:var(--muted);padding:0 22px;
    }
    .faq-answer p{padding:0 0 20px;border-left:3px solid var(--primary);padding-left:14px}
    .faq-item.open{background:#fbfffe;border-color:rgba(15,118,110,.35)}
    .faq-item.open .faq-plus{transform:rotate(45deg);background:var(--primary);color:#fff}
    .faq-item.open .faq-answer{max-height:220px}

    .contact-cta{
      padding:0 0 86px;
    }
    .cta-box{
      border-radius:32px;padding:42px;
      background:
        linear-gradient(135deg, rgba(15,118,110,.96), rgba(11,95,88,.94)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      color:#fff;position:relative;overflow:hidden;box-shadow:0 24px 58px rgba(15,118,110,.24);
      display:grid;grid-template-columns:1fr auto;gap:26px;align-items:center;
    }
    .cta-box:after{
      content:"";position:absolute;right:-70px;top:-80px;width:220px;height:220px;border-radius:50%;
      background:rgba(245,158,11,.22);
    }
    .cta-box h2{font-size:34px;line-height:1.24;margin:10px 0 12px;position:relative;z-index:1}
    .cta-box p{color:rgba(255,255,255,.82);max-width:720px;position:relative;z-index:1}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1}
    .cta-box .btn-secondary{background:#fff;color:var(--primary-dark)}
    .cta-box .btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.22)}
    .cta-box .btn-ghost:hover{background:rgba(255,255,255,.18)}

    .site-footer{
      background:var(--footer);color:rgba(255,255,255,.78);
      padding:58px 0 24px;
    }
    .footer-grid{
      display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:34px;
      padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.10);
    }
    .footer-brand .brand{color:#fff;margin-bottom:16px}
    .footer-brand .brand-mark{box-shadow:none}
    .footer-brand p{max-width:430px;color:rgba(255,255,255,.68)}
    .footer-col h3{font-size:16px;color:#fff;margin-bottom:14px}
    .footer-links{display:grid;gap:10px}
    .footer-links a{color:rgba(255,255,255,.70);transition:var(--ease)}
    .footer-links a:hover{color:#f8c878;transform:translateX(3px)}
    .footer-bottom{
      display:flex;justify-content:space-between;gap:18px;align-items:center;
      padding-top:22px;color:rgba(255,255,255,.56);font-size:14px;
    }

    @media (max-width:1024px){
      .hero-grid,.feature-wrap,.updates-grid,.faq-grid,.image-text{grid-template-columns:1fr}
      .updates-panel{position:relative;top:auto}
      .trust-strip{grid-template-columns:repeat(2,1fr)}
      .process{grid-template-columns:repeat(2,1fr)}
      .proof-grid{grid-template-columns:1fr 1fr}
      .cta-box{grid-template-columns:1fr}
      h1{font-size:44px}
    }

    @media (max-width:820px){
      .nav-links,.nav-actions{display:none}
      .menu-toggle{display:inline-block}
      .mobile-panel{
        display:block;max-height:0;overflow:hidden;transition:max-height .28s ease;
        background:rgba(250,250,247,.98);border-top:1px solid var(--line);
      }
      .mobile-panel.open{max-height:380px}
      .mobile-inner{width:min(var(--container), calc(100% - 40px));margin:0 auto;padding:14px 0 18px;display:grid;gap:8px}
      .mobile-inner a{
        min-height:46px;display:flex;align-items:center;padding:10px 14px;border-radius:14px;
        color:#334155;font-weight:750;background:#fff;border:1px solid var(--line);
      }
      .mobile-inner a:hover,.mobile-inner a.active{color:var(--primary-dark);background:var(--primary-soft)}
      .mobile-inner .btn{width:100%;margin-top:4px}
      .section{padding:64px 0}
      .section-head{display:block}
      .section-title{font-size:29px}
      .hero{padding:56px 0 36px}
      h1{font-size:36px}
      .hero-lead{font-size:17px}
      .showcase-image{min-height:310px}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{flex-direction:column;align-items:flex-start}
    }

    @media (max-width:560px){
      .container{width:min(var(--container), calc(100% - 28px))}
      .nav-wrap{height:68px}
      .brand-mark{width:38px;height:38px;border-radius:13px}
      .brand-text{font-size:18px}
      h1{font-size:32px}
      .hero-actions .btn,.cta-actions .btn{width:100%}
      .trust-strip,.process,.proof-grid{grid-template-columns:1fr}
      .feature-large-content{padding:24px;min-height:380px}
      .feature-large h2,.cta-box h2{font-size:27px}
      .post-card{grid-template-columns:1fr}
      .post-arrow{justify-self:start}
      .cta-box{padding:30px 22px;border-radius:26px}
      .section-title{font-size:27px}
      .info-card,.updates-panel,.post-card{border-radius:20px;padding:20px}
    }

/* roulang page: article */
:root{
      --primary:#0f766e;
      --primary-dark:#0b5f58;
      --primary-soft:#e7f5f2;
      --accent:#f59e0b;
      --accent-soft:#fff4dc;
      --ink:#1f2933;
      --muted:#64748b;
      --weak:#94a3b8;
      --bg:#fafaf7;
      --paper:#ffffff;
      --warm:#f6efe3;
      --line:#e5e7eb;
      --line-strong:#d7dee8;
      --footer:#10231f;
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:28px;
      --shadow:0 14px 34px rgba(15,23,42,.08);
      --shadow-hover:0 18px 46px rgba(15,23,42,.13);
      --container:1200px;
      --ease:all .24s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",Arial,sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at 7% 6%, rgba(15,118,110,.08), transparent 34%),
        radial-gradient(circle at 92% 18%, rgba(245,158,11,.10), transparent 30%),
        var(--bg);
      line-height:1.75;
      font-size:16px;
      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;background:none}
    ::selection{background:rgba(15,118,110,.18);color:var(--primary-dark)}
    :focus-visible{outline:3px solid rgba(15,118,110,.22);outline-offset:3px}
    .container{width:min(var(--container), calc(100% - 40px));margin-inline:auto}
    .section{padding:86px 0}
    .section-tight{padding:60px 0}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;
      background:var(--primary-soft);color:var(--primary-dark);
      font-size:14px;font-weight:700;letter-spacing:.02em;
      border:1px solid rgba(15,118,110,.14);
    }
    .eyebrow:before{
      content:"";width:8px;height:8px;border-radius:50%;
      background:var(--accent);box-shadow:0 0 0 4px rgba(245,158,11,.14);
    }
    .muted{color:var(--muted)}
    .badge{
      display:inline-flex;align-items:center;gap:6px;
      padding:6px 10px;border-radius:999px;
      background:var(--accent-soft);color:#9a5c00;font-weight:700;font-size:13px;
      border:1px solid rgba(245,158,11,.20);
      white-space:nowrap;
    }
    .tag{
      display:inline-flex;align-items:center;
      padding:6px 10px;border:1px solid var(--line);
      border-radius:999px;background:#fff;color:var(--muted);
      font-size:13px;font-weight:650;
    }
    .site-header{
      position:sticky;top:0;z-index:50;
      background:rgba(250,250,247,.92);
      backdrop-filter:saturate(1.2) blur(10px);
      border-bottom:1px solid rgba(229,231,235,.88);
      box-shadow:0 8px 22px rgba(15,23,42,.04);
    }
    .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:inline-flex;align-items:center;gap:12px;font-weight:850;letter-spacing:-.02em}
    .brand-mark{
      width:42px;height:42px;border-radius:15px;
      display:grid;place-items:center;color:#fff;font-weight:900;
      background:linear-gradient(135deg,var(--primary),#129887);
      box-shadow:0 10px 24px rgba(15,118,110,.22);
      position:relative;
      flex:0 0 auto;
    }
    .brand-mark:after{
      content:"";position:absolute;right:7px;bottom:7px;width:9px;height:9px;border-radius:50%;
      background:var(--accent);border:2px solid rgba(255,255,255,.82);
    }
    .brand-text{font-size:20px;color:var(--ink)}
    .nav-links{display:flex;align-items:center;gap:6px}
    .nav-links a{
      padding:10px 13px;border-radius:999px;color:#334155;font-weight:700;font-size:15px;
      transition:var(--ease);position:relative;
    }
    .nav-links a:hover,.nav-links a.active{color:var(--primary-dark);background:var(--primary-soft)}
    .nav-actions{display:flex;align-items:center;gap:12px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:44px;padding:12px 18px;border-radius:999px;
      font-weight:800;border:1px solid transparent;
      transition:var(--ease);white-space:nowrap;
    }
    .btn-primary{background:var(--primary);color:#fff;box-shadow:0 12px 24px rgba(15,118,110,.20)}
    .btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 16px 34px rgba(15,118,110,.28);color:#fff}
    .btn-secondary{background:#fff;color:var(--primary-dark);border-color:rgba(15,118,110,.18)}
    .btn-secondary:hover{border-color:rgba(15,118,110,.38);transform:translateY(-2px);box-shadow:var(--shadow);color:var(--primary-dark)}
    .btn-ghost{color:var(--primary-dark);background:rgba(15,118,110,.08)}
    .btn-ghost:hover{background:rgba(15,118,110,.14);transform:translateY(-1px);color:var(--primary-dark)}
    .menu-toggle{
      display:none;width:46px;height:46px;border-radius:14px;
      border:1px solid var(--line);background:#fff;color:var(--ink);
    }
    .menu-toggle span{display:block;width:20px;height:2px;background:var(--ink);margin:5px auto;border-radius:99px;transition:var(--ease)}
    .menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    .menu-toggle.is-open span:nth-child(2){opacity:0}
    .menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
    .mobile-panel{
      display:none;
      padding:0 0 16px;
      border-top:1px solid rgba(229,231,235,.75);
    }
    .mobile-menu{
      margin-top:12px;background:#fff;border:1px solid var(--line);border-radius:22px;
      padding:10px;box-shadow:var(--shadow);
    }
    .mobile-menu a{
      display:flex;align-items:center;justify-content:space-between;
      min-height:46px;padding:10px 13px;border-radius:14px;
      color:#334155;font-weight:750;
    }
    .mobile-menu a:hover,.mobile-menu a.active{background:var(--primary-soft);color:var(--primary-dark)}
    .mobile-menu .mobile-cta{margin-top:8px;justify-content:center;background:var(--primary);color:#fff}
    .article-hero{
      position:relative;
      padding:54px 0 56px;
      overflow:hidden;
      background:
        linear-gradient(90deg, rgba(250,250,247,.95), rgba(250,250,247,.78)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      border-bottom:1px solid rgba(229,231,235,.78);
    }
    .article-hero:before{
      content:"";position:absolute;inset:0;
      background-image:
        linear-gradient(rgba(15,118,110,.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15,118,110,.055) 1px, transparent 1px);
      background-size:34px 34px;
      mask-image:linear-gradient(to bottom, rgba(0,0,0,.74), transparent 86%);
      pointer-events:none;
    }
    .article-hero-inner{position:relative;z-index:1;max-width:930px}
    .breadcrumb{
      display:flex;align-items:center;flex-wrap:wrap;gap:9px;
      margin:0 0 22px;padding:0;color:var(--muted);font-size:14px;font-weight:650;
    }
    .breadcrumb a{color:var(--primary-dark);transition:var(--ease)}
    .breadcrumb a:hover{color:var(--accent)}
    .breadcrumb .sep{color:var(--weak)}
    .article-title{
      margin:16px 0 18px;
      font-size:clamp(32px,4.3vw,52px);
      line-height:1.18;
      letter-spacing:-.04em;
      font-weight:850;
      color:var(--ink);
    }
    .article-summary{
      max-width:820px;
      color:#475569;
      font-size:18px;
      line-height:1.85;
      margin:0;
    }
    .article-meta{
      display:flex;align-items:center;flex-wrap:wrap;gap:10px;
      margin-top:24px;
    }
    .meta-item{
      display:inline-flex;align-items:center;gap:7px;
      padding:8px 12px;border-radius:999px;
      background:rgba(255,255,255,.78);
      border:1px solid rgba(229,231,235,.92);
      color:#475569;font-weight:700;font-size:14px;
      box-shadow:0 8px 22px rgba(15,23,42,.04);
    }
    .meta-dot{
      width:7px;height:7px;border-radius:50%;background:var(--primary);
      box-shadow:0 0 0 4px rgba(15,118,110,.12);
    }
    .reading-shell{padding:70px 0 76px}
    .reading-grid{
      display:grid;
      grid-template-columns:minmax(0, 820px) minmax(260px, 1fr);
      gap:34px;
      align-items:start;
    }
    .article-card{
      background:rgba(255,255,255,.94);
      border:1px solid rgba(229,231,235,.94);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .article-cover{
      position:relative;
      aspect-ratio:16/7;
      overflow:hidden;
      background:linear-gradient(135deg,var(--primary-soft),var(--warm));
      border-bottom:1px solid var(--line);
    }
    .article-cover img{
      width:100%;height:100%;object-fit:cover;
      transform:scale(1.001);
      transition:transform .45s ease;
    }
    .article-card:hover .article-cover img{transform:scale(1.025)}
    .article-cover:after{
      content:"";position:absolute;inset:0;
      background:linear-gradient(180deg, transparent 35%, rgba(16,35,31,.46));
      pointer-events:none;
    }
    .cover-caption{
      position:absolute;left:22px;bottom:18px;z-index:1;
      color:#fff;font-weight:800;
      text-shadow:0 6px 16px rgba(0,0,0,.25);
      display:flex;align-items:center;gap:10px;flex-wrap:wrap;
    }
    .article-content{
      padding:38px 42px 44px;
      font-size:17px;
      color:#263341;
      line-height:1.88;
    }
    .article-content > *:first-child{margin-top:0}
    .article-content > *:last-child{margin-bottom:0}
    .article-content p{margin:0 0 1.18em}
    .article-content h2{
      margin:2.1em 0 .75em;
      font-size:29px;
      line-height:1.28;
      font-weight:850;
      letter-spacing:-.025em;
      color:var(--ink);
      position:relative;
      padding-left:16px;
    }
    .article-content h2:before{
      content:"";position:absolute;left:0;top:.25em;width:5px;height:1.05em;
      border-radius:99px;background:var(--primary);
      box-shadow:0 0 0 5px rgba(15,118,110,.09);
    }
    .article-content h3{
      margin:1.8em 0 .65em;
      font-size:23px;
      line-height:1.35;
      font-weight:800;
      color:#24313f;
    }
    .article-content h4{font-size:19px;margin:1.5em 0 .55em;font-weight:800}
    .article-content a{
      color:var(--primary-dark);
      font-weight:750;
      border-bottom:1px solid rgba(15,118,110,.25);
      transition:var(--ease);
    }
    .article-content a:hover{color:var(--accent);border-bottom-color:rgba(245,158,11,.45)}
    .article-content ul,.article-content ol{padding-left:1.25em;margin:0 0 1.35em}
    .article-content li{margin:.45em 0;padding-left:.15em}
    .article-content blockquote{
      margin:1.6em 0;
      padding:20px 22px;
      border-left:5px solid var(--primary);
      border-radius:0 var(--radius) var(--radius) 0;
      background:linear-gradient(90deg, rgba(231,245,242,.86), rgba(255,255,255,.82));
      color:#334155;
      box-shadow:inset 0 0 0 1px rgba(15,118,110,.08);
    }
    .article-content blockquote p:last-child{margin-bottom:0}
    .article-content img{
      width:auto;
      max-width:100%;
      height:auto;
      border-radius:18px;
      margin:1.7em auto;
      box-shadow:0 14px 34px rgba(15,23,42,.10);
      border:1px solid rgba(229,231,235,.9);
    }
    .article-content figure{margin:1.8em 0}
    .article-content figcaption{
      margin-top:10px;
      text-align:center;
      color:var(--muted);
      font-size:14px;
    }
    .article-content table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      margin:1.6em 0;
      overflow:hidden;
      border:1px solid var(--line);
      border-radius:16px;
      background:#fff;
      box-shadow:0 10px 24px rgba(15,23,42,.05);
    }
    .article-content th,.article-content td{
      padding:13px 15px;
      border-bottom:1px solid var(--line);
      vertical-align:top;
    }
    .article-content tr:last-child td{border-bottom:0}
    .article-content th{
      background:var(--primary-soft);
      color:var(--primary-dark);
      font-weight:850;
    }
    .article-content code{
      padding:2px 6px;border-radius:8px;
      background:var(--primary-soft);
      color:var(--primary-dark);
      font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
      font-size:.92em;
    }
    .article-content pre{
      overflow:auto;
      padding:18px;
      border-radius:18px;
      background:#10231f;
      color:#e7f5f2;
      box-shadow:var(--shadow);
    }
    .not-found{
      padding:48px 34px;
      text-align:center;
      background:#fff;
      border:1px dashed rgba(15,118,110,.25);
      border-radius:var(--radius-lg);
    }
    .not-found-icon{
      width:58px;height:58px;margin:0 auto 16px;
      border-radius:20px;
      display:grid;place-items:center;
      background:var(--primary-soft);
      color:var(--primary-dark);
      font-size:26px;
      font-weight:900;
    }
    .not-found h2{margin:0 0 10px;font-size:28px;font-weight:850}
    .not-found p{margin:0 auto 22px;color:var(--muted);max-width:520px}
    .side-stack{
      position:sticky;
      top:98px;
      display:grid;
      gap:18px;
    }
    .side-card{
      background:rgba(255,255,255,.94);
      border:1px solid rgba(229,231,235,.94);
      border-radius:var(--radius);
      box-shadow:0 12px 30px rgba(15,23,42,.06);
      padding:22px;
      transition:var(--ease);
    }
    .side-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:rgba(15,118,110,.22)}
    .side-card h2,.side-card h3{
      margin:0 0 12px;
      font-size:20px;
      line-height:1.35;
      font-weight:850;
      color:var(--ink);
    }
    .side-card p{margin:0;color:var(--muted);font-size:15px;line-height:1.7}
    .toc-list{display:grid;gap:9px;margin-top:14px}
    .toc-list a{
      display:flex;align-items:center;gap:9px;
      padding:9px 10px;
      border-radius:12px;
      color:#475569;
      font-size:14px;
      font-weight:720;
      transition:var(--ease);
    }
    .toc-list a:before{
      content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);
      opacity:.75;
    }
    .toc-list a:hover{background:var(--primary-soft);color:var(--primary-dark);transform:translateX(2px)}
    .service-mini{
      overflow:hidden;
      padding:0;
    }
    .service-mini img{
      width:100%;
      aspect-ratio:4/3;
      object-fit:cover;
      border-bottom:1px solid var(--line);
    }
    .service-mini-body{padding:20px}
    .side-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
    .article-bottom{
      margin-top:24px;
      display:grid;
      gap:18px;
    }
    .share-card,.return-card{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius);
      padding:22px;
      box-shadow:0 10px 24px rgba(15,23,42,.05);
    }
    .share-card{
      display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
    }
    .share-card strong{font-size:18px}
    .share-card span{color:var(--muted);font-size:14px}
    .article-tags{display:flex;flex-wrap:wrap;gap:8px}
    .return-card{
      display:grid;
      grid-template-columns:1fr auto;
      gap:20px;
      align-items:center;
      background:
        linear-gradient(135deg, rgba(231,245,242,.92), rgba(255,244,220,.7)),
        #fff;
    }
    .return-card h2{margin:0 0 8px;font-size:24px;font-weight:850}
    .return-card p{margin:0;color:var(--muted)}
    .more-section{padding:0 0 82px}
    .more-grid{
      display:grid;
      grid-template-columns:1fr 1fr 1fr;
      gap:18px;
    }
    .more-card{
      padding:24px;
      border-radius:var(--radius);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:0 10px 24px rgba(15,23,42,.05);
      transition:var(--ease);
      min-height:176px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .more-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(15,118,110,.25)}
    .more-card h3{margin:12px 0 8px;font-size:20px;line-height:1.35;font-weight:850}
    .more-card p{margin:0;color:var(--muted);font-size:15px}
    .more-link{
      margin-top:18px;
      color:var(--primary-dark);
      font-weight:850;
      display:inline-flex;
      align-items:center;
      gap:6px;
    }
    .more-link span{transition:var(--ease)}
    .more-card:hover .more-link span{transform:translateX(4px)}
    .faq-strip{
      padding:70px 0;
      background:linear-gradient(180deg, rgba(246,239,227,.72), rgba(250,250,247,0));
      border-top:1px solid rgba(229,231,235,.72);
    }
    .faq-layout{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:34px;
      align-items:start;
    }
    .section-title{
      font-size:34px;
      line-height:1.24;
      font-weight:850;
      letter-spacing:-.03em;
      color:var(--ink);
      margin:14px 0 0;
    }
    .section-desc{color:var(--muted);max-width:620px;margin-top:12px;font-size:17px}
    .faq-list{display:grid;gap:12px}
    .faq-item{
      background:#fff;
      border:1px solid var(--line);
      border-radius:18px;
      overflow:hidden;
      box-shadow:0 10px 22px rgba(15,23,42,.04);
    }
    .faq-question{
      width:100%;
      min-height:58px;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      text-align:left;
      color:var(--ink);
      font-weight:850;
    }
    .faq-question .plus{
      width:28px;height:28px;border-radius:10px;
      display:grid;place-items:center;
      background:var(--primary-soft);
      color:var(--primary-dark);
      flex:0 0 auto;
      transition:var(--ease);
      font-size:20px;
      line-height:1;
    }
    .faq-answer{
      display:none;
      padding:0 20px 20px;
      color:var(--muted);
      border-left:4px solid var(--primary);
      margin-left:20px;
    }
    .faq-item.is-open{border-color:rgba(15,118,110,.24);background:linear-gradient(180deg,#fff,rgba(231,245,242,.45))}
    .faq-item.is-open .faq-answer{display:block}
    .faq-item.is-open .plus{transform:rotate(45deg);background:var(--primary);color:#fff}
    .cta-band{
      padding:74px 0;
    }
    .cta-box{
      position:relative;
      overflow:hidden;
      border-radius:32px;
      padding:42px;
      color:#fff;
      background:
        linear-gradient(135deg, rgba(15,118,110,.96), rgba(11,95,88,.98)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      box-shadow:0 22px 56px rgba(15,118,110,.24);
    }
    .cta-box:before{
      content:"";position:absolute;right:-70px;top:-80px;width:250px;height:250px;border-radius:50%;
      background:rgba(245,158,11,.18);
    }
    .cta-box:after{
      content:"";position:absolute;left:34px;bottom:-76px;width:170px;height:170px;border-radius:50%;
      background:rgba(255,255,255,.08);
    }
    .cta-content{
      position:relative;z-index:1;
      display:flex;align-items:center;justify-content:space-between;gap:28px;
    }
    .cta-content h2{font-size:32px;line-height:1.25;margin:10px 0 10px;font-weight:850;letter-spacing:-.03em}
    .cta-content p{margin:0;color:rgba(255,255,255,.82);max-width:680px;font-size:17px}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}
    .cta-actions .btn-secondary{background:#fff;color:var(--primary-dark)}
    .cta-actions .btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.20)}
    .cta-actions .btn-ghost:hover{background:rgba(255,255,255,.20);color:#fff}
    .site-footer{
      background:var(--footer);
      color:rgba(255,255,255,.78);
      padding:58px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr .8fr .9fr;
      gap:36px;
      align-items:start;
    }
    .footer-brand .brand-text{color:#fff}
    .footer-brand p{margin:18px 0 0;max-width:430px;color:rgba(255,255,255,.68)}
    .footer-col h3{
      margin:0 0 14px;
      color:#fff;
      font-size:18px;
      font-weight:850;
    }
    .footer-links{display:grid;gap:9px}
    .footer-links a{
      color:rgba(255,255,255,.68);
      transition:var(--ease);
      width:max-content;
      max-width:100%;
      overflow-wrap:anywhere;
    }
    .footer-links a:hover{color:#f8c26a;transform:translateX(2px)}
    .footer-bottom{
      margin-top:38px;
      padding-top:22px;
      border-top:1px solid rgba(255,255,255,.12);
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      color:rgba(255,255,255,.56);
      font-size:14px;
    }
    @media (max-width:1100px){
      .nav-links{display:none}
      .menu-toggle{display:inline-block}
      .mobile-panel.is-open{display:block}
      .reading-grid{grid-template-columns:1fr}
      .side-stack{position:static;grid-template-columns:1fr 1fr}
      .service-mini{grid-column:span 2}
      .faq-layout{grid-template-columns:1fr}
      .cta-content{align-items:flex-start;flex-direction:column}
      .cta-actions{justify-content:flex-start}
    }
    @media (max-width:820px){
      .container{width:min(var(--container), calc(100% - 28px))}
      .section{padding:62px 0}
      .article-hero{padding:40px 0 42px}
      .article-summary{font-size:16px}
      .article-content{padding:30px 24px;font-size:16px}
      .article-cover{aspect-ratio:16/9}
      .side-stack{grid-template-columns:1fr}
      .service-mini{grid-column:auto}
      .more-grid{grid-template-columns:1fr}
      .return-card{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{flex-direction:column}
      .cta-box{padding:30px 24px;border-radius:26px}
      .cta-content h2,.section-title{font-size:28px}
      .nav-actions .btn-primary{display:none}
    }
    @media (max-width:520px){
      body{font-size:15px}
      .nav-wrap{height:68px}
      .brand-mark{width:38px;height:38px;border-radius:14px}
      .brand-text{font-size:18px}
      .article-title{font-size:30px}
      .breadcrumb{font-size:13px}
      .article-meta{gap:8px}
      .meta-item{width:100%;justify-content:flex-start}
      .article-content{padding:25px 18px}
      .article-content h2{font-size:24px}
      .article-content h3{font-size:20px}
      .share-card{align-items:flex-start;flex-direction:column}
      .btn{width:100%}
      .cta-actions,.article-tags{width:100%}
      .cover-caption{left:16px;right:16px;bottom:14px}
    }

/* 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}