/* roulang page: index */
:root{
      --bg:#0b1020;
      --bg-soft:#11182c;
      --surface:#ffffff;
      --surface-2:#f6f8fc;
      --surface-dark:#151d33;
      --primary:#d9465f;
      --primary-2:#ff7a59;
      --accent:#7c5cff;
      --safe:#17a56b;
      --warning:#f59e0b;
      --text:#172033;
      --text-soft:#59657a;
      --text-light:#e8edf7;
      --muted:#8b96aa;
      --border:#e5e9f2;
      --border-dark:rgba(255,255,255,.12);
      --shadow:0 18px 50px rgba(17,24,44,.12);
      --shadow-hover:0 24px 70px rgba(17,24,44,.18);
      --radius-xs:10px;
      --radius-sm:14px;
      --radius-md:22px;
      --radius-lg:34px;
      --container:1180px;
      --header-h:78px;
      --transition:all .24s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      line-height:1.7;
      color:var(--text);
      background:linear-gradient(180deg,#fbfcff 0%,#f5f7fb 42%,#ffffff 100%);
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer;border:0}
    ::selection{background:rgba(217,70,95,.18);color:#111827}
    :focus-visible{
      outline:3px solid rgba(124,92,255,.35);
      outline-offset:3px;
      border-radius:10px;
    }

    .container{
      width:min(var(--container), calc(100% - 40px));
      margin:0 auto;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      height:var(--header-h);
      background:rgba(255,255,255,.86);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(229,233,242,.9);
    }
    .nav-wrap{
      height:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:900;
      letter-spacing:-.02em;
      color:#111827;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 12px 28px rgba(217,70,95,.28);
      flex:0 0 auto;
    }
    .brand-mark span{font-weight:900;font-size:18px}
    .brand-name{
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:360px;
      font-size:18px;
    }
    .nav{
      display:flex;
      align-items:center;
      gap:8px;
    }
    .nav a{
      padding:10px 15px;
      border-radius:999px;
      color:#344054;
      font-weight:700;
      font-size:15px;
      transition:var(--transition);
    }
    .nav a:hover{
      background:#f0f3fa;
      color:var(--primary);
      transform:translateY(-1px);
    }
    .nav a.active{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 10px 24px rgba(217,70,95,.24);
    }
    .header-actions{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .mini-note{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 12px;
      border:1px solid var(--border);
      border-radius:999px;
      color:#667085;
      background:#fff;
      font-size:13px;
      font-weight:700;
    }
    .mini-note::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--safe);
      box-shadow:0 0 0 5px rgba(23,165,107,.12);
    }
    .nav-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      background:#f2f4f8;
      color:#111827;
      transition:var(--transition);
    }
    .nav-toggle:hover{background:#e9edf5}

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      padding:13px 18px;
      border-radius:999px;
      font-weight:800;
      line-height:1.2;
      transition:var(--transition);
      white-space:nowrap;
      user-select:none;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 16px 36px rgba(217,70,95,.28);
    }
    .btn-primary:hover{
      transform:translateY(-2px);
      box-shadow:0 20px 48px rgba(217,70,95,.35);
    }
    .btn-secondary{
      color:#111827;
      background:#fff;
      border:1px solid rgba(255,255,255,.72);
      box-shadow:0 14px 34px rgba(10,18,32,.16);
    }
    .btn-secondary:hover{
      transform:translateY(-2px);
      background:#f7f9fd;
    }
    .btn-line{
      color:var(--primary);
      background:rgba(217,70,95,.08);
      border:1px solid rgba(217,70,95,.16);
    }
    .btn-line:hover{
      background:rgba(217,70,95,.13);
      transform:translateY(-1px);
    }

    .hero{
      position:relative;
      min-height:720px;
      display:flex;
      align-items:center;
      overflow:hidden;
      color:#fff;
      background:
        linear-gradient(120deg,rgba(7,12,28,.92) 0%,rgba(11,16,32,.76) 48%,rgba(217,70,95,.38) 100%),
        url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
    }
    .hero::after{
      content:"";
      position:absolute;
      inset:auto -12% -38% -12%;
      height:330px;
      background:radial-gradient(circle at center,rgba(255,122,89,.34),rgba(124,92,255,.12) 46%,transparent 70%);
      filter:blur(24px);
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      z-index:2;
      display:grid;
      grid-template-columns:1.12fr .88fr;
      gap:52px;
      align-items:center;
      padding:86px 0 78px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:9px 13px;
      border:1px solid rgba(255,255,255,.18);
      border-radius:999px;
      background:rgba(255,255,255,.10);
      backdrop-filter:blur(12px);
      color:#f6f8ff;
      font-size:14px;
      font-weight:800;
    }
    .eyebrow .dot{
      width:9px;
      height:9px;
      border-radius:50%;
      background:var(--warning);
      box-shadow:0 0 0 6px rgba(245,158,11,.18);
    }
    .hero h1{
      margin:24px 0 18px;
      font-size:clamp(40px,6vw,74px);
      line-height:1.04;
      letter-spacing:-.06em;
      max-width:900px;
    }
    .hero-lead{
      max-width:720px;
      margin:0;
      font-size:19px;
      line-height:1.9;
      color:rgba(255,255,255,.84);
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-top:34px;
    }
    .hero-points{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:30px;
      padding:0;
      list-style:none;
    }
    .hero-points li{
      display: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,.12);
      color:rgba(255,255,255,.88);
      font-size:14px;
      font-weight:700;
    }
    .hero-points li::before{
      content:"✓";
      display:grid;
      place-items:center;
      width:18px;
      height:18px;
      border-radius:50%;
      background:rgba(23,165,107,.9);
      color:#fff;
      font-size:12px;
    }
    .hero-panel{
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.18);
      border-radius:var(--radius-lg);
      padding:18px;
      box-shadow:0 30px 80px rgba(0,0,0,.25);
      backdrop-filter:blur(18px);
    }
    .panel-inner{
      border-radius:28px;
      overflow:hidden;
      background:#fff;
      color:var(--text);
    }
    .panel-cover{
      position:relative;
      min-height:240px;
      background:
        linear-gradient(180deg,rgba(11,16,32,.12),rgba(11,16,32,.82)),
        url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
      display:flex;
      align-items:flex-end;
      padding:22px;
    }
    .risk-badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 11px;
      border-radius:999px;
      color:#fff;
      background:rgba(11,16,32,.62);
      border:1px solid rgba(255,255,255,.18);
      font-size:13px;
      font-weight:800;
    }
    .panel-body{padding:24px}
    .check-list{
      display:grid;
      gap:14px;
      padding:0;
      margin:0;
      list-style:none;
    }
    .check-list li{
      display:grid;
      grid-template-columns:32px 1fr;
      gap:12px;
      align-items:start;
      padding:14px;
      border:1px solid var(--border);
      border-radius:18px;
      background:#fbfcff;
    }
    .check-icon{
      width:32px;
      height:32px;
      border-radius:12px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--safe),#4ade80);
      font-weight:900;
    }
    .check-list strong{display:block;margin-bottom:2px}
    .check-list span{color:var(--text-soft);font-size:14px}

    .section{
      padding:92px 0;
      position:relative;
    }
    .section.tight{padding:66px 0}
    .section.dark{
      background:var(--bg);
      color:var(--text-light);
      overflow:hidden;
    }
    .section.dark::before{
      content:"";
      position:absolute;
      inset:-10% auto auto -10%;
      width:420px;
      height:420px;
      border-radius:50%;
      background:rgba(124,92,255,.22);
      filter:blur(60px);
    }
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:34px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin-bottom:12px;
      color:var(--primary);
      font-weight:900;
      letter-spacing:.03em;
      font-size:14px;
    }
    .section-kicker::before{
      content:"";
      width:22px;
      height:3px;
      border-radius:99px;
      background:linear-gradient(90deg,var(--primary),var(--primary-2));
    }
    .section-title{
      margin:0;
      font-size:clamp(28px,3.4vw,46px);
      line-height:1.18;
      letter-spacing:-.04em;
    }
    .section-desc{
      margin:12px 0 0;
      max-width:680px;
      color:var(--text-soft);
      font-size:17px;
    }
    .dark .section-desc{color:rgba(232,237,247,.72)}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 10px;
      border-radius:999px;
      background:rgba(217,70,95,.09);
      color:var(--primary);
      border:1px solid rgba(217,70,95,.14);
      font-size:13px;
      font-weight:800;
    }
    .badge.safe{
      background:rgba(23,165,107,.10);
      color:#0f8a5a;
      border-color:rgba(23,165,107,.16);
    }
    .badge.warn{
      background:rgba(245,158,11,.12);
      color:#b76a00;
      border-color:rgba(245,158,11,.20);
    }

    .notice-card{
      position:relative;
      display:grid;
      grid-template-columns:1fr .72fr;
      gap:34px;
      align-items:center;
      padding:34px;
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid var(--border);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .notice-card::before{
      content:"";
      position:absolute;
      inset:0 auto 0 0;
      width:6px;
      background:linear-gradient(180deg,var(--primary),var(--accent));
    }
    .notice-card h2{
      margin:8px 0 12px;
      font-size:32px;
      letter-spacing:-.03em;
      line-height:1.25;
    }
    .notice-card p{
      margin:0;
      color:var(--text-soft);
      font-size:16px;
    }
    .notice-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:22px;
    }
    .notice-list{
      display:grid;
      gap:12px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .notice-list li{
      padding:16px 16px 16px 44px;
      border-radius:18px;
      background:var(--surface-2);
      border:1px solid var(--border);
      position:relative;
      font-weight:700;
      color:#263247;
    }
    .notice-list li::before{
      content:"!";
      position:absolute;
      left:15px;
      top:16px;
      width:20px;
      height:20px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(245,158,11,.16);
      color:#b76a00;
      font-size:13px;
      font-weight:900;
    }

    .feature-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:20px;
    }
    .feature-card{
      position:relative;
      min-height:260px;
      padding:26px;
      border-radius:var(--radius-md);
      background:#fff;
      border:1px solid var(--border);
      box-shadow:0 10px 34px rgba(16,24,40,.06);
      transition:var(--transition);
      overflow:hidden;
    }
    .feature-card:hover{
      transform:translateY(-6px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(217,70,95,.25);
    }
    .feature-card::after{
      content:"";
      position:absolute;
      right:-36px;
      bottom:-36px;
      width:120px;
      height:120px;
      border-radius:42px;
      transform:rotate(18deg);
      background:linear-gradient(135deg,rgba(217,70,95,.12),rgba(124,92,255,.10));
    }
    .feature-icon{
      width:54px;
      height:54px;
      border-radius:18px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      color:#fff;
      font-size:24px;
      box-shadow:0 16px 28px rgba(124,92,255,.18);
    }
    .feature-card h3{
      margin:22px 0 10px;
      font-size:21px;
      letter-spacing:-.02em;
    }
    .feature-card p{
      margin:0;
      color:var(--text-soft);
    }

    .editorial{
      display:grid;
      grid-template-columns:.95fr 1.05fr;
      gap:42px;
      align-items:center;
    }
    .image-stack{
      position:relative;
      min-height:480px;
    }
    .image-main,
    .image-float{
      position:absolute;
      border-radius:32px;
      overflow:hidden;
      box-shadow:var(--shadow);
      border:8px solid #fff;
      background:#ddd;
    }
    .image-main{
      inset:0 70px 56px 0;
    }
    .image-float{
      width:46%;
      right:0;
      bottom:0;
    }
    .image-main img,.image-float img{
      width:100%;
      height:100%;
      object-fit:cover;
    }
    .editorial-copy h2{
      margin:0 0 16px;
      font-size:clamp(28px,3.4vw,44px);
      line-height:1.18;
      letter-spacing:-.04em;
    }
    .editorial-copy p{
      margin:0 0 20px;
      color:var(--text-soft);
      font-size:17px;
    }
    .rule-box{
      display:grid;
      gap:12px;
      margin-top:24px;
    }
    .rule-row{
      display:flex;
      gap:14px;
      align-items:flex-start;
      padding:16px;
      border-radius:18px;
      background:#fff;
      border:1px solid var(--border);
      transition:var(--transition);
    }
    .rule-row:hover{
      transform:translateX(3px);
      box-shadow:0 12px 28px rgba(16,24,40,.08);
    }
    .rule-num{
      width:34px;
      height:34px;
      border-radius:12px;
      display:grid;
      place-items:center;
      flex:0 0 auto;
      color:#fff;
      font-weight:900;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
    }
    .rule-row strong{display:block;margin-bottom:3px}
    .rule-row span{color:var(--text-soft);font-size:14px}

    .category-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .category-card{
      padding:22px;
      border-radius:var(--radius-md);
      background:rgba(255,255,255,.06);
      border:1px solid var(--border-dark);
      transition:var(--transition);
      position:relative;
      z-index:1;
    }
    .category-card:hover{
      background:rgba(255,255,255,.10);
      transform:translateY(-5px);
    }
    .category-card h3{
      margin:14px 0 8px;
      color:#fff;
      font-size:20px;
    }
    .category-card p{
      margin:0;
      color:rgba(232,237,247,.70);
      font-size:15px;
    }
    .category-symbol{
      width:48px;
      height:48px;
      border-radius:17px;
      display:grid;
      place-items:center;
      background:rgba(255,255,255,.12);
      color:#fff;
      font-weight:900;
      border:1px solid rgba(255,255,255,.12);
    }

    .content-toolbar{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:18px;
      margin-bottom:22px;
    }
    .search-box{
      display:flex;
      align-items:center;
      gap:10px;
      width:min(420px,100%);
      padding:10px 12px;
      border-radius:999px;
      border:1px solid var(--border);
      background:#fff;
      box-shadow:0 8px 22px rgba(16,24,40,.05);
    }
    .search-box input{
      width:100%;
      border:0;
      outline:0;
      color:var(--text);
      background:transparent;
    }
    .search-box span{color:var(--muted);font-weight:900}
    .news-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:18px;
    }
    .news-card{
      display:grid;
      gap:12px;
      padding:22px;
      border-radius:var(--radius-md);
      background:#fff;
      border:1px solid var(--border);
      box-shadow:0 10px 30px rgba(16,24,40,.05);
      transition:var(--transition);
    }
    .news-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(124,92,255,.22);
    }
    .news-meta{
      display:flex;
      flex-wrap:wrap;
      gap:9px;
      align-items:center;
      color:var(--muted);
      font-size:13px;
      font-weight:800;
    }
    .news-card h3{
      margin:0;
      font-size:20px;
      line-height:1.35;
      letter-spacing:-.02em;
      color:#151d33;
    }
    .news-card p{
      margin:0;
      color:var(--text-soft);
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .empty-state{
      grid-column:1/-1;
      padding:34px;
      border:1px dashed #c9d2e3;
      border-radius:var(--radius-md);
      background:#fff;
      color:var(--muted);
      text-align:center;
      font-weight:800;
    }

    .proof-grid{
      display:grid;
      grid-template-columns:1fr 1fr 1fr;
      gap:18px;
      margin-top:28px;
    }
    .proof-card{
      padding:26px;
      border-radius:var(--radius-md);
      background:#fff;
      border:1px solid var(--border);
      box-shadow:0 10px 32px rgba(16,24,40,.05);
    }
    .proof-value{
      display:block;
      color:var(--primary);
      font-size:38px;
      line-height:1;
      font-weight:900;
      letter-spacing:-.04em;
      margin-bottom:12px;
    }
    .proof-card strong{display:block;margin-bottom:6px;font-size:18px}
    .proof-card p{margin:0;color:var(--text-soft)}

    .faq-wrap{
      display:grid;
      grid-template-columns:.78fr 1.22fr;
      gap:34px;
      align-items:start;
    }
    .faq-aside{
      position:sticky;
      top:calc(var(--header-h) + 22px);
      padding:28px;
      border-radius:var(--radius-lg);
      background:
        linear-gradient(135deg,rgba(217,70,95,.92),rgba(124,92,255,.88)),
        url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
      color:#fff;
      box-shadow:var(--shadow);
    }
    .faq-aside h2{
      margin:12px 0 10px;
      font-size:32px;
      line-height:1.18;
      letter-spacing:-.03em;
    }
    .faq-aside p{margin:0;color:rgba(255,255,255,.82)}
    .faq-list{
      display:grid;
      gap:14px;
    }
    .faq-item{
      border-radius:var(--radius-md);
      border:1px solid var(--border);
      background:#fff;
      box-shadow:0 8px 24px rgba(16,24,40,.04);
      overflow:hidden;
    }
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:20px 56px 20px 22px;
      font-weight:900;
      position:relative;
      color:#172033;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{
      content:"+";
      position:absolute;
      right:20px;
      top:18px;
      width:30px;
      height:30px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:#f0f3fa;
      color:var(--primary);
      font-weight:900;
      transition:var(--transition);
    }
    .faq-item[open] summary::after{
      content:"−";
      background:rgba(217,70,95,.10);
      transform:rotate(180deg);
    }
    .faq-item p{
      margin:0;
      padding:0 22px 22px;
      color:var(--text-soft);
    }

    .cta{
      padding:0 0 92px;
    }
    .cta-card{
      position:relative;
      overflow:hidden;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:34px;
      align-items:center;
      padding:42px;
      border-radius:40px;
      color:#fff;
      background:
        linear-gradient(120deg,rgba(11,16,32,.92),rgba(217,70,95,.78)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      box-shadow:0 28px 80px rgba(11,16,32,.22);
    }
    .cta-card::after{
      content:"";
      position:absolute;
      right:-80px;
      top:-80px;
      width:260px;
      height:260px;
      border-radius:50%;
      background:rgba(255,255,255,.13);
    }
    .cta-card h2{
      margin:12px 0 12px;
      font-size:clamp(28px,3.4vw,46px);
      line-height:1.15;
      letter-spacing:-.04em;
    }
    .cta-card p{
      margin:0;
      color:rgba(255,255,255,.82);
      font-size:17px;
    }
    .cta-form{
      position:relative;
      z-index:1;
      padding:20px;
      border-radius:28px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.16);
      backdrop-filter:blur(12px);
    }
    .form-row{
      display:grid;
      gap:12px;
      margin-bottom:12px;
    }
    .form-row input,
    .form-row textarea{
      width:100%;
      border:1px solid rgba(255,255,255,.16);
      border-radius:18px;
      padding:14px 15px;
      color:#fff;
      outline:0;
      background:rgba(255,255,255,.12);
      transition:var(--transition);
    }
    .form-row textarea{
      min-height:104px;
      resize:vertical;
    }
    .form-row input::placeholder,
    .form-row textarea::placeholder{color:rgba(255,255,255,.64)}
    .form-row input:focus,
    .form-row textarea:focus{
      border-color:rgba(255,255,255,.52);
      background:rgba(255,255,255,.16);
    }
    .form-tip{
      margin:10px 0 0;
      font-size:13px;
      color:rgba(255,255,255,.70);
    }

    .site-footer{
      color:rgba(232,237,247,.78);
      background:#080d1a;
      padding:58px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:34px;
      padding-bottom:36px;
      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;
      margin-bottom:14px;
    }
    .footer-brand .brand-mark{
      width:40px;
      height:40px;
      box-shadow:none;
    }
    .footer-grid p{
      margin:0;
      max-width:560px;
      color:rgba(232,237,247,.68);
    }
    .footer-col h3{
      margin:0 0 14px;
      color:#fff;
      font-size:16px;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:rgba(232,237,247,.70);
      transition:var(--transition);
    }
    .footer-links a:hover{
      color:#fff;
      transform:translateX(3px);
    }
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:18px;
      padding-top:24px;
      font-size:14px;
      color:rgba(232,237,247,.56);
    }

    @media (max-width:1024px){
      .brand-name{max-width:260px}
      .hero{min-height:auto}
      .hero-grid,
      .notice-card,
      .editorial,
      .faq-wrap,
      .cta-card{
        grid-template-columns:1fr;
      }
      .hero-panel{max-width:660px}
      .feature-grid{grid-template-columns:repeat(2,1fr)}
      .category-grid{grid-template-columns:repeat(2,1fr)}
      .faq-aside{position:relative;top:auto}
      .image-stack{min-height:420px}
      .footer-grid{grid-template-columns:1fr 1fr}
    }

    @media (max-width:768px){
      :root{--header-h:70px}
      .container{width:min(100% - 28px,var(--container))}
      .site-header{height:auto;min-height:var(--header-h)}
      .nav-wrap{min-height:var(--header-h);flex-wrap:wrap}
      .nav-toggle{display:grid;place-items:center}
      .header-actions{margin-left:auto}
      .mini-note{display:none}
      .nav{
        display:none;
        width:100%;
        flex-direction:column;
        align-items:stretch;
        padding:0 0 14px;
      }
      .nav.open{display:flex}
      .nav a{
        width:100%;
        border-radius:16px;
        padding:13px 14px;
        background:#f6f8fc;
      }
      .hero-grid{padding:62px 0}
      .hero h1{font-size:clamp(34px,10vw,54px)}
      .hero-lead{font-size:17px}
      .hero-actions .btn{width:100%}
      .section{padding:72px 0}
      .section-head{
        display:block;
        margin-bottom:26px;
      }
      .section-desc{font-size:16px}
      .notice-card{padding:26px}
      .feature-grid,
      .news-grid,
      .proof-grid{
        grid-template-columns:1fr;
      }
      .content-toolbar{
        flex-direction:column;
        align-items:stretch;
      }
      .search-box{width:100%}
      .image-stack{min-height:360px}
      .image-main{inset:0 36px 60px 0}
      .image-float{width:52%}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{flex-direction:column}
    }

    @media (max-width:520px){
      .brand-name{max-width:190px;font-size:16px}
      .brand-mark{width:38px;height:38px;border-radius:13px}
      .hero-points li{width:100%;justify-content:flex-start}
      .panel-cover{min-height:190px}
      .panel-body{padding:18px}
      .notice-card,.cta-card{border-radius:28px;padding:22px}
      .category-grid{grid-template-columns:1fr}
      .feature-card{min-height:auto}
      .image-stack{min-height:auto;display:grid;gap:14px}
      .image-main,.image-float{
        position:relative;
        inset:auto;
        width:100%;
        height:230px;
        border-width:6px;
      }
      .faq-item summary{padding-right:50px}
      .cta-form{padding:14px;border-radius:22px}
    }

/* roulang page: article */
:root{
      --bg:#0b1020;
      --bg-soft:#11182c;
      --surface:#ffffff;
      --surface-2:#f6f8fc;
      --surface-dark:#151d33;
      --primary:#d9465f;
      --primary-2:#ff7a59;
      --accent:#7c5cff;
      --safe:#17a56b;
      --warning:#f59e0b;
      --text:#172033;
      --text-soft:#59657a;
      --text-light:#e8edf7;
      --muted:#8b96aa;
      --border:#e5e9f2;
      --border-dark:rgba(255,255,255,.12);
      --shadow:0 18px 50px rgba(17,24,44,.12);
      --shadow-hover:0 24px 70px rgba(17,24,44,.18);
      --radius-xs:10px;
      --radius-sm:14px;
      --radius-md:22px;
      --radius-lg:34px;
      --container:1180px;
      --header-h:78px;
      --transition:all .24s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      line-height:1.7;
      color:var(--text);
      background:linear-gradient(180deg,#fbfcff 0%,#f5f7fb 44%,#ffffff 100%);
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none}
    a:hover{color:inherit}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer;border:0}
    ::selection{background:rgba(217,70,95,.18);color:#111827}
    :focus-visible{outline:3px solid rgba(124,92,255,.35);outline-offset:3px}
    .container{
      width:min(var(--container), calc(100% - 40px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      height:var(--header-h);
      background:rgba(255,255,255,.86);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(229,233,242,.9);
    }
    .nav-wrap{
      height:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:900;
      letter-spacing:-.02em;
      color:#111827;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 12px 28px rgba(217,70,95,.28);
      flex:0 0 auto;
    }
    .brand-mark span{font-weight:900;font-size:18px}
    .brand-name{
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:360px;
      font-size:18px;
    }
    .nav{
      display:flex;
      align-items:center;
      gap:8px;
    }
    .nav a{
      padding:10px 15px;
      border-radius:999px;
      color:#344054;
      font-weight:700;
      font-size:15px;
      transition:var(--transition);
    }
    .nav a:hover{
      background:#f0f3fa;
      color:var(--primary);
      transform:translateY(-1px);
    }
    .nav a.active{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 10px 24px rgba(217,70,95,.24);
    }
    .header-actions{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .mini-note{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:#fff3f5;
      color:#b42b44;
      font-size:13px;
      font-weight:800;
      white-space:nowrap;
    }
    .mini-note::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--safe);
      box-shadow:0 0 0 5px rgba(23,165,107,.13);
    }
    .nav-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      background:#f2f4f8;
      color:#111827;
      transition:var(--transition);
    }
    .nav-toggle:hover{background:#e9edf5}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      padding:13px 18px;
      border-radius:999px;
      font-weight:800;
      line-height:1.2;
      transition:var(--transition);
      white-space:nowrap;
      user-select:none;
      border:0;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      box-shadow:0 16px 36px rgba(217,70,95,.28);
    }
    .btn-primary:hover{
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 20px 48px rgba(217,70,95,.35);
    }
    .btn-line{
      color:var(--primary);
      background:rgba(217,70,95,.08);
      border:1px solid rgba(217,70,95,.16);
    }
    .btn-line:hover{
      color:var(--primary);
      background:rgba(217,70,95,.13);
      transform:translateY(-1px);
    }
    .btn-dark{
      color:#fff;
      background:#151d33;
      box-shadow:0 16px 36px rgba(21,29,51,.18);
    }
    .btn-dark:hover{color:#fff;transform:translateY(-2px);background:#0f172a}
    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(217,70,95,.1);
      color:#b42b44;
      font-size:13px;
      font-weight:900;
      border:1px solid rgba(217,70,95,.16);
    }
    .badge-soft.safe{
      background:rgba(23,165,107,.1);
      color:#0d7f50;
      border-color:rgba(23,165,107,.16);
    }
    .page-hero{
      position:relative;
      overflow:hidden;
      color:#fff;
      background:
        linear-gradient(120deg,rgba(7,12,28,.94) 0%,rgba(11,16,32,.82) 52%,rgba(217,70,95,.42) 100%),
        url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
    }
    .page-hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:radial-gradient(circle at 72% 24%,rgba(124,92,255,.28),transparent 34%),
                 radial-gradient(circle at 18% 78%,rgba(255,122,89,.22),transparent 34%);
      pointer-events:none;
    }
    .article-banner{
      position:relative;
      z-index:1;
      padding:76px 0 64px;
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      align-items:end;
      gap:42px;
    }
    .crumbs{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      color:rgba(255,255,255,.72);
      font-size:14px;
      margin-bottom:20px;
    }
    .crumbs a{transition:var(--transition)}
    .crumbs a:hover{color:#fff}
    .crumbs span{color:rgba(255,255,255,.46)}
    h1{
      margin:18px 0 18px;
      max-width:920px;
      font-size:clamp(34px,5vw,58px);
      line-height:1.12;
      letter-spacing:-.045em;
      font-weight:950;
      overflow-wrap:anywhere;
    }
    .article-summary{
      max-width:860px;
      margin:0;
      color:rgba(255,255,255,.84);
      font-size:18px;
      line-height:1.9;
    }
    .meta-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:26px;
      color:#fff;
    }
    .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,.15);
      backdrop-filter:blur(10px);
      font-size:13px;
      font-weight:800;
    }
    .cover-card{
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.16);
      border-radius:var(--radius-lg);
      padding:14px;
      box-shadow:0 24px 70px rgba(0,0,0,.28);
      backdrop-filter:blur(14px);
    }
    .cover-card img{
      width:100%;
      aspect-ratio:4/3;
      object-fit:cover;
      border-radius:26px;
    }
    .cover-note{
      margin:14px 6px 4px;
      color:rgba(255,255,255,.82);
      font-size:14px;
    }
    main{position:relative}
    .section{padding:72px 0}
    .section-tight{padding:48px 0}
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0, 1fr) 330px;
      gap:34px;
      align-items:start;
      margin-top:-28px;
      position:relative;
      z-index:3;
    }
    .article-shell{
      background:var(--surface);
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .article-alert{
      display:flex;
      gap:14px;
      padding:20px 24px;
      background:linear-gradient(135deg,rgba(217,70,95,.08),rgba(124,92,255,.08));
      border-bottom:1px solid var(--border);
      color:#344054;
    }
    .article-alert strong{
      display:block;
      margin-bottom:2px;
      color:#111827;
      font-weight:950;
    }
    .alert-icon{
      flex:0 0 auto;
      width:38px;
      height:38px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:#fff;
      color:var(--primary);
      box-shadow:0 10px 24px rgba(17,24,44,.08);
      font-weight:950;
    }
    .article-content{
      padding:34px 38px 42px;
      font-size:17px;
      color:#2e3a4f;
      overflow-wrap:anywhere;
    }
    .article-content h2,
    .article-content h3,
    .article-content h4{
      color:#111827;
      letter-spacing:-.025em;
      line-height:1.32;
      margin:1.7em 0 .75em;
      font-weight:950;
    }
    .article-content h2{font-size:30px}
    .article-content h3{font-size:24px}
    .article-content p{margin:0 0 1.05em}
    .article-content a{
      color:var(--primary);
      font-weight:800;
      border-bottom:1px solid rgba(217,70,95,.28);
      transition:var(--transition);
    }
    .article-content a:hover{color:#a91f38;border-color:#a91f38}
    .article-content ul,
    .article-content ol{padding-left:1.25em;margin:0 0 1.2em}
    .article-content li{margin:.36em 0}
    .article-content blockquote{
      margin:26px 0;
      padding:22px 24px;
      border-left:5px solid var(--primary);
      background:#fff7f8;
      border-radius:0 var(--radius-sm) var(--radius-sm) 0;
      color:#3d4658;
      font-weight:700;
    }
    .article-content img{
      border-radius:var(--radius-md);
      margin:28px auto;
      box-shadow:0 18px 48px rgba(17,24,44,.12);
    }
    .article-content table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      overflow:hidden;
      border:1px solid var(--border);
      border-radius:var(--radius-sm);
      margin:24px 0;
      font-size:15px;
    }
    .article-content th,
    .article-content td{
      padding:12px 14px;
      border-bottom:1px solid var(--border);
      vertical-align:top;
    }
    .article-content th{background:#f7f9fd;color:#111827}
    .article-content tr:last-child th,
    .article-content tr:last-child td{border-bottom:0}
    .missing-box{
      min-height:340px;
      display:grid;
      place-items:center;
      text-align:center;
      padding:42px 20px;
    }
    .missing-box h2{
      margin:0 0 10px;
      font-size:34px;
      color:#111827;
      font-weight:950;
    }
    .missing-box p{
      max-width:520px;
      margin:0 auto 22px;
      color:var(--text-soft);
    }
    .side-stack{
      display:grid;
      gap:18px;
      position:sticky;
      top:calc(var(--header-h) + 22px);
    }
    .side-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-md);
      padding:22px;
      box-shadow:0 14px 38px rgba(17,24,44,.08);
    }
    .side-card.dark{
      color:#fff;
      background:linear-gradient(145deg,#151d33,#202b49);
      border-color:rgba(255,255,255,.08);
      overflow:hidden;
      position:relative;
    }
    .side-card.dark::after{
      content:"";
      position:absolute;
      width:170px;
      height:170px;
      right:-70px;
      bottom:-70px;
      background:radial-gradient(circle,rgba(217,70,95,.48),transparent 68%);
      pointer-events:none;
    }
    .side-card h2,
    .side-card h3{
      margin:0 0 12px;
      font-size:20px;
      font-weight:950;
      letter-spacing:-.02em;
    }
    .side-card p{margin:0;color:var(--text-soft)}
    .side-card.dark p{color:rgba(255,255,255,.75)}
    .toc-list{
      display:grid;
      gap:8px;
      margin:14px 0 0;
      padding:0;
      list-style:none;
    }
    .toc-list a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:10px 12px;
      border-radius:14px;
      color:#344054;
      background:#f7f9fd;
      font-weight:800;
      transition:var(--transition);
    }
    .toc-list a:hover{
      color:var(--primary);
      background:#fff1f3;
      transform:translateX(3px);
    }
    .risk-list{
      margin:14px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:10px;
    }
    .risk-list li{
      display:flex;
      gap:10px;
      color:rgba(255,255,255,.86);
      font-weight:700;
    }
    .risk-list li::before{
      content:"";
      width:9px;
      height:9px;
      margin-top:9px;
      border-radius:50%;
      background:var(--warning);
      box-shadow:0 0 0 5px rgba(245,158,11,.14);
      flex:0 0 auto;
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:end;
      gap:24px;
      margin-bottom:28px;
    }
    .section-head h2{
      margin:12px 0 0;
      font-size:clamp(28px,3.4vw,42px);
      line-height:1.18;
      letter-spacing:-.04em;
      font-weight:950;
      color:#111827;
    }
    .section-head p{
      margin:10px 0 0;
      max-width:690px;
      color:var(--text-soft);
      font-size:17px;
    }
    .guide-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .guide-card{
      position:relative;
      min-height:250px;
      padding:26px;
      border-radius:var(--radius-md);
      background:#fff;
      border:1px solid var(--border);
      box-shadow:0 14px 38px rgba(17,24,44,.07);
      transition:var(--transition);
      overflow:hidden;
    }
    .guide-card:hover{
      transform:translateY(-5px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(217,70,95,.2);
    }
    .guide-card::after{
      content:"";
      position:absolute;
      right:-50px;
      bottom:-60px;
      width:160px;
      height:160px;
      border-radius:50%;
      background:linear-gradient(135deg,rgba(217,70,95,.12),rgba(124,92,255,.1));
      pointer-events:none;
    }
    .guide-icon{
      width:48px;
      height:48px;
      border-radius:17px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 14px 34px rgba(124,92,255,.22);
      font-weight:950;
      margin-bottom:18px;
    }
    .guide-card h3{
      margin:0 0 10px;
      font-size:21px;
      font-weight:950;
      letter-spacing:-.02em;
    }
    .guide-card p{margin:0;color:var(--text-soft)}
    .principles{
      background:
        linear-gradient(180deg,rgba(246,248,252,.72),rgba(255,255,255,.92)),
        url('/assets/images/backpic/back-3.webp') center/cover fixed no-repeat;
    }
    .principle-panel{
      display:grid;
      grid-template-columns:.88fr 1.12fr;
      gap:28px;
      align-items:center;
      background:rgba(255,255,255,.9);
      border:1px solid rgba(229,233,242,.9);
      border-radius:var(--radius-lg);
      padding:18px;
      box-shadow:var(--shadow);
      backdrop-filter:blur(12px);
    }
    .principle-image{
      position:relative;
      overflow:hidden;
      border-radius:28px;
      min-height:410px;
      background:#111827;
    }
    .principle-image img{
      width:100%;
      height:100%;
      min-height:410px;
      object-fit:cover;
      opacity:.88;
    }
    .principle-image .image-label{
      position:absolute;
      left:18px;
      bottom:18px;
      right:18px;
      padding:16px;
      border-radius:20px;
      color:#fff;
      background:rgba(11,16,32,.66);
      backdrop-filter:blur(12px);
      border:1px solid rgba(255,255,255,.14);
      font-weight:800;
    }
    .principle-content{padding:18px 18px 18px 6px}
    .principle-list{
      display:grid;
      gap:14px;
      margin:22px 0 0;
      padding:0;
      list-style:none;
    }
    .principle-list li{
      display:flex;
      gap:14px;
      padding:16px;
      background:#f7f9fd;
      border:1px solid var(--border);
      border-radius:18px;
    }
    .check{
      width:28px;
      height:28px;
      border-radius:10px;
      display:grid;
      place-items:center;
      flex:0 0 auto;
      color:#fff;
      background:var(--safe);
      font-weight:950;
      font-size:14px;
    }
    .principle-list strong{
      display:block;
      color:#111827;
      font-weight:950;
      margin-bottom:2px;
    }
    .principle-list span{color:var(--text-soft)}
    .faq-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:16px;
    }
    .faq-item{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-md);
      padding:22px;
      box-shadow:0 12px 32px rgba(17,24,44,.06);
      transition:var(--transition);
    }
    .faq-item:hover{
      transform:translateY(-3px);
      box-shadow:0 18px 44px rgba(17,24,44,.1);
      border-color:rgba(217,70,95,.18);
    }
    .faq-item h3{
      margin:0 0 10px;
      font-size:19px;
      font-weight:950;
      color:#111827;
      letter-spacing:-.02em;
    }
    .faq-item p{margin:0;color:var(--text-soft)}
    .cta{
      padding:0 0 78px;
    }
    .cta-box{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-lg);
      padding:42px;
      color:#fff;
      background:
        radial-gradient(circle at 85% 20%,rgba(255,122,89,.28),transparent 34%),
        linear-gradient(135deg,#11182c 0%,#151d33 50%,#2b1f4f 100%);
      box-shadow:0 24px 70px rgba(17,24,44,.22);
      display:grid;
      grid-template-columns:1fr auto;
      gap:28px;
      align-items:center;
    }
    .cta-box h2{
      margin:0 0 10px;
      font-size:clamp(28px,3.4vw,42px);
      line-height:1.2;
      letter-spacing:-.04em;
      font-weight:950;
    }
    .cta-box p{
      margin:0;
      max-width:760px;
      color:rgba(255,255,255,.78);
      font-size:17px;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      justify-content:flex-end;
    }
    .cta .btn-line{
      color:#fff;
      background:rgba(255,255,255,.1);
      border-color:rgba(255,255,255,.18);
    }
    .cta .btn-line:hover{background:rgba(255,255,255,.16);color:#fff}
    .site-footer{
      color:#d9e1f2;
      background:#0b1020;
      padding:58px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr .8fr .8fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid var(--border-dark);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      font-weight:950;
      font-size:18px;
      margin-bottom:16px;
    }
    .site-footer p{
      max-width:620px;
      margin:0;
      color:rgba(217,225,242,.72);
    }
    .footer-col h3{
      margin:0 0 14px;
      color:#fff;
      font-size:16px;
      font-weight:950;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:rgba(217,225,242,.72);
      transition:var(--transition);
    }
    .footer-links a:hover{
      color:#fff;
      transform:translateX(3px);
    }
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      padding-top:22px;
      color:rgba(217,225,242,.58);
      font-size:14px;
    }
    @media (max-width:1024px){
      :root{--header-h:72px}
      .article-banner,
      .article-layout,
      .principle-panel{
        grid-template-columns:1fr;
      }
      .cover-card{
        max-width:520px;
      }
      .side-stack{
        position:static;
        grid-template-columns:1fr 1fr;
      }
      .guide-grid{grid-template-columns:1fr 1fr}
      .cta-box{grid-template-columns:1fr}
      .cta-actions{justify-content:flex-start}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .brand-name{max-width:230px}
      .mini-note{display:none}
      .nav-toggle{display:grid;place-items:center}
      .nav{
        position:absolute;
        top:calc(var(--header-h) + 10px);
        left:14px;
        right:14px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        padding:12px;
        border-radius:22px;
        background:rgba(255,255,255,.96);
        border:1px solid var(--border);
        box-shadow:var(--shadow);
      }
      .nav.open{display:flex}
      .nav a{
        width:100%;
        text-align:center;
        border-radius:16px;
        padding:13px 14px;
      }
      .article-banner{padding:52px 0 46px;gap:24px}
      .cover-card{display:none}
      .article-content{padding:26px 22px 32px;font-size:16px}
      .article-alert{padding:18px}
      .side-stack{grid-template-columns:1fr}
      .section{padding:56px 0}
      .section-head{display:block}
      .guide-grid,
      .faq-grid{grid-template-columns:1fr}
      .principle-content{padding:8px 4px 10px}
      .principle-image,
      .principle-image img{min-height:300px}
      .footer-grid{grid-template-columns:1fr;gap:26px}
    }
    @media (max-width:520px){
      :root{--header-h:68px}
      .brand-mark{width:38px;height:38px;border-radius:13px}
      .brand-name{font-size:16px;max-width:190px}
      h1{font-size:32px}
      .article-summary{font-size:16px}
      .meta-pill{width:100%;justify-content:center}
      .article-content h2{font-size:25px}
      .article-content h3{font-size:21px}
      .article-content table{display:block;overflow-x:auto}
      .guide-card,.side-card,.faq-item{padding:20px}
      .cta-box{padding:28px 20px;border-radius:26px}
      .cta-actions .btn{width:100%}
      .footer-bottom{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}