/* roulang page: index */
:root{
      --bg:#07111f;
      --bg-soft:#0b1729;
      --surface:#101a2d;
      --surface-2:#14233c;
      --card:#13213a;
      --text:#eaf0ff;
      --muted:#a9b7d4;
      --line:rgba(180,198,232,.16);
      --primary:#7c5cff;
      --primary-2:#37c7ff;
      --accent:#ff7a59;
      --success:#42d392;
      --shadow:0 18px 50px rgba(5, 10, 20, .34);
      --shadow-soft:0 10px 25px rgba(5, 10, 20, .22);
      --radius:22px;
      --radius-lg:28px;
      --radius-sm:14px;
      --container:1180px;
      --gap:24px;
      --transition:all .28s 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",sans-serif;
      color:var(--text);
      background:
        radial-gradient(900px 500px at 15% 0%, rgba(124,92,255,.18), transparent 55%),
        radial-gradient(700px 380px at 85% 15%, rgba(55,199,255,.12), transparent 56%),
        linear-gradient(180deg, #07111f 0%, #091424 42%, #07111f 100%);
      line-height:1.7;
      min-height:100vh;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(124,92,255,.28);color:#fff}
    .skip-link{
      position:absolute;
      left:-999px;
      top:12px;
      z-index:9999;
      background:#fff;
      color:#111;
      padding:10px 14px;
      border-radius:10px;
    }
    .skip-link:focus{left:12px}
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:saturate(160%) blur(16px);
      background:rgba(7,17,31,.72);
      border-bottom:1px solid rgba(180,198,232,.1);
    }
    .header-inner{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .brand-mark{
      width:42px;height:42px;
      border-radius:14px;
      background:
        linear-gradient(135deg, rgba(124,92,255,1), rgba(55,199,255,1));
      box-shadow:0 12px 24px rgba(55,199,255,.18);
      position:relative;
      flex:none;
    }
    .brand-mark:before,
    .brand-mark:after{
      content:"";
      position:absolute;
      inset:auto;
      border-radius:999px;
      background:rgba(255,255,255,.86);
    }
    .brand-mark:before{
      width:16px;height:16px;
      left:9px;top:9px;
      box-shadow:14px 8px 0 rgba(255,255,255,.78);
    }
    .brand-mark:after{
      width:26px;height:3px;
      left:8px;bottom:10px;
      opacity:.9;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      gap:2px;
      min-width:0;
    }
    .brand-text strong{
      font-size:1rem;
      letter-spacing:.2px;
      line-height:1.1;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-text span{
      color:var(--muted);
      font-size:.86rem;
      line-height:1.2;
    }
    .nav{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
      padding:8px;
      border:1px solid rgba(180,198,232,.12);
      background:rgba(16,26,45,.54);
      border-radius:999px;
      box-shadow:var(--shadow-soft);
    }
    .nav-links a{
      position:relative;
      padding:10px 16px;
      border-radius:999px;
      color:var(--muted);
      transition:var(--transition);
      font-size:.95rem;
      line-height:1;
    }
    .nav-links a:hover,
    .nav-links a:focus-visible{
      color:var(--text);
      background:rgba(255,255,255,.06);
      outline:none;
    }
    .nav-links a.active{
      color:#fff;
      background:linear-gradient(135deg, rgba(124,92,255,.96), rgba(55,199,255,.88));
      box-shadow:0 10px 22px rgba(124,92,255,.24);
    }
    .menu-toggle{
      display:none;
      align-items:center;
      justify-content:center;
      width:46px;height:46px;
      border-radius:14px;
      border:1px solid rgba(180,198,232,.14);
      background:rgba(16,26,45,.72);
      color:var(--text);
      box-shadow:var(--shadow-soft);
      cursor:pointer;
      transition:var(--transition);
    }
    .menu-toggle:hover{transform:translateY(-1px);border-color:rgba(124,92,255,.4)}
    .menu-toggle:focus-visible{
      outline:3px solid rgba(55,199,255,.28);
      outline-offset:2px;
    }
    .menu-toggle span{
      width:18px;height:2px;
      background:currentColor;
      position:relative;
      border-radius:2px;
    }
    .menu-toggle span:before,
    .menu-toggle span:after{
      content:"";
      position:absolute;
      left:0;
      width:18px;height:2px;
      background:currentColor;
      border-radius:2px;
    }
    .menu-toggle span:before{top:-6px}
    .menu-toggle span:after{top:6px}

    .hero{
      position:relative;
      padding:28px 0 16px;
    }
    .hero-shell{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(180,198,232,.12);
      border-radius:var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(7,17,31,.64), rgba(7,17,31,.88)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
      padding:28px;
    }
    .hero-shell:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(500px 240px at 15% 18%, rgba(124,92,255,.2), transparent 58%),
        radial-gradient(480px 240px at 86% 24%, rgba(55,199,255,.12), transparent 58%);
      pointer-events:none;
    }
    .hero-inner{
      position:relative;
      display:grid;
      grid-template-columns:repeat(12, minmax(0, 1fr));
      gap:var(--gap);
      align-items:stretch;
    }
    .hero-copy{
      grid-column:span 7;
      padding:10px 6px 6px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 14px;
      border:1px solid rgba(180,198,232,.15);
      background:rgba(255,255,255,.05);
      border-radius:999px;
      color:#fff;
      font-size:.9rem;
      letter-spacing:.2px;
      margin-bottom:16px;
    }
    .eyebrow:before{
      content:"";
      width:8px;height:8px;
      border-radius:999px;
      background:var(--success);
      box-shadow:0 0 0 4px rgba(66,211,146,.15);
    }
    h1{
      margin:0 0 14px;
      font-size:clamp(2.2rem, 4.5vw, 4.5rem);
      line-height:1.06;
      letter-spacing:-.03em;
    }
    .hero-lead{
      margin:0;
      max-width:56rem;
      color:#d7e2fb;
      font-size:1.05rem;
      line-height:1.85;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin:24px 0 18px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:46px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid transparent;
      cursor:pointer;
      transition:var(--transition);
      font-weight:600;
      white-space:nowrap;
    }
    .btn:focus-visible{
      outline:3px solid rgba(55,199,255,.3);
      outline-offset:2px;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg, var(--primary), var(--primary-2));
      box-shadow:0 16px 30px rgba(55,199,255,.18);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 34px rgba(55,199,255,.22)}
    .btn-ghost{
      color:var(--text);
      background:rgba(255,255,255,.04);
      border-color:rgba(180,198,232,.14);
    }
    .btn-ghost:hover{
      transform:translateY(-2px);
      background:rgba(255,255,255,.08);
      border-color:rgba(124,92,255,.34);
    }
    .search-bar{
      display:flex;
      gap:10px;
      margin-top:14px;
      padding:10px;
      border-radius:22px;
      background:rgba(8,16,31,.58);
      border:1px solid rgba(180,198,232,.12);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
    }
    .search-bar input{
      flex:1;
      min-width:0;
      border:none;
      outline:none;
      background:transparent;
      color:var(--text);
      padding:4px 10px;
    }
    .search-bar input::placeholder{color:#8ea0c7}
    .search-bar button{
      border:none;
      background:linear-gradient(135deg, rgba(124,92,255,1), rgba(255,122,89,1));
      color:#fff;
      border-radius:16px;
      padding:0 18px;
      min-height:44px;
      cursor:pointer;
      box-shadow:0 14px 28px rgba(124,92,255,.18);
      transition:var(--transition);
    }
    .search-bar button:hover{transform:translateY(-1px);filter:brightness(1.03)}
    .search-bar button:focus-visible{
      outline:3px solid rgba(255,255,255,.18);
      outline-offset:2px;
    }
    .hero-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      list-style:none;
      padding:0;
      margin:18px 0 0;
    }
    .hero-tags li{
      padding:9px 12px;
      border-radius:999px;
      border:1px solid rgba(180,198,232,.12);
      background:rgba(255,255,255,.05);
      color:#dce5f8;
      font-size:.93rem;
    }
    .hero-aside{
      grid-column:span 5;
      display:flex;
      flex-direction:column;
      gap:14px;
      min-width:0;
    }
    .glass-card{
      border:1px solid rgba(180,198,232,.12);
      background:linear-gradient(180deg, rgba(21,33,58,.86), rgba(13,22,40,.88));
      border-radius:24px;
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .notice-card{
      position:relative;
      padding:20px;
      min-height:186px;
    }
    .notice-card:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(380px 180px at 100% 0%, rgba(55,199,255,.16), transparent 60%),
        radial-gradient(280px 160px at 10% 100%, rgba(124,92,255,.18), transparent 60%);
      pointer-events:none;
    }
    .notice-card > *{position:relative}
    .notice-card h2{
      margin:0 0 10px;
      font-size:1.18rem;
      line-height:1.35;
    }
    .notice-card p{
      margin:0;
      color:var(--muted);
      font-size:.96rem;
    }
    .notice-meta{
      margin-top:16px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .meta-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(180,198,232,.12);
      color:#eaf0ff;
      font-size:.88rem;
    }
    .meta-pill i{
      width:8px;height:8px;
      border-radius:999px;
      background:var(--accent);
      box-shadow:0 0 0 4px rgba(255,122,89,.12);
      flex:none;
    }
    .mini-stack{
      display:grid;
      gap:14px;
      grid-template-columns:repeat(3, minmax(0,1fr));
    }
    .mini-card{
      padding:16px 14px;
      border-radius:20px;
      border:1px solid rgba(180,198,232,.12);
      background:rgba(255,255,255,.04);
      transition:var(--transition);
      min-width:0;
    }
    .mini-card:hover{
      transform:translateY(-3px);
      border-color:rgba(124,92,255,.28);
      box-shadow:0 12px 24px rgba(5,10,20,.18);
    }
    .mini-card strong{
      display:block;
      margin-bottom:6px;
      font-size:.95rem;
    }
    .mini-card span{
      color:var(--muted);
      font-size:.88rem;
      line-height:1.55;
    }

    .section{
      padding:30px 0;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:18px;
      margin-bottom:18px;
    }
    .section-head .title-wrap{
      max-width:820px;
    }
    .section h2{
      margin:0 0 8px;
      font-size:clamp(1.5rem, 2.5vw, 2.1rem);
      line-height:1.2;
      letter-spacing:-.02em;
    }
    .section p.section-desc{
      margin:0;
      color:var(--muted);
      max-width:66ch;
    }
    .section-kicker{
      color:#b9c8ea;
      font-size:.88rem;
      text-transform:uppercase;
      letter-spacing:.12em;
      margin-bottom:10px;
    }
    .pill-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#dbe6ff;
      padding:10px 14px;
      border-radius:999px;
      border:1px solid rgba(180,198,232,.12);
      background:rgba(255,255,255,.04);
      transition:var(--transition);
      white-space:nowrap;
    }
    .pill-link:hover{
      transform:translateY(-2px);
      border-color:rgba(55,199,255,.3);
      background:rgba(255,255,255,.07);
    }
    .pill-link:focus-visible{
      outline:3px solid rgba(55,199,255,.24);
      outline-offset:2px;
    }

    .feature-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:20px;
    }
    .feature-card{
      position:relative;
      overflow:hidden;
      border-radius:24px;
      background:linear-gradient(180deg, rgba(21,33,58,.94), rgba(14,24,43,.98));
      border:1px solid rgba(180,198,232,.12);
      box-shadow:var(--shadow-soft);
      transition:var(--transition);
    }
    .feature-card:hover{
      transform:translateY(-4px);
      border-color:rgba(124,92,255,.28);
      box-shadow:0 18px 34px rgba(5,10,20,.22);
    }
    .feature-media{
      position:relative;
      aspect-ratio:16/10;
      overflow:hidden;
      background:#0d1628;
    }
    .feature-media img{
      width:100%;
      height:100%;
      object-fit:cover;
      transform:scale(1.01);
      transition:transform .4s ease;
    }
    .feature-card:hover .feature-media img{transform:scale(1.06)}
    .feature-media:after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, transparent 30%, rgba(7,17,31,.72) 100%);
    }
    .feature-body{
      padding:18px 18px 20px;
    }
    .feature-body .badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#fff;
      background:rgba(124,92,255,.18);
      border:1px solid rgba(124,92,255,.3);
      padding:7px 10px;
      border-radius:999px;
      font-size:.82rem;
      margin-bottom:12px;
    }
    .feature-body h3{
      margin:0 0 8px;
      font-size:1.12rem;
      line-height:1.45;
    }
    .feature-body p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
      line-height:1.75;
    }

    .strip-banner{
      padding:12px 0 32px;
    }
    .banner-box{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-lg);
      border:1px solid rgba(180,198,232,.12);
      background:
        linear-gradient(135deg, rgba(7,17,31,.52), rgba(7,17,31,.84)),
        url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
      box-shadow:var(--shadow);
      padding:28px;
      min-height:240px;
      display:flex;
      align-items:flex-end;
    }
    .banner-box:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(700px 260px at 15% 22%, rgba(124,92,255,.22), transparent 60%),
        radial-gradient(520px 220px at 82% 18%, rgba(55,199,255,.12), transparent 58%);
      pointer-events:none;
    }
    .banner-content{
      position:relative;
      max-width:720px;
    }
    .banner-content .badge{
      display:inline-flex;
      margin-bottom:12px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.12);
      color:#fff;
      font-size:.86rem;
    }
    .banner-content h2{
      margin:0 0 10px;
      font-size:clamp(1.5rem, 3vw, 2.4rem);
      line-height:1.2;
    }
    .banner-content p{
      margin:0;
      max-width:60ch;
      color:#dde7fb;
    }
    .banner-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:18px;
    }
    .banner-tags span{
      display:inline-flex;
      align-items:center;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.09);
      color:#fff;
      font-size:.88rem;
    }

    .latest-layout{
      display:grid;
      gap:18px;
    }
    .latest-grid{
      display:grid;
      grid-template-columns:repeat(2, minmax(0,1fr));
      gap:18px;
    }
    .post-card{
      display:block;
      padding:18px;
      border-radius:24px;
      border:1px solid rgba(180,198,232,.12);
      background:linear-gradient(180deg, rgba(19,33,58,.95), rgba(13,22,40,.95));
      box-shadow:var(--shadow-soft);
      transition:var(--transition);
      min-height:100%;
    }
    .post-card:hover{
      transform:translateY(-4px);
      border-color:rgba(124,92,255,.3);
      box-shadow:0 18px 34px rgba(5,10,20,.24);
    }
    .post-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:12px;
    }
    .post-cat{
      display:inline-flex;
      align-items:center;
      padding:7px 10px;
      border-radius:999px;
      background:rgba(55,199,255,.12);
      border:1px solid rgba(55,199,255,.18);
      color:#d9f4ff;
      font-size:.82rem;
      white-space:nowrap;
    }
    .post-time{
      color:var(--muted);
      font-size:.84rem;
      white-space:nowrap;
    }
    .post-card h3{
      margin:0 0 10px;
      font-size:1.08rem;
      line-height:1.5;
    }
    .post-card p{
      margin:0;
      color:var(--muted);
      font-size:.94rem;
      line-height:1.75;
    }
    .post-more{
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin-top:16px;
      color:#fff;
      font-weight:600;
      font-size:.92rem;
    }
    .post-more:after{
      content:"→";
      transition:var(--transition);
    }
    .post-card:hover .post-more:after{transform:translateX(4px)}
    .empty-state{
      padding:28px;
      border-radius:24px;
      border:1px dashed rgba(180,198,232,.18);
      background:rgba(255,255,255,.03);
      color:#d7e2fb;
      text-align:center;
    }
    .empty-state p{
      margin:0;
      font-size:1rem;
      letter-spacing:.2px;
    }

    .topics-grid{
      display:grid;
      grid-template-columns:repeat(4, minmax(0,1fr));
      gap:18px;
    }
    .topic-card{
      padding:18px;
      border-radius:24px;
      border:1px solid rgba(180,198,232,.12);
      background:
        linear-gradient(180deg, rgba(19,33,58,.94), rgba(13,22,40,.98));
      box-shadow:var(--shadow-soft);
      transition:var(--transition);
      min-height:100%;
      position:relative;
      overflow:hidden;
    }
    .topic-card:before{
      content:"";
      position:absolute;
      inset:auto -22% -24% auto;
      width:150px;height:150px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(124,92,255,.16), transparent 68%);
      pointer-events:none;
    }
    .topic-card:hover{
      transform:translateY(-4px);
      border-color:rgba(55,199,255,.24);
    }
    .topic-index{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:42px;height:42px;
      border-radius:14px;
      color:#fff;
      background:linear-gradient(135deg, rgba(124,92,255,.95), rgba(55,199,255,.9));
      box-shadow:0 14px 28px rgba(124,92,255,.18);
      font-weight:700;
      margin-bottom:14px;
    }
    .topic-card h3{
      margin:0 0 8px;
      font-size:1.08rem;
      line-height:1.35;
    }
    .topic-card p{
      margin:0;
      color:var(--muted);
      font-size:.94rem;
      line-height:1.75;
    }

    .proof-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:18px;
    }
    .proof-card{
      padding:18px;
      border-radius:22px;
      border:1px solid rgba(180,198,232,.12);
      background:rgba(255,255,255,.04);
      box-shadow:var(--shadow-soft);
    }
    .proof-card strong{
      display:block;
      margin-bottom:8px;
      font-size:1.02rem;
    }
    .proof-card p{
      margin:0;
      color:var(--muted);
      font-size:.94rem;
      line-height:1.75;
    }

    .faq-grid{
      display:grid;
      grid-template-columns:1fr;
      gap:12px;
    }
    details.faq-item{
      border:1px solid rgba(180,198,232,.12);
      background:rgba(255,255,255,.04);
      border-radius:20px;
      overflow:hidden;
      box-shadow:var(--shadow-soft);
    }
    details.faq-item[open]{
      border-color:rgba(124,92,255,.28);
      background:rgba(255,255,255,.05);
    }
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      font-weight:600;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{
      content:"+";
      width:28px;height:28px;
      border-radius:999px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(180,198,232,.12);
      flex:none;
      transition:var(--transition);
    }
    .faq-item[open] summary:after{
      content:"–";
      background:rgba(124,92,255,.18);
      border-color:rgba(124,92,255,.28);
    }
    .faq-item .faq-body{
      padding:0 20px 18px;
      color:var(--muted);
      line-height:1.8;
    }

    .cta-box{
      position:relative;
      overflow:hidden;
      padding:30px;
      border-radius:var(--radius-lg);
      border:1px solid rgba(180,198,232,.12);
      background:
        linear-gradient(135deg, rgba(16,26,45,.94), rgba(8,16,31,.96)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
    }
    .cta-box:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(520px 220px at 10% 18%, rgba(124,92,255,.22), transparent 60%),
        radial-gradient(440px 200px at 88% 20%, rgba(255,122,89,.12), transparent 58%);
      pointer-events:none;
    }
    .cta-inner{
      position:relative;
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:20px;
      align-items:center;
    }
    .cta-inner h2{
      margin:0 0 10px;
      font-size:clamp(1.5rem, 2.8vw, 2.3rem);
    }
    .cta-inner p{
      margin:0;
      color:#d8e4fb;
      max-width:64ch;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      justify-content:flex-end;
    }
    .cta-panel{
      display:flex;
      flex-direction:column;
      gap:12px;
      align-items:stretch;
      padding:18px;
      border-radius:22px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(180,198,232,.12);
    }
    .cta-panel label{
      color:#cdd9f4;
      font-size:.92rem;
    }
    .cta-panel input{
      width:100%;
      min-height:46px;
      border-radius:14px;
      border:1px solid rgba(180,198,232,.14);
      background:rgba(7,17,31,.55);
      color:var(--text);
      padding:0 14px;
      outline:none;
    }
    .cta-panel input::placeholder{color:#8798bb}
    .cta-panel input:focus{
      border-color:rgba(55,199,255,.32);
      box-shadow:0 0 0 4px rgba(55,199,255,.12);
    }
    .cta-panel .mini-note{
      color:var(--muted);
      font-size:.86rem;
      line-height:1.6;
    }

    .site-footer{
      padding:26px 0 36px;
      border-top:1px solid rgba(180,198,232,.1);
      margin-top:14px;
      background:linear-gradient(180deg, rgba(7,17,31,.02), rgba(7,17,31,.24));
    }
    .footer-inner{
      display:grid;
      grid-template-columns:1.2fr .8fr 1fr;
      gap:20px;
      padding:18px 0 0;
    }
    .footer-brand{
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .footer-brand p{
      margin:0;
      color:var(--muted);
      max-width:42ch;
      line-height:1.8;
    }
    .footer-links,
    .footer-meta{
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .footer-links a,
    .footer-meta a{
      color:#dce6fb;
      width:max-content;
      transition:var(--transition);
    }
    .footer-links a:hover,
    .footer-meta a:hover{
      color:#fff;
      transform:translateX(3px);
    }
    .footer-title{
      color:#fff;
      font-weight:700;
      margin-bottom:4px;
    }
    .footer-note{
      color:var(--muted);
      font-size:.88rem;
      line-height:1.75;
    }
    .copyright{
      margin-top:18px;
      padding-top:18px;
      border-top:1px solid rgba(180,198,232,.1);
      color:#91a4ca;
      font-size:.86rem;
      line-height:1.7;
    }

    .section-divider{
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(180,198,232,.18), transparent);
      margin:18px 0;
    }

    @media (max-width: 1080px){
      .hero-copy{grid-column:span 12}
      .hero-aside{grid-column:span 12}
      .mini-stack{grid-template-columns:repeat(3, minmax(0,1fr))}
      .feature-grid,
      .topics-grid,
      .proof-grid,
      .footer-inner{grid-template-columns:repeat(2, minmax(0,1fr))}
      .latest-grid{grid-template-columns:1fr}
      .cta-inner{grid-template-columns:1fr}
      .cta-actions{justify-content:flex-start}
    }
    @media (max-width: 820px){
      .nav-links{
        display:none;
        position:absolute;
        top:72px;
        left:16px;
        right:16px;
        border-radius:22px;
        flex-direction:column;
        align-items:stretch;
        padding:10px;
        gap:8px;
        background:rgba(10,19,34,.96);
        box-shadow:var(--shadow);
      }
      .nav-links.open{display:flex}
      .nav-links a{
        padding:12px 14px;
        border-radius:16px;
      }
      .menu-toggle{display:inline-flex}
      .header-inner{position:relative}
      .feature-grid,
      .topics-grid,
      .proof-grid,
      .footer-inner,
      .mini-stack{grid-template-columns:1fr}
      .hero-shell{padding:20px}
      .hero-tags{gap:8px}
      .section-head{
        align-items:flex-start;
        flex-direction:column;
      }
      .search-bar{
        flex-direction:column;
      }
      .search-bar button{width:100%}
      .banner-box,.cta-box{padding:22px}
    }
    @media (max-width: 560px){
      .container{width:min(var(--container), calc(100% - 20px))}
      .site-header{backdrop-filter:blur(10px)}
      .header-inner{min-height:70px}
      .brand-mark{width:38px;height:38px;border-radius:12px}
      .brand-text span{display:none}
      .hero{padding-top:18px}
      .hero-shell{border-radius:24px}
      h1{font-size:clamp(2rem, 11vw, 3.1rem)}
      .hero-lead,.section p.section-desc,.banner-content p{font-size:.96rem}
      .hero-actions,.banner-tags,.cta-actions{width:100%}
      .btn,.pill-link{width:100%}
      .post-card,.feature-card,.topic-card,.proof-card,.empty-state,.faq-item{border-radius:18px}
      .notice-card{min-height:auto}
      .footer-inner{gap:16px}
      .copyright{font-size:.82rem}
    }

/* roulang page: article */
:root{
      --bg:#07111f;
      --bg-soft:#0b1729;
      --surface:#101a2d;
      --surface-2:#14233c;
      --card:#13213a;
      --text:#eaf0ff;
      --muted:#a9b7d4;
      --line:rgba(180,198,232,.16);
      --primary:#7c5cff;
      --primary-2:#37c7ff;
      --accent:#ff7a59;
      --success:#42d392;
      --shadow:0 18px 50px rgba(5, 10, 20, .34);
      --shadow-soft:0 10px 25px rgba(5, 10, 20, .22);
      --radius:22px;
      --radius-lg:28px;
      --radius-sm:14px;
      --container:1180px;
      --gap:24px;
      --transition:all .28s ease;
    }
    html{scroll-behavior:smooth}
    *{box-sizing:border-box}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(900px 500px at 15% 0%, rgba(124,92,255,.18), transparent 55%),
        radial-gradient(700px 380px at 85% 15%, rgba(55,199,255,.12), transparent 56%),
        linear-gradient(180deg, #07111f 0%, #091424 42%, #07111f 100%);
      line-height:1.7;
      min-height:100vh;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(124,92,255,.35);color:#fff}
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:saturate(160%) blur(16px);
      background:rgba(7,17,31,.72);
      border-bottom:1px solid rgba(180,198,232,.1);
    }
    .header-inner{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .brand-mark{
      width:42px;height:42px;
      border-radius:14px;
      background:
        linear-gradient(135deg, rgba(124,92,255,1), rgba(55,199,255,1));
      box-shadow:0 12px 24px rgba(55,199,255,.18);
      position:relative;
      flex:none;
    }
    .brand-mark:before,
    .brand-mark:after{
      content:"";
      position:absolute;
      inset:auto;
      border-radius:999px;
      background:rgba(255,255,255,.86);
    }
    .brand-mark:before{
      width:16px;height:16px;
      left:9px;top:9px;
      box-shadow:14px 8px 0 rgba(255,255,255,.78);
    }
    .brand-mark:after{
      width:26px;height:3px;
      left:8px;bottom:10px;
      opacity:.9;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      gap:2px;
      min-width:0;
    }
    .brand-text strong{
      font-size:1rem;
      letter-spacing:.2px;
      line-height:1.1;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-text span{
      color:var(--muted);
      font-size:.86rem;
      line-height:1.2;
    }
    .nav{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
      padding:8px;
      border:1px solid rgba(180,198,232,.12);
      background:rgba(16,26,45,.54);
      border-radius:999px;
      box-shadow:var(--shadow-soft);
    }
    .nav-links a{
      position:relative;
      padding:10px 16px;
      border-radius:999px;
      color:var(--muted);
      transition:var(--transition);
      font-size:.95rem;
      line-height:1;
    }
    .nav-links a:hover,
    .nav-links a:focus-visible{
      color:var(--text);
      background:rgba(255,255,255,.06);
      outline:none;
    }
    .nav-links a.active{
      color:#fff;
      background:linear-gradient(135deg, rgba(124,92,255,.96), rgba(55,199,255,.88));
      box-shadow:0 10px 22px rgba(124,92,255,.24);
    }
    .menu-toggle{
      display:none;
      align-items:center;
      justify-content:center;
      width:46px;height:46px;
      border-radius:14px;
      border:1px solid rgba(180,198,232,.14);
      background:rgba(16,26,45,.72);
      color:var(--text);
      box-shadow:var(--shadow-soft);
      cursor:pointer;
      transition:var(--transition);
    }
    .menu-toggle:hover{transform:translateY(-1px);border-color:rgba(124,92,255,.4)}
    .menu-toggle:focus-visible{
      outline:3px solid rgba(55,199,255,.28);
      outline-offset:2px;
    }
    .menu-toggle span{
      width:18px;height:2px;
      background:currentColor;
      position:relative;
      border-radius:2px;
    }
    .menu-toggle span:before,
    .menu-toggle span:after{
      content:"";
      position:absolute;
      left:0;
      width:18px;height:2px;
      background:currentColor;
      border-radius:2px;
    }
    .menu-toggle span:before{top:-6px}
    .menu-toggle span:after{top:6px}

    .page-main{
      padding:28px 0 42px;
    }

    .article-hero{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(180,198,232,.12);
      border-radius:var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(7,17,31,.62), rgba(7,17,31,.9)),
        url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
      box-shadow:var(--shadow);
      padding:28px;
      margin-bottom:24px;
    }
    .article-hero:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(520px 260px at 18% 20%, rgba(124,92,255,.2), transparent 58%),
        radial-gradient(460px 240px at 84% 18%, rgba(55,199,255,.14), transparent 58%);
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns:minmax(0, 1.65fr) minmax(300px, .85fr);
      gap:24px;
      align-items:stretch;
    }
    .hero-copy{
      min-width:0;
      padding:6px 4px 4px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 14px;
      border:1px solid rgba(180,198,232,.15);
      background:rgba(255,255,255,.05);
      border-radius:999px;
      color:#fff;
      font-size:.9rem;
      letter-spacing:.2px;
      margin-bottom:16px;
      width:fit-content;
    }
    .eyebrow:before{
      content:"";
      width:8px;height:8px;
      border-radius:999px;
      background:var(--success);
      box-shadow:0 0 0 4px rgba(66,211,146,.15);
    }
    .hero-copy h1{
      margin:0 0 14px;
      font-size:clamp(2rem, 4.6vw, 3.6rem);
      line-height:1.15;
      letter-spacing:-.02em;
      text-wrap:balance;
    }
    .hero-lead{
      margin:0;
      max-width:54rem;
      color:#d7e2fb;
      font-size:1.05rem;
      line-height:1.9;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin:24px 0 18px;
    }
    .btnx{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:12px 18px;
      border-radius:999px;
      border:1px solid transparent;
      transition:var(--transition);
      cursor:pointer;
      white-space:nowrap;
      text-decoration:none;
      min-height:46px;
      font-weight:600;
    }
    .btnx:hover{
      transform:translateY(-1px);
      box-shadow:0 14px 28px rgba(5,10,20,.28);
    }
    .btnx:focus-visible{
      outline:3px solid rgba(55,199,255,.28);
      outline-offset:2px;
    }
    .btn-primaryx{
      color:#fff;
      background:linear-gradient(135deg, rgba(124,92,255,.96), rgba(55,199,255,.9));
      box-shadow:0 14px 26px rgba(124,92,255,.24);
    }
    .btn-ghostx{
      color:var(--text);
      border-color:rgba(180,198,232,.16);
      background:rgba(255,255,255,.04);
    }
    .meta-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
      margin-top:8px;
    }
    .chip{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(180,198,232,.12);
      color:var(--muted);
      font-size:.92rem;
    }
    .chip strong{color:#fff;font-weight:600}
    .hero-panel{
      display:flex;
      flex-direction:column;
      gap:14px;
    }
    .preview-card{
      overflow:hidden;
      border-radius:24px;
      border:1px solid rgba(180,198,232,.14);
      background:rgba(16,26,45,.62);
      box-shadow:var(--shadow-soft);
    }
    .preview-card img{
      width:100%;
      aspect-ratio:16/10;
      object-fit:cover;
    }
    .preview-card .preview-body{
      padding:16px;
    }
    .preview-card .preview-title{
      font-size:1.02rem;
      margin:0 0 6px;
    }
    .preview-card .preview-text{
      margin:0;
      color:var(--muted);
      font-size:.94rem;
      line-height:1.7;
    }
    .quick-grid{
      display:grid;
      grid-template-columns:repeat(2, minmax(0, 1fr));
      gap:12px;
    }
    .mini-card{
      padding:14px 14px 13px;
      border-radius:18px;
      background:rgba(16,26,45,.56);
      border:1px solid rgba(180,198,232,.12);
      box-shadow:var(--shadow-soft);
    }
    .mini-card .label{
      color:var(--muted);
      font-size:.84rem;
      margin-bottom:6px;
    }
    .mini-card .value{
      font-weight:700;
      line-height:1.35;
      word-break:break-word;
    }

    .article-layout{
      display:grid;
      grid-template-columns:minmax(0, 1.6fr) minmax(300px, .92fr);
      gap:var(--gap);
      align-items:start;
    }
    .panel{
      border:1px solid rgba(180,198,232,.12);
      background:linear-gradient(180deg, rgba(19,33,58,.92), rgba(16,26,45,.94));
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .panel-header{
      padding:22px 22px 0;
    }
    .panel-body{
      padding:22px;
    }
    .section-title{
      margin:0;
      font-size:1.35rem;
      line-height:1.35;
      letter-spacing:-.01em;
    }
    .section-subtitle{
      margin:8px 0 0;
      color:var(--muted);
      font-size:.97rem;
      line-height:1.75;
    }
    .split-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:16px;
      margin-bottom:16px;
    }
    .split-head .small{
      color:var(--muted);
      font-size:.92rem;
    }

    .article-card{
      margin-bottom:var(--gap);
    }
    .article-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:16px;
    }
    .pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      border:1px solid rgba(180,198,232,.14);
      background:rgba(255,255,255,.05);
      color:var(--muted);
      font-size:.9rem;
    }
    .pill strong{color:#fff;font-weight:600}
    .article-content{
      padding-top:6px;
      color:#dfe8fb;
      font-size:1rem;
    }
    .article-content :where(h2,h3,h4){
      color:#fff;
      margin:1.8em 0 .75em;
      line-height:1.35;
      letter-spacing:-.01em;
    }
    .article-content h2{font-size:1.4rem}
    .article-content h3{font-size:1.2rem}
    .article-content p{
      margin:0 0 1em;
      color:#dbe5fb;
    }
    .article-content a{
      color:#8dd8ff;
      text-decoration:underline;
      text-decoration-color:rgba(141,216,255,.4);
      text-underline-offset:3px;
    }
    .article-content a:hover{color:#b1e6ff}
    .article-content :where(ul,ol){
      padding-left:1.3rem;
      margin:0 0 1.1em;
      color:#dbe5fb;
    }
    .article-content li{margin:.45em 0}
    .article-content blockquote{
      margin:1.2rem 0;
      padding:16px 18px;
      border-left:4px solid var(--primary);
      background:rgba(124,92,255,.08);
      border-radius:16px;
      color:#eaf0ff;
    }
    .article-content hr{
      border:0;
      border-top:1px solid rgba(180,198,232,.14);
      margin:1.5rem 0;
    }
    .article-content :where(img,iframe){
      max-width:100%;
      border-radius:18px;
      overflow:hidden;
    }
    .article-content figure{
      margin:1.2rem 0;
    }
    .article-content figcaption{
      color:var(--muted);
      font-size:.88rem;
      text-align:center;
      margin-top:8px;
    }
    .article-content table{
      width:100%;
      border-collapse:collapse;
      margin:1rem 0 1.2rem;
      overflow:hidden;
      display:block;
      border-radius:18px;
      border:1px solid rgba(180,198,232,.14);
      background:rgba(255,255,255,.03);
    }
    .article-content th,
    .article-content td{
      padding:12px 14px;
      border-bottom:1px solid rgba(180,198,232,.12);
      text-align:left;
      vertical-align:top;
    }
    .article-content th{color:#fff;background:rgba(255,255,255,.04)}
    .article-content tr:last-child td{border-bottom:0}

    .sidebar{
      position:sticky;
      top:96px;
      display:flex;
      flex-direction:column;
      gap:var(--gap);
    }
    .side-card{
      padding:18px;
      border-radius:var(--radius);
      border:1px solid rgba(180,198,232,.12);
      background:rgba(16,26,45,.76);
      box-shadow:var(--shadow-soft);
    }
    .side-card-title{
      margin:0 0 12px;
      font-size:1.02rem;
      line-height:1.35;
    }
    .summary-list{
      display:grid;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .summary-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:var(--muted);
      font-size:.95rem;
      line-height:1.7;
    }
    .summary-list li:before{
      content:"";
      width:8px;height:8px;
      border-radius:999px;
      margin-top:.55em;
      background:linear-gradient(135deg, var(--primary), var(--primary-2));
      flex:none;
      box-shadow:0 0 0 4px rgba(124,92,255,.12);
    }
    .search-form{
      display:flex;
      gap:10px;
      margin-top:12px;
    }
    .search-form input{
      flex:1;
      min-width:0;
      padding:12px 14px;
      border-radius:14px;
      border:1px solid rgba(180,198,232,.14);
      background:rgba(7,17,31,.5);
      color:var(--text);
      outline:none;
      transition:var(--transition);
    }
    .search-form input::placeholder{color:#8fa1c6}
    .search-form input:focus{
      border-color:rgba(55,199,255,.45);
      box-shadow:0 0 0 4px rgba(55,199,255,.12);
    }
    .search-form button{
      padding:12px 16px;
      border:none;
      border-radius:14px;
      color:#fff;
      background:linear-gradient(135deg, rgba(124,92,255,.96), rgba(55,199,255,.9));
      box-shadow:0 12px 24px rgba(124,92,255,.22);
      transition:var(--transition);
    }
    .search-form button:hover{transform:translateY(-1px)}
    .search-form button:focus-visible{
      outline:3px solid rgba(55,199,255,.28);
      outline-offset:2px;
    }
    .link-grid{
      display:grid;
      gap:10px;
    }
    .link-card{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:13px 14px;
      border-radius:16px;
      border:1px solid rgba(180,198,232,.12);
      background:rgba(255,255,255,.04);
      color:var(--text);
      transition:var(--transition);
    }
    .link-card:hover{
      transform:translateY(-1px);
      border-color:rgba(124,92,255,.32);
      background:rgba(124,92,255,.09);
    }
    .link-card span{
      color:var(--muted);
      font-size:.9rem;
    }
    .link-card strong{
      font-weight:600;
    }

    .faq-wrap{
      margin-top:var(--gap);
      padding:24px;
      border-radius:var(--radius-lg);
      border:1px solid rgba(180,198,232,.12);
      background:linear-gradient(180deg, rgba(16,26,45,.88), rgba(19,33,58,.92));
      box-shadow:var(--shadow);
    }
    .faq-grid{
      display:grid;
      grid-template-columns:repeat(2, minmax(0, 1fr));
      gap:14px;
      margin-top:18px;
    }
    .faq-item{
      padding:18px;
      border-radius:18px;
      border:1px solid rgba(180,198,232,.12);
      background:rgba(255,255,255,.04);
      transition:var(--transition);
    }
    .faq-item:hover{
      transform:translateY(-1px);
      border-color:rgba(55,199,255,.24);
      box-shadow:0 12px 22px rgba(5,10,20,.22);
    }
    .faq-q{
      margin:0 0 8px;
      font-size:1rem;
      line-height:1.45;
      color:#fff;
    }
    .faq-a{
      margin:0;
      color:var(--muted);
      line-height:1.8;
      font-size:.95rem;
    }

    .cta-wrap{
      margin-top:var(--gap);
      padding:26px;
      border-radius:var(--radius-lg);
      border:1px solid rgba(180,198,232,.12);
      background:
        linear-gradient(135deg, rgba(124,92,255,.12), rgba(55,199,255,.08)),
        rgba(16,26,45,.9);
      box-shadow:var(--shadow);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .cta-wrap h2{
      margin:0 0 8px;
      font-size:1.45rem;
      line-height:1.3;
    }
    .cta-wrap p{
      margin:0;
      color:var(--muted);
      line-height:1.8;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:flex-end;
      flex:none;
    }

    .empty-state{
      padding:56px 22px;
      text-align:center;
    }
    .empty-state h1{
      margin:0 0 12px;
      font-size:clamp(1.8rem, 4vw, 2.6rem);
    }
    .empty-state p{
      margin:0 auto 24px;
      max-width:42rem;
      color:var(--muted);
      line-height:1.85;
    }

    .site-footer{
      margin-top:26px;
      border-top:1px solid rgba(180,198,232,.1);
      background:rgba(7,17,31,.76);
      backdrop-filter:saturate(160%) blur(16px);
    }
    .footer-inner{
      display:grid;
      grid-template-columns:1.4fr .8fr .9fr;
      gap:24px;
      padding:30px 0 18px;
    }
    .footer-brand .brand{
      margin-bottom:14px;
    }
    .footer-brand p{
      margin:0;
      color:var(--muted);
      line-height:1.9;
      max-width:34rem;
    }
    .footer-title{
      font-size:1rem;
      color:#fff;
      margin-bottom:12px;
      font-weight:700;
    }
    .footer-links,
    .footer-meta{
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .footer-links a{
      color:var(--muted);
      transition:var(--transition);
      width:fit-content;
    }
    .footer-links a:hover,
    .footer-links a:focus-visible{
      color:#fff;
      transform:translateX(2px);
      outline:none;
    }
    .footer-note{
      color:var(--muted);
      line-height:1.7;
      font-size:.94rem;
      word-break:break-word;
    }
    .footer-note a{
      color:#8dd8ff;
      text-decoration:underline;
      text-underline-offset:3px;
    }
    .copyright{
      padding:14px 0 24px;
      border-top:1px solid rgba(180,198,232,.08);
      color:#8fa1c6;
      font-size:.92rem;
      line-height:1.8;
    }

    @media (max-width: 1024px){
      .hero-grid,
      .article-layout,
      .footer-inner{
        grid-template-columns:1fr;
      }
      .sidebar{
        position:static;
      }
      .cta-wrap{
        flex-direction:column;
        align-items:flex-start;
      }
      .cta-actions{
        justify-content:flex-start;
      }
    }
    @media (max-width: 768px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .site-header{backdrop-filter:saturate(160%) blur(10px)}
      .header-inner{min-height:70px}
      .menu-toggle{display:inline-flex}
      .nav-links{
        position:absolute;
        right:16px;
        top:70px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:6px;
        padding:10px;
        border-radius:20px;
        min-width:min(240px, calc(100vw - 32px));
      }
      .nav-links.is-open{display:flex}
      .nav-links a{width:100%; text-align:center}
      .article-hero,
      .faq-wrap,
      .cta-wrap{
        padding:20px;
      }
      .panel-body{
        padding:18px;
      }
      .quick-grid,
      .faq-grid{
        grid-template-columns:1fr;
      }
      .search-form{
        flex-direction:column;
      }
    }
    @media (max-width: 520px){
      .brand-text span{display:none}
      .article-hero{
        border-radius:24px;
      }
      .hero-copy h1{
        font-size:1.8rem;
      }
      .hero-actions,
      .meta-row,
      .article-meta{
        gap:8px;
      }
      .btnx{
        width:100%;
      }
      .cta-actions .btnx{
        width:auto;
      }
      .chip,
      .pill{
        font-size:.86rem;
      }
      .panel-header,
      .panel-body{
        padding-left:16px;
        padding-right:16px;
      }
      .article-content h2{font-size:1.28rem}
      .article-content h3{font-size:1.12rem}
    }

/* 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}