/* roulang page: index */
:root{
      --bg:#0b0f14;
      --bg2:#10161d;
      --panel:#121a23;
      --panel-2:#0f151d;
      --card:#141d27;
      --line:rgba(255,255,255,.08);
      --line-2:rgba(120,255,230,.18);
      --text:#ecf3f7;
      --muted:#9aa8b6;
      --soft:#6e7c8b;
      --primary:#4df2d2;
      --primary-2:#20c9f3;
      --accent:#a76bff;
      --warn:#ff8a5b;
      --shadow:0 20px 60px rgba(0,0,0,.34);
      --shadow-soft:0 14px 30px rgba(0,0,0,.18);
      --radius:18px;
      --radius-sm:14px;
      --container:1180px;
      --gap:24px;
      --gap-sm:16px;
      --ease:cubic-bezier(.2,.8,.2,1);
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      background:
        radial-gradient(circle at top right, rgba(77,242,210,.10), transparent 24%),
        radial-gradient(circle at 18% 6%, rgba(167,107,255,.12), transparent 18%),
        linear-gradient(180deg, #090d12 0%, #0b1016 42%, #0a0e13 100%);
      color:var(--text);
      line-height:1.7;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(255,255,255,.028) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.028) 1px, transparent 1px);
      background-size:28px 28px;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.5), rgba(0,0,0,.08) 72%, rgba(0,0,0,0));
      opacity:.28;
      z-index:-1;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input,textarea,select{font:inherit}
    button{
      border:0;
      cursor:pointer;
      background:none;
      color:inherit;
    }
    :focus-visible{
      outline:2px solid rgba(77,242,210,.9);
      outline-offset:3px;
      border-radius:10px;
    }

    .container{
      width:min(100% - 32px, var(--container));
      margin:0 auto;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:100;
      backdrop-filter:saturate(140%) blur(14px);
      background:rgba(9,13,18,.72);
      border-bottom:1px solid rgba(255,255,255,.06);
    }
    .header-inner{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:800;
      letter-spacing:.2px;
    }
    .brand-mark{
      width:40px;height:40px;
      border-radius:12px;
      background:
        linear-gradient(145deg, rgba(77,242,210,.95), rgba(32,201,243,.75));
      display:grid;
      place-items:center;
      color:#071016;
      box-shadow:0 10px 28px rgba(77,242,210,.22);
      flex:0 0 auto;
      position:relative;
      overflow:hidden;
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:1px;
      border-radius:11px;
      border:1px solid rgba(255,255,255,.18);
      pointer-events:none;
    }
    .brand-text{
      font-size:1rem;
      line-height:1.2;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-sub{
      display:block;
      margin-top:3px;
      font-size:.78rem;
      color:var(--muted);
      font-weight:600;
      letter-spacing:.08em;
      text-transform:uppercase;
    }

    .nav-wrap{
      display:flex;
      align-items:center;
      gap:18px;
    }
    .site-nav{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
    }
    .site-nav a{
      padding:10px 14px;
      border-radius:999px;
      color:var(--muted);
      border:1px solid transparent;
      transition:transform .24s var(--ease), background .24s var(--ease), color .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
      font-weight:600;
      font-size:.95rem;
      letter-spacing:.01em;
    }
    .site-nav a:hover{
      color:var(--text);
      background:rgba(255,255,255,.04);
      border-color:rgba(255,255,255,.08);
      transform:translateY(-1px);
      box-shadow:0 8px 18px rgba(0,0,0,.12);
    }
    .site-nav a.active{
      color:#061118;
      background:linear-gradient(135deg, rgba(77,242,210,1), rgba(32,201,243,.95));
      box-shadow:0 14px 30px rgba(32,201,243,.16);
    }

    .header-search{
      width:240px;
      display:none;
      align-items:center;
      gap:10px;
      border:1px solid rgba(255,255,255,.08);
      border-radius:999px;
      padding:9px 14px;
      background:rgba(255,255,255,.03);
    }
    .header-search input{
      width:100%;
      border:0;
      outline:none;
      background:transparent;
      color:var(--text);
      min-width:0;
    }
    .header-search input::placeholder{color:#748294}
    .header-search .mini-icon{
      color:var(--primary);
      font-weight:700;
    }

    .nav-toggle{
      display:none;
      width:42px;height:42px;
      border-radius:12px;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(255,255,255,.04);
      color:var(--text);
      align-items:center;
      justify-content:center;
      transition:transform .24s var(--ease), border-color .24s var(--ease), background .24s var(--ease);
    }
    .nav-toggle:hover{
      transform:translateY(-1px);
      border-color:rgba(77,242,210,.4);
      background:rgba(77,242,210,.08);
    }

    .hero{
      position:relative;
      overflow:hidden;
      padding:44px 0 22px;
    }
    .hero-shell{
      position:relative;
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:28px;
      align-items:stretch;
      padding:28px;
      border:1px solid rgba(255,255,255,.08);
      border-radius:28px;
      background:
        linear-gradient(180deg, rgba(15,21,29,.88), rgba(15,21,29,.74)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
      isolation:isolate;
    }
    .hero-shell::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(125deg, rgba(77,242,210,.11), transparent 36%),
        radial-gradient(circle at 85% 10%, rgba(167,107,255,.10), transparent 24%);
      z-index:-1;
    }
    .hero-copy{
      padding:10px 0 6px;
      display:flex;
      flex-direction:column;
      justify-content:center;
      gap:18px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      width:fit-content;
      color:#b7c7d6;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(255,255,255,.04);
      padding:8px 12px;
      border-radius:999px;
      font-size:.9rem;
      letter-spacing:.02em;
    }
    .eyebrow .dot{
      width:8px;height:8px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 6px rgba(77,242,210,.14);
    }
    h1{
      margin:0;
      font-size:clamp(2rem, 4vw, 4.4rem);
      line-height:1.08;
      letter-spacing:-.03em;
      font-weight:900;
      max-width:12ch;
    }
    .hero-subtitle{
      margin:0;
      color:#c7d2dc;
      font-size:1.04rem;
      max-width:58ch;
    }
    .hero-form{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      align-items:center;
      margin-top:4px;
    }
    .search-box{
      flex:1 1 300px;
      display:flex;
      align-items:center;
      gap:10px;
      padding:14px 16px;
      border-radius:16px;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(255,255,255,.04);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.03);
    }
    .search-box svg{
      color:var(--primary);
      flex:0 0 auto;
    }
    .search-box input{
      width:100%;
      min-width:0;
      border:0;
      outline:none;
      background:transparent;
      color:var(--text);
    }
    .search-box input::placeholder{color:#7b8998}
    .btn-row{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:0 18px;
      border-radius:14px;
      font-weight:700;
      letter-spacing:.01em;
      transition:transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
      border:1px solid transparent;
      white-space:nowrap;
    }
    .btn:hover{
      transform:translateY(-2px);
      box-shadow:0 16px 30px rgba(0,0,0,.18);
    }
    .btn-primary{
      color:#061118;
      background:linear-gradient(135deg, rgba(77,242,210,1), rgba(32,201,243,.95));
      box-shadow:0 12px 24px rgba(77,242,210,.14);
    }
    .btn-primary:hover{
      box-shadow:0 18px 34px rgba(77,242,210,.18);
      filter:saturate(1.05);
    }
    .btn-outline{
      color:var(--text);
      background:rgba(255,255,255,.03);
      border-color:rgba(255,255,255,.1);
    }
    .btn-outline:hover{
      border-color:rgba(77,242,210,.32);
      background:rgba(77,242,210,.08);
    }

    .hero-visual{
      position:relative;
      min-height:560px;
      display:grid;
      align-items:end;
    }
    .visual-card{
      position:relative;
      overflow:hidden;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.08);
      background:var(--panel);
      box-shadow:var(--shadow-soft);
      min-height:100%;
    }
    .visual-card::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg, rgba(7,11,16,.14), rgba(7,11,16,.68)),
        linear-gradient(135deg, rgba(77,242,210,.12), transparent 42%);
      z-index:1;
    }
    .visual-card img{
      width:100%;
      height:100%;
      object-fit:cover;
      transform:scale(1.02);
      transition:transform .45s var(--ease), filter .45s var(--ease);
      filter:saturate(1.06) contrast(1.05);
    }
    .visual-card:hover img{
      transform:scale(1.06);
    }
    .visual-overlay{
      position:absolute;
      inset:auto 18px 18px 18px;
      z-index:2;
      display:grid;
      gap:14px;
    }
    .overlay-title{
      display:flex;
      justify-content:space-between;
      gap:12px;
      align-items:flex-end;
      padding:16px 18px;
      border-radius:18px;
      background:rgba(12,17,24,.74);
      border:1px solid rgba(255,255,255,.08);
      backdrop-filter:blur(14px);
    }
    .overlay-title strong{
      display:block;
      font-size:1.05rem;
      line-height:1.3;
    }
    .overlay-title span{
      display:block;
      color:var(--muted);
      font-size:.9rem;
      margin-top:4px;
    }
    .score-chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(77,242,210,.12);
      border:1px solid rgba(77,242,210,.24);
      color:#d9fff7;
      font-size:.9rem;
      white-space:nowrap;
    }
    .visual-mini{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
    }
    .mini-card{
      border-radius:16px;
      overflow:hidden;
      position:relative;
      min-height:118px;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(255,255,255,.03);
      box-shadow:0 12px 24px rgba(0,0,0,.16);
    }
    .mini-card img{
      width:100%;
      height:100%;
      object-fit:cover;
      opacity:.88;
      transform:scale(1.02);
    }
    .mini-card::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(8,12,17,.12), rgba(8,12,17,.72));
    }
    .mini-card .mini-copy{
      position:absolute;
      inset:auto 12px 12px 12px;
      z-index:1;
    }
    .mini-card .mini-copy b{
      display:block;
      font-size:.98rem;
      line-height:1.25;
      margin-bottom:4px;
    }
    .mini-card .mini-copy small{
      color:#bfd0de;
      font-size:.82rem;
    }

    .strip{
      margin-top:18px;
      display:grid;
      grid-template-columns:repeat(5, 1fr);
      gap:12px;
    }
    .strip-item{
      padding:16px 16px 15px;
      border-radius:18px;
      background:rgba(16,22,30,.9);
      border:1px solid rgba(255,255,255,.07);
      box-shadow:0 10px 24px rgba(0,0,0,.12);
      min-height:96px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap:8px;
    }
    .strip-item .label{
      font-size:.82rem;
      color:var(--muted);
      letter-spacing:.06em;
    }
    .strip-item .value{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:8px;
      font-weight:800;
      line-height:1.2;
    }
    .strip-item .value span{
      color:var(--text);
      font-size:1.02rem;
    }
    .tagline{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 11px;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      color:#d4dee7;
      font-size:.84rem;
      border:1px solid rgba(255,255,255,.08);
      transition:background .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
    }
    .tag:hover{
      transform:translateY(-1px);
      background:rgba(77,242,210,.08);
      border-color:rgba(77,242,210,.26);
      color:#f5fffd;
    }
    .status-dot{
      width:7px;height:7px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 4px rgba(77,242,210,.12);
      flex:0 0 auto;
    }

    .section{
      padding:34px 0;
    }
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:18px;
    }
    .section-head h2{
      margin:0;
      font-size:clamp(1.45rem, 2.2vw, 2.1rem);
      line-height:1.2;
      letter-spacing:-.02em;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      max-width:60ch;
      font-size:.98rem;
    }
    .section-link{
      color:#dffaf4;
      display:inline-flex;
      align-items:center;
      gap:8px;
      font-weight:700;
      padding:10px 14px;
      border:1px solid rgba(77,242,210,.18);
      background:rgba(77,242,210,.06);
      border-radius:999px;
      transition:transform .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
      white-space:nowrap;
    }
    .section-link:hover{
      transform:translateY(-1px);
      background:rgba(77,242,210,.1);
      border-color:rgba(77,242,210,.3);
    }

    .feature-grid{
      display:grid;
      grid-template-columns:1.4fr .95fr;
      gap:18px;
      align-items:stretch;
    }
    .feature-main,
    .feature-side{
      display:grid;
      gap:18px;
    }
    .feature-card{
      position:relative;
      overflow:hidden;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.08);
      background:var(--card);
      box-shadow:var(--shadow-soft);
      min-height:100%;
      transition:transform .24s var(--ease), border-color .24s var(--ease);
    }
    .feature-card:hover{
      transform:translateY(-2px);
      border-color:rgba(77,242,210,.18);
    }
    .feature-card .cover{
      position:relative;
      min-height:300px;
      overflow:hidden;
    }
    .feature-card .cover img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .5s var(--ease);
    }
    .feature-card:hover .cover img{
      transform:scale(1.05);
    }
    .feature-card .cover::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(4,8,13,.06), rgba(4,8,13,.84));
    }
    .feature-card .body{
      position:absolute;
      inset:auto 18px 18px 18px;
      z-index:1;
      padding:18px;
      border-radius:20px;
      background:rgba(9,13,18,.72);
      border:1px solid rgba(255,255,255,.08);
      backdrop-filter:blur(12px);
    }
    .feature-card h3{
      margin:0 0 10px;
      font-size:1.28rem;
      line-height:1.3;
      letter-spacing:-.01em;
    }
    .feature-card p{
      margin:0;
      color:#ced9e3;
      font-size:.96rem;
    }
    .meta-row{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:14px;
    }
    .meta{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 10px;
      border-radius:999px;
      color:#e8f4f2;
      background:rgba(77,242,210,.09);
      border:1px solid rgba(77,242,210,.16);
      font-size:.82rem;
    }
    .feature-side .feature-card .cover{min-height:182px}
    .feature-side .feature-card .body{
      inset:auto 14px 14px 14px;
      padding:14px 15px;
    }
    .feature-side .feature-card h3{
      font-size:1.08rem;
      margin-bottom:6px;
    }

    .stats-grid{
      display:grid;
      grid-template-columns:repeat(4, 1fr);
      gap:16px;
    }
    .stat-card{
      position:relative;
      overflow:hidden;
      padding:20px 18px;
      border-radius:20px;
      background:linear-gradient(180deg, rgba(20,29,39,.96), rgba(13,19,26,.94));
      border:1px solid rgba(255,255,255,.08);
      box-shadow:0 12px 24px rgba(0,0,0,.14);
    }
    .stat-card::before{
      content:"";
      position:absolute;
      top:0;
      left:0;
      width:100%;
      height:2px;
      background:linear-gradient(90deg, transparent, rgba(77,242,210,.8), rgba(32,201,243,.8), transparent);
      opacity:.8;
    }
    .stat-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      margin-bottom:12px;
    }
    .stat-top .status{
      width:10px;height:10px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 6px rgba(77,242,210,.12);
    }
    .stat-num{
      font-size:2.1rem;
      line-height:1;
      font-weight:900;
      letter-spacing:-.03em;
    }
    .stat-label{
      display:block;
      margin-top:8px;
      color:var(--muted);
      font-size:.92rem;
    }
    .stat-desc{
      margin-top:10px;
      color:#cfdae4;
      font-size:.92rem;
      min-height:44px;
    }

    .category-grid{
      display:grid;
      grid-template-columns:repeat(6, 1fr);
      gap:14px;
    }
    .category-pill{
      min-height:84px;
      padding:16px 14px;
      border-radius:18px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap:8px;
      transition:transform .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
    }
    .category-pill:hover{
      transform:translateY(-2px);
      border-color:rgba(77,242,210,.28);
      background:rgba(77,242,210,.07);
    }
    .category-pill strong{
      font-size:1rem;
      line-height:1.25;
    }
    .category-pill span{
      color:var(--muted);
      font-size:.82rem;
    }
    .category-pill.active{
      background:linear-gradient(135deg, rgba(77,242,210,.12), rgba(32,201,243,.08));
      border-color:rgba(77,242,210,.28);
    }

    .content-grid{
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:18px;
      align-items:start;
    }
    .content-main,
    .content-stack{
      display:grid;
      gap:16px;
    }
    .post-card{
      display:grid;
      grid-template-columns:1.02fr 1.08fr;
      gap:16px;
      padding:14px;
      border-radius:22px;
      background:rgba(18,26,35,.94);
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow-soft);
      transition:transform .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
    }
    .post-card:hover{
      transform:translateY(-2px);
      border-color:rgba(77,242,210,.2);
      box-shadow:0 18px 36px rgba(0,0,0,.2);
    }
    .post-card.reverse{
      grid-template-columns:1.08fr 1.02fr;
    }
    .post-card.reverse .post-media{order:2}
    .post-card.reverse .post-content{order:1}
    .post-media{
      min-height:210px;
      overflow:hidden;
      border-radius:18px;
      position:relative;
    }
    .post-media img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .5s var(--ease);
    }
    .post-card:hover .post-media img{
      transform:scale(1.05);
    }
    .post-content{
      padding:4px 4px 4px 2px;
      display:flex;
      flex-direction:column;
      justify-content:center;
      gap:12px;
    }
    .post-content h3,
    .mini-entry h3{
      margin:0;
      font-size:1.18rem;
      line-height:1.3;
    }
    .post-content p{
      margin:0;
      color:#cbd5df;
      font-size:.95rem;
    }
    .post-footer{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      align-items:center;
      color:var(--muted);
      font-size:.84rem;
    }
    .post-tags{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .post-tags .tag{
      padding:6px 10px;
      font-size:.78rem;
    }

    .mini-list{
      display:grid;
      gap:16px;
    }
    .mini-entry{
      display:grid;
      grid-template-columns:140px 1fr;
      gap:14px;
      padding:12px;
      border-radius:20px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.08);
      transition:transform .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
    }
    .mini-entry:hover{
      transform:translateY(-2px);
      border-color:rgba(167,107,255,.22);
      background:rgba(167,107,255,.06);
    }
    .mini-entry .thumb{
      min-height:108px;
      border-radius:16px;
      overflow:hidden;
    }
    .mini-entry img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .45s var(--ease);
    }
    .mini-entry:hover img{
      transform:scale(1.06);
    }
    .mini-entry .info{
      display:flex;
      flex-direction:column;
      justify-content:center;
      gap:10px;
      min-width:0;
    }
    .mini-entry p{
      margin:0;
      color:#cbd5df;
      font-size:.92rem;
    }
    .mini-entry .meta-row{margin-top:0}

    .faq-grid{
      display:grid;
      grid-template-columns:1fr;
      gap:12px;
    }
    .faq-item{
      border-radius:18px;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(16,22,30,.9);
      overflow:hidden;
      box-shadow:0 10px 22px rgba(0,0,0,.12);
    }
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      font-weight:700;
      color:var(--text);
      user-select:none;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{
      content:"+";
      width:28px;height:28px;
      flex:0 0 auto;
      display:grid;
      place-items:center;
      border-radius:999px;
      color:#091016;
      background:linear-gradient(135deg, rgba(77,242,210,1), rgba(32,201,243,.92));
      transition:transform .22s var(--ease), background .22s var(--ease);
    }
    .faq-item[open] summary{
      border-bottom:1px solid rgba(255,255,255,.06);
    }
    .faq-item[open] summary::after{
      content:"–";
      transform:rotate(180deg);
    }
    .faq-content{
      padding:0 20px 18px;
      color:#c9d4de;
      font-size:.96rem;
    }

    .cta{
      padding:18px 0 44px;
    }
    .cta-shell{
      position:relative;
      overflow:hidden;
      border-radius:28px;
      border:1px solid rgba(255,255,255,.08);
      background:
        linear-gradient(110deg, rgba(9,13,18,.92), rgba(14,21,29,.86)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
    }
    .cta-shell::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 20% 30%, rgba(77,242,210,.16), transparent 24%),
        radial-gradient(circle at 86% 18%, rgba(167,107,255,.12), transparent 22%);
    }
    .cta-inner{
      position:relative;
      z-index:1;
      padding:32px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
      flex-wrap:wrap;
    }
    .cta-copy{
      max-width:700px;
    }
    .cta-copy h2{
      margin:0 0 10px;
      font-size:clamp(1.5rem, 2.4vw, 2.4rem);
      line-height:1.15;
    }
    .cta-copy p{
      margin:0;
      color:#c9d5e0;
      max-width:66ch;
    }
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
    }

    .site-footer{
      padding:26px 0 32px;
      border-top:1px solid rgba(255,255,255,.06);
      background:rgba(8,11,15,.68);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:20px;
      align-items:start;
    }
    .footer-title{
      margin:0 0 12px;
      font-size:1.05rem;
      font-weight:800;
    }
    .footer-desc{
      margin:0;
      color:var(--muted);
      max-width:46ch;
      font-size:.94rem;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:#dbe6ef;
      width:fit-content;
      transition:color .2s var(--ease), transform .2s var(--ease);
    }
    .footer-links a:hover{
      color:var(--primary);
      transform:translateX(2px);
    }
    .footer-note{
      margin-top:20px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.06);
      color:#80909f;
      display:flex;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
      font-size:.9rem;
    }
    .footer-note a{
      color:#c8d6e1;
    }

    .section-card{
      border-radius:24px;
      background:rgba(255,255,255,.02);
      border:1px solid rgba(255,255,255,.06);
      padding:18px;
    }

    @media (min-width: 1025px){
      .header-search{display:flex}
    }

    @media (max-width: 1120px){
      .feature-grid,
      .content-grid,
      .hero-shell{
        grid-template-columns:1fr;
      }
      .hero-visual{min-height:480px}
      .stats-grid{grid-template-columns:repeat(2, 1fr)}
      .category-grid{grid-template-columns:repeat(3, 1fr)}
      .strip{grid-template-columns:repeat(2, 1fr)}
      .footer-grid{grid-template-columns:1fr 1fr}
    }

    @media (max-width: 820px){
      .site-nav{
        display:none;
        width:100%;
        flex-direction:column;
        align-items:stretch;
        gap:8px;
        padding:14px 0 2px;
      }
      .site-nav.is-open{display:flex}
      .nav-wrap{
        width:100%;
        justify-content:flex-end;
      }
      .nav-toggle{display:inline-flex}
      .header-inner{
        min-height:70px;
        align-items:flex-start;
        padding:14px 0;
        flex-wrap:wrap;
      }
      .brand{flex:1 1 auto}
      .header-search{
        width:100%;
        order:3;
        display:flex;
      }
      .hero{
        padding-top:20px;
      }
      .hero-shell{padding:20px}
      .hero-form{
        flex-direction:column;
        align-items:stretch;
      }
      .btn-row{width:100%}
      .btn-row .btn{flex:1 1 0}
      .visual-mini{grid-template-columns:1fr}
      .strip{grid-template-columns:1fr}
      .stats-grid{grid-template-columns:1fr}
      .category-grid{grid-template-columns:repeat(2, 1fr)}
      .post-card,
      .post-card.reverse,
      .mini-entry{
        grid-template-columns:1fr;
      }
      .post-card.reverse .post-media,
      .post-card.reverse .post-content{order:initial}
      .post-media,.mini-entry .thumb{min-height:200px}
      .footer-grid{grid-template-columns:1fr}
      .section-head{
        flex-direction:column;
        align-items:flex-start;
      }
    }

    @media (max-width: 520px){
      .container{width:min(100% - 22px, var(--container))}
      .hero-shell{border-radius:22px}
      .hero-visual{min-height:420px}
      h1{max-width:100%}
      .category-grid{grid-template-columns:1fr}
      .cta-inner{padding:22px}
      .site-footer{padding-bottom:22px}
      .brand-text{font-size:.96rem}
      .brand-sub{font-size:.72rem}
      .strip-item,.stat-card,.category-pill,.faq-item summary,.faq-content{padding-left:14px;padding-right:14px}
    }

/* roulang page: category1 */
:root{
      --bg:#0c1014;
      --bg-soft:#111820;
      --panel:#151d24;
      --panel-2:#19232b;
      --line:#29353d;
      --line-light:#34434b;
      --text:#eef4f1;
      --muted:#98a8aa;
      --muted-2:#718185;
      --cyan:#6ff4d0;
      --cyan-deep:#2bc6aa;
      --violet:#9a8cff;
      --orange:#ff916d;
      --radius:16px;
      --shadow:0 18px 48px rgba(0,0,0,.24);
      --container:1200px;
      --ease:all .25s ease;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:
        linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px),
        var(--bg);
      background-size:44px 44px;
      color:var(--text);
      font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;
      line-height:1.7;
      font-size:15px;
    }
    body::before{
      content:"";
      position:fixed;
      z-index:-1;
      inset:0;
      pointer-events:none;
      background:linear-gradient(118deg,transparent 0 35%,rgba(111,244,208,.035) 35.2%,transparent 49%,rgba(154,140,255,.025) 71%,transparent 82%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:20;
      background:rgba(12,16,20,.88);
      backdrop-filter:blur(16px);
      border-bottom:1px solid rgba(111,244,208,.12);
    }
    .header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;min-width:max-content}
    .brand-mark{
      width:38px;height:38px;display:grid;place-items:center;
      border:1px solid var(--cyan);color:var(--cyan);
      border-radius:10px;font-weight:900;font-size:20px;
      box-shadow:inset 0 0 18px rgba(111,244,208,.08);
    }
    .brand-text{font-size:16px;font-weight:800;letter-spacing:.02em;line-height:1.25}
    .brand-sub{display:block;color:var(--muted-2);font-size:10px;font-weight:500;letter-spacing:.08em;margin-top:3px}
    .nav-wrap{display:flex;align-items:center;gap:20px}
    .site-nav{display:flex;align-items:center;gap:6px}
    .site-nav a{
      color:var(--muted);padding:9px 13px;border-radius:9px;font-size:14px;
      transition:var(--ease);white-space:nowrap
    }
    .site-nav a:hover,.site-nav a.active{color:var(--text);background:rgba(111,244,208,.09)}
    .site-nav a.active{box-shadow:inset 0 -2px var(--cyan)}
    .header-search{
      width:218px;height:40px;display:flex;align-items:center;gap:8px;
      border:1px solid var(--line);border-radius:10px;padding:0 11px;
      background:rgba(255,255,255,.025)
    }
    .mini-icon{color:var(--cyan);font-size:21px;line-height:1}
    .header-search input{border:0;outline:0;color:var(--text);background:transparent;width:100%;font-size:12px}
    .header-search input::placeholder{color:var(--muted-2)}
    .nav-toggle{display:none;background:none;color:var(--text);border:1px solid var(--line);border-radius:9px;padding:6px 10px}
    .page-hero{
      position:relative;overflow:hidden;
      padding:82px 0 70px;
      background:linear-gradient(90deg,rgba(12,16,20,.98) 20%,rgba(12,16,20,.72)),url('/assets/images/backpic/back-2.webp') center/cover;
      border-bottom:1px solid var(--line)
    }
    .page-hero::after{content:"";position:absolute;right:-7%;bottom:-55%;width:46%;height:130%;background:var(--cyan);opacity:.08;transform:rotate(20deg)}
    .hero-content{position:relative;z-index:1;max-width:800px}
    .eyebrow,.section-kicker{
      display:inline-flex;align-items:center;gap:8px;color:var(--cyan);
      font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase
    }
    .eyebrow::before,.section-kicker::before{content:"";width:22px;height:1px;background:var(--cyan)}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(38px,5vw,68px);line-height:1.08;letter-spacing:-.055em;margin:18px 0 18px;max-width:770px}
    .hero-lead{color:#bdc9c7;max-width:700px;font-size:17px;line-height:1.9;margin-bottom:27px}
    .hero-tags,.filter-bar,.tag-row{display:flex;flex-wrap:wrap;gap:8px}
    .tag,.filter{
      border:1px solid var(--line-light);background:rgba(255,255,255,.035);
      color:#b7c8c4;border-radius:999px;padding:5px 11px;font-size:12px
    }
    .tag.highlight,.filter.active{color:var(--cyan);border-color:rgba(111,244,208,.48);background:rgba(111,244,208,.08)}
    .section{padding:78px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:22px;margin-bottom:27px}
    .section-title{font-size:31px;line-height:1.2;letter-spacing:-.035em;margin:9px 0 0}
    .section-desc{color:var(--muted);max-width:550px;margin:0}
    .filter-bar{padding:14px;background:var(--panel);border:1px solid var(--line);border-radius:13px;margin-bottom:28px}
    .filter{cursor:pointer;transition:var(--ease)}
    .filter:hover{border-color:var(--cyan);color:var(--text)}
    .content-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:28px;align-items:start}
    .featured-card{
      display:grid;grid-template-columns:43% 1fr;min-height:340px;
      background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
      overflow:hidden;box-shadow:var(--shadow);transition:var(--ease)
    }
    .featured-card:hover,.story-card:hover,.rank-item:hover{transform:translateY(-4px);border-color:rgba(111,244,208,.45)}
    .media{position:relative;overflow:hidden;background:#0a0d10}
    .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
    .featured-card:hover img,.story-card:hover img{transform:scale(1.045)}
    .media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 48%,rgba(0,0,0,.45))}
    .featured-body{padding:31px 30px;display:flex;flex-direction:column;justify-content:center}
    .meta{display:flex;align-items:center;gap:12px;color:var(--muted-2);font-size:12px;margin-bottom:14px}
    .status-dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 11px var(--cyan)}
    .featured-body h2{font-size:27px;line-height:1.3;margin:0 0 13px}
    .featured-body p,.story-card p{color:var(--muted);margin-bottom:18px}
    .text-link{color:var(--cyan);font-weight:700;font-size:13px}
    .text-link::after{content:" →";transition:var(--ease)}
    .text-link:hover::after{padding-left:4px}
    .story-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px;margin-top:18px}
    .story-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:var(--ease)}
    .story-card .media{height:150px}
    .story-card .story-body{padding:20px}
    .story-card h3{font-size:18px;line-height:1.4;margin:0 0 8px}
    .sidebar{display:grid;gap:18px}
    .side-box{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:21px}
    .side-title{font-size:15px;margin:0 0 16px;display:flex;justify-content:space-between;align-items:center}
    .side-title span{color:var(--cyan);font-size:11px;font-weight:500}
    .keyword-cloud{display:flex;flex-wrap:wrap;gap:8px}
    .keyword-cloud a{padding:6px 9px;color:#b6c6c3;background:var(--bg-soft);border-radius:7px;font-size:12px;transition:var(--ease)}
    .keyword-cloud a:hover{color:var(--cyan);background:rgba(111,244,208,.08)}
    .rank-list{display:grid;gap:12px}
    .rank-item{display:flex;align-items:center;gap:11px;padding-bottom:11px;border-bottom:1px solid var(--line);transition:var(--ease)}
    .rank-item:last-child{padding-bottom:0;border-bottom:0}
    .rank-num{width:22px;height:22px;border-radius:6px;display:grid;place-items:center;background:rgba(154,140,255,.13);color:var(--violet);font-size:11px;font-weight:800}
    .rank-item strong{font-size:13px;display:block}.rank-item small{color:var(--muted-2);font-size:11px}
    .data-strip{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);overflow:hidden}
    .data-item{padding:22px 24px;border-right:1px solid var(--line);position:relative}
    .data-item:last-child{border-right:0}.data-item::before{content:"";position:absolute;top:0;left:0;width:38px;height:2px;background:var(--cyan)}
    .data-label{color:var(--muted);font-size:12px}.data-value{font-family:ui-monospace,monospace;color:var(--text);font-size:29px;font-weight:800;margin:5px 0}.data-note{font-size:11px;color:var(--muted-2)}
    .faq-list{display:grid;gap:10px;max-width:900px}
    details{border:1px solid var(--line);border-radius:12px;background:var(--panel);transition:var(--ease)}
    details[open]{border-color:rgba(111,244,208,.4)}
    summary{cursor:pointer;list-style:none;padding:19px 22px;font-size:15px;font-weight:700;display:flex;justify-content:space-between;align-items:center}
    summary::-webkit-details-marker{display:none} summary::after{content:"＋";color:var(--cyan);font-size:20px;font-weight:400} details[open] summary::after{content:"－"}
    details p{color:var(--muted);padding:0 22px 20px;margin:0;max-width:760px}
    .cta{
      padding:42px 46px;border-radius:var(--radius);border:1px solid rgba(111,244,208,.28);
      background:linear-gradient(100deg,rgba(111,244,208,.12),rgba(154,140,255,.08));
      display:flex;align-items:center;justify-content:space-between;gap:25px
    }
    .cta h2{font-size:28px;margin:0 0 8px}.cta p{color:var(--muted);margin:0}
    .button{
      display:inline-flex;align-items:center;justify-content:center;min-height:43px;padding:0 18px;
      border-radius:9px;border:1px solid var(--cyan);background:var(--cyan);color:#07120f;
      font-weight:800;font-size:13px;transition:var(--ease);white-space:nowrap
    }
    .button:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 8px 22px rgba(111,244,208,.18)}
    .button.secondary{background:transparent;color:var(--cyan);border-color:var(--line-light)}
    .site-footer{border-top:1px solid var(--line);padding:55px 0 25px;background:#0a0e11}
    .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:50px}
    .footer-desc{color:var(--muted);font-size:13px;max-width:410px;margin:17px 0 0}
    .footer-title{font-size:14px;margin:3px 0 15px}
    .footer-links{display:grid;gap:9px}.footer-links a{color:var(--muted);font-size:13px;transition:var(--ease)}.footer-links a:hover{color:var(--cyan)}
    .footer-note{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:40px;padding-top:19px;color:var(--muted-2);font-size:11px}
    .footer-note a{color:var(--muted)}
    @media(max-width:1024px){
      .header-search{display:none}.content-layout{grid-template-columns:minmax(0,1fr) 245px}
      .featured-card{grid-template-columns:38% 1fr}
    }
    @media(max-width:768px){
      .container{width:min(100% - 34px,var(--container))}
      .header-inner{min-height:68px}.nav-toggle{display:block}.site-nav{display:none;position:absolute;top:68px;left:17px;right:17px;padding:10px;background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.site-nav.open{display:flex}.site-nav a{display:block}
      .page-hero{padding:62px 0 52px}h1{font-size:42px}.hero-lead{font-size:15px}
      .content-layout{grid-template-columns:1fr}.sidebar{grid-template-columns:1fr 1fr}.data-strip{grid-template-columns:repeat(2,1fr)}.data-item:nth-child(2){border-right:0}.data-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .cta{align-items:flex-start;flex-direction:column;padding:32px 25px}.footer-grid{grid-template-columns:1.4fr 1fr;gap:30px}.footer-grid>div:last-child{grid-column:2}
    }
    @media(max-width:520px){
      .brand-sub{display:none}.brand-text{font-size:14px}.page-hero{padding:49px 0 43px}h1{font-size:35px}.section{padding:55px 0}.section-head{display:block}.section-desc{margin-top:12px}.featured-card{display:block}.featured-card .media{height:220px}.featured-body{padding:24px 21px}.story-grid,.sidebar{grid-template-columns:1fr}.story-card .media{height:190px}.data-item{padding:18px 15px}.data-value{font-size:24px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:last-child{grid-column:auto}.footer-note{display:block}.footer-note span{display:block;margin-bottom:7px}
    }