/* roulang page: index */
:root{
      --bg: #0a0f0e;
      --bg-2: #111917;
      --bg-3: #16211d;
      --panel: rgba(19, 28, 25, .82);
      --panel-2: rgba(25, 37, 33, .88);
      --card: rgba(16, 23, 21, .96);
      --text: #edf5f2;
      --muted: #9fb1ab;
      --subtle: #6f827b;
      --line: rgba(191, 220, 212, .12);
      --line-2: rgba(191, 220, 212, .18);
      --accent: #3ee6a6;
      --accent-2: #21c8d2;
      --warm: #d59a47;
      --warm-2: #b5792c;
      --danger: #ff6f61;
      --shadow: 0 16px 40px rgba(0, 0, 0, .28);
      --shadow-soft: 0 10px 24px rgba(0, 0, 0, .18);
      --radius: 18px;
      --radius-sm: 14px;
      --radius-xs: 12px;
      --container: 1240px;
      --gap: 24px;
      --space: clamp(18px, 2vw, 28px);
      --ease: cubic-bezier(.2, .8, .2, 1);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body{
      margin:0;
      font-family: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
      background:
        radial-gradient(circle at top left, rgba(62,230,166,.10), transparent 24%),
        radial-gradient(circle at top right, rgba(33,200,210,.09), transparent 22%),
        linear-gradient(180deg, #091010 0%, #0d1412 42%, #0a0f0e 100%);
      color: var(--text);
      line-height: 1.75;
      letter-spacing: .01em;
      min-height: 100vh;
      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,.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
      background-size: 42px 42px;
      mask-image: linear-gradient(180deg, rgba(0,0,0,.28), transparent 80%);
      opacity: .35;
      z-index:0;
    }
    img{
      max-width:100%;
      display:block;
      border:0;
    }
    a{
      color:inherit;
      text-decoration:none;
      transition: color .22s var(--ease), border-color .22s var(--ease), background-color .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease), opacity .22s var(--ease);
    }
    button, input{
      font: inherit;
    }
    button{
      border:0;
      background:none;
      color:inherit;
      cursor:pointer;
    }
    ::selection{
      background: rgba(62,230,166,.24);
      color: #fff;
    }
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
      position:relative;
      z-index:1;
    }
    .site-note{
      background: linear-gradient(90deg, rgba(62,230,166,.10), rgba(33,200,210,.08));
      color: #d9f4ea;
      border-bottom: 1px solid rgba(255,255,255,.06);
      font-size: 12px;
      letter-spacing: .02em;
    }
    .site-note .container{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap: 12px;
      padding: 8px 0;
      flex-wrap:wrap;
    }
    .site-note strong{
      color: #fff;
      font-weight: 700;
    }
    .site-note .mini-tags{
      display:flex;
      gap:8px;
      flex-wrap:wrap;
    }
    .mini-chip{
      padding: 4px 10px;
      border: 1px solid rgba(255,255,255,.12);
      border-radius: 999px;
      background: rgba(255,255,255,.03);
      color: #d1e7de;
    }
    .site-header{
      position: sticky;
      top:0;
      z-index: 50;
      backdrop-filter: blur(18px);
      background: rgba(10,15,14,.72);
      border-bottom: 1px solid rgba(255,255,255,.06);
    }
    .header-inner{
      display:grid;
      grid-template-columns: auto 1fr minmax(220px, 360px) auto;
      align-items:center;
      gap: 18px;
      min-height: 76px;
      padding: 12px 0;
    }
    .brand{
      display:flex;
      align-items:center;
      gap: 12px;
      min-width: 0;
      font-weight: 800;
      font-size: 20px;
      letter-spacing: .02em;
      white-space: nowrap;
    }
    .brand-mark{
      width: 38px;
      height: 38px;
      border-radius: 14px;
      background:
        linear-gradient(145deg, rgba(62,230,166,.98), rgba(33,200,210,.82));
      box-shadow: 0 10px 24px rgba(33,200,210,.18);
      position: relative;
      flex: 0 0 auto;
    }
    .brand-mark::before{
      content:"";
      position:absolute;
      inset: 9px;
      border-radius: 10px;
      border: 2px solid rgba(10,15,14,.64);
    }
    .brand span{
      display:block;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .site-nav{
      display:flex;
      align-items:center;
      justify-content:center;
      gap: 8px;
      flex-wrap: wrap;
    }
    .nav-link{
      position:relative;
      padding: 11px 14px;
      border-radius: 999px;
      color: var(--muted);
      font-weight: 600;
      font-size: 14px;
      background: transparent;
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .nav-link:hover{
      color:#fff;
      background: rgba(255,255,255,.04);
      border-color: rgba(255,255,255,.06);
    }
    .nav-link.active,
    .nav-link[aria-current="page"]{
      color:#05110d;
      background: linear-gradient(135deg, var(--accent), #90f0c7);
      box-shadow: 0 12px 26px rgba(62,230,166,.16);
    }
    .search-form{
      display:flex;
      align-items:center;
      gap: 8px;
      background: rgba(255,255,255,.03);
      border: 1px solid rgba(255,255,255,.08);
      border-radius: 999px;
      padding: 6px 8px 6px 14px;
      min-width: 0;
      box-shadow: inset 0 1px 0 rgba(255,255,255,.03);
    }
    .search-form svg{
      width: 18px;
      height: 18px;
      color: #89b4a5;
      flex: 0 0 auto;
    }
    .search-input{
      flex: 1;
      min-width: 0;
      border:0;
      outline:0;
      color: var(--text);
      background: transparent;
      padding: 8px 0;
    }
    .search-input::placeholder{
      color: #7f948d;
    }
    .search-btn{
      padding: 10px 14px;
      border-radius: 999px;
      background: linear-gradient(135deg, rgba(62,230,166,.95), rgba(33,200,210,.95));
      color: #07120f;
      font-weight: 700;
      box-shadow: 0 10px 20px rgba(62,230,166,.12);
    }
    .search-btn:hover{
      transform: translateY(-1px);
      box-shadow: 0 14px 26px rgba(62,230,166,.18);
    }
    .menu-toggle{
      display:none;
      width: 44px;
      height: 44px;
      border-radius: 14px;
      border: 1px solid rgba(255,255,255,.08);
      background: rgba(255,255,255,.03);
      color: #eaf3ef;
      align-items:center;
      justify-content:center;
    }
    .menu-toggle span{
      width: 18px;
      height: 2px;
      display:block;
      background: currentColor;
      border-radius: 999px;
      position:relative;
    }
    .menu-toggle span::before,
    .menu-toggle span::after{
      content:"";
      position:absolute;
      left:0;
      width:18px;
      height:2px;
      background: currentColor;
      border-radius:999px;
    }
    .menu-toggle span::before{ top:-6px; }
    .menu-toggle span::after{ top:6px; }

    .mobile-nav{
      display:none;
      border-top: 1px solid rgba(255,255,255,.06);
      background: rgba(9,14,13,.94);
      backdrop-filter: blur(18px);
    }
    .mobile-nav .container{
      padding: 12px 0 18px;
      display:grid;
      gap: 10px;
    }
    .mobile-nav a{
      padding: 13px 14px;
      border-radius: 14px;
      background: rgba(255,255,255,.03);
      border: 1px solid rgba(255,255,255,.06);
      color: var(--muted);
      font-weight: 600;
    }
    .mobile-nav a.active,
    .mobile-nav a[aria-current="page"]{
      color:#06110d;
      background: linear-gradient(135deg, var(--accent), #8cf0c5);
    }

    .hero{
      position: relative;
      overflow: hidden;
      padding: clamp(28px, 4vw, 52px) 0 22px;
      background:
        linear-gradient(180deg, rgba(8,12,11,.56), rgba(8,12,11,.82)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-bottom: 1px solid rgba(255,255,255,.05);
    }
    .hero::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 20% 10%, rgba(62,230,166,.18), transparent 24%),
        radial-gradient(circle at 82% 8%, rgba(33,200,210,.14), transparent 20%),
        linear-gradient(180deg, transparent 0%, rgba(10,15,14,.30) 100%);
      pointer-events:none;
    }
    .hero-grid{
      position: relative;
      z-index: 1;
      display:grid;
      grid-template-columns: 1.25fr .92fr;
      gap: clamp(18px, 3vw, 40px);
      align-items: stretch;
      padding: 34px 0 18px;
    }
    .hero-copy{
      padding: clamp(12px, 1.8vw, 20px) 0;
      max-width: 760px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(62,230,166,.12);
      border: 1px solid rgba(62,230,166,.22);
      color: #d8fff0;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .02em;
      margin-bottom: 16px;
    }
    .hero h1{
      margin:0;
      font-size: clamp(34px, 5vw, 58px);
      line-height: 1.08;
      letter-spacing: -.03em;
      font-weight: 800;
      max-width: 12ch;
      text-wrap: balance;
      text-shadow: 0 8px 30px rgba(0,0,0,.24);
    }
    .hero p{
      margin: 18px 0 0;
      font-size: clamp(16px, 1.5vw, 18px);
      color: #d0ddd9;
      max-width: 64ch;
    }
    .hero-actions{
      display:flex;
      gap: 12px;
      flex-wrap:wrap;
      margin-top: 26px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap: 10px;
      min-height: 46px;
      padding: 0 18px;
      border-radius: 14px;
      border: 1px solid transparent;
      font-weight: 700;
      letter-spacing: .01em;
      transition: transform .22s var(--ease), box-shadow .22s var(--ease), background-color .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
    }
    .btn:hover{
      transform: translateY(-1px);
    }
    .btn-primary{
      color: #07120f;
      background: linear-gradient(135deg, var(--accent), #91f1c8);
      box-shadow: 0 14px 28px rgba(62,230,166,.18);
    }
    .btn-primary:hover{
      box-shadow: 0 18px 36px rgba(62,230,166,.24);
    }
    .btn-secondary{
      color: #e8f0ed;
      background: rgba(255,255,255,.04);
      border-color: rgba(255,255,255,.10);
    }
    .btn-secondary:hover{
      background: rgba(255,255,255,.06);
      border-color: rgba(255,255,255,.16);
    }
    .hero-panel{
      display:grid;
      gap: 14px;
      align-content:start;
    }
    .glass-card{
      border: 1px solid rgba(255,255,255,.08);
      background: linear-gradient(180deg, rgba(18,25,23,.84), rgba(13,18,17,.92));
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .hero-panel .glass-card{
      padding: 18px;
    }
    .hero-panel h2{
      margin: 0 0 12px;
      font-size: 16px;
      font-weight: 800;
      letter-spacing: .01em;
    }
    .quick-grid{
      display:grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
    }
    .quick-item{
      padding: 14px 14px 13px;
      border-radius: 16px;
      background: rgba(255,255,255,.03);
      border: 1px solid rgba(255,255,255,.06);
      min-height: 104px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap: 8px;
    }
    .quick-item strong{
      font-size: 28px;
      line-height: 1;
      letter-spacing: -.03em;
      color: #fff;
    }
    .quick-item span{
      color: var(--muted);
      font-size: 13px;
      line-height: 1.5;
    }
    .quick-item em{
      font-style: normal;
      font-size: 12px;
      color: #dff9ef;
      display:inline-flex;
      align-items:center;
      gap: 6px;
    }
    .quick-item em::before{
      content:"";
      width: 6px;
      height: 6px;
      border-radius: 999px;
      background: var(--accent);
      box-shadow: 0 0 0 4px rgba(62,230,166,.12);
    }
    .hero-tags{
      display:flex;
      flex-wrap:wrap;
      gap: 8px;
      margin-top: 16px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      padding: 7px 11px;
      border-radius: 999px;
      font-size: 12px;
      line-height:1;
      color: #dff4ee;
      border: 1px solid rgba(255,255,255,.08);
      background: rgba(255,255,255,.03);
    }
    .tag.accent{
      background: rgba(62,230,166,.12);
      border-color: rgba(62,230,166,.24);
      color: #dcffef;
    }
    .tag.warm{
      background: rgba(213,154,71,.12);
      border-color: rgba(213,154,71,.22);
      color: #ffead0;
    }

    .stats{
      padding: 0 0 6px;
      margin-top: 10px;
    }
    .stats-row{
      display:grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
    }
    .stat{
      position: relative;
      border-radius: 16px;
      padding: 16px 18px;
      background: linear-gradient(180deg, rgba(20,29,26,.96), rgba(14,20,18,.92));
      border: 1px solid rgba(255,255,255,.06);
      box-shadow: var(--shadow-soft);
      overflow:hidden;
    }
    .stat::after{
      content:"";
      position:absolute;
      inset:auto -14px -16px auto;
      width: 84px;
      height: 84px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(62,230,166,.18), transparent 64%);
    }
    .stat b{
      display:block;
      font-size: 24px;
      line-height: 1.1;
      letter-spacing: -.03em;
      margin-bottom: 6px;
    }
    .stat span{
      font-size: 13px;
      color: var(--muted);
    }

    .section{
      padding: clamp(24px, 4vw, 40px) 0;
      position: relative;
      z-index: 1;
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap: 16px;
      margin-bottom: 18px;
      flex-wrap:wrap;
    }
    .section-head h2{
      margin:0;
      font-size: clamp(24px, 2.4vw, 34px);
      line-height:1.15;
      font-weight: 800;
      letter-spacing: -.03em;
    }
    .section-head p{
      margin:0;
      color: var(--muted);
      max-width: 68ch;
      font-size: 15px;
    }

    .feature-layout{
      display:grid;
      grid-template-columns: 1.25fr .95fr;
      gap: 18px;
      align-items:start;
    }
    .feature-card{
      position: relative;
      overflow:hidden;
      border-radius: var(--radius);
      border: 1px solid rgba(255,255,255,.08);
      background: var(--card);
      box-shadow: var(--shadow);
    }
    .feature-card:hover{
      transform: translateY(-2px);
      border-color: rgba(62,230,166,.20);
    }
    .feature-card .media{
      position: relative;
      aspect-ratio: 16 / 9;
      overflow:hidden;
    }
    .feature-card .media::after{
      content:"";
      position:absolute;
      inset:0;
      background: linear-gradient(180deg, transparent 0%, rgba(7,12,11,.14) 56%, rgba(7,12,11,.84) 100%);
      pointer-events:none;
    }
    .feature-card .media img{
      width:100%;
      height:100%;
      object-fit: cover;
      transform: scale(1.01);
    }
    .feature-card .body{
      padding: 18px;
    }
    .feature-card h3{
      margin: 0 0 10px;
      font-size: 22px;
      line-height: 1.28;
      letter-spacing: -.02em;
    }
    .feature-card p{
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }
    .card-meta{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap: 8px;
      margin-top: 14px;
      color: #cfe3db;
      font-size: 12px;
    }
    .card-meta .dot{
      width: 4px;
      height: 4px;
      border-radius:50%;
      background: rgba(255,255,255,.35);
    }
    .stack-list{
      display:grid;
      gap: 12px;
    }
    .stack-item{
      display:grid;
      grid-template-columns: 108px 1fr;
      gap: 12px;
      align-items:stretch;
      padding: 12px;
      border-radius: 16px;
      background: linear-gradient(180deg, rgba(21,29,26,.94), rgba(14,20,18,.90));
      border: 1px solid rgba(255,255,255,.06);
      box-shadow: var(--shadow-soft);
    }
    .stack-item:hover{
      border-color: rgba(62,230,166,.18);
      transform: translateY(-1px);
    }
    .stack-item .thumb{
      position:relative;
      border-radius: 14px;
      overflow:hidden;
      min-height: 86px;
      background: rgba(255,255,255,.03);
    }
    .stack-item .thumb img{
      width:100%;
      height:100%;
      object-fit: cover;
    }
    .stack-item .text{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap: 8px;
      min-width:0;
    }
    .stack-item h3{
      margin: 0;
      font-size: 16px;
      line-height: 1.36;
      letter-spacing: -.01em;
    }
    .stack-item p{
      margin:0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.6;
    }
    .stack-item .tiny-meta{
      display:flex;
      gap: 8px;
      flex-wrap:wrap;
      font-size: 12px;
      color: #9cb3ac;
    }

    .topic-grid{
      display:grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
    }
    .topic-card{
      padding: 18px;
      border-radius: 18px;
      background:
        linear-gradient(180deg, rgba(21,30,27,.96), rgba(14,19,18,.96));
      border: 1px solid rgba(255,255,255,.07);
      box-shadow: var(--shadow-soft);
      min-height: 152px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap: 14px;
    }
    .topic-card:hover{
      transform: translateY(-2px);
      border-color: rgba(62,230,166,.18);
    }
    .topic-card .topic-top{
      display:flex;
      align-items:center;
      gap: 12px;
    }
    .topic-icon{
      width: 42px;
      height: 42px;
      border-radius: 14px;
      flex: 0 0 auto;
      background: linear-gradient(135deg, rgba(62,230,166,.92), rgba(33,200,210,.86));
      color: #07120f;
      display:grid;
      place-items:center;
      font-weight: 900;
      box-shadow: 0 10px 20px rgba(62,230,166,.14);
    }
    .topic-card h3{
      margin: 0;
      font-size: 17px;
      line-height: 1.35;
      letter-spacing: -.01em;
    }
    .topic-card p{
      margin: 0;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.65;
    }
    .topic-card .link-row{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap: 10px;
      color: #dcf5ec;
      font-size: 13px;
      font-weight: 700;
    }
    .topic-card .link-row span{
      color: var(--subtle);
      font-weight: 600;
    }

    .split-banner{
      background:
        linear-gradient(90deg, rgba(8,12,11,.88), rgba(8,12,11,.60)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      border-top: 1px solid rgba(255,255,255,.05);
      border-bottom: 1px solid rgba(255,255,255,.05);
    }
    .split-banner .wrap{
      display:grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 18px;
      align-items:center;
    }
    .split-copy{
      padding: clamp(14px, 2vw, 24px) 0;
    }
    .split-copy h2{
      margin:0 0 12px;
      font-size: clamp(24px, 2.6vw, 38px);
      line-height:1.12;
      letter-spacing: -.03em;
    }
    .split-copy p{
      margin:0;
      color:#d2dfda;
      max-width: 54ch;
    }
    .split-points{
      display:grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
    }
    .point-card{
      padding: 16px;
      border-radius: 16px;
      background: rgba(11,16,15,.82);
      border: 1px solid rgba(255,255,255,.06);
    }
    .point-card strong{
      display:block;
      margin-bottom: 6px;
      font-size: 15px;
      color: #fff;
    }
    .point-card span{
      color: var(--muted);
      font-size: 13px;
    }

    .editorial-grid{
      display:grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 18px;
      align-items:stretch;
    }
    .editorial-card{
      border-radius: var(--radius);
      overflow:hidden;
      border: 1px solid rgba(255,255,255,.08);
      background: linear-gradient(180deg, rgba(20,29,26,.96), rgba(12,18,16,.96));
      box-shadow: var(--shadow);
    }
    .editorial-card .cover{
      position:relative;
      aspect-ratio: 16 / 10;
      overflow:hidden;
    }
    .editorial-card .cover img{
      width:100%;
      height:100%;
      object-fit:cover;
    }
    .editorial-card .cover::after{
      content:"";
      position:absolute;
      inset:0;
      background: linear-gradient(180deg, rgba(4,8,7,.06), rgba(4,8,7,.78));
      pointer-events:none;
    }
    .editorial-card .content{
      padding: 18px;
    }
    .editorial-card h3{
      margin: 10px 0 10px;
      font-size: 21px;
      line-height: 1.32;
      letter-spacing: -.02em;
    }
    .editorial-card p{
      margin:0;
      color: var(--muted);
      font-size: 15px;
    }
    .list-bullets{
      display:grid;
      gap: 10px;
      margin-top: 14px;
      padding:0;
      list-style:none;
    }
    .list-bullets li{
      display:flex;
      gap: 10px;
      align-items:flex-start;
      color:#dce8e3;
      font-size: 14px;
      line-height: 1.6;
    }
    .list-bullets li::before{
      content:"";
      width: 8px;
      height: 8px;
      border-radius: 999px;
      margin-top: 7px;
      flex: 0 0 auto;
      background: linear-gradient(135deg, var(--accent), var(--accent-2));
      box-shadow: 0 0 0 4px rgba(62,230,166,.12);
    }
    .split-actions{
      margin-top: 18px;
      display:flex;
      gap: 12px;
      flex-wrap:wrap;
    }

    .data-grid{
      display:grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 12px;
    }
    .data-card{
      border-radius: 18px;
      overflow:hidden;
      border: 1px solid rgba(255,255,255,.08);
      background: linear-gradient(180deg, rgba(19,27,24,.96), rgba(11,16,15,.98));
      box-shadow: var(--shadow-soft);
    }
    .data-card .cover{
      aspect-ratio: 16 / 9;
      position:relative;
      overflow:hidden;
    }
    .data-card .cover img{
      width:100%;
      height:100%;
      object-fit:cover;
    }
    .data-card .body{
      padding: 16px;
    }
    .data-card h3{
      margin: 0 0 8px;
      font-size: 18px;
      line-height: 1.34;
    }
    .data-card p{
      margin:0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.65;
    }
    .data-lines{
      margin-top: 14px;
      display:grid;
      gap: 9px;
    }
    .data-line{
      display:flex;
      justify-content:space-between;
      gap: 10px;
      font-size: 13px;
      color: #dbe8e3;
      padding-bottom: 9px;
      border-bottom: 1px dashed rgba(255,255,255,.08);
    }
    .data-line:last-child{
      padding-bottom: 0;
      border-bottom:0;
    }
    .data-line span{
      color: var(--muted);
    }

    .faq-wrap{
      display:grid;
      grid-template-columns: 1fr;
      gap: 12px;
    }
    .faq-item{
      border-radius: 16px;
      border: 1px solid rgba(255,255,255,.08);
      background: linear-gradient(180deg, rgba(20,29,26,.92), rgba(12,18,16,.92));
      box-shadow: var(--shadow-soft);
      overflow:hidden;
    }
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding: 18px 18px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap: 16px;
      font-weight: 700;
      color:#f0f6f3;
      outline:none;
    }
    .faq-item summary::-webkit-details-marker{ display:none; }
    .faq-item summary::after{
      content:"+";
      width: 30px;
      height: 30px;
      border-radius: 10px;
      display:grid;
      place-items:center;
      background: rgba(255,255,255,.04);
      border: 1px solid rgba(255,255,255,.07);
      color: #dff4ee;
      flex: 0 0 auto;
    }
    .faq-item[open] summary::after{
      content:"–";
    }
    .faq-content{
      padding: 0 18px 18px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.75;
    }

    .cta{
      padding: 10px 0 46px;
    }
    .cta-box{
      border-radius: 24px;
      overflow:hidden;
      background:
        linear-gradient(135deg, rgba(62,230,166,.14), rgba(33,200,210,.08)),
        linear-gradient(180deg, rgba(20,29,26,.98), rgba(12,18,16,.98));
      border: 1px solid rgba(255,255,255,.08);
      box-shadow: var(--shadow);
      padding: clamp(22px, 4vw, 34px);
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap: 18px;
      flex-wrap:wrap;
    }
    .cta-box h2{
      margin:0 0 8px;
      font-size: clamp(22px, 2.4vw, 32px);
      line-height: 1.2;
      letter-spacing: -.02em;
    }
    .cta-box p{
      margin:0;
      color: var(--muted);
      max-width: 60ch;
    }
    .cta-actions{
      display:flex;
      gap: 12px;
      flex-wrap:wrap;
      align-items:center;
    }

    .site-footer{
      margin-top: 8px;
      border-top: 1px solid rgba(255,255,255,.06);
      background: linear-gradient(180deg, rgba(10,15,14,.92), rgba(7,11,10,.98));
      position: relative;
      z-index: 1;
    }
    .footer-inner{
      padding: 32px 0 24px;
      display:grid;
      grid-template-columns: 1.3fr .8fr .8fr .9fr;
      gap: 18px;
    }
    .footer-brand{
      display:flex;
      flex-direction:column;
      gap: 14px;
    }
    .footer-brand strong{
      font-size: 20px;
      letter-spacing: -.01em;
    }
    .footer-brand p{
      margin:0;
      color: var(--muted);
      max-width: 34ch;
      font-size: 14px;
    }
    .footer-col h3{
      margin:0 0 12px;
      font-size: 15px;
      color: #f2f7f5;
    }
    .footer-links{
      display:grid;
      gap: 10px;
    }
    .footer-links a{
      color: var(--muted);
      font-size: 14px;
    }
    .footer-links a:hover{
      color:#fff;
    }
    .footer-tags{
      display:flex;
      flex-wrap:wrap;
      gap: 8px;
    }
    .footer-bottom{
      border-top: 1px solid rgba(255,255,255,.06);
      padding: 14px 0 18px;
      color: #8ea29b;
      font-size: 12px;
      display:flex;
      justify-content:space-between;
      gap: 12px;
      flex-wrap:wrap;
    }

    .focus-ring:focus-visible,
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    summary:focus-visible{
      outline: 3px solid rgba(62,230,166,.34);
      outline-offset: 2px;
    }

    .text-accent{ color: var(--accent); }
    .text-warm{ color: #f0c27f; }
    .muted{ color: var(--muted); }

    @media (max-width: 1200px){
      .header-inner{
        grid-template-columns: auto 1fr auto;
      }
      .search-form{
        display:none;
      }
      .feature-layout,
      .editorial-grid,
      .split-banner .wrap{
        grid-template-columns: 1fr;
      }
      .topic-grid,
      .data-grid,
      .footer-inner{
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
      .hero-grid{
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 820px){
      .site-nav{
        display:none;
      }
      .menu-toggle{
        display:inline-flex;
      }
      .header-inner{
        grid-template-columns: auto 1fr auto;
      }
      .stats-row{
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
      .quick-grid,
      .split-points{
        grid-template-columns: 1fr;
      }
      .topic-grid,
      .data-grid,
      .footer-inner{
        grid-template-columns: 1fr;
      }
      .hero h1{
        max-width: 14ch;
      }
      .stack-item{
        grid-template-columns: 92px 1fr;
      }
    }
    @media (max-width: 560px){
      .container{
        width: min(100% - 20px, var(--container));
      }
      .site-note .container{
        padding: 8px 0;
      }
      .brand{
        font-size: 18px;
      }
      .brand-mark{
        width: 34px;
        height: 34px;
        border-radius: 12px;
      }
      .hero{
        padding-top: 22px;
      }
      .hero h1{
        font-size: 30px;
      }
      .hero p{
        font-size: 15px;
      }
      .btn{
        width: 100%;
      }
      .hero-actions,
      .cta-actions{
        width:100%;
      }
      .hero-actions .btn,
      .cta-actions .btn{
        flex:1 1 100%;
      }
      .stats-row{
        grid-template-columns: 1fr;
      }
      .stack-item{
        grid-template-columns: 84px 1fr;
      }
      .stack-item h3{
        font-size: 15px;
      }
      .faq-item summary{
        padding: 16px;
      }
      .faq-content{
        padding: 0 16px 16px;
      }
      .cta-box{
        border-radius: 20px;
      }
    }

/* roulang page: category1 */
:root{
      --bg-0:#0c0f12;
      --bg-1:#11161b;
      --bg-2:#171d23;
      --card:#161b21;
      --card-2:#1b222a;
      --line:rgba(255,255,255,.09);
      --line-2:rgba(255,255,255,.14);
      --text:#edf2f7;
      --muted:#a5b0bd;
      --soft:#cfd7df;
      --green:#48e08a;
      --green-2:#20c76c;
      --gold:#c89b4b;
      --gold-2:#f0b85a;
      --danger:#ff8a65;
      --shadow:0 18px 46px rgba(0,0,0,.34);
      --shadow-soft:0 12px 28px rgba(0,0,0,.24);
      --radius:18px;
      --radius-sm:14px;
      --radius-xs:12px;
      --container:1240px;
      --gap:24px;
      --gap-sm:14px;
      --gap-xs:10px;
      --trans:.24s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      line-height:1.7;
      background:
        radial-gradient(circle at top left, rgba(72,224,138,.09), transparent 32%),
        radial-gradient(circle at 90% 15%, rgba(200,155,75,.09), transparent 22%),
        linear-gradient(180deg, var(--bg-0), var(--bg-1) 38%, var(--bg-0));
      min-height:100vh;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(72,224,138,.26);color:#fff}
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }
    .site-wrap{
      position:relative;
    }
    .site-wrap::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:
        linear-gradient(transparent 0, transparent 98%, rgba(255,255,255,.02) 100%),
        linear-gradient(90deg, transparent 0, transparent 98%, rgba(255,255,255,.02) 100%);
      background-size:100% 64px, 64px 100%;
      opacity:.28;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.75), transparent 90%);
    }
    .topbar{
      position:relative;
      z-index:20;
      background:rgba(10,13,16,.82);
      border-bottom:1px solid var(--line);
      backdrop-filter:blur(10px);
    }
    .topbar .container{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      min-height:38px;
      font-size:13px;
      color:var(--muted);
      padding:8px 0;
    }
    .topbar strong{
      color:var(--soft);
      font-weight:600;
    }
    .notice{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
    }
    .notice-dot{
      width:8px;
      height:8px;
      border-radius:999px;
      background:var(--green);
      box-shadow:0 0 0 5px rgba(72,224,138,.12);
      flex:0 0 auto;
    }
    .notice span{
      opacity:.96;
    }
    .header{
      position:sticky;
      top:0;
      z-index:30;
      background:rgba(11,14,18,.76);
      backdrop-filter:blur(16px);
      border-bottom:1px solid var(--line);
    }
    .header-inner{
      display:flex;
      align-items:center;
      gap:18px;
      padding:16px 0;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:250px;
      flex:0 0 auto;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg, rgba(72,224,138,.18), rgba(200,155,75,.16));
      border:1px solid rgba(72,224,138,.24);
      color:var(--green);
      box-shadow:var(--shadow-soft);
      font-weight:800;
      letter-spacing:.04em;
    }
    .brand-copy{
      display:flex;
      flex-direction:column;
      gap:2px;
      min-width:0;
    }
    .brand-copy strong{
      font-size:16px;
      line-height:1.2;
      letter-spacing:.01em;
    }
    .brand-copy small{
      color:var(--muted);
      font-size:12px;
      line-height:1.4;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .search-form{
      flex:1 1 auto;
      display:flex;
      align-items:center;
      gap:10px;
      min-width:0;
      max-width:520px;
      margin-left:auto;
    }
    .search-field{
      position:relative;
      flex:1 1 auto;
      min-width:0;
    }
    .search-field input{
      width:100%;
      appearance:none;
      border:1px solid rgba(255,255,255,.1);
      background:rgba(255,255,255,.04);
      color:var(--text);
      height:46px;
      border-radius:999px;
      padding:0 50px 0 20px;
      outline:none;
      transition:border-color var(--trans), box-shadow var(--trans), background var(--trans);
    }
    .search-field input::placeholder{color:#8e99a6}
    .search-field input:focus{
      border-color:rgba(72,224,138,.45);
      box-shadow:0 0 0 4px rgba(72,224,138,.12);
      background:rgba(255,255,255,.06);
    }
    .search-icon{
      position:absolute;
      right:16px;
      top:50%;
      transform:translateY(-50%);
      width:18px;
      height:18px;
      opacity:.72;
      pointer-events:none;
    }
    .search-button{
      height:46px;
      padding:0 18px;
      border:1px solid rgba(72,224,138,.26);
      border-radius:999px;
      background:linear-gradient(135deg, rgba(72,224,138,.16), rgba(32,199,108,.1));
      color:var(--text);
      transition:transform var(--trans), background var(--trans), border-color var(--trans), box-shadow var(--trans);
      white-space:nowrap;
    }
    .search-button:hover,
    .search-button:focus-visible{
      transform:translateY(-1px);
      border-color:rgba(72,224,138,.48);
      box-shadow:0 12px 22px rgba(0,0,0,.22);
      outline:none;
    }
    .site-nav{
      display:flex;
      align-items:center;
      gap:8px;
      flex:0 0 auto;
      margin-left:12px;
      padding-left:12px;
      border-left:1px solid var(--line);
    }
    .nav-link{
      position:relative;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      height:42px;
      padding:0 16px;
      border-radius:999px;
      color:var(--soft);
      border:1px solid transparent;
      transition:background var(--trans), border-color var(--trans), color var(--trans), transform var(--trans);
      white-space:nowrap;
      font-size:14px;
    }
    .nav-link:hover,
    .nav-link:focus-visible{
      color:#fff;
      background:rgba(255,255,255,.04);
      border-color:rgba(255,255,255,.08);
      outline:none;
      transform:translateY(-1px);
    }
    .nav-link.active{
      color:#06130c;
      background:linear-gradient(135deg, var(--green), #74ef9f);
      border-color:transparent;
      font-weight:700;
      box-shadow:0 10px 24px rgba(72,224,138,.18);
    }
    .hero{
      position:relative;
      isolation:isolate;
      overflow:hidden;
      border-bottom:1px solid var(--line);
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg, rgba(8,10,12,.32), rgba(8,10,12,.74)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      z-index:-2;
      transform:scale(1.03);
    }
    .hero::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 75% 18%, rgba(72,224,138,.18), transparent 24%),
        radial-gradient(circle at 18% 26%, rgba(200,155,75,.12), transparent 22%);
      z-index:-1;
      pointer-events:none;
    }
    .hero-inner{
      padding:72px 0 42px;
      display:grid;
      grid-template-columns:minmax(0,1.35fr) minmax(320px,.95fr);
      gap:28px;
      align-items:end;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:34px;
      padding:0 14px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      color:#d8e1ea;
      border:1px solid rgba(255,255,255,.08);
      letter-spacing:.02em;
      font-size:13px;
      backdrop-filter:blur(8px);
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:999px;
      background:var(--green);
      box-shadow:0 0 0 5px rgba(72,224,138,.12);
    }
    .hero h1{
      margin:18px 0 14px;
      font-size:clamp(34px, 4.4vw, 60px);
      line-height:1.08;
      letter-spacing:-.02em;
      max-width:12em;
      text-wrap:balance;
    }
    .hero p{
      margin:0;
      color:#d7dfea;
      max-width:42rem;
      font-size:clamp(15px, 1.35vw, 18px);
      line-height:1.9;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:600;
      transition:transform var(--trans), box-shadow var(--trans), background var(--trans), border-color var(--trans), color var(--trans);
      white-space:nowrap;
    }
    .btn-primary{
      background:linear-gradient(135deg, var(--green), #78f0a8);
      color:#07150d;
      box-shadow:0 16px 30px rgba(72,224,138,.18);
    }
    .btn-primary:hover,
    .btn-primary:focus-visible{
      transform:translateY(-1px);
      box-shadow:0 18px 36px rgba(72,224,138,.22);
      outline:none;
    }
    .btn-secondary{
      background:rgba(255,255,255,.06);
      color:#edf2f7;
      border-color:rgba(255,255,255,.12);
    }
    .btn-secondary:hover,
    .btn-secondary:focus-visible{
      transform:translateY(-1px);
      border-color:rgba(72,224,138,.34);
      background:rgba(255,255,255,.08);
      outline:none;
    }
    .hero-panel{
      position:relative;
      background:linear-gradient(180deg, rgba(22,27,33,.88), rgba(15,19,24,.92));
      border:1px solid rgba(255,255,255,.08);
      border-radius:var(--radius);
      padding:22px;
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .hero-panel::before{
      content:"";
      position:absolute;
      inset:auto -18% -24% auto;
      width:180px;
      height:180px;
      background:radial-gradient(circle, rgba(72,224,138,.18), transparent 68%);
      pointer-events:none;
    }
    .hero-panel-head{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:14px;
      margin-bottom:18px;
    }
    .hero-panel-head h2{
      margin:0;
      font-size:18px;
      line-height:1.3;
    }
    .hero-panel-head .tag{
      flex:0 0 auto;
    }
    .hero-metrics{
      display:grid;
      grid-template-columns:repeat(2, minmax(0,1fr));
      gap:12px;
    }
    .metric{
      border-radius:16px;
      padding:14px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.07);
      min-height:96px;
    }
    .metric strong{
      display:block;
      font-size:20px;
      line-height:1.1;
      letter-spacing:-.02em;
      margin-bottom:6px;
    }
    .metric span{
      color:var(--muted);
      font-size:13px;
      line-height:1.6;
    }
    .metric .up{
      color:var(--green);
    }
    .metric .warm{
      color:var(--gold-2);
    }
    .panel-list{
      list-style:none;
      padding:0;
      margin:18px 0 0;
      display:grid;
      gap:10px;
    }
    .panel-list li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      color:#d4dbe3;
      font-size:14px;
    }
    .panel-list li::before{
      content:"";
      width:8px;
      height:8px;
      margin-top:.55em;
      border-radius:999px;
      background:var(--green);
      box-shadow:0 0 0 4px rgba(72,224,138,.12);
      flex:0 0 auto;
    }
    .section{
      padding:26px 0;
    }
    .stats-strip{
      margin-top:-24px;
      position:relative;
      z-index:3;
    }
    .stats-grid{
      display:grid;
      grid-template-columns:repeat(4, minmax(0,1fr));
      gap:16px;
    }
    .stat-card{
      background:linear-gradient(180deg, rgba(24,30,36,.95), rgba(18,23,28,.95));
      border:1px solid rgba(255,255,255,.08);
      border-radius:var(--radius-sm);
      padding:18px 18px 16px;
      box-shadow:var(--shadow-soft);
      transition:transform var(--trans), border-color var(--trans), box-shadow var(--trans);
      min-height:112px;
    }
    .stat-card:hover{
      transform:translateY(-2px);
      border-color:rgba(72,224,138,.22);
      box-shadow:0 16px 30px rgba(0,0,0,.28);
    }
    .stat-label{
      color:var(--muted);
      font-size:13px;
      margin-bottom:10px;
    }
    .stat-value{
      font-size:27px;
      line-height:1.05;
      font-weight:800;
      letter-spacing:-.03em;
      margin-bottom:8px;
    }
    .stat-note{
      color:#cfd7df;
      font-size:13px;
      line-height:1.6;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:18px;
    }
    .section-title{
      margin:0;
      font-size:28px;
      line-height:1.15;
      letter-spacing:-.02em;
    }
    .section-subtitle{
      margin:8px 0 0;
      color:var(--muted);
      font-size:15px;
      line-height:1.8;
      max-width:62ch;
    }
    .section-tools{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .search-tip{
      color:var(--muted);
      font-size:13px;
      white-space:nowrap;
    }
    .chips{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:10px;
    }
    .chip{
      appearance:none;
      border:1px solid rgba(255,255,255,.1);
      background:rgba(255,255,255,.04);
      color:var(--soft);
      border-radius:999px;
      min-height:38px;
      padding:0 14px;
      transition:transform var(--trans), border-color var(--trans), background var(--trans), color var(--trans);
    }
    .chip:hover,
    .chip:focus-visible{
      transform:translateY(-1px);
      border-color:rgba(72,224,138,.28);
      background:rgba(72,224,138,.08);
      color:#fff;
      outline:none;
    }
    .chip.active{
      background:rgba(72,224,138,.16);
      border-color:rgba(72,224,138,.42);
      color:#effbf3;
      box-shadow:0 10px 20px rgba(72,224,138,.1);
    }
    .content-grid{
      display:grid;
      grid-template-columns:minmax(0,1.4fr) minmax(0,.95fr);
      gap:18px;
      align-items:start;
    }
    .feature-card{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius);
      border:1px solid rgba(255,255,255,.08);
      background:linear-gradient(180deg, rgba(25,31,37,.95), rgba(18,22,27,.96));
      box-shadow:var(--shadow);
      min-height:100%;
    }
    .feature-image{
      position:relative;
      aspect-ratio:16/9;
      overflow:hidden;
    }
    .feature-image img{
      width:100%;
      height:100%;
      object-fit:cover;
      filter:saturate(1.02) contrast(1.04);
      transition:transform .45s ease;
    }
    .feature-card:hover .feature-image img{
      transform:scale(1.03);
    }
    .image-mask{
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(12,15,18,.18), rgba(12,15,18,.82));
    }
    .feature-body{
      padding:20px;
    }
    .tag-row{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-bottom:14px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      min-height:28px;
      padding:0 10px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.09);
      background:rgba(255,255,255,.04);
      color:#d9e1e9;
      font-size:12px;
      letter-spacing:.01em;
    }
    .tag.accent{
      background:rgba(72,224,138,.14);
      border-color:rgba(72,224,138,.2);
      color:#dff9e8;
    }
    .tag.warm{
      background:rgba(200,155,75,.14);
      border-color:rgba(200,155,75,.25);
      color:#f6e3bf;
    }
    .feature-body h3{
      margin:0 0 10px;
      font-size:22px;
      line-height:1.3;
      letter-spacing:-.02em;
    }
    .feature-body p{
      margin:0 0 16px;
      color:#ccd5de;
      font-size:15px;
      line-height:1.85;
    }
    .meta-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      color:var(--muted);
      font-size:13px;
    }
    .meta-row span{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding-right:10px;
      border-right:1px solid rgba(255,255,255,.08);
    }
    .meta-row span:last-child{border-right:none;padding-right:0}
    .list-stack{
      display:grid;
      gap:14px;
    }
    .story-card{
      display:grid;
      grid-template-columns:132px minmax(0,1fr);
      gap:14px;
      padding:12px;
      border-radius:var(--radius-sm);
      background:linear-gradient(180deg, rgba(24,29,35,.94), rgba(17,21,26,.96));
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow-soft);
      transition:transform var(--trans), border-color var(--trans);
      min-height:152px;
    }
    .story-card:hover{
      transform:translateY(-2px);
      border-color:rgba(72,224,138,.22);
    }
    .story-card img{
      width:100%;
      height:100%;
      object-fit:cover;
      border-radius:14px;
    }
    .story-copy{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      min-width:0;
      padding:2px 2px 2px 0;
    }
    .story-copy h4{
      margin:2px 0 8px;
      font-size:17px;
      line-height:1.4;
      letter-spacing:-.01em;
    }
    .story-copy p{
      margin:0 0 12px;
      color:var(--muted);
      font-size:14px;
      line-height:1.75;
    }
    .mini-link{
      color:var(--green);
      font-weight:600;
      font-size:13px;
      transition:opacity var(--trans);
    }
    .mini-link:hover{opacity:.82}
    .topic-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:16px;
    }
    .topic-card{
      position:relative;
      overflow:hidden;
      background:linear-gradient(180deg, rgba(25,31,37,.96), rgba(17,22,27,.98));
      border:1px solid rgba(255,255,255,.08);
      border-radius:var(--radius-sm);
      box-shadow:var(--shadow-soft);
      padding:18px;
      min-height:172px;
      transition:transform var(--trans), border-color var(--trans), box-shadow var(--trans);
    }
    .topic-card:hover{
      transform:translateY(-2px);
      border-color:rgba(200,155,75,.2);
      box-shadow:0 18px 34px rgba(0,0,0,.28);
    }
    .topic-card::before{
      content:"";
      position:absolute;
      inset:auto -24px -28px auto;
      width:120px;
      height:120px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(72,224,138,.14), transparent 68%);
      pointer-events:none;
    }
    .topic-card h4{
      margin:12px 0 10px;
      font-size:18px;
      line-height:1.35;
    }
    .topic-card p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.78;
    }
    .topic-card .icon{
      width:40px;
      height:40px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
      color:var(--green);
      font-weight:800;
    }
    .double-grid{
      display:grid;
      grid-template-columns:minmax(0,1fr) minmax(300px,.8fr);
      gap:18px;
      align-items:start;
    }
    .data-card,
    .info-card,
    .cta-card{
      background:linear-gradient(180deg, rgba(24,30,36,.96), rgba(16,20,25,.98));
      border:1px solid rgba(255,255,255,.08);
      border-radius:var(--radius);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .data-card{
      padding:20px;
    }
    .data-head{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:14px;
      margin-bottom:16px;
    }
    .data-head h3,
    .info-card h3,
    .cta-card h3{
      margin:0;
      font-size:22px;
      line-height:1.3;
    }
    .data-head p,
    .info-card p,
    .cta-card p{
      margin:8px 0 0;
      color:var(--muted);
      font-size:14px;
      line-height:1.8;
    }
    .timeline{
      display:grid;
      gap:12px;
      margin-top:16px;
    }
    .timeline-item{
      display:grid;
      grid-template-columns:88px minmax(0,1fr);
      gap:12px;
      align-items:start;
      padding:14px 0;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .timeline-item:first-child{
      border-top:none;
      padding-top:0;
    }
    .timeline-time{
      color:var(--green);
      font-weight:700;
      font-variant-numeric:tabular-nums;
      letter-spacing:.02em;
    }
    .timeline-copy strong{
      display:block;
      margin-bottom:4px;
      font-size:15px;
      line-height:1.5;
    }
    .timeline-copy span{
      color:var(--muted);
      font-size:14px;
      line-height:1.72;
    }
    .side-stack{
      display:grid;
      gap:18px;
    }
    .info-card{
      padding:20px;
    }
    .info-list{
      list-style:none;
      margin:14px 0 0;
      padding:0;
      display:grid;
      gap:12px;
    }
    .info-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#d8e0e8;
      font-size:14px;
      line-height:1.7;
    }
    .info-list li::before{
      content:"";
      width:8px;
      height:8px;
      margin-top:.58em;
      flex:0 0 auto;
      border-radius:50%;
      background:var(--gold);
      box-shadow:0 0 0 4px rgba(200,155,75,.12);
    }
    .rules-box{
      margin-top:16px;
      padding:14px;
      border-radius:16px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      color:#d8e0e8;
      font-size:13px;
      line-height:1.85;
    }
    .rules-box strong{
      color:#fff;
    }
    .faq-grid{
      display:grid;
      grid-template-columns:minmax(0,1fr) minmax(0,.86fr);
      gap:18px;
      align-items:start;
    }
    .faq-list{
      display:grid;
      gap:12px;
    }
    details.faq-item{
      border-radius:16px;
      background:linear-gradient(180deg, rgba(24,30,36,.95), rgba(17,21,26,.98));
      border:1px solid rgba(255,255,255,.08);
      overflow:hidden;
      box-shadow:var(--shadow-soft);
    }
    details.faq-item[open]{
      border-color:rgba(72,224,138,.18);
    }
    details.faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:18px 18px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      font-weight:600;
      color:#eef3f8;
      outline:none;
    }
    details.faq-item summary::-webkit-details-marker{display:none}
    details.faq-item summary::after{
      content:"+";
      width:28px;
      height:28px;
      border-radius:999px;
      display:grid;
      place-items:center;
      background:rgba(255,255,255,.06);
      color:var(--soft);
      transition:transform var(--trans), background var(--trans), color var(--trans);
      flex:0 0 auto;
    }
    details.faq-item[open] summary::after{
      content:"–";
      background:rgba(72,224,138,.14);
      color:#dff8e8;
    }
    .faq-content{
      padding:0 18px 18px;
      color:var(--muted);
      font-size:14px;
      line-height:1.85;
    }
    .faq-side{
      position:sticky;
      top:112px;
    }
    .faq-side .cover{
      border-radius:var(--radius);
      overflow:hidden;
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
      background:linear-gradient(180deg, rgba(24,30,36,.96), rgba(16,20,25,.98));
    }
    .faq-side img{
      width:100%;
      aspect-ratio:4/3;
      object-fit:cover;
    }
    .faq-side .cover-copy{
      padding:18px;
    }
    .faq-side h3{
      margin:0 0 10px;
      font-size:20px;
      line-height:1.35;
    }
    .faq-side p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.8;
    }
    .cta-card{
      padding:22px;
      background:
        radial-gradient(circle at 15% 20%, rgba(72,224,138,.16), transparent 24%),
        radial-gradient(circle at 86% 15%, rgba(200,155,75,.12), transparent 20%),
        linear-gradient(180deg, rgba(24,30,36,.98), rgba(15,19,24,.98));
    }
    .cta-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
    }
    .cta-copy{
      max-width:70ch;
    }
    .cta-copy h3{
      font-size:24px;
    }
    .cta-copy p{
      margin-top:10px;
    }
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
    }
    .site-footer{
      margin-top:34px;
      padding:34px 0 20px;
      border-top:1px solid var(--line);
      background:linear-gradient(180deg, rgba(13,16,20,.75), rgba(9,11,14,.95));
    }
    .footer-inner{
      display:grid;
      grid-template-columns:1.3fr .75fr .75fr .75fr;
      gap:24px;
      align-items:start;
    }
    .footer-brand strong{
      display:block;
      font-size:20px;
      margin-bottom:10px;
    }
    .footer-brand p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.85;
      max-width:36ch;
    }
    .footer-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:14px;
    }
    .footer-col h3{
      margin:0 0 12px;
      font-size:15px;
      color:#f1f5f9;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:var(--muted);
      font-size:14px;
      transition:color var(--trans), transform var(--trans);
    }
    .footer-links a:hover,
    .footer-links a:focus-visible{
      color:#fff;
      transform:translateX(2px);
      outline:none;
    }
    .footer-bottom{
      margin-top:26px;
      padding-top:16px;
      border-top:1px solid rgba(255,255,255,.08);
      display:flex;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
      color:#93a0ad;
      font-size:13px;
    }
    .section-divider{
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(255,255,255,.12), transparent);
      margin:8px 0;
    }
    .hidden{
      display:none !important;
    }
    .focus-outline:focus-visible{
      outline:2px solid rgba(72,224,138,.48);
      outline-offset:3px;
    }
    @media (max-width: 1180px){
      .header-inner{
        flex-wrap:wrap;
      }
      .brand{
        min-width:220px;
      }
      .search-form{
        order:3;
        width:100%;
        max-width:none;
        margin-left:0;
      }
      .site-nav{
        margin-left:auto;
      }
      .hero-inner{
        grid-template-columns:1fr;
        padding:52px 0 36px;
      }
      .hero h1{
        max-width:14em;
      }
      .content-grid,
      .double-grid,
      .faq-grid{
        grid-template-columns:1fr;
      }
      .faq-side{
        position:static;
      }
      .footer-inner{
        grid-template-columns:repeat(2, minmax(0,1fr));
      }
    }
    @media (max-width: 900px){
      .stats-grid{
        grid-template-columns:repeat(2, minmax(0,1fr));
      }
      .topic-grid{
        grid-template-columns:repeat(2, minmax(0,1fr));
      }
      .section-head{
        flex-direction:column;
        align-items:flex-start;
      }
      .section-tools{
        justify-content:flex-start;
      }
    }
    @media (max-width: 720px){
      .topbar .container{
        flex-direction:column;
        align-items:flex-start;
      }
      .header-inner{
        gap:12px;
      }
      .brand{
        min-width:0;
      }
      .site-nav{
        width:100%;
        overflow:auto;
        padding-left:0;
        margin-left:0;
        border-left:none;
        padding-top:6px;
      }
      .hero{
        background-position:center;
      }
      .hero h1{
        font-size:clamp(28px, 9vw, 42px);
      }
      .hero-actions{
        flex-direction:column;
        align-items:stretch;
      }
      .btn{
        width:100%;
      }
      .stats-grid,
      .topic-grid{
        grid-template-columns:1fr;
      }
      .story-card{
        grid-template-columns:1fr;
      }
      .story-card img{
        aspect-ratio:16/9;
      }
      .timeline-item{
        grid-template-columns:1fr;
        gap:6px;
      }
      .footer-inner{
        grid-template-columns:1fr;
      }
      .footer-bottom{
        flex-direction:column;
      }
    }
    @media (max-width: 520px){
      .container{
        width:min(var(--container), calc(100% - 22px));
      }
      .hero-inner{
        padding:42px 0 28px;
      }
      .hero-panel,
      .stat-card,
      .feature-body,
      .data-card,
      .info-card,
      .cta-card{
        padding:16px;
      }
      .hero-panel-head{
        flex-direction:column;
      }
      .hero-metrics{
        grid-template-columns:1fr;
      }
      .section-title{
        font-size:24px;
      }
      .section-subtitle{
        font-size:14px;
      }
      .chip{
        min-height:36px;
        padding:0 12px;
      }
      .search-field input,
      .search-button{
        height:44px;
      }
    }