/* roulang page: index */
:root{
      --bg:#0d0f10;
      --bg-2:#141819;
      --panel:#191f20;
      --panel-2:#202728;
      --panel-soft:rgba(31,39,40,.78);
      --text:#f3f7f4;
      --muted:#9facaa;
      --weak:#74817f;
      --line:rgba(189,255,230,.13);
      --line-strong:rgba(68,255,190,.32);
      --brand:#42f5b3;
      --brand-2:#9bff54;
      --cyan:#64e9ff;
      --purple:#a891ff;
      --amber:#ffb84c;
      --danger:#ff7a66;
      --shadow:0 20px 60px rgba(0,0,0,.32);
      --shadow-soft:0 14px 34px rgba(0,0,0,.22);
      --radius-xl:24px;
      --radius-lg:18px;
      --radius-md:14px;
      --radius-sm:10px;
      --container:1180px;
      --nav-h:74px;
      --ease:cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 16% 3%, rgba(66,245,179,.16), transparent 30%),
        radial-gradient(circle at 84% 14%, rgba(168,145,255,.11), transparent 28%),
        linear-gradient(180deg,#0d0f10 0%,#101313 42%,#0b0d0d 100%);
      line-height:1.65;
      min-height:100vh;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.28;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom, black 0%, transparent 80%);
      z-index:-2;
    }
    body:after{
      content:"";
      position:fixed;
      inset:auto -20% 12% -20%;
      height:220px;
      pointer-events:none;
      background:linear-gradient(90deg, transparent, rgba(66,245,179,.08), rgba(100,233,255,.07), transparent);
      transform:skewY(-8deg);
      filter:blur(2px);
      z-index:-1;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    .container{
      width:min(var(--container), calc(100% - 40px));
      margin:0 auto;
    }
    .skip-link{
      position:absolute;
      left:-999px;
      top:0;
      background:var(--brand);
      color:#06100c;
      padding:10px 14px;
      border-radius:0 0 10px 0;
      z-index:99;
    }
    .skip-link:focus{left:0}
    .topbar{
      background:#080a0a;
      color:#c8d8d3;
      border-bottom:1px solid rgba(255,255,255,.06);
      font-size:13px;
    }
    .topbar .container{
      min-height:34px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
    }
    .topbar strong{color:var(--brand);font-weight:700}
    .risk-dot{
      width:7px;height:7px;border-radius:50%;
      background:var(--amber);
      display:inline-block;
      margin-right:8px;
      box-shadow:0 0 12px rgba(255,184,76,.6);
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:blur(18px);
      background:rgba(13,15,16,.84);
      border-bottom:1px solid var(--line);
    }
    .nav-wrap{
      height:var(--nav-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
    }
    .brand-mark{
      width:42px;height:42px;
      border-radius:14px;
      background:
        linear-gradient(135deg, rgba(66,245,179,.95), rgba(155,255,84,.75)),
        radial-gradient(circle at 20% 20%, #fff, transparent 32%);
      color:#07110d;
      display:grid;
      place-items:center;
      font-weight:900;
      letter-spacing:-.06em;
      box-shadow:0 0 28px rgba(66,245,179,.25);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.15;
    }
    .brand-text b{
      font-size:16px;
      letter-spacing:.01em;
    }
    .brand-text span{
      font-size:12px;
      color:var(--muted);
      margin-top:3px;
    }
    .nav-menu{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      flex:1;
    }
    .nav-menu a{
      color:#cfe1dc;
      padding:10px 14px;
      border-radius:999px;
      font-size:14px;
      transition:.22s var(--ease);
      border:1px solid transparent;
    }
    .nav-menu a:hover,
    .nav-menu a:focus{
      color:#fff;
      border-color:var(--line-strong);
      background:rgba(66,245,179,.07);
      outline:none;
    }
    .nav-menu a.active{
      color:#07110d;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      font-weight:800;
    }
    .nav-action{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .mini-status{
      display:flex;
      align-items:center;
      gap:8px;
      padding:9px 12px;
      border:1px solid var(--line);
      border-radius:999px;
      color:#d9ebe5;
      background:rgba(255,255,255,.035);
      font-size:13px;
      white-space:nowrap;
    }
    .status-light{
      width:8px;height:8px;border-radius:50%;
      background:var(--brand);
      box-shadow:0 0 14px rgba(66,245,179,.8);
    }
    .menu-toggle{
      display:none;
      width:42px;height:42px;
      border-radius:12px;
      color:var(--text);
      background:var(--panel);
      border:1px solid var(--line);
    }
    .menu-toggle span{
      display:block;
      width:18px;height:2px;
      margin:4px auto;
      background:currentColor;
      border-radius:4px;
      transition:.2s;
    }
    main{overflow:hidden}
    .hero{
      position:relative;
      min-height:720px;
      display:flex;
      align-items:center;
      padding:88px 0 70px;
      background:
        linear-gradient(90deg,rgba(8,10,10,.92) 0%,rgba(8,10,10,.66) 42%,rgba(8,10,10,.9) 100%),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-bottom:1px solid var(--line);
    }
    .hero:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 18% 30%, rgba(66,245,179,.22), transparent 28%),
        linear-gradient(115deg, rgba(255,255,255,.07) 0 1px, transparent 1px 100%);
      background-size:auto, 28px 28px;
      opacity:.72;
      pointer-events:none;
    }
    .hero .container{position:relative;z-index:1}
    .hero-shell{
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:44px;
      align-items:end;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:9px;
      padding:8px 12px;
      border:1px solid rgba(66,245,179,.28);
      border-radius:999px;
      background:rgba(66,245,179,.08);
      color:#dffef2;
      font-size:13px;
      margin-bottom:18px;
    }
    .eyebrow i{
      width:8px;height:8px;border-radius:50%;
      background:var(--brand);
      box-shadow:0 0 16px rgba(66,245,179,.8);
    }
    h1{
      margin:0;
      font-size:clamp(40px,6vw,76px);
      line-height:1.03;
      letter-spacing:-.055em;
      max-width:900px;
    }
    .hero-lead{
      max-width:690px;
      margin:22px 0 0;
      color:#d0ded9;
      font-size:18px;
      line-height:1.85;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-top:32px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:48px;
      padding:0 18px;
      border-radius:999px;
      font-weight:800;
      transition:.22s var(--ease);
      border:1px solid transparent;
      user-select:none;
      white-space:nowrap;
    }
    .btn-primary{
      color:#06100c;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 14px 34px rgba(66,245,179,.22);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 42px rgba(66,245,179,.3)}
    .btn-secondary{
      color:#e9fff7;
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.16);
    }
    .btn-secondary:hover{transform:translateY(-2px);border-color:var(--line-strong);background:rgba(66,245,179,.08)}
    .btn:focus{outline:3px solid rgba(66,245,179,.28);outline-offset:3px}
    .hero-strip{
      margin-top:42px;
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      max-width:700px;
    }
    .metric{
      padding:16px;
      border-radius:var(--radius-md);
      background:rgba(20,24,25,.78);
      border:1px solid var(--line);
      box-shadow:var(--shadow-soft);
    }
    .metric .num{
      display:block;
      font-size:30px;
      font-weight:900;
      letter-spacing:-.04em;
      color:var(--brand);
      line-height:1;
    }
    .metric small{
      display:block;
      color:var(--muted);
      margin-top:8px;
      font-size:13px;
    }
    .live-panel{
      align-self:stretch;
      border:1px solid rgba(255,255,255,.14);
      border-radius:var(--radius-xl);
      background:linear-gradient(180deg,rgba(31,39,40,.88),rgba(18,22,22,.86));
      box-shadow:var(--shadow);
      overflow:hidden;
      backdrop-filter:blur(12px);
    }
    .panel-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:18px 20px;
      border-bottom:1px solid var(--line);
    }
    .panel-head b{font-size:17px}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:5px 9px;
      border-radius:999px;
      font-size:12px;
      font-weight:800;
      border:1px solid transparent;
    }
    .badge.event{background:rgba(100,233,255,.12);color:#b9f6ff;border-color:rgba(100,233,255,.25)}
    .badge.score{background:rgba(66,245,179,.12);color:#c9ffec;border-color:rgba(66,245,179,.25)}
    .badge.rule{background:rgba(168,145,255,.12);color:#dfd7ff;border-color:rgba(168,145,255,.25)}
    .badge.warn{background:rgba(255,184,76,.12);color:#ffd99a;border-color:rgba(255,184,76,.25)}
    .match-list{padding:10px}
    .match-row{
      display:grid;
      grid-template-columns:1fr auto 1fr;
      gap:12px;
      align-items:center;
      padding:15px 12px;
      border-radius:15px;
      transition:.2s var(--ease);
    }
    .match-row + .match-row{margin-top:6px}
    .match-row:hover{background:rgba(255,255,255,.045)}
    .team{
      color:#e8f6f1;
      font-weight:800;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .team.right{text-align:right}
    .score-box{
      min-width:92px;
      text-align:center;
      font-size:22px;
      font-weight:950;
      color:#07110d;
      border-radius:12px;
      padding:5px 9px;
      background:linear-gradient(135deg,var(--brand),var(--cyan));
      letter-spacing:.02em;
    }
    .match-note{
      padding:16px 20px 20px;
      color:var(--muted);
      font-size:14px;
      border-top:1px solid var(--line);
    }
    .section{
      padding:88px 0;
    }
    .section.tight{padding:66px 0}
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:30px;
    }
    .section-title{
      margin:0;
      font-size:clamp(28px,3.3vw,44px);
      line-height:1.14;
      letter-spacing:-.04em;
    }
    .section-desc{
      margin:10px 0 0;
      color:var(--muted);
      max-width:650px;
    }
    .keyword-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      padding:24px;
      border-radius:var(--radius-xl);
      background:linear-gradient(180deg,rgba(32,39,40,.68),rgba(20,24,25,.72));
      border:1px solid var(--line);
    }
    .chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 14px;
      border-radius:999px;
      background:rgba(255,255,255,.045);
      border:1px solid rgba(255,255,255,.1);
      color:#d9e9e4;
      transition:.2s var(--ease);
      font-size:14px;
    }
    .chip:before{
      content:"";
      width:7px;height:7px;border-radius:50%;
      background:var(--brand);
      opacity:.8;
    }
    .chip:hover{
      transform:translateY(-2px);
      border-color:var(--line-strong);
      background:rgba(66,245,179,.08);
      color:#fff;
    }
    .feature-grid{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:22px;
      align-items:stretch;
    }
    .story-card{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-xl);
      background:var(--panel);
      border:1px solid var(--line);
      box-shadow:var(--shadow-soft);
      transition:.24s var(--ease);
    }
    .story-card:hover{transform:translateY(-4px);border-color:var(--line-strong)}
    .story-card.main{min-height:456px}
    .story-card img{
      width:100%;
      height:100%;
      min-height:240px;
      object-fit:cover;
      filter:saturate(.95) contrast(1.05);
    }
    .story-card.main img{position:absolute;inset:0}
    .story-card:after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,transparent 10%,rgba(8,10,10,.34) 45%,rgba(8,10,10,.92) 100%);
      pointer-events:none;
    }
    .story-content{
      position:absolute;
      left:0;right:0;bottom:0;
      z-index:1;
      padding:26px;
    }
    .story-content h3{
      margin:14px 0 8px;
      font-size:clamp(24px,3vw,36px);
      line-height:1.18;
      letter-spacing:-.03em;
    }
    .story-content p{
      margin:0;
      color:#cddbd6;
      max-width:640px;
    }
    .side-stack{
      display:grid;
      gap:22px;
    }
    .mini-card{
      display:grid;
      grid-template-columns:150px 1fr;
      gap:16px;
      padding:14px;
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:rgba(32,39,40,.68);
      transition:.22s var(--ease);
    }
    .mini-card:hover{transform:translateY(-3px);border-color:var(--line-strong);background:rgba(36,45,45,.82)}
    .mini-card img{
      width:150px;
      height:122px;
      object-fit:cover;
      border-radius:14px;
    }
    .mini-card h3{
      margin:9px 0 6px;
      font-size:19px;
      line-height:1.3;
    }
    .mini-card p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:12px;
      color:var(--weak);
      font-size:13px;
    }
    .board{
      border-radius:var(--radius-xl);
      border:1px solid var(--line);
      background:linear-gradient(180deg,rgba(25,31,32,.82),rgba(16,19,19,.82));
      overflow:hidden;
    }
    .board-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
    }
    .board-item{
      padding:24px;
      min-height:160px;
      border-right:1px solid var(--line);
      border-bottom:1px solid var(--line);
    }
    .board-item:nth-child(even){border-right:0}
    .board-item:nth-last-child(-n+2){border-bottom:0}
    .board-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:14px;
    }
    .board-title{
      font-size:18px;
      font-weight:900;
    }
    .board-number{
      font-size:34px;
      font-weight:950;
      letter-spacing:-.05em;
      color:var(--brand);
      line-height:1;
    }
    .board-item p{
      color:var(--muted);
      margin:8px 0 0;
    }
    .category-area{
      display:grid;
      grid-template-columns:.78fr 1.22fr;
      gap:26px;
      align-items:center;
    }
    .category-visual{
      position:relative;
      min-height:410px;
      border-radius:var(--radius-xl);
      overflow:hidden;
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    }
    .category-visual:before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,rgba(8,10,10,.08),rgba(8,10,10,.82));
    }
    .visual-caption{
      position:absolute;
      left:22px;right:22px;bottom:22px;
      padding:18px;
      border-radius:18px;
      background:rgba(13,15,16,.72);
      border:1px solid rgba(255,255,255,.13);
      backdrop-filter:blur(12px);
    }
    .visual-caption strong{
      display:block;
      font-size:24px;
      line-height:1.2;
      margin-bottom:8px;
    }
    .visual-caption span{color:var(--muted)}
    .category-cards{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:16px;
    }
    .entry-card{
      padding:22px;
      border-radius:var(--radius-lg);
      background:rgba(32,39,40,.68);
      border:1px solid var(--line);
      min-height:154px;
      transition:.22s var(--ease);
    }
    .entry-card:hover{
      transform:translateY(-4px);
      border-color:var(--line-strong);
      box-shadow:0 18px 38px rgba(0,0,0,.2);
    }
    .entry-icon{
      width:42px;height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#07110d;
      background:linear-gradient(135deg,var(--brand),var(--cyan));
      font-weight:950;
      margin-bottom:14px;
    }
    .entry-card h3{
      margin:0 0 6px;
      font-size:19px;
    }
    .entry-card p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .proof-band{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
    }
    .proof{
      padding:20px;
      border-radius:var(--radius-lg);
      background:rgba(255,255,255,.045);
      border:1px solid var(--line);
    }
    .proof b{
      display:block;
      font-size:28px;
      color:var(--brand);
      line-height:1;
      margin-bottom:10px;
    }
    .proof span{color:var(--muted);font-size:14px}
    .notice{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
    }
    .notice-card{
      padding:24px;
      border-radius:var(--radius-lg);
      background:linear-gradient(180deg,rgba(32,39,40,.76),rgba(18,22,22,.76));
      border:1px solid var(--line);
    }
    .notice-card.warn{border-color:rgba(255,184,76,.22);background:linear-gradient(180deg,rgba(75,50,17,.34),rgba(18,22,22,.76))}
    .notice-card h3{margin:0 0 10px;font-size:22px}
    .notice-card p{margin:0;color:var(--muted)}
    .faq-wrap{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:28px;
      align-items:start;
    }
    .faq-intro{
      position:sticky;
      top:100px;
      padding:28px;
      border-radius:var(--radius-xl);
      background:rgba(32,39,40,.68);
      border:1px solid var(--line);
    }
    .faq-intro h2{margin:0 0 12px;font-size:34px;line-height:1.2;letter-spacing:-.03em}
    .faq-intro p{margin:0;color:var(--muted)}
    .faq-list{display:grid;gap:12px}
    .faq-item{
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:rgba(25,31,32,.76);
      overflow:hidden;
    }
    .faq-question{
      width:100%;
      min-height:62px;
      padding:0 18px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      color:var(--text);
      background:transparent;
      text-align:left;
      font-weight:850;
    }
    .faq-question:focus{outline:3px solid rgba(66,245,179,.25);outline-offset:-3px}
    .faq-question .plus{
      width:28px;height:28px;border-radius:50%;
      display:grid;place-items:center;
      background:rgba(66,245,179,.1);
      color:var(--brand);
      flex:none;
      transition:.2s;
    }
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .24s var(--ease);
    }
    .faq-answer p{
      margin:0;
      padding:0 18px 18px;
      color:var(--muted);
    }
    .faq-item.open .faq-answer{max-height:240px}
    .faq-item.open .plus{transform:rotate(45deg);background:var(--brand);color:#07110d}
    .cta{
      padding:0 0 88px;
    }
    .cta-box{
      position:relative;
      overflow:hidden;
      border-radius:28px;
      padding:42px;
      background:
        linear-gradient(100deg,rgba(66,245,179,.17),rgba(168,145,255,.1)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      border:1px solid rgba(255,255,255,.16);
      box-shadow:var(--shadow);
    }
    .cta-box:before{
      content:"";
      position:absolute;inset:0;
      background:linear-gradient(90deg,rgba(8,10,10,.88),rgba(8,10,10,.58),rgba(8,10,10,.88));
    }
    .cta-content{
      position:relative;
      z-index:1;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .cta h2{
      margin:0;
      font-size:clamp(28px,4vw,46px);
      line-height:1.12;
      letter-spacing:-.04em;
    }
    .cta p{
      margin:10px 0 0;
      color:#d0ded9;
      max-width:650px;
    }
    .site-footer{
      border-top:1px solid var(--line);
      background:#080a0a;
      padding:54px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.5fr .8fr .9fr 1.15fr;
      gap:28px;
      align-items:start;
    }
    .footer-logo{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:14px;
    }
    .footer-logo .brand-mark{width:38px;height:38px;border-radius:13px}
    .footer-logo b{font-size:18px}
    .footer-col h3{
      margin:0 0 14px;
      font-size:15px;
      color:#fff;
    }
    .footer-col p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:var(--muted);
      font-size:14px;
      transition:.2s;
    }
    .footer-links a:hover{color:var(--brand)}
    .footer-bottom{
      margin-top:34px;
      padding-top:20px;
      border-top:1px solid rgba(255,255,255,.08);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      color:var(--weak);
      font-size:13px;
    }
    .footer-bottom strong{color:var(--amber);font-weight:700}
    @media (max-width: 1100px){
      .hero-shell{grid-template-columns:1fr;align-items:start}
      .live-panel{max-width:780px}
      .feature-grid,.category-area,.faq-wrap{grid-template-columns:1fr}
      .faq-intro{position:static}
      .proof-band{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 767px){
      :root{--nav-h:66px}
      .container{width:min(100% - 28px, var(--container))}
      .topbar .container{align-items:flex-start;flex-direction:column;padding:8px 0;gap:4px}
      .nav-wrap{gap:12px}
      .brand-text b{font-size:14px}
      .brand-text span{display:none}
      .mini-status{display:none}
      .menu-toggle{display:block}
      .nav-menu{
        position:absolute;
        left:14px;right:14px;top:calc(var(--nav-h) + 8px);
        display:none;
        flex-direction:column;
        align-items:stretch;
        padding:12px;
        border:1px solid var(--line);
        border-radius:18px;
        background:rgba(13,15,16,.96);
        box-shadow:var(--shadow);
      }
      .nav-menu.open{display:flex}
      .nav-menu a{width:100%;text-align:center;border-radius:13px}
      .hero{min-height:auto;padding:58px 0 46px}
      h1{font-size:40px}
      .hero-lead{font-size:16px}
      .hero-actions{gap:10px}
      .btn{width:100%;min-height:48px}
      .hero-strip{grid-template-columns:1fr}
      .section{padding:58px 0}
      .section.tight{padding:48px 0}
      .section-head{display:block}
      .feature-grid{gap:16px}
      .story-card.main{min-height:390px}
      .story-content{padding:20px}
      .mini-card{grid-template-columns:1fr}
      .mini-card img{width:100%;height:190px}
      .board-grid{grid-template-columns:1fr}
      .board-item,.board-item:nth-child(even),.board-item:nth-last-child(-n+2){border-right:0;border-bottom:1px solid var(--line)}
      .board-item:last-child{border-bottom:0}
      .category-visual{min-height:330px}
      .category-cards{grid-template-columns:1fr}
      .proof-band,.notice{grid-template-columns:1fr}
      .faq-intro h2{font-size:28px}
      .cta{padding-bottom:58px}
      .cta-box{padding:26px}
      .cta-content{display:block}
      .cta-content .hero-actions{margin-top:22px}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:8px}
    }
    @media (max-width: 520px){
      .brand-mark{width:38px;height:38px}
      .hero{background-position:center top}
      .match-row{grid-template-columns:1fr;gap:8px}
      .team.right{text-align:left}
      .score-box{width:max-content}
      .keyword-cloud{padding:18px}
      .chip{width:100%;justify-content:flex-start}
      .section-title{font-size:30px}
      .visual-caption{left:14px;right:14px;bottom:14px}
    }

/* roulang page: category1 */
:root{
      --bg:#0b0d0c;
      --bg-soft:#111412;
      --panel:#171b18;
      --panel-2:#1d221f;
      --card:#151916;
      --muted-card:#202621;
      --line:rgba(199,255,226,.14);
      --line-strong:rgba(83,255,176,.34);
      --text:#eef8f1;
      --text-soft:#c6d5cc;
      --text-muted:#8fa099;
      --brand:#53ffb0;
      --brand-2:#7ae7ff;
      --purple:#a58bff;
      --amber:#ffbe66;
      --danger:#ff8c6e;
      --shadow:0 22px 60px rgba(0,0,0,.34);
      --shadow-soft:0 14px 34px rgba(0,0,0,.24);
      --radius:18px;
      --radius-sm:12px;
      --max:1180px;
      --nav-h:72px;
      --ease:.22s ease;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      min-height:100vh;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 18% 8%,rgba(83,255,176,.12),transparent 30%),
        radial-gradient(circle at 82% 12%,rgba(122,231,255,.08),transparent 28%),
        linear-gradient(180deg,#090b0a 0%,#0b0d0c 45%,#101310 100%);
      line-height:1.72;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.16;
      background-image:
        linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
      background-size:36px 36px;
      mask-image:linear-gradient(to bottom,rgba(0,0,0,.75),transparent 82%);
      z-index:-1;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer;border:0;background:none;color:inherit}
    .container{width:min(var(--max),calc(100% - 40px));margin:0 auto}
    .top-alert{
      border-bottom:1px solid var(--line);
      background:rgba(12,15,13,.78);
      backdrop-filter:blur(14px);
      color:var(--text-soft);
      font-size:13px;
    }
    .top-alert .container{
      min-height:36px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .alert-pill{
      color:#0b0d0c;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      border-radius:999px;
      padding:3px 10px;
      font-weight:800;
      white-space:nowrap;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(11,13,12,.82);
      border-bottom:1px solid var(--line);
      backdrop-filter:blur(18px);
    }
    .header-inner{
      height:var(--nav-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .site-logo{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
    }
    .brand-mark{
      width:42px;
      height:42px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:13px;
      color:#07100b;
      font-weight:950;
      letter-spacing:-.04em;
      background:linear-gradient(135deg,var(--brand),#d5ffe8 55%,var(--brand-2));
      box-shadow:0 0 0 1px rgba(255,255,255,.18),0 12px 28px rgba(83,255,176,.2);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.15;
    }
    .brand-text b{font-size:17px;letter-spacing:.02em}
    .brand-text span{font-size:12px;color:var(--text-muted);margin-top:3px}
    .nav-menu{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:6px;
      padding:6px;
      border:1px solid var(--line);
      border-radius:999px;
      background:rgba(255,255,255,.03);
    }
    .nav-menu a{
      padding:9px 16px;
      border-radius:999px;
      color:var(--text-soft);
      font-size:14px;
      transition:background var(--ease),color var(--ease),box-shadow var(--ease),transform var(--ease);
    }
    .nav-menu a:hover,
    .nav-menu a:focus-visible{
      color:var(--text);
      background:rgba(83,255,176,.09);
      outline:none;
      box-shadow:inset 0 0 0 1px rgba(83,255,176,.2);
    }
    .nav-menu a.active{
      color:#06100a;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      font-weight:800;
    }
    .header-action{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:max-content;
    }
    .mini-status{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 12px;
      border-radius:999px;
      color:var(--text-soft);
      background:rgba(255,255,255,.04);
      border:1px solid var(--line);
      font-size:13px;
    }
    .mini-status::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--brand);
      box-shadow:0 0 14px var(--brand);
    }
    .menu-toggle{
      display:none;
      width:42px;
      height:42px;
      border-radius:12px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.04);
    }
    .menu-toggle span{
      display:block;
      width:18px;
      height:2px;
      margin:4px auto;
      background:var(--text);
      border-radius:2px;
      transition:var(--ease);
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid var(--line-strong);
      color:var(--text);
      background:rgba(83,255,176,.08);
      transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease);
      font-weight:750;
    }
    .btn:hover,
    .btn:focus-visible{
      transform:translateY(-2px);
      background:rgba(83,255,176,.14);
      border-color:rgba(83,255,176,.62);
      box-shadow:0 14px 28px rgba(83,255,176,.12);
      outline:none;
    }
    .btn-primary{
      color:#07100b;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      border-color:transparent;
    }
    .btn-ghost{background:rgba(255,255,255,.04)}
    .section{padding:76px 0}
    .section.compact{padding:54px 0}
    .section-head{
      max-width:760px;
      margin-bottom:28px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--brand);
      font-size:13px;
      font-weight:850;
      letter-spacing:.08em;
      text-transform:uppercase;
      margin-bottom:12px;
    }
    .eyebrow::before{
      content:"";
      width:26px;
      height:2px;
      border-radius:2px;
      background:var(--brand);
    }
    h1,h2,h3{line-height:1.18;letter-spacing:-.04em}
    h1{font-size:clamp(34px,5vw,64px)}
    h2{font-size:clamp(27px,3.2vw,42px)}
    h3{font-size:20px}
    p{color:var(--text-soft)}
    .category-hero{
      position:relative;
      overflow:hidden;
      padding:54px 0 44px;
      border-bottom:1px solid var(--line);
      background:
        linear-gradient(90deg,rgba(8,11,9,.94),rgba(8,11,9,.72),rgba(8,11,9,.96)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    }
    .category-hero::after{
      content:"";
      position:absolute;
      inset:auto -8% -50% 42%;
      height:240px;
      background:radial-gradient(circle,rgba(83,255,176,.18),transparent 68%);
      pointer-events:none;
    }
    .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      color:var(--text-muted);
      font-size:14px;
      margin-bottom:20px;
    }
    .breadcrumb a{color:var(--text-soft)}
    .breadcrumb a:hover{color:var(--brand)}
    .hero-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);
      gap:34px;
      align-items:end;
    }
    .hero-copy p{
      max-width:760px;
      margin-top:18px;
      font-size:17px;
    }
    .filter-chips{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:26px;
    }
    .chip,.badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      border-radius:999px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.045);
      color:var(--text-soft);
      padding:8px 12px;
      font-size:13px;
      transition:background var(--ease),border-color var(--ease),color var(--ease),transform var(--ease);
    }
    .chip:hover,.chip:focus-visible{
      color:var(--text);
      border-color:var(--line-strong);
      background:rgba(83,255,176,.08);
      transform:translateY(-1px);
      outline:none;
    }
    .badge.score{color:var(--brand);background:rgba(83,255,176,.09);border-color:rgba(83,255,176,.22)}
    .badge.rule{color:var(--brand-2);background:rgba(122,231,255,.08);border-color:rgba(122,231,255,.22)}
    .badge.warn{color:var(--amber);background:rgba(255,190,102,.08);border-color:rgba(255,190,102,.24)}
    .hero-panel{
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:rgba(21,25,22,.78);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .hero-panel img{
      width:100%;
      aspect-ratio:16/10;
      object-fit:cover;
      filter:saturate(1.04) contrast(1.06);
    }
    .panel-body{padding:18px}
    .metric-row{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:10px;
      margin-top:14px;
    }
    .metric{
      padding:12px;
      border-radius:14px;
      background:rgba(255,255,255,.045);
      border:1px solid var(--line);
    }
    .metric strong{
      display:block;
      font-size:23px;
      color:var(--brand);
      line-height:1.1;
      font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;
    }
    .metric span{font-size:12px;color:var(--text-muted)}
    .info-band{
      margin-top:22px;
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:16px;
      border-radius:16px;
      background:rgba(255,190,102,.08);
      border:1px solid rgba(255,190,102,.18);
      color:var(--text-soft);
    }
    .info-band b{color:var(--amber)}
    .overview-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:22px;
      align-items:stretch;
    }
    .card{
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.02));
      box-shadow:var(--shadow-soft);
      overflow:hidden;
      transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
    }
    .card:hover{
      transform:translateY(-4px);
      border-color:rgba(83,255,176,.28);
      box-shadow:0 22px 46px rgba(0,0,0,.32);
    }
    .card-pad{padding:24px}
    .cover-card img{
      width:100%;
      aspect-ratio:16/9;
      object-fit:cover;
    }
    .cover-card .card-pad{padding:22px}
    .meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin:12px 0 10px;
      color:var(--text-muted);
      font-size:13px;
    }
    .point-list{
      display:grid;
      gap:14px;
      margin-top:18px;
    }
    .point{
      display:grid;
      grid-template-columns:38px 1fr;
      gap:13px;
      align-items:start;
      padding:15px;
      border-radius:16px;
      background:rgba(255,255,255,.035);
      border:1px solid var(--line);
    }
    .point-icon{
      width:38px;
      height:38px;
      display:flex;
      align-items:center;
      justify-content:center;
      border-radius:12px;
      color:#07100b;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      font-weight:950;
    }
    .point h3{font-size:18px;margin-bottom:4px}
    .scenario-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .scenario{
      padding:22px;
      min-height:230px;
      border-radius:var(--radius);
      border:1px solid var(--line);
      background:
        linear-gradient(180deg,rgba(83,255,176,.06),rgba(255,255,255,.02)),
        var(--panel);
      position:relative;
      overflow:hidden;
    }
    .scenario::after{
      content:"";
      position:absolute;
      right:-42px;
      top:-42px;
      width:110px;
      height:110px;
      border-radius:50%;
      background:rgba(83,255,176,.08);
    }
    .scenario .badge{margin-bottom:14px}
    .scenario h3{margin-bottom:10px}
    .steps{
      counter-reset:step;
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .step{
      counter-increment:step;
      padding:22px;
      border-radius:var(--radius);
      border:1px solid var(--line);
      background:var(--card);
      position:relative;
    }
    .step::before{
      content:"0" counter(step);
      display:inline-flex;
      margin-bottom:22px;
      color:var(--brand);
      font-size:28px;
      font-weight:950;
      line-height:1;
      font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;
    }
    .step:not(:last-child)::after{
      content:"";
      position:absolute;
      top:36px;
      right:-16px;
      width:16px;
      height:1px;
      background:var(--line-strong);
    }
    .data-board{
      border-radius:24px;
      border:1px solid var(--line);
      background:linear-gradient(135deg,rgba(29,34,31,.92),rgba(14,17,15,.94));
      overflow:hidden;
      box-shadow:var(--shadow);
    }
    .board-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:20px 22px;
      border-bottom:1px solid var(--line);
    }
    .board-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:0;
    }
    .board-item{
      padding:22px;
      border-right:1px solid var(--line);
      border-bottom:1px solid var(--line);
    }
    .board-item:nth-child(2n){border-right:0}
    .score-line{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      margin:14px 0 8px;
      font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;
      font-size:24px;
      font-weight:950;
      color:var(--text);
    }
    .score-line span:nth-child(2){color:var(--brand)}
    .rule-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:18px;
    }
    .rule-card{
      padding:22px;
      border-radius:var(--radius);
      border:1px solid var(--line);
      background:var(--panel);
    }
    .rule-card h3{display:flex;align-items:center;gap:10px;margin-bottom:9px}
    .dot{
      width:10px;
      height:10px;
      border-radius:50%;
      background:var(--brand);
      box-shadow:0 0 16px var(--brand);
      flex:0 0 auto;
    }
    .faq-list{
      display:grid;
      gap:12px;
      max-width:900px;
    }
    .faq-item{
      border:1px solid var(--line);
      border-radius:16px;
      background:rgba(255,255,255,.035);
      overflow:hidden;
    }
    .faq-q{
      width:100%;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      text-align:left;
      font-weight:850;
    }
    .faq-q::after{
      content:"+";
      color:var(--brand);
      font-size:24px;
      line-height:1;
      transition:transform var(--ease);
    }
    .faq-item.active .faq-q::after{transform:rotate(45deg)}
    .faq-a{
      max-height:0;
      overflow:hidden;
      transition:max-height .28s ease;
    }
    .faq-a p{
      padding:0 20px 18px;
      color:var(--text-soft);
    }
    .cta{
      padding:34px;
      border-radius:26px;
      border:1px solid rgba(83,255,176,.24);
      background:
        linear-gradient(135deg,rgba(83,255,176,.12),rgba(122,231,255,.06) 48%,rgba(165,139,255,.08)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
      overflow:hidden;
      position:relative;
    }
    .cta::before{
      content:"";
      position:absolute;
      inset:0;
      background:rgba(8,11,9,.72);
    }
    .cta-inner{
      position:relative;
      display:grid;
      grid-template-columns:1fr auto;
      gap:24px;
      align-items:center;
    }
    .cta h2{margin-bottom:10px}
    .site-footer{
      padding:56px 0 26px;
      border-top:1px solid var(--line);
      background:#080a09;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.3fr .8fr .9fr 1.1fr;
      gap:30px;
      align-items:start;
    }
    .footer-logo{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:14px;
    }
    .footer-logo b{font-size:18px}
    .footer-col h3{
      font-size:16px;
      margin-bottom:14px;
      color:var(--text);
    }
    .footer-links{
      display:grid;
      gap:9px;
    }
    .footer-links a{
      color:var(--text-muted);
      transition:color var(--ease),transform var(--ease);
    }
    .footer-links a:hover,
    .footer-links a:focus-visible{
      color:var(--brand);
      transform:translateX(2px);
      outline:none;
    }
    .footer-col p{font-size:14px;color:var(--text-muted)}
    .footer-bottom{
      margin-top:34px;
      padding-top:20px;
      border-top:1px solid var(--line);
      display:flex;
      justify-content:space-between;
      gap:20px;
      color:var(--text-muted);
      font-size:13px;
    }
    .footer-bottom strong{color:var(--amber)}
    @media (max-width:1024px){
      .header-action{display:none}
      .hero-grid,.overview-grid,.cta-inner{grid-template-columns:1fr}
      .scenario-grid{grid-template-columns:repeat(2,1fr)}
      .steps{grid-template-columns:repeat(2,1fr)}
      .step::after{display:none}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:767px){
      :root{--nav-h:64px}
      .container{width:min(100% - 28px,var(--max))}
      .top-alert .container{align-items:flex-start;flex-direction:column;padding:8px 0;gap:6px}
      .brand-text span{display:none}
      .menu-toggle{display:block}
      .nav-menu{
        position:absolute;
        left:14px;
        right:14px;
        top:calc(var(--nav-h) + 10px);
        display:none;
        flex-direction:column;
        align-items:stretch;
        border-radius:18px;
        padding:10px;
        background:rgba(13,16,14,.96);
        box-shadow:var(--shadow);
      }
      .nav-menu.open{display:flex}
      .nav-menu a{text-align:center;border-radius:12px}
      .category-hero{padding:36px 0}
      .metric-row,.board-grid,.rule-grid,.scenario-grid,.steps{grid-template-columns:1fr}
      .board-item{border-right:0}
      .section{padding:52px 0}
      .section.compact{padding:40px 0}
      .cta{padding:24px}
      .cta-inner{gap:18px}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{flex-direction:column}
    }
    @media (max-width:520px){
      h1{font-size:32px}
      h2{font-size:26px}
      .hero-copy p{font-size:15px}
      .filter-chips{gap:8px}
      .chip,.badge{font-size:12px;padding:7px 10px}
      .score-line{font-size:20px}
    }