/* roulang page: index */
:root{
      --bg:#080b12;
      --bg-soft:#0f1422;
      --panel:#151b2b;
      --panel-2:#111827;
      --card:#182033;
      --card-hover:#1f2a44;
      --text:#f7f8fb;
      --muted:#aab3c5;
      --weak:#7d8798;
      --line:rgba(255,255,255,.10);
      --line-strong:rgba(255,255,255,.18);
      --primary:#ff4d6d;
      --primary-2:#ff8a3d;
      --secondary:#7c5cff;
      --accent:#35d0ba;
      --warning:#ffd166;
      --success:#70e000;
      --danger:#ff5a5f;
      --shadow:0 24px 70px rgba(0,0,0,.35);
      --shadow-soft:0 14px 35px rgba(0,0,0,.24);
      --radius-lg:30px;
      --radius:22px;
      --radius-sm:14px;
      --container:1180px;
      --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:var(--font);
      color:var(--text);
      background:
        radial-gradient(circle at 15% 0%, rgba(255,77,109,.20), transparent 34%),
        radial-gradient(circle at 88% 12%, rgba(124,92,255,.20), transparent 30%),
        linear-gradient(180deg,#080b12 0%,#0b1020 42%,#080b12 100%);
      line-height:1.7;
      min-height:100vh;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{border:0;cursor:pointer}
    ::selection{background:rgba(255,77,109,.32);color:#fff}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .skip-link{
      position:absolute;left:-999px;top:16px;
      background:#fff;color:#111827;padding:10px 14px;border-radius:12px;z-index:999;
    }
    .skip-link:focus{left:16px;outline:3px solid var(--primary)}
    .topbar{
      border-bottom:1px solid var(--line);
      background:rgba(8,11,18,.82);
      backdrop-filter:blur(18px);
      position:relative;
      z-index:20;
    }
    .topbar-inner{
      min-height:42px;display:flex;align-items:center;justify-content:space-between;
      gap:16px;color:var(--muted);font-size:13px;
    }
    .topbar strong{color:#fff;font-weight:700}
    .topbar-actions{display:flex;gap:14px;align-items:center;white-space:nowrap}
    .topbar-actions a{color:#d7dceb;transition:.2s ease}
    .topbar-actions a:hover{color:#fff}
    .site-header{
      position:sticky;top:0;z-index:19;
      background:rgba(8,11,18,.72);
      border-bottom:1px solid var(--line);
      backdrop-filter:blur(18px);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;
      min-height:76px;gap:18px;
    }
    .brand{
      display:flex;align-items:center;gap:12px;min-width:0;
      font-weight:900;letter-spacing:-.02em;
    }
    .brand-mark{
      width:42px;height:42px;border-radius:16px;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      display:grid;place-items:center;box-shadow:0 12px 30px rgba(255,77,109,.32);
      flex:0 0 auto;
    }
    .brand-mark:before{
      content:"";width:0;height:0;border-top:9px solid transparent;border-bottom:9px solid transparent;border-left:15px solid #fff;margin-left:4px;
    }
    .brand-name{font-size:18px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:360px}
    .nav-menu{display:flex;align-items:center;gap:8px;margin:0;padding:0;list-style:none}
    .nav-link{
      display:inline-flex;align-items:center;height:42px;padding:0 16px;border-radius:999px;
      color:#cfd6e7;font-weight:700;font-size:14px;transition:.22s ease;
    }
    .nav-link:hover,.nav-link.active{background:rgba(255,255,255,.08);color:#fff}
    .nav-search{
      display:flex;align-items:center;gap:10px;
      background:rgba(255,255,255,.06);border:1px solid var(--line);
      border-radius:999px;padding:8px 10px 8px 16px;min-width:250px;
    }
    .nav-search input{
      width:100%;background:transparent;border:0;outline:0;color:#fff;font-size:14px;
    }
    .nav-search input::placeholder{color:#7d8798}
    .nav-search button{
      width:34px;height:34px;border-radius:50%;
      color:#fff;background:linear-gradient(135deg,var(--primary),var(--secondary));
      transition:.2s ease;
    }
    .nav-search button:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(255,77,109,.28)}
    .menu-toggle{
      display:none;width:42px;height:42px;border-radius:14px;
      background:rgba(255,255,255,.07);border:1px solid var(--line);color:#fff;
    }
    .menu-toggle span{display:block;width:18px;height:2px;background:#fff;margin:4px auto;border-radius:2px}
    .hero{
      position:relative;padding:58px 0 44px;overflow:hidden;
    }
    .hero:before{
      content:"";position:absolute;inset:36px auto auto 50%;width:780px;height:360px;
      transform:translateX(-50%);background:radial-gradient(circle,rgba(255,77,109,.20),transparent 64%);
      pointer-events:none;filter:blur(4px);
    }
    .group-banner{
      position:relative;
      border:1px solid var(--line-strong);
      background:
        linear-gradient(135deg,rgba(255,77,109,.18),rgba(124,92,255,.10) 45%,rgba(53,208,186,.10)),
        rgba(17,24,39,.74);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      overflow:hidden;
      padding:34px;
    }
    .group-banner:after{
      content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;
      border-radius:50%;background:linear-gradient(135deg,rgba(255,138,61,.26),rgba(124,92,255,.05));
    }
    .hero-grid{
      position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:stretch;
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;
      color:#ffe8ee;background:rgba(255,77,109,.14);border:1px solid rgba(255,77,109,.24);
      font-size:13px;font-weight:800;margin-bottom:18px;
    }
    .pulse{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 0 6px rgba(112,224,0,.14)}
    h1{
      margin:0 0 18px;font-size:clamp(34px,5.2vw,66px);line-height:1.08;letter-spacing:-.055em;
      max-width:820px;
    }
    .hero p{
      margin:0;color:#d7ddec;font-size:17px;max-width:760px;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      min-height:48px;padding:0 20px;border-radius:999px;font-weight:900;
      transition:.22s ease;border:1px solid transparent;white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:0 14px 26px rgba(255,77,109,.25)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(255,77,109,.34)}
    .btn-secondary{background:rgba(255,255,255,.08);color:#fff;border-color:var(--line-strong)}
    .btn-secondary:hover{background:rgba(255,255,255,.13);transform:translateY(-2px)}
    .btn-ghost{color:#fff;background:transparent;border-color:rgba(255,255,255,.18)}
    .btn-ghost:hover{background:rgba(255,255,255,.08)}
    .btn:focus,.nav-link:focus,.nav-search button:focus,.menu-toggle:focus,input:focus,textarea:focus{outline:3px solid rgba(53,208,186,.42);outline-offset:3px}
    .group-panel{
      background:rgba(8,11,18,.60);border:1px solid var(--line);
      border-radius:26px;padding:22px;display:flex;flex-direction:column;justify-content:space-between;min-height:330px;
    }
    .group-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:16px}
    .group-title{font-size:18px;font-weight:900}
    .badge{
      display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;
      background:rgba(53,208,186,.12);border:1px solid rgba(53,208,186,.24);color:#b9fff4;font-size:12px;font-weight:800;
    }
    .people-row{display:flex;align-items:center;margin:18px 0 14px}
    .avatar{
      width:38px;height:38px;border-radius:50%;border:2px solid #121827;
      margin-left:-9px;background:linear-gradient(135deg,#ff4d6d,#7c5cff);
      display:grid;place-items:center;font-weight:900;font-size:13px;
    }
    .avatar:first-child{margin-left:0}
    .progress-wrap{margin:14px 0 18px}
    .progress-top{display:flex;justify-content:space-between;color:#cfd6e7;font-size:13px;margin-bottom:8px}
    .progress{height:10px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
    .progress i{display:block;width:76%;height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:999px}
    .group-note{color:var(--muted);font-size:14px;margin:0 0 16px}
    .hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .stat-mini{
      border:1px solid var(--line);background:rgba(255,255,255,.05);border-radius:18px;padding:14px;
    }
    .stat-mini b{display:block;font-size:24px;line-height:1;color:#fff}
    .stat-mini span{display:block;color:var(--muted);font-size:12px;margin-top:6px}
    main{position:relative}
    section{padding:72px 0}
    .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;margin-bottom:28px}
    .section-kicker{color:var(--primary);font-weight:900;font-size:13px;letter-spacing:.08em;margin-bottom:8px}
    .section-title{margin:0;font-size:clamp(26px,3.2vw,42px);line-height:1.18;letter-spacing:-.035em}
    .section-desc{margin:10px 0 0;color:var(--muted);max-width:720px;font-size:16px}
    .case-strip{
      display:grid;grid-template-columns:1.25fr .75fr;gap:18px;
    }
    .case-card,.metric-card,.compare-card,.info-panel,.security-card,.ip-card,.seed-card,.faq-item,.form-card{
      background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.035));
      border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-soft);
      transition:.24s ease;
    }
    .case-card:hover,.metric-card:hover,.security-card:hover,.ip-card:hover,.seed-card:hover{
      transform:translateY(-4px);background:linear-gradient(180deg,rgba(255,255,255,.105),rgba(255,255,255,.045));border-color:rgba(255,255,255,.22);
    }
    .case-main{padding:28px;display:grid;grid-template-columns:1fr 260px;gap:22px;align-items:center}
    .case-main h3,.case-side h3{margin:0 0 10px;font-size:22px}
    .case-main p,.case-side p{margin:0;color:var(--muted)}
    .case-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
    .tag{
      display:inline-flex;padding:7px 10px;border-radius:999px;background:rgba(255,255,255,.07);
      color:#dfe5f2;font-size:12px;font-weight:800;border:1px solid var(--line);
    }
    .poster-stack{position:relative;height:190px}
    .poster{
      position:absolute;width:120px;height:170px;border-radius:18px;border:1px solid rgba(255,255,255,.18);
      background:linear-gradient(135deg,rgba(255,77,109,.75),rgba(124,92,255,.65));
      box-shadow:0 18px 35px rgba(0,0,0,.28);
      display:flex;align-items:flex-end;padding:14px;color:#fff;font-weight:900;
    }
    .poster:nth-child(1){right:96px;top:12px;transform:rotate(-7deg)}
    .poster:nth-child(2){right:48px;top:0;background:linear-gradient(135deg,rgba(53,208,186,.75),rgba(124,92,255,.65))}
    .poster:nth-child(3){right:0;top:22px;transform:rotate(7deg);background:linear-gradient(135deg,rgba(255,138,61,.75),rgba(255,77,109,.65))}
    .case-side{padding:28px;display:flex;flex-direction:column;justify-content:space-between;gap:18px}
    .quote{
      font-size:15px;color:#dbe2f0;border-left:3px solid var(--primary);padding-left:14px;
    }
    .metrics-grid{display:grid;grid-template-columns:1fr 1fr 1fr 1.3fr;gap:16px}
    .metric-card{padding:24px}
    .metric-card b{display:block;font-size:clamp(30px,4vw,46px);line-height:1;color:#fff;letter-spacing:-.04em}
    .metric-card span{display:block;color:var(--muted);margin-top:10px;font-size:14px}
    .metric-card.feature{background:linear-gradient(135deg,rgba(255,77,109,.18),rgba(124,92,255,.12));}
    .compare-wrap{
      display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:stretch;
    }
    .compare-card{padding:26px}
    .compare-card h3{margin:0 0 18px;font-size:22px}
    .compare-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
    .compare-list li{
      display:flex;gap:12px;align-items:flex-start;padding:13px;border-radius:16px;background:rgba(255,255,255,.045);
      color:#d7ddec;border:1px solid rgba(255,255,255,.07);
    }
    .icon-dot{
      width:24px;height:24px;flex:0 0 auto;border-radius:50%;
      display:grid;place-items:center;font-weight:900;font-size:13px;margin-top:1px;
    }
    .bad .icon-dot{background:rgba(255,90,95,.14);color:#ff9aa0}
    .good .icon-dot{background:rgba(53,208,186,.14);color:#97fff2}
    .news-layout{display:grid;grid-template-columns:1.4fr .8fr;gap:20px}
    .news-list{background:rgba(255,255,255,.045);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .news-item{
      display:grid;grid-template-columns:120px 1fr auto;gap:18px;align-items:center;
      padding:18px 20px;border-bottom:1px solid var(--line);transition:.2s ease;
    }
    .news-item:last-child{border-bottom:0}
    .news-item:hover{background:rgba(255,255,255,.065)}
    .news-date{color:var(--weak);font-size:13px}
    .news-item h3{margin:0 0 5px;font-size:17px}
    .news-item p{margin:0;color:var(--muted);font-size:14px}
    .arrow{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.07);color:#fff}
    .recommend{padding:24px;background:linear-gradient(160deg,rgba(255,77,109,.18),rgba(255,255,255,.04));border:1px solid var(--line);border-radius:var(--radius)}
    .recommend h3{margin:0 0 10px;font-size:22px}
    .recommend p{margin:0 0 18px;color:var(--muted)}
    .rank-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
    .rank-list li{
      display:flex;align-items:center;gap:12px;padding:12px;border-radius:15px;background:rgba(0,0,0,.18);border:1px solid rgba(255,255,255,.08);
    }
    .rank-list em{font-style:normal;width:26px;height:26px;border-radius:9px;background:rgba(255,255,255,.10);display:grid;place-items:center;font-weight:900;color:#fff}
    .security-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .security-card{padding:22px}
    .security-icon{width:46px;height:46px;border-radius:16px;display:grid;place-items:center;background:rgba(53,208,186,.12);color:#b8fff4;font-size:22px;margin-bottom:14px}
    .security-card h3{margin:0 0 8px;font-size:18px}
    .security-card p{margin:0;color:var(--muted);font-size:14px}
    .ip-scroll{display:flex;gap:16px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x mandatory}
    .ip-scroll::-webkit-scrollbar{height:8px}
    .ip-scroll::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18);border-radius:999px}
    .ip-card{min-width:260px;padding:22px;scroll-snap-align:start}
    .ip-face{width:62px;height:62px;border-radius:22px;background:linear-gradient(135deg,var(--secondary),var(--primary));display:grid;place-items:center;font-weight:900;font-size:24px;margin-bottom:14px}
    .ip-card h3{margin:0 0 8px}
    .ip-card p{margin:0;color:var(--muted);font-size:14px}
    .seed-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .seed-card{overflow:hidden}
    .seed-cover{height:210px;background:linear-gradient(160deg,rgba(255,77,109,.72),rgba(17,24,39,.95));position:relative;padding:16px;display:flex;align-items:flex-end}
    .seed-cover:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 70% 20%,rgba(255,255,255,.24),transparent 32%)}
    .seed-cover strong{position:relative;font-size:22px;line-height:1.15}
    .seed-body{padding:18px}
    .seed-body p{margin:0 0 14px;color:var(--muted);font-size:14px}
    .tiny-link{font-weight:900;color:#fff;display:inline-flex;gap:6px;align-items:center}
    .faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:20px}
    .faq-aside{
      border-radius:var(--radius);padding:26px;background:linear-gradient(135deg,rgba(53,208,186,.13),rgba(124,92,255,.10));border:1px solid var(--line);
    }
    .faq-aside h2{margin:0 0 10px;font-size:30px;line-height:1.2}
    .faq-aside p{margin:0;color:var(--muted)}
    .faq-list{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-question{
      width:100%;background:transparent;color:#fff;text-align:left;padding:18px 20px;
      display:flex;justify-content:space-between;align-items:center;gap:18px;font-weight:900;
    }
    .faq-question i{font-style:normal;width:26px;height:26px;border-radius:50%;background:rgba(255,255,255,.08);display:grid;place-items:center;transition:.2s ease}
    .faq-answer{display:none;padding:0 20px 20px;color:var(--muted)}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question i{transform:rotate(45deg);background:rgba(255,77,109,.22)}
    .consult{
      padding-bottom:86px;
    }
    .consult-grid{display:grid;grid-template-columns:1fr .9fr;gap:20px;align-items:stretch}
    .cta-panel{
      border-radius:var(--radius-lg);padding:32px;position:relative;overflow:hidden;
      background:linear-gradient(135deg,rgba(255,77,109,.24),rgba(124,92,255,.16),rgba(53,208,186,.10));
      border:1px solid var(--line-strong);box-shadow:var(--shadow);
    }
    .cta-panel:after{content:"";position:absolute;right:-70px;bottom:-90px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.08)}
    .cta-panel h2{margin:0 0 12px;font-size:clamp(28px,3.5vw,44px);line-height:1.18}
    .cta-panel p{margin:0 0 24px;color:#dbe2f0;max-width:680px}
    .cta-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;position:relative;z-index:1}
    .cta-points div{padding:14px;border-radius:18px;background:rgba(8,11,18,.32);border:1px solid rgba(255,255,255,.10)}
    .cta-points b{display:block}
    .cta-points span{color:var(--muted);font-size:13px}
    .form-card{padding:24px}
    .form-card h3{margin:0 0 10px;font-size:24px}
    .form-card p{margin:0 0 18px;color:var(--muted)}
    .form-grid{display:grid;gap:12px}
    .field label{display:block;font-size:13px;color:#dfe5f2;font-weight:800;margin-bottom:7px}
    .field input,.field textarea{
      width:100%;border:1px solid var(--line);background:rgba(255,255,255,.06);color:#fff;border-radius:15px;padding:13px 14px;outline:0;transition:.2s ease;
    }
    .field input:hover,.field textarea:hover{border-color:rgba(255,255,255,.22);background:rgba(255,255,255,.075)}
    .field textarea{min-height:104px;resize:vertical}
    .form-hint{font-size:12px;color:var(--weak);margin-top:10px}
    .site-footer{
      border-top:1px solid var(--line);background:rgba(5,8,14,.78);padding:42px 0 28px;
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:24px;align-items:start}
    .footer-brand{font-size:20px;font-weight:900;margin-bottom:10px}
    .footer-text{color:var(--muted);margin:0;max-width:560px}
    .footer-title{font-weight:900;margin-bottom:10px}
    .footer-links{list-style:none;margin:0;padding:0;display:grid;gap:8px}
    .footer-links a{color:var(--muted);transition:.2s ease}
    .footer-links a:hover{color:#fff}
    .copyright{
      margin-top:28px;padding-top:20px;border-top:1px solid var(--line);
      color:var(--weak);font-size:13px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    }
    .float-cta{
      position:fixed;left:50%;bottom:18px;transform:translateX(-50%);
      width:min(760px,calc(100% - 28px));z-index:18;
      display:flex;align-items:center;justify-content:space-between;gap:12px;
      background:rgba(17,24,39,.86);border:1px solid var(--line-strong);border-radius:999px;
      padding:10px 12px 10px 18px;box-shadow:0 16px 45px rgba(0,0,0,.35);backdrop-filter:blur(16px);
    }
    .float-cta span{color:#dfe5f2;font-size:14px;font-weight:800}
    .float-cta .btn{min-height:40px;padding:0 16px;font-size:14px}
    @media (max-width:1024px){
      .nav-search{min-width:190px}
      .hero-grid,.case-strip,.case-main,.consult-grid,.faq-wrap{grid-template-columns:1fr}
      .metrics-grid{grid-template-columns:repeat(2,1fr)}
      .security-grid,.seed-grid{grid-template-columns:repeat(2,1fr)}
      .news-layout{grid-template-columns:1fr}
      .poster-stack{height:165px}
      .poster:nth-child(1){right:auto;left:0}
      .poster:nth-child(2){right:auto;left:80px}
      .poster:nth-child(3){right:auto;left:160px}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .topbar-inner{align-items:flex-start;flex-direction:column;padding:10px 0;gap:6px}
      .topbar-actions{width:100%;justify-content:space-between}
      .menu-toggle{display:block}
      .nav{min-height:68px;flex-wrap:wrap}
      .brand-name{max-width:230px}
      .nav-menu{
        order:4;width:100%;display:none;flex-direction:column;align-items:stretch;padding:8px 0 14px;
      }
      .nav-menu.open{display:flex}
      .nav-link{width:100%;justify-content:center;background:rgba(255,255,255,.045)}
      .nav-search{order:3;width:100%;display:none}
      .nav-search.open{display:flex}
      .hero{padding:34px 0 28px}
      .group-banner{padding:22px;border-radius:24px}
      .hero-actions .btn{width:100%}
      .hero-stats,.cta-points{grid-template-columns:1fr}
      section{padding:50px 0}
      .section-head{display:block}
      .compare-wrap{grid-template-columns:1fr}
      .news-item{grid-template-columns:1fr;gap:8px}
      .security-grid,.seed-grid,.metrics-grid{grid-template-columns:1fr}
      .float-cta{border-radius:22px;align-items:flex-start;flex-direction:column;padding:14px}
      .float-cta .btn{width:100%}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      h1{font-size:34px}
      .group-panel{padding:18px;min-height:auto}
      .poster{width:98px;height:145px}
      .poster:nth-child(2){left:62px}
      .poster:nth-child(3){left:124px}
      .case-main{padding:20px}
      .case-side,.metric-card,.compare-card,.form-card,.cta-panel{padding:20px}
      .ip-card{min-width:230px}
      .seed-cover{height:180px}
    }