/* roulang page: index */
:root{
      --bg:#f8fafc;
      --panel:#ffffff;
      --ink:#111827;
      --muted:#667085;
      --soft:#f1f5f9;
      --line:#e5e7eb;
      --brand:#c026d3;
      --brand-2:#7c3aed;
      --brand-dark:#86198f;
      --gold:#f59e0b;
      --green:#10b981;
      --night:#080b12;
      --radius-sm:12px;
      --radius:22px;
      --radius-lg:32px;
      --shadow:0 18px 60px rgba(15,23,42,.10);
      --shadow-strong:0 28px 90px rgba(15,23,42,.18);
      --ring:0 0 0 4px rgba(192,38,211,.18);
    }
    *{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(--ink);
      background:
        radial-gradient(circle at 18% 4%, rgba(192,38,211,.12), transparent 28%),
        radial-gradient(circle at 86% 12%, rgba(245,158,11,.12), transparent 24%),
        linear-gradient(180deg,#ffffff 0%,#f8fafc 42%,#fff 100%);
      line-height:1.7;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    ::selection{background:rgba(192,38,211,.18)}
    .container{width:min(1180px,calc(100% - 40px));margin-inline:auto}
    .skip-link{
      position:absolute;left:16px;top:-80px;z-index:1000;
      padding:10px 14px;border-radius:999px;background:#fff;color:var(--brand-dark);
      box-shadow:var(--shadow);transition:.25s ease;
    }
    .skip-link:focus{top:14px;outline:none;box-shadow:var(--ring),var(--shadow)}
    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(160%) blur(18px);
      background:rgba(255,255,255,.82);
      border-bottom:1px solid rgba(229,231,235,.78);
    }
    .nav-wrap{
      min-height:76px;display:flex;align-items:center;justify-content:space-between;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;
      display:grid;place-items:center;color:#fff;font-weight:900;
      background:linear-gradient(135deg,var(--night),var(--brand) 56%,var(--gold));
      box-shadow:0 14px 30px rgba(192,38,211,.22);
      flex:0 0 auto;
    }
    .brand-text{font-size:17px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .nav-links{display:flex;align-items:center;gap:8px;margin-left:auto}
    .nav-link{
      display:inline-flex;align-items:center;justify-content:center;
      height:42px;padding:0 15px;border-radius:999px;color:#475467;font-weight:700;
      transition:background .22s ease,color .22s ease,transform .22s ease;
    }
    .nav-link:hover,.nav-link.active{background:#f3e8ff;color:var(--brand-dark)}
    .nav-link:active{transform:translateY(1px)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .search-pill{
      width:210px;height:42px;border:1px solid var(--line);border-radius:999px;background:#fff;
      display:flex;align-items:center;gap:8px;padding:0 14px;color:#94a3b8;
      box-shadow:0 8px 28px rgba(15,23,42,.04);
    }
    .search-pill input{
      width:100%;border:0;outline:0;background:transparent;color:var(--ink);font-size:14px;
    }
    .search-pill:focus-within{border-color:rgba(192,38,211,.48);box-shadow:var(--ring)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      min-height:46px;padding:0 18px;border-radius:999px;border:1px solid transparent;
      font-weight:850;letter-spacing:-.01em;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
      cursor:pointer;white-space:nowrap;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible{outline:none;box-shadow:var(--ring)}
    .btn-primary{
      color:#fff;background:linear-gradient(135deg,var(--brand-dark),var(--brand) 55%,var(--brand-2));
      box-shadow:0 18px 38px rgba(192,38,211,.24);
    }
    .btn-primary:hover{box-shadow:0 24px 48px rgba(192,38,211,.32)}
    .btn-secondary{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:0 12px 28px rgba(15,23,42,.06)}
    .btn-secondary:hover{border-color:rgba(192,38,211,.34);color:var(--brand-dark)}
    .btn-dark{background:var(--night);color:#fff;box-shadow:0 18px 42px rgba(8,11,18,.20)}
    .mobile-toggle{
      display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:14px;background:#fff;
      align-items:center;justify-content:center;color:var(--ink);
    }
    .mobile-toggle:focus-visible{outline:none;box-shadow:var(--ring)}
    .hero{padding:74px 0 54px;overflow:hidden}
    .hero-shell{
      position:relative;border-radius:42px;padding:34px;
      background:
        linear-gradient(180deg,rgba(255,255,255,.92),rgba(255,255,255,.74)),
        radial-gradient(circle at 50% 0%,rgba(192,38,211,.18),transparent 38%);
      border:1px solid rgba(229,231,235,.88);
      box-shadow:var(--shadow-strong);
    }
    .hero-grid{
      display:grid;grid-template-columns:1fr minmax(330px,520px) 1fr;gap:24px;align-items:center;
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;
      color:var(--brand-dark);background:#fae8ff;border:1px solid #f5d0fe;
      font-size:13px;font-weight:850;
    }
    h1{
      margin:18px 0 16px;font-size:clamp(34px,5vw,64px);line-height:1.06;letter-spacing:-.055em;
      color:#0f172a;
    }
    .hero-copy{font-size:17px;color:#475467;margin:0;max-width:690px}
    .value-stack{display:grid;gap:14px}
    .value-item{
      padding:18px;border-radius:24px;background:rgba(255,255,255,.82);border:1px solid rgba(229,231,235,.9);
      box-shadow:0 14px 44px rgba(15,23,42,.06);transition:.25s ease;
    }
    .value-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .value-k{font-size:13px;color:#667085;font-weight:800}
    .value-v{display:block;margin-top:6px;font-size:22px;line-height:1.2;font-weight:950;letter-spacing:-.03em}
    .stage{
      position:relative;min-height:480px;border-radius:34px;overflow:hidden;
      background:
        linear-gradient(145deg,rgba(8,11,18,.96),rgba(30,41,59,.96)),
        radial-gradient(circle at 50% 10%,rgba(192,38,211,.42),transparent 36%);
      box-shadow:0 36px 95px rgba(8,11,18,.30);
      border:1px solid rgba(255,255,255,.10);
      padding:22px;
    }
    .stage:before{
      content:"";position:absolute;inset:-80px;
      background:radial-gradient(circle at 50% 0%,rgba(245,158,11,.20),transparent 32%),radial-gradient(circle at 20% 70%,rgba(192,38,211,.30),transparent 35%);
      filter:blur(10px);opacity:.86;
    }
    .stage-card{
      position:relative;z-index:1;height:100%;min-height:436px;border-radius:26px;
      background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
      backdrop-filter:blur(14px);padding:22px;display:flex;flex-direction:column;justify-content:space-between;
    }
    .stage-top{display:flex;align-items:center;justify-content:space-between;gap:12px;color:#fff}
    .dots{display:flex;gap:7px}.dots span{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.32)}.dots span:first-child{background:#fb7185}.dots span:nth-child(2){background:#fbbf24}.dots span:nth-child(3){background:#34d399}
    .screen-title{font-weight:900;letter-spacing:-.02em}
    .kpi-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:22px}
    .kpi{
      border-radius:20px;padding:15px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.12);color:#fff;
    }
    .kpi b{display:block;font-size:28px;line-height:1;font-weight:950}.kpi span{font-size:12px;color:rgba(255,255,255,.68)}
    .signal-list{display:grid;gap:10px;margin-top:18px}
    .signal{
      display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 14px;border-radius:16px;
      background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.10);color:rgba(255,255,255,.88);
    }
    .signal small{color:rgba(255,255,255,.55)}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .section{padding:54px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:26px}
    .section-title{margin:0;font-size:clamp(26px,3vw,42px);line-height:1.14;letter-spacing:-.04em;font-weight:950}
    .section-desc{margin:10px 0 0;color:#667085;max-width:690px;font-size:16px}
    .badge{
      display:inline-flex;align-items:center;gap:7px;padding:7px 11px;border-radius:999px;
      background:#f8fafc;border:1px solid var(--line);color:#475467;font-size:13px;font-weight:800;
    }
    .pain-layout{display:grid;grid-template-columns:1.06fr .94fr;gap:24px;align-items:stretch}
    .pain-panel{
      border-radius:32px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);padding:28px;
    }
    .compare-row{
      display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center;margin-top:18px;
    }
    .compare-box{
      min-height:238px;border-radius:24px;padding:22px;border:1px solid var(--line);background:#f8fafc;
    }
    .compare-box.good{background:linear-gradient(180deg,#fff,#fdf4ff);border-color:#f5d0fe}
    .compare-box h3{margin:0 0 14px;font-size:19px;font-weight:950}
    .check-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .check-list li{display:flex;gap:10px;color:#475467;font-size:15px}
    .check-list li:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand);margin-top:10px;flex:0 0 auto}
    .versus{width:46px;height:46px;border-radius:999px;display:grid;place-items:center;background:#111827;color:#fff;font-weight:950;box-shadow:0 16px 34px rgba(17,24,39,.18)}
    .metric-wall{display:grid;gap:14px}
    .metric-card{
      display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px;border-radius:24px;
      background:linear-gradient(135deg,#111827,#312e81);color:#fff;box-shadow:var(--shadow);
    }
    .metric-card:nth-child(2){background:linear-gradient(135deg,#581c87,#c026d3)}
    .metric-card:nth-child(3){background:linear-gradient(135deg,#92400e,#f59e0b)}
    .metric-card b{font-size:30px;line-height:1;font-weight:950}.metric-card span{color:rgba(255,255,255,.75);font-size:14px}
    .steps{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}
    .step-list{display:grid;gap:16px}
    .step{
      display:grid;grid-template-columns:auto 1fr;gap:16px;padding:22px;border-radius:28px;background:#fff;border:1px solid var(--line);
      box-shadow:0 14px 46px rgba(15,23,42,.06);transition:.25s ease;
    }
    .step:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .step-num{
      width:46px;height:46px;border-radius:17px;display:grid;place-items:center;
      background:#111827;color:#fff;font-weight:950;
    }
    .step h3{margin:0 0 6px;font-size:18px;font-weight:950}.step p{margin:0;color:#667085}
    .guide-card{
      border-radius:34px;padding:28px;background:linear-gradient(180deg,#111827,#080b12);color:#fff;
      min-height:100%;box-shadow:var(--shadow-strong);position:relative;overflow:hidden;
    }
    .guide-card:after{content:"";position:absolute;right:-80px;bottom:-100px;width:260px;height:260px;border-radius:50%;background:rgba(192,38,211,.34);filter:blur(8px)}
    .guide-card h3{position:relative;margin:0 0 12px;font-size:25px;font-weight:950;letter-spacing:-.03em}
    .guide-card p{position:relative;color:rgba(255,255,255,.72);margin:0 0 20px}
    .mini-tags{position:relative;display:flex;flex-wrap:wrap;gap:9px}.mini-tags span{padding:8px 10px;border-radius:999px;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.12);font-size:13px;color:rgba(255,255,255,.86)}
    .matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .feature{
      padding:22px;border-radius:26px;background:#fff;border:1px solid var(--line);
      box-shadow:0 14px 42px rgba(15,23,42,.05);transition:.25s ease;
    }
    .feature:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .icon{
      width:42px;height:42px;border-radius:16px;display:grid;place-items:center;margin-bottom:14px;
      background:#fae8ff;color:var(--brand-dark);font-weight:950;
    }
    .feature h3{font-size:18px;margin:0 0 8px;font-weight:950}.feature p{margin:0;color:#667085;font-size:15px}
    .ticket-wrap{
      display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch;
    }
    .ticket{
      position:relative;padding:24px;border-radius:30px;background:#fff;border:1px solid var(--line);
      box-shadow:0 14px 42px rgba(15,23,42,.06);transition:.25s ease;
    }
    .ticket:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .ticket.featured{border-color:#e879f9;background:linear-gradient(180deg,#fff,#fdf4ff)}
    .ticket h3{margin:0;font-size:22px;font-weight:950}.ticket .price{margin:10px 0 12px;font-size:32px;font-weight:950;letter-spacing:-.04em}
    .ticket p{color:#667085;margin:0 0 16px}.ticket ul{display:grid;gap:9px;margin:0 0 20px;padding:0;list-style:none;color:#475467}
    .ticket li{display:flex;gap:8px}.ticket li:before{content:"✓";color:var(--green);font-weight:950}
    .timeline{
      position:relative;display:grid;gap:14px;padding-left:20px;
    }
    .timeline:before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:2px;background:#e9d5ff}
    .time-item{
      position:relative;padding:18px 20px;border-radius:24px;background:#fff;border:1px solid var(--line);
      box-shadow:0 12px 34px rgba(15,23,42,.05);
    }
    .time-item:before{content:"";position:absolute;left:-20px;top:26px;width:12px;height:12px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 5px #fae8ff}
    .time-item strong{display:block;font-weight:950}.time-item span{color:#667085;font-size:15px}
    .security-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px}
    .shield{
      border-radius:34px;padding:30px;background:linear-gradient(135deg,#0f172a,#111827 46%,#581c87);color:#fff;box-shadow:var(--shadow-strong);
    }
    .shield .big{font-size:60px;line-height:1}.shield h3{font-size:28px;margin:18px 0 10px;font-weight:950}.shield p{color:rgba(255,255,255,.72);margin:0}
    .security-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .security-item{padding:20px;border-radius:24px;background:#fff;border:1px solid var(--line);box-shadow:0 12px 34px rgba(15,23,42,.05)}
    .security-item b{display:block;margin-bottom:7px;font-weight:950}.security-item span{color:#667085;font-size:15px}
    .news-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}
    .news-list{border-radius:30px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);overflow:hidden}
    .news-link{
      display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;padding:18px 20px;border-bottom:1px solid var(--line);
      transition:.22s ease;
    }
    .news-link:last-child{border-bottom:0}.news-link:hover{background:#fdf4ff;color:var(--brand-dark)}
    .news-date{font-size:13px;color:#94a3b8;font-weight:850;white-space:nowrap}.news-title{font-weight:900}.news-arrow{color:#c026d3;font-weight:950}
    .recommend{
      border-radius:30px;padding:24px;background:#111827;color:#fff;box-shadow:var(--shadow-strong);
    }
    .recommend h3{margin:0 0 14px;font-size:23px;font-weight:950}.recommend p{margin:0 0 18px;color:rgba(255,255,255,.72)}
    .rec-list{display:grid;gap:10px}.rec-list a{display:flex;justify-content:space-between;gap:12px;padding:13px 14px;border-radius:16px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.10);transition:.2s}
    .rec-list a:hover{background:rgba(255,255,255,.14);transform:translateX(3px)}
    .faq-wrap{display:grid;grid-template-columns:.82fr 1.18fr;gap:24px}
    .faq-card{border-radius:30px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);overflow:hidden}
    details{border-bottom:1px solid var(--line)}details:last-child{border-bottom:0}
    summary{
      list-style:none;cursor:pointer;padding:20px 22px;font-weight:950;display:flex;justify-content:space-between;gap:18px;
    }
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";font-size:22px;color:var(--brand);line-height:1}
    details[open] summary:after{content:"–"}
    details p{margin:0;padding:0 22px 20px;color:#667085}
    .form-section{padding:58px 0 76px}
    .cta-panel{
      display:grid;grid-template-columns:1fr 430px;gap:26px;align-items:center;
      border-radius:38px;padding:32px;background:
        radial-gradient(circle at 8% 20%,rgba(245,158,11,.16),transparent 26%),
        linear-gradient(135deg,#111827,#1f2937 48%,#581c87);
      color:#fff;box-shadow:var(--shadow-strong);overflow:hidden;
    }
    .cta-panel h2{font-size:clamp(28px,4vw,48px);line-height:1.1;margin:0 0 12px;font-weight:950;letter-spacing:-.045em}
    .cta-panel p{color:rgba(255,255,255,.74);margin:0 0 22px;max-width:680px}
    .contact-form{
      background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.14);border-radius:28px;padding:20px;
      backdrop-filter:blur(14px);
    }
    .field{display:grid;gap:7px;margin-bottom:12px}.field label{font-size:13px;color:rgba(255,255,255,.76);font-weight:800}
    .field input,.field textarea{
      width:100%;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.10);color:#fff;border-radius:16px;padding:12px 14px;outline:0;
    }
    .field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.45)}
    .field input:focus,.field textarea:focus{border-color:rgba(245,158,11,.65);box-shadow:0 0 0 4px rgba(245,158,11,.14)}
    .field textarea{min-height:96px;resize:vertical}
    .site-footer{background:#080b12;color:#fff;padding:42px 0 28px}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:28px;align-items:start}
    .footer-brand{display:flex;align-items:center;gap:12px;font-weight:950;font-size:18px;margin-bottom:12px}
    .footer-brand .brand-mark{box-shadow:none}
    .footer-text{color:rgba(255,255,255,.62);margin:0;max-width:520px}
    .footer-title{font-weight:950;margin-bottom:12px}
    .footer-links{display:grid;gap:9px}.footer-links a{color:rgba(255,255,255,.62);transition:.2s}.footer-links a:hover{color:#fff;transform:translateX(3px)}
    .copyright{border-top:1px solid rgba(255,255,255,.10);margin-top:28px;padding-top:18px;color:rgba(255,255,255,.48);font-size:14px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}
    .floating-cta{
      position:fixed;left:50%;bottom:18px;transform:translateX(-50%);z-index:40;
      display:none;align-items:center;gap:10px;padding:10px 12px 10px 16px;border-radius:999px;
      background:rgba(8,11,18,.88);color:#fff;backdrop-filter:blur(14px);box-shadow:0 16px 54px rgba(8,11,18,.30);
      border:1px solid rgba(255,255,255,.12);
    }
    @media (max-width:1024px){
      .hero-grid{grid-template-columns:1fr;gap:18px}
      .stage{order:-1;min-height:420px}
      .value-stack{grid-template-columns:repeat(3,1fr)}
      .pain-layout,.steps,.security-grid,.news-layout,.faq-wrap,.cta-panel{grid-template-columns:1fr}
      .matrix{grid-template-columns:repeat(2,1fr)}
      .ticket-wrap{grid-template-columns:1fr}
      .search-pill{display:none}
      .cta-panel{padding:26px}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,1180px)}
      .nav-wrap{min-height:68px}
      .brand-text{max-width:230px}
      .mobile-toggle{display:flex}
      .nav-links{
        position:absolute;left:14px;right:14px;top:76px;display:none;flex-direction:column;align-items:stretch;
        padding:12px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);
      }
      .nav-links.open{display:flex}
      .nav-link{justify-content:flex-start}
      .header-actions .btn-primary{display:none}
      .hero{padding:34px 0 32px}
      .hero-shell{padding:18px;border-radius:30px}
      .stage{min-height:390px;border-radius:26px;padding:14px}
      .stage-card{min-height:360px;border-radius:20px;padding:16px}
      .value-stack{grid-template-columns:1fr}
      .section{padding:38px 0}
      .section-head{display:block}
      .compare-row{grid-template-columns:1fr}.versus{margin:auto}
      .security-list{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .floating-cta{display:flex}
    }
    @media (max-width:520px){
      h1{font-size:34px}
      .brand-text{max-width:180px;font-size:15px}
      .hero-actions{display:grid}.hero-actions .btn{width:100%}
      .kpi-grid{grid-template-columns:1fr}
      .matrix{grid-template-columns:1fr}
      .news-link{grid-template-columns:1fr auto;gap:6px}.news-date{grid-column:1 / -1}
      .cta-panel{border-radius:28px;padding:20px}
      .contact-form{padding:16px;border-radius:22px}
      .floating-cta{width:calc(100% - 24px);justify-content:space-between}
    }