/* roulang page: index */
:root{
      --primary:#6D28D9;
      --primary-2:#EC4899;
      --primary-3:#06B6D4;
      --ink:#111827;
      --muted:#667085;
      --soft:#F7F4FF;
      --soft-2:#FDF2F8;
      --bg:#FBFBFE;
      --card:#FFFFFF;
      --border:#E6E7EF;
      --dark:#111022;
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --shadow:0 20px 55px rgba(17,24,39,.10);
      --shadow-sm:0 10px 28px rgba(17,24,39,.08);
      --ring:0 0 0 4px rgba(109,40,217,.16);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at 12% 4%, rgba(236,72,153,.14), transparent 28%),
        radial-gradient(circle at 85% 8%, rgba(6,182,212,.14), transparent 24%),
        linear-gradient(180deg,#fff 0%,var(--bg) 42%,#fff 100%);
      line-height:1.7;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    a:hover{color:var(--primary)}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer;border:0;background:none}
    :focus-visible{outline:none;box-shadow:var(--ring)}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .promo-bar{
      background:linear-gradient(90deg,#1e103f,#3b0764 48%,#0f172a);
      color:#fff;
      font-size:13px;
      letter-spacing:.02em;
    }
    .promo-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:38px}
    .promo-pill{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);padding:4px 10px;border-radius:999px}
    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(180%) blur(18px);
      background:rgba(255,255,255,.86);
      border-bottom:1px solid rgba(230,231,239,.86);
    }
    .nav-main{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .brand{display:flex;align-items:center;gap:12px;min-width:max-content}
    .brand-mark{
      width:42px;height:42px;border-radius:15px;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      color:#fff;display:grid;place-items:center;
      font-weight:900;box-shadow:0 14px 32px rgba(109,40,217,.28);
    }
    .brand-text{font-weight:900;font-size:18px;letter-spacing:-.02em;line-height:1.2}
    .nav-links{display:flex;align-items:center;gap:8px}
    .nav-link{
      display:inline-flex;align-items:center;gap:8px;
      padding:10px 14px;border-radius:999px;
      color:#3f4452;font-weight:700;font-size:14px;
      transition:.22s ease;
    }
    .nav-link:hover,.nav-link.active{background:var(--soft);color:var(--primary)}
    .nav-tools{display:flex;align-items:center;gap:10px;flex:1;justify-content:flex-end}
    .search-box{
      width:min(330px,100%);
      display:flex;align-items:center;gap:8px;
      background:#fff;border:1px solid var(--border);
      border-radius:999px;padding:9px 14px;
      box-shadow:0 10px 24px rgba(17,24,39,.05);
    }
    .search-box input{width:100%;border:0;outline:0;background:transparent;color:var(--ink);font-size:14px}
    .icon-btn{
      width:42px;height:42px;border-radius:999px;
      display:grid;place-items:center;border:1px solid var(--border);
      background:#fff;color:#4b5563;transition:.22s ease;
    }
    .icon-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm);color:var(--primary)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      min-height:46px;padding:0 18px;border-radius:999px;
      font-weight:850;letter-spacing:.01em;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 16px 34px rgba(109,40,217,.26)}
    .btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 22px 44px rgba(109,40,217,.32)}
    .btn-secondary{background:#fff;color:var(--primary);border-color:#d8ccff;box-shadow:0 12px 26px rgba(109,40,217,.10)}
    .btn-secondary:hover{background:var(--soft);transform:translateY(-2px)}
    .btn-dark{background:#111827;color:#fff}
    .btn-dark:hover{background:#000;color:#fff;transform:translateY(-2px)}
    .menu-toggle{display:none}
    .drawer{
      display:none;position:fixed;inset:0;z-index:80;background:rgba(15,23,42,.42);
    }
    .drawer-panel{
      position:absolute;right:14px;top:14px;width:min(360px,calc(100% - 28px));
      background:#fff;border-radius:26px;padding:18px;border:1px solid var(--border);
      box-shadow:var(--shadow);
    }
    .drawer.open{display:block}
    .badge{
      display:inline-flex;align-items:center;gap:7px;
      border:1px solid rgba(109,40,217,.18);
      background:rgba(109,40,217,.08);
      color:var(--primary);border-radius:999px;
      padding:7px 12px;font-size:13px;font-weight:850;
    }
    .section{padding:78px 0}
    .section-tight{padding:54px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:30px}
    .section-kicker{color:var(--primary);font-weight:900;font-size:14px;margin-bottom:8px}
    .section-title{font-size:clamp(28px,4vw,44px);line-height:1.12;font-weight:950;letter-spacing:-.04em;margin:0}
    .section-desc{max-width:660px;color:var(--muted);margin:12px 0 0;font-size:16px}
    .hero{padding:58px 0 74px;position:relative}
    .hero-grid{
      display:grid;grid-template-columns:1fr minmax(360px,520px) 1fr;
      gap:22px;align-items:center;
    }
    .value-stack{display:grid;gap:16px}
    .value-card{
      background:rgba(255,255,255,.82);border:1px solid rgba(230,231,239,.9);
      border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow-sm);
      transition:.24s ease;
    }
    .value-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .value-card strong{display:block;font-size:18px;margin-bottom:6px}
    .value-card p{margin:0;color:var(--muted);font-size:14px}
    .hero-stage{
      position:relative;border-radius:36px;padding:18px;
      background:
        linear-gradient(135deg,rgba(109,40,217,.18),rgba(236,72,153,.16)),
        rgba(255,255,255,.76);
      border:1px solid rgba(255,255,255,.88);
      box-shadow:var(--shadow-glow);
      overflow:hidden;
    }
    .hero-stage:before{
      content:"";position:absolute;width:240px;height:240px;border-radius:999px;
      background:rgba(6,182,212,.18);filter:blur(16px);right:-70px;top:-70px;
    }
    .product-board{
      position:relative;background:#111022;color:#fff;border-radius:28px;
      padding:26px;min-height:560px;overflow:hidden;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
    }
    .product-board:after{
      content:"";position:absolute;inset:auto -40px -70px -40px;height:190px;
      background:radial-gradient(circle,rgba(236,72,153,.32),transparent 62%);
    }
    .h1-title{font-size:clamp(34px,5.2vw,60px);line-height:1.04;font-weight:1000;letter-spacing:-.055em;margin:18px 0 14px}
    .hero-lead{color:#ddd6fe;font-size:16px;margin:0 0 20px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}
    .mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:24px}
    .stat{
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.07);
      border-radius:18px;padding:14px;
    }
    .stat b{display:block;font-size:22px;color:#fff}
    .stat span{display:block;font-size:12px;color:#c4b5fd;margin-top:2px}
    .stage-card{
      margin-top:22px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);
      border-radius:22px;padding:16px;
    }
    .stage-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.14)}
    .stage-row:last-child{border-bottom:0}
    .stage-row span{color:#cbd5e1;font-size:13px}
    .stage-row b{font-size:14px}
    .download-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow-sm)}
    .download-box h3{margin:0 0 10px;font-size:20px}
    .download-box p{margin:0 0 16px;color:var(--muted);font-size:14px}
    .check-list{display:grid;gap:10px;margin:16px 0 0;padding:0;list-style:none}
    .check-list li{display:flex;gap:10px;align-items:flex-start;color:#475467;font-size:14px}
    .check-dot{width:20px;height:20px;border-radius:999px;display:grid;place-items:center;flex:0 0 auto;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;font-size:12px}
    .vertical-wrap{
      display:grid;grid-template-columns:.82fr 1.18fr;gap:26px;align-items:stretch;
    }
    .poster{
      border-radius:34px;min-height:520px;padding:28px;color:#fff;
      background:
        linear-gradient(180deg,rgba(17,16,34,.12),rgba(17,16,34,.84)),
        radial-gradient(circle at 30% 0%,rgba(236,72,153,.8),transparent 35%),
        linear-gradient(135deg,#6d28d9,#111022);
      box-shadow:var(--shadow);display:flex;flex-direction:column;justify-content:space-between;
    }
    .poster h2{font-size:42px;line-height:1.08;font-weight:1000;letter-spacing:-.04em;margin:14px 0}
    .poster p{color:#ede9fe;margin:0;max-width:420px}
    .seed-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .seed-card,.hot-card,.review-card,.news-panel,.price-card,.faq-item,.proof-card{
      background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
      box-shadow:var(--shadow-sm);transition:.22s ease;
    }
    .seed-card:hover,.hot-card:hover,.review-card:hover,.price-card:hover,.proof-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .seed-card{padding:20px;min-height:200px}
    .seed-icon{width:46px;height:46px;border-radius:16px;display:grid;place-items:center;background:var(--soft);color:var(--primary);font-weight:900;margin-bottom:18px}
    .seed-card h3,.hot-card h3,.review-card h3,.price-card h3{margin:0 0 8px;font-size:20px;font-weight:950}
    .seed-card p,.hot-card p,.review-card p,.price-card p{margin:0;color:var(--muted);font-size:14px}
    .hot-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
    .hot-card{padding:22px;position:relative;overflow:hidden}
    .hot-card.featured{
      min-height:360px;background:
        linear-gradient(135deg,rgba(109,40,217,.92),rgba(236,72,153,.86)),
        #6d28d9;color:#fff;
    }
    .hot-card.featured p{color:#f5e8ff}
    .hot-tag{display:inline-flex;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.18);color:#fff;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:900;margin-bottom:14px}
    .hot-list{display:grid;gap:14px}
    .rank-item{
      display:grid;grid-template-columns:44px 1fr auto;gap:14px;align-items:center;
      background:#fff;border:1px solid var(--border);border-radius:20px;padding:16px;
    }
    .rank-no{width:38px;height:38px;border-radius:14px;background:var(--soft-2);color:var(--primary-2);display:grid;place-items:center;font-weight:1000}
    .rank-item strong{display:block}
    .rank-item span{display:block;color:var(--muted);font-size:13px;margin-top:2px}
    .rank-badge{font-size:12px;color:#059669;background:#ECFDF3;border-radius:999px;padding:5px 9px;font-weight:900}
    .proof-strip{
      display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px;
    }
    .proof-card{padding:18px;text-align:center}
    .proof-card b{display:block;font-size:28px;font-weight:1000;color:var(--primary)}
    .proof-card span{color:var(--muted);font-size:13px}
    .reviews{
      background:linear-gradient(180deg,#111022,#1b1234);
      color:#fff;border-radius:40px;padding:50px;
      box-shadow:var(--shadow);
    }
    .reviews .section-desc{color:#c4b5fd}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}
    .review-card{padding:22px;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.12);color:#fff}
    .review-card p{color:#e9d5ff}
    .stars{color:#fbbf24;letter-spacing:2px;margin-bottom:12px}
    .reviewer{display:flex;align-items:center;gap:10px;margin-top:18px}
    .avatar{width:38px;height:38px;border-radius:999px;background:linear-gradient(135deg,#06b6d4,#8b5cf6);display:grid;place-items:center;font-weight:900}
    .news-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:24px}
    .news-panel{padding:24px}
    .news-list{display:grid;gap:0;margin:0;padding:0;list-style:none}
    .news-list li{border-bottom:1px solid var(--border)}
    .news-list li:last-child{border-bottom:0}
    .news-link{
      display:grid;grid-template-columns:120px 1fr;gap:18px;padding:18px 0;
      transition:.22s ease;
    }
    .news-link:hover{transform:translateX(4px);color:var(--primary)}
    .news-date{font-weight:900;color:var(--primary);font-size:14px}
    .news-link strong{display:block;margin-bottom:4px;font-size:17px}
    .news-link span{display:block;color:var(--muted);font-size:14px}
    .recommend-box{
      border-radius:28px;padding:24px;background:
      linear-gradient(135deg,rgba(109,40,217,.10),rgba(236,72,153,.10)),#fff;
      border:1px solid var(--border);box-shadow:var(--shadow-sm);
    }
    .topic-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .topic-tags a{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--border);font-size:13px;font-weight:800;color:#475467}
    .topic-tags a:hover{border-color:#c4b5fd;color:var(--primary);box-shadow:var(--shadow-sm)}
    .countdown{
      display:grid;grid-template-columns:1fr auto;gap:22px;align-items:center;
      padding:24px;border-radius:30px;
      background:linear-gradient(135deg,#6d28d9,#ec4899);
      color:#fff;box-shadow:var(--shadow-glow);margin-bottom:24px;
    }
    .time-boxes{display:flex;gap:8px}
    .time-box{min-width:68px;text-align:center;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.18);border-radius:16px;padding:10px}
    .time-box b{display:block;font-size:22px}
    .time-box span{font-size:12px;color:#f3e8ff}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .price-card{padding:24px;position:relative}
    .price-card.popular{border-color:#c4b5fd;box-shadow:var(--shadow);transform:translateY(-8px)}
    .price{font-size:36px;font-weight:1000;letter-spacing:-.04em;margin:14px 0 4px}
    .price small{font-size:14px;color:var(--muted);font-weight:800}
    .feature-list{list-style:none;margin:18px 0 22px;padding:0;display:grid;gap:10px}
    .feature-list li{display:flex;gap:10px;align-items:flex-start;color:#475467;font-size:14px}
    .faq-grid{display:grid;grid-template-columns:.88fr 1.12fr;gap:24px;align-items:start}
    .faq-item{padding:20px;margin-bottom:14px}
    .faq-item h3{margin:0 0 8px;font-size:18px;font-weight:950}
    .faq-item p{margin:0;color:var(--muted);font-size:14px}
    .cta-band{
      border-radius:38px;padding:40px;
      background:
        radial-gradient(circle at 84% 20%,rgba(6,182,212,.22),transparent 26%),
        linear-gradient(135deg,#111827,#2e1065);
      color:#fff;display:grid;grid-template-columns:1fr auto;gap:22px;align-items:center;
      box-shadow:var(--shadow);
    }
    .cta-band h2{font-size:clamp(28px,4vw,44px);line-height:1.12;margin:0 0 12px;font-weight:1000;letter-spacing:-.04em}
    .cta-band p{margin:0;color:#ddd6fe;max-width:690px}
    .site-footer{background:#0b1020;color:#cbd5e1;padding:54px 0 28px;margin-top:50px}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:28px}
    .footer-title{color:#fff;font-weight:1000;font-size:18px;margin-bottom:12px}
    .footer-text{color:#94a3b8;margin:0;max-width:520px;font-size:14px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:#cbd5e1;font-size:14px}
    .footer-links a:hover{color:#fff}
    .copyright{border-top:1px solid rgba(255,255,255,.10);margin-top:34px;padding-top:20px;color:#94a3b8;font-size:13px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
    .float-cta{
      position:fixed;left:50%;bottom:18px;transform:translateX(-50%);
      width:min(760px,calc(100% - 28px));z-index:45;
      background:rgba(255,255,255,.92);backdrop-filter:blur(16px);
      border:1px solid var(--border);border-radius:999px;padding:10px 12px 10px 18px;
      box-shadow:0 18px 42px rgba(17,24,39,.18);
      display:flex;align-items:center;justify-content:space-between;gap:14px;
    }
    .float-cta span{font-size:14px;color:#475467}
    @media (max-width:1024px){
      .hero-grid,.vertical-wrap,.hot-layout,.news-layout,.faq-grid{grid-template-columns:1fr}
      .hero-stage{order:-1}
      .product-board{min-height:auto}
      .nav-links,.search-box,.nav-tools .icon-btn,.nav-tools .btn-primary{display:none}
      .menu-toggle{display:grid}
      .review-grid,.price-grid{grid-template-columns:1fr}
      .price-card.popular{transform:none}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,1180px)}
      .promo-inner{justify-content:center;text-align:center}
      .promo-inner > span:last-child{display:none}
      .section{padding:54px 0}
      .section-head{display:block}
      .hero{padding:36px 0 54px}
      .seed-grid,.proof-strip{grid-template-columns:1fr}
      .mini-stats{grid-template-columns:1fr}
      .reviews{padding:28px;border-radius:28px}
      .news-link{grid-template-columns:1fr;gap:4px}
      .countdown,.cta-band{grid-template-columns:1fr}
      .time-boxes{flex-wrap:wrap}
      .footer-grid{grid-template-columns:1fr}
      .float-cta{border-radius:24px;align-items:flex-start;flex-direction:column}
      .float-cta .btn{width:100%}
    }
    @media (max-width:520px){
      .brand-text{font-size:15px;max-width:190px}
      .nav-main{min-height:66px}
      .h1-title{font-size:34px}
      .poster{min-height:430px;padding:22px;border-radius:28px}
      .poster h2{font-size:32px}
      .product-board{padding:20px;border-radius:24px}
      .hero-actions .btn{width:100%}
      .rank-item{grid-template-columns:38px 1fr}
      .rank-badge{grid-column:2}
      .section-title{font-size:28px}
    }