/* roulang page: index */
:root{
      --primary:#ff5a3d;
      --primary-strong:#e63d21;
      --primary-soft:#fff1ed;
      --secondary:#6d5dfc;
      --accent:#12b886;
      --ink:#171923;
      --muted:#697386;
      --weak:#98a2b3;
      --line:#e8edf3;
      --bg:#fffaf6;
      --panel:#ffffff;
      --panel-2:#f7f8fc;
      --dark:#111827;
      --radius-xs:10px;
      --radius-sm:14px;
      --radius:22px;
      --radius-lg:32px;
      --shadow-sm:0 10px 30px rgba(17,24,39,.08);
      --shadow:0 20px 60px rgba(17,24,39,.12);
      --shadow-glow:0 26px 70px rgba(255,90,61,.22);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at 12% 8%, rgba(255,90,61,.14), transparent 34%),
        radial-gradient(circle at 86% 10%, rgba(109,93,252,.12), transparent 30%),
        linear-gradient(180deg,#fffaf6 0%,#ffffff 38%,#f8fafc 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,box-shadow .2s ease,transform .2s ease}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0}
    ::selection{background:rgba(255,90,61,.18);color:var(--ink)}
    .container{
      width:min(var(--container), calc(100% - 40px));
      margin-inline:auto;
    }
    .skip-link{
      position:absolute;left:-999px;top:12px;z-index:99;
      padding:10px 14px;border-radius:12px;background:var(--dark);color:#fff;
    }
    .skip-link:focus{left:18px;outline:3px solid rgba(255,90,61,.38)}
    .site-header{
      position:sticky;
      top:14px;
      z-index:50;
      padding:14px 0 4px;
    }
    .nav-shell{
      width:min(1180px, calc(100% - 40px));
      margin:0 auto;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:12px 14px 12px 18px;
      background:rgba(255,255,255,.82);
      border:1px solid rgba(232,237,243,.92);
      border-radius:999px;
      box-shadow:0 18px 48px rgba(17,24,39,.09);
      backdrop-filter:blur(18px);
    }
    .brand{
      display:flex;align-items:center;gap:10px;min-width:0;
      font-weight:900;letter-spacing:-.02em;color:var(--ink);
    }
    .brand-mark{
      width:38px;height:38px;border-radius:14px;
      display:grid;place-items:center;
      color:#fff;font-weight:900;
      background:linear-gradient(135deg,var(--primary),#ffb347);
      box-shadow:0 12px 24px rgba(255,90,61,.28);
      flex:0 0 auto;
    }
    .brand-text{
      overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
      max-width:330px;font-size:15px;
    }
    .nav-links{display:flex;align-items:center;gap:6px}
    .nav-link{
      padding:9px 16px;border-radius:999px;
      color:#526071;font-weight:800;font-size:14px;
    }
    .nav-link:hover,.nav-link.active{
      background:var(--primary-soft);color:var(--primary-strong);
    }
    .nav-action{
      display:flex;align-items:center;gap:10px;
    }
    .mini-search{
      display:flex;align-items:center;gap:8px;
      min-width:210px;
      padding:8px 12px;border:1px solid var(--line);
      border-radius:999px;background:#fff;color:var(--weak);
    }
    .mini-search input{
      width:100%;border:0;outline:0;background:transparent;color:var(--ink);
      font-size:13px;
    }
    .mini-search:focus-within{border-color:rgba(255,90,61,.55);box-shadow:0 0 0 4px rgba(255,90,61,.12)}
    .nav-toggle{
      display:none;width:42px;height:42px;border-radius:15px;
      background:var(--dark);color:#fff;align-items:center;justify-content:center;
    }
    .mobile-panel{
      display:none;
      width:min(1180px, calc(100% - 40px));
      margin:10px auto 0;
      padding:12px;
      border-radius:22px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.96);
      box-shadow:var(--shadow-sm);
    }
    .mobile-panel.open{display:block}
    .mobile-panel .nav-link{display:block;margin:4px 0}
    .section{padding:76px 0}
    .section-tight{padding:50px 0}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;
      background:#fff;border:1px solid var(--line);
      box-shadow:0 10px 26px rgba(17,24,39,.05);
      color:var(--primary-strong);font-weight:900;font-size:13px;
    }
    .eyebrow-dot{width:8px;height:8px;border-radius:99px;background:var(--accent);box-shadow:0 0 0 5px rgba(18,184,134,.12)}
    .section-head{
      display:flex;align-items:flex-end;justify-content:space-between;
      gap:28px;margin-bottom:26px;
    }
    .section-title{
      font-size:clamp(28px,4vw,46px);
      line-height:1.16;font-weight:950;letter-spacing:-.045em;
      margin:12px 0 0;color:var(--ink);
    }
    .section-desc{
      max-width:670px;color:var(--muted);font-size:16px;margin-top:12px;
    }
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      min-height:46px;padding:12px 18px;border-radius:999px;
      font-weight:900;letter-spacing:-.01em;
      transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
      outline:none;white-space:nowrap;
    }
    .btn:focus-visible{box-shadow:0 0 0 4px rgba(255,90,61,.22),0 0 0 1px var(--primary)}
    .btn-primary{
      background:linear-gradient(135deg,var(--primary),#ff9b3d);
      color:#fff;box-shadow:0 16px 36px rgba(255,90,61,.28);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow)}
    .btn-dark{background:var(--dark);color:#fff;box-shadow:0 16px 34px rgba(17,24,39,.18)}
    .btn-dark:hover{transform:translateY(-2px);background:#000}
    .btn-soft{background:#fff;color:var(--ink);border:1px solid var(--line)}
    .btn-soft:hover{border-color:rgba(255,90,61,.42);color:var(--primary-strong);transform:translateY(-2px)}
    .badge{
      display:inline-flex;align-items:center;gap:6px;
      padding:6px 10px;border-radius:999px;
      font-size:12px;font-weight:900;
      background:var(--panel-2);color:#4b5563;border:1px solid var(--line);
    }
    .badge-hot{background:#fff1ed;color:var(--primary-strong);border-color:#ffd9cf}
    .badge-green{background:#eafaf3;color:#087f5b;border-color:#c4f1df}
    .hero{
      padding:42px 0 70px;
    }
    .hero-stage{
      position:relative;
      overflow:hidden;
      border-radius:42px;
      padding:42px;
      border:1px solid rgba(255,255,255,.82);
      background:
        linear-gradient(135deg,rgba(255,255,255,.92),rgba(255,247,237,.88)),
        radial-gradient(circle at 70% 30%, rgba(255,90,61,.22), transparent 36%);
      box-shadow:var(--shadow);
    }
    .hero-stage:before{
      content:"";
      position:absolute;inset:auto -120px -160px auto;
      width:420px;height:420px;border-radius:50%;
      background:linear-gradient(135deg,rgba(109,93,252,.16),rgba(18,184,134,.14));
      filter:blur(4px);
    }
    .hero-top{
      position:relative;z-index:1;
      display:grid;
      grid-template-columns:1.04fr .96fr;
      gap:28px;
      align-items:stretch;
    }
    .hero-copy{
      padding:12px 0;
    }
    h1{
      margin:16px 0 18px;
      font-size:clamp(38px,6.2vw,76px);
      line-height:1.02;
      letter-spacing:-.07em;
      font-weight:950;
      color:var(--ink);
    }
    .hero-intro{
      max-width:720px;
      color:#526071;
      font-size:18px;
      line-height:1.9;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
    .hero-points{
      margin-top:26px;
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
    }
    .point{
      padding:14px;border-radius:18px;background:rgba(255,255,255,.72);
      border:1px solid rgba(232,237,243,.92);
    }
    .point strong{display:block;font-size:22px;line-height:1;font-weight:950;color:var(--ink)}
    .point span{font-size:12px;color:var(--muted);font-weight:800}
    .choice-stack{
      display:grid;
      grid-template-columns:1fr;
      gap:14px;
    }
    .choice-card{
      position:relative;
      border-radius:26px;
      background:rgba(255,255,255,.78);
      border:1px solid rgba(232,237,243,.95);
      padding:20px;
      box-shadow:0 14px 38px rgba(17,24,39,.07);
      transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
    }
    .choice-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(255,90,61,.34)}
    .choice-card.recommended{
      background:linear-gradient(135deg,#111827,#2b1f1a);
      color:#fff;
      border-color:rgba(255,255,255,.18);
      box-shadow:0 24px 64px rgba(17,24,39,.28);
      order:-1;
    }
    .choice-card.recommended p,.choice-card.recommended .choice-meta{color:rgba(255,255,255,.74)}
    .choice-card h3{font-size:20px;font-weight:950;margin:10px 0 8px;letter-spacing:-.02em}
    .choice-card p{color:var(--muted);font-size:14px;margin:0}
    .choice-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:16px;color:var(--muted);font-weight:900;font-size:13px}
    .choice-score{
      width:48px;height:48px;border-radius:16px;display:grid;place-items:center;
      background:var(--primary-soft);color:var(--primary-strong);font-weight:950;
    }
    .recommended .choice-score{background:linear-gradient(135deg,var(--primary),#ffb347);color:#fff}
    .tier-wrap{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:22px;
      align-items:stretch;
    }
    .progress-panel{
      border-radius:30px;
      padding:28px;
      color:#fff;
      background:
        radial-gradient(circle at 25% 15%, rgba(255,255,255,.22), transparent 28%),
        linear-gradient(135deg,#ff5a3d,#fb8c00);
      box-shadow:var(--shadow-glow);
    }
    .progress-line{
      position:relative;
      height:12px;border-radius:99px;background:rgba(255,255,255,.28);
      overflow:hidden;margin:22px 0 14px;
    }
    .progress-line span{
      display:block;height:100%;width:68%;border-radius:99px;
      background:#fff;box-shadow:0 0 22px rgba(255,255,255,.5);
    }
    .tier-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:14px;
    }
    .tier-card{
      border-radius:24px;
      padding:20px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      min-height:210px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      transition:transform .2s ease,box-shadow .2s ease;
    }
    .tier-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .tier-card h3{font-size:18px;font-weight:950;margin:12px 0 8px}
    .tier-card p{font-size:14px;color:var(--muted);margin:0}
    .tier-num{font-size:34px;font-weight:950;letter-spacing:-.05em;line-height:1}
    .compare-shell{
      border:1px solid var(--line);
      border-radius:32px;
      overflow:hidden;
      background:#fff;
      box-shadow:var(--shadow-sm);
    }
    .compare-grid{
      display:grid;
      grid-template-columns:1.05fr repeat(3,1fr);
    }
    .compare-cell{
      padding:18px 20px;
      border-right:1px solid var(--line);
      border-bottom:1px solid var(--line);
      min-height:74px;
    }
    .compare-cell:nth-child(4n){border-right:0}
    .compare-head{
      background:#111827;color:#fff;
      min-height:120px;
    }
    .compare-head.highlight{
      background:linear-gradient(135deg,var(--primary),#ff9b3d);
      box-shadow:inset 0 -1px 0 rgba(255,255,255,.2);
    }
    .compare-cell strong{font-weight:950}
    .check{color:var(--accent);font-weight:950}
    .dash{color:var(--weak);font-weight:950}
    .security-strip{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
      padding:18px;
      border-radius:32px;
      background:#111827;
      color:#fff;
      box-shadow:var(--shadow);
    }
    .security-item{
      padding:18px;
      border-radius:22px;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.1);
    }
    .security-icon{
      width:42px;height:42px;border-radius:16px;
      display:grid;place-items:center;
      background:rgba(255,90,61,.18);
      color:#ffb199;
      margin-bottom:14px;
    }
    .security-item h3{font-weight:950;margin:0 0 6px;font-size:16px}
    .security-item p{margin:0;color:rgba(255,255,255,.68);font-size:13px;line-height:1.7}
    .news-layout{
      display:grid;
      grid-template-columns:1.35fr .65fr;
      gap:22px;
      align-items:start;
    }
    .news-list{
      border-radius:30px;background:#fff;border:1px solid var(--line);
      box-shadow:var(--shadow-sm);overflow:hidden;
    }
    .news-item{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:16px;
      align-items:center;
      padding:18px 20px;
      border-bottom:1px solid var(--line);
    }
    .news-item:last-child{border-bottom:0}
    .news-item:hover{background:#fffaf6}
    .news-date{
      width:54px;height:54px;border-radius:18px;
      background:var(--panel-2);
      display:grid;place-items:center;
      color:var(--primary-strong);font-weight:950;
    }
    .news-item h3{font-weight:950;margin:0 0 4px;font-size:17px}
    .news-item p{margin:0;color:var(--muted);font-size:13px}
    .arrow{color:var(--weak);font-weight:950}
    .recommend-panel{
      position:sticky;top:106px;
      border-radius:30px;
      padding:24px;
      color:#fff;
      background:
        radial-gradient(circle at 80% 12%,rgba(255,255,255,.18),transparent 30%),
        linear-gradient(145deg,#6d5dfc,#302b63);
      box-shadow:0 24px 56px rgba(109,93,252,.24);
    }
    .recommend-panel h3{font-size:24px;font-weight:950;line-height:1.2;margin:12px 0}
    .recommend-panel p{color:rgba(255,255,255,.76);font-size:14px}
    .mini-list{display:grid;gap:10px;margin-top:18px}
    .mini-list li{
      list-style:none;
      padding:10px 12px;border-radius:16px;background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.13);font-size:13px;
    }
    .faq-grid{
      display:grid;
      grid-template-columns:.75fr 1.25fr;
      gap:22px;
      align-items:start;
    }
    .faq-card{
      border-radius:30px;background:#fff;border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      overflow:hidden;
    }
    .faq-item{
      padding:22px 24px;border-bottom:1px solid var(--line);
    }
    .faq-item:last-child{border-bottom:0}
    .faq-item h3{font-size:18px;font-weight:950;margin:0 0 8px}
    .faq-item p{margin:0;color:var(--muted);font-size:14px}
    .faq-aside{
      border-radius:30px;padding:26px;background:#fff7ed;border:1px solid #fed7aa;
    }
    .faq-aside h3{font-size:24px;font-weight:950;margin:0 0 10px}
    .faq-aside p{color:#7c4a20;margin:0 0 18px}
    .cta-section{padding:78px 0 88px}
    .cta-box{
      display:grid;
      grid-template-columns:1fr .9fr;
      gap:28px;
      align-items:center;
      border-radius:40px;
      padding:34px;
      color:#fff;
      background:
        radial-gradient(circle at 18% 15%, rgba(255,255,255,.2), transparent 26%),
        radial-gradient(circle at 88% 60%, rgba(255,178,71,.24), transparent 28%),
        linear-gradient(135deg,#111827,#20131a 58%,#411b12);
      box-shadow:0 28px 80px rgba(17,24,39,.26);
      overflow:hidden;
      position:relative;
    }
    .cta-box:after{
      content:"";
      position:absolute;right:-90px;top:-90px;width:240px;height:240px;border-radius:50%;
      border:38px solid rgba(255,255,255,.08);
    }
    .cta-content,.lead-form{position:relative;z-index:1}
    .countdown{
      display:flex;gap:10px;flex-wrap:wrap;margin:22px 0;
    }
    .time-chip{
      min-width:78px;padding:12px;border-radius:18px;background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.12);text-align:center;
    }
    .time-chip strong{display:block;font-size:24px;font-weight:950;line-height:1}
    .time-chip span{font-size:12px;color:rgba(255,255,255,.65)}
    .lead-form{
      background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.14);
      border-radius:28px;
      padding:22px;
      backdrop-filter:blur(16px);
    }
    .form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .field{margin-bottom:12px}
    .field label{display:block;font-size:13px;font-weight:900;color:rgba(255,255,255,.82);margin-bottom:7px}
    .field input,.field select{
      width:100%;
      border:1px solid rgba(255,255,255,.16);
      background:rgba(255,255,255,.12);
      color:#fff;
      border-radius:16px;
      padding:12px 14px;
      outline:none;
    }
    .field select option{color:#111827}
    .field input::placeholder{color:rgba(255,255,255,.48)}
    .field input:focus,.field select:focus{border-color:rgba(255,154,61,.9);box-shadow:0 0 0 4px rgba(255,90,61,.18)}
    .privacy{
      margin-top:12px;color:rgba(255,255,255,.62);font-size:12px;line-height:1.7;
    }
    .form-message{
      display:none;margin-top:12px;padding:10px 12px;border-radius:14px;
      background:rgba(18,184,134,.18);border:1px solid rgba(18,184,134,.28);color:#d3fff0;font-size:13px;
    }
    .site-footer{
      padding:46px 0 30px;
      background:#0f172a;
      color:#fff;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1fr auto;
      gap:24px;
      align-items:start;
    }
    .footer-brand{
      display:flex;align-items:center;gap:12px;font-weight:950;margin-bottom:12px;
    }
    .footer-brand .brand-mark{width:42px;height:42px}
    .footer-desc{max-width:720px;color:rgba(255,255,255,.64);font-size:14px;margin:0}
    .footer-links{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}
    .footer-links a{
      padding:9px 12px;border-radius:999px;background:rgba(255,255,255,.06);
      color:rgba(255,255,255,.74);font-size:13px;font-weight:800;
    }
    .footer-links a:hover{background:rgba(255,90,61,.2);color:#fff}
    .copyright{
      margin-top:28px;
      padding-top:20px;
      border-top:1px solid rgba(255,255,255,.1);
      color:rgba(255,255,255,.48);
      font-size:13px;
      display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
    }
    @media (max-width:1024px){
      .hero-stage{padding:32px}
      .hero-top,.tier-wrap,.news-layout,.faq-grid,.cta-box{grid-template-columns:1fr}
      .recommend-panel{position:relative;top:auto}
      .security-strip{grid-template-columns:repeat(2,1fr)}
      .compare-grid{grid-template-columns:1fr 1fr}
      .compare-cell:nth-child(4n){border-right:1px solid var(--line)}
      .compare-cell:nth-child(2n){border-right:0}
      .compare-head{min-height:96px}
    }
    @media (max-width:768px){
      .container,.nav-shell,.mobile-panel{width:min(100% - 28px, var(--container))}
      .site-header{top:8px;padding-top:8px}
      .nav-links,.mini-search,.nav-action .btn{display:none}
      .nav-toggle{display:flex}
      .brand-text{max-width:210px}
      .hero{padding-top:24px}
      .hero-stage{border-radius:30px;padding:24px}
      .hero-points,.tier-grid{grid-template-columns:1fr}
      .section{padding:56px 0}
      .section-head{display:block}
      .news-item{grid-template-columns:auto 1fr;gap:12px}
      .news-item .arrow{display:none}
      .form-row{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width:520px){
      .nav-shell{border-radius:24px}
      .brand-mark{width:34px;height:34px;border-radius:12px}
      .brand-text{max-width:168px;font-size:13px}
      h1{font-size:38px;letter-spacing:-.055em}
      .hero-intro{font-size:16px}
      .hero-actions .btn{width:100%}
      .choice-card,.tier-card,.faq-item{padding:18px}
      .security-strip{grid-template-columns:1fr;padding:12px;border-radius:26px}
      .compare-grid{display:block}
      .compare-cell{border-right:0}
      .compare-head{min-height:auto}
      .cta-box{padding:22px;border-radius:30px}
      .countdown{display:grid;grid-template-columns:1fr 1fr}
      .section-title{font-size:30px}
    }