/* roulang page: index */
:root{
      --primary:#2563eb;
      --primary-700:#1d4ed8;
      --primary-50:#eff6ff;
      --secondary:#0ea5e9;
      --ink:#0f172a;
      --muted:#64748b;
      --soft:#f8fafc;
      --panel:#ffffff;
      --line:#e2e8f0;
      --line-strong:#cbd5e1;
      --success:#10b981;
      --warning:#f59e0b;
      --danger:#ef4444;
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:30px;
      --shadow-sm:0 10px 24px rgba(15,23,42,.08);
      --shadow:0 24px 60px rgba(15,23,42,.12);
      --shadow-blue:0 24px 70px rgba(37,99,235,.20);
      --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(--ink);
      background:
        radial-gradient(circle at top left, rgba(37,99,235,.10), transparent 34rem),
        linear-gradient(180deg,#ffffff 0%,#f8fafc 48%,#ffffff 100%);
      line-height:1.75;
      min-width:320px;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none;transition:color .2s ease, opacity .2s ease, transform .2s ease}
    a:hover{color:var(--primary)}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(37,99,235,.18);color:var(--ink)}
    .container-custom{max-width:var(--container);margin:0 auto;padding:0 22px}
    .section{padding:82px 0}
    .section-tight{padding:62px 0}
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border:1px solid rgba(37,99,235,.16);
      background:rgba(37,99,235,.07);
      color:var(--primary-700);
      border-radius:999px;
      font-size:14px;
      font-weight:700;
      margin-bottom:16px;
    }
    .section-title{
      font-size:clamp(28px,3.2vw,46px);
      line-height:1.18;
      letter-spacing:-.04em;
      margin:0 0 16px;
      font-weight:850;
    }
    .section-desc{
      color:var(--muted);
      font-size:17px;
      max-width:760px;
      margin:0;
    }
    .text-center .section-desc{margin-left:auto;margin-right:auto}
    .btn-brand{
      --bs-btn-padding-x:22px;
      --bs-btn-padding-y:12px;
      --bs-btn-border-radius:999px;
      --bs-btn-font-weight:800;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      border:0;
      box-shadow:0 14px 30px rgba(37,99,235,.24);
      transition:transform .18s ease, box-shadow .18s ease, filter .18s ease;
    }
    .btn-brand:hover,.btn-brand:focus{
      color:#fff;
      transform:translateY(-2px);
      filter:saturate(1.05);
      box-shadow:0 20px 40px rgba(37,99,235,.30);
    }
    .btn-soft{
      --bs-btn-padding-x:20px;
      --bs-btn-padding-y:11px;
      --bs-btn-border-radius:999px;
      --bs-btn-font-weight:800;
      color:var(--primary-700);
      background:#fff;
      border:1px solid rgba(37,99,235,.18);
      box-shadow:var(--shadow-sm);
    }
    .btn-soft:hover,.btn-soft:focus{
      color:var(--primary-700);
      background:var(--primary-50);
      border-color:rgba(37,99,235,.30);
      transform:translateY(-2px);
    }
    .btn-link-clean{
      display:inline-flex;
      align-items:center;
      gap:8px;
      font-weight:800;
      color:var(--primary-700);
    }
    .btn-link-clean:hover{gap:12px;color:var(--primary)}
    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 10px;
      border-radius:999px;
      background:#f1f5f9;
      color:#334155;
      border:1px solid var(--line);
      font-size:13px;
      font-weight:750;
    }

    .topbar{
      background:#0f172a;
      color:#cbd5e1;
      font-size:13px;
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .topbar-inner{
      min-height:38px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
    }
    .topbar strong{color:#fff;font-weight:800}
    .topbar-actions{display:flex;align-items:center;gap:14px;white-space:nowrap}
    .topbar-actions a{color:#dbeafe;font-weight:700}
    .topbar-actions a:hover{color:#fff}

    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(255,255,255,.88);
      backdrop-filter:saturate(160%) blur(16px);
      border-bottom:1px solid rgba(226,232,240,.86);
    }
    .navbar-custom{
      min-height:76px;
      padding:0;
    }
    .brand-logo{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      color:var(--ink);
      font-weight:900;
      letter-spacing:-.03em;
    }
    .brand-mark{
      width:42px;height:42px;border-radius:14px;
      display:grid;place-items:center;
      color:#fff;
      background:linear-gradient(145deg,#2563eb,#0ea5e9);
      box-shadow:0 12px 26px rgba(37,99,235,.28);
      flex:0 0 auto;
      font-weight:900;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.15;
      max-width:360px;
    }
    .brand-text span:first-child{
      font-size:17px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-text span:last-child{
      margin-top:4px;
      font-size:12px;
      color:var(--muted);
      font-weight:750;
      letter-spacing:0;
    }
    .navbar-toggler{
      border:1px solid var(--line);
      border-radius:12px;
      padding:8px 10px;
      box-shadow:none!important;
      background:#fff;
    }
    .navbar-toggler:focus{outline:3px solid rgba(37,99,235,.18)}
    .nav-main{
      gap:8px;
      align-items:center;
    }
    .nav-main .nav-link{
      color:#334155;
      font-weight:800;
      border-radius:999px;
      padding:9px 14px!important;
    }
    .nav-main .nav-link:hover{
      color:var(--primary-700);
      background:var(--primary-50);
    }
    .nav-main .nav-link.active{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 10px 22px rgba(37,99,235,.22);
    }
    .nav-search{
      display:flex;
      align-items:center;
      gap:8px;
      width:230px;
      padding:7px 10px;
      border:1px solid var(--line);
      border-radius:999px;
      background:#fff;
      transition:border-color .18s ease, box-shadow .18s ease;
    }
    .nav-search:focus-within{
      border-color:rgba(37,99,235,.45);
      box-shadow:0 0 0 4px rgba(37,99,235,.10);
    }
    .nav-search input{
      border:0;
      outline:0;
      min-width:0;
      width:100%;
      color:var(--ink);
      font-size:14px;
      background:transparent;
    }
    .nav-search span{color:var(--muted)}
    .header-cta{margin-left:8px}

    .hero{
      position:relative;
      overflow:hidden;
      padding:74px 0 68px;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:18px 22px auto;
      height:520px;
      border-radius:42px;
      background:
        linear-gradient(110deg,rgba(37,99,235,.12),rgba(14,165,233,.07) 52%,rgba(255,255,255,.4)),
        radial-gradient(circle at 80% 18%,rgba(14,165,233,.24),transparent 20rem);
      z-index:-2;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:1.02fr .98fr;
      gap:38px;
      align-items:center;
    }
    .hero-content{
      padding:34px 0;
    }
    .hero h1{
      font-size:clamp(38px,5.5vw,70px);
      line-height:1.05;
      letter-spacing:-.06em;
      font-weight:900;
      margin:0 0 22px;
    }
    .hero-lead{
      color:#475569;
      font-size:18px;
      max-width:700px;
      margin:0 0 26px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      align-items:center;
      margin-bottom:26px;
    }
    .hero-notes{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      max-width:680px;
    }
    .note-card{
      padding:14px 15px;
      border-radius:18px;
      background:rgba(255,255,255,.82);
      border:1px solid rgba(226,232,240,.86);
      box-shadow:0 10px 28px rgba(15,23,42,.06);
    }
    .note-card strong{
      display:block;
      font-size:20px;
      line-height:1.1;
      color:var(--primary-700);
      margin-bottom:4px;
    }
    .note-card span{
      color:#64748b;
      font-size:13px;
      font-weight:700;
    }

    .vertical-stage{
      position:relative;
      min-height:560px;
      display:grid;
      place-items:center;
      padding:24px;
    }
    .reel-frame{
      width:min(330px,88vw);
      height:520px;
      border-radius:38px;
      padding:14px;
      background:linear-gradient(180deg,#ffffff,#eff6ff);
      border:1px solid rgba(37,99,235,.16);
      box-shadow:var(--shadow-blue);
      position:relative;
      transform:rotate(1deg);
    }
    .reel-inner{
      height:100%;
      border-radius:28px;
      overflow:hidden;
      position:relative;
      background:
        linear-gradient(180deg,rgba(15,23,42,.18),rgba(15,23,42,.52)),
        radial-gradient(circle at 50% 20%,#93c5fd,transparent 13rem),
        linear-gradient(145deg,#1e3a8a,#0f172a);
    }
    .reel-bars{
      position:absolute;
      left:18px;right:18px;top:18px;
      display:flex;gap:6px;
    }
    .reel-bars span{
      flex:1;height:4px;border-radius:999px;background:rgba(255,255,255,.45);
    }
    .reel-content{
      position:absolute;
      left:20px;right:20px;bottom:22px;
      color:#fff;
    }
    .reel-content .badge-soft{
      background:rgba(255,255,255,.16);
      border-color:rgba(255,255,255,.22);
      color:#fff;
      backdrop-filter:blur(10px);
      margin-bottom:12px;
    }
    .reel-content h2{
      font-size:28px;
      line-height:1.18;
      letter-spacing:-.03em;
      font-weight:900;
      margin:0 0 10px;
    }
    .reel-content p{
      margin:0;
      color:#dbeafe;
      font-size:14px;
    }
    .float-chip{
      position:absolute;
      background:#fff;
      border:1px solid var(--line);
      border-radius:18px;
      box-shadow:var(--shadow-sm);
      padding:12px 14px;
      color:#334155;
      font-weight:800;
      z-index:2;
    }
    .float-chip small{
      display:block;
      color:var(--muted);
      font-size:12px;
      font-weight:700;
      margin-top:2px;
    }
    .chip-a{left:4px;top:92px;transform:rotate(-4deg)}
    .chip-b{right:0;bottom:92px;transform:rotate(4deg)}
    .progress-panel{
      position:absolute;
      right:18px;top:26px;
      width:158px;
      padding:14px;
      border-radius:20px;
      background:rgba(255,255,255,.94);
      border:1px solid rgba(226,232,240,.92);
      box-shadow:var(--shadow-sm);
    }
    .progress-panel .small-label{color:var(--muted);font-size:12px;font-weight:800}
    .progress-panel .percent{font-size:30px;font-weight:900;letter-spacing:-.04em;color:var(--primary-700)}
    .progress{
      height:9px;
      border-radius:999px;
      background:#dbeafe;
      overflow:hidden;
    }
    .progress-bar{background:linear-gradient(90deg,var(--primary),var(--secondary))}

    .feature-card{
      height:100%;
      padding:28px;
      border-radius:var(--radius);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    }
    .feature-card:hover{
      transform:translateY(-6px);
      box-shadow:var(--shadow);
      border-color:rgba(37,99,235,.24);
    }
    .feature-icon{
      width:52px;height:52px;border-radius:17px;
      display:grid;place-items:center;
      color:#fff;
      background:linear-gradient(145deg,var(--primary),var(--secondary));
      font-weight:900;
      margin-bottom:18px;
      box-shadow:0 12px 28px rgba(37,99,235,.22);
    }
    .feature-card h3{
      font-size:22px;
      font-weight:850;
      letter-spacing:-.03em;
      margin:0 0 10px;
    }
    .feature-card p{color:var(--muted);margin:0}

    .demo-wrap{
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .demo-sidebar{
      height:100%;
      padding:34px;
      background:
        radial-gradient(circle at top right,rgba(37,99,235,.18),transparent 18rem),
        linear-gradient(180deg,#0f172a,#1e3a8a);
      color:#fff;
    }
    .demo-sidebar p{color:#dbeafe;margin:0 0 24px}
    .demo-step{
      display:flex;
      gap:13px;
      padding:15px 0;
      border-top:1px solid rgba(255,255,255,.13);
    }
    .demo-step:first-of-type{border-top:0}
    .demo-step b{
      width:30px;height:30px;border-radius:50%;
      display:grid;place-items:center;
      background:rgba(255,255,255,.15);
      border:1px solid rgba(255,255,255,.22);
      flex:0 0 auto;
    }
    .demo-step span{font-weight:800}
    .demo-step small{display:block;color:#bfdbfe;margin-top:2px}
    .demo-main{padding:34px}
    .screen-card{
      border:1px solid var(--line);
      background:#f8fafc;
      border-radius:24px;
      padding:18px;
      min-height:360px;
    }
    .screen-top{
      display:flex;
      justify-content:space-between;
      align-items:center;
      margin-bottom:16px;
      gap:12px;
    }
    .screen-dots{display:flex;gap:6px}
    .screen-dots i{
      width:10px;height:10px;border-radius:50%;background:#cbd5e1;display:block;
    }
    .screen-list{display:grid;gap:12px}
    .screen-item{
      display:grid;
      grid-template-columns:58px 1fr auto;
      gap:14px;
      align-items:center;
      padding:14px;
      border-radius:18px;
      background:#fff;
      border:1px solid var(--line);
      transition:transform .18s ease, border-color .18s ease, box-shadow .18s ease;
    }
    .screen-item:hover{
      transform:translateX(4px);
      border-color:rgba(37,99,235,.28);
      box-shadow:0 10px 24px rgba(15,23,42,.07);
    }
    .mini-cover{
      width:58px;height:74px;border-radius:14px;
      background:
        linear-gradient(160deg,rgba(255,255,255,.35),transparent),
        linear-gradient(145deg,#93c5fd,#2563eb);
    }
    .screen-item:nth-child(2) .mini-cover{background:linear-gradient(145deg,#bae6fd,#0284c7)}
    .screen-item:nth-child(3) .mini-cover{background:linear-gradient(145deg,#bfdbfe,#1e40af)}
    .screen-item h4{font-size:16px;font-weight:850;margin:0 0 4px}
    .screen-item p{font-size:13px;color:var(--muted);margin:0}
    .screen-item em{
      font-style:normal;
      font-size:12px;
      color:var(--primary-700);
      font-weight:900;
      background:var(--primary-50);
      padding:6px 9px;
      border-radius:999px;
    }

    .zone-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:22px;
    }
    .zone-large,.zone-small{
      border-radius:var(--radius);
      border:1px solid var(--line);
      background:#fff;
      box-shadow:var(--shadow-sm);
      overflow:hidden;
    }
    .zone-large{
      min-height:380px;
      padding:30px;
      position:relative;
      background:
        radial-gradient(circle at 90% 10%,rgba(37,99,235,.16),transparent 16rem),
        #fff;
    }
    .zone-large::after{
      content:"";
      position:absolute;
      right:28px;bottom:28px;
      width:170px;height:210px;border-radius:30px;
      background:linear-gradient(180deg,#dbeafe,#93c5fd);
      opacity:.85;
      box-shadow:0 20px 44px rgba(37,99,235,.18);
    }
    .zone-large h3,.zone-small h3{font-size:24px;font-weight:900;letter-spacing:-.03em;margin:0 0 10px}
    .zone-large p,.zone-small p{color:var(--muted);margin:0;max-width:520px}
    .zone-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:24px;
      position:relative;
      z-index:1;
    }
    .zone-side{display:grid;gap:22px}
    .zone-small{
      padding:24px;
      transition:transform .18s ease, box-shadow .18s ease;
    }
    .zone-small:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .zone-small .arrow{
      width:38px;height:38px;border-radius:14px;
      display:grid;place-items:center;
      background:var(--primary-50);
      color:var(--primary-700);
      font-weight:900;
      margin-top:18px;
    }

    .proof-band{
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      padding:28px;
    }
    .rating-summary{
      padding:26px;
      border-radius:24px;
      background:linear-gradient(145deg,var(--primary),var(--secondary));
      color:#fff;
      height:100%;
    }
    .rating-summary .score{
      font-size:58px;
      line-height:1;
      font-weight:900;
      letter-spacing:-.06em;
      margin-bottom:10px;
    }
    .rating-summary p{color:#e0f2fe;margin:0}
    .wall-list{display:grid;gap:14px}
    .wall-item{
      display:flex;
      gap:14px;
      align-items:flex-start;
      padding:16px;
      border:1px solid var(--line);
      border-radius:18px;
      background:#f8fafc;
    }
    .avatar{
      width:42px;height:42px;border-radius:50%;
      background:linear-gradient(145deg,#dbeafe,#60a5fa);
      flex:0 0 auto;
      display:grid;place-items:center;
      color:#1e3a8a;
      font-weight:900;
    }
    .wall-item strong{display:block;margin-bottom:2px}
    .wall-item p{margin:0;color:var(--muted);font-size:14px}

    .tier-card{
      height:100%;
      padding:24px;
      border-radius:var(--radius);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      position:relative;
      overflow:hidden;
      transition:transform .18s ease, box-shadow .18s ease;
    }
    .tier-card.featured{
      border-color:rgba(37,99,235,.35);
      box-shadow:var(--shadow-blue);
    }
    .tier-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .tier-card h3{font-size:22px;font-weight:900;margin:0 0 8px}
    .tier-price{font-size:34px;font-weight:900;color:var(--primary-700);letter-spacing:-.04em;margin:10px 0}
    .tier-card ul{
      list-style:none;
      padding:0;
      margin:18px 0 0;
      display:grid;
      gap:10px;
    }
    .tier-card li{
      display:flex;
      gap:8px;
      color:#475569;
      font-size:14px;
    }
    .tier-card li::before{
      content:"✓";
      color:var(--success);
      font-weight:900;
    }

    .update-timeline{
      position:relative;
      display:grid;
      gap:16px;
    }
    .update-item{
      display:grid;
      grid-template-columns:140px 1fr;
      gap:22px;
      align-items:start;
      padding:22px;
      border-radius:var(--radius);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .update-date{
      display:inline-flex;
      width:max-content;
      padding:8px 12px;
      border-radius:999px;
      color:var(--primary-700);
      background:var(--primary-50);
      border:1px solid rgba(37,99,235,.14);
      font-weight:850;
      font-size:13px;
    }
    .update-item h3{font-size:19px;font-weight:900;margin:0 0 6px}
    .update-item p{margin:0;color:var(--muted)}

    .news-layout{
      display:grid;
      grid-template-columns:1.35fr .65fr;
      gap:24px;
      align-items:start;
    }
    .news-list{
      border-radius:var(--radius);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      overflow:hidden;
    }
    .news-row{
      display:grid;
      grid-template-columns:120px 1fr auto;
      gap:18px;
      align-items:center;
      padding:20px 22px;
      border-bottom:1px solid var(--line);
    }
    .news-row:last-child{border-bottom:0}
    .news-row time{
      color:var(--muted);
      font-size:13px;
      font-weight:800;
    }
    .news-row h3{
      font-size:18px;
      font-weight:900;
      margin:0 0 5px;
      letter-spacing:-.02em;
    }
    .news-row p{margin:0;color:var(--muted);font-size:14px}
    .news-row .go{
      width:38px;height:38px;border-radius:14px;
      display:grid;place-items:center;
      background:#f1f5f9;
      color:#334155;
      font-weight:900;
      transition:background .18s ease,color .18s ease,transform .18s ease;
    }
    .news-row:hover .go{
      background:var(--primary);
      color:#fff;
      transform:translateX(3px);
    }
    .recommend-box{
      position:sticky;
      top:106px;
      padding:24px;
      border-radius:var(--radius);
      background:#0f172a;
      color:#fff;
      box-shadow:var(--shadow);
    }
    .recommend-box p{color:#cbd5e1}
    .recommend-list{
      list-style:none;
      margin:20px 0 0;
      padding:0;
      display:grid;
      gap:12px;
    }
    .recommend-list a{
      display:flex;
      justify-content:space-between;
      gap:12px;
      padding:12px;
      border-radius:14px;
      background:rgba(255,255,255,.07);
      color:#e2e8f0;
      font-weight:800;
    }
    .recommend-list a:hover{background:rgba(255,255,255,.12);color:#fff}

    .faq-wrap{
      display:grid;
      grid-template-columns:.85fr 1.15fr;
      gap:28px;
      align-items:start;
    }
    .accordion-custom .accordion-item{
      border:1px solid var(--line);
      border-radius:18px!important;
      overflow:hidden;
      margin-bottom:12px;
      background:#fff;
      box-shadow:0 10px 24px rgba(15,23,42,.05);
    }
    .accordion-custom .accordion-button{
      border:0;
      box-shadow:none;
      font-weight:900;
      color:var(--ink);
      padding:18px 20px;
      background:#fff;
    }
    .accordion-custom .accordion-button:not(.collapsed){
      color:var(--primary-700);
      background:var(--primary-50);
    }
    .accordion-custom .accordion-button:focus{
      box-shadow:0 0 0 4px rgba(37,99,235,.10);
      z-index:2;
    }
    .accordion-custom .accordion-body{
      color:var(--muted);
      padding:18px 20px 22px;
    }

    .contact-panel{
      border-radius:var(--radius-lg);
      background:
        radial-gradient(circle at 0% 0%,rgba(14,165,233,.22),transparent 18rem),
        linear-gradient(135deg,#ffffff,#eff6ff);
      border:1px solid rgba(37,99,235,.18);
      box-shadow:var(--shadow-blue);
      overflow:hidden;
    }
    .contact-copy{padding:42px}
    .contact-copy .check-list{
      list-style:none;
      padding:0;
      margin:24px 0 0;
      display:grid;
      gap:12px;
    }
    .contact-copy li{
      display:flex;
      gap:10px;
      color:#475569;
    }
    .contact-copy li::before{
      content:"●";
      color:var(--primary);
      font-size:14px;
      margin-top:2px;
    }
    .lead-form{
      padding:28px;
      margin:20px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .form-label{
      font-weight:850;
      color:#334155;
      font-size:14px;
    }
    .form-control,.form-select{
      border-radius:14px;
      border-color:var(--line-strong);
      padding:12px 14px;
      color:var(--ink);
      box-shadow:none!important;
    }
    .form-control:focus,.form-select:focus{
      border-color:rgba(37,99,235,.55);
      box-shadow:0 0 0 4px rgba(37,99,235,.10)!important;
    }
    .form-check-input{
      border-color:var(--line-strong);
      box-shadow:none!important;
    }
    .form-check-input:checked{background-color:var(--primary);border-color:var(--primary)}
    .form-tip{
      display:none;
      padding:12px 14px;
      border-radius:14px;
      background:#ecfdf5;
      color:#047857;
      font-weight:800;
      margin-top:14px;
    }

    .floating-cta{
      position:fixed;
      left:50%;
      bottom:18px;
      transform:translateX(-50%);
      z-index:999;
      display:flex;
      align-items:center;
      gap:12px;
      padding:10px 12px 10px 18px;
      border-radius:999px;
      background:rgba(15,23,42,.92);
      color:#fff;
      box-shadow:0 18px 46px rgba(15,23,42,.28);
      backdrop-filter:blur(12px);
      border:1px solid rgba(255,255,255,.12);
    }
    .floating-cta span{font-size:14px;font-weight:800;color:#dbeafe;white-space:nowrap}
    .floating-cta .btn{padding:8px 14px;font-size:14px}

    .site-footer{
      padding:56px 0 34px;
      background:#0f172a;
      color:#cbd5e1;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:28px;
      margin-bottom:34px;
    }
    .footer-brand{
      display:flex;
      gap:12px;
      align-items:center;
      color:#fff;
      font-weight:900;
      margin-bottom:14px;
    }
    .footer-brand .brand-mark{box-shadow:none}
    .site-footer p{color:#94a3b8;margin:0;max-width:560px}
    .footer-title{
      color:#fff;
      font-weight:900;
      margin-bottom:14px;
    }
    .footer-links{
      list-style:none;
      margin:0;
      padding:0;
      display:grid;
      gap:10px;
    }
    .footer-links a{color:#cbd5e1}
    .footer-links a:hover{color:#fff}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:18px;
      padding-top:22px;
      border-top:1px solid rgba(255,255,255,.10);
      color:#94a3b8;
      font-size:14px;
    }

    @media (max-width: 1024px){
      .section{padding:70px 0}
      .hero-grid{grid-template-columns:1fr;gap:18px}
      .hero-content{text-align:left;padding:16px 0 0}
      .vertical-stage{min-height:510px}
      .nav-search{width:190px}
      .zone-grid,.news-layout,.faq-wrap{grid-template-columns:1fr}
      .recommend-box{position:relative;top:auto}
    }
    @media (max-width: 991.98px){
      .navbar-collapse{
        margin-top:14px;
        padding:16px;
        border:1px solid var(--line);
        border-radius:20px;
        background:#fff;
        box-shadow:var(--shadow-sm);
      }
      .nav-main{align-items:stretch}
      .nav-search{width:100%;margin:8px 0}
      .header-cta{margin-left:0;width:100%}
      .header-cta .btn{width:100%}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 768px){
      .container-custom{padding:0 18px}
      .hero{padding:46px 0 52px}
      .hero::before{inset:10px 8px auto;height:620px;border-radius:28px}
      .hero-notes{grid-template-columns:1fr}
      .vertical-stage{padding:10px;min-height:470px}
      .reel-frame{height:455px;border-radius:32px}
      .float-chip,.progress-panel{display:none}
      .demo-sidebar,.demo-main,.contact-copy{padding:26px}
      .screen-item{grid-template-columns:48px 1fr}
      .screen-item em{grid-column:2}
      .mini-cover{width:48px;height:62px}
      .zone-large::after{display:none}
      .news-row{grid-template-columns:1fr;gap:8px}
      .news-row .go{display:none}
      .update-item{grid-template-columns:1fr;gap:12px}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{flex-direction:column}
      .floating-cta{left:12px;right:12px;transform:none;justify-content:space-between;border-radius:20px}
    }
    @media (max-width: 520px){
      .topbar-inner{flex-direction:column;align-items:flex-start;padding:8px 0;gap:6px}
      .topbar-actions{width:100%;justify-content:space-between}
      .brand-text{max-width:230px}
      .brand-text span:first-child{font-size:15px}
      .section{padding:56px 0}
      .section-title{font-size:30px}
      .hero h1{font-size:38px}
      .hero-lead{font-size:16px}
      .hero-actions .btn{width:100%}
      .proof-band{padding:18px}
      .lead-form{margin:12px;padding:20px}
      .floating-cta span{display:none}
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}