/* roulang page: index */
:root{
      --brand:#1456d9;
      --brand-dark:#0d2f63;
      --brand-soft:#eaf2ff;
      --accent:#f3b33d;
      --accent-dark:#d98a00;
      --ink:#14233b;
      --muted:#607089;
      --weak:#8a97aa;
      --line:#dce6f3;
      --bg:#f6f9fd;
      --white:#ffffff;
      --success:#16a36b;
      --danger:#e05454;
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:30px;
      --shadow-sm:0 10px 25px rgba(20, 47, 92, .08);
      --shadow:0 22px 55px rgba(20, 47, 92, .12);
      --shadow-lg:0 34px 80px rgba(13, 47, 99, .18);
      --nav-h:76px;
      --section:92px;
      --ease:all .25s ease;
    }

    *{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 16% 0%, rgba(20,86,217,.10), transparent 34%),
        radial-gradient(circle at 88% 12%, rgba(243,179,61,.14), transparent 28%),
        var(--bg);
      line-height:1.7;
      padding-bottom:76px;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--brand)}
    img,svg{max-width:100%;display:block}
    button,input{font:inherit}
    ::selection{background:rgba(20,86,217,.18)}
    .container{max-width:1180px}
    .section{padding:var(--section) 0}
    .section-tight{padding:64px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:var(--brand-dark);
      background:rgba(20,86,217,.08);
      border:1px solid rgba(20,86,217,.13);
      font-weight:700;
      font-size:13px;
      letter-spacing:.02em;
    }
    .eyebrow .dot{
      width:8px;height:8px;border-radius:50%;
      background:var(--success);
      box-shadow:0 0 0 5px rgba(22,163,107,.12);
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      gap:28px;
      align-items:flex-end;
      margin-bottom:34px;
    }
    .section-title{
      margin:12px 0 0;
      font-size:clamp(28px,3.2vw,42px);
      line-height:1.18;
      font-weight:900;
      letter-spacing:-.02em;
      color:var(--ink);
    }
    .section-desc{
      max-width:590px;
      margin:12px 0 0;
      color:var(--muted);
      font-size:16px;
    }
    .text-soft{color:var(--muted)}
    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:6px 10px;
      border-radius:999px;
      background:#eef5ff;
      border:1px solid #d7e7ff;
      color:#174b9f;
      font-size:13px;
      font-weight:700;
      white-space:nowrap;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1030;
      background:linear-gradient(180deg,#0b2348 0%,#0d2f63 100%);
      border-bottom:1px solid rgba(255,255,255,.10);
      box-shadow:0 12px 32px rgba(6,22,48,.18);
    }
    .navbar{min-height:var(--nav-h);padding:12px 0}
    .navbar-brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      color:#fff!important;
      font-weight:900;
      letter-spacing:.01em;
      font-size:22px;
    }
    .brand-mark{
      width:40px;height:40px;border-radius:14px;
      display:grid;place-items:center;
      color:#0d2f63;
      background:linear-gradient(135deg,#fff 0%,#dceaff 48%,#f3b33d 100%);
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.55),0 10px 24px rgba(0,0,0,.22);
      font-weight:950;
    }
    .navbar-toggler{
      border:1px solid rgba(255,255,255,.22);
      border-radius:12px;
      padding:8px 10px;
      color:#fff;
    }
    .navbar-toggler:focus{box-shadow:0 0 0 4px rgba(243,179,61,.20)}
    .navbar-toggler-icon{
      filter:invert(1) grayscale(1) brightness(2);
    }
    .navbar-nav .nav-link{
      color:rgba(255,255,255,.78);
      font-weight:700;
      padding:10px 14px!important;
      border-radius:12px;
    }
    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link.active{
      color:#fff;
      background:rgba(255,255,255,.10);
    }
    .nav-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:42px;
      padding:10px 18px;
      border-radius:999px;
      background:linear-gradient(135deg,var(--accent),#ffe29a);
      color:#12315d!important;
      font-weight:900;
      box-shadow:0 12px 26px rgba(243,179,61,.22);
      border:1px solid rgba(255,255,255,.35);
    }
    .nav-cta:hover{transform:translateY(-1px);box-shadow:0 16px 32px rgba(243,179,61,.32);color:#08234a!important}
    .nav-search{
      position:relative;
      min-width:230px;
    }
    .nav-search input{
      width:100%;
      border:1px solid rgba(255,255,255,.16);
      background:rgba(255,255,255,.08);
      color:#fff;
      border-radius:999px;
      padding:10px 38px 10px 14px;
      outline:none;
      transition:var(--ease);
    }
    .nav-search input::placeholder{color:rgba(255,255,255,.55)}
    .nav-search input:focus{
      border-color:rgba(243,179,61,.75);
      background:rgba(255,255,255,.12);
      box-shadow:0 0 0 4px rgba(243,179,61,.16);
    }
    .nav-search span{
      position:absolute;
      right:13px;
      top:50%;
      transform:translateY(-50%);
      color:rgba(255,255,255,.68);
    }

    .btn-brand,.btn-ghost,.btn-light-brand,.btn-warning-brand{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:48px;
      padding:12px 20px;
      border-radius:999px;
      border:0;
      font-weight:900;
      transition:var(--ease);
      white-space:nowrap;
    }
    .btn-brand{
      background:linear-gradient(135deg,var(--brand),#2f77ff);
      color:#fff;
      box-shadow:0 14px 32px rgba(20,86,217,.26);
    }
    .btn-brand:hover{color:#fff;transform:translateY(-2px);box-shadow:0 20px 44px rgba(20,86,217,.34)}
    .btn-ghost{
      color:var(--brand-dark);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .btn-ghost:hover{transform:translateY(-2px);border-color:#bad1f5;box-shadow:var(--shadow);color:var(--brand)}
    .btn-light-brand{
      background:rgba(255,255,255,.18);
      color:#fff;
      border:1px solid rgba(255,255,255,.22);
    }
    .btn-light-brand:hover{background:#fff;color:var(--brand-dark);transform:translateY(-2px)}
    .btn-warning-brand{
      background:linear-gradient(135deg,var(--accent),#ffd983);
      color:#12315d;
      box-shadow:0 14px 32px rgba(243,179,61,.25);
    }
    .btn-warning-brand:hover{transform:translateY(-2px);color:#08234a;box-shadow:0 20px 44px rgba(243,179,61,.34)}
    .btn-brand:focus-visible,.btn-ghost:focus-visible,.btn-warning-brand:focus-visible,.btn-light-brand:focus-visible{
      outline:0;
      box-shadow:0 0 0 5px rgba(20,86,217,.18),0 18px 34px rgba(20,86,217,.20);
    }

    .hero{
      position:relative;
      overflow:hidden;
      padding:70px 0 58px;
      background:
        linear-gradient(180deg,rgba(255,255,255,.70),rgba(246,249,253,.92));
    }
    .hero:before{
      content:"";
      position:absolute;
      inset:26px 5% auto;
      height:340px;
      background:linear-gradient(135deg,rgba(20,86,217,.10),rgba(243,179,61,.12));
      border-radius:48px;
      filter:blur(.1px);
      z-index:0;
    }
    .hero .container{position:relative;z-index:1}
    .hero-grid{
      display:grid;
      grid-template-columns:1fr minmax(360px,520px) 1fr;
      gap:22px;
      align-items:center;
    }
    .hero-title{
      font-size:clamp(34px,4.8vw,64px);
      line-height:1.08;
      font-weight:950;
      letter-spacing:-.04em;
      margin:16px 0 18px;
      color:#10213a;
    }
    .hero-copy{
      color:#53657e;
      font-size:17px;
      margin:0 0 24px;
    }
    .value-stack{
      display:grid;
      gap:16px;
    }
    .value-card{
      background:rgba(255,255,255,.86);
      backdrop-filter:blur(14px);
      border:1px solid rgba(220,230,243,.78);
      border-radius:var(--radius);
      padding:18px;
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
    }
    .value-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .value-card strong{
      display:block;
      font-size:17px;
      margin-bottom:5px;
      color:#112849;
    }
    .value-card p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .stage-wrap{
      position:relative;
      padding:16px;
      border-radius:36px;
      background:linear-gradient(145deg,rgba(255,255,255,.92),rgba(234,242,255,.90));
      border:1px solid rgba(255,255,255,.88);
      box-shadow:var(--shadow-lg);
    }
    .product-stage{
      min-height:470px;
      border-radius:28px;
      overflow:hidden;
      background:
        linear-gradient(180deg,#0e315f 0%,#143d77 48%,#f8fbff 48%,#f8fbff 100%);
      position:relative;
      border:1px solid rgba(13,47,99,.08);
    }
    .stage-top{
      padding:22px;
      color:#fff;
    }
    .stage-toolbar{
      display:flex;
      justify-content:space-between;
      align-items:center;
      margin-bottom:22px;
    }
    .stage-dots{display:flex;gap:7px}
    .stage-dots i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.55)}
    .stage-badge{
      padding:6px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.14);
      border:1px solid rgba(255,255,255,.20);
      font-size:12px;
      font-weight:800;
    }
    .stage-title{
      font-size:24px;
      font-weight:950;
      margin-bottom:8px;
    }
    .stage-sub{color:rgba(255,255,255,.75);font-size:14px}
    .stage-panel{
      position:absolute;
      left:22px;right:22px;top:178px;
      background:#fff;
      border-radius:24px;
      padding:18px;
      box-shadow:0 22px 55px rgba(4,22,51,.18);
      border:1px solid rgba(220,230,243,.88);
    }
    .cover-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:12px;
      margin-bottom:14px;
    }
    .cover-main,.cover-side{
      border-radius:18px;
      overflow:hidden;
      position:relative;
      min-height:138px;
      background:linear-gradient(135deg,#dceaff,#9fc2ff);
    }
    .cover-side{
      min-height:138px;
      background:linear-gradient(135deg,#fff0c8,#87b5ff);
    }
    .play-pill{
      position:absolute;
      left:14px;bottom:14px;
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 11px;
      border-radius:999px;
      background:rgba(255,255,255,.90);
      color:#12315d;
      font-weight:900;
      font-size:13px;
      box-shadow:0 10px 20px rgba(0,0,0,.12);
    }
    .mini-row{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:10px;
    }
    .mini-card{
      padding:12px;
      border-radius:16px;
      background:#f3f7fe;
      border:1px solid #e2ecfb;
    }
    .mini-card b{display:block;font-size:18px;color:#143d77}
    .mini-card span{font-size:12px;color:var(--muted)}
    .stage-bottom-note{
      position:absolute;
      left:26px;right:26px;bottom:20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:13px 14px;
      border-radius:18px;
      background:#ffffff;
      box-shadow:var(--shadow-sm);
      color:var(--muted);
      font-size:13px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin:18px 0 18px;
    }
    .hero-data{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:10px;
      margin-top:18px;
    }
    .data-pill{
      padding:13px 12px;
      border-radius:18px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .data-pill b{display:block;color:var(--brand-dark);font-size:21px;line-height:1.1}
    .data-pill span{font-size:12px;color:var(--muted)}

    .entry-section{
      padding-top:74px;
    }
    .deal-strip{
      border-radius:28px;
      padding:18px;
      background:linear-gradient(135deg,#0e315f,#1456d9);
      color:#fff;
      box-shadow:var(--shadow);
      margin-bottom:28px;
      overflow:hidden;
      position:relative;
    }
    .deal-strip:after{
      content:"";
      position:absolute;
      right:-80px;top:-90px;
      width:240px;height:240px;border-radius:50%;
      background:rgba(243,179,61,.22);
    }
    .deal-content{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1.2fr auto 1fr;
      gap:18px;
      align-items:center;
    }
    .countdown{
      display:flex;
      gap:9px;
      justify-content:center;
    }
    .time-box{
      min-width:58px;
      padding:8px 10px;
      border-radius:14px;
      background:rgba(255,255,255,.14);
      border:1px solid rgba(255,255,255,.20);
      text-align:center;
    }
    .time-box b{display:block;font-size:20px;line-height:1.1}
    .time-box span{font-size:12px;color:rgba(255,255,255,.72)}
    .stock-line{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:flex-end;
      align-items:center;
      color:rgba(255,255,255,.82);
      font-size:14px;
    }
    .stock-bar{
      width:150px;height:8px;border-radius:999px;background:rgba(255,255,255,.18);overflow:hidden;
    }
    .stock-bar i{display:block;width:38%;height:100%;background:linear-gradient(90deg,var(--accent),#fff0b8);border-radius:999px}
    .entry-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr .9fr;
      gap:18px;
    }
    .entry-card{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      padding:24px;
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
      min-height:210px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .entry-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#c7dbfa}
    .entry-card.featured{
      background:linear-gradient(180deg,#ffffff,#eef5ff);
      border-color:#c4d9fb;
    }
    .entry-card h3{font-size:22px;font-weight:950;margin:14px 0 8px}
    .entry-card p{color:var(--muted);margin:0 0 18px}
    .entry-icon{
      width:48px;height:48px;border-radius:18px;
      display:grid;place-items:center;
      background:var(--brand-soft);
      color:var(--brand);
      font-size:23px;
      font-weight:900;
    }
    .goods-rail{
      display:flex;
      gap:14px;
      overflow-x:auto;
      padding:4px 2px 14px;
      scrollbar-width:thin;
    }
    .goods-card{
      flex:0 0 252px;
      border-radius:22px;
      background:#fff;
      border:1px solid var(--line);
      padding:18px;
      box-shadow:var(--shadow-sm);
    }
    .goods-card h4{font-size:18px;font-weight:950;margin:12px 0 6px}
    .goods-card p{font-size:14px;color:var(--muted);margin:0 0 14px}
    .goods-meta{
      display:flex;
      justify-content:space-between;
      gap:10px;
      align-items:center;
      padding-top:12px;
      border-top:1px dashed #d8e5f5;
    }
    .goods-meta b{color:var(--danger)}
    .goods-card .btn{width:100%;margin-top:14px;border-radius:999px;font-weight:900}

    .milestone-wrap{
      display:grid;
      grid-template-columns:.92fr 1.08fr;
      gap:24px;
      align-items:stretch;
    }
    .timeline{
      position:relative;
      display:grid;
      gap:16px;
    }
    .timeline-item{
      position:relative;
      padding:20px 20px 20px 58px;
      border-radius:var(--radius);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .timeline-item:before{
      content:attr(data-step);
      position:absolute;
      left:18px;top:20px;
      width:28px;height:28px;border-radius:50%;
      display:grid;place-items:center;
      background:var(--brand);
      color:#fff;
      font-weight:950;
      font-size:13px;
      box-shadow:0 8px 18px rgba(20,86,217,.22);
    }
    .timeline-item h3{font-size:18px;font-weight:950;margin:0 0 5px}
    .timeline-item p{margin:0;color:var(--muted);font-size:14px}
    .demo-board{
      background:#fff;
      border:1px solid var(--line);
      border-radius:32px;
      padding:24px;
      box-shadow:var(--shadow);
      min-height:100%;
    }
    .demo-tabs{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      margin-bottom:18px;
    }
    .demo-tab{
      border:1px solid #d5e4f7;
      background:#f4f8ff;
      color:#174b9f;
      border-radius:999px;
      padding:9px 13px;
      font-weight:900;
      font-size:14px;
    }
    .demo-tab.active{background:var(--brand);border-color:var(--brand);color:#fff}
    .demo-cards{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:14px;
    }
    .demo-card{
      border-radius:22px;
      padding:18px;
      background:linear-gradient(180deg,#f9fbff,#eff5ff);
      border:1px solid #dfeafb;
    }
    .demo-card b{font-size:17px;color:#112849}
    .demo-card p{margin:8px 0 0;color:var(--muted);font-size:14px}

    .news-layout{
      display:grid;
      grid-template-columns:1.35fr .65fr;
      gap:24px;
      align-items:start;
    }
    .news-list,.recommend-box{
      background:#fff;
      border:1px solid var(--line);
      border-radius:28px;
      box-shadow:var(--shadow-sm);
      padding:12px;
    }
    .news-item{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:16px;
      align-items:center;
      padding:18px;
      border-radius:20px;
      transition:var(--ease);
    }
    .news-item + .news-item{border-top:1px solid #edf2f8}
    .news-item:hover{background:#f5f9ff;transform:translateX(4px)}
    .news-date{
      width:64px;
      text-align:center;
      border-radius:16px;
      padding:8px 6px;
      background:#eef5ff;
      color:var(--brand-dark);
      font-weight:950;
    }
    .news-date span{display:block;font-size:12px;color:var(--muted);font-weight:800}
    .news-item h3{font-size:17px;font-weight:950;margin:0 0 4px}
    .news-item p{margin:0;color:var(--muted);font-size:14px}
    .arrow{color:var(--weak);font-weight:950}
    .recommend-box{padding:22px}
    .recommend-box h3{font-size:20px;font-weight:950;margin:0 0 16px}
    .rank-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}
    .rank-list li{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:12px;
      border-radius:16px;
      background:#f7faff;
      border:1px solid #e5eefb;
    }
    .rank-no{
      width:26px;height:26px;border-radius:9px;
      display:grid;place-items:center;
      background:#fff;
      color:var(--brand);
      font-weight:950;
      box-shadow:0 6px 14px rgba(20,86,217,.10);
      flex:0 0 auto;
    }
    .rank-list a{font-weight:900;color:#132947}
    .rank-list small{display:block;color:var(--muted);margin-top:3px}

    .assurance-band{
      background:linear-gradient(180deg,#ffffff,#f0f6ff);
      border-top:1px solid #dfe9f7;
      border-bottom:1px solid #dfe9f7;
    }
    .assurance-icons{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
      margin-bottom:22px;
    }
    .assurance-item{
      background:#fff;
      border:1px solid var(--line);
      border-radius:24px;
      padding:20px;
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
    }
    .assurance-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .assurance-item .ico{
      width:48px;height:48px;border-radius:18px;
      display:grid;place-items:center;
      background:#eef5ff;
      color:var(--brand);
      font-size:24px;
      margin-bottom:12px;
    }
    .assurance-item h3{font-size:18px;font-weight:950;margin:0 0 6px}
    .assurance-item p{margin:0;color:var(--muted);font-size:14px}
    .proof-card{
      border-radius:30px;
      background:#0d2f63;
      color:#fff;
      padding:30px;
      display:grid;
      grid-template-columns:1fr 1.2fr;
      gap:24px;
      align-items:center;
      box-shadow:var(--shadow-lg);
    }
    .proof-card p{color:rgba(255,255,255,.72);margin:10px 0 0}
    .proof-metrics{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
    }
    .proof-metric{
      padding:18px;
      border-radius:20px;
      background:rgba(255,255,255,.10);
      border:1px solid rgba(255,255,255,.13);
    }
    .proof-metric b{display:block;font-size:28px;color:#fff}
    .proof-metric span{color:rgba(255,255,255,.70);font-size:13px}
    .logo-wall{
      display:grid;
      grid-template-columns:repeat(5,1fr);
      gap:12px;
      margin-top:22px;
    }
    .logo-chip{
      border-radius:18px;
      background:#fff;
      border:1px solid var(--line);
      padding:14px 12px;
      text-align:center;
      font-weight:950;
      color:#40516b;
      box-shadow:var(--shadow-sm);
    }

    .app-panel{
      position:relative;
      overflow:hidden;
      border-radius:36px;
      background:linear-gradient(135deg,#102b55,#1456d9);
      color:#fff;
      padding:38px;
      box-shadow:var(--shadow-lg);
    }
    .app-panel:before{
      content:"";
      position:absolute;
      right:-80px;bottom:-110px;
      width:360px;height:360px;border-radius:50%;
      background:rgba(243,179,61,.22);
    }
    .app-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1fr .9fr;
      gap:30px;
      align-items:center;
    }
    .app-panel h2{
      font-size:clamp(28px,3.2vw,44px);
      line-height:1.18;
      font-weight:950;
      letter-spacing:-.02em;
      margin:12px 0 14px;
    }
    .app-panel p{color:rgba(255,255,255,.76);margin:0 0 22px}
    .app-actions{display:flex;flex-wrap:wrap;gap:12px}
    .qr-card{
      background:#fff;
      color:var(--ink);
      border-radius:28px;
      padding:22px;
      box-shadow:0 26px 60px rgba(0,0,0,.18);
    }
    .qr-grid{
      display:grid;
      grid-template-columns:112px 1fr;
      gap:16px;
      align-items:center;
    }
    .fake-qr{
      width:112px;height:112px;border-radius:18px;
      background:
        linear-gradient(90deg,#102b55 10px,transparent 10px) 0 0/22px 22px,
        linear-gradient(#102b55 10px,transparent 10px) 0 0/22px 22px,
        #eef5ff;
      border:10px solid #fff;
      outline:1px solid #d7e7ff;
    }
    .qr-card h3{font-size:20px;font-weight:950;margin:0 0 7px}
    .qr-card p{color:var(--muted);margin:0;font-size:14px}
    .reward-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:14px;
      margin-top:18px;
    }
    .reward{
      padding:16px;
      border-radius:20px;
      background:rgba(255,255,255,.10);
      border:1px solid rgba(255,255,255,.14);
    }
    .reward b{display:block;color:#fff;margin-bottom:4px}
    .reward span{font-size:13px;color:rgba(255,255,255,.70)}

    .faq-grid{
      display:grid;
      grid-template-columns:.8fr 1.2fr;
      gap:24px;
      align-items:start;
    }
    .faq-side{
      background:#fff;
      border:1px solid var(--line);
      border-radius:28px;
      padding:26px;
      box-shadow:var(--shadow-sm);
      position:sticky;
      top:100px;
    }
    .faq-side h2{font-size:30px;font-weight:950;margin:12px 0 10px}
    .accordion{
      display:grid;
      gap:14px;
    }
    .accordion-item{
      border:1px solid var(--line)!important;
      border-radius:22px!important;
      overflow:hidden;
      box-shadow:var(--shadow-sm);
      background:#fff;
    }
    .accordion-button{
      border-radius:22px!important;
      padding:20px 22px;
      font-weight:950;
      color:#132947;
      background:#fff;
      box-shadow:none!important;
    }
    .accordion-button:not(.collapsed){
      color:var(--brand-dark);
      background:#f3f8ff;
    }
    .accordion-button:focus{box-shadow:0 0 0 4px rgba(20,86,217,.12)!important}
    .accordion-body{
      color:var(--muted);
      padding:0 22px 22px;
    }

    .site-footer{
      background:#071d3d;
      color:rgba(255,255,255,.78);
      padding:58px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:28px;
      align-items:start;
    }
    .footer-brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      color:#fff;
      font-size:22px;
      font-weight:950;
      margin-bottom:14px;
    }
    .footer-brand .brand-mark{width:38px;height:38px}
    .footer-title{
      color:#fff;
      font-weight:950;
      margin-bottom:12px;
    }
    .footer-links{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:9px;
    }
    .footer-links a{color:rgba(255,255,255,.70)}
    .footer-links a:hover{color:#fff;transform:translateX(3px)}
    .footer-bottom{
      border-top:1px solid rgba(255,255,255,.10);
      margin-top:34px;
      padding-top:22px;
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      color:rgba(255,255,255,.55);
      font-size:14px;
    }

    .sticky-cta{
      position:fixed;
      left:50%;
      transform:translateX(-50%);
      bottom:16px;
      width:min(1080px,calc(100% - 28px));
      z-index:1040;
      border-radius:24px;
      background:rgba(7,29,61,.94);
      backdrop-filter:blur(18px);
      color:#fff;
      box-shadow:0 22px 70px rgba(7,29,61,.30);
      border:1px solid rgba(255,255,255,.14);
      padding:12px 14px;
    }
    .sticky-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
    }
    .sticky-copy{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
    }
    .sticky-dot{
      width:12px;height:12px;border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 7px rgba(243,179,61,.16);
      flex:0 0 auto;
    }
    .sticky-copy strong{display:block;white-space:nowrap}
    .sticky-copy span{display:block;color:rgba(255,255,255,.65);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .sticky-actions{display:flex;gap:10px;flex:0 0 auto}

    @media (max-width: 1024px){
      :root{--section:76px}
      .hero-grid{grid-template-columns:1fr;gap:18px}
      .stage-wrap{order:2}
      .value-stack:first-child{order:1}
      .value-stack:last-child{order:3}
      .hero-data{grid-template-columns:repeat(3,1fr)}
      .entry-grid,.milestone-wrap,.news-layout,.proof-card,.app-grid,.faq-grid{grid-template-columns:1fr}
      .assurance-icons{grid-template-columns:repeat(2,1fr)}
      .logo-wall{grid-template-columns:repeat(3,1fr)}
      .deal-content{grid-template-columns:1fr;align-items:start}
      .stock-line{justify-content:flex-start}
      .faq-side{position:static}
      .footer-grid{grid-template-columns:1fr 1fr}
      .nav-search{min-width:100%;margin:10px 0}
    }

    @media (max-width: 768px){
      body{padding-bottom:92px}
      .section-head{display:block}
      .hero{padding:44px 0 40px}
      .hero:before{inset:18px 12px auto;height:420px;border-radius:28px}
      .hero-actions{display:grid;grid-template-columns:1fr}
      .btn-brand,.btn-ghost,.btn-warning-brand,.btn-light-brand{width:100%}
      .hero-data{grid-template-columns:1fr}
      .product-stage{min-height:430px}
      .stage-panel{top:162px;left:14px;right:14px}
      .cover-grid{grid-template-columns:1fr}
      .cover-side{display:none}
      .mini-row{grid-template-columns:1fr}
      .stage-bottom-note{position:static;margin:18px 14px 0}
      .countdown{justify-content:flex-start;overflow-x:auto}
      .entry-grid,.demo-cards,.assurance-icons,.proof-metrics,.reward-grid{grid-template-columns:1fr}
      .news-item{grid-template-columns:1fr auto}
      .news-date{grid-row:1 / span 2}
      .logo-wall{grid-template-columns:repeat(2,1fr)}
      .qr-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .sticky-inner{align-items:flex-start;flex-direction:column}
      .sticky-actions{width:100%;display:grid;grid-template-columns:1fr 1fr}
      .sticky-copy strong{white-space:normal}
    }

    @media (max-width: 520px){
      .navbar-brand{font-size:19px}
      .brand-mark{width:36px;height:36px;border-radius:12px}
      .section{padding:62px 0}
      .section-tight{padding:48px 0}
      .hero-title{font-size:34px}
      .value-card,.entry-card,.demo-board,.recommend-box,.faq-side,.qr-card{border-radius:22px}
      .stage-wrap{padding:10px;border-radius:26px}
      .product-stage{border-radius:20px}
      .deal-strip,.app-panel{border-radius:24px;padding:20px}
      .time-box{min-width:52px}
      .sticky-cta{bottom:10px;width:calc(100% - 18px);border-radius:18px}
    }

/* 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}