/* roulang page: index */
:root{
      --nav:#07111f;
      --nav-2:#0b1220;
      --primary:#2f6df6;
      --primary-dark:#1d55d8;
      --cyan:#22d3ee;
      --violet:#8b5cf6;
      --amber:#f59e0b;
      --bg:#f6f9ff;
      --bg-soft:#eef4ff;
      --white:#ffffff;
      --text:#142033;
      --muted:#60708a;
      --light-text:#aebbd0;
      --border:#e3ecff;
      --border-strong:rgba(47,109,246,.18);
      --shadow:0 18px 45px rgba(31,72,130,.10);
      --shadow-hover:0 24px 60px rgba(31,72,130,.16);
      --radius-xl:30px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:14px;
      --container:1160px;
      --ease:all .28s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 14% 8%, rgba(34,211,238,.14), transparent 28%),
        radial-gradient(circle at 86% 20%, rgba(139,92,246,.12), transparent 30%),
        linear-gradient(180deg,#f8fbff 0%, var(--bg) 48%, #fff 100%);
      line-height:1.72;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    img{max-width:100%;display:block}
    button,input{font-family:inherit}
    ::selection{background:rgba(47,109,246,.18);color:var(--primary-dark)}
    .container{max-width:var(--container)}
    .section{
      padding:88px 0;
      position:relative;
    }
    .section-tight{padding:68px 0}
    .section-title{
      max-width:720px;
      margin:0 auto 42px;
      text-align:center;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 13px;
      border-radius:999px;
      background:rgba(47,109,246,.09);
      color:var(--primary-dark);
      border:1px solid rgba(47,109,246,.14);
      font-weight:700;
      font-size:13px;
      letter-spacing:.02em;
    }
    .eyebrow::before{
      content:"";
      width:8px;height:8px;border-radius:50%;
      background:linear-gradient(135deg,var(--cyan),var(--violet));
      box-shadow:0 0 14px rgba(34,211,238,.7);
    }
    h1,h2,h3,h4{font-weight:850;letter-spacing:-.02em;color:#101a2b}
    h1{font-size:54px;line-height:1.14;margin:18px 0 18px}
    h2{font-size:36px;line-height:1.22;margin:14px 0 14px}
    h3{font-size:22px;line-height:1.35}
    p{color:var(--muted);margin-bottom:0}
    .lead-text{font-size:17px;color:#53647d}
    .text-gradient{
      background:linear-gradient(95deg,var(--primary),var(--cyan),var(--violet));
      -webkit-background-clip:text;
      color:transparent;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1030;
      background:linear-gradient(180deg,rgba(7,17,31,.98),rgba(11,18,32,.96));
      border-bottom:1px solid rgba(255,255,255,.08);
      box-shadow:0 12px 34px rgba(0,0,0,.18);
      backdrop-filter:blur(14px);
    }
    .navbar{padding:14px 0}
    .navbar-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff!important;
      font-weight:850;
      max-width:410px;
      line-height:1.15;
      letter-spacing:-.01em;
    }
    .brand-mark{
      width:42px;height:42px;border-radius:15px;
      display:grid;place-items:center;
      flex:0 0 auto;
      background:
        linear-gradient(145deg,rgba(34,211,238,.95),rgba(47,109,246,.95) 52%,rgba(139,92,246,.95));
      box-shadow:0 0 28px rgba(34,211,238,.38), inset 0 1px 0 rgba(255,255,255,.35);
      color:#fff;
      font-weight:900;
      font-size:15px;
    }
    .brand-text small{
      display:block;
      color:#8fa1bd;
      font-size:12px;
      font-weight:650;
      margin-top:2px;
    }
    .navbar-toggler{
      border:1px solid rgba(255,255,255,.16);
      border-radius:14px;
      padding:9px 11px;
      color:#fff;
      box-shadow:none!important;
    }
    .navbar-toggler:focus-visible{
      outline:3px solid rgba(34,211,238,.35);
      outline-offset:3px;
    }
    .navbar-toggler-icon{
      filter:invert(1) brightness(1.4);
    }
    .navbar-nav{
      gap:6px;
      align-items:center;
    }
    .nav-link{
      position:relative;
      color:#b9c6d8!important;
      font-weight:720;
      font-size:15px;
      padding:10px 14px!important;
      border-radius:999px;
    }
    .nav-link::after{
      content:"";
      position:absolute;
      left:18px;right:18px;bottom:4px;
      height:2px;border-radius:99px;
      background:linear-gradient(90deg,var(--cyan),var(--violet));
      opacity:0;
      transform:scaleX(.35);
      transition:var(--ease);
      box-shadow:0 0 16px rgba(34,211,238,.6);
    }
    .nav-link:hover{
      color:#fff!important;
      background:rgba(255,255,255,.06);
    }
    .nav-link:hover::after,
    .nav-link.active::after{
      opacity:1;
      transform:scaleX(1);
    }
    .nav-link.active{
      color:#fff!important;
      background:linear-gradient(180deg,rgba(47,109,246,.18),rgba(34,211,238,.08));
      text-shadow:0 0 18px rgba(34,211,238,.35);
    }
    .nav-cta{
      margin-left:8px;
      color:#06111d!important;
      background:linear-gradient(135deg,var(--cyan),#7dd3fc);
      border:0;
      border-radius:999px;
      padding:10px 18px;
      font-weight:850;
      box-shadow:0 0 0 1px rgba(34,211,238,.45),0 12px 24px rgba(34,211,238,.18);
      white-space:nowrap;
    }
    .nav-cta:hover{
      transform:translateY(-2px);
      box-shadow:0 0 24px rgba(34,211,238,.45),0 16px 32px rgba(34,211,238,.22);
    }

    .btn{
      border-radius:999px;
      padding:12px 22px;
      font-weight:800;
      border:1px solid transparent;
      transition:var(--ease);
    }
    .btn:focus-visible,
    .form-control:focus-visible,
    .accordion-button:focus-visible{
      outline:3px solid rgba(47,109,246,.26);
      outline-offset:3px;
      box-shadow:none;
    }
    .btn-primary{
      background:linear-gradient(135deg,var(--primary),#4f8cff);
      border-color:rgba(47,109,246,.45);
      box-shadow:0 14px 30px rgba(47,109,246,.24);
    }
    .btn-primary:hover,.btn-primary:active{
      background:linear-gradient(135deg,var(--primary-dark),var(--primary));
      transform:translateY(-2px);
      border-color:rgba(34,211,238,.5);
      box-shadow:0 18px 38px rgba(47,109,246,.28),0 0 0 4px rgba(34,211,238,.12);
    }
    .btn-outline-primary{
      color:var(--primary-dark);
      border-color:rgba(47,109,246,.24);
      background:#fff;
    }
    .btn-outline-primary:hover{
      color:var(--primary-dark);
      background:#edf4ff;
      border-color:rgba(47,109,246,.42);
      transform:translateY(-2px);
      box-shadow:0 14px 30px rgba(31,72,130,.10);
    }
    .btn-dark{
      background:#111c2e;
      border-color:#111c2e;
      box-shadow:0 12px 26px rgba(7,17,31,.18);
    }
    .btn-dark:hover{
      background:#07111f;
      border-color:rgba(34,211,238,.45);
      transform:translateY(-2px);
      box-shadow:0 16px 34px rgba(7,17,31,.24),0 0 0 4px rgba(34,211,238,.12);
    }

    .hero{
      position:relative;
      overflow:hidden;
      padding:86px 0 62px;
      background:
        linear-gradient(rgba(47,109,246,.035) 1px, transparent 1px),
        linear-gradient(90deg,rgba(47,109,246,.035) 1px, transparent 1px),
        radial-gradient(circle at 76% 20%, rgba(34,211,238,.23), transparent 28%),
        radial-gradient(circle at 20% 82%, rgba(139,92,246,.12), transparent 26%);
      background-size:34px 34px,34px 34px,auto,auto;
    }
    .hero::before{
      content:"";
      position:absolute;
      width:420px;height:420px;border-radius:50%;
      right:-180px;top:110px;
      background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(139,92,246,.14));
      filter:blur(8px);
    }
    .hero-copy{position:relative;z-index:2}
    .hero-badges{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:18px;
    }
    .soft-badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 12px;
      border-radius:999px;
      color:#2857c5;
      background:rgba(255,255,255,.82);
      border:1px solid rgba(47,109,246,.14);
      font-weight:800;
      font-size:13px;
      box-shadow:0 10px 25px rgba(31,72,130,.07);
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-top:30px;
    }
    .hero-note{
      margin-top:20px;
      display:flex;
      align-items:center;
      gap:10px;
      color:#6b7b93;
      font-size:14px;
    }
    .hero-note span{
      width:9px;height:9px;border-radius:50%;
      background:var(--amber);
      box-shadow:0 0 0 5px rgba(245,158,11,.12);
      flex:0 0 auto;
    }

    .app-panel{
      position:relative;
      border-radius:var(--radius-xl);
      padding:18px;
      background:linear-gradient(145deg,rgba(255,255,255,.86),rgba(238,244,255,.86));
      border:1px solid rgba(255,255,255,.86);
      box-shadow:var(--shadow);
    }
    .app-panel::after{
      content:"";
      position:absolute;
      inset:24px -8px -8px 34px;
      border-radius:30px;
      background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(47,109,246,.05));
      z-index:-1;
      filter:blur(2px);
    }
    .device-frame{
      overflow:hidden;
      border-radius:26px;
      background:#0b1220;
      border:1px solid rgba(255,255,255,.12);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
    }
    .device-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:14px 16px;
      color:#a9b7cc;
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .dots{display:flex;gap:6px}
    .dots i{width:8px;height:8px;border-radius:50%;display:block;background:#ff6b6b}
    .dots i:nth-child(2){background:#ffd166}
    .dots i:nth-child(3){background:#22d3ee}
    .device-body{
      padding:18px;
      background:
        radial-gradient(circle at 72% 14%,rgba(34,211,238,.18),transparent 28%),
        linear-gradient(180deg,#111c2e,#0b1220);
      min-height:430px;
    }
    .search-chip{
      display:flex;align-items:center;gap:10px;
      padding:13px 14px;
      border-radius:18px;
      background:rgba(255,255,255,.08);
      color:#d7e3f6;
      border:1px solid rgba(255,255,255,.1);
      margin-bottom:16px;
    }
    .preview-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .preview-card{
      min-height:122px;
      border-radius:20px;
      padding:14px;
      color:#fff;
      background:
        linear-gradient(135deg,rgba(47,109,246,.72),rgba(139,92,246,.55)),
        radial-gradient(circle at 70% 30%,rgba(255,255,255,.22),transparent 24%);
      border:1px solid rgba(255,255,255,.12);
      position:relative;
      overflow:hidden;
    }
    .preview-card:nth-child(2){background:linear-gradient(135deg,rgba(34,211,238,.52),rgba(47,109,246,.72))}
    .preview-card:nth-child(3){background:linear-gradient(135deg,rgba(139,92,246,.72),rgba(34,211,238,.45))}
    .preview-card:nth-child(4){background:linear-gradient(135deg,rgba(47,109,246,.62),rgba(17,28,46,.86))}
    .preview-card::after{
      content:"";
      position:absolute;
      right:-24px;bottom:-24px;
      width:86px;height:86px;border-radius:26px;
      border:1px solid rgba(255,255,255,.22);
      transform:rotate(18deg);
    }
    .preview-card b{display:block;font-size:18px;margin-bottom:6px}
    .preview-card span{font-size:12px;color:rgba(255,255,255,.76)}
    .mini-list{
      margin-top:14px;
      display:grid;
      gap:10px;
    }
    .mini-row{
      display:flex;align-items:center;justify-content:space-between;
      gap:12px;
      padding:12px 13px;
      border-radius:16px;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.08);
      color:#dce7f8;
      font-size:13px;
    }
    .mini-row em{font-style:normal;color:#70e4f4;font-weight:800}

    .value-strip{
      margin-top:-22px;
      position:relative;
      z-index:5;
    }
    .value-box{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
      padding:16px;
      border-radius:26px;
      background:rgba(255,255,255,.9);
      border:1px solid rgba(47,109,246,.12);
      box-shadow:var(--shadow);
      backdrop-filter:blur(12px);
    }
    .value-item{
      display:flex;align-items:center;gap:12px;
      padding:14px;
      border-radius:20px;
      background:linear-gradient(180deg,#fff,#f7faff);
      border:1px solid rgba(47,109,246,.08);
    }
    .value-icon{
      width:38px;height:38px;border-radius:14px;
      display:grid;place-items:center;
      color:#fff;font-weight:900;
      background:linear-gradient(135deg,var(--primary),var(--cyan));
      box-shadow:0 10px 20px rgba(47,109,246,.18);
      flex:0 0 auto;
    }
    .value-item strong{display:block;font-size:15px}
    .value-item small{display:block;color:var(--muted);font-size:12px;margin-top:1px}

    .feature-wrap{
      display:grid;
      grid-template-columns:minmax(0,1.05fr) minmax(340px,.95fr);
      gap:34px;
      align-items:center;
    }
    .feature-list{
      display:grid;
      gap:16px;
    }
    .feature-item{
      display:grid;
      grid-template-columns:54px 1fr;
      gap:16px;
      align-items:start;
      padding:20px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:0 12px 30px rgba(31,72,130,.07);
      transition:var(--ease);
    }
    .feature-item:nth-child(even){transform:translateX(24px)}
    .feature-item:hover{
      transform:translateY(-3px) translateX(0);
      border-color:rgba(47,109,246,.28);
      box-shadow:var(--shadow-hover);
    }
    .feature-icon{
      width:54px;height:54px;border-radius:18px;
      display:grid;place-items:center;
      color:#fff;
      font-weight:900;
      background:linear-gradient(135deg,var(--primary),var(--violet));
    }
    .feature-item h3{margin:0 0 4px}
    .feature-item p{font-size:14px}
    .side-preview{
      border-radius:30px;
      background:linear-gradient(180deg,#fff,#f3f7ff);
      border:1px solid var(--border);
      box-shadow:var(--shadow);
      padding:26px;
      position:relative;
      overflow:hidden;
    }
    .side-preview::before{
      content:"";
      position:absolute;
      inset:auto -80px -90px auto;
      width:220px;height:220px;border-radius:50%;
      background:rgba(34,211,238,.18);
    }
    .metric-line{
      position:relative;
      display:flex;
      justify-content:space-between;
      gap:16px;
      padding:16px 0;
      border-bottom:1px solid var(--border);
    }
    .metric-line:last-child{border-bottom:0}
    .metric-line b{font-size:28px;color:var(--primary-dark)}
    .metric-line span{color:var(--muted);font-size:14px}
    .progress-soft{
      height:10px;
      border-radius:999px;
      background:#e8efff;
      overflow:hidden;
      margin-top:10px;
    }
    .progress-soft i{
      display:block;height:100%;border-radius:inherit;
      background:linear-gradient(90deg,var(--primary),var(--cyan));
    }

    .carousel-zone{
      background:linear-gradient(180deg,#eef4ff,#f9fbff);
      border-top:1px solid rgba(47,109,246,.08);
      border-bottom:1px solid rgba(47,109,246,.08);
    }
    .shot-frame{
      max-width:920px;
      margin:0 auto;
      border-radius:32px;
      padding:18px;
      background:#fff;
      border:1px solid rgba(47,109,246,.12);
      box-shadow:var(--shadow);
    }
    .browser-bar{
      display:flex;align-items:center;justify-content:space-between;
      padding:12px 14px;
      border-radius:20px 20px 0 0;
      background:#f3f7ff;
      border:1px solid #e6efff;
      border-bottom:0;
    }
    .shot-canvas{
      min-height:360px;
      padding:28px;
      border-radius:0 0 22px 22px;
      background:
        radial-gradient(circle at 80% 20%,rgba(34,211,238,.28),transparent 24%),
        radial-gradient(circle at 20% 70%,rgba(139,92,246,.18),transparent 28%),
        linear-gradient(135deg,#ffffff,#eef5ff);
      border:1px solid #e6efff;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:22px;
      align-items:center;
    }
    .abstract-visual{
      min-height:250px;
      border-radius:28px;
      background:
        linear-gradient(135deg,rgba(47,109,246,.88),rgba(34,211,238,.55)),
        radial-gradient(circle at 65% 35%,rgba(255,255,255,.44),transparent 20%);
      position:relative;
      overflow:hidden;
      box-shadow:0 18px 38px rgba(47,109,246,.22);
    }
    .abstract-visual::before,
    .abstract-visual::after{
      content:"";
      position:absolute;
      border-radius:30px;
      border:1px solid rgba(255,255,255,.35);
      background:rgba(255,255,255,.12);
    }
    .abstract-visual::before{width:130px;height:130px;left:34px;top:36px;transform:rotate(18deg)}
    .abstract-visual::after{width:180px;height:90px;right:-20px;bottom:38px;transform:rotate(-12deg)}
    .shot-info h3{font-size:26px;margin-bottom:10px}
    .shot-info ul{
      list-style:none;
      padding:0;margin:18px 0 0;
      display:grid;gap:10px;
    }
    .shot-info li{
      display:flex;gap:10px;color:#53647d;
      align-items:center;
    }
    .shot-info li::before{
      content:"";
      width:9px;height:9px;border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 4px rgba(47,109,246,.12);
      flex:0 0 auto;
    }
    .carousel-control-prev,
    .carousel-control-next{
      width:48px;height:48px;
      top:50%;
      transform:translateY(-50%);
      border-radius:50%;
      background:#fff;
      border:1px solid rgba(47,109,246,.18);
      opacity:1;
      box-shadow:0 14px 28px rgba(31,72,130,.14);
    }
    .carousel-control-prev{left:18px}
    .carousel-control-next{right:18px}
    .carousel-control-prev:hover,
    .carousel-control-next:hover{
      box-shadow:0 0 0 4px rgba(34,211,238,.12),0 18px 34px rgba(31,72,130,.18);
      border-color:rgba(34,211,238,.55);
    }
    .carousel-control-prev-icon,
    .carousel-control-next-icon{
      filter:invert(35%) sepia(89%) saturate(2074%) hue-rotate(214deg) brightness(95%);
    }
    .carousel-indicators{bottom:-48px}
    .carousel-indicators [data-bs-target]{
      width:9px;height:9px;border-radius:50%;
      background:var(--primary);
      opacity:.26;
    }
    .carousel-indicators .active{opacity:1;width:24px;border-radius:999px}

    .spec-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .spec-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:26px;
      padding:24px;
      box-shadow:0 14px 34px rgba(31,72,130,.08);
      transition:var(--ease);
    }
    .spec-card:hover{
      transform:translateY(-4px);
      border-color:rgba(47,109,246,.28);
      box-shadow:var(--shadow-hover);
    }
    .spec-head{
      display:flex;align-items:center;gap:12px;margin-bottom:18px;
    }
    .spec-icon{
      width:46px;height:46px;border-radius:16px;
      display:grid;place-items:center;
      background:#eff5ff;
      color:var(--primary-dark);
      font-weight:900;
    }
    .spec-list{
      display:grid;gap:12px;margin:0;padding:0;list-style:none;
    }
    .spec-list li{
      display:flex;justify-content:space-between;gap:12px;
      padding-top:12px;
      border-top:1px dashed #dce7fb;
      font-size:14px;
    }
    .spec-list span{color:var(--muted)}
    .spec-list b{color:#1b2a43;text-align:right}

    .reviews-grid{
      display:grid;
      grid-template-columns:repeat(12,1fr);
      gap:18px;
      align-items:start;
    }
    .review-card{
      grid-column:span 4;
      padding:22px;
      background:#fff;
      border:1px solid var(--border);
      border-radius:26px;
      box-shadow:0 14px 34px rgba(31,72,130,.08);
      transition:var(--ease);
    }
    .review-card:nth-child(2),
    .review-card:nth-child(5){margin-top:28px}
    .review-card:hover{
      transform:translateY(-4px);
      border-color:rgba(47,109,246,.28);
      box-shadow:var(--shadow-hover);
    }
    .review-head{
      display:flex;align-items:center;gap:12px;margin-bottom:14px;
    }
    .avatar{
      width:42px;height:42px;border-radius:50%;
      display:grid;place-items:center;
      color:#fff;font-weight:900;
      background:linear-gradient(135deg,var(--primary),var(--violet));
    }
    .review-head b{display:block}
    .stars{color:#fbbf24;font-size:13px;letter-spacing:1px}
    .review-card p{font-size:14px;color:#53647d}

    .download-card{
      position:relative;
      overflow:hidden;
      border-radius:32px;
      padding:34px;
      background:#fff;
      border:1px solid rgba(47,109,246,.12);
      box-shadow:var(--shadow);
    }
    .download-card::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 12% 18%,rgba(34,211,238,.16),transparent 24%),
        radial-gradient(circle at 92% 80%,rgba(139,92,246,.14),transparent 28%);
      pointer-events:none;
    }
    .download-card > *{position:relative}
    .download-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:18px;
    }
    .meta-pill{
      padding:8px 12px;
      border-radius:999px;
      background:#f2f7ff;
      border:1px solid var(--border);
      color:#52647f;
      font-weight:700;
      font-size:13px;
    }
    .download-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      justify-content:flex-end;
    }
    .checksum{
      margin-top:16px;
      color:#6b7b93;
      font-size:13px;
    }

    .accordion{
      --bs-accordion-border-width:0;
      display:grid;
      gap:14px;
    }
    .accordion-item{
      border:1px solid var(--border)!important;
      border-radius:20px!important;
      overflow:hidden;
      box-shadow:0 12px 28px rgba(31,72,130,.06);
      background:#fff;
    }
    .accordion-button{
      padding:18px 20px;
      font-weight:850;
      color:#17243a;
      background:#fff;
      border-radius:0!important;
      box-shadow:none!important;
    }
    .accordion-button:not(.collapsed){
      color:var(--primary-dark);
      background:linear-gradient(180deg,#f7fbff,#fff);
    }
    .accordion-button::after{
      border-radius:50%;
      background-color:#eef5ff;
      background-position:center;
      padding:12px;
    }
    .accordion-body{
      padding:0 20px 20px;
      color:var(--muted);
      font-size:15px;
    }

    .footer{
      position:relative;
      color:#b7c4d8;
      background:linear-gradient(180deg,#07111f,#050b14);
      padding:54px 0 28px;
      overflow:hidden;
    }
    .footer::before{
      content:"";
      position:absolute;top:0;left:0;right:0;height:2px;
      background:linear-gradient(90deg,var(--cyan),var(--primary),var(--violet));
      box-shadow:0 0 22px rgba(34,211,238,.45);
    }
    .footer h3,.footer h4{color:#fff}
    .footer-brand{
      display:flex;align-items:center;gap:12px;margin-bottom:14px;
    }
    .footer p{color:#95a6bd;font-size:14px}
    .footer-links{
      display:grid;gap:10px;
      margin:0;padding:0;list-style:none;
    }
    .footer-links a{
      color:#aebbd0;
      font-size:14px;
      display:inline-flex;
      width:max-content;
      position:relative;
    }
    .footer-links a::after{
      content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;
      background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:var(--ease);
    }
    .footer-links a:hover{color:#fff}
    .footer-links a:hover::after{transform:scaleX(1)}
    .age-box{
      border:1px solid rgba(245,158,11,.28);
      background:rgba(245,158,11,.08);
      color:#f8d49a;
      border-radius:18px;
      padding:16px;
      font-size:14px;
    }
    .footer-bottom{
      margin-top:34px;
      padding-top:22px;
      border-top:1px solid rgba(255,255,255,.08);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:#8798af;
      font-size:13px;
    }

    .form-control{
      border-radius:16px;
      border:1px solid #dce7fb;
      padding:12px 15px;
      background:#fff;
      color:#1d2a42;
      transition:var(--ease);
      box-shadow:none;
    }
    .form-control:focus{
      border-color:rgba(47,109,246,.55);
      box-shadow:0 0 0 4px rgba(47,109,246,.10);
    }

    @media (max-width: 991.98px){
      h1{font-size:38px}
      h2{font-size:30px}
      .section{padding:64px 0}
      .navbar-collapse{
        margin-top:14px;
        padding:12px;
        border-radius:20px;
        background:rgba(255,255,255,.06);
        border:1px solid rgba(255,255,255,.08);
      }
      .navbar-nav{align-items:stretch;gap:4px}
      .nav-link{padding:12px 14px!important}
      .nav-cta{margin:10px 0 0;text-align:center;display:block}
      .hero{padding:62px 0 48px}
      .app-panel{margin-top:34px}
      .value-box{grid-template-columns:repeat(2,1fr)}
      .feature-wrap{grid-template-columns:1fr}
      .feature-item:nth-child(even){transform:none}
      .shot-canvas{grid-template-columns:1fr}
      .spec-grid{grid-template-columns:1fr}
      .review-card{grid-column:span 6}
      .download-actions{justify-content:flex-start;margin-top:24px}
    }
    @media (max-width: 767.98px){
      .brand-text{font-size:14px}
      .brand-text small{font-size:11px}
      .brand-mark{width:38px;height:38px;border-radius:14px}
      h1{font-size:32px;word-break:break-word}
      h2{font-size:26px}
      .lead-text{font-size:15px}
      .hero-actions .btn,
      .download-actions .btn{width:100%}
      .value-box{grid-template-columns:1fr;padding:12px}
      .preview-grid{grid-template-columns:1fr}
      .device-body{min-height:auto}
      .feature-item{grid-template-columns:46px 1fr;padding:18px}
      .feature-icon{width:46px;height:46px;border-radius:16px}
      .shot-frame{padding:10px}
      .shot-canvas{padding:18px;min-height:auto}
      .abstract-visual{min-height:190px}
      .carousel-control-prev,.carousel-control-next{width:40px;height:40px}
      .carousel-control-prev{left:6px}
      .carousel-control-next{right:6px}
      .review-card{grid-column:span 12;margin-top:0!important}
      .download-card{padding:24px}
      .footer-bottom{align-items:flex-start;flex-direction:column}
    }
    @media (max-width: 520px){
      .container{padding-left:18px;padding-right:18px}
      .soft-badge{font-size:12px}
      .hero-badges{gap:8px}
      .section-title{text-align:left}
      .eyebrow{font-size:12px}
      .metric-line{display:block}
      .metric-line b{display:block;margin-bottom:2px}
    }

/* roulang page: category1 */
:root {
      --color-primary: #2F6DF6;
      --color-primary-dark: #1E4FD3;
      --color-cyan: #22D3EE;
      --color-violet: #8B5CF6;
      --color-bg: #F6F9FF;
      --color-bg-soft: #EEF4FF;
      --color-surface: #FFFFFF;
      --color-dark: #07111F;
      --color-dark-2: #0B1220;
      --color-text: #162033;
      --color-muted: #64748B;
      --color-border: #E3ECFF;
      --color-border-strong: rgba(47, 109, 246, .18);
      --color-warning: #F59E0B;
      --shadow-sm: 0 10px 28px rgba(31, 72, 130, .08);
      --shadow-md: 0 18px 45px rgba(31, 72, 130, .12);
      --shadow-lg: 0 26px 68px rgba(31, 72, 130, .16);
      --radius-sm: 14px;
      --radius-md: 20px;
      --radius-lg: 28px;
      --radius-pill: 999px;
      --transition: all .28s ease;
      --font-base: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: var(--font-base);
      color: var(--color-text);
      background:
        radial-gradient(circle at 12% 8%, rgba(34, 211, 238, .16), transparent 28%),
        radial-gradient(circle at 88% 14%, rgba(139, 92, 246, .12), transparent 26%),
        linear-gradient(180deg, #F9FBFF 0%, var(--color-bg) 46%, #FFFFFF 100%);
      line-height: 1.7;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

    img,
    svg {
      max-width: 100%;
      display: block;
    }

    button,
    input {
      font-family: inherit;
    }

    ::selection {
      background: rgba(47, 109, 246, .18);
      color: var(--color-primary-dark);
    }

    .container {
      max-width: 1180px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: linear-gradient(180deg, rgba(7, 17, 31, .98), rgba(11, 18, 32, .96));
      border-bottom: 1px solid rgba(148, 163, 184, .16);
      box-shadow: 0 14px 36px rgba(2, 8, 23, .22);
      backdrop-filter: blur(16px);
    }

    .navbar {
      min-height: 76px;
      padding: 0;
    }

    .navbar-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      color: #FFFFFF;
      padding: 12px 0;
      margin-right: 28px;
    }

    .navbar-brand:hover,
    .navbar-brand:focus {
      color: #FFFFFF;
    }

    .brand-mark {
      width: 46px;
      height: 46px;
      border-radius: 16px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex: 0 0 auto;
      color: #FFFFFF;
      font-weight: 900;
      letter-spacing: -.04em;
      background:
        linear-gradient(135deg, var(--color-primary) 0%, var(--color-cyan) 48%, var(--color-violet) 100%);
      box-shadow: 0 0 0 1px rgba(255, 255, 255, .12) inset, 0 0 24px rgba(34, 211, 238, .34);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      font-weight: 800;
      letter-spacing: -.02em;
      line-height: 1.15;
      font-size: 16px;
      color: #F8FAFC;
    }

    .brand-text small {
      margin-top: 4px;
      color: rgba(226, 232, 240, .68);
      font-size: 12px;
      font-weight: 500;
      letter-spacing: 0;
    }

    .navbar-nav {
      gap: 8px;
      align-items: center;
    }

    .navbar .nav-link {
      position: relative;
      color: rgba(226, 232, 240, .78);
      font-size: 15px;
      font-weight: 700;
      padding: 26px 14px;
      border-radius: 0;
    }

    .navbar .nav-link::after {
      content: "";
      position: absolute;
      left: 14px;
      right: 14px;
      bottom: 16px;
      height: 3px;
      border-radius: var(--radius-pill);
      background: linear-gradient(90deg, var(--color-cyan), var(--color-violet));
      transform: scaleX(0);
      transform-origin: center;
      opacity: 0;
      transition: var(--transition);
      box-shadow: 0 0 14px rgba(34, 211, 238, .45);
    }

    .navbar .nav-link:hover,
    .navbar .nav-link:focus,
    .navbar .nav-link.active {
      color: #FFFFFF;
    }

    .navbar .nav-link:hover::after,
    .navbar .nav-link.active::after {
      transform: scaleX(1);
      opacity: 1;
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      margin-left: 18px;
      padding: 0 20px;
      border-radius: var(--radius-pill);
      color: #FFFFFF;
      font-weight: 800;
      font-size: 14px;
      background: linear-gradient(135deg, var(--color-primary), var(--color-violet));
      box-shadow: 0 0 0 1px rgba(255, 255, 255, .13) inset, 0 12px 28px rgba(47, 109, 246, .32);
    }

    .nav-cta:hover,
    .nav-cta:focus {
      color: #FFFFFF;
      transform: translateY(-2px);
      box-shadow: 0 0 0 1px rgba(34, 211, 238, .44) inset, 0 0 26px rgba(34, 211, 238, .28), 0 16px 34px rgba(47, 109, 246, .38);
    }

    .navbar-toggler {
      border: 1px solid rgba(226, 232, 240, .18);
      border-radius: 14px;
      padding: 9px 11px;
      box-shadow: none !important;
    }

    .navbar-toggler:focus-visible,
    .btn:focus-visible,
    .form-control:focus-visible,
    .filter-chip:focus-visible,
    .index-action:focus-visible,
    .accordion-button:focus-visible {
      outline: 3px solid rgba(34, 211, 238, .44);
      outline-offset: 3px;
      box-shadow: none;
    }

    .navbar-toggler-icon {
      filter: invert(1) grayscale(1) brightness(1.9);
    }

    .btn {
      border: 0;
      border-radius: var(--radius-pill);
      font-weight: 800;
      padding: 12px 22px;
      transition: var(--transition);
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--color-primary), #5B8CFF);
      color: #FFFFFF;
      box-shadow: 0 14px 30px rgba(47, 109, 246, .28);
    }

    .btn-primary:hover,
    .btn-primary:active {
      transform: translateY(-2px);
      background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
      box-shadow: 0 18px 40px rgba(47, 109, 246, .34), 0 0 0 1px rgba(34, 211, 238, .24) inset;
    }

    .btn-outline-primary {
      color: var(--color-primary-dark);
      background: #FFFFFF;
      border: 1px solid rgba(47, 109, 246, .22);
      box-shadow: 0 10px 24px rgba(31, 72, 130, .08);
    }

    .btn-outline-primary:hover,
    .btn-outline-primary:active {
      color: var(--color-primary-dark);
      background: #EEF4FF;
      border-color: rgba(47, 109, 246, .36);
      transform: translateY(-2px);
    }

    .section {
      padding: 72px 0;
    }

    .section-tight {
      padding: 56px 0;
    }

    .section-title {
      margin-bottom: 28px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 14px;
      padding: 7px 12px;
      border-radius: var(--radius-pill);
      color: var(--color-primary-dark);
      background: rgba(47, 109, 246, .08);
      border: 1px solid rgba(47, 109, 246, .12);
      font-size: 13px;
      font-weight: 800;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--color-cyan);
      box-shadow: 0 0 12px rgba(34, 211, 238, .7);
    }

    h1,
    h2,
    h3,
    h4 {
      color: #101827;
      letter-spacing: -.04em;
      line-height: 1.18;
      font-weight: 900;
    }

    h1 {
      font-size: clamp(32px, 5vw, 50px);
      margin-bottom: 18px;
    }

    h2 {
      font-size: clamp(26px, 3.4vw, 36px);
      margin-bottom: 12px;
    }

    h3 {
      font-size: 21px;
    }

    .lead {
      color: var(--color-muted);
      font-size: 17px;
      line-height: 1.8;
    }

    .zone-hero {
      position: relative;
      padding: 58px 0 42px;
      overflow: hidden;
      background:
        linear-gradient(90deg, rgba(47, 109, 246, .08) 1px, transparent 1px),
        linear-gradient(0deg, rgba(47, 109, 246, .06) 1px, transparent 1px);
      background-size: 42px 42px;
    }

    .zone-hero::before {
      content: "";
      position: absolute;
      width: 430px;
      height: 430px;
      right: -160px;
      top: -120px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(34, 211, 238, .25), rgba(139, 92, 246, .08) 48%, transparent 70%);
      pointer-events: none;
    }

    .zone-hero::after {
      content: "";
      position: absolute;
      left: -120px;
      bottom: -180px;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(47, 109, 246, .16), transparent 68%);
      pointer-events: none;
    }

    .hero-panel {
      position: relative;
      z-index: 1;
      padding: 28px;
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, .82);
      border: 1px solid rgba(47, 109, 246, .12);
      box-shadow: var(--shadow-md);
      backdrop-filter: blur(14px);
    }

    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin: 22px 0 0;
    }

    .soft-badge {
      display: inline-flex;
      align-items: center;
      min-height: 32px;
      padding: 6px 12px;
      border-radius: var(--radius-pill);
      color: var(--color-primary-dark);
      background: rgba(47, 109, 246, .08);
      border: 1px solid rgba(47, 109, 246, .12);
      font-size: 13px;
      font-weight: 800;
    }

    .soft-badge.alt {
      color: #6D28D9;
      background: rgba(139, 92, 246, .09);
      border-color: rgba(139, 92, 246, .16);
    }

    .search-card {
      position: relative;
      z-index: 1;
      padding: 24px;
      border-radius: var(--radius-lg);
      background: linear-gradient(180deg, #FFFFFF, #F8FBFF);
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-md);
    }

    .search-card .form-control {
      min-height: 52px;
      border-radius: 18px;
      border: 1px solid #D8E5FF;
      background: #FFFFFF;
      padding: 12px 16px;
      color: var(--color-text);
      box-shadow: none;
    }

    .search-card .form-control:focus {
      border-color: rgba(47, 109, 246, .5);
      box-shadow: 0 0 0 4px rgba(47, 109, 246, .12);
    }

    .quick-metrics {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
      margin-top: 18px;
    }

    .metric-mini {
      padding: 15px;
      border-radius: 18px;
      background: #F6F9FF;
      border: 1px solid rgba(47, 109, 246, .12);
    }

    .metric-mini strong {
      display: block;
      color: #0F172A;
      font-size: 22px;
      line-height: 1;
      letter-spacing: -.03em;
    }

    .metric-mini span {
      display: block;
      margin-top: 8px;
      color: var(--color-muted);
      font-size: 13px;
      font-weight: 700;
    }

    .filter-wrap {
      position: sticky;
      top: 76px;
      z-index: 10;
      padding: 14px 0;
      background: rgba(246, 249, 255, .86);
      border-bottom: 1px solid rgba(47, 109, 246, .09);
      backdrop-filter: blur(16px);
    }

    .filter-scroll {
      display: flex;
      gap: 10px;
      overflow-x: auto;
      padding: 4px 2px 8px;
      scrollbar-width: thin;
      scrollbar-color: rgba(47, 109, 246, .42) transparent;
    }

    .filter-chip {
      flex: 0 0 auto;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 40px;
      padding: 0 16px;
      border-radius: var(--radius-pill);
      border: 1px solid rgba(47, 109, 246, .14);
      background: #FFFFFF;
      color: var(--color-muted);
      font-size: 14px;
      font-weight: 800;
      box-shadow: 0 8px 18px rgba(31, 72, 130, .06);
      cursor: pointer;
    }

    .filter-chip:hover,
    .filter-chip.active {
      color: #FFFFFF;
      border-color: transparent;
      background: linear-gradient(135deg, var(--color-primary), var(--color-violet));
      box-shadow: 0 12px 26px rgba(47, 109, 246, .24), 0 0 18px rgba(34, 211, 238, .12);
      transform: translateY(-1px);
    }

    .index-layout {
      align-items: flex-start;
    }

    .index-list {
      display: grid;
      gap: 18px;
    }

    .index-card {
      position: relative;
      display: grid;
      grid-template-columns: 196px 1fr;
      gap: 22px;
      padding: 18px;
      border-radius: var(--radius-lg);
      background: var(--color-surface);
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      overflow: hidden;
    }

    .index-card::after {
      content: "";
      position: absolute;
      inset: auto 20px 0 220px;
      height: 3px;
      border-radius: var(--radius-pill);
      background: linear-gradient(90deg, rgba(47, 109, 246, .1), rgba(34, 211, 238, .38), rgba(139, 92, 246, .18));
      opacity: 0;
      transition: var(--transition);
    }

    .index-card:hover {
      transform: translateY(-4px);
      border-color: rgba(47, 109, 246, .28);
      box-shadow: var(--shadow-md);
    }

    .index-card:hover::after {
      opacity: 1;
    }

    .cover-abstract {
      position: relative;
      min-height: 148px;
      border-radius: 22px;
      overflow: hidden;
      background:
        radial-gradient(circle at 22% 24%, rgba(255, 255, 255, .86) 0 8%, transparent 9%),
        radial-gradient(circle at 78% 18%, rgba(34, 211, 238, .42), transparent 24%),
        linear-gradient(135deg, rgba(47, 109, 246, .92), rgba(139, 92, 246, .82));
      box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .24);
    }

    .cover-abstract::before {
      content: "";
      position: absolute;
      inset: 18px;
      border-radius: 18px;
      border: 1px solid rgba(255, 255, 255, .24);
      background:
        linear-gradient(90deg, rgba(255, 255, 255, .18) 1px, transparent 1px),
        linear-gradient(0deg, rgba(255, 255, 255, .14) 1px, transparent 1px);
      background-size: 22px 22px;
      opacity: .78;
    }

    .cover-abstract::after {
      content: attr(data-label);
      position: absolute;
      left: 16px;
      bottom: 16px;
      padding: 7px 12px;
      border-radius: var(--radius-pill);
      color: #FFFFFF;
      font-size: 13px;
      font-weight: 900;
      background: rgba(7, 17, 31, .52);
      border: 1px solid rgba(255, 255, 255, .18);
      backdrop-filter: blur(8px);
    }

    .index-content {
      min-width: 0;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .index-meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      margin-bottom: 10px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 26px;
      padding: 4px 9px;
      border-radius: var(--radius-pill);
      color: var(--color-primary-dark);
      background: rgba(47, 109, 246, .08);
      border: 1px solid rgba(47, 109, 246, .11);
      font-size: 12px;
      font-weight: 800;
      white-space: nowrap;
    }

    .tag.purple {
      color: #6D28D9;
      background: rgba(139, 92, 246, .09);
      border-color: rgba(139, 92, 246, .14);
    }

    .tag.cyan {
      color: #0E7490;
      background: rgba(34, 211, 238, .11);
      border-color: rgba(34, 211, 238, .2);
    }

    .time-text {
      color: var(--color-muted);
      font-size: 13px;
      font-weight: 700;
    }

    .index-card h3 {
      margin-bottom: 8px;
      font-size: 22px;
    }

    .index-card p {
      margin-bottom: 16px;
      color: var(--color-muted);
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .index-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: center;
    }

    .index-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 38px;
      padding: 0 14px;
      border-radius: var(--radius-pill);
      color: var(--color-primary-dark);
      background: #FFFFFF;
      border: 1px solid rgba(47, 109, 246, .18);
      font-size: 13px;
      font-weight: 900;
      box-shadow: 0 8px 20px rgba(31, 72, 130, .06);
    }

    .index-action:hover {
      color: #FFFFFF;
      background: var(--color-primary);
      border-color: var(--color-primary);
      transform: translateY(-1px);
      box-shadow: 0 12px 26px rgba(47, 109, 246, .22);
    }

    .side-panel {
      position: sticky;
      top: 152px;
      display: grid;
      gap: 16px;
    }

    .side-card,
    .notice-card,
    .download-card,
    .info-card {
      padding: 22px;
      border-radius: var(--radius-lg);
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-sm);
    }

    .side-card h3,
    .notice-card h3,
    .download-card h3,
    .info-card h3 {
      margin-bottom: 14px;
      font-size: 19px;
    }

    .hot-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .update-list {
      display: grid;
      gap: 12px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .update-list li {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      padding-bottom: 12px;
      border-bottom: 1px solid rgba(47, 109, 246, .08);
      color: var(--color-muted);
      font-size: 14px;
    }

    .update-list li:last-child {
      padding-bottom: 0;
      border-bottom: 0;
    }

    .update-list strong {
      color: #0F172A;
      font-weight: 900;
    }

    .notice-card {
      background: linear-gradient(180deg, #FFFFFF, #FFF9EC);
      border-color: rgba(245, 158, 11, .2);
    }

    .notice-card .warning {
      display: inline-flex;
      align-items: center;
      margin-bottom: 10px;
      padding: 5px 10px;
      border-radius: var(--radius-pill);
      color: #92400E;
      background: rgba(245, 158, 11, .13);
      font-size: 12px;
      font-weight: 900;
    }

    .download-card {
      background:
        radial-gradient(circle at 88% 12%, rgba(34, 211, 238, .22), transparent 28%),
        linear-gradient(135deg, #FFFFFF, #F2F6FF);
      overflow: hidden;
    }

    .download-card .btn {
      width: 100%;
      margin-top: 10px;
    }

    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .process-card {
      position: relative;
      padding: 24px;
      border-radius: var(--radius-lg);
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .process-card:hover {
      transform: translateY(-4px);
      border-color: rgba(47, 109, 246, .24);
      box-shadow: var(--shadow-md);
    }

    .process-num {
      width: 42px;
      height: 42px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      border-radius: 15px;
      color: #FFFFFF;
      font-weight: 900;
      background: linear-gradient(135deg, var(--color-primary), var(--color-cyan));
      box-shadow: 0 14px 24px rgba(47, 109, 246, .2);
    }

    .process-card p {
      margin: 0;
      color: var(--color-muted);
      font-size: 14px;
    }

    .cta-band {
      position: relative;
      padding: 34px;
      border-radius: 32px;
      background:
        radial-gradient(circle at 12% 20%, rgba(34, 211, 238, .18), transparent 32%),
        linear-gradient(135deg, #07111F, #102446 56%, #182B55);
      color: #E5E7EB;
      overflow: hidden;
      box-shadow: var(--shadow-lg);
    }

    .cta-band::after {
      content: "";
      position: absolute;
      right: -80px;
      top: -90px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(139, 92, 246, .38), transparent 66%);
    }

    .cta-band h2 {
      color: #FFFFFF;
    }

    .cta-band p {
      color: rgba(226, 232, 240, .78);
      margin: 0;
    }

    .cta-band .btn-outline-primary {
      color: #FFFFFF;
      background: rgba(255, 255, 255, .08);
      border-color: rgba(255, 255, 255, .18);
      box-shadow: none;
    }

    .cta-band .btn-outline-primary:hover {
      background: rgba(255, 255, 255, .14);
      border-color: rgba(34, 211, 238, .38);
    }

    .accordion {
      display: grid;
      gap: 12px;
    }

    .accordion-item {
      overflow: hidden;
      border: 1px solid var(--color-border);
      border-radius: 20px !important;
      background: #FFFFFF;
      box-shadow: 0 10px 28px rgba(31, 72, 130, .06);
    }

    .accordion-button {
      padding: 18px 22px;
      color: #101827;
      background: #FFFFFF;
      font-weight: 900;
      box-shadow: none !important;
      border-radius: 20px !important;
    }

    .accordion-button:not(.collapsed) {
      color: var(--color-primary-dark);
      background: linear-gradient(180deg, #FFFFFF, #F4F8FF);
    }

    .accordion-button::after {
      width: 1.05rem;
      height: 1.05rem;
      background-size: 1.05rem;
      filter: hue-rotate(190deg) saturate(1.4);
    }

    .accordion-body {
      padding: 0 22px 20px;
      color: var(--color-muted);
    }

    .footer {
      position: relative;
      padding: 58px 0 28px;
      color: rgba(226, 232, 240, .74);
      background: linear-gradient(180deg, #07111F, #050B14);
      overflow: hidden;
    }

    .footer::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--color-primary), var(--color-cyan), var(--color-violet));
      box-shadow: 0 0 22px rgba(34, 211, 238, .34);
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
      color: #FFFFFF;
    }

    .footer-brand h3 {
      color: #FFFFFF;
      font-size: 20px;
      letter-spacing: -.03em;
    }

    .footer p {
      max-width: 370px;
      margin: 0;
      color: rgba(226, 232, 240, .66);
      font-size: 14px;
    }

    .footer h4 {
      color: #FFFFFF;
      font-weight: 900;
    }

    .footer-links {
      display: grid;
      gap: 10px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .footer-links a {
      position: relative;
      color: rgba(226, 232, 240, .68);
      font-size: 14px;
    }

    .footer-links a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: -4px;
      width: 0;
      height: 2px;
      border-radius: var(--radius-pill);
      background: var(--color-cyan);
      transition: var(--transition);
    }

    .footer-links a:hover {
      color: #FFFFFF;
    }

    .footer-links a:hover::after {
      width: 100%;
    }

    .age-box {
      padding: 18px;
      border-radius: 20px;
      color: rgba(255, 247, 237, .84);
      background: rgba(245, 158, 11, .10);
      border: 1px solid rgba(245, 158, 11, .24);
      font-size: 14px;
    }

    .age-box strong {
      color: #FCD34D;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      margin-top: 38px;
      padding-top: 22px;
      border-top: 1px solid rgba(148, 163, 184, .14);
      color: rgba(226, 232, 240, .54);
      font-size: 13px;
    }

    @media (max-width: 991.98px) {
      .navbar {
        min-height: 68px;
        padding: 10px 0;
      }

      .navbar-collapse {
        margin-top: 12px;
        padding: 12px;
        border-radius: 20px;
        background: rgba(15, 23, 42, .96);
        border: 1px solid rgba(148, 163, 184, .16);
      }

      .navbar .nav-link {
        padding: 13px 12px;
        border-radius: 14px;
      }

      .navbar .nav-link::after {
        left: 12px;
        right: auto;
        bottom: 7px;
        width: 42px;
      }

      .navbar .nav-link:hover {
        background: rgba(255, 255, 255, .05);
      }

      .nav-cta {
        width: 100%;
        margin: 10px 0 0;
      }

      .zone-hero {
        padding: 42px 0 34px;
      }

      .filter-wrap {
        top: 68px;
      }

      .index-card {
        grid-template-columns: 160px 1fr;
      }

      .index-card::after {
        left: 18px;
        right: 18px;
        inset: auto 18px 0 18px;
      }

      .side-panel {
        position: static;
        margin-top: 8px;
      }

      .process-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 767.98px) {
      .section,
      .section-tight {
        padding: 48px 0;
      }

      .brand-text {
        max-width: 214px;
        font-size: 14px;
      }

      .brand-text small {
        font-size: 11px;
      }

      .brand-mark {
        width: 42px;
        height: 42px;
        border-radius: 14px;
      }

      .hero-panel,
      .search-card,
      .cta-band {
        padding: 22px;
        border-radius: 24px;
      }

      .quick-metrics {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .index-card {
        grid-template-columns: 1fr;
        padding: 16px;
      }

      .cover-abstract {
        min-height: 168px;
      }

      .index-card h3 {
        font-size: 20px;
      }

      .process-grid {
        grid-template-columns: 1fr;
      }

      .cta-band .d-flex {
        align-items: stretch !important;
      }

      .cta-band .btn {
        width: 100%;
      }

      .footer-bottom {
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      h1 {
        font-size: 31px;
      }

      .lead {
        font-size: 15px;
      }

      .hero-badges {
        gap: 8px;
      }

      .soft-badge,
      .filter-chip {
        font-size: 12px;
      }

      .quick-metrics {
        grid-template-columns: 1fr;
      }

      .index-actions {
        flex-direction: column;
        align-items: stretch;
      }

      .index-action {
        width: 100%;
      }

      .section-title {
        margin-bottom: 22px;
      }
    }

/* roulang page: category2 */
:root{
      --primary:#2F6DF6;
      --primary-dark:#1F55D8;
      --cyan:#22D3EE;
      --violet:#8B5CF6;
      --nav:#07111F;
      --nav-soft:#0B1220;
      --bg:#F6F9FF;
      --bg-soft:#EEF4FF;
      --surface:#FFFFFF;
      --text:#152033;
      --muted:#66748A;
      --light-text:#AEBBD0;
      --border:#E3ECFF;
      --border-strong:rgba(47,109,246,.18);
      --warning:#F59E0B;
      --radius-lg:28px;
      --radius-md:20px;
      --radius-sm:14px;
      --shadow:0 18px 45px rgba(31,72,130,.10);
      --shadow-hover:0 24px 55px rgba(31,72,130,.16);
      --glow:0 0 0 4px rgba(34,211,238,.16),0 0 24px rgba(34,211,238,.22);
      --transition:.25s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 10%, rgba(34,211,238,.14), transparent 28%),
        radial-gradient(circle at 86% 6%, rgba(139,92,246,.12), transparent 30%),
        linear-gradient(180deg,#F8FBFF 0%,var(--bg) 46%,#FFFFFF 100%);
      line-height:1.7;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:color var(--transition),border-color var(--transition),background var(--transition),box-shadow var(--transition),transform var(--transition)}
    img{max-width:100%;height:auto}
    button,input{font-family:inherit}
    ::selection{background:rgba(47,109,246,.18);color:var(--text)}
    .container{max-width:1180px}
    .site-header{
      position:sticky;
      top:0;
      z-index:1030;
      background:linear-gradient(180deg,var(--nav) 0%,var(--nav-soft) 100%);
      border-bottom:1px solid rgba(255,255,255,.08);
      box-shadow:0 12px 30px rgba(7,17,31,.26);
    }
    .navbar{padding:14px 0}
    .navbar-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      min-width:0;
    }
    .navbar-brand:hover{color:#fff;transform:translateY(-1px)}
    .brand-mark{
      width:44px;
      height:44px;
      border-radius:14px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      flex:0 0 auto;
      color:#fff;
      font-weight:900;
      letter-spacing:.02em;
      background:
        linear-gradient(135deg,rgba(47,109,246,.96),rgba(34,211,238,.82) 52%,rgba(139,92,246,.9)),
        radial-gradient(circle at 30% 20%,rgba(255,255,255,.45),transparent 28%);
      box-shadow:0 10px 28px rgba(34,211,238,.24), inset 0 1px 0 rgba(255,255,255,.35);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      color:#fff;
      font-size:17px;
      font-weight:800;
      line-height:1.15;
      letter-spacing:-.02em;
      white-space:nowrap;
    }
    .brand-text small{
      margin-top:4px;
      color:var(--light-text);
      font-size:12px;
      font-weight:500;
      letter-spacing:0;
    }
    .navbar-toggler{
      border:1px solid rgba(255,255,255,.16);
      border-radius:14px;
      padding:9px 11px;
      color:#fff;
    }
    .navbar-toggler:focus{box-shadow:var(--glow)}
    .navbar-toggler-icon{filter:invert(1) grayscale(1) brightness(1.8)}
    .navbar-nav{gap:4px;align-items:stretch}
    .nav-link{
      position:relative;
      color:#D7E2F4;
      font-size:15px;
      font-weight:700;
      padding:12px 16px!important;
      border-radius:999px;
    }
    .nav-link:hover,.nav-link:focus{color:#fff;background:rgba(255,255,255,.06)}
    .nav-link.active{
      color:#fff;
      background:linear-gradient(180deg,rgba(47,109,246,.16),rgba(34,211,238,.06));
      text-shadow:0 0 18px rgba(34,211,238,.42);
    }
    .nav-link.active::after{
      content:"";
      position:absolute;
      left:16px;
      right:16px;
      bottom:5px;
      height:2px;
      border-radius:999px;
      background:linear-gradient(90deg,var(--cyan),var(--violet));
      box-shadow:0 0 12px rgba(34,211,238,.8);
    }
    .nav-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      margin-left:14px;
      padding:11px 18px;
      border-radius:999px;
      color:#fff;
      font-weight:800;
      border:1px solid rgba(34,211,238,.45);
      background:linear-gradient(135deg,rgba(47,109,246,.96),rgba(139,92,246,.88));
      box-shadow:0 0 0 1px rgba(255,255,255,.04) inset, 0 12px 30px rgba(47,109,246,.24);
    }
    .nav-cta:hover,.nav-cta:focus{color:#fff;transform:translateY(-2px);box-shadow:var(--glow)}
    .btn{
      border-radius:999px;
      font-weight:800;
      padding:12px 20px;
      border-width:1px;
      transition:transform var(--transition),box-shadow var(--transition),background var(--transition),border-color var(--transition),color var(--transition);
    }
    .btn:focus-visible,.form-control:focus,.accordion-button:focus{outline:3px solid rgba(34,211,238,.35);outline-offset:2px;box-shadow:none}
    .btn-primary{
      background:linear-gradient(135deg,var(--primary),var(--violet));
      border-color:transparent;
      box-shadow:0 16px 34px rgba(47,109,246,.24);
    }
    .btn-primary:hover,.btn-primary:active{background:linear-gradient(135deg,var(--primary-dark),var(--violet));transform:translateY(-2px);box-shadow:0 20px 42px rgba(47,109,246,.32)}
    .btn-outline-primary{
      color:var(--primary);
      border-color:rgba(47,109,246,.25);
      background:#fff;
    }
    .btn-outline-primary:hover{color:var(--primary-dark);background:#EEF4FF;border-color:rgba(47,109,246,.35);transform:translateY(-2px)}
    .btn-dark{
      background:#101B2E;
      border-color:#101B2E;
      box-shadow:0 16px 34px rgba(7,17,31,.18);
    }
    .btn-dark:hover{background:#07111F;border-color:#07111F;transform:translateY(-2px);box-shadow:0 20px 42px rgba(7,17,31,.24)}
    .section{padding:74px 0}
    .section-tight{padding:54px 0}
    .section-title{
      margin-bottom:14px;
      font-size:34px;
      line-height:1.2;
      font-weight:900;
      letter-spacing:-.04em;
      color:#111C2F;
    }
    .section-desc{
      max-width:720px;
      margin:0;
      color:var(--muted);
      font-size:16px;
    }
    .badge-soft,.tag{
      display:inline-flex;
      align-items:center;
      gap:6px;
      border-radius:999px;
      padding:7px 12px;
      background:rgba(47,109,246,.08);
      color:var(--primary-dark);
      border:1px solid rgba(47,109,246,.13);
      font-size:13px;
      font-weight:800;
      white-space:nowrap;
    }
    .tag-cyan{background:rgba(34,211,238,.10);color:#087F94;border-color:rgba(34,211,238,.22)}
    .tag-violet{background:rgba(139,92,246,.10);color:#6741D9;border-color:rgba(139,92,246,.18)}
    .hero{
      position:relative;
      padding:70px 0 56px;
      overflow:hidden;
      background:
        linear-gradient(90deg,rgba(47,109,246,.07) 1px,transparent 1px),
        linear-gradient(180deg,rgba(47,109,246,.07) 1px,transparent 1px);
      background-size:34px 34px;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 74% 30%,rgba(34,211,238,.22),transparent 22%),
        radial-gradient(circle at 20% 18%,rgba(139,92,246,.12),transparent 24%),
        linear-gradient(180deg,rgba(255,255,255,.7),rgba(246,249,255,.9));
      pointer-events:none;
    }
    .hero .container{position:relative;z-index:1}
    .hero-kicker{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
    .hero h1{
      max-width:760px;
      margin:0 0 18px;
      font-size:50px;
      line-height:1.15;
      font-weight:950;
      letter-spacing:-.055em;
      color:#101B2E;
    }
    .hero p{
      max-width:680px;
      margin:0 0 26px;
      color:#5E6E86;
      font-size:17px;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px}
    .summary-panel{
      position:relative;
      padding:26px;
      border-radius:var(--radius-lg);
      background:rgba(255,255,255,.86);
      border:1px solid rgba(47,109,246,.12);
      box-shadow:var(--shadow);
      backdrop-filter:blur(10px);
      overflow:hidden;
    }
    .summary-panel::after{
      content:"";
      position:absolute;
      width:180px;
      height:180px;
      right:-70px;
      top:-70px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(34,211,238,.28),transparent 70%);
    }
    .summary-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      margin-bottom:18px;
      position:relative;
      z-index:1;
    }
    .summary-icon{
      width:56px;
      height:56px;
      border-radius:18px;
      display:flex;
      align-items:center;
      justify-content:center;
      color:#fff;
      font-size:24px;
      font-weight:900;
      background:linear-gradient(135deg,var(--primary),var(--cyan));
      box-shadow:0 12px 26px rgba(47,109,246,.22);
    }
    .summary-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:12px;
      position:relative;
      z-index:1;
    }
    .summary-item{
      padding:16px;
      border-radius:18px;
      background:#F8FBFF;
      border:1px solid var(--border);
    }
    .summary-item strong{
      display:block;
      font-size:24px;
      line-height:1.1;
      color:#101B2E;
      letter-spacing:-.03em;
    }
    .summary-item span{display:block;margin-top:6px;color:var(--muted);font-size:13px}
    .stat-card,.feature-card,.timeline-card,.side-card,.cta-card,.accordion-item{
      background:var(--surface);
      border:1px solid var(--border);
      border-radius:var(--radius-md);
      box-shadow:var(--shadow);
    }
    .stat-card{
      padding:22px;
      transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
      height:100%;
    }
    .stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--border-strong)}
    .stat-card .num{
      display:block;
      font-size:31px;
      line-height:1;
      font-weight:950;
      color:#101B2E;
      letter-spacing:-.04em;
    }
    .stat-card .label{display:block;margin-top:8px;color:var(--muted);font-size:14px}
    .featured-wrap{
      margin-top:28px;
      display:flex;
      gap:18px;
      overflow-x:auto;
      padding:4px 4px 18px;
      scroll-snap-type:x mandatory;
    }
    .featured-wrap::-webkit-scrollbar{height:8px}
    .featured-wrap::-webkit-scrollbar-thumb{background:rgba(47,109,246,.22);border-radius:999px}
    .feature-card{
      position:relative;
      min-width:286px;
      max-width:286px;
      overflow:hidden;
      scroll-snap-align:start;
      transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
    }
    .feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:var(--border-strong)}
    .cover{
      height:156px;
      padding:18px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      background:
        radial-gradient(circle at 26% 28%,rgba(255,255,255,.82),transparent 18%),
        linear-gradient(135deg,rgba(47,109,246,.88),rgba(34,211,238,.62) 48%,rgba(139,92,246,.84));
      color:#fff;
    }
    .cover.alt{background:linear-gradient(135deg,#1F55D8,#8B5CF6 54%,#22D3EE)}
    .cover.light{background:linear-gradient(135deg,#2F6DF6,#74D7FF 56%,#B99BFF)}
    .cover .cover-label{
      align-self:flex-start;
      padding:6px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.18);
      border:1px solid rgba(255,255,255,.25);
      font-size:12px;
      font-weight:800;
      backdrop-filter:blur(8px);
    }
    .cover .shape-row{display:flex;gap:8px;align-items:flex-end}
    .cover .shape{
      border-radius:12px;
      background:rgba(255,255,255,.28);
      border:1px solid rgba(255,255,255,.18);
    }
    .shape.s1{width:58px;height:38px}.shape.s2{width:42px;height:68px}.shape.s3{width:78px;height:52px}
    .feature-body{padding:20px}
    .feature-body h3{font-size:20px;font-weight:900;letter-spacing:-.03em;margin:0 0 8px}
    .feature-body p{margin:0 0 14px;color:var(--muted);font-size:14px;line-height:1.65}
    .tag-row{display:flex;flex-wrap:wrap;gap:8px}
    .timeline-shell{
      display:grid;
      grid-template-columns:minmax(0,1fr) 330px;
      gap:26px;
      align-items:start;
    }
    .timeline{
      position:relative;
      padding-left:22px;
    }
    .timeline::before{
      content:"";
      position:absolute;
      left:8px;
      top:4px;
      bottom:4px;
      width:2px;
      background:linear-gradient(180deg,var(--cyan),rgba(47,109,246,.22),var(--violet));
      border-radius:999px;
    }
    .timeline-card{
      position:relative;
      padding:24px;
      margin-bottom:18px;
      transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
    }
    .timeline-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--border-strong)}
    .timeline-card::before{
      content:"";
      position:absolute;
      left:-21px;
      top:28px;
      width:14px;
      height:14px;
      border-radius:50%;
      background:#fff;
      border:4px solid var(--primary);
      box-shadow:0 0 0 5px rgba(47,109,246,.12);
    }
    .timeline-head{
      display:flex;
      justify-content:space-between;
      gap:12px;
      align-items:flex-start;
      margin-bottom:10px;
    }
    .timeline-date{
      flex:0 0 auto;
      padding:6px 10px;
      border-radius:999px;
      background:#EEF4FF;
      color:var(--primary-dark);
      font-size:13px;
      font-weight:900;
    }
    .timeline-card h3{font-size:21px;font-weight:900;letter-spacing:-.03em;margin:0}
    .timeline-card p{color:var(--muted);margin:0 0 14px;font-size:15px}
    .timeline-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
    .sticky-panel{
      position:sticky;
      top:98px;
      display:grid;
      gap:16px;
    }
    .side-card{padding:22px}
    .side-card h3{font-size:18px;font-weight:900;margin:0 0 14px;letter-spacing:-.02em}
    .quick-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .quick-list a,.quick-list span{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
      padding:12px 14px;
      border-radius:16px;
      background:#F8FBFF;
      border:1px solid var(--border);
      color:#25344C;
      font-weight:800;
      font-size:14px;
    }
    .quick-list a:hover{color:var(--primary-dark);border-color:var(--border-strong);transform:translateX(3px)}
    .form-control{
      border-radius:16px;
      border:1px solid var(--border);
      padding:13px 15px;
      background:#FBFDFF;
      color:var(--text);
    }
    .form-control::placeholder{color:#91A1B8}
    .form-control:focus{border-color:rgba(47,109,246,.45);background:#fff;box-shadow:0 0 0 4px rgba(47,109,246,.10)}
    .notice-box{
      padding:16px;
      border-radius:18px;
      background:rgba(245,158,11,.08);
      border:1px solid rgba(245,158,11,.22);
      color:#78500A;
      font-size:14px;
    }
    .process-card{
      padding:24px;
      height:100%;
      border-radius:var(--radius-md);
      background:linear-gradient(180deg,#fff,#F9FBFF);
      border:1px solid var(--border);
      box-shadow:var(--shadow);
    }
    .process-step{
      width:38px;
      height:38px;
      border-radius:14px;
      display:flex;
      align-items:center;
      justify-content:center;
      background:linear-gradient(135deg,var(--primary),var(--cyan));
      color:#fff;
      font-weight:950;
      margin-bottom:14px;
    }
    .process-card h3{font-size:19px;font-weight:900;margin-bottom:8px;letter-spacing:-.02em}
    .process-card p{margin:0;color:var(--muted);font-size:14px}
    .cta-card{
      position:relative;
      padding:34px;
      overflow:hidden;
      background:
        radial-gradient(circle at 86% 15%,rgba(34,211,238,.18),transparent 26%),
        linear-gradient(135deg,#FFFFFF 0%,#F4F8FF 100%);
    }
    .cta-card::before{
      content:"";
      position:absolute;
      inset:auto -70px -90px auto;
      width:230px;
      height:230px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(139,92,246,.16),transparent 70%);
    }
    .cta-card h2{font-size:31px;font-weight:950;letter-spacing:-.04em;margin-bottom:10px}
    .cta-card p{color:var(--muted);margin-bottom:22px;max-width:690px}
    .cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}
    .accordion{display:grid;gap:12px}
    .accordion-item{overflow:hidden}
    .accordion-button{
      padding:18px 20px;
      border-radius:var(--radius-md)!important;
      background:#fff;
      color:#101B2E;
      font-weight:900;
      box-shadow:none;
    }
    .accordion-button:not(.collapsed){
      background:#F2F7FF;
      color:var(--primary-dark);
      box-shadow:none;
    }
    .accordion-button::after{
      width:22px;
      height:22px;
      border-radius:50%;
      background-color:rgba(47,109,246,.10);
      background-position:center;
      background-size:13px;
    }
    .accordion-body{
      padding:0 20px 20px;
      color:var(--muted);
      font-size:15px;
      background:#fff;
    }
    .footer{
      position:relative;
      padding:56px 0 26px;
      color:#D7E2F4;
      background:linear-gradient(180deg,#0B1220 0%,#07111F 100%);
    }
    .footer::before{
      content:"";
      position:absolute;
      left:0;
      right:0;
      top:0;
      height:2px;
      background:linear-gradient(90deg,var(--cyan),var(--primary),var(--violet));
      box-shadow:0 0 18px rgba(34,211,238,.6);
    }
    .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
    .footer h3,.footer h4{color:#fff;font-weight:900}
    .footer p{color:#AEBBD0;margin:0;max-width:360px}
    .footer-links{list-style:none;margin:0;padding:0;display:grid;gap:10px}
    .footer-links a{color:#AEBBD0;position:relative}
    .footer-links a:hover{color:var(--cyan);padding-left:4px}
    .age-box{
      padding:18px;
      border-radius:18px;
      background:rgba(245,158,11,.10);
      border:1px solid rgba(245,158,11,.25);
      color:#FFE5B0;
      font-size:14px;
    }
    .footer-bottom{
      margin-top:34px;
      padding-top:20px;
      border-top:1px solid rgba(255,255,255,.10);
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:#8FA0B9;
      font-size:13px;
    }
    @media (max-width: 991.98px){
      .navbar-collapse{
        margin-top:14px;
        padding:12px;
        border-radius:20px;
        background:rgba(255,255,255,.05);
        border:1px solid rgba(255,255,255,.08);
      }
      .navbar-nav{gap:6px}
      .nav-link{border-radius:14px}
      .nav-link.active::after{left:14px;right:auto;width:42px}
      .nav-cta{margin:10px 0 0;width:100%}
      .hero{padding:56px 0 44px}
      .hero h1{font-size:38px}
      .timeline-shell{grid-template-columns:1fr}
      .sticky-panel{position:static}
      .section{padding:58px 0}
    }
    @media (max-width: 767.98px){
      .brand-text{font-size:14px;max-width:230px;white-space:normal}
      .brand-mark{width:40px;height:40px;border-radius:13px}
      .hero h1{font-size:32px;letter-spacing:-.04em}
      .hero p{font-size:15px}
      .hero-actions .btn,.cta-actions .btn{width:100%}
      .summary-grid{grid-template-columns:1fr}
      .section-title{font-size:28px}
      .timeline{padding-left:18px}
      .timeline-card{padding:20px}
      .timeline-card::before{left:-18px}
      .timeline-head{flex-direction:column}
      .feature-card{min-width:252px;max-width:252px}
      .cta-card{padding:24px}
      .cta-card h2{font-size:26px}
      .footer-bottom{flex-direction:column}
    }
    @media (max-width: 520px){
      .container{padding-left:18px;padding-right:18px}
      .hero-kicker{gap:8px}
      .badge-soft,.tag{font-size:12px;padding:6px 10px}
      .stat-card,.side-card,.process-card{padding:20px}
      .summary-panel{padding:20px}
      .cover{height:140px}
    }