*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; font-size: 16px; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      color: #1a1a2e;
      background: #fff;
      line-height: 1.7;
      overflow-x: hidden;
    }
    a { text-decoration: none; color: inherit; }
    ul { list-style: none; }
    img { max-width: 100%; display: block; }

    :root {
      --dark: #0a0e1a;
      --dark-2: #111827;
      --dark-3: #1a2236;
      --accent: #2563eb;
      --accent-2: #3b82f6;
      --accent-light: #60a5fa;
      --cyan: #06b6d4;
      --cyan-light: #22d3ee;
      --text: #1a1a2e;
      --text-muted: #64748b;
      --text-light: #94a3b8;
      --bg: #ffffff;
      --bg-alt: #f8fafc;
      --bg-dark: #0a0e1a;
      --border: #e8ecf1;
      --radius: 12px;
      --radius-lg: 20px;
      --shadow: 0 4px 24px rgba(0,0,0,0.06);
      --shadow-lg: 0 12px 48px rgba(0,0,0,0.1);
      --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .container { max-width: 1280px; margin: 0 auto; padding: 0 48px; }
    @media (max-width: 768px) { .container { padding: 0 24px; } }

    /* ===== Navbar ===== */
    .navbar {
      position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
      padding: 20px 0; transition: all var(--transition);
    }
    .navbar.scrolled {
      background: rgba(10,14,26,0.92);
      backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
      padding: 14px 0;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .navbar-inner { display: flex; align-items: center; justify-content: space-between; }
    .logo {
      font-size: 1.2rem; font-weight: 700; color: #fff;
      letter-spacing: 1px; white-space: nowrap;
      display: flex; align-items: center; gap: 10px;
    }
    .logo-img {
      width: 42px; height: 42px; border-radius: 50%;
      object-fit: cover; background: #fff;
      box-shadow: 0 2px 14px rgba(34,211,238,0.35);
      transition: transform var(--transition), box-shadow var(--transition);
    }
    .logo:hover .logo-img {
      transform: scale(1.08) rotate(6deg);
      box-shadow: 0 4px 20px rgba(34,211,238,0.5);
    }
    .nav-links { display: flex; gap: 36px; align-items: center; }
    .nav-links a {
      font-size: 0.9rem; font-weight: 500; color: rgba(255,255,255,0.75);
      transition: color var(--transition); position: relative; padding: 4px 0;
    }
    .nav-links a:hover { color: #fff; }
    .nav-links a::after {
      content: ''; position: absolute; bottom: -2px; left: 0;
      width: 0; height: 2px; background: linear-gradient(90deg, #3b82f6, #22d3ee);
      transition: width var(--transition);
    }
    .nav-links a:hover::after { width: 100%; }
    .nav-cta {
      padding: 8px 24px; border-radius: 100px;
      background: linear-gradient(135deg, #2563eb, #3b82f6);
      color: #fff !important; font-size: 0.85rem; font-weight: 600;
      box-shadow: 0 4px 16px rgba(37,99,235,0.3);
    }
    .nav-cta::after { display: none; }
    .nav-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 24px rgba(37,99,235,0.4); }
    .menu-toggle {
      display: none; flex-direction: column; gap: 5px; cursor: pointer;
      background: none; border: none; padding: 4px; z-index: 1001;
    }
    .menu-toggle span { width: 24px; height: 2px; background: #fff; transition: all var(--transition); border-radius: 2px; }
    @media (max-width: 900px) {
      .menu-toggle { display: flex; }
      .nav-links {
        position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
        background: #0a0e1a; flex-direction: column; padding: 100px 40px 40px;
        gap: 28px; transition: right var(--transition);
      }
      .nav-links.active { right: 0; }
      .nav-links a { color: rgba(255,255,255,0.85); font-size: 1.05rem; }
    }

    /* ===== Hero ===== */
    .hero {
      position: relative; min-height: 100vh; display: flex; align-items: center;
      background: #050810; overflow: hidden;
    }
    #heroCanvas { position: absolute; inset: 0; z-index: 0; }
    .hero::before {
      content: ''; position: absolute; inset: 0; z-index: 0;
      background-image:
        linear-gradient(rgba(59,130,246,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,0.04) 1px, transparent 1px);
      background-size: 60px 60px;
      animation: gridPulse 8s ease-in-out infinite;
      pointer-events: none;
    }
    @keyframes gridPulse { 0%,100%{opacity:.5} 50%{opacity:1} }
    .hero-glow {
      position: absolute; border-radius: 50%; z-index: 0; pointer-events: none;
      filter: blur(80px); opacity: 0.5;
    }
    .hero-glow-1 { width: 600px; height: 600px; top: -250px; right: -200px;
      background: radial-gradient(circle, rgba(37,99,235,0.3) 0%, transparent 70%);
      animation: glowFloat1 12s ease-in-out infinite; }
    .hero-glow-2 { width: 400px; height: 400px; bottom: -150px; left: -100px;
      background: radial-gradient(circle, rgba(6,182,212,0.2) 0%, transparent 70%);
      animation: glowFloat2 15s ease-in-out infinite; }
    .hero-glow-3 { width: 300px; height: 300px; top: 40%; left: 50%;
      background: radial-gradient(circle, rgba(139,92,246,0.15) 0%, transparent 70%);
      animation: glowFloat3 10s ease-in-out infinite; }
    @keyframes glowFloat1 { 0%,100%{transform:translate(0,0) scale(1)} 33%{transform:translate(-60px,40px) scale(1.2)} 66%{transform:translate(40px,-30px) scale(.85)} }
    @keyframes glowFloat2 { 0%,100%{transform:translate(0,0) scale(1)} 33%{transform:translate(50px,-30px) scale(1.15)} 66%{transform:translate(-30px,20px) scale(.9)} }
    @keyframes glowFloat3 { 0%,100%{transform:translate(0,0) scale(1)} 50%{transform:translate(-30px,-20px) scale(1.3)} }

    .hero-content { position: relative; z-index: 2; max-width: 820px; }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 10px;
      padding: 8px 20px; border-radius: 100px;
      background: rgba(37,99,235,0.12); border: 1px solid rgba(37,99,235,0.3);
      color: #60a5fa; font-size: 0.82rem; font-weight: 500;
      margin-bottom: 32px; letter-spacing: 2px; backdrop-filter: blur(10px);
    }
    .hero-badge::before {
      content: ''; width: 8px; height: 8px; background: #22d3ee; border-radius: 50%;
      animation: badgePulse 2s ease-in-out infinite; box-shadow: 0 0 10px #22d3ee;
    }
    @keyframes badgePulse { 0%,100%{opacity:.4;transform:scale(.8)} 50%{opacity:1;transform:scale(1.2)} }
    .hero h1 {
      font-size: 3.8rem; font-weight: 800; color: #fff; line-height: 1.2;
      margin-bottom: 24px; letter-spacing: 1px;
    }
    .hero h1 span {
      background: linear-gradient(135deg, #38bdf8 0%, #60a5fa 30%, #818cf8 70%, #a78bfa 100%);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
      filter: drop-shadow(0 0 20px rgba(56,189,248,0.4));
    }
    .hero-desc {
      font-size: 1.1rem; color: rgba(255,255,255,0.6); line-height: 1.85;
      margin-bottom: 40px; max-width: 640px; padding-left: 18px;
      border-left: 2px solid rgba(37,99,235,0.4);
    }
    .hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
    .btn {
      display: inline-flex; align-items: center; gap: 8px;
      padding: 14px 36px; font-size: 0.95rem; font-weight: 600;
      border-radius: 8px; transition: all var(--transition); cursor: pointer;
      border: none; letter-spacing: 0.5px;
    }
    .btn-primary {
      background: linear-gradient(135deg, #2563eb, #3b82f6); color: #fff;
      box-shadow: 0 4px 24px rgba(37,99,235,0.35); position: relative; overflow: hidden;
    }
    .btn-primary::before {
      content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
      transition: left 0.6s;
    }
    .btn-primary:hover::before { left: 100%; }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(37,99,235,0.45); }
    .btn-outline {
      background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.2);
      backdrop-filter: blur(10px);
    }
    .btn-outline:hover { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.4); }

    .hero-stats {
      display: flex; gap: 0; margin-top: 64px;
      border: 1px solid rgba(37,99,235,0.12); border-radius: 12px; overflow: hidden;
      backdrop-filter: blur(10px); background: rgba(10,14,26,0.4); width: fit-content;
    }
    .hero-stat { text-align: center; padding: 24px 40px; position: relative; }
    .hero-stat + .hero-stat { border-left: 1px solid rgba(37,99,235,0.1); }
    .hero-stat .num {
      font-size: 2rem; font-weight: 800;
      background: linear-gradient(180deg, #fff 0%, #93c5fd 100%);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
      line-height: 1;
    }
    .hero-stat .label { font-size: 0.78rem; color: rgba(148,163,184,0.6); margin-top: 8px; letter-spacing: 1px; }
    @media (max-width: 768px) {
      .hero h1 { font-size: 2.2rem; }
      .hero-desc { font-size: 1rem; }
      .hero-stats { flex-wrap: wrap; gap: 20px; border: none; background: none; }
      .hero-stat { padding: 0; }
      .hero-stat + .hero-stat { border-left: none; }
      .hero-glow-1, .hero-glow-2, .hero-glow-3 { display: none; }
    }

    /* Tech rings */
    .tech-ring { position: absolute; border-radius: 50%; border: 1px solid rgba(59,130,246,0.12); pointer-events: none; z-index: 0; }
    .tech-ring::after {
      content: ''; position: absolute; top: -1px; left: 50%; width: 6px; height: 6px;
      background: #38bdf8; border-radius: 50%; transform: translateX(-50%);
      box-shadow: 0 0 12px #38bdf8, 0 0 24px rgba(56,189,248,0.5);
    }
    .tech-ring-1 { width: 360px; height: 360px; top: 15%; right: -120px; animation: ringRotate 20s linear infinite; }
    .tech-ring-2 { width: 240px; height: 240px; bottom: 25%; left: -80px; animation: ringRotate 25s linear infinite reverse; border-color: rgba(139,92,246,0.1); }
    .tech-ring-2::after { background: #a78bfa; box-shadow: 0 0 12px #a78bfa, 0 0 24px rgba(167,139,250,0.5); }
    @keyframes ringRotate { from{transform:rotate(0deg)} to{transform:rotate(360deg)} }

    /* ===== Section Common ===== */
    .section { padding: 100px 0; }
    .section-dark { background: var(--dark); color: rgba(255,255,255,0.7); }
    .section-dark .section-title { color: #fff; }
    .section-dark .section-subtitle { color: rgba(255,255,255,0.5); }
    .section-dark .section-tag { color: var(--cyan-light); }
    .section-header { text-align: center; margin-bottom: 64px; }
    .section-tag {
      display: inline-block; font-size: 0.8rem; font-weight: 600;
      color: var(--accent); letter-spacing: 3px; text-transform: uppercase;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2.4rem; font-weight: 800; color: var(--text);
      margin-bottom: 14px; letter-spacing: 0.5px;
    }
    .section-subtitle { font-size: 1rem; color: var(--text-muted); max-width: 580px; margin: 0 auto; }
    @media (max-width: 768px) {
      .section { padding: 64px 0; }
      .section-title { font-size: 1.7rem; }
    }

    /* ===== About / Company Stats ===== */
    .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
    .about-text p { color: rgba(255,255,255,0.6); font-size: 1rem; line-height: 1.9; margin-bottom: 20px; }
    .about-text strong { color: #fff; }
    .about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 32px; }
    .about-feature {
      display: flex; gap: 14px; align-items: flex-start;
      padding: 16px; border-radius: 10px; background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.06); transition: all var(--transition);
    }
    .about-feature:hover { background: rgba(37,99,235,0.08); border-color: rgba(37,99,235,0.2); }
    .about-feature .icon {
      width: 44px; height: 44px; border-radius: 10px; flex-shrink: 0;
      background: linear-gradient(135deg, rgba(37,99,235,0.2), rgba(6,182,212,0.15));
      display: flex; align-items: center; justify-content: center; font-size: 1.2rem;
      border: 1px solid rgba(59,130,246,0.15);
    }
    .about-feature h4 { font-size: 0.92rem; font-weight: 700; color: #fff; margin-bottom: 3px; }
    .about-feature p { font-size: 0.82rem; color: rgba(255,255,255,0.45); margin: 0; line-height: 1.5; }

    .company-stats {
      display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
    }
    .stat-card {
      background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08);
      border-radius: 14px; padding: 28px 24px; transition: all var(--transition);
      position: relative; overflow: hidden;
    }
    .stat-card::before {
      content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
      background: linear-gradient(90deg, #2563eb, #06b6d4);
      transform: scaleX(0); transform-origin: left; transition: transform var(--transition);
    }
    .stat-card:hover { background: rgba(37,99,235,0.06); border-color: rgba(37,99,235,0.2); transform: translateY(-4px); }
    .stat-card:hover::before { transform: scaleX(1); }
    .stat-card .val {
      font-size: 2.2rem; font-weight: 800; line-height: 1;
      background: linear-gradient(135deg, #60a5fa, #22d3ee);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    }
    .stat-card .lbl { font-size: 0.82rem; color: rgba(255,255,255,0.5); margin-top: 8px; }
    @media (max-width: 768px) { .about-grid { grid-template-columns: 1fr; gap: 40px; } }

    /* ===== Capabilities ===== */
    .cap-architecture {
      margin-bottom: 40px; padding: 32px; border-radius: 18px;
      background: linear-gradient(135deg,#091425 0%,#10294b 58%,#0b3550 100%);
      color: #fff; box-shadow: 0 18px 50px rgba(15,35,70,.16); overflow: hidden; position: relative;
    }
    .cap-architecture::after { content:''; position:absolute; width:260px; height:260px; border-radius:50%; right:-90px; top:-120px; background:rgba(34,211,238,.1); }
    .arch-head { display:flex; align-items:flex-end; justify-content:space-between; gap:24px; margin-bottom:24px; position:relative; z-index:1; }
    .arch-head h3 { font-size:1.25rem; margin-bottom:5px; }
    .arch-head p { color:rgba(255,255,255,.55); font-size:.86rem; }
    .arch-badge { color:#67e8f9; font-size:.75rem; padding:6px 11px; border:1px solid rgba(103,232,249,.25); border-radius:999px; white-space:nowrap; }
    .arch-flow { display:grid; grid-template-columns:repeat(4,1fr); gap:12px; position:relative; z-index:1; }
    .arch-layer { padding:17px; background:rgba(255,255,255,.055); border:1px solid rgba(255,255,255,.09); border-radius:12px; position:relative; }
    .arch-layer:not(:last-child)::after { content:'›'; position:absolute; right:-10px; top:50%; transform:translateY(-50%); color:#67e8f9; font-size:1.35rem; z-index:2; }
    .arch-layer .arch-no { font-size:.68rem; letter-spacing:.12em; color:#67e8f9; }
    .arch-layer h4 { font-size:.95rem; margin:5px 0 7px; }
    .arch-layer p { font-size:.74rem; line-height:1.55; color:rgba(255,255,255,.52); }
    .cap-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .cap-card {
      background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06);
      border-radius: 14px; padding: 26px 24px 22px; transition: all var(--transition);
      position: relative; overflow: hidden;
    }
    .cap-card::before {
      content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
      background: linear-gradient(90deg, #2563eb, #06b6d4);
      transform: scaleX(0); transform-origin: left; transition: transform 0.4s;
    }
    .cap-card:hover { background: rgba(37,99,235,0.06); border-color: rgba(37,99,235,0.2); transform: translateY(-4px); }
    .cap-card:hover::before { transform: scaleX(1); }
    .cap-card .cap-num {
      position: absolute; top: 16px; right: 20px; font-size: 2.2rem; font-weight: 800;
      color: rgba(59,130,246,0.08); line-height: 1;
    }
    .cap-card h3 { font-size: 1.02rem; font-weight: 750; color: var(--text); margin-bottom: 8px; padding-right: 36px; }
    .cap-card .cap-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
    .cap-card .cap-tag {
      font-size: 0.68rem; font-weight: 600; color: var(--cyan-light);
      background: rgba(6,182,212,0.1); padding: 3px 8px; border-radius: 4px;
      border: 1px solid rgba(6,182,212,0.15);
    }
    .cap-card p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.65; }
    .cap-demo { position:relative; margin:14px 0 2px; border-radius:10px; overflow:hidden; aspect-ratio:16/8.4; background:#08111f; border:1px solid #e3e8ef; }
    .cap-demo video { width:100%; height:100%; display:block; object-fit:cover; }
    .cap-demo-label { position:absolute; top:9px; left:9px; z-index:2; padding:4px 8px; border-radius:5px; color:#fff; background:rgba(5,15,29,.78); backdrop-filter:blur(6px); font-size:.65rem; font-weight:700; letter-spacing:.03em; pointer-events:none; }
    .cap-demo-note { position:absolute; right:9px; bottom:9px; z-index:2; padding:4px 8px; border-radius:5px; color:rgba(255,255,255,.9); background:rgba(5,15,29,.72); font-size:.62rem; pointer-events:none; }
    .video-logo { position:absolute; top:10px; right:10px; z-index:4; width:48px; height:48px; padding:5px; border-radius:9px; object-fit:contain; background:rgba(255,255,255,.9); box-shadow:0 3px 14px rgba(0,0,0,.25); pointer-events:none; }
    .cap-demo .video-logo { width:42px; height:42px; top:8px; right:8px; }
    .cap-principle { padding:13px 14px; margin-top:13px; border-radius:9px; background:#f7f9fc; border:1px solid #edf1f6; }
    .cap-label { display:block; margin-bottom:4px; font-size:.66rem; font-weight:800; color:var(--accent); letter-spacing:.09em; }
    .cap-pipeline { display:flex; align-items:center; gap:5px; flex-wrap:wrap; margin-top:12px; }
    .cap-pipeline span { font-size:.68rem; color:#475569; background:#eef2f7; padding:4px 7px; border-radius:5px; }
    .cap-pipeline b { color:#38bdf8; font-size:.75rem; }
    .cap-effect { display:grid; grid-template-columns:58px 1fr; gap:12px; align-items:center; margin-top:14px; padding-top:14px; border-top:1px solid var(--border); }
    .effect-viz { height:48px; width:58px; display:flex; align-items:flex-end; gap:4px; padding:4px 5px; border-radius:7px; background:#eff6ff; }
    .effect-viz i { display:block; flex:1; border-radius:2px 2px 0 0; background:#bfdbfe; }
    .effect-viz i:nth-child(1){height:32%}.effect-viz i:nth-child(2){height:52%}.effect-viz i:nth-child(3){height:76%;background:#60a5fa}.effect-viz i:nth-child(4){height:94%;background:#06b6d4}
    .cap-effect strong { display:block; color:var(--text); font-size:.78rem; margin-bottom:2px; }
    .cap-effect p { font-size:.72rem; line-height:1.45; }

    .cap-database {
      margin-top: 48px; background: linear-gradient(135deg, #0d1424 0%, #142440 100%);
      border: 1px solid rgba(37,99,235,0.12); border-radius: 16px;
      padding: 48px 56px; display: flex; align-items: center; justify-content: space-between;
      gap: 40px; flex-wrap: wrap;
    }
    .cap-db-text h3 { font-size: 1.3rem; font-weight: 700; color: #fff; margin-bottom: 10px; }
    .cap-db-text p { color: rgba(255,255,255,0.5); font-size: 0.92rem; line-height: 1.7; max-width: 460px; }
    .cap-db-stats { display: flex; gap: 40px; }
    .cap-db-stat { text-align: center; }
    .cap-db-stat .v {
      font-size: 2.2rem; font-weight: 800;
      background: linear-gradient(135deg, #60a5fa, #22d3ee);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
      line-height: 1;
    }
    .cap-db-stat .l { font-size: 0.78rem; color: rgba(255,255,255,0.4); margin-top: 6px; }
    @media (max-width: 900px) { .arch-flow { grid-template-columns:1fr 1fr; } .arch-layer:nth-child(2)::after { display:none; } }
    @media (max-width: 700px) { .cap-grid,.arch-flow { grid-template-columns:1fr; } .arch-layer::after { display:none; } .cap-architecture{padding:24px 20px}.arch-head{align-items:flex-start;flex-direction:column}.cap-database { padding: 36px 28px; } .cap-db-stats { gap: 24px; flex-wrap:wrap; } }

    /* ===== Product Showcase ===== */
    .product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
    .product-show {
      background: #fff; border-radius: 16px; overflow: hidden;
      border: 1px solid var(--border); transition: all var(--transition);
      display: flex; flex-direction: column;
    }
    .product-show:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
    .product-banner {
      width: 100%; aspect-ratio: 16 / 10; min-height: 180px; position: relative; overflow: hidden;
      display: flex; align-items: center; justify-content: center;
      background: linear-gradient(135deg, #eef3f8, #dfe8f2);
    }
    .product-banner img.poster {
      width: 100%; height: 100%; padding: 10px; display: block;
      object-fit: contain; object-position: center; transition: transform .45s ease;
    }
    .product-show:hover .product-banner img.poster { transform: scale(1.015); }
    .product-banner-model {
      position: absolute; top: 16px; right: 20px; z-index: 1;
      padding: 4px 12px; border-radius: 6px;
      background: rgba(255,255,255,0.15); backdrop-filter: blur(10px);
      color: #000; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.5px;
      max-width: calc(100% - 24px); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    }
    .product-body { padding: 28px 24px; flex: 1; display: flex; flex-direction: column; }
    .product-body h3 { font-size: 1.2rem; font-weight: 700; color: var(--text); margin-bottom: 8px; }
    .product-body .product-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
    .product-body .product-tag {
      font-size: 0.7rem; font-weight: 600; color: var(--accent);
      background: rgba(37,99,235,0.08); padding: 3px 10px; border-radius: 4px;
    }
    .product-body .product-desc { font-size: 0.86rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
    .product-series-label { font-size:.68rem; font-weight:700; color:var(--cyan); letter-spacing:.08em; margin-bottom:5px; }
    .product-advantages { margin-top:15px; padding-top:14px; border-top:1px solid var(--border); }
    .product-advantages strong { display:block; color:var(--accent); font-size:.7rem; letter-spacing:.06em; margin-bottom:6px; }
    .product-advantages li { position:relative; padding-left:12px; color:var(--text-muted); font-size:.75rem; line-height:1.55; margin:3px 0; }
    .product-advantages li::before { content:''; position:absolute; left:0; top:.65em; width:5px; height:5px; border-radius:50%; background:var(--cyan); }
    .product-specs-mini {
      display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
      padding-top: 16px; border-top: 1px solid var(--border);
    }
    .spec-item { font-size: 0.78rem; }
    .spec-item .sk { color: var(--text-light); font-weight: 500; }
    .spec-item .sv { color: var(--text); font-weight: 700; }
    @media (max-width: 1020px) { .product-grid { grid-template-columns: repeat(2,1fr); } }
    @media (max-width: 768px) {
      .product-grid { grid-template-columns: 1fr; gap: 18px; }
      .product-banner { aspect-ratio: 16 / 9; min-height: 0; }
      .product-banner img.poster { padding: 8px; }
    }

    /* ===== Solutions ===== */
    .solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .solution-card {
      background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06);
      border-radius: 14px; padding: 32px 28px; transition: all var(--transition);
      position: relative; overflow: hidden;
    }
    .solution-card::before {
      content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
      background: linear-gradient(90deg, #2563eb, #06b6d4);
      transform: scaleX(0); transform-origin: left; transition: transform 0.4s;
    }
    .solution-card:hover { background: rgba(37,99,235,0.06); border-color: rgba(37,99,235,0.2); transform: translateY(-4px); }
    .solution-card:hover::before { transform: scaleX(1); }
    .sol-icon {
      width: 48px; height: 48px; border-radius: 12px; margin-bottom: 16px;
      background: linear-gradient(135deg, rgba(37,99,235,0.2), rgba(6,182,212,0.15));
      display: flex; align-items: center; justify-content: center; font-size: 1.3rem;
      border: 1px solid rgba(59,130,246,0.15);
    }
    .solution-card h3 { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
    .solution-card .sol-sub { font-size: 0.78rem; color: var(--cyan-light); margin-bottom: 12px; font-weight: 600; }
    .solution-card p { font-size: 0.85rem; color: rgba(255,255,255,0.45); line-height: 1.7; }
    .solution-card .sol-items { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 6px; }
    .sol-item-tag {
      font-size: 0.7rem; color: rgba(255,255,255,0.5); background: rgba(255,255,255,0.05);
      padding: 3px 8px; border-radius: 4px;
    }
    @media (max-width: 900px) { .solution-grid { grid-template-columns: 1fr 1fr; } }
    @media (max-width: 600px) { .solution-grid { grid-template-columns: 1fr; } }

    /* ===== Cases ===== */
    .case-map-panel {
      display: grid; grid-template-columns: minmax(0, 1.75fr) minmax(240px, .65fr);
      gap: 0; margin-bottom: 42px; border-radius: 18px; overflow: hidden;
      background: #071426; border: 1px solid rgba(37,99,235,.18);
      box-shadow: 0 18px 48px rgba(15,35,70,.12);
    }
    .case-map-visual { position: relative; aspect-ratio: 3 / 2; min-width: 0; overflow: hidden; background: #061225; }
    .case-map-visual > img { width: 100%; height: 100%; display: block; object-fit: cover; object-position: center; }
    .case-map-visual::after {
      content: ''; position: absolute; inset: 0; pointer-events: none;
      background: linear-gradient(90deg, transparent 72%, rgba(7,20,38,.72) 100%);
    }
    .case-map-caption {
      position: absolute; left: 18px; bottom: 16px; z-index: 3; padding: 7px 11px;
      color: rgba(255,255,255,.7); background: rgba(4,13,27,.72); border: 1px solid rgba(255,255,255,.12);
      backdrop-filter: blur(8px); border-radius: 7px; font-size: .68rem;
    }
    .case-map-markers { position: absolute; inset: 0; z-index: 4; }
    .map-marker {
      --marker-color: #22d3ee; --marker-glow: rgba(34,211,238,.75);
      position: absolute; left: var(--x); top: var(--y); z-index: 4;
      width: 18px; height: 18px; padding: 0; border: 3px solid #fff; border-radius: 50%;
      background: var(--marker-color); box-shadow: 0 0 0 5px color-mix(in srgb, var(--marker-color) 20%, transparent), 0 0 20px var(--marker-glow);
      transform: translate(-50%,-50%); cursor: pointer; transition: transform .2s ease, box-shadow .2s ease;
    }
    .map-marker.audio { --marker-color: #22d3ee; --marker-glow: rgba(34,211,238,.75); }
    .map-marker.video { --marker-color: #60a5fa; --marker-glow: rgba(96,165,250,.75); }
    .map-marker.mixed { --marker-color: #f97316; --marker-glow: rgba(249,115,22,.78); }
    .map-marker::before {
      content: ''; position: absolute; inset: -10px; border: 1px solid rgba(34,211,238,.55);
      border-radius: 50%; animation: mapPulse 2s ease-out infinite;
    }
    .map-marker:hover, .map-marker:focus-visible, .map-marker.active {
      transform: translate(-50%,-50%) scale(1.22); outline: none;
      box-shadow: 0 0 0 7px color-mix(in srgb, var(--marker-color) 24%, transparent), 0 0 28px var(--marker-glow);
    }
    .map-label {
      position: absolute; left: 22px; top: calc(50% + var(--label-y, 0px)); transform: translateY(-50%); white-space: nowrap;
      padding: 4px 8px; border-radius: 5px; color: #fff; background: rgba(4,13,27,.82);
      border: 1px solid rgba(103,232,249,.25); font-size: .68rem; font-weight: 700; pointer-events: none;
      opacity: 0; visibility: hidden; transition: opacity .18s ease, visibility .18s ease, background .18s ease, border-color .18s ease;
    }
    .map-marker.label-left .map-label { left: auto; right: 22px; }
    .map-marker:hover .map-label, .map-marker:focus-visible .map-label, .map-marker.active .map-label {
      opacity: 1; visibility: visible; background: rgba(4,13,27,.96); border-color: rgba(103,232,249,.65);
    }
    @keyframes mapPulse { 0%{transform:scale(.45);opacity:.9} 80%,100%{transform:scale(1.45);opacity:0} }
    .case-map-summary { padding: 30px 26px; display: flex; flex-direction: column; justify-content: center; color: #fff; }
    .case-map-summary .section-tag { margin-bottom: 8px; }
    .case-map-summary h3 { font-size: 1.28rem; margin-bottom: 8px; }
    .case-map-summary > p { color: rgba(255,255,255,.48); font-size: .82rem; line-height: 1.7; margin-bottom: 18px; }
    .case-map-stats { display: flex; gap: 22px; margin-bottom: 18px; }
    .case-map-stat strong { display: block; color: #67e8f9; font-size: 1.55rem; line-height: 1; }
    .case-map-stat span { color: rgba(255,255,255,.45); font-size: .68rem; }
    .case-location-list { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; max-height: 238px; overflow-y: auto; padding-right: 4px; scrollbar-width: thin; scrollbar-color: rgba(103,232,249,.35) transparent; }
    .case-map-legend { display: flex; flex-wrap: wrap; gap: 10px 14px; margin: 0 0 14px; }
    .case-map-legend span { display: inline-flex; align-items: center; gap: 6px; color: rgba(255,255,255,.58); font-size: .68rem; }
    .case-map-legend i { width: 8px; height: 8px; border-radius: 50%; box-shadow: 0 0 10px currentColor; }
    .case-map-legend .audio { color: #22d3ee; }
    .case-map-legend .video { color: #60a5fa; }
    .case-map-legend .mixed { color: #f97316; }
    .case-map-selection { min-height: 34px; margin: 12px 0 0; color: rgba(255,255,255,.62); font-size: .72rem; line-height: 1.5; }
    .case-location-list button {
      font: inherit; text-align: left; cursor: pointer; color: rgba(255,255,255,.72); font-size: .74rem;
      padding: 8px 9px; border: 1px solid rgba(255,255,255,.08); border-radius: 7px; background: rgba(255,255,255,.04);
      transition: all .2s ease;
    }
    .case-location-list button:hover, .case-location-list button:focus-visible {
      color: #fff; border-color: rgba(34,211,238,.35); background: rgba(34,211,238,.1); outline: none;
    }
    .case-location-list button.active { color: #fff; border-color: rgba(249,115,22,.55); background: rgba(249,115,22,.13); }
    .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .case-card {
      background: #fff; border-radius: 14px; overflow: hidden;
      border: 1px solid var(--border); transition: all var(--transition);
    }
    .case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
    .case-card.map-focus { animation: caseFocus 1.25s ease; }
    @keyframes caseFocus { 0%,100%{box-shadow:var(--shadow)} 35%{box-shadow:0 0 0 4px rgba(34,211,238,.35),0 16px 42px rgba(37,99,235,.2)} }
    .case-banner {
      height: 160px; position: relative; display: flex; align-items: center; justify-content: center;
      overflow: hidden;
    }
    .case-banner-1 { background: linear-gradient(135deg, #0a1628, #1a3a6e); }
    .case-banner-2 { background: linear-gradient(135deg, #0d1b2a, #1d4d5c); }
    .case-banner-3 { background: linear-gradient(135deg, #1a103a, #3b2d6e); }
    .case-banner-4 { background: linear-gradient(135deg, #0a1a0e, #1a4d2e); }
    .case-banner-5 { background: linear-gradient(135deg, #1a1208, #4d3d1a); }
    .case-banner-6 { background: linear-gradient(135deg, #1a0810, #4d1a2e); }
    .case-banner::before {
      content: ''; position: absolute; inset: 0;
      background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
      background-size: 30px 30px;
    }
    .case-banner-emoji { position: relative; z-index: 1; font-size: 3rem; }
    .case-province {
      position: absolute; top: 14px; left: 16px; z-index: 1;
      padding: 4px 12px; border-radius: 6px;
      background: rgba(255,255,255,0.15); backdrop-filter: blur(10px);
      color: #fff; font-size: 0.72rem; font-weight: 600;
    }
    .case-body { padding: 22px 20px; }
    .case-body .case-tag {
      display: inline-block; font-size: 0.7rem; font-weight: 600;
      color: var(--accent); background: rgba(37,99,235,0.08);
      padding: 3px 10px; border-radius: 4px; margin-bottom: 10px;
    }
    .case-body h3 { font-size: 1.02rem; font-weight: 700; color: var(--text); margin-bottom: 8px; }
    .case-body p { font-size: 0.84rem; color: var(--text-muted); line-height: 1.6; }
    @media (max-width: 900px) {
      .case-map-panel { grid-template-columns: 1fr; }
      .case-map-visual::after { background: linear-gradient(0deg, rgba(7,20,38,.5), transparent 25%); }
      .case-map-summary { padding: 25px 24px; }
      .case-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 600px) {
      .case-map-panel { margin-left: -8px; margin-right: -8px; border-radius: 14px; }
      .case-map-visual { aspect-ratio: 1.42 / 1; }
      .map-marker { width: 15px; height: 15px; border-width: 2px; }
      .map-label { display: block; padding: 3px 5px; font-size: .58rem; max-width: 92px; overflow: hidden; text-overflow: ellipsis; }
      .case-map-caption { left: 10px; bottom: 10px; }
      .case-map-summary { padding: 22px 18px; }
      .case-location-list { grid-template-columns: repeat(3,1fr); }
      .case-location-list button { text-align: center; padding: 7px 4px; }
      .case-grid { grid-template-columns: 1fr; }
    }
    @media (prefers-reduced-motion: reduce) {
      .map-marker::before, .case-card.map-focus { animation: none; }
    }

    /* ===== Qualifications ===== */
    .qual-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
    .qual-card {
      background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06);
      border-radius: 14px; padding: 28px 20px; text-align: center; transition: all var(--transition);
    }
    .qual-card:hover { background: rgba(37,99,235,0.06); border-color: rgba(37,99,235,0.2); transform: translateY(-4px); }
    .qual-icon {
      width: 56px; height: 56px; margin: 0 auto 14px;
      border-radius: 50%; display: flex; align-items: center; justify-content: center;
      background: linear-gradient(135deg, rgba(37,99,235,0.15), rgba(6,182,212,0.1));
      border: 1px solid rgba(59,130,246,0.15); font-size: 1.5rem;
    }
    .qual-card h4 { font-size: 0.9rem; font-weight: 700; color: #fff; margin-bottom: 6px; }
    .qual-card p { font-size: 0.78rem; color: rgba(255,255,255,0.4); line-height: 1.5; }
    @media (max-width: 900px) { .qual-grid { grid-template-columns: 1fr 1fr; } }
    @media (max-width: 500px) { .qual-grid { grid-template-columns: 1fr; } }

    /* ===== Contact ===== */
    .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
    .contact-info h3 { font-size: 1.5rem; font-weight: 700; color: var(--text); margin-bottom: 14px; }
    .contact-info > p { color: var(--text-muted); margin-bottom: 32px; line-height: 1.8; }
    .contact-item { display: flex; gap: 16px; margin-bottom: 24px; align-items: flex-start; }
    .contact-item .ci-icon {
      width: 44px; height: 44px; border-radius: 10px; flex-shrink: 0;
      background: linear-gradient(135deg, rgba(37,99,235,0.1), rgba(6,182,212,0.08));
      display: flex; align-items: center; justify-content: center; font-size: 1.1rem;
      border: 1px solid rgba(37,99,235,0.1);
    }
    .contact-item h4 { font-size: 0.88rem; font-weight: 700; color: var(--text); margin-bottom: 3px; }
    .contact-item p { font-size: 0.9rem; color: var(--text-muted); }
    .contact-form {
      background: #fff; padding: 36px; border-radius: 16px;
      border: 1px solid var(--border); box-shadow: var(--shadow);
    }
    .form-group { margin-bottom: 18px; }
    .form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--text); margin-bottom: 8px; }
    .form-group input, .form-group textarea {
      width: 100%; padding: 14px 16px; border: 1.5px solid var(--border);
      border-radius: 10px; font-size: 0.92rem; font-family: inherit; color: var(--text);
      transition: border-color var(--transition); background: var(--bg-alt); outline: none;
    }
    .form-group input:focus, .form-group textarea:focus { border-color: var(--accent); background: #fff; }
    .form-group textarea { resize: vertical; min-height: 120px; }
    @media (max-width: 768px) { .contact-grid { grid-template-columns: 1fr; gap: 40px; } }

    /* ===== Footer ===== */
    .footer { background: #050810; color: rgba(255,255,255,0.6); padding: 56px 0 28px; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
    .footer-brand h3 { font-size: 1.1rem; font-weight: 700; color: #fff; margin-bottom: 12px; }
    .footer-brand p { font-size: 0.85rem; line-height: 1.7; }
    .footer-col h4 { font-size: 0.85rem; font-weight: 700; color: #fff; margin-bottom: 14px; }
    .footer-col a { display: block; font-size: 0.82rem; color: rgba(255,255,255,0.45); margin-bottom: 10px; transition: color var(--transition); }
    .footer-col a:hover { color: #fff; }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.06); padding-top: 24px;
      display: flex; justify-content: space-between; align-items: center;
      font-size: 0.8rem; color: rgba(255,255,255,0.35);
    }
    @media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
    @media (max-width: 500px) { .footer-grid { grid-template-columns: 1fr; } }

    /* ===== Back to Top ===== */
    .back-top {
      position: fixed; bottom: 32px; right: 32px;
      width: 44px; height: 44px; border-radius: 10px;
      background: linear-gradient(135deg, #2563eb, #3b82f6); color: #fff;
      display: flex; align-items: center; justify-content: center;
      cursor: pointer; border: none; font-size: 1.2rem;
      box-shadow: 0 4px 16px rgba(37,99,235,0.35);
      opacity: 0; transform: translateY(20px); transition: all var(--transition); z-index: 999;
    }
    .back-top.visible { opacity: 1; transform: translateY(0); }
    .back-top:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(37,99,235,0.45); }

    /* ===== Animations ===== */
    .fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.7s ease, transform 0.7s ease; }
    .fade-up.visible { opacity: 1; transform: translateY(0); }

    .overlay {
      position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 999;
      opacity: 0; pointer-events: none; transition: opacity var(--transition);
    }
    .overlay.active { opacity: 1; pointer-events: auto; }

    /* ===== Detail Modal ===== */
    .modal-overlay {
      position: fixed; inset: 0; z-index: 2000;
      background: rgba(0,0,0,0.6); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
      opacity: 0; pointer-events: none; transition: opacity 0.3s ease;
      display: flex; align-items: flex-start; justify-content: center;
      padding: 40px 20px; overflow-y: auto;
    }
    .modal-overlay.active { opacity: 1; pointer-events: auto; }
    .modal-box {
      background: #fff; border-radius: 16px; max-width: 860px; width: 100%;
      transform: translateY(30px) scale(0.97); transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
      overflow: hidden; box-shadow: 0 24px 80px rgba(0,0,0,0.2); margin: auto;
    }
    .modal-overlay.active .modal-box { transform: translateY(0) scale(1); }
    .modal-header {
      position: relative; height: 200px; display: flex; align-items: center; justify-content: center;
      overflow: hidden;
    }
    .modal-header::before {
      content: ''; position: absolute; inset: 0;
      background-image:
        linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
      background-size: 40px 40px;
    }
    .modal-header::after {
      content: ''; position: absolute; bottom: -50%; left: 50%; transform: translateX(-50%);
      width: 300px; height: 300px; background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
      border-radius: 50%;
    }
    .modal-header-icon { position: relative; z-index: 1; font-size: 4rem; filter: drop-shadow(0 4px 20px rgba(0,0,0,0.3)); }
    .modal-header-model {
      position: absolute; top: 16px; right: 20px; z-index: 1;
      padding: 4px 12px; border-radius: 6px;
      background: rgba(255,255,255,0.15); backdrop-filter: blur(10px);
      color: #fff; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.5px;
    }
    .modal-close {
      position: absolute; top: 16px; left: 20px; z-index: 2;
      width: 36px; height: 36px; border-radius: 50%; border: none;
      background: rgba(255,255,255,0.15); backdrop-filter: blur(10px);
      color: #fff; font-size: 1.1rem; cursor: pointer; transition: all 0.2s;
      display: flex; align-items: center; justify-content: center;
    }
    .modal-close:hover { background: rgba(255,255,255,0.3); transform: rotate(90deg); }
    .modal-body { padding: 40px; max-height: calc(100vh - 280px); overflow-y: auto; }
    .modal-body h2 { font-size: 1.6rem; font-weight: 800; color: var(--text); margin-bottom: 8px; }
    .modal-body .modal-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 24px; }
    .modal-body .modal-tag {
      font-size: 0.72rem; font-weight: 600; color: var(--accent);
      background: rgba(37,99,235,0.08); padding: 4px 12px; border-radius: 4px;
    }
    .modal-body h3 { font-size: 1.1rem; font-weight: 700; color: var(--text); margin: 28px 0 14px; display: flex; align-items: center; gap: 8px; }
    .modal-body h3::before { content: ''; width: 4px; height: 18px; background: linear-gradient(180deg, #2563eb, #06b6d4); border-radius: 2px; }
    .modal-body p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.85; margin-bottom: 12px; }
    .modal-body ul { margin: 8px 0 16px 4px; }
    .modal-body ul li { font-size: 0.9rem; color: var(--text-muted); line-height: 2; padding-left: 20px; position: relative; }
    .modal-body ul li::before { content: '▸'; position: absolute; left: 0; color: var(--accent); font-size: 0.85rem; }

    /* Spec table in modal */
    .spec-table { width: 100%; border-collapse: collapse; margin: 12px 0 8px; }
    .spec-table th { background: var(--bg-alt); padding: 12px 16px; font-size: 0.82rem; font-weight: 700; color: var(--text); text-align: left; border-bottom: 2px solid var(--border); }
    .spec-table td { padding: 11px 16px; font-size: 0.86rem; color: var(--text-muted); border-bottom: 1px solid var(--border); }
    .spec-table tr:hover td { background: var(--bg-alt); }
    .spec-table .spec-key { font-weight: 600; color: var(--text); width: 30%; }

    /* Effect stats in modal */
    .effect-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 16px 0; }
    .effect-card { background: var(--bg-alt); border: 1px solid var(--border); border-radius: 12px; padding: 20px 16px; text-align: center; }
    .effect-card .ev { font-size: 1.6rem; font-weight: 800; background: linear-gradient(135deg, #2563eb, #06b6d4); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; }
    .effect-card .el { font-size: 0.78rem; color: var(--text-muted); margin-top: 6px; }
    @media (max-width: 600px) { .effect-grid { grid-template-columns: 1fr; } .modal-body { padding: 28px 20px; } .modal-body h2 { font-size: 1.3rem; } }

    /* ===== Video ===== */
    .video-banner {
      position: relative; height: 220px; overflow: hidden; background: #000;
    }
    .case-card .video-banner {
      width: 100%; height: auto; aspect-ratio: 16 / 9;
      background: #07111f; display: flex; align-items: center; justify-content: center;
    }
    .video-banner img.poster {
      width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s;
    }
    .video-banner:hover img.poster { transform: scale(1.08); }
    .case-card .video-banner img.poster {
      width: 100%; height: 100%; padding: 0; object-fit: contain; object-position: center;
      background: #07111f; transition: transform .45s ease;
    }
    .case-card:hover .video-banner img.poster { transform: scale(1.01); }
    .video-banner .product-banner-model { top:auto; right:12px; bottom:12px; }
    .video-badge {
      position: absolute; top: 12px; right: 72px; z-index: 2;
      padding: 4px 10px; background: rgba(0,0,0,0.55);
      backdrop-filter: blur(4px); color: #fff;
      font-size: 0.68rem; font-weight: 600; border-radius: 4px;
      display: flex; align-items: center; gap: 4px;
    }
    .modal-header-video {
      position: absolute; inset: 0; width: 100%; height: 100%;
      object-fit: cover; z-index: 0;
    }
    .product-detail-modal .modal-box {
      max-height: calc(100vh - 48px); max-height: calc(100dvh - 48px);
      display: flex; flex-direction: column;
    }
    .product-detail-modal .product-detail-media {
      width: 100%; height: auto; aspect-ratio: 16 / 9; min-height: 260px; max-height: min(52vh, 484px);
      flex: 0 0 auto; background: #07111f;
    }
    .product-detail-modal .product-detail-media::before,
    .product-detail-modal .product-detail-media::after { display: none; }
    .product-detail-modal .product-detail-media .modal-header-video {
      object-fit: contain; object-position: center; background: #07111f;
    }
    .product-detail-modal .modal-body {
      max-height: none; min-height: 0; flex: 1 1 auto; overflow-y: auto;
    }
    .modal-overlay[id^="modal-case-"] .modal-box {
      max-height: calc(100vh - 48px); max-height: calc(100dvh - 48px);
      display: flex; flex-direction: column;
    }
    .modal-overlay[id^="modal-case-"] .modal-header.has-video {
      width: 100%; height: auto; min-height: 260px; max-height: min(52vh, 484px);
      aspect-ratio: 16 / 9; flex: 0 0 auto; background: #07111f;
    }
    .modal-overlay[id^="modal-case-"] .modal-header.has-video::before,
    .modal-overlay[id^="modal-case-"] .modal-header.has-video::after { display: none; }
    .modal-overlay[id^="modal-case-"] .modal-header.has-video .modal-header-video {
      object-fit: contain; object-position: center; background: #07111f;
    }
    .modal-overlay[id^="modal-case-"] .modal-body {
      max-height: none; min-height: 0; flex: 1 1 auto; overflow-y: auto;
    }
    .modal-header { position: relative; }
    .modal-header::before, .modal-header::after { z-index: 1; }
    .modal-header .modal-close, .modal-header .modal-header-model, .modal-header .modal-header-icon { z-index: 2; }
    .modal-header.has-video .modal-header-model { top:auto; right:16px; bottom:16px; }
    .modal-header .video-logo { top:14px; right:16px; width:52px; height:52px; }
    .case-video-shell .modal-close { top:14px; left:14px; right:auto; z-index:6; }
    .case-video-shell .modal-header-model { top:16px; left:66px; right:auto; bottom:auto; z-index:5; max-width:calc(100% - 150px); }
    .case-video-arrow {
      position:absolute; top:50%; z-index:5; width:46px; height:68px; padding:0; border:1px solid rgba(255,255,255,.2);
      border-radius:10px; transform:translateY(-50%); cursor:pointer; color:#fff; background:rgba(3,10,22,.48);
      backdrop-filter:blur(8px); font-size:2rem; line-height:1; transition:background .2s ease, transform .2s ease;
    }
    .case-video-arrow:hover, .case-video-arrow:focus-visible { background:rgba(3,10,22,.76); transform:translateY(-50%) scale(1.05); outline:2px solid rgba(103,232,249,.65); }
    .case-video-arrow.prev { left:16px; }
    .case-video-arrow.next { right:16px; }
    .case-video-arrow[hidden] { display:none; }
    .case-video-meta {
      position:absolute; left:50%; bottom:46px; z-index:5; max-width:calc(100% - 180px); transform:translateX(-50%);
      display:flex; align-items:center; gap:8px; padding:6px 10px; border-radius:7px; color:#fff; background:rgba(3,10,22,.62);
      backdrop-filter:blur(8px); font-size:.72rem; pointer-events:none;
    }
    .case-video-count { color:#67e8f9; font-weight:700; white-space:nowrap; }
    @media (max-width: 768px) {
      .modal-overlay { padding: 18px 12px; }
      .product-detail-modal .modal-box {
        max-height: calc(100vh - 36px); max-height: calc(100dvh - 36px); border-radius: 13px;
      }
      .product-detail-modal .product-detail-media { min-height: 0; max-height: 44vh; aspect-ratio: 16 / 9; }
      .product-detail-modal .modal-body { padding: 28px 22px; }
      .modal-overlay[id^="modal-case-"] .modal-box {
        max-height: calc(100vh - 36px); max-height: calc(100dvh - 36px); border-radius: 13px;
      }
      .modal-overlay[id^="modal-case-"] .modal-header.has-video {
        min-height: 0; max-height: 44vh; aspect-ratio: 16 / 9;
      }
      .modal-overlay[id^="modal-case-"] .modal-body { padding: 28px 22px; }
    }
    @media (max-width:600px) {
      .video-logo{width:40px;height:40px}.video-badge{right:60px}.modal-header .video-logo{width:44px;height:44px}
      .product-detail-modal .product-detail-media { max-height: 38vh; }
      .product-detail-modal .modal-header-model { left: 12px; right: auto; bottom: 10px; max-width: calc(100% - 24px); }
      .product-detail-modal .modal-close { top: 10px; left: 10px; }
      .product-detail-modal .modal-header .video-logo { top: 10px; right: 10px; width: 40px; height: 40px; }
      .modal-overlay[id^="modal-case-"] .modal-header.has-video { max-height: 38vh; }
      .modal-overlay[id^="modal-case-"] .modal-header.has-video .modal-header-model {
        left: 12px; right: auto; bottom: 10px;
      }
      .modal-overlay[id^="modal-case-"] .modal-header.has-video .modal-close { top: 10px; left: 10px; }
      .modal-overlay[id^="modal-case-"] .modal-header.has-video .video-logo {
        top: 10px; right: 10px; width: 40px; height: 40px;
      }
      .case-video-shell .modal-close { top:10px; left:10px; }
      .case-video-shell .modal-header-model { top:11px; left:58px; right:auto; bottom:auto; max-width:calc(100% - 112px); }
      .case-video-arrow { width:38px; height:56px; font-size:1.6rem; }
      .case-video-arrow.prev { left:8px; }
      .case-video-arrow.next { right:8px; }
      .case-video-meta { bottom:42px; max-width:calc(100% - 110px); font-size:.65rem; }
    }
    @media (max-height: 650px) and (orientation: landscape) {
      .product-detail-modal .product-detail-media { max-height: 42vh; }
      .product-detail-modal .modal-body { padding-top: 22px; padding-bottom: 22px; }
      .modal-overlay[id^="modal-case-"] .modal-header.has-video { max-height: 42vh; }
      .modal-overlay[id^="modal-case-"] .modal-body { padding-top: 22px; padding-bottom: 22px; }
    }

    /* Clickable card indicator */
    .product-show, .case-card { cursor: pointer; }
    .product-show .product-body::after, .case-card .case-body::after {
      content: '查看详情 →'; display: block; margin-top: 14px; font-size: 0.82rem; font-weight: 600;
      color: var(--accent); transition: gap 0.3s;
    }
    .product-show:hover .product-body::after, .case-card:hover .case-body::after { letter-spacing: 1px; }

    /* Form status */
    .form-status { padding: 14px 16px; border-radius: 10px; font-size: 0.88rem; margin-top: 12px; display: none; }
    .form-status.success { display: block; background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46; }
    .form-status.error { display: block; background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
    .form-status.loading { display: block; background: #eff6ff; border: 1px solid #bfdbfe; color: #1e40af; }
    .btn-loading { opacity: 0.7; pointer-events: none; }