/* ========================================
       CSS Variables - Brand + Text Readability
    ======================================== */
    :root {
      --font-sans: "HarmonyOS Sans", "MiSans", "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
      --brand-bg: #f6f8fb;
      --brand-ink: #0f172a;
      --brand-ink-weak: #475569;
      --brand-accent: #0ea5e9;
      --brand-accent-2: #14b8a6;
      --brand-accent-3: #38bdf8;
      --brand-line: rgba(15, 23, 42, 0.08);
      --brand-surface: rgba(255, 255, 255, 0.96);
      --brand-surface-muted: rgba(248, 250, 252, 0.9);
      --brand-glow: rgba(14, 165, 233, 0.35);
      --radius-xl: 24px;
      --radius-lg: 18px;
      --radius-md: 12px;
      --shadow-card: 0 16px 36px rgba(15, 23, 42, 0.12);
      --shadow-hover: 0 28px 70px rgba(15, 23, 42, 0.18);
      --text-strong: #0f172a;
      --text-body: #334155;
      --text-muted: #64748b;
    }

    /* ========================================
       Typography
    ======================================== */
    body,
    button,
    input,
    select,
    textarea {
      font-family: var(--font-sans);
    }

    body {
      background:
        radial-gradient(1200px 800px at 12% -8%, rgba(14, 165, 233, 0.12), transparent 60%),
        radial-gradient(1000px 700px at 92% 0%, rgba(20, 184, 166, 0.12), transparent 55%),
        var(--brand-bg);
      color: var(--text-body);
      font-size: 16px;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }
    p { line-height: 1.75; }

    h1, h2, h3, h4, h5, h6, .section-title h2 {
      font-family: var(--font-sans);
      letter-spacing: -0.02em;
      color: var(--text-strong);
    }

    h1 { font-size: 48px; font-weight: 700; line-height: 1.2; }
    h2 { font-size: 32px; font-weight: 700; line-height: 1.3; }
    h3 { font-size: 26px; font-weight: 600; line-height: 1.4; }
    h4 { font-size: 20px; font-weight: 600; line-height: 1.4; }

    /* 链接样式 - 悬停下划线效果 */
    a {
      color: var(--brand-accent);
      text-decoration: underline;
      text-decoration-thickness: 1px;
      text-underline-offset: 3px;
      text-decoration-color: transparent;
      transition: text-decoration-color 0.2s ease, color 0.2s ease;
    }
    a:hover {
      color: var(--brand-accent-3);
      text-decoration-color: var(--brand-accent);
    }
    /* 导航链接不显示下划线 */
    .navbar a, .nav-link {
      text-decoration: none !important;
    }
    /* 按钮不显示下划线 */
    .btn, button, .btn-get-started, .btn-watch-video, .cta-btn {
      text-decoration: none !important;
    }

    .btn-get-started {
      font-family: var(--font-sans);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 32px;
      border-radius: 999px;
      border: none;
      color: #ffffff;
      background: linear-gradient(135deg, var(--brand-accent-3), var(--brand-accent-2));
      box-shadow: 0 10px 22px rgba(56, 189, 248, 0.35);
      transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
    }
    .btn-get-started:hover {
      color: #ffffff;
      transform: translateY(-2px);
      box-shadow: 0 18px 36px rgba(20, 184, 166, 0.45);
      filter: brightness(1.05);
    }
    .btn-get-started:focus-visible {
      outline: 2px solid rgba(56, 189, 248, 0.5);
      outline-offset: 3px;
    }

    /* ========================================
       A. First Screen Layout (Hero + Stats = 100vh)
    ======================================== */
    .first-screen {
      height: 100vh;
      display: flex;
      flex-direction: column;
    }
    #hero {
      flex: 1 !important;
      height: auto !important;
      min-height: 0 !important;
    }
    /* ========================================
       B. Stats Section
    ======================================== */
    .stats-section {
      flex-shrink: 0;
      background: linear-gradient(135deg, #0b1220 0%, #0b2a4a 55%, #0f5da8 100%);
      padding: clamp(20px, 3vh, 60px) 0;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
    }
    .stats-section::before {
      content: '';
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%2338bdf8" fill-opacity="0.06" d="M0,96L48,112C96,128,192,160,288,165.3C384,171,480,149,576,133.3C672,117,768,107,864,122.7C960,139,1056,181,1152,181.3C1248,181,1344,139,1392,117.3L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
      background-size: cover;
    }
    .stat-item {
      text-align: center;
      padding: clamp(16px, 2.5vh, 40px) clamp(12px, 2vw, 30px);
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(15px);
      border-radius: var(--radius-xl);
      border: 1px solid rgba(148, 163, 184, 0.2);
      transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
      box-shadow: 0 20px 50px rgba(2, 6, 23, 0.3);
    }
    .stat-item.stat-blue,
    .stat-item.stat-purple,
    .stat-item.stat-green,
    .stat-item.stat-orange {
      background: linear-gradient(135deg, rgba(14, 53, 125, 0.1), rgba(26, 84, 144, 0.15));
      border-color: rgba(96, 165, 250, 0.3);
      box-shadow: 0 10px 30px rgba(14, 53, 125, 0.2);
    }
    .stat-item::before {
      content: '';
      position: absolute;
      top: -2px; left: -2px; right: -2px; bottom: -2px;
      background: linear-gradient(45deg, #0e357d, #1a5490, #2a6bb0);
      border-radius: inherit;
      z-index: -1;
      opacity: 0;
      transition: opacity 0.3s;
    }
    .stat-item:hover::before { opacity: 1; }
    .stat-item:hover {
      transform: translateY(-10px) scale(1.02);
      box-shadow: 0 20px 40px rgba(14, 53, 125, 0.4);
      border-color: rgba(96, 165, 250, 0.6);
    }
    .stat-number {
      font-size: clamp(2rem, 4vw, 4.5rem);
      font-weight: 800;
      margin-bottom: clamp(6px, 1vh, 15px);
      line-height: 1;
      letter-spacing: -1px;
      position: relative;
      color: #ffffff;
      text-shadow: 0 0 20px rgba(96, 165, 250, 0.4);
      /* 数字等宽优化 */
      font-feature-settings: "tnum";
      font-variant-numeric: tabular-nums;
    }
    @keyframes numberPulse {
      0%, 100% { filter: brightness(1); transform: scale(1); }
      50% { filter: brightness(1.2); transform: scale(1.05); }
    }
    .stat-label {
      font-size: clamp(0.7rem, 1.2vw, 0.9rem);
      color: #cbd5e1;
      font-weight: 600;
      margin-top: clamp(6px, 1vh, 15px);
      letter-spacing: 0.02em;
      text-transform: none;
    }
    .stat-icon {
      font-size: clamp(2rem, 3vw, 3.5rem);
      margin-bottom: clamp(8px, 1.5vh, 20px);
      color: #60a5fa;
      filter: drop-shadow(0 0 15px rgba(96, 165, 250, 0.4));
    }
    @keyframes iconFloat {
      0%, 100% { transform: translateY(0px); }
      50% { transform: translateY(-10px); }
    }

    /* ========================================
       B. Comparison Table
    ======================================== */
    .comparison-section {
      background: linear-gradient(135deg, var(--brand-surface-muted) 0%, #eef2f7 100%);
      padding: 80px 0;
      position: relative;
    }
    .comparison-section .section-title .comparison-title-line {
      margin-top: 14px;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 14px;
    }
    .comparison-section .comparison-side {
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 8px 16px;
      min-height: 52px;
      border-radius: 999px;
      font-size: clamp(14px, 1.1vw, 17px);
      font-weight: 700;
      line-height: 1;
      letter-spacing: 0.01em;
      color: #ffffff;
      white-space: nowrap;
    }
    .comparison-section .comparison-side-traditional { }
    .comparison-section .comparison-side-traditional {
      background: linear-gradient(135deg, #7f1d1d 0%, #b91c1c 100%);
      box-shadow: 0 8px 18px rgba(127, 29, 29, 0.24);
    }
    .comparison-section .comparison-side-zizen { }
    .comparison-section .comparison-side-zizen {
      background: linear-gradient(135deg, #0f5da8 0%, #0ea5e9 55%, #14b8a6 100%);
      box-shadow: 0 10px 22px rgba(14, 165, 233, 0.24);
    }
    .comparison-section .comparison-vs-text {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 54px;
      height: 54px;
      border-radius: 999px;
      font-size: 16px;
      font-weight: 900;
      line-height: 1;
      letter-spacing: 0.06em;
      color: #ffffff;
      background: linear-gradient(135deg, #ef4444 0%, #f97316 55%, #fb923c 100%);
      border: 2px solid rgba(255, 255, 255, 0.9);
      box-shadow: 0 10px 20px rgba(239, 68, 68, 0.24);
      justify-self: center;
    }
    @keyframes vsPulse {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-2px) scale(1.04); }
    }
    .comparison-wrap {
      position: relative;
      padding-top: 12px;
    }
    .comparison-table {
      width: 100%;
      background: white;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      border: 1px solid rgba(15, 23, 42, 0.06);
    }
    .comparison-table th,
    .comparison-table td {
      padding: 20px;
      text-align: center;
      border-bottom: 1px solid #e1e8ed;
      line-height: 1.6;
    }
    .comparison-table th {
      background: linear-gradient(135deg, #0b1220 0%, #0f5da8 100%);
      color: white;
      font-weight: 600;
      font-size: 1.1rem;
    }
    .comparison-table th.vs-head-base {
      background: linear-gradient(135deg, #111827 0%, #334155 100%);
      color: #e5e7eb;
    }
    .comparison-table th.vs-head-traditional {
      background: linear-gradient(135deg, #7f1d1d 0%, #991b1b 100%);
      color: #fee2e2;
    }
    .comparison-table th.highlight {
      background: linear-gradient(135deg, #0f5da8 0%, #1a5490 100%);
      position: relative;
    }
    .comparison-table th.vs-head-zizen {
      background: linear-gradient(135deg, #0f5da8 0%, #0ea5e9 55%, #14b8a6 100%);
      color: #ecfeff;
    }
    .recommend-badge {
      display: inline-block;
      background: #ffd700;
      color: #333;
      padding: 3px 10px;
      border-radius: 12px;
      font-size: 0.7rem;
      font-weight: 700;
      margin-left: 8px;
      white-space: nowrap;
      box-shadow: 0 2px 8px rgba(255, 215, 0, 0.4);
    }
    .comparison-table td {
      font-size: 1rem;
      color: var(--text-body);
    }
    .comparison-table td.cell-traditional {
      background: rgba(239, 68, 68, 0.06);
      color: #7f1d1d;
      border-left: 3px solid rgba(239, 68, 68, 0.32);
      box-shadow: inset 0 0 0 1px rgba(239, 68, 68, 0.12);
    }
    .comparison-table td.cell-zizen {
      background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(20, 184, 166, 0.12));
      color: #0f3f4c;
      font-weight: 600;
      border-left: 3px solid rgba(20, 184, 166, 0.55);
      box-shadow: inset 0 0 0 1px rgba(14, 165, 233, 0.18);
    }
    .comparison-table tbody tr:nth-child(even) { background: rgba(248, 250, 252, 0.6); }
    .comparison-table tr:hover { background: rgba(226, 232, 240, 0.6); }
    .comparison-table .icon-check {
      color: #059669;
      font-size: 1.45rem;
      font-weight: 800;
      margin-right: 2px;
    }
    .comparison-table .icon-cross { color: #dc3545; font-size: 1.5rem; }

    /* ========================================
       C. Products Section
    ======================================== */
    .products {
      padding: 80px 0;
      background: #f7f9fc;
    }

    /* Product cards */
    .product-card {
      background: var(--brand-surface);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(148, 163, 184, 0.2);
      box-shadow: var(--shadow-card);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      position: relative;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .product-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .product-img {
      position: relative;
      overflow: hidden;
      height: 240px;
    }
    .product-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s;
    }
    .product-card:hover .product-img img {
      transform: scale(1.15);
    }
    .product-info {
      padding: 25px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .product-info h4 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-strong);
    }
    .product-info h4 a {
      color: var(--text-strong);
      transition: color 0.3s;
    }
    .product-info h4 a:hover {
      color: var(--brand-accent);
    }
    .product-specs {
      display: flex;
      gap: 8px;
      margin-bottom: 6px;
      flex-wrap: wrap;
    }
    .spec-badge {
      background: linear-gradient(135deg, var(--brand-accent-3), var(--brand-accent-2));
      color: white;
      padding: 4px 12px;
      border-radius: 15px;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.5px;
    }
    .product-info p {
      color: var(--brand-ink-weak);
      font-size: 0.9rem;
      line-height: 1.75;
      display: -webkit-box;
      -webkit-line-clamp: 4;
      -webkit-box-orient: vertical;
      overflow: hidden;
      flex-grow: 1;
    }

    /* ========================================
       C2. Product Matrix
    ======================================== */
    .product-matrix {
      padding: 84px 0;
      background:
        radial-gradient(1000px 600px at 10% -20%, rgba(56, 189, 248, 0.1), transparent 60%),
        radial-gradient(900px 540px at 92% 120%, rgba(20, 184, 166, 0.12), transparent 60%),
        #f7f9fc;
    }
    .matrix-card {
      height: 100%;
      background: rgba(255, 255, 255, 0.96);
      border: 1px solid rgba(15, 23, 42, 0.08);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      padding: 24px;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .matrix-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .matrix-cover {
      position: relative;
      border-radius: 14px;
      overflow: hidden;
      aspect-ratio: 16 / 9;
      background: #dbeafe;
      margin-bottom: 14px;
    }
    .matrix-cover::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(2, 6, 23, 0) 55%, rgba(2, 6, 23, 0.14) 100%);
      pointer-events: none;
    }
    .matrix-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center;
      display: block;
      transition: transform 0.35s ease;
      transform: scale(0.9);
    }
    .matrix-card:hover .matrix-cover img {
      transform: scale(1.04);
    }
    .matrix-card--chart .matrix-cover {
      background: #f8fafc;
    }
    .matrix-card--chart .matrix-cover img {
      object-fit: contain;
      background: #f8fafc;
      padding: 6px;
    }
    .matrix-card--chart:hover .matrix-cover img {
      transform: scale(1.02);
    }
    .matrix-head {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .matrix-no {
      width: 34px;
      height: 34px;
      border-radius: 10px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
      font-weight: 800;
      color: #ffffff;
      background: linear-gradient(135deg, var(--brand-accent-3), var(--brand-accent-2));
      box-shadow: 0 8px 16px rgba(56, 189, 248, 0.24);
      flex-shrink: 0;
    }
    .matrix-head h3 {
      margin: 0;
      font-size: 19px;
      color: var(--text-strong);
    }
    .matrix-card p {
      margin-bottom: 12px;
      color: var(--text-body);
      font-size: 15px;
      line-height: 1.75;
    }
    .matrix-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 12px;
    }
    .matrix-tags span {
      display: inline-flex;
      align-items: center;
      padding: 4px 10px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 700;
      color: #075985;
      background: rgba(14, 165, 233, 0.12);
      border: 1px solid rgba(14, 165, 233, 0.25);
    }
    .matrix-card ul {
      margin: 0;
      padding-left: 18px;
      color: var(--text-body);
    }
    .matrix-card ul li + li { margin-top: 6px; }

    /* ========================================
       C3. Solution Architecture
    ======================================== */
    .solution-architecture .solution-card {
      height: 100%;
      background: rgba(255, 255, 255, 0.96);
      border: 1px solid rgba(15, 23, 42, 0.08);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .solution-architecture .section-title p {
      max-width: 760px;
      margin: 0 auto;
    }
    .solution-architecture .solution-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .solution-architecture .solution-thumb {
      position: relative;
      aspect-ratio: 16 / 9;
      background: #e2e8f0;
      overflow: hidden;
    }
    .solution-architecture .solution-thumb::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(2, 6, 23, 0) 60%, rgba(2, 6, 23, 0.12) 100%);
      pointer-events: none;
    }
    .solution-architecture .solution-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center;
      display: block;
    }
    .solution-architecture .solution-body {
      padding: 22px;
    }
    .solution-architecture .solution-body h3 {
      margin: 0 0 10px;
      font-size: 22px;
      color: var(--text-strong);
    }
    .solution-architecture .solution-body p {
      color: var(--text-body);
      margin-bottom: 12px;
    }
    .solution-points {
      margin: 0;
      padding-left: 18px;
    }
    .solution-points li {
      color: var(--text-body);
      line-height: 1.7;
    }
    .solution-points li + li { margin-top: 6px; }

    /* ========================================
       C4. Methodology
    ======================================== */
    .methodology {
      padding: 84px 0;
      background:
        radial-gradient(860px 520px at 8% -22%, rgba(20, 184, 166, 0.08), transparent 62%),
        radial-gradient(920px 560px at 96% 118%, rgba(56, 189, 248, 0.1), transparent 62%),
        #ffffff;
    }
    .methodology .section-title p {
      max-width: 800px;
      margin: 0 auto;
    }
    .methodology-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }
    .method-card {
      border: 1px solid rgba(14, 95, 168, 0.2);
      border-radius: 14px;
      background: linear-gradient(180deg, rgba(240, 249, 255, 0.82), rgba(255, 255, 255, 0.98));
      box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
      padding: 18px 18px;
      min-height: 184px;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      position: relative;
      overflow: hidden;
    }
    .method-card::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, #0f5da8, #38bdf8);
      opacity: 0.7;
    }
    .method-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 16px 26px rgba(15, 23, 42, 0.12);
    }
    .method-no {
      display: inline-flex;
      width: 30px;
      height: 30px;
      border-radius: 9px;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      font-weight: 800;
      color: #ffffff;
      background: linear-gradient(135deg, var(--brand-accent-3), var(--brand-accent-2));
      margin-bottom: 8px;
    }
    .method-card h3 {
      margin: 0 0 8px;
      font-size: 22px;
      letter-spacing: 0.02em;
      color: #0f3f75;
    }
    .method-card p {
      margin: 0;
      line-height: 1.74;
      font-size: 15px;
      color: #1f3b57;
    }
    /* ========================================
       D. Header
    ======================================== */
    #header {
      background: rgba(6, 12, 22, 0.94);
      border-bottom: 1px solid rgba(148, 163, 184, 0.16);
      box-shadow: 0 12px 30px rgba(2, 6, 23, 0.22);
      padding: 10px 0;
    }
    #header .container {
      justify-content: space-between !important;
      max-width: 1240px;
      gap: 24px;
    }
    #header .logo {
      font-weight: 700;
      font-size: 32px;
      letter-spacing: 2px;
      text-transform: none;
      margin-right: auto;
    }
    #header .logo a { letter-spacing: inherit; }
    #navbar { margin-left: auto; }
    .navbar ul { gap: 6px; }
    .navbar a, .navbar a:focus {
      background: transparent !important;
      border-radius: 0;
      padding: 8px 10px;
      position: relative;
      color: rgba(226, 232, 240, 0.9);
      font-weight: 600;
      font-size: 15px;
    }
    .navbar a::after {
      content: "";
      position: absolute;
      left: 10px; right: 10px; bottom: -6px;
      height: 2px;
      background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.9), transparent);
      opacity: 0;
      transform: scaleX(0.6);
      transition: opacity 0.25s ease, transform 0.25s ease;
    }
    .navbar a:hover, .navbar .active, .navbar .active:focus, .navbar li:hover > a {
      color: #e6f6ff;
    }
    .navbar a:hover::after,
    .navbar .active::after,
    .navbar .active:focus::after,
    .navbar li:hover > a::after {
      opacity: 1;
      transform: scaleX(1);
    }
    .mobile-nav-toggle.bx-x { color: #fff; }
    .navbar-mobile {
      background: rgba(2, 6, 23, 0.9);
      backdrop-filter: blur(10px);
    }
    .navbar-mobile ul {
      background: rgba(15, 23, 42, 0.96);
      border: 1px solid rgba(148, 163, 184, 0.2);
      box-shadow: 0 18px 40px rgba(2, 6, 23, 0.45);
    }
    .navbar-mobile a {
      color: rgba(226, 232, 240, 0.9);
    }
    .navbar-mobile a:hover,
    .navbar-mobile .active,
    .navbar-mobile li:hover > a {
      color: #ffffff;
    }
    .navbar-mobile .getstarted {
      color: #ffffff;
      border-color: rgba(56, 189, 248, 0.6);
      background: rgba(14, 165, 233, 0.15);
    }

    /* ========================================
       E. Hero Section
    ======================================== */
    #hero {
      background: linear-gradient(135deg, #001428 0%, #0e357d 50%, #1a5490 100%);
      position: relative;
      overflow: hidden;
      flex: 1;
      height: auto !important;
      min-height: 200px;
      animation: none;
      display: flex;
      align-items: center;
    }
    #hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(2, 10, 25, 0.82) 0%, rgba(2, 10, 25, 0.62) 45%, rgba(2, 10, 25, 0.78) 100%);
      z-index: 1;
      pointer-events: none;
      mix-blend-mode: normal;
    }
    #hero .container {
      position: relative;
      z-index: 2;
      max-width: 1200px;
      padding-top: clamp(30px, 4vh, 60px);
      padding-bottom: clamp(20px, 3vh, 40px);
    }
    .hero-image-bg {
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      z-index: 0;
    }
    .hero-video-bg {
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      overflow: hidden;
      z-index: 0;
    }
    .hero-video-bg video {
      position: absolute;
      top: 50%; left: 50%;
      min-width: 100%; min-height: 100%;
      width: auto; height: auto;
      transform: translate(-50%, -50%);
      object-fit: cover;
      transition: opacity 0.8s ease-in-out;
      filter: saturate(1.05) contrast(1.05) brightness(0.95);
    }
    #heroVideo {
      filter: saturate(1) contrast(1.02) brightness(0.92);
    }
    .video-overlay {
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background: linear-gradient(135deg, rgba(2, 10, 25, 0.42) 0%, rgba(14, 53, 125, 0.3) 55%, rgba(26, 84, 144, 0.18) 100%);
      z-index: 1;
    }
    .hero-kicker {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 12px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: #cfefff;
      background: rgba(56, 189, 248, 0.12);
      border: 1px solid rgba(56, 189, 248, 0.35);
      margin-bottom: 14px;
    }
    .hero-single {
      width: min(100%, 680px);
      padding: 36px 42px;
      text-align: center !important;
      align-items: center !important;
    }
    .hero-single h1, .hero-single h2 { text-align: center !important; }
    .hero-single h1 {
      font-size: clamp(34px, 4.2vw, 56px);
      letter-spacing: -0.02em;
      margin-bottom: 12px;
      color: #f8fafc;
      text-shadow: 0 10px 28px rgba(2, 6, 23, 0.45);
      line-height: 1.12;
    }
    .hero-single h2 {
      font-size: clamp(16px, 2vw, 22px);
      line-height: 1.6;
      color: rgba(226, 232, 240, 0.86);
      max-width: 560px;
      margin-left: auto;
      margin-right: auto;
      margin-bottom: 24px;
    }
    .hero-single .hero-actions {
      justify-content: center !important;
      gap: 12px;
      margin-top: 8px;
    }
    .hero-actions {
      gap: 14px;
      flex-wrap: wrap;
    }
    #hero .btn-get-started {
      font-family: var(--font-sans);
      padding: 14px 36px;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--brand-accent-3), var(--brand-accent-2));
      box-shadow: 0 10px 22px rgba(56, 189, 248, 0.35);
      border: none;
      min-width: 140px;
      text-align: center;
    }
    #hero .btn-get-started:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 36px rgba(20, 184, 166, 0.45);
    }
    #hero .btn-watch-video {
      border: 1px solid rgba(255, 255, 255, 0.32);
      background: rgba(15, 23, 42, 0.32);
      padding: 10px 20px;
      border-radius: 999px;
      backdrop-filter: blur(8px);
      color: #e2e8f0;
    }
    #hero .btn-watch-video i { color: var(--brand-accent-3); }
    #hero .btn-watch-video:hover {
      background: rgba(15, 23, 42, 0.35);
      border-color: rgba(56, 189, 248, 0.7);
    }
    #hero .typing-effect {
      white-space: normal;
      overflow: visible;
      border-right: none;
    }

    /* ========================================
       F. Sections General
    ======================================== */
    section { padding: clamp(64px, 8vh, 92px) 0; }
    .section-title h2 {
      position: relative;
      display: inline-block;
      padding-bottom: 15px;
      font-size: 34px;
      letter-spacing: -0.01em;
      color: var(--text-strong);
    }
    .section-title { margin-bottom: 36px; }
    .section-title h2::before {
      content: '';
      position: absolute;
      bottom: 0; left: 50%;
      transform: translateX(-50%);
      width: 120px;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--brand-accent-3), var(--brand-accent-2), transparent);
      animation: none;
      box-shadow: none;
    }
    .section-title p {
      color: var(--text-muted);
      max-width: 760px;
      margin: 12px auto 0;
    }
    .section-bg {
      background: linear-gradient(135deg, rgba(248, 250, 252, 0.96), rgba(226, 232, 240, 0.9)) !important;
      border: 1px solid rgba(148, 163, 184, 0.2);
    }
    .back-to-top {
      background: linear-gradient(135deg, var(--brand-accent-3), var(--brand-accent-2));
      box-shadow: 0 10px 22px rgba(56, 189, 248, 0.35);
    }

    /* ========================================
       About
    ======================================== */
    #about .content p {
      font-size: 16px;
      line-height: 1.8;
    }
    #about .content ul {
      margin-top: 16px;
    }
    #about .content ul li {
      padding-left: 30px;
      font-size: 16px;
      line-height: 1.7;
    }
    #about .content ul i {
      color: var(--brand-accent);
    }

    /* ========================================
       Why Us (Brand-aligned)
    ======================================== */
    #why-us .content {
      padding: clamp(40px, 5vw, 72px) clamp(18px, 6vw, 96px) 0;
    }
    #why-us .content h3 {
      font-weight: 700;
      font-size: clamp(26px, 2.6vw, 34px);
      letter-spacing: -0.01em;
      color: var(--text-strong);
    }
    #why-us .content h4 {
      font-size: 20px;
      font-weight: 700;
      margin-top: 5px;
      color: var(--text-strong);
    }
    #why-us .content p {
      font-size: 16px;
      line-height: 1.75;
      color: var(--text-body);
    }
    #why-us .row {
      align-items: flex-start;
    }
    #why-us .img {
      align-self: flex-start;
    }
    #why-us .why-us-visual {
      border-radius: var(--radius-xl);
      border: 1px solid rgba(148, 163, 184, 0.22);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      background: #08101f;
    }
    #why-us .why-us-visual img {
      display: block;
      width: 100%;
      height: auto;
    }
    #why-us .accordion-list {
      padding: 0 clamp(18px, 6vw, 96px) clamp(40px, 6vw, 72px);
    }
    #why-us .accordion-list ul {
      padding: 0;
      list-style: none;
    }
    #why-us .accordion-list li + li {
      margin-top: 14px;
    }
    #why-us .accordion-list li {
      padding: 0;
      background: rgba(255, 255, 255, 0.94);
      border-radius: var(--radius-lg);
      border: 1px solid rgba(15, 23, 42, 0.08);
      box-shadow: 0 12px 24px rgba(15, 23, 42, 0.06);
      overflow: hidden;
    }
    #why-us .accordion-list a {
      display: block;
      position: relative;
      font-family: var(--font-sans);
      font-size: 16px;
      line-height: 1.5;
      font-weight: 700;
      padding: 18px 52px 18px 18px;
      color: var(--text-strong);
      cursor: pointer;
    }
    #why-us .accordion-list a:hover {
      color: var(--brand-accent);
    }
    #why-us .accordion-list a:focus-visible {
      outline: 2px solid rgba(56, 189, 248, 0.55);
      outline-offset: 3px;
      border-radius: 14px;
    }
    #why-us .accordion-list span {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      border-radius: 999px;
      margin-right: 10px;
      color: #ffffff;
      font-weight: 800;
      font-size: 12px;
      background: linear-gradient(135deg, var(--brand-accent-3), var(--brand-accent-2));
      box-shadow: 0 10px 22px rgba(56, 189, 248, 0.28);
      letter-spacing: 0.08em;
    }
    #why-us .accordion-list i {
      font-size: 22px;
      position: absolute;
      right: 18px;
      top: 18px;
      color: var(--text-muted);
    }
    #why-us .accordion-list .icon-show {
      display: none;
    }
    #why-us .accordion-list a.collapsed {
      color: var(--text-strong);
    }
    #why-us .accordion-list a.collapsed:hover {
      color: var(--brand-accent);
    }
    #why-us .accordion-list a.collapsed .icon-show {
      display: inline-block;
    }
    #why-us .accordion-list a.collapsed .icon-close {
      display: none;
    }
    #why-us .accordion-list .collapse,
    #why-us .accordion-list .collapsing {
      background: rgba(255, 255, 255, 0.94);
    }
    #why-us .accordion-list p {
      margin-bottom: 0;
      padding: 0 18px 18px 18px;
      font-size: 15px;
      line-height: 1.75;
      color: var(--text-body);
    }
    @media (max-width: 1024px) {
      #why-us .content, #why-us .accordion-list {
        padding-left: 0;
        padding-right: 0;
      }
    }
    @media (max-width: 992px) {
      #why-us .content {
        padding-top: 30px;
      }
      #why-us .accordion-list {
        padding-bottom: 30px;
      }
    }
    .back-to-top:hover {
      background: linear-gradient(135deg, var(--brand-accent), var(--brand-accent-3));
    }

    /* ========================================
       G. Services
    ======================================== */
    #services .icon-box {
      border-radius: var(--radius-lg);
      border: 1px solid rgba(15, 23, 42, 0.08);
      background: #fff;
      box-shadow: var(--shadow-card);
      position: relative;
      overflow: hidden;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      padding: 36px 28px;
      height: 100%;
    }
    #services .icon-box .icon {
      margin-bottom: 14px;
    }
    #services .icon-box::before { opacity: 0; }
    #services .icon-box:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      background: var(--brand-surface);
    }
    #services .icon-box .icon i {
      background: linear-gradient(135deg, var(--brand-accent-3), var(--brand-accent-2));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      filter: drop-shadow(0 0 12px rgba(56, 189, 248, 0.4));
    }
    #services .icon-box::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--brand-accent-3), var(--brand-accent-2));
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    #services .icon-box:hover::before { opacity: 1; }
    #services .icon-box h4 {
      font-size: 20px;
      margin-bottom: 12px;
    }
    #services .icon-box h4 a {
      color: var(--text-strong);
    }
    #services .icon-box p {
      color: var(--text-body);
      font-size: 15px;
      line-height: 1.7;
    }
    #services .icon-box:hover p { color: var(--text-body); }
    #services .icon-box:hover h4 a {
      color: var(--brand-accent);
      text-shadow: none;
    }

    /* ========================================
       H. Skills Section
    ======================================== */
    #skills .progress-bar-wrap {
      background: #e8edf5;
      height: 10px;
      border-radius: 5px;
      overflow: hidden;
    }
    #skills .progress-bar {
      width: 1px;
      height: 10px;
      transition: 0.9s;
      background: linear-gradient(90deg, #0e357d, #1a5490);
      box-shadow: 0 0 20px rgba(56, 189, 248, 0.45);
      position: relative;
      overflow: hidden;
      border-radius: 5px;
    }
    #skills .progress-bar::after {
      content: '';
      position: absolute;
      top: 0; left: -100%;
      width: 100%; height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
      animation: shimmer 2s infinite;
    }
    @keyframes shimmer {
      0% { left: -100%; }
      100% { left: 100%; }
    }

    /* ========================================
       I. Portfolio
    ======================================== */
    #portfolio .portfolio-container {
      display: flex;
      flex-wrap: wrap;
      margin: 0 -15px;
    }
    #portfolio #portfolio-flters {
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 24px;
      padding: 0;
    }
    #portfolio #portfolio-flters li {
      background: rgba(15, 23, 42, 0.08);
      color: var(--text-strong);
      border-radius: 999px;
      padding: 8px 18px;
      font-weight: 600;
    }
    #portfolio #portfolio-flters li:hover,
    #portfolio #portfolio-flters li.filter-active {
      background: linear-gradient(135deg, var(--brand-accent-3), var(--brand-accent-2));
      color: #fff;
      box-shadow: 0 10px 22px rgba(56, 189, 248, 0.3);
    }
    #portfolio .portfolio-item {
      position: relative;
      margin-bottom: 30px;
      transition: all 0.3s ease;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }
    #portfolio .portfolio-item:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    #portfolio .portfolio-img {
      position: relative;
      overflow: hidden;
      width: 100%;
      aspect-ratio: 3 / 2;
      background: #1a1a2e;
    }
    #portfolio .portfolio-img img {
      width: 100%; height: 100%;
      object-fit: cover;
      object-position: center;
      display: block;
    }
    #portfolio .portfolio-img::after {
      content: '';
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background: linear-gradient(135deg, rgba(1, 14, 23, 0.8), rgba(14, 53, 125, 0.8));
      opacity: 0;
      transition: opacity 0.3s;
    }
    #portfolio .portfolio-item:hover .portfolio-img::after { opacity: 1; }
    .portfolio .portfolio-item .portfolio-info {
      background: linear-gradient(135deg, rgba(2, 6, 23, 0.78), rgba(14, 53, 125, 0.78));
      border-radius: 0 0 var(--radius-lg) var(--radius-lg);
      backdrop-filter: blur(6px);
      padding: 14px 18px;
    }
    .portfolio .portfolio-item .portfolio-info h4 {
      color: #ffffff;
    }
    .portfolio .portfolio-item .portfolio-info p {
      color: rgba(226, 232, 240, 0.85);
    }
    .portfolio .portfolio-item .portfolio-info .preview-link {
      color: #ffffff;
    }
    .portfolio .portfolio-item .portfolio-info .preview-link:hover {
      color: var(--brand-accent-3);
    }

    /* ========================================
       J2. Scenario Detail
    ======================================== */
    .scenario-detail .scenario-detail-card {
      height: 100%;
      background: rgba(255, 255, 255, 0.96);
      border: 1px solid rgba(15, 23, 42, 0.08);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      padding: 24px;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      position: relative;
      overflow: hidden;
    }
    .scenario-detail .scenario-detail-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--brand-accent-3), var(--brand-accent-2));
      opacity: 0;
      transition: opacity 0.25s ease;
    }
    .scenario-detail .scenario-detail-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .scenario-detail .scenario-detail-card:hover::before { opacity: 1; }
    .scenario-detail .scenario-detail-card h3 {
      margin: 0 0 14px;
      font-size: 21px;
      color: var(--text-strong);
    }
    .scenario-detail .scenario-cover {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      aspect-ratio: 16 / 9;
      border-radius: 14px;
      overflow: hidden;
      margin-bottom: 14px;
      background: linear-gradient(180deg, #f7fbff, #edf4fb);
      border: 1px solid rgba(15, 23, 42, 0.08);
      padding: 12px;
    }
    .scenario-detail .scenario-cover::after {
      display: none;
    }
    .scenario-detail .scenario-cover img {
      width: auto;
      height: auto;
      max-width: 100%;
      max-height: 100%;
      object-fit: contain;
      object-position: center;
      display: block;
      transition: transform 0.35s ease;
    }
    .scenario-detail .scenario-detail-card:hover .scenario-cover img {
      transform: scale(1.02);
    }
    .scenario-detail .scenario-detail-card dl {
      margin: 0;
      display: grid;
      gap: 10px;
    }
    .scenario-detail .scenario-detail-card dl div {
      display: grid;
      grid-template-columns: 86px 1fr;
      gap: 8px;
      align-items: start;
      border-top: 1px dashed rgba(148, 163, 184, 0.4);
      padding-top: 10px;
    }
    .scenario-detail .scenario-detail-card dl div:first-child {
      border-top: none;
      padding-top: 0;
    }
    .scenario-detail .scenario-detail-card dt {
      margin: 0;
      font-size: 13px;
      font-weight: 700;
      color: #0f5da8;
      letter-spacing: 0.03em;
    }
    .scenario-detail .scenario-detail-card dd {
      margin: 0;
      color: var(--text-body);
      line-height: 1.7;
      font-size: 15px;
    }

    /* ========================================
       J3. Credentials
    ======================================== */
    .credentials {
      padding: 84px 0;
      background:
        radial-gradient(880px 540px at 12% -20%, rgba(20, 184, 166, 0.1), transparent 60%),
        radial-gradient(980px 620px at 94% 120%, rgba(56, 189, 248, 0.12), transparent 60%),
        #f8fbff;
    }
    .credentials .section-title p {
      max-width: 780px;
      margin: 0 auto;
    }
    .credentials-card {
      background: rgba(255, 255, 255, 0.96);
      border: 1px solid rgba(15, 23, 42, 0.08);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      padding: 28px;
    }
    .credentials-preview {
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid rgba(148, 163, 184, 0.3);
      background: #ffffff;
    }
    .credentials-preview img {
      width: 100%;
      height: auto;
      display: block;
    }
    .credentials-content h3 {
      margin: 0 0 12px;
      font-size: 24px;
      color: var(--text-strong);
    }
    .credentials-content p {
      margin: 0 0 14px;
      color: var(--text-body);
      line-height: 1.78;
    }
    .credentials-metrics {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-bottom: 16px;
    }
    .credentials-metrics .metric-item {
      background: rgba(15, 23, 42, 0.03);
      border: 1px solid rgba(148, 163, 184, 0.24);
      border-radius: 12px;
      padding: 10px 12px;
      min-height: 84px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 4px;
    }
    .credentials-metrics .metric-item strong {
      font-size: 22px;
      line-height: 1;
      color: #0f5da8;
      /* 数字等宽优化 */
      font-feature-settings: "tnum";
      font-variant-numeric: tabular-nums;
    }
    .credentials-metrics .metric-item span {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.45;
    }

    /* ========================================
       K. CTA Button
    ======================================== */
    #cta {
      position: relative;
      overflow: hidden;
    }
    #cta::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(2, 6, 23, 0.62), rgba(14, 53, 125, 0.62));
      z-index: 0;
      pointer-events: none;
    }
    #cta .container {
      max-width: 1100px;
      position: relative;
      z-index: 1;
    }
    #cta h3 {
      font-size: clamp(24px, 2.6vw, 32px);
      letter-spacing: -0.01em;
    }
    #cta p {
      color: rgba(226, 232, 240, 0.88);
      line-height: 1.7;
      max-width: 760px;
      margin-bottom: 0;
    }
    #cta .cta-btn-container {
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .cta-btn {
      position: relative;
      overflow: hidden;
      font-family: var(--font-sans);
      border-radius: 999px;
      background: linear-gradient(135deg, var(--brand-accent-3), var(--brand-accent-2));
      box-shadow: 0 0 26px rgba(14, 165, 233, 0.45);
      transition: all 0.3s ease;
      padding: 12px 36px;
      min-height: 48px;
      font-size: 16px;
      font-weight: 600;
    }
    .cta-btn::before {
      content: '';
      position: absolute;
      top: 50%; left: 50%;
      width: 0; height: 0;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.3);
      transform: translate(-50%, -50%);
      transition: width 0.6s, height 0.6s;
    }
    .cta-btn:hover::before { width: 300px; height: 300px; }
    .cta-btn:hover { box-shadow: 0 0 40px rgba(20, 184, 166, 0.7); }

    /* ========================================
       L. Contact Form, FAQ, Scrollbar, Utilities
    ======================================== */
    .faq .faq-list {
      max-width: 980px;
      margin: 0 auto;
      padding: 0;
    }
    .faq .faq-list li {
      border-radius: var(--radius-lg);
      background: #ffffff;
      border: 1px solid rgba(15, 23, 42, 0.08);
      box-shadow: 0 12px 24px rgba(15, 23, 42, 0.06);
    }
    .faq .faq-list a {
      font-family: var(--font-sans);
      line-height: 1.5;
      padding: 2px 46px 2px 54px;
    }
    .faq .faq-list .icon-help {
      color: var(--brand-accent);
      left: 20px;
    }
    .faq .faq-list .icon-show,
    .faq .faq-list .icon-close {
      right: 18px;
    }
    .faq .faq-list p {
      line-height: 1.7;
    }

    /* Hover scale utility */
    .hover-scale {
      transition: transform 0.3s ease;
    }
    .hover-scale:hover {
      transform: scale(1.1);
    }

    /* Page loading animation */
    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(30px); }
      to { opacity: 1; transform: translateY(0); }
    }

    /* Scrollbar */
    ::-webkit-scrollbar { width: 10px; }
    ::-webkit-scrollbar-track { background: #1a1a2e; }
    ::-webkit-scrollbar-thumb {
      background: linear-gradient(135deg, #0e357d, #38bdf8);
      border-radius: 5px;
    }
    ::-webkit-scrollbar-thumb:hover {
      background: linear-gradient(135deg, #0f5da8, #4fd1c5);
    }


    /* Contact form */
    .contact .php-email-form {
      box-shadow: 0 16px 30px rgba(15, 23, 42, 0.08);
      padding: 30px;
      border-radius: var(--radius-lg);
      background: #fff;
      border-top: 1px solid rgba(15, 23, 42, 0.08);
      border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    }
    .contact .php-email-form input,
    .contact .php-email-form textarea {
      border-radius: var(--radius-md);
      border: 1px solid rgba(15, 23, 42, 0.12);
      transition: all 0.3s ease;
      color: var(--text-strong);
      background: #f8fafc;
    }
    .contact .php-email-form input:focus,
    .contact .php-email-form textarea:focus {
      border-color: var(--brand-accent);
      box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
    }
    .contact .php-email-form label {
      color: var(--text-strong);
    }
    .contact .php-email-form button[type="submit"] {
      background: linear-gradient(135deg, var(--brand-accent-3), var(--brand-accent-2));
      border: none;
      border-radius: 999px;
      padding: 12px 36px;
      min-height: 48px;
      font-size: 16px;
      color: white;
      font-weight: 600;
      transition: all 0.3s ease;
      box-shadow: 0 10px 22px rgba(56, 189, 248, 0.35);
    }
    .contact .php-email-form button[type="submit"]:hover {
      transform: translateY(-2px);
      box-shadow: 0 18px 36px rgba(20, 184, 166, 0.45);
    }
    .contact .info {
      border-top: 1px solid rgba(15, 23, 42, 0.08);
      border-bottom: 1px solid rgba(15, 23, 42, 0.08);
      box-shadow: 0 16px 30px rgba(15, 23, 42, 0.08);
    }
    .contact .info i {
      background: rgba(14, 165, 233, 0.12);
      color: var(--brand-accent);
    }
    .contact .info p {
      color: var(--text-body);
    }

    .contact-info-wrapper {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    /* Contact info card hover */
    .contact-info-wrapper .address:hover,
    .contact-info-wrapper .email:hover,
    .contact-info-wrapper .phone:hover {
      transform: translateY(-5px);
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15) !important;
    }

    /* Map hover */
    #baidu-map:hover {
      box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15) !important;
    }

    /* ========================================
       M. Contrast Pass - Text Readability
    ======================================== */
    #about, #skills, #services, #products, #comparison, #portfolio, #faq, #contact, .section-bg {
      color: var(--text-strong);
    }
    #about p, #skills p, #services p, #products p, #comparison p, #portfolio p, #faq p, #contact p,
    #about li, #skills li, #services li, #products li, #comparison li, #portfolio li, #faq li, #contact li {
      color: var(--text-body);
    }
    .faq .faq-list a,
    .faq .faq-list a.collapsed {
      color: var(--text-strong);
    }
    .faq .faq-list p {
      color: var(--text-body);
    }
    .faq .faq-list a:hover,
    .faq .faq-list a.collapsed:hover {
      color: var(--brand-accent);
    }
    .faq .faq-list li {
      border: 1px solid rgba(15, 23, 42, 0.08);
      box-shadow: 0 12px 24px rgba(15, 23, 42, 0.06);
    }
    .faq .faq-list .icon-show,
    .faq .faq-list .icon-close {
      color: var(--text-muted);
    }

    /* ========================================
       N. Contact Info CSS Classes
    ======================================== */
    .contact-card {
      background: #ffffff;
      border: 1px solid rgba(15, 23, 42, 0.08);
      border-radius: var(--radius-lg);
      padding: 20px;
      margin-bottom: 20px;
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease;
    }
    .contact-card-inner { display: flex; align-items: center; }
    .contact-icon-wrap {
      background: rgba(14, 165, 233, 0.12);
      border-radius: 12px;
      width: 50px; height: 50px;
      display: flex; align-items: center; justify-content: center;
      margin-right: 15px;
      flex-shrink: 0;
    }
    .contact-icon-wrap i { font-size: 24px; color: var(--brand-accent); }
    .contact-card h4 {
      color: var(--text-strong);
      margin: 0 0 8px 0;
      font-size: 16px;
      font-weight: 600;
    }
    .contact-card p { color: var(--text-body); margin: 0; font-size: 15px; line-height: 1.7; }
    .contact-card a { color: var(--brand-accent); text-decoration: none; border-bottom: 1px dotted rgba(14,165,233,0.5); }
    .contact-card a.phone-link { color: var(--text-strong); text-decoration: none; border-bottom: none; }
    .contact-map {
      width: 100%;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      margin-top: 18px;
    }
    .contact-map img { width: 100%; height: auto; display: block; }

    /* ========================================
       O. Footer Dark Theme
    ======================================== */
    #footer {
      background: #0b1220;
      color: rgba(226, 232, 240, 0.85);
    }
    #footer .footer-top {
      background: #0b1220;
      border-top: 1px solid rgba(148, 163, 184, 0.12);
      padding: 64px 0 36px;
    }
    #footer .footer-top h3,
    #footer .footer-top h4 {
      color: #f1f5f9;
    }
    #footer .footer-top .footer-contact p,
    #footer .footer-summary,
    #footer .footer-follow p,
    #footer .footer-top .footer-links li a {
      color: rgba(226, 232, 240, 0.7);
    }
    #footer .footer-top .footer-links li a:hover {
      color: var(--brand-accent-3);
    }
    #footer .footer-brand h3 {
      font-size: 28px;
      line-height: 1.2;
      margin-bottom: 14px;
    }
    #footer .footer-eyebrow {
      display: inline-block;
      margin-bottom: 14px;
      color: var(--brand-accent-3);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.18em;
      text-transform: uppercase;
    }
    #footer .footer-summary {
      max-width: 360px;
      margin-bottom: 22px;
      line-height: 1.8;
    }
    #footer .footer-contact-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 14px;
    }
    #footer .footer-contact-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      color: rgba(226, 232, 240, 0.82);
      line-height: 1.7;
    }
    #footer .footer-contact-list i {
      color: var(--brand-accent-3);
      font-size: 18px;
      margin-top: 4px;
      flex-shrink: 0;
    }
    #footer .footer-contact-list a {
      color: rgba(241, 245, 249, 0.92);
      text-decoration: none;
      border-bottom: none;
    }
    #footer .footer-contact-list a:hover {
      color: var(--brand-accent-3);
      text-decoration: none;
    }
    #footer .footer-divider {
      color: rgba(148, 163, 184, 0.6);
      margin: 0 2px;
    }
    #footer .footer-links h4,
    #footer .footer-follow h4 {
      margin-bottom: 18px;
      font-size: 18px;
    }
    #footer .footer-links ul {
      margin-bottom: 0;
    }
    #footer .footer-follow p {
      max-width: 240px;
      margin: 0 auto 18px;
      line-height: 1.7;
    }
    #footer .footer-qr-card {
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      gap: 12px;
      padding: 18px 18px 14px;
      border-radius: 18px;
      background: rgba(15, 23, 42, 0.72);
      border: 1px solid rgba(148, 163, 184, 0.14);
      box-shadow: 0 16px 40px rgba(2, 6, 23, 0.28);
    }
    #footer .footer-qr-card img {
      width: 168px;
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: 12px;
      box-shadow: 0 10px 24px rgba(2, 6, 23, 0.24);
    }
    #footer .footer-qr-card span {
      color: rgba(226, 232, 240, 0.76);
      font-size: 13px;
      letter-spacing: 0.08em;
    }
    .footer-newsletter {
      background: linear-gradient(135deg, #0b1220 0%, #0b2a4a 100%);
    }
    #footer .footer-bottom {
      background: rgba(2, 6, 23, 0.5);
      border-top: 1px solid rgba(148, 163, 184, 0.12);
      padding: 18px 0;
    }
    #footer .footer-bottom.clearfix::after {
      content: none;
      display: none;
    }
    #footer .footer-bottom-inner {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 10px 22px;
      text-align: center;
    }
    #footer .copyright,
    #footer .credits {
      float: none;
      width: auto;
      text-align: center;
      margin: 0;
      padding: 0;
    }
    #footer .copyright {
      color: rgba(226, 232, 240, 0.72);
    }
    #footer .credits a {
      color: rgba(226, 232, 240, 0.82);
      text-decoration: none;
    }
    #footer .credits a:hover {
      color: var(--brand-accent-3);
      text-decoration: none;
    }

    /* ========================================
       Motion Reduction
    ======================================== */
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
      }
      .hero-video-bg { display: none; }
    }

    /* ========================================
       P. Responsive Media Queries (consolidated)
    ======================================== */
    @media (max-width: 991px) {
      #hero { min-height: 260px; }
      section { padding: clamp(56px, 7vh, 72px) 0; }
      .navbar a::after { left: 0; right: 0; }

    }
    @media (max-width: 768px) {
      #footer .footer-top {
        padding: 52px 0 28px;
      }
      #footer .footer-brand h3 {
        font-size: 24px;
      }
      #footer .footer-summary,
      #footer .footer-follow p {
        max-width: none;
      }
      #footer .footer-follow {
        text-align: left !important;
      }
      #footer .footer-follow p {
        margin-left: 0;
        margin-right: 0;
      }
      #footer .footer-bottom-inner {
        gap: 6px 14px;
      }
      .first-screen { height: auto; }
      h1 { font-size: 28px !important; }
      h2 { font-size: 24px !important; }
      h3 { font-size: 20px !important; }
      h4 { font-size: 18px !important; }
      .cta { background-attachment: scroll; }
      .comparison-section .section-title .comparison-title-line {
        max-width: 100%;
        grid-template-columns: 1fr;
        row-gap: 10px;
      }
      .comparison-section .comparison-side {
        font-size: 13px;
        min-height: 44px;
        padding: 7px 12px;
        justify-self: center !important;
      }
      .comparison-section .comparison-vs-text {
        width: 44px;
        height: 44px;
        font-size: 14px;
      }
      #why-us .container-fluid { padding: 0 18px; }
      #why-us .img { margin: 0 0 16px; }
      #why-us .accordion-list a { padding: 12px 40px 12px 12px; }
      #why-us .accordion-list span { width: 28px; height: 28px; font-size: 11px; }
      #why-us .accordion-list i { top: 12px; right: 12px; }
      #why-us .accordion-list p { padding: 0 12px 14px 12px; }
      .btn-get-started, .cta-btn {
        padding: 14px 28px !important;
        min-height: 48px;
      }
      section { padding: 40px 0; }
      .stat-number { font-size: 3rem !important; }
      .comparison-table th, .comparison-table td {
        font-size: 0.9rem !important;
        padding: 15px 10px !important;
      }
      #hero { min-height: 220px; }
      #hero .container { padding-top: 40px; }
      .product-img { height: 200px; }
      .hero-video-bg { display: none; }
      #hero { background: linear-gradient(135deg, #001428 0%, #0e357d 50%, #1a5490 100%); }
      .hero-single { padding: 30px 26px; }

      .products { padding: 60px 0; }
      .product-info { padding: 20px; }
      .product-info h4 { font-size: 1.1rem; }
      .product-info p {
        font-size: 0.85rem;
        -webkit-line-clamp: 3;
      }
      .product-matrix {
        padding: 56px 0;
      }
      .matrix-card {
        padding: 20px;
      }
      .matrix-head h3 {
        font-size: 18px !important;
      }
      .solution-architecture .solution-body {
        padding: 18px;
      }
      .solution-architecture .solution-body h3 {
        font-size: 19px !important;
      }
      .methodology {
        padding: 56px 0;
      }
      .methodology-grid {
        grid-template-columns: 1fr;
      }
      .method-card {
        min-height: auto;
      }
      .scenario-detail .scenario-detail-card {
        padding: 20px;
      }
      .scenario-detail .scenario-detail-card h3 {
        font-size: 18px !important;
      }
      .scenario-detail .scenario-detail-card dl div {
        grid-template-columns: 1fr;
        gap: 4px;
      }
      .credentials {
        padding: 56px 0;
      }
      .credentials-card {
        padding: 20px;
      }
      .credentials-content h3 {
        font-size: 20px !important;
      }
      .credentials-metrics {
        grid-template-columns: 1fr;
      }
      .contact-info-wrapper .address,
      .contact-info-wrapper .email,
      .contact-info-wrapper .phone {
        padding: 15px !important;
      }
      .contact-info-wrapper .address > div,
      .contact-info-wrapper .email > div,
      .contact-info-wrapper .phone > div {
        flex-direction: column;
        text-align: center;
      }
      .contact-info-wrapper .address > div > div:first-child,
      .contact-info-wrapper .email > div > div:first-child,
      .contact-info-wrapper .phone > div > div:first-child {
        margin-right: 0 !important;
        margin-bottom: 10px;
      }
    }
    @media (min-width: 769px) and (max-width: 991px) {
      h2 { font-size: 28px; }
      h3 { font-size: 22px; }
      .stat-item { padding: 25px 15px !important; }
      .stat-icon { font-size: 2.5rem !important; margin-bottom: 12px !important; }
      .stat-number { font-size: 3rem !important; margin-bottom: 10px !important; }
      .stat-label { font-size: 0.75rem !important; margin-top: 10px !important; }
    }