* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', sans-serif;
            background: #ffffff;
            color: #1a2c3e;
            line-height: 1.5;
            scroll-behavior: smooth;
        }
        
        /* ========== 图标修复 - 防止图标变形 ========== */
        .fas, .far, .fab, .fa-solid, .fa-regular, .fa-brands {
            font-family: "Font Awesome 6 Free", "Font Awesome 6 Brands", sans-serif !important;
            font-style: normal !important;
            -webkit-font-smoothing: antialiased;
            display: inline-block;
            line-height: 1;
        }
        .fa-solid, .fas { font-weight: 900 !important; }
        .fa-brands { font-family: "Font Awesome 6 Brands" !important; }
        
        /* 确保所有图标容器正确显示 */
        .section-icon i,
        .option-icon i,
        .wireless-icon i,
        .nav-btn i,
        .icon-lg i,
        .stat-card i,
        .key-spec i,
        .feature-card i,
        .app-item i,
        .trust-item i,
        .badge-blue i,
        .badge-purple i,
        .badge-green i {
            font-style: normal !important;
            transform: none !important;
            display: inline-block;
        }
        
        /* 修复所有使用图标的元素 */
        i[class*="fa-"] {
            font-style: normal !important;
        }
        /* ========== 图标修复结束 ========== */
        
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }
        section {
            scroll-margin-top: 80px;
        }
        .badge-blue {
            background: #e8f0fe;
            color: #1e6fdf;
            padding: 6px 14px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
        }
        .badge-green {
            background: #e6f7ec;
            color: #2ecc71;
            padding: 6px 14px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
        }
        .badge-purple {
            background: #f0e6ff;
            color: #8b5cf6;
            padding: 6px 14px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
        }
        h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1.25rem;
            color: #0a2540;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
            color: #0a2540;
        }
        h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
            color: #1a2c3e;
        }
        .hero {
            background: linear-gradient(135deg, #f8fafd 0%, #ffffff 100%);
            padding: 64px 0 48px;
            border-bottom: 1px solid #eef2f8;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .stat-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 32px;
        }
        .stat-card {
            background: white;
            border: 1px solid #eef2f8;
            border-radius: 28px;
            padding: 16px 24px;
            min-width: 130px;
            text-align: center;
            box-shadow: 0 2px 8px rgba(0,0,0,0.02);
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: #1e6fdf;
        }
        .key-specs {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin: 24px 0;
        }
        .key-spec {
            background: #f8fafd;
            border-radius: 12px;
            padding: 8px 16px;
            font-size: 0.85rem;
            font-weight: 500;
        }
        .key-spec i {
            color: #1e6fdf;
            margin-right: 8px;
        }
        .tco-card {
            background: #ffffff;
            border-radius: 32px;
            padding: 28px 24px;
            text-align: center;
            border: 1px solid #eef2f8;
            box-shadow: 0 8px 28px rgba(0,0,0,0.04);
        }
        .tco-card h3 {
            font-size: 1.4rem;
            margin-bottom: 20px;
            color: #0a2540;
        }
        .tco-item {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            padding: 16px 0;
            border-bottom: 1px solid #eef2f8;
        }
        .tco-item:last-child {
            border-bottom: none;
        }
        .tco-label {
            font-weight: 500;
            color: #4a627a;
        }
        .tco-savings {
            font-weight: 800;
            color: #2ecc71;
            font-size: 1.3rem;
        }
        .tco-negative {
            color: #e74c3c;
            text-decoration: line-through;
            font-size: 0.85rem;
            margin-right: 8px;
            opacity: 0.6;
        }
        .tco-card .note {
            margin-top: 20px;
            font-size: 0.75rem;
            color: #8ba0bc;
            border-top: 1px solid #eef2f8;
            padding-top: 16px;
        }
        .savings-badge {
            background: #e6f7ec;
            color: #2ecc71;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 20px;
            margin-left: 8px;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 24px;
            margin: 32px 0;
        }
        .feature-card {
            background: #ffffff;
            border: 1px solid #eef2f8;
            border-radius: 24px;
            padding: 28px;
            transition: all 0.2s;
        }
        .feature-card:hover {
            border-color: #c5d5e8;
            box-shadow: 0 12px 24px -12px rgba(0,0,0,0.08);
        }
        .icon-lg {
            font-size: 2.2rem;
            color: #1e6fdf;
            margin-bottom: 16px;
        }
        .combo-visual {
            background: linear-gradient(135deg, #f8fafd, #ffffff);
            border-radius: 32px;
            padding: 40px 32px;
            text-align: center;
            border: 1px solid #eef2f8;
        }
        .combo-step {
            display: inline-block;
            background: #1e6fdf;
            color: white;
            width: 44px;
            height: 44px;
            border-radius: 44px;
            line-height: 44px;
            font-weight: 700;
            margin: 0 8px;
            font-size: 1rem;
        }
        .combo-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: #1e6fdf;
            margin: 0 4px;
        }
        .trust-badge {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 32px;
            margin: 32px 0;
        }
        .trust-item {
            text-align: center;
            opacity: 0.7;
        }
        .spec-table {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            margin: 24px 0;
        }
        .spec-card {
            background: #f8fafd;
            border-radius: 20px;
            padding: 20px;
        }
        .spec-card h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #1e6fdf;
            margin-bottom: 12px;
        }
        .spec-card p {
            font-size: 0.9rem;
            color: #2c3e50;
        }
        .nav-links {
            display: flex;
            justify-content: center;
            gap: 28px;
            flex-wrap: wrap;
            margin: 32px 0 16px;
        }
        .nav-links a {
            color: #1e6fdf;
            text-decoration: none;
            font-weight: 500;
        }
        .nav-links a:hover {
            text-decoration: underline;
        }
        .disclaimer {
            font-size: 0.7rem;
            color: #8ba0bc;
            text-align: center;
            margin-top: 16px;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2rem; }
            .grid-2 { grid-template-columns: 1fr; gap: 32px; }
            .feature-grid { grid-template-columns: 1fr; }
            .container { padding: 0 20px; }
            .combo-step { width: 36px; height: 36px; line-height: 36px; font-size: 0.85rem; margin: 0 4px; }
        }
        .highlight-text {
            color: #1e6fdf;
            font-weight: 700;
        }
        .application-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 16px;
            margin-top: 24px;
        }
        .app-item {
            background: #f8fafd;
            border-radius: 16px;
            padding: 16px;
            text-align: center;
            font-weight: 500;
        }
        .warning-note {
            background: #fef7e0;
            border-left: 4px solid #f5a623;
            padding: 12px 16px;
            border-radius: 12px;
            margin-top: 16px;
            font-size: 0.8rem;
            text-align: left;
        }
        /* 西文等宽字体 - 用于型号代码 */
        .example-model {
            font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Cascadia Code', monospace;
            font-weight: 700;
            color: #1e6fdf;
            margin-bottom: 8px;
            font-size: 0.9rem;
            letter-spacing: 0.3px;
        }