:root {
            --primary: #0a3b5e;
            --primary-light: #1f5881;
            --accent: #e9b741;
            --light-bg: #f8fafd;
            --gray-soft: #eef3f7;
            --text-dark: #1a2b3c;
            --consumer-accent: #c06b2b; /* 消費性電子點綴色 */
        }
        body {
            font-family: 'Segoe UI', 'Noto Sans TC', 'PingFang TC', system-ui, sans-serif;
            color: var(--text-dark);
            line-height: 1.6;
        }
        h1, h2, h3, .h1, .h2 {
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--primary);
        }
        .navbar {
            background: white !important;
            box-shadow: 0 6px 18px rgba(0,35,70,0.05);
            padding: 0.8rem 0;
        }
        .navbar-brand {
            font-weight: 700;
            color: var(--primary) !important;
            font-size: 1.8rem;
            letter-spacing: -0.5px;
        }
        .brand-sub {
            font-size: 0.9rem;
            color: #4f6f8f;
            font-weight: 400;
            border-left: 2px solid var(--accent);
            padding-left: 0.7rem;
            margin-left: 0.7rem;
        }
        .nav-link {
            font-weight: 500;
            color: #1f3f5c !important;
            margin: 0 0.2rem;
            font-size: 1.05rem;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary) !important;
            background: #e9f0f9;
            border-radius: 40px;
        }
        .page-header {
            background: linear-gradient(165deg, #fdf0e0 0%, #f9fcff 100%);
            padding: 140px 0 60px 0;
            margin-top: 76px;
            border-bottom: 4px solid var(--consumer-accent);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 1.5rem;
            position: relative;
        }
        .section-title:after {
            content: '';
            display: block;
            width: 80px;
            height: 5px;
            background: var(--consumer-accent);
            margin-top: 0.8rem;
            border-radius: 8px;
        }
        .keyword-cloud {
            background: white;
            border-radius: 40px;
            padding: 1.2rem 2rem;
            border: 1px solid var(--consumer-accent);
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
        }
        .keyword-badge {
            background: #e9f0f9;
            color: var(--primary);
            padding: 0.4rem 1.2rem;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            border: 1px solid #b0cbe7;
        }
        .geo-card {
            background: var(--light-bg);
            border-radius: 32px;
            padding: 2rem;
            border-left: 8px solid var(--consumer-accent);
            margin: 2rem 0;
        }
        .stats-badge {
            background: var(--primary);
            color: white;
            border-radius: 60px;
            padding: 0.5rem 1.8rem;
            font-weight: 500;
            display: inline-block;
            margin-right: 0.8rem;
            margin-bottom: 1rem;
        }
        .btn-outline-primary {
            border-color: var(--primary);
            color: var(--primary);
            border-radius: 40px;
            padding: 0.6rem 2rem;
            font-weight: 500;
        }
        .btn-outline-primary:hover {
            background: var(--primary);
            color: white;
        }
        footer {
            background: #0c2d44;
            color: #ccddee;
            padding: 3rem 0;
        }
        footer a { color: #ffefcf; text-decoration: none; }
        .feature-icon {
            color: var(--consumer-accent);
            font-size: 1.5rem;
            margin-right: 0.8rem;
        }
        .application-card {
            background: white;
            border-radius: 36px;
            padding: 2rem;
            height: 100%;
            border: 1px solid #d4e2f0;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .application-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 24px 32px -12px #0a3b5e33;
            border-color: var(--primary-light);
        }
        .app-icon {
            font-size: 2.8rem;
            color: var(--consumer-accent);
            margin-bottom: 1.2rem;
        }
        .industry-stats {
            background: var(--consumer-accent);
            color: white;
            border-radius: 30px;
            padding: 0.5rem 1.5rem;
            display: inline-block;
            font-weight: 500;
        }
        .spec-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .spec-item {
            background: var(--light-bg);
            border-radius: 28px;
            padding: 1.5rem 1rem;
            text-align: center;
            border: 1px solid #c9ddef;
        }
        .spec-item .number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .spec-item .label {
            font-size: 0.9rem;
            color: #2f5575;
        }