:root {
    --primary-blue: #0A2647;
    --accent-green: #20C997;
    --titanium-silver: #E9ECEF;
    --dark-bg: #051622;
    --glass-bg: rgba(10, 38, 71, 0.7);
    --text-light: #F8F9FA;
}

body {
    font-family: 'Inter', 'Roboto', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-light);
    overflow-x: hidden;
}

/* 脈衝波背景特效 */
.pulse-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 50% 50%, #0A2647 0%, #051622 100%);
    overflow: hidden;
}

.pulse-bg::after {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: repeating-linear-gradient(0deg, transparent, transparent 49px, rgba(32, 201, 151, 0.05) 50px);
    animation: scan 10s linear infinite;
}

@keyframes scan {
    from { transform: translateY(0); }
    to { transform: translateY(50px); }
}

/* 毛玻璃導覽列 */
.navbar-glass {
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(233, 236, 239, 0.1);
    padding: 1rem 2rem;
}

.nav-link {
    color: var(--text-light) !important;
    font-weight: 500;
    margin: 0 10px;
    transition: color 0.3s;
}

.nav-link:hover, .nav-link.active {
    color: var(--accent-green) !important;
}

/* 數據卡片 */
.glass-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 2rem;
    transition: transform 0.3s, border-color 0.3s;
}

.glass-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-green);
}

.btn-primary-custom {
    background-color: var(--accent-green);
    border: none;
    color: var(--primary-blue);
    font-weight: bold;
    padding: 12px 30px;
    border-radius: 50px;
    transition: all 0.3s;
}

.btn-primary-custom:hover {
    background-color: #18a67d;
    box-shadow: 0 0 20px rgba(32, 201, 151, 0.4);
    color: white;
}

.section-title {
    border-left: 4px solid var(--accent-green);
    padding-left: 15px;
    margin-bottom: 30px;
}

footer {
    background: var(--primary-blue);
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(233, 236, 239, 0.1);
}