:root {
    --primary-white: #FFFFFF;
    --digital-blue: #1976D2;
    --hotspot-red: #FF5252;
    --fresh-green: #4CAF50;
    --dark-text: #212121;
    --light-gray: #F5F5F5;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--dark-text);
    background-color: var(--primary-white);
    line-height: 1.6;
}

.bg-digital-blue { background-color: var(--digital-blue); }
.text-digital-blue { color: var(--digital-blue); }
.bg-hotspot-red { background-color: var(--hotspot-red); }
.text-hotspot-red { color: var(--hotspot-red); }
.bg-fresh-green { background-color: var(--fresh-green); }
.text-fresh-green { color: var(--fresh-green); }

.navbar {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    background-color: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--digital-blue) !important;
}

.nav-link {
    font-weight: 500;
    color: var(--dark-text) !important;
    transition: color 0.3s;
}

.nav-link:hover {
    color: var(--digital-blue) !important;
}

.hero-section {
    position: relative;
    overflow: hidden;
    background: #000;
    color: white;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero-video-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: 0;
    transform: translate(-50%, -50%);
    opacity: 0.6;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.card {
    border: none;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.footer {
    background-color: #1a1a1a;
    color: #fff;
    padding: 60px 0;
}

.btn-primary {
    background-color: var(--digital-blue);
    border-color: var(--digital-blue);
}

.btn-primary:hover {
    background-color: #1565C0;
    border-color: #1565C0;
}

/* 網格布局優化 */
.dynamic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

/* 數據看板樣式 */
.stat-card {
    text-align: center;
    padding: 20px;
    border-radius: 10px;
    background: #fff;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--digital-blue);
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
    text-transform: uppercase;
}