:root {
    --basalt-dark: #212121;
    --lava-orange: #FF5722;
    --strata-gold: #FFB300;
    --laser-blue: #0288D1;
    --text-light: #E0E0E0;
    --text-muted: #9E9E9E;
    --industrial-font: 'Roboto', 'Segoe UI', sans-serif;
    --data-font: 'Roboto Mono', monospace;
}

body {
    background-color: var(--basalt-dark);
    color: var(--text-light);
    font-family: var(--industrial-font);
    overflow-x: hidden;
}

.navbar {
    background-color: rgba(33, 33, 33, 0.95);
    border-bottom: 2px solid var(--lava-orange);
    padding: 1rem 2rem;
}

.navbar-brand {
    font-weight: 900;
    letter-spacing: 2px;
    color: var(--lava-orange) !important;
    text-transform: uppercase;
}

.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(--lava-orange) !important;
}

.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: radial-gradient(circle at center, #333 0%, #212121 100%);
    overflow: hidden;
}

.industrial-card {
    background: rgba(45, 45, 45, 0.8);
    border-left: 4px solid var(--lava-orange);
    padding: 2rem;
    margin-bottom: 2rem;
    transition: transform 0.3s;
}

.industrial-card:hover {
    transform: translateY(-5px);
    background: rgba(55, 55, 55, 0.9);
}

.section-title {
    font-weight: 800;
    text-transform: uppercase;
    border-bottom: 1px solid var(--text-muted);
    padding-bottom: 10px;
    margin-bottom: 30px;
    color: var(--lava-orange);
}

.data-value {
    font-family: var(--data-font);
    color: var(--strata-gold);
}

footer {
    background: #1a1a1a;
    padding: 4rem 0 2rem;
    border-top: 1px solid #333;
}

.btn-lava {
    background-color: var(--lava-orange);
    color: white;
    border: none;
    padding: 10px 25px;
    font-weight: bold;
    text-transform: uppercase;
    transition: all 0.3s;
}

.btn-lava:hover {
    background-color: #e64a19;
    box-shadow: 0 0 15px rgba(255, 87, 34, 0.5);
    color: white;
}

/* 模擬雷射掃描點雲背景 */
.point-cloud-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
    pointer-events: none;
    background-image: radial-gradient(var(--laser-blue) 1px, transparent 1px);
    background-size: 30px 30px;
}