:root {
    --obsidian-black: #010203;
    --silver-white: #F5F7F8;
    --premium-gold: #E3C16F;
    --critical-red: #FF3A30;
    --dark-gray: #1a1a1a;
    --border-color: rgba(245, 247, 248, 0.1);
}

body {
    background-color: var(--obsidian-black);
    color: var(--silver-white);
    font-family: 'Inter', 'Noto Sans TC', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Master-class Aesthetics */
.navbar {
    background-color: rgba(1, 2, 3, 0.95);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--premium-gold) !important;
}

.nav-link {
    color: var(--silver-white) !important;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
    margin: 0 10px;
    transition: color 0.3s ease;
}

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

.hero-section {
    padding: 150px 0 100px;
    background: radial-gradient(circle at center, #0a0a0a 0%, var(--obsidian-black) 100%);
}

.section-title {
    color: var(--premium-gold);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    margin-bottom: 20px;
}

.display-title {
    font-weight: 700;
    margin-bottom: 30px;
}

.card {
    background-color: var(--dark-gray);
    border: 1px solid var(--border-color);
    border-radius: 0;
    transition: all 0.3s ease;
}

.card:hover {
    border-color: var(--premium-gold);
    transform: translateY(-5px);
}

.text-gold { color: var(--premium-gold); }
.text-red { color: var(--critical-red); }

.footer {
    padding: 80px 0 40px;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
}

/* Custom UI Elements */
.data-label {
    font-size: 0.7rem;
    color: rgba(245, 247, 248, 0.5);
    text-transform: uppercase;
}

.data-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.2rem;
    color: var(--silver-white);
}

.btn-outline-gold {
    color: var(--premium-gold);
    border-color: var(--premium-gold);
    border-radius: 0;
    text-transform: uppercase;
    letter-spacing: 2px;
    padding: 10px 25px;
}

.btn-outline-gold:hover {
    background-color: var(--premium-gold);
    color: var(--obsidian-black);
}

/* Scroll Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}