:root {
    --primary-blue: #0A2342; /* 絕緣深磁藍 */
    --accent-gold: #FFD700;  /* 電弧閃擊金 */
    --steel-gray: #708090;   /* 鍍鋅鋼架灰 */
    --neutral-white: #FFFFFF; /* 中性白 */
    --dark-bg: #051221;
    --card-bg: rgba(10, 35, 66, 0.8);
    --border-color: rgba(255, 215, 0, 0.3);
}

body {
    background-color: var(--dark-bg);
    color: var(--neutral-white);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

.mono-font {
    font-family: 'JetBrains Mono', 'Courier New', Courier, monospace;
}

/* Navbar Styling */
.navbar {
    background-color: rgba(10, 35, 66, 0.95);
    border-bottom: 2px solid var(--accent-gold);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--accent-gold) !important;
}

.nav-link {
    color: var(--neutral-white) !important;
    text-transform: uppercase;
    font-size: 0.9rem;
    font-weight: 600;
    margin: 0 10px;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero-section {
    position: relative;
    padding: 160px 0 100px;
    background: radial-gradient(circle at center, #0A2342 0%, #051221 100%);
    overflow: hidden;
}

.hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.4;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.brand-slogan {
    color: var(--accent-gold);
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
}

/* Cards & Components */
.gp-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 2rem;
    transition: all 0.3s ease;
    height: 100%;
}

.gp-card:hover {
    border-color: var(--accent-gold);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.15);
    transform: translateY(-5px);
}

.section-title {
    border-left: 4px solid var(--accent-gold);
    padding-left: 15px;
    margin-bottom: 40px;
    font-weight: 700;
}

/* Footer */
footer {
    background-color: #030a12;
    padding: 60px 0 30px;
    border-top: 1px solid var(--steel-gray);
}

.footer-logo {
    color: var(--accent-gold);
    font-size: 1.5rem;
    font-weight: 800;
}

/* Technical Elements */
.tech-data {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-gold);
}

.formula-box {
    background: rgba(0, 0, 0, 0.3);
    padding: 15px;
    border-radius: 4px;
    margin: 15px 0;
    border-left: 2px solid var(--steel-gray);
}

/* Animations */
@keyframes pulse-gold {
    0% { opacity: 0.4; }
    50% { opacity: 1; }
    100% { opacity: 0.4; }
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 8px;
    background-color: #00ff00;
    box-shadow: 0 0 8px #00ff00;
}