:root {
    --primary-green: #1B3022; /* 深林靜謐綠 */
    --industrial-gray: #4E595B; /* 工業石板灰 */
    --carbon-teal: #20B2AA; /* 碳匯藍綠 */
    --data-white: #FFFFFF; /* 純淨數據白 */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
}

body {
    background-color: var(--primary-green);
    color: var(--data-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;
}

/* 導覽列樣式 */
.navbar {
    background-color: rgba(27, 48, 34, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 2rem;
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--carbon-teal) !important;
}

.nav-link {
    color: var(--data-white) !important;
    margin-left: 1.5rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
}

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

/* 網格佈局與玻璃質感 */
.grid-container {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    padding: 2rem;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

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

/* 按鈕樣式 */
.btn-apex {
    background-color: transparent;
    border: 1px solid var(--carbon-teal);
    color: var(--carbon-teal);
    padding: 0.75rem 1.5rem;
    border-radius: 0;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.btn-apex:hover {
    background-color: var(--carbon-teal);
    color: var(--primary-green);
}

/* 頁尾樣式 */
footer {
    background-color: #0d1a12;
    padding: 4rem 2rem 2rem;
    border-top: 1px solid var(--glass-border);
    margin-top: 4rem;
}

.footer-title {
    color: var(--carbon-teal);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.footer-link {
    color: #888;
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--carbon-teal);
}

/* 動畫效果 */
@keyframes scanline {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100%); }
}

.scanline-effect {
    position: relative;
    overflow: hidden;
}

.scanline-effect::after {
    content: "";
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(to bottom, transparent, rgba(32, 178, 170, 0.1), transparent);
    animation: scanline 4s linear infinite;
    pointer-events: none;
}