:root {
    --bg-color: #0a0e14;
    --text-color: #e0e0e0;
    --primary-color: #00f2ff;
    --accent-color: #007aff;
    --card-bg: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
    --container-width: 1200px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header & Nav */
header {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
    background: rgba(10, 14, 20, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo span {
    color: var(--primary-color);
    font-weight: 400;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    position: relative;
    padding: 10rem 0;
    text-align: center;
    background: radial-gradient(circle at center, rgba(0, 122, 255, 0.1) 0%, transparent 70%);
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -1;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(0, 242, 255, 0.1);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 2rem;
    font-size: 0.8rem;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero h1 span {
    color: var(--primary-color);
    display: block;
}

.hero p {
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.2rem;
    color: #a0a0a0;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
    box-shadow: 0 0 20px rgba(0, 122, 255, 0.3);
}

.btn-primary:hover {
    background-color: #006ae6;
    transform: translateY(-2px);
}

.btn-outline {
    border: 1px solid var(--border-color);
    color: white;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Sections General */
section {
    padding: 8rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 4rem;
}

/* Brands Section */
.brand-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
}

.brand-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    text-align: center;
    font-weight: 600;
    transition: all 0.3s;
}

.brand-item:hover {
    border-color: var(--primary-color);
    background: rgba(0, 242, 255, 0.05);
    transform: scale(1.05);
}

/* Stats Section */
.stats {
    background: rgba(255, 255, 255, 0.02);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stat-card {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #a0a0a0;
    font-size: 1rem;
    text-transform: uppercase;
}

/* Features Section */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.feature-card {
    padding: 3rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, transparent 100%);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.feature-card p {
    color: #a0a0a0;
}

/* Data Preview Table */
.table-container {
    overflow-x: auto;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th, td {
    padding: 1.2rem;
    border-bottom: 1px solid var(--border-color);
}

th {
    background: rgba(255, 255, 255, 0.02);
    font-size: 0.8rem;
    text-transform: uppercase;
    color: #888;
}

td.brand {
    color: var(--primary-color);
    font-weight: 600;
}

.status {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 0.2rem;
    font-size: 0.7rem;
    font-weight: 700;
}

.status.active {
    background: rgba(0, 255, 128, 0.1);
    color: #00ff80;
}

.status.warning {
    background: rgba(255, 166, 0, 0.1);
    color: #ffa600;
}

/* Footer */
footer {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    background: rgba(0, 0, 0, 0.2);
}

.footer-content p {
    margin-bottom: 1rem;
    color: #666;
}

.beian a {
    color: #888;
    text-decoration: none;
    transition: color 0.3s;
}

.beian a:hover {
    color: var(--primary-color);
}

/* Responsive */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 3rem;
    }
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    .btn {
        width: 100%;
        max-width: 300px;
    }
    .nav-links {
        display: none; /* Simplification for prototype */
    }
}