:root {
    --primary: #d4af37; /* Gold */
    --primary-dark: #b8860b;
    --secondary: #1a1a1a;
    --accent: #2c3e50;
    --bg: #0f0f0f;
    --text: #e0e0e0;
    --text-muted: #a0a0a0;
    --glass: rgba(255, 255, 255, 0.05);
    --border: rgba(255, 255, 255, 0.1);
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.8);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3 {
    color: #fff;
    font-weight: 700;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: 0.3s;
}

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

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
header {
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(15, 15, 15, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(45deg, #d4af37, #fff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    text-align: center;
    background: radial-gradient(circle at center, #1a1a1a 0%, #0f0f0f 100%);
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto 2.5rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: linear-gradient(45deg, var(--primary), var(--primary-dark));
    color: #000;
    font-weight: 700;
    border-radius: 50px;
    font-size: 1.1rem;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
    transition: 0.3s transform, 0.3s box-shadow;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
    color: #000;
}

/* Pricing Section */
.pricing {
    padding: 6rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.pricing-card {
    background: var(--glass);
    border: 1px solid var(--border);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    transition: 0.3s;
    position: relative;
    overflow: hidden;
}

.pricing-card:hover {
    border-color: var(--primary);
    transform: translateY(-10px);
}

.pricing-card.popular {
    border-color: var(--primary);
    background: rgba(212, 175, 55, 0.05);
}

.pricing-card.popular::after {
    content: "最受欢迎";
    position: absolute;
    top: 20px;
    right: -30px;
    background: var(--primary);
    color: #000;
    padding: 5px 40px;
    transform: rotate(45deg);
    font-size: 0.8rem;
    font-weight: 700;
}

.price {
    font-size: 3rem;
    font-weight: 800;
    margin: 1.5rem 0;
    color: var(--primary);
}

.price span {
    font-size: 1rem;
    color: var(--text-muted);
}

.features-list {
    list-style: none;
    margin: 2rem 0;
    text-align: left;
}

.features-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.features-list li::before {
    content: "✓";
    color: var(--primary);
    font-weight: 800;
}

/* Articles / Blog Section */
.blog-section {
    padding: 6rem 0;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.article-card {
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: 15px;
    overflow: hidden;
    transition: 0.3s;
}

.article-card:hover {
    transform: scale(1.02);
    border-color: var(--primary);
}

.article-content {
    padding: 1.5rem;
}

.article-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

/* FAQ Section */
.faq {
    padding: 6rem 0;
}

.faq-item {
    background: var(--glass);
    border: 1px solid var(--border);
    margin-bottom: 1rem;
    border-radius: 10px;
    padding: 1.5rem;
}

.faq-question {
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

/* Footer */
footer {
    padding: 4rem 0;
    border-top: 1px solid var(--border);
    background: #0a0a0a;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 4rem;
}

.footer-title {
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    text-align: center;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    .nav-links {
        display: none;
    }
}