:root {
    --primary-color: #1a365d;
    --secondary-color: #2d5a87;
    --success-color: #00c851;
    --danger-color: #ff4444;
    --warning-color: #ffbb33;
    --info-color: #33b5e5;
    --orange-color: #ff8800;
    --gold-color: #ffd700;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8fafe;
    line-height: 1.6;
}

a {
    text-decoration: none;
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    font-size: 12px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    background: rgba(0,0,0,0.1);
}

.market-ticker {
    display: flex;
    align-items: center;
    gap: 20px;
}

.ticker-item {
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: 500;
}

.ticker-up { color: #00ff88; }
.ticker-down { color: #ff4444; }

.index-card.ticker-up { color: rgba(var(--bs-success-rgb), 1); }
.index-card.ticker-down { color: rgba(var(--bs-danger-rgb), 1); }

.nav-menu {
    background-color: var(--primary-color);
    padding: 12px 0;
}

.nav-menu .nav-link {
    color: white !important;
    font-size: 14px;
    font-weight: 500;
    padding: 10px 16px;
    margin: 0 2px;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-menu .nav-link:hover,
.nav-menu .nav-link.active {
    background: linear-gradient(135deg, rgba(255,255,255,0.15), rgba(255,255,255,0.05));
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #1a365d, #2d5a87, #4a90a4);
    color: white;
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>') repeat;
    opacity: 0.3;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #fff, #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--gold-color);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Market Overview */
.market-overview {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    margin: -30px 0 50px 0;
    padding: 30px;
    position: relative;
    z-index: 3;
}

.index-card {
    background: linear-gradient(135deg, #f8faff, #e8f2ff);
    border: 1px solid #e0e8f0;
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.index-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

.index-card:hover::before {
    left: 100%;
}

.index-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.index-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.index-value {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 8px;
}

.index-change {
    font-size: 1rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

/* Featured Sections */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-title p {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

.feature-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    height: 100%;
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid #f0f4f8;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--info-color));
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
}

.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 2rem;
    color: white;
}

.icon-news { background: linear-gradient(135deg, #ff6b6b, #ee5a52); }
.icon-recommend { background: linear-gradient(135deg, #4ecdc4, #44a08d); }
.icon-price { background: linear-gradient(135deg, #feca57, #ff9ff3); }
.icon-guide { background: linear-gradient(135deg, #48cae4, #0096c7); }
.icon-analysis { background: linear-gradient(135deg, #f72585, #b5179e); }
.icon-tools { background: linear-gradient(135deg, #7209b7, #560bad); }

.feature-card h4 {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

.btn-feature {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-feature:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    color: white;
}

/* News Section */
.news-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 6px 25px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid #f0f4f8;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.news-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
    font-weight: 500;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.news-content {
    padding: 25px;
}

.news-category {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-block;
    margin-bottom: 12px;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 12px;
    line-height: 1.4;
}

.news-title a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.news-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 0.85rem;
    color: #666;
    margin-top: 15px;
}

/* Quick Tools */
.quick-tools {
    background: linear-gradient(135deg, #1a365d, #2d5a87);
    color: white;
    padding: 60px 0;
}

.tool-item {
    text-align: center;
    padding: 25px;
    border-radius: 15px;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    border: 1px solid rgba(255,255,255,0.2);
    height: 100%;
}

.tool-item:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-5px);
}

.tool-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tool-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
}

/* Premium Section */
.premium-section {
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    padding: 60px 0;
    text-align: center;
    color: #333;
}

.premium-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 15px 50px rgba(0,0,0,0.1);
    transform: scale(1.05);
    border: 3px solid var(--gold-color);
}

.premium-badge {
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
    color: white;
    padding: 8px 20px;
    border-radius: 25px;
    font-weight: 600;
    margin-bottom: 20px;
    display: inline-block;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    color: white;
    padding: 60px 0 0;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--gold-color));
}

.footer-section h5 {
    color: white;
    font-weight: 600;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer-section h5::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--gold-color);
}

.footer-link {
    color: #bdc3c7;
    text-decoration: none;
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    font-size: 14px;
    transition: all 0.3s ease;
    padding: 5px 0;
}

.footer-link:hover {
    color: var(--gold-color);
    transform: translateX(8px);
}

.footer-link i {
    margin-right: 10px;
    width: 18px;
    color: var(--gold-color);
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 18px;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.social-icons a:hover {
    background: var(--gold-color);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .section-title h2 {
        font-size: 2rem;
    }
}