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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #e2e8f0;
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: linear-gradient(90deg, #1e293b 0%, #334155 100%);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 2px solid #3b82f6;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav a {
    color: #cbd5e1;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

nav a:hover {
    color: #3b82f6;
}

nav a.active {
    color: #3b82f6;
}

nav a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #3b82f6;
}

.header-buttons {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 10px 25px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 14px;
}

.btn-primary {
    background: linear-gradient(90deg, #3b82f6, #2563eb);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}

.btn-secondary {
    background: linear-gradient(90deg, #10b981, #059669);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.6);
}

.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(90deg, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 18px;
    color: #94a3b8;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.hero-image {
    background: linear-gradient(135deg, #3b82f620, #8b5cf620);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid #334155;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
}

section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 15px;
    color: #f1f5f9;
}

.section-title p {
    color: #94a3b8;
    font-size: 16px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: #1e293b;
    padding: 40px 30px;
    border-radius: 15px;
    border: 1px solid #334155;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: #3b82f6;
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.2);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 24px;
    font-weight: bold;
    color: white;
    text-transform: uppercase;
}

.guide-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 20px;
    color: white;
}

.news-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: bold;
    color: white;
    text-transform: uppercase;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #f1f5f9;
}

.feature-card p {
    color: #94a3b8;
    line-height: 1.8;
}

.exchange-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.exchange-card {
    background: #1e293b;
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid #334155;
    transition: all 0.3s;
}

.exchange-card:hover {
    border-color: #3b82f6;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.exchange-header {
    padding: 30px;
    background: linear-gradient(135deg, #1e293b, #334155);
    border-bottom: 1px solid #334155;
}

.exchange-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    font-size: 32px;
    font-weight: bold;
    color: white;
}

.exchange-card h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: #f1f5f9;
}

.exchange-card .tag {
    display: inline-block;
    background: #10b981;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.exchange-body {
    padding: 30px;
}

.exchange-features {
    list-style: none;
    margin-bottom: 25px;
}

.exchange-features li {
    padding: 10px 0;
    color: #cbd5e1;
    display: flex;
    align-items: center;
    gap: 10px;
}

.exchange-features li::before {
    content: '✓';
    color: #10b981;
    font-weight: bold;
}

.exchange-actions {
    display: flex;
    gap: 15px;
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.guide-card {
    background: #1e293b;
    border-radius: 15px;
    padding: 35px;
    border: 1px solid #334155;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s;
    display: block;
}

.guide-card:hover {
    border-color: #3b82f6;
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(59, 130, 246, 0.2);
}

.guide-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 20px;
    color: white;
}

.guide-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: #f1f5f9;
}

.guide-card p {
    color: #94a3b8;
    font-size: 14px;
    line-height: 1.7;
}

.market-table {
    background: #1e293b;
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid #334155;
}

.market-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    padding: 20px 30px;
    background: #334155;
    font-weight: 600;
    color: #cbd5e1;
}

.market-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    padding: 20px 30px;
    border-bottom: 1px solid #334155;
    align-items: center;
    transition: background 0.3s;
}

.market-row:hover {
    background: #334155;
}

.coin-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.coin-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: white;
}

.coin-name {
    font-weight: 600;
    color: #f1f5f9;
}

.coin-symbol {
    color: #94a3b8;
    font-size: 14px;
}

.price {
    font-weight: 600;
    color: #f1f5f9;
}

.change-up {
    color: #10b981;
    font-weight: 600;
}

.change-down {
    color: #ef4444;
    font-weight: 600;
}

.volume {
    color: #94a3b8;
}

.cta-section {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    text-align: center;
    padding: 80px 0;
}

.cta-section h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: white;
}

.cta-section p {
    font-size: 18px;
    margin-bottom: 35px;
    color: rgba(255, 255, 255, 0.9);
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.cta-section .btn {
    padding: 15px 40px;
    font-size: 16px;
}

.cta-section .btn-primary {
    background: white;
    color: #3b82f6;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-section .btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
}

footer {
    background: #0f172a;
    padding: 60px 0 30px;
    border-top: 1px solid #334155;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 20px;
    display: block;
}

.footer-brand p {
    color: #94a3b8;
    line-height: 1.8;
}

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 25px;
    color: #f1f5f9;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 12px;
}

.footer-col a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: #3b82f6;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #334155;
    color: #64748b;
}

.breadcrumb {
    padding: 20px 0;
    background: #1e293b;
}

.breadcrumb a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s;
}

.breadcrumb a:hover {
    color: #3b82f6;
}

.breadcrumb span {
    color: #64748b;
    margin: 0 10px;
}

.breadcrumb .current {
    color: #f1f5f9;
}

.content-section {
    background: #1e293b;
    border-radius: 15px;
    padding: 40px;
    margin-bottom: 30px;
    border: 1px solid #334155;
}

.content-section h2 {
    font-size: 28px;
    margin-bottom: 25px;
    color: #f1f5f9;
    padding-bottom: 15px;
    border-bottom: 2px solid #3b82f6;
}

.content-section h3 {
    font-size: 22px;
    margin: 30px 0 15px;
    color: #e2e8f0;
}

.content-section p {
    color: #cbd5e1;
    line-height: 1.9;
    margin-bottom: 20px;
}

.content-section ul, .content-section ol {
    margin: 20px 0;
    padding-left: 25px;
}

.content-section li {
    color: #cbd5e1;
    line-height: 1.9;
    margin-bottom: 12px;
}

.content-section img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 20px 0;
}

.faq-item {
    background: #1e293b;
    border-radius: 10px;
    margin-bottom: 15px;
    border: 1px solid #334155;
    overflow: hidden;
}

.faq-question {
    padding: 25px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: #f1f5f9;
    transition: background 0.3s;
}

.faq-question:hover {
    background: #334155;
}

.faq-answer {
    padding: 0 25px 25px;
    color: #cbd5e1;
    line-height: 1.8;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: #e2e8f0;
    font-size: 28px;
    cursor: pointer;
}

.sidebar {
    display: none;
}

@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .exchange-list {
        grid-template-columns: 1fr;
    }

    .guide-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    nav ul {
        display: none;
    }

    .header-buttons {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero-buttons {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }

    .guide-grid {
        grid-template-columns: 1fr;
    }

    .market-header, .market-row {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 32px;
    }

    .section-title h2 {
        font-size: 28px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .exchange-actions {
        flex-direction: column;
    }

    .fixed-bottom-buttons {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: #1e293b;
        padding: 15px;
        display: flex;
        gap: 15px;
        z-index: 1000;
        border-top: 2px solid #3b82f6;
        box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.3);
    }

    .fixed-bottom-buttons .btn {
        flex: 1;
        text-align: center;
        padding: 15px;
        font-size: 16px;
    }
}

img {
    max-width: 100%;
    height: auto;
}

.highlight {
    color: #3b82f6;
    font-weight: 600;
}

.warning-box {
    background: rgba(245, 158, 11, 0.1);
    border-left: 4px solid #f59e0b;
    padding: 20px;
    margin: 20px 0;
    border-radius: 0 10px 10px 0;
}

.info-box {
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid #3b82f6;
    padding: 20px;
    margin: 20px 0;
    border-radius: 0 10px 10px 0;
}

.success-box {
    background: rgba(16, 185, 129, 0.1);
    border-left: 4px solid #10b981;
    padding: 20px;
    margin: 20px 0;
    border-radius: 0 10px 10px 0;
}

.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

table th, table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #334155;
}

table th {
    background: #334155;
    color: #f1f5f9;
    font-weight: 600;
}

table tr:hover {
    background: #334155;
}

.news-card {
    background: #1e293b;
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 25px;
    border: 1px solid #334155;
    transition: all 0.3s;
}

.news-card:hover {
    border-color: #3b82f6;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.15);
}

.news-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    color: #64748b;
    font-size: 14px;
}

.news-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #f1f5f9;
}

.news-card p {
    color: #94a3b8;
    line-height: 1.8;
}

.read-more {
    display: inline-block;
    margin-top: 15px;
    color: #3b82f6;
    text-decoration: none;
    font-weight: 600;
}

.read-more:hover {
    text-decoration: underline;
}

.contact-form {
    background: #1e293b;
    border-radius: 15px;
    padding: 40px;
    border: 1px solid #334155;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: #e2e8f0;
    font-weight: 500;
}

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 15px;
    background: #334155;
    border: 1px solid #475569;
    border-radius: 8px;
    color: #e2e8f0;
    font-size: 16px;
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: #3b82f6;
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}