/* Modern Design System */
:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #dbeafe;
    --secondary: #10b981;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --purple: #8b5cf6;
    --pink: #ec4899;
    
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --radius-sm: 6px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 
                 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Modern Header */
.modern-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    transition: var(--transition);
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo a:hover {
    opacity: 0.8;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    padding: 8px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--radius);
    transition: var(--transition);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--primary);
    background: var(--primary-light);
}

.nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-link {
    padding: 8px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.btn-link:hover {
    color: var(--primary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-large {
    padding: 14px 32px;
    font-size: 18px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* Modern Hero */
.modern-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.modern-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 700px;
    color: white;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.highlight {
    color: #fbbf24;
    text-shadow: 0 2px 10px rgba(251, 191, 36, 0.5);
}

.hero-subtitle {
    font-size: 20px;
    line-height: 1.6;
    opacity: 0.95;
    margin-bottom: 32px;
}

.hero-search {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    max-width: 600px;
}

.search-input {
    flex: 1;
    padding: 16px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    outline: none;
    box-shadow: var(--shadow-lg);
}

.search-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    background: var(--secondary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.search-btn:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.hero-features {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.feature-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    font-size: 14px;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 24px;
    margin-top: 60px;
    padding: 32px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

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

.stat-number {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
}

/* Breadcrumb */
.breadcrumb {
    padding: 20px 0;
    background: var(--bg-primary);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.breadcrumb-list li {
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb-list a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

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

.breadcrumb-list span {
    color: var(--text-primary);
}

/* Content Area */
.content-area {
    padding: 60px 0;
    background: var(--bg-primary);
}

.content-header {
    margin-bottom: 40px;
}

.content-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.content-meta {
    display: flex;
    gap: 24px;
    color: var(--text-secondary);
    font-size: 14px;
}

.content-body {
    max-width: 900px;
}

.content-body h2 {
    font-size: 32px;
    font-weight: 700;
    margin: 40px 0 20px;
    color: var(--text-primary);
}

.content-body h3 {
    font-size: 24px;
    font-weight: 600;
    margin: 32px 0 16px;
    color: var(--text-primary);
}

.content-body p {
    margin-bottom: 20px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.content-body ul, .content-body ol {
    margin: 20px 0;
    padding-left: 24px;
}

.content-body li {
    margin-bottom: 12px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.highlight-box {
    padding: 24px;
    background: var(--primary-light);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius);
    margin: 24px 0;
}

.highlight-box h3 {
    margin-top: 0;
}

/* Section Styles */
.section {
    padding: 80px 0;
}

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

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
}

.report-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 24px;
}

.report-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.report-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.report-card.featured {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary);
}

.icon-wrapper.primary { background: var(--primary-light); color: var(--primary); }
.icon-wrapper.success { background: #d1fae5; color: var(--success); }
.icon-wrapper.warning { background: #fed7aa; color: var(--warning); }
.icon-wrapper.info { background: #dbeafe; color: var(--info); }
.icon-wrapper.purple { background: #ede9fe; color: var(--purple); }
.icon-wrapper.pink { background: #fce7f3; color: var(--pink); }

.featured .icon-wrapper {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.badge {
    padding: 4px 12px;
    border-radius: var(--radius-lg);
    font-size: 12px;
    font-weight: 600;
}

.badge.hot {
    background: #fbbf24;
    color: white;
}

.badge.new {
    background: var(--secondary);
    color: white;
}

.report-card h3 {
    font-size: 24px;
    margin-bottom: 12px;
}

.report-card p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.featured p {
    color: rgba(255, 255, 255, 0.9);
}

.report-features {
    list-style: none;
    margin-bottom: 24px;
}

.report-features li {
    padding: 8px 0;
    color: var(--text-secondary);
}

.featured .report-features li {
    color: rgba(255, 255, 255, 0.9);
}

.card-btn {
    display: inline-block;
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius);
    font-weight: 600;
    transition: var(--transition);
}

.card-btn:hover {
    background: var(--primary-dark);
    transform: translateX(4px);
}

.featured .card-btn {
    background: white;
    color: var(--primary);
}

/* Data Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.data-table thead {
    background: var(--primary);
    color: white;
}

.data-table th {
    padding: 16px;
    text-align: left;
    font-weight: 600;
}

.data-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border);
}

.data-table tbody tr:hover {
    background: var(--bg-secondary);
}

/* Membership Section */
.membership-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.membership-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.membership-text h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.membership-desc {
    font-size: 18px;
    margin-bottom: 32px;
    opacity: 0.95;
}

.membership-benefits {
    display: grid;
    gap: 20px;
}

.benefit-item {
    display: flex;
    gap: 16px;
    align-items: start;
}

.benefit-icon {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.benefit-text h4 {
    font-size: 18px;
    margin-bottom: 4px;
}

.benefit-text p {
    font-size: 14px;
    opacity: 0.9;
}

.membership-plans {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.plan-card {
    background: white;
    color: var(--text-primary);
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    position: relative;
    transition: var(--transition);
}

.plan-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.plan-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    background: var(--secondary);
    color: white;
    padding: 4px 16px;
    border-radius: var(--radius-lg);
    font-size: 12px;
    font-weight: 600;
}

.plan-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.plan-price {
    margin-bottom: 24px;
}

.price-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary);
}

.price-unit {
    font-size: 18px;
    color: var(--text-secondary);
}

.plan-features {
    list-style: none;
    margin-bottom: 24px;
}

.plan-features li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
}

.plan-features li:last-child {
    border-bottom: none;
}

.plan-note {
    text-align: center;
    font-size: 12px;
    color: var(--text-light);
    margin-top: 16px;
}

.membership-guarantee {
    text-align: center;
    padding: 24px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.membership-guarantee p {
    font-size: 14px;
    margin: 0;
}

/* Services Section */
.services-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.service-card {
    background: white;
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    text-align: center;
    text-decoration: none;
    transition: var(--transition);
    border: 2px solid transparent;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.service-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 20px;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Footer */
.modern-footer {
    background: var(--text-primary);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-col p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: 16px;
}

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

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

.footer-col a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-col a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

.back-to-top.visible {
    display: flex;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .section-title, .content-title {
        font-size: 32px;
    }
}

@media (max-width: 768px) {
    .header-container {
        height: 64px;
    }
    
    .header-actions .btn-link {
        display: none;
    }
    
    .modern-hero {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-search {
        flex-direction: column;
    }
    
    .search-btn {
        width: 100%;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        padding: 24px;
    }
    
    .report-grid {
        grid-template-columns: 1fr;
    }
    
    /* Membership responsive */
    .membership-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .membership-plans {
        grid-template-columns: 1fr;
    }
    
    .membership-text h2 {
        font-size: 28px;
    }
    
    /* Services responsive */
    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .section-title, .content-title {
        font-size: 28px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .report-card {
        padding: 24px;
    }
}