:root {
    --primary: #6366F1;
    --primary-dark: #4F46E5;
    --primary-light: #818CF8;
    --secondary: #8B5CF6;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;
    
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-card: #1E293B;
    --bg-hover: #334155;
    
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    
    --border-color: #334155;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.3);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.4);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    --header-height: 64px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

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

a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--primary-light); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }
table { border-collapse: collapse; border-spacing: 0; }

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

.header-top-bar {
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary));
    padding: 8px 0;
    font-size: 0.8125rem;
}

.header-top-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.welcome-text { color: rgba(255,255,255,0.9); }

.top-right { display: flex; align-items: center; gap: 16px; }
.date-display { color: rgba(255,255,255,0.9); }
.top-link { color: rgba(255,255,255,0.9); transition: color var(--transition-fast); }
.top-link:hover { color: white; text-decoration: underline; }

.main-nav {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    height: var(--header-height);
    gap: 32px;
}

.nav-brand { flex-shrink: 0; }
.logo-link { display: flex; align-items: center; gap: 12px; }
.logo-icon { width: 40px; height: 40px; }
.logo-icon svg { width: 100%; height: 100%; }

.logo-text h1 {
    font-size: 1.125rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.logo-subtitle {
    font-size: 0.6875rem;
    color: var(--text-muted);
    display: block;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
}

.nav-item { position: relative; }

.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link:hover, .nav-item.active > .nav-link {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.arrow-icon { font-size: 0.625rem; transition: transform var(--transition-fast); }
.nav-item.dropdown:hover .arrow-icon { transform: rotate(180deg); }

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 200px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
    z-index: 100;
}

.nav-item.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    padding: 12px 16px;
    display: block;
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.dropdown-item:first-child { border-radius: var(--radius-md) var(--radius-md) 0 0; }
.dropdown-item:last-child { border-radius: 0 0 var(--radius-md) var(--radius-md); }

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

.search-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.search-toggle:hover { background: var(--bg-hover); color: var(--text-primary); }

.auth-btn {
    padding: 8px 20px;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

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

.auth-btn.secondary {
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.auth-btn.secondary:hover { background: var(--bg-hover); border-color: var(--primary-light); }

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
}

.mobile-menu-toggle span {
    display: block;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.search-bar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.search-bar.active { max-height: 80px; }

.search-form {
    display: flex;
    align-items: center;
    padding: 16px 0;
    gap: 12px;
}

.search-input {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.search-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2); }
.search-input::placeholder { color: var(--text-muted); }

.search-submit {
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-full);
    font-weight: 500;
}

.search-submit:hover { background: var(--primary-dark); }

.search-close {
    width: 36px;
    height: 36px;
    font-size: 1.5rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-close:hover { color: var(--text-primary); }

.breadcrumb { padding: 16px 0; }

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
}

.breadcrumb-item { color: var(--text-muted); }
.breadcrumb-item a:hover { color: var(--primary-light); }
.breadcrumb-item.active { color: var(--text-primary); }
.breadcrumb-item + .breadcrumb-item::before { content: '/'; margin-right: 8px; }

.hero-section {
    padding: 64px 0;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description { font-size: 1.125rem; color: var(--text-secondary); margin-bottom: 32px; line-height: 1.8; }

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 32px;
    padding: 24px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.stat-item { text-align: center; }
.stat-number { display: block; font-size: 2rem; font-weight: 700; color: var(--primary-light); }
.stat-label { font-size: 0.8125rem; color: var(--text-muted); }

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

.btn {
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-lg); }

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

.btn-lg { padding: 16px 36px; font-size: 1rem; }
.btn-sm { padding: 6px 16px; font-size: 0.8125rem; }
.btn-block { width: 100%; }

.chart-preview {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--bg-hover);
}

.chart-title { font-weight: 600; font-size: 0.9375rem; }
.chart-badge {
    padding: 4px 10px;
    background: var(--success);
    color: white;
    font-size: 0.75rem;
    border-radius: var(--radius-full);
    animation: pulse 2s infinite;
}

.chart-area { padding: 20px; height: 160px; }
.mini-chart { width: 100%; height: 100%; }

.chart-legend {
    display: flex;
    justify-content: center;
    gap: 24px;
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

.legend-item { display: flex; align-items: center; gap: 8px; font-size: 0.8125rem; color: var(--text-secondary); }
.legend-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); }
.legend-dot.dot-purple { background: var(--secondary); }

.section { padding: 80px 0; }

.section-header { text-align: center; margin-bottom: 48px; }
.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle { font-size: 1rem; color: var(--text-secondary); margin-bottom: 16px; }
.update-time { font-size: 0.875rem; color: var(--text-muted); }

.tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.tab {
    padding: 10px 24px;
    border-radius: var(--radius-full);
    font-size: 0.9375rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
}

.tab:hover { background: var(--bg-hover); color: var(--text-primary); }
.tab.active { background: var(--primary); color: white; border-color: var(--primary); }

.recommendations-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.recommendation-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.recommendation-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.recommendation-card.featured { border-color: var(--warning); }

.card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); }
.recommendation-card:hover .card-image img { transform: scale(1.08); }

.card-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    color: white;
}

.badge-news { background: var(--info); }
.badge-ai { background: var(--secondary); }
.badge-trend { background: var(--success); }

.featured-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    background: var(--warning);
    color: white;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
}

.card-content { padding: 20px; }

.card-title {
    font-size: 1.0625rem;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-title:hover { color: var(--primary-light); }
.card-excerpt { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.card-meta { display: flex; align-items: center; gap: 16px; font-size: 0.8125rem; color: var(--text-muted); }
.card-meta svg { vertical-align: middle; }

.section-footer { text-align: center; }

.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--transition-fast);
}

.chart-card:hover { border-color: var(--primary); box-shadow: var(--shadow-lg); }

.chart-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.chart-card-title { font-size: 1rem; font-weight: 600; }
.chart-controls { display: flex; gap: 4px; }

.chart-btn {
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.chart-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.chart-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

.chart-container { height: 260px; }
.chart-container canvas { width: 100% !important; height: 100% !important; }

.data-preview-table {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: var(--bg-hover);
}

.table-header h3 { font-size: 1rem; font-weight: 600; }
.table-actions { display: flex; gap: 8px; }

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

.data-table { width: 100%; }
.data-table th, .data-table td { padding: 16px 24px; text-align: left; border-bottom: 1px solid var(--border-color); }
.data-table th { background: var(--bg-hover); font-weight: 600; font-size: 0.875rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }
.data-table td { font-size: 0.9375rem; }
.data-table tbody tr { transition: background var(--transition-fast); }
.data-table tbody tr:hover { background: var(--bg-hover); }

.table-link { color: var(--primary-light); font-weight: 500; }
.table-link:hover { color: var(--primary); text-decoration: underline; }

.accuracy { padding: 4px 12px; border-radius: var(--radius-full); font-size: 0.8125rem; font-weight: 500; }
.accuracy.high { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.accuracy.medium { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.accuracy.low { background: rgba(239, 68, 68, 0.1); color: var(--error); }

.hot-badge { padding: 4px 10px; border-radius: var(--radius-full); font-size: 0.75rem; font-weight: 500; }
.hot-badge.hot { background: rgba(239, 68, 68, 0.1); color: var(--error); }
.hot-badge.new { background: rgba(59, 130, 246, 0.1); color: var(--info); }
.hot-badge.normal { background: rgba(148, 163, 184, 0.1); color: var(--text-secondary); }

.experts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }

.expert-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    text-align: center;
    transition: all var(--transition-normal);
}

.expert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); border-color: var(--primary); }

.expert-avatar { position: relative; width: 80px; height: 80px; margin: 0 auto 16px; }
.expert-avatar img { width: 100%; height: 100%; border-radius: var(--radius-full); object-fit: cover; border: 3px solid var(--border-color); }

.expert-rank {
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    color: white;
}

.rank-1 { background: linear-gradient(135deg, #FFD700, #FFA500); }
.rank-2 { background: linear-gradient(135deg, #C0C0C0, #A0A0A0); }
.rank-3 { background: linear-gradient(135deg, #CD7F32, #B8860B); }

.expert-name { font-size: 1.125rem; font-weight: 600; margin-bottom: 4px; }
.expert-title { font-size: 0.875rem; color: var(--primary-light); margin-bottom: 8px; }
.expert-desc { font-size: 0.8125rem; color: var(--text-secondary); margin-bottom: 16px; }

.expert-stats { display: flex; justify-content: center; gap: 24px; margin-bottom: 16px; }
.expert-stat { text-align: center; }
.expert-stat .stat-val { display: block; font-size: 1rem; font-weight: 600; color: var(--primary-light); }
.expert-stat .stat-label { font-size: 0.75rem; color: var(--text-muted); }

.expert-badges { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; }

.badge { padding: 4px 10px; border-radius: var(--radius-full); font-size: 0.75rem; font-weight: 500; }
.badge-gold { background: rgba(255, 215, 0, 0.1); color: #FFD700; }
.badge-silver { background: rgba(192, 192, 192, 0.1); color: #C0C0C0; }
.badge-bronze { background: rgba(205, 127, 50, 0.1); color: #CD7F32; }
.badge-verified { background: rgba(16, 185, 129, 0.1); color: var(--success); }

.forum-list { display: flex; flex-direction: column; gap: 16px; margin-bottom: 40px; }

.forum-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    transition: all var(--transition-fast);
}

.forum-item:hover { border-color: var(--primary); box-shadow: var(--shadow-md); }

.forum-item-title { font-size: 1.0625rem; font-weight: 600; margin-bottom: 8px; }
.forum-item-title a:hover { color: var(--primary-light); }
.forum-item-excerpt { font-size: 0.875rem; color: var(--text-secondary); margin-bottom: 12px; line-height: 1.6; }

.forum-item-meta { display: flex; align-items: center; gap: 16px; font-size: 0.8125rem; color: var(--text-muted); flex-wrap: wrap; }

.forum-category {
    padding: 2px 10px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-light);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
}

.forum-stats { display: flex; align-items: center; gap: 12px; }
.forum-stats svg { vertical-align: middle; }

.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

.gallery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 3/2;
    cursor: pointer;
}

.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); }
.gallery-item:hover img { transform: scale(1.08); }

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: white;
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.gallery-item:hover .gallery-overlay { transform: translateY(0); }
.gallery-overlay h4 { font-size: 1rem; font-weight: 600; }

.feedback-slider { position: relative; overflow: hidden; margin-bottom: 32px; }
.feedback-track { display: flex; gap: 24px; transition: transform var(--transition-normal); }

.feedback-card {
    flex: 0 0 calc(25% - 18px);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.feedback-rating { color: #FFD700; font-size: 1rem; margin-bottom: 12px; }
.feedback-text { font-size: 0.9375rem; color: var(--text-secondary); margin-bottom: 20px; line-height: 1.7; }

.feedback-author { display: flex; align-items: center; gap: 12px; }
.feedback-avatar { width: 44px; height: 44px; border-radius: var(--radius-full); overflow: hidden; }
.feedback-avatar img { width: 100%; height: 100%; object-fit: cover; }

.feedback-name { display: block; font-size: 0.9375rem; }
.feedback-role { font-size: 0.75rem; color: var(--text-muted); }

.feedback-controls { display: flex; align-items: center; justify-content: center; gap: 16px; }
.feedback-btn { width: 40px; height: 40px; border-radius: var(--radius-full); background: var(--bg-card); border: 1px solid var(--border-color); display: flex; align-items: center; justify-content: center; font-size: 1.25rem; transition: all var(--transition-fast); }
.feedback-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }

.feedback-dots { display: flex; gap: 8px; }
.feedback-dot { width: 10px; height: 10px; border-radius: var(--radius-full); background: var(--border-color); cursor: pointer; transition: all var(--transition-fast); }
.feedback-dot.active { background: var(--primary); width: 24px; }

.feedback-cta { text-align: center; }

.sync-features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }

.sync-feature {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition-fast);
}

.sync-feature:hover { border-color: var(--primary); transform: translateY(-4px); }

.sync-icon { width: 64px; height: 64px; margin: 0 auto 16px; color: var(--primary-light); }
.sync-feature h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 10px; }
.sync-feature p { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.7; }

.sync-info-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.sync-info-box h4 { font-size: 1.125rem; font-weight: 600; margin-bottom: 12px; }
.sync-info-box p { font-size: 0.9375rem; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.8; }

.sync-features-list { padding-left: 0; }
.sync-features-list li { padding: 8px 0; padding-left: 28px; position: relative; font-size: 0.9375rem; color: var(--text-secondary); }
.sync-features-list li::before { content: '✓'; position: absolute; left: 0; color: var(--success); font-weight: 600; }

.source-info-content { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 32px; }

.source-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    text-align: center;
}

.source-icon { width: 48px; height: 48px; margin: 0 auto 16px; color: var(--primary-light); }
.source-card h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 12px; }
.source-card p { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.7; }

.source-disclaimer {
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
}

.source-disclaimer p { font-size: 0.875rem; color: var(--warning); line-height: 1.7; }

.main-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 64px 0 32px;
}

.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px; margin-bottom: 48px; }

.footer-title { font-size: 1rem; font-weight: 600; margin-bottom: 20px; color: var(--text-primary); }
.footer-text { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 20px; }

.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 0.875rem; color: var(--text-secondary); transition: color var(--transition-fast); }
.footer-links a:hover { color: var(--primary-light); }
.footer-links li span { font-size: 0.875rem; color: var(--text-secondary); }

.footer-social { display: flex; gap: 12px; }
.social-link { width: 40px; height: 40px; border-radius: var(--radius-full); background: var(--bg-hover); display: flex; align-items: center; justify-content: center; color: var(--text-secondary); transition: all var(--transition-fast); }
.social-link:hover { background: var(--primary); color: white; }

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom-left p { font-size: 0.875rem; color: var(--text-secondary); }
.footer-sub { font-size: 0.75rem; color: var(--text-muted); margin-top: 4px; }

.footer-bottom-right { display: flex; gap: 24px; }
.footer-link { font-size: 0.875rem; color: var(--text-secondary); }
.footer-link:hover { color: var(--primary-light); }

.auth-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.auth-modal.active { display: flex; }

.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(4px); }

.modal-content {
    position: relative;
    width: 100%;
    max-width: 440px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
    margin: 20px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from { opacity: 0; transform: translateY(-20px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    font-size: 1.5rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.modal-close:hover { background: var(--bg-hover); color: var(--text-primary); }

.auth-title { font-size: 1.5rem; font-weight: 700; text-align: center; margin-bottom: 8px; }
.auth-subtitle { text-align: center; color: var(--text-muted); font-size: 0.875rem; margin-bottom: 28px; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.875rem; font-weight: 500; margin-bottom: 8px; color: var(--text-secondary); }

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.form-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15); }
.form-input::placeholder { color: var(--text-muted); }

.password-input { position: relative; }
.password-input .form-input { padding-right: 48px; }

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.toggle-password:hover { color: var(--text-primary); }

.form-options { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }

.checkbox-label { display: flex; align-items: center; gap: 8px; font-size: 0.875rem; color: var(--text-secondary); cursor: pointer; }
.checkbox-label input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--primary); }

.forgot-link { font-size: 0.875rem; color: var(--primary-light); }
.forgot-link:hover { text-decoration: underline; }

.auth-divider { text-align: center; margin: 24px 0; position: relative; }
.auth-divider::before { content: ''; position: absolute; top: 50%; left: 0; right: 0; height: 1px; background: var(--border-color); }
.auth-divider span { position: relative; background: var(--bg-card); padding: 0 16px; font-size: 0.875rem; color: var(--text-muted); }

.social-auth { display: flex; justify-content: center; gap: 16px; margin-bottom: 24px; }
.social-btn { width: 48px; height: 48px; border-radius: var(--radius-full); background: var(--bg-primary); border: 1px solid var(--border-color); display: flex; align-items: center; justify-content: center; color: var(--text-secondary); transition: all var(--transition-fast); }
.social-btn:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--primary); }

.auth-switch { text-align: center; font-size: 0.875rem; color: var(--text-muted); }
.auth-switch a { color: var(--primary-light); font-weight: 500; }
.auth-switch a:hover { text-decoration: underline; }

.captcha-group { display: flex; gap: 12px; }
.captcha-image {
    min-width: 90px;
    height: 44px;
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 6px;
    color: var(--primary-light);
    cursor: pointer;
    user-select: none;
}

.hidden { display: none !important; }

.toast-container { position: fixed; top: 20px; right: 20px; z-index: 3000; display: flex; flex-direction: column; gap: 8px; }

.toast {
    padding: 14px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 0.9375rem;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: toastSlideIn 0.3s ease;
    max-width: 360px;
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--error); }
.toast.info { border-left: 4px solid var(--info); }
.toast.warning { border-left: 4px solid var(--warning); }

@keyframes toastSlideIn {
    from { opacity: 0; transform: translateX(100%); }
    to { opacity: 1; transform: translateX(0); }
}

.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: all var(--transition-normal);
    z-index: 1000;
}

.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--primary-dark); transform: translateY(-4px); }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

.animate-fadeInUp { animation: fadeInUp 0.6s ease forwards; }

@media (max-width: 1200px) {
    .hero-title { font-size: 2.5rem; }
    .section-title { font-size: 2rem; }
    .recommendations-grid { grid-template-columns: repeat(2, 1fr); }
    .experts-grid { grid-template-columns: repeat(2, 1fr); }
    .feedback-card { flex: 0 0 calc(33.333% - 16px); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .header-top-bar { display: none; }
    
    .nav-wrapper { gap: 16px; }
    
    .logo-text h1 { font-size: 1rem; }
    .logo-subtitle { display: none; }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 20px;
        gap: 8px;
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
        z-index: 999;
        overflow-y: auto;
    }
    
    .nav-menu.active { transform: translateX(0); }
    
    .nav-link { font-size: 1.0625rem; padding: 12px 16px; }
    .dropdown-menu { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; background: var(--bg-hover); border-radius: var(--radius-md); margin-top: 4px; display: none; }
    .nav-item.dropdown.open .dropdown-menu { display: block; }
    
    .auth-btn { display: none; }
    .mobile-menu-toggle { display: flex; }
    
    .hero-content { grid-template-columns: 1fr; gap: 40px; }
    .hero-title { font-size: 2rem; }
    .hero-stats { flex-direction: column; gap: 16px; }
    .hero-actions { flex-direction: column; }
    
    .recommendations-grid { grid-template-columns: 1fr; }
    .charts-grid { grid-template-columns: 1fr; }
    .experts-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .sync-features { grid-template-columns: 1fr; }
    .source-info-content { grid-template-columns: 1fr; }
    
    .feedback-card { flex: 0 0 calc(50% - 12px); }
    
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
    .footer-bottom-right { justify-content: center; }
    
    .section { padding: 48px 0; }
    .section-title { font-size: 1.5rem; }
    
    .modal-content { padding: 24px; }
}

@media (max-width: 320px) {
    html { font-size: 14px; }
    .container { padding: 0 12px; }
    .hero-title { font-size: 1.75rem; }
    .gallery-grid { grid-template-columns: 1fr; }
    .feedback-card { flex: 0 0 100%; }
}