:root {
    --bg-dark: #0a0a0f;
    --bg-darker: #050508;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a25;
    --gold-primary: #d4af37;
    --gold-light: #f4d03f;
    --gold-dark: #b8941f;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    --border-color: #2a2a35;
    --gradient-gold: linear-gradient(135deg, #d4af37 0%, #f4d03f 50%, #d4af37 100%);
    --shadow-gold: 0 0 30px rgba(212, 175, 55, 0.3);
    --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.5);
    --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: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-dark);
    overflow-x: hidden;
}

.bg-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(212, 175, 55, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

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

.header {
    position: sticky;
    top: 0;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
}

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

.logo-icon {
    font-size: 36px;
    filter: drop-shadow(0 0 10px rgba(212, 175, 55, 0.5));
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-size: 22px;
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-sub {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 2px;
}

.nav {
    display: flex;
    gap: 40px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 15px;
    position: relative;
    transition: var(--transition);
    padding: 8px 0;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-gold);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--gold-primary);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 100%;
}

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

.search-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.search-btn:hover {
    border-color: var(--gold-primary);
    color: var(--gold-primary);
}

.login-btn,
.register-btn {
    padding: 10px 24px;
    border-radius: 10px;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.login-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.login-btn:hover {
    border-color: var(--gold-primary);
    color: var(--gold-primary);
}

.register-btn {
    background: var(--gradient-gold);
    border: none;
    color: var(--bg-dark);
    font-weight: 600;
}

.register-btn:hover {
    box-shadow: var(--shadow-gold);
    transform: translateY(-2px);
}

.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(--gold-primary);
    transition: var(--transition);
}

.hero {
    position: relative;
    padding: 100px 0;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.3);
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 13px;
    color: var(--gold-primary);
    margin-bottom: 30px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--gold-primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { 
        opacity: 1;
        box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.7);
    }
    50% { 
        opacity: 0.8;
        box-shadow: 0 0 0 10px rgba(212, 175, 55, 0);
    }
}

.hero-title {
    margin-bottom: 24px;
}

.title-line {
    display: block;
    font-size: 60px;
    font-weight: 900;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    margin-bottom: 8px;
}

.title-highlight {
    display: block;
    font-size: 32px;
    font-weight: 500;
    color: var(--text-primary);
}

.hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 36px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 50px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-gold);
    color: var(--bg-dark);
}

.btn-primary:hover {
    box-shadow: var(--shadow-gold);
    transform: translateY(-3px);
}

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

.btn-outline:hover {
    border-color: var(--gold-primary);
    color: var(--gold-primary);
}

.btn-large {
    padding: 18px 40px;
    font-size: 18px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: 16px;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--gold-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-gold);
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.stat-trend {
    font-size: 12px;
    font-weight: 600;
}

.stat-trend.up {
    color: #00ff88;
}

.stat-trend.down {
    color: #ff4757;
}

.hero-visual {
    position: relative;
    z-index: 1;
}

.visual-card {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.visual-card img {
    width: 100%;
    display: block;
}

.visual-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1) 0%, transparent 100%);
}

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

.section-icon {
    font-size: 48px;
    margin-bottom: 16px;
    filter: drop-shadow(0 0 20px rgba(212, 175, 55, 0.3));
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.data-section,
.analysis-section,
.forum-section,
.features-section {
    padding: 100px 0;
    position: relative;
}

.data-section {
    background: var(--bg-darker);
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.data-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 28px;
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
}

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

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.05) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition);
}

.data-card:hover .card-glow {
    opacity: 1;
}

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

.card-icon {
    font-size: 36px;
}

.card-badge {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.card-badge.up {
    background: rgba(0, 255, 136, 0.1);
    color: #00ff88;
    border: 1px solid rgba(0, 255, 136, 0.3);
}

.card-badge.down {
    background: rgba(255, 71, 87, 0.1);
    color: #ff4757;
    border: 1px solid rgba(255, 71, 87, 0.3);
}

.card-title {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 12px;
    font-weight: 500;
}

.card-value {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.card-chart {
    height: 60px;
    margin-bottom: 16px;
}

.chart-line svg {
    width: 100%;
    height: 100%;
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 6px;
    height: 100%;
}

.chart-bars .bar {
    flex: 1;
    background: var(--gradient-gold);
    border-radius: 4px 4px 0 0;
    transition: var(--transition);
    opacity: 0.6;
}

.data-card:hover .chart-bars .bar {
    opacity: 1;
}

.chart-circle {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chart-circle svg {
    width: 80px;
    height: 80px;
    transform: rotate(-90deg);
}

.circle-bg {
    fill: none;
    stroke: var(--border-color);
    stroke-width: 3;
}

.circle-fill {
    fill: none;
    stroke: var(--gold-primary);
    stroke-width: 3;
    stroke-linecap: round;
}

.circle-text {
    position: absolute;
    font-size: 18px;
    font-weight: 700;
    color: var(--gold-primary);
}

.card-footer {
    text-align: right;
}

.update-time {
    font-size: 12px;
    color: var(--text-muted);
}

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

.analysis-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
}

.analysis-card:hover {
    border-color: var(--gold-primary);
    transform: translateY(-10px);
    box-shadow: var(--shadow-gold);
}

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

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.analysis-card:hover .card-image img {
    transform: scale(1.1);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 0%, rgba(10, 10, 15, 0.8) 100%);
}

.card-category {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--gradient-gold);
    color: var(--bg-dark);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.card-body {
    padding: 24px;
}

.card-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 16px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-muted);
}

.analysis-card .card-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.card-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--gold-primary);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.card-link:hover {
    gap: 12px;
}

.forum-section {
    background: var(--bg-darker);
}

.forum-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.forum-item {
    display: flex;
    gap: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: 16px;
    transition: var(--transition);
}

.forum-item:hover {
    border-color: var(--gold-primary);
    transform: translateX(10px);
    box-shadow: var(--shadow-gold);
}

.forum-avatar {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: var(--gradient-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--bg-dark);
    flex-shrink: 0;
}

.forum-content {
    flex: 1;
}

.forum-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.author-name {
    font-weight: 600;
    color: var(--text-primary);
}

.forum-tag {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    background: rgba(212, 175, 55, 0.1);
    color: var(--gold-primary);
    border: 1px solid rgba(212, 175, 55, 0.3);
}

.forum-tag.hot {
    background: rgba(255, 71, 87, 0.1);
    color: #ff4757;
    border-color: rgba(255, 71, 87, 0.3);
}

.post-time {
    font-size: 13px;
    color: var(--text-muted);
    margin-left: auto;
}

.forum-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.forum-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.forum-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.forum-tags {
    display: flex;
    gap: 8px;
}

.forum-tags .tag {
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    background: var(--bg-darker);
    color: var(--text-muted);
}

.forum-stats {
    display: flex;
    gap: 20px;
}

.forum-stats .stat {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-muted);
}

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

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--gold-primary);
    transform: translateY(-10px);
    box-shadow: var(--shadow-gold);
}

.feature-icon {
    font-size: 56px;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 20px rgba(212, 175, 55, 0.3));
}

.feature-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.cta-section {
    padding: 120px 0;
    background: var(--bg-darker);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1000px;
    height: 1000px;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-icon {
    font-size: 64px;
    margin-bottom: 24px;
    filter: drop-shadow(0 0 30px rgba(212, 175, 55, 0.5));
}

.cta-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-desc {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    padding: 80px 0 40px;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo .logo-icon {
    font-size: 32px;
}

.footer-logo .logo-text {
    font-size: 24px;
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
}

.social-link:hover {
    border-color: var(--gold-primary);
    color: var(--gold-primary);
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 24px;
}

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

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--gold-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.copyright {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    font-size: 14px;
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.footer-legal a:hover {
    color: var(--gold-primary);
}

@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-visual {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .data-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .analysis-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav,
    .header-right {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .title-line {
        font-size: 42px;
    }
    
    .title-highlight {
        font-size: 24px;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .data-grid,
    .analysis-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .forum-item {
        flex-direction: column;
        text-align: center;
    }
    
    .forum-footer {
        flex-direction: column;
        gap: 12px;
    }
    
    .post-time {
        margin-left: 0;
    }
    
    .cta-title {
        font-size: 36px;
    }
    
    .cta-actions {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .stat-card {
        padding: 16px;
    }
    
    .stat-value {
        font-size: 24px;
    }
}