/* ============================================
   殴易官网 - 主样式表
   专业金融科技/加密货币交易所风格
   ============================================ */

/* ===== CSS 变量 ===== */
:root {
    --primary-color: #1a73e8;
    --primary-dark: #0d47a1;
    --primary-light: #4a9af5;
    --accent-color: #ffd700;
    --accent-gradient: linear-gradient(135deg, #ffd700 0%, #ffaa00 100%);
    --bg-dark: #0a0e27;
    --bg-darker: #050816;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-muted: rgba(255, 255, 255, 0.6);
    --border-color: rgba(255, 255, 255, 0.1);
    --success: #00c853;
    --warning: #ff9800;
    --danger: #ff5252;
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.3);
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
}

/* ===== 基础重置 ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent-color);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* ===== 容器 ===== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(5, 8, 22, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-brand .logo-icon {
    width: 40px;
    height: 40px;
    background: var(--accent-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 800;
    color: var(--bg-darker);
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.nav-brand .brand-text {
    background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    position: relative;
    padding: 10px 18px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 15px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.06);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

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

.btn-login {
    padding: 10px 20px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--accent-gradient);
    color: var(--bg-darker);
    font-weight: 700;
    font-size: 15px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.25);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 215, 0, 0.4);
    color: var(--bg-darker);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    background: transparent;
    color: var(--primary-light);
    font-weight: 600;
    font-size: 15px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--primary-color);
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--text-primary);
    transform: translateY(-2px);
}

/* 移动菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.menu-toggle span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero 区域 ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
    background: 
        radial-gradient(ellipse at top left, rgba(26, 115, 232, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(255, 215, 0, 0.1) 0%, transparent 50%),
        linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    animation: fadeInUp 1s ease-out;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(255, 215, 0, 0.12);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 100px;
    color: var(--accent-color);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
}

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

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #ffffff 0%, var(--primary-light) 50%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

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

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

.stat-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--accent-color);
    font-family: 'Noto Sans SC', monospace;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Hero 右侧 - 交易卡片 */
.hero-visual {
    position: relative;
    animation: fadeInRight 1s ease-out;
}

.trading-card {
    background: linear-gradient(145deg, rgba(26, 32, 70, 0.8), rgba(10, 14, 39, 0.9));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
}

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

.card-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.trend-badge {
    padding: 4px 12px;
    background: rgba(0, 200, 83, 0.15);
    color: var(--success);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
}

.coin-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.coin-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.coin-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(4px);
}

.coin-info {
    display: flex;
    align-items: center;
    gap: 14px;
}

.coin-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
}

.coin-icon.btc { background: linear-gradient(135deg, #f7931a, #e27a00); color: #fff; }
.coin-icon.eth { background: linear-gradient(135deg, #627eea, #4a5fcc); color: #fff; }
.coin-icon.usdt { background: linear-gradient(135deg, #26a17b, #1e8665); color: #fff; }

.coin-name {
    font-weight: 600;
    font-size: 15px;
}

.coin-symbol {
    font-size: 13px;
    color: var(--text-muted);
}

.coin-price {
    text-align: right;
}

.price-value {
    font-weight: 700;
    font-size: 16px;
}

.price-change {
    font-size: 13px;
    font-weight: 600;
}

.price-change.up { color: var(--success); }
.price-change.down { color: var(--danger); }

/* ===== 通用 Section ===== */
.section {
    padding: 100px 0;
    position: relative;
}

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

.section-title h2 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title p {
    font-size: 17px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.section-title .highlight {
    color: var(--accent-color);
    -webkit-text-fill-color: var(--accent-color);
}

/* ===== 特性区域 ===== */
.features {
    background: var(--bg-darker);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 36px 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.feature-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: rgba(255, 215, 0, 0.2);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(26, 115, 232, 0.2), rgba(255, 215, 0, 0.1));
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.7;
}

/* ===== 服务区域 ===== */
.services {
    background: var(--bg-dark);
}

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

.services-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.services-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.services-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 115, 232, 0.2) 0%, transparent 60%);
    border-radius: var(--radius-lg);
}

.services-content h2 {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.3;
}

.services-content .lead {
    font-size: 17px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
}

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

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

.service-item:hover {
    border-color: rgba(26, 115, 232, 0.4);
    background: var(--bg-card-hover);
}

.service-num {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: var(--accent-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 18px;
    color: var(--bg-darker);
}

.service-text h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
}

.service-text p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ===== 产品/交易对区域 ===== */
.products {
    background: var(--bg-darker);
}

.ticker-wrapper {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.ticker-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.2);
}

.ticker-tab {
    padding: 16px 28px;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 3px solid transparent;
}

.ticker-tab:hover {
    color: var(--text-primary);
}

.ticker-tab.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-gradient);
}

.ticker-table {
    width: 100%;
}

.ticker-header {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1.5fr 1.5fr 1fr;
    padding: 14px 24px;
    background: rgba(0, 0, 0, 0.2);
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ticker-row {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1.5fr 1.5fr 1fr;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
    align-items: center;
    transition: var(--transition);
}

.ticker-row:last-child {
    border-bottom: none;
}

.ticker-row:hover {
    background: rgba(255, 255, 255, 0.03);
}

.ticker-cell {
    font-size: 15px;
}

.ticker-cell.price {
    font-weight: 700;
    font-family: monospace;
}

.ticker-cell.change.up {
    color: var(--success);
    font-weight: 600;
}

.ticker-cell.change.down {
    color: var(--danger);
    font-weight: 600;
}

.ticker-cell.action .trade-btn {
    padding: 6px 18px;
    background: rgba(26, 115, 232, 0.15);
    border: 1px solid rgba(26, 115, 232, 0.4);
    color: var(--primary-light);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 13px;
    transition: var(--transition);
}

.ticker-cell.action .trade-btn:hover {
    background: var(--primary-color);
    color: #fff;
}

/* ===== 优势/安全区域 ===== */
.advantages {
    background: var(--bg-dark);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.advantage-card {
    display: flex;
    gap: 24px;
    padding: 36px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.advantage-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(255, 215, 0, 0.25);
    transform: translateY(-4px);
}

.advantage-icon {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.15), rgba(26, 115, 232, 0.15));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
}

.advantage-text h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
}

.advantage-text p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.7;
}

/* ===== FAQ 区域 ===== */
.faq {
    background: var(--bg-darker);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active {
    border-color: rgba(255, 215, 0, 0.3);
    background: rgba(255, 215, 0, 0.03);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 28px;
    background: transparent;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.02);
}

.faq-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    font-size: 18px;
    transition: transform 0.3s;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-inner {
    padding: 0 28px 24px;
    color: var(--text-muted);
    line-height: 1.8;
    font-size: 15px;
}

/* ===== CTA 区域 ===== */
.cta {
    position: relative;
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--bg-dark) 100%);
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 215, 0, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.cta::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(26, 115, 232, 0.2) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-content p {
    font-size: 17px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

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

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 60px;
}

.footer-brand .nav-brand {
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 24px;
}

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

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 18px;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--accent-gradient);
    border-color: transparent;
    color: var(--bg-darker);
    transform: translateY(-3px);
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 15px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 6px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

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

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

.footer-bottom-links a {
    color: var(--text-muted);
    font-size: 14px;
}

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

/* ===== 页面 Banner (内页) ===== */
.page-banner {
    position: relative;
    padding: 180px 0 100px;
    background: 
        radial-gradient(ellipse at center, rgba(26, 115, 232, 0.2) 0%, transparent 70%),
        linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    text-align: center;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.page-banner h1 {
    position: relative;
    z-index: 2;
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff, var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-banner p {
    position: relative;
    z-index: 2;
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.breadcrumb {
    position: relative;
    z-index: 2;
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--text-muted);
}

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

.breadcrumb .sep {
    margin: 0 10px;
    opacity: 0.5;
}

/* ===== About 页面 ===== */
.about-intro {
    padding: 80px 0;
    background: var(--bg-dark);
}

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

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-content h2 {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 24px;
}

.about-content p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.9;
    margin-bottom: 16px;
}

.mission-values {
    padding: 80px 0;
    background: var(--bg-darker);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.value-card {
    text-align: center;
    padding: 40px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.value-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-6px);
    border-color: rgba(255, 215, 0, 0.3);
}

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

.value-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.value-card p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.7;
}

/* ===== 数据统计 ===== */
.stats-bar {
    padding: 60px 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--bg-dark) 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stats-item h3 {
    font-size: 42px;
    font-weight: 800;
    color: var(--accent-color);
    margin-bottom: 8px;
    font-family: 'Noto Sans SC', monospace;
}

.stats-item p {
    font-size: 15px;
    color: var(--text-secondary);
}

/* ===== Contact 页面 ===== */
.contact-section {
    padding: 80px 0;
    background: var(--bg-dark);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-card {
    display: flex;
    gap: 20px;
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.contact-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(26, 115, 232, 0.3);
    transform: translateX(4px);
}

.contact-card-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    background: rgba(26, 115, 232, 0.15);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.contact-card-text h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 6px;
}

.contact-card-text p {
    font-size: 15px;
    color: var(--text-muted);
}

.contact-form {
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(26, 115, 232, 0.05);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

/* ===== News 页面 ===== */
.news-section {
    padding: 80px 0;
    background: var(--bg-dark);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.news-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.news-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(255, 215, 0, 0.2);
}

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

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .news-image img {
    transform: scale(1.08);
}

.news-category {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 14px;
    background: var(--accent-gradient);
    color: var(--bg-darker);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 700;
}

.news-body {
    padding: 24px;
}

.news-date {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.news-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.5;
    transition: var(--transition);
}

.news-card:hover h3 {
    color: var(--accent-color);
}

.news-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== News Detail 页面 ===== */
.news-detail {
    padding: 80px 0;
    background: var(--bg-dark);
}

.detail-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

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

.detail-header .news-category {
    position: static;
    display: inline-block;
    margin-bottom: 16px;
}

.detail-header h1 {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 20px;
}

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

.detail-cover {
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 40px;
}

.detail-content {
    font-size: 17px;
    line-height: 1.9;
    color: var(--text-secondary);
}

.detail-content p {
    margin-bottom: 20px;
}

.detail-content h2 {
    font-size: 24px;
    font-weight: 700;
    margin: 40px 0 16px;
    color: var(--text-primary);
}

.detail-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin: 32px 0 12px;
    color: var(--text-primary);
}

.detail-content ul,
.detail-content ol {
    margin: 16px 0;
    padding-left: 24px;
}

.detail-content li {
    margin-bottom: 10px;
    list-style: disc;
}

.detail-content blockquote {
    border-left: 4px solid var(--accent-color);
    padding: 20px 24px;
    margin: 24px 0;
    background: rgba(255, 215, 0, 0.05);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-style: italic;
}

/* ===== 返回顶部按钮 ===== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    color: var(--bg-darker);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 4px 20px rgba(255, 215, 0, 0.4);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 30px rgba(255, 215, 0, 0.6);
}

/* ===== 动画 ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .hero-title {
        font-size: 44px;
    }

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

    .services-wrapper {
        grid-template-columns: 1fr;
    }

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

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

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

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

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

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

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

    .ticker-header,
    .ticker-row {
        grid-template-columns: 1.5fr 1fr 1fr 1fr;
    }

    .ticker-cell.volume {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-actions {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .mobile-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(5, 8, 22, 0.98);
        backdrop-filter: blur(20px);
        z-index: 999;
        padding: 30px;
        transform: translateX(100%);
        transition: transform 0.4s ease;
    }

    .mobile-menu.active {
        transform: translateX(0);
    }

    .mobile-menu .nav-links {
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .mobile-menu .nav-link {
        padding: 16px 20px;
        font-size: 17px;
        border-radius: var(--radius-md);
    }

    .mobile-menu .nav-actions {
        display: flex;
        margin-top: 30px;
        flex-direction: column;
        gap: 12px;
    }

    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .hero-stats {
        gap: 24px;
    }

    .stat-value {
        font-size: 26px;
    }

    .section {
        padding: 60px 0;
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .page-banner {
        padding: 140px 0 70px;
    }

    .page-banner h1 {
        font-size: 32px;
    }

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

    .stats-item h3 {
        font-size: 32px;
    }

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

    .detail-header h1 {
        font-size: 26px;
    }

    .advantage-card {
        flex-direction: column;
        text-align: center;
    }

    .cta-content h2 {
        font-size: 32px;
    }

    .ticker-header,
    .ticker-row {
        grid-template-columns: 1.5fr 1fr 1fr;
        padding: 14px 16px;
    }

    .ticker-cell.volume,
    .ticker-cell.action {
        display: none;
    }

    .contact-form {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 30px;
    }

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

    .btn-primary,
    .btn-secondary {
        width: 100%;
    }

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

/* ===== 打印样式 ===== */
@media print {
    .navbar,
    .footer,
    .back-to-top,
    .menu-toggle {
        display: none;
    }

    body {
        background: #fff;
        color: #000;
    }
}

/* ===== 无障碍 ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
    border-radius: 4px;
}