/* ========== WEEX 加密货币交易所 - 全局样式 ========== */

/* CSS 变量定义 */
:root {
    --color-primary: #f0b90b;
    --color-primary-dark: #d4a00a;
    --color-primary-light: #ffd700;
    --color-secondary: #1e2329;
    --color-dark-bg: #0b0e11;
    --color-dark-card: #181a20;
    --color-dark-card-hover: #1e2329;
    --color-text-primary: #eaecef;
    --color-text-secondary: #848e9c;
    --color-text-muted: #5e6673;
    --color-border: #2b3139;
    --color-border-light: #474d57;
    --color-success: #0ecb81;
    --color-danger: #f6465d;
    --color-info: #1e9cf0;
    --color-warning: #f0b90b;
    
    --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(240, 185, 11, 0.3);
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --max-width: 1200px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-dark-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

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

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

a:hover {
    color: var(--color-primary-light);
}

ul, ol {
    list-style: none;
}

button {
    font-family: var(--font-family);
    cursor: pointer;
    border: none;
    outline: none;
    background: none;
}

input, textarea, select {
    font-family: var(--font-family);
    outline: none;
}

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

/* ========== 导航栏 ========== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(11, 14, 17, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 2px;
}

.brand-logo {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: var(--color-dark-bg);
    font-size: 1.2rem;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
    background: rgba(240, 185, 11, 0.1);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-left: var(--spacing-md);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-xs);
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* ========== 按钮样式 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-dark-bg);
}

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

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

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

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

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

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
}

/* ========== Hero 区域 ========== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 var(--spacing-2xl);
    position: relative;
    overflow: hidden;
    background: radial-gradient(ellipse at top, rgba(240, 185, 11, 0.15) 0%, transparent 60%),
                radial-gradient(ellipse at bottom right, rgba(30, 156, 240, 0.1) 0%, transparent 50%),
                var(--color-dark-bg);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23f0b90b' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(240, 185, 11, 0.1);
    border: 1px solid rgba(240, 185, 11, 0.3);
    border-radius: 50px;
    color: var(--color-primary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
    animation: fadeInDown 0.8s ease;
}

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

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: rgba(24, 26, 32, 0.8);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.hero-stat-item {
    text-align: center;
}

.hero-stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.hero-stat-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* Hero 浮动图表装饰 */
.hero-chart-decoration {
    position: absolute;
    width: 300px;
    height: 300px;
    border: 1px solid rgba(240, 185, 11, 0.2);
    border-radius: var(--radius-xl);
    top: 20%;
    right: 5%;
    animation: float 6s ease-in-out infinite;
    z-index: 1;
    opacity: 0.5;
}

.hero-chart-decoration::after {
    content: '';
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
    height: 60%;
    background: linear-gradient(to top right, transparent 0%, transparent 30%, var(--color-primary) 30%, var(--color-primary) 35%, transparent 35%, transparent 50%, var(--color-success) 50%, var(--color-success) 55%, transparent 55%, transparent 70%, var(--color-info) 70%, var(--color-info) 75%, transparent 75%);
}

/* ========== 通用 Section 样式 ========== */
.section {
    padding: var(--spacing-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(240, 185, 11, 0.1);
    color: var(--color-primary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========== 核心特性区域 ========== */
.features {
    background: var(--color-dark-card);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-info) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

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

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(240, 185, 11, 0.2) 0%, rgba(240, 185, 11, 0.05) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: 1.8rem;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ========== 服务介绍区域 ========== */
.services {
    background: var(--color-dark-bg);
}

.service-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.service-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-dark-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.service-tab:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-light);
}

.service-tab.active {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-dark-bg);
    border-color: transparent;
}

.service-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.service-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.service-info p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.service-features-list {
    margin-bottom: var(--spacing-lg);
}

.service-features-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    color: var(--color-text-primary);
}

.service-features-list li::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: rgba(14, 203, 129, 0.2);
    color: var(--color-success);
    border-radius: 50%;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.service-image {
    background: linear-gradient(135deg, var(--color-dark-card) 0%, var(--color-secondary) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
}

.service-image img {
    border-radius: var(--radius-lg);
    margin: 0 auto;
}

/* ========== 交易对展示区域 ========== */
.markets {
    background: var(--color-dark-card);
}

.market-table-wrapper {
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.market-table {
    width: 100%;
    border-collapse: collapse;
}

.market-table thead {
    background: rgba(0, 0, 0, 0.2);
}

.market-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.market-table td {
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    font-size: 0.95rem;
}

.market-table tbody tr {
    transition: background var(--transition-fast);
}

.market-table tbody tr:hover {
    background: rgba(240, 185, 11, 0.05);
}

.coin-name {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    color: var(--color-text-primary);
}

.coin-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--color-dark-bg);
    font-size: 0.75rem;
}

.price-up {
    color: var(--color-success);
    font-weight: 600;
}

.price-down {
    color: var(--color-danger);
    font-weight: 600;
}

/* ========== 详细内容区 - 为什么选择我们 ========== */
.why-us {
    background: var(--color-dark-bg);
}

.why-us-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.why-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-dark-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.why-item:hover {
    border-color: var(--color-primary);
    transform: translateX(5px);
}

.why-icon {
    width: 50px;
    height: 50px;
    background: rgba(30, 156, 240, 0.15);
    color: var(--color-info);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.why-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.why-item p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* 安全区域 */
.security-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(30, 156, 240, 0.1) 0%, rgba(240, 185, 11, 0.05) 100%);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
}

.security-info h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.security-info p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.security-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.security-badge {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-dark-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.security-image {
    text-align: center;
}

.security-image img {
    max-width: 100%;
    border-radius: var(--radius-lg);
}

/* ========== 用户评价 ========== */
.testimonials {
    background: var(--color-dark-card);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial-card {
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-size: 4rem;
    color: rgba(240, 185, 11, 0.1);
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonial-content {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    font-size: 0.95rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-info) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-dark-bg);
    font-weight: 700;
}

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

.testimonial-title {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ========== 常见问题 FAQ ========== */
.faq {
    background: var(--color-dark-bg);
}

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

.faq-item {
    background: var(--color-dark-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: none;
    color: var(--color-text-primary);
    font-size: 1rem;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: rgba(240, 185, 11, 0.05);
}

.faq-icon {
    width: 24px;
    height: 24px;
    position: relative;
    transition: transform var(--transition-fast);
    flex-shrink: 0;
    margin-left: var(--spacing-sm);
}

.faq-icon::before,
.faq-icon::after {
    content: '';
    position: absolute;
    background: var(--color-primary);
    border-radius: 2px;
}

.faq-icon::before {
    width: 14px;
    height: 2px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.faq-icon::after {
    width: 2px;
    height: 14px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.faq-item.active .faq-icon::after {
    transform: translate(-50%, -50%) rotate(90deg);
    opacity: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-normal);
}

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

.faq-answer-inner {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ========== 行动号召 CTA ========== */
.cta {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    text-align: center;
    padding: var(--spacing-2xl) 0;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

.cta-content {
    position: relative;
    z-index: 2;
}

.cta h2 {
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    font-weight: 800;
    color: var(--color-dark-bg);
    margin-bottom: var(--spacing-md);
}

.cta p {
    font-size: 1.1rem;
    color: rgba(11, 14, 17, 0.8);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.cta .btn-primary:hover {
    background: #000;
    transform: translateY(-2px);
}

.cta .btn-secondary {
    background: transparent;
    border: 2px solid var(--color-dark-bg);
    color: var(--color-dark-bg);
}

.cta .btn-secondary:hover {
    background: var(--color-dark-bg);
    color: var(--color-primary);
}

/* ========== 页脚 ========== */
.site-footer {
    background: var(--color-dark-bg);
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-2xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}

.footer-brand .brand {
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--color-dark-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-dark-bg);
    transform: translateY(-2px);
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.footer-col ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-col ul li a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* ========== 内部页面通用样式 ========== */
.page-header {
    padding: 150px 0 var(--spacing-xl);
    background: radial-gradient(ellipse at top, rgba(240, 185, 11, 0.15) 0%, transparent 60%),
                var(--color-dark-bg);
    border-bottom: 1px solid var(--color-border);
}

.page-header-content {
    text-align: center;
}

.page-header h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-header p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
}

/* ========== 产品页面 ========== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

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

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

.product-image {
    height: 200px;
    background: linear-gradient(135deg, rgba(240, 185, 11, 0.2) 0%, rgba(30, 156, 240, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-primary);
    color: var(--color-dark-bg);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.product-body {
    padding: var(--spacing-lg);
}

.product-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.product-tagline {
    color: var(--color-primary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.product-desc {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.product-stats {
    display: flex;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.product-stat {
    flex: 1;
    text-align: center;
}

.product-stat-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
}

.product-stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* ========== 新闻列表页面 ========== */
.news-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-lg);
}

.news-card {
    background: var(--color-dark-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

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

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

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

.news-card:hover .news-image img {
    transform: scale(1.05);
}

.news-body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.news-cat {
    color: var(--color-primary);
    font-weight: 500;
}

.news-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

.news-excerpt {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.news-read-more {
    color: var(--color-primary);
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    align-self: flex-start;
}

.news-read-more:hover {
    gap: var(--spacing-sm);
}

/* 新闻分类筛选 */
.news-filter {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.filter-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-dark-card);
    border: 1px solid var(--color-border);
    border-radius: 50px;
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-primary);
    color: var(--color-dark-bg);
    border-color: var(--color-primary);
}

/* ========== 新闻详情页面 ========== */
.news-detail {
    padding: var(--spacing-xl) 0 var(--spacing-2xl);
}

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

.news-detail-header {
    margin-bottom: var(--spacing-xl);
}

.news-detail-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.news-detail-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: var(--spacing-md);
}

.news-detail-image {
    width: 100%;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}

.news-detail-content {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--color-text-primary);
}

.news-detail-content p {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-secondary);
}

.news-detail-content h2 {
    font-size: 1.3rem;
    font-weight: 600;
    margin: var(--spacing-xl) 0 var(--spacing-md);
    color: var(--color-text-primary);
}

.news-detail-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    color: var(--color-primary);
}

.news-detail-content ul,
.news-detail-content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-lg);
}

.news-detail-content ul li,
.news-detail-content ol li {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
    list-style-type: disc;
}

.news-detail-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-dark-card);
    border-radius: var(--radius-sm);
    margin: var(--spacing-lg) 0;
    color: var(--color-text-primary);
    font-style: italic;
}

/* 文章导航 */
.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.article-nav-item {
    padding: var(--spacing-md);
    background: var(--color-dark-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.article-nav-item:hover {
    border-color: var(--color-primary);
}

.article-nav-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.article-nav-title {
    font-size: 0.95rem;
    color: var(--color-text-primary);
    font-weight: 500;
}

/* ========== 关于页面 ========== */
.about-hero {
    padding: 120px 0 var(--spacing-2xl);
    background: radial-gradient(ellipse at top, rgba(240, 185, 11, 0.15) 0%, transparent 60%),
                var(--color-dark-bg);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    margin-bottom: var(--spacing-2xl);
}

.about-image {
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.about-text h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.about-text p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

/* 使命愿景 */
.mission-vision {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.mv-card {
    padding: var(--spacing-xl);
    background: var(--color-dark-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-normal);
}

.mv-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
}

.mv-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 2rem;
}

.mv-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.mv-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* 核心价值观 */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
}

.value-card {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--color-dark-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.value-card:hover {
    border-color: var(--color-primary);
    background: rgba(240, 185, 11, 0.05);
}

.value-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-primary);
    opacity: 0.3;
    margin-bottom: var(--spacing-sm);
}

.value-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.value-card p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* 团队介绍 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.team-card {
    text-align: center;
}

.team-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-info) 100%);
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-dark-bg);
}

.team-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.team-card .role {
    color: var(--color-primary);
    font-size: 0.9rem;
}

/* ========== 联系页面 ========== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.contact-info h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.contact-info > p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.contact-detail {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    background: var(--color-dark-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.contact-detail:hover {
    border-color: var(--color-primary);
}

.contact-detail-icon {
    width: 50px;
    height: 50px;
    background: rgba(240, 185, 11, 0.15);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-detail-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.contact-detail-content p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* 联系表单 */
.contact-form-wrapper {
    background: var(--color-dark-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.contact-form-wrapper h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 0.95rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--color-primary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23848e9c' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(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(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

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

/* 滚动显示动画 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .service-content,
    .security-section,
    .about-content,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .mission-vision {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-list {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--color-dark-bg);
        flex-direction: column;
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-list.open {
        display: flex;
    }
    
    .nav-link {
        padding: var(--spacing-sm) var(--spacing-md);
        width: 100%;
        text-align: center;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .nav-actions .btn-secondary {
        display: none;
    }
    
    .hero {
        padding-top: 100px;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-chart-decoration {
        display: none;
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .article-nav {
        grid-template-columns: 1fr;
    }
    
    .features-grid,
    .testimonials-grid,
    .why-us-grid {
        grid-template-columns: 1fr;
    }
    
    .market-table th:nth-child(3),
    .market-table td:nth-child(3),
    .market-table th:nth-child(4),
    .market-table td:nth-child(4) {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .brand {
        font-size: 1.2rem;
    }
    
    .product-grid,
    .news-list {
        grid-template-columns: 1fr;
    }
}

/* ========== 打印样式 ========== */
@media print {
    .site-header,
    .site-footer,
    .cta,
    .mobile-toggle {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* ========== 无障碍增强 ========== */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* 降低动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}