/* ========================================
   唯客交易所 - 全局样式表
   ======================================== */

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

:root {
    --primary-color: #00d4ff;
    --primary-dark: #0099cc;
    --secondary-color: #6366f1;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --dark-bg: #0a0e1a;
    --dark-bg-2: #111827;
    --dark-bg-3: #1f2937;
    --text-primary: #ffffff;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #6366f1 100%);
    --gradient-dark: linear-gradient(135deg, #0a0e1a 0%, #1a1f35 100%);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.5);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

/* ========================================
   导航栏
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: var(--transition);
}

.site-header.scrolled {
    background: rgba(10, 14, 26, 0.95);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    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-weight: 700;
    font-size: 1.25rem;
}

.nav-brand .brand-logo {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
}

.nav-brand .brand-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    white-space: nowrap;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.45);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(0, 212, 255, 0.05);
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.05rem;
}

.btn-block {
    display: block;
    width: 100%;
}

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

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

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

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

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 24px 80px;
    overflow: hidden;
    background: var(--gradient-dark);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.25);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--primary-color);
    margin-bottom: 24px;
}

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

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero h1 .gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.8;
    max-width: 560px;
}

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

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 560px;
}

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

.stat-number {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.hero-visual {
    animation: fadeInRight 0.8s ease-out;
}

.hero-visual-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    max-width: 520px;
    margin-left: auto;
}

.hero-image {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
    object-fit: cover;
    box-shadow: var(--shadow-xl);
}

.floating-card {
    position: absolute;
    background: rgba(31, 41, 55, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-lg);
    animation: float 6s ease-in-out infinite;
}

.floating-card.card-1 {
    top: 10%;
    left: -20%;
    animation-delay: 0s;
}

.floating-card.card-2 {
    bottom: 15%;
    right: -10%;
    animation-delay: 2s;
}

.floating-card.card-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.floating-card.card-1 .card-icon {
    background: rgba(16, 185, 129, 0.2);
}

.floating-card.card-2 .card-icon {
    background: rgba(245, 158, 11, 0.2);
}

.floating-card.card-info strong {
    display: block;
    font-size: 1.1rem;
}

.floating-card.card-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ========================================
   通用 Section 样式
   ======================================== */
.section {
    padding: 100px 24px;
    position: relative;
}

.section-alt {
    background: var(--dark-bg-2);
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.section-header h2 .gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   核心特性 Features
   ======================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--dark-bg-3);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-md);
    padding: 40px 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 255, 0.2);
    box-shadow: var(--shadow-lg);
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
}

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

/* ========================================
   服务介绍 Services
   ======================================== */
.services-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.services-content h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.3;
}

.services-content p {
    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;
    align-items: flex-start;
    padding: 20px;
    background: var(--dark-bg-3);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.04);
    transition: var(--transition);
}

.service-item:hover {
    border-color: rgba(0, 212, 255, 0.15);
    transform: translateX(8px);
}

.service-number {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
}

.service-item-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.service-item-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0;
}

.services-image-wrapper {
    position: relative;
}

.services-image {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

/* ========================================
   安全区域
   ======================================== */
.security-section {
    padding: 100px 24px;
    background: var(--dark-bg-2);
    position: relative;
    overflow: hidden;
}

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

.security-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--dark-bg-3);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: var(--transition);
}

.security-card:hover {
    border-color: rgba(0, 212, 255, 0.25);
    transform: translateY(-4px);
}

.security-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.security-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

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

/* ========================================
   交易品种
   ======================================== */
.trading-section {
    padding: 100px 24px;
}

.trading-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--dark-bg-3);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.trading-table thead {
    background: rgba(0, 212, 255, 0.05);
}

.trading-table th {
    padding: 18px 24px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.trading-table td {
    padding: 18px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 0.95rem;
}

.trading-table tbody tr {
    transition: var(--transition);
}

.trading-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

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

.coin-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
}

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

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

/* ========================================
   行动号召 CTA
   ======================================== */
.cta-section {
    padding: 100px 24px;
    position: relative;
    background: var(--gradient-dark);
    overflow: hidden;
}

.cta-section::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='%2300d4ff' fill-opacity='0.05'%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");
    opacity: 0.5;
}

.cta-container {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-content {
    background: rgba(31, 41, 55, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: 60px 40px;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ========================================
   常见问题 FAQ
   ======================================== */
.faq-section {
    padding: 100px 24px;
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.faq-question {
    width: 100%;
    padding: 24px 0;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition);
    margin-left: 16px;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
    background: var(--primary-color);
    color: var(--dark-bg);
}

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

.faq-item.active .faq-answer {
    max-height: 300px;
    padding-bottom: 24px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   页脚
   ======================================== */
.site-footer {
    background: var(--dark-bg-2);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 80px 24px 32px;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 64px;
}

.footer-brand {
    max-width: 320px;
}

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

.footer-brand p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 0.9rem;
    margin-bottom: 24px;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--dark-bg-3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 1.1rem;
}

.footer-social a:hover {
    background: var(--gradient-primary);
    transform: translateY(-3px);
}

.footer-column h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

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

.footer-column ul a:hover {
    color: var(--primary-color);
    padding-left: 4px;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

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

.footer-bottom-links a {
    color: var(--text-muted);
    font-size: 0.85rem;
    transition: var(--transition);
}

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

/* ========================================
   页面 Banner（内页通用）
   ======================================== */
.page-banner {
    padding: 160px 24px 100px;
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.page-banner h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.page-banner p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.breadcrumb {
    margin-top: 24px;
    font-size: 0.9rem;
    color: var(--text-muted);
    position: relative;
    z-index: 1;
}

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

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

.breadcrumb span {
    margin: 0 8px;
}

/* ========================================
   关于页面
   ======================================== */
.about-intro {
    padding: 80px 24px;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

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

.about-content h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.about-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.mission-vision {
    padding: 80px 24px;
    background: var(--dark-bg-2);
}

.mv-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.mv-card {
    background: var(--dark-bg-3);
    padding: 48px 40px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.06);
    text-align: center;
}

.mv-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.mv-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

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

.team-section {
    padding: 80px 24px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.team-card {
    text-align: center;
    background: var(--dark-bg-3);
    border-radius: var(--radius-md);
    padding: 32px 20px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: var(--transition);
}

.team-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 255, 0.2);
}

.team-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 0 auto 20px;
    object-fit: cover;
}

.team-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 4px;
}

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

/* ========================================
   联系页面
   ======================================== */
.contact-section {
    padding: 80px 24px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
}

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

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

.contact-item-icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-item-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-item-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0;
}

.contact-form-wrapper {
    background: var(--dark-bg-3);
    padding: 48px 40px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    background: var(--dark-bg-2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    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);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

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

/* ========================================
   新闻页面
   ======================================== */
.news-section {
    padding: 80px 24px;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    max-width: 1400px;
    margin: 0 auto;
}

.news-card {
    background: var(--dark-bg-3);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: var(--transition);
    cursor: pointer;
}

.news-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 255, 0.2);
    box-shadow: var(--shadow-lg);
}

.news-thumb {
    width: 100%;
    height: 220px;
    overflow: hidden;
}

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

.news-card:hover .news-thumb img {
    transform: scale(1.1);
}

.news-body {
    padding: 28px;
}

.news-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 12px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.news-meta .tag {
    color: var(--primary-color);
    font-weight: 600;
}

.news-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.5;
    transition: var(--transition);
}

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

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

.news-pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 48px;
}

.news-pagination a,
.news-pagination span {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-bg-3);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 8px;
    font-weight: 600;
    transition: var(--transition);
}

.news-pagination a:hover,
.news-pagination .active {
    background: var(--gradient-primary);
    border-color: transparent;
}

/* ========================================
   新闻详情页
   ======================================== */
.news-detail {
    padding: 60px 24px 80px;
    max-width: 900px;
    margin: 0 auto;
}

.news-detail-header {
    text-align: center;
    margin-bottom: 40px;
}

.news-detail-header .news-meta {
    justify-content: center;
    margin-bottom: 16px;
}

.news-detail-header h1 {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1.4;
}

.news-detail-image {
    width: 100%;
    height: 400px;
    border-radius: var(--radius-md);
    object-fit: cover;
    margin-bottom: 40px;
}

.news-detail-content {
    color: var(--text-secondary);
    line-height: 2;
    font-size: 1.05rem;
}

.news-detail-content p {
    margin-bottom: 24px;
}

.news-detail-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 40px 0 20px;
    color: var(--text-primary);
}

.news-detail-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 32px 0 16px;
    color: var(--text-primary);
}

.news-detail-content ul {
    padding-left: 24px;
    margin-bottom: 24px;
}

.news-detail-content li {
    list-style: disc;
    margin-bottom: 12px;
}

.news-detail-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding: 16px 24px;
    background: rgba(0, 212, 255, 0.05);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 24px 0;
    font-style: italic;
}

/* ========================================
   产品页面
   ======================================== */
.products-section {
    padding: 80px 24px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    max-width: 1400px;
    margin: 0 auto;
}

.product-card {
    background: var(--dark-bg-3);
    border-radius: var(--radius-md);
    padding: 40px 32px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.product-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 255, 0.25);
    box-shadow: var(--shadow-lg);
}

.product-card.featured {
    border-color: var(--primary-color);
}

.product-card.featured::before {
    content: '热门';
    position: absolute;
    top: 20px;
    right: -30px;
    background: var(--gradient-primary);
    color: var(--dark-bg);
    padding: 4px 36px;
    font-size: 0.75rem;
    font-weight: 700;
    transform: rotate(45deg);
}

.product-icon {
    width: 72px;
    height: 72px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 24px;
}

.product-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.product-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 28px;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.product-features li::before {
    content: '✓';
    width: 20px;
    height: 20px;
    background: rgba(16, 185, 129, 0.15);
    color: var(--success-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    flex-shrink: 0;
}

.product-cta {
    width: 100%;
}

/* ========================================
   动画
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-12px);
    }
}

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

.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);
}

/* ========================================
   返回顶部
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    border: none;
    color: #fff;
    font-size: 1.2rem;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

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

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }

    .hero h1 {
        font-size: 2.75rem;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-stats {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-visual-wrapper {
        margin: 0 auto;
    }

    .floating-card.card-1 {
        left: -5%;
    }

    .floating-card.card-2 {
        right: -5%;
    }

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

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

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

    .services-wrapper {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

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

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

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

@media (max-width: 768px) {
    .section {
        padding: 64px 20px;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .nav-menu {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(10, 14, 26, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 8px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu a {
        width: 100%;
        padding: 14px 20px;
    }

    .nav-actions .btn-outline {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    .hero {
        padding: 100px 20px 60px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .floating-card {
        padding: 12px 16px;
    }

    .floating-card.card-1 {
        top: 5%;
        left: 0;
    }

    .floating-card.card-2 {
        bottom: 10%;
        right: 0;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .security-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .cta-content {
        padding: 40px 24px;
    }

    .cta-content h2 {
        font-size: 1.8rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-brand {
        max-width: 100%;
    }

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

    .page-banner {
        padding: 120px 20px 60px;
    }

    .page-banner h1 {
        font-size: 2rem;
    }

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

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

    .team-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

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

    .trading-table {
        font-size: 0.8rem;
    }

    .trading-table th,
    .trading-table td {
        padding: 14px 12px;
    }

    .news-detail-header h1 {
        font-size: 1.6rem;
    }

    .news-detail-image {
        height: 240px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }

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

    .hero-actions .btn {
        width: 100%;
    }

    .btn-lg {
        padding: 14px 28px;
    }

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

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