/* ============================================
   冷钱包官网 - 全局样式表
   主题：深色专业风 + 金色点缀（安全、可靠、高端）
   ============================================ */

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

:root {
    /* 主色调 */
    --color-primary: #0d1117;        /* 深蓝黑背景 */
    --color-secondary: #161b22;      /* 次背景 */
    --color-tertiary: #21262d;       /* 卡片/边框背景 */
    --color-accent: #f5c542;         /* 金色点缀（安全感） */
    --color-accent-hover: #ffd86b;   /* 金色悬停 */
    --color-accent-soft: rgba(245, 197, 66, 0.15);
    --color-cyan: #58a6ff;           /* 青蓝色辅助 */
    --color-green: #3fb950;          /* 成功/在线状态 */
    --color-text: #e6edf3;           /* 主文字 */
    --color-text-secondary: #8b949e; /* 次文字 */
    --color-border: #30363d;         /* 边框色 */
    --color-white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #0d1117 0%, #1a1f2e 50%, #0d1117 100%);
    --gradient-accent: linear-gradient(135deg, #f5c542 0%, #d4a830 100%);
    --gradient-glow: linear-gradient(135deg, rgba(245,197,66,0.3) 0%, rgba(88,166,255,0.2) 100%);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(245, 197, 66, 0.2);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --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(--color-primary);
    color: var(--color-text);
    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: inherit;
    text-decoration: none;
    transition: var(--transition);
}

ul, ol {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- 动画关键帧 --- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-40px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes slideInRight {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}
@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(245, 197, 66, 0.3); }
    50% { box-shadow: 0 0 40px rgba(245, 197, 66, 0.6); }
}

/* 滚动显示动画 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   导航栏 Header
   ============================================ */
header.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}
header.site-header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

nav.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
}
.brand-logo .logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-accent);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--color-primary);
    font-weight: 900;
}
.brand-logo span.brand-name {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 8px;
    align-items: center;
}
.nav-links a {
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    position: relative;
}
.nav-links a:hover,
.nav-links a.active {
    color: var(--color-accent);
    background: var(--color-accent-soft);
}
.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 2px;
    background: var(--gradient-accent);
    border-radius: 2px;
}

.nav-cta {
    padding: 10px 24px !important;
    background: var(--gradient-accent) !important;
    color: var(--color-primary) !important;
    font-weight: 600 !important;
    border-radius: var(--radius-md) !important;
    transition: var(--transition);
}
.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(245, 197, 66, 0.3);
}

/* 移动端汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 8px;
}
.hamburger span {
    width: 26px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================
   Hero 主视觉区
   ============================================ */
section#hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: var(--gradient-primary);
    overflow: hidden;
}
section#hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--color-accent-soft) 0%, transparent 70%);
    pointer-events: none;
}
section#hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(88,166,255,0.15) 0%, transparent 70%);
    pointer-events: none;
}

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

.hero-text h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease forwards;
}
.hero-text h1 .gradient-text {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    margin-bottom: 36px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    font-family: inherit;
}
.btn-primary {
    background: var(--gradient-accent);
    color: var(--color-primary);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(245, 197, 66, 0.4);
}
.btn-secondary {
    background: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}
.btn-secondary:hover {
    background: var(--color-accent-soft);
    transform: translateY(-3px);
}

.hero-visual {
    position: relative;
    animation: fadeIn 1s ease 0.3s forwards;
    opacity: 0;
}
.hero-visual .wallet-mockup {
    position: relative;
    max-width: 420px;
    margin: 0 auto;
    animation: float 6s ease-in-out infinite;
}
.hero-visual .wallet-mockup img {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-glow), var(--shadow-card);
    animation: glow 3s ease-in-out infinite;
}

.floating-badge {
    position: absolute;
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-card);
    animation: float 5s ease-in-out infinite;
}
.floating-badge.top-left {
    top: 10%;
    left: -30px;
    animation-delay: 0.5s;
}
.floating-badge.bottom-right {
    bottom: 15%;
    right: -20px;
    animation-delay: 1s;
}
.floating-badge .badge-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-weight: 700;
}
.floating-badge .badge-text {
    font-size: 0.85rem;
    font-weight: 600;
}
.floating-badge .badge-text small {
    display: block;
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    font-weight: 400;
}

/* 信任徽标 */
.trust-bar {
    margin-top: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    padding: 20px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}
.trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}
.trust-item strong {
    color: var(--color-accent);
    font-size: 1.1rem;
}

/* ============================================
   通用区块样式
   ============================================ */
.section {
    padding: 100px 0;
    position: relative;
}
.section-alt {
    background: var(--color-secondary);
}
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px;
}
.section-header h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-white);
}
.section-header h2 span {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.section-header p {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
}

/* ============================================
   核心特性 Features
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.feature-card {
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    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-accent);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}
.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-accent);
    box-shadow: 0 20px 50px rgba(245, 197, 66, 0.15);
}
.feature-card:hover::before {
    transform: scaleX(1);
}
.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: var(--color-accent-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    font-size: 1.8rem;
}
.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-white);
}
.feature-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ============================================
   服务介绍 Services
   ============================================ */
.services-section .service-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 100px;
}
.services-section .service-row:last-child {
    margin-bottom: 0;
}
.service-row.reverse {
    direction: rtl;
}
.service-row.reverse > * {
    direction: ltr;
}
.service-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}
.service-content h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--color-white);
}
.service-content h3 span {
    color: var(--color-accent);
}
.service-content p {
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    font-size: 1rem;
    line-height: 1.8;
}
.service-features-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.service-features-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--color-text);
    font-size: 0.95rem;
}
.service-features-list li::before {
    content: '✓';
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-green);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    margin-top: 2px;
}

/* ============================================
   产品展示 Products 页面
   ============================================ */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}
.product-card {
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border-color: var(--color-accent);
}
.product-image {
    position: relative;
    padding-top: 66%;
    overflow: hidden;
}
.product-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.product-card:hover .product-image img {
    transform: scale(1.08);
}
.product-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 14px;
    background: var(--gradient-accent);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 20px;
}
.product-info {
    padding: 28px;
}
.product-info h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
    color: var(--color-white);
}
.product-info p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: 18px;
    line-height: 1.6;
}
.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 18px;
    border-top: 1px solid var(--color-border);
}
.product-price {
    color: var(--color-accent);
    font-weight: 700;
    font-size: 1.1rem;
}
.product-link {
    color: var(--color-cyan);
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}
.product-link:hover {
    gap: 8px;
    color: var(--color-accent);
}

/* ============================================
   统计数据区
   ============================================ */
.stats-section {
    background: var(--color-secondary);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.stat-item {
    text-align: center;
    padding: 32px 20px;
    background: var(--color-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}
.stat-number {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: 8px;
    font-family: 'Noto Sans SC', monospace;
}
.stat-label {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* ============================================
   步骤流程区
   ============================================ */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
}
.step-item {
    text-align: center;
    padding: 32px 20px;
    position: relative;
}
.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-accent);
    color: var(--color-primary);
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}
.step-item h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--color-white);
}
.step-item p {
    color: var(--color-text-secondary);
    font-size: 0.88rem;
}

/* ============================================
   为什么选择我们 / 对比表
   ============================================ */
.compare-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--color-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
}
.compare-table th,
.compare-table td {
    padding: 18px 24px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.95rem;
}
.compare-table thead th {
    background: var(--color-tertiary);
    color: var(--color-accent);
    font-weight: 700;
}
.compare-table tbody tr:last-child td {
    border-bottom: none;
}
.compare-table td:first-child {
    color: var(--color-text-secondary);
    font-weight: 500;
}
.check-mark {
    color: var(--color-green);
    font-weight: 700;
    font-size: 1.1rem;
}
.cross-mark {
    color: #f85149;
}

/* ============================================
   测试评价 Testimonials
   ============================================ */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.testimonial-card {
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    position: relative;
}
.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 16px;
    right: 24px;
    font-size: 4rem;
    color: var(--color-accent);
    opacity: 0.3;
    font-family: Georgia, serif;
    line-height: 1;
}
.testimonial-text {
    color: var(--color-text);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}
.testimonial-author {
    display: flex;
    align-items: center;
    gap: 14px;
}
.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--color-primary);
}
.author-info strong {
    display: block;
    color: var(--color-white);
    font-size: 0.9rem;
}
.author-info span {
    color: var(--color-text-secondary);
    font-size: 0.8rem;
}
.testimonial-rating {
    color: var(--color-accent);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

/* ============================================
   FAQ 常见问题
   ============================================ */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition);
}
.faq-item.active {
    border-color: var(--color-accent);
    box-shadow: 0 4px 20px rgba(245, 197, 66, 0.1);
}
.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 22px 28px;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
}
.faq-question:hover {
    color: var(--color-accent);
}
.faq-question .faq-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-accent-soft);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: transform 0.3s ease;
    margin-left: 16px;
}
.faq-item.active .faq-icon {
    transform: rotate(45deg);
    background: var(--color-accent);
    color: var(--color-primary);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}
.faq-item.active .faq-answer {
    max-height: 500px;
}
.faq-answer-inner {
    padding: 0 28px 22px;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* ============================================
   行动号召 CTA
   ============================================ */
section#cta {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-tertiary) 100%);
    position: relative;
    overflow: hidden;
    text-align: center;
}
section#cta::before {
    content: '';
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-accent-soft) 0%, transparent 70%);
    pointer-events: none;
}
.cta-content {
    position: relative;
    z-index: 2;
}
.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-white);
}
.cta-content h2 span {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.cta-content p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    margin-bottom: 36px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   新闻列表 News
   ============================================ */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}
.news-card {
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}
.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
    border-color: var(--color-accent);
}
.news-thumb {
    position: relative;
    padding-top: 56%;
    overflow: hidden;
}
.news-thumb img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.news-card:hover .news-thumb img {
    transform: scale(1.08);
}
.news-category {
    position: absolute;
    top: 14px;
    left: 14px;
    background: var(--gradient-accent);
    color: var(--color-primary);
    padding: 4px 12px;
    font-size: 0.72rem;
    font-weight: 700;
    border-radius: 4px;
}
.news-body {
    padding: 24px;
}
.news-date {
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    margin-bottom: 10px;
}
.news-body h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--color-white);
    line-height: 1.5;
    transition: var(--transition);
}
.news-card:hover h3 {
    color: var(--color-accent);
}
.news-excerpt {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.read-more {
    color: var(--color-cyan);
    font-size: 0.88rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.read-more:hover {
    gap: 8px;
    color: var(--color-accent);
}

/* ============================================
   新闻详情页
   ============================================ */
.news-detail-container {
    max-width: 820px;
    margin: 0 auto;
}
.news-detail-header {
    margin-bottom: 32px;
    text-align: center;
}
.news-detail-header .news-category {
    display: inline-block;
    margin-bottom: 16px;
    position: static;
}
.news-detail-header h1 {
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 16px;
}
.news-meta {
    color: var(--color-text-secondary);
    font-size: 0.88rem;
}
.news-featured-image {
    margin-bottom: 40px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.news-featured-image img {
    width: 100%;
}
.news-article-content {
    color: var(--color-text);
    font-size: 1.05rem;
    line-height: 1.9;
}
.news-article-content p {
    margin-bottom: 22px;
}
.news-article-content h2 {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 40px 0 16px;
    color: var(--color-white);
    padding-left: 14px;
    border-left: 4px solid var(--color-accent);
}
.news-article-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 28px 0 12px;
    color: var(--color-accent);
}
.news-article-content ul,
.news-article-content ol {
    margin: 16px 0 22px 24px;
    color: var(--color-text);
}
.news-article-content li {
    margin-bottom: 10px;
    list-style: disc;
}
.news-article-content ol li {
    list-style: decimal;
}
.news-article-content blockquote {
    background: var(--color-secondary);
    border-left: 4px solid var(--color-accent);
    padding: 20px 24px;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: 24px 0;
    color: var(--color-text-secondary);
    font-style: italic;
}

/* ============================================
   关于页面 About
   ============================================ */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}
.about-text h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 20px;
}
.about-text h2 span {
    color: var(--color-accent);
}
.about-text p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 28px;
}
.team-card {
    text-align: center;
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 20px;
    transition: var(--transition);
}
.team-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-accent);
}
.team-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 18px;
    background: var(--gradient-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
}
.team-card h4 {
    font-size: 1.1rem;
    color: var(--color-white);
    margin-bottom: 6px;
}
.team-card .role {
    color: var(--color-accent);
    font-size: 0.88rem;
}

/* ============================================
   联系页面 Contact
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.contact-item {
    display: flex;
    gap: 18px;
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    transition: var(--transition);
}
.contact-item:hover {
    border-color: var(--color-accent);
    transform: translateX(5px);
}
.contact-item-icon {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    background: var(--color-accent-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}
.contact-item h4 {
    font-size: 1.05rem;
    color: var(--color-white);
    margin-bottom: 6px;
}
.contact-item p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.contact-form-wrapper {
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px;
}
.contact-form-wrapper h3 {
    font-size: 1.3rem;
    margin-bottom: 24px;
    color: var(--color-white);
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-text);
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    background: var(--color-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-soft);
}
.form-group textarea {
    resize: vertical;
    min-height: 130px;
}

/* ============================================
   面包屑导航
   ============================================ */
.breadcrumb {
    background: var(--color-secondary);
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border);
}
.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}
.breadcrumb-list li a:hover {
    color: var(--color-accent);
}
.breadcrumb-list li:not(:last-child)::after {
    content: '›';
    margin-left: 10px;
    color: var(--color-text-secondary);
}
.breadcrumb-list li:last-child {
    color: var(--color-accent);
}

/* 内部页面 Hero */
.page-hero {
    padding: 160px 0 80px;
    text-align: center;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}
.page-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--color-accent-soft) 0%, transparent 70%);
    pointer-events: none;
}
.page-hero-content {
    position: relative;
    z-index: 2;
}
.page-hero h1 {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 800;
    margin-bottom: 16px;
}
.page-hero p {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Footer 页脚
   ============================================ */
footer.site-footer {
    background: var(--color-primary);
    border-top: 1px solid var(--color-border);
    padding-top: 72px;
    color: var(--color-text-secondary);
}
.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
}
.footer-brand p {
    margin: 16px 0 20px;
    line-height: 1.8;
    font-size: 0.9rem;
}
.social-links {
    display: flex;
    gap: 12px;
}
.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: var(--transition);
}
.social-links a:hover {
    background: var(--color-accent);
    color: var(--color-primary);
    transform: translateY(-3px);
}
.footer-col h4 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: 20px;
    font-weight: 700;
}
.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.footer-col ul a {
    font-size: 0.9rem;
    transition: var(--transition);
}
.footer-col ul a:hover {
    color: var(--color-accent);
    padding-left: 4px;
}
.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}
.footer-bottom strong {
    color: var(--color-accent);
}

/* ============================================
   返回顶部按钮
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-accent);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    border: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 4px 20px rgba(245, 197, 66, 0.4);
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(245, 197, 66, 0.5);
}

/* ============================================
   响应式适配
   ============================================ */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    .services-section .service-row {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .service-row.reverse {
        direction: ltr;
    }
    .about-intro {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    .hero-text h1,
    .hero-text p.hero-subtitle,
    .hero-buttons {
        text-align: center;
    }
    .hero-buttons {
        justify-content: center;
    }
    .trust-bar {
        gap: 24px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(13, 17, 23, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 8px;
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }
    .nav-links.open {
        transform: translateY(0);
    }
    .nav-links a {
        width: 100%;
        padding: 14px 20px;
    }
    .nav-cta {
        text-align: center;
    }
    .hamburger {
        display: flex;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    .steps-grid {
        grid-template-columns: 1fr;
    }
    .footer-content {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .section {
        padding: 70px 0;
    }
    section#hero {
        padding: 110px 0 60px;
    }

    .floating-badge {
        display: none;
    }

    .compare-table {
        font-size: 0.85rem;
    }
    .compare-table th,
    .compare-table td {
        padding: 12px 14px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .btn {
        padding: 14px 28px;
        font-size: 0.95rem;
    }
    .brand-logo .brand-name {
        font-size: 1rem;
    }
}

/* ============================================
   辅助工具类
   ============================================ */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-48 { margin-bottom: 48px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }