/* ============ WEEX 全局样式 ============ */
:root {
    --primary: #00d4aa;
    --primary-dark: #00b894;
    --primary-light: #00ffcc;
    --secondary: #1a1a2e;
    --dark-bg: #0f0f1a;
    --darker-bg: #0a0a12;
    --card-bg: #1e1e30;
    --text-primary: #ffffff;
    --text-secondary: #b0b0c0;
    --text-muted: #7a7a8e;
    --gradient-1: linear-gradient(135deg, #00d4aa 0%, #0099ff 100%);
    --gradient-2: linear-gradient(135deg, #1a1a2e 0%, #0f0f1a 100%);
    --shadow: 0 10px 40px rgba(0, 212, 170, 0.15);
    --shadow-hover: 0 20px 60px rgba(0, 212, 170, 0.25);
    --radius: 12px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

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

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

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

ul, ol {
    list-style: none;
}

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

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

/* ============ 导航栏 ============ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 18, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.site-header.scrolled {
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.5);
}

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

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.brand-logo {
    width: 40px;
    height: 40px;
    background: var(--gradient-1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 18px;
    color: #fff;
}

.nav-links {
    display: flex;
    gap: 36px;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    position: relative;
    padding: 8px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

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

.btn-login {
    padding: 10px 20px;
    border-radius: 8px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-register {
    padding: 10px 24px;
    background: var(--gradient-1);
    border-radius: 8px;
    color: #fff;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 212, 170, 0.3);
}

.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 170, 0.5);
}

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

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

/* ============ Hero 区域 ============ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 0 60px;
    background: var(--gradient-2);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 153, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

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

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: 30px;
    font-size: 14px;
    color: var(--primary-light);
    margin-bottom: 28px;
}

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

.hero h1 {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #ffffff 0%, #00d4aa 50%, #0099ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 17px;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.8;
}

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

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    background: var(--gradient-1);
    border-radius: 50px;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 8px 30px rgba(0, 212, 170, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 212, 170, 0.6);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50px;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--primary);
    transform: translateY(-3px);
}

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

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

.stat-num {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 6px;
}

.hero-visual {
    position: relative;
    animation: fadeInRight 1s ease;
}

.hero-image-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.hero-image {
    width: 100%;
    border-radius: 20px;
}

.floating-card {
    position: absolute;
    background: rgba(30, 30, 48, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 16px 20px;
    box-shadow: var(--shadow-hover);
    animation: float 3s ease-in-out infinite;
}

.floating-card.card-1 {
    top: 20px;
    left: -30px;
    animation-delay: 0s;
}

.floating-card.card-2 {
    bottom: 40px;
    right: -20px;
    animation-delay: 1.5s;
}

.floating-card-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 10px;
}

.floating-card-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
}

.floating-card-value {
    font-size: 12px;
    color: var(--text-muted);
}

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

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

.section-title h2 {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-title p {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.section-title .accent {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============ 核心特性 ============ */
.features-bg {
    background: var(--dark-bg);
}

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

.feature-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 40px 32px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 170, 0.3);
    box-shadow: var(--shadow-hover);
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    background: rgba(0, 212, 170, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 24px;
}

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

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

/* ============ 服务介绍 ============ */
.services-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.services-grid.reverse {
    direction: rtl;
}

.services-grid.reverse > * {
    direction: ltr;
}

.services-content h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.services-content p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.services-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.services-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text-secondary);
}

.services-list li::before {
    content: '✓';
    width: 24px;
    height: 24px;
    background: rgba(0, 212, 170, 0.15);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
}

.services-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.services-image img {
    width: 100%;
    transition: transform 0.5s ease;
}

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

/* ============ 产品/下载区域 ============ */
.products-bg {
    background: var(--dark-bg);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.product-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.product-card.featured {
    border-color: var(--primary);
    box-shadow: 0 0 40px rgba(0, 212, 170, 0.15);
}

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

.product-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.product-badge {
    padding: 6px 14px;
    background: var(--gradient-1);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
}

.product-icon {
    font-size: 48px;
}

.product-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}

.product-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 24px;
    flex-grow: 1;
}

.product-features {
    margin-bottom: 28px;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-secondary);
    padding: 6px 0;
}

.product-features li::before {
    content: '▸';
    color: var(--primary);
    font-weight: 700;
}

.product-download {
    display: flex;
    gap: 12px;
}

.download-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.download-btn.primary {
    background: var(--gradient-1);
    color: #fff;
}

.download-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 170, 0.5);
}

.download-btn.secondary {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
}

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

/* ============ 优势统计 ============ */
.stats-section {
    background: var(--darker-bg);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.stat-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

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

.stat-card-num {
    font-size: 42px;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-card-label {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ============ 行动号召 CTA ============ */
.cta-section {
    background: var(--gradient-1);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

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

.cta-content h2 {
    font-size: 40px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 36px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn-white {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 18px 48px;
    background: #fff;
    border-radius: 50px;
    color: var(--primary-dark);
    font-size: 16px;
    font-weight: 700;
    transition: var(--transition);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.btn-white:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

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

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

.faq-item {
    background: var(--card-bg);
    border-radius: var(--radius);
    margin-bottom: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active {
    border-color: var(--primary);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 28px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
}

.faq-question .icon {
    width: 32px;
    height: 32px;
    background: rgba(0, 212, 170, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--primary);
    transition: var(--transition);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item.active .faq-question .icon {
    transform: rotate(45deg);
    background: var(--gradient-1);
    color: #fff;
}

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

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

/* ============ 新闻列表 ============ */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

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

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

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

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

.news-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 14px;
    background: var(--gradient-1);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
}

.news-content {
    padding: 24px;
}

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

.news-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.4;
    transition: var(--transition);
}

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

.news-excerpt {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============ 新闻详情 ============ */
.article-header {
    padding: 140px 0 60px;
    background: var(--gradient-2);
}

.article-cat {
    display: inline-block;
    padding: 6px 14px;
    background: var(--gradient-1);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
}

.article-header h1 {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 20px;
}

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

.article-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-body {
    padding: 60px 0;
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
}

.article-content p {
    font-size: 17px;
    line-height: 1.9;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.article-content h2 {
    font-size: 26px;
    font-weight: 700;
    margin: 40px 0 20px;
    color: var(--text-primary);
}

.article-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 30px 0 16px;
    color: var(--text-primary);
}

.article-content img {
    border-radius: var(--radius);
    margin: 30px 0;
}

.article-content ul {
    margin: 20px 0;
    padding-left: 20px;
}

.article-content ul li {
    list-style: disc;
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 10px;
}

/* ============ 关于我们 ============ */
.about-hero {
    padding: 160px 0 80px;
    background: var(--gradient-2);
    text-align: center;
}

.about-hero h1 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.about-content {
    padding: 80px 0;
}

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

.about-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-text h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 20px;
}

.about-text p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.value-card {
    text-align: center;
    padding: 30px 20px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

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

.value-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

.value-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
}

.value-card p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ============ 联系我们 ============ */
.contact-hero {
    padding: 160px 0 80px;
    background: var(--gradient-2);
    text-align: center;
}

.contact-hero h1 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
}

.contact-hero p {
    font-size: 18px;
    color: var(--text-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    padding: 80px 0;
}

.contact-info h2 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 24px;
}

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

.contact-item {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

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

.contact-icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 212, 170, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.contact-item h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
}

.contact-item p {
    font-size: 14px;
    color: var(--text-secondary);
}

.contact-form-wrapper {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-form-wrapper h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 28px;
}

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

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.15);
}

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

.submit-btn {
    width: 100%;
    padding: 16px;
    background: var(--gradient-1);
    border-radius: 10px;
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 170, 0.4);
}

/* ============ 面包屑导航 ============ */
.breadcrumb {
    padding: 20px 0;
    background: var(--darker-bg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.breadcrumb-list {
    display: flex;
    gap: 12px;
    align-items: center;
    font-size: 14px;
    color: var(--text-muted);
}

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

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

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

/* ============ 页脚 ============ */
.site-footer {
    background: var(--darker-bg);
    padding: 80px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-top: 16px;
    max-width: 280px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

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

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

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

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

.footer-social a:hover {
    background: var(--gradient-1);
    transform: translateY(-3px);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

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

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

.footer-legal a {
    font-size: 13px;
    color: var(--text-muted);
}

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

/* ============ 返回顶部 ============ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
    box-shadow: var(--shadow-hover);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-5px);
}

/* ============ 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 pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 42px;
    }
    
    .section-title h2 {
        font-size: 34px;
    }
    
    .features-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--darker-bg);
        flex-direction: column;
        padding: 30px;
        gap: 24px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-cta {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: 120px 0 60px;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero h1 {
        font-size: 34px;
    }
    
    .hero-desc {
        font-size: 15px;
    }
    
    .hero-stats {
        gap: 24px;
    }
    
    .stat-num {
        font-size: 26px;
    }
    
    .floating-card.card-1 {
        left: 0;
    }
    
    .floating-card.card-2 {
        right: 0;
    }
    
    .section {
        padding: 70px 0;
    }
    
    .section-title h2 {
        font-size: 28px;
    }
    
    .features-grid,
    .news-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .services-grid.reverse {
        direction: ltr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-card-num {
        font-size: 32px;
    }
    
    .cta-content h2 {
        font-size: 28px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
    
    .about-hero h1,
    .contact-hero h1 {
        font-size: 36px;
    }
    
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .article-header {
        padding: 120px 0 40px;
    }
    
    .article-header h1 {
        font-size: 28px;
    }
    
    .article-content p {
        font-size: 15px;
    }
    
    .product-download {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 28px;
    }
    
    .section-title h2 {
        font-size: 24px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn-primary,
    .btn-secondary {
        justify-content: center;
        width: 100%;
    }
}