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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #0a0e27;
    color: #e0e0e0;
    line-height: 1.6;
    overflow-x: hidden;
}

/* --- 1. 通用组件 --- */

/* 导航栏 */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    max-width: 100vw;
    height: 90px;
    background: rgba(10, 14, 39, 0.95);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 60px;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
    cursor: pointer;
}
.logo a {
    display: inline-block;
    font-size: inherit;
    font-weight: inherit;
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: inherit;
    text-decoration: none;
}

.logo img {
    height: 70px;
    max-height: 70px; /* 使用max-height以适应不同导航栏高度 */
    object-fit: contain;
    vertical-align: middle;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 40px;
}

nav a {
    color: #e0e0e0;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    transition: width 0.3s ease;
}

nav a:hover::after {
    width: 100%;
}

/* 响应式导航（汉堡菜单） */
.nav-toggle {
    display: none;
    background: transparent;
    border: none;
    width: 44px;
    height: 44px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

.hamburger {
    display: inline-block;
    width: 24px;
    height: 2px;
    background: #e0e0e0;
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background: #e0e0e0;
}

.hamburger::before { top: -8px; }
.hamburger::after { top: 8px; }

.nav-menu {
    display: flex;
    gap: 40px;
}

/* 通用按钮 */
.btn {
    padding: 16px 45px;
    font-size: 1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    letter-spacing: 1px;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: left 0.4s ease;
    z-index: -1;
}

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

.btn-text {
    position: relative;
    z-index: 1;
}

.btn-icon {
    display: inline-block;
    transition: transform 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    color: #000;
    box-shadow: 0 20px 50px rgba(0, 212, 255, 0.35);
}

.btn-primary:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 70px rgba(0, 212, 255, 0.5);
}

.btn-primary:hover .btn-icon {
    transform: translateX(5px);
}

.btn-secondary {
    background: transparent;
    color: #00d4ff;
    border: 2px solid rgba(0, 212, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.15);
    border-color: #00d4ff;
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.25);
}

/* 通用区块标题 */
.section-title {
    text-align: center;
    font-size: 3.5rem;
    margin-bottom: 80px;
    color: #ffffff;
    font-weight: 800;
    letter-spacing: -1px;
    position: relative;
    padding-bottom: 30px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #00d4ff, #0099ff);
    border-radius: 2px;
}

/* 通用页头 */
.page-header {
    padding: 120px 60px;
    background: linear-gradient(180deg, #0a0e27 0%, #1a1f3a 100%);
    margin-top: 80px;
    text-align: center;
}

.page-header h1 {
    font-size: 4rem;
    color: #ffffff;
    font-weight: 800;
    margin-bottom: 20px;
}

.page-header p {
    font-size: 1.2rem;
    color: #b0b0b0;
    max-width: 800px;
    margin: 0 auto;
}

/* 页脚 */
/* --- 页脚 --- */
footer {
    background-color: #0f172a; /* 更现代的深蓝色背景 */
    padding: 50px 60px;
    color: #94a3b8; /* 柔和的灰色文字 */
    border-top: 1px solid rgba(0, 212, 255, 0.2);
    font-size: 0.9rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

footer a {
    color: #00d4ff;
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: #00d4ff; /* 鼠标悬停时变为主题亮蓝色 */
}

#contact-info {
    color: #00d4ff; /* 电话号码使用亮蓝色 */
    font-weight: bold;
    background-color: rgba(0, 212, 255, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 10px;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

/* --- 新增：返回顶部按钮 --- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    color: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
    z-index: 999;
}

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

.back-to-top:hover {
    transform: scale(1.1);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.5);
}

/* --- 2. 首页 (index.html) --- */

/* 英雄区 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    margin-top: 90px;
}

/* 背景图片轮播 */
.hero-carousel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.carousel-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.carousel-item.active {
    opacity: 1;
}

/* 半透明遮罩 */
.hero::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: rgba(10, 14, 39, 0.6);
    z-index: 2;
}

/* 动态渐变效果 */
.hero::after {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(0, 153, 255, 0.1) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
    z-index: 2;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -30px); }
}

/* 轮播控制按钮 */
.carousel-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    gap: 12px;
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.carousel-dot.active {
    background: #00d4ff;
    border-color: #00d4ff;
    width: 30px;
    border-radius: 6px;
}

.carousel-dot:hover {
    background: rgba(0, 212, 255, 0.7);
    border-color: #00d4ff;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 900px;
    animation: fadeInUp 1s ease-out;
}

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

.hero-badge {
    display: inline-block;
    padding: 10px 20px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 30px;
    color: #00d4ff;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 30px;
    letter-spacing: 1px;
    animation: fadeInUp 0.8s ease-out;
}

.hero h1 {
    font-size: 5.5rem;
    margin-bottom: 25px;
    color: #f5f5f5;
    font-weight: 800;
    letter-spacing: -2px;
    line-height: 1.1;
    animation: slideInDown 1s ease-out;
}

.gradient-text {
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hero p {
    font-size: 1.2rem;
    margin-bottom: 50px;
    color: #c0c0c0;
    font-weight: 400;
    letter-spacing: 0.5px;
    line-height: 1.8;
    animation: fadeInUp 1.2s ease-out;
}

.cta-buttons {
    display: flex;
    gap: 30px;
    justify-content: center;
}

/* 特性区 */
.features {
    padding: 120px 60px;
    background: linear-gradient(180deg, #0a0e27 0%, #1a1f3a 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.feature-card {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.08) 0%, rgba(0, 153, 255, 0.04) 100%);
    padding: 45px;
    border-radius: 12px;
    border: 1px solid rgba(0, 212, 255, 0.25);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.15), transparent);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card:hover {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(0, 153, 255, 0.08) 100%);
    border-color: rgba(0, 212, 255, 0.6);
    transform: translateY(-15px);
    box-shadow: 0 30px 60px rgba(0, 212, 255, 0.25);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    display: inline-block;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.2) rotateY(10deg);
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-card p {
    color: #b8b8b8;
    line-height: 1.8;
    font-size: 0.95rem;
}

/* 产品展示区 */
.products {
    padding: 120px 60px;
    background-color: #0a0e27;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 50px;
    margin-bottom: 60px;
}

.product-item {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    aspect-ratio: 1;
    cursor: pointer;
}

.product-image {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a3a4a 0%, #0a1a2a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
}

.product-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 30%, rgba(0, 212, 255, 0.2), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.product-item:hover .product-image {
    transform: scale(1.1) rotate(2deg);
}

.product-item:hover .product-image::before {
    opacity: 1;
}

.product-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.95), rgba(0, 0, 0, 0.5) 50%, transparent 100%);
    padding: 40px 30px;
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.product-item:hover .product-overlay {
    transform: translateY(0);
}

.product-overlay h3 {
    color: #00d4ff;
    font-size: 1.4rem;
    margin-bottom: 12px;
    font-weight: 700;
}

.product-overlay p {
    color: #d0d0d0;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* 统计区 */
.stats {
    padding: 100px 60px;
    background: linear-gradient(180deg, #1a1f3a 0%, #0a0e27 100%);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 60px;
    text-align: center;
}

.stat-item h2 {
    font-size: 3.5rem;
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
    font-weight: 800;
}

.stat-item p {
    color: #a0a0a0;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    font-weight: 600;
}

.stat-item {
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-10px);
}

/* 联系区 */
.contact {
    padding: 120px 60px;
    background: linear-gradient(180deg, #0a0e27 0%, #1a1f3a 100%);
    text-align: center;
}

.contact h2 {
    font-size: 3rem;
    margin-bottom: 30px;
    color: #ffffff;
    font-weight: 800;
    letter-spacing: -1px;
}

.contact p {
    font-size: 1.1rem;
    color: #b0b0b0;
    margin-bottom: 50px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

/* --- 3. 其他页面特定样式 --- */

/* 面包屑导航 (products.html) */
.breadcrumb {
    padding: 120px 60px 40px;
    background: linear-gradient(180deg, #0a0e27 0%, #1a1f3a 100%);
    margin-top: 80px;
}

.breadcrumb a {
    color: #00d4ff;
    text-decoration: none;
    margin-right: 15px;
}

.breadcrumb span {
    color: #666;
    margin: 0 10px;
}

/* 产品网格 (products.html) */
.products-section {
    padding: 80px 60px;
    background-color: #0a0e27;
}

.product-card {
    background: linear-gradient(135deg, rgba(26, 42, 74, 0.5) 0%, rgba(10, 31, 58, 0.5) 100%);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
}

.product-card:hover {
    background: linear-gradient(135deg, rgba(26, 42, 74, 0.8) 0%, rgba(10, 31, 58, 0.8) 100%);
    border-color: rgba(0, 212, 255, 0.6);
    transform: translateY(-15px);
    box-shadow: 0 30px 60px rgba(0, 212, 255, 0.25);
}

.product-header {
    padding: 40px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 153, 255, 0.05) 100%);
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
}

.product-icon {
    font-size: 4rem;
    margin-bottom: 15px;
}

.product-card h3 {
    font-size: 1.8rem;
    color: #00d4ff;
    margin-bottom: 10px;
    font-weight: 700;
}

.product-card .product-category {
    color: #888;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.product-body {
    padding: 30px 40px;
}

.product-features {
    margin-bottom: 20px;
}

.product-features li {
    list-style: none;
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: #b8b8b8;
    font-size: 0.95rem;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #00d4ff;
    font-weight: bold;
}

.product-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    padding: 15px 0;
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    margin: 20px 0;
}

.spec-item {
    font-size: 0.85rem;
}

.spec-label {
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.75rem;
    margin-bottom: 5px;
}

.spec-value {
    color: #00d4ff;
    font-weight: 600;
}

.product-footer {
    display: flex;
    gap: 15px;
    padding-top: 20px;
}

/* about.html: 公司简介 */
.about-section {
    padding: 80px 60px;
    background-color: #0a0e27;
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.about-text h2 {
    font-size: 2.5rem;
    color: #ffffff;
    font-weight: 800;
    margin-bottom: 25px;
    line-height: 1.3;
}

.about-text p {
    color: #b8b8b8;
    line-height: 1.9;
    margin-bottom: 15px;
    font-size: 1rem;
}

.about-highlight {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 153, 255, 0.05) 100%);
    border-left: 4px solid #00d4ff;
    padding: 25px;
    margin-top: 30px;
    border-radius: 8px;
}

.about-image {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #1a3a4a 0%, #0a1a2a 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
}

/* about.html: 发展历程 */
.timeline {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    padding: 40px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, #00d4ff, transparent);
}

.timeline-item {
    margin-bottom: 50px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.timeline-item:nth-child(even) {
    direction: rtl;
}

.timeline-item:nth-child(even) .timeline-content {
    direction: ltr;
}

.timeline-dot {
    width: 20px;
    height: 20px;
    background: #00d4ff;
    border: 4px solid #0a0e27;
    border-radius: 50%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 20px;
}

.timeline-content {
    background: linear-gradient(135deg, rgba(26, 42, 74, 0.5) 0%, rgba(10, 31, 58, 0.5) 100%);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 12px;
    padding: 30px;
    position: relative;
}

.timeline-content h3 {
    color: #00d4ff;
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.timeline-year {
    color: #888;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.timeline-content p {
    color: #b8b8b8;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* about.html: 公司数据 */
.stats-section {
    padding: 80px 60px;
    background: linear-gradient(180deg, #1a1f3a 0%, #0a0e27 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.stat-card {
    text-align: center;
    padding: 40px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.08) 0%, rgba(0, 153, 255, 0.04) 100%);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.stat-card:hover {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(0, 153, 255, 0.08) 100%);
    transform: translateY(-10px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.stat-label {
    color: #b0b0b0;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* about.html: 核心价值观 */
.values-section {
    padding: 80px 60px;
    background-color: #0a0e27;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.value-card {
    background: linear-gradient(135deg, rgba(26, 42, 74, 0.5) 0%, rgba(10, 31, 58, 0.5) 100%);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.value-card:hover {
    background: linear-gradient(135deg, rgba(26, 42, 74, 0.8) 0%, rgba(10, 31, 58, 0.8) 100%);
    border-color: rgba(0, 212, 255, 0.6);
    transform: translateY(-15px);
    box-shadow: 0 30px 60px rgba(0, 212, 255, 0.25);
}

.value-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.value-card h3 {
    font-size: 1.4rem;
    color: #00d4ff;
    margin-bottom: 15px;
    font-weight: 700;
}

.value-card p {
    color: #b8b8b8;
    line-height: 1.8;
    font-size: 0.95rem;
}

/* technology.html: 技术部分 */
.tech-section {
    padding: 80px 60px;
    background-color: #0a0e27;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 50px;
    margin-bottom: 100px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.tech-card {
    background: linear-gradient(135deg, rgba(26, 42, 74, 0.5) 0%, rgba(10, 31, 58, 0.5) 100%);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 15px;
    padding: 45px 40px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.tech-card:hover {
    background: linear-gradient(135deg, rgba(26, 42, 74, 0.8) 0%, rgba(10, 31, 58, 0.8) 100%);
    border-color: rgba(0, 212, 255, 0.6);
    transform: translateY(-15px);
    box-shadow: 0 30px 60px rgba(0, 212, 255, 0.25);
}

.tech-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.tech-card h3 {
    font-size: 1.6rem;
    color: #00d4ff;
    margin-bottom: 15px;
    font-weight: 700;
}

.tech-card p {
    color: #b8b8b8;
    line-height: 1.8;
    margin-bottom: 20px;
}

.tech-features {
    list-style: none;
}

.tech-features li {
    padding: 6px 0;
    padding-left: 25px;
    position: relative;
    color: #a0a0a0;
    font-size: 0.9rem;
}

.tech-features li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: #00d4ff;
    font-weight: bold;
}

/* technology.html: 专利技术 */
.patents-section {
    padding: 80px 60px;
    background: linear-gradient(180deg, #1a1f3a 0%, #0a0e27 100%);
}

.patents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.patent-card {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 153, 255, 0.05) 100%);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 12px;
    padding: 35px;
    transition: all 0.3s ease;
}

.patent-card:hover {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.15) 0%, rgba(0, 153, 255, 0.08) 100%);
    border-color: rgba(0, 212, 255, 0.6);
    transform: translateY(-8px);
}

.patent-number {
    color: #00d4ff;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.patent-card h4 {
    font-size: 1.3rem;
    color: #ffffff;
    margin-bottom: 12px;
    font-weight: 700;
}

.patent-card p {
    color: #a0a0a0;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* technology.html: 研发成果 */
.achievements-section {
    padding: 80px 60px;
    background-color: #0a0e27;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.achievement-item {
    text-align: center;
}

.achievement-number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.achievement-label {
    color: #b0b0b0;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* --- solutions.html --- */
.solutions-section {
    padding: 80px 60px;
    background-color: #0a0e27;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 50px;
    margin-bottom: 80px;
}

.solution-card {
    background: linear-gradient(135deg, rgba(26, 42, 74, 0.5) 0%, rgba(10, 31, 58, 0.5) 100%);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
}

.solution-card:hover {
    background: linear-gradient(135deg, rgba(26, 42, 74, 0.8) 0%, rgba(10, 31, 58, 0.8) 100%);
    border-color: rgba(0, 212, 255, 0.6);
    transform: translateY(-15px);
    box-shadow: 0 30px 60px rgba(0, 212, 255, 0.25);
}

.solution-header {
    padding: 50px 40px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 153, 255, 0.05) 100%);
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
    text-align: center;
}

.solution-icon {
    font-size: 5rem;
    margin-bottom: 20px;
}

.solution-card h3 {
    font-size: 1.8rem;
    color: #00d4ff;
    margin-bottom: 10px;
    font-weight: 700;
}

.solution-body {
    padding: 30px 40px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.solution-description {
    margin-bottom: 25px;
    color: #b8b8b8;
    line-height: 1.8;
}

.solution-benefits {
    margin-bottom: 25px;
}

.solution-benefits h4 {
    color: #00d4ff;
    font-size: 1rem;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.benefits-list {
    list-style: none;
}

.benefits-list li {
    padding: 6px 0;
    padding-left: 25px;
    position: relative;
    color: #b8b8b8;
    font-size: 0.9rem;
}

.benefits-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #00d4ff;
    font-weight: bold;
}

.solution-stats {
    padding: 20px 0;
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 25px;
}

.stat {
    text-align: center;
}

.stat-value {
    color: #00d4ff;
    font-size: 1.5rem;
    font-weight: 700;
}

.stat-label {
    color: #888;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 5px;
}

.solution-btn {
    align-self: flex-start;
    padding: 12px 30px;
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    color: #000;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.solution-btn:hover {
    box-shadow: 0 15px 30px rgba(0, 212, 255, 0.3);
    transform: translateY(-2px);
}

/* --- cases.html --- */
.cases-section {
    padding: 80px 60px;
    background-color: #0a0e27;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 50px;
    margin-bottom: 80px;
}

.case-card {
    background: linear-gradient(135deg, rgba(26, 42, 74, 0.5) 0%, rgba(10, 31, 58, 0.5) 100%);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
}

.case-card:hover {
    background: linear-gradient(135deg, rgba(26, 42, 74, 0.8) 0%, rgba(10, 31, 58, 0.8) 100%);
    border-color: rgba(0, 212, 255, 0.6);
    transform: translateY(-15px);
    box-shadow: 0 30px 60px rgba(0, 212, 255, 0.25);
}

.case-image {
    width: 100%;
    height: 220px;
    background: linear-gradient(135deg, #1a3a4a 0%, #0a1a2a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: rgba(0, 212, 255, 0.2);
}

.case-body {
    padding: 40px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.case-category {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(0, 212, 255, 0.15);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 20px;
    color: #00d4ff;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
    width: fit-content;
}

.case-card h3 {
    font-size: 1.6rem;
    color: #ffffff;
    margin-bottom: 12px;
    font-weight: 700;
}

.case-company {
    color: #00d4ff;
    font-size: 0.9rem;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.case-description {
    color: #b8b8b8;
    line-height: 1.8;
    margin-bottom: 25px;
    flex-grow: 1;
}

.case-results {
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
}

.case-results h4 {
    color: #00d4ff;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.result-item {
    font-size: 0.9rem;
    color: #a0a0a0;
}

.result-value {
    color: #00d4ff;
    font-weight: 700;
    font-size: 1rem;
}

.case-btn {
    padding: 12px 24px;
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    color: #000;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    width: 100%;
}

.case-btn:hover {
    box-shadow: 0 15px 30px rgba(0, 212, 255, 0.3);
    transform: translateY(-2px);
}

/* --- news.html --- */
.news-section {
    padding: 80px 60px;
    background-color: #0a0e27;
}

.news-filters {
    text-align: center;
    margin-bottom: 60px;
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.filter-tag {
    padding: 10px 20px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 20px;
    color: #00d4ff;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

.filter-tag:hover,
.filter-tag.active {
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    color: #000;
    border-color: #00d4ff;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.news-card {
    background: linear-gradient(135deg, rgba(26, 42, 74, 0.5) 0%, rgba(10, 31, 58, 0.5) 100%);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 15px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    background: linear-gradient(135deg, rgba(26, 42, 74, 0.8) 0%, rgba(10, 31, 58, 0.8) 100%);
    border-color: rgba(0, 212, 255, 0.6);
    transform: translateY(-15px);
    box-shadow: 0 30px 60px rgba(0, 212, 255, 0.25);
}

.news-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #1a3a4a 0%, #0a1a2a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
    overflow: hidden;
}

.news-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent, rgba(0, 212, 255, 0.1));
}

.news-body {
    padding: 30px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.news-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 0.85rem;
}

.news-date {
    color: #00d4ff;
    font-weight: 600;
}

.news-category {
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: rgba(0, 212, 255, 0.1);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
}

.news-card h3 {
    font-size: 1.3rem;
    color: #ffffff;
    margin-bottom: 12px;
    font-weight: 700;
    line-height: 1.4;
}

.news-card p {
    color: #b8b8b8;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.news-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.tag {
    display: inline-block;
    padding: 4px 10px;
    background: rgba(0, 212, 255, 0.15);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 4px;
    color: #00d4ff;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.news-btn {
    padding: 10px 20px;
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    color: #000;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    align-self: flex-start;
}

.news-btn:hover {
    box-shadow: 0 15px 30px rgba(0, 212, 255, 0.3);
    transform: translateY(-2px);
}

.load-more {
    text-align: center;
    padding: 40px;
}

.load-more-btn {
    padding: 14px 40px;
    background: linear-gradient(135deg, #00d4ff, #0099ff);
    color: #000;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.load-more-btn:hover {
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.35);
    transform: translateY(-3px);
}

/* --- 4. 响应式设计 --- */

@media (max-width: 768px) {
    nav {
        padding: 0 20px;
        height: 70px;
    }

    .logo img {
        height: 50px;
    }

    /* 移动端显示汉堡按钮 */
    .nav-toggle {
        display: flex;
    }

    /* 隐藏桌面端菜单 */
    .nav-menu {
        display: none;
    }

    /* 显示移动端菜单 */
    .nav-menu.show {
        display: flex;
        position: fixed;
        top: 70px; /* 导航栏高度 */
        left: 0;
        right: 0;
        background: rgba(10, 14, 39, 0.98);
        flex-direction: column;
        gap: 18px;
        padding: 18px 20px 30px;
        z-index: 999;
        width: 100vw;
    }

    .nav-menu li {
        text-align: center;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

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

    .cta-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .btn {
        width: 100%;
        padding: 14px 20px;
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .features,
    .products,
    .contact,
    .products-section {
        padding: 60px 20px;
    }

    .page-header,
    .breadcrumb {
        padding: 40px 20px;
        margin-top: 70px;
    }

    .page-header h1 {
        font-size: 2.5rem;
    }

    footer {
        padding: 40px 20px;
    }

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

/* 针对不同页面的微调 */
/* about.html, cases.html, news.html, solutions.html, technology.html */
@media (max-width: 768px) {
    .company-hero, .about-section, .stats-section, .values-section,
    .cases-section, .news-section, .solutions-section, .tech-section,
    .patents-section, .achievements-section {
        padding: 40px 20px;
    }

    .company-hero h1 {
        font-size: 2rem;
    }

    .about-content, .cases-grid, .news-grid, .solutions-grid, .tech-grid,
    .patents-grid, .achievements-grid {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 0;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        direction: ltr !important;
    }

    .timeline-item:nth-child(even) .timeline-content {
        direction: ltr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 25px;
    }
}