/* 特防科技官网 - 全局样式表 (线上版配色) */
/* 优化方向：上下深色（Hero+Footer），中间浅色内容区，白色卡片，蓝色强调 */

:root {
    /* 主色调 - 改为浅色主题 */
    --primary-color: #f4f9ff;
    --primary-dark: #e8f0f7;
    --primary-light: #ffffff;
    --primary-mid: #dbe6f2;
    
    /* 次要蓝 - 改为浅色系 */
    --secondary-color: #dbe6f2;
    --secondary-mid: #ced9e5;
    --secondary-light: #00579a;
    
    /* 点缀色 - 改为蓝色系（不用青蓝） */
    --accent-color: #00579a;
    --accent-light: #3275b4;
    --accent-dark: #00579a;
    --accent-glow: rgba(0, 87, 154, 0.3);
    
    /* 辅助点缀 - 改为蓝色系 */
    --cyan-color: #3275b4;
    --cyan-light: #5ce1ff;
    --cyan-glow: rgba(50, 117, 180, 0.3);
    
    /* 文字颜色 - 改为深色文字 */
    --text-primary: #030c17;
    --text-secondary: #0b1723;
    --text-muted: #576574;
    
    /* 卡片背景 - 改为白色 */
    --card-bg: #ffffff;
    --card-bg-light: #f9fcff;
    --glass-bg: rgba(255, 255, 255, 0.9);
    
    /* 边框 - 改为浅色 */
    --border-color: #ced9e5;
    --border-light: #dbe6f2;
    --border-accent: rgba(0, 87, 154, 0.3);
    
    /* 渐变背景 - 浅色渐变 */
    --gradient-primary: linear-gradient(135deg, #f4f9ff 0%, #e8f0f7 50%, #dbe6f2 100%);
    --gradient-hero: linear-gradient(180deg, #0a1520 0%, #0d2137 50%, #0a2540 100%);
    --gradient-accent: linear-gradient(135deg, #00579a, #3275b4);
    --gradient-blue: linear-gradient(135deg, #00579a 0%, #3275b4 50%, #4a8fc7 100%);
    --gradient-dark: linear-gradient(180deg, rgba(8, 12, 20, 0.95) 0%, rgba(13, 22, 35, 0.9) 100%);
    
    /* 状态颜色 */
    --success-color: #3275b4;
    --warning-color: #f59e0b;
    --error-color: #ff6b6b;
    
    /* 阴影和光效 */
    --shadow: 0 10px 40px rgba(0, 87, 154, 0.1);
    --shadow-glow: 0 0 30px rgba(0, 87, 154, 0.1);
    --shadow-card: 0 4px 20px rgba(0, 87, 154, 0.08);
    --glow-accent: 0 0 20px rgba(0, 87, 154, 0.2), 0 0 40px rgba(0, 87, 154, 0.1);
    --glow-cyan: 0 0 20px rgba(50, 117, 180, 0.2), 0 0 40px rgba(50, 117, 180, 0.1);
    
    /* 过渡动画 */
    --transition: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--primary-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(ellipse at 50% 0%, rgba(0, 87, 154, 0.05) 0%, transparent 50%);
}

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

ul, ol {
    list-style: none;
}

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

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

/* ========== 通用容器 ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 100px 0;
    position: relative;
    background: var(--primary-color);
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 50% 0%, rgba(0, 87, 154, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

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

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-color) 50%, var(--cyan-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(0, 87, 154, 0.1));
}

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

/* ========== 头部导航 ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
    box-shadow: 0 2px 20px rgba(0, 87, 154, 0.08);
}

.header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 87, 154, 0.2), transparent);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(0, 87, 154, 0.12);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

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

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient-blue);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 87, 154, 0.3);
    position: relative;
}

.logo-icon::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 12px;
    background: var(--gradient-accent);
    opacity: 0;
    z-index: -1;
    transition: var(--transition);
}

.logo-icon:hover::after {
    opacity: 0.3;
    filter: blur(8px);
}

.logo-text h1 {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-primary);
}

.logo-text span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.nav-menu {
    display: flex;
    gap: 35px;
}

.nav-menu a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding: 8px 0;
    position: relative;
}

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

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--accent-color);
}

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

.nav-phone {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--accent-color);
    font-weight: 600;
}

.nav-phone svg {
    width: 20px;
    height: 20px;
}

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

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ========== 按钮样式 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-accent);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(0, 87, 154, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 87, 154, 0.4);
}

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

.btn-secondary:hover {
    background: var(--accent-color);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(0, 87, 154, 0.3);
}

.btn-outline {
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    background: var(--card-bg);
}

/* ========== 卡片样式 ========== */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    transition: var(--transition);
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 87, 154, 0.06);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 87, 154, 0.2), transparent);
    opacity: 0;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--border-accent);
    box-shadow: 0 12px 40px rgba(0, 87, 154, 0.1);
}

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

.card-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-blue);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.8rem;
    box-shadow: 0 4px 15px rgba(0, 87, 154, 0.25);
}

.card-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

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

/* ========== 页面头部 ========== */
.page-header {
    padding: 140px 0 80px;
    background: var(--gradient-hero);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 30% 50%, rgba(0, 87, 154, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 50%, rgba(50, 117, 180, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

.breadcrumb a:hover {
    color: #ffffff;
}

.breadcrumb span {
    color: var(--accent-light);
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #ffffff, var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-header p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ========== 英雄区 ========== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
    background: var(--gradient-hero);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 87, 154, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 87, 154, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 30%, rgba(0, 87, 154, 0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(50, 117, 180, 0.15) 0%, transparent 40%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 87, 154, 0.2);
    border: 1px solid rgba(0, 87, 154, 0.4);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--accent-light);
    margin-bottom: 25px;
}

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

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #ffffff;
}

.hero h1 span {
    background: linear-gradient(135deg, #ffffff 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 35px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 50px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-light);
    margin-bottom: 5px;
}

.stat-item p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 0;
}

.hero-decoration {
    position: absolute;
    right: -100px;
    top: 50%;
    transform: translateY(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 87, 154, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: pulse 4s ease-in-out infinite;
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ========== 服务场景 ========== */
.service-scenes {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.scene-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px 25px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 87, 154, 0.06);
}

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

.scene-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 0%, rgba(0, 87, 154, 0.05) 0%, transparent 60%);
    opacity: 0;
    transition: var(--transition);
}

.scene-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-accent);
    box-shadow: 0 12px 40px rgba(0, 87, 154, 0.12);
}

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

.scene-card:hover::after {
    opacity: 1;
}

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

.scene-image {
    width: 100%;
    height: 180px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
}

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

.scene-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.scene-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 15px;
}

.scene-price {
    font-size: 1.1rem;
    color: var(--accent-color);
    font-weight: 600;
}

/* ========== 服务流程 ========== */
.process-steps {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: var(--gradient-accent);
    opacity: 0.3;
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--card-bg);
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-color);
    box-shadow: 0 4px 15px rgba(0, 87, 154, 0.15);
    transition: var(--transition);
}

.process-step:hover .step-number {
    background: var(--accent-color);
    color: #ffffff;
    box-shadow: 0 4px 20px rgba(0, 87, 154, 0.4);
}

.process-step h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

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

/* ========== 核心优势 ========== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.advantage-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 35px;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 87, 154, 0.06);
    position: relative;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 87, 154, 0.2), transparent);
    opacity: 0;
    transition: var(--transition);
}

.advantage-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 87, 154, 0.1);
}

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

.advantage-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-blue);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    font-size: 2rem;
    box-shadow: 0 4px 15px rgba(0, 87, 154, 0.25);
}

.advantage-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

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

/* ========== 案例列表 ========== */
.cases-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(0, 87, 154, 0.3);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.case-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 87, 154, 0.06);
}

.case-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-accent);
    box-shadow: 0 12px 40px rgba(0, 87, 154, 0.1);
}

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

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.case-tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--accent-color);
    color: #ffffff;
    padding: 5px 12px;
    border-radius: 5px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 4px 10px rgba(0, 87, 154, 0.3);
}

.case-content {
    padding: 25px;
}

.case-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.5;
    color: var(--text-primary);
}

.case-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.case-location {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

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

/* ========== 新闻列表 ========== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.news-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 87, 154, 0.06);
}

.news-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-accent);
    box-shadow: 0 12px 40px rgba(0, 87, 154, 0.1);
}

.news-image {
    height: 160px;
    background: var(--gradient-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    position: relative;
    overflow: hidden;
}

.news-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 87, 154, 0.1), rgba(50, 117, 180, 0.1));
}

.news-content {
    padding: 25px;
}

.news-category {
    display: inline-block;
    background: rgba(0, 87, 154, 0.1);
    color: var(--accent-color);
    padding: 4px 12px;
    border-radius: 5px;
    font-size: 0.8rem;
    margin-bottom: 12px;
    border: 1px solid rgba(0, 87, 154, 0.15);
}

.news-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--text-primary);
}

.news-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ========== 技术展示 ========== */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.tech-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 35px;
    display: flex;
    gap: 25px;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 87, 154, 0.06);
    position: relative;
    overflow: hidden;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-accent);
    opacity: 0;
    transition: var(--transition);
}

.tech-card:hover {
    border-color: var(--border-accent);
    box-shadow: 0 12px 40px rgba(0, 87, 154, 0.1);
}

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

.tech-icon {
    width: 80px;
    height: 80px;
    background: transparent;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    flex-shrink: 0;
    box-shadow: none;
}

.tech-info h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.tech-info p {
    color: var(--text-muted);
    line-height: 1.7;
}

/* ========== 关于我们 ========== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 25px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
}

.about-feature svg {
    color: var(--accent-color);
    flex-shrink: 0;
}

.about-feature span {
    font-size: 1rem;
    color: var(--text-secondary);
}

.about-image {
    background: var(--gradient-blue);
    border-radius: 20px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 87, 154, 0.25);
}

.about-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 30% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

/* 发展历程 */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--border-color);
}

.timeline-item {
    display: flex;
    margin-bottom: 40px;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}

.timeline-content {
    width: 45%;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
}

.timeline-year {
    color: var(--accent-color);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.timeline-content h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.timeline-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background: var(--accent-color);
    border-radius: 50%;
    border: 3px solid var(--primary-color);
    z-index: 1;
}

/* ========== 联系页面 ========== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
}

.contact-info h2 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: transparent;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
    box-shadow: none;
}

.contact-item h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.contact-item p {
    color: var(--text-muted);
}

.contact-form {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
}

.contact-form h2 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

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

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 87, 154, 0.1);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* ========== 服务详情页 ========== */
.service-detail {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

.service-main h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.service-main p {
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 20px;
}

.service-list {
    margin: 30px 0;
}

.service-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.service-list li svg {
    color: var(--accent-color);
    flex-shrink: 0;
    margin-top: 3px;
}

.service-sidebar {
    position: sticky;
    top: 100px;
}

.service-price-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 25px;
}

.price-header {
    text-align: center;
    margin-bottom: 25px;
}

.price-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

.price-unit {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.service-price-card h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    text-align: center;
    color: var(--text-primary);
}

.service-price-card ul li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.service-price-card ul li svg {
    color: var(--cyan-color);
}

/* ========== FAQ ========== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--border-accent);
}

.faq-question {
    width: 100%;
    padding: 20px 25px;
    background: none;
    color: var(--text-primary);
    font-size: 1.05rem;
    font-weight: 600;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-question svg {
    transition: var(--transition);
    color: var(--accent-color);
}

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

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

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

.faq-answer p {
    padding: 0 25px 20px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ========== FAQ直接展开样式 ========== */
.faq-question-open {
    width: 100%;
    padding: 20px 25px;
    background: var(--card-bg);
    color: var(--accent-dark);
    font-size: 1.05rem;
    font-weight: 600;
    text-align: left;
    border-left: 4px solid var(--accent-color);
    border-radius: 8px 8px 0 0;
}

.faq-answer-open {
    padding: 20px 25px;
    background: var(--card-bg);
    border-left: 4px solid var(--accent-color);
    border-top: 1px solid var(--border-light);
    border-radius: 0 0 8px 8px;
    margin-bottom: 15px;
}

.faq-answer-open p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 15px;
}

.faq-answer-open p:last-child {
    margin-bottom: 0;
}

.faq-answer-open ul {
    padding-left: 20px;
    margin-bottom: 15px;
}

.faq-answer-open ul li {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 8px;
    list-style: disc;
}

.faq-answer-open ul li strong {
    color: var(--accent-dark);
}

/* ========== 详情页模板 ========== */
.detail-content {
    max-width: 900px;
    margin: 0 auto;
}

.detail-content h2 {
    font-size: 1.8rem;
    margin: 35px 0 20px;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.detail-content h3 {
    font-size: 1.4rem;
    margin: 30px 0 15px;
    color: var(--text-primary);
}

.detail-content p {
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 20px;
}

.detail-content ul {
    margin: 20px 0;
    padding-left: 25px;
}

.detail-content ul li {
    color: var(--text-muted);
    line-height: 2;
    position: relative;
}

.detail-content ul li::before {
    content: '•';
    color: var(--accent-color);
    position: absolute;
    left: -15px;
}

.detail-meta {
    display: flex;
    gap: 30px;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin: 30px 0;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.detail-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.detail-meta span svg {
    color: var(--accent-color);
}

/* ========== 页脚 ========== */
.footer {
    background: rgba(8, 12, 20, 0.98);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 60px 0 30px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 87, 154, 0.3), transparent);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    margin-top: 15px;
    line-height: 1.7;
}

.footer-column h3 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: #ffffff;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-light);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 15px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
}

.footer-contact svg {
    flex-shrink: 0;
    margin-top: 3px;
    color: var(--accent-light);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-social a:hover {
    background: var(--accent-color);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(0, 87, 154, 0.3);
    transform: translateY(-3px);
}

/* ========== 悬浮按钮 ========== */
.floating-buttons {
    position: fixed;
    right: 20px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

.float-btn {
    width: 55px;
    height: 55px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 87, 154, 0.35);
    transition: var(--transition);
}

.float-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(0, 87, 154, 0.45);
}

.float-phone {
    background: var(--gradient-blue);
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .service-scenes {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-steps {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
    
    .process-steps::before {
        display: none;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .service-detail {
        grid-template-columns: 1fr;
    }
    
    .service-sidebar {
        position: static;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 30px rgba(0, 87, 154, 0.1);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .nav-phone {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 25px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title h2 {
        font-size: 2rem;
    }
    
    .service-scenes {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-grid,
    .news-grid,
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(odd) {
        flex-direction: row;
        padding-left: 50px;
    }
    
    .timeline-content {
        width: 100%;
    }
    
    .timeline-dot {
        left: 20px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
    }
    
    .page-header h1 {
        font-size: 1.8rem;
    }
    
    .floating-buttons {
        right: 15px;
        bottom: 20px;
    }
    
    .float-btn {
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }
}

/* ========== 统一预约CTA组件 ========== */
.cta-component {
    padding: 30px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.cta-component .cta-text {
    flex: 1;
    min-width: 200px;
}

.cta-component .cta-text h4 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.cta-component .cta-text p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.cta-component .cta-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.cta-component .cta-buttons .btn {
    padding: 10px 20px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.cta-component .cta-buttons .btn svg {
    width: 16px;
    height: 16px;
}