/* CSS 变量系统 - 统一设计令牌 */
:root {
  /* 色彩系统 - 专业蓝色调（更柔和协调） */
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-300: #93c5fd;
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;
  
  /* 辅助色 - 温暖的蓝紫色 */
  --accent-400: #818cf8;
  --accent-500: #6366f1;
  --accent-600: #4f46e5;
  
  /* 功能色 */
  --success-500: #10b981;
  --warning-500: #f59e0b;
  --error-500: #ef4444;
  
  /* 中性色 - 温暖灰度层次 */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* 语义化颜色 */
  --color-primary: var(--primary-600);
  --color-primary-hover: var(--primary-700);
  --color-primary-active: var(--primary-800);
  --color-accent: var(--accent-500);
  --color-success: var(--success-500);
  --color-warning: var(--warning-500);
  --color-error: var(--error-500);
  
  /* 文本颜色 */
  --text-primary: var(--gray-800);
  --text-secondary: var(--gray-600);
  --text-tertiary: var(--gray-500);
  --text-light: var(--gray-400);
  
  /* 背景颜色 */
  --bg-primary: #ffffff;
  --bg-secondary: var(--gray-50);
  --bg-tertiary: var(--gray-100);
  
  /* 边框颜色 */
  --border-light: var(--gray-200);
  --border-medium: var(--gray-300);
  --border-strong: var(--gray-400);
  
  /* 间距系统 - 8px 基准 */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* 字体大小系统 */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  
  /* 行高系统 */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
  
  /* 字重系统 */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;
  
  /* 圆角系统 */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;
  
  /* 阴影系统 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* 过渡效果 */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* 断点系统 */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
  
  /* 容器最大宽度 */
  --container-max: 1200px;
}

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

/* 清除浮动 */
.container::after {
    content: '';
    display: table;
    clear: both;
}

/* 导航栏 - 现代化设计 */
header {
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition-base);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

header.scrolled {
    box-shadow: var(--shadow-md);
}

nav {
    padding: var(--space-5) 0;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 48px;
    transition: var(--transition-base);
    object-fit: contain;
}

.logo img:hover {
    transform: scale(1.02);
}

.nav-menu {
    list-style: none;
    display: flex;
    align-items: center;
    gap: var(--space-10);
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: var(--font-medium);
    transition: var(--transition-base);
    padding: var(--space-3) 0;
    font-size: var(--text-sm);
    letter-spacing: 0.3px;
    position: relative;
    display: inline-block;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--accent-400));
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

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

.nav-menu a.active {
    color: var(--color-primary);
    font-weight: var(--font-semibold);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: var(--space-1);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    z-index: 1001;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

.hamburger {
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
}

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

/* 移动端菜单动画 */
.mobile-menu-btn.active .hamburger {
    background-color: transparent;
}

.mobile-menu-btn.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-btn.active .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* 导航栏滚动效果 */
header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}

header.scrolled .logo img {
    height: 45px;
}

/* 英雄区 - 现代化设计 */
.hero {
    background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-600) 50%, var(--primary-500) 100%);
    color: #ffffff;
    padding: var(--space-24) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
    margin-bottom: var(--space-16);
    box-shadow: var(--shadow-xl);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI2MCIgaGVpZ2h0PSI2MCI+PGRlZnM+PHBhdHRlcm4gaWQ9ImdyaWQiIHdpZHRoPSI2MCIgaGVpZ2h0PSI2MCIgcGF0dGVyblVuaXRzPSJ1c2VyU3BhY2VPblVzZSI+PHBhdGggZD0iTSAxMCAwIEwgMCAwIDAgMTAiIGZpbGw9Im5vbmUiIHN0cm9rZT0id2hpdGUiIHN0cm9rZS1vcGFjaXR5PSIwLjA1IiBzdHJva2Utd2lkdGg9IjEiLz48L3BhdHRlcm4+PC9kZWZzPjxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JpZCkiLz48L3N2Zz4=');
    opacity: 0.3;
    animation: moveBackground 20s linear infinite;
}

@keyframes moveBackground {
    0% { background-position: 0 0; }
    100% { background-position: 60px 60px; }
}

.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, var(--text-6xl));
    margin-bottom: var(--space-8);
    font-weight: var(--font-extrabold);
    text-shadow: var(--shadow-lg);
    letter-spacing: -0.02em;
    line-height: var(--leading-tight);
    animation: fadeInUp 0.8s ease-out;
}

.hero p {
    font-size: clamp(1.125rem, 3vw, var(--text-xl));
    margin-bottom: var(--space-12);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
    line-height: var(--leading-relaxed);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* 英雄区按钮组 */
.hero .btn-group {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

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

.stats {
    display: flex;
    justify-content: center;
    gap: var(--space-16);
    margin-top: var(--space-16);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: var(--shadow-lg);
}

.stat-item .number {
    display: block;
    font-size: clamp(2rem, 4vw, var(--text-4xl));
    font-weight: var(--font-extrabold);
    margin-bottom: var(--space-2);
}

.stat-item .label {
    display: block;
    font-size: var(--text-base);
    opacity: 0.9;
}

/* 通用按钮样式 - 现代化设计 */
.btn {
    display: inline-block;
    padding: var(--space-4) var(--space-8);
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    color: #fff;
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: var(--font-semibold);
    transition: var(--transition-base);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    position: relative;
    overflow: hidden;
    font-size: var(--text-sm);
    letter-spacing: 0.5px;
    border: none;
    cursor: pointer;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: var(--transition-slow);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
    background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-800) 100%);
}

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

.btn:active {
    transform: translateY(0);
}

/* 按钮变体 */
.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: none;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

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

.btn:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4);
}

/* 通用 Section 样式 - 现代化设计 */
section {
    padding: var(--space-24) 0;
}

/* 通用 Section 背景优化 */
section:nth-of-type(odd) {
    background-color: var(--bg-primary);
}

section:nth-of-type(even) {
    background-color: var(--bg-secondary);
}

/* 关于我们 - 现代化设计 */
.about-section {
    padding: var(--space-24) 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--primary-50) 100%);
    text-align: center;
    position: relative;
}

.about-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary-500), transparent);
}

.about-section h2 {
    font-size: clamp(2rem, 4vw, var(--text-4xl));
    margin-bottom: var(--space-8);
    color: var(--text-primary);
    position: relative;
    display: inline-block;
    font-weight: var(--font-bold);
    letter-spacing: -0.01em;
}

.about-section h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--accent-400));
    border-radius: var(--radius-full);
}

.about-section p {
    font-size: var(--text-lg);
    margin-bottom: var(--space-10);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
}

/* 核心业务 */
.core-business-section {
    padding: 100px 0;
    background-color: #f8f9fa;
    text-align: center;
    position: relative;
}

.core-business-section h2 {
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #333;
    position: relative;
    display: inline-block;
}

.core-business-section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: #007bff;
}

.business-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.category {
    background-color: #fff;
    padding: 35px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    text-align: left;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background-color: #007bff;
}

.category:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.category h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #007bff;
}

.category ul {
    list-style: none;
}

.category li {
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
    color: #555;
}

.category li::before {
    content: "✓";
    color: #007bff;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 成功案例 */
.cases-section {
    padding: 100px 0;
    background-color: #fff;
    text-align: center;
    position: relative;
}

.cases-section h2 {
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #333;
    position: relative;
    display: inline-block;
}

.cases-section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: #007bff;
}

.case-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.case-item {
    background-color: #f8f9fa;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    position: relative;
    text-align: left;
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.case-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: all 0.3s ease;
}

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

.case-item h3 {
    font-size: 1.3rem;
    margin: 20px;
    color: #007bff;
}

.case-item p {
    margin: 0 20px 20px;
    color: #555;
    line-height: 1.6;
}

/* 服务介绍 */
.services-section {
    padding: 100px 0;
    background-color: #f8f9fa;
    text-align: center;
    position: relative;
}

.services-section h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: #333;
    position: relative;
    display: inline-block;
}

.services-section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: #007bff;
}

.services-section p {
    font-size: 1.1rem;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: #555;
    line-height: 1.8;
}

/* 联系我们 */
.contact-section {
    padding: var(--space-24) 0;
    background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-600) 50%, var(--primary-500) 100%);
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    box-shadow: 0 -10px 40px rgba(37, 99, 235, 0.3);
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI2MCIgaGVpZ2h0PSI2MCI+PGRlZnM+PHBhdHRlcm4gaWQ9ImdyaWQiIHdpZHRoPSI2MCIgaGVpZ2h0PSI2MCIgcGF0dGVyblVuaXRzPSJ1c2VyU3BhY2VPblVzZSI+PHBhdGggZD0iTSAxMCAwIEwgMCAwIDAgMTAiIGZpbGw9Im5vbmUiIHN0cm9rZT0id2hpdGUiIHN0cm9rZS1vcGFjaXR5PSIwLjA1IiBzdHJva2Utd2lkdGg9IjEiLz48L3BhdHRlcm4+PC9kZWZzPjxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JpZCkiLz48L3N2Zz4=');
    opacity: 0.4;
    animation: moveBackground 20s linear infinite;
}

@keyframes moveBackground {
    0% { background-position: 0 0; }
    100% { background-position: 60px 60px; }
}

.contact-section::after {
    content: '';
    position: absolute;
    top: -30%;
    right: -15%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.contact-section .container {
    position: relative;
    z-index: 1;
}

.contact-section h2 {
    font-size: clamp(2rem, 5vw, var(--text-5xl));
    margin-bottom: var(--space-8);
    position: relative;
    display: inline-block;
    font-weight: var(--font-extrabold);
    letter-spacing: -0.02em;
}

.contact-section h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, rgba(255,255,255,0.5), rgba(255,255,255,1), rgba(255,255,255,0.5));
    border-radius: var(--radius-full);
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    margin-bottom: var(--space-10);
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    background: rgba(255, 255, 255, 0.15);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-xl);
    transition: var(--transition-base);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.info-item:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.info-item .icon {
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-item .text {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
}

/* 页脚 - 现代化设计 */
footer {
    background: linear-gradient(180deg, var(--primary-900) 0%, var(--gray-800) 100%);
    color: var(--gray-300);
    padding: var(--space-20) 0 var(--space-8);
    position: relative;
    border-top: 1px solid var(--primary-700);
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-400), var(--primary-500));
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-logo img {
    height: 56px;
    transition: var(--transition-base);
    margin-bottom: var(--space-4);
    filter: brightness(0) invert(1);
}

.footer-logo img:hover {
    transform: scale(1.05);
    filter: brightness(0) invert(1) drop-shadow(0 4px 8px rgba(255, 255, 255, 0.2));
}

.footer-links h4,
.footer-contact h4 {
    font-size: var(--text-base);
    margin-bottom: var(--space-5);
    color: #ffffff;
    font-weight: var(--font-semibold);
    position: relative;
    padding-bottom: var(--space-3);
}

.footer-links h4::after,
.footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-400), transparent);
    border-radius: var(--radius-full);
}

.footer-links ul,
.footer-contact ul {
    list-style: none;
}

.footer-links li,
.footer-contact li {
    margin-bottom: var(--space-3);
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition-base);
    padding: var(--space-2) 0;
    display: inline-block;
    font-size: var(--text-sm);
}

.footer-links a:hover {
    color: var(--primary-300);
    transform: translateX(5px);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    color: var(--gray-400);
    font-size: var(--text-sm);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    margin-bottom: var(--space-2);
    color: var(--gray-400);
    font-size: var(--text-sm);
}

.footer-bottom p:last-child {
    margin-bottom: 0;
    font-size: var(--text-xs);
    color: var(--gray-500);
}

.footer-bottom a {
    color: var(--primary-300);
    text-decoration: none;
    transition: var(--transition-base);
    font-weight: var(--font-medium);
}

.footer-bottom a:hover {
    color: var(--primary-200);
    text-decoration: underline;
}

/* 响应式设计 - 多断点系统 */
@media (max-width: 768px) {
    /* 移动端导航 */
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--space-6);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-base);
        gap: var(--space-2);
        max-height: calc(100vh - 80px);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu li {
        display: block;
        width: 100%;
    }
    
    .nav-menu a {
        display: block;
        padding: var(--space-4);
        text-align: center;
        min-height: 44px; /* WCAG 触摸目标标准 */
    }
    
    /* 英雄区响应式 */
    .hero {
        padding: var(--space-16) 0;
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    }
    
    .hero h1 {
        font-size: clamp(2rem, 8vw, var(--text-4xl));
    }
    
    .hero p {
        font-size: var(--text-base);
    }
    
    .stats {
        flex-direction: column;
        gap: var(--space-6);
    }
    
    .stat-item {
        padding: var(--space-4);
    }
    
    /* 网格布局响应式 */
    .business-categories,
    .case-list,
    .grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    /* 联系信息响应式 */
    .contact-info {
        flex-direction: column;
        gap: var(--space-6);
    }
    
    /* 页脚响应式 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
        text-align: center;
    }
    
    .footer-links h4::after,
    .footer-contact h4::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-links a:hover {
        transform: none;
    }
}

/* 平板设备优化 */
@media (min-width: 769px) and (max-width: 1024px) {
    .hero {
        padding: var(--space-20) 0;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    /* 增大触摸目标 */
    .btn,
    .nav-menu a,
    .category-btn {
        min-height: 44px;
        padding: var(--space-3) var(--space-4);
    }
    
    /* 移除悬停效果 */
    .card:hover,
    .stat-item:hover {
        transform: none;
    }
    
    /* 优化点击反馈 */
    .btn:active {
        transform: scale(0.98);
    }
}

/* 大屏设备优化 */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }
    
    .hero {
        padding: var(--space-24) 0;
    }
}

/* 页面标题 - 现代化设计 */
.page-header {
    background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-600) 100%);
    color: #fff;
    padding: var(--space-20) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI2MCIgaGVpZ2h0PSI2MCI+PGRlZnM+PHBhdHRlcm4gaWQ9ImdyaWQiIHdpZHRoPSI2MCIgaGVpZ2h0PSI2MCIgcGF0dGVyblVuaXRzPSJ1c2VyU3BhY2VPblVzZSI+PHBhdGggZD0iTSAxMCAwIEwgMCAwIDAgMTAiIGZpbGw9Im5vbmUiIHN0cm9rZT0id2hpdGUiIHN0cm9rZS1vcGFjaXR5PSIwLjA1IiBzdHJva2Utd2lkdGg9IjEiLz48L3BhdHRlcm4+PC9kZWZzPjxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JpZCkiLz48L3N2Zz4=');
    opacity: 0.3;
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    font-size: clamp(2rem, 5vw, var(--text-5xl));
    margin-bottom: var(--space-4);
    font-weight: var(--font-extrabold);
    letter-spacing: -0.02em;
}

.page-header p {
    font-size: clamp(1rem, 2.5vw, var(--text-lg));
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 公司简介 */
.company-intro {
    padding: 100px 0;
    background-color: #fff;
}

.intro-content {
    display: flex;
    gap: 50px;
    align-items: center;
}

.intro-text {
    flex: 1;
}

.intro-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.intro-image {
    flex: 1;
}

.intro-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* 发展历程 */
.company-history {
    padding: 100px 0;
    background-color: #f5f5f5;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background-color: #007bff;
    transform: translateX(-50%);
}

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

.timeline-date {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    background-color: #007bff;
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: bold;
}

.timeline-content {
    width: 45%;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: 0;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: 55%;
}

.timeline-content h3 {
    margin-bottom: 10px;
    color: #007bff;
}

/* 团队介绍 */
.team-intro {
    padding: 100px 0;
    background-color: #fff;
    text-align: center;
}

.team-intro p {
    margin-bottom: 50px;
    font-size: 1.1rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.team-members {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.team-member {
    background-color: #f5f5f5;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}

.team-member img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin-bottom: 20px;
    object-fit: cover;
}

.team-member h3 {
    margin-bottom: 5px;
    color: #007bff;
}

.team-member p {
    margin-bottom: 10px;
    font-size: 1rem;
}

/* 企业文化 */
.company-culture {
    padding: 100px 0;
    background-color: #f5f5f5;
    text-align: center;
}

.culture-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.culture-value {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.culture-value h3 {
    margin-bottom: 20px;
    color: #007bff;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .intro-content {
        flex-direction: column;
        text-align: center;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-date {
        left: 20px;
        transform: none;
    }
    
    .timeline-content {
        width: calc(100% - 60px);
        margin-left: 60px !important;
    }
}

/* 专业的技术解决方案 */
.tech-solutions {
    padding: 100px 0;
    background-color: #fff;
}

.solution-list {
    margin-top: 50px;
}

.solution-item {
    display: flex;
    gap: 30px;
    margin-bottom: 50px;
    align-items: center;
}

.solution-image {
    flex: 1;
}

.solution-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.solution-content {
    flex: 1;
}

.solution-content h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #007bff;
}

.solution-content p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.solution-content ul {
    list-style: none;
}

.solution-content li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.solution-content li::before {
    content: "•";
    color: #007bff;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 技术咨询服务 */
.tech-consulting {
    padding: 100px 0;
    background-color: #f5f5f5;
}

.consulting-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.consulting-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.consulting-item h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: #007bff;
}

.consulting-item p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.consulting-item ul {
    list-style: none;
}

.consulting-item li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.consulting-item li::before {
    content: "•";
    color: #007bff;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 数字文化创意服务 */
.digital-creative {
    padding: 100px 0;
    background-color: #fff;
}

.creative-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.creative-item {
    background-color: #f5f5f5;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.creative-item h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: #007bff;
}

.creative-item p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.creative-item ul {
    list-style: none;
}

.creative-item li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.creative-item li::before {
    content: "•";
    color: #007bff;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 行业解决方案 */
.industry-solutions {
    padding: 100px 0;
    background-color: #f5f5f5;
    text-align: center;
}

.industry-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
    margin-bottom: 50px;
}

.industry-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: left;
}

.industry-item h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: #007bff;
}

.industry-item p {
    font-size: 1.1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .solution-item {
        flex-direction: column;
        text-align: center;
    }
    
    .solution-content ul {
        text-align: left;
    }
}

/* 快递物流解决方案 */
.logistics-solution {
    padding: 100px 0;
    background-color: #fff;
}

.ecommerce-solution {
    padding: 100px 0;
    background-color: #f5f5f5;
}

.hr-solution {
    padding: 100px 0;
    background-color: #fff;
}

.solution-content {
    display: flex;
    gap: 50px;
    align-items: center;
    margin-top: 50px;
}

.solution-image {
    flex: 1;
}

.solution-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.solution-details {
    flex: 1;
}

.solution-details h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: #007bff;
}

.solution-details ul {
    list-style: none;
    margin-bottom: 30px;
}

.solution-details li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.solution-details li::before {
    content: "•";
    color: #007bff;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 其他行业解决方案 */
.other-solutions {
    padding: 100px 0;
    background-color: #f5f5f5;
    text-align: center;
}

.other-solutions p {
    margin-bottom: 50px;
    font-size: 1.1rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.other-solutions .solution-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.other-solutions .solution-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: left;
}

.other-solutions .solution-item h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: #007bff;
}

.other-solutions .solution-item p {
    font-size: 1.1rem;
    margin-bottom: 0;
    text-align: left;
    max-width: 100%;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .solution-content {
        flex-direction: column;
        text-align: center;
    }
    
    .solution-details ul {
        text-align: left;
    }
}

/* 案例分类 */
.case-categories {
    padding: 50px 0;
    background-color: #f5f5f5;
}

.categories {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.category-btn {
    padding: 10px 20px;
    background-color: #fff;
    color: #333;
    text-decoration: none;
    border-radius: 20px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.category-btn:hover,
.category-btn.active {
    background-color: #007bff;
    color: #fff;
}

/* 案例列表 */
.case-list-section {
    padding: 100px 0;
    background-color: #fff;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.case-item {
    background-color: #f5f5f5;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

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

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

.case-item:hover .case-image img {
    transform: scale(1.1);
}

.case-content {
    padding: 20px;
}

.case-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #007bff;
}

.case-category {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 15px;
}

.case-description {
    margin-bottom: 20px;
    font-size: 1rem;
}

.case-detail-btn {
    display: inline-block;
    padding: 8px 16px;
    background-color: #007bff;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
}

.case-detail-btn:hover {
    background-color: #0056b3;
}

/* 案例详情 */
.case-detail-section {
    padding: 100px 0;
    background-color: #f5f5f5;
}

.case-detail {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.case-detail-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.case-detail-header h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #007bff;
}

.case-detail-content {
    display: flex;
    gap: 50px;
}

.case-detail-image {
    flex: 1;
}

.case-detail-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.case-detail-info {
    flex: 1;
}

.case-detail-info h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #333;
    margin-top: 30px;
}

.case-detail-info h4:first-child {
    margin-top: 0;
}

.case-detail-info p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.case-detail-info ul {
    list-style: none;
    margin-bottom: 20px;
}

.case-detail-info li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.case-detail-info li::before {
    content: "•";
    color: #007bff;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.customer-review {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
}

.review-text {
    font-style: italic;
    margin-bottom: 10px;
}

.review-author {
    font-weight: bold;
    color: #007bff;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .categories {
        flex-wrap: wrap;
    }
    
    .case-detail-content {
        flex-direction: column;
    }
}

/* 服务优势 */
.service-advantages {
    padding: 100px 0;
    background-color: #fff;
    text-align: center;
}

.advantages-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.advantage-item {
    background-color: #f5f5f5;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

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

.advantage-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #007bff;
}

.advantage-item p {
    font-size: 1.1rem;
}

/* 服务流程 */
.service-process {
    padding: 100px 0;
    background-color: #f5f5f5;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.process-step {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
    position: relative;
}

.step-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    background-color: #007bff;
    color: #fff;
    border-radius: 50%;
    line-height: 50px;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 20px;
}

.process-step h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #007bff;
}

.process-step p {
    font-size: 1rem;
}

/* 服务内容 */
.service-content {
    padding: 100px 0;
    background-color: #fff;
}

.content-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.content-category {
    background-color: #f5f5f5;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.content-category h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: #007bff;
}

.content-category ul {
    list-style: none;
}

.content-category li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.content-category li::before {
    content: "•";
    color: #007bff;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 服务案例 */
.service-cases {
    padding: 100px 0;
    background-color: #f5f5f5;
    text-align: center;
}

.cases-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
    margin-bottom: 50px;
}

.service-cases .case-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: left;
}

.service-cases .case-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #007bff;
}

.service-cases .case-item p {
    font-size: 1.1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .advantages-list,
    .process-steps,
    .content-categories,
    .cases-list {
        grid-template-columns: 1fr;
    }
}

/* 联系方式 */
.contact-info-section {
    padding: var(--space-24) 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--primary-50) 100%);
}

.contact-info-section h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, var(--text-4xl));
    margin-bottom: var(--space-12);
    color: var(--text-primary);
    font-weight: var(--font-bold);
}

.contact-info-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: start;
}

.contact-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.contact-item {
    background: var(--bg-primary);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    border: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-3);
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-300);
}

.contact-icon {
    font-size: 3rem;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-2);
}

.contact-text h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
    color: var(--primary-600);
    font-weight: var(--font-semibold);
}

.contact-text p {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

.contact-map {
    background: var(--bg-primary);
    padding: var(--space-4);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.contact-map img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
}

.contact-map img:hover {
    transform: scale(1.02);
}

/* 在线咨询 - 现代化设计 */
.contact-form-section {
    padding: var(--space-24) 0;
    background: linear-gradient(180deg, var(--primary-50) 0%, var(--bg-secondary) 100%);
}

.contact-form-section h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, var(--text-4xl));
    margin-bottom: var(--space-12);
    color: var(--text-primary);
    font-weight: var(--font-bold);
}

form {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-primary);
    padding: var(--space-10);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-light);
}

.form-group {
    margin-bottom: var(--space-6);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    font-size: var(--text-sm);
    letter-spacing: 0.3px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-4);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-family: inherit;
    transition: var(--transition-base);
    background-color: var(--bg-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

form button {
    display: block;
    width: 100%;
    padding: var(--space-4) var(--space-8);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: #fff;
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    cursor: pointer;
    transition: var(--transition-base);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    letter-spacing: 0.5px;
}

form button:hover {
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

form button:active {
    transform: translateY(0);
}

/* 常见问题 - 现代化设计 */
.faq-section {
    padding: var(--space-24) 0;
    background: var(--bg-primary);
}

.faq-section h2 {
    text-align: center;
    font-size: clamp(2rem, 4vw, var(--text-4xl));
    margin-bottom: var(--space-12);
    color: var(--text-primary);
    font-weight: var(--font-bold);
}

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

.faq-item {
    margin-bottom: var(--space-4);
    padding: var(--space-6);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-300);
    transform: translateX(5px);
}

.faq-item h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-3);
    color: var(--primary-600);
    font-weight: var(--font-semibold);
}

.faq-item p {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .contact-info-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .contact-details {
        grid-template-columns: 1fr;
    }
    
    .contact-item {
        padding: var(--space-5);
    }
    
    .contact-icon {
        width: 60px;
        height: 60px;
        font-size: 2.5rem;
    }
    
    form {
        padding: var(--space-6);
    }
}

/* 清除浮动 */
.clearfix::after {
    content: "";
    display: table;
    clear: both;
}