/* ========================================
   广州远舟集运供应链 - 现代渐变玻璃态风格
   设计理念：渐变、玻璃态、流动感
   ======================================== */

/* CSS 变量系统 */
:root {
    /* 主色调 - 优雅蓝色渐变 */
    --primary: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --primary-rgb: 30, 64, 175;
    
    /* 辅助色 - 亮青色 */
    --accent: #06b6d4;
    --accent-dark: #0891b2;
    --accent-light: #67e8f9;
    --accent-rgb: 6, 182, 212;
    
    /* 渐变色 */
    --gradient-1: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #60a5fa 100%);
    --gradient-2: linear-gradient(135deg, #06b6d4 0%, #0ea5e9 50%, #38bdf8 100%);
    --gradient-3: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    --gradient-4: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    --gradient-hero: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #3b82f6 100%);
    --gradient-bg: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #dbeafe 100%);
    
    /* 背景色 */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-glass: rgba(255, 255, 255, 0.7);
    --bg-glass-dark: rgba(255, 255, 255, 0.9);
    
    /* 文字颜色 */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    
    /* 边框 */
    --border-color: rgba(255, 255, 255, 0.5);
    --border-glass: rgba(255, 255, 255, 0.3);
    
    /* 功能色 */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    /* 玻璃效果 */
    --glass-blur: blur(20px);
    --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.15);
    --glass-border: 1px solid rgba(255, 255, 255, 0.5);
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 60px rgba(30, 64, 175, 0.3);
    --shadow-glow-accent: 0 0 60px rgba(6, 182, 212, 0.3);
    
    /* 间距 */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* 圆角 */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
    
    /* 过渡 */
    --transition-fast: 200ms 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);
    --transition-bounce: 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ========================================
   基础重置与全局样式
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* 背景装饰 */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(30, 64, 175, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(59, 130, 246, 0.1) 0%, transparent 40%);
    z-index: -1;
    animation: bgFloat 20s ease-in-out infinite;
}

@keyframes bgFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(2%, 2%) rotate(1deg); }
    66% { transform: translate(-1%, 1%) rotate(-1deg); }
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.5);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-1);
    border-radius: var(--radius-full);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

/* 选中文字样式 */
::selection {
    background: rgba(30, 64, 175, 0.3);
    color: var(--text-primary);
}

/* ========================================
   工具类
   ======================================== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

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

.text-gradient-accent {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 玻璃卡片效果 */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    box-shadow: var(--glass-shadow);
}

/* ========================================
   按钮样式
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 1rem 2rem;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 100%);
    z-index: -1;
    transition: opacity var(--transition-fast);
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 20px rgba(30, 64, 175, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 30px rgba(30, 64, 175, 0.5);
}

.btn-secondary {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    color: var(--text-primary);
    border: var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.btn-secondary:hover {
    background: var(--bg-glass-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-accent {
    background: var(--gradient-2);
    color: white;
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.4);
}

.btn-accent:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 30px rgba(6, 182, 212, 0.5);
}

.btn-block {
    width: 100%;
}

/* ========================================
   头部导航 - 玻璃效果
   ======================================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    transition: all var(--transition-base);
}

header.scrolled {
    padding: var(--space-sm) 0;
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: var(--glass-border);
    box-shadow: var(--glass-shadow);
}

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

.logo a {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-decoration: none;
}

.logo-img {
    height: 48px;
    width: 48px;
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base);
}

.logo-img:hover {
    transform: scale(1.1) rotate(5deg);
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.logo h1 span {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 导航链接 */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    list-style: none;
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--radius-full);
    padding: var(--space-xs) var(--space-sm);
    box-shadow: var(--shadow-sm);
}

.nav-links li a {
    display: block;
    padding: var(--space-sm) var(--space-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.nav-links li a:hover,
.nav-links li a.active {
    color: white;
    background: var(--gradient-1);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
}

.mobile-menu-btn:hover {
    background: var(--gradient-1);
    color: white;
}

/* ========================================
   Hero 区域 - 渐变背景
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

/* 轮播图 */
.hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(30, 58, 138, 0.85) 0%, 
        rgba(30, 64, 175, 0.8) 50%, 
        rgba(59, 130, 246, 0.75) 100%);
}

/* Hero 内容 */
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 850px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    color: white;
    margin-bottom: var(--space-xl);
    animation: fadeInDown 0.8s ease;
}

.hero-badge i {
    color: #fbbf24;
    animation: pulse 2s infinite;
}

.hero-text h2 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
    animation: fadeInUp 0.8s ease 0.2s both;
    color: white;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.hero-text h2 .highlight {
    position: relative;
    display: inline-block;
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-md);
    max-width: 600px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-btns {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-2xl);
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-btns .btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: var(--glass-blur);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-btns .btn-secondary:hover {
    background: white;
    color: var(--primary);
}

/* Hero 统计数据 */
.hero-stats {
    display: flex;
    gap: var(--space-3xl);
    margin-top: var(--space-4xl);
    padding: var(--space-xl);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-2xl);
    animation: fadeInUp 0.8s ease 0.8s both;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    text-align: center;
}

.hero-stat-number {
    font-size: 2.25rem;
    font-weight: 800;
    color: white;
    line-height: 1;
}

.hero-stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: var(--space-xs);
}

/* ========================================
   区块标题
   ======================================== */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--space-3xl);
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-md);
}

.section-label::before,
.section-label::after {
    content: '';
    width: 40px;
    height: 2px;
    background: var(--gradient-1);
    border-radius: var(--radius-full);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.section-header.text-left {
    text-align: left;
    margin-left: 0;
}

.section-header.text-left .section-label::before {
    display: none;
}

/* ========================================
   服务区域 - 玻璃卡片
   ======================================== */
.services {
    padding: var(--space-4xl) 0;
    position: relative;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
}

.service-card {
    position: relative;
    padding: var(--space-2xl);
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
    overflow: hidden;
    box-shadow: var(--glass-shadow);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

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

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

.service-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-lg);
    font-size: 1.75rem;
    color: white;
    box-shadow: 0 10px 40px rgba(30, 64, 175, 0.3);
    transition: transform var(--transition-bounce);
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(-5deg);
}

.service-card h4 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

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

.service-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.service-link:hover {
    gap: var(--space-md);
}

/* ========================================
   统计数据区域
   ======================================== */
.stats {
    padding: var(--space-3xl) 0;
    position: relative;
    overflow: hidden;
}

.stats::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-1);
    opacity: 0.05;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
    padding: var(--space-xl);
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--glass-shadow);
    transition: transform var(--transition-base);
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ========================================
   关于我们区域
   ======================================== */
.about {
    padding: var(--space-4xl) 0;
    position: relative;
}

.about-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-4xl);
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-image-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-1);
    opacity: 0.1;
    z-index: 1;
}

.about-image-wrapper::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: var(--gradient-1);
    border-radius: var(--radius-2xl);
    z-index: -1;
    opacity: 0.5;
}

.about-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-slow);
}

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

.about-image-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--gradient-2);
    color: white;
    padding: var(--space-lg) var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-glow-accent);
    z-index: 2;
}

.about-image-badge .number {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}

.about-image-badge .text {
    font-size: 0.85rem;
    opacity: 0.9;
}

.about-content p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.about-feature {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.about-feature:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.about-feature i {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(52, 211, 153, 0.2) 100%);
    color: var(--success);
    border-radius: var(--radius-lg);
    font-size: 1.1rem;
}

.about-feature span {
    font-weight: 600;
    color: var(--text-primary);
}

/* ========================================
   联系我们区域
   ======================================== */
.contact {
    padding: var(--space-4xl) 0;
    position: relative;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: var(--space-4xl);
}

.contact-info > p {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: var(--space-xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.contact-item-icon {
    width: 54px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border-radius: var(--radius-xl);
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
    box-shadow: 0 8px 25px rgba(30, 64, 175, 0.3);
}

.contact-item-content h5 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
}

.contact-item-content p {
    color: var(--text-primary);
    font-weight: 500;
}

.social-links {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-xl);
}

.social-links a {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-size: 1.15rem;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.social-links a:hover {
    background: var(--gradient-1);
    color: white;
    transform: translateY(-5px) rotate(-5deg);
    box-shadow: 0 10px 30px rgba(30, 64, 175, 0.4);
}

/* 联系表单 */
.contact-form-wrapper {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    box-shadow: var(--glass-shadow);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    background: rgba(255, 255, 255, 0.8);
    border: 2px solid transparent;
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: white;
    box-shadow: 0 0 0 4px rgba(30, 64, 175, 0.1);
}

.form-group input.error,
.form-group textarea.error {
    border-color: var(--error);
}

.error-tip {
    display: block;
    color: var(--error);
    font-size: 0.85rem;
    margin-top: var(--space-xs);
}

.form-message {
    margin-top: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-xl);
    text-align: center;
    font-size: 0.95rem;
    animation: fadeIn 0.3s ease;
}

.form-message.success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.form-message.error {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

/* ========================================
   合作伙伴区域
   ======================================== */
.partners {
    padding: var(--space-3xl) 0;
    overflow: hidden;
}

.partner-slider {
    position: relative;
}

.partner-slider::before,
.partner-slider::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 400px;
    z-index: 2;
    pointer-events: none;
}

.partner-slider::before {
    left: -200px;
    background: linear-gradient(90deg, 
        #f0f9ff 0%, 
        #e0f2fe 20%, 
        #dbeafe 40%, 
        rgba(219, 234, 254, 0.5) 60%, 
        rgba(219, 234, 254, 0.2) 80%, 
        transparent 100%);
}

.partner-slider::after {
    right: -200px;
    background: linear-gradient(-90deg, 
        #f0f9ff 0%, 
        #e0f2fe 20%, 
        #dbeafe 40%, 
        rgba(219, 234, 254, 0.5) 60%, 
        rgba(219, 234, 254, 0.2) 80%, 
        transparent 100%);
}

.partner-track {
    display: flex;
    animation: scroll 25s linear infinite;
    width: max-content;
}

.partner-logo {
    flex-shrink: 0;
    width: 280px;
    padding: var(--space-xl) var(--space-2xl);
    text-align: center;
    opacity: 0.4;
    transition: all var(--transition-base);
}

.partner-logo:hover {
    opacity: 1;
    transform: scale(1.1);
}

.partner-logo .en {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 2px;
}

.partner-logo .cn {
    display: block;
    font-size: 1rem;
    color: var(--text-muted);
    margin-top: var(--space-sm);
}

.partner-slider:hover .partner-track {
    animation-play-state: paused;
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ========================================
   页脚
   ======================================== */
footer {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-top: var(--glass-border);
    padding-top: var(--space-4xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-3xl);
    padding-bottom: var(--space-3xl);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.footer-brand h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.footer-brand h4 span {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.footer-links h5,
.footer-services h5,
.footer-newsletter h5 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

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

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

.footer-links a,
.footer-services a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

.footer-links a::before,
.footer-services a::before {
    content: '→';
    opacity: 0;
    transform: translateX(-10px);
    transition: all var(--transition-fast);
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-links a:hover,
.footer-services a:hover {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    padding-left: var(--space-sm);
}

.footer-links a:hover::before,
.footer-services a:hover::before {
    opacity: 1;
    transform: translateX(0);
}

.footer-newsletter p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: var(--space-md);
}

.subscribe-form {
    display: flex;
    gap: var(--space-sm);
}

.subscribe-form input {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    background: rgba(255, 255, 255, 0.8);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.subscribe-form input::placeholder {
    color: var(--text-light);
}

.subscribe-form input:focus {
    outline: none;
    border-color: var(--primary);
}

.subscribe-form button {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border: none;
    border-radius: var(--radius-lg);
    color: white;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 15px rgba(30, 64, 175, 0.3);
}

.subscribe-form button:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(30, 64, 175, 0.4);
}

.footer-bottom {
    padding: var(--space-lg) 0;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-bottom a:hover {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   动画关键帧
   ======================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* 滚动显示动画 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .hero-content {
        max-width: 100%;
    }
    
    .about-container,
    .contact-container {
        grid-template-columns: 1fr;
        gap: var(--space-3xl);
    }
    
    .about-image {
        order: -1;
        max-width: 600px;
        margin: 0 auto;
    }
    
    .stat-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 70px;
        left: var(--space-md);
        right: var(--space-md);
        background: var(--bg-glass);
        backdrop-filter: var(--glass-blur);
        -webkit-backdrop-filter: var(--glass-blur);
        border: var(--glass-border);
        border-radius: var(--radius-2xl);
        padding: var(--space-md);
        flex-direction: column;
        gap: var(--space-xs);
        box-shadow: var(--shadow-xl);
    }
    
    .nav-links.active {
        display: flex;
        animation: fadeInDown 0.3s ease;
    }
    
    .nav-links li a {
        text-align: center;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }
    
    .hero-text h2 {
        font-size: 2rem;
    }
    
    .hero-btns {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .service-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-md);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .contact-container {
        gap: var(--space-3xl);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .logo h1 {
        font-size: 1rem;
    }
    
    .logo-img {
        height: 40px;
        width: 40px;
    }
    
    .stat-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .service-card {
        padding: var(--space-xl);
    }
    
    .contact-form-wrapper {
        padding: var(--space-xl);
    }
}

/* ========================================
   加载动画
   ======================================== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}