/* 
 * 卡佳寰宇官网样式 v2.0
 * 设计风格：Glassmorphism + Aurora UI
 */

/* ==================== 全局重置与基础设置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
    --gradient-secondary: linear-gradient(135deg, #5B86E5 0%, #36D1DC 100%);
    --gradient-accent: linear-gradient(135deg, #A8EDEA 0%, #FED6E3 100%);
    
    /* 纯色 */
    --primary-500: #667EEA;
    --primary-600: #5568D3;
    --secondary-500: #36D1DC;
    --accent-500: #A78BFA;
    
    /* 中性色（深色基调） */
    --neutral-950: #0A0A1A;
    --neutral-900: #1A1A2E;
    --neutral-800: #2A2A3E;
    --neutral-700: #3F3F5A;
    --neutral-400: #9CA3AF;
    --neutral-200: #E5E7EB;
    --neutral-100: #F3F4F6;
    
    /* 玻璃态 */
    --glass-white: rgba(255, 255, 255, 0.1);
    --glass-dark: rgba(26, 26, 46, 0.75);
    --glass-border: rgba(255, 255, 255, 0.18);
    
    /* 发光色 */
    --glow-primary: rgba(102, 126, 234, 0.6);
    --glow-secondary: rgba(54, 209, 220, 0.5);
    --glow-accent: rgba(167, 139, 250, 0.4);
    
    /* 字体 */
    --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
    
    /* 字号 */
    --text-xs: 12px;
    --text-sm: 14px;
    --text-base: 16px;
    --text-lg: 18px;
    --text-xl: 22px;
    --text-2xl: 28px;
    --text-3xl: 36px;
    --text-4xl: 52px;
    --text-5xl: 72px;
    
    /* 间距 */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    --spacing-4xl: 80px;
    --spacing-5xl: 120px;
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.12);
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow-primary: 0 0 20px rgba(102, 126, 234, 0.6), 0 0 40px rgba(102, 126, 234, 0.3);
    --shadow-glow-secondary: 0 0 15px rgba(54, 209, 220, 0.5), 0 0 30px rgba(54, 209, 220, 0.2);
    --shadow-card-hover: 0 12px 48px rgba(102, 126, 234, 0.25);
    
    /* 动画 */
    --duration-fast: 250ms;
    --duration-normal: 350ms;
    --duration-slow: 500ms;
    --easing-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --easing-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--neutral-200);
    background-color: var(--neutral-950);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-3xl);
}

/* ==================== 动态背景层 ==================== */
.bg-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.bg-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0.15;
}

.bg-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
}

.bg-orbs {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--primary-500), transparent);
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--secondary-500), transparent);
    top: 50%;
    right: 10%;
    animation-delay: 7s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--accent-500), transparent);
    bottom: 10%;
    left: 40%;
    animation-delay: 14s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    33% {
        transform: translate(30px, -50px);
    }
    66% {
        transform: translate(-50px, 30px);
    }
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--glass-dark);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    transition: all var(--duration-normal) var(--easing-smooth);
}

.navbar.scrolled {
    background: rgba(26, 26, 46, 0.85);
    box-shadow: var(--shadow-glass);
}

.navbar::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.3;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-3xl);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo a {
    text-decoration: none;
}

.logo-text {
    font-size: var(--text-2xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

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

.nav-link {
    font-size: var(--text-base);
    color: var(--neutral-200);
    text-decoration: none;
    position: relative;
    transition: color var(--duration-fast) var(--easing-smooth);
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    box-shadow: 0 0 8px var(--glow-primary);
    transition: transform var(--duration-fast) var(--easing-smooth);
}

.nav-link:hover {
    color: var(--neutral-100);
}

.nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-lang-wrap {
    display: flex;
    align-items: center;
    margin-left: 8px;
    padding-left: 24px;
    border-left: 1px solid var(--glass-border);
}

.lang-switcher {
    display: flex;
    gap: 4px;
    background: var(--glass-dark);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 4px;
    box-shadow: var(--shadow-sm);
}

.lang-btn {
    padding: 6px 12px;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--neutral-400);
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: color var(--duration-fast) var(--easing-smooth),
                background var(--duration-fast) var(--easing-smooth);
}

.lang-btn:hover {
    color: var(--neutral-100);
    background: rgba(255, 255, 255, 0.08);
}

.lang-btn.active {
    color: var(--neutral-100);
    background: var(--gradient-primary);
    box-shadow: 0 0 12px var(--glow-primary);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger span {
    width: 28px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500));
    transition: all var(--duration-normal) var(--easing-smooth);
    box-shadow: 0 0 8px var(--glow-primary);
}

/* ==================== Hero 区域 ==================== */
.hero {
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-5xl) var(--spacing-3xl);
    margin-top: 80px;
    position: relative;
    overflow: hidden;
}

/* Floating Lines 背景容器 */
.floating-lines-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: auto;
}

.floating-lines-container canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0.08;
    z-index: 0;
}

.hero-container {
    max-width: 1000px;
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: var(--text-5xl);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--neutral-100);
    margin-bottom: var(--spacing-lg);
    opacity: 0;
    animation: fadeInUp var(--duration-slow) var(--easing-smooth) 0.2s forwards;
}

.hero-subtitle {
    font-size: var(--text-xl);
    line-height: 1.8;
    color: var(--neutral-200);
    margin-bottom: var(--spacing-2xl);
    opacity: 0;
    animation: fadeInUp var(--duration-slow) var(--easing-smooth) 0.4s forwards;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    opacity: 0;
    animation: fadeInUp var(--duration-slow) var(--easing-smooth) 0.6s forwards;
}

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

.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    pointer-events: none;
}

.deco-circle {
    position: absolute;
    border-radius: 50%;
    border: 2px solid var(--glass-border);
    opacity: 0.2;
}

.deco-1 {
    width: 400px;
    height: 400px;
    top: 10%;
    right: 10%;
    animation: rotate 60s linear infinite;
}

.deco-2 {
    width: 300px;
    height: 300px;
    bottom: 20%;
    left: 15%;
    animation: rotate 80s linear infinite reverse;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* ==================== 手风琴轮播 ==================== */
.accordion-carousel {
    padding: var(--spacing-2xl) 0;
    background: none;
}

.accordion-wrapper {
    display: flex;
    gap: 10px;
    height: 320px;
    max-width: 1200px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.accordion-item {
    position: relative;
    flex: 1;
    min-width: 60px;
    height: 100%;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: flex 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.accordion-item.active {
    flex: 6;
}

.accordion-item img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.5s ease;
}

.accordion-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.6) 100%);
    z-index: 1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.accordion-item:not(.active)::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 26, 0.4);
    z-index: 1;
    transition: background 0.3s ease;
}

.accordion-item:not(.active):hover::after {
    background: rgba(10, 10, 26, 0.2);
}

.accordion-item.active::before {
    opacity: 1;
}

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

/* 响应式 */
@media (max-width: 1024px) {
    .accordion-wrapper {
        height: 280px;
    }
    
    .accordion-item {
        min-width: 40px;
    }
}

@media (max-width: 768px) {
    .accordion-wrapper {
        height: 220px;
        gap: 6px;
    }
    
    .accordion-item {
        min-width: 30px;
        border-radius: var(--radius-sm);
    }
    
    .accordion-item.active {
        flex: 5;
    }
}

@media (max-width: 480px) {
    .accordion-wrapper {
        height: 180px;
        gap: 4px;
    }
    
    .accordion-item {
        min-width: 24px;
    }
}

/* ==================== 按钮 ==================== */
.btn {
    display: inline-block;
    height: 52px;
    padding: 0 40px;
    font-size: var(--text-base);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--duration-normal) var(--easing-smooth);
    cursor: pointer;
    border: none;
    line-height: 52px;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    border: 1px solid var(--glass-border);
}

.btn-primary.glow-btn {
    box-shadow: var(--shadow-glow-primary);
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(102, 126, 234, 0.8), 0 0 60px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background: var(--glass-white);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--neutral-200);
    border: 2px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--primary-500);
    box-shadow: 0 0 12px var(--glow-primary);
    color: var(--neutral-100);
}

/* ==================== 玻璃态卡片 ==================== */
.glass-card {
    background: var(--glass-dark);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glass);
    transition: all var(--duration-normal) var(--easing-smooth);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
    opacity: 0.5;
}

/* ==================== 通用区块样式 ==================== */
section {
    padding: var(--spacing-4xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--neutral-100);
    margin-bottom: var(--spacing-md);
}

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

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--neutral-400);
}

/* ==================== 核心服务 ==================== */
.services-overview {
    padding: var(--spacing-4xl) 0;
}

.service-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.service-card {
    padding: 0;
}

.service-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--shadow-card-hover);
    border-color: rgba(102, 126, 234, 0.4);
}

.card-decoration {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, var(--glow-primary), transparent);
    border-radius: 0 var(--radius-lg) 0 0;
    opacity: 0.3;
    pointer-events: none;
}

.service-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--duration-slow) var(--easing-smooth);
}

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

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(26, 26, 46, 0.8) 100%);
}

.service-content {
    padding: var(--spacing-2xl);
}

.service-icon {
    width: 56px;
    height: 56px;
    margin-bottom: var(--spacing-lg);
}

.glow-icon svg {
    width: 100%;
    height: 100%;
    stroke: url(#gradient-stroke);
    filter: drop-shadow(0 0 8px var(--glow-secondary));
}

.service-icon svg {
    stroke: var(--primary-500);
    transition: all var(--duration-normal) var(--easing-smooth);
}

.service-card:hover .service-icon svg {
    transform: rotate(5deg);
    filter: drop-shadow(0 0 12px var(--glow-primary));
}

.service-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--neutral-100);
    margin-bottom: var(--spacing-md);
}

.service-description {
    color: var(--neutral-400);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

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

.service-list li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    color: var(--neutral-200);
    position: relative;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: var(--gradient-primary);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--glow-primary);
}


/* ==================== 服务场景展示 ==================== */
.service-showcase {
    padding: var(--spacing-4xl) 0;
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.showcase-item {
    padding: 0;
}

.showcase-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
}

.showcase-image {
    width: 100%;
    height: 240px;
    overflow: hidden;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    position: relative;
}

.showcase-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--duration-slow) var(--easing-smooth);
}

.showcase-item:hover .showcase-image img {
    transform: scale(1.08);
}

.image-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(102, 126, 234, 0.3) 100%);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--easing-smooth);
}

.showcase-item:hover .image-glow {
    opacity: 1;
}

.showcase-caption {
    padding: var(--spacing-lg);
}

.showcase-caption h4 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--neutral-100);
    margin-bottom: var(--spacing-xs);
}

.showcase-caption p {
    font-size: var(--text-sm);
    color: var(--neutral-400);
    line-height: 1.6;
}

/* ==================== 公司优势 ==================== */
.advantages {
    padding: var(--spacing-4xl) 0;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.advantage-item {
    text-align: center;
    padding: var(--spacing-2xl);
}

.advantage-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
}

.advantage-icon {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.icon-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, var(--glow-primary), transparent);
    opacity: 0.3;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.3;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 0.5;
    }
}

.advantage-number {
    font-size: var(--text-4xl);
    font-weight: 700;
    display: inline-block;
    position: relative;
    z-index: 1;
}

.advantage-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--neutral-100);
    margin-bottom: var(--spacing-sm);
}

.advantage-text {
    color: var(--neutral-400);
    line-height: 1.8;
}

/* ==================== 服务流程 ==================== */
.process {
    padding: var(--spacing-4xl) 0;
}

.process-steps {
    display: flex;
    align-items: stretch;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
}

.process-step {
    flex: 1;
    display: flex;
    flex-direction: column;
    text-align: center;
    padding: var(--spacing-xl);
    min-height: 0;
}

.process-step:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
}

.step-number {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-3xl);
    font-weight: 700;
    box-shadow: var(--shadow-glow-primary);
    position: relative;
    z-index: 1;
}

.gradient-bg {
    background: var(--gradient-primary);
}

.step-number::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    background: var(--gradient-primary);
    border-radius: 50%;
    z-index: -1;
    opacity: 0.3;
    filter: blur(8px);
}

.step-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--neutral-100);
    margin-bottom: var(--spacing-sm);
}

.step-text {
    color: var(--neutral-400);
    line-height: 1.8;
    font-size: var(--text-sm);
}

.process-connector {
    flex: 0 0 60px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.connector-line {
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    box-shadow: 0 0 8px var(--glow-primary);
    opacity: 0.5;
}

.connector-dot {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--primary-500);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--glow-primary);
    animation: slide 2s linear infinite;
}

@keyframes slide {
    0% {
        left: 0;
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        left: 100%;
        opacity: 0;
    }
}

/* ==================== 公司介绍 ==================== */
.about {
    padding: var(--spacing-4xl) 0;
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
}

.about-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.about-card.reverse {
    direction: rtl;
}

.about-card.reverse > * {
    direction: ltr;
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4 / 3;
}

.about-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: var(--radius-lg);
    transition: transform var(--duration-slow) var(--easing-smooth);
}

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

.about-image-wrapper .image-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
    opacity: 0;
    transition: opacity var(--duration-normal) var(--easing-smooth);
}

.about-image-wrapper:hover .image-glow {
    opacity: 1;
}

.about-text {
    color: var(--neutral-200);
}

.about-subtitle {
    font-size: var(--text-2xl);
    font-weight: 600;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.about-subtitle:first-child {
    margin-top: 0;
}

.about-text p {
    color: var(--neutral-400);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.about-list {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.about-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    color: var(--neutral-200);
    line-height: 1.8;
    position: relative;
}

.about-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: var(--gradient-primary);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--glow-primary);
}

/* ==================== CTA 行动区 ==================== */
.cta {
    padding: var(--spacing-5xl) 0;
    position: relative;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0.1;
}

.cta-content {
    text-align: center;
    padding: var(--spacing-4xl) var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-text {
    font-size: var(--text-xl);
    color: var(--neutral-200);
    margin-bottom: var(--spacing-xl);
}

/* ==================== 联系我们 ==================== */
.contact {
    padding: var(--spacing-4xl) 0;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-form-container {
    padding: var(--spacing-2xl);
}

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

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--neutral-100);
    margin-bottom: var(--spacing-xs);
}

.glass-input {
    height: 56px;
    padding: var(--spacing-md);
    background: var(--glass-dark);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    font-family: var(--font-sans);
    color: var(--neutral-200);
    transition: all var(--duration-normal) var(--easing-smooth);
}

.glass-input::placeholder {
    color: var(--neutral-400);
}

.glass-input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 16px var(--glow-primary);
    background: rgba(26, 26, 46, 0.85);
}

textarea.glass-input {
    height: 140px;
    resize: vertical;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.office-info {
    padding: var(--spacing-xl);
}

.office-info h3 {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.info-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--glass-white);
}

.info-icon svg {
    stroke: var(--primary-500);
    filter: drop-shadow(0 0 4px var(--glow-primary));
}

.info-item p {
    color: var(--neutral-200);
    line-height: 1.8;
}

/* ==================== 页脚 ==================== */
.footer {
    background: linear-gradient(180deg, var(--neutral-900) 0%, var(--neutral-950) 100%);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
    position: relative;
}

.footer-glow-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    box-shadow: 0 0 10px var(--glow-primary);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-column h4 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--neutral-100);
    margin-bottom: var(--spacing-md);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: var(--spacing-xs);
}

.footer-column a {
    color: var(--neutral-400);
    text-decoration: none;
    transition: all var(--duration-fast) var(--easing-smooth);
    display: inline-block;
}

.footer-column a:hover {
    color: var(--neutral-100);
    transform: translateX(4px);
    text-shadow: 0 0 8px var(--glow-primary);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--neutral-800);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--text-sm);
    color: var(--neutral-400);
}

.footer-icp a {
    margin-left: 8px;
    color: var(--neutral-400);
    text-decoration: none;
}

.footer-icp a:hover {
    color: var(--neutral-100);
    text-shadow: 0 0 6px var(--glow-primary);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
    
    .nav-container {
        padding: 0 var(--spacing-xl);
    }
    
    .service-cards,
    .advantage-grid,
    .showcase-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-wrapper,
    .about-card {
        grid-template-columns: 1fr;
    }
    
    .about-card.reverse {
        direction: ltr;
    }
    
    .process-steps {
        flex-wrap: wrap;
    }
    
    .process-connector {
        display: none;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .nav-container {
        padding: 0 var(--spacing-lg);
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--glass-dark);
        backdrop-filter: blur(20px);
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-glass);
        transform: translateX(100%);
        transition: transform var(--duration-slow) var(--easing-smooth);
        gap: var(--spacing-md);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-lang-wrap {
        border-left: none;
        padding-left: 0;
        margin-left: 0;
        padding-top: var(--spacing-sm);
        justify-content: center;
    }
    
    .lang-switcher {
        width: 100%;
        justify-content: center;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -8px);
    }
    
    .hero {
        min-height: 500px;
        padding: var(--spacing-3xl) var(--spacing-lg);
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .hero-subtitle {
        font-size: var(--text-base);
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .section-title {
        font-size: var(--text-2xl);
    }
    
    .service-cards,
    .advantage-grid,
    .showcase-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .process-steps {
        flex-direction: column;
        gap: var(--spacing-xl);
    }
}

@media (max-width: 640px) {
    .cta-title {
        font-size: var(--text-3xl);
    }
    
    .hero-title {
        font-size: 32px;
    }
}