/**
 * 高端企业官网样式
 * 玻璃态设计 · 粒子动画 · 3D效果
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
}

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

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 粒子画布 */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
    padding: 12px 0;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
    position: relative;
    overflow: hidden;
}

.logo-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    background: white;
    border-radius: 4px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}

.nav-link {
    padding: 10px 20px;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 15px;
    border-radius: 10px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.nav-cta {
    margin-left: 16px;
}

.btn-primary {
    padding: 10px 24px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.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(7px, -7px);
}

/* Hero区域 */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 120px 24px 100px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    bottom: -150px;
    right: -150px;
    animation-delay: 5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

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

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 32px;
    animation: fadeIn 1s ease 0.2s both;
}

.hero-title {
    font-size: clamp(40px, 8vw, 80px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.title-line {
    display: block;
    animation: fadeInUp 1s ease 0.3s both;
}

.title-line.highlight {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation-delay: 0.4s;
}

.hero-description {
    font-size: clamp(16px, 2vw, 20px);
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
    animation: fadeInUp 1s ease 0.5s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 80px;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.6s both;
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-xl);
}

.btn-hero-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
}

.btn-hero-primary svg {
    transition: transform 0.3s ease;
}

.btn-hero-primary:hover svg {
    transform: translateX(4px);
}

.btn-hero-secondary {
    display: inline-flex;
    align-items: center;
    padding: 16px 32px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-hero-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 800px;
    margin: 0 auto 60px;
    animation: fadeInUp 1s ease 0.7s both;
}

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

.stat-number {
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.scroll-indicator {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: 40px;
    padding-top: 20px;
    animation: fadeIn 1s ease 1s both;
    z-index: 10;
}

.mouse {
    width: 28px;
    height: 44px;
    border: 2px solid rgba(99, 102, 241, 0.6);
    border-radius: 16px;
    position: relative;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite ease-in-out;
}

@keyframes scroll {
    0% { 
        opacity: 1; 
        transform: translateX(-50%) translateY(0); 
    }
    50% {
        opacity: 0.8;
        transform: translateX(-50%) translateY(8px);
    }
    100% { 
        opacity: 0; 
        transform: translateX(-50%) translateY(16px); 
    }
}

.arrow {
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: center;
}

.arrow span {
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--primary);
    border-bottom: 2px solid var(--primary);
    transform: rotate(45deg);
    opacity: 0.6;
}

.arrow span:nth-child(1) {
    animation: arrowDown 2s infinite 0s;
}

.arrow span:nth-child(2) {
    animation: arrowDown 2s infinite 0.2s;
}

.arrow span:nth-child(3) {
    animation: arrowDown 2s infinite 0.4s;
}

@keyframes arrowDown {
    0% { 
        opacity: 0; 
        transform: rotate(45deg) translateY(-4px); 
    }
    50% { 
        opacity: 1; 
        transform: rotate(45deg) translateY(0); 
    }
    100% { 
        opacity: 0; 
        transform: rotate(45deg) translateY(4px); 
    }
}

/* 通用样式 */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
}

/* 优势区域 */
.advantages-section {
    padding: 120px 0;
    background: var(--bg-primary);
    position: relative;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.advantage-card {
    padding: 40px;
    background: var(--bg-primary);
    border-radius: 20px;
    border: 1px solid rgba(99, 102, 241, 0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(139, 92, 246, 0.05));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

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

.card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    position: relative;
    color: white;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.icon-bg {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    filter: blur(10px);
}

.advantage-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.advantage-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.card-hover-effect {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.advantage-card:hover .card-hover-effect {
    transform: scaleX(1);
}

/* 关于我们 */
.about-section {
    padding: 120px 0;
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.decorative-design {
    width: 100%;
    aspect-ratio: 1;
    position: relative;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(139, 92, 246, 0.05));
    overflow: hidden;
    border-radius: 24px;
}

/* 网格背景 */
.grid-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(99, 102, 241, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.1) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.3;
}

/* 主要图形元素 */
.design-element {
    position: absolute;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
    animation: floatElement 8s ease-in-out infinite;
}

.element-inner {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0));
    border-radius: inherit;
}

.element-1 {
    width: 120px;
    height: 120px;
    top: 20%;
    left: 15%;
    transform: rotate(15deg);
}

.element-2 {
    width: 80px;
    height: 80px;
    top: 50%;
    right: 20%;
    transform: rotate(-25deg);
    background: linear-gradient(135deg, var(--secondary), var(--accent));
}

.element-3 {
    width: 100px;
    height: 100px;
    bottom: 15%;
    left: 25%;
    transform: rotate(35deg);
    background: linear-gradient(135deg, var(--accent), var(--primary));
}

/* 装饰性圆圈 */
.decorative-circle {
    position: absolute;
    border-radius: 50%;
    border: 3px solid;
    animation: pulse 4s ease-in-out infinite;
}

.circle-1 {
    width: 60px;
    height: 60px;
    top: 10%;
    right: 15%;
    border-color: rgba(99, 102, 241, 0.4);
    animation-delay: 0s;
}

.circle-2 {
    width: 40px;
    height: 40px;
    top: 60%;
    left: 10%;
    border-color: rgba(139, 92, 246, 0.4);
    animation-delay: 1.5s;
}

.circle-3 {
    width: 50px;
    height: 50px;
    bottom: 20%;
    right: 25%;
    border-color: rgba(236, 72, 153, 0.4);
    animation-delay: 3s;
}

/* SVG装饰 */
.decorative-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* 动画 */
@keyframes floatElement1 {
    0%, 100% {
        transform: translateY(0) rotate(15deg);
    }
    50% {
        transform: translateY(-20px) rotate(25deg);
    }
}

@keyframes floatElement2 {
    0%, 100% {
        transform: translateY(0) rotate(-25deg);
    }
    50% {
        transform: translateY(-20px) rotate(-15deg);
    }
}

@keyframes floatElement3 {
    0%, 100% {
        transform: translateY(0) rotate(35deg);
    }
    50% {
        transform: translateY(-20px) rotate(45deg);
    }
}

.element-1 {
    animation: floatElement1 8s ease-in-out infinite;
}

.element-2 {
    animation: floatElement2 8s ease-in-out infinite 2s;
}

.element-3 {
    animation: floatElement3 8s ease-in-out infinite 4s;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.6;
    }
    50% {
        transform: scale(1.2);
        opacity: 1;
    }
}

.about-text {
    padding-left: 24px;
}

.about-description {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
}

.about-description p {
    margin-bottom: 20px;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.feature-text h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.feature-text p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* 服务项目 */
.services-section {
    padding: 120px 0;
    background: var(--bg-primary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.service-card {
    padding: 40px;
    background: var(--bg-primary);
    border-radius: 24px;
    border: 1px solid rgba(99, 102, 241, 0.1);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary);
}

.service-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.service-icon {
    font-size: 48px;
}

.service-number {
    font-size: 72px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.1;
    line-height: 1;
}

.service-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.service-list {
    list-style: none;
    margin-bottom: 24px;
}

.service-list li {
    padding: 8px 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 24px;
}

.service-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

.service-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: gap 0.3s ease;
}

.service-link:hover {
    gap: 12px;
}

.service-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.service-card:hover .service-bg {
    opacity: 0.1;
}

/* 案例展示 */
.portfolio-section {
    padding: 120px 0;
    background: var(--bg-secondary);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.portfolio-item {
    background: var(--bg-primary);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.portfolio-image {
    width: 100%;
    aspect-ratio: 16/9;
    position: relative;
    overflow: hidden;
}

.portfolio-decorative {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
}

/* 设计1：网站建设 - 网格和方块 */
.portfolio-design-1 {
    background: linear-gradient(135deg, #4f46e5, #6366f1);
}

.decor-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.4;
}

.decor-box {
    position: absolute;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.box-1 {
    width: 80px;
    height: 60px;
    top: 20%;
    left: 15%;
    animation: floatBox 6s ease-in-out infinite;
}

.box-2 {
    width: 60px;
    height: 80px;
    top: 50%;
    right: 20%;
    animation: floatBox 6s ease-in-out infinite 2s;
}

.box-3 {
    width: 70px;
    height: 50px;
    bottom: 20%;
    left: 25%;
    animation: floatBox 6s ease-in-out infinite 4s;
}

.decor-line {
    position: absolute;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
}

.line-1 {
    width: 120px;
    height: 3px;
    top: 35%;
    left: 10%;
    transform: rotate(25deg);
    animation: pulseLine 3s ease-in-out infinite;
}

.line-2 {
    width: 100px;
    height: 3px;
    bottom: 30%;
    right: 15%;
    transform: rotate(-35deg);
    animation: pulseLine 3s ease-in-out infinite 1.5s;
}

/* 设计2：移动应用 - 圆形和圆环 */
.portfolio-design-2 {
    background: linear-gradient(135deg, #8b5cf6, #a78bfa);
}

.decor-circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.circle-large {
    width: 120px;
    height: 120px;
    top: 15%;
    left: 20%;
    animation: rotateCircle 10s linear infinite;
}

.circle-medium {
    width: 80px;
    height: 80px;
    top: 50%;
    right: 25%;
    animation: rotateCircle 8s linear infinite reverse;
}

.circle-small {
    width: 50px;
    height: 50px;
    bottom: 20%;
    left: 15%;
    animation: rotateCircle 6s linear infinite;
}

.decor-ring {
    position: absolute;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.4);
}

.ring-1 {
    width: 100px;
    height: 100px;
    top: 30%;
    right: 15%;
    animation: pulseRing 4s ease-in-out infinite;
}

.ring-2 {
    width: 60px;
    height: 60px;
    bottom: 25%;
    right: 30%;
    animation: pulseRing 4s ease-in-out infinite 2s;
}

.decor-dot {
    position: absolute;
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    box-shadow: 0 2px 10px rgba(255, 255, 255, 0.5);
}

.dot-1 {
    top: 25%;
    left: 50%;
    animation: floatDot 5s ease-in-out infinite;
}

.dot-2 {
    top: 60%;
    left: 40%;
    animation: floatDot 5s ease-in-out infinite 1.5s;
}

.dot-3 {
    bottom: 30%;
    right: 40%;
    animation: floatDot 5s ease-in-out infinite 3s;
}

/* 设计3：云服务 - 云朵和波浪 */
.portfolio-design-3 {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.cloud-svg {
    position: absolute;
    top: 20%;
    left: 10%;
    width: 60%;
    height: 40%;
    opacity: 0.6;
    animation: floatCloud 8s ease-in-out infinite;
}

.decor-wave {
    position: absolute;
    width: 100%;
    height: 40px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.2) 50%, 
        transparent 100%);
    border-radius: 50%;
    opacity: 0.5;
}

.wave-1 {
    top: 30%;
    animation: waveMove 6s ease-in-out infinite;
}

.wave-2 {
    bottom: 25%;
    animation: waveMove 6s ease-in-out infinite 3s;
}

.decor-arrow {
    position: absolute;
    width: 0;
    height: 0;
    border-style: solid;
}

.arrow-1 {
    border-width: 0 15px 25px 15px;
    border-color: transparent transparent rgba(255, 255, 255, 0.4) transparent;
    top: 40%;
    right: 20%;
    animation: floatArrow1 4s ease-in-out infinite;
}

.arrow-2 {
    border-width: 0 12px 20px 12px;
    border-color: transparent transparent rgba(255, 255, 255, 0.3) transparent;
    bottom: 35%;
    right: 30%;
    animation: floatArrow2 4s ease-in-out infinite 2s;
}

/* 动画效果 */
@keyframes floatBox {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-15px) rotate(5deg);
    }
}

@keyframes pulseLine {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.6;
    }
}

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

@keyframes pulseRing {
    0%, 100% {
        transform: scale(1);
        opacity: 0.4;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.7;
    }
}

@keyframes floatDot {
    0%, 100% {
        transform: translateY(0);
        opacity: 0.8;
    }
    50% {
        transform: translateY(-20px);
        opacity: 1;
    }
}

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

@keyframes waveMove {
    0%, 100% {
        transform: translateX(-20px);
    }
    50% {
        transform: translateX(20px);
    }
}

@keyframes floatArrow1 {
    0%, 100% {
        transform: translateY(0) rotate(45deg);
    }
    50% {
        transform: translateY(-15px) rotate(55deg);
    }
}

@keyframes floatArrow2 {
    0%, 100% {
        transform: translateY(0) rotate(-30deg);
    }
    50% {
        transform: translateY(-15px) rotate(-20deg);
    }
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.portfolio-item:hover .image-overlay {
    opacity: 1;
}

.portfolio-link {
    padding: 12px 24px;
    background: white;
    color: var(--primary);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transform: translateY(20px);
    transition: transform 0.4s ease;
}

.portfolio-item:hover .portfolio-link {
    transform: translateY(0);
}

.portfolio-info {
    padding: 32px;
}

.portfolio-category {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.portfolio-info h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.portfolio-info p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 联系我们 */
.contact-section {
    padding: 120px 0;
    background: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-info {
    padding-right: 24px;
}

.contact-intro {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 48px;
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.contact-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-form-wrapper {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    background: var(--bg-primary);
    border: 2px solid rgba(99, 102, 241, 0.1);
    border-radius: 12px;
    font-size: 16px;
    font-family: inherit;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

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

.btn-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-md);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-submit svg {
    transition: transform 0.3s ease;
}

.btn-submit:hover svg {
    transform: translate(4px, -4px);
}

/* 页脚 */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 80px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-section h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 8px;
}

#footer-icp {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    font-size: 14px;
}

.copyright {
    font-size: 14px;
}

/* 返回顶部 */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* 动画 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* 响应式设计 */
@media (max-width: 1024px) {
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-text {
        padding-left: 0;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-cta {
        display: none;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 40px 24px;
        gap: 0;
        transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: var(--shadow-xl);
        overflow-y: auto;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-link {
        display: block;
        width: 100%;
        padding: 16px 20px;
        border-radius: 12px;
        margin-bottom: 8px;
    }

    .hamburger {
        display: flex;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .advantages-grid,
    .services-grid,
    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-form-wrapper {
        padding: 24px;
    }
}

/* 微信优化 */
@supports (-webkit-touch-callout: none) {
    body {
        -webkit-tap-highlight-color: transparent;
    }
}