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

:root {
    --primary-color: #6366F1;
    --secondary-color: #818CF8;
    --accent-color: #A78BFA;
    --accent-pink: #F472B6;
    --accent-cyan: #22D3EE;
    --accent-green: #34D399;
    --gradient-primary: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #A78BFA 100%);
    --gradient-soft: linear-gradient(135deg, #818CF8 0%, #A78BFA 100%);
    --gradient-accent: linear-gradient(135deg, #22D3EE 0%, #6366F1 100%);
    --gradient-pink: linear-gradient(135deg, #EC4899 0%, #F472B6 100%);
    --gradient-cyan: linear-gradient(135deg, #06B6D4 0%, #22D3EE 100%);
    --text-dark: #0F172A;
    --text-medium: #334155;
    --text-light: #64748B;
    --bg-light: #F8FAFC;
    --bg-white: #FFFFFF;
    --bg-gradient: linear-gradient(135deg, #FEFEFE 0%, #F8FAFC 50%, #EFF6FF 100%);
    --glass-white: rgba(255, 255, 255, 0.7);
    --glass-white-strong: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.4);
    --glass-border-strong: rgba(255, 255, 255, 0.6);
    --shadow-sm: 0 4px 16px rgba(99, 102, 241, 0.08);
    --shadow-md: 0 8px 32px rgba(99, 102, 241, 0.12);
    --shadow-lg: 0 16px 48px rgba(99, 102, 241, 0.16);
    --shadow-glass: 0 8px 32px rgba(148, 163, 184, 0.12);
    --shadow-glow: inset 0 0 0 1px rgba(99, 102, 241, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 深色模式 */
[data-theme="dark"] {
    --text-dark: #E2E8F0;
    --text-medium: #CBD5E1;
    --text-light: #94A3B8;
    --bg-light: #0F172A;
    --bg-white: #1E293B;
    --bg-gradient: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #334155 100%);
    --glass-white: rgba(30, 41, 59, 0.7);
    --glass-white-strong: rgba(30, 41, 59, 0.9);
    --glass-border: rgba(148, 163, 184, 0.2);
    --glass-border-strong: rgba(148, 163, 184, 0.3);
    --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: inset 0 0 0 1px rgba(99, 102, 241, 0.4);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
    background: var(--bg-gradient);
    background-attachment: fixed;
}

html {
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--glass-white);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    background: var(--glass-white-strong);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

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

.logo i {
    font-size: 2rem;
    color: var(--primary-color);
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.logo-name {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    animation: gradientShift 5s ease infinite;
}

.logo-slogan {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-light);
    letter-spacing: 1px;
    line-height: 1;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

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

/* 导航栏控件 */
.nav-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--glass-white);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-dark);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 1.1rem;
}

.theme-toggle:hover {
    background: var(--glass-white-strong);
    transform: scale(1.1);
}

.language-selector {
    position: relative;
}

.lang-button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 15px;
    border-radius: 20px;
    border: none;
    background: var(--glass-white);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-dark);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    font-weight: 500;
}

.lang-button:hover {
    background: var(--glass-white-strong);
}

.lang-button i {
    font-size: 1rem;
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: var(--glass-white-strong);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 12px;
    border: 2px solid var(--glass-border);
    box-shadow: var(--shadow-md);
    padding: 8px;
    min-width: 120px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
}

.lang-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    width: 100%;
    padding: 10px 15px;
    border: none;
    background: transparent;
    color: var(--text-dark);
    text-align: left;
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition);
    font-size: 0.9rem;
}

.lang-option:hover {
    background: var(--primary-color);
    color: white;
}

.lang-option.active {
    background: var(--gradient-primary);
    color: white;
    font-weight: 600;
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: var(--transition);
}

/* 英雄区 */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(99, 102, 241, 0.03) 2px,
            rgba(99, 102, 241, 0.03) 4px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 2px,
            rgba(99, 102, 241, 0.03) 2px,
            rgba(99, 102, 241, 0.03) 4px
        ),
        linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 50%, #DDD6FE 100%);
    background-size: 50px 50px, 50px 50px, 100% 100%;
    color: var(--text-dark);
    margin-top: 70px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.08) 40%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
    filter: blur(60px);
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.12) 0%, rgba(167, 139, 250, 0.08) 40%, transparent 70%);
    border-radius: 50%;
    animation: float 15s ease-in-out infinite reverse;
    filter: blur(60px);
}

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

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--text-medium);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--gradient-primary);
    background-size: 200% 200%;
    color: white;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: none;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    animation: gradientShift 3s ease infinite;
}

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

.btn-secondary {
    background: var(--glass-white);
    color: var(--primary-color);
    border: 2px solid var(--glass-border-strong);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--glass-white-strong);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-block {
    width: 100%;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 2rem;
    color: var(--primary-color);
}

/* 通用区块样式 */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: inline-block;
    animation: gradientShift 4s ease infinite;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-soft);
    border-radius: 10px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-top: 20px;
}

/* 关于我们 */
.about {
    background: transparent;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image .image-placeholder {
    background: var(--glass-white-strong);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 24px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 5rem;
    box-shadow: var(--shadow-glass);
    border: 2px solid var(--glass-border-strong);
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: var(--glass-white);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 16px;
    transition: var(--transition);
    border: 2px solid var(--glass-border);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: var(--primary-color);
    background: var(--glass-white-strong);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 5px;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 企业文化 */
.culture {
    background: linear-gradient(135deg, #312E81 0%, #4338CA 50%, #6366F1 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.culture::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse 1000px 800px at top right, rgba(167, 139, 250, 0.2) 0%, transparent 50%),
                radial-gradient(ellipse 800px 600px at bottom left, rgba(34, 211, 238, 0.15) 0%, transparent 50%);
    pointer-events: none;
    filter: blur(80px);
}

.culture .section-title {
    color: white;
    background: none;
    -webkit-text-fill-color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.culture .section-title::after {
    background: white;
    box-shadow: 0 2px 10px rgba(255, 255, 255, 0.3);
}

.culture .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
}

.culture-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 40px;
    position: relative;
    z-index: 1;
}

.culture .section-header {
    position: relative;
    z-index: 1;
}

.culture-item {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 40px 30px;
    border-radius: 20px;
    border: 2px solid rgba(255, 255, 255, 0.25);
    transition: var(--transition);
}

.culture-item:hover {
    background: rgba(255, 255, 255, 0.22);
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

.culture-icon {
    width: 85px;
    height: 85px;
    margin: 0 auto 25px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.culture-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    text-align: center;
    font-weight: 600;
}

.culture-item h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    text-align: center;
    font-weight: 500;
    opacity: 0.95;
}

.culture-item p {
    text-align: center;
    line-height: 1.8;
    opacity: 0.9;
}

.values-list {
    margin-top: 20px;
}

.value-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.value-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(5px);
    border-color: rgba(255, 255, 255, 0.4);
}

.value-item i {
    font-size: 1.5rem;
    margin-top: 3px;
    flex-shrink: 0;
}

.value-item div {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.value-item strong {
    font-size: 1.1rem;
    display: block;
}

.value-item span {
    font-size: 0.95rem;
    opacity: 0.85;
    line-height: 1.5;
}

/* 服务项目 */
.services {
    background: transparent;
}

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

.service-card {
    background: var(--glass-white);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--glass-border);
}

.service-card:hover {
    transform: translateY(-8px);
    background: var(--glass-white-strong);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: var(--primary-color);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-cyan);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    box-shadow: var(--shadow-md);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.service-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 案例展示 */
.portfolio {
    background: transparent;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    cursor: pointer;
    border: 2px solid var(--glass-border);
    background: var(--glass-white);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.portfolio-image {
    position: relative;
    height: 300px;
    overflow: hidden;
}

.portfolio-image .image-placeholder {
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 4rem;
    transition: var(--transition);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(99, 102, 241, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    opacity: 0;
    transition: var(--transition);
    padding: 20px;
}

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

.portfolio-item:hover .image-placeholder {
    transform: scale(1.1);
}

.portfolio-overlay h4 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.portfolio-overlay p {
    text-align: center;
}

/* 团队介绍 */
.team {
    background: transparent;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.team-member {
    background: var(--glass-white);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 30px;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--glass-border);
}

.team-member:hover {
    transform: translateY(-8px);
    background: var(--glass-white-strong);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: var(--primary-color);
}

.member-image {
    margin-bottom: 20px;
}

.member-image .image-placeholder {
    width: 150px;
    height: 150px;
    margin: 0 auto;
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 4rem;
    box-shadow: var(--shadow-md);
    border: 3px solid var(--glass-border-strong);
}

.team-member h4 {
    font-size: 1.3rem;
    margin-bottom: 5px;
    color: var(--text-dark);
}

.member-role {
    color: var(--text-light);
    margin-bottom: 15px;
}

.social-links {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.social-links a {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dark);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--gradient-pink);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* 联系我们 */
.contact {
    background: transparent;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 60px;
}

.info-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    align-items: flex-start;
}

.info-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.3rem;
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

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

.info-text p {
    color: var(--text-light);
}

.contact-form {
    background: var(--glass-white);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 40px;
    border-radius: 24px;
    border: 2px solid var(--glass-border);
    box-shadow: var(--shadow-glass);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: var(--bg-white);
    border: 2px solid var(--glass-border);
    border-radius: 12px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

/* 页脚 */
.footer {
    background: linear-gradient(180deg, #312E81 0%, #1E293B 100%);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.3rem;
    margin-bottom: 20px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-slogan {
    color: rgba(255, 255, 255, 0.95) !important;
    font-size: 1.1rem !important;
    margin-bottom: 15px !important;
    letter-spacing: 2px;
}

.footer-slogan strong {
    color: var(--primary-color);
    font-weight: 600;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: white;
    padding-left: 5px;
}

.footer-section ul li i {
    margin-right: 10px;
    color: var(--primary-color);
}

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

.social-icons a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--gradient-soft);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

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

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--shadow-md);
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
    }
    50% {
        transform: translateY(-30px) translateX(20px);
    }
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 响应式设计 */

/* 平板端 (768px - 1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }

    .hero-title {
        font-size: 2.8rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .about-content,
    .contact-content {
        gap: 40px;
    }

    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .culture-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    .team-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .nav-menu {
        gap: 1.5rem;
    }

    .nav-menu a {
        font-size: 0.95rem;
    }
}

/* 移动端 (max-width: 768px) */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-controls {
        display: none;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--glass-white-strong);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        width: 100%;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
        gap: 0;
    }

    .nav-menu li {
        width: 100%;
        padding: 15px 0;
        border-bottom: 1px solid var(--glass-border);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

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

    section {
        padding: 60px 0;
    }

    .hero {
        height: auto;
        min-height: 100vh;
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }

    .btn {
        width: 100%;
    }

    .logo-name {
        font-size: 1.2rem;
    }

    .logo-slogan {
        font-size: 0.65rem;
    }

    .logo i {
        font-size: 1.5rem;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .about-image .image-placeholder {
        height: 300px;
        font-size: 4rem;
    }

    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .culture-content {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .culture-item {
        padding: 30px 20px;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .services-grid,
    .portfolio-grid,
    .team-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .service-card,
    .team-member {
        padding: 30px 20px;
    }

    .contact-form {
        padding: 30px 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
        font-size: 1.1rem;
    }

    .scroll-indicator {
        bottom: 20px;
    }
}

/* 小屏手机 (max-width: 480px) */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.6rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .btn {
        padding: 10px 25px;
        font-size: 0.9rem;
    }
}