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

/* 基础样式 - 液态玻璃主题 */
body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #fff;
    background-color: #0a0a0a;
    overflow-x: hidden;
}

/* 液态玻璃动态背景 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 15% 20%, rgba(120, 80, 255, 0.3) 0%, transparent 50%),
        radial-gradient(ellipse at 85% 15%, rgba(255, 100, 150, 0.25) 0%, transparent 45%),
        radial-gradient(ellipse at 75% 80%, rgba(80, 200, 255, 0.2) 0%, transparent 45%),
        radial-gradient(ellipse at 25% 75%, rgba(255, 180, 100, 0.15) 0%, transparent 40%),
        radial-gradient(ellipse at 50% 50%, rgba(100, 255, 180, 0.1) 0%, transparent 60%),
        linear-gradient(180deg, #0a0a0a 0%, #1a1a2e 50%, #0a0a0a 100%);
    z-index: -2;
    animation: liquidMove 30s ease-in-out infinite;
    will-change: background-position;
}

@keyframes liquidMove {
    0%, 100% {
        background-position: 0% 0%, 100% 0%, 100% 100%, 0% 100%, 50% 50%, 0% 0%;
        filter: hue-rotate(0deg);
    }
    50% {
        background-position: 5% 5%, 95% 5%, 95% 95%, 5% 95%, 50% 50%, 0% 50%;
        filter: hue-rotate(15deg);
    }
}

/* 液态玻璃噪点纹理 */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
    z-index: -1;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 液态玻璃卡片 */
.glass-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 24px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        inset 0 -1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
    transform: translateY(-8px);
    box-shadow: 
        0 20px 50px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        inset 0 -1px 0 rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.25);
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.4) 20%, 
        rgba(255, 255, 255, 0.6) 50%, 
        rgba(255, 255, 255, 0.4) 80%, 
        transparent 100%);
}

/* 按钮样式 - 液态玻璃风格 */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 16px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    outline: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.3), 
        transparent);
    transition: left 0.5s ease;
}

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

.btn-primary {
    background: linear-gradient(135deg, 
        rgba(120, 80, 255, 0.8) 0%, 
        rgba(200, 100, 255, 0.8) 50%, 
        rgba(255, 100, 150, 0.8) 100%);
    color: #fff;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 
        0 4px 20px rgba(120, 80, 255, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 
        0 12px 40px rgba(120, 80, 255, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 40px rgba(255, 255, 255, 0.15);
}

/* 节标题样式 */
.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 20px;
    color: #fff;
    position: relative;
    display: inline-block;
    text-shadow: 0 2px 20px rgba(120, 80, 255, 0.5);
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, 
        rgba(120, 80, 255, 0.8), 
        rgba(255, 100, 150, 0.8), 
        rgba(80, 200, 255, 0.8));
    border-radius: 2px;
}

.section-header p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.75);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 节间距 */
.section-padding {
    padding: 80px 0;
}

/* 顶部导航栏 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(5, 5, 15, 0.85);
    backdrop-filter: blur(40px) saturate(180%);
    -webkit-backdrop-filter: blur(40px) saturate(180%);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.3s ease;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #fff;
    font-weight: 800;
    font-size: 28px;
    letter-spacing: 1px;
}

.logo img {
    height: 45px;
    margin-right: 12px;
    filter: drop-shadow(0 0 15px rgba(120, 80, 255, 0.6));
}

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

.nav-menu ul li a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
    font-size: 16px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu ul li a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        rgba(120, 80, 255, 0.8), 
        rgba(255, 100, 150, 0.8));
    transition: width 0.3s ease;
}

.nav-menu ul li a:hover,
.nav-menu ul li a.active {
    color: #fff;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}

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

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

.hamburger span {
    width: 28px;
    height: 3px;
    background-color: #fff;
    transition: 0.3s;
    border-radius: 2px;
}

/* 主横幅区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    padding-bottom: 60px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 30%, rgba(120, 80, 255, 0.15) 0%, transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(255, 100, 150, 0.1) 0%, transparent 35%);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-content h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 25px;
    line-height: 1.1;
    background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.9) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 30px rgba(120, 80, 255, 0.3);
    animation: fadeInUp 1s ease-out;
}

.hero-content p {
    font-size: 18px;
    margin-bottom: 35px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

.hero-buttons .btn {
    animation: pulse 2s ease-in-out infinite;
}

.hero-image {
    flex: 1;
    max-width: 500px;
    position: relative;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 24px;
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.1),
        inset 0 0 0 1px rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    animation: float 8s ease-in-out infinite;
}

/* 浮动动画 */
@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-10px) rotate(0.5deg);
    }
}

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

/* 脉冲动画 */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 20px rgba(120, 80, 255, 0.4);
    }
    50% {
        transform: scale(1.03);
        box-shadow: 0 8px 30px rgba(120, 80, 255, 0.6);
    }
}

/* 关于我们 */
.about {
    background: rgba(5, 5, 15, 0.3);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.about-text {
    flex: 1;
}

.about-image {
    flex: 1;
    max-width: 450px;
}

.about-image img {
    max-width: 100%;
    height: auto;
    border-radius: 24px;
    box-shadow: 
        0 20px 50px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.1),
        inset 0 0 0 1px rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    animation: float 8s ease-in-out infinite;
}

.about-text h3 {
    font-size: 32px;
    color: #fff;
    margin-bottom: 25px;
    font-weight: 700;
}

.about-text p {
    font-size: 16px;
    margin-bottom: 25px;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.8;
}

.about-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-top: 50px;
}

.stat-item {
    text-align: center;
    animation: fadeInUp 1s ease-out backwards;
}

.stat-item:nth-child(1) { animation-delay: 0.1s; }
.stat-item:nth-child(2) { animation-delay: 0.2s; }
.stat-item:nth-child(3) { animation-delay: 0.3s; }

.stat-item h4 {
    font-size: 42px;
    font-weight: 800;
    background: linear-gradient(135deg, #7850ff 0%, #ff6496 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-item p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.65);
}

/* 服务 */
.services {
    background: rgba(5, 5, 15, 0.5);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 35px;
}

.service-item {
    animation: fadeInUp 0.8s ease-out backwards;
}

.service-item:nth-child(1) { animation-delay: 0.1s; }
.service-item:nth-child(2) { animation-delay: 0.2s; }
.service-item:nth-child(3) { animation-delay: 0.3s; }
.service-item:nth-child(4) { animation-delay: 0.4s; }
.service-item:nth-child(5) { animation-delay: 0.5s; }
.service-item:nth-child(6) { animation-delay: 0.6s; }

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(120, 80, 255, 0.2), rgba(255, 100, 150, 0.2));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-item:hover .service-icon {
    background: linear-gradient(135deg, rgba(120, 80, 255, 0.4), rgba(255, 100, 150, 0.4));
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 10px 30px rgba(120, 80, 255, 0.3);
}

.service-icon i {
    font-size: 32px;
    background: linear-gradient(135deg, #7850ff 0%, #ff6496 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.service-item h4 {
    font-size: 22px;
    color: #fff;
    margin-bottom: 15px;
    font-weight: 700;
}

.service-item p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

/* 案例研究 */
.cases {
    background: rgba(5, 5, 15, 0.3);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 35px;
}

.cases-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 12px 30px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 25px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.filter-btn:hover {
    background: rgba(120, 80, 255, 0.2);
    border-color: rgba(120, 80, 255, 0.5);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(120, 80, 255, 0.3);
}

.filter-btn.active {
    background: linear-gradient(135deg, 
        rgba(120, 80, 255, 0.8), 
        rgba(255, 100, 150, 0.8));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 8px 30px rgba(120, 80, 255, 0.4);
}

.case-item {
    animation: fadeInUp 0.8s ease-out backwards;
}

.case-item:nth-child(1) { animation-delay: 0.1s; }
.case-item:nth-child(2) { animation-delay: 0.2s; }
.case-item:nth-child(3) { animation-delay: 0.3s; }
.case-item:nth-child(4) { animation-delay: 0.4s; }

.case-image {
    width: 100%;
    height: 260px;
    border-radius: 20px;
    overflow: hidden;
    margin-bottom: 25px;
    position: relative;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.case-item:hover .case-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(120, 80, 255, 0.3) 0%, 
        rgba(255, 100, 150, 0.2) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.case-item:hover .case-image::before {
    opacity: 1;
}

.case-content h4 {
    font-size: 22px;
    color: #fff;
    margin-bottom: 12px;
    font-weight: 700;
}

.case-content p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.case-content .case-tags {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.case-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #7850ff;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.case-link:hover {
    gap: 12px;
    text-shadow: 0 0 20px rgba(120, 80, 255, 0.6);
}

.case-link i {
    transition: transform 0.3s ease;
}

.case-link:hover i {
    transform: translateX(5px);
}

.case-tag {
    padding: 6px 16px;
    background: rgba(120, 80, 255, 0.15);
    border-radius: 20px;
    font-size: 13px;
    color: rgba(120, 80, 255, 0.9);
    font-weight: 500;
}

/* 新闻 */
.news {
    background: rgba(5, 5, 15, 0.5);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 35px;
}

.news-item {
    animation: fadeInUp 0.8s ease-out backwards;
}

.news-item:nth-child(1) { animation-delay: 0.1s; }
.news-item:nth-child(2) { animation-delay: 0.2s; }
.news-item:nth-child(3) { animation-delay: 0.3s; }

.news-date {
    font-size: 14px;
    color: rgba(120, 80, 255, 0.9);
    font-weight: 600;
    margin-bottom: 15px;
}

.news-item h4 {
    font-size: 22px;
    color: #fff;
    margin-bottom: 15px;
    font-weight: 700;
    line-height: 1.4;
}

.news-item p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: 20px;
}

.news-item .read-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.news-item .read-more:hover {
    color: #7850ff;
    gap: 12px;
}

.news-item .read-more i {
    transition: transform 0.3s ease;
}

.news-item .read-more:hover i {
    transform: translateX(5px);
}

/* 联系我们 */
.contact {
    background: rgba(5, 5, 15, 0.3);
}

.contact-content {
    display: flex;
    gap: 60px;
}

.contact-info {
    flex: 1;
}

.contact-info h3 {
    font-size: 32px;
    color: #fff;
    margin-bottom: 25px;
    font-weight: 700;
}

.contact-info p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.8;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
    padding: 25px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(10px);
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(120, 80, 255, 0.2), rgba(255, 100, 150, 0.2));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
    color: #7850ff;
}

.contact-item .content h4 {
    font-size: 18px;
    color: #fff;
    margin-bottom: 5px;
    font-weight: 600;
}

.contact-item .content p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

.contact-form {
    flex: 1;
    padding: 40px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 24px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-form h3 {
    font-size: 28px;
    color: #fff;
    margin-bottom: 30px;
    font-weight: 700;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 10px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px 22px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 14px;
    font-size: 15px;
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: rgba(120, 80, 255, 0.6);
    outline: none;
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 0 4px rgba(120, 80, 255, 0.15);
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
}

/* 页脚 */
.footer {
    background: rgba(5, 5, 15, 0.8);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    color: #fff;
    padding: 70px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 50px;
    margin-bottom: 50px;
}

.footer-about {
    max-width: 350px;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 22px;
}

.footer-logo img {
    height: 45px;
    margin-right: 12px;
}

.footer-logo span {
    font-size: 26px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 1px;
}

.footer-about p {
    margin-bottom: 22px;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.8;
}

.social-links {
    display: flex;
    gap: 14px;
}

.social-links a {
    width: 46px;
    height: 46px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: linear-gradient(135deg, 
        rgba(120, 80, 255, 0.8), 
        rgba(255, 100, 150, 0.8));
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(120, 80, 255, 0.4);
    border-color: transparent;
}

.footer-links h3,
.footer-services h3,
.footer-contact h3 {
    font-size: 18px;
    margin-bottom: 22px;
    color: #fff;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.footer-links ul li,
.footer-services ul li {
    margin-bottom: 12px;
}

.footer-links ul li a,
.footer-services ul li a {
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links ul li a:hover,
.footer-services ul li a:hover {
    color: #fff;
    padding-left: 8px;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

.footer-contact ul li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 16px;
    color: rgba(255, 255, 255, 0.65);
}

.footer-contact ul li i {
    margin-right: 12px;
    margin-top: 4px;
    color: rgba(200, 150, 255, 0.9);
}

.footer-bottom {
    text-align: center;
    padding-top: 25px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.5);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

.back-to-top:hover {
    background: rgba(120, 80, 255, 0.3);
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(120, 80, 255, 0.4);
}

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

@keyframes liquidPulse {
    0%, 100% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.02);
    }
}

/* 响应式 */
@media (max-width: 1200px) {
    .hero-content h1 {
        font-size: 48px;
    }
}

@media (max-width: 992px) {
    .hero .container {
        flex-direction: column-reverse;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
        margin-top: 60px;
    }
    
    .hero-content h1 {
        font-size: 42px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .about-content {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(5, 5, 15, 0.95);
        backdrop-filter: blur(30px);
        -webkit-backdrop-filter: blur(30px);
        flex-direction: column;
        padding: 30px 0;
        transform: translateY(-150%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-menu.active {
        transform: translateY(0);
    }
    
    .nav-menu ul {
        flex-direction: column;
        gap: 0;
    }
    
    .nav-menu ul li {
        margin: 0;
    }
    
    .nav-menu ul li a {
        padding: 15px 30px;
        display: block;
    }
    
    .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(7px, -7px);
    }
    
    .hero-content h1 {
        font-size: 32px;
    }
    
    .section-header h2 {
        font-size: 32px;
    }
    
    .stat-item {
        flex: 1 0 45%;
        margin-bottom: 20px;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }
    
    .section-padding {
        padding: 60px 0;
    }
    
    .hero-content h1 {
        font-size: 28px;
    }
    
    .hero-content p {
        font-size: 15px;
    }
    
    .section-header h2 {
        font-size: 26px;
    }
    
    .section-header p {
        font-size: 15px;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }
    
    .stat-item {
        flex: 1 0 100%;
        margin-bottom: 20px;
    }
}