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

body {
    margin: 0;
    padding: 0;
    font-family: 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
}

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

header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(33, 150, 243, 0.2);
    backdrop-filter: blur(10px);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 10;
}

.logo-img {
    width: 32px;
    height: 32px;
    border-radius: 4px;
    object-fit: cover;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2196F3;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #2196F3;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    display: none;
}

.contact-btn:hover {
    background: rgba(33, 150, 243, 0.2);
    border-color: rgba(33, 150, 243, 0.3);
    transform: translateY(-1px);
    color: white;
}

.mobile-menu {
    display: none;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 1002;
}

/* 桌面端导航菜单样式 */
@media (min-width: 769px) {
    .nav-links {
        display: flex !important;
    }
}

/* 移动端样式 */
@media (max-width: 768px) {
    /* 隐藏桌面端头部导航 */
    header {
        display: none;
    }
    
    /* 移动端头部导航样式 - 当桌面端header隐藏时显示 */
    .mobile-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
        color: white;
        z-index: 1000;
        box-shadow: 0 2px 20px rgba(33, 150, 243, 0.2);
        backdrop-filter: blur(10px);
        transform: translateY(-100%);
        transition: transform 0.3s ease;
    }
    
    .mobile-header.show {
        transform: translateY(0);
    }
    
    .mobile-header.hide {
        transform: translateY(-100%);
    }
    
    /* 移动端导航样式 */
    .mobile-nav {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        background: rgba(26, 26, 46, 0.95);
        backdrop-filter: blur(10px);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
    }
    
    .mobile-nav.open {
        max-height: calc(100vh - 56px);
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }
    
    /* 当桌面端header显示时，完全隐藏移动端导航 */
    body.desktop-view .mobile-nav {
        display: none !important;
    }
    
    .mobile-header-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.8rem 1rem;
    }
    
    .mobile-logo {
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }
    
    .mobile-logo .logo-img {
        width: 28px;
        height: 28px;
        border-radius: 4px;
        object-fit: cover;
    }
    
    .mobile-logo .logo-text {
        font-size: 1.2rem;
        font-weight: bold;
        color: #2196F3;
    }
    
    .mobile-menu-toggle {
        display: flex;
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 8px;
        color: white;
        font-size: 1.5rem;
        cursor: pointer;
        padding: 0.4rem 0.6rem;
        width: 40px;
        height: 40px;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
    }
    
    /* 移动端导航样式 - 统一管理，避免重复定义 */
    /* 注意：已在上面定义过，这里避免重复 */
    
    .mobile-nav-links {
        list-style: none;
        margin: 0;
        padding: 1rem;
    }
    
    .mobile-nav-links li {
        margin-bottom: 1rem;
    }
    
    .mobile-nav-links a {
        color: white;
        text-decoration: none;
        font-size: 1.1rem;
        display: block;
        padding: 0.8rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        transition: color 0.3s;
    }
    
    .mobile-nav-links a:hover {
        color: #2196F3;
    }
    
    /* 桌面端默认隐藏，PC端显示联系按钮，移动端显示汉堡菜单 */
    .contact-btn {
        display: none;
    }
    
    .mobile-menu {
        display: none !important;
    }
    
    /* 导航菜单移动端样式 - 默认隐藏 */
    .nav-links {
        position: fixed;
        top: 60px;
        right: -100%;
        width: 70%;
        height: calc(100vh - 60px);
        background: rgba(26, 26, 46, 0.95);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 2rem;
        transition: right 0.3s ease;
        z-index: 999;
        display: none;
    }
    
    /* 导航菜单展开样式 - 从右侧滑入 */
    nav.open .nav-links {
        right: 0;
        display: flex;
    }
    
    .nav-links li {
        margin-bottom: 1.5rem;
    }
    
    .nav-links a {
        font-size: 1.1rem;
        color: rgba(255, 255, 255, 0.9);
        padding: 0.5rem 0;
    }
    
    /* 确保移动端菜单按钮在菜单展开时不被隐藏 */
    nav.open .mobile-menu {
        position: relative;
        z-index: 1001;
    }
    
    /* 菜单展开时的背景遮罩 */
    nav.open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 998;
    }
}

.hero {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: white;
    padding: 100px 0 80px;
    min-height: 600px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(33, 150, 243, 0.2);
    border: 1px solid rgba(33, 150, 243, 0.3);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 16px;
    color: #e3f2fd;
    backdrop-filter: blur(10px);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: #e0e0e0;
    margin-bottom: 30px;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px;
    width: 120px;
    height: 120px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 700;
    color: #2196F3;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(33, 150, 243, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(33, 150, 243, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(33, 150, 243, 0.08) 0%, transparent 50%);
    animation: float 6s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(33, 150, 243, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(33, 150, 243, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(1deg); }
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

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

.hero-visual {
    flex: 0 0 45%;
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 25px;
    padding: 0.5rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: white;
    margin-bottom: 1.5rem;
    animation: badgePulse 3s ease-in-out infinite;
}

.badge-icon {
    width: 18px;
    height: 18px;
    color: #FFD700;
}

@keyframes badgePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: white;
}

.title-main {
    display: block;
    margin-bottom: 0.2rem;
}

.title-highlight {
    background: linear-gradient(135deg, #2196F3, #64B5F6, #81C784);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(33, 150, 243, 0.5);
    display: block;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    line-height: 1.6;
    font-weight: 300;
}



.cta-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.9rem 1.8rem;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    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, 0.2), transparent);
    transition: left 0.5s;
}

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

.btn-primary {
    background: linear-gradient(135deg, #2196F3, #1976D2);
    color: white;
    box-shadow: 0 8px 25px rgba(33, 150, 243, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(33, 150, 243, 0.4);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 0.8rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: floatCard 4s ease-in-out infinite;
    z-index: 3;
}

.card-1 {
    top: 20px;
    left: -20px;
    animation-delay: 0s;
}

.card-2 {
    top: 80px;
    right: -30px;
    animation-delay: 1s;
}

.card-3 {
    bottom: 30px;
    left: -10px;
    animation-delay: 2s;
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(1deg); }
}

.card-icon {
    font-size: 1.2rem;
}

.card-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: #333;
}

.hero-main-visual {
    position: relative;
    z-index: 2;
    animation: mainVisualFloat 6s ease-in-out infinite;
}

@keyframes mainVisualFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(0.5deg); }
}

.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, #2196F3, #1976D2);
    color: white;
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.hero-illustration {
    width: 100%;
    max-width: 500px;
}

.hero-illustration svg {
    width: 100%;
    height: auto;
}

.tech-stack {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.tech-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(33, 150, 243, 0.3);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.tech-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(33, 150, 243, 0.2), transparent);
    transition: left 0.5s ease;
}

.tech-item:hover::before {
    left: 100%;
}

.tech-item:hover {
    border-color: #2196F3;
    box-shadow: 0 0 20px rgba(33, 150, 243, 0.3);
    transform: translateY(-2px);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    opacity: 1;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #2196F3;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, #2196F3, #1976D2);
    color: white;
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1976D2, #0D47A1);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(33, 150, 243, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #28383c;
}

.services {
    padding: 80px 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #28383c;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

/* 平板端：741px - 1024px */
@media (max-width: 1024px) and (min-width: 741px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .hero-content {
        gap: 2rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-features {
        gap: 1rem;
    }
    
    .feature-item {
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 0.7rem 1.2rem;
    }
}

/* 小屏幕平板：481px - 740px */
@media (max-width: 740px) and (min-width: 481px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
    }
    
    .hero-visual {
        margin-top: 15px;
        max-width: 500px;
    }
    
    .hero-stats {
        gap: 15px;
        justify-content: center;
    }
    
    .stat-item {
        padding: 15px;
        width: 100px;
        height: 100px;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .stat-label {
        font-size: 0.85rem;
    }
    
    .tech-stack {
        gap: 8px;
    }
    
    .tech-item {
        font-size: 0.85rem;
        padding: 5px 10px;
    }
    
    .pricing-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* 移动端：480px及以下 */
@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
        margin-bottom: 1rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .contact-us .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-top: 2rem;
    }
    
    .contact-item {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .qr-code {
        max-width: 240px;
        padding: 1rem;
    }
    
    .section-button {
        margin-top: 2rem;
    }
    
    .case-card {
        margin-bottom: 1rem;
    }
    
    /* 移动端hero区域优化 */
    .hero {
        padding-top: 4rem;
        padding-bottom: 3rem;
        min-height: auto;
        background: linear-gradient(135deg, #0f1419 0%, #1a237e 50%, #283593 100%);
        position: relative;
    }
    
    .hero::before {
        background: 
            radial-gradient(circle at 30% 20%, rgba(33, 150, 243, 0.15) 0%, transparent 50%),
            radial-gradient(circle at 80% 60%, rgba(33, 150, 243, 0.1) 0%, transparent 50%);
        animation: none;
    }
    
    .hero::after {
        background: none;
        animation: none;
    }
    
    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 2.5rem;
        position: relative;
        z-index: 2;
    }
    
    .hero-text {
        max-width: 100%;
    }
    
    .hero-badge {
        padding: 0.4rem 1rem;
        font-size: 0.8rem;
        margin-bottom: 1.5rem;
        justify-content: center;
    }
    
    .badge-icon {
        width: 16px;
        height: 16px;
    }
    
    .hero-title {
        text-align: center;
        font-size: 2.5rem;
        line-height: 1.1;
        margin-bottom: 1.5rem;
        color: white;
        font-weight: 800;
    }
    
    .title-main {
        display: block;
        margin-bottom: 0.3rem;
    }
    
    .title-highlight {
        display: block;
        background: linear-gradient(135deg, #2196F3, #64B5F6);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
        text-shadow: 0 0 20px rgba(33, 150, 243, 0.3);
    }
    
    .hero-subtitle {
        text-align: center;
        font-size: 1.1rem;
        line-height: 1.5;
        margin-bottom: 2rem;
        color: rgba(255,255,255,0.9);
        max-width: 95%;
        font-weight: 300;
    }
    
    .hero-visual {
        width: 100%;
        height: 300px;
        margin-top: 1rem;
    }
    

    
    .cta-buttons {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
        padding: 0.8rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .btn-icon {
        width: 18px;
        height: 18px;
    }
    
    .floating-card {
        display: none;
    }
    
    .tech-stack {
        display: flex;
        justify-content: center;
        gap: 6px;
        margin-bottom: 0;
    }
    
    .tech-item {
        font-size: 0.75rem;
        padding: 4px 8px;
    }
    
    /* 移动端导航优化 */
    .logo {
        gap: 0.3rem;
    }
    
    .logo-text {
        font-size: 1.1rem;
    }
    
    .logo-img {
        width: 24px;
        height: 24px;
    }
    
    /* 移动端菜单按钮优化 */
    .mobile-menu {
        display: block;
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 8px;
        padding: 0.5rem;
        width: 44px;
        height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: all 0.3s ease;
        backdrop-filter: blur(10px);
    }
    
    .mobile-menu:hover {
        background: rgba(255, 255, 255, 0.2);
        transform: translateY(-1px);
    }
    
    .mobile-menu:active {
        transform: translateY(0);
    }
    
    /* 确保移动端按钮始终可见 */
    .nav-right {
        z-index: 10;
        position: relative;
    }
    
    /* 调整移动端header高度 */
    header {
        padding: 0.8rem 0;
        min-height: 60px;
    }
    
    /* 移动端菜单展开样式 */
    nav.open .nav-links {
        display: flex !important;
        flex-direction: column;
        position: fixed;
        top: 60px;
        left: 1rem;
        right: 1rem;
        background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
        padding: 1.5rem;
        border-radius: 12px;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
        z-index: 999;
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.1);
        animation: slideDown 0.3s ease-out;
    }
    
    nav.open .nav-links li {
        margin: 0.8rem 0;
        text-align: center;
    }
    
    nav.open .nav-links a {
        font-size: 1.1rem;
        padding: 0.8rem 1rem;
        border-radius: 8px;
        transition: background 0.3s ease;
        display: block;
        color: white;
    }
    
    nav.open .nav-links a:hover {
        background: rgba(255, 255, 255, 0.1);
        color: #2196F3;
    }
    
    /* 菜单展开动画 */
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    nav.open .nav-right {
        /* 确保 .nav-right 容器不会在菜单打开时显示 */
        /* 移动端 .nav-right 应该在菜单打开时保持原状 */
    }
    
    /* 确保菜单展开时只显示导航链接，而不是整个 .nav-right 容器 */
    nav.open .nav-links {
        display: flex !important;
    }
    
    /* 菜单项展开动画 */
    @keyframes slideLeft {
        from {
            opacity: 0;
            transform: translateX(20px);
        }
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }
    
    nav.open .nav-right .contact-btn {
        display: block;
        background: transparent;
        padding: 0;
        box-shadow: none;
        color: white;
        font-size: 0.9rem;
    }
    
    nav.open .nav-right .contact-btn:hover {
        transform: none;
        color: rgba(255, 255, 255, 0.8);
    }
    
    /* 确保移动端菜单按钮在菜单展开时不被隐藏 */
    nav.open .mobile-menu {
        position: relative;
        z-index: 1001;
    }
    
    /* 菜单展开时的背景遮罩 */
    nav.open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 998;
    }
}

.service-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e9ecef;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #2196F3;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #28383c;
}

.service-card p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

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

.service-features li {
    color: #555;
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
}

.service-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #2196F3;
    font-weight: bold;
}



.process {
    padding: 80px 0;
    background: #f8f9fa;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: #2196F3;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.step h3 {
    margin-bottom: 1rem;
    color: #28383c;
}

.step p {
    color: #666;
}

.cases {
    padding: 80px 0;
    background: white;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.section-button {
    text-align: center;
    margin-top: 3rem;
}

.case-card {
    background: #f8f9fa;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
}

.case-image {
    height: 200px;
    background: linear-gradient(45deg, #1a1a2e, #2196F3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-content {
    padding: 1.5rem;
}

.case-content h3 {
    margin-bottom: 1rem;
    color: #28383c;
}

.case-content p {
    color: #666;
    margin-bottom: 1rem;
}

.case-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: #2196F3;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
}

.testimonials {
    padding: 80px 0;
    background: #f8f9fa;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.testimonial-content {
    font-style: italic;
    margin-bottom: 1.5rem;
    color: #555;
    line-height: 1.6;
}

.testimonial-rating {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stars {
    display: flex;
    gap: 0.2rem;
}

.star {
    color: #FFD700;
    font-size: 1.2rem;
    font-weight: bold;
}

.star.empty {
    color: #ddd;
}

.rating-text {
    color: #666;
    font-size: 0.9rem;
    font-weight: 500;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: #2196F3;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.author-info h4 {
    color: #28383c;
    margin-bottom: 0.25rem;
}

.author-info p {
    color: #666;
    font-size: 0.9rem;
}

.contact {
    padding: 80px 0;
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.contact-info h3 {
    color: #28383c;
    margin-bottom: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: #2196F3;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.contact-form {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #28383c;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #2196F3;
    box-shadow: 0 0 15px rgba(33, 150, 243, 0.4);
}

.recommendation {
    padding: 40px 0;
    background: linear-gradient(45deg, #1a1a2e, #2196F3);
    color: white;
    text-align: center;
}

.recommendation h3 {
    margin-bottom: 1rem;
}

.recommendation a {
    color: #2196F3;
    background: white;
    padding: 10px 25px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.recommendation a:hover {
    background: #f8f9fa;
    transform: translateY(-2px);
}

.recommendation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.recommendation-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: left;
}

.recommendation-card h4 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.recommendation-card p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

/* 联系我们部分 */
.contact-us {
    padding: 80px 0;
    background: linear-gradient(45deg, #1a1a2e, #2196F3);
    position: relative;
}

.contact-us::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.contact-us .contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
    position: relative;
    z-index: 1;
}

.contact-info h3 {
    color: white;
    margin-bottom: 2rem;
    font-size: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* 联系我们部分的标题和副标题样式 */
.contact-us .section-title {
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.contact-us .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #2196F3, #1976D2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.contact-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.contact-item p {
    color: #2196F3;
    font-weight: 600;
    margin: 0;
}

.qr-code {
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    height: fit-content;
    max-width: 310px;
    margin: 0 auto;
}

.qr-code h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.qr-code-container {
    display: flex;
    justify-content: center;
    margin-bottom: 1rem;
}

.qr-code-placeholder {
    width: 100%;
    max-width: 150px;
    height: 150px;
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #666;
    overflow: hidden;
    padding: .5rem;
}

.qr-code-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.qr-code-placeholder svg {
    color: #2196F3;
    margin-bottom: 1rem;
}

.qr-code-placeholder p {
    font-size: 0.9rem;
    color: #999;
}

.qr-desc {
    color: #666;
    font-size: 0.95rem;
    margin: 0;
}

/* 回到顶部按钮样式 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2196F3, #1976D2);
    color: white;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top.show {
    display: flex;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(33, 150, 243, 0.4);
}

/* 价格版权页脚 */
.pricing-footer {
    background: linear-gradient(135deg, #28383c 0%, #1a1a2e 100%);
    color: white;
    padding: 60px 0 30px;
    margin-top: 0;
}

.pricing-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.pricing-info h3 {
    color: #2196F3;
    font-size: 1.5rem;
    margin-bottom: 2rem;
    text-align: left;
}

.pricing-table {
    display: grid;
    gap: 1rem;
}

.price-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.price-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.service-name {
    font-weight: 500;
    color: white;
}

.price-range {
    font-weight: 600;
    color: #2196F3;
    font-size: 1.1rem;
}

.copyright-info {
    text-align: right;
    padding-left: 2rem;
    border-left: 1px solid rgba(255, 255, 255, 0.2);
}

.copyright-info p {
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.copyright-info p:first-child {
    font-weight: 600;
    color: white;
    font-size: 1.1rem;
}

.copyright-info p:last-child {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

footer {
    background: #28383c;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: #2196F3;
}

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: #2196F3;
}

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

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



/* 桌面端显示联系按钮，隐藏移动端菜单按钮 */
@media (min-width: 769px) {
    .contact-btn {
        display: inline-block;
    }
    
    .mobile-menu {
        display: none;
    }
}

/* 移动端样式 */
@media (max-width: 768px) {
    /* 桌面端默认隐藏，PC端显示联系按钮，移动端显示汉堡菜单 */
    .contact-btn {
        display: none;
    }
    
    .mobile-menu {
        display: flex !important;
    }
    
    /* 导航菜单移动端样式 */
    .nav-links {
        position: fixed;
        top: 60px;
        right: -100%;
        width: 70%;
        height: calc(100vh - 60px);
        background: rgba(26, 26, 46, 0.95);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 2rem;
        transition: right 0.3s ease;
        z-index: 999;
    }
    
    nav.open .nav-links {
        right: 0;
    }
    
    .nav-links li {
        margin-bottom: 1.5rem;
    }
    
    .nav-links a {
        font-size: 1.1rem;
        color: rgba(255, 255, 255, 0.9);
        padding: 0.5rem 0;
    }
    
    /* 确保移动端菜单按钮在菜单展开时不被隐藏 */
    nav.open .mobile-menu {
        position: relative;
        z-index: 1001;
    }
    
    /* 菜单展开时的背景遮罩 */
    nav.open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 998;
    }
}

    .hero {
        padding: 80px 0 60px;
    }

    .hero-content {
        flex-direction: row;
        gap: 1.5rem;
        text-align: left;
        align-items: center;
    }

    .hero-text {
        flex: 1;
    }

    .hero-visual {
        flex: 0 0 300px;
        order: 0;
    }

    .hero-visual svg {
        max-width: 280px;
    }

    .hero h1 {
        font-size: 1.8rem;
        text-align: left;
    }

    .hero p {
        text-align: left;
        max-width: 100%;
        font-size: 1rem;
    }

    .cta-buttons {
        flex-direction: row;
        gap: 1rem;
    }

    .tech-stack {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .tech-item {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
    }

    .stat-item {
        padding: 1rem;
    }

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

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



/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: #fff;
    margin: 5% auto;
    padding: 0;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease;
}

.modal-header {
    background: linear-gradient(135deg, #2196F3, #1976D2);
    color: white;
    padding: 1.5rem;
    border-radius: 12px 12px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.5rem;
}

.close {
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.close:hover {
    opacity: 1;
}

.modal-body {
    padding: 2rem;
}

.contact-options {
    margin-bottom: 2rem;
}

.contact-option {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    margin-bottom: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    transition: all 0.3s ease;
    background: #fafafa;
}

.contact-option:hover {
    border-color: #2196F3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.15);
}

.contact-option-icon {
    font-size: 2rem;
    margin-right: 1rem;
    width: 60px;
    text-align: center;
}

.contact-option-info {
    flex: 1;
}

.contact-option-info h4 {
    margin: 0 0 0.5rem 0;
    color: #333;
    font-size: 1.1rem;
}

.contact-option-info p {
    margin: 0 0 0.5rem 0;
    color: #2196F3;
    font-weight: bold;
    font-size: 1rem;
}

.contact-option-info small {
    color: #666;
    font-size: 0.85rem;
}

.contact-btn {
    background: linear-gradient(135deg, #2196F3, #1976D2);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.contact-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(33, 150, 243, 0.3);
}

.contact-info-details {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #2196F3;
}

.contact-info-details h4 {
    margin: 0 0 0.5rem 0;
    color: #333;
    font-size: 1rem;
}

.contact-info-details p {
    margin: 0 0 1rem 0;
    color: #666;
    font-size: 0.9rem;
}

.contact-info-details h4:last-child,
.contact-info-details p:last-child {
    margin-bottom: 0;
}

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: 2% auto;
    }

    .modal-header {
        padding: 1rem;
    }

    .modal-header h3 {
        font-size: 1.2rem;
    }

    .modal-body {
        padding: 1.5rem;
    }

    .contact-option {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }

    .contact-option-icon {
        margin-right: 0;
        margin-bottom: 0.5rem;
    }

    .contact-btn {
        margin-top: 1rem;
        width: 100%;
    }
    
    /* 联系我们移动端样式 */
    .contact-us .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-item {
        padding: 1rem;
    }
    
    .contact-icon {
        width: 40px;
        height: 40px;
    }
    
    .qr-code-placeholder {
        width: 160px;
        height: 160px;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }
    
    /* 价格版权页脚移动端样式 */
    .pricing-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .pricing-info h3 {
        text-align: center;
    }
    
    .price-item {
        padding: 0.8rem 1rem;
    }
    
    .service-name {
        font-size: 0.9rem;
    }
    
    .price-range {
        font-size: 1rem;
    }
    
    .copyright-info {
        text-align: center;
        padding-left: 0;
        border-left: none;
        border-top: 1px solid rgba(255, 255, 255, 0.2);
        padding-top: 2rem;
    }
}