/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* Color Variables */
:root {
    --primary-color: #3380C8;
    --secondary-color: #ffffff;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-light: #f8f9fa;
    --shadow: 0 4px 20px rgba(51, 128, 200, 0.1);
    --shadow-hover: 0 8px 30px rgba(51, 128, 200, 0.15);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: #2c6bb0;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(51, 128, 200, 0.1);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 15px;
    transition: color 0.3s ease;
    position: relative;
    padding: 0.75rem 1rem;
    display: block;
    line-height: 1.2;
    white-space: nowrap;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

/* Dropdown Menu */
.has-dropdown {
    position: relative;
}

/* PC端下拉菜单 - 箭头在文字右边 */
@media (min-width: 769px) {
    .has-dropdown > .nav-link {
        padding: 0.75rem 1rem;
        padding-right: 16px;
        position: relative;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    
    .has-dropdown > .nav-link::after {
        content: '';
        position: static;
        width: 0;
        height: 0;
        border-left: 5px solid transparent;
        border-right: 5px solid transparent;
        border-top: 5px solid var(--text-dark);
        background: none;
        transition: all 0.3s ease;
        flex-shrink: 0;
        margin-left: 4px;
        margin-top: 2px;
    }

    .has-dropdown > .nav-link:hover::after {
        border-top-color: var(--primary-color);
    }

    /* 点击后的上箭头状态 */
    .has-dropdown.active > .nav-link::after {
        border-top: none;
        border-bottom: 5px solid var(--primary-color);
        border-left: 5px solid transparent;
        border-right: 5px solid transparent;
    }
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: white;
    list-style: none;
    padding: 0.75rem 0;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    border-radius: 12px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1001;
    border: 1px solid rgba(51, 128, 200, 0.08);
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(8px);
}

.dropdown-item {
    margin: 0;
    padding: 0 0.5rem;
}

.dropdown-item:first-child {
    padding-top: 0;
}

.dropdown-item:last-child {
    padding-bottom: 0;
}

.dropdown-item .nav-link {
    padding: 0.85rem 1.25rem;
    color: var(--text-dark);
    font-size: 14px;
    display: flex;
    align-items: center;
    border-radius: 8px;
    margin: 2px 0;
    transition: all 0.3s ease;
    position: relative;
}

.dropdown-item .nav-link:hover {
    background: linear-gradient(135deg, rgba(51, 128, 200, 0.1) 0%, rgba(51, 128, 200, 0.05) 100%);
    color: var(--primary-color);
    transform: translateX(5px);
}

.dropdown-item .nav-link::after {
    display: none;
}

/* 添加箭头指示器 */
.dropdown-item .nav-link::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    border-left: 4px solid var(--primary-color);
    opacity: 0;
    transition: all 0.3s ease;
}

.dropdown-item .nav-link:hover::before {
    opacity: 1;
    left: 0.5rem;
}

/* 动画效果 - 列表项依次出现 */
.dropdown-item {
    opacity: 0;
    transform: translateX(-10px);
    animation: dropdownItemIn 0.35s ease forwards;
}

.dropdown-item:nth-child(1) { animation-delay: 0.05s; }
.dropdown-item:nth-child(2) { animation-delay: 0.1s; }
.dropdown-item:nth-child(3) { animation-delay: 0.15s; }

@keyframes dropdownItemIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.bar {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(51, 128, 200, 0.1) 0%, rgba(255, 255, 255, 0.8) 100%);
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(51, 128, 200, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(51, 128, 200, 0.1) 0%, transparent 50%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.highlight {
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--text-light);
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
}

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

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

.hero-visual {
    position: relative;
}

.hero-image-container {
    position: relative;
}

.hero-svg {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 10px 30px rgba(51, 128, 200, 0.2));
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border: 2px solid var(--primary-color);
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) rotate(45deg);
    }
    40% {
        transform: translateY(-10px) rotate(45deg);
    }
    60% {
        transform: translateY(-5px) rotate(45deg);
    }
}

/* Section Styles */
.section-padding {
    padding: 5rem 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    color: var(--text-dark);
    margin-bottom: 1rem;
}

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

/* About Preview */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.about-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid rgba(51, 128, 200, 0.1);
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.card-icon {
    margin-bottom: 1.5rem;
}

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

/* Products Preview */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.product-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.product-image {
    background: linear-gradient(135deg, var(--bg-light) 0%, #e9ecef 100%);
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-svg {
    max-width: 150px;
    height: auto;
}

.product-content {
    padding: 2rem;
}

.product-content h3 {
    color: var(--text-dark);
    margin-bottom: 1rem;
}

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

.tag {
    background: rgba(51, 128, 200, 0.1);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Capabilities Preview */
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.capability-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.capability-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.capability-icon {
    flex-shrink: 0;
}

.capability-content h3 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.capability-stat {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h4 {
    color: white;
    margin-bottom: 1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1rem;
}

.footer-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.footer-description {
    color: #ccc;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

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

.footer-links a:hover {
    color: var(--primary-color);
}

.contact-info p {
    color: #ccc;
    margin-bottom: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #555;
    color: #ccc;
}

/* Text Center */
.text-center {
    text-align: center;
}

/* Animation Classes */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in-up.animate {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.8s ease;
}

.fade-in-left.animate {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.8s ease;
}

.fade-in-right.animate {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-up.delay-1 {
    transition-delay: 0.2s;
}

.fade-in-up.delay-2 {
    transition-delay: 0.4s;
}

.fade-in-up.delay-3 {
    transition-delay: 0.6s;
}

/* Responsive Design */
@media (max-width: 768px) {
    /* 导航栏容器 */
    .navbar {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(51, 128, 200, 0.08);
        height: 60px;
    }

    .nav-container {
        padding: 0 1.25rem;
        height: 60px;
    }

    /* 汉堡按钮 - 更精致的设计 */
    .hamburger {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 44px;
        height: 44px;
        padding: 0;
        background: transparent;
        border-radius: 12px;
        cursor: pointer;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        position: relative;
        overflow: hidden;
    }

    .hamburger::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, rgba(51, 128, 200, 0.1) 0%, rgba(51, 128, 200, 0.05) 100%);
        opacity: 0;
        transition: opacity 0.3s ease;
        border-radius: 12px;
    }

    .hamburger:hover::before {
        opacity: 1;
    }

    .hamburger.active {
        background: transparent;
    }

    .hamburger.active::before {
        opacity: 1;
        background: linear-gradient(135deg, rgba(51, 128, 200, 0.15) 0%, rgba(51, 128, 200, 0.08) 100%);
    }

    .bar {
        width: 24px;
        height: 2px;
        background: var(--primary-color);
        margin: 3px 0;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        border-radius: 2px;
        transform-origin: center;
        position: relative;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
        transform: scaleX(0);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* 菜单容器 - 玻璃拟态效果 */
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 0;
        width: 85%;
        max-width: 340px;
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(30px);
        -webkit-backdrop-filter: blur(30px);
        flex-direction: column;
        align-items: stretch;
        padding: 80px 0 30px;
        gap: 0;
        transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 
            0 0 60px rgba(51, 128, 200, 0.15),
            20px 0 40px rgba(0, 0, 0, 0.1);
        overflow-y: auto;
        overflow-x: hidden;
        z-index: 999;
    }

    .nav-menu::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 200px;
        background: linear-gradient(180deg, rgba(51, 128, 200, 0.08) 0%, transparent 100%);
        pointer-events: none;
    }

    .nav-menu.active {
        left: 0;
        transform: translateX(0);
    }

    /* 菜单项样式 */
    .nav-item {
        width: 100%;
        position: relative;
        z-index: 1;
    }

    .nav-item::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 1.5rem;
        right: 1.5rem;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(51, 128, 200, 0.1), transparent);
    }

    .nav-item:last-child::after {
        display: none;
    }

    .nav-link {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 1.1rem 1.5rem;
        padding-right: 4rem;
        font-size: 16px;
        font-weight: 500;
        color: var(--text-dark);
        letter-spacing: 0.8px;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        position: relative;
        overflow: hidden;
    }

    .nav-link::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        width: 4px;
        height: 100%;
        background: linear-gradient(180deg, var(--primary-color) 0%, #5ba3e0 100%);
        transform: scaleY(0);
        transform-origin: bottom;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .nav-link span {
        position: relative;
        z-index: 1;
    }

    .nav-link:hover,
    .nav-link.active {
        color: var(--primary-color);
        background: linear-gradient(90deg, rgba(51, 128, 200, 0.06) 0%, transparent 100%);
    }

    .nav-link:hover::before,
    .nav-link.active::before {
        transform: scaleY(1);
    }

    /* 下拉箭头 */
    .has-dropdown > .nav-link {
        position: relative;
    }

    .has-dropdown > .nav-link::after {
        content: '';
        position: absolute;
        right: 1rem;
        top: 50%;
        margin-top: -12px;
        width: 24px;
        height: 24px;
        background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233380C8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") center/20px no-repeat;
        transition: transform 0.3s ease;
        flex-shrink: 0;
        opacity: 0.5;
    }

    .has-dropdown.active > .nav-link::after {
        transform: rotate(180deg);
        opacity: 1;
    }

    /* 下拉菜单 - 更精致的展开效果 */
    .dropdown-menu {
        position: static;
        width: 100%;
        max-height: 0;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: linear-gradient(180deg, 
            rgba(51, 128, 200, 0.03) 0%, 
            rgba(51, 128, 200, 0.06) 50%, 
            rgba(51, 128, 200, 0.03) 100%);
        border-radius: 0;
        padding: 0;
        margin: 0;
        overflow: hidden;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: 
            inset 0 2px 8px rgba(51, 128, 200, 0.04),
            0 4px 12px rgba(51, 128, 200, 0.05);
        border: none;
        min-width: auto;
    }

    .has-dropdown.active > .dropdown-menu {
        max-height: 500px;
    }

    /* 二级菜单项 */
    .dropdown-item {
        padding: 0;
        margin: 0;
        opacity: 1;
        transform: none;
        animation: none;
    }

    .dropdown-item .nav-link {
        padding: 0.9rem 1.5rem 0.9rem 3rem;
        font-size: 15px;
        font-weight: 400;
        color: var(--text-light);
        background: transparent;
        transition: all 0.3s ease;
        margin: 0 1rem;
        border-radius: 10px;
        position: relative;
        justify-content: flex-start;
        letter-spacing: 0.5px;
    }

    .dropdown-item .nav-link::before {
        display: none;
    }

    .dropdown-item .nav-link::after {
        display: none;
    }

    .dropdown-item .nav-link span {
        position: relative;
    }

    .dropdown-item .nav-link span::before {
        content: '';
        position: absolute;
        left: -16px;
        top: 14px;
        width: 6px;
        height: 6px;
        background: var(--primary-color);
        border-radius: 50%;
        opacity: 0;
        transition: all 0.3s ease;
    }

    .dropdown-item .nav-link:hover {
        background: rgba(51, 128, 200, 0.1);
        color: var(--primary-color);
        padding-left: 3.25rem;
    }

    .dropdown-item .nav-link:hover span::before {
        opacity: 1;
    }

    /* 菜单底部装饰 */
    .nav-menu::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 120px;
        background: linear-gradient(0deg, rgba(255, 255, 255, 0.95) 0%, transparent 100%);
        pointer-events: none;
        z-index: 2;
    }

    /* 菜单项入场动画 */
    .nav-menu.active .nav-item {
        opacity: 0;
        transform: translateX(-30px);
        animation: menuItemIn 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    }

    .nav-menu.active .nav-item:nth-child(1) { animation-delay: 0.1s; }
    .nav-menu.active .nav-item:nth-child(2) { animation-delay: 0.15s; }
    .nav-menu.active .nav-item:nth-child(3) { animation-delay: 0.2s; }
    .nav-menu.active .nav-item:nth-child(4) { animation-delay: 0.25s; }
    .nav-menu.active .nav-item:nth-child(5) { animation-delay: 0.3s; }
    .nav-menu.active .nav-item:nth-child(6) { animation-delay: 0.35s; }

    @keyframes menuItemIn {
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }

    /* 二级菜单项动画 */
    .has-dropdown.active > .dropdown-menu .dropdown-item {
        opacity: 0;
        transform: translateX(-20px);
        animation: dropdownItemIn 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    }

    .has-dropdown.active > .dropdown-menu .dropdown-item:nth-child(1) { animation-delay: 0.1s; }
    .has-dropdown.active > .dropdown-menu .dropdown-item:nth-child(2) { animation-delay: 0.2s; }
    .has-dropdown.active > .dropdown-menu .dropdown-item:nth-child(3) { animation-delay: 0.3s; }

    @keyframes dropdownItemIn {
        to {
            opacity: 1;
            transform: translateX(0);
        }
    }

    /* 自定义滚动条 */
    .nav-menu::-webkit-scrollbar {
        width: 4px;
    }

    .nav-menu::-webkit-scrollbar-track {
        background: transparent;
    }

    .nav-menu::-webkit-scrollbar-thumb {
        background: rgba(51, 128, 200, 0.2);
        border-radius: 4px;
    }

    .nav-menu::-webkit-scrollbar-thumb:hover {
        background: rgba(51, 128, 200, 0.4);
    }

    /* 菜单头部装饰 */
    .nav-menu::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 180px;
        background: linear-gradient(180deg, 
            rgba(51, 128, 200, 0.05) 0%, 
            rgba(51, 128, 200, 0.02) 50%, 
            transparent 100%);
        pointer-events: none;
        z-index: 0;
    }

    /* 触摸波纹效果 */
    .nav-link::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 50%;
        width: 0;
        height: 0;
        background: rgba(51, 128, 200, 0.1);
        border-radius: 50%;
        transform: translate(-50%, -50%);
        transition: width 0.4s ease, height 0.4s ease, opacity 0.4s ease;
        opacity: 0;
        z-index: 0;
        pointer-events: none;
    }

    .nav-link:active::after {
        width: 200px;
        height: 200px;
        opacity: 1;
        transition: width 0s, height 0s, opacity 0s;
    }

    /* 激活状态的光晕效果 */
    .nav-link.active::before {
        box-shadow: 
            0 0 20px rgba(51, 128, 200, 0.3),
            0 0 40px rgba(51, 128, 200, 0.1);
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .section-padding {
        padding: 3rem 0;
    }

    .about-grid,
    .products-grid,
    .capabilities-grid {
        grid-template-columns: 1fr;
    }

    .capability-item {
        flex-direction: column;
        text-align: center;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    h1 {
        font-size: 2rem;
    }

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

    .nav-container {
        padding: 1rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .about-card,
    .product-card,
    .capability-item {
        padding: 1.5rem;
    }
}