* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #f5f7ff 0%, #eef2ff 100%);
    color: #1e293b;
    line-height: 1.5;
}
.container {
    width: 90%;
    max-width: 1280px;
    margin: 0 auto;
}
/* 导航栏 */
.navbar {
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}
.logo {
    font-size: 1.6rem;
    font-weight: 700;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.logo i {
    color: #3b82f6;
    margin-right: 0.5rem;
}
.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
}
.nav-link {
    text-decoration: none;
    font-weight: 500;
    color: #334155;
    transition: 0.3s;
}
.nav-link:hover, .nav-link.active {
    color: #3b82f6;
}
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}
.hamburger span {
    width: 25px;
    height: 3px;
    background: #1e293b;
    margin: 3px 0;
    border-radius: 3px;
}
/* 按钮 */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.3s;
}
.btn-primary {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    box-shadow: 0 8px 20px rgba(59,130,246,0.3);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 25px rgba(59,130,246,0.4);
}
.btn-outline {
    border: 1px solid #cbd5e1;
    color: #1e293b;
}
.btn-outline:hover {
    border-color: #3b82f6;
    color: #3b82f6;
}
/* Hero */
.hero {
    padding: 5rem 0 4rem;
}
.hero-grid {
    display: flex;
    align-items: center;
    gap: 3rem;
    flex-wrap: wrap;
}
.hero-text {
    flex: 1;
}
.hero-badge {
    background: rgba(59,130,246,0.1);
    color: #3b82f6;
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}
.hero-text h1 {
    font-size: 3rem;
    font-weight: 700;
    margin: 1rem 0 1.2rem;
    line-height: 1.2;
}
.hero-text p {
    font-size: 1.1rem;
    color: #475569;
    margin-bottom: 2rem;
}
.hero-buttons {
    display: flex;
    gap: 1rem;
}
.hero-image {
    flex: 1;
}
.glass-card {
    background: rgba(255,255,255,0.5);
    border-radius: 32px;
    padding: 0.8rem;
    backdrop-filter: blur(4px);
}
.glass-card img {
    width: 100%;
    border-radius: 24px;
    display: block;
}
/* 卡片区 */
.about-cards {
    padding: 4rem 0;
}
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}
.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
}
.cards-grid {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}
.feature-card {
    background: white;
    border-radius: 32px;
    padding: 2rem;
    text-align: center;
    flex: 1;
    min-width: 240px;
    transition: 0.3s;
    box-shadow: 0 15px 30px rgba(0,0,0,0.05);
}
.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 40px rgba(0,0,0,0.1);
}
.card-icon {
    font-size: 2.5rem;
    color: #3b82f6;
    margin-bottom: 1rem;
}
/* 统计区 */
.stats {
    background: rgba(255,255,255,0.6);
    backdrop-filter: blur(8px);
    margin: 2rem 0;
    border-radius: 60px;
}
.stats-wrapper {
    display: flex;
    justify-content: space-between;
    padding: 3rem 0;
    flex-wrap: wrap;
    gap: 2rem;
}
.stat-item {
    text-align: center;
    flex: 1;
}
.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: block;
}
/* 产品页 */
.page-header {
    text-align: center;
    padding: 3rem 0 1rem;
}
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    padding: 2rem 0 4rem;
}
.product-card {
    background: white;
    border-radius: 28px;
    padding: 2rem;
    transition: 0.3s;
    box-shadow: 0 10px 25px rgba(0,0,0,0.03);
    border: 1px solid rgba(0,0,0,0.03);
}
.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 35px rgba(0,0,0,0.1);
}
.product-icon {
    font-size: 2.5rem;
    color: #3b82f6;
    margin-bottom: 1rem;
}
.product-link {
    display: inline-block;
    margin-top: 1rem;
    color: #3b82f6;
    text-decoration: none;
    font-weight: 500;
}
/* 联系页 */
.contact-wrapper {
    display: flex;
    gap: 3rem;
    flex-wrap: wrap;
    margin: 2rem 0 4rem;
}
.contact-info, .contact-form {
    flex: 1;
    background: white;
    border-radius: 32px;
    padding: 2rem;
    box-shadow: 0 15px 30px rgba(0,0,0,0.05);
}
.contact-info ul {
    list-style: none;
    margin: 1.5rem 0;
}
.contact-info li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}
.contact-info i {
    width: 30px;
    color: #3b82f6;
}
.form-group {
    margin-bottom: 1.2rem;
}
.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.9rem 1rem;
    border: 1px solid #e2e8f0;
    border-radius: 24px;
    font-family: inherit;
    transition: 0.2s;
}
.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59,130,246,0.2);
}
/* 页脚 */
.footer {
    background: #0f172a;
    color: #cbd5e1;
    padding: 3rem 0 1rem;
    margin-top: 2rem;
}
.footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 2rem;
}
.footer-col h4 {
    color: white;
    margin-bottom: 1rem;
}
.footer-col ul {
    list-style: none;
}
.footer-col a {
    color: #cbd5e1;
    text-decoration: none;
}
.footer-col a:hover {
    color: white;
}
.socials a {
    display: inline-block;
    margin-right: 1rem;
    font-size: 1.2rem;
}
.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #1e293b;
    margin-top: 2rem;
}
/* 响应式 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        padding: 2rem 0;
        gap: 1.5rem;
    }
    .nav-menu.active {
        left: 0;
    }
    .hero-text h1 {
        font-size: 2rem;
    }
    .stats-wrapper {
        flex-direction: column;
        align-items: center;
    }
    .contact-wrapper {
        flex-direction: column;
    }
}