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

:root {
    --primary-color: #4a6cf7;
    --secondary-color: #7b61ff;
    --accent-color: #ff6b6b;
    --background-color: #f0f2f5;
    --text-color: #333;
    --light-text: #666;
    --white: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.95);
    --shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(74, 108, 247, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(123, 97, 255, 0.05) 0%, transparent 20%);
}

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

/* 头部样式 */
header {
    background-color: var(--card-bg);
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(74, 108, 247, 0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 40px 0;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo img {
    height: 30px;
    width: auto;
    transition: transform 0.3s ease;
}

.logo img:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 40px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 18px;
    transition: all 0.3s ease;
    position: relative;
}

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

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

.nav-links a:hover::after {
    width: 100%;
}

.login-btn {
    background: var(--primary-color);
    color: var(--white);
    padding: 12px 24px;
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 16px;
    border: none;
}

.login-btn:hover {
    background: var(--secondary-color);
    color: var(--white);
}

/* 主图轮播样式 */
.carousel {
    position: relative;
    height: 600px;
    overflow: hidden;
    border-radius: 0 0 30px 30px;
    box-shadow: var(--shadow);
}

.carousel-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.carousel-item.active {
    opacity: 1;
}

.carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 80px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: var(--white);
}

.carousel-caption h2 {
    font-size: 48px;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease-out;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.carousel-caption p {
    font-size: 20px;
    max-width: 800px;
    animation: fadeInUp 1s ease-out 0.3s both;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.carousel-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 40px;
}

.carousel-control {
    background: var(--gradient);
    color: var(--white);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    border: none;
}

.carousel-control:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(74, 108, 247, 0.5);
}

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

/* 区块样式 */
.section {
    padding: 100px 0;
}

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

.section-title h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: #333;
}

.section-title p {
    font-size: 18px;
    color: #666;
    max-width: 800px;
    margin: 0 auto;
}

/* 服务卡片样式 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.service-card {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.index-service-card {
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    height: 300px;
    justify-content: center;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(74, 108, 247, 0.1), transparent);
    transition: left 0.5s ease;
}

.service-card:hover::before {
    left: 100%;
}

.service-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    border-color: rgba(74, 108, 247, 0.3);
}

.service-card i {
    font-size: 48px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
    display: inline-block;
}

.service-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--text-color);
    position: relative;
    z-index: 1;
}

.service-card p {
    color: var(--light-text);
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* 关于我们样式 */
.about-content {
    display: flex;
    align-items: center;
    gap: 60px;
    padding: 40px;
    background-color: var(--card-bg);
    border-radius: 20px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.about-content img,
.about-video {
    width: 50%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    transition: transform 0.3s ease;
}

.about-content img:hover,
.about-video:hover {
    transform: scale(1.02);
}

.about-text {
    width: 50%;
}

.about-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-color);
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--light-text);
    line-height: 1.6;
}

/* 联系我们样式 */
.contact-content {
    display: flex;
    gap: 60px;
    padding: 40px;
    background-color: var(--card-bg);
    border-radius: 20px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-info {
    width: 50%;
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 30px;
    color: var(--text-color);
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
    padding: 15px;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.contact-item i {
    font-size: 24px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-right: 20px;
    margin-top: 5px;
}

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

.contact-form {
    width: 50%;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 500;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid rgba(74, 108, 247, 0.1);
    border-radius: 10px;
    font-size: 16px;
    background-color: rgba(255, 255, 255, 0.9);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.submit-btn {
    background: var(--gradient);
    color: var(--white);
    padding: 15px 30px;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(74, 108, 247, 0.3);
    font-weight: 500;
    width: 100%;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 108, 247, 0.4);
}

/* 登录页面样式 */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--background-color);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(74, 108, 247, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(123, 97, 255, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 50% 50%, rgba(255, 107, 107, 0.05) 0%, transparent 30%);
}

.login-container {
    background-color: var(--card-bg);
    padding: 60px;
    border-radius: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    max-width: 600px;
    width: 90%;
    backdrop-filter: blur(200px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(74, 108, 247, 0.1), transparent);
    animation: rotate 10s linear infinite;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.login-container h2 {
    font-size: 32px;
    margin-bottom: 40px;
    text-align: center;
    color: var(--text-color);
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    z-index: 1;
    white-space: nowrap;
}

.login-form {
    position: relative;
    z-index: 1;
}

.login-form .form-group {
    margin-bottom: 25px;
}

.login-form .submit-btn {
    width: 100%;
    padding: 15px;
    font-size: 18px;
    margin-top: 30px;
    position: relative;
    z-index: 1;
}

.login-form input[type="checkbox"] {
    accent-color: var(--primary-color);
}

/* 页脚样式 */
footer {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    color: var(--white);
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient);
}

footer::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(74, 108, 247, 0.05), transparent);
    animation: slide 10s linear infinite;
}

@keyframes slide {
    0% { left: -100%; }
    100% { left: 100%; }
}

.footer-content {
    position: relative;
    z-index: 1;
}

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

.footer-logo {
    margin-bottom: 20px;
}

.footer-logo img {
    height: 55px;
    width: auto;
    transition: transform 0.3s ease;
}

.footer-logo img:hover {
    transform: scale(1.05);
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 20px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

.footer-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

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

.footer-links a:hover::after {
    width: 100%;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 40px;
    padding-top: 20px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    position: relative;
    z-index: 1;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .carousel-caption h2 {
        font-size: 32px;
    }
    
    .carousel-caption p {
        font-size: 16px;
    }
    
    .about-content {
        flex-direction: column;
        text-align: center;
    }
    
    .about-content img,
    .about-video,
    .about-text {
        width: 100%;
    }
    
    .contact-content {
        flex-direction: column;
    }
    
    .contact-info,
    .contact-form {
        width: 100%;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }

    .logo img {
        height: 25px;
    }
}

/* 加载动画 */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--background-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-top: 5px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 滚动动画 */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}