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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 35, 126, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: #ffc107;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: #ffc107;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ffc107;
    transition: width 0.3s ease;
}

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

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* 英雄区域样式 */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a237e 0%, #3f51b5 50%, #00bcd4 100%);
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: -1;
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.float-element {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 193, 7, 0.1);
    animation: float 6s ease-in-out infinite;
}

.float-1 {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.float-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.float-3 {
    width: 80px;
    height: 80px;
    bottom: 20%;
    left: 70%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 1;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.title-line {
    display: block;
    opacity: 0;
    animation: slideInUp 1s ease forwards;
}

.title-line:nth-child(1) { animation-delay: 0.2s; }
.title-line:nth-child(2) { animation-delay: 0.4s; }
.title-line:nth-child(3) { animation-delay: 0.6s; }

.highlight {
    color: #ffc107;
    text-shadow: 0 0 20px rgba(255, 193, 7, 0.5);
}

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

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeIn 1s ease forwards 0.8s;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeIn 1s ease forwards 1s;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffc107;
    font-family: 'Montserrat', sans-serif;
}

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

.cta-button {
    position: relative;
    background: linear-gradient(45deg, #ffc107, #ff9800);
    border: none;
    padding: 15px 40px;
    border-radius: 50px;
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
    opacity: 0;
    animation: fadeIn 1s ease forwards 1.2s;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 193, 7, 0.4);
}

.button-glow {
    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;
}

.cta-button:hover .button-glow {
    left: 100%;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    animation: fadeIn 1s ease forwards 1.4s;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border-right: 2px solid white;
    border-bottom: 2px solid white;
    transform: rotate(45deg);
    animation: bounce 2s infinite;
}

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

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

/* 通用区域样式 */
section {
    padding: 100px 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1a237e;
    margin-bottom: 1rem;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(45deg, #ffc107, #ff9800);
}

.section-subtitle {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们区域 */
.about {
    background: #f8f9fa;
}

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

.company-intro h3 {
    font-size: 1.5rem;
    color: #1a237e;
    margin-bottom: 1rem;
}

.company-intro p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.timeline {
    margin-top: 2rem;
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-year {
    background: #1a237e;
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    margin-right: 2rem;
    min-width: 80px;
    text-align: center;
}

.timeline-content h4 {
    color: #1a237e;
    margin-bottom: 0.5rem;
}

.image-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.gallery-item {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-5px);
}

.gallery-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.gallery-item:first-child {
    grid-column: span 2;
}

.gallery-item:first-child img {
    height: 250px;
}

/* 业务服务区域 */
.services {
    background: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    position: relative;
    height: 400px;
    perspective: 1000px;
    cursor: pointer;
}

.card-front,
.card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.6s ease;
}

.card-front {
    background: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.card-back {
    background: linear-gradient(135deg, #1a237e, #3f51b5);
    color: white;
    transform: rotateY(180deg);
}

.service-card:hover .card-front {
    transform: rotateY(-180deg);
}

.service-card:hover .card-back {
    transform: rotateY(0);
}

.service-icon {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    margin-bottom: 1.5rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.service-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-front h3 {
    font-size: 1.5rem;
    color: #1a237e;
    margin-bottom: 1rem;
}

.card-back h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.card-back ul {
    list-style: none;
    margin-bottom: 1.5rem;
}

.card-back li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.card-back li::before {
    content: '✓';
    color: #ffc107;
    font-weight: bold;
    margin-right: 0.5rem;
}

.service-images {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.service-images img {
    width: 100%;
    height: 60px;
    object-fit: cover;
    border-radius: 5px;
}

/* 专业优势区域 */
.advantages {
    position: relative;
    background: #1a237e;
    color: white;
    overflow: hidden;
}

.parallax-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 120%;
    z-index: -1;
    opacity: 0.3;
}

.parallax-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-10px);
}

.stat-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 1.5rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.stat-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.stat-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #ffc107;
}

/* 文化特色区域 */
.culture {
    background: #f8f9fa;
}

.culture-gallery {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.culture-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.culture-item {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    height: 250px;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.culture-item:hover {
    transform: scale(1.05);
}

.culture-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.culture-item:hover img {
    transform: scale(1.1);
}

.culture-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 2rem 1rem 1rem;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.culture-item:hover .culture-overlay {
    transform: translateY(0);
}

.culture-overlay h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #ffc107;
}

/* 联系我们区域 */
.contact {
    background: white;
}

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

.info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.info-item:hover {
    transform: translateX(10px);
}

.info-icon {
    font-size: 1.5rem;
    margin-right: 1rem;
    margin-top: 0.2rem;
}

.info-text h4 {
    color: #1a237e;
    margin-bottom: 0.5rem;
}

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

.contact-form h3 {
    color: #1a237e;
    margin-bottom: 1.5rem;
    text-align: center;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1a237e;
}

.submit-btn {
    width: 100%;
    background: linear-gradient(45deg, #1a237e, #3f51b5);
    color: white;
    border: none;
    padding: 15px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(26, 35, 126, 0.3);
}

/* 页脚样式 */
.footer {
    background: #1a237e;
    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 h3,
.footer-section h4 {
    color: #ffc107;
    margin-bottom: 1rem;
}

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

.footer-section li {
    padding: 0.3rem 0;
    opacity: 0.8;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 1rem;
    text-align: center;
    opacity: 0.7;
}

/* 粒子效果 */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: rgba(26, 35, 126, 0.95);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .advantage-stats {
        grid-template-columns: 1fr;
    }

    .culture-row {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

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

    .timeline-year {
        margin-right: 0;
        margin-bottom: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

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

    .container {
        padding: 0 15px;
    }

    section {
        padding: 60px 0;
    }
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

/* 加载动画 */
.loading {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

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