:root {
    --primary-color: #ff6b35;
    --secondary-color: #f7931e;
    --accent-color: #007bff;
    --dark-color: #333;
    --light-color: #fff;
    --gray-light: #f8f9fa;
    --gray-medium: #e9ecef;
    --gray-dark: #6c757d;
    --gradient-primary: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    --gradient-secondary: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    --gradient-accent: linear-gradient(135deg, #28a745 0%, #1e7e34 100%);
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.8;
    color: var(--dark-color);
    background-color: var(--gray-light);
    overflow-x: hidden;
}

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

/* 头部样式 */
header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

header.scrolled {
    padding: 10px 0;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    transition: var(--transition);
}

.logo {
    font-size: 28px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    font-size: 32px;
    color: var(--primary-color);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav ul li a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 600;
    font-size: 16px;
    position: relative;
    transition: var(--transition);
    padding: 8px 0;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

nav ul li a:hover {
    color: var(--primary-color);
}

nav ul li a:hover::after {
    width: 100%;
}

/* 英雄区样式 */
.hero {
    background: var(--gradient-primary);
    color: var(--light-color);
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,%3Csvg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="none" fill-rule="evenodd"%3E%3Cg fill="%23ffffff" fill-opacity="0.1"%3E%3Cpath d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
    animation: float 20s ease-in-out infinite;
}

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

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 56px;
    margin-bottom: 25px;
    line-height: 1.2;
    font-weight: 800;
    animation: slideInUp 1s ease-out;
}

.hero p {
    font-size: 22px;
    margin-bottom: 50px;
    opacity: 0.95;
    animation: slideInUp 1s ease-out 0.2s both;
}

.btn {
    display: inline-block;
    padding: 18px 50px;
    background-color: var(--light-color);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 700;
    transition: var(--transition);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    animation: slideInUp 1s ease-out 0.4s both;
    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: var(--transition);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
}

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

/* 动画效果 */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

/* 特点区域样式 */
.features {
    padding: 100px 0;
    background-color: var(--light-color);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: -50px;
    left: 0;
    right: 0;
    height: 100px;
    background: var(--light-color);
    border-radius: 50% 50% 0 0;
}

.section-title {
    text-align: center;
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--dark-color);
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--gray-dark);
    margin-bottom: 80px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.feature-item {
    background: var(--light-color);
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.feature-item:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 36px;
    color: var(--light-color);
    transition: var(--transition);
    box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
}

.feature-item:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 30px rgba(255, 107, 53, 0.4);
}

.feature-item h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.feature-item p {
    color: var(--gray-dark);
    font-size: 16px;
    line-height: 1.7;
}

/* 关于我们样式 */
.about {
    padding: 100px 0;
    background-color: var(--gray-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--dark-color);
}

.about-text p {
    font-size: 17px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: var(--gray-dark);
}

.about-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.about-image:hover img {
    transform: scale(1.05);
}

/* 申请流程样式 */
.process {
    padding: 100px 0;
    background-color: var(--light-color);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 80px;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: translateY(-50%);
    z-index: 1;
}

.step {
    background: var(--light-color);
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--box-shadow);
    text-align: center;
    position: relative;
    z-index: 2;
    transition: var(--transition);
}

.step:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.step-number {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    color: var(--light-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: 800;
    margin: -65px auto 25px;
    box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
    transition: var(--transition);
}

.step:hover .step-number {
    transform: scale(1.1) rotate(10deg);
    box-shadow: 0 12px 30px rgba(255, 107, 53, 0.4);
}

.step h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.step p {
    color: var(--gray-dark);
    font-size: 16px;
    line-height: 1.7;
}

/* 常见问题样式 */
.faq {
    padding: 100px 0;
    background-color: var(--gray-light);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--light-color);
    margin-bottom: 20px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.faq-question {
    padding: 25px 30px;
    background: var(--light-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    font-size: 18px;
    color: var(--dark-color);
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.faq-question:hover {
    background-color: rgba(255, 107, 53, 0.05);
}

.faq-question i {
    font-size: 24px;
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 30px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s ease;
    background-color: var(--light-color);
}

.faq-item.active .faq-answer {
    padding: 0 30px 25px;
    max-height: 200px;
}

.faq-answer p {
    color: var(--gray-dark);
    font-size: 16px;
    line-height: 1.8;
}

/* 联系我们样式 */
.contact {
    padding: 100px 0;
    background-color: var(--light-color);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 80px;
}

.contact-item {
    background: var(--light-color);
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.contact-item i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 25px;
    transition: var(--transition);
}

.contact-item:hover i {
    transform: scale(1.1) rotate(5deg);
}

.contact-item h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.contact-item p {
    color: var(--gray-dark);
    font-size: 16px;
    line-height: 1.7;
}

/* 底部样式 */
footer {
    background: linear-gradient(135deg, var(--dark-color) 0%, #1a1a1a 100%);
    color: var(--light-color);
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 60px;
    margin-bottom: 50px;
}

.footer-section h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--light-color);
    position: relative;
    display: inline-block;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
}

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

.footer-section ul li {
    margin-bottom: 15px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-section ul li a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.footer-section ul li a i {
    color: var(--primary-color);
    font-size: 14px;
}

.copyright {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 40px;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 15px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero h1 {
        font-size: 42px;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .process-steps::before {
        display: none;
    }
}

@media (max-width: 768px) {
    nav ul {
        gap: 20px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .about-text h3 {
        font-size: 28px;
    }
}

@media (max-width: 576px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
        padding: 15px 0;
    }
    
    nav ul {
        gap: 15px;
    }
    
    nav ul li a {
        font-size: 14px;
    }
    
    .hero h1 {
        font-size: 28px;
    }
    
    .btn {
        padding: 15px 40px;
        font-size: 16px;
    }
}

/* 汉堡菜单样式 */
.menu-toggle {
    display: none;
    font-size: 24px;
    color: var(--primary-color);
    cursor: pointer;
    padding: 10px;
    transition: var(--transition);
}

.menu-toggle:hover {
    color: var(--secondary-color);
}

/* 移动端导航样式 */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--light-color);
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        z-index: 9999;
        padding: 80px 20px 20px;
        overflow-y: auto;
    }
    
    nav.active {
        right: 0;
    }
    
    nav ul {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul li a {
        display: block;
        padding: 12px 0;
        font-size: 18px;
    }
    
    .header-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    nav ul li a.btn {
        display: inline-block;
        margin-top: 10px;
    }
    
    /* 遮罩层 */
    .overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 9998;
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .overlay.active {
        opacity: 1;
        visibility: visible;
    }
}