/* 全局样式 */
:root {
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --primary-light: #e1f0fa;
    --secondary-color: #2c3e50;
    --accent-color: #f39c12;
    --text-color: #333333;
    --text-light: #7f8c8d;
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --gray: #ecf0f1;
    --border-color: #e0e0e0;
    --success-color: #2ecc71;
    --danger-color: #e74c3c;
    --warning-color: #f1c40f;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 15px;
}

p {
    margin-bottom: 15px;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

section {
    padding: 80px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    background-color: var(--primary-light);
    color: var(--primary-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

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

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--box-shadow);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--box-shadow);
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    padding: 15px 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 10px 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo span {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-menu li {
    margin-left: 25px;
}

.nav-menu li a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: var(--primary-color);
}

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

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

.btn-contact {
    background-color: var(--primary-light);
    color: var(--primary-color);
    padding: 8px 20px;
    border-radius: 20px;
}

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

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

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 2px 0;
    transition: var(--transition);
}

/* 首页横幅样式 */
.hero {
    padding-top: 150px;
    padding-bottom: 100px;
    background: linear-gradient(135deg, #e1f0fa 0%, #d4e6f9 100%);
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 2;
}

.hero-content {
    flex: 1;
    max-width: 550px;
}

.hero-content h1 {
    font-size: 3.5rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content h1 span {
    color: var(--primary-color);
    position: relative;
    z-index: 1;
}

.hero-content h1 span::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 10px;
    background-color: rgba(52, 152, 219, 0.2);
    bottom: 5px;
    left: 0;
    z-index: -1;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    gap: 30px;
}

.stat-item h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-item p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
}

.hero-image {
    flex: 1;
    position: relative;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    animation: float 3s ease-in-out infinite;
}

.floating-card {
    position: absolute;
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: var(--box-shadow);
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: float 3s ease-in-out infinite;
}

.floating-card i {
    font-size: 1.5rem;
}

.card-1 {
    top: 20%;
    left: 0;
    color: #09BB07;
    animation-delay: 0.5s;
}

.card-2 {
    bottom: 20%;
    right: 0;
    color: #1677FF;
    animation-delay: 1s;
}

.card-3 {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--primary-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    justify-content: center;
    animation-delay: 1.5s;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0px);
    }
}

.wave-divider {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    line-height: 0;
}

.wave-divider svg {
    width: 100%;
    height: 100px;
}

/* 产品特点样式 */
.features {
    background-color: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--white);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow);
}

.feature-icon {
    margin-bottom: 20px;
}

.feature-icon img {
    width: 80px;
    height: 80px;
}

.feature-card h3 {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
}

/* 服务介绍样式 */
.services {
    background-color: var(--light-gray);
}

.services-container {
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.service-tab-nav {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: 20px;
    text-align: center;
    background-color: transparent;
    border: none;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-color);
    transition: var(--transition);
    position: relative;
}

.tab-btn.active {
    color: var(--primary-color);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
    bottom: 0;
    left: 0;
}

.tab-pane {
    display: none;
    padding: 40px;
}

.tab-pane.active {
    display: block;
}

.tab-content-inner {
    display: flex;
    align-items: center;
    gap: 40px;
}

.tab-image {
    flex: 1;
    text-align: center;
}

.tab-image img {
    max-width: 300px;
}

.tab-text {
    flex: 1;
}

.tab-text h3 {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.tab-text p {
    margin-bottom: 20px;
}

.service-features {
    margin-bottom: 30px;
}

.service-features li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.service-features li i {
    color: var(--success-color);
    margin-right: 10px;
}

/* 兑换流程样式 */
.process {
    background-color: var(--white);
}

.process-timeline {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-bottom: 50px;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--primary-light);
    z-index: 1;
}

.timeline-item {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 0 15px;
}

.timeline-number {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto 20px;
}

.timeline-icon {
    background-color: var(--white);
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: var(--box-shadow);
}

.timeline-icon img {
    width: 60px;
    height: 60px;
}

.timeline-content h3 {
    font-size: 1.3rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.timeline-content p {
    color: var(--text-light);
}

.process-cta {
    text-align: center;
}

.process-cta p {
    font-size: 1.1rem;
}

.process-cta a {
    font-weight: 600;
}

/* 用户评价样式 */
.testimonials {
    background-color: var(--light-gray);
}

.testimonial-slider {
    position: relative;
    overflow: hidden;
}

.testimonial-track {
    display: flex;
    transition: transform 0.5s ease;
}

.testimonial-card {
    flex: 0 0 100%;
    background-color: var(--white);
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--box-shadow);
    position: relative;
}

.testimonial-quote {
    position: absolute;
    top: 20px;
    left: 20px;
    color: var(--primary-light);
    font-size: 2rem;
}

.testimonial-text {
    margin: 30px 0;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-right: 15px;
}

.testimonial-author h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.testimonial-author p {
    color: var(--text-light);
    margin: 0;
}

.testimonial-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 30px;
}

.nav-prev,
.nav-next {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--white);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.nav-prev:hover,
.nav-next:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.testimonial-dots {
    display: flex;
    margin: 0 20px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--border-color);
    margin: 0 5px;
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background-color: var(--primary-color);
}

/* 关于我们样式 */
.about {
    background-color: var(--white);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-image {
    flex: 1;
}

.about-image img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: var(--box-shadow);
}

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 20px;
}

.about-stats {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

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

.about-stat h4 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.about-stat p {
    color: var(--text-light);
    margin: 0;
}

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

.contact-container {
    display: flex;
    gap: 30px;
}

.contact-info {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.contact-card {
    background-color: var(--white);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

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

.contact-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-light);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-size: 1.5rem;
}

.contact-card h3 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.contact-card p {
    color: var(--text-light);
    margin: 0;
}

.contact-form-container {
    flex: 1;
    background-color: var(--white);
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--box-shadow);
}

.contact-form h3 {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
    text-align: center;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

/* 页脚样式 */
.footer {
    background-color: var(--secondary-color);
    color: var(--white);
}

.footer-top {
    padding: 60px 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: 30px;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.footer-logo img {
    height: 40px;
    margin-right: 10px;
}

.footer-logo span {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--white);
}

.footer-info p {
    color: #a0aec0;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-links h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h3::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
    bottom: 0;
    left: 0;
}

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

.footer-links ul li a {
    color: #a0aec0;
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-qrcode {
    display: flex;
    justify-content: space-around;
}

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

.qrcode-item img {
    width: 100px;
    height: 100px;
    background-color: var(--white);
    padding: 5px;
    border-radius: 5px;
    margin-bottom: 10px;
}

.qrcode-item p {
    color: #a0aec0;
}

.footer-bottom {
    background-color: rgba(0, 0, 0, 0.2);
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    color: #a0aec0;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
    }

    .hero-content {
        max-width: 100%;
        text-align: center;
        margin-bottom: 50px;
    }

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

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

    .process-timeline {
        flex-direction: column;
    }

    .process-timeline::before {
        display: none;
    }

    .timeline-item {
        margin-bottom: 30px;
    }

    .about-content {
        flex-direction: column;
    }

    .contact-container {
        flex-direction: column;
    }

    .tab-content-inner {
        flex-direction: column;
    }

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

@media (max-width: 768px) {
    .section-header h2 {
        font-size: 2rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        flex-direction: column;
        padding: 20px 0;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-menu li {
        margin: 10px 0;
    }

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

    .service-tab-nav {
        flex-direction: column;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

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