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

:root {
    --primary-color: #00b894;
    --secondary-color: #00cec9;
    --dark-color: #2d3436;
    --light-color: #dfe6e9;
    --white: #ffffff;
    --text-color: #2d3436;
    --gradient-1: linear-gradient(135deg, #00b894 0%, #00cec9 100%);
    --gradient-2: linear-gradient(135deg, #00cec9 0%, #0984e3 100%);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.15);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    cursor: pointer;
}

.logo img {
    height: 45px;
    width: auto;
    margin-right: 12px;
    object-fit: contain;
}

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

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: all 0.3s ease;
}

/* 主页横幅 */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    color: var(--white);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,165.3C1248,171,1344,149,1392,138.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') bottom center no-repeat;
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

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

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

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 2rem;
    color: var(--white);
    opacity: 0.7;
}

/* 通用区块样式 */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.title-underline {
    width: 80px;
    height: 4px;
    background: var(--gradient-1);
    margin: 0 auto 1rem;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #636e72;
}

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

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    line-height: 1.8;
}

.about-text strong {
    color: var(--primary-color);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 10px;
    transition: all 0.3s ease;
}

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

.stat-item i {
    font-size: 2rem;
    color: var(--primary-color);
}

.stat-content h4 {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.stat-content p {
    font-size: 0.9rem;
    color: #636e72;
}

.about-image .image-placeholder {
    width: 100%;
    height: 400px;
    background: var(--gradient-1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.about-image .image-placeholder i {
    font-size: 8rem;
    color: var(--white);
    opacity: 0.8;
}

/* 产品服务 */
.products {
    background: #f8f9fa;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.product-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.product-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-icon i {
    font-size: 2.5rem;
    color: var(--white);
}

.product-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.product-specs {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.product-features {
    list-style: none;
    text-align: left;
}

.product-features li {
    padding: 0.5rem 0;
    color: #636e72;
}

.product-features i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

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

.service-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.service-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon i {
    font-size: 3rem;
    color: var(--white);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.service-card p {
    color: #636e72;
    line-height: 1.8;
}

/* 技术优势 */
.technology {
    background: var(--white);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.tech-card {
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 15px;
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
}

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

.tech-number {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary-color);
    opacity: 0.3;
    margin-bottom: 1rem;
}

.tech-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.tech-card p {
    color: #636e72;
    line-height: 1.8;
}

/* 服务覆盖 */
.coverage {
    background: #f8f9fa;
}

.coverage-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.coverage-map .map-placeholder {
    width: 100%;
    height: 400px;
    background: var(--gradient-2);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.coverage-map .map-placeholder i {
    font-size: 6rem;
    color: var(--white);
    opacity: 0.8;
    margin-bottom: 1rem;
}

.coverage-map .map-placeholder p {
    color: var(--white);
    font-size: 1.2rem;
}

.coverage-region {
    padding: 2rem;
    background: var(--white);
    border-radius: 15px;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.coverage-region:hover {
    transform: translateX(10px);
}

.coverage-region h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.coverage-region h3 i {
    margin-right: 0.5rem;
}

.coverage-region p {
    color: #636e72;
    line-height: 1.8;
}

/* APP下载 */
.download {
    background: var(--white);
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.download-info h3 {
    font-size: 2rem;
    color: var(--dark-color);
    margin-bottom: 2rem;
}

.app-features {
    list-style: none;
}

.app-features li {
    padding: 1rem;
    margin-bottom: 1rem;
    background: #f8f9fa;
    border-radius: 10px;
    font-size: 1.1rem;
    color: #636e72;
    transition: all 0.3s ease;
}

.app-features li:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateX(10px);
}

.app-features i {
    margin-right: 1rem;
    color: var(--primary-color);
}

.app-features li:hover i {
    color: var(--white);
}

.download-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.download-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.qr-code {
    width: 150px;
    height: 150px;
    margin: 0 auto 1.5rem;
    background: var(--white);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--primary-color);
}

.qr-code i {
    font-size: 4rem;
    color: var(--primary-color);
}

.download-card h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.btn-download {
    width: 100%;
    padding: 1rem;
    background: var(--gradient-1);
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.download-note {
    font-size: 0.9rem;
    color: #636e72;
    margin-top: 0.5rem;
}

/* APP介绍 */
.app-intro {
    background: #f8f9fa;
}

.app-description {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    margin-bottom: 3rem;
}

.app-description h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.app-description p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #636e72;
    margin-bottom: 1rem;
}

.app-description strong {
    color: var(--primary-color);
}

.app-features-detail {
    margin-bottom: 4rem;
}

.app-features-detail > h3 {
    font-size: 2rem;
    color: var(--dark-color);
    text-align: center;
    margin-bottom: 2rem;
}

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

.feature-item {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    text-align: center;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon i {
    font-size: 2.5rem;
    color: var(--white);
}

.feature-item h4 {
    font-size: 1.3rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.feature-item p {
    color: #636e72;
    line-height: 1.6;
}

.app-screenshots {
    margin-bottom: 4rem;
}

.app-screenshots > h3 {
    font-size: 2rem;
    color: var(--dark-color);
    text-align: center;
    margin-bottom: 2rem;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.screenshot-item {
    background: var(--white);
    padding: 1rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.screenshot-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-hover);
}

.screenshot-img {
    width: 100%;
    height: auto;
    aspect-ratio: 9/16;
    object-fit: cover;
    border-radius: 10px;
    display: block;
}

.screenshot-caption {
    margin-top: 0.8rem;
    text-align: center;
    font-size: 1rem;
    color: #636e72;
    font-weight: 500;
}

.app-process {
    background: var(--white);
    padding: 3rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    margin-bottom: 4rem;
}

.app-process > h3 {
    font-size: 2rem;
    color: var(--dark-color);
    text-align: center;
    margin-bottom: 2.5rem;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.step-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1.2rem;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.step-content p {
    color: #636e72;
    line-height: 1.6;
}

.app-faq {
    margin-bottom: 3rem;
}

.app-faq > h3 {
    font-size: 2rem;
    color: var(--dark-color);
    text-align: center;
    margin-bottom: 2rem;
}

.faq-list {
    display: grid;
    gap: 1.5rem;
}

.faq-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.faq-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-hover);
}

.faq-item h4 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
}

.faq-item p {
    color: #636e72;
    line-height: 1.6;
}

.app-intro-text {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

/* 联系我们 */
.contact {
    background: #f8f9fa;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.contact-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.contact-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.contact-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.contact-card p {
    color: #636e72;
    font-size: 1.1rem;
}

/* 页脚 */
.footer {
    background: var(--dark-color);
    color: var(--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 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-section h3 i {
    color: var(--primary-color);
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--light-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-section ul li i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    margin-bottom: 0.5rem;
    color: var(--light-color);
}

.footer-bottom a {
    color: var(--light-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

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

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

/* 响应式设计 */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

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

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

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

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .about-content,
    .coverage-content,
    .download-content {
        grid-template-columns: 1fr;
    }

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

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

    .download-buttons {
        grid-template-columns: 1fr;
    }

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

    .screenshots-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

    .logo img {
        height: 38px;
    }

    .logo span {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .logo img {
        height: 32px;
    }

    .logo span {
        font-size: 1.1rem;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
    }

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

    section {
        padding: 3rem 0;
    }

    .app-description,
    .app-process {
        padding: 1.5rem;
    }

    .screenshots-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .process-steps {
        grid-template-columns: 1fr;
    }
}