/* 产品落地页样式 */

/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

/* 覆盖激活状态的黄色左边框装饰 */
.nav-link:hover {
    background-color: transparent !important;
    border-left-color: transparent !important;
}

.nav-item.active .nav-link {
    background-color: transparent !important;
    border-left-color: transparent !important;
}

/* 政策页面样式 */
.main-content {
    padding: 120px 0 80px;
    min-height: 100vh;
    background: #f8f9fa;
}

.policy-header {
    text-align: center;
    margin-bottom: 60px;
}

.policy-header h1 {
    font-size: 3rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
}

.last-updated {
    font-size: 1.1rem;
    color: #666;
    font-style: italic;
}

.policy-content {
    max-width: 100%;
    margin: 0 auto;
    background: white;
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.policy-section {
    margin-bottom: 40px;
}

.policy-section h2 {
    font-size: 1.8rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #9333ea;
}

.policy-section h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #555;
    margin: 25px 0 15px 0;
}

.policy-section p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 15px;
}

.policy-section ul {
    margin: 15px 0;
    padding-left: 20px;
}

.policy-section li {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 10px;
}

.policy-section li strong {
    color: #333;
    font-weight: 600;
}

.policy-section a {
    color: #9333ea;
    text-decoration: none;
    font-weight: 500;
}

.policy-section a:hover {
    text-decoration: underline;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    color: #9333ea;
}

.nav-logo i {
    margin-right: 8px;
    font-size: 28px;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    font-size: 16px;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #9333ea;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #9333ea;
    transition: width 0.3s ease;
}

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

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

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主横幅区域 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 20px;
    line-height: 1.2;
}

.highlight {
    color: #FFFF80;
    text-shadow: 0 0 20px rgba(255, 255, 128, 0.5);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 20px;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 40px;
    opacity: 0.8;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: #FFFF80;
    color: #333;
    box-shadow: 0 4px 15px rgba(255, 255, 128, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 255, 128, 0.4);
}

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

.btn-secondary:hover {
    background: white;
    color: #333;
}

/* 手机模拟器 */
.hero-image {
    display: flex;
    justify-content: center;
    animation: fadeInRight 1s ease;
}

.phone-mockup {
    width: 320px !important;
    height: 640px !important;
    background: #1a1a1a;
    border-radius: 45px;
    padding: 22px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    position: relative;
    transition: transform 0.3s ease;
    border: 3px solid #9333ea !important;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 35px;
    overflow: hidden;
    position: relative;
}

.app-interface {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 30px;
}

/* 功能特色区域 */
.features {
    padding: 100px 0;
    background: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 20px;
    color: #333;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #9333ea, #667eea);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 30px;
    color: white;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 15px;
    color: #333;
}

.feature-description {
    color: #666;
    line-height: 1.6;
}

/* 下载区域 */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.download .section-title,
.download .section-subtitle {
    color: white;
}

.download-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    text-align: center;
}

.download-info h3 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.download-info p {
    font-size: 1.1rem;
    margin-bottom: 0;
    opacity: 0.9;
}

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

.download-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.download-features i {
    color: #FFFF80;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
    max-width: 900px;
}

.download-btn-group {
    display: flex;
    flex-direction: row;
    gap: 40px;
    justify-content: center;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 30px 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    text-decoration: none;
    color: white;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    flex: 1;
    max-width: 420px;
    min-width: 350px;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.download-btn.ios-btn {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.download-btn.ios-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: none;
}

.btn-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.btn-content {
    display: flex;
    flex-direction: column;
}

.btn-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 5px;
}

.btn-subtitle {
    font-size: 0.9rem;
    opacity: 0.8;
}

.qr-code {
    text-align: center;
    margin-top: 10px;
}

.qr-code-container {
    width: 300px;
    height: 300px;
    background: white;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
}

.qr-placeholder {
    text-align: center;
    color: #666;
}

.qr-placeholder i {
    font-size: 40px;
    margin-bottom: 10px;
    display: block;
}

.qr-code-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 15px;
}

.qr-text {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 用户评价区域 */
.testimonials {
    padding: 100px 0;
    background: white;
}

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

.testimonial-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.testimonial-content {
    margin-bottom: 20px;
}

.testimonial-content p {
    font-style: italic;
    color: #666;
    line-height: 1.6;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: #9333ea;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.author-info h4 {
    font-weight: bold;
    margin-bottom: 5px;
}

.author-info span {
    color: #666;
    font-size: 0.9rem;
}

/* 联系我们区域 */
.contact {
    padding: 100px 0;
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: #9333ea;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.contact-item h4 {
    font-weight: bold;
    margin-bottom: 5px;
}

.contact-item p {
    color: #666;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #9333ea;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .btn-primary {
    background: #9333ea;
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: block;
    margin: 0 auto;
}

.contact-form .btn-primary:hover {
    background: #7c2dd9;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(147, 51, 234, 0.3);
}

/* 页脚 */
.footer {
    background: #333;
    color: white;
    padding: 40px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
}

.footer-logo i {
    margin-right: 8px;
    color: #9333ea;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #9333ea;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #555;
    color: #999;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: #9333ea;
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top:hover {
    background: #7c2dd9;
    transform: translateY(-2px);
}

.back-to-top.show {
    display: flex;
}

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

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

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        justify-content: start;
        align-items: center;
        padding-top: 50px;
        transition: left 0.3s ease;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }

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

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

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

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

    .phone-mockup {
        width: 280px !important;
        height: 560px !important;
    }

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

    .download-content {
        gap: 30px;
    }

    .download-btn-group {
        flex-direction: column;
        gap: 15px;
    }

    .download-btn {
        max-width: 100%;
        min-width: auto;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    /* 政策页面平板端样式 */
    .policy-content {
        padding: 40px 30px;
        margin: 0 auto;
        max-width: 90%;
    }

    .policy-header h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 1.6rem !important;
    }

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

    .hero-description {
        font-size: 0.95rem !important;
        margin-bottom: 30px;
    }

    .btn {
        font-size: 0.9rem !important;
        padding: 12px 24px;
    }

    .section-title {
        font-size: 1.6rem !important;
    }

    .section-subtitle {
        font-size: 1rem !important;
        margin-bottom: 40px;
    }

    .feature-card {
        padding: 25px 15px;
    }

    .feature-title {
        font-size: 1.2rem !important;
        margin-bottom: 12px;
    }

    .feature-description {
        font-size: 0.9rem !important;
    }

    .download-info h3 {
        font-size: 1.4rem !important;
        margin-bottom: 15px;
    }

    .download-info p {
        font-size: 0.95rem !important;
    }

    .nav-logo {
        font-size: 20px;
    }

    .nav-logo i {
        font-size: 24px;
    }

    .nav-link {
        font-size: 14px;
    }

    .testimonial-content p {
        font-size: 0.9rem;
    }

    .author-info h4 {
        font-size: 0.95rem;
    }

    .author-info span {
        font-size: 0.85rem;
    }

    .contact-item h4 {
        font-size: 0.95rem;
    }

    .contact-item p {
        font-size: 0.9rem;
    }

    .contact-form {
        padding: 30px 20px;
    }

    .contact-form input,
    .contact-form textarea {
        font-size: 0.9rem;
    }

    .footer-logo {
        font-size: 20px;
    }

    .footer-links {
        font-size: 0.9rem;
    }

    .footer-bottom {
        font-size: 0.85rem;
    }

    /* 政策页面移动端样式 */
    .main-content {
        padding: 80px 0 40px;
    }

    .policy-content {
        padding: 20px 15px;
        margin: 0 auto;
        max-width: 95%;
        border-radius: 15px;
    }

    .policy-header {
        margin-bottom: 30px;
    }

    .policy-header h1 {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }

    .last-updated {
        font-size: 0.9rem;
    }

    .policy-section {
        margin-bottom: 25px;
    }

    .policy-section h2 {
        font-size: 1.3rem;
        margin-bottom: 15px;
        padding-bottom: 8px;
    }

    .policy-section h3 {
        font-size: 1.1rem;
        margin: 20px 0 10px 0;
    }

    .policy-section p,
    .policy-section li {
        font-size: 0.9rem;
        line-height: 1.6;
        margin-bottom: 8px;
    }

    .policy-section ul {
        margin: 10px 0;
        padding-left: 15px;
    }
}