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

:root {
    --primary-color: #ff69b4;
    --secondary-color: #ffb7d5;
    --accent-color: #ff1493;
    --dark-color: #2d1b2e;
    --light-color: #fff5f9;
    --text-color: #333;
    --text-light: #666;
    --border-color: #ffe0ed;
    --shadow: 0 4px 20px rgba(255, 105, 180, 0.15);
    --gradient: linear-gradient(135deg, #ff69b4 0%, #ff1493 100%);
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
    overflow-x: hidden;
}

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

/* 导航栏样式 */
.header {
    background: linear-gradient(135deg, #ff69b4 0%, #ff1493 100%);
    box-shadow: 0 2px 10px rgba(255, 105, 180, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 15px 0;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
    color: white;
}

.logo-icon {
    font-size: 32px;
    animation: float 3s ease-in-out infinite;
}

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

.brand-text {
    letter-spacing: 2px
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-menu li a {
    color: white;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 20px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu li a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: white;
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* 轮播背景样式 */
.hero-slider {
    position: relative;
    height: 600px;
    overflow: hidden;
}

.slider-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
}

.slider-item.active {
    opacity: 1;
}

.slider-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 105, 180, 0.7) 0%, rgba(255, 20, 147, 0.7) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: 40px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease 0.3s both;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    animation: fadeInUp 1s ease 0.6s both;
}

.btn {
    padding: 15px 40px;
    font-size: 18px;
    font-weight: bold;
    text-decoration: none;
    border-radius: 30px;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: white;
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

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

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

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

/* 通用区块样式 */
section {
    padding: 80px 0;
}

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

.section-header h2 {
    font-size: 36px;
    color: var(--dark-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-light);
    margin-top: 20px;
}

/* 特色介绍模块 */
.features-section {
    background: var(--light-color);
}

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

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 30px rgba(255, 105, 180, 0.25);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: inline-block;
    animation: bounce 2s ease infinite;
}

.feature-card:nth-child(2) .feature-icon {
    animation-delay: 0.2s;
}

.feature-card:nth-child(3) .feature-icon {
    animation-delay: 0.4s;
}

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

.feature-card h3 {
    font-size: 22px;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* 视频卡片模块 */
.video-section {
    background: white;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.video-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px rgba(255, 105, 180, 0.25);
}

.video-thumb {
    position: relative;
    overflow: hidden;
    padding-top: 140%;
}

.video-thumb img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.video-card:hover .video-thumb img {
    transform: scale(1.1);
}

.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.video-card:hover .play-overlay {
    opacity: 1;
}

.play-icon {
    font-size: 48px;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.video-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--gradient);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
    z-index: 10;
}

.video-info {
    padding: 20px;
}

.video-info h3 {
    font-size: 16px;
    color: var(--dark-color);
    margin-bottom: 10px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.video-meta {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 8px;
}

.video-desc {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* 文章资讯模块 */
.article-section {
    background: var(--light-color);
}

.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.article-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px rgba(255, 105, 180, 0.25);
}

.article-image {
    position: relative;
    overflow: hidden;
    height: 220px;
}

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

.article-card:hover .article-image img {
    transform: scale(1.1);
}

.article-content {
    padding: 25px;
}

.article-content h3 {
    font-size: 20px;
    color: var(--dark-color);
    margin-bottom: 15px;
    line-height: 1.4;
}

.article-meta {
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 15px;
}

.article-excerpt {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 15px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
}

.read-more {
    color: var(--primary-color);
    font-weight: bold;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.read-more:hover {
    color: var(--accent-color);
}

/* 分类导航模块 */
.category-section {
    background: white;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.category-card {
    position: relative;
    height: 200px;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow);
}

.category-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.category-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 105, 180, 0.8) 0%, rgba(255, 20, 147, 0.8) 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    transition: all 0.3s ease;
}

.category-card:hover img {
    transform: scale(1.2);
}

.category-card:hover .category-overlay {
    background: linear-gradient(135deg, rgba(255, 105, 180, 0.9) 0%, rgba(255, 20, 147, 0.9) 100%);
}

.category-overlay h3 {
    font-size: 24px;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.category-overlay p {
    font-size: 14px;
    margin-bottom: 10px;
}

.category-count {
    font-size: 13px;
    background: rgba(255, 255, 255, 0.3);
    padding: 5px 15px;
    border-radius: 20px;
}

/* 排行榜模块 */
.ranking-section {
    background: var(--light-color);
}

.ranking-container {
    background: white;
    border-radius: 15px;
    padding: 40px;
    box-shadow: var(--shadow);
}

.ranking-tabs {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
}

.ranking-tab {
    padding: 12px 30px;
    background: none;
    border: none;
    font-size: 16px;
    font-weight: bold;
    color: var(--text-light);
    cursor: pointer;
    position: relative;
    transition: color 0.3s ease;
}

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

.ranking-tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient);
    border-radius: 3px;
}

.ranking-list {
    display: none;
}

.ranking-list.active {
    display: block;
}

.ranking-item {
    display: flex;
    align-items: center;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 15px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.ranking-item:hover {
    background: var(--light-color);
    transform: translateX(10px);
}

.rank-number {
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    font-weight: bold;
    color: var(--text-light);
    margin-right: 20px;
}

.rank-number.top {
    background: var(--gradient);
    color: white;
    border-radius: 50%;
}

.rank-thumb {
    width: 80px;
    height: 110px;
    object-fit: cover;
    border-radius: 8px;
    margin-right: 20px;
}

.rank-info {
    flex: 1;
}

.rank-info h4 {
    font-size: 16px;
    color: var(--dark-color);
    margin-bottom: 8px;
}

.rank-info p {
    font-size: 13px;
    color: var(--text-light);
}

.rank-score {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    margin-left: 20px;
}

/* APP下载模块 */
.app-section {
    background: linear-gradient(135deg, #ff69b4 0%, #ff1493 100%);
    color: white;
}

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

.app-info h2 {
    font-size: 38px;
    margin-bottom: 15px;
}

.app-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.app-features {
    list-style: none;
    margin-bottom: 40px;
}

.app-features li {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
    align-items: flex-start;
}

.app-features .feature-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.app-features h4 {
    font-size: 18px;
    margin-bottom: 5px;
}

.app-features p {
    font-size: 14px;
    opacity: 0.9;
    line-height: 1.6;
}

.app-download-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 30px;
    background: white;
    color: var(--dark-color);
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.download-btn .btn-icon {
    font-size: 32px;
}

.download-btn small {
    display: block;
    font-size: 12px;
    color: var(--text-light);
}

.download-btn strong {
    display: block;
    font-size: 16px;
}

.app-qrcode {
    margin-top: 20px;
}

.qrcode-box {
    display: inline-block;
    background: white;
    padding: 20px;
    border-radius: 12px;
    text-align: center;
}

.qrcode-box img {
    width: 150px;
    height: 150px;
    border-radius: 8px;
}

.qrcode-box p {
    margin-top: 10px;
    color: var(--dark-color);
    font-size: 14px;
}

.app-preview {
    text-align: center;
}

.app-screen {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    animation: floatPhone 3s ease-in-out infinite;
}

@keyframes floatPhone {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* 用户评价模块 */
.testimonial-section {
    background: white;
}

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

.testimonial-card {
    background: var(--light-color);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(255, 105, 180, 0.25);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.user-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-color);
}

.user-info h4 {
    font-size: 16px;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.rating {
    font-size: 14px;
}

.testimonial-text {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
    font-style: italic;
}

/* 页脚样式 */
.footer {
    background: linear-gradient(135deg, #2d1b2e 0%, #1a0f1b 100%);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.footer-section p {
    font-size: 14px;
    line-height: 1.8;
    opacity: 0.8;
    margin-bottom: 20px;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    font-size: 20px;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: white;
    text-decoration: none;
    font-size: 14px;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--secondary-color);
    padding-left: 5px;
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    font-size: 14px;
    margin-bottom: 12px;
    opacity: 0.8;
}

.footer-links-section {
    margin-bottom: 30px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-links-section h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.friend-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.friend-links a {
    color: white;
    text-decoration: none;
    font-size: 14px;
    opacity: 0.8;
    transition: all 0.3s ease;
    padding: 5px 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
}

.friend-links a:hover {
    opacity: 1;
    background: rgba(255, 105, 180, 0.3);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
}

.footer-info p {
    font-size: 14px;
    opacity: 0.7;
    margin-bottom: 10px;
}

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

.footer-info a:hover {
    color: var(--secondary-color);
}

.divider {
    margin: 0 10px;
    opacity: 0.5;
}

.disclaimer {
    font-size: 12px;
    margin-top: 15px;
    opacity: 0.6;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 50px;
    height: 50px;
    background: var(--gradient);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(255, 105, 180, 0.4);
    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: 0 6px 20px rgba(255, 105, 180, 0.5);
}

/* 响应式设计 */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--primary-color);
        flex-direction: column;
        justify-content: flex-start;
        padding: 40px 0;
        transition: left 0.3s ease;
    }

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

    .nav-toggle {
        display: flex;
    }

    .hero-content h1 {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
    }

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

    .app-preview {
        order: -1;
    }

    .section-header h2 {
        font-size: 28px;
    }

    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 20px;
    }

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

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

@media (max-width: 576px) {
    .hero-slider {
        height: 400px;
    }

    .hero-content h1 {
        font-size: 24px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

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

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

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

    .ranking-container {
        padding: 20px;
    }

    .ranking-tabs {
        gap: 10px;
    }

    .ranking-tab {
        padding: 10px 15px;
        font-size: 14px;
    }

    .app-download-buttons {
        flex-direction: column;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}