/* 
 * 影视天堂 - 主样式表
 * 版本: 1.0.0
 * 优化: 移动端优先，响应式设计
 */

/* CSS变量定义 */
:root {
    --primary-color: #ff416c;
    --primary-dark: #ff4b2b;
    --secondary-color: #6c5ce7;
    --bg-dark: #0f0f17;
    --bg-card: #1a1a2e;
    --bg-card-hover: #252542;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6c6c7c;
    --border-color: #2a2a3e;
    --success-color: #00d68f;
    --warning-color: #ffaa00;
    --danger-color: #ff3d71;
    --font-main: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
}

/* 重置样式 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}

/* 图片响应式 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 链接样式 */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* 容器 */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
}

@media (min-width: 768px) {
    .container {
        padding: 0 24px;
    }
}

@media (min-width: 1200px) {
    .container {
        padding: 0 32px;
    }
}

/* 头部导航 */
.site-header {
    background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(15, 15, 23, 0.95) 100%);
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-logo img {
    height: 40px;
    width: auto;
}

.site-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

@media (min-width: 992px) {
    .mobile-menu-btn {
        display: none;
    }
}

/* 主导航 */
.main-nav {
    display: none;
    width: 100%;
    padding-top: 16px;
}

.main-nav.active {
    display: block;
}

@media (min-width: 992px) {
    .main-nav {
        display: flex;
        width: auto;
        padding-top: 0;
    }
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

@media (min-width: 992px) {
    .nav-list {
        flex-direction: row;
        gap: 24px;
    }
}

.nav-list a {
    display: block;
    padding: 10px 16px;
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--text-primary);
    background: var(--bg-card);
}

/* CTA按钮 */
.cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--text-primary);
}

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

.cta-btn-secondary:hover {
    background: var(--primary-color);
}

/* Hero区域 */
.hero-section {
    position: relative;
    padding: 60px 0 80px;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-card) 50%, var(--bg-dark) 100%);
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-main.webp') center/cover no-repeat;
    opacity: 0.15;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
}

@media (min-width: 1200px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 16px 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    font-size: 0.9rem;
}

.breadcrumb-list li::after {
    content: '/';
    margin-left: 8px;
    color: var(--text-muted);
}

.breadcrumb-list li:last-child::after {
    display: none;
}

.breadcrumb-list a {
    color: var(--text-secondary);
}

.breadcrumb-list a:hover {
    color: var(--primary-color);
}

.breadcrumb-list .current {
    color: var(--text-primary);
}

/* 章节标题 */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.25rem;
    }
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 内容区块 */
.content-section {
    padding: 60px 0;
}

.content-section:nth-child(even) {
    background: var(--bg-card);
}

/* 视频卡片网格 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 20px;
}

@media (min-width: 576px) {
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1200px) {
    .video-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.video-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
}

.video-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.video-card-thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.video-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.video-card:hover .video-card-thumb img {
    transform: scale(1.08);
}

.video-card-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background: rgba(255, 65, 108, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-fast);
}

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

.video-card-play::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 16px solid white;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    margin-left: 4px;
}

.video-card-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.8);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.video-card-info {
    padding: 16px;
}

.video-card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.video-card-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--warning-color);
}

/* 标签云 */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.tag-item {
    display: inline-block;
    padding: 8px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.tag-item:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-primary);
}

/* 关于我们 */
.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
}

@media (min-width: 992px) {
    .about-content {
        grid-template-columns: 1fr 1fr;
    }
}

.about-text {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.9;
}

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

.about-image {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* 支付方式 */
.payment-section {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-dark) 100%);
}

.payment-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

@media (min-width: 576px) {
    .payment-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 992px) {
    .payment-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.payment-item {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--border-radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.payment-item:hover {
    border-color: var(--primary-color);
}

.payment-item img {
    height: 40px;
    margin: 0 auto 12px;
}

.payment-item-name {
    font-weight: 500;
    color: var(--text-secondary);
}

.payment-highlight {
    border-color: var(--success-color);
    background: rgba(0, 214, 143, 0.1);
}

.payment-highlight .payment-item-name {
    color: var(--success-color);
}

/* FAQ手风琴 */
.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border-radius: var(--border-radius-md);
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    background: transparent;
    border: none;
    text-align: left;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    transition: var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 300;
    transition: var(--transition-fast);
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-inner {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 用户评论 */
.reviews-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1200px) {
    .reviews-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.review-card {
    background: var(--bg-card);
    padding: 28px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.review-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.review-author {
    flex: 1;
}

.review-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.review-location {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.review-rating {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
}

.review-star {
    color: var(--warning-color);
    font-size: 1.1rem;
}

.review-content {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.review-date {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* 作者信息 */
.author-box {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    padding: 32px;
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    margin: 40px 0;
}

.author-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.author-info {
    flex: 1;
    min-width: 250px;
}

.author-name {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.author-title {
    color: var(--primary-color);
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.author-bio {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 页脚 */
.site-footer {
    background: var(--bg-card);
    padding: 60px 0 0;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    margin-bottom: 48px;
}

@media (min-width: 576px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .site-logo {
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

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

.footer-links a {
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 4px;
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.footer-social a {
    width: 44px;
    height: 44px;
    background: var(--bg-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary-color);
    color: var(--text-primary);
}

.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 20px;
}

.footer-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    align-items: center;
}

.footer-badge {
    height: 36px;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-legal-links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

.footer-legal-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* 18+警告 */
.age-warning {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--danger-color);
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
}

/* 视频播放器模块 */
.video-player-section {
    background: var(--bg-dark);
    padding: 40px 0;
}

.video-player-wrapper {
    position: relative;
    aspect-ratio: 16/9;
    max-width: 1000px;
    margin: 0 auto;
    background: #000;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.video-player-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-player-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.video-play-btn {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: 0 0 30px rgba(255, 65, 108, 0.5);
}

.video-play-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 0 50px rgba(255, 65, 108, 0.7);
}

.video-play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 24px solid white;
    border-top: 14px solid transparent;
    border-bottom: 14px solid transparent;
    margin-left: 6px;
}

.video-title-overlay {
    font-size: 1.25rem;
    font-weight: 600;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

/* APP下载页面 */
.app-hero {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--secondary-color) 100%);
    text-align: center;
}

.app-mockup {
    max-width: 300px;
    margin: 0 auto 40px;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.5));
}

.app-download-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

.app-download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 28px;
    background: var(--bg-card);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.app-download-btn:hover {
    border-color: var(--primary-color);
    background: var(--bg-card-hover);
}

.app-download-btn-icon {
    font-size: 2rem;
}

.app-download-btn-text {
    text-align: left;
}

.app-download-btn-small {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.app-download-btn-large {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* 特色功能 */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1200px) {
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.feature-card {
    background: var(--bg-card);
    padding: 32px 24px;
    border-radius: var(--border-radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
}

.feature-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* 内容文章 */
.article-content {
    max-width: 900px;
    margin: 0 auto;
}

.article-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 40px 0 20px;
    color: var(--text-primary);
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-color);
}

.article-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 32px 0 16px;
    color: var(--text-primary);
}

.article-content p {
    margin-bottom: 20px;
    color: var(--text-secondary);
    line-height: 1.9;
}

.article-content ul,
.article-content ol {
    margin: 20px 0;
    padding-left: 24px;
    color: var(--text-secondary);
}

.article-content li {
    margin-bottom: 12px;
    line-height: 1.7;
}

.article-content img {
    border-radius: var(--border-radius-md);
    margin: 24px 0;
    box-shadow: var(--shadow-md);
}

/* 信息卡片 */
.info-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--border-radius-md);
    border-left: 4px solid var(--primary-color);
    margin: 24px 0;
}

.info-card-title {
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.info-card-content {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 表格样式 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    background: var(--bg-card);
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

.data-table th,
.data-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--bg-dark);
    font-weight: 600;
    color: var(--text-primary);
}

.data-table td {
    color: var(--text-secondary);
}

.data-table tr:hover td {
    background: var(--bg-card-hover);
}

/* 响应式表格 */
@media (max-width: 768px) {
    .data-table {
        display: block;
        overflow-x: auto;
    }
}

/* 客服支持 */
.support-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 768px) {
    .support-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.support-card {
    background: var(--bg-card);
    padding: 32px;
    border-radius: var(--border-radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
}

.support-card:hover {
    border-color: var(--success-color);
}

.support-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: var(--success-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.support-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.support-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* 许可证徽章 */
.license-section {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    text-align: center;
    margin: 40px 0;
}

.license-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
    margin-top: 24px;
}

.license-badge {
    background: var(--bg-dark);
    padding: 16px 24px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}

.license-badge img {
    height: 48px;
}

/* 工具类 */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.mt-40 {
    margin-top: 40px;
}

.mb-40 {
    margin-bottom: 40px;
}

.hidden {
    display: none;
}

@media (max-width: 767px) {
    .hidden-mobile {
        display: none;
    }
}

@media (min-width: 768px) {
    .hidden-desktop {
        display: none;
    }
}

/* 动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* 预加载优化 */
.preload-hidden {
    visibility: hidden;
}