/* 
 * 视频创作网站样式表
 * 移动端优先设计 - 2026年SEO优化
 */

/* CSS变量定义 */
:root {
    --primary-color: #7c3aed;
    --primary-dark: #5b21b6;
    --primary-light: #a78bfa;
    --secondary-color: #ec4899;
    --accent-color: #f59e0b;
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    line-height: 1.75;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
    list-style: none;
}

/* 容器 */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 768px) {
    .container {
        padding: 0 2rem;
    }
}

/* 头部导航 */
.site-header {
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1e1b4b 100%);
    padding: 1rem 0;
    position: relative;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo-wrap {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-wrap img {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
}

.logo-text {
    color: #fff;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: var(--transition-fast);
}

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

/* 导航菜单 */
.main-nav {
    width: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.main-nav.active {
    max-height: 500px;
}

@media (min-width: 992px) {
    .main-nav {
        width: auto;
        max-height: none;
        overflow: visible;
    }
}

.nav-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem 0;
}

@media (min-width: 992px) {
    .nav-list {
        flex-direction: row;
        gap: 0.25rem;
        padding: 0;
    }
}

.nav-list a {
    display: block;
    padding: 0.75rem 1rem;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-list a:hover,
.nav-list a.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

/* CTA按钮 */
.btn-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    color: #fff !important;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-xl);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Hero区域 */
.hero-section {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1e1b4b 50%, #312e81 100%);
    overflow: hidden;
}

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

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 3rem 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-2xl);
    color: var(--primary-light);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.025em;
}

.hero-title span {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto 2rem;
}

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

.hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
    .hero-stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 0.5rem;
}

/* 章节通用样式 */
.section {
    padding: 4rem 0;
}

@media (min-width: 768px) {
    .section {
        padding: 6rem 0;
    }
}

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

.section-tag {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-2xl);
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 1rem;
}

.section-desc {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* 服务模块 */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.service-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2rem;
    transition: all var(--transition-normal);
}

.service-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: var(--radius-lg);
    margin-bottom: 1.25rem;
}

.service-icon svg {
    width: 28px;
    height: 28px;
    color: #fff;
}

.service-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.service-text {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 视频卡片 */
.video-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.video-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.video-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-6px);
}

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

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

.video-card:hover .video-thumb img {
    transform: scale(1.05);
}

.video-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
}

.video-play::after {
    content: '';
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 0 10px 18px;
    border-color: transparent transparent transparent var(--primary-color);
    margin-left: 4px;
}

.video-card:hover .video-play {
    transform: translate(-50%, -50%) scale(1.1);
    background: var(--primary-color);
}

.video-card:hover .video-play::after {
    border-color: transparent transparent transparent #fff;
}

.video-rating {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.375rem 0.75rem;
    background: rgba(0, 0, 0, 0.7);
    border-radius: var(--radius-2xl);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    backdrop-filter: blur(4px);
}

.video-rating svg {
    width: 14px;
    height: 14px;
    color: var(--accent-color);
}

.video-info {
    padding: 1.25rem;
}

.video-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(124, 58, 237, 0.1);
    color: var(--primary-color);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    margin-bottom: 0.75rem;
}

.video-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.8125rem;
    color: var(--text-light);
}

/* 优势模块 */
.advantages-section {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

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

@media (min-width: 1024px) {
    .advantages-wrap {
        grid-template-columns: 1fr 1fr;
    }
}

.advantages-media {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.advantages-media img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
}

.advantages-content {
    padding: 1rem 0;
}

.advantage-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.advantage-item {
    display: flex;
    gap: 1rem;
}

.advantage-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: var(--radius-lg);
}

.advantage-icon svg {
    width: 24px;
    height: 24px;
    color: #fff;
}

.advantage-text h4 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.advantage-text p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* 招聘模块 */
.recruitment-section {
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1e1b4b 100%);
    color: #fff;
}

.recruitment-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.recruitment-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.recruitment-desc {
    font-size: 1.0625rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
}

.recruitment-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2.5rem;
}

@media (min-width: 768px) {
    .recruitment-features {
        grid-template-columns: repeat(4, 1fr);
    }
}

.recruit-feature {
    padding: 1.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
}

.recruit-feature h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.recruit-feature p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

/* 用户评价 */
.reviews-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .reviews-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.review-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 1.75rem;
    transition: all var(--transition-normal);
}

.review-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.review-avatar {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.25rem;
    font-weight: 600;
}

.review-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.review-info p {
    font-size: 0.8125rem;
    color: var(--text-light);
}

.review-stars {
    display: flex;
    gap: 0.125rem;
    margin-bottom: 1rem;
}

.review-stars svg {
    width: 18px;
    height: 18px;
    color: var(--accent-color);
}

.review-text {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.review-date {
    font-size: 0.8125rem;
    color: var(--text-light);
    margin-top: 1rem;
}

/* FAQ模块 */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
}

.faq-question h3 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-primary);
    padding-right: 2rem;
}

.faq-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: 50%;
    transition: all var(--transition-normal);
}

.faq-icon svg {
    width: 16px;
    height: 16px;
    color: var(--text-secondary);
    transition: transform var(--transition-normal);
}

.faq-item.active .faq-icon {
    background: var(--primary-color);
}

.faq-item.active .faq-icon svg {
    color: #fff;
    transform: rotate(180deg);
}

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

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

.faq-answer p {
    padding-bottom: 1.5rem;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 支付方式 */
.payment-section {
    background: var(--bg-secondary);
}

.payment-methods {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
}

.payment-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem 2rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
}

.payment-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
}

.payment-item img {
    height: 40px;
    width: auto;
}

.payment-item span {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.payment-highlight {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
}

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

@media (min-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr 1fr;
    }
}

.about-text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.9;
}

.about-text p {
    margin-bottom: 1.5rem;
}

.about-image {
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-image img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

/* 作者信息 */
.author-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    margin-top: 2rem;
}

@media (min-width: 640px) {
    .author-box {
        flex-direction: row;
        text-align: left;
    }
}

.author-avatar {
    flex-shrink: 0;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--primary-color);
}

.author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.author-info .title {
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.author-info p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* 客户支持 */
.support-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .support-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .support-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.support-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
}

.support-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
}

.support-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: var(--radius-xl);
    margin-bottom: 1.25rem;
}

.support-icon svg {
    width: 32px;
    height: 32px;
    color: #fff;
}

.support-item h4 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.support-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* 页脚 */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-bottom: 3rem;
}

@media (min-width: 640px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand {
    max-width: 320px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.footer-logo img {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
}

.footer-logo span {
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
}

.footer-brand p {
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: #fff;
    transition: all var(--transition-fast);
}

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

.footer-nav h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 1.25rem;
}

.footer-nav ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-nav a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: #fff;
}

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

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-payments {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-payments img {
    height: 28px;
    width: auto;
    opacity: 0.8;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 1rem 0;
    background: var(--bg-secondary);
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.breadcrumb-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

.breadcrumb-list .current {
    color: var(--text-primary);
    font-weight: 500;
}

.breadcrumb-list .separator {
    color: var(--text-light);
}

/* 内页样式 */
.page-header {
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1e1b4b 100%);
    padding: 4rem 0;
    text-align: center;
}

.page-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: #fff;
    margin-bottom: 1rem;
}

.page-desc {
    font-size: 1.0625rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto;
}

.page-content {
    padding: 3rem 0;
}

.content-wrap {
    max-width: 900px;
    margin: 0 auto;
}

.content-wrap h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 2.5rem 0 1rem;
}

.content-wrap h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 2rem 0 0.75rem;
}

.content-wrap p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 1.25rem;
}

.content-wrap ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.content-wrap li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.content-wrap li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
}

.content-image {
    margin: 2rem 0;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.content-image img {
    width: 100%;
    height: auto;
}

/* 视频播放模块 */
.video-player-wrap {
    position: relative;
    aspect-ratio: 16/9;
    background: #000;
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin: 2rem 0;
}

.video-player-wrap video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.video-poster {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-normal);
}

.video-play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 14px 0 14px 24px;
    border-color: transparent transparent transparent var(--primary-color);
    margin-left: 6px;
}

.video-play-btn:hover {
    transform: translate(-50%, -50%) scale(1.1);
    background: var(--primary-color);
}

.video-play-btn:hover::after {
    border-color: transparent transparent transparent #fff;
}

/* APP下载页面 */
.download-hero {
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1e1b4b 50%, var(--primary-dark) 100%);
    padding: 5rem 0;
    text-align: center;
}

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

@media (min-width: 1024px) {
    .download-content {
        grid-template-columns: 1fr 1fr;
        text-align: left;
    }
}

.download-info h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: #fff;
    margin-bottom: 1.5rem;
}

.download-info p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
}

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

@media (min-width: 1024px) {
    .download-buttons {
        justify-content: flex-start;
    }
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    color: #fff;
    transition: all var(--transition-normal);
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    color: #fff;
}

.download-btn svg {
    width: 32px;
    height: 32px;
}

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

.download-btn .small {
    font-size: 0.75rem;
    opacity: 0.8;
    display: block;
}

.download-btn .large {
    font-size: 1.125rem;
    font-weight: 600;
}

.download-mockup {
    display: flex;
    justify-content: center;
}

.download-mockup img {
    max-width: 300px;
    height: auto;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

/* 授权徽章 */
.license-section {
    background: var(--bg-secondary);
}

.license-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.license-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    min-width: 160px;
}

.license-badge img {
    width: 64px;
    height: 64px;
    object-fit: contain;
}

.license-badge span {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-align: center;
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

/* 响应式工具类 */
.hidden-mobile {
    display: none;
}

@media (min-width: 768px) {
    .hidden-mobile {
        display: block;
    }
}

.hidden-desktop {
    display: block;
}

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

/* 打印样式 */
@media print {
    .site-header,
    .site-footer,
    .btn-cta {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
}