/* 
 * 视频创作与优化公司网站样式
 * 移动端优先设计
 * 2026年SEO优化版本
 */

/* CSS变量定义 */
:root {
    --primary-color: #e63946;
    --secondary-color: #1d3557;
    --accent-color: #f4a261;
    --text-dark: #1a1a2e;
    --text-light: #f8f9fa;
    --bg-light: #fefefe;
    --bg-dark: #0f0f23;
    --gradient-primary: linear-gradient(135deg, #e63946 0%, #f4a261 100%);
    --gradient-dark: linear-gradient(180deg, #1a1a2e 0%, #0f0f23 100%);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.18);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    line-height: 1.8;
    color: var(--text-dark);
    background-color: var(--bg-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

/* 容器 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* 头部导航 - 非sticky */
.site-header {
    background: var(--bg-dark);
    padding: 16px 0;
    position: relative;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.logo-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 48px;
    height: 48px;
    border-radius: 8px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: 1px;
}

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

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-light);
    transition: var(--transition);
}

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

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

.nav-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-item a {
    display: block;
    padding: 12px 16px;
    color: var(--text-light);
    background: rgba(255,255,255,0.05);
    border-radius: var(--border-radius);
    font-weight: 500;
}

.nav-item a:hover {
    background: var(--primary-color);
}

.nav-cta {
    display: inline-block;
    padding: 12px 24px;
    background: var(--gradient-primary);
    color: var(--text-light);
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    margin-top: 8px;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 16px 0;
    background: #f5f5f5;
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.875rem;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb-item::after {
    content: "›";
    color: #999;
}

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

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

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

/* Hero区域 */
.hero-section {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    background: var(--gradient-dark);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 60px 0;
    text-align: center;
}

.hero-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.3;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: rgba(255,255,255,0.85);
    margin-bottom: 24px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: inline-flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.btn-primary {
    display: inline-block;
    padding: 14px 32px;
    background: var(--gradient-primary);
    color: var(--text-light);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.btn-secondary {
    display: inline-block;
    padding: 14px 32px;
    background: transparent;
    color: var(--text-light);
    border: 2px solid var(--text-light);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--text-light);
    color: var(--text-dark);
}

/* 通用区块 */
.section {
    padding: 48px 0;
}

.section-alt {
    background: #f8f9fa;
}

.section-dark {
    background: var(--bg-dark);
    color: var(--text-light);
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

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

.section-dark .section-title {
    color: var(--text-light);
}

.section-desc {
    font-size: 1rem;
    color: #666;
    max-width: 700px;
    margin: 0 auto;
}

.section-dark .section-desc {
    color: rgba(255,255,255,0.7);
}

/* 视频卡片网格 */
.video-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.video-card {
    background: #fff;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

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

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

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

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    background: rgba(230, 57, 70, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.video-play-btn::after {
    content: "";
    width: 0;
    height: 0;
    border-left: 20px solid #fff;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 4px;
}

.video-card:hover .video-play-btn {
    transform: translate(-50%, -50%) scale(1.1);
}

.video-info {
    padding: 20px;
}

.video-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.video-meta {
    display: flex;
    gap: 16px;
    font-size: 0.875rem;
    color: #666;
}

.video-rating {
    display: flex;
    align-items: center;
    gap: 4px;
}

.star-icon {
    color: #ffc107;
}

/* 服务特色 */
.feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.feature-item {
    background: #fff;
    padding: 32px 24px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 12px;
}

.feature-desc {
    font-size: 0.9375rem;
    color: #666;
    line-height: 1.7;
}

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

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

.about-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 16px;
}

.about-text p {
    margin-bottom: 16px;
    color: #444;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: var(--border-radius);
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.875rem;
    color: #666;
}

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

.review-card {
    background: #fff;
    padding: 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

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

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

.review-author {
    flex: 1;
}

.review-name {
    font-weight: 600;
    color: var(--text-dark);
}

.review-location {
    font-size: 0.875rem;
    color: #666;
}

.review-rating {
    color: #ffc107;
    font-size: 1.125rem;
}

.review-content {
    color: #444;
    line-height: 1.8;
    margin-bottom: 12px;
}

.review-date {
    font-size: 0.8125rem;
    color: #999;
}

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

.faq-item {
    background: #fff;
    margin-bottom: 16px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    padding: 20px 24px;
    font-weight: 600;
    color: var(--secondary-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: #f8f9fa;
}

.faq-question::after {
    content: "+";
    font-size: 1.5rem;
    color: var(--primary-color);
}

.faq-item.active .faq-question::after {
    content: "−";
}

.faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 24px 24px;
    max-height: 500px;
}

.faq-answer p {
    color: #444;
    line-height: 1.8;
}

/* 支付方式 */
.payment-section {
    text-align: center;
}

.payment-icons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-top: 24px;
}

.payment-icon {
    padding: 12px 24px;
    background: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    font-weight: 600;
    color: var(--secondary-color);
}

.payment-icon.pix {
    background: var(--gradient-primary);
    color: #fff;
}

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

.support-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    background: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.support-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.25rem;
}

.support-info h4 {
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 4px;
}

.support-info p {
    font-size: 0.9375rem;
    color: #666;
}

/* 授权信息 */
.license-section {
    background: var(--bg-dark);
    color: var(--text-light);
}

.license-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    align-items: center;
}

.license-badge {
    text-align: center;
}

.license-badge img {
    max-width: 200px;
    margin: 0 auto;
    border-radius: var(--border-radius);
}

.license-info h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.license-info p {
    color: rgba(255,255,255,0.8);
    margin-bottom: 12px;
}

.license-number {
    font-family: monospace;
    font-size: 1.125rem;
    background: rgba(255,255,255,0.1);
    padding: 12px 20px;
    border-radius: var(--border-radius);
    display: inline-block;
}

/* 页脚 */
.site-footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: 48px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 32px;
}

.footer-col h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-light);
}

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    color: rgba(255,255,255,0.7);
    transition: var(--transition);
}

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

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
    margin-bottom: 8px;
}

.footer-payment {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 16px;
}

.footer-payment span {
    padding: 6px 12px;
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
    font-size: 0.8125rem;
}

/* 内页样式 */
.page-header {
    background: var(--gradient-dark);
    padding: 60px 0;
    text-align: center;
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 12px;
}

.page-subtitle {
    font-size: 1rem;
    color: rgba(255,255,255,0.8);
}

.content-section {
    padding: 48px 0;
}

.content-article {
    max-width: 800px;
    margin: 0 auto;
}

.content-article h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin: 32px 0 16px;
}

.content-article h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin: 24px 0 12px;
}

.content-article p {
    margin-bottom: 16px;
    color: #444;
}

.content-article ul {
    margin: 16px 0;
    padding-left: 24px;
}

.content-article ul li {
    position: relative;
    margin-bottom: 8px;
    padding-left: 20px;
}

.content-article ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

.content-image {
    margin: 32px 0;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

/* APP下载页面 */
.app-hero {
    background: var(--gradient-dark);
    padding: 80px 0;
}

.app-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
}

.app-info h1 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-light);
    margin-bottom: 16px;
}

.app-info p {
    color: rgba(255,255,255,0.85);
    margin-bottom: 24px;
}

.app-features {
    margin-bottom: 32px;
}

.app-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    color: rgba(255,255,255,0.9);
}

.app-features li::before {
    content: "✓";
    width: 24px;
    height: 24px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: #fff;
}

.download-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    background: #fff;
    border-radius: var(--border-radius);
    color: var(--text-dark);
    font-weight: 600;
    transition: var(--transition);
}

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

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

.app-preview img {
    max-width: 280px;
    margin: 0 auto;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
}

/* 视频播放模块 */
.video-player-wrap {
    position: relative;
    aspect-ratio: 16/9;
    background: #000;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin: 32px 0;
}

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

.video-poster {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

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

.video-poster .play-overlay {
    position: absolute;
    width: 80px;
    height: 80px;
    background: rgba(230, 57, 70, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-poster .play-overlay::after {
    content: "";
    width: 0;
    height: 0;
    border-left: 24px solid #fff;
    border-top: 14px solid transparent;
    border-bottom: 14px solid transparent;
    margin-left: 6px;
}

/* 响应式设计 - 平板 */
@media (min-width: 768px) {
    .container {
        padding: 0 24px;
    }

    .menu-toggle {
        display: none;
    }

    .main-nav {
        display: block;
        width: auto;
        padding-top: 0;
    }

    .nav-list {
        flex-direction: row;
        gap: 4px;
    }

    .nav-item a {
        padding: 8px 16px;
        background: transparent;
    }

    .nav-cta {
        margin-top: 0;
        margin-left: 8px;
    }

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

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .section {
        padding: 64px 0;
    }

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

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

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

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

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

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

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

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

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

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

/* 响应式设计 - 桌面 */
@media (min-width: 1024px) {
    .hero-section {
        min-height: 70vh;
    }

    .hero-title {
        font-size: 3rem;
    }

    .section {
        padding: 80px 0;
    }

    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .feature-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .review-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .support-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

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

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

/* 懒加载图片占位 */
img[loading="lazy"] {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* 打印样式 */
@media print {
    .site-header,
    .site-footer,
    .hero-cta,
    .video-play-btn {
        display: none;
    }
}