/* 
 * 自媒体视频创作网站 - 主样式表
 * 移动端优先设计 | 2026年SEO优化
 * 配色方案：深紫渐变 + 粉紫点缀
 */

/* ========== CSS变量定义 ========== */
:root {
    --primary-dark: #0f0a1a;
    --primary-purple: #1a0a2e;
    --accent-violet: #8b5cf6;
    --accent-pink: #ff6b9d;
    --accent-cyan: #00cec9;
    --text-white: #ffffff;
    --text-gray: #a0a0b0;
    --text-light: #e0e0e8;
    --card-bg: rgba(26, 10, 46, 0.8);
    --border-color: rgba(139, 92, 246, 0.3);
    --gradient-main: linear-gradient(135deg, #1a0a2e 0%, #2d1b4e 50%, #1a0a2e 100%);
    --gradient-accent: linear-gradient(90deg, #8b5cf6, #ff6b9d);
    --shadow-glow: 0 0 30px rgba(139, 92, 246, 0.3);
    --font-main: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --border-radius: 12px;
    --border-radius-lg: 20px;
}

/* ========== 全局重置 ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

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

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

.section {
    padding: 60px 0;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 32px;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-accent);
    margin: 16px auto 0;
    border-radius: 2px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--text-white);
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(139, 92, 246, 0.6);
}

.btn-outline {
    background: transparent;
    color: var(--accent-violet);
    border: 2px solid var(--accent-violet);
}

.btn-outline:hover {
    background: var(--accent-violet);
    color: var(--text-white);
}

/* ========== 头部导航 ========== */
.header {
    background: rgba(15, 10, 26, 0.95);
    backdrop-filter: blur(10px);
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-img {
    height: 48px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-toggle {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 28px;
    height: 3px;
    background: var(--text-white);
    margin: 6px 0;
    border-radius: 2px;
    transition: var(--transition-fast);
}

.nav-menu {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 8px;
    padding-top: 16px;
}

.nav-menu.active {
    display: flex;
}

.nav-link {
    display: block;
    padding: 12px 16px;
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    background: rgba(139, 92, 246, 0.2);
    color: var(--accent-violet);
}

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

/* ========== 面包屑导航 ========== */
.breadcrumb {
    padding: 16px 0;
    background: rgba(26, 10, 46, 0.5);
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    font-size: 0.875rem;
}

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

.breadcrumb-item::after {
    content: '›';
    color: var(--text-gray);
}

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

.breadcrumb-link {
    color: var(--accent-violet);
    text-decoration: none;
    transition: var(--transition-fast);
}

.breadcrumb-link:hover {
    color: var(--accent-pink);
}

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

/* ========== 英雄区域 ========== */
.hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    background: var(--gradient-main);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 40px 16px;
}

.hero-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-gray);
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-btns {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
}

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

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

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
    border-color: var(--accent-violet);
}

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

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

.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(139, 92, 246, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.video-play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 20px solid var(--text-white);
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 4px;
}

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

.video-info {
    padding: 20px;
}

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

.video-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.875rem;
    color: var(--text-gray);
}

.video-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    color: #ffd700;
}

/* ========== 明星合作模块 ========== */
.star-collab {
    background: linear-gradient(180deg, var(--primary-dark) 0%, var(--primary-purple) 100%);
}

.star-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.star-card {
    background: var(--card-bg);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

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

.star-content {
    padding: 24px;
}

.star-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-pink);
    margin-bottom: 12px;
}

.star-desc {
    color: var(--text-gray);
    font-size: 0.9375rem;
}

/* ========== 咨询模块 ========== */
.consult-section {
    background: var(--gradient-accent);
    padding: 48px 0;
    text-align: center;
}

.consult-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 16px;
}

.consult-desc {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 24px;
}

.consult-btn {
    background: var(--text-white);
    color: var(--accent-violet);
    font-weight: 700;
}

.consult-btn:hover {
    background: var(--primary-dark);
    color: var(--text-white);
}

/* ========== 海外公关模块 ========== */
.overseas-pr {
    background: rgba(26, 10, 46, 0.6);
}

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

.pr-text h3 {
    font-size: 1.5rem;
    color: var(--text-white);
    margin-bottom: 16px;
}

.pr-text p {
    color: var(--text-gray);
    margin-bottom: 24px;
}

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

.pr-features li {
    padding: 8px 0;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 12px;
}

.pr-features li::before {
    content: '✓';
    color: var(--accent-cyan);
    font-weight: 700;
}

/* ========== 近期案例模块 ========== */
.recent-cases {
    background: var(--primary-dark);
}

.case-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

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

.case-card:hover {
    border-color: var(--accent-pink);
    box-shadow: 0 0 20px rgba(255, 107, 157, 0.2);
}

.case-img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.case-content {
    padding: 20px;
}

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

.case-desc {
    color: var(--text-gray);
    font-size: 0.9375rem;
}

/* ========== 关于我们 ========== */
.about-section {
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-dark) 100%);
}

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

.about-intro {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 32px;
    text-align: center;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.about-item {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.about-item h4 {
    font-size: 1.125rem;
    color: var(--accent-violet);
    margin-bottom: 12px;
}

.about-item p {
    color: var(--text-gray);
}

/* ========== 支付方式 ========== */
.payment-section {
    background: var(--primary-dark);
    text-align: center;
}

.payment-highlight {
    background: linear-gradient(90deg, rgba(139, 92, 246, 0.2), rgba(255, 107, 157, 0.2));
    padding: 24px;
    border-radius: var(--border-radius-lg);
    margin-bottom: 32px;
    border: 1px solid var(--border-color);
}

.payment-highlight h4 {
    font-size: 1.25rem;
    color: var(--accent-pink);
    margin-bottom: 8px;
}

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

.payment-icon {
    height: 40px;
    width: auto;
    filter: brightness(0.9);
    transition: var(--transition-fast);
}

.payment-icon:hover {
    filter: brightness(1.1);
    transform: scale(1.05);
}

/* ========== 授权资质 ========== */
.license-section {
    background: rgba(26, 10, 46, 0.6);
}

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

.license-badge {
    display: inline-block;
    background: var(--card-bg);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--accent-violet);
    margin-bottom: 24px;
}

.license-badge img {
    max-width: 200px;
    height: auto;
}

.license-info {
    max-width: 600px;
    margin: 0 auto;
}

.license-info p {
    color: var(--text-gray);
    margin-bottom: 12px;
}

.license-number {
    font-family: monospace;
    font-size: 1.125rem;
    color: var(--accent-cyan);
    background: rgba(0, 206, 201, 0.1);
    padding: 8px 16px;
    border-radius: var(--border-radius);
    display: inline-block;
}

/* ========== 客户支持 ========== */
.support-section {
    background: var(--primary-dark);
}

.support-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

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

.support-card:hover {
    border-color: var(--accent-violet);
    transform: translateY(-4px);
}

.support-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.5rem;
}

.support-card h4 {
    font-size: 1.125rem;
    color: var(--text-white);
    margin-bottom: 8px;
}

.support-card p {
    color: var(--text-gray);
    font-size: 0.9375rem;
}

/* ========== 常见问题 ========== */
.faq-section {
    background: linear-gradient(180deg, var(--primary-dark) 0%, var(--primary-purple) 100%);
}

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

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

.faq-question {
    width: 100%;
    padding: 20px 24px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-white);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-fast);
}

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

.faq-icon {
    font-size: 1.5rem;
    transition: var(--transition-fast);
}

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

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

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

.faq-answer-inner {
    padding: 0 24px 20px;
    color: var(--text-gray);
}

/* ========== 用户评论 ========== */
.reviews-section {
    background: var(--primary-dark);
}

.reviews-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.review-card {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--border-radius-lg);
    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: var(--gradient-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
}

.review-info h4 {
    font-size: 1rem;
    color: var(--text-white);
    margin-bottom: 4px;
}

.review-location {
    font-size: 0.875rem;
    color: var(--text-gray);
}

.review-rating {
    color: #ffd700;
    font-size: 1rem;
    margin-bottom: 12px;
}

.review-content {
    color: var(--text-light);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 12px;
}

.review-date {
    font-size: 0.8125rem;
    color: var(--text-gray);
}

/* ========== 视频播放器 ========== */
.video-player-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: #000;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

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

.video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.video-progress {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
    cursor: pointer;
}

.video-progress-fill {
    height: 100%;
    background: var(--accent-violet);
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s linear;
}

/* ========== 页脚 ========== */
.footer {
    background: var(--primary-purple);
    padding: 60px 0 24px;
    border-top: 1px solid var(--border-color);
}

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

.footer-brand {
    text-align: center;
}

.footer-logo {
    height: 48px;
    margin-bottom: 16px;
}

.footer-desc {
    color: var(--text-gray);
    font-size: 0.9375rem;
    max-width: 300px;
    margin: 0 auto;
}

.footer-links h4 {
    font-size: 1.125rem;
    color: var(--text-white);
    margin-bottom: 20px;
    text-align: center;
}

.footer-links ul {
    list-style: none;
    text-align: center;
}

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

.footer-links a {
    color: var(--text-gray);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-violet);
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 24px;
}

.social-link {
    width: 44px;
    height: 44px;
    background: rgba(139, 92, 246, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-violet);
    text-decoration: none;
    transition: var(--transition-normal);
}

.social-link:hover {
    background: var(--accent-violet);
    color: var(--text-white);
    transform: translateY(-4px);
}

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

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

.footer-payment img {
    height: 32px;
    width: auto;
}

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

.footer-legal a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.footer-legal a:hover {
    color: var(--accent-violet);
}

.footer-copyright {
    color: var(--text-gray);
    font-size: 0.8125rem;
}

/* ========== 响应式设计 - 平板 ========== */
@media (min-width: 640px) {
    .container {
        padding: 0 24px;
    }
    
    .section {
        padding: 80px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-btns {
        flex-direction: row;
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .star-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .support-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        text-align: left;
    }
    
    .footer-brand,
    .footer-links h4,
    .footer-links ul {
        text-align: left;
    }
    
    .footer-desc {
        margin: 0;
    }
}

/* ========== 响应式设计 - 桌面 ========== */
@media (min-width: 1024px) {
    .nav-toggle {
        display: none;
    }
    
    .nav-menu {
        display: flex;
        width: auto;
        flex-direction: row;
        gap: 8px;
        padding-top: 0;
    }
    
    .nav-link {
        padding: 10px 16px;
    }
    
    .nav-cta {
        margin-top: 0;
        margin-left: 16px;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .star-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .case-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pr-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .support-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .reviews-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

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

.animate-pulse {
    animation: pulse 2s infinite;
}

/* ========== 懒加载占位 ========== */
.lazy-placeholder {
    background: linear-gradient(90deg, var(--card-bg) 25%, rgba(139, 92, 246, 0.1) 50%, var(--card-bg) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

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

/* ========== 无障碍优化 ========== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:focus-visible {
    outline: 2px solid var(--accent-violet);
    outline-offset: 2px;
}

/* ========== 打印样式 ========== */
@media print {
    .header,
    .footer,
    .nav-toggle,
    .video-play-btn {
        display: none;
    }
    
    body {
        background: #fff;
        color: #000;
    }
}