/* 抖阴 - 主样式文件 */
/* 影视传媒公司+视频社区 - nnksjv.cn */

/* CSS Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #e91e8c;
    --secondary-color: #9c27b0;
    --accent-color: #ff4081;
    --dark-bg: #1a1a2e;
    --light-bg: #f8f9fa;
    --text-dark: #2d3436;
    --text-light: #ffffff;
    --gradient-primary: linear-gradient(135deg, #e91e8c 0%, #9c27b0 100%);
    --gradient-dark: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%);
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 30px rgba(233, 30, 140, 0.3);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

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

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

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

ul, ol {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-soft);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

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

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

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

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu a {
    color: var(--text-light);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 20px;
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    background: var(--gradient-primary);
    color: var(--text-light);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    border-radius: 3px;
    transition: var(--transition);
}

/* Breadcrumb Navigation */
.breadcrumb {
    background: var(--gradient-dark);
    padding: 10px 0;
    margin-top: 70px;
    border-bottom: 1px solid rgba(233, 30, 140, 0.2);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

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

.breadcrumb-list li::after {
    content: '/';
    margin-left: 10px;
    color: rgba(255, 255, 255, 0.5);
}

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

.breadcrumb-list a {
    color: var(--accent-color);
    transition: var(--transition);
}

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

.breadcrumb-list span {
    color: rgba(255, 255, 255, 0.8);
}

/* Search Box */
.search-section {
    background: var(--gradient-dark);
    padding: 20px 0;
    margin-top: 0;
}

.search-box {
    display: flex;
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    overflow: hidden;
    border: 2px solid rgba(233, 30, 140, 0.3);
}

.search-box input {
    flex: 1;
    padding: 15px 25px;
    border: none;
    background: transparent;
    color: var(--text-light);
    font-size: 1rem;
    outline: none;
}

.search-box input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.search-box button {
    padding: 15px 30px;
    background: var(--gradient-primary);
    border: none;
    color: var(--text-light);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.search-box button:hover {
    opacity: 0.9;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    background: var(--gradient-dark);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-banner.jpg') center/cover no-repeat;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--text-light);
    padding: 60px 20px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero h2 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-top: 40px;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 35px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-light);
    box-shadow: 0 4px 15px rgba(233, 30, 140, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--text-light);
}

/* Section Styles */
.section {
    padding: 80px 0;
}

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

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.section-title p {
    font-size: 1.1rem;
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto;
}

/* Video Cards Grid */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.video-card {
    background: var(--text-light);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

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

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

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

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.play-button::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 20px solid var(--text-light);
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 5px;
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.8);
    color: var(--text-light);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.video-info {
    padding: 20px;
}

.video-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: #666;
}

.video-stats {
    display: flex;
    gap: 15px;
}

.video-stats span {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* Category Tags */
.category-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 40px;
}

.category-tag {
    padding: 10px 25px;
    background: rgba(233, 30, 140, 0.1);
    color: var(--primary-color);
    border-radius: 25px;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
}

.category-tag:hover,
.category-tag.active {
    background: var(--gradient-primary);
    color: var(--text-light);
}

/* Expert Cards */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.expert-card {
    background: var(--text-light);
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
}

.expert-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.expert-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 0 auto 20px;
    overflow: hidden;
    border: 4px solid var(--primary-color);
}

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

.expert-name {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.expert-title {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 15px;
}

.expert-bio {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 20px;
}

.expert-social {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.expert-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--light-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    padding: 40px 30px;
    text-align: center;
    border: 1px solid rgba(233, 30, 140, 0.2);
    transition: var(--transition);
}

.feature-card:hover {
    background: rgba(233, 30, 140, 0.1);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.feature-card p {
    font-size: 0.95rem;
    opacity: 0.8;
}

/* Partner Logos */
.partner-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 40px;
    padding: 40px 0;
}

.partner-logo {
    opacity: 0.6;
    transition: var(--transition);
    filter: grayscale(100%);
}

.partner-logo:hover {
    opacity: 1;
    filter: grayscale(0%);
}

/* Testimonials */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: var(--text-light);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-soft);
}

.testimonial-content {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    color: #555;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    overflow: hidden;
}

.testimonial-info h4 {
    font-weight: 600;
    margin-bottom: 3px;
}

.testimonial-info span {
    font-size: 0.9rem;
    color: #888;
}

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

.faq-item {
    background: var(--text-light);
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.faq-question {
    padding: 20px 25px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

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

.faq-answer {
    padding: 0 25px 20px;
    color: #666;
    line-height: 1.8;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 40px;
}

.contact-info-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    padding: 30px;
    border: 1px solid rgba(233, 30, 140, 0.2);
}

.contact-info-card h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 15px;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.qr-codes {
    display: flex;
    gap: 30px;
    justify-content: center;
    margin-top: 30px;
}

.qr-code-item {
    text-align: center;
}

.qr-code-item img {
    width: 150px;
    height: 150px;
    border-radius: 10px;
    margin-bottom: 10px;
}

/* Footer */
.footer {
    background: var(--dark-bg);
    color: var(--text-light);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.footer-col ul li {
    margin-bottom: 10px;
}

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

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

.footer-bottom p {
    opacity: 0.7;
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

.social-links a {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

/* Breadcrumb */
.breadcrumb {
    padding: 15px 0;
    background: rgba(0, 0, 0, 0.03);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

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

.breadcrumb-separator {
    opacity: 0.5;
}

/* Page Banner */
.page-banner {
    background: var(--gradient-dark);
    padding: 100px 0 60px;
    text-align: center;
    color: var(--text-light);
    margin-top: 70px;
}

.page-banner h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.page-banner p {
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto;
}

/* Lazy Loading */
.lazy-load {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.lazy-load.loaded {
    opacity: 1;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--dark-bg);
        flex-direction: column;
        padding: 20px;
        gap: 10px;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero h2 {
        font-size: 1.2rem;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title h2 {
        font-size: 1.8rem;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    
    .qr-codes {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 0.9rem;
    }
    
    .search-box {
        flex-direction: column;
        border-radius: 15px;
    }
    
    .search-box button {
        border-radius: 0 0 15px 15px;
    }
}

/* Animation Keyframes */
@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;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

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

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