/* ============================================
   草莓视频 全站样式表 - ek873.cn
   原创设计 | 影视传媒公司+视频社区
   ============================================ */

/* CSS Variables */
:root {
    --primary: #FF6B9D;
    --primary-dark: #C44569;
    --accent: #F8B500;
    --bg-dark: #0D0D1A;
    --bg-card: #1A1A2E;
    --bg-card-hover: #252542;
    --text-white: #FFFFFF;
    --text-light: #E0E0E0;
    --text-muted: #9E9EB8;
    --gradient-primary: linear-gradient(135deg, #FF6B9D, #C44569);
    --gradient-accent: linear-gradient(135deg, #F8B500, #FF6B9D);
    --gradient-dark: linear-gradient(180deg, #0D0D1A, #16213E);
    --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
    --shadow-hover: 0 12px 48px rgba(255,107,157,0.2);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.8;
    overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* Container */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section-padding { padding: 80px 0; }

/* Typography */
h1, h2, h3, h4, h5, h6 { color: var(--text-white); font-weight: 700; line-height: 1.3; }
h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; margin-bottom: 20px; }
h3 { font-size: 1.5rem; margin-bottom: 15px; }
h4 { font-size: 1.25rem; }
p { margin-bottom: 15px; color: var(--text-light); }

.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}
.section-title h2 {
    display: inline-block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 2.2rem;
}
.section-title p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-top: 10px;
}
.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background: var(--gradient-primary);
    margin: 15px auto 0;
    border-radius: 2px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}
.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 15px rgba(255,107,157,0.4);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255,107,157,0.6);
    color: #fff;
}
.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
}
.btn-accent {
    background: var(--gradient-accent);
    color: #fff;
}

/* ============ HEADER / NAV ============ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(13,13,26,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,107,157,0.1);
    transition: var(--transition);
}
.site-header.scrolled {
    background: rgba(13,13,26,0.98);
    box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    max-width: 1200px;
    margin: 0 auto;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo img {
    height: 40px;
    width: auto;
}
.logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.main-nav ul {
    display: flex;
    gap: 5px;
}
.main-nav a {
    color: var(--text-light);
    padding: 8px 15px;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: var(--transition);
}
.main-nav a:hover, .main-nav a.active {
    color: var(--primary);
    background: rgba(255,107,157,0.1);
}
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}
.mobile-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-white);
    transition: var(--transition);
}

/* Search Bar */
.search-bar {
    background: rgba(26,26,46,0.9);
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,107,157,0.05);
}
.search-bar .container {
    display: flex;
    justify-content: center;
}
.search-form {
    display: flex;
    max-width: 600px;
    width: 100%;
    position: relative;
}
.search-form input {
    flex: 1;
    padding: 10px 20px;
    border: 2px solid rgba(255,107,157,0.3);
    border-radius: 50px 0 0 50px;
    background: rgba(13,13,26,0.8);
    color: var(--text-white);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}
.search-form input:focus {
    border-color: var(--primary);
}
.search-form input::placeholder {
    color: var(--text-muted);
}
.search-form button {
    padding: 10px 25px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 0 50px 50px 0;
    color: #fff;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
}
.search-form button:hover {
    opacity: 0.9;
}

/* ============ HERO ============ */
.hero {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 60px;
}
.hero-bg {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: 0.6;
}
.hero-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(180deg, rgba(13,13,26,0.3) 0%, rgba(13,13,26,0.8) 100%);
}
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 40px 20px;
}
.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.hero-content h1 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-content p {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
}
.hero-stat {
    text-align: center;
}
.hero-stat .num {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent);
}
.hero-stat .label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ============ VIDEO CARDS ============ */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}
.video-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}
.video-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}
.video-card .thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}
.video-card .thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}
.video-card:hover .thumb img {
    transform: scale(1.05);
}
.video-card .play-btn {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 60px; height: 60px;
    background: rgba(255,107,157,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}
.video-card:hover .play-btn {
    opacity: 1;
}
.play-btn::after {
    content: '';
    width: 0; height: 0;
    border-left: 18px solid #fff;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 4px;
}
.video-card .duration {
    position: absolute;
    bottom: 8px; right: 8px;
    background: rgba(0,0,0,0.8);
    color: #fff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
}
.video-card .info {
    padding: 15px;
}
.video-card .title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-white);
    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: 15px;
    font-size: 0.85rem;
    color: var(--text-muted);
}
.video-card .meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}
.video-card .tag {
    display: inline-block;
    padding: 2px 10px;
    background: rgba(255,107,157,0.15);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.75rem;
    margin-top: 8px;
}

/* ============ FEATURE SECTIONS ============ */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
}
.feature-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(255,107,157,0.05);
}
.feature-card:hover {
    transform: translateY(-3px);
    border-color: rgba(255,107,157,0.2);
    box-shadow: var(--shadow-hover);
}
.feature-card .icon {
    width: 70px; height: 70px;
    margin: 0 auto 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}
.feature-card h4 {
    margin-bottom: 10px;
}
.feature-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ============ EXPERTS ============ */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}
.expert-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    transition: var(--transition);
}
.expert-card:hover {
    box-shadow: var(--shadow-hover);
}
.expert-card .avatar {
    width: 120px; height: 120px;
    border-radius: 50%;
    margin: 0 auto 20px;
    overflow: hidden;
    border: 3px solid var(--primary);
}
.expert-card .avatar img {
    width: 100%; height: 100%;
    object-fit: cover;
}
.expert-card .name {
    font-size: 1.2rem;
    color: var(--text-white);
    margin-bottom: 5px;
}
.expert-card .role {
    color: var(--primary);
    font-size: 0.9rem;
    margin-bottom: 15px;
}
.expert-card .bio {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 15px;
}
.expert-card .actions {
    display: flex;
    gap: 10px;
    justify-content: center;
}
.expert-card .actions a {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
}

/* ============ PARTNERS ============ */
.partner-wall {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    align-items: center;
}
.partner-logo {
    background: var(--bg-card);
    padding: 20px 30px;
    border-radius: var(--radius);
    opacity: 0.7;
    transition: var(--transition);
    font-size: 1.1rem;
    color: var(--text-muted);
    border: 1px solid rgba(255,107,157,0.05);
}
.partner-logo:hover {
    opacity: 1;
    border-color: var(--primary);
}

/* ============ FAQ ============ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    background: var(--bg-card);
    border-radius: var(--radius);
    margin-bottom: 15px;
    overflow: hidden;
    border: 1px solid rgba(255,107,157,0.05);
}
.faq-question {
    padding: 20px 25px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-white);
    transition: var(--transition);
}
.faq-question:hover {
    color: var(--primary);
}
.faq-question .arrow {
    transition: var(--transition);
    font-size: 1.2rem;
    color: var(--primary);
}
.faq-item.active .faq-question .arrow {
    transform: rotate(180deg);
}
.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    color: var(--text-muted);
    line-height: 1.8;
}
.faq-item.active .faq-answer {
    padding: 0 25px 20px;
    max-height: 500px;
}

/* ============ REVIEWS ============ */
.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}
.review-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 25px;
    border: 1px solid rgba(255,107,157,0.05);
}
.review-card .stars {
    color: var(--accent);
    margin-bottom: 10px;
    font-size: 1.1rem;
}
.review-card .text {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 15px;
    font-style: italic;
}
.review-card .author {
    display: flex;
    align-items: center;
    gap: 10px;
}
.review-card .author-avatar {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
}
.review-card .author-name {
    font-weight: 600;
    color: var(--text-white);
    font-size: 0.9rem;
}
.review-card .author-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ============ CONTACT ============ */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
}
.contact-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 25px;
    text-align: center;
}
.contact-card .icon-wrap {
    width: 60px; height: 60px;
    margin: 0 auto 15px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}
.contact-card h4 {
    margin-bottom: 10px;
}
.contact-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ============ FOOTER ============ */
.site-footer {
    background: #080812;
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255,107,157,0.1);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-brand .logo-text {
    font-size: 1.6rem;
    margin-bottom: 15px;
    display: block;
}
.footer-brand p {
    font-size: 0.9rem;
    color: var(--text-muted);
}
.footer-links h4 {
    margin-bottom: 15px;
    color: var(--text-white);
}
.footer-links a {
    display: block;
    color: var(--text-muted);
    padding: 5px 0;
    font-size: 0.9rem;
}
.footer-links a:hover {
    color: var(--primary);
}
.footer-qr {
    display: flex;
    gap: 20px;
    justify-content: center;
}
.footer-qr .qr-item {
    text-align: center;
}
.footer-qr .qr-item img {
    width: 120px;
    height: 120px;
    border-radius: 8px;
    margin-bottom: 8px;
}
.footer-qr .qr-item span {
    font-size: 0.8rem;
    color: var(--text-muted);
}
.footer-bottom {
    border-top: 1px solid rgba(255,107,157,0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}
.footer-bottom a {
    color: var(--primary);
}

/* Social Share */
.social-share {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 20px 0;
}
.social-share a {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    transition: var(--transition);
    font-size: 0.9rem;
}
.social-share a:hover {
    background: var(--primary);
    color: #fff;
}

/* ============ BREADCRUMB ============ */
.breadcrumb {
    padding: 15px 0;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 60px;
}
.breadcrumb a {
    color: var(--text-muted);
}
.breadcrumb a:hover {
    color: var(--primary);
}
.breadcrumb span {
    margin: 0 8px;
    color: var(--text-muted);
}

/* ============ INNER PAGE ============ */
.page-header {
    background: var(--bg-card);
    padding: 40px 0;
    margin-top: 60px;
    text-align: center;
}
.page-header h1 {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Video Player Page */
.video-player-wrap {
    max-width: 900px;
    margin: 30px auto;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.video-player-wrap iframe,
.video-player-wrap video {
    width: 100%;
    aspect-ratio: 16/9;
    display: block;
}
.video-detail {
    padding: 25px;
}
.video-detail h2 {
    margin-bottom: 15px;
}
.video-detail .meta-row {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 15px;
    font-size: 0.9rem;
    color: var(--text-muted);
}
.video-detail .tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}
.video-detail .tags span {
    padding: 4px 12px;
    background: rgba(255,107,157,0.15);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.8rem;
}

/* How-To Guide */
.howto-steps {
    max-width: 700px;
    margin: 0 auto;
}
.howto-step {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    align-items: flex-start;
}
.howto-step .step-num {
    width: 50px; height: 50px;
    min-width: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 800;
    color: #fff;
}
.howto-step .step-content h4 {
    margin-bottom: 5px;
}
.howto-step .step-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ============ LAZY LOAD ============ */
img {
    transition: opacity 0.3s ease;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 768px) {
    .mobile-toggle { display: flex; }
    .main-nav {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background: rgba(13,13,26,0.98);
        padding: 20px;
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition);
        z-index: 999;
    }
    .main-nav.active {
        transform: translateY(0);
        opacity: 1;
    }
    .main-nav ul {
        flex-direction: column;
    }
    .main-nav a {
        display: block;
        padding: 12px 15px;
    }
    .hero-content h1 { font-size: 2rem; }
    .hero-stats { gap: 20px; }
    .hero-stat .num { font-size: 1.8rem; }
    h2 { font-size: 1.6rem; }
    .section-padding { padding: 50px 0; }
    .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
    .footer-grid { grid-template-columns: 1fr; }
    .expert-grid { grid-template-columns: 1fr; }
    .review-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .hero-content h1 { font-size: 1.6rem; }
    .hero-content p { font-size: 1rem; }
    .hero-stats { flex-direction: column; gap: 15px; }
    .video-grid { grid-template-columns: 1fr; }
    .feature-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
}