/* 
 * 捷克街头 - 原创动漫主题CSS样式表
 * 颜色主题：深空蓝(#080c23) + 银魂银白(#e6e6ff) + 赛博紫(#b4a0ff)
 */

:root {
    --primary-color: #080c23;
    --secondary-color: #141e46;
    --accent-color: #b4a0ff;
    --text-main: #e6e6ff;
    --text-muted: #a0aabf;
    --bg-light: #1a265c;
    --border-color: #2a3b7a;
    --hover-color: #d2c8ff;
    --danger-color: #ff4d4d;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--primary-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--text-main);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent-color);
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
header {
    background-color: rgba(8, 12, 35, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

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

.nav-logo {
    height: 40px;
    width: auto;
}

.nav-favicon {
    height: 32px;
    width: 32px;
    border-radius: 50%;
}

.main-nav {
    display: flex;
    gap: 25px;
}

.main-nav li {
    position: relative;
}

.main-nav a {
    font-size: 16px;
    font-weight: 500;
    padding: 10px 0;
    display: block;
}

.main-nav a:hover, .main-nav a.active {
    color: var(--accent-color);
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

.main-nav a:hover::after, .main-nav a.active::after {
    width: 100%;
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--secondary-color);
    min-width: 150px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    border-bottom: 1px solid var(--border-color);
}

.dropdown-menu li:last-child {
    border-bottom: none;
}

.dropdown-menu a {
    padding: 12px 20px;
    font-size: 14px;
}

.dropdown-menu a::after {
    display: none;
}

.dropdown-menu a:hover {
    background-color: var(--bg-light);
    color: var(--hover-color);
}

/* Search Bar */
.search-bar {
    display: flex;
    align-items: center;
    background-color: var(--bg-light);
    border-radius: 20px;
    padding: 5px 15px;
    border: 1px solid var(--border-color);
}

.search-bar input {
    background: transparent;
    border: none;
    color: var(--text-main);
    outline: none;
    padding: 5px;
    width: 150px;
}

.search-bar input::placeholder {
    color: var(--text-muted);
}

.search-bar button {
    background: transparent;
    border: none;
    color: var(--accent-color);
    cursor: pointer;
    font-size: 16px;
}

/* Mobile Menu Toggle */
.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 24px;
    cursor: pointer;
}

/* Banner Section */
.banner {
    margin-top: 70px;
    height: 500px;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(8,12,35,0.9) 0%, rgba(8,12,35,0.4) 100%);
}

.banner-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}

.banner h1 {
    font-size: 48px;
    margin-bottom: 20px;
    color: var(--hover-color);
    text-shadow: 0 2px 10px rgba(180,160,255,0.5);
}

.banner p {
    font-size: 18px;
    margin-bottom: 30px;
    color: var(--text-muted);
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--accent-color);
    color: var(--primary-color);
    border-radius: 25px;
    font-weight: bold;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--hover-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(180,160,255,0.4);
    color: var(--primary-color);
}

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

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

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

.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
    color: var(--hover-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
}

.WbI9GUI {
    background-color: var(--secondary-color);
}

/* Core Business Cards */
.core-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.core-card {
    background-color: var(--bg-light);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.core-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
    border-color: var(--accent-color);
}

.core-icon {
    font-size: 40px;
    color: var(--accent-color);
    margin-bottom: 20px;
}

.core-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.core-card p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Video Grid */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.video-card {
    background-color: var(--bg-light);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.4);
    border-color: var(--accent-color);
}

.video-thumb {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    overflow: hidden;
}

.video-thumb img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background-color: rgba(180,160,255,0.8);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-left: 15px solid var(--primary-color);
    margin-left: 5px;
}

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

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background-color: rgba(0,0,0,0.7);
    color: #fff;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 12px;
}

.video-info {
    padding: 15px;
}

.video-title {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 12px;
    margin-bottom: 10px;
}

.video-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.video-tag {
    background-color: var(--secondary-color);
    color: var(--accent-color);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    border: 1px solid var(--border-color);
}

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

.expert-card {
    background-color: var(--bg-light);
    border-radius: 10px;
    overflow: hidden;
    text-align: center;
    border: 1px solid var(--border-color);
}

.expert-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.expert-info {
    padding: 20px;
}

.expert-name {
    font-size: 20px;
    color: var(--hover-color);
    margin-bottom: 5px;
}

.expert-title {
    color: var(--accent-color);
    font-size: 14px;
    margin-bottom: 15px;
}

.expert-desc {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 20px;
}

.expert-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.expert-actions .btn {
    padding: 8px 15px;
    font-size: 12px;
}

/* Reviews Section */
.p5y9u {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.review-card {
    background-color: var(--secondary-color);
    padding: 25px;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
}

.review-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.review-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--bg-light);
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    color: var(--accent-color);
    margin-right: 15px;
}

.review-user h4 {
    font-size: 16px;
    margin-bottom: 2px;
}

.review-stars {
    color: #ffd700;
    font-size: 12px;
}

.review-content {
    color: var(--text-muted);
    font-size: 14px;
    font-style: italic;
}

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

.faq-item {
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

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

.faq-icon {
    font-size: 20px;
    transition: transform 0.3s ease;
}

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

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    color: var(--text-muted);
    font-size: 14px;
}

.faq-item.active .faq-answer {
    padding: 0 20px 20px;
    max-height: 500px;
}

/* Footer */
footer {
    background-color: #040612;
    padding: 60px 0 20px;
    border-top: 1px solid var(--border-color);
}

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

.0IPukU h3 {
    font-size: 24px;
    color: var(--hover-color);
    margin-bottom: 15px;
}

.IRe8NaH1 {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--text-main);
}

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

.footer-links a {
    color: var(--text-muted);
    font-size: 14px;
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.2fEIm li {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.xBA00 {
    display: flex;
    gap: 20px;
}

.dm3f3vlr {
    text-align: center;
}

.xl8HP2 {
    width: 100px;
    height: 100px;
    background-color: #fff;
    padding: 5px;
    border-radius: 5px;
    margin-bottom: 10px;
}

.xl8HP2 img {
    width: 100%;
    height: 100%;
}

.dm3f3vlr p {
    font-size: 12px;
    color: var(--text-muted);
}

.7h3Xs {
    margin-bottom: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.7h3Xs a {
    display: inline-block;
    color: var(--text-muted);
    font-size: 12px;
    margin-right: 15px;
    margin-bottom: 10px;
}

.7h3Xs a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 14px;
}

/* Video Modal */
.video-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.9);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    width: 90%;
    max-width: 800px;
    background-color: var(--primary-color);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--accent-color);
}

.close-modal {
    position: absolute;
    top: 10px;
    right: 15px;
    color: #fff;
    font-size: 28px;
    cursor: pointer;
    z-index: 10;
}

.close-modal:hover {
    color: var(--danger-color);
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
}

.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 40px;
    height: 40px;
    background-color: var(--accent-color);
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    border: none;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--hover-color);
    transform: translateY(-3px);
}

/* Responsive */
@media (max-width: 992px) {
    .main-nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--primary-color);
        flex-direction: column;
        gap: 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .main-nav.active {
        display: flex;
    }
    
    .main-nav li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }
    
    .main-nav a {
        padding: 15px 20px;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        border-top: 1px solid var(--border-color);
        background-color: var(--secondary-color);
        display: none;
    }
    
    .has-dropdown.active .dropdown-menu {
        display: block;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .search-bar {
        display: none;
    }
    
    .banner h1 {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    .banner {
        height: 400px;
    }
    
    .banner h1 {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(100%, 1fr));
    }
    
    .xBA00 {
        flex-direction: column;
    }
}