/* 四虎 - 原创样式文件 */
/* 域名: aktxxw.cn */

/* ===== 基础重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fafafa;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

a:hover {
    color: #ff6b6b;
}

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

ul, ol {
    list-style: none;
}

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

/* ===== 头部导航 ===== */
.header {
    background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

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

.logo img {
    height: 45px;
    width: auto;
}

.logo h1 {
    color: #fff;
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    gap: 25px;
    align-items: center;
}

.nav-menu a {
    color: #fff;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: rgba(255,255,255,0.2);
}

/* ===== 搜索框 ===== */
.search-box {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,0.9);
    border-radius: 25px;
    padding: 5px 15px;
    margin-left: 20px;
}

.search-box input {
    border: none;
    outline: none;
    padding: 8px 10px;
    font-size: 14px;
    background: transparent;
    width: 180px;
}

.search-box button {
    background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%);
    border: none;
    color: #fff;
    padding: 8px 15px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    transition: transform 0.3s ease;
}

.search-box button:hover {
    transform: scale(1.05);
}

/* ===== 面包屑导航 ===== */
.breadcrumb {
    background: #f5f5f5;
    padding: 12px 0;
    font-size: 14px;
}

.breadcrumb a {
    color: #ff6b6b;
}

.breadcrumb span {
    color: #666;
    margin: 0 8px;
}

/* ===== Hero区域 ===== */
.hero {
    background: linear-gradient(135deg, rgba(255,107,107,0.9) 0%, rgba(255,142,83,0.9) 100%), url('../images/hero-banner.jpg') center/cover;
    padding: 80px 0;
    text-align: center;
    color: #fff;
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.95;
}

.hero-search {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    background: #fff;
    border-radius: 30px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

.hero-search input {
    flex: 1;
    border: none;
    padding: 15px 25px;
    font-size: 16px;
    outline: none;
}

.hero-search button {
    background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%);
    border: none;
    color: #fff;
    padding: 15px 30px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: transform 0.3s ease;
}

.hero-search button:hover {
    transform: scale(1.02);
}

/* ===== 通用区块 ===== */
.section {
    padding: 60px 0;
}

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

.section-title h2 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 10px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%);
    border-radius: 2px;
}

.section-title p {
    color: #666;
    font-size: 1rem;
    margin-top: 15px;
}

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

.video-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.video-thumb {
    position: relative;
    padding-top: 56.25%;
    overflow: hidden;
}

.video-thumb img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255,107,107,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.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: 5px;
}

.video-card:hover .play-btn {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
}

.video-info {
    padding: 15px;
}

.video-info h3 {
    font-size: 1rem;
    margin-bottom: 8px;
    color: #333;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: #999;
}

.video-tag {
    display: inline-block;
    background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%);
    color: #fff;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    margin-top: 8px;
}

/* ===== 特色模块 ===== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
}

.feature-card {
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 30px;
    color: #fff;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #333;
}

.feature-card p {
    color: #666;
    font-size: 0.95rem;
}

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

.expert-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    text-align: center;
    padding-bottom: 25px;
}

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

.expert-card h3 {
    font-size: 1.2rem;
    margin: 20px 0 5px;
    color: #333;
}

.expert-card .title {
    color: #ff6b6b;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.expert-card .credentials {
    font-size: 0.85rem;
    color: #666;
    padding: 0 20px;
}

/* ===== 直播专区 ===== */
.live-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.live-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
}

.live-card img {
    width: 100%;
    height: 350px;
    object-fit: cover;
}

.live-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: #ff4444;
    color: #fff;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.live-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    padding: 40px 15px 15px;
    color: #fff;
}

.live-info h3 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.live-info span {
    font-size: 0.85rem;
    opacity: 0.9;
}

/* ===== 用户评价 ===== */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
}

.testimonial-card {
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
}

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

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

.testimonial-user img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-user .name {
    font-weight: 600;
    color: #333;
}

.testimonial-user .date {
    font-size: 0.85rem;
    color: #999;
}

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

.faq-item {
    background: #fff;
    border-radius: 12px;
    margin-bottom: 15px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    overflow: hidden;
}

.faq-question {
    padding: 20px 25px;
    font-weight: 600;
    color: #333;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: #f9f9f9;
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: #ff6b6b;
    transition: transform 0.3s ease;
}

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

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 25px 20px;
    max-height: 500px;
}

.faq-answer p {
    color: #666;
    line-height: 1.8;
}

/* ===== 联系表单 ===== */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: #ff6b6b;
    outline: none;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.btn-submit {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%);
    border: none;
    color: #fff;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255,107,107,0.4);
}

/* ===== 二维码区域 ===== */
.qrcode-section {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
    margin-top: 40px;
}

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

.qrcode-item img {
    width: 150px;
    height: 150px;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
}

.qrcode-item p {
    margin-top: 10px;
    font-weight: 500;
    color: #333;
}

/* ===== 页脚 ===== */
.footer {
    background: #2d3436;
    color: #fff;
    padding: 50px 0 20px;
}

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

.footer-col h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: #ff6b6b;
}

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

.footer-col ul li a {
    color: #b2bec3;
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: #fff;
}

.footer-col p {
    color: #b2bec3;
    line-height: 1.8;
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 20px;
    text-align: center;
    color: #b2bec3;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: #ff6b6b;
}

/* ===== EEAT资质展示 ===== */
.eeat-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.credentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    text-align: center;
}

.credential-item {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.05);
}

.credential-item .number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ff6b6b;
    margin-bottom: 5px;
}

.credential-item .label {
    color: #666;
    font-size: 0.95rem;
}

/* ===== 分类标签 ===== */
.category-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.category-tab {
    padding: 10px 25px;
    background: #fff;
    border: 2px solid #ff6b6b;
    color: #ff6b6b;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.category-tab:hover,
.category-tab.active {
    background: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%);
    color: #fff;
    border-color: transparent;
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .search-box {
        margin-left: 0;
        margin-top: 10px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .section-title h2 {
        font-size: 1.6rem;
    }
    
    .video-grid,
    .feature-grid,
    .expert-grid,
    .live-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    
    .qrcode-section {
        gap: 30px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.6rem;
    }
    
    .hero-search {
        flex-direction: column;
    }
    
    .hero-search button {
        border-radius: 0 0 30px 30px;
    }
    
    .contact-form {
        padding: 25px;
    }
}