/* 日本三级 - 全新原创样式 v2.0 */
/* 域名: thyvw.cn */

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

:root {
    --primary-coral: #FF6B6B;
    --primary-orange: #FFA500;
    --primary-gradient: linear-gradient(135deg, #FF6B6B 0%, #FFA500 100%);
    --secondary-purple: #8B5CF6;
    --secondary-pink: #EC4899;
    --dark-bg: #0F0F1A;
    --dark-card: #1A1A2E;
    --dark-border: #2D2D44;
    --text-white: #FFFFFF;
    --text-gray: #A0A0B0;
    --text-light: #E0E0E8;
    --shadow-glow: 0 0 30px rgba(255, 107, 107, 0.3);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

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

ul, ol {
    list-style: none;
}

/* ==================== 容器布局 ==================== */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-gray);
}

/* ==================== 头部导航 ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--dark-border);
    transition: var(--transition);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    padding: 0 30px;
    max-width: 1600px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

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

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 35px;
}

.nav-link {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-light);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-coral);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active {
    color: var(--primary-coral);
}

.nav-link.active::after {
    width: 100%;
}

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

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--text-white);
    transition: var(--transition);
}

/* ==================== 搜索框 ==================== */
.search-bar {
    background: var(--dark-card);
    padding: 15px 0;
    border-bottom: 1px solid var(--dark-border);
    margin-top: 70px;
}

.search-container {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 15px 50px 15px 25px;
    background: var(--dark-bg);
    border: 2px solid var(--dark-border);
    border-radius: var(--radius-xl);
    color: var(--text-white);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.search-input:focus {
    border-color: var(--primary-coral);
    box-shadow: var(--shadow-glow);
}

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

.search-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.search-btn:hover {
    transform: translateY(-50%) scale(1.1);
}

.search-btn svg {
    width: 18px;
    height: 18px;
    fill: white;
}

/* ==================== Hero区域 ==================== */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 130px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.4;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(15,15,26,0.9) 0%, rgba(15,15,26,0.6) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 0 30px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 107, 107, 0.15);
    border: 1px solid var(--primary-coral);
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    color: var(--primary-coral);
    margin-bottom: 25px;
}

.hero-badge span {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

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

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-gray);
    margin-bottom: 35px;
    line-height: 1.8;
}

.hero-btns {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 20px rgba(255, 107, 107, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 107, 107, 0.5);
}

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

.btn-outline:hover {
    border-color: var(--primary-coral);
    color: var(--primary-coral);
}

/* ==================== 视频卡片网格 ==================== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

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

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

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

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

.video-card:hover .video-thumb img {
    transform: scale(1.08);
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
    cursor: pointer;
}

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

.video-play-btn svg {
    width: 24px;
    height: 24px;
    fill: white;
    margin-left: 4px;
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    padding: 4px 10px;
    background: rgba(0,0,0,0.8);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
}

.video-info {
    padding: 18px;
}

.video-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 0.85rem;
    color: var(--text-gray);
}

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

/* ==================== 服务模块 ==================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--dark-card);
    border-radius: var(--radius-lg);
    padding: 35px;
    border: 1px solid var(--dark-border);
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    border-color: var(--primary-coral);
    transform: translateY(-5px);
}

.service-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: var(--primary-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon svg {
    width: 35px;
    height: 35px;
    fill: white;
}

.service-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-desc {
    font-size: 0.95rem;
    color: var(--text-gray);
    line-height: 1.7;
}

/* ==================== 专家团队 ==================== */
.experts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.expert-card {
    background: var(--dark-card);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    border: 1px solid var(--dark-border);
    transition: var(--transition);
}

.expert-card:hover {
    border-color: var(--primary-coral);
}

.expert-avatar {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--primary-coral);
}

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

.expert-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.expert-role {
    font-size: 0.9rem;
    color: var(--primary-coral);
    margin-bottom: 15px;
}

.expert-desc {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.6;
}

/* ==================== 用户评价 ==================== */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.review-card {
    background: var(--dark-card);
    border-radius: var(--radius-lg);
    padding: 30px;
    border: 1px solid var(--dark-border);
}

.review-stars {
    display: flex;
    gap: 5px;
    margin-bottom: 15px;
}

.review-stars span {
    color: #FFD700;
    font-size: 1.2rem;
}

.review-text {
    font-size: 1rem;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.review-author-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.review-author-info h4 {
    font-size: 1rem;
    font-weight: 600;
}

.review-author-info span {
    font-size: 0.85rem;
    color: var(--text-gray);
}

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

.faq-item {
    background: var(--dark-card);
    border-radius: var(--radius-md);
    margin-bottom: 15px;
    border: 1px solid var(--dark-border);
    overflow: hidden;
}

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

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

.faq-question .icon {
    transition: var(--transition);
}

.faq-item.active .faq-question .icon {
    transform: rotate(180deg);
}

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

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer-inner {
    padding: 0 25px 20px;
    color: var(--text-gray);
    line-height: 1.7;
}

/* ==================== 联系我们 ==================== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 50px;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.contact-icon {
    width: 45px;
    height: 45px;
    background: var(--primary-gradient);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 20px;
    height: 20px;
    fill: white;
}

.contact-text h4 {
    font-size: 1rem;
    margin-bottom: 5px;
}

.contact-text p {
    font-size: 0.95rem;
    color: var(--text-gray);
}

.qrcode-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

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

.qrcode-item img {
    width: 150px;
    height: 150px;
    margin: 0 auto 15px;
    border-radius: var(--radius-md);
}

.qrcode-item p {
    font-size: 0.95rem;
    color: var(--text-gray);
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--dark-card);
    padding: 60px 0 30px;
    border-top: 1px solid var(--dark-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    font-size: 0.95rem;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

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

.footer-social a:hover {
    background: var(--primary-gradient);
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
}

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

.footer-links ul li a {
    font-size: 0.95rem;
    color: var(--text-gray);
}

.footer-links ul li a:hover {
    color: var(--primary-coral);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--dark-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-bottom p {
    font-size: 0.9rem;
    color: var(--text-gray);
}

/* ==================== 面包屑导航 ==================== */
.breadcrumb {
    padding: 100px 0 20px;
    background: var(--dark-card);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
}

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

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

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

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

/* ==================== 响应式设计 ==================== */
@media (max-width: 1200px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--dark-bg);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        border-bottom: 1px solid var(--dark-border);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-link {
        padding: 15px 0;
        border-bottom: 1px solid var(--dark-border);
        width: 100%;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid,
    .experts-grid,
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero {
        min-height: 500px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-desc {
        font-size: 1rem;
    }
    
    .hero-btns {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .services-grid,
    .experts-grid,
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .qrcode-grid {
        grid-template-columns: 1fr;
    }
}

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

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

/* 懒加载占位 */
.lazy-load {
    opacity: 0;
    transition: opacity 0.5s ease;
}

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