/* 糖心vlog - 全新原创CSS样式 - 橙红渐变主题 */
/* 域名: edkcpy.cn */

:root {
    --primary: #FF6B35;
    --primary-dark: #E85A2B;
    --secondary: #FF8C61;
    --accent: #FFB088;
    --bg-dark: #1A1A2E;
    --bg-card: #16213E;
    --bg-light: #0F3460;
    --text-light: #FFFFFF;
    --text-muted: #B8C5D6;
    --gradient-primary: linear-gradient(135deg, #FF6B35 0%, #FF8C61 50%, #FFB088 100%);
    --gradient-dark: linear-gradient(180deg, #1A1A2E 0%, #16213E 100%);
    --shadow-card: 0 8px 32px rgba(255, 107, 53, 0.15);
    --shadow-hover: 0 12px 40px rgba(255, 107, 53, 0.25);
    --radius: 16px;
    --radius-sm: 8px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    min-height: 100vh;
}

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

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航 - 全新设计 */
.header {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(20px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 107, 53, 0.2);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo img {
    width: 48px;
    height: 48px;
    border-radius: 12px;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    color: var(--text-muted);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-light);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 60%;
}

/* 搜索框 - 导航下方 */
.search-bar {
    background: rgba(22, 33, 62, 0.8);
    padding: 15px 0;
    margin-top: 72px;
    border-bottom: 1px solid rgba(255, 107, 53, 0.1);
}

.search-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 14px 50px 14px 20px;
    border: 2px solid rgba(255, 107, 53, 0.3);
    border-radius: 50px;
    background: var(--bg-dark);
    color: var(--text-light);
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(255, 107, 53, 0.2);
}

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

.search-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

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

/* Hero区域 - 全新布局 */
.hero {
    padding: 60px 0 80px;
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(255, 107, 53, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 107, 53, 0.15);
    border: 1px solid rgba(255, 107, 53, 0.3);
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--secondary);
    margin-bottom: 24px;
}

.hero-badge::before {
    content: '🔥';
}

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

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

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 32px;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.btn {
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 8px 24px rgba(255, 107, 53, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(255, 107, 53, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--text-light);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

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

.hero-visual {
    position: relative;
}

.hero-image {
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    width: 100%;
}

.hero-float {
    position: absolute;
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 16px 20px;
    box-shadow: var(--shadow-card);
    display: flex;
    align-items: center;
    gap: 12px;
}

.hero-float.top-right {
    top: -20px;
    right: -20px;
}

.hero-float.bottom-left {
    bottom: 30px;
    left: -30px;
}

.float-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.float-text h4 {
    font-size: 1rem;
    margin-bottom: 2px;
}

.float-text p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* 视频卡片网格 */
.section {
    padding: 80px 0;
}

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

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255, 107, 53, 0.15);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--secondary);
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

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

.section-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* 视频卡片 - 全新设计 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.video-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.4s ease;
    position: relative;
}

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

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

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

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

.video-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.4s ease;
    cursor: pointer;
}

.video-play::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 20px solid white;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 4px;
}

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

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

.video-info {
    padding: 18px;
}

.video-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.video-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.video-tags {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.video-tag {
    padding: 4px 10px;
    background: rgba(255, 107, 53, 0.1);
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--secondary);
}

/* 分类标签栏 */
.category-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.category-tab {
    padding: 10px 24px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 107, 53, 0.2);
    border-radius: 50px;
    font-size: 0.95rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
}

.category-tab:hover,
.category-tab.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

/* 服务模块 - 横向卡片 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 32px;
    border: 1px solid rgba(255, 107, 53, 0.1);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.service-card:hover {
    border-color: rgba(255, 107, 53, 0.3);
    transform: translateY(-5px);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 64px;
    height: 64px;
    background: rgba(255, 107, 53, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 20px;
}

.service-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

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

/* 专家团队 */
.experts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.expert-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(255, 107, 53, 0.1);
}

.expert-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(255, 107, 53, 0.3);
}

.expert-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto 20px;
    border: 3px solid var(--primary);
    padding: 3px;
}

.expert-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.expert-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.expert-role {
    font-size: 0.9rem;
    color: var(--secondary);
    margin-bottom: 12px;
}

.expert-bio {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 20px 0;
    margin-top: 72px;
    background: var(--bg-card);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    font-size: 0.9rem;
}

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

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

.breadcrumb-list .separator {
    color: var(--text-muted);
}

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

/* 页面标题区 */
.page-header {
    padding: 60px 0;
    background: var(--gradient-dark);
    text-align: center;
}

.page-title {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 16px;
}

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

.page-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
}

/* 联系信息 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 40px;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    color: var(--text-light);
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 107, 53, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

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

.qrcode-section {
    display: flex;
    gap: 30px;
    margin-top: 20px;
}

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

.qrcode-item img {
    width: 140px;
    height: 140px;
    border-radius: 12px;
    margin-bottom: 12px;
}

.qrcode-item p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* 页脚 - 全新设计 */
.footer {
    background: var(--bg-card);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 107, 53, 0.1);
}

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

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

.footer-brand p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 300px;
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-light);
}

.footer-links {
    list-style: none;
}

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

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

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

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

.footer-bottom p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.footer-bottom a {
    color: var(--secondary);
}

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

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

@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .experts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
        gap: 15px;
    }
    
    .nav-menu {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .nav-link {
        padding: 8px 12px;
        font-size: 0.9rem;
    }
    
    .search-bar {
        margin-top: 120px;
    }
    
    .hero {
        padding: 40px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        gap: 20px;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .experts-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand p {
        max-width: 100%;
    }
    
    .qrcode-section {
        justify-content: center;
    }
}

/* 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;
}