/* 大发娱乐平台 - 完整样式表 */
/* 全局重置与基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: #f5f5fa;
    color: #1a1a2e;
    line-height: 1.6;
    transition: background 0.3s, color 0.3s;
    scroll-behavior: smooth;
}

body.dark {
    background: #0f0f1a;
    color: #e0e0e8;
}

a {
    color: inherit;
    text-decoration: none;
}

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

ul {
    list-style: none;
}

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

/* 毛玻璃效果 */
.glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    transition: background 0.3s, border 0.3s;
}

.dark .glass {
    background: rgba(20, 20, 40, 0.8);
    border-color: rgba(255, 255, 255, 0.1);
}

/* 按钮通用样式 */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    background: linear-gradient(135deg, #e94560, #0f3460);
    color: #fff;
    box-shadow: 0 4px 15px rgba(233, 69, 96, 0.3);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(233, 69, 96, 0.4);
}

/* 卡片通用样式 */
.card {
    border-radius: 16px;
    padding: 24px;
    background: #fff;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.dark .card {
    background: #1a1a30;
    border-color: rgba(255, 255, 255, 0.05);
}

/* 章节通用 */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #e94560, #0f3460);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-sub {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 48px;
}

.dark .section-sub {
    color: #999;
}

/* 头部导航 */
header.glass {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    border-radius: 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

header .logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #e94560, #0f3460);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

nav ul {
    display: flex;
    gap: 24px;
    align-items: center;
}

nav a {
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #e94560;
}

#darkToggle {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 8px;
    transition: background 0.3s;
}

#darkToggle:hover {
    background: rgba(0, 0, 0, 0.05);
}

.dark #darkToggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

#menuToggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero 区域 */
.hero {
    padding-top: 120px;
    padding-bottom: 80px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(233, 69, 96, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(15, 52, 96, 0.2) 0%, transparent 50%);
    pointer-events: none;
}

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

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 30px;
    background: rgba(233, 69, 96, 0.2);
    border: 1px solid rgba(233, 69, 96, 0.3);
    margin-bottom: 24px;
    font-size: 0.9rem;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, #e94560, #f5a623);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 32px;
    color: rgba(255, 255, 255, 0.8);
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-buttons .btn-outline {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    transition: all 0.3s;
}

.hero-buttons .btn-outline:hover {
    border-color: #e94560;
    background: rgba(233, 69, 96, 0.2);
}

/* 品牌介绍区域 */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 16px;
}

.about-text p {
    margin-bottom: 16px;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-card {
    text-align: center;
    padding: 32px 16px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: #e94560;
}

.stat-label {
    color: #666;
    margin-top: 8px;
}

/* 企业介绍 */
.enterprise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.enterprise-card .icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.enterprise-card h3 {
    margin-bottom: 8px;
}

/* 品牌历史 */
.timeline {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.timeline-year {
    min-width: 80px;
    font-weight: 700;
    color: #e94560;
}

.timeline-content strong {
    font-weight: 700;
}

/* 团队介绍 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.team-card {
    text-align: center;
}

.team-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e94560, #0f3460);
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #fff;
}

.team-card h4 {
    margin-bottom: 4px;
}

.team-card p {
    font-size: 0.9rem;
    color: #666;
}

/* 产品中心 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    text-align: center;
    padding: 32px 16px;
}

.product-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

.product-card h3 {
    margin-bottom: 8px;
}

.product-card p {
    color: #666;
    margin: 12px 0;
}

.product-card .learn-more {
    color: #e94560;
    font-weight: 600;
    transition: color 0.3s;
}

.product-card .learn-more:hover {
    color: #0f3460;
}

/* 产品优势 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.advantage-card {
    text-align: center;
}

.advantage-icon {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

.advantage-card h4 {
    margin-bottom: 4px;
}

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

/* 解决方案 */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.solution-card h3 {
    margin-bottom: 8px;
}

.solution-card p {
    color: #666;
}

/* 行业应用 */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.application-card {
    text-align: center;
}

.application-card .icon {
    font-size: 2rem;
}

.application-card h4 {
    margin-top: 8px;
}

/* 案例展示 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-image {
    height: 180px;
    border-radius: 12px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
    font-weight: 600;
}

.case-card h4 {
    margin-bottom: 8px;
}

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

/* 合作伙伴 */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
    text-align: center;
}

.partner-card {
    padding: 20px;
    font-weight: 700;
    font-size: 1.1rem;
}

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

.testimonial-card p {
    font-style: italic;
    margin-bottom: 16px;
}

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

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
}

.author-info strong {
    display: block;
}

.author-info span {
    font-size: 0.85rem;
    color: #666;
}

/* 新闻资讯 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-image {
    height: 140px;
    border-radius: 12px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.9rem;
}

.news-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

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

.news-more {
    text-align: center;
    margin-top: 32px;
}

.news-more a {
    color: #e94560;
    font-weight: 600;
    transition: color 0.3s;
}

.news-more a:hover {
    color: #0f3460;
}

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

.faq-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    padding: 16px 0;
}

.dark .faq-item {
    border-color: rgba(255, 255, 255, 0.08);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.05rem;
    user-select: none;
}

.faq-icon {
    font-size: 1.2rem;
    transition: transform 0.3s;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s;
    color: #666;
}

.faq-answer p {
    padding-top: 12px;
}

/* HowTo */
.howto-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.howto-card {
    text-align: center;
}

.howto-step {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

.howto-card h3 {
    margin-bottom: 8px;
}

.howto-card p {
    color: #666;
}

/* 联系我们 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.contact-info-item {
    margin-bottom: 20px;
}

.contact-info-item h4 {
    margin-bottom: 4px;
}

.contact-info-item p {
    color: #666;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    margin-bottom: 12px;
    background: rgba(255, 255, 255, 0.8);
    transition: border-color 0.3s;
}

.dark .contact-form input,
.dark .contact-form textarea {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    color: #e0e0e8;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #e94560;
}

.contact-form textarea {
    resize: vertical;
}

.contact-form .btn {
    width: 100%;
}

/* 友情链接 */
.friend-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    font-size: 0.9rem;
    color: #666;
}

.friend-links a {
    transition: color 0.3s;
}

.friend-links a:hover {
    color: #e94560;
}

/* 网站地图 */
.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    font-size: 0.9rem;
    text-align: center;
}

.sitemap-grid a {
    transition: color 0.3s;
}

.sitemap-grid a:hover {
    color: #e94560;
}

/* 页脚 */
footer {
    background: #1a1a2e;
    color: rgba(255, 255, 255, 0.7);
    padding: 40px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 32px;
}

.footer-col h4 {
    color: #fff;
    margin-bottom: 12px;
}

.footer-col p {
    font-size: 0.9rem;
}

.footer-col ul {
    list-style: none;
    font-size: 0.9rem;
}

.footer-col ul li {
    margin-bottom: 4px;
}

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

.footer-col ul li a:hover {
    color: #e94560;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.85rem;
}

/* 返回顶部 */
#backToTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e94560, #0f3460);
    color: #fff;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    display: none;
    z-index: 999;
    transition: all 0.3s;
}

#backToTop:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .products-grid,
    .cases-grid,
    .news-grid,
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        padding: 48px 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-sub {
        font-size: 1rem;
        margin-bottom: 32px;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .enterprise-grid,
    .advantages-grid,
    .applications-grid,
    .partners-grid,
    .howto-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid,
    .cases-grid,
    .news-grid,
    .solutions-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .sitemap-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    nav ul {
        gap: 12px;
    }
    
    #menuToggle {
        display: block;
    }
    
    nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(12px);
        padding: 20px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }
    
    .dark nav {
        background: rgba(20, 20, 40, 0.95);
    }
    
    nav ul {
        flex-direction: column;
        gap: 16px;
    }
    
    nav.active {
        display: block;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .enterprise-grid,
    .advantages-grid,
    .applications-grid,
    .partners-grid,
    .howto-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .sitemap-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
}

/* 暗色模式额外调整 */
.dark .hero {
    background: linear-gradient(135deg, #0a0a1a 0%, #12122e 50%, #0a1a3e 100%);
}

.dark .section-sub {
    color: #aaa;
}

.dark .stat-label,
.dark .product-card p,
.dark .advantage-card p,
.dark .solution-card p,
.dark .case-card p,
.dark .testimonial-card p,
.dark .news-card p,
.dark .faq-answer,
.dark .contact-info-item p,
.dark .howto-card p,
.dark .friend-links {
    color: #999;
}

.dark .team-card p,
.dark .author-info span {
    color: #aaa;
}

.dark .contact-form input,
.dark .contact-form textarea {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    color: #e0e0e8;
}

.dark .contact-form input::placeholder,
.dark .contact-form textarea::placeholder {
    color: #888;
}

/* 动画延迟辅助 */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }