/* 全局样式与CSS变量 */
:root {
    --primary: #e94560;
    --secondary: #0f3460;
    --dark: #1a1a2e;
    --mid: #16213e;
    --light: #f0f0f5;
    --text: #e0e0e0;
    --card-bg: rgba(255, 255, 255, 0.06);
    --glass: rgba(255, 255, 255, 0.08);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --radius: 16px;
    --transition: 0.3s ease;
    --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--dark);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* 暗色模式基础 */
body {
    background: #0d0d1a;
    color: #ddd;
}

/* 滚动条 */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--dark);
}
::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}

/* 通用标题 */
h1, h2, h3, h4 {
    color: #fff;
    margin-bottom: 0.5em;
}
h2 {
    font-size: 2.2rem;
    text-align: center;
    margin: 2rem 0 1.5rem;
    background: linear-gradient(135deg, var(--primary), #ff6b81);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 容器 */
section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* 导航 */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(26, 26, 46, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.8rem 1.5rem;
    flex-wrap: wrap;
}

.logo svg {
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.8rem;
    flex-wrap: wrap;
}

.nav-menu a {
    color: #ccc;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding-bottom: 4px;
}

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

.nav-menu a:hover {
    color: #fff;
}

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

.search-box {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 30px;
    padding: 0.3rem 0.8rem;
    gap: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.search-box input {
    background: transparent;
    border: none;
    color: #fff;
    outline: none;
    width: 120px;
    font-size: 0.9rem;
}

.search-box input::placeholder {
    color: #888;
}

.dark-toggle {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #fff;
    font-size: 1.3rem;
    cursor: pointer;
    padding: 0.4rem 0.8rem;
    border-radius: 30px;
    transition: var(--transition);
}

.dark-toggle:hover {
    background: var(--primary);
}

/* Hero 区域 */
.hero {
    padding: 0;
    max-width: 100%;
    margin-top: 70px;
    position: relative;
}

.banner-slider {
    position: relative;
    overflow: hidden;
    border-radius: 0 0 30px 30px;
}

.slide {
    display: none;
    width: 100%;
}

.slide.active {
    display: block;
    animation: fadeIn 0.8s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(1.02); }
    to { opacity: 1; transform: scale(1); }
}

.banner-slider svg {
    display: block;
    width: 100%;
    height: auto;
    min-height: 350px;
    object-fit: cover;
}

.banner-controls {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    padding: 1rem 0;
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--primary);
    transform: scale(1.3);
}

/* 面包屑 */
.breadcrumb {
    padding: 1rem 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.breadcrumb ol {
    list-style: none;
    display: flex;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: #aaa;
}

.breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* 企业介绍 */
.about-content {
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
}

.about-img {
    flex: 1 1 350px;
    max-width: 100%;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.about-text {
    flex: 2 1 400px;
}

.about-text h2 {
    text-align: left;
    margin-top: 0;
}

.about-text p {
    margin-bottom: 1rem;
    color: #bbb;
    font-size: 1rem;
    line-height: 1.8;
}

/* 品牌故事 */
.brand-story {
    background: var(--glass);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    margin: 2rem auto;
}

.story-timeline {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
}

.story-item {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.5rem;
    flex: 1 1 220px;
    border-left: 4px solid var(--primary);
    transition: var(--transition);
}

.story-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.story-item h3 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

/* 企业文化 */
.culture-grid {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.culture-card {
    background: var(--card-bg);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: center;
    flex: 1 1 250px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.03);
}

.culture-card:hover {
    transform: translateY(-8px);
    background: rgba(233, 69, 96, 0.08);
    box-shadow: 0 12px 40px rgba(233, 69, 96, 0.15);
}

.culture-card svg {
    margin-bottom: 1rem;
}

/* 团队 */
.team-grid {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.team-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: center;
    flex: 1 1 250px;
    transition: var(--transition);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.team-card:hover {
    transform: scale(1.03);
    background: rgba(15, 52, 96, 0.3);
}

.team-card svg {
    margin-bottom: 1rem;
}

/* 产品中心 */
.product-grid {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.product-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    flex: 1 1 220px;
    transition: var(--transition);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(233, 69, 96, 0.2);
}

.product-card svg {
    margin-bottom: 1rem;
    border-radius: var(--radius);
}

.product-card h3 {
    color: var(--primary);
    margin: 0.5rem 0;
}

/* 产品优势 */
.adv-grid {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.adv-card {
    background: var(--glass);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-radius: var(--radius);
    padding: 1.8rem;
    text-align: center;
    flex: 1 1 220px;
    transition: var(--transition);
}

.adv-card:hover {
    background: rgba(233, 69, 96, 0.1);
    transform: translateY(-5px);
}

.adv-card svg {
    margin-bottom: 0.8rem;
}

/* 服务介绍 */
.service-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
}

.service-item {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.5rem;
    flex: 1 1 240px;
    border-top: 3px solid var(--secondary);
    transition: var(--transition);
}

.service-item:hover {
    border-top-color: var(--primary);
    transform: translateY(-3px);
}

/* 解决方案 */
.solution-grid {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.solution-card {
    background: linear-gradient(145deg, rgba(15, 52, 96, 0.3), rgba(26, 26, 46, 0.5));
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    flex: 1 1 280px;
    transition: var(--transition);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.solution-card:hover {
    background: linear-gradient(145deg, rgba(233, 69, 96, 0.15), rgba(15, 52, 96, 0.3));
    transform: scale(1.02);
}

/* 应用行业 */
.industry-grid {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.industry-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    flex: 1 1 180px;
    transition: var(--transition);
}

.industry-card:hover {
    background: var(--glass);
    transform: translateY(-4px);
}

/* 数据统计 */
.stats-grid {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
    background: var(--glass);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: var(--radius);
    padding: 2rem;
}

.stat-item {
    text-align: center;
    flex: 1 1 180px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-item span {
    font-size: 1.2rem;
    color: #fff;
}

.stat-item p {
    color: #aaa;
    margin-top: 0.3rem;
}

/* 客户案例 */
.case-grid {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.case-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1rem;
    flex: 1 1 300px;
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.case-card svg {
    border-radius: var(--radius);
    margin-bottom: 0.8rem;
    width: 100%;
    height: auto;
}

/* 合作伙伴 */
.partner-grid {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.partner-item {
    transition: var(--transition);
}

.partner-item:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

/* 客户评价 */
.testimonial-grid {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.testimonial-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.8rem;
    text-align: center;
    flex: 1 1 280px;
    transition: var(--transition);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.testimonial-card:hover {
    background: rgba(233, 69, 96, 0.06);
    transform: translateY(-4px);
}

.testimonial-card svg {
    margin-bottom: 1rem;
}

.testimonial-card p {
    font-style: italic;
    color: #bbb;
}

/* 新闻中心 */
.news-grid {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.news-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1rem;
    flex: 1 1 300px;
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.news-card svg {
    border-radius: var(--radius);
    margin-bottom: 0.8rem;
    width: 100%;
    height: auto;
}

.news-card time {
    color: #888;
    font-size: 0.85rem;
}

/* 最新文章 */
.article-list article {
    background: var(--glass);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border-radius: var(--radius);
    padding: 1.2rem 1.5rem;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.article-list article:hover {
    background: rgba(233, 69, 96, 0.06);
    transform: translateX(6px);
}

.article-list a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

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

.faq-item {
    background: var(--card-bg);
    border-radius: var(--radius);
    margin-bottom: 0.8rem;
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    width: 100%;
    background: transparent;
    border: none;
    color: #fff;
    font-size: 1.1rem;
    padding: 1.2rem 1.5rem;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(233, 69, 96, 0.05);
}

.faq-icon {
    font-size: 1.5rem;
    transition: var(--transition);
    color: var(--primary);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 1.5rem;
    color: #bbb;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 1.5rem 1.2rem;
}

/* HowTo */
.howto-steps {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.step {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    flex: 1 1 180px;
    transition: var(--transition);
}

.step:hover {
    transform: translateY(-6px);
    background: rgba(233, 69, 96, 0.05);
}

.step svg {
    margin-bottom: 0.8rem;
}

/* 联系我们 */
.contact-info {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1rem 1.5rem;
    flex: 1 1 280px;
    transition: var(--transition);
}

.contact-item:hover {
    background: var(--glass);
    transform: translateX(4px);
}

/* 安全说明、承诺、质量、法律等 */
.security, .commitment, .quality, .legal, .sitemap, .friend-links, .updates, .recommended, .author-info {
    background: var(--glass);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    margin: 1.5rem auto;
}

.legal-grid {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.legal-item {
    flex: 1 1 250px;
    padding: 1rem;
}

.legal-item a {
    color: var(--primary);
    text-decoration: none;
}

.commitment ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.commitment li {
    background: rgba(233, 69, 96, 0.1);
    padding: 0.5rem 1.2rem;
    border-radius: 30px;
    color: #fff;
}

.sitemap ul, .friend-links ul, .updates ul, .recommended ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.sitemap a, .friend-links a, .recommended a {
    color: var(--primary);
    text-decoration: none;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.03);
    transition: var(--transition);
}

.sitemap a:hover, .friend-links a:hover, .recommended a:hover {
    background: rgba(233, 69, 96, 0.15);
}

.updates li {
    color: #bbb;
}

.author-info p {
    color: #999;
    font-size: 0.9rem;
}

/* 页脚 */
footer {
    background: rgba(13, 13, 26, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 2rem 1.5rem;
    margin-top: 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: space-between;
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-contact p, .footer-copyright p {
    color: #999;
    font-size: 0.9rem;
}

/* 返回顶部 */
#back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(233, 69, 96, 0.4);
    transition: var(--transition);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
}

#back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(233, 69, 96, 0.6);
}

/* 滚动动画（通用） */
@keyframes scrollFadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

section {
    animation: scrollFadeIn 0.8s ease both;
}

/* 响应式 */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 0.8rem;
        padding: 0.6rem 1rem;
    }
    .nav-menu {
        gap: 1rem;
        justify-content: center;
    }
    .search-box input {
        width: 90px;
    }
    .hero {
        margin-top: 120px;
    }
    .banner-slider svg {
        min-height: 250px;
    }
    h2 {
        font-size: 1.6rem;
    }
    .about-content {
        flex-direction: column;
    }
    .about-img {
        flex: 1 1 auto;
        width: 100%;
    }
    .culture-card, .team-card, .product-card, .adv-card, .service-item, .solution-card, .industry-card, .stat-item, .case-card, .testimonial-card, .news-card, .step, .contact-item {
        flex: 1 1 100%;
    }
    .stats-grid {
        padding: 1rem;
    }
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    .footer-links ul {
        justify-content: center;
    }
    #back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    section {
        padding: 1.5rem 1rem;
    }
    .nav-menu {
        gap: 0.6rem;
        font-size: 0.85rem;
    }
    .nav-menu a {
        font-size: 0.85rem;
    }
    .search-box input {
        width: 70px;
        font-size: 0.8rem;
    }
    .stat-number {
        font-size: 2rem;
    }
}