/* 开云体育官网 style.css - 完整样式文件 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #f7971e;
    --primary-dark: #e68a00;
    --secondary: #ffd200;
    --bg: #0f0f1a;
    --bg-card: #1a1a2e;
    --text: #e0e0e0;
    --text-light: #a0a0b0;
    --glass: rgba(26, 26, 46, 0.6);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --radius: 16px;
    --transition: 0.3s ease;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --hero-gradient: radial-gradient(circle at 20% 50%, rgba(247, 151, 30, 0.12), transparent 50%), radial-gradient(circle at 80% 50%, rgba(255, 210, 0, 0.08), transparent 50%);
    --btn-gradient: linear-gradient(135deg, var(--primary), var(--secondary));
    --text-gradient: linear-gradient(135deg, var(--primary), var(--secondary));
    --card-border: 1px solid rgba(255, 255, 255, 0.04);
    --card-hover-border: var(--primary);
    --card-hover-shadow: 0 12px 40px rgba(247, 151, 30, 0.15);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background var(--transition), color var(--transition);
}

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

a:hover {
    color: var(--secondary);
}

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

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

/* 毛玻璃效果 */
.glass {
    background: var(--glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 12px 32px;
    background: var(--btn-gradient);
    color: #1a1a2e;
    font-weight: 700;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(247, 151, 30, 0.4);
}

.btn:active {
    transform: translateY(0);
}

/* 区块 */
.section {
    padding: 80px 0;
    transition: background var(--transition);
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 16px;
    background: var(--text-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.3;
}

.section-sub {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 48px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 网格 */
.grid {
    display: grid;
    gap: 24px;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* 卡片 */
.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 32px 24px;
    border: var(--card-border);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition), background var(--transition);
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-6px);
    border-color: var(--card-hover-border);
    box-shadow: var(--card-hover-shadow);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--btn-gradient);
    opacity: 0;
    transition: opacity var(--transition);
}

.card:hover::before {
    opacity: 1;
}

/* 文字工具 */
.text-center {
    text-align: center;
}

.mt-16 {
    margin-top: 16px;
}

.mt-24 {
    margin-top: 24px;
}

.mt-32 {
    margin-top: 32px;
}

.mb-24 {
    margin-bottom: 24px;
}

.flex {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
}

.flex-center {
    justify-content: center;
}

/* 徽章 */
.badge {
    display: inline-block;
    padding: 4px 14px;
    background: var(--btn-gradient);
    color: #1a1a2e;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

/* 图标 */
.icon-svg {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    display: block;
}

.icon-svg-sm {
    width: 32px;
    height: 32px;
}

/* 统计数字 */
.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    background: var(--text-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-top: 4px;
}

/* 响应式 */
@media (max-width: 768px) {
    .section {
        padding: 48px 0;
    }

    .section-title {
        font-size: 1.6rem;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 2.2rem;
    }
}

/* 亮色模式（系统偏好） */
@media (prefers-color-scheme: light) {
    :root {
        --bg: #f5f5fa;
        --bg-card: #ffffff;
        --text: #1a1a2e;
        --text-light: #555;
        --glass: rgba(255, 255, 255, 0.7);
        --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
        --card-border: 1px solid rgba(0, 0, 0, 0.06);
    }
}

/* 亮色模式（手动切换） */
[data-theme="light"] {
    --bg: #f5f5fa;
    --bg-card: #ffffff;
    --text: #1a1a2e;
    --text-light: #555;
    --glass: rgba(255, 255, 255, 0.7);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --card-border: 1px solid rgba(0, 0, 0, 0.06);
    --hero-gradient: radial-gradient(circle at 20% 50%, rgba(247, 151, 30, 0.08), transparent 50%), radial-gradient(circle at 80% 50%, rgba(255, 210, 0, 0.05), transparent 50%);
}

/* 暗黑切换按钮 */
.dark-mode-toggle {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text);
    font-size: 1.3rem;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
}

.dark-mode-toggle:hover {
    transform: scale(1.1);
}

/* 返回顶部 */
.back-to-top {
    position: fixed;
    bottom: 84px;
    right: 24px;
    z-index: 998;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary);
    color: #1a1a2e;
    font-size: 1.2rem;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow);
    display: none;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.back-to-top.show {
    display: flex;
}

.back-to-top:hover {
    transform: translateY(-4px);
}

/* Hero 区域 */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    padding: 40px 0;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: var(--hero-gradient);
    z-index: 0;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 16px;
    background: var(--text-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero .btn {
    font-size: 1.1rem;
    padding: 16px 40px;
}

@media (max-width: 768px) {
    .hero {
        min-height: 60vh;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1rem;
    }
}

/* 导航栏 */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    transition: background var(--transition);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 20px;
    padding-right: 20px;
}

.nav-logo {
    font-size: 1.4rem;
    font-weight: 800;
    background: var(--text-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 8px;
    list-style: none;
    flex-wrap: wrap;
}

.nav-links a {
    padding: 8px 16px;
    border-radius: 50px;
    color: var(--text);
    font-size: 0.9rem;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
    background: var(--btn-gradient);
    color: #1a1a2e;
    font-weight: 600;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px 8px;
    transition: var(--transition);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-card);
        flex-direction: column;
        padding: 16px 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        box-shadow: var(--shadow);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-toggle {
        display: block;
    }
}

/* 面包屑 */
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    padding: 16px 0;
    font-size: 0.9rem;
    color: var(--text-light);
}

.breadcrumb li+li::before {
    content: '/';
    margin-right: 8px;
    color: var(--text-light);
}

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

/* Banner 轮播 */
.banner-carousel {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius);
    max-width: 1000px;
    margin: 0 auto;
}

.banner-slide {
    display: none;
    padding: 60px 40px;
    text-align: center;
    min-height: 300px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    background: var(--bg-card);
    border: var(--card-border);
    border-radius: var(--radius);
}

.banner-slide.active {
    display: flex;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.banner-slide h2 {
    font-size: 2rem;
    margin-bottom: 12px;
    background: var(--text-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.banner-slide p {
    color: var(--text-light);
    max-width: 600px;
}

.banner-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-light);
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.banner-dot.active {
    background: var(--primary);
    transform: scale(1.2);
}

/* FAQ */
.faq-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding: 16px 0;
    transition: border-color var(--transition);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.05rem;
    padding: 8px 0;
    background: none;
    border: none;
    color: var(--text);
    width: 100%;
    text-align: left;
    transition: color var(--transition);
}

.faq-question::after {
    content: '+';
    font-size: 1.4rem;
    transition: transform var(--transition), color var(--transition);
    color: var(--primary);
    flex-shrink: 0;
    margin-left: 12px;
}

.faq-item.open .faq-question::after {
    content: '−';
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding var(--transition);
    color: var(--text-light);
    padding-left: 4px;
}

.faq-item.open .faq-answer {
    max-height: 300px;
    padding-top: 12px;
    padding-bottom: 8px;
}

/* 搜索框 */
.search-box {
    display: flex;
    gap: 8px;
    max-width: 500px;
    margin: 0 auto;
}

.search-box input {
    flex: 1;
    padding: 12px 20px;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: var(--bg-card);
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.search-box input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(247, 151, 30, 0.15);
}

.search-box button {
    padding: 12px 24px;
    border-radius: 50px;
    background: var(--btn-gradient);
    border: none;
    color: #1a1a2e;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.search-box button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(247, 151, 30, 0.3);
}

/* 页脚 */
.footer {
    background: var(--bg-card);
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding: 48px 0 24px;
    transition: background var(--transition);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}

.footer-col h4 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--primary);
    font-weight: 700;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    color: var(--text-light);
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding-top: 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--text-light);
}

.footer-bottom a {
    color: var(--text-light);
    transition: var(--transition);
}

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

@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* 合作伙伴 */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 16px;
    align-items: center;
}

.partner-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: var(--bg-card);
    border-radius: 12px;
    border: var(--card-border);
    min-height: 80px;
    transition: transform var(--transition), border-color var(--transition);
}

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

/* 推荐卡片 */
.testimonial-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 32px 24px;
    border: var(--card-border);
    position: relative;
    transition: transform var(--transition), box-shadow var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-hover-shadow);
}

.testimonial-card::before {
    content: '"';
    font-size: 4rem;
    position: absolute;
    top: 8px;
    left: 16px;
    color: var(--primary);
    opacity: 0.2;
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonial-card p {
    font-style: italic;
    margin-bottom: 16px;
    color: var(--text-light);
    line-height: 1.6;
}

.testimonial-author {
    font-weight: 700;
    color: var(--text);
}

/* 使用步骤 */
.howto-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    transition: border-color var(--transition);
}

.howto-step:last-child {
    border-bottom: none;
}

.howto-step-num {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--btn-gradient);
    color: #1a1a2e;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.1rem;
}

.howto-step-content h4 {
    font-size: 1.05rem;
    margin-bottom: 4px;
}

.howto-step-content p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* 新闻卡片 */
.news-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: var(--card-border);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.news-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--card-hover-shadow);
}

.news-card-body {
    padding: 20px;
}

.news-card-body h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    line-height: 1.4;
}

.news-card-body p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.5;
}

.news-card-body .date {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 8px;
    display: block;
}

/* 联系信息 */
.contact-info p {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
    line-height: 1.6;
}

.contact-info strong {
    color: var(--text);
    min-width: 80px;
    flex-shrink: 0;
}

/* 隐藏的 Schema 数据 */
.schema-hidden {
    display: none;
}

/* 滚动动画 - 由 JavaScript 控制初始状态 */
.card,
.news-card,
.testimonial-card,
.partner-item,
.howto-step {
    will-change: opacity, transform;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* 选中文本样式 */
::selection {
    background: var(--primary);
    color: #1a1a2e;
}

/* 焦点样式 */
:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* 按钮无边框时保留焦点样式 */
.btn:focus-visible,
.nav-toggle:focus-visible,
.dark-mode-toggle:focus-visible,
.back-to-top:focus-visible,
.banner-dot:focus-visible,
.faq-question:focus-visible,
.search-box button:focus-visible,
.search-box input:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* 打印样式 */
@media print {
    .nav,
    .dark-mode-toggle,
    .back-to-top,
    .footer {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: 40px 0;
    }

    .card,
    .testimonial-card,
    .news-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }

    body {
        background: #fff;
        color: #000;
    }

    .section-title,
    .hero h1,
    .stat-number {
        -webkit-text-fill-color: #1a1a2e;
        background: none;
        color: #1a1a2e;
    }

    .badge {
        -webkit-text-fill-color: #1a1a2e;
        background: #f0f0f0;
        color: #1a1a2e;
    }
}

/* 小屏幕适配 */
@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.4rem;
    }

    .card {
        padding: 24px 16px;
    }

    .banner-slide {
        padding: 40px 20px;
        min-height: 200px;
    }

    .banner-slide h2 {
        font-size: 1.4rem;
    }

    .search-box {
        flex-direction: column;
    }

    .search-box button {
        width: 100%;
    }

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

/* 中等屏幕适配 */
@media (min-width: 769px) and (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero h1 {
        font-size: 2.8rem;
    }
}

/* 大屏幕优化 */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }

    .hero h1 {
        font-size: 3.6rem;
    }

    .section-title {
        font-size: 2.5rem;
    }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 确保 SVG 图标在卡片中正确显示 */
.card .icon-svg {
    margin-bottom: 16px;
}

/* 品牌故事区域图片样式 */
#brand-story svg {
    max-width: 100%;
    height: auto;
}

/* 表格样式（如果有） */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

th {
    font-weight: 700;
    color: var(--primary);
}

/* 代码块样式 */
code {
    background: var(--bg-card);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

pre {
    background: var(--bg-card);
    padding: 16px;
    border-radius: var(--radius);
    overflow-x: auto;
    border: var(--card-border);
}

/* 列表样式 */
ul, ol {
    padding-left: 20px;
}

li {
    margin-bottom: 4px;
}

/* 水平线 */
hr {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    margin: 24px 0;
}

/* 块引用 */
blockquote {
    border-left: 4px solid var(--primary);
    padding: 12px 20px;
    margin: 16px 0;
    background: var(--bg-card);
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--text-light);
    font-style: italic;
}

/* 确保所有交互元素有合适的触摸区域 */
@media (pointer: coarse) {
    .btn,
    .nav-links a,
    .faq-question,
    .search-box button,
    .dark-mode-toggle,
    .back-to-top {
        min-height: 44px;
    }
}