/* ============================================================
   中关村兴创特色产业园发展联盟 (SingAlliance) 官网 - 站点主样式表
   主题色：#C41230（兴创红）
   设计风格：现代高端产业园区门户
   ============================================================ */

/* ============================================================
   第一部分：CSS 自定义属性（设计令牌 / Design Tokens）
   集中管理品牌色、文字色、间距、圆角、阴影等设计变量
   ============================================================ */
:root {
    /* 品牌主色系 */
    --sa-primary: #C41230;
    --sa-primary-dark: #A00E28;
    --sa-primary-light: rgba(196, 18, 48, 0.06);
    --sa-primary-glow: rgba(196, 18, 48, 0.12);
    --sa-primary-gradient: linear-gradient(135deg, #C41230 0%, #E82040 100%);

    /* 文字颜色体系 */
    --sa-text: #1A2332;
    --sa-text-secondary: #4A5568;
    --sa-text-muted: #8C96A3;

    /* 边框与背景 */
    --sa-border: #E8EDF2;
    --sa-bg: #F5F7FA;
    --sa-white: #FFFFFF;

    /* 圆角规范 */
    --sa-radius: 16px;
    --sa-radius-sm: 8px;
    --sa-radius-xs: 4px;

    /* 阴影层级 */
    --sa-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    --sa-shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
    --sa-shadow-hover: 0 8px 32px rgba(196, 18, 48, 0.15);

    /* 导航栏高度 */
    --sa-navbar-height: 60px;

    /* 页脚深色主题背景 */
    --sa-footer-bg: #1A2332;
    --sa-footer-text: #A0aec0;
}

/* ============================================================
   第二部分：全局重置与基础样式
   包含：平滑滚动、字体栈、链接默认样式、选择高亮色
   ============================================================ */

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica,
                 Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
    color: var(--sa-text);
    background-color: var(--sa-bg);
    line-height: 1.7;
    font-size: 15px;
    overflow-x: hidden;
}

a {
    color: var(--sa-primary);
    text-decoration: none;
    transition: color 0.25s ease;
}
a:hover {
    color: var(--sa-primary-dark);
}

::selection {
    background-color: var(--sa-primary);
    color: var(--sa-white);
}

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


/* ============================================================
   第三部分：导航栏样式 (.site-navbar)
   优化版双状态设计：
     State A（默认）：半透明深红底 + 精致渐变 + 发光效果
     State B（滚动后）：白色毛玻璃 + 精致阴影 + 高级层次感
   ============================================================ */

/* ---- 导航栏基础容器 ---- */
.site-navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1050;
    padding: 10px 0;
    background: linear-gradient(135deg, rgba(120, 8, 16, 0.85) 0%, rgba(196, 18, 48, 0.75) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-navbar > .container {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
}

/* 底部发光分隔线 */
.site-navbar::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255,255,255,0.15) 20%,
        rgba(255,255,255,0.35) 50%,
        rgba(255,255,255,0.15) 80%,
        transparent 100%);
    pointer-events: none;
}

/* ---- Logo区域优化 ---- */
.site-navbar .navbar-brand {
    display: flex !important;
    align-items: center !important;
    gap: 10px;
    font-weight: 700;
    color: #fff !important;
    text-decoration: none !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0 !important;
    margin: 0 !important;
    line-height: 1 !important;
    height: auto !important;
}
.site-navbar .navbar-brand:hover {
    transform: translateY(-1px);
}

.logo-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 10px;
    backdrop-filter: blur(4px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.site-navbar .navbar-brand:hover .logo-wrapper {
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.15);
}

.nav-logo {
    height: 34px !important;
    width: auto !important;
    max-width: none !important;
    display: block !important;
    border-radius: 6px;
}

.brand-content {
    display: flex;
    align-items: center;
}

.brand-text {
    font-weight: 700;
    letter-spacing: 0.3px;
    color: #fff !important;
    font-size: 0.85rem;
    white-space: nowrap;
    line-height: 1;
}

/* ---- 导航链接：优化版 ---- */
.site-navbar .nav-link {
    color: rgba(255,255,255,0.92) !important;
    font-weight: 600;
    font-size: 0.86rem;
    padding: 7px 12px !important;
    margin: 0 2px !important;
    border-radius: 8px;
    position: relative;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    text-shadow: 0 1px 4px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
}

.nav-link-text {
    position: relative;
    z-index: 1;
}

.nav-link-indicator {
    width: 0;
    height: 2.5px;
    background: var(--sa-primary-gradient);
    border-radius: 1.5px;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

.site-navbar .nav-link:hover {
    color: #fff !important;
    background-color: rgba(255,255,255,0.12) !important;
    transform: translateY(-2px);
}

.site-navbar .nav-link:hover .nav-link-indicator {
    width: 24px;
    opacity: 1;
}

.site-navbar .nav-link.active {
    color: #fff !important;
    font-weight: 700;
    background: rgba(255,255,255,0.16) !important;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.site-navbar .nav-link.active .nav-link-indicator {
    width: 24px;
    opacity: 1;
    background: linear-gradient(90deg, #fff, rgba(255,255,255,0.7));
}



/* ---- State B：滚动后 — 高级毛玻璃浮动栏 ---- */
.site-navbar.scrolled {
    padding: 8px 0;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: 0 4px 24px rgba(0,0,0,0.08), 0 0 0 1px rgba(232,237,242,0.6);
}

/* 滚动后分隔线优化 */
.site-navbar.scrolled::after {
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(196,18,48,0.12) 30%,
        rgba(196,18,48,0.25) 50%,
        rgba(196,18,48,0.12) 70%,
        transparent 100%);
    height: 1.5px;
}

/* 滚动后Logo区域调整 */
.site-navbar.scrolled .navbar-brand,
.site-navbar.scrolled .brand-text {
    color: var(--sa-text) !important;
}

.site-navbar.scrolled .logo-wrapper {
    background: var(--sa-primary-light);
}
.site-navbar.scrolled .navbar-brand:hover .logo-wrapper {
    background: rgba(196, 18, 48, 0.12);
    box-shadow: 0 0 20px rgba(196, 18, 48, 0.15);
}

/* 滚动后导航链接调整 */
.site-navbar.scrolled .nav-link {
    color: var(--sa-text-secondary) !important;
    text-shadow: none !important;
}
.site-navbar.scrolled .nav-link:hover {
    color: var(--sa-primary) !important;
    background: var(--sa-primary-light) !important;
}
.site-navbar.scrolled .nav-link:hover .nav-link-indicator {
    background: var(--sa-primary-gradient);
}
.site-navbar.scrolled .nav-link.active {
    color: var(--sa-primary) !important;
    background: var(--sa-primary-light) !important;
}
.site-navbar.scrolled .nav-link.active .nav-link-indicator {
    background: var(--sa-primary-gradient);
}



/* ---- 导航栏占位符 ---- */
.navbar-placeholder {
    height: 56px;
}
body.nav-open {
    overflow: hidden;
}



/* ---- 始终保持横排布局（所有屏幕尺寸）---- */
.site-navbar .navbar-collapse {
    display: flex !important;
    flex-basis: auto;
    flex-grow: 1;
    align-items: center;
    justify-content: flex-end;
    padding: 0 !important;
    margin: 0 !important;
}

.site-navbar .navbar-nav {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    padding: 0 !important;
    margin: 0 !important;
    margin-left: auto !important;
    list-style: none !important;
}

.site-navbar .nav-item {
    display: flex;
    align-items: center;
    padding: 0 !important;
    margin: 0 !important;
}

/* 小屏幕适配 */
@media (max-width: 1199.98px) {
    .site-navbar .nav-link {
        font-size: 0.82rem;
        padding: 6px 10px !important;
    }
    .brand-text {
        font-size: 0.84rem;
    }
    .nav-logo {
        height: 30px !important;
    }
}

@media (max-width: 991.98px) {
    .site-navbar .nav-link {
        font-size: 0.78rem;
        padding: 5px 8px !important;
    }
    .brand-text {
        font-size: 0.8rem;
    }
    .nav-logo {
        height: 28px !important;
    }
    .logo-wrapper {
        padding: 5px;
    }
}

@media (max-width: 767.98px) {
    .site-navbar .nav-link {
        font-size: 0.74rem;
        padding: 4px 6px !important;
    }
    .nav-link-indicator {
        height: 2px;
    }
    .brand-text {
        font-size: 0.76rem;
    }
    .nav-logo {
        height: 26px !important;
    }
}

@media (max-width: 575.98px) {
    .site-navbar .nav-link {
        font-size: 0.7rem;
        padding: 4px 5px !important;
    }
    .brand-text {
        font-size: 0.72rem;
    }
    .nav-logo {
        height: 24px !important;
    }
    .logo-wrapper {
        padding: 4px;
    }
}


/* ============================================================
   第四部分：首页 Hero 大图区域 (.hero-section)
   全宽渐变背景 + 居中标题副标题 + CTA 按钮
   ============================================================ */

.hero-section {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 20px 80px;
    overflow: hidden;
    background: linear-gradient(135deg, #1A0A0E 0%, #2D0F15 30%, #C41230 80%, #E82040 100%);
}

/* 背景装饰图案（微妙的几何纹理） */
.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(196, 18, 48, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(232, 32, 64, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(160, 14, 40, 0.12) 0%, transparent 50%);
    pointer-events: none;
}

/* 网格线装饰 */
.hero-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    color: var(--sa-white);
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: 2px;
    animation: fadeInUp 0.8s ease-out both;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 36px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.15s both;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    background: var(--sa-white);
    color: var(--sa-primary);
    font-weight: 600;
    font-size: 1.05rem;
    border-radius: 50px;
    transition: all 0.3s ease;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}
.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.25);
    color: var(--sa-primary-dark);
}


/* ============================================================
   第五部分：区块标题组件 (.section-title)
   左侧红色竖条装饰 + 大号标题 + 可选副标题
   ============================================================ */

.section-title {
    position: relative;
    padding-left: 20px;
    margin-bottom: 48px;
}

.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 4px;
    background: var(--sa-primary-gradient);
    border-radius: 2px;
}

.section-title h2 {
    font-size: 2rem;
    font-weight: 750;
    color: var(--sa-text);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

.section-title p {
    font-size: 1rem;
    color: var(--sa-text-muted);
    margin-bottom: 0;
}

.section-title.text-center {
    padding-left: 0;
    text-align: center;
}
.section-title.text-center::before {
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 4px;
    top: auto;
    bottom: -12px;
    border-radius: 2px;
}


/* ============================================================
   第六部分：快捷入口卡片 (.quick-entry)
   四宫格图标卡片，悬浮上浮效果
   ============================================================ */

.quick-entry-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.quick-entry-card {
    background: var(--sa-white);
    border-radius: var(--sa-radius);
    padding: 36px 28px;
    text-align: center;
    box-shadow: var(--sa-shadow);
    border: 1px solid var(--sa-border);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}
.quick-entry-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--sa-primary-gradient);
    transform: scaleX(0);
    transition: transform 0.35s ease;
}
.quick-entry-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--sa-shadow-lg);
    border-color: transparent;
}
.quick-entry-card:hover::before {
    transform: scaleX(1);
}

.quick-entry-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: var(--sa-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.6rem;
    color: var(--sa-primary);
    transition: all 0.35s ease;
}
.quick-entry-card:hover .quick-entry-icon {
    background: var(--sa-primary-gradient);
    color: var(--sa-white);
    transform: scale(1.08);
}

.quick-entry-card h4 {
    font-size: 1.1rem;
    font-weight: 650;
    color: var(--sa-text);
    margin-bottom: 10px;
}

.quick-entry-card p {
    font-size: 0.88rem;
    color: var(--sa-text-muted);
    line-height: 1.65;
    margin-bottom: 0;
}


/* ============================================================
   第七部分：内容卡片 (.content-card)
   白底圆角卡片，带阴影与悬浮交互
   ============================================================ */

.content-card {
    background: var(--sa-white);
    border-radius: var(--sa-radius);
    padding: 32px;
    box-shadow: var(--sa-shadow);
    border: 1px solid var(--sa-border);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.content-card:hover {
    box-shadow: var(--sa-shadow-lg);
    transform: translateY(-4px);
    border-color: transparent;
}

.content-card .card-label {
    display: inline-block;
    padding: 4px 14px;
    background: var(--sa-primary-light);
    color: var(--sa-primary);
    font-size: 0.82rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 16px;
}

.content-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--sa-text);
    margin-bottom: 12px;
    line-height: 1.5;
}

.content-card p {
    color: var(--sa-text-secondary);
    font-size: 0.93rem;
    line-height: 1.75;
    margin-bottom: 0;
}


/* ============================================================
   第八部分：新闻列表项 (.news-item)
   缩略图 + 标题 + 摘要 + 日期的弹性布局
   ============================================================ */

.news-item {
    display: flex;
    gap: 24px;
    padding: 24px;
    background: var(--sa-white);
    border-radius: var(--sa-radius);
    box-shadow: var(--sa-shadow);
    border: 1px solid var(--sa-border);
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none !important;
    color: inherit !important;
}
.news-item:hover {
    box-shadow: var(--sa-shadow-lg);
    transform: translateY(-3px);
    border-color: transparent;
}

.news-thumb {
    flex-shrink: 0;
    width: 220px;
    height: 150px;
    border-radius: var(--sa-radius-sm);
    overflow: hidden;
    background: var(--sa-bg);
}
.news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.news-item:hover .news-thumb img {
    transform: scale(1.06);
}

.news-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-width: 0;
}

.news-info h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--sa-text);
    line-height: 1.5;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.25s ease;
}
.news-item:hover .news-info h3 {
    color: var(--sa-primary);
}

.news-info p {
    font-size: 0.9rem;
    color: var(--sa-text-muted);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 12px;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 0.82rem;
    color: var(--sa-text-muted);
}
.news-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}
.news-meta i {
    font-size: 0.85rem;
}


/* ============================================================
   第九部分：文章详情排版 (.article-detail)
   富文本内容的文章详情页样式
   ============================================================ */

.article-detail {
    background: var(--sa-white);
    border-radius: var(--sa-radius);
    padding: 48px;
    box-shadow: var(--sa-shadow);
    max-width: 900px;
    margin: 0 auto;
}

.article-detail .article-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--sa-border);
}

.article-detail .article-header h1 {
    font-size: 2rem;
    font-weight: 750;
    color: var(--sa-text);
    line-height: 1.4;
    margin-bottom: 20px;
}

.article-detail .article-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    font-size: 0.88rem;
    color: var(--sa-text-muted);
    flex-wrap: wrap;
}

.article-body {
    font-size: 1.02rem;
    line-height: 2;
    color: var(--sa-text-secondary);
}
.article-body p {
    margin-bottom: 20px;
}
.article-body h2,
.article-body h3,
.article-body h4 {
    color: var(--sa-text);
    font-weight: 700;
    margin-top: 32px;
    margin-bottom: 16px;
}
.article-body img {
    border-radius: var(--sa-radius-sm);
    margin: 24px 0;
    box-shadow: var(--sa-shadow);
}
.article-body blockquote {
    border-left: 4px solid var(--sa-primary);
    padding: 16px 24px;
    margin: 24px 0;
    background: var(--sa-primary-light);
    border-radius: 0 var(--sa-radius-sm) var(--sa-radius-sm) 0;
    color: var(--sa-text-secondary);
}
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
}
.article-body th,
.article-body td {
    padding: 12px 16px;
    border: 1px solid var(--sa-border);
    text-align: left;
}
.article-body th {
    background: var(--sa-bg);
    font-weight: 600;
    color: var(--sa-text);
}


/* ============================================================
   第十部分：分页组件 (.site-pagination)
   现代圆角分页样式
   ============================================================ */

.site-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 48px;
    flex-wrap: wrap;
}

.site-pagination a,
.site-pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 42px;
    height: 42px;
    padding: 0 14px;
    border-radius: var(--sa-radius-sm);
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--sa-text-secondary);
    background: var(--sa-white);
    border: 1px solid var(--sa-border);
    transition: all 0.25s ease;
    cursor: pointer;
    text-decoration: none;
}
.site-pagination a:hover {
    color: var(--sa-primary);
    border-color: var(--sa-primary);
    background: var(--sa-primary-light);
}
.site-pagination .active {
    background: var(--sa-primary-gradient);
    color: var(--sa-white) !important;
    border-color: var(--sa-primary);
    font-weight: 600;
    cursor: default;
}
.site-pagination .disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}


/* ============================================================
   第十一部分：页脚样式 (.site-footer)
   深色主题四列布局 + 底部版权栏
   ============================================================ */

.site-footer {
    background: var(--sa-footer-bg);
    color: var(--sa-footer-text);
    padding-top: 64px;
    position: relative;
}
.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--sa-primary-gradient);
}

.footer-about .footer-brand {
    display: flex;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--sa-white);
}
.footer-about .footer-brand img {
    filter: brightness(1.15);
}
.footer-desc {
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--sa-footer-text);
    margin-bottom: 20px;
}

/* 社交媒体图标 */
.footer-social {
    display: flex;
    gap: 12px;
}
.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sa-footer-text);
    font-size: 1rem;
    transition: all 0.3s ease;
}
.footer-social a:hover {
    background: var(--sa-primary);
    color: var(--sa-white);
    transform: translateY(-3px);
}

/* 页脚列标题 */
.footer-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--sa-white);
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 12px;
}
.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 32px;
    height: 3px;
    background: var(--sa-primary);
    border-radius: 2px;
}

/* 快速导航菜单 */
.footer-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-menu li {
    margin-bottom: 10px;
}
.footer-menu li a {
    color: var(--sa-footer-text);
    font-size: 0.9rem;
    transition: all 0.25s ease;
    display: inline-flex;
    align-items: center;
}
.footer-menu li a:hover {
    color: var(--sa-white);
    padding-left: 4px;
}
.footer-menu li a i {
    font-size: 0.72rem;
    opacity: 0.6;
    transition: opacity 0.25s ease;
}
.footer-menu li a:hover i {
    opacity: 1;
}

/* 联系信息列表 */
.contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.contact-list li {
    display: flex;
    gap: 14px;
    margin-bottom: 16px;
    font-size: 0.9rem;
    line-height: 1.6;
    align-items: flex-start;
}
.contact-list li i {
    color: var(--sa-primary);
    font-size: 1rem;
    margin-top: 3px;
    flex-shrink: 0;
    width: 18px;
    text-align: center;
}

/* 微信二维码区域 */
.qrcode-hint {
    font-size: 0.88rem;
    color: var(--sa-footer-text);
    margin-bottom: 20px;
    line-height: 1.7;
}
.qrcode-box {
    width: 160px;
    height: 160px;
    border-radius: var(--sa-radius-sm);
    background: var(--sa-white);
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.qrcode-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.qrcode-placeholder {
    width: 100%;
    height: 100%;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--sa-text-muted);
    background: var(--sa-bg);
    border-radius: var(--sa-radius-xs);
}
.qrcode-placeholder i {
    font-size: 2rem;
    color: var(--sa-primary);
}
.qrcode-placeholder span {
    font-size: 0.82rem;
}

/* 底部版权栏 */
.footer-bottom {
    margin-top: 48px;
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.84rem;
    color: rgba(160, 174, 192, 0.7);
}
.footer-bottom a {
    color: rgba(160, 174, 192, 0.7);
    transition: color 0.25s ease;
}
.footer-bottom a:hover {
    color: var(--sa-white);
}


/* ============================================================
   第十二部分：内页横幅 (.page-banner)
   内页面顶部横幅区域，含面包屑导航
   ============================================================ */

.page-banner {
    position: relative;
    padding: 100px 20px 60px;
    background: linear-gradient(135deg, #1A0A0E 0%, #C41230 100%);
    text-align: center;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        radial-gradient(circle at 30% 40%, rgba(196, 18, 48, 0.2), transparent 60%),
        radial-gradient(circle at 70% 60%, rgba(232, 32, 64, 0.1), transparent 60%);
    pointer-events: none;
}

.page-banner h1 {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--sa-white);
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
    margin-bottom: 0;
    padding: 0;
    background: transparent;
}
.breadcrumb-item {
    color: rgba(255, 255, 255, 0.7);
}
.breadcrumb-item a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.25s ease;
}
.breadcrumb-item a:hover {
    color: var(--sa-white);
}
.breadcrumb-item.active {
    color: var(--sa-white);
}
.breadcrumb-item + .breadcrumb-item::before {
    content: '>';
    color: rgba(255, 255, 255, 0.4);
}


/* ============================================================
   第十三部分：类型标签 (.type-tag)
   胶囊形彩色标签，用于分类标记
   ============================================================ */

.type-tag {
    display: inline-block;
    padding: 4px 14px;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 50px;
    white-space: nowrap;
    transition: all 0.25s ease;
}
.type-tag.tag-red {
    background: rgba(196, 18, 48, 0.1);
    color: var(--sa-primary);
}
.type-tag.tag-blue {
    background: rgba(59, 130, 246, 0.1);
    color: #2563EB;
}
.type-tag.tag-green {
    background: rgba(34, 197, 94, 0.1);
    color: #16A34A;
}
.type-tag.tag-orange {
    background: rgba(249, 115, 22, 0.1);
    color: #EA580C;
}
.type-tag.tag-purple {
    background: rgba(139, 92, 246, 0.1);
    color: #7C3AED;
}
.type-tag.tag-gray {
    background: rgba(0, 0, 0, 0.06);
    color: var(--sa-text-secondary);
}


/* ============================================================
   第十四部分：自定义按钮样式
   主色调渐变按钮 + 描边按钮
   ============================================================ */

.btn-sa-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 30px;
    background: var(--sa-primary-gradient);
    color: var(--sa-white);
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    white-space: nowrap;
}
.btn-sa-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(196, 18, 48, 0.35);
    color: var(--sa-white);
}
.btn-sa-primary:active {
    transform: translateY(0);
}

.btn-sa-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 30px;
    background: transparent;
    color: var(--sa-primary);
    font-weight: 600;
    font-size: 0.95rem;
    border: 2px solid var(--sa-primary);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    white-space: nowrap;
}
.btn-sa-outline:hover {
    background: var(--sa-primary);
    color: var(--sa-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(196, 18, 48, 0.2);
}

/* 尺寸变体 */
.btn-sa-primary.btn-sm,
.btn-sa-outline.btn-sm {
    padding: 8px 20px;
    font-size: 0.85rem;
}
.btn-sa-primary.btn-lg,
.btn-sa-outline.btn-lg {
    padding: 16px 40px;
    font-size: 1.05rem;
}


/* ============================================================
   第十五部分：回到顶部按钮 (.back-to-top)
   固定在右下角的圆形浮动按钮
   ============================================================ */

.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--sa-primary-gradient);
    color: var(--sa-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 16px rgba(196, 18, 48, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 28px rgba(196, 18, 48, 0.45);
}


/* ============================================================
   第十六部分：加载动画遮罩 (.sa-loading-overlay)
   全局加载状态遮罩层
   ============================================================ */

.sa-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}
.sa-loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

.sa-spinner {
    width: 44px;
    height: 44px;
    border: 4px solid var(--sa-border);
    border-top-color: var(--sa-primary);
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
}


/* ============================================================
   第十七部分：CSS 动画关键帧
   fadeInUp 淡入上滑 + spin 旋转
   ============================================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 滚动进入视口时的动画触发类 */
.animate-in {
    animation: fadeInUp 0.6s ease-out both;
}
.animate-in.delay-1 { animation-delay: 0.1s; }
.animate-in.delay-2 { animation-delay: 0.2s; }
.animate-in.delay-3 { animation-delay: 0.3s; }
.animate-in.delay-4 { animation-delay: 0.4s; }

/* 初始隐藏状态（等待 JS 触发动画）*/
[data-animate] {
    opacity: 0;
}


/* ============================================================
   第十八部分：响应式断点适配
   依次适配：大屏 / 平板 / 手机小屏 / 超小屏
   ============================================================ */

/* 大屏优化 (< 1200px) */
@media (max-width: 1199.98px) {
    .hero-title {
        font-size: 2.6rem;
    }
    .quick-entry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .news-thumb {
        width: 180px;
        height: 130px;
    }
}

/* 平板端 (< 992px) */
@media (max-width: 991.98px) {
    :root {
        --sa-navbar-height: 56px;
    }

    .hero-section {
        min-height: 480px;
        padding: 100px 20px 60px;
    }
    .hero-title {
        font-size: 2.2rem;
    }
    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title h2 {
        font-size: 1.65rem;
    }

    .article-detail {
        padding: 32px 24px;
    }
    .article-detail .article-header h1 {
        font-size: 1.6rem;
    }

    .page-banner {
        padding: 80px 20px 44px;
    }
    .page-banner h1 {
        font-size: 1.9rem;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }
}

/* 手机端 (< 768px) */
@media (max-width: 767.98px) {
    body {
        font-size: 14px;
    }

    .hero-section {
        min-height: 420px;
        padding: 90px 16px 50px;
    }
    .hero-title {
        font-size: 1.85rem;
        letter-spacing: 1px;
    }
    .hero-subtitle {
        font-size: 0.93rem;
        margin-bottom: 28px;
    }
    .hero-cta {
        padding: 12px 28px;
        font-size: 0.98rem;
    }

    .section-title {
        margin-bottom: 32px;
        padding-left: 16px;
    }
    .section-title h2 {
        font-size: 1.45rem;
    }

    .quick-entry-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .quick-entry-card {
        padding: 28px 22px;
    }

    .content-card {
        padding: 24px 20px;
    }

    /* 新闻列表移动端改为上下堆叠布局 */
    .news-item {
        flex-direction: column;
        gap: 16px;
        padding: 18px;
    }
    .news-thumb {
        width: 100%;
        height: 200px;
    }

    .article-detail {
        padding: 24px 18px;
        border-radius: var(--sa-radius-sm);
    }
    .article-detail .article-header h1 {
        font-size: 1.4rem;
    }
    .article-body {
        font-size: 0.96rem;
        line-height: 1.85;
    }

    .page-banner {
        padding: 70px 16px 36px;
    }
    .page-banner h1 {
        font-size: 1.55rem;
    }

    .site-footer {
        padding-top: 40px;
    }
    .footer-bottom {
        margin-top: 32px;
    }
    .footer-bottom .row > div {
        text-align: center !important;
    }
}

/* 超小屏 (< 480px) */
@media (max-width: 479.98px) {
    .hero-title {
        font-size: 1.55rem;
    }
    .section-title h2 {
        font-size: 1.25rem;
    }
    .page-banner h1 {
        font-size: 1.3rem;
    }
    .btn-sa-primary,
    .btn-sa-outline {
        padding: 10px 24px;
        font-size: 0.88rem;
    }
    .site-pagination a,
    .site-pagination span {
        min-width: 36px;
        height: 36px;
        font-size: 0.85rem;
        padding: 0 10px;
    }
}