/* ---------- 1. CSS 变量（设计令牌） ---------- */
:root {
    /* 品牌色 */
    --color-navy: #003366;
    --color-navy-light: #1a4c7a;
    --color-navy-dark: #002244;
    --color-red: #C8102E;
    --color-red-light: #e31b3d;
    /* 中性色 */
    --color-white: #ffffff;
    --color-gray-50: #f8f9fa;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    /* 字体 */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-serif: 'Playfair Display', 'Noto Serif SC', serif;
    /* 间距（8px 基准） */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 80px;
    --spacing-4xl: 120px;
    /* 圆角 */
    /*--radius-sharp:0px;
    --radius-sm: 2px;
    --radius-btn: 4px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --radius-xl: 14px;
    */ 
    --radius-sharp: 0px;
    --radius-sm: 0px;
    --radius-btn: 0px;
    --radius-md: 0px;
    --radius-lg: 0px;
    --radius-xl: 0px;
    /* 阴影（轻微，保持通透感） */
    /*--shadow-card: 0 2px 8px rgba(0, 51, 102, 0.06);
    --shadow-card-hover: 0 8px 24px rgba(0, 51, 102, 0.10);*/
    --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.04);
    --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.06);
    --shadow-dropdown: 0 4px 16px rgba(0, 0, 0, 0.08);
    /* 过渡 */
    --transition-base: 0.25s ease;
    --transition-smooth: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.icon-red {color: var(--color-red);}
.icon-navy {color: var(--color-navy);}
.icon-white {color: var(--color-white);}
.icon-gray {color: var(--color-gray-400);}

/* ---------- 2. 全局重置 & 基础 ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-gray-800);
    background-color: var(--color-white);
}

/* ---------- 3. 排版系统 ---------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--color-navy);
    line-height: 1.3;
}
h1, h2, h3 {
    font-family: 'Times New Roman', 'Songti SC', 'Noto Serif SC', serif;
    letter-spacing: 0.02em;
}

h1 {
    font-size: 40px;
    font-weight: 900;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 36px;
    font-weight: 800;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 28px;
}

h4 {
    font-size: 18px;
}

@media (max-width: 768px) {
    h1 {
        font-size: 28px;
    }

    h2 {
        font-size: 22px;
    }

    h3 {
        font-size: 18px;
    }
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-600);
    line-height: 1.8;
}

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

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

.stat-number {
    font-family: var(--font-serif);
}
/* ---------- 4. 容器 & 布局 ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-3xl) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04); /* 新增：极淡的灰色边框 */
}
    /* 最后一个 section 不需要边框 */
    .section:last-of-type {
        border-bottom: none;
    }

    /* 如果某个 section 有背景色（如 bg-gray-50），边框颜色可以稍微深一点点 */
    .bg-gray-50.section,
    .section.bg-gray-50 {
        border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    }

.section-sm {
    padding: var(--spacing-xl) 0;
}

.section-lg {
    padding: var(--spacing-4xl) 0;
}

/* section-title */
.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title h2 {
    position: relative;
    display: inline-block;
    padding-bottom: var(--spacing-sm);
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 48px;
    height: 3px;
    background: var(--color-red);
    border-radius: 2px;
}

.section-title p {
    margin-top: var(--spacing-sm);
    color: var(--color-gray-500);
    font-size: 18px;
}
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-header-left .section-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-red);
    background: rgba(200, 16, 46, 0.06);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.section-header-left h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-navy);
    margin: 0;
}

.section-header-left p {
    font-size: 16px;
    color: var(--color-gray-500);
    margin: 4px 0 0;
}

.section-header-right .arrow {
    display: inline-block;
    transition: transform 0.3s ease;
}

.section-header-right .btn-outline:hover .arrow {
    transform: translateX(4px);
}

/* ---------- 5. 按钮 ---------- */
.btn {
    display: inline-block;
    padding: 12px 30px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
}

.btn-primary {
    background: var(--color-navy);
    color: var(--color-white);
}

.btn-primary:hover {
    background: var(--color-navy-light);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 51, 102, 0.20);
}
.btn-compact {
    padding: 4px 14px;
    font-size: 12px;
    line-height: 1.4;
}

.btn-partner {
    background: transparent;
    color: var(--color-navy);
    border: 2px solid var(--color-navy);
    padding: 8px 20px; /* 与 btn-sm 一致 */
    font-size: 13px; /* 与 btn-sm 一致 */
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    line-height: 1.5; /* 明确行高，与免费评估保持一致 */
}

.btn-partner:hover {
    background: var(--color-navy);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 51, 102, 0.20);
}

.btn-outline {
    background: transparent;
    color: var(--color-navy);
    border: 2px solid var(--color-navy);
}

    .btn-outline:hover {
        background: var(--color-navy);
        color: var(--color-white);
        transform: translateY(-2px);
    }

/* ---- 浅色边框按钮（用于深色背景） ---- */
.btn-outline-light {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.40);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.10);
    color: var(--color-white);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

.btn-red {
    background: var(--color-red);
    color: var(--color-white);
}

.btn-red:hover {
    background: var(--color-red-light);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(200, 16, 46, 0.25);
}

.btn-sm {
    padding: 8px 20px;
    font-size: 13px;
}

.btn-lg {
    padding: 16px 35px;
    font-size: 18px;
}

/* ---------- 6. 卡片系统（信息密集型模块使用） ---------- */
.card {
    background: var(--color-white);
    border-radius: var(--radius-sharp);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-smooth);
    overflow: hidden;
}

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

.card-body {
    padding: var(--spacing-md);
}

.card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: var(--spacing-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-text {
    font-size: 14px;
    color: var(--color-gray-500);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 卡片标签 */
.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.card-tag {
    padding: 2px 12px;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-navy);
    background: var(--color-gray-100);
    border-radius: 20px;
}

.card-tag-red {
    background: rgba(200, 16, 46, 0.10);
    color: var(--color-red);
}

/* 卡片元数据 */
.card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xs);
    font-size: 13px;
    color: var(--color-gray-400);
}

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

/* ---------- 7. 网格系统 ---------- */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

@media (max-width: 992px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* ---------- 8. 工具类 ---------- */
.text-center {
    text-align: center;
}

.text-navy {
    color: var(--color-navy);
}

.text-red {
    color: var(--color-red);
}

.text-gray {
    color: var(--color-gray-500);
}

.text-white {
    color: var(--color-white);
}

.bg-navy {
    background: var(--color-navy);
}

.bg-gray-50 {
    background: var(--color-gray-50);
}

.bg-white {
    background: var(--color-white);
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mt-xl {
    margin-top: var(--spacing-xl);
}

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mb-xl {
    margin-bottom: var(--spacing-xl);
}

.relative {
    position: relative;
}

.flex {
    display: flex;
}

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

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.w-full {
    width: 100%;
}

.h-full {
    height: 100%;
}

/* ---------- 9. 响应式图片 ---------- */
.img-fluid {
    max-width: 100%;
    height: auto;
    display: block;
}

.img-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ---------- 10. 滚动条（保持简洁） ---------- */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--color-gray-300);
    border-radius: 3px;
}

    ::-webkit-scrollbar-thumb:hover {
        background: var(--color-gray-400);
    }



/* ========================================
   底部菜单栏样式
   ======================================== */

.site-footer {
    background: var(--color-navy-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-3xl) 0 var(--spacing-md);
    margin-top: 0;
    /* 如果还有 1px 白线 */
    border-top: none;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    justify-items: end; /* 后三列整体靠右对齐 */
}

/* 品牌区域 */
/* ---- Footer 品牌区域增强 ---- */
/* 品牌列单独靠左 */
.footer-brand {
    justify-self: start;
}
.footer-brand .footer-logo {
    display: inline-block;
    margin-bottom: var(--spacing-lg);
}

/* 装饰线 - 左→右渐变透明 */
.footer-brand-divider {
    width: 64px;
    height: 4px;
    background: linear-gradient(to right, var(--color-red), transparent);
    margin-bottom: var(--spacing-md);
}

/* 品牌标题 */
.footer-brand-title {
    font-family: var(--font-serif);
    font-size: 26px;
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

    .footer-brand-title .text-red {
        color: var(--color-red);
    }

/* 英文 Slogan */
.footer-brand-slogan {
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.45);
    max-width: 320px;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

/* 社交媒体（保留原有样式，略微调整） */
.footer-social {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xs);
}

    .footer-social a {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.08);
        color: rgba(255, 255, 255, 0.6);
        transition: all var(--transition-base);
    }

        .footer-social a:hover {
            background: var(--color-red);
            color: var(--color-white);
            transform: translateY(-2px);
        }

        /* ---- Footer 公众号二维码弹层 ---- */

        /* 公众号链接作为定位锚点 */
        .footer-social a.footer-wechat-official {
            position: relative;
            overflow: visible;
        }

            /* 悬停时保持位置稳定（覆盖 .footer-social a:hover 的 translateY） */
            .footer-social a.footer-wechat-official:hover {
                transform: none;
            }

        /* ---- Footer 公众号二维码弹层 ---- */

        /* 锚点：让弹层相对图标定位 */
        .footer-social a.footer-wechat-official {
            position: relative !important;
            overflow: visible !important;
        }

            /* 悬停时图标不上浮，避免拖动弹层 */
            .footer-social a.footer-wechat-official:hover {
                transform: none !important;
            }

/* ===== 弹层完整定义（独立，不依赖基础 .wechat-qr-popup） ===== */
.wechat-qr-popup-up {
    position: absolute !important;
    bottom: calc(100% + 12px) !important;
    top: auto !important;
    left: 50% !important;
    right: auto !important;
    width: max-content !important;
    min-width: 172px !important;
    padding: var(--spacing-sm) !important;
    background: var(--color-white) !important;
    border: 1px solid var(--color-gray-100) !important;
    box-shadow: var(--shadow-dropdown) !important;
    text-align: center !important;
    box-sizing: border-box !important;
    white-space: nowrap !important;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(-50%) translateY(6px);
    transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
    z-index: 100 !important;
}

.wechat-qr-popup-up {
    top: calc(100% + 4px) !important; /* ★ 从 bottom 改为 top */
    bottom: auto !important; /* ★ 取消 bottom */
    left: 50% !important;
    transform: translateX(-50%) translateY(-6px) !important; /* ★ 入场方向改为从下往上 */
    /* 其他属性保持不变 */
}

    .wechat-qr-popup-up::before {
        top: -8px !important; /* ★ 从 bottom 改为 top */
        bottom: auto !important;
        border-bottom: 8px solid var(--color-white) !important; /* ★ 朝上的三角 */
        border-top: none !important;
        border-left: 8px solid transparent !important;
        border-right: 8px solid transparent !important;
        /* 其他属性保持不变 */
    }

/* 显示触发时的 transform 也要改 */
.footer-wechat-official:hover .wechat-qr-popup-up,
.footer-wechat-official.active .wechat-qr-popup-up,
.footer-wechat-official:focus-within .wechat-qr-popup-up {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    transform: translateX(-50%) translateY(0) !important;
}


/* ---- 响应式 ---- */
@media (max-width: 768px) {
    .footer-brand-title {
        font-size: 22px;
    }

    .footer-brand-slogan {
        font-size: 10px;
        letter-spacing: 0.15em;
    }

    .footer-social a {
        width: 32px;
        height: 32px;
    }

        .footer-social a svg {
            width: 18px;
            height: 18px;
        }
}

@media (max-width: 480px) {
    .footer-brand-title {
        font-size: 20px;
    }
}

/* 链接区域 */
.footer-links h4,
.footer-contact h4 {
    color: var(--color-white);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer-links ul,
.footer-contact ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

    .footer-links ul li,
    .footer-contact ul li {
        margin-bottom: var(--spacing-xs);
    }

        .footer-links ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color var(--transition-base);
        }

            .footer-links ul li a:hover {
                color: var(--color-white);
            }

    /* 联系方式 */
    .footer-contact ul li {
        font-size: 13px;
        color: rgba(255, 255, 255, 0.6);
        line-height: 1.6;
        margin-bottom: var(--spacing-sm);
    }

        .footer-contact ul li strong {
            color: rgba(255, 255, 255, 0.8);
            font-weight: 600;
        }

.footer-wechat {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

    .footer-wechat img {
        border-radius: var(--radius-sharp);
        border: 2px solid rgba(255, 255, 255, 0.1);
    }

    .footer-wechat span {
        font-size: 13px;
        color: rgba(255, 255, 255, 0.5);
    }

/* 版权信息 */
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

    .footer-bottom .divider {
        margin: 0 var(--spacing-sm);
    }

    .footer-bottom a {
        color: rgba(255, 255, 255, 0.4);
        transition: color var(--transition-base);
    }

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

/* ========================================
   底部菜单栏 - 响应式
   ======================================== */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
        justify-items: start;
    }
    .footer-brand, .footer-contact {
        grid-column: 1 / -1;
    }
}

@media (max-width: 600px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg) var(--spacing-md);
        justify-items: start;
    }
    .footer-brand, .footer-contact {
        grid-column: 1 / -1;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-xs);
        text-align: center;
    }
}

/* ========================================
   双行导航样式
   ======================================== */

/* ---- 第一行：深蓝顶栏 ---- */
/* ========================================
   第一行：深蓝顶栏（双行左文案）
   ======================================== */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1001;
    background: var(--color-navy-dark);
    color: rgba(255, 255, 255, 0.7);
    min-height: 52px; /* 增加高度，适应双行 */
    display: flex;
    align-items: center;
    font-size: 13px;
    transition: transform 0.4s ease, opacity 0.3s ease;
    padding: 6px 0;
}

    .top-bar.hidden {
        transform: translateY(-100%);
        opacity: 0;
    }

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    gap: var(--spacing-md);
}

/* ---- 左侧：双行品牌文案 ---- */
.top-bar-left {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 0; /* 防止溢出 */
}

.top-bar-brand {
    display: flex;
    flex-direction: column;
    line-height: 1.4;
}

/* ---- 顶栏公众号二维码（悬停/点击展开） ---- */
.top-bar-wechat {
    position: relative;
    display: inline-block;
}

/* 二维码弹层 */
.wechat-qr-popup {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) translateY(-6px);
    padding: var(--spacing-sm);
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    box-shadow: var(--shadow-dropdown);
    text-align: center;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
    z-index: 10;
    white-space: nowrap;
}

    .wechat-qr-popup img {
        width: 140px;
        height: 140px;
        display: block;
        object-fit: contain;
    }

.wechat-qr-label {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--color-gray-500);
    letter-spacing: .3px;
}

/* 顶部小三角，指向"公众号"链接 */
.wechat-qr-popup::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 10px;
    height: 10px;
    background: var(--color-white);
    border-left: 1px solid var(--color-gray-100);
    border-top: 1px solid var(--color-gray-100);
}

/* 三种显示触发：hover / 点击固定 / 键盘聚焦 */
.top-bar-wechat:hover .wechat-qr-popup,
.top-bar-wechat.active .wechat-qr-popup,
.top-bar-wechat:focus-within .wechat-qr-popup {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

/* 链接本身保持与其它 top-bar-link 一致的样式 */
.top-bar-wechat .top-bar-link {
    cursor: pointer;
}

.brand-line-1 {
    font-weight: 700; /* 第一行加粗 */
    color: var(--color-white);
    font-size: 14px;
    letter-spacing: 0.3px;
}

.brand-line-2 {
    font-weight: 400; /* 第二行正常 */
    color: rgba(255, 255, 255, 0.55);
    font-size: 12px;
    letter-spacing: 0.2px;
}

/* ---- 右侧：导航链接（保持不变） ---- */
.top-bar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}

.top-bar-link {
    color: rgba(255, 255, 255, 0.6);
    font-size: 12px;
    transition: color var(--transition-base);
    padding: 0 4px;
}

    .top-bar-link:hover {
        color: var(--color-white);
    }

.top-bar-divider {
    color: rgba(255, 255, 255, 0.15);
    font-size: 12px;
}

/* ---- 移动端适配 ---- */
@media (max-width: 991px) {
    .top-bar {
        display: none; /* 移动端隐藏顶栏 */
    }
}

@media (max-width: 1200px) {
    .brand-line-1 {
        font-size: 13px;
    }

    .brand-line-2 {
        font-size: 11px;
    }

    .top-bar-link {
        font-size: 11px;
    }
}

/* ---- 第二行：白底主菜单 ---- */
.site-header {
    position: fixed;
    top: 52px; /* 紧贴顶栏下方 */
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-white);
    color: var(--color-gray-800);
    height: 72px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    transition: top 0.4s ease, box-shadow 0.3s ease;
}

    /* 顶栏隐藏后，主菜单上移贴顶 */
    .site-header.top-bar-hidden {
        top: 0;
    }

    /* 滚动后加阴影 */
    .site-header.header-scrolled {
        box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    }

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

/* ---- Logo（彩色版） ---- */
.logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

    .logo img {
        height: 65px;
        width: auto;
    }

/* ---- 导航菜单（白底深色文字） ---- */
.nav-list {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 18px;
    color: var(--color-gray-700);
    font-size: 15px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    white-space: nowrap;
}

    .nav-link:hover {
        /*color: var(--color-navy);*/
        color: var(--color-red);
        background: var(--color-gray-50);
    }

.nav-item.active .nav-link {
    /*color: var(--color-navy);*/
    color: var(--color-red);
    font-weight: 600;
    background: var(--color-gray-50);
}

.nav-arrow {
    transition: transform var(--transition-base);
    opacity: 0.5;
    color: var(--color-gray-400);
}

.nav-item:hover .nav-arrow {
    transform: rotate(180deg);
}

/* ---- 下拉菜单（白底） ---- */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    min-width: 200px;
    background: var(--color-white);
    border-radius: var(--radius-sharp);
    box-shadow: var(--shadow-dropdown);
    padding: var(--spacing-xs) 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
    list-style: none;
    border: 1px solid var(--color-gray-100);
}

    .dropdown-menu::before {
        content: '';
        position: absolute;
        top: -12px;
        left: 0;
        right: 0;
        height: 12px;
        background: transparent;
        pointer-events: auto;
    }

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu li a {
    display: block;
    padding: 8px 20px;
    color: var(--color-gray-600);
    font-size: 14px;
    font-weight: 400;
    transition: all var(--transition-base);
}

    .dropdown-menu li a:hover {
        background: var(--color-gray-50);
        color: var(--color-navy);
    }

    .dropdown-menu li a.active {
        color: var(--color-red);
        font-weight: 600;
    }

/* ---- 右侧操作区 ---- */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.btn-assessment {
    padding: 8px 20px;
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius-md);
    background: var(--color-red);
    color: var(--color-white);
    transition: all var(--transition-base);
}

.btn-assessment:hover {
    background: var(--color-red-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(200, 16, 46, 0.30);
    color: var(--color-white);
}

/* ---- 移动端汉堡菜单 ---- */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

    .menu-toggle span {
        display: block;
        width: 24px;
        height: 2px;
        background: var(--color-gray-700);
        border-radius: 2px;
        transition: all var(--transition-base);
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle[aria-expanded="true"] span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

/* ========================================
   双行导航 - 移动端响应式
   ======================================== */
@media (max-width: 991px) {
    /* 移动端隐藏顶栏（或精简） */
    .top-bar {
        display: none;
    }

    .site-header {
        top: 0;
        height: 64px;
        background: var(--color-white);
    }

    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-white);
        padding: var(--spacing-md);
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform var(--transition-smooth);
        z-index: 999;
        border-top: 1px solid var(--color-gray-100);
    }

        .nav-menu.nav-open {
            transform: translateX(0);
        }

    .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        width: 100%;
    }

    .nav-item {
        border-bottom: 1px solid var(--color-gray-100);
    }

    .nav-link {
        padding: 14px 0;
        font-size: 17px;
        justify-content: space-between;
        color: var(--color-gray-700);
    }

        .nav-link:hover {
            background: none;
            color: var(--color-navy);
        }

    .nav-item.active .nav-link {
        background: none;
        color: var(--color-navy);
    }

    .dropdown-menu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        background: var(--color-gray-50);
        border-radius: var(--radius-md);
        padding: 0;
        display: none;
        border: none;
    }

        .dropdown-menu::before {
            display: none;
        }

        .dropdown-menu li a {
            padding: 10px 16px;
            color: var(--color-gray-600);
            font-size: 15px;
        }

            .dropdown-menu li a:hover {
                background: var(--color-gray-100);
                color: var(--color-navy);
            }

    .nav-item:hover .dropdown-menu {
        transform: none;
    }

    .logo img {
        height: 60px;
    }

    .btn-assessment,
    .btn-partner {
        font-size: 13px;
        padding: 6px 14px;
    }
}


@media (max-width: 480px) {
    .site-header {
        height: 60px;
    }

    .nav-menu {
        top: 60px;
    }

    .logo img {
        height: 36px;
    }

    .btn-assessment,
    .btn-partner {
        font-size: 12px;
        padding: 4px 10px;
    }
}

/* ========================================
   频道 Banner 样式（复用首页样式 + 频道特色）
   ======================================== */

.channel-hero {
    position: relative;
    min-height: 480px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: #003366;
}

.channel-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

    .channel-hero-bg img,
    .channel-hero-bg video {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

.channel-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    background: linear-gradient(135deg, rgba(0, 34, 68, 0.70) 0%, rgba(0, 51, 102, 0.50) 100%);
}

.channel-hero-content {
    position: relative;
    z-index: 3;
    width: 100%;
    min-height: 480px;
    display: flex;
    align-items: center;
    padding: 120px 16px 60px 16px; /* 原 padding: 60px 16px */
}

.channel-hero-text {
    color: #ffffff;
    max-width: 680px;
}

.channel-hero-badge {
    display: inline-block;
    padding: 4px 16px;
    font-size: 13px;
    font-weight: 600;
    color: #ffffff;
    background: rgba(200, 16, 46, 0.40);
    border-radius: 20px;
    margin-bottom: 12px;
}

.channel-hero-text h1 {
    color: #ffffff;
    font-size: 38px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 12px;
}

.channel-hero-desc {
    color: rgba(255, 255, 255, 0.85);
    font-size: 17px;
    line-height: 1.7;
    max-width: 580px;
    margin-bottom: 24px;
}

.channel-hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.about-hero-right {
    flex-shrink: 0;
    margin-left: auto; /* 将自身推到父容器最右侧 */
}

.hero-mission-card {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 24px;
    backdrop-filter: blur(4px);
    max-width: 280px;
    text-align: center;
}

.mission-icon {
    font-size: 36px;
    display: block;
    margin-bottom: 12px;
}

.mission-text {
    font-size: 18px;
    font-weight: 600;
    color: #ffffff;
    line-height: 1.6;
    margin-bottom: 12px;
}

.mission-author {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

    .channel-hero-actions .btn-outline-light {
        background: transparent;
        color: #ffffff;
        border: 2px solid rgba(255, 255, 255, 0.40);
    }

        .channel-hero-actions .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: #ffffff;
        }

/* ---- 响应式 ---- */
@media (max-width: 768px) {
    .channel-hero {
        min-height: 360px;
    }

    .channel-hero-content {
        min-height: 360px;
        padding: 90px 16px 40px 16px; /* 原 padding: 40px 16px */
    }

    .channel-hero-text h1 {
        font-size: 28px;
    }

    .channel-hero-desc {
        font-size: 15px;
        max-width: 100%;
    }

    .channel-hero-stats {
        gap: 20px;
        flex-wrap: wrap;
    }

        .channel-hero-stats .hero-stat-number {
            font-size: 22px;
        }

    .channel-hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .channel-hero {
        min-height: 420px;
    }

    .channel-hero-content {
        min-height: 420px;
        padding: 80px 12px 30px 12px; /* 原 padding: 30px 12px */
    }

    .channel-hero-text h1 {
        font-size: 22px;
    }

    .channel-hero-desc {
        font-size: 14px;
    }

    .channel-hero-badge {
        font-size: 11px;
        padding: 2px 12px;
    }

    .channel-hero-actions .btn {
        font-size: 14px;
        padding: 10px 20px;
        width: 100%;
        text-align: center;
    }
}

/* ========================================
   CTA 转化区（统一样式）
   ======================================== */

.cta-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, #002244 0%, #003366 60%, #1a4c7a 100%);
    color: var(--color-white);
}

/* 网格布局：左文右二维码 */
.cta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 120px; /* ★ 加大左右间距 */
    align-items: center;
    max-width: 1100px; /* ★ 稍微放宽，容纳更大的二维码 */
    margin: 0 auto;
}

/* ---- 左列：文案 ---- */
.cta-left h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}

.cta-divider {
    width: 48px;
    height: 3px;
    background: var(--color-red);
    border-radius: 2px;
    margin: var(--spacing-sm) 0;
}

.cta-left p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.8;
    max-width: 420px;
    margin-bottom: var(--spacing-md);
}

.cta-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* ---- 右列：二维码 ---- */
.cta-right {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* ★ 单码模式：二维码放大 ★ */
.cta-qr-single {
    text-align: center;
}

    .cta-qr-single img {
        width: 200px; 
        height: 200px;
        border-radius: var(--radius-sharp);
        background: var(--color-white);
        padding: 10px;
        box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
        transition: transform var(--transition-base);
    }

        .cta-qr-single img:hover {
            transform: scale(1.04);
        }

    .cta-qr-single .qr-label {
        display: block;
        margin-top: var(--spacing-sm);
        font-size: 14px; /* ★ 标签文字略微放大 */
        font-weight: 600;
        color: rgba(255, 255, 255, 0.70);
        letter-spacing: 0.5px;
    }

/* ★ 三码模式：二维码放大 ★ */
.cta-qr-multi {
    display: flex;
    gap: var(--spacing-xl); /* ★ 三码之间间距加大 */
    justify-content: center;
}

.cta-qr-item {
    text-align: center;
}

    .cta-qr-item img {
        width: 140px; /* ★ 从 100px 放大到 140px */
        height: 140px;
        border-radius: var(--radius-sharp);
        background: var(--color-white);
        padding: 8px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.20);
        transition: transform var(--transition-base);
    }

        .cta-qr-item img:hover {
            transform: scale(1.04);
        }

    .cta-qr-item .qr-label {
        display: block;
        margin-top: var(--spacing-xs);
        font-size: 13px; /* ★ 标签文字略微放大 */
        font-weight: 500;
        color: rgba(255, 255, 255, 0.55);
        letter-spacing: 0.3px;
    }

/* ---- 响应式 ---- */
@media (max-width: 992px) {
    .cta-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 60px; /* ★ 移动端间距缩小，保持舒适 */
    }

    .cta-left p {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .cta-divider {
        margin-left: auto;
        margin-right: auto;
    }

    .cta-actions {
        justify-content: center;
    }

    .cta-qr-single img {
        width: 160px;
        height: 160px;
    }

    .cta-qr-multi {
        gap: var(--spacing-md);
        flex-wrap: wrap;
    }

    .cta-qr-item img {
        width: 110px;
        height: 110px;
    }
}

@media (max-width: 480px) {
    .cta-left h2 {
        font-size: 22px;
    }

    .cta-left p {
        font-size: 14px;
    }

    .cta-grid {
        gap: 36px;
    }

    .cta-qr-single img {
        width: 140px;
        height: 140px;
    }

    .cta-qr-multi {
        gap: var(--spacing-sm);
    }

    .cta-qr-item img {
        width: 90px;
        height: 90px;
    }

    .cta-qr-item .qr-label {
        font-size: 11px;
    }

    .cta-actions .btn {
        width: 100%;
        text-align: center;
    }
}

.nav-link-highlight {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.highlight-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-red);
    flex-shrink: 0;
    opacity: 0.6;
    transition: all var(--transition-base);
}

.nav-link-highlight:hover .highlight-dot {
    opacity: 1;
    transform: scale(1.2);
}


/* ---- 图片放大弹窗 ---- */
.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    z-index: 99999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

    .image-modal .modal-content {
        max-width: 90%;
        max-height: 90%;
        object-fit: contain;
        border-radius: var(--radius-sharp, 0px);
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    }

    .image-modal .modal-close {
        position: absolute;
        top: 24px;
        right: 32px;
        font-size: 40px;
        font-weight: 300;
        color: rgba(255, 255, 255, 0.6);
        cursor: pointer;
        transition: all var(--transition-base);
        line-height: 1;
        z-index: 10;
    }

        .image-modal .modal-close:hover {
            color: var(--color-white);
            transform: rotate(90deg);
        }

@media (max-width: 768px) {
    .image-modal .modal-close {
        top: 16px;
        right: 20px;
        font-size: 32px;
    }
}



/* 浮动客服组件 - 位于页面右下角 */
.floating-chat-wrapper {
    position: fixed;
    bottom: 40%;
    right: 30px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

/* --- 悬浮按钮 --- */
.chat-toggle-btn {
    position: relative;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    border: none;
    background: var(--color-red, #C8102E);
    color: #ffffff;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(200, 16, 46, 0.35);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

    .chat-toggle-btn:hover {
        transform: scale(1.05);
        box-shadow: 0 6px 24px rgba(200, 16, 46, 0.45);
    }

    .chat-toggle-btn:active {
        transform: scale(0.95);
    }

.chat-icon {
    width: 28px;
    height: 28px;
    stroke-width: 1.8;
}

.chat-tooltip {
    position: absolute;
    right: 70px;
    background: #1e293b;
    color: #ffffff;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 13px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    pointer-events: none;
}

    .chat-tooltip::after {
        content: '';
        position: absolute;
        right: -6px;
        top: 50%;
        transform: translateY(-50%);
        border-left: 6px solid #1e293b;
        border-top: 6px solid transparent;
        border-bottom: 6px solid transparent;
    }

.chat-toggle-btn:hover .chat-tooltip {
    opacity: 1;
    visibility: visible;
}

/* --- 移动端适配 --- */
@media (max-width: 768px) {
    .floating-chat-wrapper {
        bottom: 20px;
        right: 20px;
    }

    .chat-panel {
        width: 260px;
    }

    .chat-toggle-btn {
        width: 54px;
        height: 54px;
    }

    .chat-icon {
        width: 24px;
        height: 24px;
    }

    .chat-tooltip {
        display: none;
    }
}

/* ============================================================
   全局咨询浮窗
   ============================================================ */

.consult-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.consult-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.50);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.consult-modal-content {
    position: relative;
    background: var(--color-white);
    max-width: 400px;
    width: 100%;
    padding: var(--spacing-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    animation: consultModalIn 0.3s ease;
}

@keyframes consultModalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(16px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.consult-modal-close {
    position: absolute;
    top: 12px;
    right: 14px;
    background: none;
    border: none;
    color: var(--color-gray-400);
    cursor: pointer;
    padding: 4px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

    .consult-modal-close:hover {
        color: var(--color-navy);
        transform: rotate(90deg);
    }

.consult-modal-body {
    text-align: center;
}

.consult-modal-text {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-navy);
    margin: 0 0 var(--spacing-md);
    line-height: 1.6;
}

.consult-modal-qr {
    background: var(--color-white);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    display: inline-block;
}

    .consult-modal-qr img {
        width: 180px;
        height: 180px;
        display: block;
    }

.consult-modal-btn {
    display: inline-block;
    padding: 10px 28px;
    background: var(--color-red);
    color: var(--color-white);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

    .consult-modal-btn:hover {
        background: var(--color-red-light);
        color: var(--color-white);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(200, 16, 46, 0.20);
    }

/* ---- 响应式 ---- */
@media (max-width: 480px) {
    .consult-modal {
        padding: var(--spacing-md);
    }

    .consult-modal-content {
        padding: var(--spacing-lg);
        max-width: 340px;
    }

    .consult-modal-text {
        font-size: 15px;
    }

    .consult-modal-qr img {
        width: 150px;
        height: 150px;
    }

    .consult-modal-btn {
        font-size: 13px;
        padding: 8px 20px;
    }
}



/* ============================================================
   统一筛选区域样式（适用于所有频道）
   ============================================================ */

/* ---- 筛选卡片容器 ---- */
.showcase-filter-wrapper,
.internships-filter-wrapper {
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    padding: 20px 24px;
    margin-bottom: 28px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

/* ---- 当前筛选状态 ---- */
.current-filter {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 14px;
    padding: 10px 18px;
    background: var(--color-gray-50);
    border-left: 3px solid var(--color-red);
    margin-bottom: 16px;
    font-size: 14px;
}

    .current-filter .filter-label {
        font-weight: 600;
        color: var(--color-navy);
        margin-right: 4px;
    }

    .current-filter .filter-tag {
        color: var(--color-gray-600);
        background: var(--color-white);
        padding: 2px 12px;
        border: 1px solid var(--color-gray-200);
        font-size: 13px;
    }

    .current-filter .clear-filter {
        margin-left: auto;
        color: var(--color-gray-400);
        font-size: 13px;
        text-decoration: none;
        transition: color 0.2s;
        padding: 2px 8px;
    }

        .current-filter .clear-filter:hover {
            color: var(--color-red);
            background: rgba(200, 16, 46, 0.04);
        }

/* ---- 快捷入口行 ---- */
.quick-filters-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 4px;
    padding: 4px 0 10px 0;
    border-bottom: 1px solid var(--color-gray-100);
    margin-bottom: 10px;
}

    .quick-filters-row:last-of-type {
        border-bottom: none;
        margin-bottom: 0;
        padding-bottom: 0;
    }

.quick-filters-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-gray-400);
    min-width: 40px;
    margin-right: 6px;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.quick-filter-tag {
    display: inline-block;
    padding: 4px 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-gray-500);
    background: transparent;
    border-radius: 20px;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

    .quick-filter-tag:hover {
        background: var(--color-gray-100);
        color: var(--color-navy);
    }

    .quick-filter-tag.active {
        color: var(--color-white);
        background: var(--color-navy);
    }

        .quick-filter-tag.active:hover {
            background: var(--color-navy-light);
        }

/* ---- 筛选栏 ---- */
.showcase-filter,
.internships-filter {
    padding-top: 4px;
}

.filter-form .filter-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.filter-group {
    flex: 1;
    min-width: 140px;
}

.filter-group-search {
    flex: 2.5;
    min-width: 200px;
}

.filter-group .form-control {
    width: 100%;
    padding: 9px 14px;
    border: 1px solid var(--color-gray-200);
    font-size: 14px;
    background: var(--color-white);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    border-radius: 0;
    height: 42px;
}

    .filter-group .form-control:focus {
        outline: none;
        border-color: var(--color-navy);
        box-shadow: 0 0 0 3px rgba(0, 51, 102, 0.05);
    }

    .filter-group .form-control::placeholder {
        color: var(--color-gray-300);
    }

.filter-actions {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

.btn-filter {
    padding: 0 28px;
    font-size: 14px;
    font-weight: 500;
    height: 42px;
    line-height: 42px;
    border-radius: 0;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    cursor: pointer;
    transition: all 0.25s ease;
    border: 1px solid transparent;
    text-decoration: none;
}

    .btn-filter.btn-primary {
        background: var(--color-navy);
        color: var(--color-white);
        border-color: var(--color-navy);
    }

        .btn-filter.btn-primary:hover {
            background: var(--color-navy-light);
            border-color: var(--color-navy-light);
        }

    .btn-filter.btn-outline {
        background: transparent;
        color: var(--color-navy);
        border-color: var(--color-gray-300);
    }

        .btn-filter.btn-outline:hover {
            background: var(--color-gray-50);
            border-color: var(--color-gray-400);
        }

/* ---- 响应式 ---- */
@media (max-width: 768px) {
    .showcase-filter-wrapper,
    .internships-filter-wrapper {
        padding: 14px 14px;
        margin-bottom: 16px;
    }

    .current-filter {
        font-size: 13px;
        padding: 8px 12px;
        gap: 4px 8px;
    }

        .current-filter .filter-tag {
            font-size: 12px;
            padding: 1px 8px;
        }

    .quick-filters-row {
        padding: 2px 0 8px 0;
        margin-bottom: 8px;
    }

    .quick-filters-label {
        font-size: 11px;
        min-width: 32px;
    }

    .quick-filter-tag {
        font-size: 12px;
        padding: 2px 10px;
    }

    .filter-group {
        min-width: 100%;
    }

    .filter-group-search {
        min-width: 100%;
        flex: 1 1 100%;
    }

    .filter-actions {
        width: 100%;
        gap: 8px;
    }

    .btn-filter {
        flex: 1;
        padding: 0 16px;
        height: 40px;
        line-height: 40px;
        font-size: 13px;
    }

    .filter-group .form-control {
        height: 40px;
        padding: 7px 12px;
        font-size: 13px;
    }

    .current-filter .clear-filter {
        margin-left: 0;
        width: 100%;
        text-align: right;
    }
}

@media (max-width: 480px) {
    .showcase-filter-wrapper,
    .internships-filter-wrapper {
        padding: 10px 10px;
        margin-bottom: 12px;
    }

    .quick-filter-tag {
        font-size: 11px;
        padding: 2px 8px;
    }

    .quick-filters-label {
        font-size: 10px;
        min-width: 28px;
    }
}



/* ============================================================
   全局侧边栏广告组件
   ============================================================ */

/* ---- 外层容器（与 .sidebar-card 同级） ---- */
.sidebar-ad-wrapper {
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

/* ---- 图片/视频区域（满格显示） ---- */
.sidebar-ad-media-wrapper {
    width: 100%;
    overflow: hidden;
    background: var(--color-gray-100);
}

.sidebar-ad-media {
    width: 100%;
    height: auto;
    max-height: 180px;
    object-fit: cover;
    display: block;
}

/* ---- 文字内容区域（保留内边距） ---- */
.sidebar-ad-body {
    padding: var(--spacing-md);
    background: var(--color-white);
}

    .sidebar-ad-body h4 {
        font-size: 16px;
        font-weight: 700;
        color: var(--color-navy);
        margin: 0 0 4px;
    }

    .sidebar-ad-body p {
        font-size: 14px;
        color: var(--color-gray-500);
        margin: 0 0 8px;
        line-height: 1.6;
    }

.sidebar-ad-btn {
    display: inline-block;
    padding: 4px 16px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-red);
    border: 1px solid var(--color-red);
    transition: all var(--transition-base);
}

.sidebar-ad-link:hover .sidebar-ad-btn {
    background: var(--color-red);
    color: var(--color-white);
}



/* ---- 三列网格及卡片 ---- */
.col3-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 100%;
    margin: 0 auto;
}

/* ---- 卡片 ---- */
.col3-card {
    position: relative;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    padding: 40px 32px 36px;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    display: flex;
    flex-direction: column;
    min-height: 200px;
}

    .col3-card:hover {
        transform: translateY(-6px);
        box-shadow: 0 12px 40px rgba(0, 0, 0, 0.04);
        border-color: var(--color-gray-300);
    }

/* ---- 装饰线 ---- */
.col3-card-line {
    width: 40px;
    height: 4px;
    background: var(--color-gray-300);
    margin-bottom: 16px;
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.col3-card:hover .col3-card-line {
    width: 64px;
    background: var(--color-red);
}

/* ---- 标题 ---- */
.col3-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-navy);
    font-family: var(--font-serif);
    margin: 0 0 4px;
    transition: color 0.3s ease;
}

.col3-card:hover h3 {
    color: var(--color-red);
}

/* ---- 副标题 ---- */
.col3-card-sub {
    font-size: 14px;
    color: var(--color-gray-500);
    margin: 0 0 16px;
    line-height: 1.5;
}

/* ---- 列表 ---- */
.col3-features {
    list-style: none;
    padding: 0;
    margin: 0;
    flex: 1;
}

    .col3-features li {
        font-size: 14px;
        color: var(--color-gray-600);
        line-height: 1.7;
        padding: 4px 0 4px 20px;
        position: relative;
        transition: color 0.3s ease;
    }

        .col3-features li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 12px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-red);
            opacity: 0.25;
            transition: opacity 0.3s ease;
        }

.col3-card:hover .col3-features li::before {
    opacity: 0.6;
}

.col3-card:hover .col3-features li {
    color: var(--color-gray-700);
}

/* ---- 角标数字 ---- */
.col3-card-number {
    position: absolute;
    bottom: 12px;
    right: 16px;
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 900;
    color: var(--color-gray-100);
    line-height: 1;
    transition: all 0.5s ease;
    user-select: none;
    pointer-events: none;
}

.col3-card:hover .col3-card-number {
    color: rgba(200, 16, 46, 0.08);
    transform: scale(1.04);
}

/* ---- 图片区域（保持不变） ---- */
.col3-image-stack {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.col3-image-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-100);
    overflow: hidden;
    transition: all var(--transition-smooth);
}

    .col3-image-card:hover {
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
        transform: translateY(-4px);
        border-color: var(--color-gray-200);
    }

.col3-image-wrapper {
    background: var(--color-gray-50);
    padding: 40px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

    .col3-image-wrapper img {
        width: 100%;
        max-height: 100%;
        object-fit: contain;
        transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

.col3-image-card:hover .col3-image-wrapper img {
    transform: scale(1.02);
}

.col3-image-caption {
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
    text-align: center;
}

    .col3-image-caption h4 {
        font-size: 18px;
        font-weight: 700;
        color: var(--color-navy);
        margin: 0 0 var(--spacing-sm);
    }

.caption-line {
    width: 48px;
    height: 2px;
    background: var(--color-red);
    margin: 0 auto;
    transition: width var(--transition-smooth);
}

.col3-image-card:hover .caption-line {
    width: 72px;
}

/* ============================================================
   响应式
   ============================================================ */

@media (max-width: 992px) {
    .col3-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .col3-card {
        padding: 28px 24px 24px;
        min-height: auto;
    }

        .col3-card h3 {
            font-size: 18px;
        }

    .col3-card-number {
        font-size: 24px;
        bottom: 8px;
        right: 12px;
    }

    .col3-image-wrapper {
        padding: 30px 16px;
    }
}

@media (max-width: 768px) {
    .col3-grid {
        grid-template-columns: 1fr;
        gap: 12px;
        max-width: 100%;
    }

    .col3-card {
        padding: 24px 20px 20px;
        min-height: auto;
    }

        .col3-card h3 {
            font-size: 18px;
        }

    .col3-card-number {
        font-size: 22px;
    }

    .col3-card-line {
        width: 32px;
        height: 4px;
        margin-bottom: 12px;
    }

    .col3-card:hover .col3-card-line {
        width: 48px;
    }

    .col3-features li {
        font-size: 13px;
    }

    .col3-image-wrapper {
        padding: 20px 12px;
        aspect-ratio: 16 / 10;
    }

        .col3-image-wrapper img {
            width: 80%;
        }

    .col3-image-caption {
        padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
    }

        .col3-image-caption h4 {
            font-size: 16px;
        }
}

@media (max-width: 480px) {
    .col3-card {
        padding: 18px 16px 16px;
    }

        .col3-card h3 {
            font-size: 16px;
        }

    .col3-card-sub {
        font-size: 13px;
        margin-bottom: 12px;
    }

    .col3-card-number {
        font-size: 18px;
        bottom: 6px;
        right: 10px;
    }

    .col3-features li {
        font-size: 13px;
        padding: 3px 0 3px 16px;
    }

        .col3-features li::before {
            width: 5px;
            height: 5px;
            top: 10px;
        }

    .col3-image-wrapper {
        padding: 16px 10px;
        aspect-ratio: 4 / 3;
    }

        .col3-image-wrapper img {
            width: 90%;
        }

    .col3-image-caption {
        padding: var(--spacing-xs) var(--spacing-sm) var(--spacing-sm);
    }

        .col3-image-caption h4 {
            font-size: 14px;
        }
}