body {
            background-color: #f5f6f8;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

    
        /* ===== 页面主体 ===== */
        .page-wrapper {
            flex: 1;
            max-width: 1160px;
            margin: 0 auto;
            padding: 28px 24px 60px;
            width: 100%;
        }

        /* ===== 文章容器（宽度1000px） ===== */
        .article-container {
            max-width: var(--content-width);
            margin: 0 auto;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px 10px;
            font-size: 13px;
            color: #7a8b9c;
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: #5e6f7e;
            text-decoration: none;
            transition: color 0.2s;
        }

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

        .breadcrumb .sep {
            color: #d0d7de;
        }

        .breadcrumb .current {
            color: #0b1a2b;
            font-weight: 500;
        }

        .breadcrumb .category-highlight {
            background: var(--primary-soft);
            color: var(--primary-dark);
            padding: 1px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            border: 1px solid rgba(101, 181, 48, 0.15);
        }

        /* ===== 案例分类导航（水平胶囊） ===== */
        .category-nav {
            background: #ffffff;
            border-radius: var(--card-radius);
            box-shadow: var(--shadow-sm);
            padding: 14px 24px;
            margin-bottom: 28px;
            border: 1px solid var(--border-light);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px 14px;
        }

        .category-nav .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 18px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 500;
            color: #3d4e5e;
            background: #f0f2f5;
            text-decoration: none;
            transition: all 0.2s ease;
            border: 1px solid transparent;
        }

        .category-nav .cat-link .cat-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            flex-shrink: 0;
        }

        .category-nav .cat-link .cat-dot.c1 {
            background: #65B530;
        }
        .category-nav .cat-link .cat-dot.c2 {
            background: #4A90D9;
        }
        .category-nav .cat-link .cat-dot.c3 {
            background: #E67E22;
        }
        .category-nav .cat-link .cat-dot.c4 {
            background: #8E44AD;
        }
        .category-nav .cat-link .cat-dot.c5 {
            background: #E74C3C;
        }

        .category-nav .cat-link .cat-count {
            font-size: 11px;
            color: #8b9aab;
            font-weight: 400;
            background: rgba(0, 0, 0, 0.04);
            padding: 0 8px;
            border-radius: 20px;
            line-height: 18px;
        }

        .category-nav .cat-link:hover {
            background: var(--primary-soft);
            border-color: var(--primary);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .category-nav .cat-link.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(101, 181, 48, 0.28);
        }

        .category-nav .cat-link.active .cat-count {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
        }

        .category-nav .cat-link.active .cat-dot {
            box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
        }

        /* ===== 案例主体卡片 ===== */
        .article-card {
            background: #ffffff;
            border-radius: var(--card-radius);
            box-shadow: var(--shadow-sm);
            padding: 40px 48px 44px;
            border: 1px solid var(--border-light);
        }

        /* ===== 案例头部 ===== */
        .article-header {
            margin-bottom: 26px;
        }

        .article-meta-top {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px 16px;
            margin-bottom: 12px;
        }

        .article-meta-top .cat-badge {
            background: var(--primary-soft);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 14px;
            border-radius: 30px;
            border: 1px solid rgba(101, 181, 48, 0.18);
        }

        .article-meta-top .status-badge {
            background: #fff6e5;
            color: #b9770e;
            font-size: 12px;
            font-weight: 600;
            padding: 2px 14px;
            border-radius: 30px;
            border: 1px solid rgba(185, 119, 14, 0.2);
        }

        .article-title {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            color: #0b1a2b;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        /* 案例元信息 - 项目关键数据 */
        .project-meta {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            gap: 12px 20px;
            background: var(--primary-bg);
            border-radius: 12px;
            padding: 16px 24px;
            margin-top: 14px;
            border: 1px solid rgba(101, 181, 48, 0.12);
        }

        .project-meta .pm-item {
            display: flex;
            flex-direction: column;
        }

        .project-meta .pm-item .pm-label {
            font-size: 11px;
            color: #7a8b9c;
            text-transform: uppercase;
            letter-spacing: 0.4px;
            font-weight: 600;
        }

        .project-meta .pm-item .pm-value {
            font-size: 15px;
            font-weight: 600;
            color: #0b1a2b;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px 22px;
            font-size: 14px;
            color: #5e6f7e;
            margin-top: 16px;
        }

        .article-meta .meta-author {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .article-meta .avatar-sm {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            font-size: 14px;
            flex-shrink: 0;
        }

        .article-meta .author-name {
            font-weight: 600;
            color: #1e2a3a;
        }

        .article-meta .meta-divider {
            color: #d0d7de;
        }

        .article-meta .meta-date,
        .article-meta .meta-read {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .article-meta .meta-date svg,
        .article-meta .meta-read svg {
            width: 16px;
            height: 16px;
            fill: none;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        /* ===== 案例特色图 ===== */
        .article-featured-image {
            margin-bottom: 32px;
            border-radius: 14px;
            overflow: hidden;
            background: #eef2f6;
            aspect-ratio: 16 / 9;
            display: flex;
            align-items: center;
            justify-content: center;
            background-image: linear-gradient(135deg, #d4e4ca 0%, #c0d6b0 100%);
            color: #2d4a1a;
            font-weight: 500;
            position: relative;
        }

        .article-featured-image .placeholder-content {
            text-align: center;
            padding: 20px;
        }

        .article-featured-image .placeholder-content .icon {
            font-size: 48px;
            display: block;
            margin-bottom: 8px;
        }

        .article-featured-image .placeholder-content .label {
            background: rgba(255, 255, 255, 0.80);
            backdrop-filter: blur(4px);
            padding: 6px 24px;
            border-radius: 40px;
            border: 1px solid rgba(255, 255, 255, 0.5);
            font-size: 14px;
            letter-spacing: 0.3px;
        }

        /* ===== 正文 ===== */
        .article-body {
            font-size: 16.5px;
            color: #1a2634;
        }

        .article-body .dropcap::first-letter {
            float: left;
            font-size: 3.6em;
            line-height: 1;
            font-weight: 700;
            color: var(--primary);
            margin-right: 10px;
            margin-top: 2px;
            font-family: Georgia, "Times New Roman", serif;
        }

        .article-body p {
            margin-bottom: 22px;
        }

        .article-body p:last-of-type {
            margin-bottom: 0;
        }

        .article-body strong {
            color: #0b1a2b;
            font-weight: 600;
        }

        .article-body .highlight-block {
            background: var(--primary-bg);
            border-left: 4px solid var(--primary);
            padding: 18px 24px;
            border-radius: 0 12px 12px 0;
            margin: 30px 0;
        }

        .article-body .highlight-block p {
            margin-bottom: 0;
            font-size: 15.5px;
        }

        .article-body .highlight-block strong {
            color: var(--primary-dark);
        }

        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            margin: 38px 0 14px;
            color: #0b1a2b;
            letter-spacing: -0.3px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--primary-light);
        }

        .article-body h3 {
            font-size: 19px;
            font-weight: 600;
            margin: 28px 0 12px;
            color: #0b1a2b;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 22px 24px;
            padding-left: 4px;
        }

        .article-body li {
            margin-bottom: 6px;
        }

        /* 案例成果数据 */
        .result-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin: 30px 0 24px;
        }

        .result-grid .result-item {
            background: var(--primary-bg);
            border-radius: 12px;
            padding: 18px 12px;
            text-align: center;
            border: 1px solid rgba(101, 181, 48, 0.10);
        }

        .result-grid .result-item .num {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .result-grid .result-item .num .unit {
            font-size: 16px;
            font-weight: 600;
        }

        .result-grid .result-item .label {
            font-size: 13px;
            color: #5e6f7e;
            margin-top: 2px;
        }

        /* ===== 标签 ===== */
        .article-tags {
            margin-top: 36px;
            padding-top: 22px;
            border-top: 1px solid var(--border-light);
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .article-tags .tag {
            background: #f0f2f5;
            color: #3d4e5e;
            font-size: 13px;
            padding: 3px 16px;
            border-radius: 30px;
            transition: all 0.2s ease;
            text-decoration: none;
            font-weight: 500;
        }

        .article-tags .tag:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 负责人名片（底部卡片） ===== */
        .author-card-bottom {
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 24px;
            background: var(--primary-bg);
            border-radius: var(--card-radius);
            padding: 28px 32px;
            border: 1px solid rgba(101, 181, 48, 0.12);
            flex-wrap: wrap;
        }

        .author-card-bottom .author-avatar-lg {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            font-weight: 700;
            flex-shrink: 0;
            box-shadow: 0 4px 20px rgba(101, 181, 48, 0.25);
            border: 3px solid #fff;
        }

        .author-card-bottom .author-info {
            flex: 1;
            min-width: 160px;
        }

        .author-card-bottom .author-info .name {
            font-size: 18px;
            font-weight: 700;
            color: #0b1a2b;
        }

        .author-card-bottom .author-info .title {
            font-size: 14px;
            color: var(--text-muted);
        }

        .author-card-bottom .author-info .bio {
            font-size: 14px;
            color: #5e6f7e;
            margin-top: 4px;
            line-height: 1.6;
        }

        .author-card-bottom .author-info .bio a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
        }

        .author-card-bottom .author-info .bio a:hover {
            text-decoration: underline;
        }

        .author-card-bottom .author-social-links {
            display: flex;
            gap: 8px;
            margin-top: 10px;
        }

        .author-card-bottom .author-social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #fff;
            color: var(--primary-dark);
            text-decoration: none;
            transition: all 0.25s ease;
            font-size: 15px;
            border: 1px solid var(--border-light);
        }

        .author-card-bottom .author-social-links a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(101, 181, 48, 0.25);
            border-color: var(--primary);
        }

        .author-card-bottom .author-stats-mini {
            display: flex;
            gap: 24px;
            flex-shrink: 0;
        }

        .author-card-bottom .author-stats-mini .stat {
            text-align: center;
        }

        .author-card-bottom .author-stats-mini .stat .num {
            font-size: 18px;
            font-weight: 700;
            color: #0b1a2b;
            display: block;
            line-height: 1.2;
        }

        .author-card-bottom .author-stats-mini .stat .label {
            font-size: 12px;
            color: #7a8b9c;
        }

        /* ===== 相关案例 ===== */
        .related-section {
            margin-top: 44px;
            padding-top: 28px;
            border-top: 1px solid var(--border-light);
        }

        .related-section .related-title {
            font-size: 18px;
            font-weight: 700;
            color: #0b1a2b;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .related-grid .related-item {
            background: #f8fafc;
            border-radius: 12px;
            padding: 16px 18px 18px;
            transition: all 0.25s ease;
            border: 1px solid transparent;
            text-decoration: none;
            color: inherit;
            display: block;
        }

        .related-grid .related-item:hover {
            background: #ffffff;
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(101, 181, 48, 0.10);
        }

        .related-grid .related-item .related-item-title {
            font-weight: 600;
            font-size: 14px;
            color: #0b1a2b;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.5;
        }

        .related-grid .related-item .related-item-meta {
            font-size: 12px;
            color: #7a8b9c;
            margin-top: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-grid .related-item .related-item-meta .dot {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: #d0d7de;
        }



        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-container {
                max-width: 100%;
            }
        }

        @media (max-width: 768px) {
            .navbar-inner {
                height: 54px;
                padding: 0 16px;
            }

            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 54px;
                left: 0;
                right: 0;
                background: #ffffff;
                padding: 16px 20px 22px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
                gap: 12px;
                align-items: flex-start;
            }

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

            .nav-links a {
                font-size: 15px;
            }

            .dropdown-menu {
                position: static;
                box-shadow: none;
                border: none;
                padding: 4px 0 0 16px;
                opacity: 1;
                visibility: visible;
                transform: none;
                background: transparent;
                display: none;
            }

            .nav-dropdown:hover .dropdown-menu {
                display: block;
            }

            .nav-actions .subscribe-btn {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }

            .page-wrapper {
                padding: 16px 12px 40px;
            }

            .category-nav {
                padding: 12px 16px;
                gap: 6px 10px;
                border-radius: 12px;
                margin-bottom: 20px;
            }

            .category-nav .cat-link {
                font-size: 12px;
                padding: 3px 14px;
            }

            .article-card {
                padding: 22px 16px 28px;
                border-radius: 14px;
            }

            .article-title {
                font-size: 26px;
            }

            .project-meta {
                grid-template-columns: repeat(2, 1fr);
                padding: 14px 18px;
                gap: 10px;
            }

            .project-meta .pm-item .pm-value {
                font-size: 14px;
            }

            .article-meta {
                font-size: 13px;
                gap: 10px 16px;
            }

            .article-body {
                font-size: 15px;
            }

            .article-body .dropcap::first-letter {
                font-size: 3em;
            }

            .article-body h2 {
                font-size: 20px;
            }

            .article-body h3 {
                font-size: 17px;
            }

            .article-featured-image {
                aspect-ratio: 16 / 10;
            }

            .result-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .result-grid .result-item .num {
                font-size: 22px;
            }

            .author-card-bottom {
                flex-direction: column;
                text-align: center;
                padding: 24px 20px;
                gap: 16px;
            }

            .author-card-bottom .author-stats-mini {
                width: 100%;
                justify-content: center;
            }

            .author-card-bottom .author-social-links {
                justify-content: center;
            }

            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

        }

        @media (max-width: 480px) {
            .article-card {
                padding: 16px 12px 22px;
            }

            .article-title {
                font-size: 22px;
            }

            .article-meta {
                font-size: 12px;
                gap: 6px 12px;
            }

            .article-meta .avatar-sm {
                width: 28px;
                height: 28px;
                font-size: 12px;
            }

            .breadcrumb {
                font-size: 12px;
                gap: 4px 8px;
            }

            .article-body {
                font-size: 14px;
            }

            .article-body h2 {
                font-size: 18px;
            }

            .article-body h3 {
                font-size: 16px;
            }

            .article-body .highlight-block {
                padding: 14px 18px;
                margin: 22px 0;
            }

            .article-tags .tag {
                font-size: 12px;
                padding: 2px 12px;
            }

            .author-card-bottom .author-avatar-lg {
                width: 60px;
                height: 60px;
                font-size: 22px;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .category-nav .cat-link .cat-count {
                display: none;
            }

            .project-meta {
                grid-template-columns: 1fr 1fr;
                padding: 12px 14px;
            }

            .project-meta .pm-item .pm-value {
                font-size: 13px;
            }

            .result-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .result-grid .result-item {
                padding: 14px 8px;
            }

            .result-grid .result-item .num {
                font-size: 20px;
            }
        }