/* roulang page: index */
:root {
            --brand-primary: #1E3A8A;
            --brand-secondary: #2563EB;
            --brand-accent: #06B6D4;
            --brand-amber: #F59E0B;
            --bg-canvas: #F8FAFC;
            --bg-elevated: #F1F5F9;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-soft: rgba(226, 232, 240, 0.9);
            --card-radius: 1.35rem;
            --shadow-subtle: 0 10px 25px -5px rgba(0, 0, 0, 0.04), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
            --shadow-float: 0 20px 30px -10px rgba(30, 58, 138, 0.12), 0 10px 15px -5px rgba(0, 0, 0, 0.04);
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-canvas);
            color: var(--text-body);
            line-height: 1.8;
            letter-spacing: 0.015em;
            overflow-x: hidden;
        }

        .gradient-brand {
            background: linear-gradient(135deg, #1E3A8A 0%, #2563EB 50%, #1D4ED8 100%);
        }

        .gradient-subtle {
            background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
        }

        .gradient-card {
            background: linear-gradient(145deg, #FFFFFF 0%, #F8FAFC 100%);
            border: 1px solid var(--border-soft);
        }

        .gradient-badge {
            background: linear-gradient(90deg, rgba(37, 99, 235, 0.08) 0%, rgba(6, 182, 212, 0.08) 100%);
            border: 1px solid rgba(37, 99, 235, 0.2);
        }

        .card-hover {
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-float);
            border-color: rgba(37, 99, 235, 0.35);
        }

        .slot-active {
            border-color: #2563EB;
            background-color: rgba(37, 99, 235, 0.05);
            box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
        }

        .hero-mask {
            background: linear-gradient(90deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 58, 138, 0.85) 55%, rgba(15, 23, 42, 0.75) 100%);
        }

        @keyframes pulse-subtle {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.7; transform: scale(1.05); }
        }

        .pulse-dot {
            animation: pulse-subtle 2.5s infinite ease-in-out;
        }

        /* 移动端平滑滚动与优化 */
        html {
            scroll-behavior: smooth;
        }

/* roulang page: article */
:root {
            --brand-primary: #1E3A8A;
            --brand-secondary: #2563EB;
            --brand-accent: #06B6D4;
            --brand-amber: #F59E0B;
            --bg-canvas: #F8FAFC;
            --bg-elevated: #F1F5F9;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-soft: rgba(226, 232, 240, 0.9);
            --card-radius: 1.35rem;
            --shadow-subtle: 0 10px 25px -5px rgba(0, 0, 0, 0.04), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
            --shadow-float: 0 20px 30px -10px rgba(30, 58, 138, 0.12), 0 10px 15px -5px rgba(0, 0, 0, 0.04);
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-canvas);
            color: var(--text-body);
            line-height: 1.8;
            letter-spacing: 0.015em;
            overflow-x: hidden;
        }
        .gradient-brand {
            background: linear-gradient(135deg, #1E3A8A 0%, #2563EB 50%, #1D4ED8 100%);
        }
        .gradient-card {
            background: linear-gradient(145deg, #FFFFFF 0%, #F8FAFC 100%);
            border: 1px solid var(--border-soft);
        }
        .gradient-badge {
            background: linear-gradient(90deg, rgba(37, 99, 235, 0.08) 0%, rgba(6, 182, 212, 0.08) 100%);
            border: 1px solid rgba(37, 99, 235, 0.2);
        }
        .card-hover {
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-float);
            border-color: rgba(37, 99, 235, 0.35);
        }
        .hero-mask {
            background: linear-gradient(90deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 58, 138, 0.85) 55%, rgba(15, 23, 42, 0.75) 100%);
        }
        html {
            scroll-behavior: smooth;
        }

        /* 富文本排版系统 */
        .article-content {
            color: #334155;
            font-size: 1.0625rem;
            line-height: 1.9;
        }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #0F172A;
            margin-top: 2.25rem;
            margin-bottom: 1rem;
            padding-left: 0.875rem;
            border-left: 4px solid #2563EB;
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: #1E293B;
            margin-top: 1.75rem;
            margin-bottom: 0.75rem;
            line-height: 1.5;
        }
        .article-content p {
            margin-bottom: 1.35rem;
            text-align: justify;
        }
        .article-content blockquote {
            background-color: #F1F5F9;
            border-left: 4px solid #06B6D4;
            padding: 1rem 1.25rem;
            margin: 1.5rem 0;
            border-radius: 0 0.75rem 0.75rem 0;
            color: #475569;
            font-style: italic;
        }
        .article-content ul, .article-content ol {
            margin: 1rem 0 1.5rem 1.5rem;
            list-style-type: disc;
        }
        .article-content li {
            margin-bottom: 0.5rem;
        }
        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: 1rem;
            margin: 1.75rem auto;
            display: block;
            box-shadow: var(--shadow-subtle);
        }
        .article-content strong {
            color: #0F172A;
            font-weight: 600;
        }

/* roulang page: category1 */
:root {
            --brand-primary: #1E3A8A;
            --brand-secondary: #2563EB;
            --brand-accent: #06B6D4;
            --brand-amber: #F59E0B;
            --bg-canvas: #F8FAFC;
            --bg-elevated: #F1F5F9;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-soft: rgba(226, 232, 240, 0.9);
            --card-radius: 1.35rem;
            --shadow-subtle: 0 10px 25px -5px rgba(0, 0, 0, 0.04), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
            --shadow-float: 0 20px 30px -10px rgba(30, 58, 138, 0.12), 0 10px 15px -5px rgba(0, 0, 0, 0.04);
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-canvas);
            color: var(--text-body);
            line-height: 1.8;
            letter-spacing: 0.015em;
            overflow-x: hidden;
        }
        .gradient-brand {
            background: linear-gradient(135deg, #1E3A8A 0%, #2563EB 50%, #1D4ED8 100%);
        }
        .gradient-card {
            background: linear-gradient(145deg, #FFFFFF 0%, #F8FAFC 100%);
            border: 1px solid var(--border-soft);
        }
        .gradient-badge {
            background: linear-gradient(90deg, rgba(37, 99, 235, 0.08) 0%, rgba(6, 182, 212, 0.08) 100%);
            border: 1px solid rgba(37, 99, 235, 0.2);
        }
        .card-hover {
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-float);
            border-color: rgba(37, 99, 235, 0.35);
        }
        .hero-mask {
            background: linear-gradient(90deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 58, 138, 0.85) 55%, rgba(15, 23, 42, 0.75) 100%);
        }
        html {
            scroll-behavior: smooth;
        }