/* roulang page: index */
:root {
            --bg-primary: #070b14;
            --bg-secondary: #0d1220;
            --bg-card: #111827;
            --bg-panel: #151d2e;
            --bg-hover: #1a2340;
            --bg-sidebar: #090e1a;
            --text-primary: #e8edf5;
            --text-secondary: #9aa4b8;
            --text-muted: #6b7280;
            --accent-gold: #f0a500;
            --accent-gold-light: #fcc44c;
            --accent-orange: #e8751a;
            --accent-red: #e53e3e;
            --accent-cyan: #22d3bb;
            --border-color: #1e293b;
            --border-glow: rgba(240, 165, 0, 0.25);
            --border-glow-strong: rgba(240, 165, 0, 0.5);
            --shadow-card: 0 4px 28px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(240, 165, 0, 0.12);
            --shadow-elevated: 0 8px 40px rgba(0, 0, 0, 0.6);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --sidebar-width: 250px;
            --header-height: 64px;
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent-gold);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        input,
        textarea {
            font-family: inherit;
            outline: none;
        }

        /* ============ SIDEBAR NAVIGATION ============ */
        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            border-right: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 28px 20px 20px;
            transition: transform var(--transition), box-shadow var(--transition);
            overflow-y: auto;
            overflow-x: hidden;
        }
        .sidebar-nav .logo-area {
            margin-bottom: 36px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-nav .logo-area .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            color: var(--accent-gold);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-nav .logo-area .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-orange) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.1rem;
            color: #0a0e17;
            flex-shrink: 0;
        }
        .sidebar-nav .nav-menu {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }
        .sidebar-nav .nav-menu li a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 11px 16px;
            border-radius: var(--radius);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .sidebar-nav .nav-menu li a i {
            width: 20px;
            text-align: center;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .sidebar-nav .nav-menu li a:hover {
            background: var(--bg-hover);
            color: var(--text-primary);
        }
        .sidebar-nav .nav-menu li a.active {
            background: linear-gradient(135deg, rgba(240, 165, 0, 0.15) 0%, rgba(232, 117, 26, 0.1) 100%);
            color: var(--accent-gold);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--accent-gold);
            border-radius: var(--radius);
        }
        .sidebar-nav .nav-menu li a.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--accent-gold);
            border-radius: 0 3px 3px 0;
        }
        .sidebar-nav .sidebar-footer {
            margin-top: auto;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            font-size: 0.78rem;
            color: var(--text-muted);
            text-align: center;
            white-space: nowrap;
        }

        /* ============ MAIN CONTENT AREA ============ */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-width: 0;
            transition: margin-left var(--transition);
        }

        /* ============ MOBILE HEADER ============ */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--header-height);
            background: var(--bg-sidebar);
            border-bottom: 1px solid var(--border-color);
            z-index: 999;
            align-items: center;
            padding: 0 20px;
            justify-content: space-between;
        }
        .mobile-header .mobile-logo {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--accent-gold);
        }
        .mobile-header .hamburger {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            font-size: 1.3rem;
            border: 1px solid var(--border-color);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.7);
            z-index: 998;
        }
        .sidebar-overlay.show {
            display: block;
        }

        /* ============ SECTIONS ============ */
        .section {
            padding: 60px 40px;
        }
        .section-sm {
            padding: 40px 40px;
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
            color: var(--text-primary);
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 36px;
        }
        .section-header {
            margin-bottom: 40px;
            text-align: center;
        }
        .section-header .badge-row {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 165, 0, 0.08);
            border: 1px solid var(--border-glow);
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 0.8rem;
            color: var(--accent-gold);
            font-weight: 500;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        /* ============ HERO ============ */
        .hero-section {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            padding: 60px 40px;
            background: linear-gradient(160deg, #090e1a 0%, #0d1425 40%, #111c30 100%);
            overflow: hidden;
        }
        .hero-bg-img {
            position: absolute;
            right: -60px;
            top: 50%;
            transform: translateY(-50%);
            width: 55%;
            max-width: 700px;
            opacity: 0.35;
            pointer-events: none;
            mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.9) 30%, rgba(0, 0, 0, 0.1) 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.9) 30%, rgba(0, 0, 0, 0.1) 100%);
        }
        .hero-section .hero-content {
            position: relative;
            z-index: 2;
            max-width: 580px;
        }
        .hero-section .hero-badge {
            display: inline-block;
            background: rgba(240, 165, 0, 0.12);
            border: 1px solid var(--border-glow-strong);
            color: var(--accent-gold-light);
            padding: 7px 18px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.05em;
            margin-bottom: 20px;
        }
        .hero-section h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }
        .hero-section h1 .highlight {
            color: var(--accent-gold);
        }
        .hero-section .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.6;
            max-width: 460px;
        }
        .hero-section .hero-stats {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }
        .hero-section .hero-stat {
            text-align: center;
        }
        .hero-section .hero-stat .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-gold);
            font-family: var(--font-mono);
            letter-spacing: 0.02em;
        }
        .hero-section .hero-stat .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ============ BUTTONS ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.02em;
            cursor: pointer;
            border: 1px solid transparent;
        }
        .btn-gold {
            background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-orange) 100%);
            color: #0a0e17;
            border: none;
            box-shadow: 0 4px 18px rgba(240, 165, 0, 0.3);
        }
        .btn-gold:hover {
            box-shadow: 0 6px 26px rgba(240, 165, 0, 0.45);
            transform: translateY(-2px);
            color: #0a0e17;
        }
        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--border-glow-strong);
            color: var(--accent-gold);
        }
        .btn-outline:hover {
            background: rgba(240, 165, 0, 0.08);
            border-color: var(--accent-gold);
            color: var(--accent-gold-light);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 15px 34px;
            font-size: 1.05rem;
        }

        /* ============ CARDS ============ */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card), var(--shadow-glow);
            transform: translateY(-3px);
        }
        .card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .card .card-icon.gold {
            background: rgba(240, 165, 0, 0.12);
            color: var(--accent-gold);
        }
        .card .card-icon.cyan {
            background: rgba(34, 211, 187, 0.12);
            color: var(--accent-cyan);
        }
        .card .card-icon.red {
            background: rgba(229, 62, 62, 0.12);
            color: var(--accent-red);
        }
        .card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }
        .card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ============ COVER CARD (分类入口) ============ */
        .cover-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: all var(--transition);
            cursor: pointer;
            display: block;
            color: inherit;
        }
        .cover-card:hover {
            border-color: var(--border-glow-strong);
            box-shadow: var(--shadow-elevated);
            transform: translateY(-4px);
            color: inherit;
        }
        .cover-card .cover-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--bg-panel);
        }
        .cover-card .cover-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .cover-card:hover .cover-img-wrap img {
            transform: scale(1.06);
        }
        .cover-card .cover-body {
            padding: 20px;
        }
        .cover-card .cover-body h3 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .cover-card .cover-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        /* ============ STATS PANEL (HUD) ============ */
        .hud-panel {
            background: var(--bg-panel);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-around;
        }
        .hud-stat {
            text-align: center;
            min-width: 90px;
        }
        .hud-stat .hud-value {
            font-size: 2.2rem;
            font-weight: 800;
            font-family: var(--font-mono);
            color: var(--accent-gold);
            letter-spacing: 0.03em;
            line-height: 1.1;
        }
        .hud-stat .hud-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .hud-divider {
            width: 1px;
            height: 48px;
            background: var(--border-color);
            flex-shrink: 0;
        }

        /* ============ NEWS LIST ============ */
        .news-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .news-list li a {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            transition: all var(--transition-fast);
            color: inherit;
        }
        .news-list li a:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
            background: var(--bg-hover);
            color: inherit;
        }
        .news-list .news-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            white-space: nowrap;
            font-family: var(--font-mono);
            min-width: 80px;
        }
        .news-list .news-title {
            flex: 1;
            font-weight: 500;
            font-size: 0.95rem;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .news-list .news-cat {
            font-size: 0.75rem;
            background: rgba(240, 165, 0, 0.1);
            color: var(--accent-gold);
            padding: 4px 12px;
            border-radius: 50px;
            white-space: nowrap;
            font-weight: 500;
        }
        .news-empty {
            text-align: center;
            padding: 40px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* ============ FAQ ============ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-glow);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-arrow {
            transition: transform var(--transition-fast);
            font-size: 0.7rem;
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .faq-item[open] summary .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent-gold);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            background: linear-gradient(135deg, #111827 0%, #151d2e 50%, #0d1425 100%);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            margin: 40px;
            padding: 50px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(240, 165, 0, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            font-size: 0.95rem;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            border-top: 1px solid var(--border-color);
            padding: 32px 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .site-footer .footer-brand {
            font-weight: 700;
            color: var(--accent-gold);
            font-size: 1rem;
        }
        .site-footer .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .site-footer .footer-links a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
            font-size: 0.85rem;
        }
        .site-footer .footer-links a:hover {
            color: var(--accent-gold);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .sidebar-nav {
                width: 220px;
            }
            :root {
                --sidebar-width: 220px;
            }
            .section {
                padding: 44px 28px;
            }
            .section-sm {
                padding: 32px 28px;
            }
            .hero-section {
                padding: 44px 28px;
                min-height: 420px;
            }
            .hero-section h1 {
                font-size: 2.2rem;
            }
            .cta-section {
                margin: 28px;
                padding: 36px 28px;
            }
            .hero-bg-img {
                width: 50%;
                right: -40px;
                opacity: 0.28;
            }
        }
        @media (max-width: 768px) {
            body {
                flex-direction: column;
            }
            .sidebar-nav {
                transform: translateX(-100%);
                width: 260px;
                box-shadow: var(--shadow-elevated);
            }
            .sidebar-nav.open {
                transform: translateX(0);
            }
            .sidebar-overlay.show {
                display: block;
            }
            .main-content {
                margin-left: 0;
                padding-top: var(--header-height);
            }
            .mobile-header {
                display: flex;
            }
            .hero-section {
                flex-direction: column;
                text-align: center;
                padding: 40px 20px;
                min-height: auto;
            }
            .hero-section .hero-content {
                max-width: 100%;
            }
            .hero-section .hero-desc {
                max-width: 100%;
            }
            .hero-section .hero-stats {
                justify-content: center;
            }
            .hero-bg-img {
                position: relative;
                right: auto;
                top: auto;
                transform: none;
                width: 80%;
                max-width: 400px;
                margin: 24px auto -20px;
                opacity: 0.4;
                mask-image: linear-gradient(to top, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.9) 60%);
                -webkit-mask-image: linear-gradient(to top, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.9) 60%);
            }
            .section {
                padding: 32px 18px;
            }
            .section-sm {
                padding: 24px 18px;
            }
            .cta-section {
                margin: 18px;
                padding: 28px 18px;
                border-radius: var(--radius-lg);
            }
            .hud-panel {
                gap: 20px;
                padding: 20px;
            }
            .hud-divider {
                display: none;
            }
            .hud-stat .hud-value {
                font-size: 1.6rem;
            }
            .site-footer {
                flex-direction: column;
                text-align: center;
                padding: 24px 18px;
                gap: 12px;
            }
            .hero-section h1 {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .news-list li a {
                flex-wrap: wrap;
                gap: 8px;
                padding: 14px 16px;
            }
            .news-list .news-date {
                min-width: auto;
                font-size: 0.72rem;
            }
        }
        @media (max-width: 520px) {
            .hero-section h1 {
                font-size: 1.5rem;
            }
            .hero-section .hero-stats {
                gap: 16px;
            }
            .hero-section .hero-stat .stat-num {
                font-size: 1.4rem;
            }
            .btn {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
            .card {
                padding: 20px;
            }
            .cover-card .cover-body {
                padding: 14px;
            }
            .cover-card .cover-body h3 {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .cta-section h2 {
                font-size: 1.35rem;
            }
        }

/* roulang page: article */
:root {
            --color-bg: #06060f;
            --color-surface: #0f0f1c;
            --color-surface-alt: #161625;
            --color-surface-card: #131320;
            --color-primary: #7b5cfc;
            --color-primary-glow: rgba(123, 92, 252, 0.45);
            --color-accent: #00d4f0;
            --color-accent-glow: rgba(0, 212, 240, 0.4);
            --color-accent-alt: #ff4d6a;
            --color-accent-alt-glow: rgba(255, 77, 106, 0.35);
            --color-warning: #ffb347;
            --color-success: #3ddc84;
            --color-text: #e2e2ee;
            --color-text-strong: #f0f0f8;
            --color-text-muted: #7a7a98;
            --color-text-dim: #555570;
            --color-border: #1e1e32;
            --color-border-light: #2a2a42;
            --color-sidebar-bg: #0a0a16;
            --color-sidebar-border: #1c1c30;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 26px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.5);
            --shadow-md: 0 6px 22px rgba(0,0,0,0.55);
            --shadow-lg: 0 14px 40px rgba(0,0,0,0.65);
            --shadow-glow-primary: 0 0 28px var(--color-primary-glow);
            --shadow-glow-accent: 0 0 22px var(--color-accent-glow);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --sidebar-width: 248px;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        }

        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-body);
            font-size: 15px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            display: flex;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button, input, textarea {
            font-family: inherit;
            font-size: inherit;
        }

        /* ============ SIDEBAR NAVIGATION ============ */
        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--color-sidebar-bg);
            border-right: 1px solid var(--color-sidebar-border);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: transform var(--transition-slow);
            overflow-y: auto;
            overflow-x: hidden;
            box-shadow: 4px 0 30px rgba(0,0,0,0.5);
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 22px 20px 18px;
            border-bottom: 1px solid var(--color-border);
            flex-shrink: 0;
        }
        .sidebar-brand-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow-primary);
        }
        .sidebar-brand-text {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 17px;
            color: var(--color-text-strong);
            letter-spacing: 0.5px;
            line-height: 1.2;
        }

        .sidebar-nav-list {
            list-style: none;
            padding: 12px 10px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-nav-list li a {
            display: flex;
            align-items: center;
            gap: 11px;
            padding: 11px 14px;
            border-radius: var(--radius-sm);
            color: var(--color-text-muted);
            font-weight: 500;
            font-size: 14px;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.3px;
        }
        .sidebar-nav-list li a i {
            width: 20px;
            text-align: center;
            font-size: 15px;
            flex-shrink: 0;
        }
        .sidebar-nav-list li a:hover {
            background: var(--color-surface-alt);
            color: var(--color-text-strong);
            box-shadow: inset 0 0 0 1px var(--color-border-light);
        }
        .sidebar-nav-list li a.active {
            background: var(--color-surface-alt);
            color: #fff;
            box-shadow: inset 0 0 0 1px var(--color-primary), 0 4px 18px var(--color-primary-glow);
            font-weight: 600;
        }
        .sidebar-nav-list li a.active::before {
            content: '';
            position: absolute;
            left: -10px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            border-radius: 0 4px 4px 0;
            background: var(--color-accent);
            box-shadow: 0 0 12px var(--color-accent-glow);
        }
        .sidebar-nav-tag {
            display: inline-block;
            font-size: 10px;
            padding: 2px 7px;
            border-radius: 20px;
            background: var(--color-accent-alt);
            color: #fff;
            margin-left: auto;
            font-weight: 600;
            letter-spacing: 0.5px;
            box-shadow: 0 0 10px var(--color-accent-alt-glow);
        }

        .sidebar-footer-info {
            padding: 16px 16px 20px;
            border-top: 1px solid var(--color-border);
            flex-shrink: 0;
        }
        .sidebar-footer-info .version-badge {
            display: inline-block;
            font-size: 10px;
            padding: 3px 8px;
            border-radius: 12px;
            background: var(--color-surface-alt);
            color: var(--color-text-dim);
            border: 1px solid var(--color-border-light);
            letter-spacing: 0.8px;
        }

        /* ============ MAIN CONTENT AREA ============ */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            transition: margin-left var(--transition-slow);
        }

        /* ============ MOBILE NAV TOGGLE ============ */
        .mobile-nav-toggle {
            display: none;
            position: fixed;
            top: 12px;
            left: 12px;
            z-index: 1100;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: var(--color-surface-alt);
            border: 1px solid var(--color-border-light);
            color: var(--color-text);
            font-size: 20px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-fast);
        }
        .mobile-nav-toggle:hover {
            background: var(--color-surface-card);
            border-color: var(--color-primary);
            box-shadow: var(--shadow-glow-primary);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.7);
            z-index: 999;
            transition: opacity var(--transition-normal);
        }
        .sidebar-overlay.active {
            display: block;
            opacity: 1;
        }

        /* ============ ARTICLE HERO BANNER ============ */
        .article-banner {
            position: relative;
            background: linear-gradient(170deg, #0f0f22 0%, #0a0a18 40%, #0d0d20 100%);
            border-bottom: 1px solid var(--color-border);
            padding: 36px 40px 28px;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
            pointer-events: none;
            opacity: 0.5;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: 20%;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
            pointer-events: none;
            opacity: 0.3;
        }
        .article-breadcrumb {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 16px;
        }
        .article-breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .article-breadcrumb a:hover {
            color: var(--color-accent);
        }
        .article-breadcrumb .separator {
            color: var(--color-text-dim);
            font-size: 10px;
        }
        .article-breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-meta-strip {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .article-meta-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.4px;
            background: var(--color-surface-alt);
            border: 1px solid var(--color-border-light);
            color: var(--color-accent);
        }
        .article-meta-tag.category-tag {
            background: rgba(123,92,252,0.15);
            border-color: rgba(123,92,252,0.4);
            color: var(--color-primary);
            box-shadow: 0 0 14px rgba(123,92,252,0.2);
        }
        .article-meta-date {
            font-size: 12px;
            color: var(--color-text-dim);
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .article-meta-stats {
            display: flex;
            gap: 18px;
            margin-left: auto;
        }
        .stat-item {
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 11px;
            color: var(--color-text-dim);
            font-weight: 500;
        }
        .stat-item i {
            color: var(--color-accent);
            font-size: 13px;
        }
        .stat-value {
            color: var(--color-text-strong);
            font-weight: 700;
            font-size: 14px;
        }

        /* ============ MAIN CONTENT CONTAINER ============ */
        .content-container {
            max-width: 860px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        .article-body-section {
            padding: 40px 0 50px;
        }

        /* ============ ARTICLE COVER IMAGE ============ */
        .article-cover-wrap {
            margin-bottom: 32px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--color-border-light);
            position: relative;
        }
        .article-cover-wrap img {
            width: 100%;
            object-fit: cover;
            max-height: 440px;
            display: block;
        }
        .article-cover-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04);
            pointer-events: none;
        }

        /* ============ ARTICLE CONTENT TYPOGRAPHY ============ */
        .article-content {
            font-size: 15.5px;
            line-height: 1.85;
            color: var(--color-text);
            word-break: break-word;
        }
        .article-content h2 {
            font-family: var(--font-heading);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-text-strong);
            margin: 36px 0 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--color-border-light);
            letter-spacing: 0.4px;
            position: relative;
        }
        .article-content h2::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 50px;
            height: 2px;
            background: var(--color-primary);
            box-shadow: 0 0 10px var(--color-primary-glow);
        }
        .article-content h3 {
            font-family: var(--font-heading);
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-strong);
            margin: 28px 0 12px;
            letter-spacing: 0.3px;
        }
        .article-content p {
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .article-content ul, .article-content ol {
            margin: 12px 0 18px;
            padding-left: 22px;
        }
        .article-content li {
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .article-content strong {
            color: var(--color-text-strong);
            font-weight: 700;
        }
        .article-content blockquote {
            margin: 20px 0;
            padding: 16px 20px;
            border-left: 4px solid var(--color-primary);
            background: var(--color-surface-alt);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-muted);
            font-style: italic;
            box-shadow: inset 0 0 0 1px var(--color-border-light);
        }
        .article-content img {
            border-radius: var(--radius-md);
            margin: 20px auto;
            box-shadow: var(--shadow-md);
        }
        .article-content code {
            background: var(--color-surface);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 13px;
            border: 1px solid var(--color-border);
            color: var(--color-accent);
        }
        .article-content pre {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            overflow-x: auto;
            margin: 16px 0;
            font-size: 13px;
            line-height: 1.6;
        }

        /* ============ ARTICLE BOTTOM PANEL ============ */
        .article-bottom-panel {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding: 20px 0;
            margin-top: 30px;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .article-tags-row {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .article-tag-pill {
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            background: var(--color-surface-alt);
            border: 1px solid var(--color-border-light);
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
        }
        .article-tag-pill:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            box-shadow: 0 0 12px var(--color-primary-glow);
        }
        .article-share-btns {
            display: flex;
            gap: 8px;
        }
        .share-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--color-border-light);
            background: var(--color-surface-alt);
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-fast);
            font-size: 15px;
        }
        .share-btn:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            box-shadow: var(--shadow-glow-accent);
            transform: translateY(-2px);
        }

        /* ============ RELATED POSTS SECTION ============ */
        .related-section {
            padding: 40px 0 20px;
        }
        .related-section-title {
            font-family: var(--font-heading);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 22px;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: 0.4px;
        }
        .related-section-title::before {
            content: '';
            width: 4px;
            height: 22px;
            border-radius: 2px;
            background: var(--color-accent);
            box-shadow: 0 0 12px var(--color-accent-glow);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        .related-card {
            background: var(--color-surface-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-normal);
            text-decoration: none;
            display: block;
            box-shadow: var(--shadow-sm);
        }
        .related-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-glow-primary), var(--shadow-md);
            transform: translateY(-4px);
        }
        .related-card-img {
            width: 100%;
            height: 150px;
            object-fit: cover;
            display: block;
            border-bottom: 1px solid var(--color-border-light);
        }
        .related-card-body {
            padding: 14px 16px;
        }
        .related-card-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text-strong);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 6px;
        }
        .related-card-meta {
            font-size: 11px;
            color: var(--color-text-dim);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .related-card-meta .cat-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--color-primary);
            box-shadow: 0 0 6px var(--color-primary-glow);
        }

        /* ============ NOT FOUND STATE ============ */
        .not-found-section {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-icon {
            font-size: 64px;
            color: var(--color-text-dim);
            margin-bottom: 20px;
            opacity: 0.6;
        }
        .not-found-title {
            font-family: var(--font-heading);
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 10px;
        }
        .not-found-desc {
            color: var(--color-text-muted);
            margin-bottom: 28px;
            font-size: 15px;
        }
        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 14px;
            background: var(--color-primary);
            color: #fff;
            border: none;
            cursor: pointer;
            text-decoration: none;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-glow-primary);
            letter-spacing: 0.4px;
        }
        .btn-back-home:hover {
            background: #9277ff;
            box-shadow: 0 0 36px var(--color-primary-glow);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            padding: 20px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-dim);
            margin-top: auto;
        }
        .site-footer .footer-brand {
            font-weight: 700;
            color: var(--color-text-muted);
            letter-spacing: 0.4px;
        }
        .site-footer .footer-links {
            display: flex;
            gap: 20px;
        }
        .site-footer .footer-links a {
            color: var(--color-text-dim);
            transition: color var(--transition-fast);
            font-size: 13px;
        }
        .site-footer .footer-links a:hover {
            color: var(--color-accent);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 220px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-banner {
                padding: 28px 24px 20px;
            }
            .article-body-section {
                padding: 28px 0 36px;
            }
            .content-container {
                padding: 0 18px;
            }
        }

        @media (max-width: 768px) {
            .sidebar-nav {
                transform: translateX(-100%);
                width: 260px;
            }
            .sidebar-nav.open {
                transform: translateX(0);
                box-shadow: 8px 0 50px rgba(0,0,0,0.7);
            }
            .sidebar-overlay.active {
                display: block;
            }
            .mobile-nav-toggle {
                display: flex;
            }
            .main-wrapper {
                margin-left: 0;
            }
            .article-banner {
                padding: 22px 16px 16px;
                margin-top: 0;
            }
            .article-breadcrumb {
                font-size: 12px;
            }
            .article-meta-strip {
                gap: 10px;
            }
            .article-meta-stats {
                margin-left: 0;
                gap: 12px;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .related-card-img {
                height: 120px;
            }
            .content-container {
                padding: 0 14px;
            }
            .article-body-section {
                padding: 22px 0 30px;
            }
            .site-footer {
                flex-direction: column;
                text-align: center;
                padding: 16px 14px;
                gap: 8px;
            }
            .site-footer .footer-links {
                gap: 14px;
            }
        }

        @media (max-width: 520px) {
            .article-banner {
                padding: 18px 12px 14px;
            }
            .article-breadcrumb .current {
                max-width: 160px;
            }
            .article-meta-strip {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .article-meta-stats {
                flex-wrap: wrap;
                gap: 10px;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .related-card-img {
                height: 170px;
            }
            .article-content {
                font-size: 14.5px;
            }
            .article-content h2 {
                font-size: 19px;
            }
            .article-content h3 {
                font-size: 16px;
            }
            .article-bottom-panel {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .share-btn {
                width: 32px;
                height: 32px;
                font-size: 13px;
            }
            .article-cover-wrap {
                border-radius: var(--radius-md);
            }
            .article-cover-wrap img {
                max-height: 240px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #08080f;
            --bg-sidebar: #0b0b18;
            --bg-card: #111128;
            --bg-card-hover: #161638;
            --bg-surface: #0e0e20;
            --bg-overlay: rgba(0,0,0,0.75);
            --neon-blue: #00c8ff;
            --neon-blue-glow: rgba(0,200,255,0.35);
            --neon-purple: #b347ea;
            --neon-purple-glow: rgba(179,71,234,0.3);
            --neon-green: #00e676;
            --neon-green-glow: rgba(0,230,118,0.3);
            --neon-orange: #ff6d00;
            --accent-pink: #ff2d78;
            --text-primary: #e8e8f2;
            --text-secondary: #b0b0c8;
            --text-muted: #6e6e8a;
            --text-bright: #ffffff;
            --border-subtle: #1a1a35;
            --border-glow: #252545;
            --border-neon: rgba(0,200,255,0.25);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
            --shadow-glow-blue: 0 0 20px rgba(0,200,255,0.2), 0 0 60px rgba(0,200,255,0.06);
            --shadow-glow-purple: 0 0 20px rgba(179,71,234,0.2), 0 0 60px rgba(179,71,234,0.06);
            --sidebar-width: 250px;
            --topbar-height: 56px;
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.3s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Courier New', monospace;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: row;
            overflow-x: hidden;
        }

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

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

        button,
        input,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ============ 左侧竖向导航 ============ */
        .sidebar-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            border-right: 1px solid var(--border-subtle);
            display: flex;
            flex-direction: column;
            z-index: 100;
            transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
            overflow-y: auto;
        }

        .sidebar-nav::-webkit-scrollbar {
            width: 3px;
        }
        .sidebar-nav::-webkit-scrollbar-track {
            background: transparent;
        }
        .sidebar-nav::-webkit-scrollbar-thumb {
            background: var(--border-glow);
            border-radius: 3px;
        }

        .sidebar-brand {
            padding: 24px 22px 20px;
            border-bottom: 1px solid var(--border-subtle);
            flex-shrink: 0;
        }

        .sidebar-brand .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-bright);
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }
        .sidebar-brand .logo-link:hover {
            color: var(--neon-blue);
        }
        .sidebar-brand .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
            box-shadow: var(--shadow-glow-blue);
        }

        .sidebar-nav-links {
            flex: 1;
            padding: 16px 14px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .sidebar-nav-links .nav-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 16px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.01em;
            white-space: nowrap;
        }
        .sidebar-nav-links .nav-link i {
            width: 18px;
            text-align: center;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .sidebar-nav-links .nav-link:hover {
            color: var(--text-bright);
            background: rgba(255,255,255,0.03);
        }
        .sidebar-nav-links .nav-link.active {
            color: var(--neon-blue);
            background: rgba(0,200,255,0.08);
            box-shadow: inset 3px 0 0 var(--neon-blue), 0 0 16px rgba(0,200,255,0.08);
            font-weight: 600;
        }
        .sidebar-nav-links .nav-link.active::after {
            content: '';
            position: absolute;
            right: 10px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--neon-blue);
            box-shadow: 0 0 8px var(--neon-blue-glow);
        }

        .sidebar-footer-info {
            padding: 16px 22px 20px;
            border-top: 1px solid var(--border-subtle);
            flex-shrink: 0;
        }
        .sidebar-footer-info .sidebar-version {
            font-size: 0.75rem;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }
        .sidebar-footer-info .sidebar-status {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            color: var(--neon-green);
            margin-top: 4px;
        }
        .sidebar-footer-info .status-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--neon-green);
            box-shadow: 0 0 6px var(--neon-green-glow);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        /* 移动端顶部导航条 */
        .mobile-topbar {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--topbar-height);
            background: var(--bg-sidebar);
            border-bottom: 1px solid var(--border-subtle);
            z-index: 101;
            align-items: center;
            justify-content: space-between;
            padding: 0 16px;
        }
        .mobile-topbar .topbar-logo {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-bright);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .mobile-topbar .topbar-logo .logo-icon-sm {
            width: 28px;
            height: 28px;
            border-radius: 5px;
            background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            color: #fff;
        }
        .mobile-topbar .hamburger-btn {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            transition: background var(--transition-fast);
            z-index: 102;
        }
        .mobile-topbar .hamburger-btn:hover {
            background: rgba(255,255,255,0.04);
        }
        .mobile-topbar .hamburger-btn .bar {
            width: 20px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 1px;
            transition: all var(--transition-smooth);
        }
        .mobile-topbar .hamburger-btn.open .bar:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .mobile-topbar .hamburger-btn.open .bar:nth-child(2) {
            opacity: 0;
        }
        .mobile-topbar .hamburger-btn.open .bar:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* 侧边栏遮罩 */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.6);
            z-index: 99;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .sidebar-overlay.show {
            opacity: 1;
        }

        /* ============ 主内容区 ============ */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ============ 板块1：分类Banner ============ */
        .category-banner {
            position: relative;
            padding: 70px 48px 60px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8,8,15,0.88) 0%, rgba(11,11,24,0.78) 40%, rgba(8,8,15,0.9) 100%);
            z-index: 1;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, var(--neon-blue-glow) 0%, transparent 70%);
            z-index: 0;
            animation: float-glow 6s ease-in-out infinite;
        }
        @keyframes float-glow {
            0%,100% { transform: translate(0,0); opacity: 0.5; }
            50% { transform: translate(-30px,20px); opacity: 0.8; }
        }
        .banner-inner {
            position: relative;
            z-index: 2;
            max-width: 900px;
        }
        .banner-breadcrumb {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }
        .banner-breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .banner-breadcrumb a:hover {
            color: var(--neon-blue);
        }
        .banner-breadcrumb .sep {
            margin: 0 8px;
            color: var(--border-glow);
        }
        .banner-breadcrumb .current {
            color: var(--neon-blue);
        }
        .category-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-bright);
            letter-spacing: -0.01em;
            line-height: 1.2;
            margin-bottom: 14px;
        }
        .category-banner h1 .highlight {
            background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-banner .banner-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 560px;
            line-height: 1.6;
            margin-bottom: 0;
        }
        .banner-stats-row {
            display: flex;
            gap: 32px;
            margin-top: 28px;
            flex-wrap: wrap;
        }
        .banner-stat {
            display: flex;
            flex-direction: column;
        }
        .banner-stat .stat-num {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--neon-blue);
            font-family: var(--font-mono);
            letter-spacing: 0.02em;
        }
        .banner-stat .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ============ 板块通用容器 ============ */
        .section-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 48px;
        }
        .section-padding {
            padding: 56px 0;
        }
        .section-header {
            margin-bottom: 36px;
        }
        .section-header h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--text-bright);
            letter-spacing: -0.005em;
            margin-bottom: 6px;
        }
        .section-header .section-subtitle {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* ============ 板块2：主题标签筛选 ============ */
        .topic-filter-section {
            background: var(--bg-surface);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .topic-filter-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }
        .topic-filter-wrap .filter-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-right: 4px;
            flex-shrink: 0;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
            user-select: none;
        }
        .filter-tag:hover {
            color: var(--text-bright);
            border-color: var(--border-glow);
            background: var(--bg-card-hover);
            box-shadow: 0 0 12px rgba(0,200,255,0.06);
        }
        .filter-tag.active {
            color: var(--neon-blue);
            border-color: var(--neon-blue);
            background: rgba(0,200,255,0.08);
            box-shadow: 0 0 16px rgba(0,200,255,0.1);
        }
        .filter-tag .tag-count {
            font-size: 0.7rem;
            color: var(--text-muted);
            background: rgba(255,255,255,0.04);
            padding: 2px 7px;
            border-radius: 10px;
        }

        /* ============ 板块3：攻略卡片网格 ============ */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .strategy-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            position: relative;
        }
        .strategy-card:hover {
            transform: translateY(-4px);
            background: var(--bg-card-hover);
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow-blue);
        }
        .strategy-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--bg-deep);
        }
        .strategy-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .strategy-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .strategy-card .card-level-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            z-index: 2;
            background: rgba(0,0,0,0.7);
            color: var(--neon-blue);
            border: 1px solid rgba(0,200,255,0.35);
            backdrop-filter: blur(4px);
        }
        .strategy-card .card-rating {
            position: absolute;
            top: 12px;
            right: 12px;
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.72rem;
            font-weight: 600;
            z-index: 2;
            background: rgba(0,0,0,0.7);
            color: var(--neon-orange);
            border: 1px solid rgba(255,109,0,0.3);
            backdrop-filter: blur(4px);
            display: flex;
            align-items: center;
            gap: 3px;
        }
        .strategy-card .card-body {
            padding: 18px 18px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .strategy-card .card-tag-row {
            display: flex;
            gap: 6px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .strategy-card .card-tag {
            font-size: 0.7rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 10px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }
        .tag-moba { background: rgba(0,200,255,0.12); color: var(--neon-blue); }
        .tag-fps { background: rgba(255,109,0,0.12); color: var(--neon-orange); }
        .tag-rpg { background: rgba(179,71,234,0.12); color: var(--neon-purple); }
        .tag-equip { background: rgba(0,230,118,0.12); color: var(--neon-green); }
        .tag-dungeon { background: rgba(255,45,120,0.12); color: var(--accent-pink); }
        .tag-pvp { background: rgba(255,200,0,0.12); color: #ffc800; }

        .strategy-card .card-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-bright);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }
        .strategy-card:hover .card-title {
            color: var(--neon-blue);
        }
        .strategy-card .card-excerpt {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.5;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .strategy-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.75rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-subtle);
            padding-top: 10px;
        }
        .strategy-card .card-meta .meta-views i {
            margin-right: 3px;
            color: var(--neon-blue);
            font-size: 0.65rem;
        }

        /* ============ 板块4：热门排行数据面板 ============ */
        .rank-section {
            background: var(--bg-surface);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .rank-panel {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            overflow: hidden;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 22px;
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-fast);
        }
        .rank-item:last-child {
            border-bottom: none;
        }
        .rank-item:hover {
            background: rgba(255,255,255,0.02);
        }
        .rank-num {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
            font-family: var(--font-mono);
        }
        .rank-item:nth-child(1) .rank-num {
            background: linear-gradient(135deg, #ffc800, #ff8c00);
            color: #000;
            box-shadow: 0 0 14px rgba(255,200,0,0.3);
        }
        .rank-item:nth-child(2) .rank-num {
            background: linear-gradient(135deg, #c0c0c0, #888);
            color: #000;
            box-shadow: 0 0 10px rgba(192,192,192,0.2);
        }
        .rank-item:nth-child(3) .rank-num {
            background: linear-gradient(135deg, #cd7f32, #8b5a2b);
            color: #fff;
            box-shadow: 0 0 10px rgba(205,127,50,0.2);
        }
        .rank-item .rank-num.plain {
            background: var(--bg-surface);
            color: var(--text-muted);
            box-shadow: none;
        }
        .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-info .rank-title {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.95rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .rank-heat {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 0.78rem;
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .rank-heat .heat-bar {
            width: 60px;
            height: 4px;
            border-radius: 2px;
            background: var(--border-subtle);
            overflow: hidden;
        }
        .rank-heat .heat-fill {
            height: 100%;
            border-radius: 2px;
            background: var(--neon-blue);
            transition: width 0.6s ease;
        }
        .rank-change {
            font-size: 0.75rem;
            font-weight: 600;
            flex-shrink: 0;
            width: 28px;
            text-align: center;
        }
        .rank-change.up { color: var(--neon-green); }
        .rank-change.down { color: #ff4444; }

        /* ============ 板块5：策略对比面板 ============ */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 20px;
            align-items: stretch;
        }
        .compare-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
        }
        .compare-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow-blue);
        }
        .compare-card.strategy-a {
            border-left: 3px solid var(--neon-blue);
        }
        .compare-card.strategy-b {
            border-right: 3px solid var(--neon-purple);
        }
        .compare-card .compare-label {
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 12px;
            display: inline-block;
            padding: 4px 12px;
            border-radius: 10px;
        }
        .strategy-a .compare-label {
            background: rgba(0,200,255,0.1);
            color: var(--neon-blue);
        }
        .strategy-b .compare-label {
            background: rgba(179,71,234,0.1);
            color: var(--neon-purple);
        }
        .compare-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-bright);
            margin-bottom: 10px;
        }
        .compare-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .compare-card .compare-pros {
            list-style: none;
            padding: 0;
        }
        .compare-card .compare-pros li {
            font-size: 0.82rem;
            color: var(--text-secondary);
            padding: 5px 0;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .compare-card .compare-pros li i {
            color: var(--neon-green);
            font-size: 0.7rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .compare-vs {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .vs-badge {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
            color: #fff;
            font-weight: 800;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 24px rgba(179,71,234,0.35);
            letter-spacing: 0.04em;
        }

        /* ============ 板块6：攻略路径流程 ============ */
        .pathway-flow {
            display: flex;
            gap: 0;
            align-items: flex-start;
            flex-wrap: wrap;
            justify-content: center;
        }
        .path-step {
            flex: 1;
            min-width: 160px;
            max-width: 220px;
            text-align: center;
            position: relative;
            padding: 20px 16px;
        }
        .path-step::after {
            content: '';
            position: absolute;
            top: 48px;
            right: -12px;
            width: 24px;
            height: 2px;
            background: var(--border-glow);
            z-index: 0;
        }
        .path-step:last-child::after {
            display: none;
        }
        .step-icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--border-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.4rem;
            color: var(--neon-blue);
            position: relative;
            z-index: 1;
            transition: all var(--transition-smooth);
        }
        .path-step:hover .step-icon-circle {
            border-color: var(--neon-blue);
            box-shadow: var(--shadow-glow-blue);
            background: rgba(0,200,255,0.06);
        }
        .step-icon-circle.done {
            border-color: var(--neon-green);
            color: var(--neon-green);
            background: rgba(0,230,118,0.06);
        }
        .path-step h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-bright);
            margin-bottom: 4px;
            position: relative;
            z-index: 1;
        }
        .path-step p {
            font-size: 0.75rem;
            color: var(--text-muted);
            line-height: 1.4;
            position: relative;
            z-index: 1;
        }

        /* ============ 板块7：CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, rgba(0,200,255,0.04) 0%, rgba(179,71,234,0.04) 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            text-align: center;
        }
        .cta-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-bright);
            margin-bottom: 10px;
        }
        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 0.95rem;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            background: linear-gradient(135deg, var(--neon-blue), #0098cc);
            color: #fff;
            border: none;
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 18px rgba(0,200,255,0.25);
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 6px 28px rgba(0,200,255,0.4);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(0,200,255,0.2);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            background: transparent;
            color: var(--text-bright);
            border: 1px solid var(--border-glow);
            transition: all var(--transition-smooth);
            cursor: pointer;
            margin-left: 12px;
        }
        .btn-secondary:hover {
            border-color: var(--neon-blue);
            background: rgba(0,200,255,0.05);
            box-shadow: 0 0 16px rgba(0,200,255,0.1);
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--bg-sidebar);
            border-top: 1px solid var(--border-subtle);
            padding: 28px 48px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .site-footer .footer-brand {
            font-weight: 600;
            color: var(--text-secondary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .site-footer .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .site-footer .footer-links a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
            font-size: 0.82rem;
        }
        .site-footer .footer-links a:hover {
            color: var(--neon-blue);
        }
        .site-footer span:last-child {
            white-space: nowrap;
        }

        /* ============ 响应式设计 ============ */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .section-container {
                padding: 0 32px;
            }
            .category-banner {
                padding: 50px 32px 44px;
            }
            .category-banner h1 {
                font-size: 2.2rem;
            }
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .compare-vs {
                order: -1;
            }
            .vs-badge {
                width: 38px;
                height: 38px;
                font-size: 0.75rem;
            }
            .pathway-flow {
                gap: 12px;
            }
            .path-step {
                min-width: 130px;
                max-width: 160px;
                padding: 14px 8px;
            }
            .path-step::after {
                right: -8px;
                width: 16px;
            }
        }

        @media (max-width: 768px) {
            .sidebar-nav {
                transform: translateX(-100%);
                box-shadow: none;
                width: 260px;
            }
            .sidebar-nav.open {
                transform: translateX(0);
                box-shadow: 8px 0 40px rgba(0,0,0,0.6);
            }
            .sidebar-overlay {
                display: block;
                pointer-events: none;
            }
            .sidebar-overlay.show {
                pointer-events: auto;
            }
            .mobile-topbar {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: var(--topbar-height);
            }
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .section-container {
                padding: 0 18px;
            }
            .section-padding {
                padding: 36px 0;
            }
            .category-banner {
                padding: 36px 18px 32px;
            }
            .category-banner h1 {
                font-size: 1.8rem;
            }
            .category-banner .banner-desc {
                font-size: 0.9rem;
            }
            .banner-stats-row {
                gap: 20px;
            }
            .banner-stat .stat-num {
                font-size: 1.4rem;
            }
            .section-header h2 {
                font-size: 1.35rem;
            }
            .strategy-card .card-body {
                padding: 14px 14px 12px;
            }
            .strategy-card .card-title {
                font-size: 0.9rem;
            }
            .site-footer {
                padding: 20px 18px;
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .pathway-flow {
                flex-direction: column;
                align-items: center;
                gap: 8px;
            }
            .path-step {
                max-width: 100%;
                min-width: 200px;
                display: flex;
                align-items: center;
                gap: 14px;
                text-align: left;
                padding: 10px 0;
            }
            .path-step::after {
                display: none;
            }
            .path-step .step-icon-circle {
                margin: 0;
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
                flex-shrink: 0;
            }
            .rank-item {
                padding: 12px 14px;
                gap: 10px;
            }
            .rank-heat .heat-bar {
                width: 40px;
            }
        }

        @media (max-width: 520px) {
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .category-banner h1 {
                font-size: 1.5rem;
            }
            .banner-stats-row {
                gap: 12px;
            }
            .banner-stat .stat-num {
                font-size: 1.2rem;
            }
            .filter-tag {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
            .btn-primary,
            .btn-secondary {
                padding: 11px 20px;
                font-size: 0.85rem;
            }
            .btn-secondary {
                margin-left: 0;
                margin-top: 10px;
            }
            .cta-section .btn-wrap {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 8px;
            }
            .section-container {
                padding: 0 14px;
            }
            .section-padding {
                padding: 28px 0;
            }
            .section-header {
                margin-bottom: 20px;
            }
            .section-header h2 {
                font-size: 1.2rem;
            }
            .strategy-card .card-img-wrap {
                aspect-ratio: 16/11;
            }
        }