/* roulang page: index */
:root {
            --primary: #1C5E3A;
            --primary-dark: #154A2D;
            --primary-light: #2A7A4C;
            --accent: #C8F04B;
            --accent-dark: #A8CC33;
            --bg: #F4F6F1;
            --bg-card: #FFFFFF;
            --bg-alt: #E8EDE4;
            --text: #14211A;
            --text-secondary: #5F6E63;
            --text-light: #8A9A8F;
            --border: rgba(0, 0, 0, 0.06);
            --border-strong: rgba(28, 94, 58, 0.2);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(20, 33, 26, 0.05);
            --shadow: 0 6px 18px rgba(20, 33, 26, 0.06);
            --shadow-lg: 0 12px 32px rgba(20, 33, 26, 0.1);
            --font-base: 16px;
            --line-height: 1.8;
            --spacing-section: 56px;
            --spacing-card: 20px;
            --container-max: 1200px;
            --nav-height: 64px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: var(--font-base);
            line-height: var(--line-height);
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: 14px;
        }

        input {
            font-family: inherit;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ---- Header / Navigation ---- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            min-height: var(--nav-height);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: var(--nav-height);
            gap: 16px;
            flex-wrap: wrap;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: var(--accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }
        .nav-links li a {
            display: block;
            padding: 10px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .nav-links li a:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            min-width: 44px;
            min-height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-strong);
            background: #fff;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0;
                padding: 8px 0 16px;
                align-items: stretch;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 14px 16px;
                text-align: left;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }
            .site-header .container {
                flex-wrap: wrap;
            }
        }

        /* ---- Main sections ---- */
        main {
            display: block;
        }
        section {
            padding: var(--spacing-section) 0;
        }
        section:nth-child(even) {
            background: #fff;
        }
        section:nth-child(odd) {
            background: var(--bg);
        }

        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(200, 240, 75, 0.25);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 24px;
            line-height: 1.7;
        }

        /* ---- Hero ---- */
        .hero {
            background: linear-gradient(135deg, #F4F6F1 0%, #E8EDE4 55%, #DDE5D8 100%);
            padding: 48px 0 56px;
            overflow: hidden;
        }
        .hero .container {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 40px;
            align-items: center;
        }
        .hero-content h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.35;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .hero-content h1 .highlight {
            color: var(--primary);
            position: relative;
            display: inline-block;
        }
        .hero-content h1 .highlight::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            width: 100%;
            height: 6px;
            background: var(--accent);
            opacity: 0.5;
            border-radius: 3px;
            z-index: -1;
        }
        .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: all var(--transition);
            min-height: 44px;
            text-align: center;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: 1px solid var(--primary);
        }
        .btn-primary:hover {
            background: var(--accent);
            color: var(--text);
            border-color: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(200, 240, 75, 0.45);
        }
        .btn-secondary {
            background: #fff;
            color: var(--text);
            border: 1px solid var(--border-strong);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .score-card {
            background: #1A2A20;
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            color: #fff;
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(255, 255, 255, 0.08);
            position: relative;
            overflow: hidden;
        }
        .score-card::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 200px;
            height: 200px;
            background: rgba(200, 240, 75, 0.08);
            border-radius: 50%;
        }
        .score-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 18px;
            font-size: 13px;
            color: #A8B8AD;
            position: relative;
            z-index: 1;
        }
        .score-card-header .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #F56565;
            display: inline-block;
            margin-right: 6px;
            animation: pulse 1.5s infinite;
        }
        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }
        .score-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            position: relative;
            z-index: 1;
        }
        .score-item:last-child {
            border-bottom: none;
        }
        .score-team {
            font-size: 15px;
            font-weight: 500;
            flex: 1;
        }
        .score-team:last-of-type {
            text-align: right;
        }
        .score-num {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
            padding: 0 12px;
            min-width: 60px;
            text-align: center;
            letter-spacing: 1px;
        }
        .score-status {
            font-size: 11px;
            color: #A8B8AD;
            padding: 0 8px;
        }
        .score-card-footer {
            margin-top: 14px;
            font-size: 12px;
            color: #A8B8AD;
            display: flex;
            justify-content: space-between;
            position: relative;
            z-index: 1;
        }
        .score-card-footer span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        @media (max-width: 768px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero-content h1 {
                font-size: 26px;
            }
            .score-card {
                padding: 18px 16px;
            }
            .score-num {
                font-size: 17px;
                min-width: 46px;
                padding: 0 6px;
            }
        }

        /* ---- Ticker ---- */
        .ticker-section {
            background: #fff;
            padding: 12px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .ticker-section .container {
            overflow: hidden;
        }
        .ticker-scroll {
            display: flex;
            gap: 0;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--border-strong) transparent;
        }
        .ticker-scroll::-webkit-scrollbar {
            height: 4px;
        }
        .ticker-scroll::-webkit-scrollbar-thumb {
            background: var(--border-strong);
            border-radius: 4px;
        }
        .ticker-item {
            flex-shrink: 0;
            scroll-snap-align: start;
            padding: 8px 20px;
            border-right: 1px solid var(--border);
            font-size: 13px;
            font-weight: 500;
            color: var(--text);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            min-width: max-content;
        }
        .ticker-item .tag-mini {
            font-size: 10px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 10px;
            background: rgba(200, 240, 75, 0.3);
            color: var(--primary-dark);
            letter-spacing: 0.5px;
        }

        /* ---- Column entrance ---- */
        .col-entrance .grid {
            display: grid;
            grid-template-columns: 1.3fr 1fr 1fr;
            grid-template-rows: 180px 180px;
            gap: 16px;
        }
        .col-entrance .entrance-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 20px 18px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            text-decoration: none;
            color: var(--text);
            box-shadow: var(--shadow-sm);
        }
        .col-entrance .entrance-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }
        .col-entrance .entrance-card:first-child {
            grid-row: span 2;
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .col-entrance .entrance-card:first-child .entrance-desc {
            color: rgba(255, 255, 255, 0.75);
        }
        .col-entrance .entrance-card:first-child .entrance-tag {
            background: rgba(200, 240, 75, 0.25);
            color: var(--accent);
        }
        .entrance-tag {
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            background: rgba(28, 94, 58, 0.1);
            color: var(--primary);
            width: fit-content;
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }
        .entrance-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .entrance-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .col-entrance .grid {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
            }
            .col-entrance .entrance-card:first-child {
                grid-row: span 1;
                min-height: 160px;
            }
            .col-entrance .entrance-card {
                min-height: 120px;
            }
        }

        /* ---- Info split ---- */
        .info-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }
        .info-split .text-side h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }
        .info-split .text-side p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
        }
        .info-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .info-list li {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            padding: 14px 16px;
            font-size: 14px;
            line-height: 1.6;
            display: flex;
            gap: 10px;
            box-shadow: var(--shadow-sm);
        }
        .info-list li .info-label {
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
            min-width: 52px;
        }
        @media (max-width: 768px) {
            .info-split {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ---- Tactics cards ---- */
        .tactics-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .tactics-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .tactics-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }
        .tactics-card .card-img {
            height: 148px;
            overflow: hidden;
            position: relative;
        }
        .tactics-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .tactics-card:hover .card-img img {
            transform: scale(1.02);
        }
        .tactics-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .tactics-card .card-body h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .tactics-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
        }
        .card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 10px;
            display: inline-flex;
            gap: 4px;
            align-items: center;
        }
        @media (max-width: 768px) {
            .tactics-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ---- Data report ---- */
        .data-report-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: center;
        }
        .chart-placeholder {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }
        .chart-bars {
            display: flex;
            align-items: flex-end;
            gap: 12px;
            height: 180px;
            padding: 10px 0 0;
        }
        .chart-bar {
            flex: 1;
            border-radius: 6px 6px 0 0;
            background: var(--primary);
            opacity: 0.85;
            transition: opacity var(--transition);
            position: relative;
            min-width: 20px;
        }
        .chart-bar:hover {
            opacity: 1;
        }
        .chart-bar.highlight-bar {
            background: var(--accent);
        }
        .chart-bar-label {
            font-size: 11px;
            color: var(--text-secondary);
            text-align: center;
            margin-top: 6px;
        }
        .data-summary {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .data-summary .data-card {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            padding: 16px 18px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .data-summary .data-card:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow);
        }
        .data-summary .data-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }
        .data-summary .data-value {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .data-report-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ---- Brand intro ---- */
        .brand-intro {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 32px 30px;
            box-shadow: var(--shadow-sm);
        }
        .brand-intro h2 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }
        .brand-intro .brand-cols {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .brand-intro p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 14px;
        }
        .brand-intro .brand-points {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .brand-intro .brand-points li {
            font-size: 14px;
            line-height: 1.7;
            padding-left: 20px;
            position: relative;
            color: var(--text-secondary);
        }
        .brand-intro .brand-points li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
        }
        @media (max-width: 768px) {
            .brand-intro .brand-cols {
                grid-template-columns: 1fr;
            }
            .brand-intro {
                padding: 20px 18px;
            }
        }

        /* ---- Injury tabs ---- */
        .injury-tabs {
            display: flex;
            gap: 8px;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .injury-tab {
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 600;
            border-radius: 20px;
            background: #fff;
            border: 1px solid var(--border-strong);
            color: var(--text-secondary);
            transition: all var(--transition);
            min-height: 36px;
        }
        .injury-tab:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .injury-tab.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .injury-panel {
            display: none;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 18px 20px;
            box-shadow: var(--shadow-sm);
        }
        .injury-panel.active {
            display: block;
        }
        .injury-row {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            line-height: 1.7;
        }
        .injury-row:last-child {
            border-bottom: none;
        }
        .injury-team {
            font-weight: 700;
            color: var(--primary);
            min-width: 60px;
            flex-shrink: 0;
        }
        .injury-info {
            color: var(--text-secondary);
        }

        /* ---- Long SEO section ---- */
        .long-seo {
            background: #fff;
        }
        .long-seo article {
            max-width: 800px;
            margin: 0 auto;
        }
        .long-seo article h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
            text-align: center;
        }
        .long-seo article h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin: 20px 0 10px;
        }
        .long-seo article p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 14px;
            text-align: justify;
        }

        /* ---- Equipment rating ---- */
        .equip-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: start;
        }
        .equip-img {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .equip-img img {
            width: 100%;
            height: 260px;
            object-fit: cover;
        }
        .rating-table {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 18px 20px;
            box-shadow: var(--shadow-sm);
        }
        .rating-table h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
        }
        .rating-row {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
            border-bottom: 1px solid var(--border);
        }
        .rating-row:last-child {
            border-bottom: none;
        }
        .rating-label {
            font-size: 13px;
            font-weight: 600;
            min-width: 56px;
            color: var(--text);
        }
        .rating-bar-bg {
            flex: 1;
            height: 8px;
            background: var(--bg-alt);
            border-radius: 4px;
            overflow: hidden;
        }
        .rating-bar-fill {
            height: 100%;
            background: var(--primary);
            border-radius: 4px;
            transition: width 0.6s ease;
        }
        .rating-bar-fill.high {
            background: var(--accent);
        }
        .rating-score {
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            min-width: 32px;
            text-align: right;
        }
        @media (max-width: 768px) {
            .equip-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ---- FAQ ---- */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 16px 18px;
            font-weight: 600;
            font-size: 15px;
            color: var(--text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            list-style: none;
            user-select: none;
            min-height: 44px;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-arrow {
            font-size: 12px;
            color: var(--text-secondary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 18px 16px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ---- Fan comments ---- */
        .comments-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .comment-card {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            padding: 16px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .comment-card .comment-meta {
            font-size: 12px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comment-card .comment-meta .dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--text-light);
        }
        @media (max-width: 768px) {
            .comments-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ---- Subscribe strip ---- */
        .subscribe-strip {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 28px 30px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
            justify-content: space-between;
        }
        .subscribe-strip .sub-text h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .subscribe-strip .sub-text p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }
        .subscribe-form {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .subscribe-form input {
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            min-width: 220px;
            transition: border var(--transition);
        }
        .subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .subscribe-form input:focus {
            outline: none;
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.15);
        }
        .subscribe-form .btn-sub {
            background: var(--accent);
            color: var(--text);
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 14px;
            transition: all var(--transition);
            min-height: 44px;
            white-space: nowrap;
        }
        .subscribe-form .btn-sub:hover {
            background: #B8E03A;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(200, 240, 75, 0.4);
        }
        @media (max-width: 768px) {
            .subscribe-strip {
                flex-direction: column;
                align-items: flex-start;
                padding: 20px 18px;
            }
            .subscribe-form input {
                min-width: 100%;
            }
        }

        /* ---- Tag cloud ---- */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            max-width: 700px;
            margin: 0 auto;
        }
        .tag-cloud .tag {
            padding: 8px 18px;
            border-radius: 20px;
            background: #fff;
            border: 1px solid var(--border-strong);
            font-size: 13px;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
            text-decoration: none;
            cursor: pointer;
        }
        .tag-cloud .tag:hover {
            background: var(--accent);
            color: var(--text);
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }

        /* ---- Footer ---- */
        .site-footer {
            background: var(--primary);
            color: #fff;
            padding: 40px 0 24px;
            margin-top: 40px;
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 28px;
        }
        .footer-brand h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
            max-width: 260px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
            text-decoration: none;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            grid-column: 1 / -1;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 18px;
            margin-top: 8px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom .copyright {
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
        }
        .footer-bottom .beian {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .footer-bottom .beian span {
            color: rgba(255, 255, 255, 0.55);
        }
        @media (max-width: 768px) {
            .site-footer .container {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
        }

        /* ---- Responsive global ---- */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 40px;
            }
            .hero-content h1 {
                font-size: 28px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --spacing-section: 32px;
                --font-base: 15px;
            }
            .container {
                padding: 0 16px;
            }
            .section-title {
                font-size: 19px;
            }
            .hero {
                padding: 32px 0 40px;
            }
            .hero-content h1 {
                font-size: 22px;
            }
            .btn {
                padding: 10px 16px;
                font-size: 13px;
                min-height: 40px;
            }
            .score-card {
                padding: 14px 12px;
            }
            .score-team {
                font-size: 13px;
            }
            .score-num {
                font-size: 15px;
                min-width: 36px;
                padding: 0 4px;
            }
            .tag-cloud .tag {
                padding: 6px 14px;
                font-size: 12px;
            }
            .brand-intro {
                padding: 16px 14px;
            }
            .long-seo article p {
                font-size: 14px;
                text-align: left;
            }
        }
        @media (max-width: 360px) {
            .container {
                padding: 0 12px;
            }
            .hero-content h1 {
                font-size: 20px;
            }
            .section-title {
                font-size: 18px;
            }
            .btn {
                padding: 8px 12px;
                font-size: 12px;
                min-height: 38px;
            }
            .subscribe-form input {
                min-width: 100%;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1C5E3A;
            --primary-dark: #154A2D;
            --primary-light: #2A7A4C;
            --accent: #C8F04B;
            --accent-dark: #A8CC33;
            --bg: #F4F6F1;
            --bg-card: #FFFFFF;
            --bg-alt: #E8EDE4;
            --text: #14211A;
            --text-secondary: #5F6E63;
            --text-light: #8A9A8F;
            --border: rgba(0, 0, 0, 0.06);
            --border-strong: rgba(28, 94, 58, 0.2);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(20, 33, 26, 0.05);
            --shadow: 0 6px 18px rgba(20, 33, 26, 0.06);
            --shadow-lg: 0 12px 32px rgba(20, 33, 26, 0.1);
            --font-base: 16px;
            --line-height: 1.8;
            --spacing-section: 56px;
            --spacing-card: 20px;
            --container-max: 1200px;
            --nav-height: 64px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: var(--font-base);
            line-height: var(--line-height);
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: 14px;
        }
        input {
            font-family: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            min-height: var(--nav-height);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: var(--nav-height);
            gap: 16px;
            flex-wrap: wrap;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: var(--accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: block;
            padding: 10px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .nav-links li a:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            min-width: 44px;
            min-height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-strong);
            background: #fff;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Breadcrumb */
        .breadcrumb-wrapper {
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }
        .breadcrumb {
            margin: 0;
            padding: 0;
            list-style: none;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb li a {
            color: var(--text-secondary);
            font-weight: 500;
        }
        .breadcrumb li a:hover {
            color: var(--primary);
        }
        .breadcrumb li span.sep {
            color: var(--text-light);
            font-size: 13px;
        }
        .breadcrumb li.current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Category Hero (not same as home hero) */
        .category-hero {
            padding: 40px 0 32px;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
        }
        .category-hero .hero-content {
            max-width: 820px;
        }
        .category-hero h1 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin: 0 0 12px;
            letter-spacing: 0.3px;
        }
        .category-hero .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
            max-width: 720px;
        }

        /* Filter Bar */
        .filter-bar {
            padding: 18px 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
        }
        .filter-bar .filter-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-right: 12px;
            letter-spacing: 0.5px;
        }
        .filter-tags {
            display: inline-flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .filter-tag {
            display: inline-block;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            cursor: pointer;
            transition: all var(--transition);
            user-select: none;
        }
        .filter-tag:hover {
            border-color: var(--border-strong);
            color: var(--primary);
            background: var(--bg-alt);
        }
        .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        /* Section base */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0 0 28px;
            line-height: 1.7;
        }

        /* List Cards */
        .list-card-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .list-card {
            display: flex;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
            min-height: 148px;
        }
        .list-card:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .list-card .card-img {
            width: 148px;
            min-width: 148px;
            height: 148px;
            overflow: hidden;
            flex-shrink: 0;
            position: relative;
            background: var(--bg-alt);
        }
        .list-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s var(--transition);
        }
        .list-card:hover .card-img img {
            transform: scale(1.02);
        }
        .list-card .card-body {
            flex: 1;
            padding: 16px 20px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 8px;
        }
        .list-card .card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin: 0;
        }
        .list-card .card-title a {
            color: var(--text);
            transition: color var(--transition);
        }
        .list-card .card-title a:hover {
            color: var(--primary);
        }
        .list-card .card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            flex-grow: 1;
        }
        .list-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .list-card .card-tag {
            display: inline-block;
            padding: 3px 10px;
            background: var(--bg-alt);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            letter-spacing: 0.3px;
        }
        .list-card .card-date {
            font-size: 13px;
            color: var(--text-light);
        }

        /* Data cards */
        .data-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .data-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 20px 18px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .data-card:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow);
        }
        .data-card .data-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 12px;
            font-size: 20px;
            color: var(--primary);
            font-weight: 700;
        }
        .data-card h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .data-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* Related topics */
        .related-topics {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .related-topic-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 16px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .related-topic-link:hover {
            border-color: var(--border-strong);
            color: var(--primary);
            background: var(--bg-alt);
            box-shadow: var(--shadow-sm);
        }
        .related-topic-link .topic-label {
            display: inline-block;
            padding: 2px 8px;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 700;
            border-radius: 4px;
            letter-spacing: 0.3px;
        }

        /* View more */
        .view-more-wrap {
            text-align: center;
            margin-top: 28px;
        }
        .btn-view-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--bg-card);
            color: var(--primary);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid var(--border-strong);
            border-radius: 999px;
            transition: all var(--transition);
            letter-spacing: 0.3px;
        }
        .btn-view-more:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 8px 20px rgba(28, 94, 58, 0.18);
            transform: translateY(-2px);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:first-child .faq-answer {
            display: block;
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            text-align: left;
            background: none;
            transition: color var(--transition);
            line-height: 1.5;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            transition: transform var(--transition);
            font-size: 12px;
        }
        .faq-answer {
            display: none;
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .faq-answer p {
            margin: 0;
        }

        /* Subscribe */
        .subscribe-band {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 32px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .subscribe-band .subscribe-text h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 6px;
            line-height: 1.4;
        }
        .subscribe-band .subscribe-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            margin: 0;
            line-height: 1.6;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
        }
        .subscribe-form input {
            padding: 12px 18px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            min-width: 220px;
            transition: border-color var(--transition), background var(--transition);
        }
        .subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }
        .subscribe-form input:focus {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.18);
            outline: none;
        }
        .btn-subscribe {
            padding: 12px 24px;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .btn-subscribe:hover {
            background: #d4f56a;
            color: var(--primary-dark);
            box-shadow: 0 6px 16px rgba(200, 240, 75, 0.3);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: var(--primary);
            color: #fff;
            padding: 48px 0 24px;
            margin-top: var(--spacing-section);
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
        }
        .footer-brand h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            margin: 0 0 12px;
            color: #fff;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            grid-column: 1 / -1;
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom .copyright {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom .beian {
            display: flex;
            gap: 16px;
            align-items: center;
            flex-wrap: wrap;
        }
        .footer-bottom .beian span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .list-card-grid {
                grid-template-columns: 1fr;
            }
            .data-card-grid {
                grid-template-columns: 1fr 1fr;
            }
            .site-footer .container {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0;
                padding: 8px 0 16px;
                align-items: stretch;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 14px 16px;
                text-align: left;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }
            .site-header .container {
                flex-wrap: wrap;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero {
                padding: 28px 0 24px;
            }
            .section {
                padding: 40px 0;
            }
            .list-card {
                flex-direction: column;
                min-height: auto;
            }
            .list-card .card-img {
                width: 100%;
                min-width: 100%;
                height: 180px;
            }
            .list-card .card-body {
                padding: 14px 16px;
            }
            .data-card-grid {
                grid-template-columns: 1fr;
            }
            .subscribe-band {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 20px;
            }
            .subscribe-form input {
                min-width: 100%;
            }
            .site-footer .container {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            :root {
                --spacing-section: 32px;
                --font-base: 15px;
            }
            .container {
                padding: 0 16px;
            }
            .filter-tags {
                gap: 6px;
            }
            .filter-tag {
                padding: 5px 10px;
                font-size: 12px;
            }
            .list-card .card-img {
                height: 150px;
            }
            .breadcrumb {
                font-size: 13px;
                flex-wrap: wrap;
            }
            .category-hero h1 {
                font-size: 20px;
            }
            .category-hero .hero-desc {
                font-size: 14px;
            }
            .section-title {
                font-size: 19px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer {
                font-size: 13px;
                padding: 0 16px 14px;
            }
            .subscribe-band {
                padding: 20px 16px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1C5E3A;
            --primary-dark: #154A2D;
            --primary-light: #2A7A4C;
            --accent: #C8F04B;
            --accent-dark: #A8CC33;
            --bg: #F4F6F1;
            --bg-card: #FFFFFF;
            --bg-alt: #E8EDE4;
            --text: #14211A;
            --text-secondary: #5F6E63;
            --text-light: #8A9A8F;
            --border: rgba(0, 0, 0, 0.06);
            --border-strong: rgba(28, 94, 58, 0.2);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(20, 33, 26, 0.05);
            --shadow: 0 6px 18px rgba(20, 33, 26, 0.06);
            --shadow-lg: 0 12px 32px rgba(20, 33, 26, 0.1);
            --font-base: 16px;
            --line-height: 1.8;
            --spacing-section: 56px;
            --spacing-card: 20px;
            --container-max: 1200px;
            --nav-height: 64px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: var(--font-base);
            line-height: var(--line-height);
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: 14px;
        }
        input {
            font-family: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ---- Header / Navigation ---- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            min-height: var(--nav-height);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: var(--nav-height);
            gap: 16px;
            flex-wrap: wrap;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--primary-dark);
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: var(--accent);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            min-width: 44px;
            min-height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-strong);
            background: #fff;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: block;
            padding: 10px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .nav-links li a:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        /* ---- Main sections ---- */
        main {
            display: block;
            min-height: 60vh;
        }
        section {
            padding: var(--spacing-section) 0;
        }
        section:nth-child(even) {
            background: var(--bg-alt);
        }
        section:nth-child(odd) {
            background: var(--bg);
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            padding: 20px 0 0;
            background: var(--bg);
        }
        .breadcrumb-nav {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: var(--text-secondary);
        }
        .breadcrumb-nav a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav .sep {
            color: var(--text-light);
            user-select: none;
        }
        .breadcrumb-nav .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* H1 zone */
        .h1-zone {
            padding: 28px 0 10px;
            background: var(--bg);
        }
        .h1-zone h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px;
            line-height: 1.4;
            letter-spacing: 0.5px;
        }
        .h1-zone p.sub {
            font-size: 17px;
            color: var(--text-secondary);
            margin: 0;
            max-width: 780px;
            line-height: 1.9;
        }

        /* Filter bar */
        .filter-bar {
            padding: 24px 0 10px;
            background: var(--bg);
        }
        .filter-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }
        .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
            min-width: 70px;
        }
        .filter-tag {
            display: inline-block;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border-strong);
            border-radius: 999px;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            min-height: 38px;
        }
        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--bg-alt);
        }
        .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }
        .filter-tag .count {
            display: inline-block;
            margin-left: 6px;
            font-size: 12px;
            font-weight: 400;
            opacity: 0.75;
        }

        /* Card list */
        .card-list {
            padding: 24px 0 10px;
            background: var(--bg);
        }
        .card-list .inner-head {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            margin-bottom: 20px;
            flex-wrap: wrap;
            gap: 8px;
        }
        .card-list .inner-head h2 {
            font-size: 22px;
            font-weight: 700;
            margin: 0;
            color: var(--text);
        }
        .card-list .inner-head span.count-note {
            font-size: 14px;
            color: var(--text-light);
        }
        .tactics-card {
            display: flex;
            flex-direction: row;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            margin-bottom: 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .tactics-card:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow);
        }
        .tactics-card .card-img {
            flex: 0 0 248px;
            height: 148px;
            overflow: hidden;
            background: var(--bg-alt);
            position: relative;
        }
        .tactics-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .tactics-card:hover .card-img img {
            transform: scale(1.02);
        }
        .tactics-card .card-body {
            flex: 1;
            padding: 18px 20px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-width: 0;
        }
        .tactics-card .card-body .card-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            margin-bottom: 6px;
            font-size: 13px;
            color: var(--text-light);
        }
        .tactics-card .card-body .tag {
            display: inline-block;
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 500;
            background: var(--bg-alt);
            color: var(--primary);
            border-radius: 999px;
            white-space: nowrap;
        }
        .tactics-card .card-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text);
            line-height: 1.5;
        }
        .tactics-card .card-body h3 a {
            color: var(--text);
            text-decoration: none;
            transition: color var(--transition);
        }
        .tactics-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .tactics-card .card-body p {
            font-size: 14.5px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .tactics-card .card-body .card-date {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 8px;
        }

        /* More button */
        .more-zone {
            padding: 10px 0 30px;
            background: var(--bg);
            text-align: center;
        }
        .btn-more {
            display: inline-block;
            padding: 12px 32px;
            font-size: 15px;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            min-width: 160px;
            text-align: center;
        }
        .btn-more:hover {
            background: var(--accent);
            color: var(--text);
            box-shadow: 0 8px 20px rgba(200, 240, 75, 0.45);
            transform: translateY(-2px);
        }
        .btn-more:active {
            transform: translateY(0);
            box-shadow: none;
        }

        /* Glossary / terms */
        .glossary {
            padding: var(--spacing-section) 0;
            background: var(--bg);
        }
        .glossary h2 {
            font-size: 22px;
            font-weight: 700;
            margin: 0 0 24px;
            color: var(--text);
            text-align: center;
        }
        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 16px;
        }
        .glossary-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 18px;
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .glossary-card:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow);
        }
        .glossary-card .term {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .glossary-card .term .dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
            flex-shrink: 0;
        }
        .glossary-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.75;
        }

        /* Related topics */
        .related-topics {
            padding: var(--spacing-section) 0;
            background: var(--bg-alt);
        }
        .related-topics h2 {
            font-size: 22px;
            font-weight: 700;
            margin: 0 0 20px;
            color: var(--text);
        }
        .related-topics .topics-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .related-topics .topic-link {
            display: inline-block;
            padding: 12px 22px;
            background: var(--bg-card);
            border: 1px solid var(--border-strong);
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--primary);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .related-topics .topic-link:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .related-topics .topic-link .sub-tag {
            display: inline-block;
            margin-left: 8px;
            font-size: 12px;
            color: var(--text-light);
            background: var(--bg-alt);
            padding: 2px 8px;
            border-radius: 999px;
        }
        .related-topics .topic-link:hover .sub-tag {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
        }

        /* Subscribe strip */
        .subscribe-strip {
            padding: 40px 0;
            background: var(--bg);
        }
        .subscribe-box {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            box-shadow: var(--shadow-sm);
        }
        .subscribe-box .sub-text h2 {
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--text);
        }
        .subscribe-box .sub-text p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }
        .subscribe-box .sub-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: center;
        }
        .subscribe-box .sub-form input {
            flex: 1;
            min-width: 220px;
            padding: 12px 16px;
            font-size: 15px;
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-sm);
            background: #fff;
            color: var(--text);
            transition: border-color var(--transition);
        }
        .subscribe-box .sub-form input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(28, 94, 58, 0.08);
        }
        .subscribe-box .sub-form .btn-sub {
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .subscribe-box .sub-form .btn-sub:hover {
            background: var(--accent);
            color: var(--text);
            box-shadow: 0 8px 20px rgba(200, 240, 75, 0.45);
            transform: translateY(-2px);
        }
        .subscribe-box .sub-form .btn-sub:active {
            transform: translateY(0);
            box-shadow: none;
        }

        /* FAQ */
        .faq-zone {
            padding: var(--spacing-section) 0;
            background: var(--bg-alt);
        }
        .faq-zone h2 {
            font-size: 22px;
            font-weight: 700;
            margin: 0 0 24px;
            color: var(--text);
            text-align: center;
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item.open {
            border-color: var(--border-strong);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            border: none;
            cursor: pointer;
            text-align: left;
            gap: 12px;
            transition: background var(--transition);
            min-height: 56px;
        }
        .faq-question:hover {
            background: var(--bg-alt);
        }
        .faq-question .arrow {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-light);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question .arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.8;
        }

        /* ---- Footer ---- */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .site-footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
        }
        .site-footer h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin: 0;
            line-height: 1.7;
            max-width: 340px;
        }
        .site-footer .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 12px;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: color var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--accent);
        }
        .site-footer .footer-col ul li span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
        }
        .site-footer .footer-bottom {
            grid-column: 1 / -1;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .site-footer .footer-bottom .beian {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .site-footer .footer-bottom .beian span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-brand .logo-icon {
            width: 28px;
            height: 28px;
            background: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .footer-brand .logo-icon svg {
            width: 16px;
            height: 16px;
            fill: var(--primary);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 48px;
            }
            .site-footer .container {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .tactics-card .card-img {
                flex: 0 0 200px;
                height: 140px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 36px;
                --font-base: 15px;
            }
            .site-header .container {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0;
                padding: 8px 0 16px;
                align-items: stretch;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 14px 16px;
                text-align: left;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }
            .h1-zone h1 {
                font-size: 28px;
            }
            .tactics-card {
                flex-direction: column;
            }
            .tactics-card .card-img {
                flex: 0 0 160px;
                height: 160px;
                width: 100%;
            }
            .tactics-card .card-body {
                padding: 16px 16px 14px;
            }
            .glossary-grid {
                grid-template-columns: 1fr;
            }
            .subscribe-box {
                flex-direction: column;
                align-items: stretch;
                padding: 24px 20px;
            }
            .subscribe-box .sub-form input {
                min-width: 100%;
            }
            .site-footer .container {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .filter-row {
                gap: 8px;
            }
            .filter-tag {
                padding: 7px 12px;
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --spacing-section: 28px;
                --font-base: 14.5px;
            }
            .container {
                padding: 0 16px;
            }
            .h1-zone h1 {
                font-size: 24px;
            }
            .tactics-card .card-img {
                height: 140px;
            }
            .btn-more {
                width: 100%;
            }
            .related-topics .topics-row {
                gap: 10px;
            }
            .related-topics .topic-link {
                font-size: 14px;
                padding: 10px 16px;
            }
            .faq-question {
                padding: 15px 16px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
            .subscribe-box .sub-form {
                flex-direction: column;
            }
            .subscribe-box .sub-form .btn-sub {
                width: 100%;
            }
        }

/* roulang page: category3 */
:root {
      --primary: #1C5E3A;
      --primary-dark: #154A2D;
      --primary-light: #2A7A4C;
      --accent: #C8F04B;
      --accent-dark: #A8CC33;
      --bg: #F4F6F1;
      --bg-card: #FFFFFF;
      --bg-alt: #E8EDE4;
      --text: #14211A;
      --text-secondary: #5F6E63;
      --text-light: #8A9A8F;
      --border: rgba(0, 0, 0, 0.06);
      --border-strong: rgba(28, 94, 58, 0.2);
      --radius-sm: 8px;
      --radius: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(20, 33, 26, 0.05);
      --shadow: 0 6px 18px rgba(20, 33, 26, 0.06);
      --shadow-lg: 0 12px 32px rgba(20, 33, 26, 0.1);
      --font-base: 16px;
      --line-height: 1.8;
      --spacing-section: 56px;
      --spacing-card: 20px;
      --container-max: 1200px;
      --nav-height: 64px;
      --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }
    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
      font-size: var(--font-base);
      line-height: var(--line-height);
      color: var(--text);
      background-color: var(--bg);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }
    a {
      color: var(--primary);
      text-decoration: none;
      transition: color var(--transition);
    }
    a:hover {
      color: var(--primary-dark);
    }
    a:focus-visible,
    button:focus-visible,
    input:focus-visible {
      outline: 2px solid var(--accent);
      outline-offset: 2px;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: none;
      font-size: 14px;
    }
    input {
      font-family: inherit;
    }
    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }
    /* Header */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: #fff;
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      min-height: var(--nav-height);
    }
    .site-header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: var(--nav-height);
      gap: 16px;
      flex-wrap: wrap;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 18px;
      color: var(--primary);
      letter-spacing: 0.5px;
      white-space: nowrap;
    }
    .logo-icon {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .logo-icon svg {
      width: 18px;
      height: 18px;
      fill: var(--accent);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 4px;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .nav-links li a {
      display: block;
      padding: 10px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      border-radius: var(--radius-sm);
      transition: background var(--transition), color var(--transition);
      white-space: nowrap;
    }
    .nav-links li a:hover {
      background: var(--bg-alt);
      color: var(--primary);
    }
    .nav-links li a.active {
      background: var(--primary);
      color: #fff;
      font-weight: 600;
    }
    .nav-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      padding: 10px;
      min-width: 44px;
      min-height: 44px;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-strong);
      background: #fff;
    }
    .nav-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--text);
      border-radius: 2px;
      transition: all var(--transition);
    }
    .nav-toggle.open span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }
    .nav-toggle.open span:nth-child(2) {
      opacity: 0;
    }
    .nav-toggle.open span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }
    @media (max-width: 991px) {
      .nav-toggle {
        display: flex;
      }
      .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        gap: 0;
        padding: 8px 0 16px;
        align-items: stretch;
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links li a {
        padding: 14px 16px;
        text-align: left;
        font-size: 16px;
        border-radius: var(--radius-sm);
      }
      .site-header .container {
        flex-wrap: wrap;
      }
    }
    /* Main */
    main {
      display: block;
      min-height: 60vh;
    }
    section {
      padding: var(--spacing-section) 0;
    }
    .section-wrap {
      background: var(--bg-card);
    }
    .section-wrap-alt {
      background: var(--bg-alt);
    }
    /* Breadcrumb */
    .breadcrumb-bar {
      background: var(--bg);
      padding: 18px 0;
      font-size: 14px;
      color: var(--text-secondary);
    }
    .breadcrumb-bar a {
      color: var(--text-secondary);
      margin-right: 4px;
    }
    .breadcrumb-bar a:hover {
      color: var(--primary);
    }
    .breadcrumb-bar .sep {
      margin: 0 6px;
      color: var(--text-light);
    }
    /* Category hero */
    .category-hero {
      background: var(--bg-alt);
      padding: 32px 0 28px;
      border-bottom: 1px solid var(--border);
    }
    .category-hero-inner {
      display: flex;
      align-items: center;
      gap: 32px;
      flex-wrap: wrap;
    }
    .category-hero-title {
      flex: 1 1 60%;
      min-width: 280px;
    }
    .category-hero-title h1 {
      font-size: 34px;
      font-weight: 700;
      color: var(--text);
      margin: 0 0 10px;
      line-height: 1.3;
      letter-spacing: 0.5px;
    }
    .category-hero-title p {
      font-size: 16px;
      color: var(--text-secondary);
      margin: 0;
      max-width: 700px;
      line-height: 1.85;
    }
    .category-hero-img {
      flex: 0 0 220px;
      max-width: 220px;
    }
    .category-hero-img img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-lg);
      width: 100%;
      height: 150px;
      object-fit: cover;
    }
    /* Filter bar */
    .filter-bar {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 16px 20px;
      box-shadow: var(--shadow-sm);
      margin-top: 24px;
      display: flex;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
    }
    .filter-bar label {
      font-weight: 600;
      color: var(--text-secondary);
      font-size: 14px;
      white-space: nowrap;
    }
    .filter-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .filter-tag {
      background: var(--bg);
      border: 1px solid var(--border);
      color: var(--text-secondary);
      padding: 8px 14px;
      border-radius: 999px;
      font-size: 14px;
      transition: all var(--transition);
      cursor: pointer;
    }
    .filter-tag:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--bg-alt);
    }
    .filter-tag.active {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
      font-weight: 600;
    }
    /* Research list */
    .research-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .research-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
    }
    .research-card:hover {
      border-color: var(--border-strong);
      box-shadow: var(--shadow-lg);
      transform: translateY(-2px);
    }
    .research-card-img {
      height: 148px;
      overflow: hidden;
      background: var(--bg-alt);
    }
    .research-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .research-card:hover .research-card-img img {
      transform: scale(1.03);
    }
    .research-card-body {
      padding: 16px 18px 18px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      flex: 1;
    }
    .research-card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .badge-soft {
      background: var(--bg-alt);
      color: var(--primary-dark);
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 999px;
      font-weight: 500;
      letter-spacing: 0.3px;
    }
    .badge-accent {
      background: var(--accent);
      color: var(--primary-dark);
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 999px;
      font-weight: 600;
    }
    .research-card-title {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.45;
      color: var(--text);
      margin: 0;
    }
    .research-card-title a {
      color: var(--text);
    }
    .research-card-title a:hover {
      color: var(--primary);
    }
    .research-card-summary {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.75;
      margin: 0;
    }
    .research-card-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: var(--text-light);
      border-top: 1px solid var(--border);
      padding-top: 12px;
      margin-top: auto;
    }
    .research-card-meta a {
      color: var(--primary);
      font-weight: 600;
      font-size: 13px;
    }
    /* Data term cards */
    .data-term-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }
    .data-term-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 20px 16px;
      box-shadow: var(--shadow-sm);
      transition: box-shadow var(--transition), border-color var(--transition);
      text-align: left;
    }
    .data-term-card:hover {
      border-color: var(--border-strong);
      box-shadow: var(--shadow);
    }
    .data-term-card .term-num {
      font-size: 28px;
      font-weight: 700;
      color: var(--primary);
      line-height: 1.2;
      margin-bottom: 6px;
    }
    .data-term-card .term-label {
      font-weight: 600;
      color: var(--text);
      font-size: 15px;
      margin-bottom: 4px;
    }
    .data-term-card .term-desc {
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.6;
    }
    /* Related topics */
    .related-topics {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .related-topic-item {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 16px;
      box-shadow: var(--shadow-sm);
      transition: box-shadow var(--transition), border-color var(--transition);
      text-align: left;
    }
    .related-topic-item:hover {
      border-color: var(--border-strong);
      box-shadow: var(--shadow);
    }
    .related-topic-item h3 {
      font-size: 16px;
      font-weight: 600;
      margin: 0 0 6px;
      color: var(--text);
    }
    .related-topic-item p {
      font-size: 14px;
      color: var(--text-secondary);
      margin: 0 0 10px;
      line-height: 1.65;
    }
    .related-topic-item a {
      font-size: 14px;
      font-weight: 600;
    }
    /* Subscribe band */
    .subscribe-band {
      background: var(--primary);
      color: #fff;
      padding: 32px 0;
      border-radius: var(--radius-lg);
      margin: 0 0 20px;
    }
    .subscribe-band .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 18px;
    }
    .subscribe-band h2 {
      font-size: 22px;
      font-weight: 700;
      margin: 0 0 4px;
      color: #fff;
    }
    .subscribe-band p {
      margin: 0;
      font-size: 15px;
      color: rgba(255,255,255,0.85);
    }
    .subscribe-form {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }
    .subscribe-form input {
      min-width: 240px;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255,255,255,0.4);
      background: rgba(255,255,255,0.12);
      color: #fff;
      font-size: 14px;
      transition: border-color var(--transition), background var(--transition);
    }
    .subscribe-form input::placeholder {
      color: rgba(255,255,255,0.7);
    }
    .subscribe-form input:focus {
      border-color: var(--accent);
      background: rgba(255,255,255,0.2);
      outline: none;
    }
    .btn-accent {
      background: var(--accent);
      color: #14211A;
      font-weight: 700;
      padding: 12px 20px;
      border-radius: var(--radius-sm);
      transition: all var(--transition);
      border: none;
      font-size: 14px;
      white-space: nowrap;
    }
    .btn-accent:hover {
      background: var(--accent-dark);
      color: #14211A;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(200, 240, 75, 0.4);
    }
    .btn-outline-light {
      background: transparent;
      border: 1px solid rgba(255,255,255,0.7);
      color: #fff;
      padding: 10px 18px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      transition: all var(--transition);
    }
    .btn-outline-light:hover {
      background: #fff;
      color: var(--primary);
    }
    /* FAQ */
    .faq-list {
      max-width: 800px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      margin-bottom: 12px;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }
    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 20px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text);
      text-align: left;
      background: none;
      border: none;
      cursor: pointer;
      transition: color var(--transition);
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-question .faq-arrow {
      flex-shrink: 0;
      margin-left: 12px;
      width: 18px;
      height: 18px;
      transition: transform var(--transition);
    }
    .faq-item.open .faq-question .faq-arrow {
      transform: rotate(180deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      padding: 0 20px;
      color: var(--text-secondary);
      font-size: 15px;
      line-height: 1.8;
    }
    .faq-item.open .faq-answer {
      max-height: 300px;
      padding: 0 20px 20px;
    }
    .faq-arrow svg {
      width: 18px;
      height: 18px;
      stroke: var(--text-secondary);
    }
    /* Footer */
    .site-footer {
      background: var(--primary-dark);
      color: rgba(255,255,255,0.85);
      padding: 48px 0 24px;
      margin-top: 56px;
    }
    .site-footer .container {
      display: flex;
      flex-wrap: wrap;
      gap: 28px;
      justify-content: space-between;
    }
    .footer-brand {
      flex: 1 1 220px;
      min-width: 200px;
    }
    .footer-brand h3 {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin: 0 0 12px;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      margin: 0;
      color: rgba(255,255,255,0.7);
    }
    .footer-col {
      flex: 1 1 140px;
      min-width: 130px;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
      margin: 0 0 12px;
    }
    .footer-col ul {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-col ul li a {
      color: rgba(255,255,255,0.75);
      font-size: 14px;
      transition: color var(--transition);
    }
    .footer-col ul li a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      flex-basis: 100%;
      border-top: 1px solid rgba(255,255,255,0.12);
      padding-top: 20px;
      margin-top: 12px;
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 13px;
      color: rgba(255,255,255,0.6);
    }
    .footer-bottom .copyright {
      color: rgba(255,255,255,0.7);
    }
    .footer-bottom .beian span {
      margin-right: 12px;
    }
    /* Buttons generic */
    .btn-primary-custom {
      background: var(--primary);
      color: #fff;
      font-weight: 600;
      padding: 12px 20px;
      border-radius: var(--radius-sm);
      transition: all var(--transition);
      font-size: 14px;
    }
    .btn-primary-custom:hover {
      background: var(--accent);
      color: #14211A;
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(200, 240, 75, 0.4);
    }
    .btn-secondary-custom {
      background: var(--bg-card);
      color: var(--primary);
      border: 1px solid var(--border-strong);
      font-weight: 600;
      padding: 10px 18px;
      border-radius: var(--radius-sm);
      transition: all var(--transition);
      font-size: 14px;
    }
    .btn-secondary-custom:hover {
      border-color: var(--primary);
      background: var(--bg-alt);
      color: var(--primary-dark);
    }
    /* Responsive */
    @media (max-width: 1024px) {
      .research-list {
        grid-template-columns: 1fr 1fr;
      }
      .data-term-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .related-topics {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      :root {
        --spacing-section: 40px;
      }
      .research-list {
        grid-template-columns: 1fr;
      }
      .data-term-grid {
        grid-template-columns: 1fr 1fr;
      }
      .related-topics {
        grid-template-columns: 1fr;
      }
      .category-hero-inner {
        flex-direction: column;
        align-items: flex-start;
      }
      .category-hero-img {
        flex: 0 0 auto;
        max-width: 100%;
        width: 100%;
      }
      .category-hero-img img {
        height: 180px;
      }
    }
    @media (max-width: 520px) {
      :root {
        --spacing-section: 32px;
        --font-base: 15px;
      }
      .data-term-grid {
        grid-template-columns: 1fr;
      }
      .subscribe-band .container {
        flex-direction: column;
        align-items: flex-start;
      }
      .subscribe-form {
        width: 100%;
      }
      .subscribe-form input {
        min-width: 100%;
        width: 100%;
      }
      .filter-bar {
        flex-direction: column;
        align-items: flex-start;
      }
    }

/* roulang page: category4 */
:root {
            --primary: #1C5E3A;
            --primary-dark: #154A2D;
            --primary-light: #2A7A4C;
            --accent: #C8F04B;
            --accent-dark: #A8CC33;
            --bg: #F4F6F1;
            --bg-card: #FFFFFF;
            --bg-alt: #E8EDE4;
            --text: #14211A;
            --text-secondary: #5F6E63;
            --text-light: #8A9A8F;
            --border: rgba(0, 0, 0, 0.06);
            --border-strong: rgba(28, 94, 58, 0.2);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(20, 33, 26, 0.05);
            --shadow: 0 6px 18px rgba(20, 33, 26, 0.06);
            --shadow-lg: 0 12px 32px rgba(20, 33, 26, 0.1);
            --font-base: 16px;
            --line-height: 1.8;
            --spacing-section: 56px;
            --spacing-card: 20px;
            --container-max: 1200px;
            --nav-height: 64px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: var(--font-base);
            line-height: var(--line-height);
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: 14px;
        }

        input {
            font-family: inherit;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
        }

        p {
            margin: 0;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            min-height: var(--nav-height);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: var(--nav-height);
            gap: 16px;
            flex-wrap: wrap;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo:hover {
            color: var(--primary-dark);
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 18px;
            height: 18px;
            fill: var(--accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
        }

        .nav-links li a {
            display: block;
            padding: 10px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: var(--radius-sm);
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }

        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            min-width: 44px;
            min-height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-strong);
            background: #fff;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding: 24px 0 0;
            background: var(--bg);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            flex-wrap: wrap;
            background: transparent;
            margin: 0;
            padding: 0;
        }

        .breadcrumb a {
            color: var(--text-secondary);
        }

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

        .breadcrumb .separator {
            color: var(--text-light);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Category H1 */
        .category-hero-section {
            padding: 28px 0 36px;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
        }

        .category-hero-section .container {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .category-hero-section h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            line-height: 1.3;
            max-width: 720px;
        }

        .category-hero-section .category-summary {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }

        .category-hero-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 4px;
        }

        .category-hero-meta .badge-tag {
            display: inline-block;
            padding: 4px 12px;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }

        .category-hero-meta span.count-text {
            font-size: 14px;
            color: var(--text-light);
        }

        /* Filter Bar */
        .filter-bar-section {
            padding: 20px 0;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: var(--nav-height);
            z-index: 50;
        }

        .filter-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .filter-bar .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
            margin-right: 4px;
        }

        .filter-bar .filter-group {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .filter-bar .filter-chip {
            display: inline-block;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            user-select: none;
        }

        .filter-bar .filter-chip:hover {
            border-color: var(--border-strong);
            color: var(--primary);
            background: var(--bg-alt);
        }

        .filter-bar .filter-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        /* Main Content */
        .main-content {
            padding: 40px 0 56px;
            background: var(--bg);
        }

        .main-content .container {
            display: flex;
            flex-direction: column;
            gap: 48px;
        }

        /* Section Common */
        .section-block {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .section-block .section-head {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .section-block .section-head h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.3px;
            position: relative;
            padding-left: 14px;
        }

        .section-block .section-head h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 22px;
            background: var(--accent);
            border-radius: 2px;
        }

        .section-block .section-head .section-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            white-space: nowrap;
        }

        .section-block .section-head .section-link:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        /* Article Cards */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .article-card {
            display: flex;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 16px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            min-height: 170px;
        }

        .article-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .article-card .card-img {
            width: 148px;
            height: 148px;
            flex-shrink: 0;
            overflow: hidden;
            border-radius: var(--radius-sm);
            background: var(--bg-alt);
        }

        .article-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }

        .article-card:hover .card-img img {
            transform: scale(1.02);
        }

        .article-card .card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
            min-width: 0;
        }

        .article-card .card-body .card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
            margin: 0;
        }

        .article-card .card-body .card-title a {
            color: var(--text);
        }

        .article-card .card-body .card-title a:hover {
            color: var(--primary);
        }

        .article-card .card-body .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-light);
        }

        .article-card .card-body .card-meta .meta-tag {
            display: inline-block;
            padding: 2px 10px;
            background: var(--bg-alt);
            color: var(--primary);
            border-radius: 12px;
            font-weight: 500;
            font-size: 12px;
        }

        .article-card .card-body .card-meta .meta-date {
            white-space: nowrap;
        }

        /* Data / Term Cards */
        .term-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .term-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 18px 16px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 8px;
            transition: all var(--transition);
        }

        .term-card:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow);
        }

        .term-card .term-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            flex-shrink: 0;
        }

        .term-card .term-name {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
        }

        .term-card .term-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .term-card .term-value {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .term-card .term-unit {
            font-size: 13px;
            color: var(--text-light);
            font-weight: 400;
        }

        /* Related Topics */
        .related-topics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 14px;
        }

        .related-topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 16px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 8px;
            transition: all var(--transition);
        }

        .related-topic-card:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .related-topic-card .topic-tag {
            display: inline-block;
            align-self: flex-start;
            padding: 3px 10px;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 600;
            border-radius: 12px;
        }

        .related-topic-card .topic-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
        }

        .related-topic-card .topic-title a {
            color: var(--text);
        }

        .related-topic-card .topic-title a:hover {
            color: var(--primary);
        }

        .related-topic-card .topic-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* View More */
        .view-more-wrapper {
            display: flex;
            justify-content: center;
            padding: 8px 0;
        }

        .btn-view-more {
            display: inline-block;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 0.5px;
            text-align: center;
        }

        .btn-view-more:hover {
            background: var(--accent);
            color: var(--text);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(200, 240, 75, 0.35);
        }

        /* Subscription CTA */
        .subscription-section {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-lg);
        }

        .subscription-section .sub-content {
            flex: 1;
            min-width: 260px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .subscription-section .sub-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.3px;
        }

        .subscription-section .sub-content p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.72);
            line-height: 1.7;
        }

        .subscription-section .sub-form {
            display: flex;
            gap: 8px;
            align-items: center;
            flex-shrink: 0;
        }

        .subscription-section .sub-form input {
            width: 220px;
            padding: 12px 16px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            transition: all var(--transition);
        }

        .subscription-section .sub-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .subscription-section .sub-form input:focus {
            outline: none;
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.18);
            box-shadow: 0 0 0 3px rgba(200, 240, 75, 0.25);
        }

        .subscription-section .sub-form .btn-subscribe {
            display: inline-block;
            padding: 12px 22px;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .subscription-section .sub-form .btn-subscribe:hover {
            background: #d5f75a;
            color: var(--text);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
        }

        /* FAQ Section */
        .faq-section .section-block {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border-strong);
        }

        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            user-select: none;
            gap: 12px;
            transition: background var(--transition);
        }

        .faq-item .faq-question:hover {
            background: var(--bg-alt);
        }

        .faq-item .faq-question .faq-q-text {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
        }

        .faq-item .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            transition: transform var(--transition);
            font-weight: 700;
        }

        .faq-item.open .faq-question .faq-arrow {
            transform: rotate(180deg);
            background: var(--accent);
            color: var(--primary-dark);
        }

        .faq-item .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 20px 16px;
        }

        .faq-item .faq-answer p {
            margin: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: #fff;
            padding: 48px 0 24px;
            margin-top: 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .site-footer .container {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            justify-content: space-between;
        }

        .footer-brand {
            flex: 1;
            min-width: 220px;
            max-width: 280px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-brand h3 {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.7;
        }

        .footer-col {
            flex: 0 0 auto;
            min-width: 130px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-col ul li span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            display: block;
            line-height: 1.6;
        }

        .footer-bottom {
            width: 100%;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            margin-top: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom .copyright {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

        .footer-bottom .beian {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: 1fr;
            }

            .term-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .related-topics {
                grid-template-columns: repeat(2, 1fr);
            }

            .subscription-section {
                flex-direction: column;
                align-items: flex-start;
            }

            .subscription-section .sub-form {
                width: 100%;
            }

            .subscription-section .sub-form input {
                flex: 1;
                width: auto;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 40px;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0;
                padding: 8px 0 16px;
                align-items: stretch;
            }

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

            .nav-links li a {
                padding: 14px 16px;
                text-align: left;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }

            .site-header .container {
                flex-wrap: wrap;
            }

            .category-hero-section h1 {
                font-size: 24px;
            }

            .article-card {
                flex-direction: column;
            }

            .article-card .card-img {
                width: 100%;
                height: 160px;
            }

            .term-grid {
                grid-template-columns: 1fr;
            }

            .related-topics {
                grid-template-columns: 1fr;
            }

            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }

            .subscription-section {
                padding: 24px 20px;
            }

            .subscription-section .sub-form {
                flex-direction: column;
                width: 100%;
            }

            .subscription-section .sub-form input {
                width: 100%;
            }

            .main-content {
                padding: 32px 0 40px;
            }

            .main-content .container {
                gap: 36px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            :root {
                --spacing-section: 32px;
                --font-base: 15px;
            }

            .container {
                padding: 0 16px;
            }

            .category-hero-section h1 {
                font-size: 21px;
            }

            .category-hero-section .category-summary {
                font-size: 15px;
            }

            .article-card .card-img {
                height: 140px;
            }

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

            .article-card .card-body .card-summary {
                font-size: 13px;
                -webkit-line-clamp: 2;
            }

            .term-card .term-value {
                font-size: 20px;
            }

            .btn-view-more {
                width: 100%;
                text-align: center;
            }

            .subscription-section .sub-form .btn-subscribe {
                width: 100%;
                text-align: center;
            }

            .footer-brand {
                max-width: 100%;
            }

            .footer-col {
                min-width: 45%;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}