/* roulang page: index */
:root {
            --primary: #1A3C2E;
            --primary-light: #2A5C44;
            --primary-dark: #0F281E;
            --accent: #D8FF3D;
            --accent-soft: #EBFF8F;
            --bg-light: #F4F2ED;
            --bg-white: #FFFFFF;
            --bg-dark: #1E1E1E;
            --bg-dark-soft: #2A2A28;
            --text-dark: #1E1E1E;
            --text-light: #F4F2ED;
            --text-muted: #6B6B66;
            --text-muted-light: #B0B0A8;
            --border: #E0DDD5;
            --border-dark: rgba(255,255,255,0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow: 0 4px 18px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 36px rgba(0,0,0,0.10);
            --transition: 180ms ease;
            --font-sans: 'MiSans', 'HarmonyOS Sans', 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-dark);
            background-color: var(--bg-white);
            overflow-x: hidden;
        }

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

        a:hover {
            opacity: 0.82;
        }

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

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

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

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 700;
            font-size: 18px;
            line-height: 1;
            flex-shrink: 0;
        }

        .logo-text {
            font-weight: 700;
            font-size: 17px;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            flex: 1;
            justify-content: center;
        }

        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-dark);
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }

        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }

        .main-nav a.active {
            color: var(--primary);
        }

        .header-ctas {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: var(--accent);
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(26, 60, 46, 0.25);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-outline:hover {
            background: rgba(26, 60, 46, 0.08);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-light {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }

        .btn-light:hover {
            background: var(--accent-soft);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(216, 255, 61, 0.3);
        }

        .btn-lg {
            padding: 14px 28px;
            font-size: 15px;
            border-radius: var(--radius-md);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: var(--radius-sm);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            cursor: pointer;
            padding: 4px;
            background: none;
            border: none;
        }

        .mobile-toggle span {
            width: 24px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 1px;
            transition: all var(--transition);
            display: block;
        }

        .mobile-toggle.open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }
        .mobile-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .mobile-toggle.open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        /* Mobile menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg-white);
            z-index: 99;
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
            border-top: 1px solid var(--border);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            padding: 14px 12px;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid var(--border);
            color: var(--text-dark);
        }

        .mobile-menu .mobile-ctas {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 16px;
        }

        /* Hero Section */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 80px 0 100px;
            background: var(--bg-dark);
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.35;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 40, 30, 0.88) 0%, rgba(30, 30, 30, 0.72) 55%, rgba(15, 40, 30, 0.9) 100%);
            z-index: 1;
        }

        .hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-bento {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            grid-template-rows: auto auto;
            gap: 18px;
            align-items: stretch;
        }

        .hero-main {
            grid-row: span 2;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-xl);
            padding: 44px 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(216, 255, 61, 0.12);
            border: 1px solid rgba(216, 255, 61, 0.25);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
            width: fit-content;
        }

        .hero-badge .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(0.7); }
        }

        .hero h1 {
            font-size: 30px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.4;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }

        .hero-subtitle {
            font-size: 16px;
            color: rgba(244, 242, 237, 0.82);
            line-height: 1.85;
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-ctas {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-stats {
            display: flex;
            gap: 28px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat-value {
            font-size: 24px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 12px;
            color: rgba(244, 242, 237, 0.65);
            letter-spacing: 0.5px;
        }

        .hero-mini-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: border-color var(--transition), background var(--transition);
        }

        .hero-mini-card:hover {
            border-color: rgba(216, 255, 61, 0.3);
            background: rgba(255, 255, 255, 0.06);
        }

        .hero-mini-card .mini-label {
            font-size: 12px;
            color: rgba(244, 242, 237, 0.6);
            letter-spacing: 0.5px;
            margin-bottom: 8px;
            text-transform: uppercase;
        }

        .hero-mini-card .mini-value {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.3;
            margin-bottom: 4px;
        }

        .hero-mini-card .mini-trend {
            font-size: 13px;
            color: var(--accent);
            font-weight: 600;
        }

        .hero-mini-card .mini-trend.negative {
            color: #FF8A7A;
        }

        .hero-mini-bar {
            width: 100%;
            height: 6px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 3px;
            margin-top: 10px;
            overflow: hidden;
        }

        .hero-mini-bar .fill {
            height: 100%;
            background: var(--accent);
            border-radius: 3px;
            width: 0;
            transition: width 800ms ease;
        }

        /* Sections */
        section {
            padding: 72px 0;
            position: relative;
        }

        .section-alt {
            background: var(--bg-light);
        }

        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .section-dark .section-label {
            color: var(--accent);
        }

        .section-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 12px;
        }

        .section-dark .section-title {
            color: #FFFFFF;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 680px;
        }

        .section-dark .section-desc {
            color: var(--text-muted-light);
        }

        /* Section interior components */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

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

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 26px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
        }

        .card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: #D0CDC5;
        }

        .card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(26, 60, 46, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 14px;
        }

        .card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.5;
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }

        .card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        .card-img-top {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
        }

        /* Problem section */
        .problem-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
            margin-top: 10px;
        }

        .problem-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            color: var(--text-light);
        }

        .problem-item .problem-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .problem-item h3 {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 6px;
        }

        .problem-item p {
            font-size: 13px;
            color: rgba(244, 242, 237, 0.7);
            line-height: 1.7;
        }

        /* Demo */
        .demo-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .demo-visual {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            box-shadow: var(--shadow);
        }

        .demo-visual .demo-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
        }

        .demo-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 14px;
        }

        .demo-row:last-child {
            border-bottom: none;
        }

        .demo-row .label {
            color: var(--text-muted);
        }

        .demo-row .value {
            font-weight: 700;
            color: var(--text-dark);
        }

        .demo-row .value.green {
            color: var(--primary);
        }
        .demo-row .value.red {
            color: #D45A3A;
        }
        .demo-row .value.yellow {
            color: #B88700;
        }

        .demo-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
        }

        .demo-tag.value-bet {
            background: rgba(26, 60, 46, 0.1);
            color: var(--primary);
        }
        .demo-tag.wait {
            background: rgba(184, 135, 0, 0.12);
            color: #B88700;
        }
        .demo-tag.avoid {
            background: rgba(212, 90, 58, 0.1);
            color: #D45A3A;
        }

        /* Result preview */
        .result-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .result-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: all var(--transition);
        }

        .result-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .result-card .result-icon {
            font-size: 32px;
            margin-bottom: 10px;
            display: block;
        }

        .result-card .result-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 4px;
        }

        .result-card .result-value {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
        }

        .result-card .result-note {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 8px;
        }

        /* Scenario grid */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .scenario-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 18px;
            text-align: center;
            transition: all var(--transition);
            cursor: default;
        }

        .scenario-item:hover {
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }

        .scenario-item .scenario-icon {
            font-size: 28px;
            margin-bottom: 8px;
        }

        .scenario-item h3 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .scenario-item p {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.6;
        }

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

        .misread-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 22px;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 12px;
            transition: all var(--transition);
        }

        .misread-card:hover {
            border-color: #CCC9C2;
            box-shadow: var(--shadow);
        }

        .misread-card .misread-wrong {
            font-size: 14px;
            font-weight: 600;
            color: #D45A3A;
            padding-left: 14px;
            border-left: 3px solid #D45A3A;
            line-height: 1.6;
        }

        .misread-card .misread-right {
            font-size: 14px;
            color: var(--text-dark);
            padding-left: 14px;
            border-left: 3px solid var(--primary);
            line-height: 1.7;
        }

        /* Steps */
        .steps-flex {
            display: flex;
            gap: 20px;
            align-items: stretch;
        }

        .step-item {
            flex: 1;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: all var(--transition);
        }

        .step-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }

        .step-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 12px;
        }

        .step-item h3 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

        .step-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .step-arrow {
            position: absolute;
            right: -16px;
            top: 50%;
            transform: translateY(-50%);
            width: 12px;
            height: 12px;
            border-top: 2px solid #CCC;
            border-right: 2px solid #CCC;
            transform: translateY(-50%) rotate(45deg);
            z-index: 1;
        }

        /* Compare */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            max-width: 800px;
            margin: 0 auto;
        }

        .compare-col {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            background: var(--bg-white);
        }

        .compare-col-header {
            padding: 18px 22px;
            font-weight: 700;
            font-size: 15px;
            text-align: center;
        }

        .compare-col-header.ours {
            background: var(--primary);
            color: var(--accent);
        }

        .compare-col-header.traditional {
            background: #E8E5DE;
            color: var(--text-muted);
        }

        .compare-col-body {
            padding: 8px 0;
        }

        .compare-row {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 12px 20px;
            font-size: 14px;
            border-bottom: 1px solid var(--border);
            min-height: 60px;
            text-align: center;
            color: var(--text-dark);
        }

        .compare-row:last-child {
            border-bottom: none;
        }

        .compare-row .check {
            color: var(--primary);
            font-weight: 700;
        }
        .compare-row .cross {
            color: #D45A3A;
            font-weight: 700;
        }

        /* Social proof */
        .proof-row {
            display: flex;
            gap: 28px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .proof-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 28px;
            text-align: center;
            min-width: 160px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .proof-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }

        .proof-item .proof-value {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }

        .proof-item .proof-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* Params */
        .params-table {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .params-row {
            display: grid;
            grid-template-columns: 1fr 1.5fr 2fr;
            align-items: center;
            padding: 16px 22px;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
        }

        .params-row:last-child {
            border-bottom: none;
        }
        .params-row.header-row {
            background: var(--bg-light);
            font-weight: 700;
            font-size: 13px;
            letter-spacing: 0.5px;
            color: var(--text-muted);
        }
        .params-row .param-name {
            font-weight: 700;
            color: var(--text-dark);
        }
        .params-row .param-detail {
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Topic entries */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .topic-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 18px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .topic-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            border-color: var(--primary);
        }

        .topic-card .topic-name {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-dark);
        }

        .topic-card .topic-arrow {
            font-size: 20px;
            color: var(--primary);
            font-weight: 300;
            transition: transform var(--transition);
        }

        .topic-card:hover .topic-arrow {
            transform: translateX(4px);
        }

        /* News */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

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

        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }

        .news-card img {
            width: 100%;
            height: 150px;
            object-fit: cover;
        }

        .news-card-body {
            padding: 18px 20px;
        }

        .news-card-body .news-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 700;
            padding: 3px 8px;
            border-radius: 4px;
            background: rgba(26, 60, 46, 0.08);
            color: var(--primary);
            margin-bottom: 8px;
        }

        .news-card-body h3 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
            line-height: 1.5;
        }

        .news-card-body p {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Brand intro */
        .brand-intro {
            background: var(--bg-light);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 72px 0;
        }

        .brand-intro .container {
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
        }

        .brand-intro .brand-line {
            width: 48px;
            height: 2px;
            background: var(--primary);
            margin: 0 auto 20px;
        }

        .brand-intro h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 22px;
        }

        .brand-intro p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.9;
            text-align: left;
            margin-bottom: 16px;
        }

        .brand-intro p:last-child {
            margin-bottom: 0;
        }

        /* Guarantee */
        .guarantee-row {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .guarantee-item {
            flex: 1;
            min-width: 220px;
            max-width: 280px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 20px 18px;
            text-align: center;
            color: var(--text-light);
        }

        .guarantee-item .guarantee-icon {
            font-size: 26px;
            margin-bottom: 8px;
            display: block;
        }

        .guarantee-item h3 {
            font-size: 14px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 4px;
        }

        .guarantee-item p {
            font-size: 12px;
            color: rgba(244, 242, 237, 0.7);
            line-height: 1.6;
        }

        /* CTA final */
        .cta-final {
            text-align: center;
            padding: 80px 0;
            background: var(--primary);
            color: #FFFFFF;
        }

        .cta-final h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: #FFFFFF;
        }

        .cta-final p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.78);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        /* Bottom sticky CTA */
        .bottom-sticky-cta {
            position: sticky;
            bottom: 0;
            z-index: 90;
            background: rgba(26, 60, 46, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 10px 0;
        }

        .bottom-sticky-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .bottom-sticky-inner .sticky-text {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
        }

        .bottom-sticky-inner .btn {
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 60px 0 0;
            margin-bottom: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand .logo-text {
            color: #FFFFFF;
        }
        .footer-brand p {
            font-size: 13px;
            color: rgba(244, 242, 237, 0.65);
            line-height: 1.7;
        }

        .footer-col h3 {
            font-size: 14px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            font-size: 13px;
            color: rgba(244, 242, 237, 0.65);
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 12px;
            color: rgba(244, 242, 237, 0.45);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-bottom-links {
            display: flex;
            gap: 20px;
            justify-content: center;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .footer-bottom-links a {
            font-size: 12px;
            color: rgba(244, 242, 237, 0.55);
        }
        .footer-bottom-links a:hover {
            color: var(--accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-bento {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
            }
            .hero-main {
                grid-row: auto;
                padding: 32px 28px;
            }
            .hero {
                min-height: auto;
                padding: 60px 0 80px;
            }
            .problem-list,
            .result-cards,
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .params-row {
                grid-template-columns: 1fr 1.5fr;
            }
            .params-row .param-detail {
                grid-column: span 2;
            }
            .compare-grid {
                max-width: 100%;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
            }

            .main-nav {
                display: none;
            }
            .header-ctas .btn-outline {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
            .hero h1 {
                font-size: 24px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat-value {
                font-size: 20px;
            }
            section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 19px;
            }
            .grid-3,
            .grid-2,
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .problem-list,
            .result-cards,
            .news-grid,
            .scenario-grid,
            .topic-grid,
            .misread-grid {
                grid-template-columns: 1fr;
            }
            .demo-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .steps-flex {
                flex-direction: column;
            }
            .step-arrow {
                display: none;
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .bottom-sticky-inner {
                flex-direction: column;
                text-align: center;
                padding: 8px 0;
            }
            .bottom-sticky-inner .sticky-text {
                font-size: 12px;
            }
            .bottom-sticky-inner .btn {
                width: 100%;
            }
            .brand-intro p {
                text-align: left;
                font-size: 14px;
            }
            .hero-bento {
                gap: 12px;
            }
            .hero-main {
                padding: 24px 20px;
            }
            .hero-mini-card {
                padding: 18px 16px;
            }
            .proof-row {
                gap: 12px;
            }
            .proof-item {
                min-width: 120px;
                padding: 16px 18px;
            }
            .params-row {
                grid-template-columns: 1fr;
                padding: 12px 16px;
            }
            .params-row .param-detail {
                grid-column: auto;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero h1 {
                font-size: 21px;
            }
            .hero-ctas {
                flex-direction: column;
                width: 100%;
            }
            .hero-ctas .btn {
                width: 100%;
            }
            .hero-stats {
                flex-direction: column;
                gap: 10px;
            }
            .hero-stat-value {
                font-size: 18px;
            }
            .section-title {
                font-size: 17px;
            }
            .card h3 {
                font-size: 14px;
            }
            .card p,
            .section-desc {
                font-size: 13px;
            }
            .btn {
                font-size: 13px;
                padding: 9px 16px;
            }
            .btn-lg {
                padding: 12px 20px;
                font-size: 14px;
            }
            .footer-bottom-links {
                gap: 12px;
                flex-wrap: wrap;
            }
        }

/* roulang page: category2 */
:root {
      --primary: #1A3C2E;
      --primary-light: #2A5C44;
      --primary-dark: #0F281E;
      --accent: #D8FF3D;
      --accent-soft: #EBFF8F;
      --bg-light: #F4F2ED;
      --bg-white: #FFFFFF;
      --bg-dark: #1E1E1E;
      --bg-dark-soft: #2A2A28;
      --text-dark: #1E1E1E;
      --text-light: #F4F2ED;
      --text-muted: #6B6B66;
      --text-muted-light: #B0B0A8;
      --border: #E0DDD5;
      --border-dark: rgba(255,255,255,0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 18px;
      --radius-xl: 24px;
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
      --shadow: 0 4px 18px rgba(0,0,0,0.06);
      --shadow-lg: 0 12px 36px rgba(0,0,0,0.10);
      --transition: 180ms ease;
      --font-sans: 'MiSans', 'HarmonyOS Sans', 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
      --container: 1200px;
      --header-height: 64px;
    }

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

    html {
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      scroll-padding-top: calc(var(--header-height) + 16px);
    }

    body {
      font-family: var(--font-sans);
      font-size: 16px;
      line-height: 1.85;
      color: var(--text-dark);
      background-color: var(--bg-white);
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--transition), opacity var(--transition), background var(--transition);
    }

    a:hover {
      opacity: 0.82;
    }

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

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

    .container {
      width: 100%;
      max-width: var(--container);
      margin: 0 auto;
      padding: 0 24px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border);
      height: var(--header-height);
      display: flex;
      align-items: center;
      transition: box-shadow var(--transition);
    }

    .site-header.scrolled {
      box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      width: 100%;
      position: relative;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
      font-weight: 700;
    }

    .logo-icon {
      width: 36px;
      height: 36px;
      border-radius: var(--radius-sm);
      background: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-weight: 700;
      font-size: 18px;
      line-height: 1;
      flex-shrink: 0;
    }

    .logo-text {
      font-weight: 700;
      font-size: 17px;
      color: var(--primary-dark);
      letter-spacing: 0.5px;
      white-space: nowrap;
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 30px;
      flex: 1;
      justify-content: center;
    }

    .main-nav a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-dark);
      padding: 8px 2px;
      position: relative;
      white-space: nowrap;
    }

    .main-nav a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: width var(--transition);
    }

    .main-nav a:hover::after,
    .main-nav a.active::after {
      width: 100%;
    }

    .main-nav a.active {
      color: var(--primary);
    }

    .header-ctas {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      transition: all var(--transition);
      line-height: 1.4;
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--primary);
      color: var(--accent);
      border-color: var(--primary);
    }

    .btn-primary:hover {
      background: var(--primary-light);
      border-color: var(--primary-light);
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(26, 60, 46, 0.25);
      opacity: 1;
    }

    .btn-outline {
      background: transparent;
      color: var(--primary);
      border-color: var(--primary);
    }

    .btn-outline:hover {
      background: rgba(26, 60, 46, 0.08);
      border-color: var(--primary-dark);
      transform: translateY(-1px);
      opacity: 1;
    }

    .btn-light {
      background: var(--accent);
      color: var(--primary-dark);
      border-color: var(--accent);
    }

    .btn-light:hover {
      background: var(--accent-soft);
      border-color: var(--accent-soft);
      transform: translateY(-1px);
      opacity: 1;
    }

    .nav-toggle {
      display: none;
      flex-direction: column;
      width: 40px;
      height: 40px;
      align-items: center;
      justify-content: center;
      gap: 5px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border);
      background: var(--bg-white);
      cursor: pointer;
      transition: border-color var(--transition), background var(--transition);
    }

    .nav-toggle span {
      width: 18px;
      height: 2px;
      background: var(--primary-dark);
      transition: transform var(--transition), opacity var(--transition);
    }

    .nav-toggle:hover {
      border-color: var(--primary);
      background: var(--bg-light);
    }

    .section {
      padding: 64px 0;
    }

    .section.bg-light {
      background: var(--bg-light);
    }

    .section-heading {
      max-width: 760px;
      margin-bottom: 32px;
    }

    .section-heading h2 {
      font-size: 20px;
      line-height: 1.4;
      color: var(--primary-dark);
      letter-spacing: 0.5px;
      margin-bottom: 10px;
    }

    .section-heading p {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 660px;
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 18px;
    }

    .breadcrumb a {
      color: var(--primary);
      font-weight: 500;
    }

    .breadcrumb span {
      color: var(--text-muted);
    }

    .cat-hero {
      position: relative;
      background-size: cover;
      background-position: center;
      background-color: var(--primary-dark);
      min-height: 36vh;
      padding: 56px 0 48px;
      overflow: hidden;
    }

    .cat-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(105deg, rgba(15, 40, 30, 0.92) 0%, rgba(26, 60, 46, 0.82) 48%, rgba(26, 60, 46, 0.70) 100%);
      z-index: 1;
    }

    .cat-hero-inner {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.25fr 0.75fr;
      gap: 32px;
      align-items: center;
    }

    .cat-hero-copy .breadcrumb {
      color: var(--text-muted-light);
      margin-bottom: 14px;
    }

    .cat-hero-copy .breadcrumb a {
      color: var(--accent);
    }

    .cat-hero-copy h1 {
      font-size: 28px;
      line-height: 1.3;
      color: var(--text-light);
      letter-spacing: 0.8px;
      margin-bottom: 14px;
    }

    .cat-hero-lead {
      font-size: 16px;
      color: rgba(244, 242, 237, 0.85);
      max-width: 720px;
      margin-bottom: 18px;
    }

    .cat-hero-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .pill {
      display: inline-flex;
      align-items: center;
      padding: 6px 14px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.10);
      border: 1px solid rgba(255, 255, 255, 0.18);
      color: var(--text-light);
      font-size: 13px;
      font-weight: 500;
    }

    .pill.accent {
      background: var(--accent);
      color: var(--primary-dark);
      border-color: var(--accent);
    }

    .cat-hero-media {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 18px 40px rgba(0, 0, 0, 0.24);
      border: 1px solid rgba(255, 255, 255, 0.12);
      background: rgba(255, 255, 255, 0.08);
    }

    .cat-hero-media img {
      width: 100%;
      height: 220px;
      object-fit: cover;
    }

    .filter-bar {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 28px;
    }

    .filter-chip {
      padding: 8px 16px;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: var(--bg-white);
      color: var(--text-dark);
      font-size: 14px;
      font-weight: 500;
      cursor: pointer;
      transition: all var(--transition);
    }

    .filter-chip:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    .filter-chip.active {
      background: var(--primary);
      border-color: var(--primary);
      color: var(--accent);
    }

    .compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .compare-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-sm);
      transition: box-shadow var(--transition), transform var(--transition);
    }

    .compare-card:hover {
      box-shadow: var(--shadow);
      transform: translateY(-3px);
    }

    .compare-card-head {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 12px;
    }

    .compare-card-head h3 {
      font-size: 17px;
      line-height: 1.5;
      color: var(--primary-dark);
      letter-spacing: 0.3px;
    }

    .tag {
      flex-shrink: 0;
      padding: 4px 10px;
      border-radius: 999px;
      background: var(--bg-light);
      color: var(--primary);
      font-size: 12px;
      font-weight: 600;
    }

    .compare-card p {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 18px;
    }

    .compare-metrics {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      border-top: 1px dashed var(--border);
      padding-top: 16px;
    }

    .metric {
      display: flex;
      flex-direction: column;
      gap: 2px;
      min-width: 80px;
    }

    .metric span {
      font-size: 13px;
      color: var(--text-muted);
    }

    .metric strong {
      font-size: 17px;
      color: var(--primary-dark);
      font-weight: 700;
    }

    .list-more {
      display: flex;
      justify-content: flex-end;
      margin-top: 24px;
    }

    .list-more a {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-weight: 600;
      color: var(--primary);
      font-size: 14px;
    }

    .list-more a span {
      font-size: 18px;
      line-height: 1;
    }

    .param-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 12px;
    }

    .param-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-sm);
    }

    .param-card h3 {
      font-size: 16px;
      color: var(--primary-dark);
      margin-bottom: 10px;
    }

    .param-card p {
      font-size: 15px;
      color: var(--text-muted);
    }

    .apply-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-top: 12px;
    }

    .apply-panel {
      background: var(--bg-light);
      border-left: 4px solid var(--primary);
      border-radius: var(--radius-md);
      padding: 24px;
    }

    .apply-panel.alt {
      border-left-color: var(--accent);
      background: rgba(216, 255, 61, 0.08);
    }

    .apply-panel h3 {
      font-size: 17px;
      color: var(--primary-dark);
      margin-bottom: 10px;
    }

    .apply-panel p {
      font-size: 15px;
      color: var(--text-muted);
    }

    .conclusion-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 12px;
    }

    .conclusion-item {
      display: flex;
      gap: 12px;
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 18px;
      box-shadow: var(--shadow-sm);
    }

    .conclusion-index {
      flex-shrink: 0;
      width: 30px;
      height: 30px;
      border-radius: var(--radius-sm);
      background: var(--primary);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }

    .conclusion-item p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .article-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 12px;
    }

    .article-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: box-shadow var(--transition), transform var(--transition);
    }

    .article-card:hover {
      box-shadow: var(--shadow);
      transform: translateY(-3px);
    }

    .article-card img {
      width: 100%;
      height: 150px;
      object-fit: cover;
    }

    .article-card-body {
      padding: 20px;
    }

    .article-card-body h3 {
      font-size: 16px;
      color: var(--primary-dark);
      margin-bottom: 10px;
      line-height: 1.5;
    }

    .article-card-body p {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .article-card-body a {
      font-weight: 600;
      color: var(--primary);
      font-size: 14px;
    }

    .site-footer {
      background: var(--bg-dark);
      color: var(--text-muted-light);
      padding: 56px 0 18px;
      margin-top: 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 36px;
      border-bottom: 1px solid var(--border-dark);
    }

    .footer-brand .logo {
      color: var(--text-light);
      margin-bottom: 16px;
    }

    .footer-brand .logo-text {
      color: var(--text-light);
    }

    .footer-brand p {
      font-size: 14px;
      color: var(--text-muted-light);
      line-height: 1.8;
    }

    .footer-col h3 {
      font-size: 15px;
      color: var(--text-light);
      margin-bottom: 16px;
      letter-spacing: 0.4px;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-col ul li a {
      font-size: 14px;
      color: var(--text-muted-light);
      transition: color var(--transition);
    }

    .footer-col ul li a:hover {
      color: var(--accent);
      opacity: 1;
    }

    .footer-bottom {
      padding-top: 22px;
      display: flex;
      flex-direction: column;
      gap: 14px;
      font-size: 13px;
      color: var(--text-muted-light);
    }

    .footer-bottom-links {
      display: flex;
      flex-wrap: wrap;
      gap: 18px;
    }

    .footer-bottom-links a {
      color: var(--text-muted-light);
      font-size: 13px;
    }

    .footer-bottom-links a:hover {
      color: var(--accent);
      opacity: 1;
    }

    @media (max-width: 1024px) {
      .main-nav {
        gap: 20px;
      }

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

      .article-list {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 820px) {
      .main-nav {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--bg-white);
        border-bottom: 1px solid var(--border);
        padding: 18px 24px 24px;
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
      }

      .site-header.nav-open .main-nav {
        display: flex;
      }

      .header-ctas .btn-outline {
        display: none;
      }

      .nav-toggle {
        display: flex;
      }

      .cat-hero-inner {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .cat-hero-media img {
        height: 180px;
      }

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

      .param-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
      }

      .apply-grid {
        grid-template-columns: 1fr;
        gap: 16px;
      }

      .conclusion-list {
        grid-template-columns: 1fr;
        gap: 14px;
      }

      .article-list {
        grid-template-columns: 1fr;
        gap: 16px;
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }

    @media (max-width: 520px) {
      .section {
        padding: 48px 0;
      }

      .cat-hero {
        min-height: 32vh;
        padding: 44px 0 36px;
      }

      .cat-hero-copy h1 {
        font-size: 23px;
      }

      .cat-hero-lead {
        font-size: 15px;
      }

      .filter-bar {
        gap: 8px;
        margin-bottom: 20px;
      }

      .filter-chip {
        padding: 7px 13px;
        font-size: 13px;
      }

      .compare-card {
        padding: 18px;
      }

      .param-grid {
        grid-template-columns: 1fr;
        gap: 14px;
      }

      .param-card {
        padding: 18px;
      }

      .apply-panel {
        padding: 18px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .footer-bottom {
        gap: 12px;
      }
    }

/* roulang page: category1 */
:root{
  --primary:#1A3C2E;
  --primary-light:#2A5C44;
  --primary-dark:#0F281E;
  --accent:#D8FF3D;
  --accent-soft:#EBFF8F;
  --bg-light:#F4F2ED;
  --bg-white:#FFFFFF;
  --bg-dark:#1E1E1E;
  --bg-dark-soft:#2A2A28;
  --text-dark:#1E1E1E;
  --text-light:#F4F2ED;
  --text-muted:#6B6B66;
  --text-muted-light:#B0B0A8;
  --border:#E0DDD5;
  --border-dark:rgba(255,255,255,0.12);
  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:18px;
  --radius-xl:24px;
  --shadow-sm:0 2px 8px rgba(0,0,0,0.04);
  --shadow:0 4px 18px rgba(0,0,0,0.06);
  --shadow-lg:0 12px 36px rgba(0,0,0,0.10);
  --transition:180ms ease;
  --font-sans:'MiSans','HarmonyOS Sans','Inter','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --container:1200px;
  --header-height:72px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{font-family:var(--font-sans);font-size:16px;line-height:1.85;color:var(--text-dark);background-color:var(--bg-white);overflow-x:hidden}
a{color:inherit;text-decoration:none;transition:color var(--transition),opacity var(--transition)}
a:hover{opacity:.82}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit;border:none;outline:none;background:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:64px 0}
.section-alt{background:var(--bg-light)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:1px;color:var(--primary);text-transform:uppercase;margin-bottom:8px}
.section-title{font-size:24px;font-weight:700;line-height:1.3;color:var(--text-dark);margin-bottom:12px}
.section-sub{font-size:15px;color:var(--text-muted);max-width:680px}
/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.94);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);height:var(--header-height);display:flex;align-items:center;transition:box-shadow var(--transition)}
.site-header.scrolled{box-shadow:0 2px 16px rgba(0,0,0,0.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:36px;height:36px;border-radius:var(--radius-sm);background:var(--primary);display:flex;align-items:center;justify-content:center;color:var(--accent);font-weight:700;font-size:18px;line-height:1;flex-shrink:0}
.logo-text{font-weight:700;font-size:17px;color:var(--primary-dark);letter-spacing:0.5px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:32px;flex:1;justify-content:center}
.main-nav a{font-size:15px;font-weight:500;color:var(--text-dark);padding:8px 2px;position:relative;white-space:nowrap}
.main-nav a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--primary);transition:width var(--transition)}
.main-nav a:hover::after,.main-nav a.active::after{width:100%}
.main-nav a.active{color:var(--primary)}
.header-ctas{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;cursor:pointer;transition:all var(--transition);line-height:1.4;border:1px solid transparent;white-space:nowrap}
.btn-primary{background:var(--primary);color:var(--accent);border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-light);border-color:var(--primary-light);transform:translateY(-1px);box-shadow:0 6px 16px rgba(26,60,46,0.25)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:rgba(26,60,46,0.08);border-color:var(--primary-dark);transform:translateY(-1px)}
.btn-light{background:var(--accent);color:var(--primary-dark);border-color:var(--accent)}
.btn-light:hover{background:var(--accent-soft);border-color:var(--accent-soft);transform:translateY(-1px)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:var(--radius-sm);background:var(--bg-light);color:var(--primary);font-size:22px;line-height:1}
/* Category Hero */
.cat-hero{background:var(--bg-light);padding:36px 0 44px;border-bottom:1px solid var(--border)}
.cat-hero-grid{display:grid;grid-template-columns:1.2fr 0.8fr;gap:32px;align-items:center}
.cat-hero-text .breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);margin-bottom:12px}
.cat-hero-text .breadcrumb a:hover{color:var(--primary)}
.cat-hero-text h1{font-size:30px;font-weight:700;line-height:1.25;color:var(--primary-dark);letter-spacing:-0.5px;margin-bottom:12px}
.cat-hero-text p{font-size:16px;color:var(--text-muted);max-width:580px}
.cat-hero-media img{width:100%;height:280px;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}
/* Section head */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);white-space:nowrap}
.text-link:hover{color:var(--primary-light)}
/* Filter bar */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.filter-chip{padding:8px 16px;border-radius:999px;border:1px solid var(--border);background:var(--bg-white);font-size:14px;font-weight:500;color:var(--text-muted);cursor:pointer;transition:all var(--transition)}
.filter-chip:hover{border-color:var(--primary);color:var(--primary)}
.filter-chip.active{background:var(--primary);color:var(--accent);border-color:var(--primary)}
/* Calc list */
.calc-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.calc-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition);display:flex;flex-direction:column}
.calc-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#ccc}
.calc-card img{width:100%;height:160px;object-fit:cover}
.calc-card-body{padding:20px;display:flex;flex-direction:column;flex:1}
.card-tags{display:flex;gap:8px;margin-bottom:10px}
.tag{display:inline-flex;padding:4px 10px;border-radius:999px;background:var(--bg-light);color:var(--primary);font-size:12px;font-weight:600}
.calc-card h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--text-dark)}
.calc-card p{font-size:14px;color:var(--text-muted);line-height:1.7;margin-bottom:16px}
.metric-row{border-top:1px solid var(--border);padding-top:14px;display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:14px}
.metric-row span{font-size:12px;color:var(--text-muted);display:flex;flex-direction:column}
.metric-row strong{font-size:15px;color:var(--primary-dark);font-weight:700;margin-top:2px}
.card-link{font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:4px;margin-top:auto}
.card-link:hover{color:var(--primary-light)}
/* Params */
.param-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.param-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;transition:all var(--transition)}
.param-card:hover{box-shadow:var(--shadow);border-color:#ccc}
.param-icon{width:46px;height:46px;border-radius:var(--radius-md);background:var(--primary);display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:22px;margin-bottom:16px}
.param-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.param-card p{font-size:14px;color:var(--text-muted);line-height:1.75}
/* Scene */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.scene-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;transition:all var(--transition)}
.scene-card:hover{box-shadow:var(--shadow-lg)}
.scene-card h3{font-size:20px;font-weight:700;margin-bottom:12px;color:var(--primary-dark)}
.scene-card p{font-size:15px;color:var(--text-muted);line-height:1.8;margin-bottom:16px}
.scene-list{list-style:none;display:flex;flex-direction:column;gap:10px}
.scene-list li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text-dark)}
.scene-list li::before{content:'●';color:var(--accent);font-size:12px;line-height:1.6}
/* Misread */
.misread-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.misread-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px}
.misread-card h3{font-size:17px;font-weight:700;margin-bottom:8px;display:flex;gap:8px;align-items:center}
.misread-card h3 span:first-child{color:var(--primary);font-size:20px}
.misread-card p{font-size:14px;color:var(--text-muted);line-height:1.75}
/* Stats band */
.stats-section{background:var(--bg-dark);padding:64px 0}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;text-align:center}
.stat-item .stat-num{font-size:36px;font-weight:700;color:var(--accent);display:block;margin-bottom:6px}
.stat-item .stat-label{font-size:14px;color:var(--text-muted-light)}
/* Articles */
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.article-card{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--transition)}
.article-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.article-card img{width:100%;height:180px;object-fit:cover}
.article-card-body{padding:20px}
.article-card-body h3{font-size:17px;font-weight:700;margin-bottom:8px;line-height:1.4}
.article-card-body p{font-size:14px;color:var(--text-muted);margin-bottom:12px}
.article-meta{font-size:13px;color:var(--text-muted);display:flex;gap:16px}
/* CTA */
.cta-section{background:var(--primary);padding:72px 0;text-align:center}
.cta-section h2{font-size:26px;font-weight:700;color:var(--accent);margin-bottom:12px}
.cta-section p{color:rgba(244,242,237,0.85);max-width:560px;margin:0 auto 28px}
/* Footer */
.site-footer{background:var(--bg-dark);color:var(--text-light);padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.2fr 0.8fr 0.8fr 0.8fr;gap:40px;margin-bottom:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text{color:var(--text-light)}
.footer-brand p{font-size:14px;color:var(--text-muted-light);line-height:1.75;max-width:340px}
.footer-col h3{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text-light)}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-muted-light);transition:color var(--transition)}
.footer-col a:hover{color:var(--accent);opacity:1}
.footer-bottom{border-top:1px solid var(--border-dark);padding-top:24px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.footer-bottom-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom-links a{font-size:13px;color:var(--text-muted-light)}
.footer-bottom-links a:hover{color:var(--accent)}
.footer-bottom span{font-size:13px;color:var(--text-muted-light)}
/* Responsive */
@media (max-width:1024px){
  .calc-list{grid-template-columns:repeat(2,1fr)}
  .param-grid{grid-template-columns:repeat(2,1fr)}
  .article-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  :root{--header-height:60px}
  .main-nav{position:absolute;top:var(--header-height);left:0;right:0;background:var(--bg-white);border-bottom:1px solid var(--border);padding:16px 24px;flex-direction:column;align-items:flex-start;gap:12px;display:none;box-shadow:var(--shadow)}
  .main-nav.open{display:flex}
  .main-nav a{width:100%}
  .nav-toggle{display:block}
  .header-ctas .btn-outline{display:none}
  .header-inner{gap:12px}
  .cat-hero-grid{grid-template-columns:1fr}
  .cat-hero-media img{height:200px}
  .calc-list{grid-template-columns:1fr}
  .param-grid{grid-template-columns:1fr}
  .article-grid{grid-template-columns:1fr}
  .misread-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr;gap:24px}
  .section-head{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .section{padding:44px 0}
  .cat-hero-text h1{font-size:24px}
  .btn{padding:9px 16px;font-size:13px}
  .metric-row{grid-template-columns:1fr 1fr;gap:6px}
  .metric-row span{font-size:11px}
  .metric-row strong{font-size:13px}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category3 */
:root {
            --primary: #1A3C2E;
            --primary-light: #2A5C44;
            --primary-dark: #0F281E;
            --accent: #D8FF3D;
            --accent-soft: #EBFF8F;
            --bg-light: #F4F2ED;
            --bg-white: #FFFFFF;
            --bg-dark: #1E1E1E;
            --bg-dark-soft: #2A2A28;
            --text-dark: #1E1E1E;
            --text-light: #F4F2ED;
            --text-muted: #6B6B66;
            --text-muted-light: #B0B0A8;
            --border: #E0DDD5;
            --border-dark: rgba(255,255,255,0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow: 0 4px 18px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 36px rgba(0,0,0,0.10);
            --transition: 180ms ease;
            --font-sans: 'MiSans', 'HarmonyOS Sans', 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container: 1200px;
            --header-height: 72px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-dark);
            background-color: var(--bg-white);
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), opacity var(--transition);
        }
        a:hover {
            opacity: 0.82;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-weight: 700;
            font-size: 18px;
            line-height: 1;
            flex-shrink: 0;
        }
        .logo-text {
            font-weight: 700;
            font-size: 17px;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            flex: 1;
            justify-content: center;
        }
        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-dark);
            padding: 8px 2px;
            position: relative;
            white-space: nowrap;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--primary);
        }
        .header-ctas {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            line-height: 1.4;
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--accent);
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(26, 60, 46, 0.25);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: rgba(26, 60, 46, 0.08);
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-light {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
        }
        .btn-light:hover {
            background: var(--accent-soft);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(216, 255, 61, 0.45);
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .mobile-toggle {
            display: none;
            font-size: 22px;
            color: var(--primary-dark);
            cursor: pointer;
            padding: 4px;
            line-height: 1;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px 24px;
            z-index: 99;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            padding: 12px 4px;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid var(--border);
            color: var(--text-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .mobile-menu a:last-child {
            border-bottom: none;
        }
        .mobile-menu .btn {
            margin-top: 8px;
        }

        .page-header {
            padding: 28px 0 20px;
            background: linear-gradient(180deg, #F4F2ED 0%, #FFFFFF 100%);
            border-bottom: 1px solid var(--border);
            min-height: 36vh;
            display: flex;
            align-items: center;
        }
        .page-header .breadcrumb-wrap {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .page-header .breadcrumb-wrap a {
            color: var(--text-muted);
        }
        .page-header .breadcrumb-wrap a:hover {
            color: var(--primary);
            opacity: 1;
        }
        .page-header .breadcrumb-wrap .sep {
            color: #B0AEA6;
        }
        .page-header .breadcrumb-wrap .current {
            color: var(--primary);
            font-weight: 500;
        }
        .page-header h1 {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary-dark);
            margin: 0 0 10px;
            line-height: 1.45;
            letter-spacing: 0.3px;
        }
        .page-header .page-summary {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 820px;
            line-height: 1.9;
            margin: 0;
        }
        .page-header .header-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 14px;
        }
        .page-header .header-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .page-header .header-meta i {
            color: var(--primary-light);
            font-size: 14px;
        }

        .section {
            padding: 56px 0;
        }
        .section-alt {
            background: var(--bg-light);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-head {
            margin-bottom: 36px;
        }
        .section-head h2 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-dark);
            margin: 0 0 10px;
            line-height: 1.5;
        }
        .section-head .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 720px;
            line-height: 1.85;
            margin: 0;
        }
        .section-dark .section-head h2 {
            color: var(--text-light);
        }
        .section-dark .section-head .section-desc {
            color: var(--text-muted-light);
        }

        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            margin-bottom: 28px;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--border);
            color: var(--text-muted);
            background: var(--bg-white);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .filter-tag.active {
            background: var(--primary);
            border-color: var(--primary);
            color: var(--accent);
        }
        .filter-tag i {
            font-size: 12px;
        }

        .prediction-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .prediction-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: #CFCCC2;
        }
        .prediction-card .card-img {
            height: 170px;
            overflow: hidden;
            position: relative;
            flex-shrink: 0;
        }
        .prediction-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }
        .prediction-card:hover .card-img img {
            transform: scale(1.04);
        }
        .prediction-card .card-img .badge-overlay {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(26, 60, 46, 0.88);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.3px;
        }
        .prediction-card .card-body {
            padding: 20px 20px 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .prediction-card .card-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary-dark);
            margin: 0 0 10px;
            line-height: 1.5;
        }
        .prediction-card .card-body .card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0 0 14px;
            flex: 1;
        }
        .prediction-card .metrics-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 14px;
        }
        .prediction-card .metrics-row .metric-chip {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 6px;
            font-size: 12px;
            padding: 4px 10px;
            color: var(--text-muted);
        }
        .prediction-card .metrics-row .metric-chip i {
            font-size: 10px;
            color: var(--primary-light);
        }
        .prediction-card .card-footer-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            transition: all var(--transition);
        }
        .prediction-card .card-footer-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }
        .prediction-card .card-footer-link:hover {
            color: var(--primary-light);
            opacity: 1;
        }
        .prediction-card .card-footer-link:hover i {
            transform: translateX(4px);
        }

        .param-strip {
            background: var(--bg-dark);
            border-radius: var(--radius-lg);
            padding: 28px 28px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .param-strip .param-item {
            border-right: 1px solid var(--border-dark);
            padding-right: 20px;
        }
        .param-strip .param-item:last-child {
            border-right: none;
        }
        .param-strip .param-item .param-label {
            font-size: 12px;
            color: var(--text-muted-light);
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 4px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .param-strip .param-item .param-label i {
            color: var(--accent);
            font-size: 12px;
        }
        .param-strip .param-item .param-value {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-light);
            line-height: 1.5;
        }
        .param-strip .param-item .param-note {
            font-size: 13px;
            color: var(--text-muted-light);
            line-height: 1.7;
            margin-top: 4px;
        }

        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .scenario-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition);
        }
        .scenario-card:hover {
            border-color: #CFCCC2;
            box-shadow: var(--shadow);
        }
        .scenario-card .scenario-icon {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: rgba(26, 60, 46, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            margin-bottom: 14px;
        }
        .scenario-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary-dark);
            margin: 0 0 10px;
        }
        .scenario-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0;
        }

        .qa-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
        }
        .qa-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            transition: all var(--transition);
        }
        .qa-item:hover {
            border-color: #CFCCC2;
            box-shadow: var(--shadow-sm);
        }
        .qa-item .qa-q {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 8px;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .qa-item .qa-q i {
            color: var(--primary-light);
            font-size: 14px;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .qa-item .qa-a {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0;
            padding-left: 22px;
        }

        .conclusion-box {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            align-items: center;
            justify-content: space-between;
        }
        .conclusion-box .conclusion-text {
            flex: 1;
            min-width: 260px;
        }
        .conclusion-box .conclusion-text h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary-dark);
            margin: 0 0 10px;
        }
        .conclusion-box .conclusion-text p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.8;
        }
        .conclusion-box .conclusion-stats {
            display: flex;
            gap: 24px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }
        .conclusion-box .conclusion-stats .stat {
            text-align: center;
            min-width: 70px;
        }
        .conclusion-box .conclusion-stats .stat .num {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            display: block;
            line-height: 1.3;
        }
        .conclusion-box .conclusion-stats .stat .lbl {
            font-size: 12px;
            color: var(--text-muted);
        }

        .reading-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        .reading-card {
            display: flex;
            align-items: center;
            gap: 14px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 18px;
            transition: all var(--transition);
        }
        .reading-card:hover {
            border-color: #CFCCC2;
            box-shadow: var(--shadow-sm);
        }
        .reading-card .reading-num {
            font-size: 28px;
            font-weight: 700;
            color: #D8D5CC;
            flex-shrink: 0;
            line-height: 1;
        }
        .reading-card .reading-info {
            flex: 1;
            min-width: 0;
        }
        .reading-card .reading-info h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary-dark);
            margin: 0 0 4px;
            line-height: 1.5;
        }
        .reading-card .reading-info p {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }
        .reading-card .reading-arrow {
            color: var(--primary-light);
            font-size: 14px;
            flex-shrink: 0;
        }

        .cta-banner {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
        }
        .cta-banner .cta-text h2 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-light);
            margin: 0 0 8px;
        }
        .cta-banner .cta-text p {
            font-size: 15px;
            color: var(--text-muted-light);
            margin: 0;
            line-height: 1.8;
        }
        .cta-banner .btn {
            flex-shrink: 0;
        }

        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 56px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border-dark);
        }
        .site-footer .footer-brand .logo {
            margin-bottom: 14px;
        }
        .site-footer .footer-brand .logo-text {
            color: var(--text-light);
        }
        .site-footer .footer-brand .logo-icon {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .site-footer .footer-brand p {
            font-size: 14px;
            color: var(--text-muted-light);
            line-height: 1.8;
            margin: 0;
            max-width: 360px;
        }
        .site-footer .footer-col h3 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-light);
            margin: 0 0 14px;
            letter-spacing: 0.5px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted-light);
            transition: color var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--accent);
            opacity: 1;
        }
        .site-footer .footer-bottom {
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .site-footer .footer-bottom .footer-bottom-links {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
        }
        .site-footer .footer-bottom .footer-bottom-links a {
            font-size: 13px;
            color: var(--text-muted-light);
        }
        .site-footer .footer-bottom .footer-bottom-links a:hover {
            color: var(--accent);
            opacity: 1;
        }
        .site-footer .footer-bottom > span {
            font-size: 13px;
            color: var(--text-muted-light);
        }

        @media (max-width: 1024px) {
            .main-nav {
                gap: 20px;
            }
            .main-nav a {
                font-size: 14px;
            }
            .param-strip {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .param-strip .param-item {
                border-right: none;
                padding-right: 0;
                border-bottom: 1px solid var(--border-dark);
                padding-bottom: 14px;
            }
            .param-strip .param-item:last-child {
                border-bottom: none;
                padding-bottom: 0;
            }
            .reading-list {
                grid-template-columns: 1fr 1fr;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
            }
            .main-nav {
                display: none;
            }
            .header-ctas .btn-outline {
                display: none;
            }
            .mobile-toggle {
                display: flex;
                align-items: center;
                gap: 6px;
            }
            .page-header {
                min-height: 30vh;
                padding: 20px 0 16px;
            }
            .page-header h1 {
                font-size: 20px;
            }
            .page-header .page-summary {
                font-size: 14px;
            }
            .section {
                padding: 40px 0;
            }
            .section-head h2 {
                font-size: 18px;
            }
            .scenario-grid,
            .qa-grid {
                grid-template-columns: 1fr;
            }
            .reading-list {
                grid-template-columns: 1fr;
            }
            .conclusion-box {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-banner {
                flex-direction: column;
                align-items: flex-start;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .prediction-card .card-img {
                height: 140px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-ctas .btn-primary {
                padding: 8px 14px;
                font-size: 13px;
            }
            .logo-text {
                font-size: 15px;
            }
            .page-header h1 {
                font-size: 18px;
            }
            .filter-bar {
                gap: 6px;
            }
            .filter-tag {
                padding: 5px 12px;
                font-size: 12px;
            }
            .prediction-card .card-img {
                height: 120px;
            }
        }

/* roulang page: category4 */
:root {
 --primary: #1A3C2E;
 --primary-light: #2A5C44;
 --primary-dark: #0F281E;
 --accent: #D8FF3D;
 --accent-soft: #EBFF8F;
 --bg-light: #F4F2ED;
 --bg-white: #FFFFFF;
 --bg-dark: #1E1E1E;
 --bg-dark-soft: #2A2A28;
 --text-dark: #1E1E1E;
 --text-light: #F4F2ED;
 --text-muted: #6B6B66;
 --text-muted-light: #B0B0A8;
 --border: #E0DDD5;
 --border-dark: rgba(255,255,255,0.12);
 --radius-sm: 8px;
 --radius-md: 14px;
 --radius-lg: 18px;
 --radius-xl: 24px;
 --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
 --shadow: 0 4px 18px rgba(0,0,0,0.06);
 --shadow-lg: 0 12px 36px rgba(0,0,0,0.10);
 --transition: 180ms ease;
 --font-sans: 'MiSans', 'HarmonyOS Sans', 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
 --container: 1200px;
 --header-height: 72px;
 }

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

 body {
 font-family: var(--font-sans);
 font-size: 16px;
 line-height: 1.85;
 color: var(--text-dark);
 background-color: var(--bg-white);
 overflow-x: hidden;
 margin: 0;
 }

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

 a:hover {
 opacity: 0.82;
 }

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

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

 .container {
 width: 100%;
 max-width: var(--container);
 margin: 0 auto;
 padding: 0 24px;
 }

 /* Header & Navigation */
 .site-header {
 position: sticky;
 top: 0;
 z-index: 100;
 background: rgba(255, 255, 255, 0.94);
 backdrop-filter: blur(16px);
 -webkit-backdrop-filter: blur(16px);
 border-bottom: 1px solid var(--border);
 height: var(--header-height);
 display: flex;
 align-items: center;
 transition: box-shadow var(--transition);
 }

 .site-header.scrolled {
 box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
 }

 .header-inner {
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 24px;
 width: 100%;
 }

 .logo {
 display: flex;
 align-items: center;
 gap: 10px;
 flex-shrink: 0;
 }

 .logo-icon {
 width: 36px;
 height: 36px;
 border-radius: var(--radius-sm);
 background: var(--primary);
 display: flex;
 align-items: center;
 justify-content: center;
 color: var(--accent);
 font-weight: 700;
 font-size: 18px;
 line-height: 1;
 flex-shrink: 0;
 }

 .logo-text {
 font-weight: 700;
 font-size: 17px;
 color: var(--primary-dark);
 letter-spacing: 0.5px;
 white-space: nowrap;
 }

 .main-nav {
 display: flex;
 align-items: center;
 gap: 32px;
 flex: 1;
 justify-content: center;
 }

 .main-nav a {
 font-size: 15px;
 font-weight: 500;
 color: var(--text-dark);
 padding: 8px 2px;
 position: relative;
 white-space: nowrap;
 }

 .main-nav a::after {
 content: '';
 position: absolute;
 bottom: 0;
 left: 0;
 width: 0;
 height: 2px;
 background: var(--primary);
 transition: width var(--transition);
 }

 .main-nav a:hover::after,
 .main-nav a.active::after {
 width: 100%;
 }

 .main-nav a.active {
 color: var(--primary);
 }

 .header-ctas {
 display: flex;
 align-items: center;
 gap: 10px;
 flex-shrink: 0;
 }

 .btn {
 display: inline-flex;
 align-items: center;
 justify-content: center;
 gap: 8px;
 padding: 10px 20px;
 border-radius: var(--radius-sm);
 font-size: 14px;
 font-weight: 600;
 cursor: pointer;
 transition: all var(--transition);
 line-height: 1.4;
 border: 1px solid transparent;
 white-space: nowrap;
 }

 .btn-primary {
 background: var(--primary);
 color: var(--accent);
 border-color: var(--primary);
 }

 .btn-primary:hover {
 background: var(--primary-light);
 border-color: var(--primary-light);
 transform: translateY(-1px);
 box-shadow: 0 6px 16px rgba(26, 60, 46, 0.25);
 }

 .btn-outline {
 background: transparent;
 color: var(--primary);
 border-color: var(--primary);
 }

 .btn-outline:hover {
 background: rgba(26, 60, 46, 0.08);
 border-color: var(--primary-dark);
 transform: translateY(-1px);
 }

 .btn-light {
 background: var(--accent);
 color: var(--primary-dark);
 border-color: var(--accent);
 }

 .btn-light:hover {
 background: #c8ec2f;
 border-color: #c8ec2f;
 transform: translateY(-1px);
 box-shadow: 0 6px 16px rgba(200, 236, 47, 0.3);
 }

 .hamburger {
 display: none;
 flex-direction: column;
 gap: 4px;
 background: none;
 border: none;
 cursor: pointer;
 padding: 8px;
 }

 .hamburger span {
 width: 22px;
 height: 2px;
 background: var(--text-dark);
 transition: all var(--transition);
 }

 .hamburger.open span:nth-child(1) {
 transform: translateY(6px) rotate(45deg);
 }

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

 .hamburger.open span:nth-child(3) {
 transform: translateY(-6px) rotate(-45deg);
 }

 /* Category hero (narrow header) */
 .cat-hero {
 background: linear-gradient(180deg, #F4F2ED 0%, #FFFFFF 100%);
 border-bottom: 1px solid var(--border);
 padding: 32px 0 28px;
 min-height: 35vh;
 display: flex;
 align-items: center;
 }

 .breadcrumb-cat {
 font-size: 14px;
 color: var(--text-muted);
 margin-bottom: 12px;
 display: flex;
 align-items: center;
 gap: 6px;
 flex-wrap: wrap;
 }

 .breadcrumb-cat a {
 color: var(--primary);
 font-weight: 500;
 }

 .breadcrumb-cat span.sep {
 opacity: 0.5;
 }

 .cat-hero h1 {
 font-size: clamp(26px, 4vw, 36px);
 font-weight: 700;
 letter-spacing: -0.5px;
 margin: 0 0 12px;
 color: var(--primary-dark);
 line-height: 1.3;
 }

 .cat-hero .cat-summary {
 font-size: 17px;
 color: var(--text-muted);
 max-width: 760px;
 line-height: 1.8;
 margin: 0;
 }

 /* Section general */
 .section {
 padding: 60px 0;
 }

 .section-alt {
 background: var(--bg-light);
 }

 .section-title {
 font-size: clamp(20px, 3vw, 28px);
 font-weight: 700;
 color: var(--primary-dark);
 margin-bottom: 12px;
 letter-spacing: -0.3px;
 }

 .section-subtitle {
 font-size: 16px;
 color: var(--text-muted);
 margin-bottom: 32px;
 max-width: 700px;
 line-height: 1.8;
 }

 .text-accent {
 color: var(--primary);
 font-weight: 600;
 }

 .badge-soft {
 display: inline-flex;
 align-items: center;
 gap: 6px;
 background: var(--accent-soft);
 color: var(--primary-dark);
 padding: 4px 12px;
 border-radius: 20px;
 font-size: 13px;
 font-weight: 600;
 letter-spacing: 0.3px;
 }

 /* Filter bar */
 .filter-bar {
 display: flex;
 align-items: center;
 gap: 12px;
 flex-wrap: wrap;
 background: #fff;
 border: 1px solid var(--border);
 border-radius: var(--radius-md);
 padding: 12px 16px;
 margin-bottom: 28px;
 box-shadow: var(--shadow-sm);
 }

 .filter-bar .filter-label {
 font-weight: 600;
 font-size: 14px;
 color: var(--text-muted);
 margin-right: 8px;
 }

 .filter-bar .filter-tag {
 padding: 6px 16px;
 border-radius: 20px;
 font-size: 14px;
 font-weight: 500;
 background: transparent;
 border: 1px solid var(--border);
 color: var(--text-dark);
 cursor: pointer;
 transition: all var(--transition);
 }

 .filter-bar .filter-tag.active,
 .filter-bar .filter-tag:hover {
 background: var(--primary);
 color: var(--accent);
 border-color: var(--primary);
 }

 /* List cards */
 .list-card-grid {
 display: grid;
 grid-template-columns: repeat(2, 1fr);
 gap: 24px;
 }

 .list-card {
 background: #fff;
 border: 1px solid var(--border);
 border-radius: var(--radius-lg);
 overflow: hidden;
 box-shadow: var(--shadow-sm);
 transition: all var(--transition);
 }

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

 .list-card-media {
 height: 180px;
 overflow: hidden;
 background: #ece9e2;
 position: relative;
 }

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

 .list-card-body {
 padding: 20px 22px 22px;
 }

 .list-card-body h3 {
 font-size: 18px;
 font-weight: 700;
 margin: 0 0 8px;
 color: var(--primary-dark);
 line-height: 1.4;
 }

 .list-card-body p {
 font-size: 15px;
 color: var(--text-muted);
 margin-bottom: 16px;
 line-height: 1.7;
 }

 .list-card-metrics {
 display: flex;
 flex-wrap: wrap;
 gap: 10px 20px;
 margin-bottom: 16px;
 border-top: 1px solid var(--border);
 padding-top: 14px;
 }

 .metric-item {
 font-size: 14px;
 color: var(--text-dark);
 display: flex;
 align-items: center;
 gap: 4px;
 }

 .metric-item strong {
 color: var(--primary);
 font-weight: 700;
 }

 .card-link {
 display: inline-flex;
 align-items: center;
 gap: 6px;
 color: var(--primary);
 font-weight: 600;
 font-size: 14px;
 }

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

 /* Parameter table */
 .params-list {
 display: flex;
 flex-wrap: wrap;
 gap: 20px;
 list-style: none;
 padding: 0;
 margin: 0;
 }

 .params-list li {
 flex: 1 1 220px;
 background: #fff;
 border: 1px solid var(--border);
 border-radius: var(--radius-md);
 padding: 20px 22px;
 box-shadow: var(--shadow-sm);
 transition: box-shadow var(--transition);
 }

 .params-list li:hover {
 box-shadow: var(--shadow);
 }

 .params-list .param-label {
 font-size: 15px;
 font-weight: 600;
 color: var(--text-dark);
 display: block;
 margin-bottom: 6px;
 }

 .params-list .param-desc {
 font-size: 14px;
 color: var(--text-muted);
 line-height: 1.6;
 margin: 0;
 }

 /* Scenario grid */
 .scenario-grid {
 display: grid;
 grid-template-columns: repeat(4, 1fr);
 gap: 16px;
 }

 .scenario-item {
 background: #fff;
 border: 1px solid var(--border);
 border-radius: var(--radius-md);
 padding: 18px 20px;
 text-align: left;
 transition: all var(--transition);
 }

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

 .scenario-item .scenario-icon {
 font-size: 24px;
 margin-bottom: 12px;
 color: var(--primary);
 }

 .scenario-item h4 {
 font-size: 16px;
 font-weight: 700;
 color: var(--primary-dark);
 margin: 0 0 6px;
 }

 .scenario-item p {
 font-size: 14px;
 color: var(--text-muted);
 margin: 0;
 line-height: 1.6;
 }

 /* Common口径 explanation */
 .misread-grid {
 display: grid;
 grid-template-columns: repeat(2, 1fr);
 gap: 20px;
 }

 .misread-card {
 background: #fff;
 border: 1px solid var(--border);
 border-radius: var(--radius-lg);
 padding: 20px 22px;
 box-shadow: var(--shadow-sm);
 transition: all var(--transition);
 }

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

 .misread-card .misread-title {
 font-size: 16px;
 font-weight: 700;
 color: var(--primary-dark);
 margin-bottom: 8px;
 }

 .misread-card .misread-body {
 font-size: 14px;
 color: var(--text-muted);
 line-height: 1.7;
 }

 .misread-card .misread-body strong {
 color: var(--primary);
 }

 /* Conclusion cards */
 .conclusion-grid {
 display: grid;
 grid-template-columns: repeat(2, 1fr);
 gap: 20px;
 }

 .conclusion-card {
 background: var(--primary);
 color: var(--text-light);
 border-radius: var(--radius-lg);
 padding: 24px 28px;
 }

 .conclusion-card.light {
 background: #fff;
 color: var(--text-dark);
 border: 1px solid var(--border);
 box-shadow: var(--shadow-sm);
 }

 .conclusion-card h4 {
 font-size: 18px;
 font-weight: 700;
 margin: 0 0 10px;
 }

 .conclusion-card p {
 font-size: 15px;
 line-height: 1.7;
 margin: 0;
 opacity: 0.9;
 }

 /* Article cards */
 .article-strip {
 display: grid;
 grid-template-columns: repeat(3, 1fr);
 gap: 24px;
 }

 .article-card {
 background: #fff;
 border: 1px solid var(--border);
 border-radius: var(--radius-md);
 padding: 18px 20px;
 box-shadow: var(--shadow-sm);
 transition: all var(--transition);
 }

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

 .article-card h5 {
 font-size: 16px;
 font-weight: 700;
 color: var(--primary-dark);
 margin: 0 0 8px;
 }

 .article-card p {
 font-size: 14px;
 color: var(--text-muted);
 margin: 0 0 12px;
 line-height: 1.6;
 }

 .article-card .article-link {
 font-size: 14px;
 font-weight: 600;
 color: var(--primary);
 display: inline-flex;
 align-items: center;
 gap: 4px;
 }

 /* CTA bottom */
 .cta-bottom {
 background: var(--primary);
 padding: 32px 0;
 color: var(--text-light);
 }

 .cta-bottom .container {
 display: flex;
 align-items: center;
 justify-content: space-between;
 gap: 24px;
 flex-wrap: wrap;
 }

 .cta-bottom p {
 font-size: 17px;
 margin: 0;
 max-width: 600px;
 line-height: 1.7;
 opacity: 0.92;
 }

 /* Footer */
 .site-footer {
 background: var(--bg-dark);
 color: var(--text-light);
 padding: 56px 0 24px;
 }

 .footer-grid {
 display: grid;
 grid-template-columns: 2fr 1fr 1fr 1fr;
 gap: 32px;
 margin-bottom: 40px;
 }

 .footer-brand .logo {
 margin-bottom: 16px;
 }

 .footer-brand .logo-text {
 color: var(--text-light);
 }

 .footer-brand p {
 color: var(--text-muted-light);
 font-size: 14px;
 line-height: 1.7;
 margin: 0;
 }

 .footer-col h3 {
 font-size: 16px;
 font-weight: 700;
 color: #fff;
 margin: 0 0 16px;
 }

 .footer-col ul {
 list-style: none;
 padding: 0;
 margin: 0;
 }

 .footer-col li {
 margin-bottom: 10px;
 }

 .footer-col a {
 color: var(--text-muted-light);
 font-size: 14px;
 text-decoration: none;
 transition: color var(--transition);
 }

 .footer-col a:hover {
 color: var(--accent);
 opacity: 1;
 }

 .footer-bottom {
 border-top: 1px solid var(--border-dark);
 padding-top: 24px;
 display: flex;
 flex-direction: column;
 gap: 12px;
 }

 .footer-bottom-links {
 display: flex;
 flex-wrap: wrap;
 gap: 18px;
 }

 .footer-bottom-links a {
 color: var(--text-muted-light);
 font-size: 14px;
 text-decoration: none;
 }

 .footer-bottom-links a:hover {
 color: var(--accent);
 opacity: 1;
 }

 .footer-bottom span {
 color: var(--text-muted-light);
 font-size: 13px;
 }

 /* Responsive */
 @media (max-width: 1024px) {
 .list-card-grid { grid-template-columns: 1fr 1fr; }
 .scenario-grid { grid-template-columns: 1fr 1fr; }
 .article-strip { grid-template-columns: 1fr 1fr; }
 .misread-grid { grid-template-columns: 1fr 1fr; }
 .conclusion-grid { grid-template-columns: 1fr 1fr; }
 }

 @media (max-width: 768px) {
 :root { --header-height: 60px; }
 .header-inner { gap: 12px; }
 .main-nav {
 position: fixed;
 top: var(--header-height);
 left: 0;
 right: 0;
 background: #fff;
 flex-direction: column;
 gap: 8px;
 padding: 16px 24px;
 border-bottom: 1px solid var(--border);
 display: none;
 box-shadow: 0 8px 20px rgba(0,0,0,0.08);
 }
 .main-nav.open { display: flex; }
 .main-nav a { padding: 8px 0; width: 100%; }
 .main-nav a::after { display: none; }
 .header-ctas .btn-outline { display: none; }
 .header-ctas .btn-primary { padding: 8px 14px; font-size: 13px; }
 .hamburger { display: flex; }
 .cat-hero { min-height: 30vh; padding: 24px 0; }
 .cat-hero h1 { font-size: 24px; }
 .list-card-grid { grid-template-columns: 1fr; }
 .scenario-grid { grid-template-columns: 1fr; }
 .article-strip { grid-template-columns: 1fr; }
 .misread-grid { grid-template-columns: 1fr; }
 .conclusion-grid { grid-template-columns: 1fr; }
 .cta-bottom .container { flex-direction: column; align-items: flex-start; }
 .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
 }

 @media (max-width: 520px) {
 .container { padding: 0 16px; }
 .header-ctas .btn-primary { padding: 6px 10px; font-size: 12px; }
 .footer-grid { grid-template-columns: 1fr; }
 .list-card-body { padding: 16px 18px 18px; }
 .list-card-media { height: 150px; }
 .filter-bar { flex-direction: column; align-items: flex-start; }
 }

/* 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}