/* roulang page: index */
:root {
            --primary: #0B5EAB;
            --primary-hover: #094A88;
            --accent: #0B9B5A;
            --accent-light: #E6F5EE;
            --bg: #F4F7FA;
            --card-bg: #FFFFFF;
            --divider: #E8EEF4;
            --border: #DAE4ED;
            --text: #1F2A33;
            --text-heading: #142130;
            --text-muted: #5F6E7D;
            --footer-bg: #142130;
            --footer-text: #DFE7EE;
            --footer-link: #FFFFFF;
            --radius-lg: 12px;
            --radius-sm: 8px;
            --radius-btn: 6px;
            --shadow-default: 0 2px 8px rgba(11, 94, 171, 0.06);
            --shadow-hover: 0 12px 28px rgba(11, 94, 171, 0.12);
            --shadow-strong: 0 18px 44px rgba(11, 94, 171, 0.10);
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.2s ease;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            color: var(--text);
            background: var(--bg);
            line-height: 1.9;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-lg);
        }

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

        a:hover,
        a:focus {
            color: var(--accent);
            text-decoration: none;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .section {
            padding: 5rem 0;
        }

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

        .section-tight {
            padding: 3rem 0;
        }

        h1,
        h2,
        h3,
        h4 {
            color: var(--text-heading);
            font-weight: 700;
            margin-bottom: 1rem;
            line-height: 1.3;
        }

        h1 {
            font-size: clamp(2.2rem, 4vw, 3.2rem);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.01em;
        }

        h2 {
            font-size: clamp(1.6rem, 2.8vw, 2.2rem);
            font-weight: 650;
        }

        h3 {
            font-size: clamp(1.1rem, 1.6vw, 1.45rem);
            font-weight: 600;
            color: var(--text);
        }

        p {
            margin-bottom: 1.2rem;
            color: var(--text);
        }

        .text-muted {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
        }

        .text-small {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .badge {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--accent-light);
            color: var(--accent);
            letter-spacing: 0.02em;
        }

        .badge-blue {
            background: #E8F0F9;
            color: var(--primary);
        }

        .btn {
            display: inline-block;
            padding: 0.85rem 1.8rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            line-height: 1.5;
            letter-spacing: 0.01em;
            text-decoration: none;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(11, 94, 171, 0.22);
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-secondary:hover,
        .btn-secondary:focus {
            background: #EFF5FB;
            color: var(--primary-hover);
            border-color: var(--primary-hover);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
        }

        .btn-accent:hover,
        .btn-accent:focus {
            background: #087D48;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(11, 155, 90, 0.22);
        }

        .btn-sm {
            padding: 0.55rem 1.2rem;
            font-size: 0.85rem;
        }

        /* Header & Navigation */
        .site-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(11, 94, 171, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0 1.5rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-heading);
            text-decoration: none;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.6rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav a {
            color: var(--text);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 0.5rem 0.1rem;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }

        .main-nav a:hover,
        .main-nav a:focus {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .main-nav a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
            padding: 0.5rem;
        }

        /* Progress Steps Navigation */
        .progress-nav {
            background: var(--card-bg);
            border-bottom: 1px solid var(--divider);
            padding: 0;
        }

        .progress-nav-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            align-items: center;
            gap: 2.5rem;
            overflow-x: auto;
            scrollbar-width: thin;
            -webkit-overflow-scrolling: touch;
        }

        .progress-step {
            display: flex;
            align-items: center;
            gap: 0.55rem;
            padding: 0.85rem 0;
            font-size: 0.85rem;
            color: var(--text-muted);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .progress-step:hover,
        .progress-step:focus {
            color: var(--primary);
        }

        .progress-step .step-dot {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            border: 2px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .progress-step.active .step-dot {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        .progress-step.completed .step-dot {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }

        .progress-step .step-arrow {
            color: var(--border);
            font-size: 0.7rem;
            margin-left: 0.4rem;
        }

        /* Hero - Before/After Comparison */
        .hero {
            background: var(--card-bg);
            padding: 4rem 0 3rem;
            border-bottom: 1px solid var(--divider);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .hero-left h1 {
            margin-bottom: 1.2rem;
            font-size: clamp(2.1rem, 3.8vw, 3.1rem);
        }

        .hero-left .hero-subtitle {
            font-size: 1.05rem;
            color: var(--text);
            line-height: 1.9;
            margin-bottom: 1.8rem;
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 1.6rem;
        }

        .hero-trust-badges {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .hero-trust-badges span {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .hero-trust-badges i {
            color: var(--accent);
            font-size: 0.9rem;
        }

        .hero-right {
            display: flex;
            justify-content: center;
            align-items: stretch;
        }

        .before-after-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-default);
            padding: 1.8rem;
            width: 100%;
            max-width: 480px;
        }

        .ba-header {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 1.2rem;
            font-weight: 650;
            font-size: 1rem;
            color: var(--text-heading);
        }

        .ba-header i {
            color: var(--primary);
        }

        .ba-block {
            padding: 1rem 1.2rem;
            border-radius: var(--radius-sm);
            margin-bottom: 0.8rem;
            font-size: 0.88rem;
            border: 1px solid var(--border);
        }

        .ba-block.before {
            background: #F8FAFB;
            border-left: 3px solid #C0CCD6;
        }

        .ba-block.after {
            background: #F0F8F3;
            border-left: 3px solid var(--accent);
        }

        .ba-block .ba-label {
            font-weight: 650;
            font-size: 0.78rem;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 0.4rem;
            display: block;
        }

        .ba-block.before .ba-label {
            color: #8A95A2;
        }
        .ba-block.after .ba-label {
            color: var(--accent);
        }

        .ba-arrow {
            text-align: center;
            color: var(--primary);
            font-size: 1.4rem;
            margin: 0.2rem 0;
        }

        /* Step Anchor Section */
        .steps-anchor {
            background: var(--bg);
            padding: 2.5rem 0;
            border-bottom: 1px solid var(--divider);
        }

        .steps-anchor-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .step-anchor-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            text-align: center;
            transition: var(--transition);
            box-shadow: var(--shadow-default);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.6rem;
        }

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

        .step-anchor-card .step-number {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
        }

        .step-anchor-card h3 {
            font-size: 1rem;
            margin-bottom: 0.2rem;
            color: var(--text-heading);
        }

        .step-anchor-card p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* Cards General */
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-default);
            padding: 1.8rem;
            transition: var(--transition);
        }

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

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 1rem;
            background: #E8F0F9;
            color: var(--primary);
        }

        .card-icon.accent {
            background: var(--accent-light);
            color: var(--accent);
        }

        /* Three Cards */
        .three-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }

        .three-cards .card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-bottom: 1.2rem;
        }

        /* Section Headers */
        .section-header {
            text-align: left;
            margin-bottom: 2.5rem;
        }

        .section-header h2 {
            margin-bottom: 0.6rem;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 0.95rem;
            max-width: 680px;
            line-height: 1.8;
        }

        .section-header.center {
            text-align: center;
        }
        .section-header.center p {
            margin-left: auto;
            margin-right: auto;
        }

        /* Brand Intro */
        .brand-intro {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2.8rem;
            box-shadow: var(--shadow-default);
        }

        .brand-intro p {
            font-size: 1rem;
            line-height: 2;
            color: var(--text);
        }

        /* Scenario Blocks */
        .scenario-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: center;
            margin-bottom: 2.5rem;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-default);
        }

        .scenario-block:last-child {
            margin-bottom: 0;
        }

        .scenario-block.reverse {
            direction: rtl;
        }

        .scenario-block.reverse > * {
            direction: ltr;
        }

        .scenario-block img {
            width: 100%;
            height: 240px;
            object-fit: cover;
            border-radius: var(--radius-sm);
        }

        .scenario-block h3 {
            margin-bottom: 0.8rem;
        }
        .scenario-block p {
            font-size: 0.92rem;
            color: var(--text);
            line-height: 1.85;
        }
        .scenario-block a {
            font-weight: 600;
            font-size: 0.9rem;
        }

        /* Data Snapshot */
        .data-snapshot-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .data-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            text-align: center;
            box-shadow: var(--shadow-default);
            transition: var(--transition);
        }

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

        .data-card .data-number {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 0.4rem;
        }

        .data-card .data-number.accent-num {
            color: var(--accent);
        }

        .data-card .data-label {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-heading);
            margin-bottom: 0.4rem;
        }

        .data-card .data-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Social Proof */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.2rem;
        }

        .review-bubble {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.2rem 1.4rem;
            box-shadow: var(--shadow-default);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

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

        .review-bubble .review-text {
            font-size: 0.88rem;
            line-height: 1.7;
            color: var(--text);
            flex: 1;
        }

        .review-bubble .review-author {
            font-weight: 650;
            font-size: 0.82rem;
            color: var(--text-heading);
        }

        .review-bubble .review-tag {
            font-size: 0.72rem;
            color: var(--primary);
            background: #E8F0F9;
            border-radius: 12px;
            padding: 0.15rem 0.6rem;
            display: inline-block;
            width: fit-content;
        }

        /* News List */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            display: grid;
            grid-template-columns: 90px 1fr auto;
            gap: 1.5rem;
            padding: 1.5rem 0;
            border-bottom: 1px solid var(--divider);
            transition: var(--transition);
            align-items: start;
        }

        .news-item:hover {
            background: #F8FBFD;
            border-radius: var(--radius-sm);
            padding-left: 0.6rem;
            padding-right: 0.6rem;
        }

        .news-date {
            text-align: center;
            background: var(--bg);
            border-radius: var(--radius-sm);
            padding: 0.6rem 0.5rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            min-width: 80px;
        }

        .news-date .day {
            font-size: 1.5rem;
            display: block;
        }
        .news-date .month {
            font-size: 0.72rem;
            color: var(--text-muted);
            display: block;
        }

        .news-content h3 {
            font-size: 1.02rem;
            margin-bottom: 0.4rem;
            color: var(--text-heading);
            line-height: 1.45;
        }

        .news-content p {
            font-size: 0.86rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0.5rem;
        }

        .news-content .news-tags {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
            margin-bottom: 0.4rem;
        }

        .news-content .news-tags span {
            font-size: 0.72rem;
            background: var(--bg);
            color: var(--text-muted);
            padding: 0.15rem 0.6rem;
            border-radius: 12px;
        }

        .btn-readmore {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            white-space: nowrap;
            align-self: center;
            text-decoration: none;
            transition: var(--transition);
        }

        .btn-readmore:hover {
            color: var(--accent);
            gap: 0.5rem;
        }

        /* Comparison */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }

        .comparison-col {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-default);
        }

        .comparison-col.advantage {
            border-left: 4px solid var(--accent);
            background: #F8FDFA;
        }

        .comparison-col.disadvantage {
            border-left: 4px solid #C0CCD6;
            background: #F8FAFB;
        }

        .comparison-col h3 {
            font-size: 1.05rem;
            margin-bottom: 1.2rem;
        }

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

        .comparison-col ul li {
            padding: 0.6rem 0;
            font-size: 0.88rem;
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
            border-bottom: 1px solid var(--divider);
            line-height: 1.6;
            color: var(--text);
        }

        .comparison-col ul li:last-child {
            border-bottom: none;
        }

        .comparison-col.advantage ul li i {
            color: var(--accent);
            margin-top: 0.2rem;
        }
        .comparison-col.disadvantage ul li i {
            color: #A0AAB5;
            margin-top: 0.2rem;
        }

        /* Deep Content */
        .deep-content {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 2.8rem 3rem;
            box-shadow: var(--shadow-default);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: start;
        }

        .deep-content .deep-text {
            font-size: 0.95rem;
            line-height: 2;
            color: var(--text);
        }

        .deep-content .deep-text p {
            margin-bottom: 1.2rem;
        }

        .deep-content img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            position: sticky;
            top: 100px;
        }

        /* Evidence Quotes */
        .evidence-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.3rem;
        }

        .evidence-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: var(--shadow-default);
        }

        .evidence-card .evidence-quote {
            font-size: 1.1rem;
            font-weight: 650;
            color: var(--primary);
            margin-bottom: 0.6rem;
            line-height: 1.5;
        }

        .evidence-card .evidence-source {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 0.4rem;
        }

        .evidence-card .evidence-note {
            font-size: 0.85rem;
            color: var(--text);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-container {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 0.8rem;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item summary {
            padding: 1.1rem 1.5rem;
            font-weight: 650;
            font-size: 0.95rem;
            color: var(--text-heading);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--bg);
            transition: var(--transition);
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '+';
            font-size: 1.4rem;
            font-weight: 400;
            color: var(--primary);
            transition: transform 0.25s ease;
        }

        .faq-item[open] summary::after {
            content: '−';
        }
        .faq-item[open] summary {
            background: var(--card-bg);
            color: var(--primary);
        }

        .faq-item .faq-answer {
            padding: 1rem 1.5rem 1.3rem;
            font-size: 0.9rem;
            line-height: 1.85;
            color: var(--text);
            background: var(--card-bg);
            border-top: 1px solid var(--divider);
        }

        /* Guarantee */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .guarantee-card {
            text-align: center;
            padding: 2rem 1.5rem;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-default);
            transition: var(--transition);
        }

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

        .guarantee-card .g-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--accent-light);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin: 0 auto 1rem;
        }

        .guarantee-card h3 {
            font-size: 1rem;
            margin-bottom: 0.5rem;
        }
        .guarantee-card p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* Bottom Fixed CTA */
        .bottom-cta-fixed {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: var(--footer-bg);
            color: #fff;
            padding: 0.8rem 1.5rem;
            z-index: 200;
            transform: translateY(100%);
            transition: transform 0.35s ease;
            box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.12);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }

        .bottom-cta-fixed.visible {
            transform: translateY(0);
        }

        .bottom-cta-fixed .cta-text {
            font-size: 0.95rem;
            font-weight: 500;
            color: #fff;
            flex: 1;
        }
        .bottom-cta-fixed .cta-buttons {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 3.5rem 0 2rem;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 0.6rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-brand h3 .logo-icon {
            width: 28px;
            height: 28px;
            font-size: 0.8rem;
        }

        .footer-brand p {
            color: var(--footer-text);
            font-size: 0.85rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 650;
            margin-bottom: 1rem;
        }

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

        .footer-col ul li {
            margin-bottom: 0.5rem;
        }

        .footer-col ul li a {
            color: var(--footer-text);
            font-size: 0.85rem;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-col ul li a:hover,
        .footer-col ul li a:focus {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            font-size: 0.78rem;
            color: var(--footer-text);
        }

        .footer-bottom a {
            color: #fff;
            font-size: 0.78rem;
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* Utility spacing */
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mt-3 {
            margin-top: 3rem;
        }
        .gap-1 {
            gap: 1rem;
        }
        .text-center {
            text-align: center;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .hero {
                padding: 3rem 0 2rem;
            }
            .three-cards {
                grid-template-columns: repeat(2, 1fr);
            }
            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .evidence-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .deep-content {
                grid-template-columns: 1fr;
                padding: 2rem;
            }
            .deep-content img {
                position: static;
                height: 220px;
            }
            .steps-anchor-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            html {
                font-size: 15px;
            }
            .container {
                padding: 0 1rem;
            }
            .header-inner {
                padding: 0 1rem;
                min-height: 60px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                padding: 1.2rem 1.5rem;
                gap: 0.8rem;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
            }
            .main-nav.open {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .hero {
                padding: 2.2rem 0 1.8rem;
            }
            .hero-inner {
                gap: 1.5rem;
            }
            .hero-cta-group .btn {
                width: 100%;
                text-align: center;
            }
            .hero-trust-badges {
                gap: 0.8rem;
                font-size: 0.72rem;
            }
            .section {
                padding: 3.5rem 0;
            }
            .section-tight {
                padding: 2rem 0;
            }
            .three-cards {
                grid-template-columns: 1fr;
            }
            .data-snapshot-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .data-card .data-number {
                font-size: 2rem;
            }
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            .news-item {
                grid-template-columns: 1fr;
                gap: 0.8rem;
                padding: 1.2rem 0;
            }
            .news-date {
                display: inline-flex;
                gap: 0.5rem;
                align-items: baseline;
                padding: 0.3rem 0.8rem;
                width: auto;
            }
            .news-date .day {
                font-size: 1.1rem;
                display: inline;
            }
            .news-date .month {
                display: inline;
                font-size: 0.75rem;
            }
            .btn-readmore {
                align-self: flex-start;
            }
            .scenario-block {
                grid-template-columns: 1fr;
                padding: 1.5rem;
                gap: 1.2rem;
            }
            .scenario-block.reverse {
                direction: ltr;
            }
            .scenario-block img {
                height: 200px;
            }
            .evidence-grid {
                grid-template-columns: 1fr;
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .steps-anchor-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.8rem;
            }
            .progress-nav-inner {
                gap: 1.5rem;
                padding: 0 1rem;
            }
            .progress-step {
                font-size: 0.75rem;
                gap: 0.4rem;
            }
            .progress-step .step-dot {
                width: 22px;
                height: 22px;
                font-size: 0.65rem;
            }
            .deep-content {
                padding: 1.5rem;
            }
            .brand-intro {
                padding: 1.8rem;
            }
            .bottom-cta-fixed {
                flex-direction: column;
                align-items: stretch;
                text-align: center;
                padding: 0.7rem 1rem;
                gap: 0.5rem;
            }
            .bottom-cta-fixed .cta-buttons {
                justify-content: center;
            }
            .bottom-cta-fixed .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 0.5rem;
            }
        }

        @media (max-width: 520px) {
            html {
                font-size: 14px;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .data-snapshot-grid {
                grid-template-columns: 1fr;
            }
            .steps-anchor-grid {
                grid-template-columns: 1fr;
            }
            .before-after-card {
                padding: 1.2rem;
            }
            .ba-block {
                padding: 0.8rem 1rem;
                font-size: 0.8rem;
            }
        }

/* roulang page: category1 */
:root {
        --primary: #0B5EAB;
        --primary-hover: #094A88;
        --accent: #0B9B5A;
        --accent-light: #E6F5EE;
        --bg: #F4F7FA;
        --card-bg: #FFFFFF;
        --divider: #E8EEF4;
        --border: #DAE4ED;
        --text: #1F2A33;
        --text-heading: #142130;
        --text-muted: #5F6E7D;
        --footer-bg: #142130;
        --footer-text: #DFE7EE;
        --footer-link: #FFFFFF;
        --radius-lg: 12px;
        --radius-sm: 8px;
        --radius-btn: 6px;
        --shadow-default: 0 2px 8px rgba(11, 94, 171, 0.06);
        --shadow-hover: 0 12px 28px rgba(11, 94, 171, 0.12);
        --shadow-strong: 0 18px 44px rgba(11, 94, 171, 0.10);
        --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        --transition: all 0.2s ease;
    }

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

    html {
        scroll-behavior: smooth;
        font-size: 16px;
    }

    body {
        font-family: var(--font-stack);
        color: var(--text);
        background: var(--bg);
        line-height: 1.9;
        margin: 0;
        padding: 0;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    img {
        max-width: 100%;
        height: auto;
        display: block;
        border-radius: var(--radius-lg);
    }

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

    a:hover,
    a:focus {
        color: var(--accent);
        text-decoration: none;
    }

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

    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 1.5rem;
    }

    .section {
        padding: 5rem 0;
    }

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

    .section-tight {
        padding: 3rem 0;
    }

    .text-muted {
        color: var(--text-muted);
        font-size: 0.88rem;
        line-height: 1.6;
    }

    .text-small {
        font-size: 0.82rem;
        color: var(--text-muted);
    }

    .badge {
        display: inline-block;
        padding: 0.3rem 0.8rem;
        border-radius: 20px;
        font-size: 0.78rem;
        font-weight: 500;
        background: var(--accent-light);
        color: var(--accent);
        letter-spacing: 0.02em;
    }

    .badge-blue {
        background: #E8F0F9;
        color: var(--primary);
    }

    .badge-outline {
        background: transparent;
        color: var(--text-muted);
        border: 1px solid var(--border);
    }

    .btn {
        display: inline-block;
        padding: 0.85rem 1.8rem;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 0.95rem;
        text-align: center;
        cursor: pointer;
        transition: var(--transition);
        border: none;
        line-height: 1.5;
        letter-spacing: 0.01em;
        text-decoration: none;
    }

    .btn-primary {
        background: var(--primary);
        color: #fff;
    }

    .btn-primary:hover,
    .btn-primary:focus {
        background: var(--primary-hover);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 16px rgba(11, 94, 171, 0.22);
    }

    .btn-secondary {
        background: transparent;
        color: var(--primary);
        border: 1px solid var(--primary);
    }

    .btn-secondary:hover,
    .btn-secondary:focus {
        background: #EFF5FB;
        color: var(--primary-hover);
        border-color: var(--primary-hover);
    }

    .btn-accent {
        background: var(--accent);
        color: #fff;
    }

    .btn-accent:hover,
    .btn-accent:focus {
        background: #087D48;
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 16px rgba(11, 155, 90, 0.22);
    }

    .btn-sm {
        padding: 0.55rem 1.2rem;
        font-size: 0.85rem;
    }

    .btn-block {
        display: block;
        width: 100%;
    }

    /* Header */
    .site-header {
        background: var(--card-bg);
        border-bottom: 1px solid var(--border);
        position: sticky;
        top: 0;
        z-index: 100;
        box-shadow: 0 1px 4px rgba(11, 94, 171, 0.04);
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 68px;
        padding: 0 1.5rem;
        max-width: 1200px;
        margin: 0 auto;
    }

    .logo {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        font-size: 1.35rem;
        font-weight: 700;
        color: var(--text-heading);
        text-decoration: none;
        letter-spacing: 0.02em;
        white-space: nowrap;
    }

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

    .logo-icon {
        width: 32px;
        height: 32px;
        background: var(--primary);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 1rem;
        flex-shrink: 0;
    }

    .main-nav {
        display: flex;
        align-items: center;
        gap: 1.6rem;
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .main-nav a {
        color: var(--text);
        font-weight: 500;
        font-size: 0.92rem;
        padding: 0.5rem 0.1rem;
        border-bottom: 2px solid transparent;
        transition: var(--transition);
        white-space: nowrap;
    }

    .main-nav a:hover,
    .main-nav a:focus {
        color: var(--primary);
        border-bottom-color: var(--primary);
    }

    .main-nav a.active {
        color: var(--primary);
        border-bottom-color: var(--primary);
        font-weight: 600;
    }

    .nav-toggle {
        display: none;
        background: transparent;
        border: none;
        font-size: 1.4rem;
        color: var(--text-heading);
        cursor: pointer;
        padding: 0.5rem;
    }

    .progress-nav {
        background: #fff;
        border-bottom: 1px solid var(--border);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .progress-nav-inner {
        display: flex;
        align-items: center;
        gap: 0.25rem;
        padding: 0.6rem 1.5rem;
        max-width: 1200px;
        margin: 0 auto;
        min-width: max-content;
    }

    .progress-step {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.82rem;
        color: var(--text-muted);
        padding: 0.35rem 0.6rem;
        text-decoration: none;
        transition: var(--transition);
        white-space: nowrap;
    }

    .progress-step:hover,
    .progress-step:focus {
        color: var(--primary);
    }

    .progress-step.active {
        color: var(--primary);
        font-weight: 600;
    }

    .step-dot {
        width: 26px;
        height: 26px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.75rem;
        font-weight: 700;
        border: 2px solid var(--border);
        color: var(--text-muted);
        flex-shrink: 0;
    }

    .progress-step.active .step-dot {
        background: var(--primary);
        border-color: var(--primary);
        color: #fff;
    }

    .step-arrow {
        font-size: 0.65rem;
        color: var(--border);
    }

    /* Breadcrumb */
    .breadcrumb-bar {
        background: var(--bg);
        padding: 1.2rem 0;
        border-bottom: 1px solid var(--border);
    }

    .breadcrumb {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        font-size: 0.88rem;
        color: var(--text-muted);
        margin: 0;
        list-style: none;
        padding: 0;
        flex-wrap: wrap;
    }

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

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

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

    .breadcrumb-sep {
        color: var(--border);
        font-size: 0.7rem;
    }

    /* Category H1 header */
    .cat-hero {
        background: var(--card-bg);
        padding: 3.5rem 0 3rem;
        border-bottom: 1px solid var(--border);
    }

    .cat-hero h1 {
        font-size: 2.4rem;
        font-weight: 700;
        line-height: 1.25;
        color: var(--text-heading);
        margin: 0 0 1.2rem;
        position: relative;
        padding-bottom: 1rem;
    }

    .cat-hero h1::after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        width: 56px;
        height: 3px;
        background: var(--primary);
        border-radius: 3px;
    }

    .cat-hero .desc {
        font-size: 1rem;
        line-height: 2;
        color: var(--text);
        max-width: 860px;
        margin: 0;
    }

    /* Section heading */
    .section-heading {
        margin-bottom: 2.5rem;
    }

    .section-heading h2 {
        font-size: 1.7rem;
        font-weight: 650;
        line-height: 1.3;
        color: var(--text-heading);
        margin: 0 0 0.6rem;
    }

    .section-heading p {
        color: var(--text-muted);
        font-size: 0.95rem;
        margin: 0;
    }

    /* News list */
    .news-list {
        display: flex;
        flex-direction: column;
        gap: 0;
    }

    .news-item {
        display: flex;
        gap: 1.5rem;
        padding: 1.5rem 0;
        border-bottom: 1px solid var(--border);
        transition: var(--transition);
    }

    .news-item:first-child {
        padding-top: 0;
    }

    .news-item:hover {
        background: #F8FBFD;
        padding-left: 0.8rem;
        padding-right: 0.8rem;
        border-radius: var(--radius-sm);
    }

    .news-date-block {
        flex-shrink: 0;
        width: 70px;
        height: 70px;
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        text-align: center;
    }

    .news-date-block .day {
        font-size: 1.6rem;
        font-weight: 700;
        color: var(--primary);
        line-height: 1.2;
    }

    .news-date-block .ym {
        font-size: 0.7rem;
        color: var(--text-muted);
    }

    .news-content {
        flex: 1;
        min-width: 0;
    }

    .news-content h3 {
        font-size: 1.1rem;
        font-weight: 600;
        line-height: 1.5;
        margin: 0 0 0.4rem;
    }

    .news-content h3 a {
        color: var(--text-heading);
        text-decoration: none;
        transition: var(--transition);
    }

    .news-content h3 a:hover {
        color: var(--primary);
    }

    .news-meta {
        display: flex;
        align-items: center;
        gap: 0.8rem;
        flex-wrap: wrap;
        margin-bottom: 0.5rem;
    }

    .news-content .summary {
        color: var(--text-muted);
        font-size: 0.88rem;
        line-height: 1.7;
        margin-bottom: 0.6rem;
    }

    .read-more {
        font-size: 0.85rem;
        font-weight: 600;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 0.3rem;
        text-decoration: none;
        transition: var(--transition);
    }

    .read-more i {
        font-size: 0.7rem;
    }

    .read-more:hover {
        color: var(--accent);
        gap: 0.5rem;
    }

    .load-more-wrap {
        text-align: center;
        padding-top: 2rem;
    }

    /* Editor picks */
    .editor-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
    }

    .editor-card {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow-default);
        transition: var(--transition);
        display: flex;
        flex-direction: column;
    }

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

    .editor-card .card-img {
        aspect-ratio: 16/10;
        overflow: hidden;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    }

    .editor-card .card-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        border-radius: 0;
        transition: var(--transition);
    }

    .editor-card:hover .card-img img {
        transform: scale(1.03);
    }

    .editor-card .card-body {
        padding: 1.2rem;
        flex: 1;
        display: flex;
        flex-direction: column;
    }

    .editor-card h3 {
        font-size: 0.98rem;
        font-weight: 600;
        line-height: 1.5;
        margin: 0 0 0.4rem;
    }

    .editor-card h3 a {
        color: var(--text-heading);
    }

    .editor-card h3 a:hover {
        color: var(--primary);
    }

    .editor-card .card-desc {
        font-size: 0.82rem;
        color: var(--text-muted);
        line-height: 1.7;
        margin-bottom: 0.8rem;
        flex: 1;
    }

    /* Tag cloud */
    .tag-cloud {
        display: flex;
        flex-wrap: wrap;
        gap: 0.6rem;
    }

    .tag-cloud a {
        display: inline-block;
        padding: 0.45rem 1.1rem;
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: 20px;
        font-size: 0.82rem;
        color: var(--text);
        text-decoration: none;
        transition: var(--transition);
    }

    .tag-cloud a:hover,
    .tag-cloud a:focus {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
        box-shadow: var(--shadow-default);
    }

    /* Stats */
    .stats-card {
        background: var(--card-bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 1.8rem 1.5rem;
        text-align: center;
        box-shadow: var(--shadow-default);
        transition: var(--transition);
    }

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

    .stats-number {
        font-size: 2.4rem;
        font-weight: 700;
        color: var(--primary);
        line-height: 1.2;
        margin-bottom: 0.4rem;
    }

    .stats-label {
        font-size: 0.88rem;
        color: var(--text-muted);
        font-weight: 500;
    }

    /* Subscribe CTA */
    .subscribe-card {
        background: var(--primary);
        border-radius: var(--radius-lg);
        padding: 2.8rem 2.5rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 2rem;
        box-shadow: var(--shadow-strong);
    }

    .subscribe-card .sub-info h2 {
        color: #fff;
        font-size: 1.6rem;
        font-weight: 650;
        margin: 0 0 0.6rem;
    }

    .subscribe-card .sub-info p {
        color: rgba(255, 255, 255, 0.85);
        margin: 0;
        font-size: 0.92rem;
    }

    .subscribe-form {
        display: flex;
        gap: 0.8rem;
        flex-shrink: 0;
        min-width: 380px;
    }

    .subscribe-form input[type="email"] {
        flex: 1;
        padding: 0.85rem 1.2rem;
        border-radius: var(--radius-btn);
        border: 1px solid rgba(255, 255, 255, 0.4);
        background: rgba(255, 255, 255, 0.15);
        color: #fff;
        font-size: 0.9rem;
        font-family: var(--font-stack);
        transition: var(--transition);
        min-width: 0;
    }

    .subscribe-form input[type="email"]::placeholder {
        color: rgba(255, 255, 255, 0.65);
    }

    .subscribe-form input[type="email"]:focus {
        outline: none;
        border-color: var(--accent);
        background: rgba(255, 255, 255, 0.25);
        box-shadow: 0 0 0 3px rgba(11, 155, 90, 0.25);
    }

    .subscribe-form .btn-accent {
        flex-shrink: 0;
        white-space: nowrap;
    }

    /* FAQ */
    .faq-list {
        display: flex;
        flex-direction: column;
        gap: 0.8rem;
        max-width: 860px;
        margin: 0 auto;
    }

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

    .faq-item.open {
        border-color: var(--primary);
        box-shadow: var(--shadow-default);
    }

    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 1.1rem 1.3rem;
        cursor: pointer;
        font-weight: 600;
        font-size: 0.95rem;
        color: var(--text-heading);
        background: var(--bg);
        border: none;
        width: 100%;
        text-align: left;
        font-family: var(--font-stack);
        transition: var(--transition);
        gap: 1rem;
    }

    .faq-question:hover {
        color: var(--primary);
    }

    .faq-question .faq-icon {
        flex-shrink: 0;
        font-size: 0.8rem;
        color: var(--text-muted);
        transition: transform 0.2s ease;
    }

    .faq-item.open .faq-question {
        background: var(--card-bg);
        color: var(--primary);
    }

    .faq-item.open .faq-question .faq-icon {
        transform: rotate(180deg);
        color: var(--primary);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.25s ease, padding 0.25s ease;
        padding: 0 1.3rem;
        color: var(--text);
        font-size: 0.9rem;
        line-height: 1.9;
    }

    .faq-item.open .faq-answer {
        max-height: 260px;
        padding: 0 1.3rem 1.2rem;
    }

    /* Footer */
    .site-footer {
        background: var(--footer-bg);
        color: var(--footer-text);
        padding: 4rem 0 2rem;
        margin-top: 2rem;
    }

    .site-footer .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 1.5rem;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1.4fr;
        gap: 2.5rem;
        margin-bottom: 2.5rem;
    }

    .footer-brand h3 {
        color: #fff;
        font-size: 1.2rem;
        font-weight: 700;
        display: flex;
        align-items: center;
        gap: 0.6rem;
        margin: 0 0 1rem;
    }

    .footer-brand h3 .logo-icon {
        width: 28px;
        height: 28px;
        font-size: 0.85rem;
    }

    .footer-brand p {
        font-size: 0.85rem;
        line-height: 1.8;
        color: var(--footer-text);
        margin: 0;
    }

    .footer-col h4 {
        color: #fff;
        font-size: 0.95rem;
        font-weight: 600;
        margin: 0 0 1rem;
    }

    .footer-col ul {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 0.55rem;
    }

    .footer-col a {
        color: var(--footer-text);
        font-size: 0.85rem;
        text-decoration: none;
        transition: var(--transition);
    }

    .footer-col a:hover,
    .footer-col a:focus {
        color: #fff;
    }

    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, 0.12);
        padding-top: 1.5rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 1rem;
        flex-wrap: wrap;
        font-size: 0.78rem;
        color: rgba(223, 231, 238, 0.7);
    }

    .footer-bottom a {
        color: rgba(223, 231, 238, 0.9);
        font-size: 0.78rem;
    }

    .footer-bottom a:hover {
        color: #fff;
    }

    /* Responsive */
    @media (max-width: 1023px) {
        .editor-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }

        .subscribe-card {
            flex-direction: column;
            text-align: center;
            padding: 2.2rem 1.8rem;
        }

        .subscribe-form {
            min-width: 100%;
            width: 100%;
        }
    }

    @media (max-width: 639px) {
        .nav-toggle {
            display: block;
        }

        .main-nav {
            display: none;
            position: absolute;
            top: 68px;
            left: 0;
            right: 0;
            background: var(--card-bg);
            flex-direction: column;
            padding: 1rem 1.5rem;
            gap: 0;
            box-shadow: 0 12px 28px rgba(11, 94, 171, 0.12);
            border-bottom: 1px solid var(--border);
            z-index: 200;
        }

        .main-nav.is-open {
            display: flex;
        }

        .main-nav li {
            width: 100%;
        }

        .main-nav a {
            display: block;
            padding: 0.8rem 0;
            border-bottom: 1px solid var(--divider);
            font-size: 1rem;
        }

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

        .main-nav li:last-child a {
            border-bottom: none;
        }

        .cat-hero h1 {
            font-size: 1.8rem;
        }

        .cat-hero .desc {
            font-size: 0.92rem;
        }

        .news-item {
            flex-direction: column;
            gap: 0.8rem;
        }

        .news-date-block {
            width: auto;
            height: auto;
            flex-direction: row;
            gap: 0.5rem;
            padding: 0.4rem 0.8rem;
            border-radius: var(--radius-sm);
        }

        .news-date-block .day {
            font-size: 1.1rem;
        }

        .news-date-block .ym {
            font-size: 0.7rem;
        }

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

        .footer-grid {
            grid-template-columns: 1fr;
            gap: 1.8rem;
        }

        .footer-bottom {
            flex-direction: column;
            text-align: center;
            gap: 0.5rem;
        }

        .subscribe-form {
            flex-direction: column;
        }

        .subscribe-form .btn-accent {
            width: 100%;
        }

        .section {
            padding: 3.5rem 0;
        }

        .section-heading h2 {
            font-size: 1.4rem;
        }
    }

    @media (max-width: 520px) {
        .header-inner {
            padding: 0 1rem;
        }

        .logo {
            font-size: 1.15rem;
        }

        .logo-icon {
            width: 28px;
            height: 28px;
            font-size: 0.85rem;
        }

        .container {
            padding: 0 1rem;
        }

        .cat-hero {
            padding: 2.5rem 0 2rem;
        }

        .stats-number {
            font-size: 1.8rem;
        }

        .progress-nav-inner {
            padding: 0.5rem 1rem;
        }
    }

/* roulang page: category2 */
:root {
            --primary: #0B5EAB;
            --primary-hover: #094A88;
            --accent: #0B9B5A;
            --accent-light: #E6F5EE;
            --bg: #F4F7FA;
            --card-bg: #FFFFFF;
            --divider: #E8EEF4;
            --border: #DAE4ED;
            --text: #1F2A33;
            --text-heading: #142130;
            --text-muted: #5F6E7D;
            --footer-bg: #142130;
            --footer-text: #DFE7EE;
            --footer-link: #FFFFFF;
            --radius-lg: 12px;
            --radius-sm: 8px;
            --radius-btn: 6px;
            --shadow-default: 0 2px 8px rgba(11, 94, 171, 0.06);
            --shadow-hover: 0 12px 28px rgba(11, 94, 171, 0.12);
            --shadow-strong: 0 18px 44px rgba(11, 94, 171, 0.10);
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.2s ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-stack);
            color: var(--text);
            background: var(--bg);
            line-height: 1.9;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-lg);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--accent);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .section {
            padding: 4.2rem 0;
        }
        .section-alt {
            background: var(--card-bg);
            border-top: 1px solid var(--divider);
            border-bottom: 1px solid var(--divider);
        }
        .section-tight {
            padding: 2.6rem 0;
        }
        .text-muted {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.7;
        }
        .text-small {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .badge {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--accent-light);
            color: var(--accent);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .badge-blue {
            background: #E8F0F9;
            color: var(--primary);
        }
        .badge-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-muted);
        }
        .btn {
            display: inline-block;
            padding: 0.85rem 1.8rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            line-height: 1.5;
            letter-spacing: 0.01em;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(11, 94, 171, 0.22);
        }
        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-secondary:hover,
        .btn-secondary:focus {
            background: #EFF5FB;
            color: var(--primary-hover);
            border-color: var(--primary-hover);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: #087D48;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(11, 155, 90, 0.22);
        }
        .btn-sm {
            padding: 0.55rem 1.2rem;
            font-size: 0.85rem;
        }
        .btn-block {
            display: block;
            width: 100%;
        }

        /* Header & Navigation */
        .site-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(11, 94, 171, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0 1.5rem;
            max-width: 1200px;
            margin: 0 auto;
            gap: 1rem;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-heading);
            text-decoration: none;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .logo:hover,
        .logo:focus {
            color: var(--primary);
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.6rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .main-nav a {
            color: var(--text);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 0.5rem 0.1rem;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
            text-decoration: none;
            display: block;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            color: var(--primary-hover);
            border-bottom-color: var(--primary);
        }
        .main-nav a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            color: var(--text);
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg);
            color: var(--primary);
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            background: var(--card-bg);
            border-bottom: 1px solid var(--divider);
            padding: 0.7rem 0;
        }
        .breadcrumb {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.4rem;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .breadcrumb a {
            color: var(--text-muted);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover,
        .breadcrumb a:focus {
            color: var(--primary);
        }
        .breadcrumb li:last-child {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb-sep {
            color: #B0BECB;
            font-size: 0.75rem;
        }

        /* Category Title */
        .cat-title {
            padding: 3rem 0 1.8rem;
        }
        .cat-title h1 {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.25;
            margin-bottom: 1rem;
            position: relative;
            display: inline-block;
        }
        .cat-title h1::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
            margin-top: 0.6rem;
        }
        .cat-title p {
            font-size: 1rem;
            color: var(--text);
            max-width: 860px;
            line-height: 1.95;
            margin-top: 1.2rem;
        }

        /* List Cards */
        .data-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .data-list-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.4rem 1.6rem;
            display: flex;
            gap: 1.4rem;
            align-items: flex-start;
            transition: var(--transition);
            box-shadow: var(--shadow-default);
        }
        .data-list-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: #C5D8EC;
        }
        .data-list-icon {
            width: 48px;
            height: 48px;
            background: #E8F0F9;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .data-list-body {
            flex: 1;
            min-width: 0;
        }
        .data-list-title {
            font-size: 1.08rem;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.4;
            margin-bottom: 0.4rem;
        }
        .data-list-title a {
            color: var(--text-heading);
            text-decoration: none;
            transition: var(--transition);
        }
        .data-list-title a:hover,
        .data-list-title a:focus {
            color: var(--primary);
        }
        .data-list-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 0.7rem;
        }
        .data-list-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.7rem;
            margin-top: 0.6rem;
        }
        .data-list-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.35rem;
        }
        .data-list-tags {
            display: flex;
            gap: 0.4rem;
            flex-wrap: wrap;
        }
        .tag-link {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            background: #F0F4F8;
            border-radius: 14px;
            font-size: 0.75rem;
            color: var(--text-muted);
            text-decoration: none;
            transition: var(--transition);
            border: 1px solid var(--divider);
        }
        .tag-link:hover,
        .tag-link:focus {
            background: var(--accent-light);
            color: var(--accent);
            border-color: transparent;
        }
        .list-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
            white-space: nowrap;
        }
        .list-more-btn:hover,
        .list-more-btn:focus {
            color: var(--accent);
            gap: 0.6rem;
        }
        .list-more-wrap {
            text-align: center;
            margin-top: 1.6rem;
        }

        /* Editor's Pick */
        .pick-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.4rem;
        }
        .pick-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-default);
            display: flex;
            flex-direction: column;
        }
        .pick-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .pick-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }
        .pick-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            transition: transform 0.3s ease;
        }
        .pick-card:hover .pick-img img {
            transform: scale(1.03);
        }
        .pick-body {
            padding: 1.1rem 1.2rem 1.3rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .pick-title {
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.45;
            margin-bottom: 0.45rem;
        }
        .pick-title a {
            color: var(--text-heading);
            text-decoration: none;
            transition: var(--transition);
        }
        .pick-title a:hover,
        .pick-title a:focus {
            color: var(--primary);
        }
        .pick-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 0.8rem;
            flex: 1;
        }
        .pick-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        /* Tag Cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.7rem;
        }
        .tag-cloud-item {
            display: inline-block;
            padding: 0.5rem 1.1rem;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 22px;
            font-size: 0.88rem;
            color: var(--text);
            text-decoration: none;
            transition: var(--transition);
            box-shadow: var(--shadow-default);
        }
        .tag-cloud-item:hover,
        .tag-cloud-item:focus {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        /* Stats Snapshot */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.4rem;
        }
        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-default);
            transition: var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 0.3rem;
            letter-spacing: -0.01em;
        }
        .stat-label {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 0.4rem;
        }
        .stat-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Subscribe CTA */
        .subscribe-box {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 2rem 2rem;
            display: flex;
            align-items: center;
            gap: 2rem;
            box-shadow: var(--shadow-default);
            flex-wrap: wrap;
        }
        .subscribe-info {
            flex: 1;
            min-width: 260px;
        }
        .subscribe-info h2 {
            font-size: 1.4rem;
            font-weight: 650;
            color: var(--text-heading);
            margin-bottom: 0.5rem;
        }
        .subscribe-info p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .subscribe-form {
            display: flex;
            gap: 0.6rem;
            min-width: 320px;
            flex: 0 0 auto;
        }
        .subscribe-form input[type="email"] {
            flex: 1;
            padding: 0.75rem 1rem;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            font-family: var(--font-stack);
            font-size: 0.9rem;
            color: var(--text);
            background: #fff;
            transition: var(--transition);
            min-width: 0;
        }
        .subscribe-form input[type="email"]:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(11, 94, 171, 0.12);
            outline: none;
        }
        .subscribe-form .btn {
            white-space: nowrap;
            flex-shrink: 0;
        }

        /* FAQ */
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-default);
        }
        .faq-item:hover {
            border-color: #C5D8EC;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.4rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-heading);
            cursor: pointer;
            background: #F8FAFC;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-stack);
            transition: var(--transition);
            line-height: 1.5;
        }
        .faq-question:hover,
        .faq-question:focus {
            color: var(--primary);
            background: #F0F5FA;
        }
        .faq-question .faq-icon {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 1.4rem 1.2rem;
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.8;
            display: none;
            background: #fff;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* Footer */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 3.5rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer-brand h3 .logo-icon {
            width: 28px;
            height: 28px;
            font-size: 0.85rem;
            background: var(--primary);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            flex-shrink: 0;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.8;
            color: var(--footer-text);
            max-width: 340px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.55rem;
        }
        .footer-col ul a {
            color: var(--footer-text);
            font-size: 0.85rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-col ul a:hover,
        .footer-col ul a:focus {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(223, 231, 238, 0.15);
            padding-top: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
            font-size: 0.78rem;
            color: var(--footer-text);
        }
        .footer-bottom a {
            color: #fff;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-bottom a:hover,
        .footer-bottom a:focus {
            color: var(--accent);
        }

        /* Section headings */
        .section-heading {
            margin-bottom: 2.2rem;
        }
        .section-heading h2 {
            font-size: 1.7rem;
            font-weight: 650;
            color: var(--text-heading);
            line-height: 1.3;
            margin-bottom: 0.5rem;
            position: relative;
            display: inline-block;
        }
        .section-heading h2::after {
            content: '';
            display: block;
            width: 44px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
            margin-top: 0.5rem;
        }
        .section-heading p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.75;
            max-width: 720px;
            margin-top: 0.8rem;
        }

        /* Responsive */
        @media screen and (max-width: 1023px) {
            .pick-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }
        @media screen and (max-width: 767px) {
            .header-inner {
                padding: 0 1rem;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                gap: 0;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 10px 24px rgba(11, 94, 171, 0.08);
                padding: 0.5rem 1rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav li {
                width: 100%;
            }
            .main-nav a {
                padding: 0.7rem 0.2rem;
                border-bottom: 1px solid var(--divider);
                font-size: 0.95rem;
            }
            .main-nav li:last-child a {
                border-bottom: none;
            }
            .cat-title h1 {
                font-size: 1.9rem;
            }
            .data-list-card {
                flex-direction: column;
                gap: 0.8rem;
                padding: 1.2rem;
            }
            .data-list-icon {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
            .pick-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 0.9rem;
            }
            .stat-card {
                padding: 1.3rem;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .subscribe-box {
                flex-direction: column;
                gap: 1.2rem;
                padding: 1.5rem;
                align-items: stretch;
            }
            .subscribe-form {
                min-width: 0;
                flex-direction: column;
            }
            .subscribe-form .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }
            .section {
                padding: 3rem 0;
            }
            .subscribe-box {
                flex-direction: column;
            }
        }
        @media screen and (max-width: 519px) {
            .cat-title h1 {
                font-size: 1.6rem;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .data-list-desc {
                font-size: 0.85rem;
            }
            .tag-cloud-item {
                padding: 0.4rem 0.8rem;
                font-size: 0.8rem;
            }
            .faq-question {
                padding: 0.9rem 1rem;
                font-size: 0.88rem;
            }
            .faq-answer {
                padding: 0 1rem 1rem;
                font-size: 0.82rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #0B5EAB;
            --primary-hover: #094A88;
            --accent: #0B9B5A;
            --accent-light: #E6F5EE;
            --bg: #F4F7FA;
            --card-bg: #FFFFFF;
            --divider: #E8EEF4;
            --border: #DAE4ED;
            --text: #1F2A33;
            --text-heading: #142130;
            --text-muted: #5F6E7D;
            --footer-bg: #142130;
            --footer-text: #DFE7EE;
            --footer-link: #FFFFFF;
            --radius-lg: 12px;
            --radius-sm: 8px;
            --radius-btn: 6px;
            --shadow-default: 0 2px 8px rgba(11, 94, 171, 0.06);
            --shadow-hover: 0 12px 28px rgba(11, 94, 171, 0.12);
            --shadow-strong: 0 18px 44px rgba(11, 94, 171, 0.10);
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.2s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            color: var(--text);
            background: var(--bg);
            line-height: 1.9;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-lg);
        }

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

        a:hover,
        a:focus {
            color: var(--accent);
            text-decoration: none;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .section {
            padding: 4.5rem 0;
        }

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

        .section-tight {
            padding: 2.5rem 0;
        }

        .text-muted {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.65;
        }

        .text-small {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .badge {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--accent-light);
            color: var(--accent);
            letter-spacing: 0.02em;
        }

        .badge-blue {
            background: #E8F0F9;
            color: var(--primary);
        }

        .btn {
            display: inline-block;
            padding: 0.85rem 1.8rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            line-height: 1.5;
            letter-spacing: 0.01em;
            text-decoration: none;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(11, 94, 171, 0.22);
        }

        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-secondary:hover,
        .btn-secondary:focus {
            background: #EFF5FB;
            color: var(--primary-hover);
            border-color: var(--primary-hover);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
        }

        .btn-accent:hover,
        .btn-accent:focus {
            background: #087D48;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(11, 155, 90, 0.22);
        }

        .btn-sm {
            padding: 0.55rem 1.2rem;
            font-size: 0.85rem;
        }

        /* Header & Navigation */
        .site-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(11, 94, 171, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0 1.5rem;
            max-width: 1200px;
            margin: 0 auto;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-heading);
            text-decoration: none;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

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

        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.6rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav a {
            color: var(--text);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 0.5rem 0.1rem;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
        }

        .main-nav a:hover,
        .main-nav a:focus {
            color: var(--primary-hover);
            border-bottom-color: var(--primary);
        }

        .main-nav a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-heading);
            cursor: pointer;
            padding: 0.5rem;
            line-height: 1;
            transition: var(--transition);
        }

        .nav-toggle:hover,
        .nav-toggle:focus {
            color: var(--primary);
        }

        /* Breadcrumb bar */
        .breadcrumb-bar {
            background: var(--bg);
            border-bottom: 1px solid var(--divider);
            padding: 0.6rem 0;
        }

        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.4rem;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .breadcrumb-bar a {
            color: var(--text-muted);
            font-weight: 500;
        }

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

        .breadcrumb-sep {
            color: var(--border);
            margin: 0 0.2rem;
        }

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

        /* Section title area */
        .page-title-area {
            background: linear-gradient(180deg, #EDF3F9 0%, var(--bg) 100%);
            border-bottom: 1px solid var(--divider);
            padding: 3rem 0 2.5rem;
        }

        .page-title-area h1 {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.25;
            margin: 0 0 1rem;
            letter-spacing: 0.01em;
        }

        .page-title-area .title-desc {
            font-size: 1rem;
            color: var(--text);
            line-height: 1.9;
            max-width: 860px;
            margin: 0;
        }

        /* Cards */
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-default);
            transition: var(--transition);
            overflow: hidden;
        }

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

        .card-body {
            padding: 1.5rem 1.8rem;
        }

        .card-title {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.45;
            margin: 0 0 0.6rem;
        }

        .card-title a {
            color: var(--text-heading);
            display: block;
        }

        .card-title a:hover,
        .card-title a:focus {
            color: var(--primary);
        }

        .card-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.8rem;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0.8rem;
        }

        .card-meta .date {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        .card-summary {
            font-size: 0.92rem;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 1rem;
        }

        .read-more {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--primary);
            transition: var(--transition);
        }

        .read-more:hover,
        .read-more:focus {
            color: var(--accent);
            gap: 0.6rem;
        }

        /* Main article list */
        .article-list-item {
            display: flex;
            gap: 1.8rem;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.5rem 1.8rem;
            margin-bottom: 1.2rem;
            box-shadow: var(--shadow-default);
            transition: var(--transition);
        }

        .article-list-item:hover {
            box-shadow: var(--shadow-hover);
            background: #F8FBFD;
        }

        .article-list-thumb {
            flex-shrink: 0;
            width: 180px;
            height: 120px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--divider);
        }

        .article-list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-sm);
        }

        .article-list-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .article-list-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            margin-bottom: 0.5rem;
        }

        .article-list-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
        }

        /* Editor picks */
        .editor-pick-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-default);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .editor-pick-thumb {
            height: 160px;
            overflow: hidden;
            background: var(--divider);
            position: relative;
        }

        .editor-pick-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }

        .editor-pick-body {
            padding: 1.2rem 1.5rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .editor-pick-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.5;
            margin: 0 0 0.5rem;
        }

        .editor-pick-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 1rem;
            flex: 1;
        }

        /* Tag cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.7rem;
        }

        .tag-cloud a {
            display: inline-block;
            padding: 0.45rem 1rem;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
        }

        .tag-cloud a:hover,
        .tag-cloud a:focus {
            background: var(--accent-light);
            border-color: var(--accent);
            color: var(--accent);
        }

        /* Stats cards */
        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-default);
            transition: var(--transition);
        }

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

        .stat-number {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text);
            font-weight: 500;
            margin-bottom: 0.3rem;
        }

        .stat-desc {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* Subscribe CTA */
        .subscribe-cta {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 2.5rem 2rem;
            box-shadow: var(--shadow-strong);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .subscribe-cta h2 {
            font-size: 1.55rem;
            font-weight: 650;
            color: var(--text-heading);
            margin: 0 0 0.5rem;
            line-height: 1.35;
        }

        .subscribe-cta p {
            margin: 0;
            color: var(--text-muted);
            font-size: 0.92rem;
        }

        .subscribe-form {
            display: flex;
            gap: 0.5rem;
            flex-shrink: 0;
            min-width: 320px;
        }

        .subscribe-form input[type="email"] {
            flex: 1;
            padding: 0.85rem 1.2rem;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            font-size: 0.92rem;
            font-family: var(--font-stack);
            color: var(--text);
            background: #fff;
            transition: var(--transition);
            min-width: 0;
        }

        .subscribe-form input[type="email"]:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(11, 94, 171, 0.12);
            outline: none;
        }

        .subscribe-form .btn {
            flex-shrink: 0;
        }

        /* FAQ */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 0.8rem;
            overflow: hidden;
            background: var(--card-bg);
            transition: var(--transition);
        }

        .faq-item[open] {
            border-color: var(--primary);
            box-shadow: var(--shadow-default);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-heading);
            font-size: 0.95rem;
            background: var(--bg);
            transition: var(--transition);
            list-style: none;
            user-select: none;
        }

        .faq-question::-webkit-details-marker {
            display: none;
        }

        .faq-question:hover {
            background: #EDF3F9;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            color: var(--primary);
            font-size: 0.9rem;
            transition: transform 0.25s ease;
            margin-left: 1rem;
        }

        .faq-item[open] .faq-question .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 1.1rem 1.5rem 1.3rem;
            font-size: 0.9rem;
            color: var(--text);
            line-height: 1.85;
            background: var(--card-bg);
            border-top: 1px solid var(--divider);
        }

        /* Section headers */
        .section-header {
            margin-bottom: 2.5rem;
        }

        .section-header h2 {
            font-size: 1.7rem;
            font-weight: 650;
            color: var(--text-heading);
            line-height: 1.3;
            margin: 0 0 0.6rem;
        }

        .section-header p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
            max-width: 720px;
        }

        /* Footer */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 4rem 0 2rem;
            margin-top: 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .site-footer h3 {
            color: #fff;
            font-size: 1.15rem;
            font-weight: 600;
            margin: 0 0 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin: 0 0 1rem;
            letter-spacing: 0.03em;
        }

        .footer-brand p {
            color: var(--footer-text);
            font-size: 0.88rem;
            line-height: 1.8;
            margin-bottom: 0.5rem;
        }

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

        .site-footer ul li {
            margin-bottom: 0.6rem;
        }

        .site-footer ul a {
            color: var(--footer-text);
            font-size: 0.88rem;
            transition: var(--transition);
        }

        .site-footer ul a:hover,
        .site-footer ul a:focus {
            color: var(--footer-link);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(223, 231, 238, 0.25);
            font-size: 0.8rem;
            color: var(--footer-text);
        }

        .footer-bottom a {
            color: var(--footer-link);
            margin: 0 0.3rem;
        }

        .footer-bottom a:hover,
        .footer-bottom a:focus {
            color: #fff;
            text-decoration: underline;
        }

        /* Responsive */
        @media screen and (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }

            .article-list-item {
                flex-direction: column;
                gap: 1rem;
            }

            .article-list-thumb {
                width: 100%;
                height: 180px;
            }

            .subscribe-cta {
                flex-direction: column;
                align-items: flex-start;
            }

            .subscribe-form {
                width: 100%;
                min-width: auto;
            }
        }

        @media screen and (max-width: 767px) {
            .header-inner {
                flex-wrap: wrap;
                padding: 0.75rem 1.2rem;
            }

            .nav-toggle {
                display: block;
            }

            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0;
                padding: 0.75rem 0 0.5rem;
                border-top: 1px solid var(--divider);
                margin-top: 0.75rem;
            }

            .main-nav.is-open {
                display: flex;
            }

            .main-nav li {
                padding: 0.35rem 0;
            }

            .main-nav a {
                display: block;
                padding: 0.5rem 0;
                font-size: 0.95rem;
                border-bottom: 1px solid var(--divider);
            }

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

            .page-title-area h1 {
                font-size: 1.9rem;
            }

            .section {
                padding: 3rem 0;
            }

            .stat-card {
                padding: 1.5rem 1rem;
            }

            .stat-number {
                font-size: 1.8rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.6rem;
            }

            .subscribe-form {
                flex-direction: column;
                gap: 0.6rem;
            }

            .subscribe-form .btn {
                width: 100%;
            }

            .article-list-footer {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }
        }

        @media screen and (max-width: 519px) {
            :root {
                font-size: 15px;
            }

            .container {
                padding: 0 1rem;
            }

            .page-title-area {
                padding: 2rem 0 1.8rem;
            }

            .page-title-area h1 {
                font-size: 1.6rem;
            }

            .article-list-item {
                padding: 1.2rem;
            }

            .article-list-thumb {
                height: 140px;
            }

            .editor-pick-thumb {
                height: 130px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #0B5EAB;
            --primary-hover: #094A88;
            --accent: #0B9B5A;
            --accent-light: #E6F5EE;
            --bg: #F4F7FA;
            --card-bg: #FFFFFF;
            --divider: #E8EEF4;
            --border: #DAE4ED;
            --text: #1F2A33;
            --text-heading: #142130;
            --text-muted: #5F6E7D;
            --footer-bg: #142130;
            --footer-text: #DFE7EE;
            --footer-link: #FFFFFF;
            --radius-lg: 12px;
            --radius-sm: 8px;
            --radius-btn: 6px;
            --shadow-default: 0 2px 8px rgba(11, 94, 171, 0.06);
            --shadow-hover: 0 12px 28px rgba(11, 94, 171, 0.12);
            --shadow-strong: 0 18px 44px rgba(11, 94, 171, 0.10);
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.2s ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-stack);
            color: var(--text);
            background: var(--bg);
            line-height: 1.9;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-lg);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--accent);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .section {
            padding: 5rem 0;
        }
        .section-alt {
            background: var(--card-bg);
        }
        .section-tight {
            padding: 3rem 0;
        }
        .text-muted {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
        }
        .text-small {
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .badge {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--accent-light);
            color: var(--accent);
            letter-spacing: 0.02em;
        }
        .badge-blue {
            background: #E8F0F9;
            color: var(--primary);
        }
        .btn {
            display: inline-block;
            padding: 0.85rem 1.8rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            line-height: 1.5;
            letter-spacing: 0.01em;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(11, 94, 171, 0.22);
        }
        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-secondary:hover,
        .btn-secondary:focus {
            background: #EFF5FB;
            color: var(--primary-hover);
            border-color: var(--primary-hover);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: #087D48;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(11, 155, 90, 0.22);
        }
        .btn-sm {
            padding: 0.55rem 1.2rem;
            font-size: 0.85rem;
        }
        .site-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(11, 94, 171, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0 1.5rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-heading);
            text-decoration: none;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .logo:hover,
        .logo:focus {
            color: var(--primary);
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.6rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .main-nav a {
            color: var(--text);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 0.5rem 0.1rem;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .main-nav a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--text-heading);
            cursor: pointer;
            padding: 0.5rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle:hover,
        .nav-toggle:focus {
            color: var(--primary);
            background: #EFF5FB;
        }
        .progress-nav {
            background: #fff;
            border-bottom: 1px solid var(--border);
            display: none;
        }
        .progress-nav-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0.6rem 1.5rem;
            display: flex;
            align-items: center;
            gap: 1.8rem;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .progress-step {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            text-decoration: none;
            transition: var(--transition);
        }
        .progress-step .step-dot {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            border: 2px solid var(--border);
            color: var(--text-muted);
            flex-shrink: 0;
            transition: var(--transition);
        }
        .progress-step.active {
            color: var(--primary);
            font-weight: 600;
        }
        .progress-step.active .step-dot {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .progress-step:hover,
        .progress-step:focus {
            color: var(--primary);
        }
        .progress-step .step-arrow {
            font-size: 0.6rem;
            color: var(--border);
            margin-left: 0.2rem;
        }
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 4rem 0 2rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 2.5rem;
        }
        .site-footer h3 {
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .site-footer h4 {
            color: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .site-footer p {
            font-size: 0.88rem;
            line-height: 1.8;
            color: var(--footer-text);
        }
        .site-footer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .site-footer ul li {
            margin-bottom: 0.5rem;
        }
        .site-footer ul a {
            color: var(--footer-link);
            font-size: 0.88rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .site-footer ul a:hover,
        .site-footer ul a:focus {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.8rem;
            font-size: 0.8rem;
            color: var(--footer-text);
        }
        .footer-bottom a {
            color: var(--footer-link);
            text-decoration: none;
            margin: 0 0.3rem;
        }
        .footer-bottom a:hover,
        .footer-bottom a:focus {
            color: var(--accent);
        }
        .category-header {
            background: linear-gradient(135deg, #FFFFFF 0%, #F4F7FA 100%);
            border-bottom: 1px solid var(--border);
            padding: 3.5rem 0 2.5rem;
            position: relative;
            overflow: hidden;
        }
        .category-header::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(11, 94, 171, 0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-header h1 {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.25;
            margin-bottom: 1rem;
            position: relative;
            z-index: 1;
        }
        .category-header .category-desc {
            font-size: 1.05rem;
            color: var(--text);
            line-height: 1.9;
            max-width: 900px;
            position: relative;
            z-index: 1;
            margin-bottom: 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover,
        .breadcrumb a:focus {
            color: var(--accent);
        }
        .breadcrumb .separator {
            color: var(--border);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--text-muted);
            cursor: default;
        }
        .list-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.8rem 2rem;
            display: flex;
            gap: 1.8rem;
            align-items: flex-start;
            transition: var(--transition);
            box-shadow: var(--shadow-default);
            margin-bottom: 1.2rem;
        }
        .list-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: #C5D6E6;
        }
        .list-card .card-thumb {
            width: 140px;
            height: 100px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .list-card .card-content {
            flex: 1;
            min-width: 0;
        }
        .list-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 0.6rem;
            line-height: 1.4;
        }
        .list-card h3 a {
            color: var(--text-heading);
            text-decoration: none;
        }
        .list-card h3 a:hover,
        .list-card h3 a:focus {
            color: var(--primary);
        }
        .list-card .card-summary {
            font-size: 0.92rem;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 0.8rem;
        }
        .list-card .card-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.8rem;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0.8rem;
        }
        .list-card .card-meta .date {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .list-card .card-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .list-card .read-more {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: var(--transition);
        }
        .list-card .read-more:hover,
        .list-card .read-more:focus {
            color: var(--accent);
            gap: 0.6rem;
        }
        .featured-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-default);
            height: 100%;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: #C5D6E6;
        }
        .featured-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .featured-card .featured-body {
            padding: 1.3rem 1.5rem 1.5rem;
        }
        .featured-card h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 0.5rem;
            line-height: 1.45;
        }
        .featured-card h3 a {
            color: var(--text-heading);
            text-decoration: none;
        }
        .featured-card h3 a:hover,
        .featured-card h3 a:focus {
            color: var(--primary);
        }
        .featured-card .featured-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-wrap: wrap;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.7rem;
            padding: 0.5rem 0;
        }
        .tag-cloud .tag {
            display: inline-block;
            padding: 0.5rem 1.2rem;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 25px;
            font-size: 0.85rem;
            color: var(--text);
            text-decoration: none;
            transition: var(--transition);
            white-space: nowrap;
        }
        .tag-cloud .tag:hover,
        .tag-cloud .tag:focus {
            border-color: var(--primary);
            color: var(--primary);
            background: #EFF5FB;
            box-shadow: var(--shadow-default);
        }
        .metric-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 2rem 1.8rem;
            text-align: center;
            transition: var(--transition);
            box-shadow: var(--shadow-default);
            height: 100%;
        }
        .metric-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .metric-number {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 0.5rem;
            letter-spacing: -0.02em;
        }
        .metric-label {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 0.3rem;
        }
        .metric-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .subscribe-card {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
            border-radius: var(--radius-lg);
            padding: 2.8rem 2.5rem;
            box-shadow: var(--shadow-strong);
            position: relative;
            overflow: hidden;
        }
        .subscribe-card::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }
        .subscribe-card h2 {
            color: #fff;
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            position: relative;
            z-index: 1;
        }
        .subscribe-card p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
        }
        .subscribe-form {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .subscribe-form input[type="email"] {
            flex: 1;
            min-width: 220px;
            padding: 0.85rem 1.2rem;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.95);
            font-size: 0.92rem;
            color: var(--text);
            transition: var(--transition);
        }
        .subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: #fff;
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.25);
        }
        .subscribe-form .btn-accent {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 0.85rem 1.8rem;
            font-weight: 600;
            cursor: pointer;
            border-radius: var(--radius-btn);
            font-size: 0.95rem;
            transition: var(--transition);
            white-space: nowrap;
        }
        .subscribe-form .btn-accent:hover,
        .subscribe-form .btn-accent:focus {
            background: #087D48;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-default);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-item details {
            width: 100%;
        }
        .faq-item summary {
            padding: 1.3rem 1.8rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-heading);
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            transition: var(--transition);
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item details[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item summary:hover {
            color: var(--primary);
            background: #FAFBFD;
        }
        .faq-item .faq-answer {
            padding: 0 1.8rem 1.5rem;
            color: var(--text);
            font-size: 0.92rem;
            line-height: 1.85;
            border-top: 1px solid var(--divider);
            padding-top: 1rem;
        }
        .faq-item details[open] {
            border-color: #C5D6E6;
            box-shadow: var(--shadow-hover);
        }
        .list-actions-bottom {
            text-align: center;
            padding-top: 1.5rem;
        }
        .section-heading {
            margin-bottom: 2.5rem;
        }
        .section-heading h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.3;
            margin-bottom: 0.8rem;
            position: relative;
            padding-bottom: 0.8rem;
        }
        .section-heading h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 48px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .section-heading p {
            font-size: 0.98rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 0;
            max-width: 750px;
        }
        @media screen and (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .category-header h1 {
                font-size: 2.2rem;
            }
            .list-card {
                padding: 1.4rem 1.4rem;
                gap: 1.2rem;
            }
            .list-card .card-thumb {
                width: 110px;
                height: 85px;
            }
            .metric-number {
                font-size: 2rem;
            }
        }
        @media screen and (max-width: 767px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: var(--card-bg);
                border-bottom: 1px solid var(--border);
                box-shadow: 0 8px 24px rgba(11, 94, 171, 0.12);
                padding: 1rem 1.5rem;
                gap: 0.8rem;
                z-index: 99;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.6rem 0.3rem;
                font-size: 1rem;
                border-bottom: 1px solid var(--divider);
            }
            .main-nav a:last-child {
                border-bottom: none;
            }
            .main-nav a.active {
                border-bottom-color: var(--primary);
            }
            .progress-nav-inner {
                gap: 1.2rem;
                padding: 0.5rem 1rem;
            }
            .progress-step {
                font-size: 0.78rem;
            }
            .progress-step .step-dot {
                width: 20px;
                height: 20px;
                font-size: 0.68rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .category-header {
                padding: 2.5rem 0 1.8rem;
            }
            .category-header h1 {
                font-size: 1.8rem;
            }
            .category-header .category-desc {
                font-size: 0.95rem;
            }
            .section {
                padding: 3.5rem 0;
            }
            .section-heading h2 {
                font-size: 1.5rem;
            }
            .list-card {
                flex-direction: column;
                padding: 1.2rem;
                gap: 0.8rem;
            }
            .list-card .card-thumb {
                width: 100%;
                height: 160px;
            }
            .subscribe-card {
                padding: 1.8rem 1.5rem;
            }
            .subscribe-card h2 {
                font-size: 1.4rem;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input[type="email"] {
                min-width: auto;
                width: 100%;
            }
            .subscribe-form .btn-accent {
                width: 100%;
                text-align: center;
            }
            .metric-card {
                padding: 1.5rem 1.2rem;
            }
            .metric-number {
                font-size: 1.8rem;
            }
            .faq-item summary {
                padding: 1rem 1.2rem;
                font-size: 0.9rem;
            }
            .faq-item .faq-answer {
                padding: 0 1.2rem 1.2rem;
                font-size: 0.88rem;
            }
        }
        @media screen and (max-width: 519px) {
            .header-inner {
                padding: 0 1rem;
                min-height: 60px;
            }
            .logo {
                font-size: 1.15rem;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.85rem;
            }
            .main-nav {
                top: 60px;
                padding: 0.8rem 1rem;
            }
            .category-header h1 {
                font-size: 1.55rem;
            }
            .category-header .category-desc {
                font-size: 0.88rem;
                line-height: 1.8;
            }
            .breadcrumb {
                font-size: 0.78rem;
                gap: 0.3rem;
            }
            .section-heading h2 {
                font-size: 1.35rem;
            }
            .section-heading p {
                font-size: 0.88rem;
            }
            .featured-card img {
                height: 150px;
            }
            .tag-cloud .tag {
                padding: 0.4rem 1rem;
                font-size: 0.78rem;
            }
            .list-card h3 {
                font-size: 1rem;
            }
            .list-card .card-summary {
                font-size: 0.85rem;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #0B5EAB;
            --primary-hover: #094A88;
            --accent: #0B9B5A;
            --accent-light: #E6F5EE;
            --bg: #F4F7FA;
            --card-bg: #FFFFFF;
            --divider: #E8EEF4;
            --border: #DAE4ED;
            --text: #1F2A33;
            --text-heading: #142130;
            --text-muted: #5F6E7D;
            --footer-bg: #142130;
            --footer-text: #DFE7EE;
            --footer-link: #FFFFFF;
            --radius-lg: 12px;
            --radius-sm: 8px;
            --radius-btn: 6px;
            --shadow-default: 0 2px 8px rgba(11, 94, 171, 0.06);
            --shadow-hover: 0 12px 28px rgba(11, 94, 171, 0.12);
            --shadow-strong: 0 18px 44px rgba(11, 94, 171, 0.10);
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.2s ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-stack);
            color: var(--text);
            background: var(--bg);
            line-height: 1.9;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-lg);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--accent);
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .section {
            padding: 5rem 0;
        }
        .section-alt {
            background: var(--card-bg);
        }
        .section-tight {
            padding: 3rem 0;
        }
        .text-muted {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
        }
        .text-small {
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .badge {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--accent-light);
            color: var(--accent);
            letter-spacing: 0.02em;
        }
        .badge-blue {
            background: #E8F0F9;
            color: var(--primary);
        }
        .btn {
            display: inline-block;
            padding: 0.85rem 1.8rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            text-align: center;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            line-height: 1.5;
            letter-spacing: 0.01em;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(11, 94, 171, 0.22);
        }
        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-secondary:hover,
        .btn-secondary:focus {
            background: #EFF5FB;
            color: var(--primary-hover);
            border-color: var(--primary-hover);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: #087D48;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(11, 155, 90, 0.22);
        }
        .btn-sm {
            padding: 0.55rem 1.2rem;
            font-size: 0.85rem;
        }
        .btn-block {
            display: block;
            width: 100%;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        /* Header & Navigation */
        .site-header {
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 1px 4px rgba(11, 94, 171, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0 1.5rem;
            max-width: 1200px;
            margin: 0 auto;
            gap: 1rem;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-heading);
            text-decoration: none;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .logo:hover,
        .logo:focus {
            color: var(--primary);
        }
        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.6rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .main-nav a {
            color: var(--text);
            font-weight: 500;
            font-size: 0.92rem;
            padding: 0.5rem 0.1rem;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
            text-decoration: none;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            color: var(--primary-hover);
            border-bottom-color: var(--primary);
        }
        .main-nav a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-heading);
            cursor: pointer;
            padding: 0.4rem;
            line-height: 1;
        }
        .progress-nav {
            background: var(--card-bg);
            border-top: 1px solid var(--divider);
            border-bottom: 1px solid var(--divider);
        }
        .progress-nav-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0.6rem 1.5rem;
            display: flex;
            align-items: center;
            gap: 1.2rem;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .progress-step {
            display: flex;
            align-items: center;
            gap: 0.45rem;
            font-size: 0.82rem;
            color: var(--text-muted);
            text-decoration: none;
            white-space: nowrap;
            transition: var(--transition);
        }
        .progress-step .step-dot {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 2px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--text-muted);
            flex-shrink: 0;
            transition: var(--transition);
        }
        .progress-step.active {
            color: var(--primary);
        }
        .progress-step.active .step-dot {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .progress-step:hover,
        .progress-step:focus {
            color: var(--primary-hover);
        }
        .progress-step .step-arrow {
            font-size: 0.7rem;
            color: var(--border);
            margin-left: 0.2rem;
        }
        .progress-step:last-child .step-arrow {
            display: none;
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background: var(--card-bg);
            border-bottom: 1px solid var(--divider);
            padding: 0.7rem 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.4rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb li + li::before {
            content: "/";
            margin: 0 0.5rem;
            color: var(--border);
            font-size: 0.8rem;
        }
        .breadcrumb a {
            color: var(--text-muted);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover,
        .breadcrumb a:focus {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Section headings */
        .section-heading {
            margin-bottom: 2.5rem;
        }
        .section-heading h2 {
            color: var(--text-heading);
            font-size: 1.8rem;
            font-weight: 650;
            line-height: 1.3;
            margin-bottom: 0.75rem;
        }
        .section-heading h2 .accent-line {
            display: inline-block;
            width: 40px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
            margin-bottom: 0.2rem;
        }
        .section-heading p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            margin: 0;
            max-width: 720px;
        }

        /* Page hero (category H1 area) */
        .page-hero {
            background: linear-gradient(135deg, #F4F7FA 0%, #E8F0F9 100%);
            border-bottom: 1px solid var(--divider);
            padding: 3.5rem 0 2.5rem;
        }
        .page-hero h1 {
            color: var(--text-heading);
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 1rem;
        }
        .page-hero .hero-desc {
            color: var(--text);
            font-size: 1rem;
            line-height: 2;
            max-width: 900px;
            margin: 0;
        }
        .page-hero .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 1.2rem;
        }

        /* Team archive list */
        .team-list {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .team-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-default);
            padding: 1.5rem;
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
            transition: var(--transition);
        }
        .team-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: #C9D8E8;
            transform: translateY(-2px);
        }
        .team-card .team-thumb {
            width: 160px;
            height: 120px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .team-card .team-info {
            flex: 1;
            min-width: 0;
        }
        .team-card .team-info h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.4;
            margin: 0 0 0.5rem;
        }
        .team-card .team-info h3 a {
            color: var(--text-heading);
            text-decoration: none;
            transition: var(--transition);
        }
        .team-card .team-info h3 a:hover,
        .team-card .team-info h3 a:focus {
            color: var(--primary);
        }
        .team-card .team-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.7rem;
            margin-bottom: 0.6rem;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .team-card .team-meta .date {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .team-card .team-meta .tag {
            background: var(--accent-light);
            color: var(--accent);
            padding: 0.15rem 0.7rem;
            border-radius: 20px;
            font-size: 0.75rem;
        }
        .team-card .team-desc {
            color: var(--text);
            font-size: 0.92rem;
            line-height: 1.8;
            margin: 0 0 0.8rem;
        }
        .team-card .read-more {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        .team-card .read-more:hover,
        .team-card .read-more:focus {
            color: var(--accent);
        }
        .team-card .read-more i {
            font-size: 0.75rem;
        }
        .list-footer {
            text-align: center;
            margin-top: 2rem;
        }

        /* Editor picks */
        .editor-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .editor-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-default);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .editor-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .editor-card .editor-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .editor-card .editor-body {
            padding: 1.2rem 1.3rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .editor-card .editor-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.5;
            margin: 0 0 0.5rem;
        }
        .editor-card .editor-body h3 a {
            color: var(--text-heading);
            text-decoration: none;
            transition: var(--transition);
        }
        .editor-card .editor-body h3 a:hover,
        .editor-card .editor-body h3 a:focus {
            color: var(--primary);
        }
        .editor-card .editor-body .desc {
            font-size: 0.86rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0 0 0.8rem;
            flex: 1;
        }
        .editor-card .editor-body .meta-line {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.78rem;
            color: var(--text-muted);
            border-top: 1px solid var(--divider);
            padding-top: 0.7rem;
        }

        /* Tag cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.7rem;
            justify-content: flex-start;
            padding: 0.5rem 0;
        }
        .tag-cloud a {
            display: inline-block;
            padding: 0.45rem 1.1rem;
            border-radius: 20px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 0.85rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .tag-cloud a:hover,
        .tag-cloud a:focus {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .tag-cloud a.hot {
            background: var(--accent-light);
            border-color: var(--accent-light);
            color: var(--accent);
        }
        .tag-cloud a.hot:hover,
        .tag-cloud a.hot:focus {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }

        /* Stats snapshot */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-default);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .stat-card .stat-num {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            display: block;
            margin-bottom: 0.5rem;
        }
        .stat-card .stat-label {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 0.3rem;
        }
        .stat-card .stat-desc {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Subscribe CTA */
        .subscribe-card {
            background: var(--primary);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-strong);
            padding: 2.5rem 2.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            flex-wrap: wrap;
        }
        .subscribe-card .subscribe-text {
            flex: 1;
            min-width: 260px;
        }
        .subscribe-card .subscribe-text h3 {
            color: #fff;
            font-size: 1.4rem;
            font-weight: 600;
            margin: 0 0 0.5rem;
        }
        .subscribe-card .subscribe-text p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.92rem;
            margin: 0;
            line-height: 1.7;
        }
        .subscribe-form {
            display: flex;
            gap: 0.6rem;
            min-width: 280px;
            flex-shrink: 0;
        }
        .subscribe-form input[type="email"] {
            flex: 1;
            padding: 0.8rem 1.2rem;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            font-size: 0.92rem;
            background: #fff;
            color: var(--text);
            outline: none;
            transition: var(--transition);
        }
        .subscribe-form input[type="email"]:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(11, 155, 90, 0.18);
        }
        .subscribe-form .btn-accent {
            white-space: nowrap;
            flex-shrink: 0;
            background: var(--accent);
            color: #fff;
            border: none;
        }
        .subscribe-form .btn-accent:hover,
        .subscribe-form .btn-accent:focus {
            background: #087D48;
            color: #fff;
            transform: translateY(-2px);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-default);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.2rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-heading);
            font-size: 0.98rem;
            list-style: none;
            background: var(--bg);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            font-size: 0.8rem;
            color: var(--primary);
            transition: transform 0.25s ease;
            flex-shrink: 0;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 1.2rem 1.5rem 1.5rem;
            font-size: 0.92rem;
            color: var(--text);
            line-height: 1.9;
            border-top: 1px solid var(--divider);
        }

        /* Footer */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
            padding: 4rem 0 2rem;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-brand h3 {
            color: var(--footer-link);
            font-size: 1.3rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 0.8rem;
        }
        .footer-brand h3 .logo-icon {
            width: 30px;
            height: 30px;
            background: var(--primary);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
        }
        .footer-brand p {
            color: var(--footer-text);
            font-size: 0.88rem;
            line-height: 1.9;
            margin: 0;
        }
        .footer-col h4 {
            color: var(--footer-link);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 0.8rem;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul a {
            color: var(--footer-text);
            font-size: 0.88rem;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-col ul a:hover,
        .footer-col ul a:focus {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 0.8rem;
            font-size: 0.78rem;
            color: var(--footer-text);
        }
        .footer-bottom a {
            color: var(--footer-link);
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-bottom a:hover,
        .footer-bottom a:focus {
            color: var(--accent);
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .header-inner {
                flex-wrap: wrap;
                min-height: auto;
                padding: 0.8rem 1rem;
            }
            .main-nav {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                gap: 1rem;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                padding: 0.4rem 0 0.2rem;
            }
            .main-nav a {
                font-size: 0.85rem;
                padding: 0.4rem 0.1rem;
                white-space: nowrap;
            }
            .progress-nav-inner {
                padding: 0.5rem 1rem;
                gap: 0.8rem;
            }
            .progress-step {
                font-size: 0.75rem;
            }
            .progress-step .step-dot {
                width: 20px;
                height: 20px;
                font-size: 0.65rem;
            }
            .editor-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .stat-card .stat-num {
                font-size: 2.2rem;
            }
            .subscribe-card {
                padding: 2rem;
                flex-direction: column;
                text-align: left;
                align-items: stretch;
            }
            .subscribe-form {
                min-width: 0;
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
        }
        @media (max-width: 639px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                align-items: flex-start;
                gap: 0.2rem;
                padding: 0.8rem 0;
                border-top: 1px solid var(--divider);
                margin-top: 0.6rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                display: block;
                width: 100%;
                padding: 0.6rem 0.2rem;
                font-size: 0.95rem;
            }
            .progress-nav {
                display: block;
                overflow-x: auto;
            }
            .progress-step {
                font-size: 0.72rem;
            }
            .page-hero {
                padding: 2.5rem 0 1.8rem;
            }
            .page-hero h1 {
                font-size: 2rem;
            }
            .page-hero .hero-desc {
                font-size: 0.9rem;
                line-height: 1.85;
            }
            .team-card {
                flex-direction: column;
                padding: 1.2rem;
            }
            .team-card .team-thumb {
                width: 100%;
                height: 180px;
                border-radius: var(--radius-sm);
            }
            .editor-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 0.8rem;
            }
            .stat-card {
                padding: 1.5rem 1rem;
            }
            .stat-card .stat-num {
                font-size: 2rem;
            }
            .subscribe-card {
                padding: 1.5rem;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form .btn-accent {
                width: 100%;
            }
            .faq-item summary {
                padding: 1rem 1.2rem;
                font-size: 0.9rem;
            }
            .faq-item .faq-answer {
                padding: 1rem 1.2rem 1.2rem;
                font-size: 0.87rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 0.4rem;
                text-align: center;
            }
            .section {
                padding: 3.5rem 0;
            }
            .section-heading h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .page-hero h1 {
                font-size: 1.7rem;
            }
            .team-card .team-info h3 {
                font-size: 1.05rem;
            }
            .btn {
                padding: 0.7rem 1.2rem;
                font-size: 0.88rem;
            }
            .tag-cloud a {
                padding: 0.35rem 0.9rem;
                font-size: 0.78rem;
            }
        }