/* roulang page: index */
:root {
            --primary: #2E6DB4;
            --primary-dark: #255A96;
            --primary-light: #4A8AD6;
            --primary-soft: #EAF1F9;
            --accent: #E8A33D;
            --accent-soft: #FDF3E3;
            --bg-main: #FFFFFF;
            --bg-alt: #F5F7FA;
            --bg-neutral: #FAFBFD;
            --border: #E8ECF1;
            --text-heading: #1A2B3C;
            --text-body: #3A4A5A;
            --text-muted: #7A8A9A;
            --text-white: #FFFFFF;
            --radius-card: 10px;
            --radius-btn: 5px;
            --radius-pill: 50px;
            --shadow-card: 0 2px 8px rgba(26, 43, 60, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(26, 43, 60, 0.12);
            --shadow-nav: 0 2px 12px rgba(26, 43, 60, 0.08);
            --transition: all 0.3s ease;
            --transition-slow: all 0.5s ease;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --section-padding: 80px 0;
            --section-padding-mobile: 48px 0;
            --container-max: 1200px;
        }

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

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

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            font-weight: 400;
            color: var(--text-body);
            background-color: var(--bg-main);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

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

        button,
        input,
        textarea,
        select {
            font-family: var(--font-stack);
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            font-weight: 600;
            line-height: 1.35;
            margin: 0 0 16px 0;
        }

        h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.25;
        }

        h2 {
            font-size: 28px;
            font-weight: 600;
        }

        h3 {
            font-size: 20px;
            font-weight: 600;
        }

        p {
            margin: 0 0 16px 0;
        }

        .grid-container {
            max-width: var(--container-max);
        }

        .section-padding {
            padding: var(--section-padding);
        }

        .section-padding-sm {
            padding: 48px 0;
        }

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

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

        .text-center {
            text-align: center;
        }

        .text-left {
            text-align: left;
        }

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

        .section-badge {
            display: inline-block;
            padding: 5px 16px;
            border-radius: var(--radius-pill);
            background-color: var(--primary-soft);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 720px;
            margin: 0 auto 32px;
        }

        .section-desc-left {
            max-width: 100%;
            margin: 0 0 32px;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: var(--bg-main);
            box-shadow: none;
            transition: var(--transition);
            border-bottom: 1px solid transparent;
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
            border-bottom: 1px solid var(--border);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 12px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

        .nav-logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }

        .nav-logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .nav-logo-text .brand-main {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
        }

        .nav-logo-text .brand-sub {
            font-size: 11px;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 1px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            padding: 6px 0;
            position: relative;
            white-space: nowrap;
            display: inline-block;
        }

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

        .nav-links li a:hover,
        .nav-links li a:focus,
        .nav-links li a.active {
            color: var(--primary);
        }

        .nav-links li a:hover::after,
        .nav-links li a:focus::after,
        .nav-links li a.active::after {
            width: 100%;
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            border: 2px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
            text-align: center;
            white-space: nowrap;
            -webkit-tap-highlight-color: transparent;
            outline: none;
        }

        .btn:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

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

        .btn-primary:hover,
        .btn-primary:focus {
            background-color: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }

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

        .btn-secondary:hover,
        .btn-secondary:focus {
            background-color: var(--primary-soft);
            border-color: var(--primary-dark);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            transform: translateY(1px);
        }

        .btn-ghost-light {
            background-color: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.5);
        }

        .btn-ghost-light:hover,
        .btn-ghost-light:focus {
            background-color: rgba(255, 255, 255, 0.25);
            border-color: #fff;
            color: #fff;
        }

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

        .btn-accent:hover,
        .btn-accent:focus {
            background-color: #d18f2c;
            border-color: #d18f2c;
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 7px 16px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }

        .text-link i {
            font-size: 12px;
            transition: var(--transition);
        }

        .text-link:hover,
        .text-link:focus {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        .text-link:hover i {
            transform: translateX(4px);
        }

        .hamburger-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--text-heading);
            font-size: 24px;
            line-height: 1;
        }

        .hamburger-toggle:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ========== Mobile Nav Drawer ========== */
        .mobile-nav-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.45);
            z-index: 199;
            display: none;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-nav-overlay.active {
            display: block;
            opacity: 1;
        }

        .mobile-nav-drawer {
            position: fixed;
            top: 0;
            right: -300px;
            width: 280px;
            height: 100%;
            background: var(--bg-main);
            z-index: 200;
            padding: 24px 20px;
            overflow-y: auto;
            transition: right 0.35s ease;
            box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
        }

        .mobile-nav-drawer.open {
            right: 0;
        }

        .mobile-nav-drawer .drawer-close {
            background: none;
            border: none;
            font-size: 22px;
            cursor: pointer;
            color: var(--text-heading);
            padding: 4px 8px;
            margin-bottom: 16px;
        }

        .mobile-nav-drawer .drawer-links {
            list-style: none;
            padding: 0;
            margin: 0 0 24px 0;
        }

        .mobile-nav-drawer .drawer-links li a {
            display: block;
            padding: 12px 4px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-body);
            border-bottom: 1px solid var(--border);
        }

        .mobile-nav-drawer .drawer-links li a:hover,
        .mobile-nav-drawer .drawer-links li a.active {
            color: var(--primary);
        }

        .mobile-nav-drawer .drawer-cta {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        /* ========== Hero ========== */
        .hero-section {
            min-height: 80vh;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 16px;
            color: #fff;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(20, 30, 45, 0.55) 0%, rgba(20, 30, 45, 0.65) 50%, rgba(20, 30, 45, 0.75) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            background-color: rgba(46, 109, 180, 0.85);
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 20px;
            color: #fff;
            backdrop-filter: blur(4px);
        }

        .hero-content h1 {
            color: #fff;
            font-size: 44px;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.25;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }

        .hero-subtitle {
            font-size: 19px;
            font-weight: 400;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 32px;
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            flex-wrap: wrap;
            color: #fff;
        }

        .hero-stat {
            text-align: center;
        }

        .hero-stat .stat-number {
            display: block;
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
        }

        .hero-stat .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            letter-spacing: 0.5px;
        }

        /* ========== Cards ========== */
        .feature-card {
            background: var(--bg-main);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            height: 100%;
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            text-align: left;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: rgba(46, 109, 180, 0.2);
        }

        .feature-card .feature-icon {
            width: 52px;
            height: 52px;
            background: var(--primary-soft);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 16px;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
        }

        .feature-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

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

        /* ========== Brand Intro ========== */
        .brand-intro-section {
            padding: var(--section-padding);
            background-color: var(--bg-main);
        }

        .brand-intro-content {
            max-width: 820px;
            margin: 0 auto;
            text-align: left;
        }

        .brand-intro-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 20px;
            text-align: center;
        }

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

        /* ========== Scenario Showcase ========== */
        .scenario-block {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 56px;
            flex-wrap: wrap;
        }

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

        .scenario-image {
            flex: 0 0 45%;
        }

        .scenario-image img {
            width: 100%;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            object-fit: cover;
            aspect-ratio: 16/10;
        }

        .scenario-text {
            flex: 1;
            min-width: 280px;
        }

        .scenario-text h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .scenario-text p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 0;
        }

        .scenario-block.reverse {
            flex-direction: row-reverse;
        }

        /* ========== Deep Content Section ========== */
        .deep-content-grid {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }

        .deep-content-main {
            flex: 2;
            min-width: 280px;
            background: var(--bg-main);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }

        .deep-content-main h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .deep-content-main p {
            font-size: 15px;
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 12px;
            text-align: justify;
        }

        .deep-content-side {
            flex: 1;
            min-width: 260px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .side-widget {
            background: var(--bg-main);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }

        .side-widget h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
        }

        .side-widget .side-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
        }

        .side-widget .side-item:last-child {
            border-bottom: none;
        }

        .side-widget .side-item .side-number {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            min-width: 36px;
            text-align: center;
        }

        .side-widget .side-item .side-text {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
        }

        .side-widget .side-item .side-text .side-label {
            font-weight: 600;
            display: block;
            color: var(--text-heading);
            font-size: 14px;
        }

        /* ========== Hot List / Boom List ========== */
        .boom-list {
            counter-reset: boom-counter;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .boom-list li {
            counter-increment: boom-counter;
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 4px;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .boom-list li:last-child {
            border-bottom: none;
        }

        .boom-list li:hover {
            background-color: var(--bg-neutral);
            border-radius: 6px;
            padding-left: 12px;
        }

        .boom-list li::before {
            content: counter(boom-counter, decimal-leading-zero);
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            min-width: 48px;
            text-align: center;
            line-height: 1;
        }

        .boom-list .boom-info {
            flex: 1;
            min-width: 0;
        }

        .boom-list .boom-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 4px;
        }

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

        .boom-list .boom-action .btn {
            font-size: 13px;
            padding: 7px 16px;
        }

        /* ========== News Section ========== */
        .news-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .news-list-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
            flex-wrap: wrap;
        }

        .news-list-item:last-child {
            border-bottom: none;
        }

        .news-list-item:hover {
            background-color: var(--bg-neutral);
            border-radius: 6px;
            padding-left: 12px;
            padding-right: 8px;
        }

        .news-date {
            flex: 0 0 100px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            padding-top: 2px;
            white-space: nowrap;
        }

        .news-body {
            flex: 1;
            min-width: 240px;
        }

        .news-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
            line-height: 1.5;
        }

        .news-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        /* ========== Social Proof ========== */
        .testimonial-card {
            background: var(--bg-main);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            height: 100%;
            transition: var(--transition);
        }

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

        .testimonial-card .quote-icon {
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 12px;
            opacity: 0.7;
        }

        .testimonial-card blockquote {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-body);
            margin: 0 0 16px;
            font-style: italic;
            border-left: none;
            padding: 0;
        }

        .testimonial-card .source-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-heading);
        }

        .testimonial-card .source-role {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ========== Screenshot Stage ========== */
        .screenshot-stage {
            background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg-main) 100%);
            border-radius: var(--radius-card);
            padding: 40px 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .screenshot-stage .stage-frame {
            max-width: 700px;
            margin: 0 auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 12px 40px rgba(26, 43, 60, 0.18);
            border: 4px solid #fff;
            position: relative;
        }

        .screenshot-stage .stage-frame img {
            width: 100%;
            object-fit: cover;
            aspect-ratio: 16/9;
        }

        .screenshot-stage .stage-caption {
            margin-top: 20px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-main);
            border: 1px solid var(--border);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(46, 109, 180, 0.25);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            background: transparent;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }

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

        .faq-question:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: -3px;
        }

        .faq-icon {
            font-size: 18px;
            color: var(--primary);
            flex-shrink: 0;
            transition: var(--transition);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-body);
            margin: 0;
        }

        /* ========== Bottom CTA ========== */
        .bottom-cta-section {
            background: linear-gradient(135deg, #EAF1F9 0%, #D5E3F2 50%, #C5D9EB 100%);
            padding: 64px 16px;
            text-align: center;
            border-radius: 0;
        }

        .bottom-cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .bottom-cta-section p {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input[type="text"],
        .cta-form input[type="email"] {
            flex: 1;
            min-width: 200px;
            padding: 12px 16px;
            border: 2px solid rgba(46, 109, 180, 0.35);
            border-radius: var(--radius-btn);
            font-size: 15px;
            background: #fff;
            color: var(--text-body);
            transition: var(--transition);
            outline: none;
            font-family: var(--font-stack);
        }

        .cta-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(46, 109, 180, 0.15);
        }

        /* ========== Floating Bottom Bar ========== */
        .floating-cta-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            width: 100%;
            background: var(--text-heading);
            color: #fff;
            z-index: 90;
            padding: 10px 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            transition: transform 0.4s ease, opacity 0.4s ease;
            box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.18);
        }

        .floating-cta-bar.hidden {
            transform: translateY(100%);
            opacity: 0;
            pointer-events: none;
        }

        .floating-cta-bar .floating-text {
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .floating-cta-bar .btn {
            min-width: 96px;
            padding: 8px 20px;
            font-size: 14px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background-color: var(--text-heading);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 80px;
            font-size: 14px;
            line-height: 1.7;
        }

        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .site-footer .footer-copyright {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
        }

        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .site-footer .footer-beian {
            color: rgba(255, 255, 255, 0.55);
            font-size: 12px;
            margin-top: 12px;
        }

        .site-footer .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin: 24px 0;
        }

        /* ========== Responsive ========== */
        @media screen and (max-width: 1024px) {
            h1 {
                font-size: 36px;
            }
            .hero-content h1 {
                font-size: 36px;
            }
            .section-padding {
                padding: 56px 0;
            }
            .scenario-block {
                gap: 28px;
            }
            .scenario-image {
                flex: 0 0 42%;
            }
        }

        @media screen and (max-width: 767px) {
            h1 {
                font-size: 28px;
            }
            h2 {
                font-size: 22px;
            }
            h3 {
                font-size: 18px;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .section-padding {
                padding: 40px 0;
            }
            .section-title {
                font-size: 22px;
            }

            .nav-links {
                display: none;
            }

            .hamburger-toggle {
                display: inline-flex;
            }

            .nav-cta-group {
                display: none;
            }

            .hero-section {
                min-height: 65vh;
                padding: 48px 16px;
            }

            .hero-stats {
                gap: 24px;
            }

            .hero-stat .stat-number {
                font-size: 24px;
            }

            .hero-cta-group {
                flex-direction: column;
                align-items: center;
                gap: 10px;
            }

            .hero-cta-group .btn {
                width: 100%;
                max-width: 300px;
            }

            .scenario-block,
            .scenario-block.reverse {
                flex-direction: column;
            }

            .scenario-image {
                flex: 0 0 100%;
            }

            .news-date {
                flex: 0 0 80px;
                font-size: 12px;
            }

            .news-body h3 {
                font-size: 15px;
            }

            .floating-cta-bar {
                flex-direction: row;
                gap: 10px;
                padding: 8px 12px;
                flex-wrap: nowrap;
            }

            .floating-cta-bar .floating-text {
                font-size: 12px;
                white-space: normal;
                line-height: 1.4;
            }

            .floating-cta-bar .btn {
                min-width: 80px;
                padding: 7px 14px;
                font-size: 13px;
                flex-shrink: 0;
            }

            .site-footer {
                padding-bottom: 100px;
            }

            .deep-content-main {
                padding: 20px;
            }

            .boom-list li {
                flex-wrap: wrap;
                gap: 8px;
            }

            .boom-list li::before {
                font-size: 20px;
                min-width: 32px;
            }

            .boom-list .boom-action {
                width: 100%;
                text-align: right;
            }
        }

        @media screen and (max-width: 520px) {
            .hero-content h1 {
                font-size: 24px;
                line-height: 1.35;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .hero-badge {
                font-size: 11px;
                padding: 4px 12px;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat .stat-number {
                font-size: 20px;
            }
            .hero-stat .stat-label {
                font-size: 11px;
            }
            .btn {
                padding: 8px 16px;
                font-size: 14px;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 15px;
            }
            .section-title {
                font-size: 20px;
            }
            .section-desc {
                font-size: 14px;
            }
            .brand-intro-content p {
                font-size: 15px;
                text-align: left;
            }
            .deep-content-main p {
                font-size: 14px;
                text-align: left;
            }
            .news-date {
                flex: 0 0 100%;
                margin-bottom: 4px;
            }
            .news-list-item {
                gap: 8px;
            }
        }

/* roulang page: category2 */
:root {
        --primary: #2E6DB4;
        --primary-dark: #255A96;
        --primary-light: #4A8AD6;
        --primary-soft: #EAF1F9;
        --accent: #E8A33D;
        --accent-soft: #FDF3E3;
        --bg-main: #FFFFFF;
        --bg-alt: #F5F7FA;
        --bg-neutral: #FAFBFD;
        --border: #E8ECF1;
        --text-heading: #1A2B3C;
        --text-body: #3A4A5A;
        --text-muted: #7A8A9A;
        --text-white: #FFFFFF;
        --radius-card: 10px;
        --radius-btn: 5px;
        --radius-pill: 50px;
        --shadow-card: 0 2px 8px rgba(26, 43, 60, 0.06);
        --shadow-card-hover: 0 8px 24px rgba(26, 43, 60, 0.12);
        --shadow-nav: 0 2px 12px rgba(26, 43, 60, 0.08);
        --transition: all 0.3s ease;
        --transition-slow: all 0.5s ease;
        --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        --section-padding: 80px 0;
        --section-padding-mobile: 48px 0;
        --container-max: 1200px;
    }
    html {
        scroll-behavior: smooth;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    body {
        font-family: var(--font-stack);
        font-size: 16px;
        line-height: 1.8;
        font-weight: 400;
        color: var(--text-body);
        background-color: var(--bg-main);
        margin: 0;
        padding: 0;
        overflow-x: hidden;
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    a {
        color: var(--primary);
        text-decoration: none;
        transition: var(--transition);
    }
    a:hover,
    a:focus {
        color: var(--primary-dark);
        text-decoration: none;
    }
    button,
    input,
    textarea,
    select {
        font-family: var(--font-stack);
    }
    .grid-container {
        max-width: var(--container-max);
    }
    .section-padding {
        padding: var(--section-padding);
    }
    .section-padding-sm {
        padding: 48px 0;
    }
    .section-bg-alt {
        background-color: var(--bg-alt);
    }
    .section-bg-neutral {
        background-color: var(--bg-neutral);
    }
    .text-center {
        text-align: center;
    }
    .text-left {
        text-align: left;
    }
    .text-muted {
        color: var(--text-muted);
    }
    .section-badge {
        display: inline-block;
        padding: 5px 16px;
        border-radius: var(--radius-pill);
        background-color: var(--primary-soft);
        color: var(--primary);
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 0.5px;
        margin-bottom: 16px;
        text-transform: uppercase;
    }
    .section-title {
        font-size: 28px;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 12px;
        line-height: 1.35;
    }
    .section-desc {
        font-size: 16px;
        color: var(--text-muted);
        line-height: 1.8;
        max-width: 720px;
        margin: 0 auto 32px;
    }
    .section-desc-left {
        max-width: 100%;
        margin: 0 0 32px;
    }
    /* ========== Header / Navigation ========== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background-color: var(--bg-main);
        box-shadow: none;
        transition: var(--transition);
        border-bottom: 1px solid transparent;
    }
    .site-header.scrolled {
        box-shadow: var(--shadow-nav);
        border-bottom: 1px solid var(--border);
    }
    .nav-wrapper {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 0;
        flex-wrap: wrap;
        gap: 12px;
    }
    .nav-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 22px;
        font-weight: 700;
        color: var(--text-heading);
        letter-spacing: 0.5px;
        white-space: nowrap;
    }
    .nav-logo:hover,
    .nav-logo:focus {
        color: var(--primary);
    }
    .nav-logo-icon {
        width: 38px;
        height: 38px;
        background: var(--primary);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 18px;
        font-weight: 700;
    }
    .nav-logo-text {
        display: flex;
        flex-direction: column;
        line-height: 1.2;
    }
    .nav-logo-text .brand-main {
        font-size: 20px;
        font-weight: 700;
        color: var(--text-heading);
    }
    .nav-logo-text .brand-sub {
        font-size: 11px;
        font-weight: 400;
        color: var(--text-muted);
        letter-spacing: 1px;
    }
    .nav-links {
        display: flex;
        align-items: center;
        gap: 24px;
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .nav-links li a {
        font-size: 15px;
        font-weight: 500;
        color: var(--text-body);
        padding: 6px 0;
        position: relative;
        white-space: nowrap;
        display: inline-block;
    }
    .nav-links li a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2px;
        background-color: var(--primary);
        transition: var(--transition);
        border-radius: 2px;
    }
    .nav-links li a:hover::after,
    .nav-links li a:focus::after,
    .nav-links li a.active::after {
        width: 100%;
    }
    .nav-links li a.active {
        color: var(--primary);
        font-weight: 600;
    }
    .nav-cta-group {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 20px;
        border-radius: var(--radius-btn);
        font-size: 15px;
        font-weight: 600;
        line-height: 1.4;
        cursor: pointer;
        border: none;
        transition: var(--transition);
        text-align: center;
        white-space: nowrap;
    }
    .btn-primary {
        background-color: var(--primary);
        color: var(--text-white);
        border: 2px solid var(--primary);
    }
    .btn-primary:hover,
    .btn-primary:focus {
        background-color: var(--primary-dark);
        border-color: var(--primary-dark);
        color: #fff;
        box-shadow: 0 4px 12px rgba(46, 109, 180, 0.25);
        transform: translateY(-1px);
    }
    .btn-secondary {
        background-color: transparent;
        color: var(--primary);
        border: 2px solid var(--primary);
    }
    .btn-secondary:hover,
    .btn-secondary:focus {
        background-color: var(--primary-soft);
        border-color: var(--primary);
        color: var(--primary-dark);
        transform: translateY(-1px);
    }
    .btn-sm {
        padding: 8px 16px;
        font-size: 14px;
    }
    .btn-lg {
        padding: 14px 28px;
        font-size: 16px;
    }
    .nav-toggle {
        display: none;
        background: none;
        border: none;
        font-size: 24px;
        color: var(--text-heading);
        cursor: pointer;
        padding: 6px;
    }
    /* ========== Page Header ========== */
    .page-header {
        padding: 64px 0 48px;
        background-color: var(--bg-neutral);
        border-bottom: 1px solid var(--border);
        position: relative;
        overflow: hidden;
    }
    .page-header::before {
        content: '';
        position: absolute;
        top: -40px;
        right: -40px;
        width: 180px;
        height: 180px;
        background-color: var(--primary-soft);
        border-radius: 50%;
        opacity: 0.6;
        z-index: 0;
    }
    .page-header .grid-container {
        position: relative;
        z-index: 1;
    }
    .page-header h1 {
        font-size: 36px;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 12px;
        line-height: 1.3;
    }
    .page-header .breadcrumb {
        font-size: 14px;
        color: var(--text-muted);
        margin-bottom: 16px;
    }
    .page-header .breadcrumb a {
        color: var(--text-muted);
    }
    .page-header .breadcrumb a:hover {
        color: var(--primary);
    }
    .page-header .breadcrumb .separator {
        margin: 0 8px;
    }
    .page-header .page-intro {
        font-size: 16px;
        color: var(--text-body);
        line-height: 1.8;
        max-width: 800px;
    }
    /* ========== Feature Strip ========== */
    .feature-strip {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        margin-top: 24px;
    }
    .feature-strip-item {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 14px;
        color: var(--text-body);
        background: var(--bg-main);
        padding: 10px 16px;
        border-radius: var(--radius-pill);
        border: 1px solid var(--border);
    }
    .feature-strip-item i {
        color: var(--primary);
        font-size: 16px;
    }
    /* ========== Content Grid ========== */
    .content-grid-section {
        padding: 56px 0 64px;
    }
    .content-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        margin-bottom: 32px;
    }
    .content-card {
        background: var(--bg-main);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-card);
        transition: var(--transition);
        display: flex;
        flex-direction: column;
    }
    .content-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-4px);
        border-color: rgba(46, 109, 180, 0.25);
    }
    .content-card .card-cover {
        position: relative;
        height: 180px;
        overflow: hidden;
        background-color: #eef2f7;
    }
    .content-card .card-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: var(--transition-slow);
    }
    .content-card:hover .card-cover img {
        transform: scale(1.05);
    }
    .content-card .card-cover .card-tag {
        position: absolute;
        top: 12px;
        left: 12px;
        background: rgba(26, 43, 60, 0.75);
        color: #fff;
        padding: 4px 12px;
        border-radius: var(--radius-pill);
        font-size: 12px;
        font-weight: 500;
        backdrop-filter: blur(4px);
    }
    .content-card .card-body {
        padding: 20px 22px 22px;
        display: flex;
        flex-direction: column;
        flex: 1;
    }
    .content-card .card-date {
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 8px;
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .content-card .card-title {
        font-size: 17px;
        font-weight: 600;
        color: var(--text-heading);
        margin-bottom: 10px;
        line-height: 1.45;
        transition: var(--transition);
    }
    .content-card:hover .card-title {
        color: var(--primary);
    }
    .content-card .card-excerpt {
        font-size: 14px;
        color: var(--text-body);
        line-height: 1.7;
        margin-bottom: 16px;
        flex: 1;
    }
    .content-card .card-link {
        font-size: 14px;
        font-weight: 600;
        color: var(--primary);
        display: inline-flex;
        align-items: center;
        gap: 6px;
        transition: var(--transition);
    }
    .content-card .card-link i {
        transition: var(--transition);
    }
    .content-card .card-link:hover {
        color: var(--primary-dark);
        gap: 10px;
    }
    /* ========== Sidebar ========== */
    .sidebar {
        position: sticky;
        top: 100px;
    }
    .sidebar-widget {
        background: var(--bg-main);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 22px;
        margin-bottom: 24px;
        box-shadow: var(--shadow-card);
    }
    .sidebar-widget .widget-title {
        font-size: 17px;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 16px;
        padding-bottom: 10px;
        border-bottom: 2px solid var(--primary-soft);
    }
    .sidebar-widget .tag-list {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    .sidebar-widget .tag-item {
        display: inline-block;
        padding: 6px 14px;
        background: var(--bg-alt);
        border-radius: var(--radius-pill);
        font-size: 13px;
        color: var(--text-body);
        border: 1px solid var(--border);
        transition: var(--transition);
    }
    .sidebar-widget .tag-item:hover {
        background: var(--primary-soft);
        color: var(--primary);
        border-color: var(--primary);
    }
    .sidebar-widget .widget-list {
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .sidebar-widget .widget-list li {
        padding: 10px 0;
        border-bottom: 1px solid var(--border);
        font-size: 14px;
    }
    .sidebar-widget .widget-list li:last-child {
        border-bottom: none;
    }
    .sidebar-widget .widget-list li a {
        color: var(--text-body);
        display: flex;
        align-items: center;
        gap: 8px;
        transition: var(--transition);
    }
    .sidebar-widget .widget-list li a:hover {
        color: var(--primary);
        padding-left: 4px;
    }
    .sidebar-widget .widget-list li a i {
        font-size: 12px;
        color: var(--text-muted);
    }
    /* ========== Pagination ========== */
    .pagination-section {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        margin-bottom: 40px;
    }
    .pagination-btn {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        padding: 8px 16px;
        border: 1px solid var(--border);
        border-radius: var(--radius-btn);
        font-size: 14px;
        color: var(--text-body);
        background: var(--bg-main);
        cursor: pointer;
        transition: var(--transition);
    }
    .pagination-btn:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: var(--primary-soft);
    }
    .pagination-btn.active {
        background: var(--primary);
        color: #fff;
        border-color: var(--primary);
    }
    .pagination-btn.disabled {
        opacity: 0.5;
        cursor: not-allowed;
        pointer-events: none;
    }
    /* ========== CTA Section ========== */
    .cta-section {
        padding: 64px 0;
        background: linear-gradient(135deg, #f0f6fd 0%, #e8f1fa 50%, #f5f8fc 100%);
        border-radius: 0;
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        top: -60px;
        left: -60px;
        width: 220px;
        height: 220px;
        background: rgba(46, 109, 180, 0.08);
        border-radius: 50%;
    }
    .cta-section::after {
        content: '';
        position: absolute;
        bottom: -40px;
        right: -40px;
        width: 160px;
        height: 160px;
        background: rgba(232, 163, 61, 0.08);
        border-radius: 50%;
    }
    .cta-section .grid-container {
        position: relative;
        z-index: 1;
        text-align: center;
    }
    .cta-section h2 {
        font-size: 28px;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 12px;
    }
    .cta-section p {
        font-size: 16px;
        color: var(--text-body);
        max-width: 620px;
        margin: 0 auto 24px;
    }
    .cta-section .btn {
        margin: 0 auto;
    }
    /* ========== Bottom Fixed Bar ========== */
    .bottom-fixed-bar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        background: var(--text-heading);
        z-index: 90;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 10px 24px;
        gap: 16px;
        transition: transform 0.4s ease, opacity 0.4s ease;
        box-shadow: 0 -4px 20px rgba(26, 43, 60, 0.15);
    }
    .bottom-fixed-bar.hidden-bar {
        transform: translateY(100%);
        opacity: 0;
        pointer-events: none;
    }
    .bottom-fixed-bar .bfb-text {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.9);
        font-weight: 500;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .bottom-fixed-bar .btn {
        flex-shrink: 0;
        min-width: 96px;
    }
    .bottom-fixed-bar .btn-primary {
        background: #fff;
        color: var(--text-heading);
        border-color: #fff;
    }
    .bottom-fixed-bar .btn-primary:hover {
        background: var(--accent);
        border-color: var(--accent);
        color: #fff;
    }
    /* ========== Footer ========== */
    .site-footer {
        background: #1A2B3C;
        padding: 48px 0 40px;
        color: rgba(255, 255, 255, 0.8);
        margin-bottom: 56px;
    }
    .footer-brand {
        font-size: 22px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 8px;
    }
    .footer-copyright {
        font-size: 13px;
        color: rgba(255, 255, 255, 0.6);
        margin-bottom: 4px;
    }
    .footer-links {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
    }
    .footer-links li a {
        color: rgba(255, 255, 255, 0.7);
        font-size: 13px;
        transition: var(--transition);
    }
    .footer-links li a:hover {
        color: #fff;
    }
    .footer-divider {
        border-top: 1px solid rgba(255, 255, 255, 0.12);
        margin: 20px 0 12px;
    }
    /* ========== Responsive ========== */
    @media (max-width: 1024px) {
        .content-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .page-header h1 {
            font-size: 30px;
        }
    }
    @media (max-width: 768px) {
        .nav-wrapper {
            flex-wrap: nowrap;
        }
        .nav-links {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--bg-main);
            flex-direction: column;
            align-items: stretch;
            padding: 16px 24px;
            gap: 4px;
            box-shadow: var(--shadow-nav);
            border-bottom: 1px solid var(--border);
            z-index: 99;
        }
        .nav-links.open {
            display: flex;
        }
        .nav-links li a {
            display: block;
            padding: 10px 0;
            font-size: 16px;
        }
        .nav-cta-group {
            gap: 6px;
        }
        .nav-cta-group .btn {
            padding: 8px 12px;
            font-size: 13px;
            white-space: nowrap;
        }
        .nav-cta-group .btn-secondary {
            display: none;
        }
        .nav-toggle {
            display: block;
        }
        .content-grid {
            grid-template-columns: 1fr;
            gap: 18px;
        }
        .page-header {
            padding: 40px 0 32px;
        }
        .page-header h1 {
            font-size: 26px;
        }
        .content-grid-section {
            padding: 40px 0 48px;
        }
        .cta-section {
            padding: 48px 0;
        }
        .cta-section h2 {
            font-size: 24px;
        }
        .bottom-fixed-bar {
            padding: 8px 16px;
        }
        .bottom-fixed-bar .bfb-text {
            font-size: 13px;
        }
        .site-footer {
            padding: 32px 0 32px;
            margin-bottom: 56px;
        }
    }
    @media (max-width: 520px) {
        .nav-logo {
            font-size: 18px;
        }
        .nav-logo-icon {
            width: 32px;
            height: 32px;
            font-size: 15px;
        }
        .nav-logo-text .brand-main {
            font-size: 17px;
        }
        .nav-logo-text .brand-sub {
            font-size: 10px;
        }
        .nav-cta-group .btn {
            padding: 7px 10px;
            font-size: 12px;
        }
        .page-header h1 {
            font-size: 22px;
        }
        .content-card .card-cover {
            height: 150px;
        }
        .content-card .card-body {
            padding: 16px 18px 18px;
        }
        .content-card .card-title {
            font-size: 15px;
        }
        .content-card .card-excerpt {
            font-size: 13px;
        }
        .cta-section h2 {
            font-size: 20px;
        }
        .cta-section p {
            font-size: 14px;
        }
        .section-title {
            font-size: 22px;
        }
    }

/* roulang page: category1 */
:root {
            --primary: #2E6DB4;
            --primary-dark: #255A96;
            --primary-light: #4A8AD6;
            --primary-soft: #EAF1F9;
            --accent: #E8A33D;
            --accent-soft: #FDF3E3;
            --bg-main: #FFFFFF;
            --bg-alt: #F5F7FA;
            --bg-neutral: #FAFBFD;
            --border: #E8ECF1;
            --text-heading: #1A2B3C;
            --text-body: #3A4A5A;
            --text-muted: #7A8A9A;
            --text-white: #FFFFFF;
            --radius-card: 10px;
            --radius-btn: 5px;
            --radius-pill: 50px;
            --shadow-card: 0 2px 8px rgba(26, 43, 60, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(26, 43, 60, 0.12);
            --shadow-nav: 0 2px 12px rgba(26, 43, 60, 0.08);
            --transition: all 0.3s ease;
            --transition-slow: all 0.5s ease;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --section-padding: 72px 0;
            --section-padding-mobile: 44px 0;
            --container-max: 1200px;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            font-weight: 400;
            color: var(--text-body);
            background-color: var(--bg-main);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: none;
            outline: none;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        button,
        input,
        textarea,
        select {
            font-family: var(--font-stack);
        }
        button {
            cursor: pointer;
        }
        .grid-container {
            max-width: var(--container-max);
            padding-left: 16px;
            padding-right: 16px;
        }
        .section-padding {
            padding: var(--section-padding);
        }
        .section-padding-sm {
            padding: 44px 0;
        }
        .section-bg-alt {
            background-color: var(--bg-alt);
        }
        .section-bg-neutral {
            background-color: var(--bg-neutral);
        }
        .text-center {
            text-align: center;
        }
        .text-left {
            text-align: left;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .section-badge {
            display: inline-block;
            padding: 5px 16px;
            border-radius: var(--radius-pill);
            background-color: var(--primary-soft);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
            line-height: 1.35;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 760px;
            margin: 0 auto 28px;
        }
        /* ========== Header / Navigation ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: var(--bg-main);
            box-shadow: none;
            transition: var(--transition);
            border-bottom: 1px solid transparent;
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
            border-bottom: 1px solid var(--border);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 10px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .nav-logo:hover,
        .nav-logo:focus {
            color: var(--primary);
        }
        .nav-logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .nav-logo-text .brand-main {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
        }
        .nav-logo-text .brand-sub {
            font-size: 11px;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 1px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 20px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            padding: 6px 0;
            position: relative;
            white-space: nowrap;
            display: inline-block;
        }
        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: var(--transition);
        }
        .nav-links li a:hover::after,
        .nav-links li a:focus::after {
            width: 100%;
        }
        .nav-links li a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links li a.active::after {
            width: 100%;
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            padding: 10px 22px;
            transition: var(--transition);
            border: none;
            white-space: nowrap;
            line-height: 1.5;
        }
        .btn:hover,
        .btn:focus {
            text-decoration: none;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--text-white);
            border: 1px solid var(--primary);
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: var(--text-white);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(46, 109, 180, 0.25);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary-soft);
            border-color: var(--primary);
            color: var(--primary-dark);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }
        .btn-accent {
            background: var(--accent);
            color: var(--text-white);
            border: 1px solid var(--accent);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: #d6952f;
            border-color: #d6952f;
            color: var(--text-white);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(232, 163, 61, 0.3);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            font-size: 20px;
            color: var(--text-heading);
            padding: 6px 12px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }
        @media (max-width: 1023px) {
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 10px 0;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                display: block;
                padding: 10px 4px;
                border-bottom: 1px solid var(--border);
            }
            .nav-links li a::after {
                display: none;
            }
            .nav-cta-group {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 8px;
                padding: 10px 0;
            }
            .nav-cta-group.open {
                display: flex;
            }
            .nav-cta-group .btn {
                width: 100%;
            }
        }
        /* ========== Category Hero ========== */
        .category-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: 72px 0;
            color: var(--text-white);
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(20, 30, 45, 0.6);
        }
        .category-hero .grid-container {
            position: relative;
            z-index: 1;
        }
        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            line-height: 1.25;
        }
        .category-hero .category-intro {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            max-width: 760px;
            margin-bottom: 20px;
        }
        .category-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 14px;
        }
        .category-hero .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        /* ========== Content Grid ========== */
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
            align-items: start;
        }
        .news-card {
            background: var(--bg-main);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .news-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .news-card .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
            background-color: var(--bg-alt);
        }
        .news-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .card-date {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .news-card .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
            line-height: 1.45;
            transition: var(--transition);
        }
        .news-card:hover .card-title {
            color: var(--primary);
        }
        .news-card .card-summary {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
        }
        .news-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-card .card-link::after {
            content: '';
            width: 18px;
            height: 1px;
            background: var(--primary);
            transition: var(--transition);
        }
        .news-card .card-link:hover::after {
            width: 26px;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        /* ========== Sidebar ========== */
        .sidebar-widget {
            background: var(--bg-main);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            margin-bottom: 20px;
            box-shadow: var(--shadow-card);
        }
        .sidebar-widget .widget-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-soft);
        }
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .tag-list li a {
            display: inline-block;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            transition: var(--transition);
        }
        .tag-list li a:hover,
        .tag-list li a:focus {
            background: var(--primary);
            color: var(--text-white);
        }
        .sidebar-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            line-height: 1.6;
        }
        .sidebar-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .sidebar-list li a {
            color: var(--text-body);
            font-weight: 500;
            display: block;
        }
        .sidebar-list li a:hover,
        .sidebar-list li a:focus {
            color: var(--primary);
        }
        .sidebar-list li .side-date {
            font-size: 12px;
            color: var(--text-muted);
            display: block;
            margin-top: 2px;
        }
        /* ========== Pagination ========== */
        .pagination-wrapper {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 28px;
            flex-wrap: wrap;
        }
        .pagination-wrapper .page-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 36px;
            height: 36px;
            padding: 0 10px;
            border-radius: var(--radius-btn);
            background: var(--bg-main);
            border: 1px solid var(--border);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }
        .pagination-wrapper .page-link:hover,
        .pagination-wrapper .page-link:focus {
            border-color: var(--primary);
            color: var(--primary);
        }
        .pagination-wrapper .page-link.active {
            background: var(--primary);
            border-color: var(--primary);
            color: var(--text-white);
        }
        .pagination-wrapper .page-link.disabled {
            opacity: 0.5;
            pointer-events: none;
        }
        /* ========== CTA Section ========== */
        .cta-section {
            background: linear-gradient(135deg, #2E6DB4 0%, #255A96 100%);
            border-radius: var(--radius-card);
            padding: 44px 32px;
            color: var(--text-white);
            text-align: center;
            margin-top: 40px;
        }
        .cta-section h2 {
            color: var(--text-white);
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.35;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 15px;
            margin-bottom: 20px;
        }
        .cta-section .btn {
            background: var(--text-white);
            color: var(--primary);
            border: 1px solid var(--text-white);
            font-weight: 700;
            padding: 12px 30px;
            font-size: 15px;
        }
        .cta-section .btn:hover,
        .cta-section .btn:focus {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
        }
        /* ========== Footer ========== */
        .site-footer {
            background: #1A2B3C;
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 32px;
            margin-top: 40px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
            letter-spacing: 0.5px;
        }
        .footer-copyright {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            margin-bottom: 6px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-links li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 13px;
            transition: var(--transition);
        }
        .footer-links li a:hover,
        .footer-links li a:focus {
            color: var(--text-white);
        }
        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            margin: 16px 0;
            padding-top: 8px;
        }
        /* ========== Fixed Bottom Bar ========== */
        .fixed-bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: var(--text-heading);
            color: var(--text-white);
            z-index: 90;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            gap: 12px;
            box-shadow: 0 -2px 12px rgba(26, 43, 60, 0.15);
            transition: transform 0.4s ease;
            transform: translateY(0);
        }
        .fixed-bottom-bar.hidden {
            transform: translateY(100%);
        }
        .fixed-bottom-bar .bar-text {
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
        }
        .fixed-bottom-bar .btn {
            background: var(--accent);
            color: var(--text-white);
            border: 1px solid var(--accent);
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            min-width: 96px;
        }
        .fixed-bottom-bar .btn:hover,
        .fixed-bottom-bar .btn:focus {
            background: #d6952f;
            border-color: #d6952f;
            color: var(--text-white);
            transform: translateY(-1px);
        }
        .fixed-bottom-bar .bar-close {
            background: none;
            border: none;
            color: rgba(255, 255, 255, 0.6);
            font-size: 16px;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: var(--transition);
            padding: 0;
            flex-shrink: 0;
        }
        .fixed-bottom-bar .bar-close:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }
        /* ========== Responsive ========== */
        @media (max-width: 1023px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .category-hero {
                padding: 56px 0;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .fixed-bottom-bar {
                padding: 10px 14px;
            }
            .fixed-bottom-bar .bar-text {
                font-size: 13px;
            }
            .fixed-bottom-bar .btn {
                min-width: 88px;
                padding: 8px 14px;
                font-size: 13px;
            }
        }
        @media (max-width: 640px) {
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero .category-intro {
                font-size: 14px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h2 {
                font-size: 20px;
            }
            .cta-section p {
                font-size: 14px;
            }
            .fixed-bottom-bar {
                padding: 8px 10px;
                flex-wrap: nowrap;
                gap: 6px;
            }
            .fixed-bottom-bar .bar-text {
                font-size: 12px;
                flex: 1;
            }
            .fixed-bottom-bar .btn {
                min-width: 72px;
                padding: 7px 10px;
                font-size: 12px;
            }
            .fixed-bottom-bar .bar-close {
                width: 24px;
                height: 24px;
                font-size: 14px;
            }
            .nav-wrapper {
                padding: 10px 0;
            }
            .nav-logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .nav-logo-text .brand-main {
                font-size: 17px;
            }
            .nav-logo-text .brand-sub {
                font-size: 10px;
            }
        }

/* roulang page: category3 */
:root {
        --primary: #2E6DB4;
        --primary-dark: #255A96;
        --primary-light: #4A8AD6;
        --primary-soft: #EAF1F9;
        --accent: #E8A33D;
        --accent-soft: #FDF3E3;
        --bg-main: #FFFFFF;
        --bg-alt: #F5F7FA;
        --bg-neutral: #FAFBFD;
        --border: #E8ECF1;
        --text-heading: #1A2B3C;
        --text-body: #3A4A5A;
        --text-muted: #7A8A9A;
        --text-white: #FFFFFF;
        --radius-card: 10px;
        --radius-btn: 5px;
        --radius-pill: 50px;
        --shadow-card: 0 2px 8px rgba(26, 43, 60, 0.06);
        --shadow-card-hover: 0 8px 24px rgba(26, 43, 60, 0.12);
        --shadow-nav: 0 2px 12px rgba(26, 43, 60, 0.08);
        --transition: all 0.3s ease;
        --transition-slow: all 0.5s ease;
        --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        --section-padding: 80px 0;
        --section-padding-mobile: 48px 0;
        --container-max: 1200px;
    }

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

    body {
        font-family: var(--font-stack);
        font-size: 16px;
        line-height: 1.8;
        font-weight: 400;
        color: var(--text-body);
        background-color: var(--bg-main);
        margin: 0;
        padding: 0;
        overflow-x: hidden;
    }

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

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

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

    button,
    input,
    textarea,
    select {
        font-family: var(--font-stack);
    }

    .grid-container {
        max-width: var(--container-max);
    }

    .section-padding {
        padding: var(--section-padding);
    }

    .section-padding-sm {
        padding: 48px 0;
    }

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

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

    .text-center {
        text-align: center;
    }

    .text-left {
        text-align: left;
    }

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

    .section-badge {
        display: inline-block;
        padding: 5px 16px;
        border-radius: var(--radius-pill);
        background-color: var(--primary-soft);
        color: var(--primary);
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 0.5px;
        margin-bottom: 16px;
        text-transform: uppercase;
    }

    .section-title {
        font-size: 28px;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 12px;
        line-height: 1.35;
    }

    .section-desc {
        font-size: 16px;
        color: var(--text-muted);
        line-height: 1.8;
        max-width: 720px;
        margin: 0 auto 32px;
    }

    .section-desc-left {
        max-width: 100%;
        margin: 0 0 32px;
    }

    /* ========== Header / Navigation ========== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background-color: var(--bg-main);
        box-shadow: none;
        transition: var(--transition);
        border-bottom: 1px solid transparent;
    }

    .site-header.scrolled {
        box-shadow: var(--shadow-nav);
        border-bottom: 1px solid var(--border);
    }

    .nav-wrapper {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 14px 0;
        flex-wrap: wrap;
        gap: 12px;
    }

    .nav-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 22px;
        font-weight: 700;
        color: var(--text-heading);
        letter-spacing: 0.5px;
        white-space: nowrap;
    }

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

    .nav-logo-icon {
        width: 38px;
        height: 38px;
        background: var(--primary);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 18px;
        font-weight: 700;
    }

    .nav-logo-text {
        display: flex;
        flex-direction: column;
        line-height: 1.2;
    }

    .nav-logo-text .brand-main {
        font-size: 20px;
        font-weight: 700;
        color: var(--text-heading);
    }

    .nav-logo-text .brand-sub {
        font-size: 11px;
        font-weight: 400;
        color: var(--text-muted);
        letter-spacing: 1px;
    }

    .nav-links {
        display: flex;
        align-items: center;
        gap: 24px;
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .nav-links li a {
        font-size: 15px;
        font-weight: 500;
        color: var(--text-body);
        padding: 6px 0;
        position: relative;
        white-space: nowrap;
        display: inline-block;
    }

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

    .nav-links li a:hover::after,
    .nav-links li a:focus::after,
    .nav-links li a.active::after {
        width: 100%;
    }

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

    .nav-cta-group {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 9px 20px;
        border-radius: var(--radius-btn);
        font-size: 15px;
        font-weight: 600;
        cursor: pointer;
        border: none;
        transition: var(--transition);
        white-space: nowrap;
        line-height: 1.4;
    }

    .btn-primary {
        background-color: var(--primary);
        color: var(--text-white);
    }

    .btn-primary:hover,
    .btn-primary:focus {
        background-color: var(--primary-dark);
        color: var(--text-white);
        transform: translateY(-1px);
    }

    .btn-secondary {
        background-color: transparent;
        color: var(--primary);
        border: 1.5px solid var(--primary);
    }

    .btn-secondary:hover,
    .btn-secondary:focus {
        background-color: var(--primary-soft);
        color: var(--primary-dark);
    }

    .btn-sm {
        padding: 7px 16px;
        font-size: 14px;
    }

    .btn-lg {
        padding: 13px 28px;
        font-size: 16px;
    }

    .btn-text {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: none;
        border: none;
        color: var(--primary);
        font-size: 15px;
        font-weight: 600;
        cursor: pointer;
        padding: 0;
        transition: var(--transition);
        text-decoration: underline;
        text-underline-offset: 4px;
        text-decoration-color: rgba(46, 109, 180, 0.3);
    }

    .btn-text:hover,
    .btn-text:focus {
        color: var(--primary-dark);
        text-decoration-color: var(--primary-dark);
    }

    .hamburger {
        display: none;
        flex-direction: column;
        cursor: pointer;
        gap: 5px;
        background: none;
        border: none;
        padding: 8px 4px;
    }

    .hamburger span {
        display: block;
        width: 24px;
        height: 2px;
        background-color: var(--text-heading);
        border-radius: 2px;
        transition: var(--transition);
        transform-origin: center;
    }

    .hamburger.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

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

    .hamburger.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    /* ========== Mobile Nav ========== */
    .mobile-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-main);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-nav);
        padding: 16px 20px;
        z-index: 99;
    }

    .mobile-nav.open {
        display: block;
    }

    .mobile-nav ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .mobile-nav ul li a {
        display: block;
        padding: 12px 0;
        font-size: 16px;
        font-weight: 500;
        color: var(--text-body);
        border-bottom: 1px solid var(--border);
    }

    .mobile-nav ul li a.active {
        color: var(--primary);
        font-weight: 600;
    }

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

    /* ========== Hero / Category Header ========== */
    .category-hero {
        position: relative;
        min-height: 420px;
        display: flex;
        align-items: center;
        background-image: url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        padding: 72px 0 56px;
    }

    .category-hero-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(to bottom, rgba(20, 30, 45, 0.75) 0%, rgba(20, 30, 45, 0.55) 100%);
    }

    .category-hero-content {
        position: relative;
        z-index: 2;
        max-width: 800px;
    }

    .category-hero h1 {
        font-size: 38px;
        font-weight: 700;
        color: var(--text-white);
        margin-bottom: 16px;
        line-height: 1.25;
    }

    .category-hero .category-hero-desc {
        font-size: 17px;
        color: rgba(255, 255, 255, 0.85);
        line-height: 1.8;
        margin-bottom: 24px;
    }

    .category-hero .hero-badge {
        display: inline-block;
        padding: 5px 16px;
        border-radius: var(--radius-pill);
        background-color: rgba(232, 163, 61, 0.9);
        color: #1A2B3C;
        font-size: 13px;
        font-weight: 600;
        margin-bottom: 16px;
    }

    /* ========== Card Grid ========== */
    .card-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }

    .content-card {
        background: var(--bg-main);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        overflow: hidden;
        transition: var(--transition);
        display: flex;
        flex-direction: column;
        height: 100%;
        border: 1px solid var(--border);
    }

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

    .content-card-image {
        width: 100%;
        aspect-ratio: 16/9;
        object-fit: cover;
        background-color: var(--bg-alt);
    }

    .content-card-body {
        padding: 20px 22px 24px;
        display: flex;
        flex-direction: column;
        flex-grow: 1;
    }

    .content-card-date {
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 8px;
        display: flex;
        align-items: center;
        gap: 6px;
    }

    .content-card-title {
        font-size: 18px;
        font-weight: 600;
        color: var(--text-heading);
        margin-bottom: 10px;
        line-height: 1.4;
        transition: var(--transition);
    }

    .content-card:hover .content-card-title {
        color: var(--primary);
    }

    .content-card-desc {
        font-size: 14px;
        color: var(--text-body);
        line-height: 1.7;
        flex-grow: 1;
        margin-bottom: 16px;
    }

    .content-card .btn-text {
        align-self: flex-start;
        margin-top: auto;
    }

    /* ========== Feature Module ========== */
    .feature-module {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 40px;
        align-items: center;
    }

    .feature-module.reverse {
        direction: rtl;
    }

    .feature-module.reverse > * {
        direction: ltr;
    }

    .feature-image {
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-card);
    }

    .feature-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        aspect-ratio: 4/3;
    }

    .feature-content h2 {
        font-size: 26px;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 16px;
        line-height: 1.35;
    }

    .feature-content p {
        font-size: 16px;
        color: var(--text-body);
        line-height: 1.8;
        margin-bottom: 16px;
    }

    .feature-list {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .feature-list li {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        padding: 10px 0;
        font-size: 15px;
        color: var(--text-body);
        border-bottom: 1px solid var(--border);
    }

    .feature-list li:last-child {
        border-bottom: none;
    }

    .feature-list li i {
        color: var(--primary);
        font-size: 18px;
        margin-top: 3px;
        flex-shrink: 0;
    }

    /* ========== Steps / Process ========== */
    .steps-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
        counter-reset: step;
    }

    .step-item {
        background: var(--bg-main);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        padding: 28px 24px;
        text-align: center;
        border: 1px solid var(--border);
        transition: var(--transition);
        position: relative;
    }

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

    .step-number {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 42px;
        height: 42px;
        background: var(--primary);
        color: var(--text-white);
        border-radius: 50%;
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 14px;
    }

    .step-item h3 {
        font-size: 17px;
        font-weight: 600;
        color: var(--text-heading);
        margin-bottom: 8px;
    }

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

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

    .faq-item {
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        margin-bottom: 12px;
        background: var(--bg-main);
        overflow: hidden;
        transition: var(--transition);
    }

    .faq-question {
        width: 100%;
        background: none;
        border: none;
        padding: 18px 24px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        cursor: pointer;
        font-size: 16px;
        font-weight: 600;
        color: var(--text-heading);
        text-align: left;
        gap: 16px;
    }

    .faq-icon {
        width: 28px;
        height: 28px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--primary-soft);
        border-radius: 50%;
        color: var(--primary);
        font-size: 16px;
        font-weight: 700;
        flex-shrink: 0;
        transition: var(--transition);
    }

    .faq-item.open .faq-icon {
        background: var(--primary);
        color: var(--text-white);
        transform: rotate(45deg);
    }

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.3s ease;
        padding: 0 24px;
    }

    .faq-item.open .faq-answer {
        max-height: 400px;
        padding: 0 24px 20px;
    }

    .faq-answer p {
        font-size: 15px;
        color: var(--text-body);
        line-height: 1.8;
        margin: 0;
    }

    /* ========== CTA ========== */
    .cta-section {
        background: linear-gradient(135deg, var(--primary-soft) 0%, #DDE9F5 100%);
        border-radius: var(--radius-card);
        padding: 48px 40px;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    .cta-section h2 {
        font-size: 28px;
        font-weight: 700;
        color: var(--text-heading);
        margin-bottom: 12px;
        line-height: 1.35;
    }

    .cta-section p {
        font-size: 16px;
        color: var(--text-body);
        margin-bottom: 24px;
        line-height: 1.8;
    }

    /* ========== Pagination ========== */
    .pagination {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        margin-top: 32px;
        flex-wrap: wrap;
    }

    .pagination .page-link {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-width: 38px;
        height: 38px;
        padding: 0 12px;
        border-radius: var(--radius-btn);
        border: 1px solid var(--border);
        background: var(--bg-main);
        color: var(--text-body);
        font-size: 14px;
        font-weight: 500;
        cursor: pointer;
        transition: var(--transition);
    }

    .pagination .page-link:hover,
    .pagination .page-link:focus {
        border-color: var(--primary);
        color: var(--primary);
    }

    .pagination .page-link.active {
        background: var(--primary);
        border-color: var(--primary);
        color: var(--text-white);
    }

    /* ========== Footer ========== */
    .site-footer {
        background-color: #1A2B3C;
        color: rgba(255, 255, 255, 0.85);
        padding: 48px 0 0;
    }

    .footer-brand {
        font-size: 22px;
        font-weight: 700;
        color: var(--text-white);
        margin-bottom: 8px;
    }

    .footer-copyright {
        font-size: 13px;
        color: rgba(255, 255, 255, 0.6);
        margin-bottom: 6px;
    }

    .footer-links {
        list-style: none;
        margin: 0;
        padding: 0;
        display: flex;
        gap: 16px;
        flex-wrap: wrap;
    }

    .footer-links li a {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.7);
        transition: var(--transition);
    }

    .footer-links li a:hover,
    .footer-links li a:focus {
        color: var(--text-white);
    }

    .footer-divider {
        height: 1px;
        background: rgba(255, 255, 255, 0.15);
        margin: 24px 0 16px;
    }

    /* ========== Bottom Fixed CTA Bar ========== */
    .bottom-cta-bar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: var(--text-heading);
        color: var(--text-white);
        padding: 12px 20px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        z-index: 95;
        transition: transform 0.4s ease, opacity 0.4s ease;
        box-shadow: 0 -4px 16px rgba(26, 43, 60, 0.2);
    }

    .bottom-cta-bar.hidden {
        transform: translateY(100%);
        opacity: 0;
        pointer-events: none;
    }

    .bottom-cta-text {
        font-size: 14px;
        font-weight: 500;
        line-height: 1.4;
    }

    /* ========== Responsive ========== */
    @media (max-width: 1024px) {
        .card-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .steps-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .feature-module {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .feature-module.reverse {
            direction: ltr;
        }
        .category-hero h1 {
            font-size: 32px;
        }
    }

    @media (max-width: 768px) {
        :root {
            --section-padding: 48px 0;
        }
        .nav-links {
            display: none;
        }
        .nav-cta-group {
            display: none;
        }
        .hamburger {
            display: flex;
        }
        .card-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .category-hero {
            min-height: 320px;
            padding: 56px 0 40px;
        }
        .category-hero h1 {
            font-size: 28px;
        }
        .section-title {
            font-size: 24px;
        }
        .cta-section {
            padding: 36px 24px;
        }
        .cta-section h2 {
            font-size: 24px;
        }
    }

    @media (max-width: 520px) {
        .card-grid {
            grid-template-columns: 1fr;
        }
        .steps-grid {
            grid-template-columns: 1fr;
        }
        .category-hero h1 {
            font-size: 24px;
        }
        .category-hero .category-hero-desc {
            font-size: 15px;
        }
        .bottom-cta-bar {
            flex-direction: column;
            text-align: center;
            padding: 10px 16px;
            gap: 8px;
        }
        .bottom-cta-text {
            font-size: 13px;
        }
        .btn {
            font-size: 14px;
            padding: 8px 16px;
        }
        .footer-links {
            justify-content: flex-start;
        }
    }

/* roulang page: category4 */
:root {
            --primary: #2E6DB4;
            --primary-dark: #255A96;
            --primary-light: #4A8AD6;
            --primary-soft: #EAF1F9;
            --accent: #E8A33D;
            --accent-soft: #FDF3E3;
            --bg-main: #FFFFFF;
            --bg-alt: #F5F7FA;
            --bg-neutral: #FAFBFD;
            --border: #E8ECF1;
            --text-heading: #1A2B3C;
            --text-body: #3A4A5A;
            --text-muted: #7A8A9A;
            --text-white: #FFFFFF;
            --radius-card: 10px;
            --radius-btn: 5px;
            --radius-pill: 50px;
            --shadow-card: 0 2px 8px rgba(26, 43, 60, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(26, 43, 60, 0.12);
            --shadow-nav: 0 2px 12px rgba(26, 43, 60, 0.08);
            --transition: all 0.3s ease;
            --transition-slow: all 0.5s ease;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --section-padding: 80px 0;
            --section-padding-mobile: 48px 0;
            --container-max: 1200px;
        }

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

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            font-weight: 400;
            color: var(--text-body);
            background-color: var(--bg-main);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            padding-bottom: 72px;
        }

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

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

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

        button,
        input,
        textarea,
        select {
            font-family: var(--font-stack);
        }

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

        .grid-container {
            max-width: var(--container-max);
        }

        .section-padding {
            padding: var(--section-padding);
        }

        .section-padding-sm {
            padding: 48px 0;
        }

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

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

        .text-center {
            text-align: center;
        }

        .text-left {
            text-align: left;
        }

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

        .section-badge {
            display: inline-block;
            padding: 5px 16px;
            border-radius: var(--radius-pill);
            background-color: var(--primary-soft);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 720px;
            margin: 0 auto 32px;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: var(--bg-main);
            box-shadow: none;
            transition: var(--transition);
            border-bottom: 1px solid transparent;
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-nav);
            border-bottom: 1px solid var(--border);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 12px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

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

        .nav-logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .nav-logo-text .brand-main {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-heading);
        }

        .nav-logo-text .brand-sub {
            font-size: 11px;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 1px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            padding: 6px 0;
            position: relative;
            white-space: nowrap;
            display: inline-block;
        }

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

        .nav-links li a:hover::after,
        .nav-links li a:focus::after,
        .nav-links li a.active::after {
            width: 100%;
        }

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

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            white-space: nowrap;
            line-height: 1.5;
            text-decoration: none;
        }

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

        .btn-primary:hover,
        .btn-primary:focus {
            background-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 12px rgba(46, 109, 180, 0.25);
        }

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

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

        .btn-sm {
            padding: 7px 14px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }

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

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-heading);
            cursor: pointer;
            padding: 8px;
            line-height: 1;
        }

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

        /* ========== Mobile Nav ========== */
        .mobile-nav {
            display: none;
            background-color: var(--bg-main);
            border-top: 1px solid var(--border);
            padding: 16px 0;
            box-shadow: var(--shadow-nav);
        }

        .mobile-nav.open {
            display: block;
        }

        .mobile-nav ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .mobile-nav ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--bg-alt);
        }

        .mobile-nav ul li:last-child {
            border-bottom: none;
        }

        .mobile-nav ul li a {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-body);
            display: block;
            padding: 4px 0;
        }

        .mobile-nav ul li a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .mobile-nav-cta {
            display: flex;
            gap: 10px;
            margin-top: 16px;
        }

        /* ========== Hero ========== */
        .page-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            padding: 100px 0 80px;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(20, 30, 45, 0.68);
            z-index: 1;
        }

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

        .page-hero-content {
            max-width: 800px;
        }

        .page-hero-content h1 {
            font-size: 40px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            line-height: 1.3;
            letter-spacing: 0.5px;
        }

        .page-hero-content p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 680px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .hero-actions .btn-primary {
            background-color: var(--primary);
            border: none;
        }

        .hero-actions .btn-primary:hover {
            background-color: var(--primary-dark);
        }

        .hero-actions .btn-secondary {
            background-color: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
        }

        .hero-actions .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.2);
            border-color: #fff;
            color: #fff;
        }

        /* ========== Stats Strip ========== */
        .stats-strip {
            display: flex;
            gap: 32px;
            margin-top: 36px;
            flex-wrap: wrap;
        }

        .stat-item {
            text-align: left;
        }

        .stat-number {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        /* ========== Content Cards ========== */
        .card-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .card-grid .card-item {
            flex: 0 0 calc(33.333% - 16px);
            max-width: calc(33.333% - 16px);
        }

        .card-article {
            background-color: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
            border: 1px solid var(--border);
        }

        .card-article:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--primary-soft);
        }

        .card-article-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: var(--bg-alt);
        }

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

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

        .card-article-body {
            padding: 22px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-article-tag {
            display: inline-block;
            padding: 3px 12px;
            background-color: var(--primary-soft);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
            align-self: flex-start;
        }

        .card-article-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.45;
            margin-bottom: 8px;
            transition: var(--transition);
        }

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

        .card-article-date {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .card-article-excerpt {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

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

        .card-article-link i {
            transition: transform 0.3s ease;
        }

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

        .card-article-link:hover i {
            transform: translateX(4px);
        }

        /* ========== Sidebar ========== */
        .sidebar-widget {
            background-color: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            padding: 24px;
            margin-bottom: 24px;
        }

        .sidebar-widget-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-widget-title i {
            color: var(--primary);
            font-size: 15px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud a {
            display: inline-block;
            padding: 5px 14px;
            background-color: var(--bg-alt);
            color: var(--text-body);
            font-size: 13px;
            border-radius: var(--radius-pill);
            transition: var(--transition);
            border: 1px solid transparent;
        }

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

        .sidebar-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .sidebar-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--bg-alt);
        }

        .sidebar-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .sidebar-list li a {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            display: block;
            transition: var(--transition);
        }

        .sidebar-list li a:hover,
        .sidebar-list li a:focus {
            color: var(--primary);
        }

        .sidebar-list li span {
            display: block;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ========== Pagination ========== */
        .pagination-area {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .pagination-area a,
        .pagination-area span.current {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid var(--border);
            background-color: #fff;
            color: var(--text-body);
        }

        .pagination-area a:hover,
        .pagination-area a:focus {
            background-color: var(--primary-soft);
            color: var(--primary);
            border-color: var(--primary);
        }

        .pagination-area span.current {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .pagination-area .page-ellipsis {
            border: none;
            background: none;
            color: var(--text-muted);
            font-size: 16px;
            padding: 0 4px;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 12px;
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: var(--transition);
        }

        .faq-item.open .faq-icon {
            background-color: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            margin: 0;
            padding-top: 4px;
            border-top: 1px solid var(--bg-alt);
            padding-top: 14px;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-soft) 0%, #fff 65%);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .cta-panel {
            background-color: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card-hover);
            padding: 48px 40px;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            border: 1px solid var(--border);
        }

        .cta-panel h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .cta-panel p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        /* ========== Bottom Fixed Bar ========== */
        .bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 90;
            background-color: var(--text-heading);
            color: #fff;
            padding: 12px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: transform 0.4s ease, opacity 0.4s ease;
            box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.15);
        }

        .bottom-bar.hidden {
            transform: translateY(100%);
            opacity: 0;
            pointer-events: none;
        }

        .bottom-bar-text {
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.5;
        }

        .bottom-bar .btn-primary {
            background-color: var(--primary);
            border: none;
            min-width: 120px;
        }

        .bottom-bar .btn-primary:hover {
            background-color: var(--primary-light);
        }

        .bottom-bar-float {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 89;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #fff;
            display: none;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(46, 109, 180, 0.35);
            transition: var(--transition);
            border: none;
        }

        .bottom-bar-float.visible {
            display: flex;
        }

        .bottom-bar-float:hover,
        .bottom-bar-float:focus {
            background-color: var(--primary-dark);
        }

        /* ========== Footer ========== */
        .site-footer {
            background-color: #1A2B3C;
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 32px;
            font-size: 14px;
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            letter-spacing: 1px;
        }

        .footer-copyright {
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
            margin-bottom: 8px;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

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

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

        .footer-divider {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin-top: 24px;
            padding-top: 4px;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .card-grid .card-item {
                flex: 0 0 calc(50% - 12px);
                max-width: calc(50% - 12px);
            }

            .page-hero-content h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .nav-cta-group {
                display: none;
            }

            .nav-toggle {
                display: block;
            }

            .page-hero {
                padding: 64px 0 48px;
            }

            .page-hero-content h1 {
                font-size: 28px;
            }

            .page-hero-content p {
                font-size: 16px;
            }

            .stats-strip {
                gap: 20px;
                margin-top: 24px;
            }

            .stat-number {
                font-size: 22px;
            }

            .card-grid .card-item {
                flex: 0 0 100%;
                max-width: 100%;
            }

            .section-padding {
                padding: var(--section-padding-mobile);
            }

            .section-title {
                font-size: 24px;
            }

            .cta-panel {
                padding: 32px 22px;
            }

            .cta-panel h2 {
                font-size: 22px;
            }

            .bottom-bar {
                padding: 10px 14px;
                gap: 10px;
            }

            .bottom-bar-text {
                font-size: 13px;
            }

            .bottom-bar .btn-primary {
                min-width: 96px;
                padding: 8px 14px;
                font-size: 13px;
            }

            .site-footer {
                padding: 32px 0 20px;
            }

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

        @media (max-width: 520px) {
            .page-hero-content h1 {
                font-size: 24px;
            }

            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .stats-strip {
                gap: 16px;
            }

            .stat-number {
                font-size: 20px;
            }

            .stat-label {
                font-size: 12px;
            }

            .bottom-bar-text {
                font-size: 12px;
                line-height: 1.4;
            }

            .bottom-bar .btn-primary {
                min-width: 88px;
                padding: 7px 10px;
                font-size: 12px;
            }

            .faq-question {
                font-size: 15px;
                padding: 14px 16px;
            }

            .faq-answer p {
                font-size: 14px;
            }
        }