/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #1a1a1a;
            --color-gold: #d4a843;
            --color-gold-dark: #b3862d;
            --color-gold-light: #e8c97a;
            --color-white: #ffffff;
            --color-bg-light: #f5f5f5;
            --color-bg-card: #ffffff;
            --color-text-dark: #1a1a1a;
            --color-text-body: #444444;
            --color-text-muted: #666666;
            --color-text-light: #999999;
            --color-border: #eaeaea;
            --color-shadow: rgba(0, 0, 0, 0.06);
            --color-shadow-hover: rgba(0, 0, 0, 0.12);
            --nav-width: 240px;
            --radius: 8px;
            --radius-sm: 4px;
            --transition: 0.3s ease;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            --max-width: 1280px;
            --padding-section: 80px 0;
            --padding-section-mobile: 40px 0;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text-body);
            background: var(--color-bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            display: flex;
            min-height: 100vh;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        ul, ol {
            list-style: none;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 600;
            line-height: 1.3;
            color: var(--color-text-dark);
        }

        /* ===== Layout ===== */
        .app-shell {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--color-primary);
            color: var(--color-white);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: transform var(--transition);
            overflow-y: auto;
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            padding: 20px 24px;
            height: 80px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            flex-shrink: 0;
        }
        .sidebar-brand .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--color-gold);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-right: 12px;
            flex-shrink: 0;
        }
        .sidebar-brand .brand-text {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-white);
            letter-spacing: 0.5px;
            line-height: 1.3;
        }
        .sidebar-nav {
            flex: 1;
            padding: 16px 0;
        }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            height: 48px;
            padding: 0 24px;
            font-size: 0.95rem;
            color: rgba(255,255,255,0.75);
            transition: all var(--transition);
            position: relative;
            border-left: 3px solid transparent;
        }
        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            margin-right: 14px;
            font-size: 1rem;
            color: rgba(255,255,255,0.5);
            transition: color var(--transition);
        }
        .sidebar-nav .nav-item:hover {
            color: var(--color-white);
            background: rgba(255,255,255,0.06);
            border-left-color: var(--color-gold);
        }
        .sidebar-nav .nav-item:hover i {
            color: var(--color-gold);
        }
        .sidebar-nav .nav-item.active {
            color: var(--color-white);
            background: rgba(212,168,67,0.12);
            border-left-color: var(--color-gold);
        }
        .sidebar-nav .nav-item.active i {
            color: var(--color-gold);
        }
        .sidebar-footer {
            padding: 20px 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            flex-shrink: 0;
        }
        .sidebar-footer .social-links {
            display: flex;
            gap: 16px;
        }
        .sidebar-footer .social-links a {
            color: rgba(255,255,255,0.4);
            font-size: 1.1rem;
            transition: color var(--transition);
        }
        .sidebar-footer .social-links a:hover {
            color: var(--color-gold);
        }

        /* Main Content Area */
        .main-content {
            margin-left: var(--nav-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 64px;
            background: var(--color-primary);
            color: var(--color-white);
            z-index: 1100;
            align-items: center;
            padding: 0 20px;
            box-shadow: 0 2px 12px rgba(0,0,0,0.15);
        }
        .mobile-header .brand-text {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-white);
        }
        .mobile-header .hamburger {
            background: none;
            border: none;
            color: var(--color-white);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            z-index: 1050;
            opacity: 0;
            transition: opacity var(--transition);
            pointer-events: none;
        }
        .mobile-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: -280px;
            width: 280px;
            height: 100vh;
            background: var(--color-primary);
            color: var(--color-white);
            z-index: 1060;
            transition: left var(--transition);
            padding-top: 64px;
            overflow-y: auto;
        }
        .mobile-drawer.open {
            left: 0;
        }
        .mobile-drawer .drawer-nav .nav-item {
            display: flex;
            align-items: center;
            padding: 14px 24px;
            color: rgba(255,255,255,0.8);
            font-size: 1rem;
            border-left: 3px solid transparent;
            transition: all var(--transition);
        }
        .mobile-drawer .drawer-nav .nav-item i {
            width: 22px;
            margin-right: 14px;
            color: rgba(255,255,255,0.5);
        }
        .mobile-drawer .drawer-nav .nav-item.active {
            color: var(--color-white);
            background: rgba(212,168,67,0.12);
            border-left-color: var(--color-gold);
        }
        .mobile-drawer .drawer-nav .nav-item.active i {
            color: var(--color-gold);
        }
        .mobile-drawer .drawer-nav .nav-item:hover {
            color: var(--color-white);
            background: rgba(255,255,255,0.06);
        }

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

        /* ===== Section Spacing ===== */
        .section {
            padding: var(--padding-section);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.25rem;
            font-weight: 600;
            color: var(--color-text-dark);
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            max-width: 640px;
            margin: 0 auto;
        }
        .section-bg-dark {
            background: var(--color-primary);
            color: var(--color-white);
        }
        .section-bg-dark .section-title h2 {
            color: var(--color-white);
        }
        .section-bg-dark .section-title p {
            color: rgba(255,255,255,0.7);
        }
        .section-bg-light {
            background: var(--color-bg-light);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary) url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26,26,26,0.88) 0%, rgba(26,26,26,0.55) 70%, rgba(26,26,26,0.3) 100%);
            z-index: 1;
        }
        .hero .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 40px 24px;
        }
        .hero .hero-content h1 {
            font-size: 3rem;
            font-weight: 700;
            color: var(--color-white);
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .hero .hero-content .hero-sub {
            font-size: 1.25rem;
            color: var(--color-gold-light);
            font-weight: 400;
            margin-bottom: 32px;
            letter-spacing: 0.3px;
        }
        .hero .hero-content .hero-desc {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.8);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all var(--transition);
            border: 2px solid transparent;
            line-height: 1.4;
            text-align: center;
            gap: 8px;
        }
        .btn-primary {
            background: var(--color-gold);
            color: var(--color-white);
            border-color: var(--color-gold);
        }
        .btn-primary:hover {
            background: var(--color-gold-dark);
            border-color: var(--color-gold-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212,168,67,0.3);
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .btn-outline-light {
            background: transparent;
            color: var(--color-white);
            border-color: rgba(255,255,255,0.5);
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,0.1);
            border-color: var(--color-white);
            transform: translateY(-2px);
        }
        .btn-outline-gold {
            background: transparent;
            color: var(--color-gold);
            border-color: var(--color-gold);
        }
        .btn-outline-gold:hover {
            background: var(--color-gold);
            color: var(--color-white);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 1.05rem;
        }

        /* ===== Feature Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--color-bg-card);
            border-radius: var(--radius);
            padding: 32px 24px;
            box-shadow: 0 2px 8px var(--color-shadow);
            transition: all var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 28px var(--color-shadow-hover);
        }
        .feature-card .icon-box {
            width: 56px;
            height: 56px;
            background: rgba(212,168,67,0.12);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: var(--color-gold);
            transition: all var(--transition);
        }
        .feature-card:hover .icon-box {
            background: var(--color-gold);
            color: var(--color-white);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ===== Scenario Section ===== */
        .scenario-block {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 60px;
            background: var(--color-bg-card);
            border-radius: var(--radius);
            padding: 32px;
            box-shadow: 0 2px 8px var(--color-shadow);
            transition: box-shadow var(--transition);
        }
        .scenario-block:last-child {
            margin-bottom: 0;
        }
        .scenario-block:hover {
            box-shadow: 0 6px 24px var(--color-shadow-hover);
        }
        .scenario-block .scenario-img {
            flex: 0 0 45%;
            max-width: 45%;
            border-radius: var(--radius);
            overflow: hidden;
        }
        .scenario-block .scenario-img img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            border-radius: var(--radius);
        }
        .scenario-block .scenario-text {
            flex: 1;
        }
        .scenario-block .scenario-text h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: 8px;
        }
        .scenario-block .scenario-text .scenario-tag {
            display: inline-block;
            background: rgba(212,168,67,0.12);
            color: var(--color-gold-dark);
            font-size: 0.8rem;
            font-weight: 500;
            padding: 2px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .scenario-block .scenario-text p {
            font-size: 0.95rem;
            color: var(--color-text-body);
            line-height: 1.7;
        }
        .scenario-block.reverse {
            flex-direction: row-reverse;
        }

        /* ===== Testimonials ===== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: var(--color-bg-card);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: 0 2px 8px var(--color-shadow);
            transition: all var(--transition);
            display: flex;
            align-items: flex-start;
            gap: 20px;
        }
        .testimonial-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px var(--color-shadow-hover);
        }
        .testimonial-card .client-logo {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--color-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--color-gold);
            flex-shrink: 0;
            border: 2px solid var(--color-border);
        }
        .testimonial-card blockquote {
            font-size: 0.92rem;
            color: var(--color-text-body);
            line-height: 1.7;
            font-style: italic;
            margin-bottom: 8px;
        }
        .testimonial-card .client-name {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text-dark);
        }
        .testimonial-card .client-role {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        /* ===== Pricing ===== */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: start;
        }
        .pricing-card {
            background: var(--color-bg-card);
            border-radius: var(--radius);
            padding: 36px 28px;
            box-shadow: 0 2px 8px var(--color-shadow);
            transition: all var(--transition);
            text-align: center;
            border: 2px solid transparent;
            position: relative;
        }
        .pricing-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 28px var(--color-shadow-hover);
        }
        .pricing-card.featured {
            border-color: var(--color-gold);
            box-shadow: 0 4px 20px rgba(212,168,67,0.15);
            transform: scale(1.02);
        }
        .pricing-card.featured:hover {
            transform: scale(1.02) translateY(-4px);
        }
        .pricing-card .pricing-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--color-gold);
            color: var(--color-white);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 18px;
            border-radius: 20px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .pricing-card .plan-name {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: 8px;
        }
        .pricing-card .plan-price {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 4px;
        }
        .pricing-card .plan-price span {
            font-size: 1rem;
            font-weight: 400;
            color: var(--color-text-muted);
        }
        .pricing-card .plan-desc {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-bottom: 20px;
        }
        .pricing-card .plan-features {
            text-align: left;
            margin-bottom: 24px;
        }
        .pricing-card .plan-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 0;
            font-size: 0.9rem;
            color: var(--color-text-body);
        }
        .pricing-card .plan-features li i {
            color: var(--color-gold);
            font-size: 0.85rem;
            width: 16px;
            text-align: center;
        }
        .pricing-card .btn {
            width: 100%;
        }

        /* ===== CMS News List ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .news-card {
            background: var(--color-bg-card);
            border-radius: var(--radius);
            padding: 0;
            box-shadow: 0 2px 8px var(--color-shadow);
            transition: all var(--transition);
            display: flex;
            align-items: stretch;
            overflow: hidden;
        }
        .news-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px var(--color-shadow-hover);
        }
        .news-card .news-thumb {
            flex: 0 0 180px;
            min-height: 120px;
            background: var(--color-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--color-text-light);
            overflow: hidden;
        }
        .news-card .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-card .news-body {
            flex: 1;
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .news-card .news-body .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }
        .news-card .news-body .news-meta .news-tag {
            background: rgba(212,168,67,0.12);
            color: var(--color-gold-dark);
            padding: 2px 10px;
            border-radius: 4px;
            font-weight: 500;
        }
        .news-card .news-body h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-card .news-body h3 a {
            color: inherit;
        }
        .news-card .news-body h3 a:hover {
            color: var(--color-gold-dark);
        }
        .news-card .news-body p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.6;
        }
        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--color-text-muted);
            font-size: 1rem;
            background: var(--color-bg-card);
            border-radius: var(--radius);
            box-shadow: 0 2px 8px var(--color-shadow);
        }
        .news-empty i {
            font-size: 2.5rem;
            color: var(--color-text-light);
            margin-bottom: 16px;
            display: block;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius);
            box-shadow: 0 2px 8px var(--color-shadow);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: 0 4px 16px var(--color-shadow-hover);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text-dark);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 12px;
            transition: background var(--transition);
        }
        .faq-item .faq-question:hover {
            background: rgba(212,168,67,0.04);
        }
        .faq-item .faq-question .faq-icon {
            font-size: 1.2rem;
            color: var(--color-gold);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--color-text-body);
            font-size: 0.92rem;
            line-height: 1.7;
            border-top: 0 solid var(--color-gold);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 16px 24px 20px;
            border-top-width: 2px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-primary);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 80px 24px;
        }
        .cta-section h2 {
            font-size: 2.25rem;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
            max-width: 560px;
            margin: 0 auto 32px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-col h4 {
            color: var(--color-white);
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
        }
        .footer-col ul li {
            padding: 4px 0;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--color-gold);
        }
        .footer-col .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            padding: 4px 0;
        }
        .footer-col .contact-item i {
            color: var(--color-gold);
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.4);
        }

        /* ===== Animations ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeInUp 0.6s ease forwards;
        }
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-in-delay-1 { animation-delay: 0.1s; }
        .fade-in-delay-2 { animation-delay: 0.2s; }
        .fade-in-delay-3 { animation-delay: 0.3s; }
        .fade-in-delay-4 { animation-delay: 0.4s; }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pricing-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .pricing-card.featured {
                transform: none;
            }
            .pricing-card.featured:hover {
                transform: translateY(-4px);
            }
        }

        @media (max-width: 991px) {
            :root {
                --padding-section: 60px 0;
            }
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 64px;
            }
            .hero {
                min-height: 70vh;
            }
            .hero .hero-content h1 {
                font-size: 2.4rem;
            }
            .section-title h2 {
                font-size: 1.8rem;
            }
            .scenario-block {
                flex-direction: column;
                padding: 24px;
                gap: 24px;
            }
            .scenario-block .scenario-img {
                flex: 0 0 100%;
                max-width: 100%;
            }
            .scenario-block .scenario-img img {
                height: 200px;
            }
            .scenario-block.reverse {
                flex-direction: column;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin: 0 auto;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .news-card {
                flex-direction: column;
            }
            .news-card .news-thumb {
                flex: 0 0 180px;
                width: 100%;
            }
        }

        @media (max-width: 767px) {
            :root {
                --padding-section: 40px 0;
            }
            .hero {
                min-height: 60vh;
            }
            .hero .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero .hero-content .hero-sub {
                font-size: 1rem;
            }
            .hero .hero-content .hero-desc {
                font-size: 0.92rem;
            }
            .section-title h2 {
                font-size: 1.5rem;
            }
            .section-title {
                margin-bottom: 32px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .feature-card {
                padding: 24px 20px;
            }
            .scenario-block {
                padding: 20px;
                gap: 16px;
            }
            .scenario-block .scenario-img img {
                height: 160px;
            }
            .scenario-block .scenario-text h3 {
                font-size: 1.2rem;
            }
            .pricing-card {
                padding: 28px 20px;
            }
            .cta-section .container {
                padding: 48px 24px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .news-card .news-body {
                padding: 16px 20px;
            }
            .faq-item .faq-question {
                padding: 14px 18px;
                font-size: 0.92rem;
            }
            .faq-item.active .faq-answer {
                padding: 12px 18px 16px;
            }
            .btn-lg {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
            .hero .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero .hero-content .hero-sub {
                font-size: 0.9rem;
            }
            .hero .hero-content .hero-desc {
                font-size: 0.85rem;
            }
            .section-title h2 {
                font-size: 1.3rem;
            }
            .feature-card .icon-box {
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
            }
            .feature-card h3 {
                font-size: 1.05rem;
            }
            .testimonial-card {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            .news-card .news-thumb {
                flex: 0 0 140px;
            }
            .pricing-card .plan-price {
                font-size: 2rem;
            }
            .mobile-header .brand-text {
                font-size: 0.85rem;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #1a1a1a;
            --color-accent: #d4a843;
            --color-accent-dark: #b3862d;
            --color-accent-light: #e8c96a;
            --color-white: #ffffff;
            --color-bg: #f5f5f5;
            --color-card: #ffffff;
            --color-dark-card: #2a2a2a;
            --color-text: #444444;
            --color-text-light: #666666;
            --color-text-lighter: #999999;
            --color-border: #eaeaea;
            --color-border-light: #f0f0f0;
            --color-success: #2ecc71;
            --color-warning: #f39c12;
            --color-error: #e74c3c;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            --font-size-xs: 0.75rem;
            --font-size-sm: 0.875rem;
            --font-size-base: 1rem;
            --font-size-lg: 1.125rem;
            --font-size-xl: 1.25rem;
            --font-size-2xl: 1.5rem;
            --font-size-3xl: 2rem;
            --font-size-4xl: 2.5rem;
            --font-size-5xl: 3rem;
            --font-weight-light: 300;
            --font-weight-regular: 400;
            --font-weight-medium: 500;
            --font-weight-semibold: 600;
            --font-weight-bold: 700;
            --line-height-tight: 1.2;
            --line-height-normal: 1.5;
            --line-height-relaxed: 1.7;
            --line-height-loose: 2;
            --spacing-xs: 0.25rem;
            --spacing-sm: 0.5rem;
            --spacing-md: 1rem;
            --spacing-lg: 1.5rem;
            --spacing-xl: 2rem;
            --spacing-2xl: 3rem;
            --spacing-3xl: 4rem;
            --spacing-4xl: 5rem;
            --spacing-5xl: 6rem;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-full: 50%;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
            --shadow-md: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-lg: 0 4px 16px rgba(0,0,0,0.10);
            --shadow-xl: 0 8px 32px rgba(0,0,0,0.12);
            --shadow-gold: 0 2px 12px rgba(212,168,67,0.25);
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --sidebar-width: 240px;
            --header-height: 0px;
            --content-max-width: 1280px;
            --z-sidebar: 100;
            --z-header: 90;
            --z-overlay: 80;
            --z-dropdown: 50;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-family);
            font-size: var(--font-size-base);
            font-weight: var(--font-weight-regular);
            line-height: var(--line-height-relaxed);
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--color-accent);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

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

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

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

        ul, ol {
            list-style: none;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--color-primary);
            font-weight: var(--font-weight-semibold);
            line-height: var(--line-height-tight);
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--content-max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: var(--spacing-xl);
            padding-right: var(--spacing-xl);
        }

        @media (max-width: 768px) {
            .container {
                padding-left: var(--spacing-md);
                padding-right: var(--spacing-md);
            }
        }

        /* ===== App Shell Layout ===== */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        /* ===== Sidebar Navigation ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background-color: var(--color-primary);
            color: var(--color-white);
            display: flex;
            flex-direction: column;
            z-index: var(--z-sidebar);
            overflow-y: auto;
            overflow-x: hidden;
            transition: transform var(--transition-base);
        }

        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: var(--spacing-lg) var(--spacing-lg);
            height: 72px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
            flex-shrink: 0;
        }

        .sidebar-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--color-accent);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: var(--font-size-lg);
            font-weight: var(--font-weight-bold);
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .sidebar-logo .logo-text {
            font-size: var(--font-size-base);
            font-weight: var(--font-weight-semibold);
            color: var(--color-white);
            letter-spacing: -0.01em;
            line-height: 1.2;
        }

        .sidebar-nav {
            flex: 1;
            padding: var(--spacing-md) 0;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            padding: 12px var(--spacing-lg);
            color: rgba(255,255,255,0.7);
            font-size: var(--font-size-sm);
            font-weight: var(--font-weight-medium);
            transition: all var(--transition-base);
            border-left: 3px solid transparent;
            position: relative;
        }

        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            font-size: var(--font-size-base);
            color: rgba(255,255,255,0.5);
            transition: color var(--transition-base);
        }

        .sidebar-nav .nav-item:hover {
            color: var(--color-white);
            background-color: rgba(255,255,255,0.06);
            border-left-color: var(--color-accent);
        }

        .sidebar-nav .nav-item:hover i {
            color: var(--color-accent);
        }

        .sidebar-nav .nav-item.active {
            color: var(--color-white);
            background-color: rgba(255,255,255,0.08);
            border-left-color: var(--color-accent);
        }

        .sidebar-nav .nav-item.active i {
            color: var(--color-accent);
        }

        .sidebar-nav .nav-item:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: -2px;
        }

        .sidebar-footer {
            padding: var(--spacing-md) var(--spacing-lg);
            border-top: 1px solid rgba(255,255,255,0.06);
            flex-shrink: 0;
        }

        .sidebar-footer .social-links {
            display: flex;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-sm);
        }

        .sidebar-footer .social-links a {
            color: rgba(255,255,255,0.4);
            font-size: var(--font-size-sm);
            transition: color var(--transition-base);
        }

        .sidebar-footer .social-links a:hover {
            color: var(--color-accent);
        }

        .sidebar-footer .copyright {
            font-size: var(--font-size-xs);
            color: rgba(255,255,255,0.3);
            line-height: 1.4;
        }

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

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background-color: var(--color-primary);
            color: var(--color-white);
            z-index: var(--z-header);
            padding: 0 var(--spacing-md);
            align-items: center;
            justify-content: space-between;
        }

        .mobile-header .mobile-logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .mobile-header .mobile-logo .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--color-accent);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: var(--font-size-sm);
            font-weight: var(--font-weight-bold);
            color: var(--color-primary);
        }

        .mobile-header .mobile-logo .logo-text {
            font-size: var(--font-size-sm);
            font-weight: var(--font-weight-semibold);
            color: var(--color-white);
        }

        .mobile-header .hamburger {
            width: 40px;
            height: 40px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-base);
        }

        .mobile-header .hamburger:hover {
            background: rgba(255,255,255,0.08);
        }

        .mobile-header .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--color-white);
            border-radius: 2px;
            transition: all var(--transition-base);
        }

        .mobile-header .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

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

        .mobile-header .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Mobile Drawer Overlay ===== */
        .drawer-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            z-index: calc(var(--z-overlay) - 1);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .drawer-overlay.show {
            opacity: 1;
        }

        /* ===== Page Header / Banner ===== */
        .page-banner {
            background: var(--color-primary);
            background-image: linear-gradient(135deg, var(--color-primary) 0%, #2a2a2a 100%);
            padding: var(--spacing-3xl) 0 var(--spacing-2xl);
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 40%;
            height: 100%;
            background: url('/assets/images/backpic/back-2.webp') no-repeat center center / cover;
            opacity: 0.08;
            pointer-events: none;
        }

        .page-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: var(--font-size-sm);
            color: rgba(255,255,255,0.5);
            margin-bottom: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .page-banner .breadcrumb a {
            color: rgba(255,255,255,0.6);
            transition: color var(--transition-base);
        }

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

        .page-banner .breadcrumb .separator {
            color: rgba(255,255,255,0.25);
        }

        .page-banner .breadcrumb .current {
            color: var(--color-accent);
        }

        .page-banner h1 {
            font-size: var(--font-size-4xl);
            font-weight: var(--font-weight-bold);
            color: var(--color-white);
            max-width: 800px;
            letter-spacing: -0.02em;
        }

        @media (max-width: 768px) {
            .page-banner h1 {
                font-size: var(--font-size-2xl);
            }
        }

        /* ===== Article Meta ===== */
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: var(--spacing-md);
            margin-top: var(--spacing-md);
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255,255,255,0.08);
        }

        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: var(--font-size-sm);
            color: rgba(255,255,255,0.6);
        }

        .article-meta .meta-item i {
            color: var(--color-accent);
            font-size: var(--font-size-xs);
        }

        .article-meta .category-tag {
            display: inline-block;
            padding: 2px 12px;
            background: var(--color-accent);
            color: var(--color-primary);
            font-size: var(--font-size-xs);
            font-weight: var(--font-weight-semibold);
            border-radius: 20px;
        }

        /* ===== Article Content ===== */
        .article-section {
            padding: var(--spacing-3xl) 0;
            flex: 1;
        }

        .article-wrapper {
            max-width: 860px;
            margin: 0 auto;
        }

        .article-body {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-3xl);
            box-shadow: var(--shadow-md);
        }

        .article-body h2 {
            font-size: var(--font-size-2xl);
            margin-top: var(--spacing-2xl);
            margin-bottom: var(--spacing-md);
            color: var(--color-primary);
        }

        .article-body h3 {
            font-size: var(--font-size-xl);
            margin-top: var(--spacing-xl);
            margin-bottom: var(--spacing-sm);
            color: var(--color-primary);
        }

        .article-body p {
            margin-bottom: var(--spacing-md);
            color: var(--color-text);
            line-height: var(--line-height-relaxed);
        }

        .article-body ul, .article-body ol {
            margin-bottom: var(--spacing-md);
            padding-left: var(--spacing-xl);
        }

        .article-body ul {
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

        .article-body li {
            margin-bottom: var(--spacing-sm);
            line-height: var(--line-height-relaxed);
        }

        .article-body blockquote {
            margin: var(--spacing-lg) 0;
            padding: var(--spacing-md) var(--spacing-xl);
            border-left: 4px solid var(--color-accent);
            background: var(--color-bg);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--color-text-light);
            font-style: italic;
        }

        .article-body img {
            margin: var(--spacing-lg) auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
        }

        .article-body pre {
            background: var(--color-primary);
            color: var(--color-white);
            padding: var(--spacing-lg);
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin-bottom: var(--spacing-md);
            font-size: var(--font-size-sm);
            line-height: 1.5;
        }

        .article-body code {
            font-family: 'Fira Code', 'Courier New', monospace;
            font-size: 0.9em;
        }

        .article-body a {
            color: var(--color-accent-dark);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

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

        .article-not-found {
            text-align: center;
            padding: var(--spacing-4xl) var(--spacing-xl);
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }

        .article-not-found .not-found-icon {
            font-size: 4rem;
            color: var(--color-accent);
            margin-bottom: var(--spacing-lg);
        }

        .article-not-found h2 {
            font-size: var(--font-size-2xl);
            margin-bottom: var(--spacing-md);
            color: var(--color-primary);
        }

        .article-not-found p {
            color: var(--color-text-light);
            margin-bottom: var(--spacing-xl);
        }

        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        /* ===== Related Articles ===== */
        .related-section {
            margin-top: var(--spacing-2xl);
            padding-top: var(--spacing-2xl);
            border-top: 1px solid var(--color-border);
        }

        .related-section h3 {
            font-size: var(--font-size-xl);
            margin-bottom: var(--spacing-lg);
            color: var(--color-primary);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: var(--spacing-lg);
        }

        .related-card {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            transition: all var(--transition-base);
            border: 1px solid transparent;
        }

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

        .related-card .related-title {
            font-size: var(--font-size-base);
            font-weight: var(--font-weight-medium);
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .related-date {
            font-size: var(--font-size-xs);
            color: var(--color-text-lighter);
        }

        .related-card:hover .related-title {
            color: var(--color-accent-dark);
        }

        .related-more {
            margin-top: var(--spacing-xl);
            text-align: center;
        }

        .related-more .btn-back {
            display: inline-flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: var(--spacing-sm);
            padding: 12px 28px;
            font-size: var(--font-size-sm);
            font-weight: var(--font-weight-semibold);
            line-height: 1;
            border-radius: var(--radius-sm);
            transition: all var(--transition-base);
            text-decoration: none;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background: var(--color-accent-dark);
            color: var(--color-white);
            transform: translateY(-1px);
            box-shadow: var(--shadow-gold);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-outline {
            background: transparent;
            color: var(--color-accent);
            border: 2px solid var(--color-accent);
        }

        .btn-outline:hover {
            background: var(--color-accent);
            color: var(--color-primary);
            transform: translateY(-1px);
        }

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

        .btn-light:hover {
            background: var(--color-bg);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: var(--font-size-xs);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255,255,255,0.8);
            padding: var(--spacing-3xl) 0 var(--spacing-lg);
            margin-top: auto;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: var(--spacing-2xl);
            margin-bottom: var(--spacing-2xl);
        }

        .site-footer .footer-col h4 {
            color: var(--color-white);
            font-size: var(--font-size-base);
            font-weight: var(--font-weight-semibold);
            margin-bottom: var(--spacing-md);
            position: relative;
            padding-bottom: var(--spacing-sm);
        }

        .site-footer .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: var(--color-accent);
        }

        .site-footer .footer-col p {
            font-size: var(--font-size-sm);
            color: rgba(255,255,255,0.55);
            line-height: var(--line-height-relaxed);
        }

        .site-footer .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .site-footer .footer-col ul li a {
            color: rgba(255,255,255,0.55);
            font-size: var(--font-size-sm);
            transition: all var(--transition-base);
        }

        .site-footer .footer-col ul li a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }

        .site-footer .contact-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: var(--font-size-sm);
            color: rgba(255,255,255,0.55);
            margin-bottom: var(--spacing-sm);
        }

        .site-footer .contact-item i {
            color: var(--color-accent);
            width: 16px;
            text-align: center;
        }

        .site-footer .footer-bottom {
            padding-top: var(--spacing-lg);
            border-top: 1px solid rgba(255,255,255,0.06);
            text-align: center;
            font-size: var(--font-size-xs);
            color: rgba(255,255,255,0.35);
        }

        @media (max-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }
        }

        /* ===== Scrollbar ===== */
        .sidebar::-webkit-scrollbar {
            width: 4px;
        }

        .sidebar::-webkit-scrollbar-track {
            background: transparent;
        }

        .sidebar::-webkit-scrollbar-thumb {
            background: rgba(255,255,255,0.15);
            border-radius: 4px;
        }

        .sidebar::-webkit-scrollbar-thumb:hover {
            background: rgba(255,255,255,0.25);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            :root {
                --sidebar-width: 220px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .mobile-header {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                padding-top: 60px;
            }

            .drawer-overlay {
                display: block;
                pointer-events: none;
            }

            .drawer-overlay.show {
                pointer-events: auto;
            }

            .article-body {
                padding: var(--spacing-lg);
            }

            .article-body h2 {
                font-size: var(--font-size-xl);
            }

            .article-body h3 {
                font-size: var(--font-size-lg);
            }

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

            .page-banner h1 {
                font-size: var(--font-size-2xl);
            }
        }

        @media (max-width: 576px) {
            .article-body {
                padding: var(--spacing-md);
                border-radius: var(--radius-md);
            }

            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-sm);
            }

            .page-banner {
                padding: var(--spacing-2xl) 0 var(--spacing-xl);
            }

            .page-banner h1 {
                font-size: var(--font-size-xl);
            }

            .related-section h3 {
                font-size: var(--font-size-lg);
            }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-lg { margin-top: var(--spacing-lg); }
        .mb-lg { margin-bottom: var(--spacing-lg); }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .article-body {
            animation: fadeInUp 0.4s ease-out;
        }

        /* ===== Print ===== */
        @media print {
            .sidebar, .mobile-header, .drawer-overlay, .site-footer, .related-section {
                display: none !important;
            }

            .main-content {
                margin-left: 0 !important;
                padding-top: 0 !important;
            }

            .article-body {
                box-shadow: none;
                padding: 0;
            }

            .page-banner {
                background: none;
                padding: var(--spacing-lg) 0;
            }

            .page-banner h1 {
                color: var(--color-primary);
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #1a1a1a;
            --color-accent: #d4a843;
            --color-accent-hover: #b3862d;
            --color-accent-light: rgba(212, 168, 67, 0.12);
            --color-bg: #ffffff;
            --color-bg-alt: #f5f5f5;
            --color-bg-card: #ffffff;
            --color-bg-dark: #1a1a1a;
            --color-text: #444444;
            --color-text-strong: #1a1a1a;
            --color-text-muted: #666666;
            --color-text-light: #999999;
            --color-text-on-dark: #ffffff;
            --color-text-on-accent: #ffffff;
            --color-border: #eaeaea;
            --color-border-light: #eeeeee;
            --color-success: #2e7d32;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.14);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.4s ease;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --max-width: 1280px;
            --sidebar-width: 260px;
            --header-height: 80px;
            --spacer: 80px;
            --spacer-half: 40px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            display: flex;
            min-height: 100vh;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 4px;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 32px;
            width: 100%;
        }

        /* ===== Sidebar / App Shell Navigation ===== */
        .app-shell {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }

        .sidebar {
            width: var(--sidebar-width);
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 0;
            overflow-y: auto;
            transition: transform var(--transition-base);
        }

        .sidebar-logo {
            padding: 28px 24px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .sidebar-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--color-accent);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .sidebar-logo .logo-text {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text-on-dark);
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .sidebar-nav {
            flex: 1;
            padding: 16px 0;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 24px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            font-weight: 400;
            transition: all var(--transition-fast);
            border-left: 3px solid transparent;
            text-decoration: none;
        }

        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-fast);
        }

        .sidebar-nav .nav-item:hover {
            background: rgba(255, 255, 255, 0.05);
            color: var(--color-text-on-dark);
            border-left-color: var(--color-accent);
        }
        .sidebar-nav .nav-item:hover i {
            color: var(--color-accent);
        }

        .sidebar-nav .nav-item.active {
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-text-on-dark);
            border-left-color: var(--color-accent);
            font-weight: 500;
        }
        .sidebar-nav .nav-item.active i {
            color: var(--color-accent);
        }

        .sidebar-footer {
            padding: 20px 24px 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .sidebar-footer .social-links {
            display: flex;
            gap: 12px;
            margin-bottom: 12px;
        }
        .sidebar-footer .social-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 1.1rem;
            transition: color var(--transition-fast);
        }
        .sidebar-footer .social-links a:hover {
            color: var(--color-accent);
        }

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

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--color-bg-dark);
            z-index: 999;
            padding: 0 20px;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }
        .mobile-header .logo-text {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text-on-dark);
        }
        .mobile-header .hamburger {
            background: none;
            border: none;
            color: var(--color-text-on-dark);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .mobile-header .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .mobile-header .hamburger:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        /* ===== Mobile Overlay ===== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 998;
            opacity: 0;
            transition: opacity var(--transition-base);
            pointer-events: none;
        }
        .sidebar-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            background: var(--color-bg-dark);
            position: relative;
            padding: 100px 0 80px;
            overflow: hidden;
            min-height: 360px;
            display: flex;
            align-items: center;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 26, 0.88) 40%, rgba(26, 26, 26, 0.70) 100%);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero h1 {
            font-size: 3rem;
            font-weight: 700;
            color: var(--color-text-on-dark);
            letter-spacing: -0.02em;
            line-height: 1.2;
            max-width: 720px;
            margin-bottom: 20px;
        }
        .category-hero h1 .highlight {
            color: var(--color-accent);
        }
        .category-hero .hero-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .category-hero .hero-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: var(--color-text-on-accent);
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            text-decoration: none;
        }
        .category-hero .hero-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 67, 0.30);
        }
        .category-hero .hero-cta:active {
            transform: scale(0.97);
        }

        /* ===== Section Shared ===== */
        .section {
            padding: var(--spacer) 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 600;
            color: var(--color-text-strong);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-dark .section-title {
            color: var(--color-text-on-dark);
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            max-width: 640px;
            margin-bottom: 48px;
            line-height: 1.7;
        }
        .section-dark .section-sub {
            color: rgba(255, 255, 255, 0.6);
        }

        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header .section-sub {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: 20px 0 0;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .sep {
            color: var(--color-border);
        }
        .breadcrumb .current {
            color: var(--color-text-strong);
            font-weight: 500;
        }

        /* ===== Guide Steps ===== */
        .guide-steps {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 32px;
        }
        .guide-step-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .guide-step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .guide-step-card .step-number {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--color-accent-light);
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -0.03em;
        }
        .guide-step-card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--color-text-strong);
            margin-bottom: 12px;
        }
        .guide-step-card p {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }
        .guide-step-card .step-icon {
            color: var(--color-accent);
            font-size: 1.6rem;
            margin-bottom: 16px;
        }

        /* ===== Features / Highlights ===== */
        .features-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .feature-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 24px;
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .feature-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--color-accent);
        }
        .feature-item .fi-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--color-accent-light);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 1.3rem;
        }
        .feature-item h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text-strong);
            margin-bottom: 6px;
        }
        .feature-item p {
            font-size: 0.92rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ===== Process Flow ===== */
        .process-flow {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
        }
        .process-flow::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: var(--color-border);
            z-index: 0;
        }
        .process-step {
            flex: 1;
            min-width: 140px;
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--color-bg);
            padding: 16px 8px;
        }
        .section-alt .process-step {
            background: var(--color-bg-alt);
        }
        .process-step .ps-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-accent);
            color: var(--color-text-on-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 auto 16px;
            box-shadow: 0 4px 12px rgba(212, 168, 67, 0.25);
        }
        .process-step h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-strong);
            margin-bottom: 4px;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

        /* ===== Scenarios ===== */
        .scenarios-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .scenario-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-bg-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .scenario-card .scenario-img {
            height: 200px;
            background: var(--color-bg-alt);
            overflow: hidden;
        }
        .scenario-card .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .scenario-card .scenario-body {
            padding: 24px 24px 28px;
        }
        .scenario-card .scenario-body h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--color-text-strong);
            margin-bottom: 8px;
        }
        .scenario-card .scenario-body p {
            font-size: 0.92rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }
        .scenario-card .scenario-tag {
            display: inline-block;
            padding: 4px 14px;
            background: var(--color-accent-light);
            color: var(--color-accent);
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 500;
            margin-bottom: 12px;
        }

        /* ===== FAQ Accordion ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--color-bg-card);
            transition: border-color var(--transition-fast);
        }
        .faq-item.open {
            border-color: var(--color-accent);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text-strong);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: background var(--transition-fast);
            gap: 16px;
        }
        .faq-question:hover {
            background: var(--color-bg-alt);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: -2px;
        }
        .faq-question .faq-toggle {
            flex-shrink: 0;
            font-size: 1.2rem;
            color: var(--color-accent);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-toggle {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            padding: 0 24px;
            color: var(--color-text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            text-align: center;
            padding: 80px 0;
            background: var(--color-bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            opacity: 0.10;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 600;
            color: var(--color-text-on-dark);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.6);
            max-width: 560px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .cta-section .cta-btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            text-decoration: none;
        }
        .cta-btn-primary {
            background: var(--color-accent);
            color: var(--color-text-on-accent);
        }
        .cta-btn-primary:hover {
            background: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 67, 0.30);
        }
        .cta-btn-secondary {
            background: transparent;
            color: var(--color-text-on-dark);
            border: 1px solid rgba(255, 255, 255, 0.25);
        }
        .cta-btn-secondary:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text-on-dark);
            margin-bottom: 16px;
        }
        .footer-col p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
        }
        .footer-col .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 12px;
        }
        .footer-col .contact-item i {
            width: 18px;
            color: var(--color-accent);
        }
        .footer-bottom {
            text-align: center;
            padding: 24px 0;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.35);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .guide-steps {
                grid-template-columns: 1fr 1fr;
            }
            .process-flow::before {
                display: none;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacer: 48px;
                --sidebar-width: 0px;
            }

            .sidebar {
                transform: translateX(-100%);
                width: 280px;
                z-index: 1001;
            }
            .sidebar.open {
                transform: translateX(0);
            }

            .mobile-header {
                display: flex;
            }

            .main-content {
                margin-left: 0;
                padding-top: 64px;
            }

            .category-hero {
                padding: 60px 0 48px;
                min-height: 280px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero .hero-sub {
                font-size: 1rem;
            }

            .section-title {
                font-size: 1.75rem;
            }

            .guide-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .scenarios-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .process-flow {
                flex-direction: column;
                align-items: stretch;
                gap: 20px;
            }
            .process-step {
                display: flex;
                align-items: center;
                gap: 16px;
                text-align: left;
                padding: 12px;
            }
            .process-step .ps-circle {
                margin: 0;
                flex-shrink: 0;
            }

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

            .cta-section h2 {
                font-size: 1.8rem;
            }
            .cta-section .cta-btn-group {
                flex-direction: column;
                align-items: center;
            }

            .container {
                padding: 0 20px;
            }

            .feature-item {
                padding: 18px;
            }

            .sidebar-overlay.open {
                display: block;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .category-hero .hero-sub {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .guide-step-card {
                padding: 24px 20px;
            }
            .guide-step-card .step-number {
                font-size: 2.2rem;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Animations ===== */
        .animate-in {
            opacity: 0;
            transform: translateY(16px);
            animation: fadeUp 0.5s ease forwards;
        }
        @keyframes fadeUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }