/* roulang page: index */
:root {
            --primary: #0c1222;
            --primary-light: #141b33;
            --accent-gold: #f0b429;
            --accent-gold-light: #fcd34d;
            --accent-cyan: #06b6d4;
            --accent-cyan-light: #22d3ee;
            --surface: rgba(255, 255, 255, 0.05);
            --surface-hover: rgba(255, 255, 255, 0.1);
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-active: rgba(240, 180, 41, 0.3);
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 40px rgba(240, 180, 41, 0.08);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--primary);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-cyan-light);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* header & nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(12, 18, 34, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(12, 18, 34, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.5px;
        }
        .logo i {
            color: var(--accent-gold);
            font-size: 1.8rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.9;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a i {
            font-size: 0.85rem;
            opacity: 0.6;
        }
        .nav-links a:hover {
            color: var(--text-primary);
            background: var(--surface);
        }
        .nav-links a.active {
            color: var(--accent-gold);
            background: rgba(240, 180, 41, 0.1);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent-gold);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: 16px;
        }
        .nav-cta .btn-sm {
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--accent-gold), #d97706);
            color: #0c1222;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-cta .btn-sm:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(240, 180, 41, 0.3);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--surface);
        }
        @media (max-width: 1024px) {
            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(12, 18, 34, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border-subtle);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius) var(--radius);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-links a {
                width: 100%;
                padding: 14px 20px;
                border-radius: 10px;
                font-size: 1.05rem;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                background: rgba(240, 180, 41, 0.12);
                border-left: 3px solid var(--accent-gold);
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                width: 100%;
            }
            .nav-cta .btn-sm {
                width: 100%;
                text-align: center;
                padding: 14px 20px;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-wrap {
                height: 64px;
            }
            .logo {
                font-size: 1.35rem;
            }
        }
        @media (max-width: 520px) {
            .logo i {
                font-size: 1.4rem;
            }
            .logo {
                font-size: 1.2rem;
                gap: 6px;
            }
        }

        /* hero */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            padding: 120px 0 80px;
            overflow: hidden;
            background: linear-gradient(135deg, #0a0e1a 0%, #0c1222 30%, #141b33 60%, #0a0e1a 100%);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 40%, rgba(6, 182, 212, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 60%, rgba(240, 180, 41, 0.04) 0%, transparent 50%);
            pointer-events: none;
        }
        .hero-stars {
            position: absolute;
            inset: 0;
            overflow: hidden;
            pointer-events: none;
        }
        .hero-stars span {
            position: absolute;
            width: 2px;
            height: 2px;
            background: rgba(255, 255, 255, 0.6);
            border-radius: 50%;
            animation: twinkle 4s ease-in-out infinite alternate;
        }
        @keyframes twinkle {
            0% {
                opacity: 0.2;
                transform: scale(0.8);
            }
            100% {
                opacity: 1;
                transform: scale(1.2);
            }
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(240, 180, 41, 0.1);
            border: 1px solid rgba(240, 180, 41, 0.2);
            color: var(--accent-gold-light);
            margin-bottom: 28px;
            letter-spacing: 0.3px;
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero h1 {
            font-size: clamp(2.6rem, 7vw, 5rem);
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -1.5px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #f1f5f9 0%, #fcd34d 50%, #22d3ee 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: clamp(1.05rem, 2vw, 1.25rem);
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 16px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: 60px;
            font-size: 1.05rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--accent-gold), #d97706);
            color: #0c1222;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(240, 180, 41, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(240, 180, 41, 0.35);
            color: #0c1222;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: 60px;
            font-size: 1.05rem;
            font-weight: 600;
            background: var(--surface);
            color: var(--text-primary);
            border: 1px solid var(--border-subtle);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-secondary:hover {
            background: var(--surface-hover);
            border-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-3px);
            color: var(--text-primary);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 40px;
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid var(--border-subtle);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-gold);
            letter-spacing: -0.5px;
        }
        .hero-stat .label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 90vh;
                padding: 100px 0 60px;
            }
            .hero-stats {
                gap: 24px;
                padding-top: 32px;
                margin-top: 40px;
            }
            .hero-stat .num {
                font-size: 1.6rem;
            }
            .btn-primary,
            .btn-secondary {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
        }

        /* sections */
        .section {
            padding: 100px 0;
        }
        .section-dark {
            background: #0a0e1a;
        }
        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }
        .section-header h2 {
            font-size: clamp(2rem, 4vw, 2.8rem);
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }
        .section-header h2 i {
            color: var(--accent-gold);
            margin-right: 8px;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 580px;
            margin: 0 auto;
        }
        .section-header .subtitle-line {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-gold), var(--accent-cyan));
            border-radius: 3px;
            margin: 16px auto 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            .section-header {
                margin-bottom: 40px;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .section-header p {
                font-size: 0.95rem;
            }
        }

        /* features grid */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius);
            padding: 36px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-gold), var(--accent-cyan));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            background: var(--surface-hover);
            border-color: rgba(255, 255, 255, 0.12);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card .icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 20px;
            background: rgba(240, 180, 41, 0.1);
            color: var(--accent-gold);
        }
        .feature-card:nth-child(2) .icon {
            background: rgba(6, 182, 212, 0.1);
            color: var(--accent-cyan);
        }
        .feature-card:nth-child(3) .icon {
            background: rgba(240, 180, 41, 0.08);
            color: var(--accent-gold-light);
        }
        .feature-card h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .feature-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .feature-card {
                padding: 28px 20px;
            }
        }

        /* category cards */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            border-radius: var(--radius-lg);
            padding: 44px 36px;
            position: relative;
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            transition: var(--transition);
            background: linear-gradient(135deg, rgba(240, 180, 41, 0.04), rgba(6, 182, 212, 0.04));
        }
        .category-card::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            background: radial-gradient(ellipse at 80% 20%, rgba(240, 180, 41, 0.06), transparent 60%);
            pointer-events: none;
        }
        .category-card:hover {
            transform: translateY(-6px);
            border-color: rgba(240, 180, 41, 0.2);
            box-shadow: var(--shadow-card);
        }
        .category-card .cat-icon {
            font-size: 2.4rem;
            color: var(--accent-gold);
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }
        .category-card:nth-child(2) .cat-icon {
            color: var(--accent-cyan);
        }
        .category-card h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .category-card p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: 24px;
            max-width: 380px;
            position: relative;
            z-index: 1;
        }
        .category-card .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--accent-gold);
            position: relative;
            z-index: 1;
            transition: var(--transition);
        }
        .category-card:nth-child(2) .cat-link {
            color: var(--accent-cyan);
        }
        .category-card .cat-link i {
            transition: var(--transition);
        }
        .category-card .cat-link:hover i {
            transform: translateX(6px);
        }
        @media (max-width: 768px) {
            .category-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-card {
                padding: 32px 24px;
            }
            .category-card h3 {
                font-size: 1.35rem;
            }
        }

        /* cms posts list */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .post-card {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover {
            background: var(--surface-hover);
            border-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .post-card .post-cat {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(240, 180, 41, 0.12);
            color: var(--accent-gold-light);
            margin-bottom: 14px;
            align-self: flex-start;
            letter-spacing: 0.3px;
        }
        .post-card .post-title {
            font-size: 1.1rem;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 10px;
            flex: 1;
        }
        .post-card .post-title a {
            color: var(--text-primary);
            transition: var(--transition);
        }
        .post-card .post-title a:hover {
            color: var(--accent-gold);
        }
        .post-card .post-excerpt {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card .post-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-subtle);
            padding-top: 14px;
            margin-top: auto;
        }
        .post-card .post-meta i {
            margin-right: 4px;
            font-size: 0.7rem;
        }
        .posts-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px dashed var(--border-subtle);
        }
        .posts-empty i {
            font-size: 2.4rem;
            margin-bottom: 16px;
            opacity: 0.5;
        }
        .posts-empty p {
            font-size: 1.05rem;
        }
        @media (max-width: 1024px) {
            .posts-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .posts-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .post-card {
                padding: 20px 18px;
            }
            .post-card .post-title {
                font-size: 1rem;
            }
        }

        /* steps / workflow */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-card {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            background: var(--surface-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .step-card .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-gold), #d97706);
            color: #0c1222;
            font-size: 1.2rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
        }
        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .step-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .step-card {
                padding: 24px 18px;
            }
        }

        /* faq */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.1);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text-primary);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--accent-gold);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--accent-gold);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        @media (max-width: 768px) {
            .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-answer {
                font-size: 0.9rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* cta */
        .cta-section {
            background: linear-gradient(135deg, rgba(240, 180, 41, 0.06), rgba(6, 182, 212, 0.06));
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 0%, rgba(240, 180, 41, 0.08), transparent 60%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.4rem);
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 520px;
            margin: 0 auto 32px;
            position: relative;
            z-index: 1;
        }
        .cta-section .btn-primary {
            position: relative;
            z-index: 1;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 40px 24px;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
        }

        /* footer */
        .site-footer {
            background: #080b18;
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 1.4rem;
            margin-bottom: 14px;
            display: inline-flex;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            max-width: 320px;
            line-height: 1.8;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul a:hover {
            color: var(--accent-gold);
        }
        .footer-col ul a i {
            font-size: 0.65rem;
            opacity: 0.5;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 28px;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent-gold);
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--surface);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1rem;
            transition: var(--transition);
            border: 1px solid var(--border-subtle);
        }
        .footer-social a:hover {
            background: rgba(240, 180, 41, 0.1);
            color: var(--accent-gold);
            border-color: rgba(240, 180, 41, 0.2);
            transform: translateY(-2px);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer {
                padding: 40px 0 24px;
            }
        }

        /* utilities */
        .text-gold {
            color: var(--accent-gold);
        }
        .text-cyan {
            color: var(--accent-cyan);
        }
        .bg-surface {
            background: var(--surface);
        }
        .border-subtle {
            border-color: var(--border-subtle);
        }
        .gap-section {
            gap: 80px;
        }
        @media (max-width: 768px) {
            .gap-section {
                gap: 40px;
            }
        }

        /* focus & accessibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-gold);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
            background: var(--primary);
        }
        ::-webkit-scrollbar-track {
            background: var(--primary);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(255, 255, 255, 0.2);
        }

/* roulang page: article */
:root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --accent: #e94560;
            --accent-light: #ff6b81;
            --star-gold: #f5c518;
            --star-blue: #4fc3f7;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-card-hover: #222244;
            --text-primary: #f0f0f5;
            --text-secondary: #a0a0b8;
            --text-muted: #6c6c8a;
            --border-color: #2a2a4a;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
            --shadow-hover: 0 12px 48px rgba(233,69,96,0.15);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        * { margin:0; padding:0; box-sizing:border-box; }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 860px; margin: 0 auto; padding: 0 24px; }

        /* Header & Nav */
        .site-header {
            background: rgba(15,15,26,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0 24px;
        }
        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.5px;
        }
        .logo i { color: var(--star-gold); font-size: 1.5rem; }
        .logo span { background: linear-gradient(135deg, #fff 60%, var(--star-gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 7px;
            transition: var(--transition);
            position: relative;
        }
        .nav-links a i { font-size: 0.85rem; opacity: 0.7; }
        .nav-links a:hover { color: #fff; background: rgba(255,255,255,0.06); }
        .nav-links a.active { color: #fff; background: rgba(233,69,96,0.18); }
        .nav-links a.active::after { display: none; }
        .nav-cta { margin-left: 12px; }
        .btn-sm {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: #fff !important;
            box-shadow: 0 4px 20px rgba(233,69,96,0.3);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-sm:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(233,69,96,0.4); }
        .hamburger { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; padding: 8px; }

        /* Article Hero */
        .article-hero {
            padding: 60px 0 40px;
            background: linear-gradient(180deg, rgba(26,26,46,0.6) 0%, transparent 100%);
            border-bottom: 1px solid var(--border-color);
        }
        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .article-hero .breadcrumb a { color: var(--text-muted); }
        .article-hero .breadcrumb a:hover { color: var(--star-gold); }
        .article-hero .breadcrumb i { font-size: 0.7rem; color: var(--text-muted); }
        .article-hero .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(79,195,247,0.15);
            color: var(--star-blue);
            margin-bottom: 16px;
        }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            color: #fff;
            margin-bottom: 16px;
            max-width: 800px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .article-meta span { display: flex; align-items: center; gap: 6px; }
        .article-meta i { color: var(--text-muted); }

        /* Article Body */
        .article-body {
            padding: 48px 0 60px;
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-primary);
        }
        .article-content p { margin-bottom: 1.6em; }
        .article-content h2, .article-content h3 { color: #fff; margin-top: 2em; margin-bottom: 0.8em; font-weight: 700; }
        .article-content h2 { font-size: 1.6rem; }
        .article-content h3 { font-size: 1.25rem; }
        .article-content ul, .article-content ol { margin-bottom: 1.6em; padding-left: 1.5em; }
        .article-content li { margin-bottom: 0.4em; }
        .article-content a { color: var(--star-blue); border-bottom: 1px solid rgba(79,195,247,0.3); }
        .article-content a:hover { border-bottom-color: var(--star-blue); }
        .article-content blockquote {
            border-left: 4px solid var(--accent);
            padding: 16px 24px;
            margin: 1.6em 0;
            background: rgba(233,69,96,0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-content img { margin: 2em 0; border-radius: var(--radius); box-shadow: var(--shadow-card); }
        .article-content code {
            background: rgba(255,255,255,0.06);
            padding: 2px 10px;
            border-radius: 6px;
            font-size: 0.9em;
            color: var(--star-gold);
        }
        .article-content pre {
            background: rgba(15,15,26,0.8);
            padding: 20px 24px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 1.6em 0;
            border: 1px solid var(--border-color);
        }
        .article-content pre code { background: none; padding: 0; color: inherit; }

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .article-not-found i { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; display: block; }
        .article-not-found h2 { font-size: 1.8rem; color: #fff; margin-bottom: 12px; }
        .article-not-found p { color: var(--text-secondary); margin-bottom: 24px; }
        .article-not-found a { color: var(--star-blue); }

        /* Article Footer */
        .article-footer-bar {
            border-top: 1px solid var(--border-color);
            padding: 32px 0;
            margin-top: 40px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tags .tag {
            padding: 5px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            background: rgba(255,255,255,0.06);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: rgba(255,255,255,0.1); color: #fff; }
        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .article-share span { font-size: 0.85rem; color: var(--text-muted); }
        .article-share a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .article-share a:hover { background: var(--accent); color: #fff; border-color: var(--accent); transform: translateY(-2px); }

        /* Related Posts */
        .related-section {
            padding: 48px 0 64px;
            border-top: 1px solid var(--border-color);
        }
        .related-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-section h2 i { color: var(--star-gold); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 24px;
            transition: var(--transition);
        }
        .related-card:hover { background: var(--bg-card-hover); transform: translateY(-4px); box-shadow: var(--shadow-hover); }
        .related-card .cat { font-size: 0.75rem; color: var(--star-blue); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
        .related-card h3 { font-size: 1.05rem; font-weight: 600; color: #fff; margin-bottom: 8px; line-height: 1.4; }
        .related-card h3 a:hover { color: var(--accent-light); }
        .related-card p { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }
        .related-card .date { font-size: 0.78rem; color: var(--text-muted); margin-top: 12px; display: flex; align-items: center; gap: 5px; }

        /* Footer */
        .site-footer {
            background: rgba(15,15,26,0.9);
            border-top: 1px solid var(--border-color);
            padding: 56px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo { margin-bottom: 16px; }
        .footer-brand p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; max-width: 360px; }
        .footer-col h4 { font-size: 0.95rem; font-weight: 600; color: #fff; margin-bottom: 16px; }
        .footer-col ul { list-style: none; padding: 0; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { font-size: 0.85rem; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; transition: var(--transition); }
        .footer-col ul li a i { font-size: 0.65rem; opacity: 0.5; }
        .footer-col ul li a:hover { color: #fff; padding-left: 4px; }
        .footer-col ul li a:hover i { opacity: 1; color: var(--star-gold); }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 36px; height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            display: flex; align-items: center; justify-content: center;
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .footer-social a:hover { background: var(--accent); color: #fff; border-color: var(--accent); transform: translateY(-2px); }

        /* Mobile */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(15,15,26,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
                gap: 4px;
                z-index: 99;
            }
            .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-links a { width: 100%; padding: 12px 18px; font-size: 1rem; }
            .nav-cta { margin-left: 0; margin-top: 8px; width: 100%; }
            .nav-cta .btn-sm { width: 100%; justify-content: center; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-hero { padding: 36px 0 28px; }
            .article-body { padding: 32px 0 40px; }
            .article-content { font-size: 1rem; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-footer-bar { flex-direction: column; align-items: flex-start; }
            .article-meta { flex-direction: column; gap: 10px; }
        }
        @media (max-width: 520px) {
            .header-inner { height: 60px; }
            .logo { font-size: 1.2rem; }
            .container { padding: 0 16px; }
            .container-narrow { padding: 0 16px; }
            .article-hero h1 { font-size: 1.35rem; }
        }

/* roulang page: category1 */
:root {
            --primary: #4c6ef5;
            --primary-dark: #364fc7;
            --accent: #e64980;
            --bg-dark: #0b0d17;
            --bg-card: #13162b;
            --border-dark: #1e2140;
            --text-muted: #8b8fa3;
            --radius: 16px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 16px 48px rgba(76, 110, 245, 0.20);
            --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-dark);
            color: #eaeef5;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            transition: var(--transition);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 13, 23, 0.88);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid rgba(30, 33, 64, 0.6);
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1200px;
            padding: 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
        }

        .logo i {
            color: var(--primary);
            font-size: 1.7rem;
        }

        .logo span {
            background: linear-gradient(135deg, #fff 30%, #91a7ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #b0b8d1;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            position: relative;
        }

        .nav-links a i {
            font-size: 0.9rem;
            opacity: 0.7;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(76, 110, 245, 0.12);
        }

        .nav-links a.active {
            color: #fff;
            background: rgba(76, 110, 245, 0.18);
            box-shadow: inset 0 0 0 1px rgba(76, 110, 245, 0.25);
        }

        .nav-links a.active i {
            opacity: 1;
            color: var(--primary);
        }

        .nav-cta .btn-sm {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 8px 22px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(76, 110, 245, 0.30);
            transition: var(--transition);
        }

        .nav-cta .btn-sm:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(76, 110, 245, 0.45);
        }

        /* Mobile Toggle */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
        }

        /* Hero */
        .hero-category {
            padding: 80px 0 60px;
            background: radial-gradient(ellipse 80% 60% at 50% 20%, rgba(76, 110, 245, 0.08), transparent 70%);
            text-align: center;
            position: relative;
        }

        .hero-category::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(76, 110, 245, 0.25), transparent);
        }

        .hero-category h1 {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            background: linear-gradient(135deg, #fff 40%, #91a7ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 16px;
        }

        .hero-category p {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 32px;
        }

        .hero-category .badge-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }

        .hero-category .badge {
            background: rgba(76, 110, 245, 0.12);
            border: 1px solid rgba(76, 110, 245, 0.20);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            color: #b0c4ff;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* Section */
        .section {
            padding: 72px 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(76, 110, 245, 0.10);
            border: 1px solid rgba(76, 110, 245, 0.15);
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            color: #91a7ff;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 12px;
        }

        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 48px;
        }

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

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }

        .card:hover {
            border-color: rgba(76, 110, 245, 0.25);
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .card .icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 18px;
            background: rgba(76, 110, 245, 0.12);
            color: var(--primary);
        }

        .card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .card .tag {
            display: inline-block;
            background: rgba(76, 110, 245, 0.08);
            border: 1px solid rgba(76, 110, 245, 0.12);
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            color: #91a7ff;
            margin-top: 14px;
        }

        /* Guide List */
        .guide-item {
            display: flex;
            gap: 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: var(--radius);
            padding: 24px 28px;
            transition: var(--transition);
            align-items: flex-start;
        }

        .guide-item:hover {
            border-color: rgba(76, 110, 245, 0.20);
            transform: translateX(6px);
            box-shadow: var(--shadow-card);
        }

        .guide-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: rgba(76, 110, 245, 0.25);
            line-height: 1;
            min-width: 48px;
            font-feature-settings: "tnum";
        }

        .guide-item .content h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .guide-item .content p {
            color: var(--text-muted);
            font-size: 0.92rem;
        }

        .guide-item .content .meta {
            display: flex;
            gap: 16px;
            margin-top: 8px;
            font-size: 0.8rem;
            color: #6b7199;
        }

        .guide-item .content .meta i {
            margin-right: 4px;
            color: var(--primary);
        }

        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 36px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary), rgba(76, 110, 245, 0.05));
        }

        .timeline-item {
            position: relative;
            padding-bottom: 36px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 4px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg-dark);
            box-shadow: 0 0 0 3px rgba(76, 110, 245, 0.25);
        }

        .timeline-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .timeline-item p {
            color: var(--text-muted);
            font-size: 0.92rem;
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-dark);
            border-radius: 14px;
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(76, 110, 245, 0.15);
        }

        .faq-item .q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: #fff;
            font-size: 1.05rem;
        }

        .faq-item .q i {
            color: var(--primary);
            font-size: 1.1rem;
            transition: var(--transition);
        }

        .faq-item .a {
            margin-top: 12px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }

        .faq-item.open .a {
            display: block;
        }

        .faq-item.open .q i {
            transform: rotate(180deg);
        }

        /* CTA */
        .cta-block {
            background: linear-gradient(135deg, rgba(76, 110, 245, 0.08), rgba(230, 73, 128, 0.06));
            border: 1px solid rgba(76, 110, 245, 0.15);
            border-radius: 24px;
            padding: 56px 48px;
            text-align: center;
        }

        .cta-block h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-block p {
            color: var(--text-muted);
            max-width: 540px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }

        .cta-block .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            box-shadow: 0 6px 24px rgba(76, 110, 245, 0.30);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .cta-block .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(76, 110, 245, 0.45);
        }

        /* Footer */
        .site-footer {
            background: rgba(11, 13, 23, 0.9);
            border-top: 1px solid var(--border-dark);
            padding: 56px 0 32px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            font-size: 1.4rem;
            margin-bottom: 12px;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

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

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

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .footer-col ul li a i {
            font-size: 0.65rem;
            opacity: 0.5;
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid var(--border-dark);
            font-size: 0.85rem;
            color: #6b7199;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(76, 110, 245, 0.08);
            border: 1px solid var(--border-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 1rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: rgba(76, 110, 245, 0.18);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: 64px;
                padding: 0 16px;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(11, 13, 23, 0.98);
                backdrop-filter: blur(16px);
                padding: 20px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-dark);
                box-shadow: 0 20px 48px rgba(0, 0, 0, 0.6);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                border-radius: 12px;
                width: 100%;
            }
            .nav-cta {
                margin-top: 8px;
                width: 100%;
            }
            .nav-cta .btn-sm {
                justify-content: center;
                width: 100%;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-category h1 {
                font-size: 2rem;
            }
            .hero-category p {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .grid-3,
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .guide-item {
                flex-direction: column;
                gap: 12px;
                padding: 20px;
            }
            .guide-item .num {
                font-size: 1.6rem;
            }
            .cta-block {
                padding: 36px 24px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 16px;
                text-align: center;
            }
            .timeline {
                padding-left: 28px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-category {
                padding: 48px 0 40px;
            }
            .section {
                padding: 48px 0;
            }
            .card {
                padding: 24px 20px;
            }
            .hero-category h1 {
                font-size: 1.7rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1d4ed8;
            --primary-light: #3b82f6;
            --primary-dark: #1e3a8a;
            --accent: #16a34a;
            --accent-light: #22c55e;
            --bg-light: #ffffff;
            --bg-warm: #f8fafc;
            --bg-dark: #0f172a;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-light: #94a3b8;
            --border-color: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            background: var(--bg-light);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            transition: var(--transition);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        /* header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.3px;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--primary);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-links a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a i {
            font-size: 0.85rem;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(59, 130, 246, 0.08);
        }
        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(29, 78, 216, 0.3);
        }
        .nav-links a.active i {
            color: #fff;
        }
        .nav-cta .btn-sm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 22px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), #6366f1);
            box-shadow: 0 4px 16px rgba(29, 78, 216, 0.25);
            transition: var(--transition);
            margin-left: 8px;
        }
        .nav-cta .btn-sm:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(29, 78, 216, 0.35);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-xs);
        }
        .mobile-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                padding: 16px 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                gap: 4px;
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 18px;
                border-radius: var(--radius-sm);
            }
            .nav-cta {
                margin-top: 8px;
                width: 100%;
            }
            .nav-cta .btn-sm {
                width: 100%;
                justify-content: center;
                margin-left: 0;
            }
        }
        /* page hero */
        .page-hero {
            padding: 64px 0 56px;
            background: linear-gradient(135deg, #eff6ff 0%, #f0fdf4 50%, #f8fafc 100%);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.08), transparent 70%);
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(22, 163, 74, 0.06), transparent 70%);
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary), #6366f1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 16px;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 28px;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--primary);
            background: rgba(59, 130, 246, 0.1);
            border: 1px solid rgba(59, 130, 246, 0.2);
            margin-bottom: 20px;
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 40px 0 36px;
            }
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
        }
        /* section */
        .section {
            padding: 64px 0;
        }
        .section-alt {
            background: var(--bg-warm);
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: -0.3px;
        }
        .section-title p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto;
        }
        .section-title .overline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: var(--primary);
            margin-bottom: 8px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 40px 0;
            }
            .section-title h2 {
                font-size: 1.5rem;
            }
            .section-title p {
                font-size: 0.95rem;
            }
        }
        /* cards grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(59, 130, 246, 0.2);
        }
        .card .icon-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 16px;
            background: rgba(59, 130, 246, 0.1);
            color: var(--primary);
        }
        .card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .card p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.6;
        }
        .card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--primary);
        }
        .card .card-link i {
            font-size: 0.75rem;
            transition: var(--transition);
        }
        .card .card-link:hover i {
            transform: translateX(4px);
        }
        /* timeline */
        .timeline {
            position: relative;
            padding-left: 40px;
            max-width: 720px;
            margin: 0 auto;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 16px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary-light), var(--accent-light));
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding-bottom: 36px;
            padding-left: 28px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -30px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #fff;
            border: 3px solid var(--primary);
            box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
        }
        .timeline-item .tl-label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .timeline-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .timeline-item p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        @media (max-width: 640px) {
            .timeline {
                padding-left: 28px;
            }
            .timeline-item {
                padding-left: 20px;
            }
            .timeline-item::before {
                left: -22px;
                width: 12px;
                height: 12px;
            }
        }
        /* member cards */
        .member-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 20px;
        }
        .member-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 24px 16px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .member-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .member-card .avatar {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            margin: 0 auto 12px;
            background: linear-gradient(135deg, var(--primary-light), #a78bfa);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            font-weight: 600;
        }
        .member-card h4 {
            font-size: 1rem;
            font-weight: 600;
        }
        .member-card .role {
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 500;
            margin: 2px 0 6px;
        }
        .member-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 0.98rem;
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text-primary);
            gap: 12px;
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        /* CTA */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(135deg, var(--primary-dark), #1e3a8a, #312e81);
            color: #fff;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.85;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary-dark);
            background: #fff;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
            transition: var(--transition);
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
        }
        .cta-section .btn-cta i {
            font-size: 1rem;
        }
        @media (max-width: 768px) {
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-cta {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }
        /* footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand .logo span {
            background: none;
            -webkit-text-fill-color: #fff;
            color: #fff;
        }
        .footer-brand .logo i {
            -webkit-text-fill-color: #60a5fa;
            color: #60a5fa;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            opacity: 0.7;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .footer-col ul li a i {
            font-size: 0.6rem;
            opacity: 0.5;
        }
        .footer-col ul li a:hover {
            color: #60a5fa;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.82rem;
            opacity: 0.6;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: rgba(59, 130, 246, 0.2);
            color: #60a5fa;
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        /* posts list */
        .post-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 800px;
            margin: 0 auto;
        }
        .post-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 24px;
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .post-item:hover {
            border-color: rgba(59, 130, 246, 0.2);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .post-item .post-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            background: rgba(59, 130, 246, 0.08);
            color: var(--primary);
            flex-shrink: 0;
        }
        .post-item .post-content h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .post-item .post-content p {
            font-size: 0.88rem;
            color: var(--text-secondary);
        }
        .post-item .post-content .post-meta {
            font-size: 0.78rem;
            color: var(--text-light);
            margin-top: 4px;
            display: flex;
            gap: 12px;
        }
        @media (max-width: 640px) {
            .post-item {
                padding: 16px;
                gap: 14px;
                flex-wrap: wrap;
            }
            .post-item .post-icon {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
        }
        /* stats row */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 20px;
            max-width: 720px;
            margin: 0 auto;
        }
        .stat-card {
            text-align: center;
            padding: 24px 16px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .stat-card .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), #6366f1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        @media (max-width: 520px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-card .stat-num {
                font-size: 1.7rem;
            }
        }
        /* responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.2fr 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
            }
            .member-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 420px) {
            .member-grid {
                grid-template-columns: 1fr;
            }
            .page-hero h1 {
                font-size: 1.6rem;
            }
        }