/* roulang page: index */
:root {
            --primary: #0A1A2F;
            --secondary: #00D4AA;
            --accent: #FF6B35;
            --deepdark: #050F1A;
            --bg-start: #0B1D35;
            --bg-end: #0A1628;
            --text-light: #F0F4F8;
            --text-muted: #9CA3AF;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.15);
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --transition-base: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: linear-gradient(135deg, var(--bg-start), var(--bg-end));
            color: var(--text-light);
            line-height: 1.6;
            min-height: 100vh;
        }

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

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

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

        input:focus,
        textarea:focus {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding: 0 12px;
            }
        }

        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }

        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
        }

        .btn-glow {
            background: linear-gradient(135deg, var(--secondary), #00B894);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 20px rgba(0, 212, 170, 0.5);
            border: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-glow:hover {
            filter: brightness(1.2);
            box-shadow: 0 0 32px rgba(0, 212, 170, 0.7);
            transform: translateY(-2px);
        }

        .btn-glow:active {
            transform: scale(0.98);
        }

        .btn-outline {
            background: transparent;
            color: var(--secondary);
            border: 1.5px solid var(--secondary);
            border-radius: var(--radius-btn);
            padding: 10px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .btn-outline:hover {
            background: rgba(0, 212, 170, 0.12);
            box-shadow: 0 0 16px rgba(0, 212, 170, 0.25);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: scale(0.98);
        }

        .gradient-text {
            background: linear-gradient(135deg, var(--secondary), #00B894, var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 1rem;
            color: #fff;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.7;
        }

        .divider-gradient {
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--secondary), transparent);
            width: 80px;
            margin: 0.5rem 0 1.5rem 0;
        }

        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(0, 212, 170, 0.15);
            color: var(--secondary);
            border: 1px solid rgba(0, 212, 170, 0.25);
            transition: var(--transition-base);
        }

        .badge:hover {
            background: rgba(0, 212, 170, 0.25);
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--secondary), #00B894);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .nav-link {
            position: relative;
            font-weight: 500;
            padding: 6px 0;
            color: var(--text-muted);
            transition: var(--transition-base);
        }

        .nav-link:hover,
        .nav-link.active {
            color: #fff;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--secondary), #7C3AED);
            transition: width 0.3s ease;
        }

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

        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(5, 15, 26, 0.96);
            backdrop-filter: blur(20px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
        }

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

        .mobile-nav a {
            font-size: 1.5rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition-base);
            padding: 8px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--secondary);
        }

        .hamburger {
            cursor: pointer;
            width: 32px;
            height: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            z-index: 1001;
        }

        .hamburger span {
            display: block;
            width: 100%;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition-base);
        }

        .hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .faq-item .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 16px;
        }

        .faq-item.open .faq-content {
            max-height: 300px;
            padding: 16px;
        }

        .faq-item .faq-toggle {
            transition: transform 0.3s ease;
        }

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

        .form-input {
            width: 100%;
            background: rgba(255, 255, 255, 0.04);
            border: none;
            border-bottom: 2px solid rgba(0, 212, 170, 0.3);
            padding: 14px 16px 14px 40px;
            color: #fff;
            font-size: 0.95rem;
            border-radius: 4px 4px 0 0;
            transition: var(--transition-base);
        }

        .form-input:focus {
            border-bottom-color: var(--secondary);
            background: rgba(255, 255, 255, 0.07);
            box-shadow: 0 4px 20px rgba(0, 212, 170, 0.08);
        }

        .form-input::placeholder {
            color: rgba(255, 255, 255, 0.35);
        }

        .input-icon {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.3);
            font-size: 1rem;
            pointer-events: none;
        }

        .footer-link {
            color: var(--text-muted);
            transition: var(--transition-base);
            display: inline-block;
            padding: 4px 0;
        }

        .footer-link:hover {
            color: var(--secondary);
            transform: translateX(4px);
        }

        .hero-backpic {
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
        }

        .hero-backpic::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 26, 47, 0.85), rgba(10, 22, 40, 0.7));
            z-index: 1;
        }

        .hero-backpic>* {
            position: relative;
            z-index: 2;
        }

        .particle-grid {
            position: absolute;
            inset: 0;
            z-index: 1;
            background-image:
                radial-gradient(circle at 20% 50%, rgba(0, 212, 170, 0.06) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 50% 80%, rgba(0, 212, 170, 0.04) 0%, transparent 50%);
            pointer-events: none;
        }

        .cms-list-item {
            transition: var(--transition-base);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .cms-list-item:hover {
            background: rgba(255, 255, 255, 0.03);
        }

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

        .empty-state {
            opacity: 0.6;
            text-align: center;
            padding: 48px 24px;
        }

        .empty-state i {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            display: block;
        }

        @media (max-width: 1024px) {
            .section-title {
                font-size: 2rem;
            }
            .stat-number {
                font-size: 2.5rem;
            }
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.75rem;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .hero-backpic {
                min-height: 60vh;
            }
            .desktop-nav {
                display: none !important;
            }
            .mobile-toggle {
                display: flex !important;
            }
        }

        @media (min-width: 769px) {
            .mobile-toggle {
                display: none !important;
            }
        }

        @media (max-width: 640px) {
            .section-title {
                font-size: 1.5rem;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .container {
                padding: 0 12px;
            }
            .btn-glow {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
        }

        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(0, 212, 170, 0.4);
            }
            50% {
                box-shadow: 0 0 40px rgba(0, 212, 170, 0.7);
            }
        }

        .pulse-glow {
            animation: pulse-glow 2.5s ease-in-out infinite;
        }

        .cover-img {
            object-fit: cover;
            width: 100%;
            height: 100%;
            border-radius: 8px;
        }

        .backdrop-blur-sm {
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }

        .scrollbar-hide::-webkit-scrollbar {
            display: none;
        }
        .scrollbar-hide {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }

        input:-webkit-autofill,
        input:-webkit-autofill:hover,
        input:-webkit-autofill:focus {
            -webkit-text-fill-color: #fff;
            -webkit-box-shadow: 0 0 0px 1000px rgba(10, 26, 47, 0.9) inset !important;
            transition: background-color 5000s ease-in-out 0s;
        }

/* roulang page: article */
:root {
            --primary: #0A1A2F;
            --primary-light: #0F2440;
            --secondary: #00D4AA;
            --secondary-dark: #00B894;
            --accent: #FF6B35;
            --bg-dark: #0B1D35;
            --bg-darker: #0A1628;
            --deepdark: #050F1A;
            --text-primary: #F1F5F9;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.15);
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.5);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
        }
        /* Nav */
        .desktop-nav .nav-link {
            position: relative;
            color: var(--text-secondary);
            font-weight: 500;
            padding: 4px 0;
            transition: var(--transition);
        }
        .desktop-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--secondary), #8B5CF6);
            transition: var(--transition);
            border-radius: 2px;
        }
        .desktop-nav .nav-link:hover {
            color: #fff;
        }
        .desktop-nav .nav-link:hover::after {
            width: 100%;
        }
        .desktop-nav .nav-link.active {
            color: #fff;
        }
        .desktop-nav .nav-link.active::after {
            width: 100%;
        }
        .btn-glow {
            background: linear-gradient(135deg, var(--secondary) 0%, #00A3FF 100%);
            color: #fff;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 28px;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 12px rgba(0, 212, 170, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-glow:hover {
            filter: brightness(1.2);
            box-shadow: 0 0 24px rgba(0, 212, 170, 0.6);
            transform: translateY(-1px);
        }
        .btn-glow:active {
            transform: scale(0.98);
        }
        .pulse-glow {
            animation: pulseGlow 3s ease-in-out infinite;
        }
        @keyframes pulseGlow {
            0%,
            100% {
                box-shadow: 0 0 12px rgba(0, 212, 170, 0.3);
            }
            50% {
                box-shadow: 0 0 28px rgba(0, 212, 170, 0.7);
            }
        }
        .hamburger {
            width: 28px;
            height: 20px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            cursor: pointer;
            padding: 2px 0;
        }
        .hamburger span {
            display: block;
            height: 2.5px;
            background: #fff;
            border-radius: 4px;
            transition: var(--transition);
        }
        .mobile-toggle {
            display: none;
        }
        @media (max-width: 767px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-toggle {
                display: block;
            }
            .mobile-menu-open .desktop-nav {
                display: flex !important;
                flex-direction: column;
                position: fixed;
                top: 56px;
                left: 0;
                right: 0;
                background: rgba(10, 26, 47, 0.96);
                backdrop-filter: blur(20px);
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                z-index: 999;
            }
            .mobile-menu-open .desktop-nav .nav-link {
                font-size: 1rem;
                padding: 8px 0;
            }
        }
        /* Glass card */
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
        }
        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--secondary);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
            font-size: 0.75rem;
        }
        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 500;
        }
        /* Article content */
        .article-body {
            line-height: 1.8;
            font-size: 1rem;
            color: var(--text-primary);
        }
        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 2rem 0 1rem;
            color: #fff;
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin: 1.6rem 0 0.8rem;
            color: #E2E8F0;
            line-height: 1.4;
        }
        .article-body p {
            margin-bottom: 1.2rem;
            color: var(--text-secondary);
        }
        .article-body img {
            border-radius: var(--radius-card);
            margin: 1.5rem auto;
            max-width: 100%;
            height: auto;
            box-shadow: var(--shadow-card);
        }
        .article-body blockquote {
            border-left: 4px solid var(--secondary);
            background: rgba(0, 212, 170, 0.06);
            padding: 16px 20px;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-btn) var(--radius-btn) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body ul,
        .article-body ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
            color: var(--text-secondary);
        }
        .article-body li {
            margin-bottom: 0.4rem;
        }
        .article-body a {
            color: var(--secondary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: #fff;
        }
        /* Related card */
        .related-card {
            background: var(--glass-bg);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 16px;
            transition: var(--transition);
            cursor: pointer;
        }
        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 212, 170, 0.3);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
        }
        .related-card .thumb {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: 8px;
            background: var(--primary-light);
        }
        .related-card h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-top: 12px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 8px;
        }
        /* Floating button */
        .float-btn {
            position: fixed;
            bottom: 32px;
            right: 32px;
            z-index: 100;
            background: var(--secondary);
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 12px 22px;
            font-weight: 600;
            font-size: 0.875rem;
            box-shadow: 0 4px 20px rgba(0, 212, 170, 0.4);
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .float-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(0, 212, 170, 0.6);
        }
        @media (max-width: 640px) {
            .float-btn {
                bottom: 20px;
                right: 20px;
                padding: 10px 16px;
                font-size: 0.8rem;
            }
        }
        /* Footer link */
        .footer-link {
            color: var(--text-muted);
            transition: var(--transition);
            font-size: 0.875rem;
        }
        .footer-link:hover {
            color: var(--secondary);
        }
        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-darker);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--secondary);
            border-radius: 10px;
        }
        /* Mobile adjustments */
        @media (max-width: 520px) {
            .article-body {
                font-size: 0.95rem;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
        }
        /* Tag */
        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.7rem;
            font-weight: 500;
            background: rgba(0, 212, 170, 0.12);
            color: var(--secondary);
            border: 1px solid rgba(0, 212, 170, 0.2);
        }
        /* Empty state */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
        }
        .empty-state i {
            font-size: 3rem;
            opacity: 0.4;
            margin-bottom: 16px;
        }
        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 212, 170, 0.08) 0%, rgba(10, 26, 47, 0.9) 100%);
            border: 1px solid rgba(0, 212, 170, 0.15);
            border-radius: var(--radius-card);
            padding: 40px 32px;
            text-align: center;
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 28px 16px;
            }
        }
        /* form input */
        .form-input {
            background: transparent;
            border: none;
            border-bottom: 2px solid rgba(0, 212, 170, 0.3);
            padding: 12px 4px 12px 36px;
            color: #fff;
            font-size: 0.9rem;
            width: 100%;
            transition: var(--transition);
            outline: none;
        }
        .form-input:focus {
            border-bottom-color: var(--secondary);
            box-shadow: 0 4px 20px rgba(0, 212, 170, 0.1);
        }
        .form-input::placeholder {
            color: var(--text-muted);
        }
        .input-icon {
            position: absolute;
            left: 4px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 0.9rem;
        }

/* roulang page: category1 */
:root {
            --primary: #0A1A2F;
            --primary-light: #0F2A4A;
            --secondary: #00D4AA;
            --secondary-dark: #00B894;
            --accent: #FF6B35;
            --deepdark: #050F1A;
            --bg-start: #0B1D35;
            --bg-end: #0A1628;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.15);
            --text-primary: #F0F4F8;
            --text-secondary: #B0C4DE;
            --text-muted: #6B7F99;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.5);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            background: linear-gradient(135deg, var(--bg-start) 0%, var(--bg-end) 100%);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
        }

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (min-width: 768px) {
            .container {
                padding: 0 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 40px;
            }
        }

        /* Navigation */
        .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            padding: 4px 0;
            position: relative;
            transition: var(--transition);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--secondary), #8B5CF6);
            transition: var(--transition);
            border-radius: 2px;
        }

        .nav-link:hover {
            color: #fff;
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: #fff;
        }

        .nav-link.active::after {
            width: 100%;
        }

        .btn-glow {
            background: linear-gradient(135deg, var(--secondary) 0%, #00B894 100%);
            color: #0A1A2F;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 12px rgba(0, 212, 170, 0.4);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .btn-glow:hover {
            filter: brightness(1.2);
            box-shadow: 0 0 24px rgba(0, 212, 170, 0.7);
            transform: translateY(-1px);
        }

        .btn-glow:active {
            transform: scale(0.98);
        }

        .btn-outline {
            background: transparent;
            color: var(--secondary);
            border: 1.5px solid var(--secondary);
            border-radius: var(--radius-btn);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .btn-outline:hover {
            background: rgba(0, 212, 170, 0.1);
            box-shadow: 0 0 16px rgba(0, 212, 170, 0.3);
        }

        .pulse-glow {
            animation: pulseGlow 3s ease-in-out infinite;
        }

        @keyframes pulseGlow {
            0%,
            100% {
                box-shadow: 0 0 12px rgba(0, 212, 170, 0.4);
            }
            50% {
                box-shadow: 0 0 28px rgba(0, 212, 170, 0.8);
            }
        }

        /* Mobile Hamburger */
        .hamburger {
            width: 28px;
            height: 20px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            cursor: pointer;
            position: relative;
            z-index: 1001;
        }

        .hamburger span {
            display: block;
            width: 100%;
            height: 2.5px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition);
            transform-origin: center;
        }

        .hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 7px);
        }

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

        .hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -7px);
        }

        .mobile-toggle {
            display: none;
        }

        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(5, 15, 26, 0.97);
            backdrop-filter: blur(20px);
            z-index: 999;
            display: none;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            padding: 80px 24px 40px;
        }

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

        .mobile-menu a {
            font-size: 1.25rem;
            color: var(--text-secondary);
            font-weight: 500;
            padding: 10px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            width: 100%;
            max-width: 300px;
            text-align: center;
            transition: var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: #fff;
            border-bottom-color: var(--secondary);
        }

        @media (max-width: 767px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-toggle {
                display: flex;
                align-items: center;
            }
            .mobile-toggle .hamburger {
                display: flex;
            }
        }

        @media (min-width: 768px) {
            .mobile-toggle {
                display: none !important;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        /* Glass Card */
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
        }

        /* Section */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }

        .section-sub {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 640px;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 2.5rem;
            }
        }

        /* Feature Card */
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.75rem;
            background: linear-gradient(135deg, rgba(0, 212, 170, 0.2), rgba(0, 212, 170, 0.05));
            border: 1px solid rgba(0, 212, 170, 0.2);
            transition: var(--transition);
        }

        .glass-card:hover .feature-icon {
            filter: drop-shadow(0 0 12px rgba(0, 212, 170, 0.6));
        }

        /* Step */
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--secondary), #00B894);
            color: #0A1A2F;
            flex-shrink: 0;
        }

        .step-line {
            width: 2px;
            flex-grow: 1;
            background: linear-gradient(180deg, var(--secondary), rgba(0, 212, 170, 0.1));
            margin: 4px auto;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 16px 0;
            cursor: pointer;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            color: #fff;
            transition: var(--transition);
        }

        .faq-question .icon {
            font-size: 1.25rem;
            color: var(--secondary);
            transition: var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-top: 12px;
        }

        /* Footer */
        .footer-link {
            color: var(--text-muted);
            transition: var(--transition);
            font-size: 0.9rem;
        }

        .footer-link:hover {
            color: var(--secondary);
            padding-left: 4px;
        }

        /* Form */
        .form-input {
            width: 100%;
            background: rgba(255, 255, 255, 0.04);
            border: none;
            border-bottom: 2px solid rgba(0, 212, 170, 0.3);
            padding: 14px 16px 14px 40px;
            color: #fff;
            font-size: 0.95rem;
            border-radius: 4px 4px 0 0;
            transition: var(--transition);
            outline: none;
        }

        .form-input:focus {
            border-bottom-color: var(--secondary);
            box-shadow: 0 4px 20px rgba(0, 212, 170, 0.15);
            background: rgba(255, 255, 255, 0.06);
        }

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

        .input-icon {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 0.9rem;
            pointer-events: none;
        }

        /* Badge */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(0, 212, 170, 0.15);
            color: var(--secondary);
            border: 1px solid rgba(0, 212, 170, 0.25);
        }

        .badge-accent {
            background: rgba(255, 107, 53, 0.15);
            color: var(--accent);
            border-color: rgba(255, 107, 53, 0.25);
        }

        /* Image overlay */
        .img-overlay {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-card);
        }

        .img-overlay::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(10, 26, 47, 0.7) 0%, transparent 70%);
            pointer-events: none;
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--deepdark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--secondary);
            border-radius: 3px;
        }

        /* Responsive tweaks */
        @media (max-width: 639px) {
            .section-title {
                font-size: 1.6rem;
            }
            .step-number {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }

        /* Cover image fallback */
        .cover-bg {
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        /* Grid gap */
        .grid-gap {
            gap: 24px;
        }
        @media (min-width: 768px) {
            .grid-gap {
                gap: 32px;
            }
        }

        /* CTA section */
        .cta-gradient {
            background: linear-gradient(135deg, rgba(0, 212, 170, 0.08) 0%, rgba(10, 26, 47, 0.9) 100%);
            border: 1px solid rgba(0, 212, 170, 0.15);
        }

        /* Feature list */
        .feature-list li {
            padding: 6px 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .feature-list li i {
            color: var(--secondary);
            margin-top: 4px;
            flex-shrink: 0;
        }

/* roulang page: category2 */
:root {
            --primary: #0A1A2F;
            --accent: #00D4AA;
            --cta: #FF6B35;
            --deepdark: #050F1A;
            --bg-start: #0B1D35;
            --bg-end: #0A1628;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.15);
            --text-light: #f0f4f8;
            --text-muted: #94a3b8;
            --radius-card: 12px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: linear-gradient(145deg, var(--bg-start), var(--bg-end));
            color: var(--text-light);
            line-height: 1.6;
            min-height: 100vh;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* glass card */
        .glass {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }
        .glass-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
            border-color: rgba(0, 212, 170, 0.3);
        }
        /* button glow */
        .btn-glow {
            background: linear-gradient(135deg, #00D4AA, #00A88E);
            border: none;
            border-radius: 8px;
            color: #0A1A2F;
            font-weight: 600;
            padding: 10px 24px;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 12px rgba(0, 212, 170, 0.4);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-glow:hover {
            filter: brightness(1.2);
            box-shadow: 0 0 24px rgba(0, 212, 170, 0.6);
        }
        .btn-glow:active {
            transform: scale(0.98);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--glass-border);
            border-radius: 8px;
            color: var(--text-light);
            padding: 10px 24px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: 0 0 12px rgba(0, 212, 170, 0.15);
        }
        /* nav link */
        .nav-link {
            position: relative;
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
            padding-bottom: 4px;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), #7c3aed);
            transition: width 0.3s ease;
            border-radius: 2px;
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: #fff;
        }
        .nav-link.active::after {
            width: 100%;
            background: linear-gradient(90deg, var(--accent), #7c3aed);
        }
        .footer-link {
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-link:hover {
            color: var(--accent);
        }
        /* hamburger */
        .hamburger {
            width: 28px;
            height: 20px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            cursor: pointer;
        }
        .hamburger span {
            display: block;
            height: 2.5px;
            background: rgba(255, 255, 255, 0.8);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(6px, -6px);
        }
        /* mobile menu */
        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(5, 15, 26, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.35s ease;
        }
        .mobile-menu.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-menu a {
            font-size: 1.5rem;
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
            transition: var(--transition);
            border-bottom: 1px solid transparent;
            padding-bottom: 4px;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }
        .mobile-toggle {
            display: none;
        }
        @media (max-width: 767px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-toggle {
                display: flex;
                align-items: center;
            }
            .container {
                padding: 0 16px;
            }
        }
        /* pulse glow */
        .pulse-glow {
            animation: pulseGlow 2.5s infinite ease-in-out;
        }
        @keyframes pulseGlow {
            0%,
            100% {
                box-shadow: 0 0 12px rgba(0, 212, 170, 0.4);
            }
            50% {
                box-shadow: 0 0 28px rgba(0, 212, 170, 0.7);
            }
        }
        /* faq */
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary {
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            padding: 16px 0;
            font-weight: 500;
            color: #fff;
        }
        .faq-item .faq-icon {
            font-size: 1.25rem;
            transition: transform 0.3s ease;
            color: var(--accent);
            flex-shrink: 0;
        }
        .faq-item[open] .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item .faq-content {
            padding: 0 0 16px 0;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-divider {
            border: none;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        /* stats number gradient */
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            background: linear-gradient(135deg, #00D4AA, #0A1A2F);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        @media (max-width: 640px) {
            .stat-number {
                font-size: 2.2rem;
            }
        }
        /* case card image overlay */
        .case-card-img {
            position: relative;
            overflow: hidden;
            border-radius: 12px 12px 0 0;
            height: 200px;
            object-fit: cover;
            width: 100%;
        }
        .case-card-img-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, rgba(10, 26, 47, 0.2) 0%, rgba(10, 26, 47, 0.7) 100%);
            pointer-events: none;
        }
        /* responsive grid helper */
        .grid-2col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .grid-3col {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 24px;
        }
        @media (max-width: 1023px) {
            .grid-3col {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .grid-2col,
            .grid-3col {
                grid-template-columns: 1fr;
            }
        }
        /* section spacing */
        .section-pad {
            padding: 80px 0;
        }
        @media (max-width: 767px) {
            .section-pad {
                padding: 48px 0;
            }
        }
        /* form input */
        .form-input {
            background: transparent;
            border: none;
            border-bottom: 2px solid rgba(0, 212, 170, 0.3);
            padding: 12px 16px 12px 40px;
            color: #fff;
            font-size: 0.95rem;
            width: 100%;
            transition: var(--transition);
            border-radius: 0;
        }
        .form-input:focus {
            outline: none;
            border-bottom-color: var(--accent);
            box-shadow: 0 4px 16px rgba(0, 212, 170, 0.15);
        }
        .form-input::placeholder {
            color: rgba(255, 255, 255, 0.3);
        }
        .input-icon {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, 0.25);
            font-size: 1rem;
            pointer-events: none;
        }
        /* breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 16px 0;
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.15);
        }
        .breadcrumb .current {
            color: var(--accent);
        }
        /* tag/badge */
        .badge {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 500;
            background: rgba(0, 212, 170, 0.15);
            color: var(--accent);
            border: 1px solid rgba(0, 212, 170, 0.2);
        }
        /* hero image overlay */
        .hero-overlay {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        .hero-overlay::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(10, 26, 47, 0.85) 40%, rgba(10, 22, 40, 0.6) 100%);
            pointer-events: none;
        }
        /* step connector */
        .step-connector {
            position: absolute;
            top: 40px;
            left: 50%;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), rgba(0, 212, 170, 0.1));
            transform: translateX(-50%);
            z-index: 0;
        }
        @media (max-width: 767px) {
            .step-connector {
                display: none;
            }
        }
        .step-item {
            position: relative;
            z-index: 1;
        }
        .step-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            background: linear-gradient(135deg, var(--accent), #00A88E);
            color: #0A1A2F;
            margin: 0 auto 12px;
            box-shadow: 0 0 20px rgba(0, 212, 170, 0.3);
        }
        /* scrollbar */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--deepdark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--accent);
            border-radius: 4px;
        }
        /* structured data invisible */
        .ld-hidden {
            display: none;
        }

/* roulang page: category3 */
:root {
            --primary: #0A1A2F;
            --accent: #00D4AA;
            --accent2: #FF6B35;
            --deepdark: #050F1A;
            --bg1: #0B1D35;
            --bg2: #0A1628;
            --text: #E8EDF5;
            --text2: #94A3B8;
            --border: rgba(255, 255, 255, 0.08);
            --card-bg: rgba(255, 255, 255, 0.04);
            --radius: 12px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: linear-gradient(145deg, var(--bg1), var(--bg2));
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width:768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (min-width:1024px) {
            .container {
                padding-left: 40px;
                padding-right: 40px;
            }
        }

        /* Glass card */
        .glass-card {
            background: var(--card-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .glass-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
        }

        /* Button glow */
        .btn-glow {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--accent), #00b894);
            color: #0A1A2F;
            font-weight: 600;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            transition: all 0.2s ease;
            box-shadow: 0 0 12px rgba(0, 212, 170, 0.35);
            text-decoration: none;
            padding: 10px 24px;
            font-size: 0.95rem;
        }
        .btn-glow:hover {
            filter: brightness(1.2);
            box-shadow: 0 0 24px rgba(0, 212, 170, 0.55);
            transform: scale(1.02);
        }
        .btn-glow:active {
            transform: scale(0.98);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: transparent;
            color: var(--accent);
            font-weight: 600;
            border-radius: 8px;
            border: 1.5px solid rgba(0, 212, 170, 0.4);
            cursor: pointer;
            transition: all 0.2s ease;
            text-decoration: none;
            padding: 10px 24px;
            font-size: 0.95rem;
        }
        .btn-outline:hover {
            background: rgba(0, 212, 170, 0.08);
            border-color: var(--accent);
            box-shadow: 0 0 16px rgba(0, 212, 170, 0.15);
        }

        /* Nav */
        .desktop-nav .nav-link {
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            padding-bottom: 4px;
            border-bottom: 2px solid transparent;
            transition: color 0.2s, border-color 0.2s;
            font-weight: 500;
        }
        .desktop-nav .nav-link:hover {
            color: #fff;
        }
        .desktop-nav .nav-link.active {
            color: #fff;
            border-bottom-color: var(--accent);
            background: linear-gradient(90deg, var(--accent), #8B5CF6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            border-bottom: 2px solid var(--accent);
        }
        .footer-link {
            color: rgba(255, 255, 255, 0.45);
            text-decoration: none;
            transition: color 0.2s;
        }
        .footer-link:hover {
            color: var(--accent);
        }

        /* Hamburger */
        .hamburger {
            width: 28px;
            height: 20px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            cursor: pointer;
        }
        .hamburger span {
            display: block;
            height: 2.5px;
            background: #fff;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }

        /* Mobile nav */
        .mobile-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(5, 15, 26, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 32px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.35s ease;
        }
        .mobile-nav.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-nav a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.4rem;
            font-weight: 500;
            text-decoration: none;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding-bottom: 8px;
            transition: color 0.2s;
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--accent);
        }
        .mobile-nav .close-btn {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 2rem;
            color: #fff;
            cursor: pointer;
        }
        @media (min-width:769px) {
            .mobile-toggle {
                display: none;
            }
            .mobile-nav {
                display: none;
            }
        }
        @media (max-width:768px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-toggle {
                display: flex;
                align-items: center;
            }
            .btn-glow {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
        }

        /* Section spacing */
        section {
            padding: 64px 0;
        }
        @media (min-width:768px) {
            section {
                padding: 80px 0;
            }
        }
        @media (min-width:1024px) {
            section {
                padding: 100px 0;
            }
        }

        /* Hero */
        .hero-section {
            min-height: 70vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            padding-top: 80px;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 26, 47, 0.85) 40%, rgba(10, 22, 40, 0.7) 80%);
            z-index: 1;
        }
        .hero-section>* {
            position: relative;
            z-index: 2;
        }
        .hero-title {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.2;
        }
        @media (min-width:768px) {
            .hero-title {
                font-size: 3rem;
            }
        }
        @media (min-width:1024px) {
            .hero-title {
                font-size: 3.6rem;
            }
        }

        /* Badge */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 212, 170, 0.12);
            border: 1px solid rgba(0, 212, 170, 0.25);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 40px;
            letter-spacing: 0.3px;
        }

        /* Step line */
        .step-line {
            width: 2px;
            height: 40px;
            background: linear-gradient(to bottom, var(--accent), transparent);
            margin: 0 auto;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0;
            cursor: pointer;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 500;
            font-size: 1rem;
            color: #fff;
            user-select: none;
        }
        .faq-question .icon {
            font-size: 1.2rem;
            color: var(--accent);
            transition: transform 0.3s;
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item.open .faq-question .icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            color: var(--text2);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 12px;
        }

        /* Pulse glow */
        .pulse-glow {
            animation: pulseGlow 2.5s infinite;
        }
        @keyframes pulseGlow {
            0%,
            100% {
                box-shadow: 0 0 12px rgba(0, 212, 170, 0.35);
            }
            50% {
                box-shadow: 0 0 28px rgba(0, 212, 170, 0.65);
            }
        }

        /* Service card icon */
        .s-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            background: linear-gradient(135deg, rgba(0, 212, 170, 0.15), rgba(139, 92, 246, 0.1));
            border: 1px solid rgba(0, 212, 170, 0.15);
            transition: filter 0.3s;
        }
        .glass-card:hover .s-icon {
            filter: drop-shadow(0 0 8px rgba(0, 212, 170, 0.5));
        }

        /* Promise card */
        .promise-card {
            background: var(--card-bg);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            transition: transform 0.25s, border-color 0.25s;
        }
        .promise-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 212, 170, 0.2);
        }
        .promise-card .num {
            font-size: 2.8rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent), #8B5CF6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* Timeline */
        .timeline-item {
            display: flex;
            gap: 20px;
            padding-bottom: 36px;
            position: relative;
        }
        .timeline-item:not(:last-child)::before {
            content: '';
            position: absolute;
            left: 19px;
            top: 44px;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, rgba(0, 212, 170, 0.3), transparent);
        }
        .timeline-dot {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            background: rgba(0, 212, 170, 0.12);
            border: 1.5px solid rgba(0, 212, 170, 0.3);
            color: var(--accent);
        }

        /* Responsive grid helpers */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        @media (min-width:640px) {
            .grid-2 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width:1024px) {
            .grid-3 {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        /* Contact form */
        .form-input {
            width: 100%;
            background: transparent;
            border: none;
            border-bottom: 2px solid rgba(0, 212, 170, 0.25);
            padding: 14px 12px 10px 36px;
            color: #fff;
            font-size: 0.95rem;
            outline: none;
            transition: border-color 0.25s, box-shadow 0.25s;
        }
        .form-input:focus {
            border-bottom-color: var(--accent);
            box-shadow: 0 4px 12px rgba(0, 212, 170, 0.08);
        }
        .form-input::placeholder {
            color: rgba(255, 255, 255, 0.3);
        }
        .input-wrap {
            position: relative;
        }
        .input-wrap .input-icon {
            position: absolute;
            left: 4px;
            top: 14px;
            color: rgba(255, 255, 255, 0.25);
            font-size: 1rem;
        }

        /* Cover image */
        .cover-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 10px;
        }
        @media (min-width:768px) {
            .cover-img {
                height: 260px;
            }
        }

        /* empty state for latest info — not used here but kept for consistency */

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--deepdark);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(0, 212, 170, 0.25);
            border-radius: 10px;
        }

        /* JSON-LD hidden */
        .hidden-ld {
            display: none;
        }