/* roulang page: index */
:root {
            --gold: #D4A853;
            --gold-light: #E8C37A;
            --gold-dark: #B8893D;
            --bg-primary: #0A0E14;
            --bg-card: #111820;
            --bg-card-hover: #161F2B;
            --text-primary: #E8EDF2;
            --text-secondary: #94A3B8;
            --text-muted: #5B6B7F;
            --border-subtle: rgba(255,255,255,0.08);
            --border-strong: rgba(255,255,255,0.15);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.3);
            --shadow-hover: 0 8px 30px rgba(0,0,0,0.5);
            --shadow-gold: 0 0 0 1px rgba(212,168,83,0.3);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            --transition-fast: all 0.2s ease;
            --transition-normal: all 0.3s ease;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-fast);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--gold-light);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            background: var(--gold);
            color: #0A0E14;
            font-weight: 600;
            font-size: 15px;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            transition: var(--transition-fast);
            box-shadow: 0 2px 8px rgba(212,168,83,0.3);
            gap: 8px;
        }
        .btn-primary:hover {
            background: var(--gold-light);
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(212,168,83,0.4);
        }
        .btn-primary:active {
            background: var(--gold-dark);
            transform: translateY(0);
            box-shadow: 0 2px 4px rgba(212,168,83,0.2);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            background: transparent;
            color: #fff;
            font-weight: 500;
            font-size: 15px;
            border-radius: 8px;
            border: 1px solid rgba(255,255,255,0.2);
            cursor: pointer;
            transition: var(--transition-fast);
            gap: 8px;
        }
        .btn-secondary:hover {
            border-color: var(--gold);
            color: var(--gold);
            background: rgba(212,168,83,0.08);
        }
        .btn-secondary:active {
            border-color: var(--gold-dark);
            color: var(--gold-dark);
            transform: translateY(0);
        }
        .text-link {
            color: var(--gold);
            font-size: 14px;
            font-weight: 500;
            position: relative;
            padding-bottom: 2px;
            background-image: linear-gradient(var(--gold), var(--gold));
            background-position: 0 100%;
            background-repeat: no-repeat;
            background-size: 100% 1px;
            transition: var(--transition-fast);
        }
        .text-link:hover {
            background-size: 0 1px;
            color: var(--gold-light);
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.5px;
            margin-bottom: 0.5em;
        }
        .section-subtitle {
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 40px;
        }
        .glass {
            background: rgba(10, 14, 20, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .category-badge {
            display: inline-block;
            padding: 3px 12px;
            background: rgba(212,168,83,0.12);
            color: var(--gold);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.5px;
        }
        .card-base {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            transition: var(--transition-normal);
        }
        .card-base:hover {
            background: var(--bg-card-hover);
            border-color: rgba(212,168,83,0.4);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .input-custom {
            width: 100%;
            padding: 12px 14px;
            background: var(--bg-primary);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: 8px;
            color: var(--text-primary);
            font-size: 14px;
            transition: var(--transition-fast);
        }
        .input-custom:focus {
            outline: none;
            border-color: var(--gold);
            box-shadow: 0 0 0 3px rgba(212,168,83,0.15);
        }
        .input-custom::placeholder {
            color: var(--text-muted);
        }
        .form-label {
            display: block;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 6px;
            font-weight: 500;
        }
        .tabular-nums {
            font-feature-settings: "tnum";
            font-variant-numeric: tabular-nums;
        }
        .gold-gradient-text {
            background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 50%, var(--gold-dark) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            color: transparent;
        }
        .hero-backdrop {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .hero-backdrop::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at top right, rgba(212,168,83,0.15), transparent 60%);
        }
        .hero-backdrop::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10,14,20,0.75) 0%, #0A0E14 100%);
        }
        .timeline-vertical::before {
            content: '';
            position: absolute;
            left: 19px;
            top: 0;
            bottom: 0;
            width: 1px;
            background: linear-gradient(180deg, rgba(212,168,83,0.3), rgba(255,255,255,0.05));
        }
        .tab-active {
            color: var(--gold);
            border-bottom: 2px solid var(--gold);
        }
        .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 10px;
            transition: var(--transition-fast);
        }
        .accordion-item:hover {
            border-color: rgba(212,168,83,0.3);
        }
        .accordion-item.active {
            border-color: rgba(212,168,83,0.4);
        }
        .accordion-icon {
            transition: transform 0.3s ease;
        }
        .accordion-item.active .accordion-icon {
            transform: rotate(45deg);
        }
        .footer-link {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 2.2;
            transition: var(--transition-fast);
        }
        .footer-link:hover {
            color: var(--gold);
        }
        @media (max-width: 1023px) {
            .container-custom {
                padding-left: 20px;
                padding-right: 20px;
            }
            .section-title {
                font-size: 28px;
            }
            .menu-desktop {
                display: none !important;
            }
            .mobile-menu-btn {
                display: flex !important;
            }
        }
        @media (max-width: 767px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-title {
                font-size: 24px;
            }
            .section-subtitle {
                font-size: 14px;
                margin-bottom: 24px;
            }
            .hero-content {
                padding-top: 90px;
            }
            .feature-grid {
                grid-template-columns: 1fr !important;
            }
            .scenario-grid {
                grid-template-columns: 1fr !important;
            }
            .price-grid {
                grid-template-columns: 1fr !important;
            }
            .case-grid {
                grid-template-columns: 1fr !important;
            }
            .info-row {
                grid-template-columns: 1fr !important;
            }
            .cta-btn-group {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
            .footer-columns {
                grid-template-columns: 1fr 1fr !important;
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            .footer-columns {
                grid-template-columns: 1fr !important;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #D4A853;
            --primary-light: #E8C37A;
            --primary-dark: #B8893D;
            --bg: #0A0E14;
            --bg-card: #111820;
            --bg-hover: #161F2B;
            --text: #E8EDF2;
            --text-secondary: #94A3B8;
            --text-muted: #5B6B7F;
            --border: rgba(255,255,255,0.06);
            --border-light: rgba(255,255,255,0.1);
            --shadow-card: 0 4px 20px rgba(0,0,0,0.3);
            --shadow-hover: 0 8px 30px rgba(0,0,0,0.5);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            font-feature-settings: "tnum";
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .glass {
            background: rgba(10, 14, 20, 0.6) !important;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .glass.scrolled {
            background: #0A0E14 !important;
            box-shadow: 0 4px 20px rgba(0,0,0,0.4);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #D4A853, #B8893D);
            color: #0A0E14;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: 8px;
            transition: all 0.25s ease;
            box-shadow: 0 2px 8px rgba(212,168,83,0.3);
            text-decoration: none;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, #E8C37A, #D4A853);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212,168,83,0.4);
            color: #0A0E14;
        }
        .btn-primary:active {
            background: #B8893D;
            transform: translateY(1px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: #E8EDF2;
            border: 1px solid rgba(255,255,255,0.2);
            padding: 12px 24px;
            border-radius: 8px;
            transition: all 0.25s ease;
            text-decoration: none;
            cursor: pointer;
        }
        .btn-secondary:hover {
            border-color: #D4A853;
            color: #D4A853;
            background: rgba(212,168,83,0.08);
        }
        .footer-link {
            color: #5B6B7F;
            font-size: 14px;
            transition: color 0.2s ease;
            text-decoration: none;
            display: inline-block;
            padding: 3px 0;
        }
        .footer-link:hover {
            color: #D4A853;
        }
        .nav-link {
            position: relative;
            text-decoration: none;
            padding-bottom: 4px;
        }
        .nav-link.active {
            color: #D4A853 !important;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: #D4A853;
            border-radius: 2px;
        }
        .info-card {
            background: #111820;
            border: 1px solid var(--border);
            border-radius: 16px;
            transition: all 0.3s ease;
        }
        .info-card:hover {
            border-color: rgba(212,168,83,0.5);
            box-shadow: 0 8px 30px rgba(0,0,0,0.5);
            transform: translateY(-2px);
        }
        .sidebar-card {
            background: #111820;
            border: 1px solid var(--border);
            border-radius: 12px;
            transition: border-color 0.2s;
        }
        .sidebar-card:hover {
            border-color: rgba(212,168,83,0.3);
        }
        .tag-pill {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            background: rgba(212,168,83,0.1);
            color: #D4A853;
            border: 1px solid rgba(212,168,83,0.2);
            transition: all 0.2s ease;
            text-decoration: none;
        }
        .tag-pill:hover {
            background: rgba(212,168,83,0.2);
            color: #E8C37A;
        }
        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: #D4A853;
            line-height: 1.2;
            font-feature-settings: "tnum";
        }
        .faq-item {
            background: #111820;
            border: 1px solid var(--border);
            border-radius: 10px;
            transition: border-color 0.2s;
        }
        .faq-item:hover {
            border-color: rgba(212,168,83,0.3);
        }
        .faq-item.active {
            border-color: rgba(212,168,83,0.5);
        }
        .faq-question {
            cursor: pointer;
            user-select: none;
        }
        .faq-icon {
            transition: transform 0.3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: #D4A853;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 20px 20px 48px;
            color: #94A3B8;
            font-size: 14px;
            line-height: 1.8;
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-up {
            animation: fadeInUp 0.6s ease both;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid #E8C37A;
            outline-offset: 2px;
        }
        @media (max-width: 1023px) {
            .menu-desktop {
                display: none;
            }
            .mobile-menu-btn {
                display: flex !important;
            }
        }
        @media (min-width: 1024px) {
            .mobile-menu {
                display: none !important;
            }
        }
        @media (max-width: 767px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .footer-columns {
                grid-template-columns: 1fr 1fr !important;
                gap: 24px !important;
            }
            .stat-number {
                font-size: 28px;
            }
        }
        @media (max-width: 520px) {
            .footer-columns {
                grid-template-columns: 1fr !important;
            }
        }
        .content-card {
            background: #111820;
            border: 1px solid var(--border);
            border-radius: 16px;
            transition: all 0.3s ease;
            overflow: hidden;
        }
        .content-card:hover {
            border-color: rgba(212,168,83,0.5);
            box-shadow: 0 8px 30px rgba(0,0,0,0.5);
            transform: translateY(-3px);
        }
        .content-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .anchor-link {
            display: block;
            color: #94A3B8;
            text-decoration: none;
            padding: 5px 0;
            font-size: 14px;
            transition: color 0.2s;
        }
        .anchor-link:hover {
            color: #D4A853;
        }
        .breadcrumb-link {
            color: #5B6B7F;
            text-decoration: none;
            transition: color 0.2s;
        }
        .breadcrumb-link:hover {
            color: #D4A853;
        }

/* roulang page: article */
:root {
            --gold: #D4A853;
            --gold-light: #E8C37A;
            --gold-dark: #B8893D;
            --bg-dark: #0A0E14;
            --bg-card: #111820;
            --bg-hover: #161F2B;
            --text-main: #E8EDF2;
            --text-muted: #94A3B8;
            --text-faint: #5B6B7F;
            --border: rgba(255, 255, 255, 0.06);
            --border-strong: rgba(255, 255, 255, 0.1);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.5);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            font-feature-settings: "tnum";
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        :focus-visible {
            outline: 2px solid var(--gold-light) !important;
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .glass {
            background: rgba(10, 14, 20, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        #siteHeader.scrolled {
            background: #0A0E14;
            border-bottom-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--gold), var(--gold-dark));
            color: #0A0E14;
            font-weight: 600;
            border-radius: 8px;
            padding: 12px 24px;
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            box-shadow: 0 2px 8px rgba(212, 168, 83, 0.3);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--gold-light), var(--gold));
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(212, 168, 83, 0.4);
            color: #0A0E14;
        }
        .btn-primary:active {
            background: var(--gold-dark);
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(212, 168, 83, 0.3);
        }
        .footer-link {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 2.4;
            transition: color 0.2s;
        }
        .footer-link:hover {
            color: var(--gold);
        }
        .breadcrumb-wrap {
            padding: 100px 0 0;
            background: linear-gradient(180deg, rgba(10, 14, 20, 0.4) 0%, rgba(10, 14, 20, 0.95) 100%);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-faint);
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--gold);
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.2);
        }
        .breadcrumb .current {
            color: var(--text-main);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 360px;
        }
        .article-page {
            padding: 48px 0 96px;
        }
        .article-header {
            max-width: 860px;
            margin: 0 auto 40px;
        }
        .article-title {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            line-height: 1.3;
            color: #FFFFFF;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
        }
        .article-title .highlight {
            color: var(--gold);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 28px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }
        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i {
            color: var(--gold);
            font-size: 12px;
        }
        .article-meta .meta-divider {
            width: 1px;
            height: 12px;
            background: var(--border-strong);
        }
        .article-cover {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            aspect-ratio: 16 / 7;
            margin-bottom: 48px;
        }
        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .article-body-wrap {
            max-width: 768px;
            margin: 0 auto;
        }
        .article-body {
            color: #C8D0DA;
            font-size: 16px;
        }
        .article-body p {
            color: #C8D0DA;
            font-size: 16px;
            line-height: 1.9;
            margin-bottom: 24px;
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 44px 0 20px;
            padding-left: 14px;
            border-left: 3px solid var(--gold);
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 19px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 32px 0 16px;
            line-height: 1.5;
        }
        .article-body ul {
            margin: 0 0 28px;
            padding-left: 0;
            list-style: none;
        }
        .article-body ul li {
            position: relative;
            padding-left: 24px;
            color: #C8D0DA;
            line-height: 1.9;
            margin-bottom: 10px;
        }
        .article-body ul li::before {
            content: '';
            position: absolute;
            left: 4px;
            top: 13px;
            width: 8px;
            height: 8px;
            background: var(--gold);
            border-radius: 2px;
            transform: rotate(45deg);
        }
        .article-body ol {
            margin: 0 0 28px;
            padding-left: 20px;
            color: #C8D0DA;
            line-height: 1.9;
        }
        .article-body ol li {
            margin-bottom: 8px;
        }
        .article-body blockquote {
            border-left: 3px solid var(--gold);
            background: rgba(212, 168, 83, 0.07);
            padding: 16px 20px;
            margin: 28px 0;
            border-radius: 0 10px 10px 0;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }
        .article-body a {
            color: var(--gold);
            text-decoration: underline;
            text-decoration-color: rgba(212, 168, 83, 0.4);
            text-underline-offset: 4px;
            transition: color 0.2s;
        }
        .article-body a:hover {
            color: var(--gold-light);
            text-decoration-color: var(--gold-light);
        }
        .article-body strong {
            color: #FFFFFF;
            font-weight: 600;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 28px 0;
        }
        .article-tags {
            max-width: 768px;
            margin: 40px auto 0;
            padding-top: 32px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .article-tags .tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 16px;
            background: rgba(212, 168, 83, 0.1);
            border: 1px solid rgba(212, 168, 83, 0.25);
            color: var(--gold);
            font-size: 13px;
            border-radius: 999px;
            transition: all 0.2s;
        }
        .article-tags .tag:hover {
            background: rgba(212, 168, 83, 0.2);
            border-color: var(--gold);
        }
        .related-posts {
            max-width: 1200px;
            margin: 72px auto 0;
        }
        .related-posts .section-title {
            font-size: 28px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 32px;
            position: relative;
            padding-left: 16px;
        }
        .related-posts .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 3px;
            background: var(--gold);
            border-radius: 2px;
        }
        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.25s ease;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(212, 168, 83, 0.4);
            background: var(--bg-hover);
        }
        .related-card .card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .card-img img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 18px 20px 22px;
        }
        .related-card .card-title {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            line-height: 1.5;
            margin-bottom: 10px;
            transition: color 0.2s;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card:hover .card-title {
            color: var(--gold);
        }
        .related-card .card-date {
            font-size: 12px;
            color: var(--text-faint);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-back-links {
            max-width: 1200px;
            margin: 56px auto 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .article-back-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border: 1px solid var(--border-strong);
            border-radius: 8px;
            transition: all 0.2s;
        }
        .article-back-links a:hover {
            border-color: var(--gold);
            color: var(--gold);
            background: rgba(212, 168, 83, 0.06);
        }
        .not-found {
            max-width: 768px;
            margin: 80px auto;
            text-align: center;
            padding: 80px 40px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
        }
        .not-found .icon {
            font-size: 48px;
            color: var(--gold);
            margin-bottom: 20px;
        }
        .not-found p {
            font-size: 20px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .not-found .sub {
            font-size: 14px;
            color: var(--text-faint);
            margin-bottom: 28px;
        }
        .not-found a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--gold);
            font-size: 15px;
            font-weight: 500;
        }
        .not-found a:hover {
            color: var(--gold-light);
        }
        @media (max-width: 1023px) {
            .menu-desktop {
                display: none !important;
            }
            .mobile-menu-btn {
                display: flex !important;
            }
            .breadcrumb-wrap {
                padding-top: 80px;
            }
            .article-page {
                padding: 36px 0 72px;
            }
            .article-cover {
                aspect-ratio: 16 / 8;
            }
            .related-posts .grid-cols-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-posts .grid-cols-3 > *:last-child {
                grid-column: span 2;
            }
            .article-meta {
                gap: 12px;
            }
        }
        @media (max-width: 767px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .breadcrumb-wrap {
                padding-top: 72px;
            }
            .breadcrumb .current {
                max-width: 140px;
            }
            .article-page {
                padding: 24px 0 56px;
            }
            .article-header {
                margin-bottom: 28px;
            }
            .article-title {
                font-size: 26px;
                line-height: 1.35;
            }
            .article-meta {
                font-size: 12px;
                gap: 10px;
            }
            .article-meta .meta-divider {
                display: none;
            }
            .article-cover {
                aspect-ratio: 16 / 10;
                margin-bottom: 32px;
            }
            .article-body p {
                font-size: 15px;
                line-height: 1.85;
                margin-bottom: 20px;
            }
            .article-body h2 {
                font-size: 20px;
                margin: 32px 0 16px;
            }
            .article-body h3 {
                font-size: 17px;
                margin: 24px 0 12px;
            }
            .related-posts {
                margin-top: 48px;
            }
            .related-posts .section-title {
                font-size: 22px;
                margin-bottom: 24px;
            }
            .related-posts .grid-cols-3 {
                grid-template-columns: 1fr;
            }
            .related-posts .grid-cols-3 > *:last-child {
                grid-column: span 1;
            }
            .related-card .card-title {
                font-size: 14px;
            }
            .article-back-links {
                margin-top: 40px;
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }
            .article-back-links a {
                justify-content: center;
                width: 100%;
            }
            .not-found {
                margin: 48px 16px;
                padding: 48px 24px;
            }
        }

/* roulang page: category2 */
:root {
            --gold: #D4A853;
            --gold-light: #E8C37A;
            --gold-dark: #B8893D;
            --bg-dark: #0A0E14;
            --bg-card: #111820;
            --bg-hover: #161F2B;
            --text-main: #E8EDF2;
            --text-mid: #94A3B8;
            --text-dim: #5B6B7F;
            --border-line: rgba(255, 255, 255, 0.06);
            --border-gold: rgba(212, 168, 83, 0.5);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.5);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input {
            font-family: inherit;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid #E8C37A;
            outline-offset: 2px;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .glass {
            background: rgba(10, 14, 20, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        #siteHeader.scrolled {
            background: #0A0E14;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: var(--gold);
            color: #0A0E14;
            font-weight: 600;
            border-radius: 8px;
            padding: 12px 24px;
            transition: all 0.25s ease;
            box-shadow: 0 2px 8px rgba(212, 168, 83, 0.3);
            line-height: 1.2;
        }
        .btn-primary:hover {
            background: var(--gold-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212, 168, 83, 0.35);
        }
        .btn-primary:active {
            background: var(--gold-dark);
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(212, 168, 83, 0.25);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: transparent;
            color: #E8EDF2;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            padding: 12px 24px;
            font-weight: 500;
            transition: all 0.25s ease;
            line-height: 1.2;
        }
        .btn-secondary:hover {
            border-color: var(--gold);
            color: var(--gold-light);
            background: rgba(212, 168, 83, 0.08);
        }
        .btn-secondary:active {
            border-color: var(--gold-dark);
            color: var(--gold-dark);
        }
        .text-link {
            color: var(--gold);
            text-decoration: underline;
            text-underline-offset: 2px;
            transition: all 0.2s ease;
        }
        .text-link:hover {
            color: var(--gold-light);
            text-decoration: none;
            background: rgba(212, 168, 83, 0.1);
            border-radius: 4px;
        }
        .page-hero {
            position: relative;
            background-image:
                linear-gradient(180deg, rgba(10, 14, 20, 0.82) 0%, #0A0E14 100%),
                radial-gradient(ellipse at top right, rgba(212, 168, 83, 0.18), transparent 60%),
                url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 160px 0 80px;
        }
        .page-hero h1 {
            font-size: clamp(32px, 4.5vw, 52px);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
        }
        .page-hero .subtitle {
            font-size: 16px;
            color: var(--text-mid);
            max-width: 640px;
            line-height: 1.9;
        }
        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-mid);
            padding: 5px 12px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 999px;
            background: rgba(10, 14, 20, 0.5);
        }
        .trust-badge i {
            color: var(--gold);
        }
        .content-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }
        .content-card:hover {
            border-color: rgba(212, 168, 83, 0.4);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .content-card .card-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: rgba(212, 168, 83, 0.12);
            border: 1px solid rgba(212, 168, 83, 0.25);
            color: var(--gold);
            font-size: 20px;
            flex-shrink: 0;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            position: relative;
            padding-left: 18px;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 3px;
            border-radius: 2px;
            background: var(--gold);
        }
        .section-subtitle {
            font-size: 14px;
            color: var(--text-mid);
            margin-top: 10px;
            max-width: 720px;
            line-height: 1.8;
        }
        .step-list {
            position: relative;
            padding-left: 32px;
        }
        .step-list::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 8px;
            bottom: 8px;
            width: 1px;
            background: rgba(212, 168, 83, 0.25);
        }
        .step-item {
            position: relative;
            padding: 20px 0 20px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-num {
            position: absolute;
            left: -32px;
            top: 22px;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--gold);
            color: var(--gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            z-index: 1;
        }
        .step-item h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.8;
        }
        .tag-pill {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(212, 168, 83, 0.1);
            color: var(--gold);
            border: 1px solid rgba(212, 168, 83, 0.2);
            transition: all 0.2s ease;
        }
        .tag-pill:hover {
            background: rgba(212, 168, 83, 0.2);
            border-color: rgba(212, 168, 83, 0.5);
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 10px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(212, 168, 83, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            width: 100%;
            text-align: left;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
        }
        .faq-q-mark {
            width: 26px;
            height: 26px;
            border-radius: 6px;
            background: rgba(212, 168, 83, 0.15);
            color: var(--gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .faq-icon {
            margin-left: auto;
            color: var(--gold);
            transition: transform 0.3s ease;
            font-size: 14px;
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer-inner {
            padding: 0 20px 18px 60px;
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.8;
        }
        .cta-section {
            position: relative;
            background:
                radial-gradient(ellipse at right center, rgba(212, 168, 83, 0.2), transparent 65%),
                var(--bg-card);
            border-top: 1px solid rgba(212, 168, 83, 0.3);
            border-bottom: 1px solid rgba(212, 168, 83, 0.3);
            border-radius: 20px;
            padding: 64px 32px;
            text-align: center;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(212, 168, 83, 0.6), transparent);
        }
        .aside-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 12px;
            padding: 24px;
            margin-bottom: 20px;
        }
        .aside-card h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .aside-card ul li {
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-mid);
        }
        .aside-card ul li a {
            transition: color 0.2s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .aside-card ul li a:hover {
            color: var(--gold);
        }
        .aside-card ul li a i {
            font-size: 12px;
            color: var(--gold);
            opacity: 0.7;
        }
        .footer-link {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 2.2;
            transition: color 0.2s ease;
        }
        .footer-link:hover {
            color: var(--gold);
        }
        .mobile-menu {
            display: none;
        }
        .mobile-menu.open {
            display: block;
        }
        .menu-desktop .active {
            color: var(--gold);
            position: relative;
        }
        .menu-desktop .active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -6px;
            height: 2px;
            border-radius: 2px;
            background: var(--gold);
        }
        @media (max-width: 1023px) {
            .menu-desktop {
                display: none !important;
            }
            .mobile-menu-btn {
                display: flex !important;
            }
            .mobile-menu {
                display: none;
            }
            .mobile-menu.open {
                display: block;
            }
            .footer-columns {
                grid-template-columns: repeat(2, 1fr) !important;
            }
        }
        @media (max-width: 767px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-hero {
                padding: 120px 0 56px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .section-title {
                font-size: 22px;
            }
            .content-card {
                padding: 20px;
            }
            .footer-columns {
                grid-template-columns: 1fr !important;
            }
            .cta-section {
                padding: 40px 20px;
                border-radius: 14px;
            }
        }
        @media (max-width: 520px) {
            .trust-badge {
                font-size: 12px;
                padding: 4px 10px;
            }
            .step-item {
                padding-left: 16px;
            }
            .faq-answer-inner {
                padding-left: 20px;
            }
        }