/* roulang page: index */
:root {
            --bg-page: #F5F8FA;
            --brand: #286A8B;
            --brand-dark: #174E69;
            --brand-light: #E5F0F5;
            --accent: #0E9A8B;
            --accent-light: #E1F2F0;
            --text: #1D2E3A;
            --text-sub: #58707E;
            --line: #DDE7ED;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow: 0 2px 8px rgba(23, 71, 91, 0.05), 0 10px 22px -18px rgba(23, 71, 91, 0.18);
            --shadow-hover: 0 10px 22px -8px rgba(23, 71, 91, 0.14), 0 22px 34px -24px rgba(23, 71, 91, 0.26);
            --transition: all 0.25s ease;
            --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-page);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: var(--brand);
            transition: var(--transition);
        }
        a:hover {
            color: var(--brand-dark);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button,
        input {
            font-family: inherit;
        }
        .container-site {
            max-width: 1360px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-block {
            padding: 72px 0;
        }
        .text-sub {
            color: var(--text-sub);
        }
        .brand-primary {
            color: var(--brand);
        }
        .cta-button {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--brand);
            color: #fff;
            border: 1px solid var(--brand);
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            min-height: 44px;
            transition: var(--transition);
        }
        .cta-button:hover {
            background-color: var(--brand-dark);
            border-color: var(--brand-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px -8px rgba(23, 78, 105, 0.4);
        }
        .cta-outline {
            background-color: transparent;
            color: var(--brand);
            border: 1px solid var(--brand);
        }
        .cta-outline:hover {
            background-color: var(--brand);
            color: #fff;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            background-color: var(--brand-light);
            color: var(--brand-dark);
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 16px;
        }
        .section-title {
            font-size: clamp(26px, 3vw, 36px);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-sub);
            max-width: 720px;
        }
        .card-item {
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: #fff;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
        }
        .card-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(40, 106, 139, 0.3);
        }
        .badge-category {
            display: inline-block;
            padding: 4px 12px;
            background-color: var(--accent-light);
            color: #0b635b;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
        }
        .badge-time {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-sub);
        }
        .line-clamp-1 {
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .line-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        /* Header */
        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--line);
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 4px 20px rgba(23, 71, 91, 0.04);
        }
        .navbar-brand-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 16px 0;
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
        }
        .navbar-brand-custom .logo-mark {
            width: 38px;
            height: 38px;
            background: linear-gradient(145deg, var(--brand), var(--brand-dark));
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 20px;
            line-height: 1;
            flex-shrink: 0;
        }
        .site-nav .nav-link-custom {
            color: var(--text);
            font-weight: 600;
            padding: 10px 16px;
            margin: 0 2px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            transition: var(--transition);
            position: relative;
        }
        .site-nav .nav-link-custom:hover {
            color: var(--brand);
            background: var(--brand-light);
        }
        .site-nav .nav-link-custom.active {
            color: var(--brand);
            background: transparent;
        }
        .site-nav .nav-link-custom.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--brand);
            border-radius: 2px;
        }
        .mega-menu-wrap {
            position: relative;
        }
        .mega-dropdown-panel {
            display: none;
            position: absolute;
            left: auto;
            right: 0;
            top: calc(100% + 12px);
            width: 680px;
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--line);
            box-shadow: 0 24px 60px -24px rgba(23, 71, 91, 0.25);
            padding: 28px;
            z-index: 1050;
        }
        .mega-menu-wrap:hover .mega-dropdown-panel {
            display: block;
        }
        .mega-menu-wrap .nav-link-custom:focus+.mega-dropdown-panel {
            display: block;
        }
        .navbar-toggler-custom {
            border: none;
            padding: 8px 10px;
        }
        .navbar-toggler-custom:focus {
            box-shadow: none;
        }
        /* Hero */
        .hero-section {
            padding: 0;
            background: linear-gradient(135deg, #EDF3F7 0%, #F7FAFC 50%, #EAF2F7 100%);
            border-bottom: 1px solid var(--line);
            overflow: hidden;
        }
        .hero-wrapper {
            display: flex;
            align-items: center;
            min-height: 520px;
            padding: 60px 0;
        }
        .hero-card-image {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.6);
            box-shadow: var(--shadow-hover);
            min-height: 400px;
            position: relative;
            overflow: hidden;
        }
        .hero-card-image::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(23, 78, 105, 0.55) 0%, rgba(23, 78, 105, 0) 60%);
            z-index: 1;
        }
        .hero-cover-info {
            position: absolute;
            left: 20px;
            bottom: 20px;
            z-index: 2;
            color: #fff;
            background: rgba(15, 42, 59, 0.55);
            backdrop-filter: blur(4px);
            border-radius: 12px;
            padding: 14px 18px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            max-width: calc(100% - 40px);
        }
        .hero-cover-label {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.4;
        }
        .hero-cover-desc {
            font-size: 13px;
            opacity: 0.9;
        }
        .hero-tagline {
            display: inline-block;
            background: #fff;
            color: var(--brand);
            border-radius: 30px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            border: 1px solid var(--line);
            box-shadow: 0 2px 6px rgba(23, 71, 91, 0.06);
            margin-bottom: 20px;
        }
        .hero-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 0 18px;
            border-right: 1px solid var(--line);
        }
        .hero-meta-item:first-child {
            padding-left: 0;
        }
        .hero-meta-item:last-child {
            border-right: none;
        }
        .hero-meta-num {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
        }
        .hero-meta-txt {
            font-size: 13px;
            color: var(--text-sub);
        }
        .logo-banner {
            background: #fff;
            padding: 10px 0;
            border-bottom: 1px solid var(--line);
        }
        .logo-banner .brand-line {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }
        .partner-text {
            color: var(--text-sub);
            font-size: 14px;
            font-weight: 600;
        }
        .brand-line i {
            color: var(--brand);
            font-size: 18px;
            margin: 0 6px;
        }
        /* Collection */
        .card-collection {
            display: flex;
            flex-direction: column;
            padding: 28px 24px;
        }
        .collection-icon {
            width: 52px;
            height: 52px;
            background: var(--brand-light);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--brand);
            margin-bottom: 16px;
        }
        .collection-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
        .collection-desc {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .collection-arrow {
            margin-top: auto;
            color: var(--brand);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .collection-arrow i {
            transition: transform 0.2s;
        }
        .card-item:hover .collection-arrow i {
            transform: translateX(4px);
        }
        /* Latest News */
        .news-list-card {
            display: flex;
            gap: 18px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 18px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
        }
        .news-list-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(40, 106, 139, 0.2);
        }
        .news-thumb {
            width: 152px;
            height: 104px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
            background-color: var(--brand-light);
        }
        .news-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            background: var(--accent-light);
            color: #0b635b;
            margin-right: 10px;
        }
        .empty-state {
            text-align: center;
            padding: 60px 20px;
            background: #fff;
            border: 1px dashed var(--line);
            border-radius: var(--radius);
        }
        .empty-icon {
            font-size: 40px;
            color: var(--brand);
            margin-bottom: 12px;
        }
        /* Feature Story */
        .story-main {
            display: flex;
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--line);
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
        }
        .story-main:hover {
            box-shadow: var(--shadow-hover);
        }
        .story-main .story-body {
            padding: 28px 26px;
        }
        .story-main .story-title {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
        }
        .story-main .story-summary {
            color: var(--text-sub);
            font-size: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .story-side-card {
            display: flex;
            flex-direction: column;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 20px 18px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .story-side-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        /* recommendation */
        .recommend-grid .rec-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--line);
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
        }
        .recommend-grid .rec-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .rec-card-img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }
        .rec-card-body {
            padding: 16px 16px 18px;
        }
        .rec-card-title {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            color: var(--text);
        }
        .rec-card-title:hover {
            color: var(--brand);
        }
        .rec-card-bottom {
            font-size: 13px;
            color: var(--text-sub);
        }
        /* Stats */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-item {
            text-align: center;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 24px 10px;
            box-shadow: var(--shadow);
        }
        .stat-value {
            font-size: 32px;
            font-weight: 700;
            color: var(--brand);
        }
        .stat-unit {
            font-size: 15px;
            color: var(--text);
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-sub);
        }
        /* deep area */
        .match-card {
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--line);
            overflow: hidden;
            box-shadow: var(--shadow);
            height: 100%;
        }
        .match-top {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .match-info {
            padding: 24px;
        }
        .league-name {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
            color: var(--brand);
            background: var(--brand-light);
            padding: 4px 12px;
            border-radius: 16px;
        }
        .team-name {
            font-weight: 700;
            font-size: 18px;
            color: var(--text);
            margin: 0 8px;
        }
        .score {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-sub);
        }
        .center-info {
            color: var(--text-sub);
            font-size: 13px;
            text-align: center;
            padding-width: 30px;
        }
        /* FAQ */
        .faq-wrap {
            max-width: 920px;
        }
        .accordion-custom {
            border: 1px solid var(--line);
            border-radius: var(--radius);
            background: #fff;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .accordion-header-custom {
            width: 100%;
            padding: 18px 24px;
            background: transparent;
            border: none;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .accordion-header-custom .fa-chevron-down {
            transition: transform 0.3s;
            color: var(--brand);
            font-size: 14px;
        }
        .accordion-header-custom.active .fa-chevron-down {
            transform: rotate(180deg);
        }
        .accordion-body-custom {
            padding: 0 24px 18px;
            color: var(--text-sub);
        }
        /* CTA band */
        .cta-band {
            background: var(--brand-light);
            border-radius: 20px;
            padding: 36px 40px;
        }
        /* footer */
        .site-footer {
            background: #0F2A3B;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
            margin-top: 40px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
        }
        .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
            line-height: 1.8;
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-link-list li {
            margin-bottom: 8px;
        }
        .footer-link-list a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            display: inline-block;
            transition: var(--transition);
        }
        .footer-link-list a:hover {
            color: #fff;
            padding-left: 5px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            color: rgba(255, 255, 255, 0.5);
            font-size: 14px;
        }
        .back-to-top {
            position: fixed;
            bottom: 24px;
            right: 24px;
            background: var(--brand);
            color: #fff;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            border: none;
            box-shadow: 0 8px 24px rgba(23, 78, 105, 0.35);
            z-index: 999;
            transition: var(--transition);
            opacity: 0.8;
        }
        .back-to-top:hover {
            background: var(--brand-dark);
            color: #fff;
            opacity: 1;
            transform: translateY(-3px);
        }

        /* ===== responsive ===== */
        @media (max-width: 992px) {
            .mega-dropdown-panel {
                display: none;
                width: 100%;
                position: static;
                box-shadow: none;
                padding: 20px;
                margin-top: 8px;
            }
            .mega-menu-wrap.mobile-open .mega-dropdown-panel {
                display: block;
            }
            .hero-wrapper {
                flex-direction: column;
                padding: 40px 0;
                gap: 30px;
            }
            .hero-card-image {
                min-height: 320px;
                width: 100%;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-list-card {
                flex-direction: row;
            }
            .news-thumb {
                width: 120px;
                height: 88px;
            }
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 48px 0;
            }
            .cta-band {
                padding: 24px 18px;
            }
            .footer-bottom {
                text-align: center;
                font-size: 13px;
                padding: 16px 0;
            }
        }
        @media (max-width: 576px) {
            body {
                font-size: 15px;
            }
            .hero-wrapper {
                min-height: auto;
            }
            .news-list-card {
                flex-direction: column;
                align-items: flex-start;
                padding: 14px;
            }
            .news-thumb {
                width: 100%;
                height: 140px;
            }
            .hero-meta-item {
                padding: 0 10px;
            }
            .hero-meta-num {
                font-size: 17px;
            }
            .stats-row {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category1 */
:root {
            --bg: #F5F8FA;
            --bg-deep: #EAF1F5;
            --brand: #286A8B;
            --brand-dark: #174E69;
            --brand-light: #E5F0F5;
            --accent: #0E9A8B;
            --accent-dark: #0B7D71;
            --accent-light: #E1F2F0;
            --text: #1D2E3A;
            --text-sub: #58707E;
            --line: #DDE7ED;
            --radius: 14px;
            --radius-sm: 9px;
            --shadow: 0 2px 8px rgba(23, 71, 91, 0.05), 0 10px 22px -18px rgba(23, 71, 91, 0.18);
            --shadow-hover: 0 10px 22px -8px rgba(23, 71, 91, 0.14), 0 22px 34px -24px rgba(23, 71, 91, 0.26);
            --section-y: 84px;
            --section-inner-y: 64px;
            --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

        a:hover {
            color: var(--brand);
        }

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

        button,
        input {
            font-family: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid rgba(40, 106, 139, .78);
            outline-offset: 2px;
        }

        .container-site {
            max-width: 1360px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-block {
            padding-top: var(--section-y);
            padding-bottom: var(--section-y);
        }

        .section-inner-block {
            padding-top: var(--section-inner-y);
            padding-bottom: var(--section-inner-y);
        }

        .section-head {
            max-width: 850px;
            margin-bottom: 42px;
        }

        .section-head .eyebrow-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--brand-light);
            color: var(--brand-dark);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px 5px 12px;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: clamp(24px, 2.6vw + 6px, 34px);
            font-weight: 700;
            line-height: 1.35;
            margin: 0 0 12px;
            color: var(--text);
            letter-spacing: 0;
        }

        .section-head p {
            color: var(--text-sub);
            font-size: 15.5px;
            margin: 0;
        }

        .btn-brand {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--brand);
            border: 1px solid var(--brand);
            color: #fff;
            border-radius: 10px;
            padding: 11px 22px;
            font-weight: 600;
            font-size: 15px;
            transition: background .22s ease, border-color .22s ease, transform .22s ease, box-shadow .22s ease;
            box-shadow: 0 6px 18px -12px rgba(23, 78, 105, .55);
        }

        .btn-brand:hover {
            background: var(--brand-dark);
            border-color: var(--brand-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 22px -14px rgba(23, 78, 105, .72);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: #fff;
            border: 1px solid var(--line);
            color: var(--brand-dark);
            border-radius: 10px;
            padding: 11px 20px;
            font-weight: 600;
            font-size: 15px;
            transition: background .22s ease, border-color .22s ease, transform .22s ease;
        }

        .btn-ghost:hover {
            border-color: var(--brand);
            background: var(--brand-light);
            color: var(--brand-dark);
            transform: translateY(-2px);
        }

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

        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
        }

        .icon-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            margin-right: 7px;
        }

        .mini-text {
            color: var(--text-sub);
            font-size: 13.5px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, .96);
            border-bottom: 1px solid var(--line);
            backdrop-filter: blur(6px);
        }

        .site-header .navbar {
            min-height: 72px;
            padding-top: 0;
            padding-bottom: 0;
        }

        .navbar-brand-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 21px;
            font-weight: 700;
            letter-spacing: 0;
            color: var(--text);
            white-space: nowrap;
        }

        .navbar-brand-custom:hover {
            color: var(--text);
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--brand);
            border-radius: 9px;
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            line-height: 1;
            flex: 0 0 auto;
            box-shadow: inset 0 -2px 0 rgba(255, 255, 255, .2);
        }

        .site-nav {
            margin-left: auto;
        }

        .site-nav .navbar-nav {
            gap: 3px;
        }

        .nav-link-custom {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            color: var(--text);
            font-weight: 600;
            font-size: 15px;
            border-radius: 8px;
            transition: color .2s ease, background .2s ease;
        }

        .nav-link-custom:hover,
        .nav-link-custom:focus-visible {
            background: var(--brand-light);
            color: var(--brand);
        }

        .nav-link-custom.active {
            color: var(--brand);
        }

        .nav-link-custom.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: -10px;
            height: 2px;
            border-radius: 4px;
            background: var(--brand);
        }

        .navbar-toggler-custom {
            border: 0;
            padding: 0;
            width: 44px;
            height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: transparent;
            transition: background .2s ease;
        }

        .navbar-toggler-custom:hover {
            background: var(--brand-light);
        }

        .mega-menu-wrap {
            position: relative;
        }

        .mega-dropdown-panel {
            position: absolute;
            top: calc(100% + 12px);
            right: 0;
            width: min(760px, calc(100vw - 40px));
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 16px;
            box-shadow: var(--shadow-hover);
            padding: 24px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(6px);
            pointer-events: none;
            transition: opacity .2s ease, transform .22s ease, visibility .2s ease;
        }

        .mega-menu-wrap:hover .mega-dropdown-panel,
        .mega-menu-wrap:focus-within .mega-dropdown-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
            pointer-events: auto;
        }

        .mega-dropdown-panel .mega-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
        }

        .mega-dropdown-panel a.text-sub {
            color: var(--text-sub);
            font-size: 14px;
        }

        .mega-dropdown-panel a.text-sub:hover {
            color: var(--brand);
        }

        .offcanvas-custom {
            max-width: 330px;
            background: var(--bg);
        }

        .mobile-nav-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 13px 12px;
            border-radius: 10px;
            font-size: 15.5px;
            font-weight: 600;
            color: var(--text);
            border-bottom: 1px solid rgba(221, 231, 237, .7);
        }

        .mobile-nav-link:hover {
            background: var(--brand-light);
            color: var(--brand);
        }

        .mobile-nav-link.mobile-active {
            color: var(--brand);
            background: var(--brand-light);
            border-left: 4px solid var(--brand);
        }

        .offcanvas-footer {
            margin-top: 20px;
            padding: 12px;
            border-radius: 12px;
            background: var(--accent-light);
            color: var(--accent-dark);
            font-size: 13.5px;
            line-height: 1.7;
        }

        /* Category Hero */
        .category-hero {
            min-height: 360px;
            display: flex;
            align-items: center;
            position: relative;
            padding: 70px 0 52px;
            background:
                linear-gradient(105deg, rgba(245, 248, 250, .98) 0%, rgba(229, 240, 245, .96) 45%, rgba(229, 240, 245, .82) 100%),
                url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--line);
        }

        .category-hero .breadcrumb {
            margin-bottom: 22px;
            font-size: 13.5px;
        }

        .category-hero .breadcrumb-item a {
            color: var(--text-sub);
            transition: color .2s ease;
        }

        .category-hero .breadcrumb-item a:hover {
            color: var(--brand);
        }

        .category-hero .breadcrumb-item.active {
            color: var(--brand-dark);
            font-weight: 600;
        }

        .category-hero .breadcrumb-item + .breadcrumb-item::before {
            color: #9bb3c2;
        }

        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--brand-dark);
            background: rgba(255, 255, 255, .8);
            border: 1px solid var(--line);
            border-radius: 60px;
            padding: 6px 15px;
            font-size: 13.5px;
            font-weight: 600;
            box-shadow: var(--shadow);
            margin-bottom: 16px;
        }

        .category-hero-title {
            font-size: clamp(32px, 4.4vw + 8px, 56px);
            font-weight: 800;
            line-height: 1.18;
            margin: 0 0 13px;
            color: var(--text);
            letter-spacing: 0;
        }

        .hero-desc {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-sub);
            max-width: 650px;
            margin-bottom: 26px;
        }

        .hero-metas {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-meta-pill {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 9px;
            color: var(--text);
            font-size: 13.5px;
            padding: 8px 13px;
            display: inline-flex;
            align-items: center;
            gap: 7px;
            box-shadow: var(--shadow);
        }

        .hero-meta-pill i {
            color: var(--accent);
            font-size: 12px;
        }

        .hero-cover-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 10px;
            box-shadow: var(--shadow-hover);
        }

        .hero-cover-media {
            border-radius: 12px;
            overflow: hidden;
        }

        .hero-cover-media img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .hero-cover-note {
            padding: 13px 12px 9px;
            font-size: 13.5px;
            color: var(--text-sub);
            line-height: 1.65;
        }

        /* Common card */
        .topic-card,
        .featured-card,
        .cross-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 14px;
            height: 100%;
            box-shadow: var(--shadow);
            transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease;
        }

        .topic-card:hover,
        .featured-card:hover,
        .cross-card:hover {
            transform: translateY(-3px);
            border-color: #cfdce4;
            box-shadow: var(--shadow-hover);
        }

        .topic-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--brand-light);
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            margin-bottom: 18px;
        }

        .topic-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .topic-card p {
            color: var(--text-sub);
            font-size: 14.5px;
            margin-bottom: 16px;
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 4;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .topic-card .more-arrow {
            color: var(--brand);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* Reading Steps */
        .reading-steps-wrap {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 18px;
            box-shadow: var(--shadow);
            padding: 26px;
        }

        .reading-step {
            display: flex;
            gap: 18px;
            padding: 18px 8px;
            border-bottom: 1px solid var(--line);
        }

        .reading-step:last-child {
            border-bottom: 0;
            padding-bottom: 7px;
        }

        .step-number {
            font-size: 28px;
            font-weight: 800;
            line-height: 1;
            color: var(--brand-light);
            flex: 0 0 54px;
            font-variant-numeric: tabular-nums;
        }

        .reading-step h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 6px;
        }

        .reading-step p {
            color: var(--text-sub);
            font-size: 14.5px;
            margin: 0;
            line-height: 1.8;
            max-width: 760px;
        }

        /* Featured */
        .featured-card {
            overflow: hidden;
        }

        .featured-media {
            position: relative;
            overflow: hidden;
        }

        .featured-media img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }

        .featured-card:hover .featured-media img {
            transform: scale(1.02);
        }

        .featured-body {
            padding: 22px 22px 18px;
        }

        .featured-tag {
            display: inline-flex;
            align-items: center;
            background: var(--accent-light);
            color: var(--accent-dark);
            font-size: 12.5px;
            font-weight: 600;
            border-radius: 50px;
            padding: 4px 12px;
            margin-bottom: 11px;
        }

        .featured-card-lg h3,
        .featured-card h3 {
            font-size: 17px;
            line-height: 1.55;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .featured-card-lg h3 {
            font-size: 20px;
            line-height: 1.5;
        }

        .featured-card p {
            color: var(--text-sub);
            font-size: 14.5px;
            line-height: 1.78;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .featured-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-sub);
            font-size: 13px;
        }

        .featured-meta a {
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-weight: 600;
        }

        .featured-meta a i {
            transition: transform .2s ease;
        }

        .featured-meta a:hover i {
            transform: translateX(3px);
        }

        /* Cross nav */
        .cross-card {
            display: flex;
            align-items: stretch;
            overflow: hidden;
            text-decoration: none;
            color: inherit;
        }

        .cross-card:hover {
            text-decoration: none;
            color: inherit;
        }

        .cross-media {
            width: 36%;
            min-width: 120px;
            position: relative;
            overflow: hidden;
        }

        .cross-media img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .cross-body {
            padding: 18px 20px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex: 1;
        }

        .cross-tag {
            font-size: 12.5px;
            font-weight: 600;
            color: var(--accent-dark);
            background: var(--accent-light);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 40px;
            width: fit-content;
            padding: 3px 11px;
            margin-bottom: 9px;
        }

        .cross-body h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 5px;
            color: var(--text);
        }

        .cross-body p {
            font-size: 13.5px;
            color: var(--text-sub);
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* FAQ */
        .faq-wrap .accordion-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 12px !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .faq-wrap .accordion-button {
            background: #fff;
            color: var(--text);
            font-size: 16px;
            font-weight: 600;
            padding: 17px 22px;
            line-height: 1.6;
            border: 0;
            box-shadow: none;
        }

        .faq-wrap .accordion-button:not(.collapsed) {
            color: var(--brand-dark);
            background: var(--brand-light);
            box-shadow: inset 0 -1px 0 rgba(255, 255, 255, .7);
        }

        .faq-wrap .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(40, 106, 139, .14);
            border: 0;
        }

        .faq-wrap .accordion-button::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            background-image: none;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            color: var(--brand);
            transform: rotate(-90deg);
            transition: transform .22s ease;
        }

        .faq-wrap .accordion-button:not(.collapsed)::after {
            transform: rotate(0deg);
            color: var(--brand);
        }

        .faq-wrap .accordion-body {
            padding: 8px 22px 20px;
            color: var(--text-sub);
            font-size: 14.8px;
            line-height: 1.9;
            border-top: 1px solid rgba(221, 231, 237, .5);
        }

        /* CTA */
        .cta-strip {
            border-radius: 18px;
            background:
                linear-gradient(120deg, var(--brand-light), rgba(225, 242, 240, .85));
            border: 1px solid var(--line);
            padding: 34px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-strip h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 6px;
        }

        .cta-strip p {
            margin: 0;
            color: var(--text-sub);
            font-size: 14.5px;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: #0F2A3B;
            color: #D9E5EC;
            margin-top: var(--section-y);
            padding-top: 56px;
            padding-bottom: 24px;
        }

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

        .footer-desc {
            font-size: 14px;
            color: rgba(217, 229, 236, .78);
            line-height: 1.9;
            max-width: 340px;
        }

        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }

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

        .footer-link-list li {
            margin-bottom: 9px;
        }

        .footer-link-list a {
            color: rgba(217, 229, 236, .8);
            font-size: 14px;
            transition: color .2s ease;
        }

        .footer-link-list a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .12);
            margin-top: 30px;
            padding-top: 18px;
            font-size: 13px;
            color: rgba(217, 229, 236, .65);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 8px;
        }

        /* Scroll top */
        .back-top {
            position: fixed;
            right: 22px;
            bottom: 22px;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand);
            border: 0;
            color: #fff;
            box-shadow: 0 12px 24px rgba(23, 78, 105, .4);
            transition: background .2s ease, transform .2s ease;
            z-index: 999;
        }

        .back-top:hover {
            background: var(--brand-dark);
            color: #fff;
            transform: translateY(-4px);
        }

        @media (max-width: 991.98px) {
            :root {
                --section-y: 62px;
                --section-inner-y: 42px;
            }

            .site-nav {
                display: none !important;
            }

            .navbar-toggler-custom {
                display: inline-flex;
            }

            .category-hero {
                padding: 55px 0 42px;
            }

            .reading-steps-wrap {
                padding: 16px;
            }
        }

        @media (max-width: 767.98px) {
            body {
                font-size: 15px;
            }

            .category-hero {
                min-height: auto;
                padding: 40px 0 36px;
            }

            .hero-desc {
                font-size: 15px;
            }

            .reading-step {
                flex-direction: column;
                gap: 6px;
                padding: 16px 4px;
            }

            .step-number {
                font-size: 22px;
                flex-basis: auto;
                color: var(--brand);
            }

            .cta-strip {
                padding: 22px 18px;
            }
        }

        @media (max-width: 575.98px) {
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }

            .navbar-brand-custom {
                font-size: 18px;
            }

            .logo-mark {
                width: 33px;
                height: 33px;
                font-size: 17px;
                border-radius: 8px;
            }

            .category-hero-title {
                font-size: 34px;
            }

            .hero-metas {
                gap: 8px;
            }

            .hero-meta-pill {
                font-size: 12.5px;
                padding: 6px 10px;
            }

            .featured-body {
                padding: 17px 16px 15px;
            }

            .featured-card-lg h3 {
                font-size: 18px;
            }

            .site-footer {
                padding-top: 34px;
            }
        }

/* roulang page: article */
:root {
            --bg: #F5F8FA;
            --brand: #286A8B;
            --brand-dark: #174E69;
            --brand-light: #E5F0F5;
            --accent: #0E9A8B;
            --accent-light: #E1F2F0;
            --text: #1D2E3A;
            --text-sub: #58707E;
            --line: #DDE7ED;
            --white: #FFFFFF;
            --footer-bg: #0F2A3B;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-1: 0 2px 8px rgba(23, 71, 91, .05), 0 10px 22px -18px rgba(23, 71, 91, .18);
            --shadow-2: 0 10px 22px -8px rgba(23, 71, 91, .14), 0 22px 34px -24px rgba(23, 71, 91, .26);
            --font-stack: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: 0;
        }

        button {
            border: 0;
            background: none;
            cursor: pointer;
        }

        p {
            margin-top: 0;
        }

        ul,
        ol {
            padding-left: 1.4rem;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 6px;
        }

        .container-site {
            max-width: 1360px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

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

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--brand);
            color: #fff;
            border-radius: 9px;
            font-weight: 700;
            font-size: 17px;
            letter-spacing: 0;
            flex: 0 0 auto;
        }

        .navbar-brand-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            white-space: nowrap;
            letter-spacing: .2px;
        }

        .navbar-brand-custom:hover,
        .navbar-brand-custom:focus {
            color: var(--brand-dark);
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, .96);
            border-bottom: 1px solid var(--line);
            box-shadow: 0 1px 0 rgba(245, 248, 250, .6);
            backdrop-filter: saturate(1.2);
        }

        .site-header .navbar {
            min-height: 72px;
            position: relative;
            flex-wrap: nowrap;
        }

        .nav-link-custom {
            padding: 8px 14px !important;
            font-size: 15px;
            font-weight: 600;
            color: var(--text) !important;
            border-radius: 8px;
            background: transparent;
            transition: color .18s ease, background .18s ease;
            display: inline-flex;
            align-items: center;
        }

        .nav-link-custom i {
            transition: transform .2s ease;
        }

        .nav-link-custom:hover {
            color: var(--brand) !important;
            background: var(--brand-light);
        }

        .nav-link-custom.active {
            color: var(--brand) !important;
            position: relative;
            background: transparent;
        }

        .nav-link-custom.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 1px;
            height: 2px;
            background: var(--brand);
            border-radius: 4px;
        }

        .mega-menu-wrap {
            position: relative;
        }

        .mega-dropdown-panel {
            position: absolute;
            top: calc(100% + 14px);
            right: -20px;
            left: auto;
            width: 780px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 18px;
            box-shadow: var(--shadow-2);
            padding: 24px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: opacity .22s ease, transform .22s ease, visibility .22s;
            z-index: 1052;
        }

        .mega-menu-wrap:hover .mega-dropdown-panel,
        .mega-menu-wrap:focus-within .mega-dropdown-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-panel-card {
            display: block;
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 14px;
            transition: background .2s ease, transform .2s ease;
        }

        .mega-panel-card:hover {
            background: var(--brand-light);
            transform: translateY(-2px);
        }

        .mega-panel-card .card-title {
            font-weight: 700;
            font-size: 15px;
            color: var(--text);
            margin-bottom: 4px;
        }

        .mega-panel-card .card-tip {
            font-size: 13px;
            color: var(--text-sub);
            line-height: 1.5;
        }

        .navbar-toggler-custom {
            padding: 8px 10px;
            border: 1px solid var(--line);
            border-radius: 10px;
            background: #fff;
            min-width: 44px;
            min-height: 44px;
        }

        .navbar-toggler-custom:focus {
            box-shadow: none;
        }

        .mobile-nav-canvas {
            width: 340px;
            max-width: 92vw;
            background: var(--white);
        }

        .mobile-nav-canvas .offcanvas-header {
            border-bottom: 1px solid var(--line);
            padding: 18px 20px;
        }

        .mobile-nav-list {
            list-style: none;
            margin: 0;
            padding: 14px 20px 30px;
        }

        .mobile-nav-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 13px 10px;
            border-radius: 10px;
            color: var(--text);
            font-weight: 600;
            font-size: 15px;
        }

        .mobile-nav-list a:hover,
        .mobile-nav-list a:focus,
        .mobile-nav-list a.active {
            color: var(--brand);
            background: var(--brand-light);
        }

        .mobile-group-title {
            font-size: 13px;
            color: var(--text-sub);
            font-weight: 600;
            letter-spacing: .4px;
            margin: 16px 10px 4px;
        }

        /* Article banner */
        .article-banner {
            position: relative;
            border-bottom: 1px solid var(--line);
            background: linear-gradient(110deg, rgba(245, 248, 250, .98), rgba(229, 240, 245, .94)), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            padding: 42px 0 38px;
        }

        .article-banner-inner {
            position: relative;
            z-index: 2;
        }

        .breadcrumb-custom {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            margin: 0 0 22px;
            padding: 0;
            font-size: 13px;
            color: var(--text-sub);
        }

        .breadcrumb-custom li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-custom li+li::before {
            content: "·";
            color: #A7BAC5;
        }

        .breadcrumb-custom a {
            color: var(--text-sub);
            transition: color .2s;
        }

        .breadcrumb-custom a:hover {
            color: var(--brand);
        }

        .article-hero-title {
            font-size: clamp(26px, 3vw + 8px, 38px);
            line-height: 1.35;
            font-weight: 700;
            max-width: 920px;
            margin-bottom: 18px;
            letter-spacing: .2px;
            color: var(--text);
        }

        .article-meta {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0;
            color: var(--text-sub);
            font-size: 14px;
        }

        .article-meta li {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding-right: 18px;
            margin-right: 18px;
            border-right: 1px solid var(--line);
        }

        .article-meta li:last-child {
            border-right: 0;
            padding-right: 0;
            margin-right: 0;
        }

        .article-meta i {
            color: var(--brand);
            font-size: 13px;
            width: 16px;
        }

        @media (max-width: 576px) {
            .article-meta {
                font-size: 13px;
            }
            .article-meta li {
                padding-right: 10px;
                margin-right: 10px;
                border: 0;
            }
        }

        /* article layout */
        .article-page {
            padding: 52px 0 20px;
        }

        .row-article-shell {
            display: grid;
            grid-template-columns: minmax(0, 760px) 300px;
            gap: 64px;
            justify-content: center;
        }

        .article-main-card {
            min-width: 0;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 20px;
            box-shadow: var(--shadow-1);
            padding: 42px clamp(22px, 3vw, 46px);
        }

        .article-content {
            font-size: 17px;
            line-height: 1.92;
            color: var(--text);
        }

        .article-content h2 {
            font-size: 1.42rem;
            font-weight: 700;
            margin: 2.1em 0 .7em;
            padding-left: 14px;
            border-left: 4px solid var(--accent);
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 1.22rem;
            font-weight: 700;
            margin: 1.8em 0 .6em;
            color: var(--brand-dark);
        }

        .article-content h4 {
            font-size: 1.08rem;
            font-weight: 700;
            margin: 1.4em 0 .45em;
        }

        .article-content p {
            margin-bottom: 1.5em;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.6em;
        }

        .article-content li {
            margin-bottom: .55em;
        }

        .article-content blockquote {
            margin: 2em 0;
            padding: 18px 22px;
            background: var(--brand-light);
            border-left: 4px solid var(--brand);
            border-radius: 0 12px 12px 0;
            color: var(--brand-dark);
            font-size: 1.03em;
        }

        .article-content blockquote p {
            margin-bottom: .4em;
        }

        .article-content pre {
            background: #0F2A3B;
            color: #E9F0F5;
            padding: 20px 22px;
            border-radius: 14px;
            overflow: auto;
            font-size: 14px;
            line-height: 1.7;
            margin: 1.8em 0;
        }

        .article-content code {
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
            background: var(--brand-light);
            color: var(--brand-dark);
            padding: 2px 6px;
            border-radius: 5px;
            font-size: .9em;
        }

        .article-content pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8em 0;
            font-size: 15px;
        }

        .article-content th,
        .article-content td {
            border: 1px solid var(--line);
            padding: 10px 14px;
            text-align: left;
        }

        .article-content th {
            background: var(--brand-light);
            color: var(--brand-dark);
            font-weight: 600;
        }

        .article-content img {
            border-radius: 14px;
            margin: 1.6em auto;
            display: block;
        }

        .article-content figure {
            margin: 1.8em 0;
        }

        .article-content figcaption {
            text-align: center;
            color: var(--text-sub);
            font-size: 13px;
            margin-top: 8px;
        }

        .article-content a {
            color: var(--brand);
            border-bottom: 1px solid rgba(40, 106, 139, .3);
            transition: border-color .2s, color .2s;
        }

        .article-content a:hover {
            color: var(--accent);
            border-bottom-color: var(--accent);
        }

        .content-divider {
            height: 1px;
            background: var(--line);
            margin: 30px 0 24px;
        }

        .article-tag-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            margin-bottom: 22px;
        }

        .tag-label-icon {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-sub);
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 5px 13px;
            font-size: 13px;
            font-weight: 500;
            color: var(--brand-dark);
            background: var(--brand-light);
            border-radius: 999px;
            transition: all .2s ease;
        }

        .tag-chip:hover {
            background: var(--brand);
            color: #fff;
        }

        .article-action-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

        .btn-brand-strong {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            min-height: 44px;
            background: var(--brand);
            color: #fff !important;
            font-size: 15px;
            font-weight: 600;
            border-radius: 10px;
            border: 0;
            transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
        }

        .btn-brand-strong:hover,
        .btn-brand-strong:focus {
            background: var(--brand-dark);
            color: #fff;
            box-shadow: 0 10px 20px -12px rgba(23, 78, 105, .8);
            transform: translateY(-1px);
        }

        .btn-brand-strong.saved {
            background: var(--accent);
        }

        .btn-soft-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            min-height: 44px;
            background: #fff;
            color: var(--brand-dark) !important;
            font-size: 15px;
            font-weight: 600;
            border: 1px solid #B7CEDA;
            border-radius: 10px;
            transition: all .2s ease;
        }

        .btn-soft-outline:hover,
        .btn-soft-outline:focus {
            background: var(--brand-light);
            border-color: var(--brand);
            color: var(--brand-dark);
        }

        .btn-back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-sub);
            font-weight: 500;
            font-size: 14px;
            margin-top: 22px;
            transition: color .2s ease;
        }

        .btn-back-link:hover {
            color: var(--brand);
        }

        /* Empty state */
        .empty-article {
            padding: 48px 12px;
            text-align: center;
        }

        .empty-article .empty-icon {
            width: 68px;
            height: 68px;
            margin: 0 auto 18px;
            border-radius: 22px;
            background: var(--brand-light);
            color: var(--brand);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
        }

        .empty-article p {
            color: var(--text-sub);
            margin-bottom: 16px;
        }

        /* Sidebar */
        .article-aside-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 16px;
            box-shadow: var(--shadow-1);
            padding: 24px;
            margin-bottom: 22px;
            position: sticky;
            top: 100px;
        }

        .article-aside-card+.article-aside-card {
            position: static;
        }

        .side-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 9px;
            color: var(--text);
        }

        .side-title i {
            color: var(--brand);
        }

        .side-anchor-list,
        .side-category-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .side-anchor-list li+li {
            border-top: 1px solid var(--line);
        }

        .side-anchor-list a {
            display: block;
            padding: 10px 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            position: relative;
            transition: padding .2s ease, color .2s;
        }

        .side-anchor-list a:hover {
            color: var(--brand);
            padding-left: 13px;
        }

        .side-category-list li+li {
            margin-top: 10px;
        }

        .side-category-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 11px 12px;
            border: 1px solid var(--line);
            border-radius: 12px;
            color: var(--text);
            font-size: 14px;
            font-weight: 600;
            background: #fff;
            transition: border .2s ease, background .2s ease, transform .2s ease;
        }

        .side-category-list a:hover {
            background: var(--brand-light);
            border-color: var(--brand);
            transform: translateY(-1px);
        }

        .side-category-list i {
            color: var(--accent);
            width: 18px;
        }

        .side-note-line {
            font-size: 13.5px;
            color: var(--text-sub);
            line-height: 1.8;
            margin: 0;
        }

        @media (max-width: 1199px) {
            .row-article-shell {
                grid-template-columns: minmax(0, 780px);
            }
            .article-aside-wrap {
                display: none;
            }
        }

        @media (max-width: 767px) {
            .article-main-card {
                padding: 25px 18px;
                border-radius: 16px;
            }
            .article-content {
                font-size: 16px;
            }
        }

        /* related reading */
        .related-section {
            padding: 72px 0 36px;
        }

        .section-heading {
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            gap: 16px;
            margin-bottom: 30px;
        }

        .section-heading h2 {
            font-size: clamp(22px, 2vw + 8px, 28px);
            font-weight: 700;
            color: var(--text);
            margin: 0;
        }

        .section-heading p {
            margin: 5px 0 0;
            color: var(--text-sub);
            font-size: 14px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 24px;
        }

        .related-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-1);
            display: flex;
            flex-direction: column;
            transition: transform .24s ease, box-shadow .24s ease;
        }

        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-2);
        }

        .related-card-img {
            width: 100%;
            aspect-ratio: 16 / 8.6;
            object-fit: cover;
            display: block;
            border-radius: 0;
        }

        .related-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .micro-label {
            display: inline-flex;
            align-items: center;
            align-self: flex-start;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 11px;
            border-radius: 999px;
            margin-bottom: 10px;
        }

        .related-card h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 8px;
            color: var(--text);
        }

        .related-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-sub);
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .arrow-link {
            margin-top: auto;
            color: var(--brand);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .related-card .arrow-link i {
            transition: transform .2s ease;
        }

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

        @media (max-width: 992px) {
            .related-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }
        }

        @media (max-width: 640px) {
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .related-section {
                padding-top: 48px;
            }
        }

        /* CTA strip */
        .cta-strip {
            padding: 36px 0 70px;
        }

        .cta-strip-box {
            background: #fff;
            border: 1px solid var(--line);
            border-left: 5px solid var(--brand);
            border-radius: 18px;
            box-shadow: var(--shadow-1);
            padding: 28px clamp(20px, 3vw, 40px);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
        }

        .cta-strip-box h2 {
            font-size: 23px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 6px;
        }

        .cta-strip-box p {
            margin: 0;
            color: var(--text-sub);
            font-size: 14.5px;
            max-width: 720px;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        @media (max-width: 640px) {
            .cta-strip {
                padding-bottom: 90px;
            }
            .cta-strip-box {
                flex-direction: column;
                align-items: stretch;
                text-align: left;
            }
        }

        @media (min-width: 640px) {
            .mobile-bottom-bar {
                display: none !important;
            }
        }

        /* footer */
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, .8);
            border-top: 0;
        }

        .site-footer a {
            color: rgba(255, 255, 255, .75);
            transition: color .2s ease;
        }

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

        .footer-brand {
            color: #fff;
            font-size: 19px;
            font-weight: 700;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.9;
            color: rgba(255, 255, 255, .62);
            max-width: 360px;
            margin-bottom: 0;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin: 4px 0 14px;
        }

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

        .footer-link-list li {
            margin-bottom: 9px;
        }

        .footer-link-list a {
            font-size: 14px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .12);
            margin-top: 6px;
            padding: 16px 0 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, .48);
        }

        @media (max-width: 767px) {
            .site-footer {
                padding-bottom: 54px;
            }
        }

        /* toast */
        .page-toast {
            position: fixed;
            left: 50%;
            bottom: 18%;
            transform: translateX(-50%) translateY(20px);
            background: var(--brand-dark);
            color: #fff;
            padding: 12px 22px;
            border-radius: 12px;
            box-shadow: var(--shadow-2);
            font-size: 14px;
            opacity: 0;
            visibility: hidden;
            transition: opacity .25s ease, transform .25s ease, visibility .25s;
            z-index: 1060;
            display: flex;
            align-items: center;
            gap: 8px;
            min-width: 220px;
            justify-content: center;
        }

        .page-toast.show {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        .back-top {
            position: fixed;
            right: 20px;
            bottom: 24px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: none;
            align-items: center;
            justify-content: center;
            background: var(--brand);
            color: #fff;
            font-size: 17px;
            box-shadow: 0 12px 20px -12px rgba(23, 78, 105, .5);
            transition: background .2s, transform .2s;
            z-index: 1040;
        }

        .back-top.show {
            display: inline-flex;
        }

        .back-top:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }

        .mobile-bottom-bar {
            position: fixed;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 1050;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .97);
            backdrop-filter: blur(10px);
            border-top: 1px solid var(--line);
            padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
            gap: 8px;
        }

        .mobile-bottom-bar .mb-btn {
            flex: 0 1 130px;
            min-height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            border: 1px solid var(--line);
            background: #fff;
            color: var(--text);
            font-size: 13px;
            font-weight: 600;
            border-radius: 10px;
            padding: 6px 10px;
        }

        .mobile-bottom-bar .mb-btn:hover {
            background: var(--brand-light);
        }

        .mobile-bottom-bar .mb-btn.saved {
            background: var(--accent-light);
            color: var(--accent);
            border-color: transparent;
        }

        .mobile-bottom-bar .mb-btn-primary {
            background: var(--brand);
            color: #fff;
            border-color: transparent;
        }

        .mobile-bottom-bar .mb-btn-primary:hover {
            background: var(--brand-dark);
        }

        .hide-lg {
            display: none;
        }

        @media (max-width: 991.98px) {
            .hide-lg {
                display: initial;
            }
        }

/* roulang page: category2 */
:root {
            --bg: #F5F8FA;
            --brand: #286A8B;
            --brand-dark: #174E69;
            --brand-light: #E5F0F5;
            --accent: #0E9A8B;
            --accent-light: #E1F2F0;
            --text: #1D2E3A;
            --muted: #58707E;
            --line: #DDE7ED;
            --white: #FFFFFF;
            --radius-lg: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 2px 8px rgba(23, 71, 91, 0.05), 0 10px 22px -18px rgba(23, 71, 91, 0.18);
            --shadow-hover: 0 10px 22px -8px rgba(23, 71, 91, 0.14), 0 22px 34px -24px rgba(23, 71, 91, 0.26);
            --footer-bg: #0F2A3B;
        }

        html {
            scroll-behavior: smooth;
        }

        * {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.75;
            overflow-x: hidden;
        }

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

        a {
            color: var(--brand);
            text-decoration: none;
            transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
        }

        a:hover {
            color: var(--brand-dark);
        }

        button {
            font-family: inherit;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(40, 106, 139, 0.32);
            outline-offset: 2px;
        }

        .container-site {
            max-width: 1360px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-block {
            padding: 84px 0;
        }

        .section-block--tight {
            padding: 64px 0;
        }

        .section-head {
            max-width: 820px;
            margin-bottom: 38px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 13px;
            background: var(--brand-light);
            color: var(--brand-dark);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.2px;
        }

        .section-head h2 {
            font-size: clamp(24px, 2.4vw + 12px, 34px);
            font-weight: 700;
            line-height: 1.3;
            margin: 0 0 14px;
            color: var(--text);
        }

        .section-head p {
            font-size: 15.5px;
            color: var(--muted);
            margin: 0;
            max-width: 740px;
        }

        .ellipsis-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .ellipsis-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== Header Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1020;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--line);
        }

        .site-header .navbar {
            min-height: 72px;
        }

        .navbar-brand-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 800;
            color: var(--brand-dark) !important;
            white-space: nowrap;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--brand), var(--brand-dark));
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            line-height: 1;
            flex: 0 0 auto;
        }

        .site-nav .navbar-nav {
            gap: 4px;
        }

        .nav-link-custom {
            display: inline-flex;
            align-items: center;
            padding: 0.62rem 0.95rem;
            margin: 0 3px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            background: transparent;
            border: 0;
            position: relative;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .nav-link-custom:hover {
            color: var(--brand-dark);
            background: var(--brand-light);
        }

        .nav-link-custom.active {
            color: var(--brand-dark);
            background: rgba(229, 240, 245, 0.55);
        }

        .nav-link-custom.active::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 2px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .navbar-toggler-custom {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border: 1px solid var(--line);
            border-radius: 12px;
            background: #fff;
            padding: 0;
        }

        .navbar-toggler-custom:focus {
            box-shadow: none;
            border-color: var(--brand);
        }

        .mega-menu-wrap {
            position: relative;
        }

        .mega-dropdown-panel {
            display: none;
            position: absolute;
            top: calc(100% + 14px);
            right: 0;
            width: min(760px, calc(100vw - 30px));
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 24px;
            z-index: 1080;
        }

        .mega-menu-wrap:hover .mega-dropdown-panel,
        .mega-menu-wrap:focus-within .mega-dropdown-panel {
            display: block;
        }

        .mega-dropdown-panel::before {
            content: "";
            position: absolute;
            right: 90px;
            top: -7px;
            width: 14px;
            height: 14px;
            background: #fff;
            border-left: 1px solid var(--line);
            border-top: 1px solid var(--line);
            transform: rotate(45deg);
        }

        .mega-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--brand-dark);
            margin-bottom: 14px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--line);
        }

        .mega-grid {
            display: flex;
            gap: 24px;
        }

        .mega-col {
            flex: 1;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .mega-col + .mega-col {
            border-left: 1px solid var(--line);
            padding-left: 24px;
        }

        .mega-link {
            display: flex;
            align-items: baseline;
            justify-content: space-between;
            gap: 12px;
            padding: 9px 10px;
            border-radius: 10px;
            color: var(--text);
            font-size: 14px;
            font-weight: 600;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .mega-link em {
            font-style: normal;
            font-size: 12px;
            color: var(--muted);
            font-weight: 400;
            white-space: nowrap;
        }

        .mega-link:hover {
            color: var(--brand-dark);
            background: var(--brand-light);
        }

        .mega-mini-card {
            display: block;
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: 12px;
            padding: 14px 16px;
            color: var(--text);
            margin-bottom: 12px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .mega-mini-card:hover {
            border-color: rgba(40, 106, 139, 0.45);
            box-shadow: var(--shadow-card);
            color: var(--text);
        }

        .mega-mini-card strong {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .mega-mini-card span {
            font-size: 13px;
            color: var(--muted);
        }

        .mobile-offcanvas {
            --bs-offcanvas-width: 320px;
            background: #fff;
        }

        .mobile-offcanvas .offcanvas-header {
            min-height: 68px;
            border-bottom: 1px solid var(--line);
        }

        .mobile-brand {
            font-size: 16px;
            font-weight: 700;
            color: var(--brand-dark);
        }

        .mobile-nav-title {
            font-size: 13px;
            font-weight: 600;
            color: var(--muted);
            margin-bottom: 12px;
            letter-spacing: 0.2px;
        }

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

        .mobile-nav-list li + li {
            margin-top: 4px;
        }

        .mobile-nav-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 13px 14px;
            border-radius: 12px;
            color: var(--text);
            font-weight: 600;
            font-size: 15px;
        }

        .mobile-nav-list a:hover,
        .mobile-nav-list a.active {
            color: var(--brand);
            background: var(--brand-light);
        }

        /* ===== Category Hero ===== */
        .category-hero {
            position: relative;
            padding: 70px 0;
            border-bottom: 1px solid var(--line);
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url("/assets/images/backpic/back-2.webp") center / cover no-repeat;
            opacity: 0.2;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg, rgba(245, 248, 250, 0.98) 0%, rgba(245, 248, 250, 0.94) 38%, rgba(229, 240, 245, 0.78) 100%);
            z-index: 0;
        }

        .category-hero .container-site {
            position: relative;
            z-index: 1;
        }

        .category-crumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13.5px;
            color: var(--muted);
            margin-bottom: 26px;
        }

        .category-crumb a {
            color: var(--muted);
        }

        .category-crumb a:hover {
            color: var(--brand);
        }

        .category-crumb i {
            color: #a5b8c3;
            font-size: 11px;
        }

        .category-crumb span {
            color: var(--text);
            font-weight: 600;
        }

        .category-hero .row {
            margin-top: 6px;
        }

        .category-hero-title {
            font-size: clamp(28px, 4vw + 12px, 46px);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin: 0 0 16px;
        }

        .category-hero-title .hero-title-divider {
            color: var(--accent);
            font-style: normal;
            margin: 0 8px;
        }

        .category-hero-title em {
            font-size: 0.42em;
            font-weight: 600;
            color: var(--brand);
            font-style: normal;
            vertical-align: middle;
        }

        .category-hero-sub {
            max-width: 650px;
            font-size: 16.5px;
            line-height: 1.9;
            color: var(--text);
            margin: 0 0 28px;
        }

        .hero-cta {
            gap: 14px !important;
        }

        .btn-main,
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 46px;
            padding: 0 24px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 700;
            border: 0;
            text-decoration: none;
            cursor: pointer;
            transition: background 0.2s, color 0.2s, box-shadow 0.2s, border-color 0.2s, transform 0.2s;
        }

        .btn-main {
            background: var(--brand);
            color: #fff !important;
            box-shadow: 0 10px 22px -18px rgba(23, 71, 91, 0.45);
        }

        .btn-main:hover {
            background: var(--brand-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.9);
            color: var(--text);
            border: 1px solid var(--line);
        }

        .btn-ghost:hover {
            border-color: rgba(40, 106, 139, 0.4);
            background: var(--brand-light);
            color: var(--brand-dark);
            transform: translateY(-1px);
        }

        .hero-meta-list {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            padding: 0;
            margin: 26px 0 0;
            font-size: 13.5px;
            color: var(--muted);
        }

        .hero-meta-list li {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .hero-meta-list li::before {
            content: "";
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent);
            flex: 0 0 auto;
        }

        .hero-guide-card {
            background: rgba(255, 255, 255, 0.95);
            border: 1px solid var(--line);
            border-radius: 18px;
            box-shadow: var(--shadow-card);
            padding: 20px 22px;
            max-width: 480px;
            margin-left: auto;
        }

        .hero-guide-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 700;
            color: var(--brand-dark);
            margin-bottom: 8px;
        }

        .hero-guide-title i {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--accent-light);
            color: var(--accent);
        }

        .hero-guide-desc {
            font-size: 13.5px;
            color: var(--muted);
            line-height: 1.75;
            margin-bottom: 14px;
        }

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

        .hero-guide-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 9px 0;
            border-top: 1px dashed var(--line);
        }

        .hero-guide-list .step-num {
            display: flex;
            align-items: center;
            justify-content: center;
            flex: 0 0 auto;
            width: 24px;
            color: var(--brand);
            background: var(--brand-light);
            border-radius: 6px;
            font-size: 12px;
            font-weight: 700;
            line-height: 1.8;
        }

        .hero-guide-list strong {
            display: block;
            font-size: 14px;
            font-weight: 600;
        }

        .hero-guide-list small {
            font-size: 12.5px;
            color: var(--muted);
        }

        /* ===== Tag strip ===== */
        .tag-strip {
            background: #fff;
            border-bottom: 1px solid var(--line);
            padding: 16px 0;
        }

        .tag-strip-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 9px;
        }

        .tag-strip-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--brand-dark);
            margin-right: 4px;
        }

        .topic-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: 999px;
            font-size: 13px;
            color: var(--muted);
        }

        .topic-tag:hover {
            border-color: rgba(40, 106, 139, 0.4);
            color: var(--brand);
            background: var(--brand-light);
        }

        /* ===== Topic directory ===== */
        .topic-directory {
            background: #fff;
            border-bottom: 1px solid var(--line);
        }

        .topic-directory .topic-card {
            background: var(--bg);
        }

        .topic-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
        }

        .topic-card:hover {
            transform: translateY(-3px);
            border-color: rgba(40, 106, 139, 0.4);
            box-shadow: var(--shadow-hover);
        }

        .topic-thumb {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--brand-light);
        }

        .topic-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
        }

        .topic-card:hover .topic-thumb img {
            transform: scale(1.03);
        }

        .topic-body {
            padding: 18px 18px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .topic-subtitle {
            display: inline-flex;
            align-self: flex-start;
            gap: 5px;
            font-size: 12px;
            font-weight: 600;
            color: var(--brand);
            background: var(--brand-light);
            border-radius: 999px;
            padding: 4px 10px;
            margin-bottom: 12px;
        }

        .topic-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 8px;
            line-height: 1.45;
        }

        .topic-card p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
            margin: 0 0 14px;
        }

        .topic-footer {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13.5px;
            color: var(--muted);
            border-top: 1px solid var(--line);
            padding-top: 12px;
        }

        .topic-footer a {
            color: var(--brand-dark);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .topic-footer a i {
            transition: transform 0.25s ease;
            font-size: 12px;
        }

        .topic-footer a:hover i {
            transform: translateX(3px);
        }

        .topic-note {
            background: var(--brand-light);
            border-left: 3px solid var(--brand);
            border-radius: 10px;
            font-size: 14px;
            color: var(--text);
            padding: 15px 18px;
            margin-top: 32px;
        }

        /* ===== Featured stories ===== */
        .featured-section {
            background: transparent;
        }

        .featured-section .container-site .section-head {
            max-width: 700px;
        }

        .story-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 24px;
            align-items: stretch;
        }

        .story-card {
            position: relative;
            display: flex;
            flex-direction: column;
            height: 100%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--line);
            background: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }

        .story-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(40, 106, 139, 0.38);
        }

        .story-img {
            overflow: hidden;
            background: var(--brand-light);
        }

        .story-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
        }

        .story-card:hover .story-img img {
            transform: scale(1.02);
        }

        .story-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .story-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
        }

        .story-badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 11px;
            background: var(--brand-light);
            color: var(--brand-dark);
            border-radius: 999px;
            font-size: 12.5px;
            font-weight: 600;
        }

        .story-meta span {
            font-size: 12.5px;
            color: var(--muted);
        }

        .story-card h3 {
            font-size: 20px;
            line-height: 1.5;
            font-weight: 700;
            margin: 0 0 10px;
        }

        .story-card p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.85;
            margin: 0 0 16px;
        }

        .story-arrow {
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand);
        }

        .story-arrow i {
            transition: transform 0.25s ease;
            font-size: 12px;
        }

        .story-card:hover .story-arrow i {
            transform: translateX(4px);
        }

        .story-main-large {
            min-height: 100%;
        }

        .story-main-large .story-img {
            aspect-ratio: 16 / 9;
        }

        .story-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .story-card-small {
            display: flex;
            gap: 16px;
            padding: 10px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 14px;
        }

        .story-card-small .story-img {
            width: 40%;
            max-width: 180px;
            min-width: 122px;
            border-radius: 12px;
            aspect-ratio: 4 / 3;
        }

        .story-card-small .story-card-body {
            padding: 4px 8px 4px 0;
        }

        .story-card-small h3 {
            font-size: 16px;
        }

        .story-card-small p {
            font-size: 13.5px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== Guide steps ===== */
        .guide-section {
            background: #fff;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .step-item {
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
        }

        .step-item:hover {
            transform: translateY(-2px);
            border-color: rgba(40, 106, 139, 0.35);
            box-shadow: var(--shadow-card);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 34px;
            height: 34px;
            padding: 0 8px;
            border-radius: 10px;
            background: var(--brand);
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .step-item h3 {
            font-size: 16px;
            font-weight: 700;
            margin: 0 0 8px;
            line-height: 1.5;
        }

        .step-item p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.75;
            margin: 0;
        }

        /* ===== Extra read ===== */
        .more-section {
            background: transparent;
        }

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

        .more-card {
            display: flex;
            align-items: center;
            gap: 18px;
            background: #fff;
            padding: 14px;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }

        .more-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(40, 106, 139, 0.4);
        }

        .more-cover {
            flex: 0 0 116px;
            width: 116px;
            height: 116px;
            border-radius: 14px;
            overflow: hidden;
            background: var(--brand-light);
        }

        .more-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .more-card-body {
            flex: 1;
            min-width: 0;
        }

        .more-card-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin: 0 0 8px;
        }

        .more-card-body p {
            color: var(--muted);
            font-size: 13.5px;
            line-height: 1.7;
            margin: 0 0 8px;
        }

        .more-link {
            font-size: 13.5px;
            font-weight: 600;
            color: var(--brand);
        }

        .more-link i {
            font-size: 11px;
            margin-left: 5px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
            padding: 84px 0;
        }

        .faq-panel {
            max-width: 920px;
            margin: 0 auto;
        }

        .accordion-faq .accordion-item {
            border: 1px solid var(--line);
            border-radius: 14px;
            overflow: hidden;
            margin-bottom: 12px;
            background: #fff;
        }

        .accordion-faq .accordion-item:last-child {
            margin-bottom: 0;
        }

        .accordion-faq .accordion-header {
            margin: 0;
        }

        .accordion-faq .accordion-button {
            background: #fff;
            color: var(--text);
            font-size: 15.5px;
            font-weight: 600;
            padding: 16px 18px;
            line-height: 1.5;
            border: 0;
            box-shadow: none;
        }

        .accordion-faq .accordion-button::after {
            background-image: none;
            content: "\f107";
            font-family: "Font Awesome 6 Free";
            font-weight: 700;
            color: var(--brand);
            transform: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-left: auto;
            font-size: 14px;
        }

        .accordion-faq .accordion-button:not(.collapsed)::after {
            content: "\f106";
            transform: none;
        }

        .accordion-faq .accordion-button:not(.collapsed) {
            background: var(--brand-light);
            color: var(--brand-dark);
            box-shadow: none;
        }

        .accordion-faq .accordion-button:focus {
            box-shadow: none;
            outline: 0;
        }

        .accordion-faq .accordion-body {
            padding: 6px 18px 20px;
            font-size: 14.5px;
            line-height: 1.9;
            color: var(--muted);
            background: var(--bg);
            border-top: 1px solid var(--line);
        }

        /* ===== CTA ===== */
        .cta-block {
            background: var(--bg);
            border-bottom: 1px solid var(--line);
            padding: 60px 0;
        }

        .cta-panel {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 22px;
            box-shadow: var(--shadow-card);
            padding: 34px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-panel h2 {
            font-size: 26px;
            font-weight: 700;
            margin: 0 0 8px;
        }

        .cta-panel p {
            font-size: 15px;
            color: var(--muted);
            margin: 0;
            max-width: 520px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .btn-soft {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 46px;
            padding: 0 22px;
            border: 1px solid var(--line);
            border-radius: 12px;
            background: #fff;
            color: var(--text);
            font-weight: 700;
            font-size: 14px;
            transition: background 0.2s, border-color 0.2s, color 0.2s;
        }

        .btn-soft:hover {
            border-color: var(--brand);
            color: var(--brand);
            background: var(--brand-light);
        }

        .btn-main.is-saved,
        .btn-main.saved {
            background: var(--accent);
            color: #fff !important;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.72);
            padding: 46px 0 22px;
            font-size: 14px;
        }

        .footer-brand {
            font-size: 19px;
            font-weight: 800;
            color: #fff !important;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.62);
            margin: 0;
            max-width: 320px;
        }

        .footer-title {
            font-size: 15px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 14px;
        }

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

        .footer-link-list li {
            margin-bottom: 9px;
        }

        .footer-link-list a {
            color: rgba(255, 255, 255, 0.68);
            text-decoration: none;
            line-height: 1.7;
            transition: color 0.2s ease;
        }

        .footer-link-list a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 34px;
            padding-top: 18px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Back top ===== */
        .back-top-btn {
            position: fixed;
            right: 20px;
            bottom: 24px;
            width: 44px;
            height: 44px;
            border: 0;
            border-radius: 50%;
            background: var(--brand-dark);
            color: #fff;
            box-shadow: var(--shadow-hover);
            font-size: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
            z-index: 1050;
        }

        .back-top-btn.is-visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-top-btn:hover {
            background: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199.98px) {
            .nav-link-custom {
                padding: 0.6rem 0.7rem;
                font-size: 14.5px;
            }

            .mega-dropdown-panel {
                width: min(700px, calc(100vw - 30px));
            }
        }

        @media (max-width: 991.98px) {
            .section-block {
                padding: 60px 0;
            }

            .faq-section {
                padding: 60px 0;
            }

            .navbar-toggler-custom {
                display: inline-flex;
            }

            .site-nav.desktop-nav {
                display: none !important;
            }

            .category-hero {
                padding: 48px 0;
            }

            .hero-guide-card {
                margin: 20px 0 0;
                max-width: 100%;
            }

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

            .story-list {
                grid-template-columns: repeat(2, 1fr);
            }

            .step-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .more-row {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 767.98px) {
            .section-block {
                padding: 48px 0;
            }

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

            .section-head {
                margin-bottom: 28px;
            }

            .category-hero-title {
                font-size: 32px;
            }

            .category-hero-title em {
                font-size: 0.34em;
            }

            .category-hero-sub {
                font-size: 15px;
            }

            .hero-cta .btn-main,
            .hero-cta .btn-ghost {
                min-height: 44px;
                padding: 0 18px;
                font-size: 14px;
            }

            .topic-body {
                padding: 16px;
            }

            .topic-card h3 {
                font-size: 17px;
            }

            .story-list {
                grid-template-columns: 1fr;
            }

            .story-card-small .story-img {
                width: 40%;
                min-width: 110px;
                aspect-ratio: 4 / 3;
            }

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

            .cta-panel {
                padding: 24px 18px;
            }

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

            .cta-actions .btn-main,
            .cta-actions .btn-soft {
                flex: 1;
                min-height: 46px;
                padding: 0 12px;
                font-size: 13.5px;
            }
        }

        @media (max-width: 575.98px) {
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }

            .navbar-brand-custom {
                font-size: 17px;
            }

            .logo-mark {
                width: 36px;
                height: 36px;
                font-size: 17px;
            }

            .category-crumb {
                margin-bottom: 18px;
                font-size: 13px;
            }

            .category-hero-sub {
                font-size: 14.5px;
                line-height: 1.85;
            }

            .hero-meta-list {
                gap: 11px 16px;
            }

            .hero-guide-card {
                padding: 18px 16px;
            }

            .topic-footer {
                font-size: 13px;
            }

            .story-card h3 {
                font-size: 18px;
            }

            .story-meta {
                flex-wrap: wrap;
            }

            .more-card {
                flex-direction: column;
                text-align: left;
            }

            .more-cover {
                width: 100%;
                flex-basis: auto;
                height: auto;
                aspect-ratio: 16 / 9;
            }

            .cta-panel h2 {
                font-size: 20px;
            }

            .footer-title {
                margin-top: 12px;
            }

            .back-top-btn {
                right: 14px;
                bottom: 16px;
            }
        }