/* roulang page: index */
:root {
            --primary: #1E6FB8;
            --primary-dark: #155A9E;
            --accent: #38B2CE;
            --tea: #C9A86A;
            --dark: #0D3B66;
            --bg-light: #EAF3FB;
            --bg-soft: #F0F7FC;
            --card-bg: #FFFFFF;
            --text: #4A5A6E;
            --text-light: #7A8899;
            --border: #E3EDF5;
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-badge: 100px;
            --radius-small: 8px;
            --shadow-card: 0 8px 24px rgba(13, 59, 102, 0.08);
            --shadow-hover: 0 14px 34px rgba(13, 59, 102, 0.16);
            --spacing-section: 96px;
            --spacing-section-md: 64px;
            --spacing-section-sm: 48px;
            --transition-base: all 0.3s ease;
        }

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

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

        body {
            margin: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: #fff;
            -webkit-font-smoothing: antialiased;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--dark);
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-top: 0;
            margin-bottom: 0.5em;
        }

        h1 { font-size: 40px; line-height: 1.3; }
        h2 { font-size: 32px; line-height: 1.4; }
        h3 { font-size: 20px; line-height: 1.5; font-weight: 600; }

        p { margin-top: 0; margin-bottom: 1rem; }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover { color: var(--primary-dark); }

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

        .container { max-width: 1200px; padding-right: 24px; padding-left: 24px; }

        .section-padding { padding: var(--spacing-section) 0; }
        .section-header { margin-bottom: 56px; text-align: center; }
        .section-header .section-subtitle {
            color: var(--text-light);
            font-size: 16px;
            max-width: 640px;
            margin: 12px auto 0;
        }
        .section-header .section-tag {
            display: inline-block;
            background: rgba(30, 111, 184, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: var(--radius-badge);
            margin-bottom: 16px;
        }

        /* ---- Buttons ---- */
        .btn {
            border-radius: var(--radius-btn);
            padding: 12px 30px;
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition-base);
            border: 2px solid transparent;
            line-height: 1.4;
        }
        .btn:focus {
            box-shadow: 0 0 0 4px rgba(30, 111, 184, 0.15) !important;
            outline: none;
        }
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(21, 90, 158, 0.24);
        }
        .btn-primary:active {
            transform: translateY(1px) scale(0.99);
            box-shadow: none;
        }
        .btn-outline-primary {
            background: transparent;
            border-color: var(--primary);
            color: var(--primary);
        }
        .btn-outline-primary:hover {
            background: rgba(30, 111, 184, 0.12);
            border-color: var(--primary);
            color: var(--primary-dark);
        }
        .btn-tea {
            background: var(--tea);
            border-color: var(--tea);
            color: #fff;
        }
        .btn-tea:hover {
            background: #b89357;
            border-color: #b89357;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(201, 168, 106, 0.32);
        }

        /* ---- Navbar ---- */
        .navbar-custom {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(227, 237, 245, 0.9);
            padding: 14px 0;
            transition: var(--transition-base);
            z-index: 1050;
        }
        .navbar-custom.scrolled {
            background: rgba(255, 255, 255, 0.96);
            box-shadow: 0 4px 30px rgba(13, 59, 102, 0.08);
        }
        .navbar-custom .navbar-brand {
            font-size: 18px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
        }
        .navbar-custom .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
        }
        .navbar-custom .navbar-brand .brand-text {
            line-height: 1.3;
        }
        .navbar-custom .navbar-brand .brand-text small {
            display: block;
            font-size: 12px;
            font-weight: 600;
            color: var(--text-light);
            letter-spacing: 0.02em;
        }
        .navbar-custom .navbar-nav {
            gap: 4px;
        }
        .navbar-custom .nav-link {
            color: var(--text);
            font-weight: 500;
            font-size: 15px;
            padding: 10px 16px !important;
            border-radius: 30px;
            position: relative;
            transition: var(--transition-base);
        }
        .navbar-custom .nav-link:hover {
            color: var(--primary);
            background: rgba(30, 111, 184, 0.06);
        }
        .navbar-custom .nav-link::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.35s ease;
        }
        .navbar-custom .nav-link:hover::after {
            transform: scaleX(1);
        }
        .navbar-custom .nav-link.active {
            background: rgba(30, 111, 184, 0.12);
            color: var(--primary);
            font-weight: 600;
        }
        .navbar-custom .nav-link.active::after {
            transform: scaleX(1);
        }
        .navbar-custom .navbar-toggler {
            border: none;
            padding: 0;
            width: 42px;
            height: 42px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 6px;
            border-radius: 10px;
            background: rgba(30, 111, 184, 0.08);
        }
        .navbar-custom .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(30, 111, 184, 0.15) !important;
        }
        .navbar-custom .navbar-toggler .toggler-bar {
            display: block;
            width: 22px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transition: var(--transition-base);
        }
        .navbar-custom .navbar-toggler[aria-expanded="true"] .toggler-bar:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }
        .navbar-custom .navbar-toggler[aria-expanded="true"] .toggler-bar:nth-child(2) {
            opacity: 0;
        }
        .navbar-custom .navbar-toggler[aria-expanded="true"] .toggler-bar:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }

        /* ---- Hero ---- */
        .hero {
            position: relative;
            padding: 100px 0 90px;
            background: linear-gradient(145deg, var(--bg-light) 0%, var(--bg-soft) 55%, #ffffff 100%);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(56, 178, 206, 0.10) 0%, transparent 70%);
            border-radius: 50%;
        }
        .hero::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 56px;
            background: #ffffff;
            clip-path: polygon(0 40%, 100% 0, 100% 100%, 0 100%);
            z-index: 1;
        }
        .hero .hero-inner {
            position: relative;
            z-index: 2;
        }
        .hero .hero-content {
            padding-right: 30px;
        }
        .hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201, 168, 106, 0.14);
            border: 1px solid rgba(201, 168, 106, 0.4);
            color: #8a6d3b;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: var(--radius-badge);
            margin-bottom: 20px;
        }
        .hero .hero-badge i {
            font-size: 14px;
        }
        .hero h1 {
            font-size: 44px;
            line-height: 1.28;
            color: var(--dark);
            margin-bottom: 20px;
        }
        .hero .hero-desc {
            font-size: 17px;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 560px;
        }
        .hero .hero-cta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 36px;
        }
        .hero .hero-points {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .hero .hero-point {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-light);
            font-weight: 500;
        }
        .hero .hero-point i {
            color: var(--tea);
            font-size: 16px;
        }
        .hero .hero-visual {
            position: relative;
        }
        .hero .hero-visual .hero-img-wrap {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            border: 3px solid rgba(255, 255, 255, 0.9);
            background: #fff;
        }
        .hero .hero-visual .hero-img-wrap img {
            width: 100%;
            height: 460px;
            object-fit: cover;
        }
        .hero .hero-visual .hero-img-overlay {
            position: absolute;
            left: 20px;
            right: 20px;
            bottom: 20px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            border-radius: 14px;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            box-shadow: 0 4px 16px rgba(13, 59, 102, 0.12);
        }
        .hero .hero-visual .hero-img-overlay .overlay-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
        }
        .hero .hero-visual .hero-img-overlay .overlay-text {
            font-size: 14px;
            color: var(--text);
            line-height: 1.5;
        }
        .hero .hero-visual .hero-img-overlay .overlay-text strong {
            display: block;
            color: var(--dark);
            font-size: 16px;
        }

        /* ---- Section Common ---- */
        .section-title { margin-bottom: 12px; }
        .section-desc {
            color: var(--text-light);
            font-size: 16px;
            max-width: 620px;
            margin-bottom: 0;
        }
        .section-head-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }
        .section-head-row .section-desc { margin-bottom: 0; }

        /* ---- Service Cards ---- */
        .service-grid .row {
            row-gap: 32px;
        }
        .service-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(30, 111, 184, 0.3);
        }
        .service-card .service-top {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
            height: 240px;
        }
        .service-card .service-top img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .service-card:hover .service-top img {
            transform: scale(1.04);
        }
        .service-card .service-top::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            z-index: 2;
        }
        .service-card .service-number {
            position: absolute;
            top: 18px;
            left: 18px;
            background: rgba(13, 59, 102, 0.82);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.03em;
            backdrop-filter: blur(6px);
            z-index: 2;
        }
        .service-card .service-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card .service-body .service-tag {
            display: inline-block;
            background: rgba(201, 168, 106, 0.14);
            color: #8a6d3b;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            margin-bottom: 12px;
            align-self: flex-start;
            border: 1px solid rgba(201, 168, 106, 0.3);
        }
        .service-card .service-body h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }
        .service-card .service-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.65;
            margin-bottom: 16px;
        }
        .skill-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .skill-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text);
        }
        .skill-list li .skill-label {
            min-width: 72px;
            font-weight: 600;
            color: var(--dark);
        }
        .skill-bar {
            flex: 1;
            height: 6px;
            background: #e8f0f8;
            border-radius: 6px;
            overflow: hidden;
        }
        .skill-bar .skill-fill {
            height: 100%;
            border-radius: 6px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        .skill-bar .skill-fill.teal { background: linear-gradient(90deg, var(--tea), #e0c08a); }
        .skill-bar .skill-fill.green { background: linear-gradient(90deg, #4a9e8e, #74c0b2); }
        .service-card .service-stars {
            margin-top: 16px;
            display: flex;
            gap: 4px;
            color: var(--tea);
            font-size: 14px;
            border-top: 1px dashed var(--border);
            padding-top: 12px;
        }

        .service-col.offset-down { margin-top: 32px; }
        @media (min-width: 768px) {
            .service-col.offset-down { margin-top: 56px; }
        }

        /* ---- Data Panel ---- */
        .data-panel {
            background: linear-gradient(145deg, var(--bg-soft), var(--bg-light));
            border-radius: 20px;
            padding: 56px 40px;
        }
        .data-item {
            text-align: center;
            padding: 24px 16px;
        }
        .data-item .data-number {
            font-size: 48px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
            letter-spacing: -0.02em;
            font-family: inherit;
        }
        .data-item .data-unit {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-left: 2px;
        }
        .data-item .data-label {
            font-size: 14px;
            color: var(--text-light);
            margin-top: 8px;
            font-weight: 500;
        }
        .data-item .data-progress {
            margin-top: 16px;
            height: 6px;
            background: rgba(255, 255, 255, 0.8);
            border-radius: 6px;
            overflow: hidden;
        }
        .data-item .data-progress .bar {
            height: 100%;
            border-radius: 6px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transition: width 1.2s ease;
        }
        .data-item .data-progress.bar-tea .bar { background: linear-gradient(90deg, var(--tea), #e0c08a); }

        /* ---- Case Cards ---- */
        .case-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            display: flex;
            flex-direction: row;
            align-items: stretch;
            margin-bottom: 28px;
        }
        .case-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            background: #f8fbfe;
            border-color: rgba(30, 111, 184, 0.25);
        }
        .case-item.flip .case-image { order: 1; }
        .case-item.flip .case-info { order: 2; }
        .case-item .case-image {
            flex: 0 0 260px;
            min-height: 240px;
            overflow: hidden;
            position: relative;
        }
        .case-item .case-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .case-item:hover .case-image img { transform: scale(1.04); }
        .case-item .case-info {
            padding: 28px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex: 1;
        }
        .case-item .case-info .case-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(30, 111, 184, 0.08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: var(--radius-badge);
            align-self: flex-start;
            margin-bottom: 12px;
        }
        .case-item .case-info h3 {
            font-size: 20px;
            margin-bottom: 8px;
        }
        .case-item .case-info p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .case-item .case-info .case-result {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: #4a9e8e;
        }
        .case-item .case-info .case-result i { font-size: 15px; }
        @media (max-width: 767px) {
            .case-item { flex-direction: column; }
            .case-item.flip .case-image { order: 0; }
            .case-item.flip .case-info { order: 1; }
            .case-item .case-image { flex: 0 0 auto; min-height: 200px; }
        }

        /* ---- Timeline ---- */
        .timeline {
            position: relative;
            padding: 10px 0;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            bottom: 0;
            width: 2px;
            margin-left: -1px;
            background: linear-gradient(180deg, var(--primary), var(--accent), transparent);
            opacity: 0.35;
        }
        .timeline-row {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 44px;
        }
        .timeline-row.tl-left .timeline-card { margin-right: auto; width: calc(50% - 40px); text-align: right; }
        .timeline-row.tl-right .timeline-card { margin-left: auto; width: calc(50% - 40px); text-align: left; }
        .timeline-row::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            width: 38px;
            height: 38px;
            background: #fff;
            border: 3px solid var(--primary);
            border-radius: 10px;
            z-index: 2;
            box-shadow: 0 0 0 6px rgba(30, 111, 184, 0.12);
        }
        .timeline-row::after {
            content: attr(data-step);
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            color: var(--primary);
            font-size: 12px;
            font-weight: 800;
            z-index: 3;
        }
        .timeline-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }
        .timeline-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(30, 111, 184, 0.3);
        }
        .timeline-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .timeline-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.65;
            margin-bottom: 0;
        }
        .timeline-card .card-tag {
            display: inline-block;
            background: rgba(201, 168, 106, 0.14);
            border: 1px solid rgba(201, 168, 106, 0.3);
            color: #8a6d3b;
            font-size: 12px;
            font-weight: 700;
            padding: 2px 10px;
            border-radius: var(--radius-badge);
            margin-bottom: 10px;
        }
        @media (max-width: 767px) {
            .timeline::before {
                left: 18px;
                margin-left: 0;
            }
            .timeline-row {
                flex-direction: column;
                align-items: flex-start;
                padding-left: 52px;
                position: relative;
            }
            .timeline-row::before, .timeline-row::after {
                left: 18px;
                top: 18px;
                transform: translate(-50%, -50%);
            }
            .timeline-row.tl-left .timeline-card,
            .timeline-row.tl-right .timeline-card {
                margin: 0;
                width: 100%;
                text-align: left;
                padding: 16px;
            }
        }

        /* ---- News / CMS ---- */
        .news-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            transition: var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(30, 111, 184, 0.25);
        }
        .news-card .news-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 12px;
        }
        .news-card .news-badge {
            background: rgba(30, 111, 184, 0.1);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
        }
        .news-card .news-badge.badge-tea {
            background: rgba(201, 168, 106, 0.14);
            color: #8a6d3b;
            border: 1px solid rgba(201, 168, 106, 0.3);
        }
        .news-card .news-date {
            font-size: 13px;
            color: var(--text-light);
        }
        .news-card h4 {
            font-size: 18px;
            line-height: 1.5;
            margin-bottom: 10px;
            transition: var(--transition-base);
        }
        .news-card h4 a {
            color: var(--dark);
        }
        .news-card h4 a:hover {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .news-card .news-excerpt {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-card .news-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 8px;
        }
        .news-card .news-link:hover { gap: 12px; }
        .news-empty {
            background: var(--bg-soft);
            border: 2px dashed var(--border);
            border-radius: var(--radius-card);
            padding: 48px 32px;
            text-align: center;
        }
        .news-empty i {
            font-size: 48px;
            color: var(--text-light);
            margin-bottom: 12px;
            display: block;
            opacity: 0.4;
        }
        .news-empty p {
            font-size: 15px;
            color: var(--text-light);
            margin-bottom: 0;
        }

        /* ---- FAQ ---- */
        .faq-wrap .accordion-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card) !important;
            margin-bottom: 16px;
            box-shadow: 0 2px 8px rgba(13, 59, 102, 0.04);
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-wrap .accordion-item:last-child { margin-bottom: 0; }
        .faq-wrap .accordion-item:hover {
            border-color: rgba(30, 111, 184, 0.2);
            box-shadow: var(--shadow-card);
        }
        .faq-wrap .accordion-button {
            background: transparent;
            color: var(--dark);
            font-size: 16px;
            font-weight: 600;
            padding: 22px 24px;
            border: none;
            box-shadow: none !important;
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .faq-wrap .accordion-button:hover {
            color: var(--primary);
            background: rgba(30, 111, 184, 0.03);
        }
        .faq-wrap .accordion-button:focus {
            box-shadow: 0 0 0 4px rgba(30, 111, 184, 0.12) !important;
        }
        .faq-wrap .accordion-button .faq-index {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(30, 111, 184, 0.1);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
            transition: var(--transition-base);
        }
        .faq-wrap .accordion-button:not(.collapsed) .faq-index {
            background: var(--primary);
            color: #fff;
        }
        .faq-wrap .accordion-button::after {
            display: none;
        }
        .faq-wrap .accordion-button .faq-icon {
            margin-left: auto;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(30, 111, 184, 0.08);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            transition: var(--transition-base);
            flex-shrink: 0;
        }
        .faq-wrap .accordion-button:not(.collapsed) .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-wrap .accordion-body {
            padding: 4px 24px 24px 70px;
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.8;
        }

        /* ---- Contact ---- */
        .contact-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            box-shadow: var(--shadow-card);
            padding: 40px;
            height: 100%;
        }
        .contact-info-list {
            list-style: none;
            padding: 0;
            margin: 24px 0 0;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .contact-info-list li {
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }
        .contact-info-list .info-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(30, 111, 184, 0.1);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }
        .contact-info-list .info-text { font-size: 14px; color: var(--text); line-height: 1.6; }
        .contact-info-list .info-text strong { display: block; color: var(--dark); font-size: 15px; margin-bottom: 2px; }
        .contact-hours {
            margin-top: 28px;
            background: var(--bg-soft);
            border-radius: 14px;
            padding: 16px 20px;
            font-size: 14px;
            color: var(--text);
            border-left: 3px solid var(--tea);
        }
        .contact-hours .hours-tag {
            font-weight: 700;
            color: var(--dark);
        }
        .contact-form .form-control {
            border-radius: 10px;
            border: 1px solid var(--border);
            padding: 12px 16px;
            font-size: 15px;
            color: var(--text);
            background: #fff;
            transition: var(--transition-base);
        }
        .contact-form .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(30, 111, 184, 0.15);
            outline: none;
        }
        .contact-form .form-control::placeholder {
            color: #aab8c8;
        }
        .contact-form .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
        }
        .contact-form select.form-control {
            appearance: auto;
        }

        /* ---- Footer ---- */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 0;
            font-size: 14px;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: -0.01em;
        }
        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.02em;
        }
        .site-footer .footer-brand .brand-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
        }
        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition-base);
        }
        .site-footer .footer-links a:hover {
            color: var(--tea);
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .site-footer .footer-links a i {
            margin-right: 6px;
            font-size: 12px;
            color: var(--tea);
        }
        .site-footer .footer-qr {
            width: 120px;
            height: 120px;
            border-radius: 12px;
            background: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--dark);
            font-size: 13px;
            font-weight: 600;
            text-align: center;
            padding: 8px;
            border: 3px solid rgba(255, 255, 255, 0.2);
        }
        .site-footer .footer-qr i {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .site-footer .footer-qr .qr-tip {
            display: block;
            font-size: 12px;
            color: var(--text);
            margin-top: 2px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 48px;
            padding: 18px 0;
            text-align: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 13px;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--tea);
        }

        /* ---- Responsive ---- */
        @media (max-width: 991px) {
            h1 { font-size: 32px; }
            h2 { font-size: 26px; }
            .section-padding { padding: var(--spacing-section-md) 0; }
            .hero { padding: 70px 0 80px; }
            .hero h1 { font-size: 34px; }
            .hero .hero-visual .hero-img-wrap img { height: 360px; }
            .navbar-collapse {
                background: rgba(255, 255, 255, 0.98);
                border-radius: 16px;
                padding: 16px;
                margin-top: 12px;
                box-shadow: 0 10px 30px rgba(13, 59, 102, 0.1);
            }
            .navbar-custom .nav-link { text-align: center; }
            .navbar-custom .nav-link::after { display: none; }
            .navbar-custom .nav-link.active { background: rgba(30, 111, 184, 0.1); }
        }
        @media (max-width: 767px) {
            h1 { font-size: 26px; }
            h2 { font-size: 22px; }
            .section-padding { padding: var(--spacing-section-sm) 0; }
            .section-header { margin-bottom: 40px; }
            .hero { padding: 56px 0 64px; }
            .hero h1 { font-size: 28px; line-height: 1.35; }
            .hero .hero-content { padding-right: 0; }
            .hero .hero-cta { flex-direction: column; }
            .hero .hero-cta .btn { width: 100%; }
            .hero .hero-visual .hero-img-wrap img { height: 280px; }
            .service-card .service-top { height: 200px; }
            .service-card .service-body { padding: 20px; }
            .data-panel { padding: 32px 16px; }
            .data-item .data-number { font-size: 32px; }
            .case-item .case-info { padding: 20px; }
            .contact-card { padding: 24px; }
            .timeline-row.tl-left .timeline-card,
            .timeline-row.tl-right .timeline-card { padding: 16px; }
            .site-footer { padding-top: 48px; }
            .site-footer .footer-bottom { margin-top: 32px; }
        }
        @media (max-width: 575px) {
            .container { padding-right: 16px; padding-left: 16px; }
            .btn { width: 100%; text-align: center; }
            .hero .hero-points { flex-direction: column; gap: 10px; }
            .hero .hero-point { font-size: 13px; }
            .section-head-row { flex-direction: column; align-items: flex-start; }
            .case-item .case-image { min-height: 180px; }
            .contact-info-list { gap: 12px; }
            .contact-form .btn { width: 100%; }
            .footer-qr { margin: 0 auto; }
        }

/* roulang page: article */
:root {
            --primary: #1E6FB8;
            --primary-dark: #155A9E;
            --accent: #38B2CE;
            --tea: #C9A86A;
            --deep: #0D3B66;
            --bg-light: #EAF3FB;
            --bg-soft: #F0F7FC;
            --card: #FFFFFF;
            --text: #4A5A6E;
            --text-muted: #7A8899;
            --border: #E3EDF5;
            --radius: 16px;
            --radius-sm: 12px;
            --radius-pill: 100px;
            --shadow: 0 8px 24px rgba(13,59,102,0.08);
            --shadow-hover: 0 14px 34px rgba(13,59,102,0.16);
            --transition: all 0.3s ease;
            --section-gap: 96px;
            --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
        }

        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: #FFFFFF;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; }
        .container { max-width: 1200px; }

        .section { padding: var(--section-gap) 0; }
        .section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
        .section-head h2 { font-size: 32px; font-weight: 700; color: var(--deep); letter-spacing: -0.02em; margin-bottom: 10px; }
        .section-head p { color: var(--text-muted); font-size: 16px; }

        .btn { border-radius: var(--radius-sm); font-weight: 600; transition: var(--transition); }
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            padding: 12px 28px;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(30,111,184,0.3);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 10px rgba(30,111,184,0.2);
        }
        .btn-outline-primary {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 12px 28px;
        }
        .btn-outline-primary:hover {
            background: rgba(30,111,184,0.12);
            border-color: var(--primary);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-outline-primary:active { transform: translateY(0); }

        .navbar-custom {
            background: rgba(255,255,255,0.85);
            border-bottom: 1px solid var(--border);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            padding: 12px 0;
            transition: var(--transition);
        }
        .navbar-custom.scrolled {
            background: rgba(255,255,255,0.98);
            box-shadow: 0 4px 20px rgba(13,59,102,0.08);
        }
        .navbar-custom .navbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            color: var(--deep);
            font-size: 18px;
            line-height: 1.2;
            white-space: normal;
            max-width: 360px;
            margin-right: 24px;
        }
        .navbar-custom .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(30,111,184,0.25);
        }
        .navbar-custom .brand-text { font-size: 17px; }
        .navbar-custom .brand-text small {
            display: block;
            font-size: 11px;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 0.06em;
        }
        .navbar-custom .nav-link {
            color: var(--deep);
            font-size: 15px;
            font-weight: 500;
            padding: 10px 16px !important;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }
        .navbar-custom .nav-link:hover {
            color: var(--primary);
            background: transparent;
        }
        .navbar-custom .nav-link.active {
            color: var(--primary);
            background: rgba(30,111,184,0.1);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        .navbar-custom .navbar-toggler {
            border: none;
            outline: none;
            width: 40px;
            height: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            padding: 0;
        }
        .navbar-custom .toggler-bar {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--deep);
            border-radius: 2px;
            transition: var(--transition);
        }
        .navbar-custom .navbar-toggler[aria-expanded="true"] .toggler-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
        .navbar-custom .navbar-toggler[aria-expanded="true"] .toggler-bar:nth-child(2) { opacity: 0; }
        .navbar-custom .navbar-toggler[aria-expanded="true"] .toggler-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
        .navbar-custom .btn-sm { padding: 8px 22px; }

        .article-hero {
            position: relative;
            background: linear-gradient(135deg, #0D3B66 0%, #155A9E 55%, #1E6FB8 100%);
            padding: 170px 0 80px;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.jpg') no-repeat center/cover;
            opacity: 0.12;
            -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,0.8), rgba(0,0,0,0));
            mask-image: linear-gradient(to left, rgba(0,0,0,0.8), rgba(0,0,0,0));
        }
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 40px;
            background: #FFFFFF;
            border-radius: 50% 50% 0 0 / 100% 100% 0 0;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .breadcrumb-custom {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .breadcrumb-custom a { color: rgba(255,255,255,0.85); }
        .breadcrumb-custom a:hover { color: var(--tea); }
        .breadcrumb-custom .fa-chevron-right { font-size: 10px; opacity: 0.6; }
        .article-title {
            font-size: 40px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin: 0 0 20px;
            max-width: 640px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }
        .meta-item {
            font-size: 14px;
            color: rgba(255,255,255,0.75);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .meta-category {
            background: rgba(201,168,106,0.18);
            border: 1px solid rgba(201,168,106,0.45);
            color: #F0D9A8;
            border-radius: 100px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 500;
        }
        .hero-data-panel {
            background: rgba(255,255,255,0.1);
            border: 1px solid rgba(255,255,255,0.25);
            border-radius: 16px;
            padding: 24px;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.15);
            max-width: 360px;
            margin-left: auto;
        }
        .hero-data-panel .data-panel-header {
            color: rgba(255,255,255,0.9);
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .hero-data-panel .data-panel-header i { color: var(--tea); }
        .hero-data-panel .data-panel-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255,255,255,0.12);
        }
        .hero-data-panel .data-panel-row:last-child { border-bottom: none; }
        .hero-data-panel .data-panel-row span {
            color: rgba(255,255,255,0.7);
            font-size: 14px;
        }
        .hero-data-panel .data-panel-row strong {
            color: #FFFFFF;
            font-size: 20px;
            font-weight: 700;
        }

        .article-body-wrap { padding: 64px 0 80px; background: #FFFFFF; }
        .article-content {
            max-width: 820px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
        }
        .article-content h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--deep);
            margin: 44px 0 16px;
            letter-spacing: -0.01em;
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--deep);
            margin: 34px 0 12px;
        }
        .article-content p { margin: 0 0 20px; }
        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: 16px;
            margin: 28px auto;
            display: block;
            box-shadow: var(--shadow);
        }
        .article-content blockquote {
            border-left: 4px solid var(--tea);
            background: #FBF7EF;
            padding: 16px 24px;
            border-radius: 0 12px 12px 0;
            margin: 28px 0;
            color: #5D4C36;
            font-size: 15px;
            line-height: 1.8;
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 20px 4px;
            padding-left: 24px;
        }
        .article-content li { margin-bottom: 8px; }
        .article-content table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            margin: 28px 0;
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
        }
        .article-content table th {
            background: var(--bg-light);
            padding: 14px 16px;
            font-weight: 600;
            color: var(--deep);
            border-bottom: 1px solid var(--border);
            text-align: left;
        }
        .article-content table td {
            padding: 14px 16px;
            border-bottom: 1px solid var(--border);
            color: var(--text);
        }
        .article-content table tr:last-child td { border-bottom: none; }
        .article-content a { text-decoration: underline; text-underline-offset: 3px; }
        .article-content a:hover { color: var(--primary-dark); }

        .article-empty {
            min-height: 60vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 24px;
            background: linear-gradient(180deg, var(--bg-light) 0%, #FFFFFF 100%);
        }
        .article-empty .empty-inner {
            text-align: center;
            max-width: 420px;
        }
        .article-empty .empty-icon {
            width: 76px;
            height: 76px;
            margin: 0 auto 24px;
            background: var(--card);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            color: var(--primary);
            box-shadow: var(--shadow);
        }
        .article-empty h1 {
            font-size: 24px;
            font-weight: 700;
            color: var(--deep);
            margin-bottom: 10px;
        }
        .article-empty p { color: var(--text-muted); margin-bottom: 24px; }

        .related-section {
            background: var(--bg-soft);
            padding: 80px 0;
        }
        .related-section .section-head { margin-bottom: 40px; }
        .related-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(30,111,184,0.3);
        }
        .related-card .related-img-wrap {
            overflow: hidden;
            position: relative;
            height: 180px;
        }
        .related-card .related-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .related-img-wrap img { transform: scale(1.05); }
        .related-card .related-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
        .related-tag {
            display: inline-block;
            background: rgba(201,168,106,0.15);
            border: 1px solid rgba(201,168,106,0.35);
            color: #8B6F3E;
            border-radius: 100px;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .related-title { font-size: 18px; font-weight: 700; color: var(--deep); margin: 0 0 10px; }
        .related-title a { color: inherit; }
        .related-title a:hover { color: var(--primary); }
        .related-desc {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }
        .related-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .related-link i { font-size: 12px; transition: transform 0.3s ease; }
        .related-link:hover i { transform: translateX(4px); }

        .article-cta {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 28px 32px;
            margin-top: 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            box-shadow: var(--shadow);
        }
        .article-cta h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--deep);
            margin: 0 0 6px;
        }
        .article-cta p { color: var(--text-muted); margin: 0; font-size: 14px; }
        .article-cta .btn { flex-shrink: 0; }
        .article-cta::before {
            content: '';
            width: 4px;
            height: 48px;
            background: var(--tea);
            border-radius: 2px;
        }
        .article-cta { padding-left: 36px; }

        .site-footer {
            background: var(--deep);
            color: rgba(255,255,255,0.8);
            padding: 64px 0 0;
        }
        .site-footer .footer-brand {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .site-footer .footer-brand .brand-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .site-footer .footer-desc {
            color: rgba(255,255,255,0.7);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .site-footer .footer-links { list-style: none; padding: 0; margin: 0; }
        .site-footer .footer-links li { margin-bottom: 10px; }
        .site-footer .footer-links a {
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            font-size: 14px;
            display: inline-block;
            transition: var(--transition);
        }
        .site-footer .footer-links a i { font-size: 10px; margin-right: 6px; color: var(--tea); }
        .site-footer .footer-links a:hover {
            color: var(--tea);
            padding-left: 4px;
        }
        .qr-placeholder {
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            color: rgba(255,255,255,0.6);
        }
        .qr-placeholder i {
            font-size: 36px;
            color: rgba(255,255,255,0.5);
            margin-bottom: 10px;
        }
        .qr-placeholder p { font-size: 13px; margin: 8px 0 0; line-height: 1.5; }
        .footer-bottom {
            margin-top: 48px;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 20px 0;
        }
        .footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.5); margin: 0; }

        @media (max-width: 991.98px) {
            :root { --section-gap: 64px; }
            .navbar-custom .navbar-collapse {
                background: rgba(255,255,255,0.98);
                border-radius: 0 0 16px 16px;
                padding: 16px 8px;
                box-shadow: 0 12px 30px rgba(13,59,102,0.1);
                margin-top: 12px;
            }
            .navbar-custom .nav-link { padding: 10px 16px !important; }
            .hero-data-panel { margin: 30px auto 0; }
            .article-title { font-size: 30px; }
        }

        @media (max-width: 767.98px) {
            :root { --section-gap: 48px; }
            .navbar-custom .navbar-brand { max-width: 260px; font-size: 15px; }
            .navbar-custom .brand-icon { width: 36px; height: 36px; font-size: 15px; }
            .navbar-custom .brand-text small { font-size: 10px; }
            .article-hero { padding: 130px 0 56px; }
            .article-title { font-size: 24px; }
            .breadcrumb-custom { font-size: 13px; }
            .article-meta { gap: 10px; }
            .meta-item { font-size: 13px; }
            .article-body-wrap { padding: 40px 0 56px; }
            .article-content { font-size: 15px; line-height: 1.75; }
            .article-content h2 { font-size: 21px; }
            .article-content h3 { font-size: 17px; }
            .related-section { padding: 56px 0; }
            .article-cta { flex-direction: column; align-items: flex-start; text-align: left; padding: 24px; }
            .article-cta::before { width: 36px; height: 4px; }
            .article-cta .btn { width: 100%; text-align: center; }
            .site-footer { padding: 48px 0 0; }
            .footer-bottom .text-md-end { text-align: left !important; margin-top: 8px; }
        }

        @media (max-width: 520px) {
            .navbar-custom .navbar-brand { max-width: 220px; }
            .hero-data-panel { padding: 18px; }
            .hero-data-panel .data-panel-row strong { font-size: 17px; }
            .related-card .related-img-wrap { height: 150px; }
        }