/* roulang page: index */
:root {
            --bg-deep: #0B1220;
            --bg-main: #0F172A;
            --bg-card: #111827;
            --bg-card-2: #1E293B;
            --primary: #0FB5AE;
            --primary-light: #5EEAD4;
            --action: #F59E0B;
            --action-deep: #F97316;
            --heading: #F1F5F9;
            --text: #94A3B8;
            --text-weak: #64748B;
            --border: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.14);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-sm: 6px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 0 0 1px rgba(20, 184, 166, 0.2), 0 12px 32px rgba(0, 0, 0, 0.4);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
            --space-section: 96px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.75;
            background: var(--bg-main);
            color: var(--text);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-light);
        }
        p {
            margin: 0 0 1rem;
        }
        img {
            max-width: 100%;
            display: block;
        }
        .container {
            max-width: 1200px;
        }
        .btn {
            border-radius: var(--radius-btn);
            padding: 12px 28px;
            font-weight: 600;
            border: 1px solid transparent;
            transition: all 0.25s ease;
            font-size: 0.95rem;
            box-shadow: none !important;
        }
        .btn-primary-custom {
            background: linear-gradient(135deg, var(--action) 0%, var(--action-deep) 100%);
            color: #0F172A;
            border: none;
        }
        .btn-primary-custom:hover {
            color: #0F172A;
            filter: brightness(1.1);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.25) !important;
        }
        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--heading);
        }
        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .section-head {
            margin-bottom: 48px;
        }
        .section-head .sub-title {
            font-size: 0.875rem;
            color: var(--primary);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .section-head h2 {
            font-size: clamp(1.5rem, 2.5vw, 2.25rem);
            font-weight: 600;
            color: var(--heading);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-head p {
            color: var(--text);
            max-width: 640px;
            margin-bottom: 0;
        }
        .section-padding {
            padding: var(--space-section) 0;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(15, 23, 42, 0.82);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            border-bottom-color: rgba(15, 184, 174, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .navbar-custom {
            min-height: 64px;
            padding: 8px 0;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--heading);
            letter-spacing: -0.3px;
            line-height: 1.2;
        }
        .nav-brand .brand-main {
            color: var(--heading);
        }
        .nav-brand .brand-sub {
            font-size: 0.8125rem;
            font-weight: 500;
            color: var(--primary-light);
            background: rgba(15, 184, 174, 0.12);
            padding: 2px 8px;
            border-radius: 20px;
            margin-left: 4px;
            letter-spacing: 0.3px;
        }
        .nav-brand:hover {
            color: var(--heading);
        }
        .navbar-custom .navbar-nav {
            gap: 6px;
            margin-left: 28px;
        }
        .navbar-custom .nav-link {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text);
            padding: 8px 14px !important;
            position: relative;
            border-radius: 6px;
            transition: color 0.2s ease;
        }
        .navbar-custom .nav-link::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 12px;
            right: 12px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.2s ease;
        }
        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link.active {
            color: var(--primary-light);
        }
        .navbar-custom .nav-link:hover::after,
        .navbar-custom .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-search {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 0.9rem;
            transition: all 0.2s ease;
            background: transparent;
        }
        .nav-search:hover {
            color: var(--primary-light);
            border-color: var(--primary);
        }
        .nav-cta {
            padding: 9px 22px;
            font-size: 0.875rem;
        }
        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 6px 10px;
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            border-color: var(--primary);
        }
        .navbar-toggler i {
            color: var(--heading);
            font-size: 1.1rem;
        }
        @media (max-width: 991.98px) {
            .navbar-custom .navbar-nav {
                margin-left: 0;
                padding: 14px 0;
                gap: 4px;
            }
            .navbar-custom .nav-link {
                padding: 10px 12px !important;
                border-radius: 8px;
            }
            .navbar-custom .nav-link::after {
                display: none;
            }
            .navbar-custom .nav-link:hover,
            .navbar-custom .nav-link.active {
                background: rgba(15, 184, 174, 0.1);
            }
            .nav-right {
                gap: 8px;
            }
        }
        @media (max-width: 575.98px) {
            .navbar-custom {
                min-height: 56px;
            }
            .nav-brand {
                font-size: 1.15rem;
            }
            .nav-brand .brand-sub {
                font-size: 0.75rem;
                padding: 1px 6px;
            }
            .nav-cta {
                padding: 8px 14px;
                font-size: 0.8125rem;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: var(--bg-main);
            padding: 96px 0 96px;
            overflow: hidden;
            min-height: 85vh;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(15, 184, 174, 0.12) 0%, transparent 50%),
                radial-gradient(ellipse at 10% 80%, rgba(245, 158, 11, 0.06) 0%, transparent 40%);
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(15, 184, 174, 0.1);
            border: 1px solid rgba(94, 234, 212, 0.25);
            border-radius: 40px;
            padding: 6px 16px;
            font-size: 0.8125rem;
            color: var(--primary-light);
            margin-bottom: 22px;
            font-weight: 500;
        }
        .hero-content h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 700;
            color: var(--heading);
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .hero-content h1 .highlight {
            color: var(--primary-light);
        }
        .hero-lead {
            font-size: 1.0625rem;
            color: var(--text);
            line-height: 1.75;
            margin-bottom: 28px;
            max-width: 460px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            margin-bottom: 32px;
        }
        .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 22px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--text);
        }
        .trust-item i {
            color: var(--primary);
            font-size: 0.875rem;
        }
        .hero-visual {
            position: relative;
            min-height: 420px;
            border-radius: 24px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .hero-visual::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(140deg, rgba(11, 18, 32, 0.2) 0%, rgba(15, 23, 42, 0.75) 100%);
            z-index: 1;
        }
        .hero-visual::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 80% 20%, rgba(15, 184, 174, 0.2) 0%, transparent 50%);
            z-index: 2;
        }
        .floating-card {
            position: absolute;
            z-index: 3;
            background: rgba(15, 23, 42, 0.9);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 14px;
            padding: 14px 18px;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
        }
        .floating-card .fc-label {
            font-size: 0.75rem;
            color: var(--text);
            margin-bottom: 2px;
        }
        .floating-card .fc-value {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--action);
            line-height: 1.2;
        }
        .floating-card.fc-1 {
            top: 34px;
            right: 28px;
        }
        .floating-card.fc-2 {
            bottom: 40px;
            left: 28px;
        }
        @media (max-width: 991.98px) {
            .hero {
                padding: 72px 0 72px;
                min-height: auto;
            }
            .hero-visual {
                min-height: 320px;
                margin-top: 32px;
            }
        }
        @media (max-width: 575.98px) {
            .hero {
                padding: 56px 0 56px;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-lead {
                font-size: 1rem;
            }
            .hero-trust {
                gap: 16px;
            }
            .hero-visual {
                min-height: 240px;
                border-radius: 16px;
            }
            .floating-card {
                padding: 10px 14px;
            }
            .floating-card .fc-value {
                font-size: 1.1rem;
            }
        }

        /* ===== Steps ===== */
        .steps-section {
            background: var(--bg-deep);
            position: relative;
        }
        .steps-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(15, 184, 174, 0.3), transparent);
        }
        .steps-row {
            position: relative;
        }
        .steps-row::before {
            content: "";
            position: absolute;
            top: 42px;
            left: 15%;
            right: 15%;
            border-top: 2px dashed rgba(94, 234, 212, 0.25);
            z-index: 0;
        }
        .step-item {
            position: relative;
            z-index: 1;
            padding: 28px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            height: 100%;
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(15, 184, 174, 0.3);
        }
        .step-num {
            width: 84px;
            height: 84px;
            border-radius: 22px;
            background: linear-gradient(135deg, rgba(15, 184, 174, 0.15) 0%, rgba(15, 184, 174, 0.04) 100%);
            border: 1px solid rgba(94, 234, 212, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--primary-light);
            margin-bottom: 22px;
            position: relative;
        }
        .step-item h3 {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--heading);
            margin-bottom: 10px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text);
            margin-bottom: 0;
            line-height: 1.6;
        }
        @media (max-width: 767.98px) {
            .steps-row::before {
                display: none;
            }
            .step-item {
                padding: 22px 18px;
                margin-bottom: 16px;
            }
            .step-num {
                width: 64px;
                height: 64px;
                font-size: 1.25rem;
                border-radius: 18px;
            }
        }

        /* ===== Cases ===== */
        .cases-section {
            background: var(--bg-main);
        }
        .cases-stats {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .cases-stats .stats-title {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--heading);
            margin-bottom: 28px;
        }
        .stats-item {
            margin-bottom: 24px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }
        .stats-item:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .stats-value {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--action);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stats-label {
            font-size: 0.9rem;
            color: var(--text);
        }
        .cases-wall {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 26px;
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
            display: flex;
            flex-direction: column;
        }
        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(15, 184, 174, 0.25);
        }
        .case-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        .case-user .avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, rgba(15, 184, 174, 0.3) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0F172A;
            font-weight: 600;
            font-size: 0.875rem;
            flex-shrink: 0;
        }
        .case-user .user-info {
            font-size: 0.875rem;
        }
        .case-user .user-info .name {
            color: var(--heading);
            font-weight: 600;
            display: block;
            line-height: 1.3;
        }
        .case-user .user-info .type {
            color: var(--text-weak);
            font-size: 0.75rem;
        }
        .case-card blockquote {
            margin: 0 0 14px;
            font-size: 0.9rem;
            color: var(--text);
            line-height: 1.65;
        }
        .case-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.75rem;
            color: var(--primary-light);
            background: rgba(15, 184, 174, 0.08);
            padding: 4px 10px;
            border-radius: 20px;
            margin-top: auto;
            width: fit-content;
        }
        @media (max-width: 991.98px) {
            .cases-stats {
                margin-bottom: 28px;
            }
        }
        @media (max-width: 575.98px) {
            .cases-wall {
                grid-template-columns: 1fr;
            }
            .stats-value {
                font-size: 1.7rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-deep);
        }
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card) !important;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color .25s ease;
        }
        .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-left: 3px solid var(--primary);
        }
        .accordion-button {
            background: var(--bg-card);
            color: var(--heading);
            font-size: 0.9375rem;
            font-weight: 500;
            padding: 20px 24px;
            box-shadow: none !important;
            transition: background .2s ease;
        }
        .accordion-button::after {
            font-family: "Font Awesome 6 Free";
            content: "\2b";
            font-weight: 900;
            background-image: none;
            color: var(--primary);
            font-size: 1rem;
            width: 1.25rem;
            height: 1.25rem;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform .25s ease;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(15, 184, 174, 0.06);
            color: var(--primary-light);
        }
        .accordion-button:not(.collapsed)::after {
            content: "\f068";
            transform: none;
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: rgba(15, 184, 174, 0.3);
        }
        .accordion-body {
            padding: 0 24px 22px;
            color: var(--text);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .accordion-body p {
            margin-bottom: 0;
        }

        /* ===== News ===== */
        .news-section {
            background: var(--bg-main);
        }
        .news-section .section-head .view-all {
            font-size: 0.875rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 500;
            transition: gap .2s ease;
        }
        .news-section .section-head .view-all:hover {
            gap: 10px;
            color: var(--primary-light);
        }
        .news-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 22px;
        }
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(15, 184, 174, 0.3);
        }
        .news-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(15, 184, 174, 0.08);
            border: 1px solid rgba(94, 234, 212, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.1rem;
            color: var(--primary);
        }
        .news-label {
            flex: 1;
            min-width: 0;
            padding: 0 16px;
        }
        .news-label .news-title {
            color: var(--heading);
            font-size: 0.9375rem;
            font-weight: 600;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color .2s;
        }
        .news-label .news-desc {
            color: var(--text-weak);
            font-size: 0.8125rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 0;
        }
        .news-arrow {
            color: var(--text-weak);
            font-size: 0.9rem;
            flex-shrink: 0;
            transition: color .2s, transform .2s;
        }
        .news-card:hover .news-arrow {
            color: var(--primary);
            transform: translateX(4px);
        }
        .news-card:hover .news-title {
            color: var(--primary-light);
        }
        .news-card-modern {
            background: var(--bg-card-2);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 26px;
            display: flex;
            flex-direction: column;
            height: 100%;
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }
        .news-card-modern:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .news-card-modern .nc-img {
            border-radius: 12px;
            overflow: hidden;
            margin-bottom: 16px;
            aspect-ratio: 16/9;
            background: var(--bg-main);
        }
        .news-card-modern .nc-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }
        .news-card-modern:hover .nc-img img {
            transform: scale(1.03);
        }
        .news-card-modern .nc-tag {
            display: inline-block;
            font-size: 0.75rem;
            color: var(--primary-light);
            background: rgba(15, 184, 174, 0.08);
            border: 1px solid rgba(94, 234, 212, 0.2);
            border-radius: 4px;
            padding: 2px 8px;
            margin-bottom: 10px;
            width: fit-content;
        }
        .news-card-modern .nc-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--heading);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-modern .nc-summary {
            font-size: 0.875rem;
            color: var(--text);
            line-height: 1.6;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-modern .nc-meta {
            font-size: 0.8rem;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: auto;
        }
        .news-card-modern .nc-meta i {
            color: var(--primary);
            font-size: 0.8rem;
        }
        .news-empty {
            grid-column: 1 / -1;
            border: 2px dashed var(--border-strong);
            border-radius: var(--radius-card);
            padding: 56px 24px;
            text-align: center;
            color: var(--text-weak);
        }
        .news-empty i {
            font-size: 2rem;
            margin-bottom: 12px;
            color: var(--text-weak);
            display: block;
        }
        .news-empty p {
            margin-bottom: 0;
        }
        @media (max-width: 767.98px) {
            .news-list {
                grid-template-columns: 1fr;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-deep);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(15, 184, 174, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -100px;
            left: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-panel {
            background: linear-gradient(135deg, rgba(17, 24, 39, 0.9) 0%, rgba(15, 23, 42, 0.95) 100%);
            border: 1px solid rgba(94, 234, 212, 0.2);
            border-radius: 24px;
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center bottom, rgba(15, 184, 174, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-panel h2 {
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 16px;
        }
        .cta-panel p {
            color: var(--text);
            max-width: 480px;
            margin: 0 auto 32px;
            font-size: 1rem;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }
        .cta-trust {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 22px;
            font-size: 0.8125rem;
            color: var(--text-weak);
        }
        .cta-trust span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .cta-trust i {
            color: var(--primary);
            font-size: 0.8rem;
        }
        @media (max-width: 575.98px) {
            .cta-panel {
                padding: 44px 24px;
                border-radius: 18px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #080D18;
            border-top: 1px solid rgba(94, 234, 212, 0.15);
            padding: 70px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }
        .footer-brand .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 12px;
        }
        .footer-brand .logo-text span {
            color: var(--primary-light);
        }
        .footer-brand p {
            font-size: 0.875rem;
            color: var(--text);
            margin-bottom: 18px;
            max-width: 280px;
            line-height: 1.65;
        }
        .footer-col h4 {
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--heading);
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: 0.875rem;
            color: var(--text);
            transition: color .2s ease, padding-left .2s ease;
        }
        .footer-col ul a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8125rem;
            color: var(--text-weak);
        }
        .footer-bottom a {
            color: var(--text-weak);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                flex-direction: column;
            }
        }

        /* ===== Section transitions ===== */
        .section-line {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(94, 234, 212, 0.15), transparent);
            border: none;
            margin: 0;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0FB5AE;
            --primary-light: #5EEAD4;
            --accent: #F59E0B;
            --accent-hover: #F97316;
            --bg-dark: #0B1220;
            --bg-navy: #0F172A;
            --bg-panel: #111827;
            --bg-card: #1E293B;
            --text-heading: #F1F5F9;
            --text-body: #94A3B8;
            --text-dim: #64748B;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-primary: rgba(20, 184, 166, 0.3);
            --radius-card: 16px;
            --radius-btn: 8px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-hover: 0 0 0 1px rgba(20, 184, 166, 0.2), 0 12px 32px rgba(0, 0, 0, 0.4);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
            --transition: all 0.25s ease;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-dark);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--primary-light);
        }

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

        .container {
            max-width: 1200px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(15, 23, 42, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(20, 184, 166, 0.15);
            height: 64px;
            display: flex;
            align-items: center;
        }

        .navbar-custom {
            padding: 0;
            width: 100%;
        }

        .navbar-brand {
            display: flex;
            align-items: baseline;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-heading) !important;
            line-height: 1.2;
            padding: 0;
            margin-right: 2rem;
        }

        .navbar-brand .brand-sub {
            font-size: 0.8rem;
            font-weight: 500;
            color: var(--primary-light);
            margin-left: 0.25rem;
            letter-spacing: 0.5px;
            background: rgba(15, 184, 174, 0.12);
            padding: 2px 8px;
            border-radius: 6px;
        }

        .navbar-nav {
            gap: 1.5rem;
        }

        .nav-link {
            color: var(--text-body) !important;
            font-size: 0.9375rem;
            font-weight: 500;
            padding: 0.5rem 0 !important;
            position: relative;
            transition: var(--transition);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.2s ease;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--primary-light) !important;
        }

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

        .nav-right {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .nav-search {
            color: var(--text-body);
            font-size: 1rem;
            padding: 8px;
            border-radius: 50%;
            background: transparent;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
        }

        .nav-search:hover {
            color: var(--primary-light);
            background: rgba(15, 184, 174, 0.1);
        }

        .nav-cta {
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            font-size: 0.875rem;
            font-weight: 600;
            background: var(--accent);
            color: #0F172A !important;
            border: none;
            transition: var(--transition);
        }

        .nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(249, 115, 22, 0.3);
            color: #0F172A !important;
        }

        .navbar-toggler {
            border: none;
            color: var(--text-heading);
            font-size: 1.25rem;
            padding: 0.25rem 0.5rem;
        }

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

        @media (max-width: 991.98px) {
            .site-header {
                height: 56px;
            }

            .navbar-collapse {
                background: rgba(15, 23, 42, 0.95);
                padding: 1rem 1.5rem;
                border-radius: 0 0 12px 12px;
                margin-top: 0.5rem;
            }

            .navbar-nav {
                gap: 0.5rem;
            }

            .nav-right {
                margin-top: 1rem;
                margin-bottom: 0.5rem;
            }
        }

        /* ===== 文章 Hero ===== */
        .article-hero {
            background: linear-gradient(rgba(11, 18, 32, 0.92), rgba(11, 18, 32, 0.92)),
                        url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 80px 0 60px;
            border-bottom: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(15, 184, 174, 0.15), transparent 70%);
            pointer-events: none;
        }

        .breadcrumb-custom {
            font-size: 0.8125rem;
            color: var(--text-dim);
            margin-bottom: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.5rem;
        }

        .breadcrumb-custom a {
            color: var(--text-dim);
            transition: var(--transition);
        }

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

        .breadcrumb-custom .separator {
            opacity: 0.5;
        }

        .breadcrumb-custom .current {
            color: var(--text-heading);
        }

        .article-hero .article-title {
            color: var(--text-heading);
            font-size: clamp(1.8rem, 3.5vw, 2.75rem);
            line-height: 1.3;
            font-weight: 700;
            margin-bottom: 1rem;
            max-width: 820px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: var(--text-dim);
            font-size: 0.875rem;
            margin-top: 1rem;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }

        .article-meta i {
            color: var(--primary);
            font-size: 0.8125rem;
        }

        @media (max-width: 767.98px) {
            .article-hero {
                padding: 50px 0 40px;
            }

            .article-title {
                font-size: 1.6rem !important;
            }
        }

        /* ===== 正文阅读区（浅色） ===== */
        .article-body-wrap {
            background: #F8FAFC;
            padding: 60px 0 80px;
            border-top: 4px solid var(--primary);
        }

        .article-content {
            max-width: 780px;
            margin: 0 auto;
            font-size: 1.0625rem;
            line-height: 1.8;
            color: #1E293B;
            background: #FFFFFF;
            padding: 40px 48px;
            border-radius: var(--radius-card);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #0F172A;
            margin: 1.8em 0 0.8em;
            line-height: 1.3;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: #1E293B;
            margin: 1.6em 0 0.6em;
        }

        .article-content p {
            margin-bottom: 1.2em;
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: 1.2em;
            padding-left: 1.5em;
        }

        .article-content li {
            margin-bottom: 0.4em;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding-left: 1.25rem;
            color: #475569;
            font-style: normal;
            background: #F1F5F9;
            padding: 1rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5em 0;
        }

        .article-content img {
            border-radius: 12px;
            margin: 1.5em 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }

        .article-content pre {
            background: #0F172A;
            color: #E2E8F0;
            padding: 1.25rem;
            border-radius: 12px;
            overflow-x: auto;
            font-size: 0.9rem;
            margin: 1.5em 0;
        }

        .article-content code {
            background: #F1F5F9;
            padding: 0.2em 0.4em;
            border-radius: 4px;
            font-size: 0.9em;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 0.9375rem;
        }

        .article-content th,
        .article-content td {
            border: 1px solid #E2E8F0;
            padding: 0.75rem 1rem;
            text-align: left;
        }

        .article-content th {
            background: #F1F5F9;
            font-weight: 600;
        }

        /* 内容未找到 */
        .article-not-found {
            max-width: 780px;
            margin: 0 auto;
            background: #FFFFFF;
            border: 2px dashed #CBD5E1;
            border-radius: var(--radius-card);
            padding: 60px 40px;
            text-align: center;
        }

        .article-not-found .empty-icon {
            font-size: 3rem;
            color: #94A3B8;
            margin-bottom: 1rem;
        }

        .article-not-found p {
            color: #64748B;
            font-size: 1.125rem;
            margin-bottom: 1.5rem;
        }

        /* ===== 文章相关推荐 ===== */
        .article-related {
            max-width: 780px;
            margin: 60px auto 0;
        }

        .article-related .related-title {
            font-size: 1.375rem;
            font-weight: 700;
            color: #0F172A;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .related-empty {
            background: #FFFFFF;
            border: 1px solid #E2E8F0;
            border-radius: var(--radius-card);
            padding: 32px;
            text-align: center;
            color: #94A3B8;
            font-size: 0.9375rem;
        }

        .related-empty i {
            margin-right: 0.5rem;
            color: #CBD5E1;
        }

        .related-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .related-card {
            background: #FFFFFF;
            border: 1px solid #E2E8F0;
            border-radius: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
            border-color: var(--primary);
        }

        .related-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }

        .related-card .card-body {
            padding: 1.25rem;
        }

        .related-card .card-body h5 {
            font-size: 1rem;
            font-weight: 600;
            color: #0F172A;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .related-card .card-body .date {
            font-size: 0.8125rem;
            color: #94A3B8;
        }

        @media (max-width: 767.98px) {
            .related-cards {
                grid-template-columns: 1fr;
            }

            .article-content {
                padding: 24px 20px;
                font-size: 1rem;
            }
        }

        /* ===== 返回入口 ===== */
        .article-back-nav {
            max-width: 780px;
            margin: 40px auto 0;
            text-align: center;
        }

        .article-back-nav .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            transition: var(--transition);
        }

        .article-back-nav .btn-back:hover {
            background: var(--primary);
            color: #0F172A;
        }

        /* ===== CTA 窄条 ===== */
        .article-cta {
            background: var(--bg-navy);
            border-top: 1px solid var(--border-light);
            padding: 50px 0;
            text-align: center;
        }

        .article-cta h2 {
            color: var(--text-heading);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .article-cta p {
            color: var(--text-body);
            margin-bottom: 1.25rem;
        }

        .article-cta .btn-cta {
            background: var(--accent);
            color: #0F172A;
            font-weight: 700;
            padding: 12px 32px;
            border-radius: var(--radius-btn);
            border: none;
            transition: var(--transition);
            display: inline-block;
        }

        .article-cta .btn-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(249, 115, 22, 0.3);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #080D17;
            border-top: 1px solid rgba(15, 184, 174, 0.2);
            padding: 70px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2.5rem;
        }

        .footer-brand .logo-text {
            color: var(--text-heading);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .footer-brand .logo-text span {
            color: var(--primary-light);
            font-size: 0.9rem;
            background: rgba(15, 184, 174, 0.12);
            padding: 2px 10px;
            border-radius: 6px;
            margin-left: 0.25rem;
            font-weight: 500;
        }

        .footer-brand p {
            color: var(--text-dim);
            font-size: 0.9375rem;
            max-width: 280px;
        }

        .footer-col h4 {
            color: var(--text-heading);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 1.25rem;
        }

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

        .footer-col ul li {
            margin-bottom: 0.75rem;
            color: var(--text-body);
            font-size: 0.9375rem;
        }

        .footer-col ul li a {
            color: var(--text-body);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-col ul li i {
            color: var(--primary);
            margin-right: 0.5rem;
            width: 16px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            color: var(--text-dim);
            font-size: 0.875rem;
            gap: 0.75rem;
        }

        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }

        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.75rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #14B8A6;
            --primary-light: #5EEAD4;
            --primary-glow: rgba(20, 184, 166, 0.2);
            --accent: #F59E0B;
            --accent-hover: #F97316;
            --bg-dark: #0B1220;
            --bg-mid: #0F172A;
            --bg-card: #111827;
            --bg-card-hover: #1E293B;
            --text-title: #F1F5F9;
            --text-body: #94A3B8;
            --text-muted: #64748B;
            --border-light: rgba(255, 255, 255, 0.08);
            --border-primary: rgba(20, 184, 166, 0.35);
            --radius-card: 14px;
            --radius-btn: 9px;
            --radius-sm: 6px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 0 0 1px rgba(20, 184, 166, 0.2), 0 12px 32px rgba(0, 0, 0, 0.4);
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
            --spacer-section: 96px;
            --spacer-section-mobile: 64px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-dark);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 0.9375rem;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: var(--primary-light);
        }

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

        button, input {
            font-family: inherit;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 0.5em;
            font-weight: 600;
        }

        .container {
            max-width: 1200px;
        }

        .text-primary {
            color: var(--primary) !important;
        }

        .btn-primary-custom {
            display: inline-block;
            background: linear-gradient(135deg, #F59E0B 0%, #F97316 100%);
            color: #0F172A;
            font-weight: 600;
            font-size: 0.9375rem;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            transition: all 0.25s ease;
            box-shadow: none;
            line-height: 1.4;
            text-align: center;
            cursor: pointer;
        }

        .btn-primary-custom:hover {
            background: linear-gradient(135deg, #FBBF24 0%, #F97316 100%);
            color: #0F172A;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.25);
        }

        .btn-primary-custom:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        .btn-ghost-custom {
            display: inline-block;
            background: transparent;
            color: #E2E8F0;
            font-weight: 500;
            font-size: 0.9375rem;
            padding: 11px 28px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: all 0.25s ease;
            line-height: 1.4;
            text-align: center;
            cursor: pointer;
        }

        .btn-ghost-custom:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(20, 184, 166, 0.06);
            text-decoration: none;
            transform: translateY(-2px);
        }

        .btn-ghost-custom:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        .badge-custom {
            display: inline-block;
            background: rgba(20, 184, 166, 0.1);
            border: 1px solid rgba(20, 184, 166, 0.4);
            color: var(--primary-light);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 2px 10px;
            border-radius: 4px;
            letter-spacing: 0.02em;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(15, 23, 42, 0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid transparent;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
            height: 64px;
        }

        .site-header.scrolled {
            border-bottom-color: rgba(20, 184, 166, 0.25);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .navbar-custom {
            padding: 0;
            min-height: 64px;
            flex-wrap: nowrap;
        }

        .nav-brand {
            font-size: 1.375rem;
            font-weight: 700;
            color: var(--text-title) !important;
            letter-spacing: 0.01em;
            white-space: nowrap;
            display: flex;
            align-items: baseline;
            gap: 4px;
            padding: 0;
        }

        .nav-brand .brand-sub {
            font-size: 0.8125rem;
            font-weight: 500;
            color: var(--primary-light);
            background: rgba(20, 184, 166, 0.12);
            border: 1px solid rgba(20, 184, 166, 0.3);
            padding: 1px 8px;
            border-radius: 4px;
            letter-spacing: 0.04em;
        }

        .navbar-nav {
            margin-left: 32px;
            gap: 4px;
        }

        .navbar-nav .nav-link {
            color: #A3B3C9;
            font-size: 0.9375rem;
            font-weight: 400;
            padding: 8px 16px;
            border-radius: 8px;
            position: relative;
            transition: color 0.2s ease;
        }

        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.2s ease;
        }

        .navbar-nav .nav-link:hover {
            color: var(--primary-light);
        }

        .navbar-nav .nav-link:hover::after {
            transform: scaleX(1);
        }

        .navbar-nav .nav-link.active {
            color: var(--primary-light);
            font-weight: 500;
        }

        .navbar-nav .nav-link.active::after {
            transform: scaleX(1);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .nav-search {
            color: #A3B3C9;
            font-size: 1rem;
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            transition: color 0.2s, background 0.2s;
        }

        .nav-search:hover {
            color: var(--primary-light);
            background: rgba(20, 184, 166, 0.08);
        }

        .nav-cta {
            font-size: 0.875rem;
            padding: 9px 20px;
        }

        .navbar-toggler {
            border: none;
            color: #E2E8F0;
            font-size: 1.375rem;
            padding: 4px 8px;
            background: transparent;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid rgba(20, 184, 166, 0.5);
            border-radius: 6px;
        }

        .navbar-toggler i {
            color: #E2E8F0;
        }

        @media (max-width: 991.98px) {
            .site-header {
                height: 56px;
            }

            .navbar-custom {
                min-height: 56px;
            }

            .navbar-brand {
                font-size: 1.25rem;
            }

            .navbar-collapse {
                background: rgba(15, 23, 42, 0.97);
                border-radius: 0 0 14px 14px;
                padding: 16px 20px;
                border: 1px solid var(--border-light);
                border-top: none;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
            }

            .navbar-nav {
                margin-left: 0;
                gap: 0;
                padding: 8px 0;
            }

            .navbar-nav .nav-link {
                padding: 10px 12px;
            }

            .navbar-nav .nav-link::after {
                display: none;
            }

            .navbar-nav .nav-link.active {
                background: rgba(20, 184, 166, 0.1);
                border-radius: 8px;
            }

            .nav-right {
                padding-top: 12px;
                border-top: 1px solid var(--border-light);
                width: 100%;
                justify-content: flex-start;
                gap: 12px;
            }

            .nav-cta {
                flex: 1;
                text-align: center;
            }
        }

        /* ===== Category Hero ===== */
        .category-hero {
            position: relative;
            padding: 72px 0 64px;
            background: linear-gradient(135deg, rgba(11, 18, 32, 0.95) 0%, rgba(15, 23, 42, 0.8) 50%, rgba(11, 18, 32, 0.92) 100%);
            border-bottom: 1px solid var(--border-light);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }

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

        .category-hero::after {
            content: "";
            position: absolute;
            top: -120px;
            right: -80px;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(20, 184, 166, 0.18) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .category-hero .hero-badge {
            display: inline-block;
            font-size: 0.8125rem;
            color: var(--primary-light);
            border: 1px solid rgba(20, 184, 166, 0.4);
            background: rgba(20, 184, 166, 0.08);
            border-radius: 20px;
            padding: 4px 14px;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }

        .category-hero h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }

        .category-hero .hero-desc {
            font-size: 1.0625rem;
            color: var(--text-body);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ===== Content Section ===== */
        .content-section {
            padding: var(--spacer-section) 0;
            background: var(--bg-dark);
        }

        .content-section.alt-bg {
            background: var(--bg-mid);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .content-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 320px;
            gap: 48px;
            align-items: start;
        }

        .article-body {
            min-width: 0;
        }

        .article-body .section-block {
            margin-bottom: 56px;
            padding-bottom: 8px;
        }

        .article-body .section-block:last-child {
            margin-bottom: 0;
        }

        .article-body h2 {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 600;
            margin-bottom: 20px;
            padding-bottom: 14px;
            position: relative;
        }

        .article-body h2::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 48px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), transparent);
            border-radius: 3px;
        }

        .article-body h3 {
            font-size: 1.1875rem;
            font-weight: 600;
            margin-bottom: 12px;
            margin-top: 24px;
        }

        .article-body p {
            color: var(--text-body);
            line-height: 1.85;
            margin-bottom: 16px;
            font-size: 0.9375rem;
        }

        .article-body .content-img {
            margin: 24px 0;
            border-radius: var(--radius-card);
            position: relative;
            overflow: hidden;
            border: 1px solid var(--border-light);
        }

        .article-body .content-img img {
            width: 100%;
            display: block;
            object-fit: cover;
        }

        .article-body .img-caption {
            font-size: 0.8125rem;
            color: var(--text-muted);
            text-align: center;
            padding: 12px 16px 14px;
            background: rgba(17, 24, 39, 0.6);
        }

        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 28px;
            margin: 24px 0;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .guide-card:hover {
            border-color: rgba(20, 184, 166, 0.35);
            box-shadow: var(--shadow-hover);
        }

        .guide-card .card-icon {
            display: inline-flex;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(20, 184, 166, 0.12);
            color: var(--primary-light);
            font-size: 1.25rem;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .guide-card h4 {
            font-size: 1.0625rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-title);
        }

        .guide-card p {
            font-size: 0.875rem;
            margin-bottom: 0;
            line-height: 1.75;
        }

        .step-timeline {
            list-style: none;
            padding: 0;
            margin: 24px 0 0;
        }

        .step-timeline li {
            position: relative;
            padding-left: 56px;
            padding-bottom: 36px;
        }

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

        .step-timeline li::before {
            content: "";
            position: absolute;
            left: 20px;
            top: 44px;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, rgba(20, 184, 166, 0.4), rgba(20, 184, 166, 0.05));
        }

        .step-timeline li:last-child::before {
            display: none;
        }

        .step-timeline .step-num {
            position: absolute;
            left: 0;
            top: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(20, 184, 166, 0.12);
            border: 1px solid rgba(20, 184, 166, 0.35);
            color: var(--primary-light);
            font-size: 1rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .step-timeline .step-body h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-title);
        }

        .step-timeline .step-body p {
            font-size: 0.875rem;
            margin-bottom: 0;
            color: var(--text-body);
        }

        .info-box {
            background: rgba(20, 184, 166, 0.06);
            border: 1px solid rgba(20, 184, 166, 0.2);
            border-radius: var(--radius-card);
            padding: 20px 24px;
            margin: 20px 0;
            display: flex;
            gap: 16px;
        }

        .info-box i {
            color: var(--primary-light);
            font-size: 1.25rem;
            margin-top: 2px;
        }

        .info-box p {
            margin-bottom: 0;
            font-size: 0.875rem;
        }

        .sidebar {
            position: sticky;
            top: 88px;
        }

        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 24px;
            margin-bottom: 24px;
        }

        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-light);
        }

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

        .sidebar-nav li {
            margin-bottom: 2px;
        }

        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #A3B3C9;
            font-size: 0.875rem;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all 0.2s ease;
        }

        .sidebar-nav a i {
            font-size: 0.75rem;
            color: var(--primary);
            transition: transform 0.2s ease;
        }

        .sidebar-nav a:hover {
            background: rgba(20, 184, 166, 0.08);
            color: var(--primary-light);
            text-decoration: none;
        }

        .sidebar-nav a:hover i {
            transform: translateX(3px);
        }

        .sidebar-contact {
            background: linear-gradient(135deg, rgba(20, 184, 166, 0.1) 0%, rgba(15, 23, 42, 0.6) 100%);
            border: 1px solid rgba(20, 184, 166, 0.25);
            text-align: center;
        }

        .sidebar-contact i {
            font-size: 2rem;
            color: var(--primary-light);
            margin-bottom: 12px;
            display: block;
        }

        .sidebar-contact h4 {
            border-bottom: none;
            padding-bottom: 0;
            font-size: 1.0625rem;
        }

        .sidebar-contact p {
            font-size: 0.8125rem;
            margin-bottom: 16px;
            color: var(--text-muted);
        }

        .sidebar-contact .btn-primary-custom {
            width: 100%;
            padding: 10px 20px;
            font-size: 0.875rem;
        }

        /* ===== Mobile TOC ===== */
        .mobile-toc {
            display: none;
            margin-bottom: 32px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 20px;
        }

        .mobile-toc summary {
            font-weight: 600;
            font-size: 0.9375rem;
            color: var(--text-title);
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .mobile-toc summary::-webkit-details-marker {
            display: none;
        }

        .mobile-toc summary i {
            color: var(--primary);
            font-size: 0.875rem;
            transition: transform 0.2s ease;
        }

        .mobile-toc[open] summary i {
            transform: rotate(180deg);
        }

        .mobile-toc ul {
            list-style: none;
            padding: 12px 0 0;
            margin: 12px 0 0;
            border-top: 1px solid var(--border-light);
        }

        .mobile-toc li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
            font-size: 0.875rem;
            color: #A3B3C9;
        }

        .mobile-toc li a i {
            font-size: 0.75rem;
            color: var(--primary);
        }

        .mobile-toc li a:hover {
            color: var(--primary-light);
            text-decoration: none;
        }

        @media (max-width: 991.98px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .mobile-toc {
                display: block;
            }

            .sidebar {
                display: none;
            }

            .content-section {
                padding: var(--spacer-section-mobile) 0;
            }
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: var(--spacer-section) 0;
            background: var(--bg-mid);
            border-top: 1px solid var(--border-light);
        }

        .faq-section .section-title {
            text-align: center;
            font-size: clamp(1.5rem, 2.5vw, 2.125rem);
            font-weight: 600;
            margin-bottom: 12px;
        }

        .faq-section .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 48px;
            font-size: 0.9375rem;
        }

        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 10px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(20, 184, 166, 0.35);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

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

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-title);
            font-size: 0.9375rem;
            font-weight: 500;
            padding: 20px 24px 20px 24px;
            box-shadow: none;
            position: relative;
            border-radius: 0;
        }

        .faq-accordion .accordion-button::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--primary);
            opacity: 0;
            transition: opacity 0.25s ease;
            border-radius: 0 3px 3px 0;
        }

        .faq-accordion .accordion-button:not(.collapsed)::before {
            opacity: 1;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(20, 184, 166, 0.04);
            color: var(--primary-light);
        }

        .faq-accordion .accordion-button:not(.collapsed) .accordion-icon::after {
            display: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid rgba(20, 184, 166, 0.3);
        }

        .faq-accordion .accordion-icon {
            width: 22px;
            height: 22px;
            position: relative;
            flex-shrink: 0;
            margin-right: 0;
        }

        .faq-accordion .accordion-icon::before,
        .faq-accordion .accordion-icon::after {
            content: "";
            position: absolute;
            background: var(--primary-light);
            border-radius: 2px;
            transition: all 0.25s ease;
        }

        .faq-accordion .accordion-icon::before {
            width: 2px;
            height: 12px;
            top: 5px;
            left: 10px;
        }

        .faq-accordion .accordion-icon::after {
            width: 12px;
            height: 2px;
            top: 10px;
            left: 5px;
        }

        .faq-accordion .accordion-button.collapsed .accordion-icon::before {
            transform: rotate(90deg);
        }

        .faq-accordion .accordion-body {
            background: transparent;
            color: var(--text-body);
            font-size: 0.875rem;
            line-height: 1.75;
            padding: 0 24px 20px 28px;
            border-top: none;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: var(--spacer-section) 0;
            background: var(--bg-dark);
        }

        .cta-panel {
            position: relative;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(11, 18, 32, 0.98) 100%);
            border: 1px solid rgba(20, 184, 166, 0.25);
            border-radius: 20px;
            padding: 72px 64px;
            text-align: center;
            overflow: hidden;
        }

        .cta-panel::before {
            content: "";
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 200px;
            background: radial-gradient(ellipse, rgba(20, 184, 166, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-panel h2 {
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
        }

        .cta-panel p {
            color: var(--text-body);
            font-size: 1rem;
            max-width: 480px;
            margin: 0 auto 32px;
            position: relative;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }

        .cta-trust {
            display: flex;
            justify-content: center;
            gap: 28px;
            margin-top: 40px;
            position: relative;
            flex-wrap: wrap;
        }

        .cta-trust .trust-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8125rem;
            color: var(--text-muted);
        }

        .cta-trust .trust-item i {
            color: var(--primary);
            font-size: 0.875rem;
        }

        @media (max-width: 767.98px) {
            .cta-panel {
                padding: 48px 24px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: rgba(8, 13, 23, 0.98);
            border-top: 1px solid rgba(20, 184, 166, 0.2);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand .logo-text {
            font-size: 1.375rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .footer-brand .logo-text span {
            color: var(--primary-light);
            font-size: 0.875rem;
            font-weight: 500;
            margin-left: 6px;
            background: rgba(20, 184, 166, 0.12);
            padding: 2px 10px;
            border-radius: 4px;
            border: 1px solid rgba(20, 184, 166, 0.3);
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.875rem;
            line-height: 1.7;
            max-width: 280px;
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: 16px;
        }

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

        .footer-col li {
            margin-bottom: 10px;
            font-size: 0.875rem;
            color: var(--text-body);
        }

        .footer-col a {
            color: var(--text-body);
            transition: color 0.2s ease;
        }

        .footer-col a:hover {
            color: var(--primary-light);
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            color: var(--text-muted);
            font-size: 0.8125rem;
        }

        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Base Responsive ===== */
        @media (max-width: 991.98px) {
            :root {
                --spacer-section: 72px;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --spacer-section: 56px;
            }

            body {
                font-size: 0.9375rem;
            }

            h1 {
                font-size: 1.75rem !important;
            }

            h2 {
                font-size: 1.375rem !important;
            }
        }

/* roulang page: category2 */
:root {
        --primary: #14B8A6;
        --primary-light: #5EEAD4;
        --primary-dark: #0F766E;
        --accent: #F59E0B;
        --accent-light: #F97316;
        --bg-deep: #0B1220;
        --bg-body: #0F172A;
        --bg-card: #111827;
        --bg-card-hover: #1E293B;
        --text-title: #F1F5F9;
        --text-body: #94A3B8;
        --text-muted: #64748B;
        --border: rgba(255, 255, 255, 0.08);
        --border-light: rgba(255, 255, 255, 0.14);
        --radius-card: 14px;
        --radius-btn: 10px;
        --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
        --shadow-hover: 0 0 0 1px rgba(20, 184, 166, 0.2), 0 12px 32px rgba(0, 0, 0, 0.4);
        --transition: all 0.25s ease;
        --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "HarmonyOS Sans SC", sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-stack);
        background: var(--bg-body);
        color: var(--text-body);
        line-height: 1.75;
        font-size: 1rem;
        overflow-x: hidden;
    }

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

    a:hover {
        color: var(--primary-light);
        text-decoration: none;
    }

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

    .container {
        max-width: 1200px;
    }

    .text-primary {
        color: var(--primary) !important;
    }
    .text-accent {
        color: var(--accent) !important;
    }
    .bg-primary {
        background-color: var(--primary) !important;
    }

    /* ===== Header Nav ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1030;
        background: rgba(15, 23, 42, 0.82);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(20, 184, 166, 0.12);
    }

    .site-header .container {
        position: relative;
    }

    .site-header.scrolled {
        border-bottom-color: rgba(20, 184, 166, 0.3);
    }

    .navbar-custom {
        min-height: 64px;
        padding-top: 0;
        padding-bottom: 0;
    }

    .nav-brand {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--text-title) !important;
        letter-spacing: 0.01em;
        padding-top: 0.6rem;
        padding-bottom: 0.6rem;
    }

    .nav-brand .brand-sub {
        color: var(--primary-light);
        font-size: 0.85rem;
        font-weight: 400;
        margin-left: 4px;
        letter-spacing: 0.05em;
    }

    .navbar-custom .navbar-nav .nav-link {
        color: var(--text-body);
        padding: 1.1rem 0.9rem;
        font-size: 0.95rem;
        font-weight: 500;
        position: relative;
        transition: var(--transition);
    }

    .navbar-custom .navbar-nav .nav-link::after {
        content: "";
        position: absolute;
        left: 0.9rem;
        right: 0.9rem;
        bottom: 0.65rem;
        height: 2px;
        background: var(--primary-light);
        transform: scaleX(0);
        transform-origin: left;
        transition: var(--transition);
        border-radius: 2px;
    }

    .navbar-custom .navbar-nav .nav-link:hover,
    .navbar-custom .navbar-nav .nav-link.active {
        color: var(--primary-light);
    }

    .navbar-custom .navbar-nav .nav-link:hover::after,
    .navbar-custom .navbar-nav .nav-link.active::after {
        transform: scaleX(1);
    }

    .nav-right {
        display: flex;
        align-items: center;
        gap: 1.2rem;
    }

    .nav-search {
        color: var(--text-body);
        font-size: 1.15rem;
        line-height: 1;
        transition: var(--transition);
    }

    .nav-search:hover {
        color: var(--accent);
    }

    .btn-primary-custom {
        display: inline-block;
        background: linear-gradient(135deg, #F59E0B, #F97316);
        color: #0F172A;
        font-weight: 600;
        border: none;
        padding: 10px 24px;
        border-radius: var(--radius-btn);
        font-size: 0.95rem;
        transition: var(--transition);
        box-shadow: 0 4px 16px rgba(245, 158, 11, 0.25);
        letter-spacing: 0.02em;
    }

    .btn-primary-custom:hover {
        color: #0F172A;
        filter: brightness(1.1);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(245, 158, 11, 0.35);
    }

    .btn-primary-custom:focus-visible {
        outline: 2px solid var(--primary-light);
        outline-offset: 3px;
    }

    .btn-ghost-custom {
        display: inline-block;
        background: transparent;
        color: var(--text-title);
        border: 1px solid rgba(255, 255, 255, 0.25);
        padding: 10px 26px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 0.95rem;
        transition: var(--transition);
    }

    .btn-ghost-custom:hover {
        border-color: var(--primary);
        color: var(--primary-light);
        transform: translateY(-2px);
    }

    .btn-ghost-custom:focus-visible {
        outline: 2px solid var(--primary-light);
        outline-offset: 3px;
    }

    .navbar-toggler {
        border: none;
        color: var(--text-title);
        font-size: 1.4rem;
        padding: 0.3rem 0.5rem;
    }

    .navbar-toggler:focus {
        box-shadow: none;
        outline: 2px solid rgba(20, 184, 166, 0.4);
        border-radius: 6px;
    }

    @media (max-width: 991.98px) {
        .navbar-custom {
            min-height: 56px;
        }

        .navbar-custom .navbar-nav .nav-link {
            padding: 0.8rem 0.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .navbar-custom .navbar-nav .nav-link::after {
            display: none;
        }

        .nav-right {
            padding: 0.8rem 0 0.5rem;
            gap: 1rem;
        }

        .navbar-collapse {
            background: rgba(15, 23, 42, 0.96);
            border-radius: 0 0 14px 14px;
            padding: 0.6rem 1rem 1rem;
            border: 1px solid rgba(20, 184, 166, 0.15);
            border-top: none;
        }
    }

    /* ===== Page Banner / Hero ===== */
    .page-banner {
        position: relative;
        padding: 72px 0 64px;
        background: linear-gradient(135deg, #0B1220 0%, #0F172A 55%, #12203A 100%);
        overflow: hidden;
        border-bottom: 1px solid rgba(20, 184, 166, 0.12);
    }

    .page-banner::before {
        content: "";
        position: absolute;
        width: 480px;
        height: 480px;
        left: -120px;
        top: 50%;
        transform: translateY(-50%);
        background: radial-gradient(circle, rgba(20, 184, 166, 0.15) 0%, transparent 70%);
        pointer-events: none;
    }

    .page-banner::after {
        content: "";
        position: absolute;
        width: 460px;
        height: 460px;
        right: -80px;
        top: -80px;
        background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 65%);
        pointer-events: none;
    }

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

    .page-banner h1 {
        color: var(--text-title);
        font-size: clamp(1.9rem, 4vw, 2.6rem);
        font-weight: 700;
        line-height: 1.25;
        margin-bottom: 0.6em;
        letter-spacing: 0.01em;
    }

    .page-banner h1 .highlight {
        color: var(--primary-light);
        position: relative;
    }

    .page-banner p.lead {
        color: var(--text-body);
        font-size: 1.05rem;
        max-width: 560px;
        line-height: 1.8;
        margin-bottom: 0.5rem;
    }

    .banner-visual {
        position: relative;
        text-align: right;
        z-index: 2;
        padding: 20px 10px;
    }

    .banner-visual img {
        border-radius: 16px;
        border: 1px solid var(--border);
        box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
        max-height: 260px;
        width: 100%;
        object-fit: cover;
        filter: saturate(1.05);
    }

    .banner-badge {
        position: absolute;
        bottom: 8px;
        left: 8px;
        background: rgba(15, 23, 42, 0.85);
        backdrop-filter: blur(8px);
        border: 1px solid rgba(20, 184, 166, 0.35);
        border-radius: 12px;
        padding: 10px 16px;
        display: flex;
        align-items: center;
        gap: 10px;
        box-shadow: var(--shadow-card);
    }

    .banner-badge .icon {
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 8px;
        background: rgba(20, 184, 166, 0.15);
        color: var(--primary-light);
        font-size: 1rem;
    }

    .banner-badge .num {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--text-title);
        line-height: 1.2;
    }

    .banner-badge .label {
        font-size: 0.78rem;
        color: var(--text-muted);
        line-height: 1.2;
    }

    /* ===== Main Two Column ===== */
    .content-section {
        padding: 80px 0 48px;
        background: var(--bg-body);
        position: relative;
    }

    .content-section::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(20, 184, 166, 0.3), transparent);
    }

    .main-article {
        padding-right: 20px;
    }

    .article-block {
        margin-bottom: 52px;
    }

    .article-block h2 {
        color: var(--text-title);
        font-size: 1.6rem;
        font-weight: 600;
        line-height: 1.3;
        margin-bottom: 1rem;
        padding-left: 14px;
        border-left: 3px solid var(--primary);
        border-radius: 2px;
    }

    .article-block h3 {
        color: var(--text-title);
        font-size: 1.2rem;
        font-weight: 600;
        margin-bottom: 0.75rem;
        margin-top: 1.5rem;
    }

    .article-block p {
        color: var(--text-body);
        margin-bottom: 1rem;
        line-height: 1.8;
        font-size: 0.97rem;
    }

    .article-block blockquote {
        border-left: 4px solid var(--primary);
        background: rgba(20, 184, 166, 0.06);
        padding: 14px 20px;
        border-radius: 0 10px 10px 0;
        margin: 1.2rem 0;
        color: var(--text-body);
    }

    .article-block blockquote p {
        margin-bottom: 0;
    }

    .article-figure {
        border-radius: var(--radius-card);
        overflow: hidden;
        border: 1px solid var(--border);
        margin: 1.2rem 0;
    }

    .article-figure img {
        width: 100%;
        height: auto;
        display: block;
        aspect-ratio: 16/7;
        object-fit: cover;
    }

    .article-figure figcaption {
        background: var(--bg-card);
        padding: 10px 16px;
        font-size: 0.82rem;
        color: var(--text-muted);
        border-top: 1px solid var(--border);
    }

    /* ===== Timelines / Events ===== */
    .event-list {
        margin-top: 1.2rem;
    }

    .event-item {
        display: flex;
        gap: 1.2rem;
        padding: 20px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        position: relative;
        transition: var(--transition);
        border-radius: 10px;
        padding-left: 14px;
        padding-right: 14px;
    }

    .event-item:hover {
        background: var(--bg-card);
        box-shadow: var(--shadow-card);
    }

    .event-date {
        flex-shrink: 0;
        width: 74px;
        text-align: center;
        background: rgba(20, 184, 166, 0.08);
        border: 1px solid rgba(20, 184, 166, 0.2);
        border-radius: 10px;
        padding: 10px 4px;
        align-self: flex-start;
    }

    .event-date .month {
        display: block;
        font-size: 0.75rem;
        color: var(--primary-light);
        text-transform: uppercase;
    }

    .event-date .day {
        display: block;
        font-size: 1.4rem;
        font-weight: 700;
        color: var(--text-title);
        line-height: 1.2;
    }

    .event-body h4 {
        color: var(--text-title);
        font-size: 1.05rem;
        font-weight: 600;
        margin-bottom: 0.35rem;
    }

    .event-body p {
        color: var(--text-body);
        font-size: 0.92rem;
        margin-bottom: 0;
        line-height: 1.65;
    }

    .event-tag {
        display: inline-block;
        background: rgba(20, 184, 166, 0.12);
        color: var(--primary-light);
        border-radius: 4px;
        padding: 2px 10px;
        font-size: 0.75rem;
        border: 1px solid rgba(20, 184, 166, 0.3);
        margin-right: 6px;
    }

    /* ===== Feature Cards (not 3-equal generic) ===== */
    .upgrade-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 1rem;
        margin: 1.2rem 0;
    }

    .upgrade-card {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 22px 22px;
        display: flex;
        gap: 16px;
        align-items: flex-start;
        transition: var(--transition);
    }

    .upgrade-card:hover {
        transform: translateY(-4px);
        border-color: rgba(20, 184, 166, 0.4);
        box-shadow: var(--shadow-hover);
        background: var(--bg-card-hover);
    }

    .upgrade-card .uc-icon {
        width: 44px;
        height: 44px;
        flex-shrink: 0;
        background: rgba(20, 184, 166, 0.12);
        color: var(--primary-light);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.1rem;
        border: 1px solid rgba(20, 184, 166, 0.2);
    }

    .upgrade-card h4 {
        color: var(--text-title);
        font-size: 1.02rem;
        font-weight: 600;
        margin-bottom: 0.3rem;
    }

    .upgrade-card p {
        font-size: 0.9rem;
        color: var(--text-body);
        margin-bottom: 0;
        line-height: 1.7;
    }

    /* ===== Metric Band ===== */
    .metric-band {
        background: linear-gradient(135deg, rgba(20, 184, 166, 0.08), rgba(20, 184, 166, 0.02));
        border: 1px solid rgba(20, 184, 166, 0.18);
        border-radius: var(--radius-card);
        padding: 28px 22px;
        margin: 1.5rem 0;
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        gap: 1rem;
        text-align: center;
    }

    .metric-band .metric {
        padding: 6px 8px;
    }

    .metric-band .metric .num {
        font-size: 1.7rem;
        font-weight: 700;
        color: var(--accent);
        line-height: 1.25;
    }

    .metric-band .metric .txt {
        font-size: 0.85rem;
        color: var(--text-muted);
    }

    /* ===== Sidebar ===== */
    .sidebar-widget {
        position: sticky;
        top: 90px;
        margin-bottom: 1.5rem;
    }

    .side-card {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 24px 22px;
        margin-bottom: 24px;
        transition: var(--transition);
    }

    .side-card:hover {
        border-color: rgba(20, 184, 166, 0.25);
    }

    .side-card h5 {
        color: var(--text-title);
        font-size: 1rem;
        font-weight: 600;
        margin-bottom: 1rem;
        padding-bottom: 0.75rem;
        border-bottom: 1px solid var(--border);
        position: relative;
    }

    .side-card h5::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: -1px;
        width: 42px;
        height: 2px;
        background: var(--primary);
        border-radius: 2px;
    }

    .side-links {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .side-links li {
        margin-bottom: 0.45rem;
    }

    .side-links li a {
        display: block;
        color: var(--text-body);
        font-size: 0.92rem;
        padding: 8px 12px;
        border-radius: 8px;
        transition: var(--transition);
        border-left: 2px solid transparent;
    }

    .side-links li a:hover {
        color: var(--primary-light);
        background: rgba(20, 184, 166, 0.06);
        border-left-color: var(--primary);
        padding-left: 18px;
    }

    .side-links li a i {
        color: var(--primary);
        font-size: 0.7rem;
        margin-right: 6px;
        transition: var(--transition);
    }

    .side-links li a:hover i {
        margin-right: 10px;
    }

    .side-tip {
        background: rgba(245, 158, 11, 0.06);
        border: 1px solid rgba(245, 158, 11, 0.25);
        border-radius: var(--radius-card);
        padding: 20px 20px;
        margin-top: 0;
        transition: var(--transition);
    }

    .side-tip h6 {
        color: var(--accent);
        font-size: 0.92rem;
        font-weight: 600;
        margin-bottom: 0.5rem;
    }

    .side-tip p {
        font-size: 0.85rem;
        color: var(--text-body);
        margin-bottom: 0.8rem;
        line-height: 1.6;
    }

    .side-tip a {
        font-size: 0.85rem;
        font-weight: 500;
    }

    /* ===== Newsletter / CTA Narrow Band ===== */
    .narrow-cta {
        padding: 0 0 80px;
        background: var(--bg-body);
    }

    .narrow-cta .cta-band {
        background: linear-gradient(120deg, rgba(20, 184, 166, 0.12), transparent 60%);
        border: 1px solid rgba(20, 184, 166, 0.25);
        border-radius: var(--radius-card);
        padding: 30px 32px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 2rem;
        flex-wrap: wrap;
    }

    .narrow-cta .cta-band h3 {
        color: var(--text-title);
        font-size: 1.25rem;
        font-weight: 600;
        margin-bottom: 0.2rem;
    }

    .narrow-cta .cta-band p {
        margin-bottom: 0;
        color: var(--text-body);
        font-size: 0.92rem;
    }

    .narrow-cta .cta-actions {
        display: flex;
        align-items: center;
        gap: 0.8rem;
        flex-wrap: wrap;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: #0A111E;
        border-top: 1px solid rgba(20, 184, 166, 0.16);
        padding: 60px 0 0;
    }

    .site-footer .container {
        max-width: 1200px;
    }

    .site-footer .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr 1fr;
        gap: 2.5rem;
        padding-bottom: 2rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .site-footer .logo-text {
        color: var(--text-title);
        font-size: 1.35rem;
        font-weight: 700;
        margin-bottom: 0.6rem;
    }

    .site-footer .logo-text span {
        color: var(--primary-light);
        font-weight: 400;
        font-size: 0.9rem;
        margin-left: 4px;
    }

    .site-footer .footer-brand p {
        color: var(--text-muted);
        font-size: 0.9rem;
        line-height: 1.6;
        max-width: 260px;
    }

    .site-footer h4 {
        color: var(--text-title);
        font-size: 0.95rem;
        font-weight: 600;
        margin-bottom: 1rem;
    }

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

    .site-footer ul li {
        margin-bottom: 0.55rem;
        font-size: 0.88rem;
        color: var(--text-muted);
    }

    .site-footer ul li a {
        color: var(--text-muted);
        font-size: 0.88rem;
        transition: var(--transition);
    }

    .site-footer ul li a:hover {
        color: var(--primary-light);
        padding-left: 4px;
    }

    .site-footer .footer-bottom {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 0.8rem;
        padding: 1.5rem 0;
        font-size: 0.8rem;
        color: var(--text-muted);
    }

    .site-footer .footer-bottom span {
        opacity: 0.85;
    }

    /* ===== Mobile Directory ===== */
    .mobile-dir {
        display: none;
        margin-bottom: 1.5rem;
    }

    .mobile-dir .dir-card {
        background: var(--bg-card);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 18px 18px;
    }

    .mobile-dir .dir-card h5 {
        color: var(--text-title);
        font-size: 0.95rem;
        font-weight: 600;
        margin-bottom: 0.8rem;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .mobile-dir .dir-card ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .mobile-dir .dir-card ul li {
        padding: 0.4rem 0;
    }

    .mobile-dir .dir-card ul li a {
        color: var(--text-body);
        font-size: 0.9rem;
    }

    .mobile-dir .dir-card ul li a:hover {
        color: var(--primary-light);
    }

    /* ===== Responsive ===== */
    @media (max-width: 991.98px) {
        .page-banner {
            padding: 52px 0 48px;
        }

        .page-banner h1 {
            font-size: 1.85rem;
        }

        .page-banner p.lead {
            font-size: 0.98rem;
        }

        .banner-visual {
            margin-top: 2rem;
            text-align: left;
        }

        .banner-visual img {
            max-height: 220px;
        }

        .content-section {
            padding: 56px 0 40px;
        }

        .main-article {
            padding-right: 0;
        }

        .sidebar-widget {
            position: static;
            margin-top: 0;
        }

        .desktop-dir {
            display: none !important;
        }

        .mobile-dir {
            display: block;
        }

        .metric-band {
            grid-template-columns: 1fr 1fr;
        }

        .site-footer .footer-grid {
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
    }

    @media (max-width: 767.98px) {
        .page-banner {
            padding: 40px 0 36px;
        }

        .page-banner h1 {
            font-size: 1.65rem;
        }

        .content-section {
            padding: 44px 0 32px;
        }

        .event-item {
            padding: 16px 8px;
        }

        .event-date {
            width: 62px;
        }

        .event-date .day {
            font-size: 1.15rem;
        }

        .upgrade-card {
            flex-direction: column;
            align-items: flex-start;
            gap: 10px;
        }

        .metric-band {
            grid-template-columns: 1fr;
        }

        .site-footer .footer-grid {
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        .site-footer {
            padding-top: 44px;
        }

        .narrow-cta .cta-band {
            padding: 24px 20px;
            flex-direction: column;
            align-items: flex-start;
        }

        .narrow-cta .cta-actions {
            width: 100%;
        }

        .footer-bottom {
            flex-direction: column;
            align-items: flex-start;
        }
    }

    @media (max-width: 575.98px) {
        .page-banner h1 {
            font-size: 1.5rem;
        }

        .page-banner p.lead {
            font-size: 0.92rem;
        }

        .banner-badge {
            position: relative;
            left: auto;
            bottom: auto;
            margin-top: 12px;
        }

        .article-block h2 {
            font-size: 1.3rem;
        }

        .event-item {
            flex-direction: row;
        }

        .event-date {
            width: 56px;
        }

        .event-date .day {
            font-size: 1rem;
        }
    }