/* roulang page: index */
:root {
        --color-primary: #161512;
        --color-primary-soft: #2A2822;
        --color-accent: #C9A86A;
        --color-accent-hover: #B8944E;
        --color-bg: #F7F4EE;
        --color-bg-soft: #F0ECE3;
        --color-surface: #FFFFFF;
        --color-border: #E5E0D6;
        --color-text-strong: #1A1A1A;
        --color-text: #3D3A35;
        --color-text-soft: #7A756C;
        --color-success: #3D5A3D;
        --radius-sm: 4px;
        --radius-md: 8px;
        --radius-lg: 12px;
        --shadow-sm: 0 2px 8px rgba(22,21,18,0.04);
        --shadow-md: 0 6px 18px rgba(22,21,18,0.07);
        --shadow-lg: 0 12px 32px rgba(22,21,18,0.10);
        --font-family: 'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
        --transition: 0.25s ease;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-family);
        font-size: 16px;
        line-height: 1.8;
        color: var(--color-text);
        background-color: var(--color-bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        overflow-x: hidden;
    }

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

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

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

    button, input, textarea, select {
        font-family: var(--font-family);
    }

    .container-custom {
        max-width: 1240px;
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
    }

    @media (max-width: 576px) {
        .container-custom {
            padding-left: 16px;
            padding-right: 16px;
        }
    }

    /* Bootstrap overrides */
    .navbar {
        padding: 0;
    }

    .btn {
        border-radius: var(--radius-sm);
        transition: all var(--transition);
        font-weight: 500;
    }

    .btn:focus {
        outline: none;
        box-shadow: 0 0 0 2px rgba(201,168,106,0.3);
    }

    .btn-primary {
        background-color: var(--color-accent);
        border-color: var(--color-accent);
        color: #1A1A1A;
        padding: 10px 22px;
        border-radius: var(--radius-sm);
        font-weight: 600;
    }

    .btn-primary:hover, .btn-primary:focus {
        background-color: var(--color-accent-hover);
        border-color: var(--color-accent-hover);
        color: #1A1A1A;
    }

    .btn-primary:active {
        background-color: var(--color-accent-hover) !important;
        border-color: var(--color-accent-hover) !important;
        transform: scale(0.97);
    }

    .btn-outline-dark {
        background: transparent;
        border: 1.5px solid var(--color-primary);
        color: var(--color-primary);
        padding: 10px 22px;
        border-radius: var(--radius-sm);
        font-weight: 600;
    }

    .btn-outline-dark:hover, .btn-outline-dark:focus {
        background: var(--color-primary);
        border-color: var(--color-primary);
        color: #fff;
    }

    .btn-outline-light-custom {
        background: transparent;
        border: 1.5px solid var(--color-accent);
        color: var(--color-accent);
        padding: 10px 22px;
        border-radius: var(--radius-sm);
        font-weight: 600;
    }

    .btn-outline-light-custom:hover {
        background: var(--color-accent);
        border-color: var(--color-accent);
        color: var(--color-primary);
    }

    /* Navbar */
    .site-navbar {
        background: var(--color-primary);
        min-height: 64px;
        box-shadow: 0 2px 12px rgba(0,0,0,0.25);
        position: sticky;
        top: 0;
        z-index: 1040;
    }

    .site-navbar .navbar-brand {
        font-weight: 800;
        font-size: 1.15rem;
        color: #EDE9E2;
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 8px 0;
        white-space: nowrap;
    }

    .site-navbar .navbar-brand .brand-badge {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--color-accent);
        color: var(--color-primary);
        border-radius: 50%;
        font-size: 0.8rem;
        font-weight: 800;
        flex-shrink: 0;
    }

    .site-navbar .navbar-brand:hover {
        color: var(--color-accent);
    }

    .site-navbar .navbar-toggler {
        border: 1px solid rgba(237,233,226,0.25);
        border-radius: var(--radius-sm);
        padding: 6px 10px;
        color: #EDE9E2;
    }

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

    .site-navbar .navbar-nav .nav-link {
        color: #EDE9E2;
        font-size: 0.9rem;
        font-weight: 500;
        padding: 20px 14px;
        position: relative;
        white-space: nowrap;
        transition: color var(--transition);
    }

    .site-navbar .navbar-nav .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background: var(--color-accent);
        transition: width var(--transition);
    }

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

    .site-navbar .navbar-nav .nav-link:hover,
    .site-navbar .navbar-nav .nav-link.active {
        color: var(--color-accent);
    }

    .site-navbar .dropdown-menu {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-lg);
        padding: 16px;
        min-width: 260px;
        margin-top: 4px;
    }

    .site-navbar .dropdown-menu .dropdown-section-title {
        font-size: 0.72rem;
        font-weight: 700;
        color: var(--color-text-soft);
        text-transform: uppercase;
        letter-spacing: 1px;
        margin-bottom: 8px;
        padding-bottom: 4px;
        border-bottom: 1px solid var(--color-border);
    }

    .site-navbar .dropdown-menu .dropdown-item {
        display: block;
        padding: 10px 12px;
        font-size: 0.85rem;
        color: var(--color-text-strong);
        border-radius: var(--radius-sm);
        transition: all var(--transition);
    }

    .site-navbar .dropdown-menu .dropdown-item:hover {
        background: #FAF7F0;
        color: var(--color-accent);
        padding-left: 16px;
    }

    .site-navbar .dropdown-toggle::after {
        display: none !important;
    }

    .site-navbar .dropdown-toggle .nav-arrow {
        font-size: 0.65rem;
        color: var(--color-accent);
        margin-left: 4px;
        transition: transform var(--transition);
    }

    .site-navbar .dropdown-toggle[aria-expanded="true"] .nav-arrow {
        transform: rotate(180deg);
    }

    @media (max-width: 991.98px) {
        .site-navbar .navbar-collapse {
            background: var(--color-primary);
            padding: 16px;
            border-top: 1px solid rgba(255,255,255,0.06);
            max-height: 80vh;
            overflow-y: auto;
        }
        .site-navbar .navbar-nav .nav-link {
            padding: 12px 8px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .site-navbar .navbar-nav .nav-link::after {
            display: none;
        }
        .site-navbar .dropdown-menu {
            background: rgba(255,255,255,0.04);
            border: none;
            box-shadow: none;
            padding: 8px 8px 8px 24px;
            min-width: auto;
            margin-top: 0;
        }
        .site-navbar .dropdown-menu .dropdown-section-title {
            color: var(--color-text-soft);
            border-bottom-color: rgba(255,255,255,0.08);
        }
        .site-navbar .dropdown-menu .dropdown-item {
            color: #C9C5BC;
        }
        .site-navbar .dropdown-menu .dropdown-item:hover {
            background: rgba(255,255,255,0.06);
            color: var(--color-accent);
        }
    }

    /* Hero */
    .hero-section {
        background: var(--color-bg);
        padding: 80px 0 64px;
        position: relative;
        overflow: hidden;
    }

    .hero-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('/assets/images/7364ec96e5945898.webp') center/cover no-repeat;
        opacity: 0.08;
        pointer-events: none;
    }

    .hero-section .container-custom {
        position: relative;
        z-index: 1;
    }

    .hero-main-title {
        font-size: 46px;
        font-weight: 800;
        line-height: 1.25;
        color: var(--color-text-strong);
        margin-bottom: 16px;
        letter-spacing: -0.5px;
    }

    .hero-main-title .accent-line {
        display: inline-block;
        width: 48px;
        height: 3px;
        background: var(--color-accent);
        margin-bottom: 12px;
        border-radius: 2px;
    }

    .hero-subtitle {
        font-size: 18px;
        font-weight: 400;
        color: var(--color-text-soft);
        line-height: 1.85;
        max-width: 560px;
        margin-bottom: 28px;
    }

    .hero-buttons {
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
        margin-bottom: 28px;
    }

    .hero-progress-ring {
        display: flex;
        align-items: center;
        gap: 16px;
        margin-top: 8px;
    }

    .progress-ring-wrapper {
        position: relative;
        width: 100px;
        height: 100px;
        flex-shrink: 0;
    }

    .progress-ring-wrapper svg {
        transform: rotate(-90deg);
    }

    .progress-ring-bg {
        fill: none;
        stroke: var(--color-border);
        stroke-width: 8;
    }

    .progress-ring-fg {
        fill: none;
        stroke: var(--color-accent);
        stroke-width: 8;
        stroke-linecap: round;
        stroke-dasharray: 220 314;
        stroke-dashoffset: 0;
        animation: ring-fill 1.2s ease-out forwards;
    }

    @keyframes ring-fill {
        from { stroke-dasharray: 0 314; }
        to { stroke-dasharray: 220 314; }
    }

    .progress-ring-text {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        text-align: center;
    }

    .progress-ring-text .ring-number {
        font-size: 1.3rem;
        font-weight: 800;
        color: var(--color-primary);
        line-height: 1.2;
    }

    .progress-ring-text .ring-label {
        font-size: 0.68rem;
        color: var(--color-text-soft);
        font-weight: 500;
    }

    .hero-progress-info {
        display: flex;
        flex-direction: column;
        gap: 4px;
    }

    .hero-progress-info .progress-title {
        font-size: 0.9rem;
        font-weight: 700;
        color: var(--color-text-strong);
    }

    .hero-progress-info .progress-desc {
        font-size: 0.8rem;
        color: var(--color-text-soft);
    }

    .hero-tier-preview {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-md);
        padding: 24px;
        position: relative;
    }

    .hero-tier-preview .tier-label {
        font-size: 0.7rem;
        font-weight: 700;
        letter-spacing: 1px;
        text-transform: uppercase;
        color: var(--color-accent);
        margin-bottom: 12px;
    }

    .tier-preview-list {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .tier-preview-item {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 10px 14px;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-sm);
        transition: all var(--transition);
        cursor: default;
    }

    .tier-preview-item:hover {
        border-color: var(--color-accent);
        box-shadow: var(--shadow-sm);
    }

    .tier-preview-item .tier-name {
        font-weight: 700;
        font-size: 0.85rem;
        color: var(--color-text-strong);
    }

    .tier-preview-item .tier-price {
        font-size: 0.82rem;
        color: var(--color-accent);
        font-weight: 600;
    }

    @media (max-width: 991.98px) {
        .hero-section {
            padding: 48px 0;
        }
        .hero-main-title {
            font-size: 32px;
        }
        .hero-subtitle {
            font-size: 16px;
        }
        .hero-tier-preview {
            margin-top: 32px;
        }
    }

    @media (max-width: 576px) {
        .hero-main-title {
            font-size: 28px;
        }
        .hero-progress-ring {
            flex-direction: column;
            align-items: flex-start;
        }
        .hero-buttons {
            flex-direction: column;
            width: 100%;
        }
        .hero-buttons .btn {
            width: 100%;
        }
    }

    /* Sections */
    .section-block {
        padding: 88px 0;
    }

    .section-block.bg-soft {
        background: var(--color-bg-soft);
    }

    .section-block.bg-dark {
        background: var(--color-primary);
        color: #EDE9E2;
    }

    .section-block.bg-dark .section-title {
        color: #EDE9E2;
    }

    .section-block.bg-dark .section-desc {
        color: #C9C5BC;
    }

    .section-title {
        font-size: 32px;
        font-weight: 800;
        color: var(--color-text-strong);
        margin-bottom: 8px;
        line-height: 1.35;
    }

    .section-title .title-accent {
        display: inline-block;
        width: 36px;
        height: 3px;
        background: var(--color-accent);
        margin-bottom: 10px;
        border-radius: 2px;
    }

    .section-desc {
        font-size: 15px;
        color: var(--color-text-soft);
        max-width: 640px;
        line-height: 1.85;
    }

    @media (max-width: 768px) {
        .section-block {
            padding: 48px 0;
        }
        .section-title {
            font-size: 24px;
        }
        .section-desc {
            font-size: 14px;
        }
    }

    /* Cards */
    .site-card {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        padding: 20px;
        transition: all var(--transition);
        height: 100%;
    }

    .site-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-md);
        border-color: #D8D2C8;
    }

    .card-badge-num {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--color-primary);
        color: var(--color-accent);
        font-weight: 700;
        font-size: 0.8rem;
        border-radius: 50%;
        margin-bottom: 12px;
        transition: all var(--transition);
    }

    .site-card:hover .card-badge-num {
        box-shadow: 0 0 12px rgba(201,168,106,0.45);
    }

    .status-badge {
        display: inline-block;
        background: var(--color-accent);
        color: var(--color-primary);
        font-size: 0.7rem;
        font-weight: 700;
        padding: 3px 10px;
        border-radius: 20px;
        letter-spacing: 0.5px;
        transition: transform var(--transition);
    }

    .site-card:hover .status-badge {
        transform: scale(1.06);
    }

    .card-title-sm {
        font-size: 1.05rem;
        font-weight: 700;
        color: var(--color-text-strong);
        margin-bottom: 6px;
    }

    .card-text-sm {
        font-size: 0.87rem;
        color: var(--color-text-soft);
        line-height: 1.7;
        margin-bottom: 0;
    }

    /* Timeline */
    .timeline-flow {
        display: flex;
        gap: 24px;
        flex-wrap: wrap;
        position: relative;
    }

    .timeline-flow::before {
        content: '';
        position: absolute;
        top: 22px;
        left: 18px;
        right: 18px;
        height: 2px;
        background: var(--color-border);
        z-index: 0;
    }

    .timeline-step {
        flex: 1;
        min-width: 160px;
        text-align: center;
        position: relative;
        z-index: 1;
    }

    .timeline-node {
        width: 44px;
        height: 44px;
        background: var(--color-surface);
        border: 2px solid var(--color-border);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 800;
        font-size: 0.85rem;
        color: var(--color-primary);
        margin: 0 auto 12px;
        transition: all var(--transition);
    }

    .timeline-step:hover .timeline-node {
        background: var(--color-accent);
        border-color: var(--color-accent);
        color: var(--color-primary);
        box-shadow: 0 0 16px rgba(201,168,106,0.4);
    }

    .timeline-title {
        font-size: 0.95rem;
        font-weight: 700;
        color: var(--color-text-strong);
        margin-bottom: 4px;
    }

    .timeline-desc {
        font-size: 0.8rem;
        color: var(--color-text-soft);
        line-height: 1.6;
    }

    @media (max-width: 768px) {
        .timeline-flow {
            flex-direction: column;
            gap: 18px;
        }
        .timeline-flow::before {
            display: none;
        }
        .timeline-step {
            text-align: left;
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }
        .timeline-node {
            margin: 0;
            flex-shrink: 0;
        }
    }

    /* Stats */
    .stats-row {
        display: flex;
        gap: 20px;
        flex-wrap: wrap;
    }

    .stat-block {
        flex: 1;
        min-width: 160px;
        padding: 16px 0;
        border-top: 2px solid var(--color-accent);
    }

    .stat-number {
        font-size: 44px;
        font-weight: 800;
        color: var(--color-text-strong);
        line-height: 1.2;
    }

    .stat-label {
        font-size: 0.8rem;
        color: var(--color-text-soft);
        font-weight: 500;
        letter-spacing: 0.5px;
    }

    @media (max-width: 768px) {
        .stats-row {
            gap: 12px;
        }
        .stat-block {
            min-width: calc(50% - 12px);
        }
        .stat-number {
            font-size: 32px;
        }
    }

    /* Testimonial */
    .testimonial-card {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-left: 3px solid var(--color-accent);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        padding: 20px;
        transition: all var(--transition);
        height: 100%;
    }

    .testimonial-card:hover {
        border-left-width: 6px;
        box-shadow: var(--shadow-md);
    }

    .testimonial-text {
        font-size: 0.9rem;
        color: var(--color-text);
        line-height: 1.8;
        margin-bottom: 12px;
    }

    .testimonial-rating {
        color: var(--color-accent);
        font-size: 0.8rem;
        letter-spacing: 2px;
        margin-bottom: 6px;
    }

    .testimonial-author {
        font-size: 0.82rem;
        color: var(--color-text-soft);
        font-weight: 600;
    }

    /* Progress bars */
    .quality-bar {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 14px;
    }

    .quality-bar .bar-label {
        font-size: 0.85rem;
        font-weight: 600;
        color: var(--color-text-strong);
        min-width: 100px;
    }

    .quality-bar .bar-track {
        flex: 1;
        height: 6px;
        background: var(--color-border);
        border-radius: 3px;
        overflow: hidden;
        position: relative;
    }

    .quality-bar .bar-fill {
        height: 100%;
        background: var(--color-accent);
        border-radius: 3px;
        position: relative;
        transition: width 0.8s ease;
    }

    .quality-bar .bar-fill::after {
        content: '';
        position: absolute;
        right: -3px;
        top: -2px;
        width: 10px;
        height: 10px;
        background: var(--color-accent);
        border-radius: 50%;
    }

    .quality-bar .bar-percent {
        font-size: 0.8rem;
        font-weight: 700;
        color: var(--color-accent);
        min-width: 40px;
        text-align: right;
    }

    @media (max-width: 576px) {
        .quality-bar {
            flex-wrap: wrap;
        }
        .quality-bar .bar-label {
            min-width: 80px;
        }
    }

    /* CTA section */
    .cta-section {
        background: var(--color-primary);
        padding: 72px 0;
        position: relative;
        overflow: hidden;
    }

    .cta-section::after {
        content: '';
        position: absolute;
        top: -50%;
        right: -20%;
        width: 500px;
        height: 500px;
        background: radial-gradient(circle, rgba(201,168,106,0.12), transparent 70%);
        pointer-events: none;
    }

    .cta-section .container-custom {
        position: relative;
        z-index: 1;
    }

    .cta-title {
        font-size: 32px;
        font-weight: 800;
        color: #EDE9E2;
        margin-bottom: 12px;
    }

    .cta-desc {
        font-size: 15px;
        color: #C9C5BC;
        max-width: 500px;
        line-height: 1.85;
    }

    .cta-form {
        display: flex;
        gap: 10px;
        max-width: 480px;
        margin-top: 20px;
    }

    .cta-form .form-control {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-sm);
        padding: 10px 14px;
        font-size: 0.9rem;
        color: var(--color-text-strong);
    }

    .cta-form .form-control:focus {
        border-color: var(--color-accent);
        box-shadow: 0 0 0 2px rgba(201,168,106,0.25);
        outline: none;
    }

    @media (max-width: 576px) {
        .cta-section {
            padding: 48px 0;
        }
        .cta-title {
            font-size: 24px;
        }
        .cta-form {
            flex-direction: column;
        }
    }

    /* CMS list card */
    .cms-list-item {
        display: flex;
        gap: 14px;
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        padding: 16px;
        box-shadow: var(--shadow-sm);
        transition: all var(--transition);
        margin-bottom: 12px;
        position: relative;
    }

    .cms-list-item::before {
        content: '';
        position: absolute;
        left: 0;
        top: 12px;
        bottom: 12px;
        width: 3px;
        background: transparent;
        border-radius: 2px;
        transition: background var(--transition);
    }

    .cms-list-item:hover {
        transform: translateX(2px);
        box-shadow: var(--shadow-md);
    }

    .cms-list-item:hover::before {
        background: var(--color-accent);
    }

    .cms-list-thumb {
        width: 80px;
        height: 80px;
        flex-shrink: 0;
        border-radius: var(--radius-sm);
        overflow: hidden;
        background: var(--color-bg-soft);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.65rem;
        color: var(--color-text-soft);
    }

    .cms-list-thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .cms-list-content {
        flex: 1;
        min-width: 0;
    }

    .cms-list-title {
        font-size: 0.95rem;
        font-weight: 700;
        color: var(--color-text-strong);
        margin-bottom: 4px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .cms-list-title a {
        color: inherit;
    }

    .cms-list-title a:hover {
        color: var(--color-accent);
    }

    .cms-list-summary {
        font-size: 0.8rem;
        color: var(--color-text-soft);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        line-height: 1.6;
        margin-bottom: 6px;
    }

    .cms-list-meta {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 0.75rem;
        color: var(--color-text-soft);
    }

    .cms-list-meta .tag-pill {
        display: inline-block;
        border: 1px solid var(--color-accent);
        color: var(--color-accent);
        font-size: 0.7rem;
        font-weight: 600;
        padding: 1px 8px;
        border-radius: 20px;
    }

    .cms-list-meta .read-more {
        color: var(--color-accent);
        font-weight: 600;
        margin-left: auto;
    }

    .cms-list-meta .read-more:hover {
        color: var(--color-accent-hover);
    }

    @media (max-width: 576px) {
        .cms-list-thumb {
            width: 60px;
            height: 60px;
        }
        .cms-list-summary {
            -webkit-line-clamp: 1;
        }
        .cms-list-meta {
            flex-wrap: wrap;
        }
    }

    /* FAQ */
    .accordion-custom .accordion-item {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        margin-bottom: 10px;
        overflow: hidden;
        transition: all var(--transition);
    }

    .accordion-custom .accordion-item:hover {
        background: #FAF7F0;
        border-left: 3px solid var(--color-accent);
    }

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

    .accordion-custom .accordion-button {
        background: transparent;
        border: none;
        padding: 16px 18px;
        font-size: 0.95rem;
        font-weight: 700;
        color: var(--color-text-strong);
        box-shadow: none;
        transition: all var(--transition);
    }

    .accordion-custom .accordion-button:not(.collapsed) {
        background: transparent;
        color: var(--color-text-strong);
        border-left: 3px solid var(--color-accent);
    }

    .accordion-custom .accordion-button:focus {
        box-shadow: none;
        border-color: var(--color-accent);
    }

    .accordion-custom .accordion-button::after {
        color: var(--color-accent);
        font-size: 0.8rem;
    }

    .accordion-custom .accordion-body {
        padding: 0 18px 16px;
        font-size: 0.87rem;
        color: var(--color-text);
        line-height: 1.85;
    }

    /* Footer */
    .site-footer {
        background: var(--color-primary);
        padding: 48px 0 24px;
        color: #C9C5BC;
    }

    .site-footer .footer-brand {
        font-weight: 800;
        font-size: 1.1rem;
        color: #EDE9E2;
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 12px;
    }

    .site-footer .footer-brand .brand-badge {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--color-accent);
        color: var(--color-primary);
        border-radius: 50%;
        font-size: 0.8rem;
        font-weight: 800;
    }

    .site-footer .footer-desc {
        font-size: 0.82rem;
        color: #9A958C;
        line-height: 1.8;
        max-width: 260px;
    }

    .site-footer .footer-heading {
        font-size: 0.8rem;
        font-weight: 700;
        color: #EDE9E2;
        letter-spacing: 1px;
        text-transform: uppercase;
        margin-bottom: 14px;
    }

    .site-footer .footer-link {
        display: block;
        font-size: 0.82rem;
        color: #C9C5BC;
        margin-bottom: 8px;
        transition: color var(--transition);
    }

    .site-footer .footer-link:hover {
        color: var(--color-accent);
    }

    .site-footer .footer-divider {
        border-top: 1px solid rgba(255,255,255,0.08);
        margin: 28px 0 16px;
    }

    .site-footer .footer-copyright {
        font-size: 0.72rem;
        color: #7A756C;
    }

    @media (max-width: 768px) {
        .site-footer {
            padding: 32px 0 20px;
        }
    }

    /* Utility */
    .text-accent {
        color: var(--color-accent);
    }

    .bg-dark-custom {
        background: var(--color-primary);
    }

    .bg-dark-soft-custom {
        background: var(--color-primary-soft);
    }

    .gap-20 {
        gap: 20px;
    }

    .mb-32 {
        margin-bottom: 32px;
    }

    .mt-32 {
        margin-top: 32px;
    }

    .section-divider {
        height: 1px;
        background: var(--color-border);
        margin: 0;
    }

    .hero-animate-left {
        animation: fadeUp 0.5s ease forwards;
        opacity: 0;
        transform: translateY(24px);
    }

    .hero-animate-right {
        animation: fadeUp 0.5s ease 0.15s forwards;
        opacity: 0;
        transform: translateY(24px);
    }

    @keyframes fadeUp {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

/* roulang page: category1 */
:root {
        --color-primary: #161512;
        --color-primary-soft: #2A2822;
        --color-accent: #C9A86A;
        --color-accent-hover: #B8944E;
        --color-bg: #F7F4EE;
        --color-bg-soft: #F0ECE3;
        --color-surface: #FFFFFF;
        --color-border: #E5E0D6;
        --color-text-strong: #1A1A1A;
        --color-text: #3D3A35;
        --color-text-soft: #7A756C;
        --color-success: #3D5A3D;
        --radius-sm: 4px;
        --radius-md: 8px;
        --radius-lg: 12px;
        --shadow-sm: 0 2px 8px rgba(22,21,18,0.04);
        --shadow-md: 0 6px 18px rgba(22,21,18,0.07);
        --shadow-lg: 0 12px 32px rgba(22,21,18,0.10);
        --font-family: 'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
        --transition: 0.25s ease;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-family);
        font-size: 16px;
        line-height: 1.8;
        color: var(--color-text);
        background-color: var(--color-bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        overflow-x: hidden;
    }
    a {
        color: inherit;
        text-decoration: none;
        transition: color var(--transition);
    }
    a:hover {
        color: var(--color-accent);
    }
    img {
        max-width: 100%;
        height: auto;
        border-radius: var(--radius-sm);
    }
    button, input, textarea, select {
        font-family: var(--font-family);
    }
    .container-custom {
        max-width: 1240px;
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
    }
    @media (max-width: 575px) {
        .container-custom {
            padding-left: 16px;
            padding-right: 16px;
        }
    }
    /* Bootstrap overrides */
    .navbar {
        padding: 0;
    }
    .btn {
        border-radius: var(--radius-sm);
        transition: all var(--transition);
        font-weight: 500;
    }
    .btn:focus {
        outline: none;
        box-shadow: 0 0 0 2px rgba(201,168,106,0.3);
    }
    .btn-primary {
        background-color: var(--color-accent);
        border-color: var(--color-accent);
        color: #1A1A1A;
        padding: 10px 22px;
        border-radius: var(--radius-sm);
        font-weight: 600;
    }
    .btn-primary:hover, .btn-primary:focus {
        background-color: var(--color-accent-hover);
        border-color: var(--color-accent-hover);
        color: #1A1A1A;
    }
    .btn-primary:active {
        background-color: var(--color-accent-hover) !important;
        border-color: var(--color-accent-hover) !important;
        transform: scale(0.97);
    }
    .btn-outline-dark {
        background: transparent;
        border: 1.5px solid var(--color-primary);
        color: var(--color-primary);
        padding: 10px 22px;
        border-radius: var(--radius-sm);
        font-weight: 600;
    }
    .btn-outline-dark:hover, .btn-outline-dark:focus {
        background: var(--color-primary);
        border-color: var(--color-primary);
        color: #fff;
    }
    .btn-outline-light-custom {
        background: transparent;
        border: 1.5px solid var(--color-accent);
        color: var(--color-accent);
        padding: 10px 22px;
        border-radius: var(--radius-sm);
        font-weight: 600;
    }
    .btn-outline-light-custom:hover {
        background: var(--color-accent);
        border-color: var(--color-accent);
        color: var(--color-primary);
    }
    /* Navbar */
    .site-navbar {
        background: var(--color-primary);
        min-height: 64px;
        box-shadow: 0 2px 12px rgba(0,0,0,0.25);
        position: sticky;
        top: 0;
        z-index: 1040;
    }
    .site-navbar .navbar-brand {
        font-weight: 800;
        font-size: 1.05rem;
        color: #EDE9E2;
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 8px 0;
        white-space: nowrap;
    }
    .site-navbar .navbar-brand .brand-badge {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--color-accent);
        color: var(--color-primary);
        border-radius: 50%;
        font-size: 0.8rem;
        font-weight: 800;
        flex-shrink: 0;
    }
    .site-navbar .navbar-brand:hover {
        color: var(--color-accent);
    }
    .site-navbar .navbar-toggler {
        border: 1px solid rgba(237,233,226,0.25);
        border-radius: var(--radius-sm);
        padding: 6px 10px;
        color: #EDE9E2;
    }
    .site-navbar .navbar-toggler:focus {
        box-shadow: none;
        border-color: var(--color-accent);
    }
    .site-navbar .navbar-nav .nav-link {
        color: #EDE9E2;
        font-size: 0.88rem;
        font-weight: 500;
        padding: 20px 14px;
        position: relative;
        white-space: nowrap;
        transition: color var(--transition);
    }
    .site-navbar .navbar-nav .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background: var(--color-accent);
        transition: width var(--transition);
    }
    .site-navbar .navbar-nav .nav-link:hover::after,
    .site-navbar .navbar-nav .nav-link.active::after {
        width: 100%;
    }
    .site-navbar .navbar-nav .nav-link:hover,
    .site-navbar .navbar-nav .nav-link.active {
        color: var(--color-accent);
    }
    .site-navbar .dropdown-menu {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-lg);
        padding: 16px;
        min-width: 260px;
        margin-top: 4px;
    }
    .site-navbar .dropdown-menu .dropdown-section-title {
        font-size: 0.72rem;
        font-weight: 700;
        color: var(--color-text-soft);
        text-transform: uppercase;
        letter-spacing: 1px;
        margin-bottom: 8px;
        padding-bottom: 4px;
        border-bottom: 1px solid var(--color-border);
    }
    .site-navbar .dropdown-menu .dropdown-item {
        display: block;
        padding: 10px 12px;
        font-size: 0.85rem;
        color: var(--color-text-strong);
        border-radius: var(--radius-sm);
        transition: all var(--transition);
    }
    .site-navbar .dropdown-menu .dropdown-item:hover {
        background: #FAF7F0;
        color: var(--color-accent-hover);
        padding-left: 16px;
    }
    .site-navbar .nav-arrow {
        font-size: 0.6rem;
        margin-left: 4px;
        color: var(--color-accent);
    }
    @media (max-width: 991px) {
        .site-navbar .navbar-collapse {
            background: var(--color-primary);
            padding: 16px 12px;
            border-top: 1px solid rgba(255,255,255,0.08);
            max-height: 80vh;
            overflow-y: auto;
        }
        .site-navbar .navbar-nav .nav-link {
            padding: 12px 8px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .site-navbar .navbar-nav .nav-link::after {
            display: none;
        }
        .site-navbar .dropdown-menu {
            background: var(--color-primary-soft);
            border: 1px solid rgba(255,255,255,0.08);
            box-shadow: none;
            padding: 10px 0;
            margin-left: 16px;
        }
        .site-navbar .dropdown-menu .dropdown-item {
            color: #EDE9E2;
            padding: 10px 16px;
        }
        .site-navbar .dropdown-menu .dropdown-item:hover {
            background: rgba(201,168,106,0.1);
            color: var(--color-accent);
            padding-left: 20px;
        }
        .site-navbar .dropdown-menu .dropdown-section-title {
            color: rgba(237,233,226,0.5);
            border-bottom-color: rgba(255,255,255,0.08);
        }
    }
    /* Page sections */
    .section-category {
        padding: 72px 0;
    }
    .section-category-alt {
        padding: 72px 0;
        background: var(--color-bg-soft);
    }
    .section-category-dark {
        padding: 72px 0;
        background: var(--color-primary);
        color: #EDE9E2;
    }
    @media (max-width: 767px) {
        .section-category, .section-category-alt, .section-category-dark {
            padding: 48px 0;
        }
    }
    .section-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 0.75rem;
        font-weight: 700;
        letter-spacing: 2px;
        color: var(--color-accent);
        text-transform: uppercase;
        margin-bottom: 12px;
    }
    .section-eyebrow::before {
        content: '';
        width: 24px;
        height: 2px;
        background: var(--color-accent);
        display: inline-block;
    }
    .section-title {
        font-size: 1.9rem;
        font-weight: 800;
        color: var(--color-text-strong);
        line-height: 1.35;
        margin-bottom: 12px;
        letter-spacing: -0.01em;
    }
    .section-title.text-light-title {
        color: #EDE9E2;
    }
    .section-sub {
        font-size: 0.95rem;
        color: var(--color-text-soft);
        max-width: 720px;
        line-height: 1.75;
    }
    /* Breadcrumb */
    .breadcrumb-custom {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.82rem;
        color: var(--color-text-soft);
        margin-bottom: 20px;
        flex-wrap: wrap;
    }
    .breadcrumb-custom a {
        color: var(--color-text-soft);
        transition: color var(--transition);
    }
    .breadcrumb-custom a:hover {
        color: var(--color-accent);
    }
    .breadcrumb-custom .sep {
        color: var(--color-accent);
        font-size: 0.7rem;
    }
    .breadcrumb-custom .current {
        color: var(--color-accent);
        font-weight: 600;
    }
    /* Category hero */
    .category-hero {
        background: linear-gradient(135deg, var(--color-bg-soft) 0%, #FAF7F0 60%, var(--color-bg) 100%);
        padding: 56px 0 40px;
        border-bottom: 1px solid var(--color-border);
    }
    .category-hero h1 {
        font-size: 2.1rem;
        font-weight: 800;
        color: var(--color-text-strong);
        line-height: 1.35;
        margin-bottom: 14px;
        letter-spacing: -0.01em;
    }
    .category-hero .hero-desc {
        font-size: 0.95rem;
        color: var(--color-text-soft);
        max-width: 760px;
        line-height: 1.75;
    }
    @media (max-width: 767px) {
        .category-hero {
            padding: 36px 0 28px;
        }
        .category-hero h1 {
            font-size: 1.5rem;
        }
    }
    /* Index strip */
    .index-strip {
        background: var(--color-primary);
        padding: 12px 0;
        overflow-x: auto;
        white-space: nowrap;
        scrollbar-width: thin;
        scrollbar-color: var(--color-accent) transparent;
    }
    .index-strip::-webkit-scrollbar {
        height: 4px;
    }
    .index-strip::-webkit-scrollbar-track {
        background: transparent;
    }
    .index-strip::-webkit-scrollbar-thumb {
        background: var(--color-accent);
        border-radius: 4px;
    }
    .index-strip a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        margin-right: 8px;
        background: var(--color-primary-soft);
        color: var(--color-accent);
        font-size: 0.85rem;
        font-weight: 700;
        border-radius: var(--radius-sm);
        transition: all var(--transition);
        flex-shrink: 0;
    }
    .index-strip a:hover {
        background: var(--color-accent);
        color: var(--color-primary);
        transform: translateY(-2px);
    }
    /* Filter pills */
    .filter-pills {
        display: flex;
        gap: 10px;
        flex-wrap: wrap;
        align-items: center;
    }
    .filter-pills .pill {
        padding: 8px 20px;
        border-radius: 50px;
        font-size: 0.82rem;
        font-weight: 600;
        letter-spacing: 0.3px;
        cursor: default;
        transition: all var(--transition);
        white-space: nowrap;
    }
    .filter-pills .pill.active-pill {
        background: var(--color-primary);
        color: var(--color-accent);
        border: 1px solid var(--color-primary);
    }
    .filter-pills .pill:not(.active-pill) {
        background: transparent;
        color: var(--color-text-soft);
        border: 1px solid var(--color-border);
    }
    .filter-pills .pill:not(.active-pill):hover {
        border-color: var(--color-accent);
        color: var(--color-accent);
    }
    /* List cards */
    .list-card {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        overflow: hidden;
        transition: all var(--transition);
        height: 100%;
        display: flex;
        flex-direction: column;
        position: relative;
    }
    .list-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-md);
        border-color: #D5CBB8;
    }
    .list-card .card-cover {
        position: relative;
        aspect-ratio: 16/10;
        overflow: hidden;
        background: var(--color-bg-soft);
    }
    .list-card .card-cover img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        border-radius: 0;
        transition: transform 0.4s ease;
    }
    .list-card:hover .card-cover img {
        transform: scale(1.04);
    }
    .list-card .card-body {
        padding: 18px;
        display: flex;
        flex-direction: column;
        flex: 1;
    }
    .list-card .card-tag {
        font-size: 0.7rem;
        font-weight: 700;
        color: var(--color-accent);
        letter-spacing: 0.5px;
        margin-bottom: 6px;
        display: inline-block;
        align-self: flex-start;
        padding: 4px 10px;
        border-radius: 50px;
        border: 1px solid rgba(201,168,106,0.4);
        background: rgba(201,168,106,0.08);
    }
    .list-card .card-title {
        font-size: 1rem;
        font-weight: 700;
        color: var(--color-text-strong);
        line-height: 1.5;
        margin-bottom: 8px;
    }
    .list-card .card-summary {
        font-size: 0.82rem;
        color: var(--color-text-soft);
        line-height: 1.7;
        flex: 1;
        margin-bottom: 12px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .list-card .card-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 0.75rem;
        color: var(--color-text-soft);
        padding-top: 10px;
        border-top: 1px solid var(--color-border);
    }
    .list-card .card-link {
        font-size: 0.8rem;
        font-weight: 600;
        color: var(--color-accent);
        transition: all var(--transition);
        display: inline-flex;
        align-items: center;
        gap: 4px;
    }
    .list-card .card-link:hover {
        color: var(--color-accent-hover);
        gap: 8px;
    }
    /* Quality standard cards */
    .standard-card {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        padding: 24px 20px;
        height: 100%;
        transition: all var(--transition);
        position: relative;
        overflow: hidden;
    }
    .standard-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 4px;
        height: 100%;
        background: var(--color-accent);
        opacity: 0;
        transition: opacity var(--transition);
    }
    .standard-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-md);
    }
    .standard-card:hover::before {
        opacity: 1;
    }
    .standard-card .standard-index {
        font-size: 0.7rem;
        font-weight: 800;
        color: var(--color-accent);
        letter-spacing: 1px;
        margin-bottom: 8px;
    }
    .standard-card .standard-title {
        font-size: 0.95rem;
        font-weight: 700;
        color: var(--color-text-strong);
        margin-bottom: 8px;
    }
    .standard-card .standard-desc {
        font-size: 0.82rem;
        color: var(--color-text-soft);
        line-height: 1.7;
    }
    /* Stats cards */
    .stat-block {
        text-align: center;
        padding: 20px 12px;
        border-radius: var(--radius-md);
        background: var(--color-primary-soft);
        height: 100%;
        transition: all var(--transition);
    }
    .stat-block:hover {
        background: #35322A;
        transform: translateY(-4px);
        box-shadow: var(--shadow-md);
    }
    .stat-block .stat-number {
        font-size: 2.2rem;
        font-weight: 800;
        color: var(--color-accent);
        line-height: 1.2;
        margin-bottom: 6px;
        letter-spacing: -0.02em;
    }
    .stat-block .stat-label {
        font-size: 0.78rem;
        color: #C9C5BC;
        letter-spacing: 0.5px;
        padding-top: 8px;
        border-top: 1px solid rgba(201,168,106,0.25);
        display: inline-block;
    }
    /* FAQ */
    .faq-item {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        margin-bottom: 12px;
        overflow: hidden;
        transition: all var(--transition);
    }
    .faq-item:hover {
        border-color: #D5CBB8;
        box-shadow: var(--shadow-md);
    }
    .faq-item .accordion-button {
        background: var(--color-surface);
        color: var(--color-text-strong);
        font-weight: 600;
        font-size: 0.9rem;
        padding: 16px 20px;
        border: none;
        box-shadow: none;
        transition: all var(--transition);
    }
    .faq-item .accordion-button:not(.collapsed) {
        background: #FAF7F0;
        color: var(--color-accent-hover);
        border-left: 4px solid var(--color-accent);
    }
    .faq-item .accordion-button:focus {
        box-shadow: 0 0 0 2px rgba(201,168,106,0.25);
        border-color: var(--color-accent);
    }
    .faq-item .accordion-button::after {
        filter: invert(60%) sepia(30%) saturate(400%) hue-rotate(5deg);
    }
    .faq-item .accordion-body {
        font-size: 0.86rem;
        color: var(--color-text);
        line-height: 1.8;
        padding: 16px 20px 20px;
        background: #FEFCF8;
        border-top: 1px solid var(--color-border);
    }
    /* CTA bar */
    .cta-bar {
        background: var(--color-primary);
        padding: 32px 24px;
        border-radius: var(--radius-lg);
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        flex-wrap: wrap;
    }
    .cta-bar .cta-text h3 {
        font-size: 1.2rem;
        font-weight: 800;
        color: #EDE9E2;
        margin-bottom: 4px;
    }
    .cta-bar .cta-text p {
        font-size: 0.85rem;
        color: #C9C5BC;
        margin: 0;
    }
    /* Back section */
    .back-section {
        text-align: center;
        padding: 32px 0;
    }
    .back-section .back-helper {
        font-size: 0.82rem;
        color: var(--color-text-soft);
        margin-top: 8px;
    }
    /* Footer */
    .site-footer {
        background: var(--color-primary);
        color: #C9C5BC;
        padding: 60px 0 32px;
        border-top: 1px solid rgba(255,255,255,0.06);
    }
    .site-footer .footer-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 800;
        font-size: 1rem;
        color: #EDE9E2;
        margin-bottom: 12px;
    }
    .site-footer .footer-brand .brand-badge {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        background: var(--color-accent);
        color: var(--color-primary);
        border-radius: 50%;
        font-size: 0.7rem;
        font-weight: 800;
        flex-shrink: 0;
    }
    .site-footer .footer-desc {
        font-size: 0.82rem;
        line-height: 1.7;
        color: #C9C5BC;
        max-width: 300px;
    }
    .site-footer .footer-heading {
        font-size: 0.78rem;
        font-weight: 700;
        letter-spacing: 1px;
        color: #EDE9E2;
        text-transform: uppercase;
        margin-bottom: 16px;
        padding-bottom: 8px;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .site-footer .footer-link {
        display: block;
        font-size: 0.82rem;
        color: #C9C5BC;
        padding: 6px 0;
        transition: all var(--transition);
    }
    .site-footer .footer-link:hover {
        color: var(--color-accent);
        padding-left: 6px;
    }
    .site-footer .footer-divider {
        border-top: 1px solid rgba(255,255,255,0.08);
        margin: 28px 0 20px;
    }
    .site-footer .footer-copyright {
        font-size: 0.75rem;
        color: #8A857C;
        line-height: 1.6;
    }
    @media (max-width: 991px) {
        .site-footer {
            padding: 40px 0 24px;
        }
    }
    /* Mobile adjustments */
    @media (max-width: 767px) {
        .category-hero h1 {
            font-size: 1.4rem;
        }
        .section-title {
            font-size: 1.45rem;
        }
        .cta-bar {
            flex-direction: column;
            text-align: center;
            align-items: stretch;
        }
        .cta-bar .btn {
            width: 100%;
        }
        .filter-pills {
            flex-wrap: nowrap;
            overflow-x: auto;
            padding-bottom: 8px;
            scrollbar-width: thin;
        }
    }
    @media (max-width: 575px) {
        .stat-block .stat-number {
            font-size: 1.7rem;
        }
    }

/* roulang page: article */
:root {
        --color-primary: #161512;
        --color-primary-soft: #2A2822;
        --color-accent: #C9A86A;
        --color-accent-hover: #B8944E;
        --color-bg: #F7F4EE;
        --color-bg-soft: #F0ECE3;
        --color-surface: #FFFFFF;
        --color-border: #E5E0D6;
        --color-text-strong: #1A1A1A;
        --color-text: #3D3A35;
        --color-text-soft: #7A756C;
        --color-success: #3D5A3D;
        --radius-sm: 4px;
        --radius-md: 8px;
        --radius-lg: 12px;
        --shadow-sm: 0 2px 8px rgba(22,21,18,0.04);
        --shadow-md: 0 6px 18px rgba(22,21,18,0.07);
        --shadow-lg: 0 12px 32px rgba(22,21,18,0.10);
        --font-family: 'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
        --transition: 0.25s ease;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-family);
        font-size: 16px;
        line-height: 1.8;
        color: var(--color-text);
        background-color: var(--color-bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        overflow-x: hidden;
    }
    a {
        color: inherit;
        text-decoration: none;
        transition: color var(--transition);
    }
    a:hover {
        color: var(--color-accent);
    }
    img {
        max-width: 100%;
        height: auto;
        border-radius: var(--radius-sm);
    }
    button, input, textarea, select {
        font-family: var(--font-family);
    }
    .container-custom {
        max-width: 1240px;
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
    }
    .container-custom {
        padding-left: 16px;
        padding-right: 16px;
    }
    .btn {
        border-radius: var(--radius-sm);
        transition: all var(--transition);
        font-weight: 500;
    }
    .btn:focus {
        outline: none;
        box-shadow: 0 0 0 2px rgba(201,168,106,0.3);
    }
    .btn-primary {
        background-color: var(--color-accent);
        border-color: var(--color-accent);
        color: #1A1A1A;
        padding: 10px 22px;
        border-radius: var(--radius-sm);
        font-weight: 600;
    }
    .btn-primary:hover, .btn-primary:focus {
        background-color: var(--color-accent-hover);
        border-color: var(--color-accent-hover);
        color: #1A1A1A;
    }
    .btn-primary:active {
        background-color: var(--color-accent-hover) !important;
        border-color: var(--color-accent-hover) !important;
        transform: scale(0.97);
    }
    .btn-outline-dark {
        background: transparent;
        border: 1.5px solid var(--color-primary);
        color: var(--color-primary);
        padding: 10px 22px;
        border-radius: var(--radius-sm);
        font-weight: 600;
    }
    .btn-outline-dark:hover, .btn-outline-dark:focus {
        background: var(--color-primary);
        border-color: var(--color-primary);
        color: #fff;
    }
    .site-navbar {
        background: var(--color-primary);
        min-height: 64px;
        box-shadow: 0 2px 12px rgba(0,0,0,0.25);
        position: sticky;
        top: 0;
        z-index: 1040;
    }
    .site-navbar .navbar-brand {
        font-weight: 800;
        font-size: 1.1rem;
        color: #EDE9E2;
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 8px 0;
        white-space: nowrap;
    }
    .site-navbar .navbar-brand .brand-badge {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--color-accent);
        color: var(--color-primary);
        border-radius: 50%;
        font-size: 0.8rem;
        font-weight: 800;
        flex-shrink: 0;
    }
    .site-navbar .navbar-brand:hover {
        color: var(--color-accent);
    }
    .site-navbar .navbar-toggler {
        border: 1px solid rgba(237,233,226,0.25);
        border-radius: var(--radius-sm);
        padding: 6px 10px;
        color: #EDE9E2;
    }
    .site-navbar .navbar-toggler:focus {
        box-shadow: none;
        border-color: var(--color-accent);
    }
    .site-navbar .navbar-nav .nav-link {
        color: #EDE9E2;
        font-size: 0.88rem;
        font-weight: 500;
        padding: 20px 13px;
        position: relative;
        white-space: nowrap;
        transition: color var(--transition);
    }
    .site-navbar .navbar-nav .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background: var(--color-accent);
        transition: width var(--transition);
    }
    .site-navbar .navbar-nav .nav-link:hover::after,
    .site-navbar .navbar-nav .nav-link.active::after {
        width: 100%;
    }
    .site-navbar .navbar-nav .nav-link:hover,
    .site-navbar .navbar-nav .nav-link.active {
        color: var(--color-accent);
    }
    .nav-arrow {
        font-size: 0.55rem;
        margin-left: 4px;
        color: var(--color-accent);
    }
    .site-navbar .dropdown-menu {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-lg);
        padding: 16px;
        min-width: 270px;
        margin-top: 4px;
    }
    .site-navbar .dropdown-menu .dropdown-section-title {
        font-size: 0.72rem;
        font-weight: 700;
        color: var(--color-text-soft);
        letter-spacing: 1px;
        margin-bottom: 8px;
        padding-bottom: 4px;
        border-bottom: 1px solid var(--color-border);
    }
    .site-navbar .dropdown-menu .dropdown-item {
        display: block;
        padding: 10px 12px;
        font-size: 0.85rem;
        color: var(--color-text-strong);
        border-radius: var(--radius-sm);
        transition: all var(--transition);
    }
    .site-navbar .dropdown-menu .dropdown-item:hover {
        background: #FAF7F0;
        color: var(--color-accent);
        padding-left: 16px;
    }
    @media (max-width: 991px) {
        .site-navbar .navbar-collapse {
            background: var(--color-primary);
            padding: 16px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .site-navbar .navbar-nav .nav-link {
            padding: 12px 8px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .site-navbar .navbar-nav .nav-link::after {
            display: none;
        }
        .site-navbar .dropdown-menu {
            background: var(--color-primary-soft);
            border: none;
            box-shadow: none;
            padding: 8px 0 8px 16px;
            min-width: auto;
        }
        .site-navbar .dropdown-menu .dropdown-item {
            color: #EDE9E2;
            padding: 10px 12px;
        }
        .site-navbar .dropdown-menu .dropdown-item:hover {
            background: rgba(201,168,106,0.1);
            color: var(--color-accent);
        }
        .site-navbar .dropdown-menu .dropdown-section-title {
            color: rgba(237,233,226,0.5);
            border-bottom-color: rgba(255,255,255,0.08);
        }
    }
    .section-block {
        padding: 72px 0;
    }
    .section-block-sm {
        padding: 40px 0;
    }
    .section-title {
        font-size: 1.75rem;
        font-weight: 700;
        color: var(--color-text-strong);
        margin-bottom: 12px;
        letter-spacing: 0.5px;
    }
    .section-subtitle {
        font-size: 0.95rem;
        color: var(--color-text-soft);
        margin-bottom: 36px;
        line-height: 1.7;
    }
    .card-custom {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-sm);
        transition: all var(--transition);
        overflow: hidden;
    }
    .card-custom:hover {
        box-shadow: var(--shadow-md);
        border-color: #D8D2C6;
        transform: translateY(-4px);
    }
    .badge-custom {
        display: inline-block;
        padding: 3px 10px;
        font-size: 0.68rem;
        font-weight: 600;
        letter-spacing: 0.5px;
        border-radius: 20px;
        background: var(--color-primary);
        color: var(--color-accent);
        border: 1px solid rgba(201,168,106,0.3);
    }
    .badge-accent {
        background: var(--color-accent);
        color: var(--color-primary);
        border: none;
    }
    .divider-line {
        height: 1px;
        background: var(--color-border);
        margin: 0;
    }
    .breadcrumb-custom {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.82rem;
        color: var(--color-text-soft);
        list-style: none;
        padding: 0;
        margin: 0 0 24px 0;
        flex-wrap: wrap;
    }
    .breadcrumb-custom li {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .breadcrumb-custom li::after {
        content: '›';
        color: #B8B2A6;
        font-size: 1rem;
        line-height: 1;
    }
    .breadcrumb-custom li:last-child::after {
        display: none;
    }
    .breadcrumb-custom a {
        color: var(--color-text-soft);
        transition: color var(--transition);
    }
    .breadcrumb-custom a:hover {
        color: var(--color-accent);
    }
    .breadcrumb-custom .current {
        color: var(--color-accent);
        font-weight: 500;
    }
    .article-header {
        background: var(--color-bg-soft);
        padding: 48px 0 36px;
        border-bottom: 1px solid var(--color-border);
    }
    .article-header h1 {
        font-size: 2rem;
        font-weight: 800;
        color: var(--color-text-strong);
        letter-spacing: 0.5px;
        line-height: 1.4;
        margin-bottom: 16px;
    }
    .article-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 10px 20px;
        font-size: 0.85rem;
        color: var(--color-text-soft);
        align-items: center;
    }
    .article-meta span {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }
    .article-meta i {
        color: var(--color-accent);
        font-size: 0.75rem;
    }
    .article-cover {
        width: 100%;
        aspect-ratio: 16/10;
        object-fit: cover;
        border-radius: var(--radius-md);
        border: 1px solid var(--color-border);
        box-shadow: var(--shadow-sm);
        margin-bottom: 8px;
    }
    .article-cover-caption {
        font-size: 0.75rem;
        color: var(--color-text-soft);
        text-align: center;
        margin-bottom: 24px;
    }
    .article-body {
        max-width: 760px;
        margin: 0 auto;
        font-size: 1rem;
        line-height: 2.0;
        color: var(--color-text);
        padding: 40px 0;
    }
    .article-body h2 {
        font-size: 1.4rem;
        font-weight: 700;
        color: var(--color-text-strong);
        margin: 32px 0 16px;
        padding-left: 16px;
        border-left: 4px solid var(--color-accent);
        line-height: 1.5;
    }
    .article-body h3 {
        font-size: 1.15rem;
        font-weight: 600;
        color: var(--color-text-strong);
        margin: 24px 0 12px;
        line-height: 1.5;
    }
    .article-body p {
        margin-bottom: 16px;
    }
    .article-body ul,
    .article-body ol {
        margin-bottom: 16px;
        padding-left: 24px;
    }
    .article-body ul li {
        list-style: none;
        position: relative;
        padding-left: 18px;
        margin-bottom: 8px;
    }
    .article-body ul li::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0.75em;
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--color-accent);
    }
    .article-body ol li {
        padding-left: 4px;
        margin-bottom: 8px;
    }
    .article-body ol {
        list-style: none;
        counter-reset: article-list;
    }
    .article-body ol li {
        counter-increment: article-list;
        position: relative;
        padding-left: 28px;
    }
    .article-body ol li::before {
        content: counter(article-list, decimal-leading-zero);
        position: absolute;
        left: 0;
        top: 0.25em;
        font-weight: 700;
        font-size: 0.75rem;
        color: var(--color-accent);
    }
    .article-body blockquote {
        border-left: 4px solid var(--color-accent);
        background: var(--color-bg-soft);
        padding: 16px 20px;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        margin: 20px 0;
        color: var(--color-text);
        font-style: normal;
        line-height: 1.9;
    }
    .article-body img {
        width: 100%;
        border-radius: var(--radius-md);
        margin: 16px 0;
        border: 1px solid var(--color-border);
    }
    .article-body .image-caption {
        font-size: 0.78rem;
        color: var(--color-text-soft);
        text-align: center;
        margin: -8px 0 20px;
    }
    .article-body table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
        font-size: 0.9rem;
    }
    .article-body table th,
    .article-body table td {
        border: 1px solid var(--color-border);
        padding: 10px 14px;
        text-align: left;
    }
    .article-body table th {
        background: var(--color-bg-soft);
        font-weight: 600;
        color: var(--color-text-strong);
    }
    .tag-cloud {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        padding: 24px 0 8px;
        border-top: 1px solid var(--color-border);
        margin-top: 32px;
    }
    .tag-cloud a {
        display: inline-block;
        padding: 6px 16px;
        font-size: 0.78rem;
        color: var(--color-text-soft);
        border: 1px solid var(--color-border);
        border-radius: 20px;
        transition: all var(--transition);
    }
    .tag-cloud a:hover {
        border-color: var(--color-accent);
        color: var(--color-accent);
        background: rgba(201,168,106,0.06);
    }
    .related-card {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
        transition: all var(--transition);
        display: flex;
        flex-direction: column;
        height: 100%;
    }
    .related-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-3px);
    }
    .related-card img {
        width: 100%;
        aspect-ratio: 16/10;
        object-fit: cover;
        border-radius: 0;
    }
    .related-card-body {
        padding: 16px 18px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .related-card-body h3 {
        font-size: 0.95rem;
        font-weight: 600;
        color: var(--color-text-strong);
        margin-bottom: 6px;
        line-height: 1.5;
    }
    .related-card-body .related-meta {
        font-size: 0.75rem;
        color: var(--color-text-soft);
        margin-top: auto;
    }
    .progress-wrap {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        height: 3px;
        background: rgba(237,233,226,0.15);
        z-index: 1039;
    }
    .progress-bar-article {
        height: 3px;
        background: var(--color-accent);
        width: 0%;
        transition: width 0.2s ease;
    }
    .back-section {
        background: var(--color-bg-soft);
        padding: 48px 0;
        text-align: center;
    }
    .back-section .back-info {
        font-size: 0.85rem;
        color: var(--color-text-soft);
        margin-top: 14px;
    }
    .cta-section {
        background: var(--color-primary);
        padding: 64px 0;
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        position: absolute;
        top: -60%;
        right: -20%;
        width: 500px;
        height: 500px;
        border-radius: 50%;
        background: rgba(201,168,106,0.06);
        pointer-events: none;
    }
    .cta-section .cta-title {
        font-size: 1.6rem;
        font-weight: 700;
        color: #EDE9E2;
        margin-bottom: 8px;
        position: relative;
        z-index: 1;
    }
    .cta-section .cta-sub {
        font-size: 0.9rem;
        color: rgba(237,233,226,0.7);
        margin-bottom: 24px;
        position: relative;
        z-index: 1;
    }
    .cta-section .form-control {
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-sm);
        padding: 10px 14px;
        font-size: 0.85rem;
        color: var(--color-text-strong);
        max-width: 360px;
    }
    .cta-section .form-control:focus {
        border-color: var(--color-accent);
        box-shadow: 0 0 0 2px rgba(201,168,106,0.25);
    }
    .site-footer {
        background: var(--color-primary);
        color: #C9C5BC;
        padding: 56px 0 32px;
        border-top: 1px solid rgba(255,255,255,0.06);
    }
    .site-footer .footer-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        font-weight: 700;
        font-size: 1.05rem;
        color: #EDE9E2;
        margin-bottom: 14px;
    }
    .site-footer .footer-brand .brand-badge {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        background: var(--color-accent);
        color: var(--color-primary);
        border-radius: 50%;
        font-size: 0.75rem;
        font-weight: 800;
        flex-shrink: 0;
    }
    .site-footer .footer-desc {
        font-size: 0.82rem;
        color: #C9C5BC;
        line-height: 1.7;
        margin-bottom: 0;
    }
    .site-footer .footer-heading {
        font-size: 0.8rem;
        font-weight: 700;
        color: #EDE9E2;
        letter-spacing: 1px;
        margin-bottom: 16px;
        text-transform: uppercase;
    }
    .site-footer .footer-link {
        display: block;
        font-size: 0.82rem;
        color: #C9C5BC;
        padding: 6px 0;
        transition: color var(--transition);
    }
    .site-footer .footer-link:hover {
        color: var(--color-accent);
    }
    .site-footer .footer-divider {
        height: 1px;
        background: rgba(255,255,255,0.08);
        margin: 32px 0 20px;
    }
    .site-footer .footer-copyright {
        font-size: 0.75rem;
        color: rgba(201,197,188,0.65);
    }
    .not-found-box {
        text-align: center;
        padding: 60px 20px;
        background: var(--color-bg-soft);
        border-radius: var(--radius-md);
        border: 1px solid var(--color-border);
    }
    .not-found-box .nf-icon {
        font-size: 2.5rem;
        color: var(--color-accent);
        margin-bottom: 16px;
    }
    .not-found-box p {
        font-size: 0.95rem;
        color: var(--color-text-soft);
        margin-bottom: 20px;
    }
    @media (max-width: 768px) {
        .section-block {
            padding: 48px 0;
        }
        .article-header h1 {
            font-size: 1.45rem;
        }
        .article-body {
            padding: 28px 0;
            font-size: 0.95rem;
        }
        .article-body h2 {
            font-size: 1.2rem;
        }
        .site-navbar {
            min-height: 56px;
        }
        .progress-wrap {
            top: 56px;
        }
        .cta-section {
            padding: 48px 0;
        }
        .site-footer {
            padding: 40px 0 24px;
        }
    }
    @media (max-width: 576px) {
        .article-meta {
            gap: 6px 14px;
            font-size: 0.78rem;
        }
        .article-header h1 {
            font-size: 1.3rem;
        }
        .related-card-body h3 {
            font-size: 0.88rem;
        }
        .btn {
            padding: 8px 16px;
            font-size: 0.85rem;
        }
        .cta-section .cta-title {
            font-size: 1.3rem;
        }
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}