/* roulang page: index */
:root {
            --color-primary: #0E4740;
            --color-primary-dark: #0C1F1A;
            --color-gold: #DCA85C;
            --color-bg: #F7F4EE;
            --color-bg-alt: #EDE9DF;
            --color-text: #16241F;
            --color-text-sub: #687A73;
            --color-border: #E3DCD0;
            --color-white: #FFFFFF;
            --color-line-soft: rgba(14, 71, 64, 0.10);
            --shadow-card: 0 8px 30px rgba(14, 71, 64, 0.06);
            --shadow-hover: 0 18px 44px rgba(14, 71, 64, 0.12);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-pill: 999px;
            --transition: all 0.2s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--color-sans, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif);
            background-color: var(--color-bg);
            color: var(--color-text);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        h1,
        h2,
        h3,
        h4 {
            font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
            line-height: 1.3;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .cta-primary {
            background: linear-gradient(135deg, #0E4740 0%, #1B6A5A 55%, #2B8C77 110%);
            color: #fff;
            border-radius: var(--radius-pill);
            padding: 14px 36px;
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: none;
        }

        .cta-primary:hover {
            background: linear-gradient(135deg, #0C1F1A 0%, #124E44 55%, #1B6A5A 110%);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            color: #fff;
        }

        .cta-gold {
            background: linear-gradient(135deg, #DCA85C 0%, #C68A3C 100%);
            color: #0C1F1A;
            border-radius: var(--radius-pill);
            padding: 14px 36px;
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: none;
        }

        .cta-gold:hover {
            filter: brightness(1.08);
            transform: translateY(-2px);
            box-shadow: var(--shadow-gold);
            color: #0C1F1A;
        }

        .cta-outline {
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-primary);
            border-radius: var(--radius-pill);
            padding: 14px 36px;
            font-size: 16px;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .cta-outline:hover {
            background: rgba(14, 71, 64, 0.08);
            color: var(--color-primary);
            transform: translateY(-2px);
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(220, 168, 92, 0.16);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            letter-spacing: 0.02em;
        }

        .data-badge {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 4px;
        }

        .data-badge .num {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
            line-height: 1.2;
        }

        .data-badge .num span {
            color: var(--color-gold);
        }

        .data-badge .label {
            font-size: 13px;
            color: var(--color-text-sub);
        }

        .section-padding {
            padding-top: 80px;
            padding-bottom: 80px;
        }

        .card-shadow {
            box-shadow: var(--shadow-card);
            border-radius: var(--radius-lg);
        }

        .card-shadow:hover {
            box-shadow: var(--shadow-hover);
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-sub);
            line-height: 1.8;
        }

        .divider-line {
            height: 1px;
            background: var(--color-line-soft);
            border: none;
        }

        .link-underline {
            position: relative;
        }

        .link-underline::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--color-gold);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }

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

        .faq-item {
            border-bottom: 1px solid var(--color-line-soft);
            padding: 20px 0;
        }

        .faq-item:last-child {
            border-bottom: none;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            padding: 8px 0;
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-question .icon {
            font-size: 20px;
            transition: transform 0.3s ease;
            color: var(--color-gold);
            flex-shrink: 0;
            margin-left: 16px;
        }

        .faq-item.active .faq-question .icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--color-text-sub);
            font-size: 15px;
            padding-left: 0;
        }

        .faq-item.active .faq-answer {
            padding-top: 12px;
            padding-left: 0;
        }

        @media (min-width: 768px) {
            .faq-item.active .faq-answer {
                max-height: 200px;
            }
        }

        .hero-device {
            position: relative;
            border-radius: 32px;
            overflow: hidden;
            background: linear-gradient(145deg, #0E4740 0%, #1B6A5A 60%, #2B8C77 110%);
            min-height: 420px;
        }

        .hero-device::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(12, 31, 26, 0.2) 0%, rgba(12, 31, 26, 0.35) 100%);
            z-index: 1;
        }

        .hero-device .ring-gold {
            position: absolute;
            width: 180px;
            height: 180px;
            border: 2px solid rgba(220, 168, 92, 0.35);
            border-radius: 50%;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: 2;
        }

        .hero-device .ring-gold::after {
            content: '';
            position: absolute;
            inset: -20px;
            border: 1px solid rgba(220, 168, 92, 0.15);
            border-radius: 50%;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text-sub);
        }

        .trust-item svg {
            width: 18px;
            height: 18px;
            stroke: var(--color-gold);
            flex-shrink: 0;
        }

        .step-connector {
            position: absolute;
            top: 56px;
            left: 100%;
            width: 100%;
            height: 1px;
            border-top: 1px dashed rgba(14, 71, 64, 0.25);
            margin-left: 0;
        }

        .cta-banner {
            background: linear-gradient(135deg, #0C1F1A 0%, #0E3A32 50%, #0C1F1A 100%);
            border-radius: 32px;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(220, 168, 92, 0.12) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: 30%;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(220, 168, 92, 0.06) 0%, transparent 70%);
            border-radius: 50%;
        }

        .footer-link {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            display: inline-block;
            padding: 4px 0;
            transition: var(--transition);
        }

        .footer-link:hover {
            color: var(--color-gold);
            transform: translateX(3px);
        }

        @media (max-width: 768px) {
            .container-custom {
                padding-left: 20px;
                padding-right: 20px;
            }

            .section-padding {
                padding-top: 56px;
                padding-bottom: 56px;
            }

            .section-title {
                font-size: 24px;
            }

            .hero-title {
                font-size: 32px !important;
                line-height: 1.3 !important;
            }

            .data-badge .num {
                font-size: 22px;
            }

            .step-connector {
                display: none;
            }

            .cta-banner {
                border-radius: 24px;
                padding: 32px 20px !important;
            }

            .hero-device {
                min-height: 320px;
            }

            .faq-question {
                font-size: 15px;
            }
        }

        @media (max-width: 640px) {
            .hero-device {
                min-height: 280px;
            }

            .trust-item {
                font-size: 13px;
                justify-content: center;
            }
        }

        @media (min-width: 769px) {
            .desktop-only {
                display: block;
            }

            .mobile-only {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .desktop-only {
                display: none;
            }

            .mobile-only {
                display: block;
            }
        }

        .focus-visible:focus-visible {
            outline: 2px solid var(--color-gold);
            outline-offset: 2px;
        }

        .mobile-nav-link {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            font-weight: 500;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            display: block;
            transition: var(--transition);
        }

        .mobile-nav-link:hover {
            color: var(--color-gold);
            padding-left: 8px;
        }

        .mobile-nav-link.active {
            color: var(--color-gold);
            position: relative;
        }

        .mobile-nav-link.active::before {
            content: '';
            position: absolute;
            left: -12px;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-gold);
        }

        .resource-row {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            border: 1px solid var(--color-line-soft);
            border-radius: var(--radius-md);
            transition: var(--transition);
            background: var(--color-white);
        }

        .resource-row:hover {
            box-shadow: var(--shadow-card);
            border-color: rgba(220, 168, 92, 0.4);
        }

        .download-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            transition: var(--transition);
        }

        .download-btn:hover {
            background: var(--color-primary);
            color: #fff;
        }

        .collapse-card {
            border: 1px solid var(--color-line-soft);
            border-radius: var(--radius-md);
            background: var(--color-white);
            overflow: hidden;
            transition: var(--transition);
        }

        .collapse-card:hover {
            box-shadow: var(--shadow-card);
        }

        .collapse-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
        }

        .collapse-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            color: var(--color-text-sub);
            font-size: 14px;
        }

        .collapse-card.open .collapse-body {
            max-height: 160px;
            padding: 0 24px 18px;
        }

        .text-faint-soft {
            color: rgba(136, 103, 64, 0.18);
        }

        .hero-title-strong {
            background: linear-gradient(135deg, #0E4740 0%, #1B6A5A 60%, #2B8C77 110%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .article-entry {
            padding: 24px 0;
            display: flex;
            align-items: center;
            gap: 24px;
            border-bottom: 1px solid var(--color-line-soft);
            transition: var(--transition);
        }

        .article-entry:hover {
            background: rgba(255, 255, 255, 0.6);
            padding-left: 12px;
        }

        @media (max-width: 640px) {
            .article-entry {
                flex-direction: row;
                gap: 16px;
                padding: 16px 0;
            }

            .article-entry .thumb {
                width: 72px !important;
                height: 72px !important;
                border-radius: 12px !important;
                flex-shrink: 0;
            }

            .article-entry .content {
                min-width: 0;
            }

            .article-entry .content .title {
                font-size: 15px !important;
                line-height: 1.4 !important;
                overflow: hidden;
                text-overflow: ellipsis;
                display: -webkit-box;
                -webkit-line-clamp: 2;
                -webkit-box-orient: vertical;
            }

            .article-entry .content .summary {
                display: none;
            }

            .article-entry .meta {
                font-size: 12px !important;
            }
        }

/* roulang page: category1 */
:root {
            --brand: #0E4740;
            --brand-light: #1B6A5A;
            --gold: #DCA85C;
            --gold-dark: #C68A3C;
            --cream: #F7F4EE;
            --tea: #EDE9DF;
            --ink: #16241F;
            --gray-tea: #687A73;
            --gray-light: #94A29C;
            --border-light: #E3DCD0;
            --radius-card: 24px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 30px rgba(14, 71, 64, 0.06);
            --shadow-card-hover: 0 18px 44px rgba(14, 71, 64, 0.12);
            --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--cream);
            color: var(--ink);
            line-height: 1.8;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

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

        @media (max-width: 640px) {
            .container-custom {
                padding-left: 20px;
                padding-right: 20px;
            }
        }

        .link-underline {
            position: relative;
        }

        .link-underline::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -6px;
            height: 2px;
            background: var(--gold);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.2s ease;
        }

        .link-underline:hover::after,
        .link-underline:focus-visible::after {
            transform: scaleX(1);
        }

        .footer-link {
            color: #94A29C;
            font-size: 13px;
            line-height: 2.2;
            transition: color 0.2s ease;
        }

        .footer-link:hover {
            color: #F7F4EE;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--gold-dark);
            background: rgba(220, 168, 92, 0.12);
            padding: 6px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 16px;
        }

        .section-tag::before {
            content: '';
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--gold);
            flex-shrink: 0;
        }

        .section-title {
            font-family: var(--font-serif);
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--ink);
            margin: 0;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 26px;
            }
        }

        .section-desc {
            color: var(--gray-tea);
            font-size: 15px;
            line-height: 1.8;
            margin-top: 12px;
            max-width: 640px;
        }

        .anchor-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            background: var(--tea);
            color: var(--brand);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s ease;
        }

        .anchor-chip:hover {
            background: rgba(220, 168, 92, 0.18);
            color: var(--brand);
        }

        .anchor-chip:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 2px;
        }

        .advantage-card {
            background: #FFFFFF;
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(14, 71, 64, 0.06);
            transition: box-shadow 0.2s ease, transform 0.2s ease;
        }

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

        .advantage-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(14, 71, 64, 0.08);
            color: var(--brand);
            font-size: 20px;
            margin-bottom: 20px;
        }

        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline-item {
            position: relative;
            padding-left: 56px;
            padding-bottom: 40px;
        }

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

        .timeline-item::before {
            content: '';
            position: absolute;
            left: 20px;
            top: 8px;
            bottom: -4px;
            width: 1px;
            background: linear-gradient(to bottom, var(--gold), rgba(14, 71, 64, 0.08));
        }

        .timeline-item:last-child::before {
            height: 36px;
            bottom: auto;
        }

        .timeline-dot {
            position: absolute;
            left: 12px;
            top: 4px;
            width: 17px;
            height: 17px;
            border-radius: 50%;
            background: var(--gold);
            border: 4px solid var(--cream);
            box-shadow: 0 0 0 1px var(--gold);
        }

        .timeline-card {
            background: var(--cream);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            border: 1px solid rgba(14, 71, 64, 0.06);
            transition: box-shadow 0.2s ease;
        }

        .timeline-card:hover {
            box-shadow: var(--shadow-card);
        }

        .step-number {
            font-family: var(--font-serif);
            font-size: 40px;
            font-weight: 700;
            line-height: 1;
            color: var(--gold);
        }

        .badge-gold {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            font-weight: 500;
            color: var(--gold-dark);
            background: rgba(220, 168, 92, 0.14);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
        }

        .download-row {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 24px 28px;
            transition: background-color 0.2s ease;
        }

        .download-row:hover {
            background-color: rgba(14, 71, 64, 0.02);
        }

        .download-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(14, 71, 64, 0.07);
            color: var(--brand);
            font-size: 18px;
            flex-shrink: 0;
        }

        .download-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--brand);
            border: 1px solid rgba(14, 71, 64, 0.25);
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            transition: all 0.2s ease;
            flex-shrink: 0;
        }

        .download-btn:hover {
            background: rgba(14, 71, 64, 0.06);
            border-color: var(--brand);
        }

        .download-btn:focus-visible,
        .anchor-chip:focus-visible,
        .cta-btn:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 2px;
        }

        details.faq-item {
            border-bottom: 1px solid rgba(14, 71, 64, 0.10);
            background: #FFFFFF;
            padding: 0 28px;
            border-radius: 0;
        }

        details.faq-item:first-child {
            border-top-left-radius: var(--radius-card);
            border-top-right-radius: var(--radius-card);
        }

        details.faq-item:last-child {
            border-bottom: none;
            border-bottom-left-radius: var(--radius-card);
            border-bottom-right-radius: var(--radius-card);
        }

        details.faq-item summary {
            cursor: pointer;
            list-style: none;
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--ink);
            transition: color 0.2s ease;
            position: relative;
        }

        details.faq-item summary::-webkit-details-marker {
            display: none;
        }

        details.faq-item summary:hover {
            color: var(--brand);
        }

        details.faq-item summary::after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--gold);
            transition: transform 0.2s ease;
            line-height: 1;
            flex-shrink: 0;
        }

        details.faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        details.faq-item .faq-answer {
            padding: 0 0 22px;
            color: var(--gray-tea);
            line-height: 1.8;
            font-size: 15px;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #DCA85C 0%, #C68A3C 100%);
            color: #1A1308;
            font-size: 15px;
            font-weight: 600;
            padding: 14px 32px;
            border-radius: var(--radius-pill);
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
            white-space: nowrap;
        }

        .cta-btn:hover {
            filter: brightness(1.08);
            transform: translateY(-1px);
            box-shadow: 0 10px 24px rgba(220, 168, 92, 0.35);
        }

        .outline-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 1px solid var(--brand);
            color: var(--brand);
            font-size: 15px;
            font-weight: 500;
            padding: 14px 32px;
            border-radius: var(--radius-pill);
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .outline-btn:hover {
            background: rgba(14, 71, 64, 0.06);
            border-color: var(--brand-light);
            transform: translateY(-1px);
        }

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

        #mobile-menu {
            transform: translateX(100%);
            transition: transform 0.3s ease;
            visibility: hidden;
        }

        #mobile-menu.open {
            transform: translateX(0);
            visibility: visible;
        }

        @media (min-width: 768px) {
            .mobile-only {
                display: none !important;
            }
        }

        @media (max-width: 767px) {
            .desktop-only {
                display: none !important;
            }
        }

        .input-line {
            width: 100%;
            border: 1px solid rgba(255, 255, 255, 0.16);
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-pill);
            padding: 13px 22px;
            font-size: 14px;
            color: #FFFFFF;
            transition: all 0.2s ease;
        }

        .input-line::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }

        .input-line:focus {
            outline: none;
            border-color: var(--gold);
            background: rgba(255, 255, 255, 0.12);
        }

/* roulang page: article */
:root {
            --brand-700: #0E4740;
            --brand-600: #1B6A5A;
            --brand-500: #2B8C77;
            --brand-50: #F0F5F3;
            --gold: #DCA85C;
            --gold-dark: #C68A3C;
            --smoke: #0C1F1A;
            --cloud: #F7F4EE;
            --tea: #EDE9DF;
            --ink: #16241F;
            --ink-2: #687A73;
            --ink-3: #94A29C;
            --line: #E3DCD0;
            --radius-card: 24px;
            --radius-card-sm: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 30px rgba(14, 71, 64, 0.06);
            --shadow-hover: 0 18px 44px rgba(14, 71, 64, 0.12);
            --transition: all 0.2s ease;
        }

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

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

        body {
            margin: 0;
            background: var(--cloud);
            color: var(--ink);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            background: none;
            border: none;
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        .container-custom {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 768px) {
            .container-custom {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        @media (max-width: 767px) {
            .desktop-only {
                display: none !important;
            }
        }

        @media (min-width: 768px) {
            .mobile-only {
                display: none !important;
            }
        }

        .link-underline {
            position: relative;
        }
        .link-underline::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -8px;
            height: 2px;
            background: rgba(14, 71, 64, 0.25);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 0.2s ease;
        }
        .link-underline:hover::after {
            transform: scaleX(1);
        }
        .link-underline:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 4px;
            border-radius: 4px;
        }

        .footer-link {
            color: #94A29C;
            font-size: 13px;
            line-height: 2.2;
            transition: color 0.2s ease;
        }
        .footer-link:hover {
            color: #DCA85C;
        }
        .footer-link:focus-visible {
            outline: 2px solid #DCA85C;
            outline-offset: 4px;
            border-radius: 4px;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--ink-3);
        }
        .breadcrumb a {
            color: var(--ink-2);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--brand-600);
        }
        .breadcrumb .sep {
            color: var(--ink-3);
        }
        .breadcrumb .current {
            color: var(--brand-600);
            max-width: 260px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border-radius: 999px;
            background: var(--tea);
            color: var(--ink-2);
            font-size: 13px;
            transition: all 0.2s ease;
        }
        .tag-pill:hover {
            background: rgba(220, 168, 92, 0.16);
            color: var(--gold-dark);
        }

        .article-content {
            color: var(--ink);
            font-size: 16px;
            line-height: 1.9;
        }
        .article-content > * + * {
            margin-top: 1em;
        }
        .article-content h2 {
            font-family: "Noto Serif SC", "Source Han Serif SC", "Songti SC", SimSun, serif;
            font-size: 24px;
            font-weight: 700;
            color: var(--ink);
            margin-top: 2em;
            padding-bottom: 0.5em;
            border-bottom: 1px solid rgba(14, 71, 64, 0.08);
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--ink);
            margin-top: 1.5em;
            line-height: 1.5;
        }
        .article-content h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--ink);
            margin-top: 1.2em;
        }
        .article-content p {
            margin: 0;
        }
        .article-content a {
            color: var(--brand-600);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--brand-700);
            text-decoration-thickness: 2px;
        }
        .article-content img {
            border-radius: 12px;
            margin: 1.5em 0;
            box-shadow: var(--shadow-card);
        }
        .article-content blockquote {
            border-left: 3px solid var(--gold);
            background: var(--tea);
            padding: 1em 1.5em;
            color: var(--ink-2);
            border-radius: 0 12px 12px 0;
            margin: 1.5em 0;
        }
        .article-content ul,
        .article-content ol {
            padding-left: 1.5em;
            margin: 0;
        }
        .article-content li {
            margin-top: 0.4em;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: 14px;
        }
        .article-content th,
        .article-content td {
            border: 1px solid var(--line);
            padding: 10px 14px;
            text-align: left;
        }
        .article-content th {
            background: var(--tea);
            font-weight: 600;
        }
        .article-content code {
            background: var(--tea);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 0.9em;
        }
        .article-content pre {
            background: var(--smoke);
            color: #fff;
            padding: 20px;
            border-radius: 16px;
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.7;
        }
        .article-content pre code {
            background: transparent;
            padding: 0;
            color: inherit;
        }

        .toc-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
            padding: 16px;
            background: var(--tea);
            border-radius: 16px;
        }
        .toc-bar a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: #fff;
            color: var(--ink-2);
            font-size: 13px;
            border: 1px solid rgba(14, 71, 64, 0.08);
            transition: all 0.2s ease;
        }
        .toc-bar a:hover {
            border-color: rgba(220, 168, 92, 0.4);
            color: var(--gold-dark);
            background: rgba(220, 168, 92, 0.08);
        }

        .related-card {
            display: block;
            background: #fff;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(14, 71, 64, 0.06);
            transition: all 0.2s ease;
        }
        .related-card:hover {
            box-shadow: 0 18px 44px rgba(14, 71, 64, 0.12);
            transform: translateY(-4px);
        }
        .related-card:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 4px;
            border-radius: 24px;
        }

        .cta-banner {
            background: linear-gradient(135deg, #0C1F1A 0%, #0E4740 65%, #1B6A5A 110%);
            border: 1px solid rgba(220, 168, 92, 0.25);
            border-radius: 32px;
            padding: 36px 32px;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -40px;
            width: 220px;
            height: 220px;
            background: rgba(220, 168, 92, 0.1);
            border-radius: 50%;
        }
        .cta-banner::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: 10%;
            width: 180px;
            height: 180px;
            background: rgba(220, 168, 92, 0.06);
            border-radius: 50%;
        }

        .prev-next {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 14px;
        }
        .prev-next a {
            flex: 1;
            text-align: center;
            padding: 10px 14px;
            border-radius: 999px;
            color: #687A73;
            transition: all 0.2s ease;
        }
        .prev-next a:hover {
            color: #0E4740;
            background: rgba(14, 71, 64, 0.05);
        }

        #mobile-menu {
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }

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

        @media (max-width: 640px) {
            .article-content {
                font-size: 15px;
                line-height: 1.85;
            }
            .article-content h2 {
                font-size: 21px;
            }
            .cta-banner {
                padding: 28px 20px;
                border-radius: 24px;
            }
            .prev-next {
                font-size: 13px;
            }
        }

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

/* roulang page: category2 */
:root {
            --brand: #0E4740;
            --brand-light: #1B6A5A;
            --gold: #DCA85C;
            --cloud: #F7F4EE;
            --sand: #EDE9DF;
            --ink: #16241F;
            --graytea: #687A73;
            --pale: #94A29C;
            --line: #E3DCD0;
            --dark: #0C1F1A;
            --radius-card: 24px;
            --radius-medium: 16px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 30px rgba(14, 71, 64, 0.06);
            --shadow-hover: 0 18px 44px rgba(14, 71, 64, 0.12);
            --transition: 0.2s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 120px;
        }
        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--cloud);
            color: var(--ink);
            line-height: 1.8;
            margin: 0;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
        }
        .container-custom {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 1024px) {
            .container-custom {
                padding-left: 24px;
                padding-right: 24px;
            }
        }
        .section-padding {
            padding-top: 80px;
            padding-bottom: 80px;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding-top: 56px;
                padding-bottom: 56px;
            }
        }
        .link-underline {
            position: relative;
        }
        .link-underline::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -6px;
            width: 100%;
            height: 2px;
            background: var(--gold);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform var(--transition);
        }
        .link-underline:hover::after {
            transform: scaleX(1);
        }
        .link-underline.active {
            color: var(--brand);
        }
        .link-underline.active::after {
            transform: scaleX(1);
            background: var(--gold);
        }
        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #DCA85C 0%, #C68A3C 100%);
            color: #16241F;
            font-size: 15px;
            font-weight: 500;
            padding: 12px 28px;
            border-radius: 999px;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-gold:hover {
            filter: brightness(1.08);
        }
        .btn-gold:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 2px;
        }
        .btn-gold-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 1px solid var(--brand);
            color: var(--brand);
            font-size: 15px;
            font-weight: 500;
            padding: 12px 28px;
            border-radius: 999px;
            transition: all var(--transition);
            background: transparent;
            cursor: pointer;
        }
        .btn-gold-outline:hover {
            background: rgba(14, 71, 64, 0.06);
        }
        .btn-gold-outline:focus-visible {
            outline: 2px solid var(--brand);
            outline-offset: 2px;
        }
        .hero-help {
            background: linear-gradient(135deg, #F7F4EE 0%, #EDE9DF 100%);
            padding-top: 130px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(14, 71, 64, 0.08);
        }
        @media (max-width: 768px) {
            .hero-help {
                padding-top: 116px;
                padding-bottom: 36px;
            }
        }
        .anchor-nav {
            position: sticky;
            top: 120px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .anchor-link {
            display: block;
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 14px;
            color: #687A73;
            transition: all var(--transition);
            background: transparent;
            white-space: nowrap;
        }
        .anchor-link:hover {
            background: rgba(14, 71, 64, 0.06);
            color: #0E4740;
        }
        .anchor-link.active {
            background: #0E4740 !important;
            color: #fff !important;
        }
        .anchor-link:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 2px;
        }
        .scroll-capsules {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding-bottom: 4px;
        }
        .scroll-capsules::-webkit-scrollbar {
            display: none;
        }
        .faq-group {
            scroll-margin-top: 120px;
        }
        .faq-group-title {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        .faq-group-title .group-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: rgba(220, 168, 92, 0.16);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: #C68A3C;
        }
        .faq-item {
            background: #fff;
            border: 1px solid rgba(14, 71, 64, 0.08);
            border-radius: 16px;
            padding: 20px 24px;
            margin-bottom: 12px;
            transition: box-shadow var(--transition), border-color var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
            border-color: rgba(220, 168, 92, 0.35);
        }
        .faq-item summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 15px;
            font-weight: 500;
            color: #16241F;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            transition: transform 0.3s ease;
            color: #DCA85C;
            flex-shrink: 0;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            font-size: 14px;
            color: #687A73;
            line-height: 1.9;
            border-top: 1px solid rgba(14, 71, 64, 0.06);
            margin-top: 14px;
            padding-top: 12px;
        }
        .footer-link {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            line-height: 2.4;
            transition: color var(--transition);
            display: inline-block;
        }
        .footer-link:hover {
            color: #DCA85C;
        }
        .mobile-menu-link {
            color: rgba(255, 255, 255, 0.75);
            font-size: 16px;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: color var(--transition);
        }
        .mobile-menu-link:hover {
            color: #fff;
        }
        .mobile-menu-link.active {
            color: #DCA85C;
            font-weight: 500;
        }
        .back-top {
            transition: color var(--transition);
        }
        .back-top:hover {
            color: #DCA85C;
        }
        .focus-visible-ring {
            outline: none;
        }
        .focus-visible-ring:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(220, 168, 92, 0.16);
            color: #8A6220;
            font-size: 13px;
            font-weight: 500;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #C68A3C;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }