/* roulang page: index */
:root {
            --brand: #0C6C59;
            --brand-700: #094C40;
            --brand-800: #07382F;
            --paper: #F5F3ED;
            --ink: #1D241F;
            --muted: #6B6F67;
            --line: #E2DFD4;
            --accent: #DE7C44;
            --radius: 1.25rem;
            --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.04), 0 12px 30px -20px rgba(0, 0, 0, 0.2);
            --shadow-hover: 0 2px 4px rgba(0, 0, 0, 0.05), 0 24px 45px -28px rgba(7, 56, 47, 0.3);
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 104px;
        }

        body {
            margin: 0;
            background: var(--paper);
            color: var(--ink);
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

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

        h1,
        h2,
        h3,
        h4,
        p,
        figure,
        blockquote,
        dl,
        dd {
            margin: 0;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

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

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

        button {
            font: inherit;
            cursor: pointer;
            border: 0;
        }

        ::selection {
            background: rgba(12, 108, 89, 0.2);
        }

        :focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(12, 108, 89, 0.2);
        }

        .body-lock {
            overflow: hidden;
        }

        .container-page {
            width: 100%;
            max-width: 1240px;
            margin-inline: auto;
            padding-inline: 1rem;
        }

        @media (min-width: 768px) {
            .container-page {
                padding-inline: 1.5rem;
            }
        }

        .section {
            padding-block: 3.5rem;
        }

        @media (min-width: 768px) {
            .section {
                padding-block: 5rem;
            }
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 0.55rem;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
            color: var(--brand-700);
        }

        .section-eyebrow::before {
            content: '';
            width: 18px;
            height: 2px;
            border-radius: 999px;
            background: var(--accent);
        }

        .section-no {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 42px;
            height: 42px;
            padding-inline: 0.5rem;
            border-radius: 999px;
            border: 1px solid var(--line);
            background: #fff;
            color: var(--muted);
            font-size: 13px;
            font-weight: 700;
        }

        .nav-link {
            position: relative;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 0.8rem;
            border-radius: 999px;
            color: #4A5048;
            font-weight: 500;
            transition: color 200ms ease, background-color 200ms ease;
        }

        .nav-link:hover {
            color: var(--brand-700);
            background: rgba(12, 108, 89, 0.06);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0.85rem;
            right: 0.85rem;
            bottom: 0.15rem;
            height: 2px;
            border-radius: 999px;
            background: var(--brand);
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform 180ms ease;
        }

        .nav-link.active {
            color: var(--brand-700);
            font-weight: 600;
            background: rgba(12, 108, 89, 0.05);
        }

        .nav-link.active::after,
        .nav-link[aria-current="page"]::after {
            transform: scaleX(1);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.55rem;
            padding: 0.7rem 1.3rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            white-space: nowrap;
            transition: color 200ms ease, background-color 200ms ease, border-color 200ms ease, transform 200ms ease, box-shadow 200ms ease;
        }

        .btn-lg {
            padding: 0.9rem 1.7rem;
            font-size: 16px;
        }

        .btn-primary {
            background: var(--brand);
            color: #fff;
            box-shadow: 0 8px 22px -16px rgba(12, 108, 89, 0.8);
        }

        .btn-primary:hover {
            background: var(--brand-700);
            transform: translateY(-1px);
            box-shadow: 0 12px 25px -16px rgba(12, 108, 89, 0.9);
        }

        .btn-primary:active {
            transform: translateY(0) scale(0.98);
            filter: brightness(0.96);
        }

        .btn-secondary {
            background: #fff;
            color: var(--ink);
            border: 1px solid var(--line);
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
        }

        .btn-secondary:hover {
            border-color: var(--brand);
            color: var(--brand-700);
            background: #fff;
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            transform: translateY(0) scale(0.98);
        }

        .btn-white {
            background: #fff;
            color: var(--brand-800);
        }

        .btn-white:hover {
            background: #f5f1e8;
            color: var(--brand-700);
            transform: translateY(-1px);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            border-radius: 999px;
            padding: 0.2rem 0.7rem;
            font-size: 13px;
            font-weight: 500;
            color: #49594F;
            background: rgba(12, 108, 89, 0.07);
            line-height: 1.5;
            white-space: nowrap;
        }

        .tag-dark {
            background: rgba(255, 255, 255, 0.14);
            color: rgba(255, 255, 255, 0.92);
        }

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

        .card-hover {
            transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
        }

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

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

        .news-row {
            transition: background-color 200ms ease;
        }

        .news-row:hover {
            background: #FBFAF6;
        }

        .news-row:hover .news-title {
            color: var(--brand-700);
        }

        .news-title {
            transition: color 200ms ease;
        }

        .cmd-overlay {
            display: none;
            position: fixed;
            inset: 0;
            z-index: 100;
            padding: 14vh 1rem 2rem;
            background: rgba(7, 56, 47, 0.52);
            overflow-y: auto;
        }

        .cmd-overlay.open {
            display: block;
        }

        .cmd-panel {
            width: min(680px, 100%);
            margin-inline: auto;
            background: #fff;
            border-radius: 1.5rem;
            overflow: hidden;
            box-shadow: 0 30px 80px -30px rgba(7, 56, 47, 0.5);
        }

        .mobile-nav {
            display: none;
        }

        .mobile-nav.open {
            display: block;
        }

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

        details.faq-item summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.25rem;
            padding-block: 1.15rem;
            border-radius: 0;
            user-select: none;
            transition: color 180ms ease;
        }

        details.faq-item summary:hover {
            color: var(--brand-700);
        }

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

        .faq-icon {
            position: relative;
            flex: none;
            width: 30px;
            height: 30px;
            border-radius: 999px;
            border: 1px solid var(--line);
            background: #fff;
            transition: transform 220ms ease, background-color 220ms ease, border-color 220ms ease;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 12px;
            height: 2px;
            background: var(--brand);
            border-radius: 999px;
            transform: translate(-50%, -50%);
        }

        .faq-icon::after {
            transform: translate(-50%, -50%) rotate(90deg);
        }

        details[open] .faq-icon {
            transform: rotate(45deg);
            background: var(--brand);
            border-color: var(--brand);
        }

        details[open] .faq-icon::before,
        details[open] .faq-icon::after {
            background: #fff;
        }

        @media (max-width: 767px) {
            .hero-title {
                font-size: 40px;
                line-height: 1.18;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 34px;
                line-height: 1.2;
            }

            .btn-lg {
                padding-inline: 1.25rem;
            }
        }

/* roulang page: article */
:root {
            --brand: #0C6C59;
            --brand-deep: #094C40;
            --brand-dark: #07382F;
            --paper: #F5F3ED;
            --ink: #1D241F;
            --muted: #6B6F67;
            --border: #E2DFD4;
            --accent: #DE7C44;
            --surface: #FFFFFF;
            --radius: 1rem;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--paper);
            color: var(--ink);
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 200ms ease, border-color 200ms ease, background-color 200ms ease, transform 200ms ease, box-shadow 200ms ease, opacity 200ms ease;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: 0;
            background: none;
        }

        .container-page {
            width: 100%;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 768px) {
            .container-page {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        .text-link {
            color: var(--brand);
            transition: color 200ms ease, border-color 200ms ease;
        }

        .text-link:hover {
            color: var(--brand-deep);
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            border-radius: 999px;
            font-weight: 600;
            line-height: 1;
            padding: .875rem 1.6rem;
            transition: background-color 200ms ease, border-color 200ms ease, color 200ms ease, transform 200ms ease, box-shadow 200ms ease;
            outline: none;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid rgba(12, 108, 89, .45);
            outline-offset: 3px;
        }

        .btn-primary {
            background: var(--brand);
            color: #fff;
            box-shadow: 0 8px 18px -10px rgba(12, 108, 89, .55);
        }

        .btn-primary:hover {
            background: var(--brand-deep);
            transform: translateY(-1px);
            box-shadow: 0 14px 28px -14px rgba(12, 108, 89, .55);
        }

        .btn-primary:active {
            background: var(--brand-dark);
            transform: translateY(0);
            filter: brightness(.96);
        }

        .btn-secondary {
            background: #fff;
            border: 1px solid var(--border);
            color: var(--ink);
        }

        .btn-secondary:hover {
            border-color: var(--brand);
            color: var(--brand);
        }

        .btn-secondary:active {
            background: #F2F7F4;
        }

        .btn-on-dark {
            background: var(--brand);
            color: #fff;
        }

        .btn-on-dark:hover {
            background: #27947a;
            transform: translateY(-1px);
        }

        .btn-on-dark:active {
            background: var(--brand-deep);
            transform: translateY(0);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            border-radius: 999px;
            padding: .32rem .8rem;
            font-size: 13px;
            line-height: 1;
            background: rgba(12, 108, 89, .1);
            color: var(--brand-deep);
            font-weight: 500;
            border: 1px solid rgba(12, 108, 89, .08);
            white-space: nowrap;
        }

        .field {
            width: 100%;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: white;
            padding: .95rem 1.3rem;
            font-size: 15px;
            color: var(--ink);
            outline: none;
            transition: border-color 200ms ease, box-shadow 200ms ease;
        }

        .field::placeholder {
            color: #9a9f95;
        }

        .field:focus {
            border-color: var(--brand);
            box-shadow: 0 0 0 4px rgba(12, 108, 89, .14);
        }

        .navbar {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 223, 212, .85);
        }

        .nav-link {
            display: inline-block;
            padding: .55rem .85rem;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: #4d5851;
            transition: color 200ms ease, background-color 200ms ease;
            position: relative;
        }

        .nav-link:hover {
            color: var(--brand);
            background: rgba(12, 108, 89, .07);
        }

        .nav-link.active {
            color: var(--brand);
            background: rgba(12, 108, 89, .1);
            font-weight: 600;
        }

        .nav-search {
            display: flex;
            align-items: center;
            width: 260px;
            height: 42px;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: #fff;
            padding-left: .9rem;
            padding-right: .45rem;
            color: #72796f;
            transition: border-color 200ms ease, box-shadow 200ms ease, background-color 200ms ease;
            cursor: text;
        }

        .nav-search:hover {
            border-color: rgba(12, 108, 89, .45);
            background: #fbfcf9;
        }

        .nav-search:focus-within {
            border-color: rgba(12, 108, 89, .55);
            box-shadow: 0 0 0 4px rgba(12, 108, 89, .1);
        }

        .kbd {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 32px;
            height: 26px;
            padding: 0 .4rem;
            border-radius: 7px;
            border: 1px solid #dfe2da;
            background: #f4f5f1;
            font-size: 12px;
            color: #6f756a;
            font-weight: 600;
        }

        .section-h2 {
            font-size: 28px;
            line-height: 1.3;
            letter-spacing: -0.02em;
            font-weight: 750;
            color: var(--ink);
        }

        @media (min-width: 768px) {
            .section-h2 {
                font-size: 38px;
            }
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            color: var(--brand);
            font-weight: 600;
            font-size: 14px;
        }

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

        .link-arrow {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
            font-weight: 600;
            color: var(--brand);
            transition: gap 200ms ease, color 200ms ease;
        }

        .link-arrow:hover {
            gap: .65rem;
            color: var(--brand-deep);
        }

        .article-lede {
            background-image:
                linear-gradient(180deg, rgba(245, 243, 237, .92), rgba(245, 243, 237, .96)),
                url('/assets/images/backpic/back-1.png');
            background-position: center;
            background-size: cover;
            background-repeat: no-repeat;
        }

        .cms-content {
            color: #2a322b;
            font-size: 16px;
            line-height: 1.9;
            word-break: break-word;
        }

        .cms-content>p {
            margin: 0 0 1.5em;
        }

        .cms-content h1,
        .cms-content h2,
        .cms-content h3,
        .cms-content h4 {
            color: var(--ink);
            font-weight: 750;
            line-height: 1.4;
            letter-spacing: -0.018em;
            margin: 1.75em 0 .7em;
        }

        .cms-content h1 {
            font-size: 30px;
        }

        .cms-content h2 {
            font-size: 26px;
            padding-bottom: .45rem;
            border-bottom: 1px solid var(--border);
        }

        .cms-content h3 {
            font-size: 20px;
        }

        .cms-content h4 {
            font-size: 17px;
        }

        .cms-content ul,
        .cms-content ol {
            margin: 0 0 1.5em;
            padding-left: 1.5rem;
        }

        .cms-content ul {
            list-style: disc;
        }

        .cms-content ol {
            list-style: decimal;
        }

        .cms-content li {
            margin-bottom: .45em;
        }

        .cms-content blockquote {
            margin: 2em 0;
            padding: 1rem 1.5rem;
            border-left: 4px solid var(--brand);
            border-radius: 0 14px 14px 0;
            background: rgba(12, 108, 89, .07);
            color: #3c483f;
            font-style: normal;
        }

        .cms-content blockquote p:last-child {
            margin-bottom: 0;
        }

        .cms-content a {
            color: var(--brand);
            text-decoration: underline;
            text-underline-offset: 4px;
            text-decoration-color: rgba(12, 108, 89, .3);
        }

        .cms-content a:hover {
            text-decoration-color: var(--brand);
            color: var(--brand-deep);
        }

        .cms-content code {
            font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
            font-size: .9em;
            background: #eef1ec;
            color: #174a3d;
            padding: .18rem .45rem;
            border-radius: 7px;
            border: 1px solid #e0e5dd;
        }

        .cms-content pre {
            background: #0f241f;
            color: #e6f0ec;
            border-radius: 16px;
            padding: 1.3rem 1.5rem;
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.7;
            margin: 0 0 1.8em;
        }

        .cms-content pre code {
            background: transparent;
            border: 0;
            color: inherit;
            padding: 0;
            font-size: 1em;
        }

        .cms-content table {
            display: block;
            width: 100%;
            max-width: 100%;
            overflow-x: auto;
            border-collapse: collapse;
            margin: 0 0 1.8em;
            font-size: 15px;
            background: white;
            border-radius: 14px;
        }

        .cms-content th,
        .cms-content td {
            border: 1px solid var(--border);
            padding: .65rem .9rem;
            text-align: left;
            white-space: nowrap;
        }

        .cms-content th {
            background: #f2f4ef;
            font-weight: 650;
            color: var(--ink);
        }

        .cms-content img {
            border-radius: 18px;
            margin: 1.5rem 0;
            box-shadow: 0 6px 26px -18px rgba(0, 0, 0, .35);
        }

        .cms-content hr {
            border: 0;
            border-top: 1px solid var(--border);
            margin: 2.5rem 0;
        }

        .pager-card {
            display: block;
            height: 100%;
            border: 1px solid var(--border);
            border-radius: 1rem;
            background: #fff;
            padding: 1.2rem 1.35rem;
            box-shadow: 0 1px 2px rgba(0, 0, 0, .03);
            transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
        }

        .pager-card:hover {
            border-color: rgba(12, 108, 89, .4);
            box-shadow: 0 2px 6px rgba(0, 0, 0, .04), 0 20px 40px -24px rgba(6, 46, 39, .22);
            transform: translateY(-2px);
        }

        .pager-card:hover .pager-title {
            color: var(--brand);
        }

        .mobile-panel {
            max-height: calc(100vh - 76px);
            overflow-y: auto;
            overscroll-behavior: contain;
        }

        .modal-backdrop {
            background: rgba(20, 29, 24, .28);
            backdrop-filter: blur(3px);
        }

        .command-item {
            display: flex;
            align-items: center;
            gap: .8rem;
            padding: .8rem 1rem;
            border-radius: .85rem;
            transition: background-color 200ms ease;
        }

        .command-item:hover {
            background: rgba(12, 108, 89, .08);
        }

/* roulang page: category1 */
:root {
            --brand: #0C6C59;
            --brand-deep: #094C40;
            --brand-dark: #07382F;
            --brand-soft: #EDF7F2;
            --accent: #DE7C44;
            --paper: #F5F3ED;
            --surface: #FFFFFF;
            --ink: #1D241F;
            --muted: #6B6F67;
            --line: #E2DFD4;
            --radius: 1rem;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 12px 30px -20px rgba(0, 0, 0, 0.2);
            --shadow-hover: 0 2px 4px rgba(0, 0, 0, 0.04), 0 18px 38px -22px rgba(0, 0, 0, 0.28);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--paper);
            color: var(--ink);
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

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

        button,
        input {
            font: inherit;
        }

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

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

        .container-page {
            width: 100%;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 768px) {
            .container-page {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 253, 249, 0.86);
            -webkit-backdrop-filter: blur(14px);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--line);
        }

        .header-inner {
            display: flex;
            height: 68px;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }

        @media (min-width: 768px) {
            .header-inner {
                height: 72px;
            }
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            border-radius: 9999px;
            padding: 0.45rem 0.9rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--muted);
            transition: color 200ms ease, background 200ms ease, box-shadow 200ms ease;
        }

        .nav-link:hover {
            color: var(--brand);
            background: rgba(12, 108, 89, 0.06);
        }

        .nav-link.active {
            color: var(--brand);
            background: rgba(12, 108, 89, 0.1);
            font-weight: 600;
        }

        .command-trigger {
            display: inline-flex;
            align-items: center;
            justify-content: space-between;
            width: 250px;
            height: 40px;
            border-radius: 9999px;
            border: 1px solid var(--line);
            background: var(--paper);
            padding: 0 12px;
            color: var(--muted);
            font-size: 13px;
            transition: border-color 200ms ease, background 200ms ease, box-shadow 200ms ease;
        }

        .command-trigger:hover,
        .command-trigger:focus-within {
            border-color: rgba(12, 108, 89, 0.45);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(12, 108, 89, 0.1);
        }

        .kbd {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 34px;
            height: 22px;
            border-radius: 6px;
            border: 1px solid var(--line);
            background: #fff;
            color: var(--muted);
            font-size: 11px;
            font-weight: 600;
            padding: 0 5px;
            line-height: 1;
        }

        .icon-btn {
            display: inline-flex;
            height: 40px;
            width: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 9999px;
            border: 1px solid var(--line);
            background: #fff;
            color: var(--ink);
            transition: color 200ms ease, border-color 200ms ease, background 200ms ease;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 14px;
            line-height: 1;
            padding: 0.75rem 1.25rem;
            transition: transform 200ms ease, box-shadow 200ms ease, background 200ms ease, color 200ms ease, border-color 200ms ease;
        }

        .btn-primary {
            background: var(--brand);
            border: 1px solid var(--brand);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--brand-deep);
            border-color: var(--brand-deep);
            transform: translateY(-1px);
            box-shadow: 0 10px 22px -12px rgba(12, 108, 89, 0.6);
        }

        .btn-primary:active {
            transform: translateY(0);
            filter: saturate(0.9);
        }

        .btn-ghost {
            background: #fff;
            border: 1px solid var(--line);
            color: var(--ink);
        }

        .btn-ghost:hover {
            border-color: var(--brand);
            color: var(--brand);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-lite {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.24);
            color: #fff;
        }

        .btn-lite:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.55);
            transform: translateY(-1px);
        }

        .btn:focus-visible,
        .icon-btn:focus-visible,
        .nav-link:focus-visible,
        a:focus-visible,
        .faq-question:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(12, 108, 89, 0.22);
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--brand);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.02em;
        }

        .eyebrow::before {
            content: '';
            width: 22px;
            height: 2px;
            border-radius: 999px;
            background: var(--brand);
        }

        .hero-section {
            position: relative;
            overflow: hidden;
            isolation: isolate;
            background: var(--paper);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: -2;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.14;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: -1;
            background: linear-gradient(90deg, var(--paper) 0%, rgba(245, 243, 237, 0.92) 55%, rgba(245, 243, 237, 0.64) 100%);
        }

        .hero-panel {
            position: relative;
            overflow: hidden;
            border-radius: 1.5rem;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-hover);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            border-radius: 999px;
            background: rgba(12, 108, 89, 0.1);
            color: var(--brand);
            font-size: 13px;
            font-weight: 600;
            padding: 0.35rem 0.85rem;
        }

        .topic-layout {
            display: flex;
            flex-direction: column;
            gap: 2.5rem;
            align-items: stretch;
        }

        .topic-main {
            order: 2;
            min-width: 0;
        }

        .topic-toc {
            order: 1;
            min-width: 0;
        }

        @media (min-width: 1024px) {
            .topic-layout {
                display: grid;
                grid-template-columns: minmax(0, 1fr) 320px;
                gap: 3.5rem;
                align-items: start;
            }

            .topic-main {
                order: 1;
            }

            .topic-toc {
                order: 2;
                position: sticky;
                top: 6.5rem;
            }
        }

        .topic-section {
            scroll-margin-top: 6.5rem;
            margin-bottom: 3.75rem;
        }

        .topic-section:last-child {
            margin-bottom: 0;
        }

        .toc-card {
            border: 1px solid var(--line);
            border-radius: 1rem;
            background: #fff;
            box-shadow: var(--shadow-sm);
            padding: 1.4rem;
        }

        .toc-title {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-weight: 700;
            font-size: 15px;
            color: var(--ink);
        }

        .toc-list {
            list-style: none;
            margin: 0;
            padding: 0;
            margin-top: 1rem;
        }

        .toc-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            padding: 0.6rem 0.75rem;
            border-radius: 0.75rem;
            color: var(--muted);
            font-size: 14px;
            transition: color 200ms ease, background 200ms ease;
        }

        .toc-list a:hover {
            color: var(--brand);
            background: var(--brand-soft);
        }

        .feature-line {
            display: grid;
            grid-template-columns: 48px 1fr;
            gap: 1rem;
            align-items: start;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 1rem;
            padding: 1.25rem 1.25rem;
            box-shadow: var(--shadow-sm);
            transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
        }

        .feature-line:hover {
            border-color: rgba(12, 108, 89, 0.4);
            box-shadow: var(--shadow-hover);
            transform: translateY(-1px);
        }

        .feature-icon {
            display: inline-flex;
            height: 44px;
            width: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 0.85rem;
            background: var(--brand-soft);
            color: var(--brand);
        }

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

        .guide-item {
            position: relative;
            padding: 1.15rem 0 1.15rem 3.25rem;
            border-bottom: 1px solid var(--line);
        }

        .guide-item:before {
            counter-increment: guide;
            content: '0' counter(guide);
            position: absolute;
            left: 0;
            top: 1.2rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: var(--paper);
            border: 1px solid var(--line);
            color: var(--brand);
            font-size: 13px;
            font-weight: 800;
        }

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

        .cadence-list li {
            display: grid;
            grid-template-columns: 104px 1fr;
            gap: 1rem;
            padding: 1.1rem 0;
            border-bottom: 1px solid var(--line);
        }

        .cadence-tag {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            align-self: start;
            min-height: 30px;
            border-radius: 999px;
            padding: 0.15rem 0.75rem;
            background: var(--brand-soft);
            color: var(--brand);
            font-size: 12px;
            font-weight: 700;
            white-space: nowrap;
        }

        .faq-box {
            border-top: 1px solid var(--line);
        }

        .faq-item {
            border-bottom: 1px solid var(--line);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 0;
            text-align: left;
            color: var(--ink);
            font-weight: 600;
            font-size: 15px;
            transition: color 200ms ease;
        }

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

        .faq-question[aria-expanded="true"] {
            color: var(--brand);
        }

        .faq-icon {
            flex: 0 0 auto;
            display: inline-flex;
            height: 28px;
            width: 28px;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid var(--line);
            color: var(--muted);
            transition: transform 200ms ease, color 200ms ease, border-color 200ms ease, background 200ms ease;
        }

        .faq-item.is-open .faq-icon {
            transform: rotate(45deg);
            color: var(--brand);
            border-color: var(--brand);
            background: var(--brand-soft);
        }

        .faq-panel {
            max-height: 0;
            overflow: hidden;
            transition: max-height 240ms ease;
        }

        .faq-panel-inner {
            padding-bottom: 1.25rem;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.85;
        }

        .cta-panel {
            border-radius: 1.75rem;
            background: var(--brand-dark);
            color: #fff;
            box-shadow: var(--shadow-hover);
            position: relative;
            overflow: hidden;
        }

        .cta-panel ::selection {
            background: rgba(255, 255, 255, 0.2);
        }

        .subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            max-width: 460px;
        }

        .subscribe-form input[type="email"] {
            width: 100%;
            border-radius: 9999px;
            border: 1px solid rgba(255, 255, 255, 0.4);
            background: #fff;
            color: var(--ink);
            padding: 0.8rem 1.2rem;
            outline: none;
            transition: box-shadow 200ms ease, border-color 200ms ease;
        }

        .subscribe-form input[type="email"]:focus {
            border-color: rgba(255, 255, 255, 0.85);
            box-shadow: 0 0 0 5px rgba(255, 255, 255, 0.18);
        }

        .mobile-menu {
            background: #fffdf9;
            border-bottom: 1px solid var(--line);
        }

        .mobile-menu a {
            display: block;
            padding: 0.7rem 0.75rem;
            border-radius: 0.75rem;
            font-weight: 500;
            color: var(--ink);
            transition: color 200ms ease, background 200ms ease;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active-mobile {
            color: var(--brand);
            background: var(--brand-soft);
        }

        .command-layer {
            position: fixed;
            inset: 0;
            z-index: 100;
            display: none;
            align-items: flex-start;
            justify-content: center;
        }

        .command-layer.is-open {
            display: flex;
        }

        .command-backdrop {
            position: absolute;
            inset: 0;
            background: rgba(15, 20, 17, 0.32);
            -webkit-backdrop-filter: blur(4px);
            backdrop-filter: blur(4px);
        }

        .command-dialog {
            position: relative;
            width: min(680px, calc(100vw - 2rem));
            margin-top: clamp(4rem, 12vh, 8rem);
            border: 1px solid var(--line);
            border-radius: 1.5rem;
            background: #fff;
            box-shadow: 0 30px 80px -24px rgba(0, 0, 0, 0.4);
            overflow: hidden;
        }

        .command-input-row {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            border-bottom: 1px solid var(--line);
            padding: 1rem 1.25rem;
        }

        .command-input-row input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            font-size: 16px;
            color: var(--ink);
        }

        .command-input-row input::placeholder {
            color: var(--muted);
        }

        .command-label {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--muted);
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            padding: 0.9rem 1.25rem 0.25rem;
        }

        .command-list {
            padding: 0.35rem 0.75rem 1rem;
        }

        .command-item {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            border-radius: 0.85rem;
            padding: 0.65rem 0.65rem;
            color: var(--ink);
            transition: background 150ms ease, color 150ms ease;
        }

        .command-item:hover {
            background: var(--brand-soft);
            color: var(--brand);
        }

        .command-item svg {
            color: var(--muted);
        }

        .command-item:hover svg {
            color: var(--brand);
        }

        .command-arrow {
            margin-left: auto;
            color: var(--line);
        }

        .command-item:hover .command-arrow {
            color: var(--brand);
            transform: translateX(2px);
        }

        .sticky-cta {
            background: var(--brand-soft);
            border: 1px solid rgba(12, 108, 89, 0.15);
            border-radius: 1rem;
        }

        @media (max-width: 1023px) {
            .sticky-position-bridge {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .command-trigger {
                display: none;
            }

            .subscribe-form .btn {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --brand-500: #0C6C59;
            --brand-700: #094C40;
            --brand-900: #07382F;
            --accent-500: #DE7C44;
            --cream: #F5F3ED;
            --ink: #1D241F;
            --muted: #6B6F67;
            --line: #E2DFD4;
            --card-shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 12px 30px -20px rgba(0, 0, 0, 0.2);
            --card-shadow-hover: 0 2px 4px rgba(0, 0, 0, 0.05), 0 20px 40px -24px rgba(7, 56, 47, 0.35);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--cream);
            color: var(--ink);
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            letter-spacing: 0.01em;
            line-height: 1.8;
            text-rendering: optimizeLegibility;
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        a,
        button,
        input,
        summary {
            -webkit-tap-highlight-color: transparent;
        }

        :where(a, button, input, textarea, summary):focus-visible {
            outline: 2px solid rgba(12, 108, 89, 0.45);
            outline-offset: 3px;
            border-radius: 8px;
        }

        .container-page {
            width: 100%;
            max-width: 1240px;
            margin-inline: auto;
            padding-inline: 1rem;
        }

        @media (min-width: 768px) {
            .container-page {
                padding-inline: 1.5rem;
            }
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            padding: 0.58rem 0.9rem;
            font-size: 0.925rem;
            font-weight: 500;
            color: #46504a;
            line-height: 1;
            transition: color 200ms ease, background-color 200ms ease;
            position: relative;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--brand-500);
            background: rgba(12, 108, 89, 0.08);
        }

        .nav-link.active {
            color: var(--brand-600, #0A5B50);
            background: rgba(12, 108, 89, 0.1);
            font-weight: 650;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 1rem;
            right: 1rem;
            bottom: 0.15rem;
            height: 2px;
            border-radius: 999px;
            background: var(--brand-500);
        }

        .btn-primary,
        .btn-secondary,
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.45rem;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.95rem;
            line-height: 1;
            padding: 0.72rem 1.25rem;
            transition: background-color 200ms ease, color 200ms ease, border-color 200ms ease, transform 200ms ease, box-shadow 200ms ease;
        }

        .btn-primary {
            background: var(--brand-500);
            color: #fff;
            box-shadow: 0 6px 16px -10px rgba(12, 108, 89, 0.55);
        }

        .btn-primary:hover {
            background: var(--brand-700);
            transform: translateY(-1px);
            box-shadow: 0 12px 24px -14px rgba(12, 108, 89, 0.55);
        }

        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(0.95);
            box-shadow: 0 4px 12px -8px rgba(12, 108, 89, 0.5);
        }

        .btn-secondary {
            background: #fff;
            border: 1px solid var(--line);
            color: var(--ink);
        }

        .btn-secondary:hover {
            border-color: var(--brand-500);
            color: var(--brand-500);
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(12, 108, 89, 0.25);
            color: var(--brand-700);
        }

        .btn-ghost:hover {
            background: rgba(12, 108, 89, 0.08);
            border-color: var(--brand-500);
            transform: translateY(-1px);
        }

        .btn-ghost:active {
            transform: translateY(0);
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            border-radius: 999px;
            padding: 0.35rem 0.8rem;
            font-size: 0.8rem;
            font-weight: 500;
            color: #52584f;
            background: rgba(29, 36, 31, 0.05);
            border: 1px solid rgba(29, 36, 31, 0.04);
        }

        .tag-chip.brand {
            color: var(--brand-700);
            background: rgba(12, 108, 89, 0.08);
            border-color: transparent;
        }

        .card-surface {
            background: #fff;
            border: 1px solid rgba(226, 223, 212, 0.8);
            border-radius: 1.25rem;
            box-shadow: var(--card-shadow);
        }

        .card-hover {
            transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
        }

        .card-hover:hover {
            transform: translateY(-2px);
            box-shadow: var(--card-shadow-hover);
            border-color: rgba(12, 108, 89, 0.28);
        }

        .kbd {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            background: rgba(29, 36, 31, 0.055);
            padding: 0.2rem 0.45rem;
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            font-size: 0.7rem;
            line-height: 1.2;
            color: var(--muted);
            border: 1px solid rgba(29, 36, 31, 0.06);
            box-shadow: 0 1px 0 rgba(29, 36, 31, 0.04);
        }

        .command-layer {
            position: fixed;
            inset: 0;
            z-index: 80;
            display: flex;
            justify-content: center;
            align-items: flex-start;
            padding: 4rem 1rem 2rem;
        }

        .command-backdrop {
            position: absolute;
            inset: 0;
            background: rgba(7, 26, 22, 0.48);
            width: 100%;
            height: 100%;
            border: 0;
            cursor: default;
            backdrop-filter: blur(3px);
        }

        .command-dialog {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 580px;
            border-radius: 1.1rem;
            background: #fff;
            border: 1px solid rgba(29, 36, 31, 0.06);
            box-shadow: 0 30px 80px -30px rgba(7, 56, 47, 0.35);
            overflow: hidden;
        }

        .command-input {
            width: 100%;
            border: 0;
            background: transparent;
            font-size: 0.95rem;
            outline: none;
            color: var(--ink);
        }

        .command-input::placeholder {
            color: #999d96;
        }

        .code-block {
            font-family: ui-monospace, SFMono-Regular, Consolas, 'Liberation Mono', monospace;
            font-size: 0.84rem;
            line-height: 1.75;
            background: rgba(7, 56, 47, 0.96);
            color: #e6f4ef;
            border-radius: 1rem;
            padding: 1rem 1.25rem;
            overflow-x: auto;
            white-space: pre;
        }

        .faq-item {
            border-bottom: 1px solid var(--line);
        }

        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.5rem 0;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: #20251f;
            transition: color 160ms ease;
        }

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

        .faq-item summary:hover {
            color: var(--brand-500);
        }

        .faq-item[open] summary {
            color: var(--brand-700);
        }

        .faq-icon {
            position: relative;
            flex: 0 0 auto;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid rgba(12, 108, 89, 0.28);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: transform 200ms ease, background-color 200ms ease, border-color 200ms ease;
        }

        .faq-icon span {
            position: absolute;
            display: block;
            border-radius: 2px;
            background: var(--brand-500);
            transition: opacity 200ms ease, transform 200ms ease;
        }

        .faq-icon-h {
            width: 11px;
            height: 1.5px;
        }

        .faq-icon-v {
            height: 11px;
            width: 1.5px;
        }

        .faq-item[open] .faq-icon {
            transform: rotate(135deg);
            background: rgba(12, 108, 89, 0.08);
            border-color: rgba(12, 108, 89, 0.35);
        }

        .faq-answer {
            padding: 0 0 1.6rem;
            max-width: 68ch;
            color: #4b554d;
            font-size: 0.96rem;
            line-height: 1.9;
        }

        .section-step-number {
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            font-weight: 600;
            font-variant-numeric: tabular-nums;
            color: var(--brand-500);
            letter-spacing: 0.02em;
        }

        .section-rule {
            border-color: rgba(7, 56, 47, 0.1);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 1rem;
        }

        @media (min-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(4, minmax(0, 1fr));
            }
        }

        .mobile-menu-panel {
            position: absolute;
            left: 0;
            right: 0;
            top: 100%;
            z-index: 55;
            background: #fff;
            border-bottom: 1px solid rgba(7, 56, 47, 0.1);
            box-shadow: 0 16px 32px -24px rgba(7, 56, 47, 0.25);
        }

        @media (max-width: 1023.98px) {
            .nav-scrollable {
                display: flex;
                flex-direction: column;
                gap: 0.25rem;
            }
            .nav-scrollable .nav-link {
                justify-content: flex-start;
                padding: 0.85rem 0.9rem;
            }
        }

/* roulang page: category3 */
:root {
            --brand-50: #edf6f3;
            --brand-100: #daeee7;
            --brand-500: #0c6c59;
            --brand-700: #094c40;
            --brand-900: #07382f;
            --accent: #de7c44;
            --cream: #f5f3ed;
            --ink: #1d241f;
            --muted: #6b6f67;
            --line: #e2dfd4;
            --surface: #ffffff;
            --radius-card: 1rem;
            --radius-panel: 1.5rem;
            --shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.04), 0 12px 30px -20px rgba(0, 0, 0, 0.2);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

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

        ::selection {
            background: rgba(12, 108, 89, 0.18);
            color: var(--brand-900);
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: 0;
            background: none;
            padding: 0;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        h1,
        h2,
        h3 {
            line-height: 1.35;
            margin: 0;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
        }

        :focus-visible {
            outline: 2px solid rgba(12, 108, 89, 0.65);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .container-page {
            width: 100%;
            margin-left: auto;
            margin-right: auto;
            max-width: 1280px;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 768px) {
            .container-page {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        .reading-column {
            max-width: 880px;
            margin-left: auto;
            margin-right: auto;
        }

        .site-header {
            background: rgba(255, 255, 255, 0.86);
            border-bottom: 1px solid rgba(226, 223, 212, 0.8);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
        }

        .site-header .container-page {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
        }

        @media (max-width: 640px) {
            .site-header .container-page {
                height: 64px;
                gap: 10px;
            }
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            flex-shrink: 0;
        }

        .brand-logo__mark {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: var(--brand-500);
            color: #fff;
            flex-shrink: 0;
        }

        .brand-logo__name {
            font-size: 21px;
            font-weight: 750;
            letter-spacing: -0.02em;
            color: var(--ink);
            white-space: nowrap;
        }

        @media (max-width: 420px) {
            .brand-logo__name {
                font-size: 19px;
            }
        }

        .nav-link {
            position: relative;
            font-size: 14.5px;
            font-weight: 500;
            border-radius: 999px;
            padding: 8px 14px;
            color: #4a4f49;
            transition: color 0.2s ease, background-color 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--brand-700);
            background: rgba(12, 108, 89, 0.06);
        }

        .nav-link[aria-current="page"] {
            background: rgba(12, 108, 89, 0.09);
            color: var(--brand-700);
            font-weight: 650;
        }

        .nav-link:focus-visible,
        .header-icon-btn:focus-visible {
            outline: 2px solid rgba(12, 108, 89, 0.5);
            outline-offset: 2px;
        }

        .header-icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 999px;
            background: #f1efe8;
            color: var(--ink);
            transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
            flex-shrink: 0;
        }

        .header-icon-btn:hover {
            background: #e7e4da;
            color: var(--brand-700);
        }

        .header-icon-btn:active {
            transform: translateY(1px);
        }

        .search-launcher {
            width: 100%;
            height: 40px;
            display: flex;
            align-items: center;
            gap: 9px;
            border-radius: 999px;
            background: #f1efe8;
            padding: 0 8px 0 14px;
            color: #767a72;
            border: 1px solid transparent;
            transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
            font-size: 13.5px;
        }

        .search-launcher:hover {
            background: #ece9e0;
            border-color: rgba(12, 108, 89, 0.2);
        }

        .search-launcher:active {
            transform: translateY(1px);
        }

        .kbd {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 24px;
            min-width: 28px;
            padding: 0 7px;
            margin-left: auto;
            border-radius: 7px;
            background: #fff;
            border: 1px solid #e2dfd4;
            box-shadow: 0 1px 0 rgba(0, 0, 0, 0.03);
            color: #989b92;
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            font-size: 11.5px;
            line-height: 1;
            white-space: nowrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            padding: 10px 20px;
            font-size: 14.5px;
            font-weight: 650;
            line-height: 1.2;
            border: 1px solid transparent;
            transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
            white-space: nowrap;
        }

        .btn svg {
            width: 17px;
            height: 17px;
        }

        .btn-primary {
            background: var(--brand-500);
            color: #fff;
            box-shadow: 0 6px 18px -8px rgba(12, 108, 89, 0.5);
        }

        .btn-primary:hover {
            background: var(--brand-700);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 10px 22px -10px rgba(12, 108, 89, 0.55);
        }

        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(0.96);
        }

        .btn-secondary {
            background: #fff;
            border-color: #dedbd0;
            color: var(--ink);
        }

        .btn-secondary:hover {
            border-color: rgba(12, 108, 89, 0.52);
            color: var(--brand-700);
            transform: translateY(-1px);
            box-shadow: 0 10px 22px -14px rgba(0, 0, 0, 0.28);
        }

        .btn-sm {
            padding: 8px 17px;
            font-size: 13.5px;
        }

        .btn-lg {
            padding: 14px 27px;
            font-size: 16px;
            border-radius: 999px;
        }

        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            border-radius: 999px;
            padding: 5px 13px;
            font-size: 12.5px;
            font-weight: 600;
            color: var(--brand-700);
            background: rgba(12, 108, 89, 0.1);
            letter-spacing: 0.01em;
        }

        .category-badge .dot {
            width: 6px;
            height: 6px;
            border-radius: 999px;
            background: var(--brand-500);
        }

        .hero-title {
            font-size: clamp(34px, 4.5vw, 56px);
            line-height: 1.12;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--ink);
            text-wrap: balance;
        }

        .hero-lead {
            margin-top: 18px;
            font-size: 17px;
            line-height: 1.9;
            color: #545950;
            max-width: 660px;
        }

        .section-kicker {
            display: flex;
            align-items: center;
            gap: 9px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--brand-700);
            text-transform: uppercase;
        }

        .section-kicker::before {
            content: "";
            width: 4px;
            height: 18px;
            border-radius: 999px;
            background: var(--brand-500);
        }

        .toc-ui {
            display: grid;
            grid-template-columns: repeat(1, minmax(0, 1fr));
            gap: 12px;
        }

        @media (min-width: 640px) {
            .toc-ui {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }
        }

        .toc-card {
            display: flex;
            align-items: center;
            gap: 12px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 18px;
            padding: 14px 15px;
            color: var(--ink);
            box-shadow: 0 1px 1px rgba(0, 0, 0, 0.02);
            transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
        }

        .toc-card:hover {
            border-color: rgba(12, 108, 89, 0.4);
            box-shadow: var(--shadow-soft);
            transform: translateY(-2px);
        }

        .toc-card__index {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 999px;
            background: rgba(12, 108, 89, 0.08);
            color: var(--brand-700);
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .toc-card__text {
            flex: 1;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
        }

        .toc-card svg {
            width: 16px;
            height: 16px;
            color: #999c93;
            transition: transform 0.2s ease, color 0.2s ease;
            flex-shrink: 0;
        }

        .toc-card:hover svg {
            transform: translateX(3px);
            color: var(--brand-500);
        }

        .doc-section {
            padding: 46px 0 10px;
            scroll-margin-top: 90px;
        }

        .doc-section__number {
            color: var(--brand-500);
            font-size: 13px;
            font-weight: 750;
            letter-spacing: 0.12em;
            display: inline-block;
            border: 1px solid rgba(12, 108, 89, 0.28);
            border-radius: 999px;
            padding: 2px 12px;
            background: rgba(12, 108, 89, 0.03);
        }

        .doc-section h2 {
            margin-top: 15px;
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 760;
            letter-spacing: -0.015em;
            color: var(--ink);
        }

        .doc-section__lead {
            margin-top: 12px;
            font-size: 16.5px;
            color: #50554d;
            line-height: 1.9;
        }

        .surface-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 22px;
            padding: 22px;
            box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02), 0 16px 34px -28px rgba(0, 0, 0, 0.2);
        }

        .surface-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
        }

        .plain-list {
            display: grid;
            gap: 12px;
            list-style: none;
        }

        .plain-list li {
            position: relative;
            padding-left: 20px;
            font-size: 15px;
            line-height: 1.8;
            color: #4a5048;
        }

        .plain-list li::before {
            content: "";
            position: absolute;
            left: 2px;
            top: 12px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--brand-500);
            opacity: 0.8;
        }

        .plain-list strong {
            color: #242a24;
            font-weight: 700;
        }

        .flow-list {
            display: grid;
            gap: 14px;
            margin-top: 22px;
        }

        @media (min-width: 640px) {
            .flow-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .flow-step {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 18px;
            padding: 18px;
            box-shadow: 0 1px 1px rgba(0, 0, 0, 0.02);
            transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
        }

        .flow-step:hover {
            border-color: rgba(12, 108, 89, 0.3);
            transform: translateY(-2px);
            box-shadow: var(--shadow-soft);
        }

        .flow-step__num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            border-radius: 999px;
            background: var(--brand-500);
            color: #fff;
            font-size: 13px;
            font-weight: 750;
            margin-bottom: 12px;
        }

        .flow-step h3 {
            font-size: 15.5px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .flow-step p {
            font-size: 14.5px;
            line-height: 1.8;
            color: #585d54;
            margin: 0;
        }

        .callout-note {
            border: 1px solid #dfdACd;
            background: #fbfaf6;
            border-left: 4px solid var(--accent);
            border-radius: 14px;
            padding: 15px 18px;
            font-size: 15px;
            color: #4f544d;
            line-height: 1.8;
        }

        .callout-note strong {
            color: var(--ink);
        }

        .content-grid {
            display: grid;
            gap: 18px;
        }

        .content-index-row {
            display: flex;
            gap: 15px;
            padding: 16px 0;
            border-bottom: 1px solid var(--line);
        }

        .content-index-row:last-child {
            border-bottom: 0;
        }

        .content-index-row__icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: rgba(12, 108, 89, 0.08);
            color: var(--brand-700);
            flex-shrink: 0;
        }

        .content-index-row__icon svg {
            width: 20px;
            height: 20px;
        }

        .content-index-row h3 {
            font-size: 15.5px;
            font-weight: 700;
            margin: 2px 0 4px;
        }

        .content-index-row p {
            margin: 0;
            font-size: 14.5px;
            line-height: 1.75;
            color: #5b6057;
        }

        .table-wrap {
            overflow-x: auto;
            border: 1px solid var(--line);
            border-radius: 16px;
            background: #fff;
        }

        .simple-table {
            width: 100%;
            min-width: 560px;
            border-collapse: collapse;
            font-size: 14px;
            line-height: 1.7;
        }

        .simple-table th {
            background: #f3f1ea;
            color: #43483f;
            text-align: left;
            padding: 12px 15px;
            font-weight: 700;
            border-bottom: 1px solid var(--line);
            white-space: nowrap;
        }

        .simple-table td {
            padding: 12px 15px;
            border-bottom: 1px solid #ece9e0;
            color: #4c5149;
        }

        .simple-table tr:last-child td {
            border-bottom: 0;
        }

        .faq-item {
            border-bottom: 1px solid #e4e0d5;
            padding: 6px 0;
        }

        .faq-item:first-child {
            border-top: 1px solid #e4e0d5;
        }

        .faq-toggle {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            text-align: left;
            padding: 18px 2px;
            font-size: 16px;
            color: var(--ink);
            border-radius: 12px;
            transition: color 0.2s ease;
        }

        .faq-toggle:hover {
            color: var(--brand-700);
        }

        .faq-question {
            font-weight: 650;
            line-height: 1.55;
        }

        .faq-icon {
            width: 26px;
            height: 26px;
            border-radius: 999px;
            background: rgba(12, 108, 89, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            font-weight: 300;
            color: var(--brand-700);
            flex-shrink: 0;
            transition: transform 0.3s ease, background 0.3s ease;
            line-height: 1;
        }

        .faq-item.is-open .faq-icon {
            transform: rotate(45deg);
            background: var(--brand-500);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, opacity 0.3s ease;
            opacity: 0;
        }

        .faq-item.is-open .faq-answer {
            opacity: 1;
        }

        .faq-answer p {
            color: #5a5f56;
            font-size: 14.5px;
            line-height: 1.85;
            margin: 0 42px 22px 2px;
        }

        .cta-ribbon {
            background: radial-gradient(circle at 85% 15%, rgba(23, 143, 117, 0.3), transparent 35%), var(--brand-900);
            border-radius: 28px;
            color: #fff;
            padding: 38px 22px 40px;
            box-shadow: 0 30px 66px -38px rgba(7, 56, 47, 0.7);
            position: relative;
            overflow: hidden;
        }

        @media (min-width: 768px) {
            .cta-ribbon {
                padding: 62px 54px;
            }
        }

        .cta-ribbon h2 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 760;
            letter-spacing: -0.02em;
            color: #fff;
        }

        .cta-ribbon p {
            color: rgba(255, 255, 255, 0.72);
            font-size: 15px;
            line-height: 1.85;
        }

        .subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        @media (min-width: 640px) {
            .subscribe-form {
                flex-direction: row;
            }
        }

        .subscribe-form input[type="email"] {
            flex: 1;
            min-width: 0;
            height: 48px;
            border-radius: 999px;
            border: 0;
            background: #fff;
            padding: 0 20px;
            font-size: 15px;
            color: var(--ink);
            box-shadow: 0 0 0 0 rgba(255, 255, 255, 0);
            transition: box-shadow 0.2s ease, transform 0.2s ease;
        }

        .subscribe-form input[type="email"]:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(93, 190, 163, 0.34);
        }

        .footer {
            background: var(--brand-900);
            color: #fff;
        }

        .footer a {
            transition: color 0.2s ease;
        }

        .footer a:hover {
            color: rgba(255, 255, 255, 0.96);
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 7px;
            font-size: 13px;
            color: #7a7e75;
        }

        .breadcrumb a {
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--brand-700);
        }

        .breadcrumb .sep {
            color: #c2bfb4;
        }

        .hero-media {
            border-radius: 26px;
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            position: relative;
            background: #dfe4d9;
        }

        .hero-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 56, 47, 0.08) 0%, rgba(7, 56, 47, 0.05) 50%, rgba(7, 56, 47, 0.42) 100%);
            pointer-events: none;
        }

        .hero-media__caption {
            position: absolute;
            left: 20px;
            bottom: 18px;
            z-index: 2;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(7, 56, 47, 0.72);
            color: #fff;
            border-radius: 999px;
            padding: 7px 13px;
            font-size: 12px;
            backdrop-filter: blur(4px);
            border: 1px solid rgba(255, 255, 255, 0.18);
        }

        .mobile-panel {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            z-index: 45;
            background: #fff;
            border-bottom: 1px solid var(--line);
            padding: 20px 16px 26px;
            transform: translateY(-16px);
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
            box-shadow: 0 28px 40px -32px rgba(0, 0, 0, 0.3);
            border-radius: 0 0 20px 20px;
        }

        @media (max-width: 640px) {
            .mobile-panel {
                top: 58px;
            }
        }

        .mobile-panel.is-open {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }

        .mobile-nav-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            width: 100%;
            padding: 13px 14px;
            border-radius: 14px;
            font-size: 16px;
            font-weight: 600;
            color: #373c36;
            transition: background 0.2s ease, color 0.2s ease;
        }

        .mobile-nav-link:hover {
            background: var(--cream);
            color: var(--brand-700);
        }

        .mobile-nav-link[aria-current="page"] {
            background: rgba(12, 108, 89, 0.1);
            color: var(--brand-700);
        }

        .cmd-modal {
            position: fixed;
            inset: 0;
            z-index: 90;
            display: flex;
            justify-content: center;
            align-items: flex-start;
            padding: 12vh 20px 24px;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.22s ease, visibility 0.22s ease;
        }

        .cmd-modal.is-open {
            opacity: 1;
            visibility: visible;
        }

        .cmd-backdrop {
            position: absolute;
            inset: 0;
            background: rgba(10, 20, 16, 0.44);
            backdrop-filter: blur(2px);
        }

        .cmd-panel {
            position: relative;
            width: min(660px, 100%);
            max-height: 70vh;
            background: #fff;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 40px 90px -40px rgba(0, 0, 0, 0.45);
            transform: translateY(10px) scale(0.99);
            transition: transform 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .cmd-modal.is-open .cmd-panel {
            transform: translateY(0) scale(1);
        }

        .cmd-search-row {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 18px;
            border-bottom: 1px solid var(--line);
        }

        .cmd-search-icon {
            color: var(--brand-500);
            flex-shrink: 0;
        }

        .cmd-search-row input {
            flex: 1;
            min-width: 0;
            height: 34px;
            border: 0;
            font-size: 16px;
            color: var(--ink);
        }

        .cmd-search-row input:focus-visible {
            outline: none;
        }

        .cmd-search-row kbd {
            border: 1px solid var(--line);
            background: #fff;
            border-radius: 6px;
            padding: 2px 7px;
            font-family: ui-monospace, monospace;
            font-size: 11px;
            color: #8b8f87;
        }

        .cmd-body {
            overflow-y: auto;
            padding: 12px;
        }

        .cmd-group-title {
            padding: 8px 10px 6px;
            font-size: 12px;
            font-weight: 650;
            letter-spacing: 0.06em;
            color: #9a9d94;
        }

        .cmd-list {
            list-style: none;
            display: grid;
            gap: 4px;
        }

        .cmd-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 11px 12px;
            border-radius: 13px;
            color: var(--ink);
            font-size: 14.5px;
            font-weight: 550;
            transition: background 0.16s ease;
            line-height: 1.4;
        }

        .cmd-list a:hover,
        .cmd-list a.is-highlight {
            background: rgba(12, 108, 89, 0.08);
        }

        .cmd-list a .cmd-icon {
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(12, 108, 89, 0.09);
            color: var(--brand-700);
            flex-shrink: 0;
        }

        .cmd-list a .cmd-arrow {
            margin-left: auto;
            color: #a6aaa0;
        }

        .cmd-empty {
            display: none;
            text-align: center;
            padding: 28px 16px 22px;
            color: #73776e;
            font-size: 14px;
        }

        .cmd-empty.is-visible {
            display: block;
        }

        .back-to-top {
            position: fixed;
            right: 22px;
            bottom: 24px;
            z-index: 46;
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.92);
            border: 1px solid #ddd9ce;
            color: var(--brand-700);
            box-shadow: 0 14px 34px -16px rgba(0, 0, 0, 0.32);
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease, background 0.2s ease, color 0.2s ease;
        }

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

        .back-to-top:hover {
            background: var(--brand-700);
            color: #fff;
        }