:root {
            --bg-page: #f3f4f6;
            --bg-header: #ffffff;
            --bg-card: #ffffff;
            --text-main: #111827;
            --text-muted: #6b7280;
            --accent: #16a34a;
            --border: #e5e7eb;
            --radius-lg: 12px;
            --radius-md: 8px;
            --max-width: 1100px;
        }

        * { box-sizing: border-box; }

        html, body {
            margin: 0;
            padding: 0;
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            background: var(--bg-page);
            color: var(--text-main);
        }

        a {
            color: #2563eb;
            text-decoration: none;
        }

        a:hover {
            text-decoration: underline;
        }

        body {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        header {
            background: var(--bg-header);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 10px 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo-circle {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: #16a34a;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-weight: 700;
            font-size: 14px;
        }

        .logo-text-main {
            font-weight: 600;
            font-size: 14px;
        }

        .logo-text-sub {
            font-size: 11px;
            color: var(--text-muted);
        }

        nav {
            display: flex;
            gap: 14px;
            font-size: 13px;
        }

        nav a {
            color: var(--text-muted);
        }

        nav a:hover {
            color: var(--accent);
            text-decoration: none;
        }

        .header-cta {
            display: flex;
            gap: 8px;
        }

        .btn {
            border-radius: 999px;
            border: 1px solid var(--border);
            padding: 7px 14px;
            font-size: 13px;
            cursor: pointer;
            background: #ffffff;
            color: var(--text-main);
        }

        .btn-primary {
            background: var(--accent);
            border-color: var(--accent);
            color: #ffffff;
        }

        .btn-primary:hover {
            opacity: 0.9;
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        .menu-toggle {
            display: none;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: #ffffff;
            width: 32px;
            height: 32px;
            text-align: center;
            cursor: pointer;
        }

        main {
            flex: 1;
        }

        .page {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 16px;
        }

        .hero {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 16px;
        }

        .breadcrumbs {
            font-size: 12px;
            color: var(--text-muted);
        }

        .breadcrumbs span {
            color: var(--accent);
        }

        h1 {
            font-size: 24px;
            margin: 4px 0 6px;
        }

        .hero-sub {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 520px;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 11px;
        }

        .pill {
            border-radius: 999px;
            padding: 4px 8px;
            border: 1px solid var(--border);
            background: #ffffff;
            color: var(--text-muted);
        }

        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 8px;
        }

        .hero-meta {
            font-size: 11px;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 6px;
        }

        .content-grid {
            display: grid;
            grid-template-columns: minmax(0, 2.2fr) minmax(240px, 1fr);
            gap: 16px;
        }

        .content {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 14px;
        }

        h2 {
            font-size: 18px;
            margin: 18px 0 8px;
        }

        h3 {
            font-size: 15px;
            margin: 14px 0 6px;
        }

        p {
            font-size: 14px;
            line-height: 1.5;
            margin: 4px 0;
        }

        p .key {
            color: #0f766e;
        }

        ul, ol {
            padding-left: 18px;
            margin: 4px 0;
            font-size: 14px;
        }

        li {
            margin: 3px 0;
        }

        .info-card {
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            background: #f9fafb;
            padding: 10px;
            margin: 10px 0;
        }

        .info-card-strong {
            background: #ecfdf3;
            border-color: #bbf7d0;
        }

        .info-title {
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 4px;
        }

        .table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            background: #ffffff;
            margin: 10px 0;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            min-width: 520px;
            font-size: 13px;
        }

        th, td {
            padding: 8px;
            border-bottom: 1px solid var(--border);
            text-align: left;
        }

        th {
            background: #f9fafb;
            font-weight: 600;
            color: var(--text-muted);
        }

        .faq {
            margin-top: 18px;
        }

        details {
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            background: #f9fafb;
            padding: 8px 10px;
            margin: 6px 0;
        }

        summary {
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
        }

        .faq-body {
            margin-top: 6px;
            font-size: 13px;
        }

        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 10px;
            font-size: 13px;
        }

        .sidebar-title {
            font-weight: 600;
            margin-bottom: 6px;
        }

        .anchor-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

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

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

        .chip-list {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .chip {
            font-size: 11px;
            padding: 4px 8px;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: #f9fafb;
            color: var(--text-muted);
        }

        .back-to-top {
            position: fixed;
            right: 16px;
            bottom: 16px;
            display: none;
        }

        .back-to-top.visible {
            display: inline-block;
        }

        footer {
            border-top: 1px solid var(--border);
            background: #ffffff;
        }

        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 12px 16px;
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        @media (max-width: 900px) {
            nav {
                position: absolute;
                left: 0;
                right: 0;
                top: 52px;
                background: #ffffff;
                border-bottom: 1px solid var(--border);
                padding: 8px 16px;
                flex-direction: column;
                gap: 8px;
                display: none;
            }

            nav.open {
                display: flex;
            }

            .menu-toggle {
                display: block;
            }

            .header-cta {
                display: none;
            }

            .content-grid {
                grid-template-columns: minmax(0, 1fr);
            }

            table {
                min-width: 460px;
            }
        }

        @media (max-width: 600px) {
            h1 {
                font-size: 20px;
            }

            .hero-sub {
                font-size: 13px;
            }
        }