:root {
            --clr-primary: #2d6a4f;
            --clr-primary-lighter: #52b788;
            --clr-primary-pale: #b7e4c7;
            --clr-primary-bg: #d8f3dc;
            --clr-accent: #1b4332;
            --clr-bg: #f0faf4;
            --clr-white: #ffffff;
            --clr-text: #1b1b1b;
            --clr-text-muted: #555;
            --clr-text-light: #777;
            --clr-border: #c8e6d0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
            --transition: 0.3s cubic-bezier(.4, 0, .2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -webkit-tap-highlight-color: transparent;
        }

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

        a:hover {
            text-decoration: underline;
        }

        .navbar {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--clr-border);
            padding: 0 2rem;
        }

        .navbar-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--clr-primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            text-decoration: none;
        }

        .logo svg {
            width: 30px;
            height: 30px;
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .nav-links a {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--clr-text-muted);
            text-decoration: none;
        }

        .nav-links a:hover {
            color: var(--clr-primary);
            text-decoration: none;
        }

        .nav-links a.active {
            color: var(--clr-primary);
            font-weight: 700;
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--clr-primary);
            cursor: pointer;
            min-height: 44px;
            min-width: 44px;
        }

        .article-header {
            background: linear-gradient(160deg, var(--clr-accent) 0%, var(--clr-primary) 50%, var(--clr-primary-lighter) 100%);
            color: var(--clr-white);
            padding: 4rem 2rem 3.5rem;
            text-align: center;
        }

        .article-header .breadcrumb {
            font-size: 0.85rem;
            opacity: 0.75;
            margin-bottom: 1rem;
        }

        .article-header .breadcrumb a {
            color: var(--clr-primary-pale);
            text-decoration: none;
        }

        .article-header h1 {
            font-size: clamp(1.6rem, 4vw, 2.4rem);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 1rem;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .article-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            font-size: 0.85rem;
            opacity: 0.8;
            flex-wrap: wrap;
        }

        .article-body {
            max-width: 760px;
            margin: 0 auto;
            padding: 3rem 2rem 4rem;
        }

        .article-body h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--clr-accent);
            margin: 2.5rem 0 1rem;
        }

        .article-body p {
            margin-bottom: 1.25rem;
            font-size: 1.02rem;
        }

        .article-body ul,
        .article-body ol {
            margin: 0.75rem 0 1.5rem 1.5rem;
        }

        .article-body li {
            margin-bottom: 0.5rem;
            font-size: 0.98rem;
        }

        .highlight-box {
            background: var(--clr-primary-bg);
            border-left: 4px solid var(--clr-primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            padding: 1.25rem 1.5rem;
            margin: 2rem 0;
            font-size: 0.95rem;
        }

        .highlight-box strong {
            color: var(--clr-primary);
        }

        /* Ranking cards */
        .rank-card {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            background: var(--clr-white);
            border-radius: var(--radius-sm);
            padding: 1.25rem 1.5rem;
            margin-bottom: 1rem;
            border: 1px solid var(--clr-border);
            transition: transform var(--transition);
        }

        .rank-card:hover {
            transform: translateX(4px);
        }

        .rank-num {
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .rank-1 .rank-num {
            background: #ffd700;
            color: #5a4800;
        }

        .rank-2 .rank-num {
            background: #c0c0c0;
            color: #333;
        }

        .rank-3 .rank-num {
            background: #cd7f32;
            color: #fff;
        }

        .rank-4 .rank-num,
        .rank-5 .rank-num,
        .rank-6 .rank-num {
            background: var(--clr-primary-bg);
            color: var(--clr-primary);
        }

        .rank-info {
            flex: 1;
        }

        .rank-info h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--clr-accent);
            margin-bottom: 0.15rem;
        }

        .rank-info p {
            font-size: 0.88rem;
            color: var(--clr-text-muted);
            margin: 0;
        }

        .rank-value {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--clr-primary);
            white-space: nowrap;
        }

        .post-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-sm);
            border: 1px solid var(--clr-border);
            margin: 1.5rem 0 2rem;
        }

        .post-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 360px;
        }

        .post-table th,
        .post-table td {
            padding: 0.75rem 1rem;
            text-align: center;
            font-size: 0.9rem;
        }

        .post-table thead th {
            background: var(--clr-primary);
            color: var(--clr-white);
            font-weight: 600;
            font-size: 0.8rem;
            text-transform: uppercase;
        }

        .post-table thead th:first-child {
            text-align: left;
        }

        .post-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--clr-accent);
        }

        .post-table tbody tr {
            border-bottom: 1px solid var(--clr-border);
        }

        .cta-box {
            background: var(--clr-white);
            border: 2px solid var(--clr-primary-pale);
            border-radius: var(--radius);
            padding: 2rem;
            text-align: center;
            margin: 2.5rem 0;
        }

        .cta-box h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--clr-accent);
            margin-bottom: 0.5rem;
        }

        .cta-box p {
            color: var(--clr-text-muted);
            font-size: 0.92rem;
            margin-bottom: 1.25rem;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-lighter));
            color: var(--clr-white);
            padding: 0.75rem 1.75rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            text-decoration: none;
            transition: transform var(--transition);
        }

        .cta-btn:hover {
            transform: translateY(-2px);
            text-decoration: none;
        }

        .footer {
            background: var(--clr-accent);
            color: rgba(255, 255, 255, 0.75);
            text-align: center;
            padding: 2.5rem 2rem;
            font-size: 0.88rem;
        }

        .footer strong {
            color: var(--clr-primary-pale);
        }

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

            .nav-links.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: var(--clr-white);
                padding: 1.5rem 2rem;
                gap: 1.25rem;
                border-bottom: 1px solid var(--clr-border);
            }

            .mobile-toggle {
                display: block;
            }

            .article-header {
                padding: 3rem 1.25rem 2.5rem;
            }

            .article-body {
                padding: 2rem 1.25rem 3rem;
            }

            .rank-card {
                gap: 0.75rem;
                padding: 1rem;
            }

            .rank-value {
                font-size: 1.1rem;
            }
        }