:root {
            --c-ink: #0F0F12;
            --c-ink2: #3D3D42;
            --c-ink3: #82828C;
            --c-line: #E9E9ED;
            --c-white: #FFFFFF;
            --c-bg: #F9F9FC;
            --c-primary: #1B4FD8;
            --c-primary2: #EEF2FF;
            --r-lg: 20px;
            --sh-sm: 0 1px 3px rgba(15,15,18,0.08), 0 0 0 0.5px rgba(15,15,18,0.04);
            --sh-md: 0 4px 12px rgba(15,15,18,0.12), 0 0 0 0.5px rgba(15,15,18,0.06);
            --font: 'IBM Plex Sans Arabic', sans-serif;
        }

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

        body {
            font-family: var(--font);
            background: linear-gradient(135deg, #F0F2F7 0%, #E8EAEF 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            color: var(--c-ink2);
        }

        header {
            background: var(--c-white);
            border-bottom: 1px solid var(--c-line);
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 10;
            box-shadow: var(--sh-sm);
        }

        .header-content {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            font-size: 28px;
            font-weight: 900;
            color: var(--c-primary);
            text-decoration: none;
            letter-spacing: -0.5px;
        }

        nav a {
            color: var(--c-ink3);
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            margin-right: 32px;
            transition: color 0.2s;
        }

        nav a:hover {
            color: var(--c-primary);
        }

        main {
            flex: 1;
            display: flex;
            justify-content: center;
            padding: 48px 24px;
        }

        .content-card {
            background: var(--c-white);
            border-radius: var(--r-lg);
            box-shadow: var(--sh-md);
            max-width: 800px;
            width: 100%;
            padding: 48px 40px;
        }

        .title {
            font-size: 32px;
            font-weight: 900;
            color: var(--c-ink);
            text-align: center;
            margin-bottom: 8px;
            letter-spacing: -0.5px;
        }

        .subtitle {
            text-align: center;
            font-size: 14px;
            color: var(--c-ink3);
            margin-bottom: 40px;
        }

        section {
            margin-bottom: 32px;
        }

        section h2 {
            font-size: 20px;
            font-weight: 800;
            color: var(--c-ink);
            margin-bottom: 12px;
            position: relative;
            padding-right: 20px;
        }

        section h2::before {
            content: '';
            position: absolute;
            right: 0;
            top: 5px;
            height: 20px;
            width: 4px;
            background: var(--c-primary);
            border-radius: 4px;
        }

        section p, section li {
            font-size: 16px;
            line-height: 1.8;
            color: var(--c-ink2);
        }

        section ul {
            list-style: disc;
            padding-right: 24px;
            margin-top: 8px;
        }

        section a {
            color: var(--c-primary);
            font-weight: 600;
            text-decoration: none;
        }

        footer {
            background: var(--c-white);
            border-top: 1px solid var(--c-line);
            text-align: center;
            padding: 24px;
            font-size: 14px;
            color: var(--c-ink3);
        }

        @media (max-width: 600px) {
            .content-card {
                padding: 32px 24px;
            }
        }
        nav a.active {
            color: var(--c-primary);
            position: relative;
        }
        nav a.active::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--c-primary);
            border-radius: 2px;
        }