/* CSS Reset */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Georgia', 'Times New Roman', serif;
        }

        /* Variables */
        :root {
            --primary-color: #6d4c41;  /* Warm brown */
            --secondary-color: #8d6e63;  /* Lighter brown */
            --accent-color: #a1887f;  /* Soft taupe */
            --dark-color: #4e342e;  /* Dark brown */
            --light-color: #efebe9;  /* Off-white */
            --paper-color: #fff8e1;  /* Creamy paper color */
            --ink-color: #3e2723;  /* Deep brown for text */
            --highlight: #d7ccc8;  /* Soft highlight color */
            --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            --dotted-line: linear-gradient(90deg, currentColor 50%, transparent 50%) 0 100% repeat-x;
            --dotted-line-size: 2px 2px;
        }

        /* Base Styles */
        body {
            background-color: var(--light-color);
            color: var(--ink-color);
            line-height: 1.8;
            background-image: url('data:image/svg+xml;utf8,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><path d="M0 0 L100 0 L100 100 L0 100 Z" fill="none" stroke="%23d7ccc8" stroke-width="0.5" stroke-dasharray="5,5"/></svg>');
            background-size: 20px 20px;
            padding-bottom: 2rem;
        }

        header {
            background-color: var(--dark-color);
            color: var(--light-color);
            padding: 3rem 0 2rem;
            text-align: center;
            box-shadow: var(--shadow);
            border-bottom: 8px solid var(--primary-color);
            position: relative;
        }

        header::after {
            content: "";
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 150px;
            height: 30px;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 20"><path d="M0,10 Q25,20 50,10 T100,10" fill="none" stroke="%234e342e" stroke-width="2"/></svg>');
            background-repeat: no-repeat;
            background-size: contain;
        }

        nav {
            background-color: var(--primary-color);
            padding: 1rem;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0,0,0,0.2);
        }

        nav ul {
            display: flex;
            justify-content: center;
            list-style: none;
            flex-wrap: wrap;
        }

        nav a {
            color: var(--light-color);
            text-decoration: none;
            padding: 0.5rem 1.2rem;
            margin: 0 0.3rem;
            border-radius: 20px;
            transition: all 0.3s ease;
            font-size: 0.95rem;
            border: 1px dashed transparent;
        }

        nav a:hover {
            background-color: var(--secondary-color);
            border-color: var(--light-color);
        }

        .container {
            max-width: 900px;
            margin: 2rem auto;
            padding: 0 1.5rem;
        }

        section {
            background-color: var(--paper-color);
            border-radius: 2px;
            padding: 2.5rem;
            margin-bottom: 2.5rem;
            box-shadow: var(--shadow);
            transition: transform 0.3s ease;
            position: relative;
            border-left: 4px solid var(--primary-color);
            background-image: linear-gradient(var(--paper-color) 99%, transparent 99%),
                              linear-gradient(90deg, var(--highlight) 1px, transparent 1px);
            background-size: 100% 2rem, 100% 2rem;
            line-height: 2rem;
        }

        section::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 40px;
            height: 40px;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill="%23a1887f" d="M12,2C6.47,2,2,6.47,2,12s4.47,10,10,10s10-4.47,10-10S17.53,2,12,2z M12,20c-4.41,0-8-3.59-8-8s3.59-8,8-8s8,3.59,8,8S16.41,20,12,20z"/></svg>');
            background-repeat: no-repeat;
            opacity: 0.3;
        }

        section:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }

        h1, h2, h3 {
            margin-bottom: 1.5rem;
            font-weight: normal;
        }

        h1 {
            font-size: 2.8rem;
            letter-spacing: 1px;
            font-family: 'Palatino', serif;
        }

        h2 {
            color: var(--dark-color);
            font-size: 2rem;
            padding-bottom: 0.5rem;
            background: var(--dotted-line);
            background-size: var(--dotted-line-size);
            display: inline-block;
            font-family: 'Palatino', serif;
        }

        h3 {
            color: var(--primary-color);
            font-size: 1.5rem;
            margin-top: 2rem;
            margin-bottom: 1rem;
            position: relative;
            display: inline-block;
        }

        h3::after {
            content: "";
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--dotted-line);
            background-size: var(--dotted-line-size);
        }

        p {
            margin-bottom: 1.5rem;
        }

        .topic-header {
            display: flex;
            align-items: center;
            margin-bottom: 2rem;
            position: relative;
        }

        .topic-icon {
            font-size: 2.5rem;
            margin-right: 1.5rem;
            color: var(--primary-color);
            background-color: var(--light-color);
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }

        .example-box {
            background-color: var(--light-color);
            border-left: 4px solid var(--primary-color);
            padding: 1.5rem;
            margin: 1.5rem 0;
            position: relative;
            border-radius: 0 4px 4px 0;
        }

        .example-box::before {
            content: "EXAMPLE";
            position: absolute;
            top: -10px;
            left: 10px;
            background-color: var(--primary-color);
            color: white;
            padding: 2px 8px;
            font-size: 0.7rem;
            border-radius: 3px;
        }

        .reflection-box {
            background-color: rgba(233, 221, 213, 0.5);
            border-left: 4px solid var(--secondary-color);
            padding: 1.5rem;
            margin: 1.5rem 0;
            font-style: italic;
            position: relative;
            border-radius: 0 4px 4px 0;
        }

        .reflection-box::before {
            content: "REFLECTION";
            position: absolute;
            top: -10px;
            left: 10px;
            background-color: var(--secondary-color);
            color: white;
            padding: 2px 8px;
            font-size: 0.7rem;
            border-radius: 3px;
        }

        footer {
            background-color: var(--dark-color);
            color: var(--light-color);
            text-align: center;
            padding: 2rem;
            margin-top: 3rem;
            position: relative;
        }

        footer::before {
            content: "";
            position: absolute;
            top: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 150px;
            height: 30px;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 20"><path d="M0,10 Q25,0 50,10 T100,10" fill="none" stroke="%234e342e" stroke-width="2"/></svg>');
            background-repeat: no-repeat;
            background-size: contain;
        }

        .btn {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 0.6rem 1.5rem;
            border-radius: 20px;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px dashed transparent;
            font-size: 0.9rem;
        }

        .btn:hover {
            background-color: var(--secondary-color);
            transform: translateY(-2px);
            border-color: white;
        }

        ul, ol {
            margin-bottom: 1.5rem;
            padding-left: 2rem;
        }

        li {
            margin-bottom: 0.5rem;
            position: relative;
        }

        ul li::before {
            content: "•";
            color: var(--primary-color);
            position: absolute;
            left: -1rem;
        }

        /* Sticker styles */
        .sticker {
            position: absolute;
            width: 80px;
            height: 80px;
            background-size: contain;
            background-repeat: no-repeat;
            opacity: 0.8;
            z-index: 5;
        }

        .sticker-1 {
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="45" fill="%23f44336" stroke="%23d32f2f" stroke-width="2"/><text x="50" y="60" font-family="Arial" font-size="40" text-anchor="middle" fill="white">!</text></svg>');
            top: -20px;
            right: -20px;
            transform: rotate(15deg);
        }

        .sticker-2 {
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path d="M10,10 L90,10 L90,90 L10,90 Z" fill="%234CAF50" stroke="%232E7D32" stroke-width="2" transform="rotate(15 50 50)"/><text x="50" y="60" font-family="Arial" font-size="40" text-anchor="middle" fill="white">✓</text></svg>');
            bottom: -20px;
            left: -20px;
            transform: rotate(-10deg);
        }

        /* Bookmark ribbon */
        .ribbon {
            position: absolute;
            right: -5px;
            top: -5px;
            width: 40px;
            height: 60px;
            background-color: var(--accent-color);
            clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 80%, 0 100%);
            z-index: 1;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            nav ul {
                flex-direction: column;
                align-items: center;
            }

            nav a {
                margin: 0.3rem 0;
                display: block;
                width: 100%;
                text-align: center;
            }

            .container {
                padding: 0 1rem;
            }

            section {
                padding: 1.5rem;
            }

            h1 {
                font-size: 2rem;
            }
        }

        /* Animation */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        @keyframes float {
            0% { transform: translateY(0px) rotate(0deg); }
            50% { transform: translateY(-10px) rotate(2deg); }
            100% { transform: translateY(0px) rotate(0deg); }
        }

        section {
            animation: fadeIn 0.5s ease-out forwards;
        }

        section:nth-child(2) {
            animation-delay: 0.2s;
        }

        section:nth-child(3) {
            animation-delay: 0.4s;
        }

        section:nth-child(4) {
            animation-delay: 0.6s;
        }

        .sticker {
            animation: float 3s ease-in-out infinite;
        }

        /* Paper texture */
        section::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="1" stitchTiles="stitch"/><feColorMatrix type="matrix" values="1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0.02 0"/></filter><rect width="100" height="100" filter="url(%23noise)" opacity="0.3"/></svg>');
            opacity: 0.1;
            pointer-events: none;
            border-radius: inherit;
        }