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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f8f8;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        header {
            background: linear-gradient(135deg, #ee7451 0%, #d65a3e 100%);
            color: white;
            padding: 40px 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

        header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

        .logo {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.5px;
        }

        nav {
            background: white;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        nav ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            padding: 0;
            margin: 0;
        }

        nav li {
            margin: 0;
        }

        nav a {
            display: block;
            padding: 18px 24px;
            color: #333;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            border-bottom: 3px solid transparent;
        }

        nav a:hover {
            color: #ee7451;
            border-bottom-color: #ee7451;
            background-color: #fef5f3;
        }

        main {
            background: white;
            margin: 40px auto;
            max-width: 1200px;
            box-shadow: 0 0 30px rgba(0,0,0,0.08);
            border-radius: 8px;
            overflow: hidden;
        }

        .content-wrapper {
            padding: 50px;
        }

        h1 {
            font-size: 42px;
            color: #222;
            margin-bottom: 30px;
            line-height: 1.3;
            font-weight: 700;
            border-left: 6px solid #ee7451;
            padding-left: 20px;
        }

        article {
            margin-bottom: 50px;
        }

        article p {
            margin-bottom: 20px;
            font-size: 17px;
            color: #444;
        }

        article h2 {
            font-size: 32px;
            margin-top: 40px;
            margin-bottom: 20px;
            color: #222;
            font-weight: 600;
        }

        article h3 {
            font-size: 24px;
            margin-top: 30px;
            margin-bottom: 15px;
            color: #333;
            font-weight: 600;
        }

        article h4 {
            font-size: 20px;
            margin-top: 25px;
            margin-bottom: 12px;
            color: #444;
            font-weight: 600;
        }

        .transition-section {
            background: linear-gradient(to right, #fef5f3, #fff);
            padding: 40px;
            border-radius: 8px;
            margin-bottom: 50px;
            border-left: 4px solid #ee7451;
        }

        .transition-section p {
            font-size: 17px;
            color: #555;
            margin-bottom: 15px;
        }

        .links-section {
            background: #f9f9f9;
            padding: 50px;
            border-radius: 8px;
            border: 1px solid #e5e5e5;
        }

        .links-section h2 {
            font-size: 32px;
            margin-bottom: 30px;
            color: #222;
            text-align: center;
            font-weight: 700;
        }

        .links-section h3 {
            font-size: 22px;
            margin-top: 35px;
            margin-bottom: 20px;
            color: #333;
            font-weight: 600;
            padding-bottom: 10px;
            border-bottom: 2px solid #ee7451;
        }

        .links-section ul {
            list-style: none;
            column-count: 2;
            column-gap: 40px;
            margin-bottom: 30px;
        }

        .links-section li {
            break-inside: avoid;
            margin-bottom: 12px;
        }

        .links-section a {
            color: #ee7451;
            text-decoration: none;
            font-size: 16px;
            transition: all 0.2s ease;
            display: inline-block;
            position: relative;
            padding-left: 20px;
        }

        .links-section a:before {
            content: "→";
            position: absolute;
            left: 0;
            transition: transform 0.2s ease;
        }

        .links-section a:hover {
            color: #d65a3e;
            transform: translateX(5px);
        }

        .links-section a:hover:before {
            transform: translateX(5px);
        }

        footer {
            background: #2c2c2c;
            color: #aaa;
            padding: 40px 0;
            text-align: center;
            margin-top: 60px;
        }

        footer p {
            margin: 10px 0;
            font-size: 14px;
        }

        @media (max-width: 768px) {
            .content-wrapper {
                padding: 30px 20px;
            }

            h1 {
                font-size: 32px;
                padding-left: 15px;
            }

            article h2 {
                font-size: 26px;
            }

            article h3 {
                font-size: 21px;
            }

            nav ul {
                flex-direction: column;
            }

            nav a {
                padding: 15px 20px;
                border-bottom: 1px solid #eee;
                border-left: 3px solid transparent;
            }

            nav a:hover {
                border-bottom-color: #eee;
                border-left-color: #ee7451;
            }

            .links-section {
                padding: 30px 20px;
            }

            .links-section ul {
                column-count: 1;
            }

            .transition-section {
                padding: 25px 20px;
            }

            header .logo {
                font-size: 24px;
                margin-bottom: 10px;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 26px;
            }

            article h2 {
                font-size: 22px;
            }

            article p {
                font-size: 16px;
            }
        }