* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #2c3e50;
            background: linear-gradient(135deg, #f9f7f0 0%, #e8f4f8 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        a { text-decoration: none; color: #2980b9; transition: color 0.3s ease; }
        a:hover { color: #e74c3c; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: #1a252f;
            color: #ecf0f1;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            font-family: 'Trebuchet MS', sans-serif;
            background: linear-gradient(90deg, #27ae60, #3498db);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo:hover { transform: scale(1.05); }
        .breadcrumb {
            font-size: 0.9rem;
            margin-top: 0.5rem;
            color: #bdc3c7;
        }
        .breadcrumb a { color: #ecf0f1; }
        .breadcrumb span { margin: 0 5px; }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: #ecf0f1;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
        }
        nav a:hover { background: #34495e; }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #ecf0f1;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #2c3e50;
                padding: 1rem;
                box-shadow: 0 5px 15px rgba(0,0,0,0.2);
            }
            nav ul.active { display: flex; }
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        article {
            background: white;
            border-radius: 15px;
            padding: 2.5rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            margin-bottom: 2rem;
        }
        h1 {
            font-size: 3.2rem;
            color: #1a252f;
            margin-bottom: 1.5rem;
            text-align: center;
            border-bottom: 4px solid #27ae60;
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2.4rem;
            color: #2980b9;
            margin: 2.5rem 0 1.2rem;
            padding-left: 0.5rem;
            border-left: 6px solid #e74c3c;
        }
        h3 {
            font-size: 1.8rem;
            color: #27ae60;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #8e44ad;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background: #fff9e6;
            border-left: 5px solid #f39c12;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 10px 10px 0;
        }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }
        strong { color: #c0392b; }
        .image-wrapper {
            float: right;
            margin: 0 0 1.5rem 2rem;
            max-width: 450px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
        }
        .image-wrapper img {
            transition: transform 0.5s ease;
        }
        .image-wrapper img:hover {
            transform: scale(1.03);
        }
        .clearfix::after {
            content: "";
            clear: both;
            display: table;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .interactive-box {
            background: #f8f9fa;
            border: 2px solid #dfe6e9;
            border-radius: 12px;
            padding: 1.8rem;
            text-align: center;
            transition: all 0.3s ease;
        }
        .interactive-box:hover {
            border-color: #3498db;
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(52, 152, 219, 0.2);
        }
        .interactive-box h3 { margin-top: 0; }
        form input, form textarea, form select {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #bdc3c7;
            border-radius: 8px;
            font-size: 1rem;
        }
        form button {
            background: #27ae60;
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        form button:hover { background: #219653; }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .stars i {
            color: #f1c40f;
            cursor: pointer;
            font-size: 1.8rem;
            transition: color 0.2s;
        }
        .update-time {
            text-align: right;
            font-style: italic;
            color: #7f8c8d;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px dashed #bdc3c7;
        }
        footer {
            background: #1a252f;
            color: #ecf0f1;
            padding: 2.5rem 0;
            margin-top: auto;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h3 {
            color: #3498db;
            margin-bottom: 1.2rem;
            font-size: 1.5rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
            color: #bdc3c7;
            transition: color 0.3s;
        }
        friend-link:hover {
            color: #27ae60;
            padding-left: 0.5rem;
        }
        .copyright {
            text-align: center;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            font-size: 0.9rem;
            color: #95a5a6;
        }