* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            min-height: 100vh;
        }
        a { color: #2a6dc9; text-decoration: none; transition: color 0.3s; }
        a:hover { color: #1a4d8f; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(90deg, #0d3a7a 0%, #1a5ab8 100%);
            color: white;
            padding: 1.2rem 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: 800;
            color: #ffcc00;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
            letter-spacing: 1px;
        }
        .my-logo:hover { text-decoration: none; color: #ffdb4d; }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: #e6f2ff;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 5px;
        }
        nav a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #eef5ff;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0e1ff;
        }
        .breadcrumb a { color: #555; }
        .breadcrumb a:hover { color: #0d3a7a; }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2.5rem 0;
        }
        @media (max-width: 992px) {
            main { grid-template-columns: 1fr; }
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
        }
        h1 {
            font-size: 2.8rem;
            color: #0d3a7a;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffcc00;
            padding-bottom: 0.8rem;
        }
        h2 {
            font-size: 2rem;
            color: #1a5ab8;
            margin: 2.5rem 0 1.2rem;
            padding-left: 0.8rem;
            border-left: 5px solid #ffcc00;
        }
        h3 {
            font-size: 1.6rem;
            color: #2a6dc9;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #3d7dd8;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        strong { color: #0d3a7a; font-weight: 700; }
        em { color: #666; }
        .highlight-box {
            background: linear-gradient(to right, #f0f8ff, #e6f2ff);
            border-left: 5px solid #2a6dc9;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .image-container {
            margin: 2.5rem 0;
            text-align: center;
        }
        .image-container img {
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            border: 1px solid #ddd;
        }
        .image-caption {
            font-style: italic;
            color: #666;
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .update-time {
            font-size: 0.95rem;
            color: #888;
            text-align: right;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px dashed #ccc;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: #0d3a7a;
            border-bottom: 2px solid #ffcc00;
            padding-bottom: 0.5rem;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.9rem;
            margin-bottom: 1rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #2a6dc9;
            box-shadow: 0 0 0 3px rgba(42, 109, 201, 0.1);
        }
        button {
            background: linear-gradient(90deg, #0d3a7a, #2a6dc9);
            color: white;
            border: none;
            padding: 1rem 1.8rem;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(42, 109, 201, 0.3);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .rating-stars .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: #ffcc00;
        }
        footer {
            background: #0d3a7a;
            color: #e6f2ff;
            padding: 3rem 0 2rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2.5rem;
        }
        .footer-section { flex: 1; min-width: 250px; }
        .footer-section h3 {
            color: #ffcc00;
            font-size: 1.4rem;
            margin-bottom: 1.2rem;
            border-bottom: 2px solid #2a6dc9;
            padding-bottom: 0.5rem;
        }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.7rem; }
        .footer-links a { color: #b3d1ff; }
        .footer-links a:hover { color: #ffcc00; }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1rem;
            margin-bottom: 1rem;
            border-radius: 8px;
            border-left: 4px solid #ffcc00;
        }
        .copyright {
            text-align: center;
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid #2a6dc9;
            font-size: 0.9rem;
            color: #b3d1ff;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.7rem; }
            article { padding: 1.8rem; }
            nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #0d3a7a;
                padding: 1rem;
                box-shadow: 0 10px 20px rgba(0,0,0,0.2);
            }
            nav ul.show { display: flex; }
            .hamburger { display: block; }
            .header-content { position: relative; }
        }