* { 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-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 800; }
        .highlight { background-color: #fff3cd; padding: 2px 5px; border-radius: 3px; }
        .emoji { font-size: 1.2em; }
        header {
            background: linear-gradient(135deg, #2c3e50, #4a6491);
            color: white;
            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;
            text-decoration: none;
            color: #ffd166;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            font-family: 'Arial Black', sans-serif;
            letter-spacing: -1px;
        }
        .my-logo span { color: #70d6ff; }
        .breadcrumb {
            background: #e9ecef;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: #6c757d;
        }
        .breadcrumb a { color: #2c3e50; text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .nav-desktop {
            display: flex;
            gap: 1.5rem;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
        }
        .nav-desktop a {
            color: #dfe6e9;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0;
            border-bottom: 2px solid transparent;
            transition: all 0.3s;
        }
        .nav-desktop a:hover {
            color: #ffd166;
            border-bottom-color: #ffd166;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background: #2c3e50;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            z-index: 999;
        }
        .nav-mobile.active { display: flex; }
        .nav-mobile a {
            color: white;
            text-decoration: none;
            padding: 1rem 2rem;
            border-bottom: 1px solid #3a506b;
            font-weight: 600;
        }
        .nav-mobile a:hover {
            background-color: #3a506b;
            color: #ffd166;
        }
        .search-form {
            display: flex;
            margin-top: 1rem;
            max-width: 500px;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.75rem 1rem;
            border: 2px solid #70d6ff;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-button {
            background: #70d6ff;
            color: #2c3e50;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .search-button:hover { background: #42c0ff; }
        main { padding: 2rem 0; background: white; }
        article {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 20px 3rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 5px solid #ffd166;
            padding-bottom: 0.5rem;
        }
        @media (max-width: 768px) { h1 { font-size: 2.2rem; } }
        h2 {
            font-size: 2rem;
            color: #4a6491;
            margin: 2.5rem 0 1rem;
            padding-top: 1rem;
        }
        h3 {
            font-size: 1.6rem;
            color: #5a7ab0;
            margin: 2rem 0 0.8rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #6c8ccc;
            margin: 1.5rem 0 0.6rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            color: #555;
            background: #f1f8ff;
            padding: 1.5rem;
            border-left: 5px solid #70d6ff;
            margin-bottom: 2.5rem;
            border-radius: 0 8px 8px 0;
        }
        .content-img {
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            max-width: 700px;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        blockquote {
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            border-left: 8px solid #ffd166;
            padding: 1.5rem 2rem;
            margin: 2rem 0;
            font-size: 1.2rem;
            color: #2c3e50;
            border-radius: 0 8px 8px 0;
        }
        blockquote cite {
            display: block;
            margin-top: 0.5rem;
            font-size: 1rem;
            color: #666;
        }
        .link-list {
            background: #e9f7fe;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .link-list h3 { margin-top: 0; }
        .link-list ul { list-style-position: inside; }
        .link-list li { margin-bottom: 0.8rem; }
        .link-list a {
            color: #2c3e50;
            text-decoration: none;
            border-bottom: 1px dashed #70d6ff;
            font-weight: 600;
        }
        .link-list a:hover {
            color: #ff6b6b;
            border-bottom-style: solid;
        }
        .interactive-section {
            background: #f8f9fa;
            border: 2px solid #dee2e6;
            border-radius: 15px;
            padding: 2rem;
            margin: 3rem 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .interactive-section h2 { text-align: center; }
        .rating-section {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
            justify-content: center;
            margin: 1.5rem 0;
        }
        .star-rating {
            display: flex;
            gap: 5px;
            direction: rtl;
        }
        .star-rating input { display: none; }
        .star-rating label {
            font-size: 2.5rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label { color: #ffd166; }
        .rating-form, .comment-form {
            display: grid;
            gap: 1rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .form-group { display: flex; flex-direction: column; }
        .form-input, .form-textarea {
            padding: 0.8rem 1rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
        }
        .form-textarea { min-height: 150px; resize: vertical; }
        .form-button {
            background: #2c3e50;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .form-button:hover { background: #4a6491; }
        footer {
            background: #2c3e50;
            color: #dfe6e9;
            padding: 3rem 0 1.5rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: #ffd166;
            margin-bottom: 1.5rem;
            font-size: 1.4rem;
        }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover { color: #70d6ff; }
        friend-link {
            display: block;
            background: #3a506b;
            padding: 1rem;
            border-radius: 8px;
            margin: 1rem 0;
        }
        friend-link a {
            color: #ffd166;
            font-weight: bold;
            text-decoration: none;
        }
        friend-link a:hover { text-decoration: underline; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #3a506b;
            font-size: 0.9rem;
            color: #95a5a6;
        }
        .update-time {
            background: #34495e;
            color: #ecf0f1;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            font-size: 0.9rem;
            display: inline-block;
            margin-top: 1rem;
        }
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .strategy-card {
            background: white;
            border: 1px solid #dee2e6;
            border-radius: 10px;
            padding: 1.5rem;
            box-shadow: 0 5px 10px rgba(0,0,0,0.05);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .strategy-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .strategy-card h4 { color: #2c3e50; }
        @media print {
            header, footer, .interactive-section, .breadcrumb, .search-form { display: none; }
            body { font-size: 12pt; color: black; background: white; }
            h1 { font-size: 18pt; }
            h2 { font-size: 16pt; }
            .intro { border: 1px solid #ccc; }
        }