* { 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, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(to right, #2c3e50, #4a6491);
            color: white;
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1.5rem;
        }
        .my-logo {
            font-family: 'Impact', 'Arial Black', sans-serif;
            font-size: 2.4rem;
            font-weight: bold;
            text-decoration: none;
            color: #ffd700;
            letter-spacing: 1px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            transition: transform 0.3s ease, color 0.3s ease;
        }
        .my-logo:hover {
            color: #fff;
            transform: scale(1.05);
        }
        .my-logo span { color: #e74c3c; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #ecf0f1;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            background-color: rgba(255, 255, 255, 0.15);
            border-color: #ffd700;
            color: #ffd700;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background-color: #f8f9fa;
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb a {
            color: #3498db;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        .search-comment-section {
            background: white;
            padding: 2rem;
            margin: 2rem auto;
            border-radius: 12px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.08);
            max-width: 1200px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .module {
            padding: 1.5rem;
            border-left: 5px solid #e74c3c;
            background: #f8f9fa;
            border-radius: 0 8px 8px 0;
        }
        .module h3 {
            color: #2c3e50;
            margin-bottom: 1rem;
            font-size: 1.4rem;
        }
        .module form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .module input,
        .module textarea,
        .module select {
            padding: 0.8rem;
            border: 1px solid #bdc3c7;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .module input:focus,
        .module textarea:focus {
            outline: none;
            border-color: #3498db;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        .module button {
            background: linear-gradient(to right, #e74c3c, #c0392b);
            color: white;
            border: none;
            padding: 0.9rem 1.5rem;
            border-radius: 6px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
        }
        .module button:hover {
            background: linear-gradient(to right, #c0392b, #a93226);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(231, 76, 60, 0.3);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #f1c40f;
            cursor: pointer;
            justify-content: center;
            margin: 1rem 0;
        }
        .stars span:hover,
        .stars span:hover ~ span {
            color: #f39c12;
        }
        .content-container {
            flex: 1;
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 1024px) {
            .content-container { grid-template-columns: 1fr; }
        }
        .main-content {
            background: white;
            padding: 3rem;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }
        article h1 {
            font-size: 3.2rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #e74c3c;
            padding-bottom: 1rem;
        }
        article h2 {
            font-size: 2.2rem;
            color: #34495e;
            margin: 2.5rem 0 1.2rem;
            padding-top: 1rem;
            border-top: 1px dashed #bdc3c7;
        }
        article h3 {
            font-size: 1.7rem;
            color: #16a085;
            margin: 2rem 0 1rem;
        }
        article h4 {
            font-size: 1.3rem;
            color: #8e44ad;
            margin: 1.5rem 0 0.8rem;
        }
        article p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
            hyphens: auto;
        }
        article emoji {
            font-size: 1.2em;
            margin: 0 0.2rem;
            vertical-align: middle;
        }
        .highlight-box {
            background: linear-gradient(120deg, #e3f2fd, #fce4ec);
            border-left: 6px solid #3498db;
            padding: 1.8rem;
            margin: 2.5rem 0;
            border-radius: 0 10px 10px 0;
            box-shadow: 3px 3px 10px rgba(0,0,0,0.05);
        }
        .feature-img {
            width: 100%;
            border-radius: 12px;
            margin: 2.5rem auto;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            border: 5px solid #fff;
            outline: 1px solid #ddd;
        }
        .internal-link {
            color: #2980b9;
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted #2980b9;
            transition: all 0.2s;
        }
        .internal-link:hover {
            color: #e74c3c;
            border-bottom-style: solid;
        }
        .last-updated {
            text-align: right;
            font-style: italic;
            color: #7f8c8d;
            font-size: 0.95rem;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px solid #ecf0f1;
        }
        .sidebar {
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            margin-bottom: 2rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            border-top: 4px solid #2c3e50;
        }
        .sidebar-widget h3 {
            color: #2c3e50;
            margin-bottom: 1.2rem;
            font-size: 1.4rem;
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }
        .sidebar-widget ul {
            list-style: none;
        }
        .sidebar-widget li {
            padding: 0.8rem 0;
            border-bottom: 1px solid #f1f1f1;
        }
        .sidebar-widget li:last-child { border-bottom: none; }
        .sidebar-widget a {
            color: #2c3e50;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.7rem;
            transition: color 0.3s, transform 0.3s;
        }
        .sidebar-widget a:hover {
            color: #e74c3c;
            transform: translateX(5px);
        }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 2rem 2rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-logo {
            font-size: 2rem;
            color: #ffd700;
            margin-bottom: 1rem;
        }
        .footer-section h4 {
            color: #ffd700;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 0.7rem;
        }
        .footer-section h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 3px;
            background: #e74c3c;
        }
        .footer-section ul { list-style: none; }
        .footer-section li { margin-bottom: 0.8rem; }
        .footer-section a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-section a:hover { color: #ffd700; }
        friend-link {
            display: block;
            background: #34495e;
            padding: 1rem;
            border-radius: 6px;
            margin-bottom: 0.8rem;
            border-left: 4px solid #3498db;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: stretch; }
            .main-nav { display: none; width: 100%; }
            .main-nav.active { display: block; }
            .main-nav ul { flex-direction: column; gap: 0.5rem; }
            .main-nav a { display: block; text-align: center; padding: 1rem; }
            .hamburger { display: block; }
            .content-container,
            .search-comment-section { padding: 0 1rem; }
            .main-content { padding: 2rem 1.5rem; }
            article h1 { font-size: 2.5rem; }
            article h2 { font-size: 1.9rem; }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .main-content, .sidebar-widget {
            animation: fadeIn 0.8s ease-out;
        }