* { 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: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        img { max-width: 100%; height: auto; display: block; }
        .site-header {
            background: linear-gradient(135deg, #1a5f7a 0%, #2a9d8f 100%);
            color: white;
            padding: 1.5rem 0;
            border-bottom-left-radius: 12px;
            border-bottom-right-radius: 12px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            margin-bottom: 2rem;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            padding: 0 1rem;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: #ffd166;
            text-decoration: none;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease;
        }
        .my-logo:hover {
            transform: scale(1.05);
            color: #fff;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
        }
        .nav-desktop a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 6px;
            transition: background-color 0.3s, color 0.3s;
        }
        .nav-desktop a:hover {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffd166;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #1a5f7a;
            width: 100%;
            margin-top: 1rem;
            border-radius: 8px;
            overflow: hidden;
        }
        .nav-mobile.active { display: flex; }
        .nav-mobile a {
            color: white;
            padding: 1rem 1.5rem;
            text-decoration: none;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .nav-mobile a:hover { background-color: rgba(255, 255, 255, 0.1); }
        .breadcrumb {
            padding: 1rem 1.5rem;
            background-color: #e9ecef;
            border-radius: 8px;
            margin: 1.5rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #1a5f7a;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        .content-area {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin-bottom: 3rem;
        }
        @media (max-width: 992px) {
            .content-area { grid-template-columns: 1fr; }
        }
        .main-content { background: white; padding: 2.5rem; border-radius: 12px; box-shadow: 0 6px 15px rgba(0, 0, 0, 0.05); }
        .sidebar {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            align-self: start;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a5f7a;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid #ffd166;
            padding-left: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: #2a9d8f;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #e9ecef;
        }
        h3 {
            font-size: 1.6rem;
            color: #264653;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #1a5f7a;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.25rem;
            font-weight: 500;
            color: #555;
            background-color: #f1f8e9;
            padding: 1.2rem;
            border-radius: 8px;
            border-left: 4px solid #8bc34a;
        }
        .highlight {
            background-color: #fff9c4;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        strong { color: #1a5f7a; }
        em { color: #2a9d8f; }
        a.content-link {
            color: #e76f51;
            text-decoration: none;
            border-bottom: 1px dotted #e76f51;
            transition: color 0.3s;
        }
        a.content-link:hover {
            color: #d62828;
            border-bottom-style: solid;
        }
        .search-box, .comment-form, .rating-form {
            background: #f1f8ff;
            padding: 1.8rem;
            border-radius: 10px;
            margin: 2.5rem 0;
            border: 1px solid #cfe2ff;
        }
        .search-box h3, .comment-form h3, .rating-form h3 { margin-top: 0; }
        .form-group { margin-bottom: 1.2rem; }
        label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #495057; }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ced4da;
            border-radius: 6px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #80bdff;
            box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
        }
        button {
            background: linear-gradient(to right, #2a9d8f, #1a5f7a);
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        button:hover {
            background: linear-gradient(to right, #21867a, #154d65);
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star.active, .star:hover { color: #ffc107; }
        .featured-image {
            margin: 2.5rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
            max-width: 800px;
            border: 8px solid white;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        ul, ol { margin-left: 1.8rem; margin-bottom: 1.5rem; }
        li { margin-bottom: 0.5rem; }
        .link-list { list-style: none; margin-left: 0; }
        .link-list li { margin-bottom: 0.8rem; }
        .link-list a {
            color: #1a5f7a;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.7rem;
            padding: 0.6rem;
            border-radius: 6px;
            transition: background-color 0.3s;
        }
        .link-list a:hover {
            background-color: #e9f7ef;
            color: #21867a;
        }
        .link-list i { color: #2a9d8f; }
        .site-footer {
            background: #264653;
            color: #e9ecef;
            padding: 3rem 2rem;
            border-top-left-radius: 12px;
            border-top-right-radius: 12px;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #ffd166;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #8d99ae;
            text-decoration: none;
            transition: color 0.3s;
        }
        friend-link a:hover { color: #ffd166; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #495057;
            font-size: 0.9rem;
            color: #adb5bd;
        }
        .update-time {
            background: #fff3cd;
            color: #856404;
            padding: 0.8rem;
            border-radius: 6px;
            display: inline-flex;
            align-items: center;
            gap: 0.7rem;
            margin: 1.5rem 0;
            font-weight: 600;
        }
        .text-center { text-align: center; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-3 { margin-top: 3rem; }
        .py-2 { padding-top: 2rem; padding-bottom: 2rem; }