:root {
            --primary-green: #2e8b57;
            --secondary-green: #3cb371;
            --accent-blue: #20b2aa;
            --dark-brown: #8b4513;
            --light-brown: #deb887;
            --background-cream: #f5f5dc;
            --text-dark: #333;
            --text-light: #666;
            --white: #fff;
            --shadow: rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background-color: var(--background-cream);
            padding-top: 80px;
        }
        a {
            color: var(--primary-green);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-blue);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--white);
            box-shadow: 0 2px 15px var(--shadow);
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo {
            font-family: 'Georgia', serif;
            font-size: 2.2rem;
            font-weight: bold;
            color: var(--primary-green);
            text-shadow: 1px 1px 1px var(--shadow);
        }
        .my-logo span {
            color: var(--accent-blue);
        }
        .my-logo:hover {
            transform: scale(1.02);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .nav-links a {
            font-weight: 600;
            padding: 5px 0;
            position: relative;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-blue);
            transition: width 0.3s;
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: var(--primary-green);
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 20px;
            background-color: #e9f5eb;
            border-bottom: 1px solid #d0e6d6;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary-green);
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 30px 0;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        article {
            background-color: var(--white);
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: 0 5px 15px var(--shadow);
        }
        article h1 {
            font-size: 2.8rem;
            color: var(--primary-green);
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 3px solid var(--light-brown);
            padding-bottom: 15px;
        }
        article h2 {
            font-size: 2rem;
            color: var(--dark-brown);
            margin-top: 40px;
            margin-bottom: 15px;
            padding-bottom: 8px;
            border-bottom: 2px dashed var(--secondary-green);
        }
        article h3 {
            font-size: 1.6rem;
            color: var(--primary-green);
            margin-top: 30px;
            margin-bottom: 10px;
        }
        article h4 {
            font-size: 1.3rem;
            color: var(--accent-blue);
            margin-top: 25px;
            margin-bottom: 10px;
        }
        article p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        article strong {
            color: var(--dark-brown);
            font-weight: 700;
        }
        article em {
            color: var(--text-light);
            font-style: italic;
        }
        .intro {
            font-size: 1.2rem;
            background-color: #f0f8ff;
            padding: 20px;
            border-left: 5px solid var(--accent-blue);
            margin-bottom: 30px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .highlight-box {
            background-color: #fffaf0;
            border: 1px solid var(--light-brown);
            padding: 25px;
            border-radius: var(--border-radius);
            margin: 25px 0;
            box-shadow: inset 0 0 10px var(--shadow);
        }
        .tip {
            background-color: #e6f7ee;
            border-left: 4px solid var(--secondary-green);
            padding: 15px 20px;
            margin: 20px 0;
        }
        .tip i {
            color: var(--secondary-green);
            margin-right: 10px;
        }
        .fish-image {
            width: 100%;
            max-width: 700px;
            margin: 30px auto;
            border: 5px solid var(--light-brown);
            border-radius: var(--border-radius);
            overflow: hidden;
        }
        .fish-image img {
            width: 100%;
            height: auto;
            transition: transform 0.5s;
        }
        .fish-image img:hover {
            transform: scale(1.03);
        }
        .caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: 8px;
            font-size: 0.95rem;
        }
        aside {
            background-color: var(--white);
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: 0 5px 15px var(--shadow);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .sidebar-widget {
            margin-bottom: 30px;
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            color: var(--dark-brown);
            margin-bottom: 15px;
            padding-bottom: 8px;
            border-bottom: 1px solid #eee;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 15px;
            border: 1px solid #ccc;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--primary-green);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--secondary-green);
        }
        .rating-form {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .stars {
            display: flex;
            gap: 5px;
            justify-content: center;
            font-size: 1.8rem;
            color: #ddd;
            margin-bottom: 10px;
        }
        .stars i {
            cursor: pointer;
            transition: color 0.2s;
        }
        .stars i:hover,
        .stars i.active {
            color: #ffcc00;
        }
        .rating-form input,
        .rating-form textarea {
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: var(--border-radius);
            font-family: inherit;
        }
        .rating-form button,
        .comment-form button {
            background-color: var(--accent-blue);
            color: white;
            border: none;
            padding: 12px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: bold;
            transition: var(--transition);
        }
        .rating-form button:hover,
        .comment-form button:hover {
            background-color: var(--primary-green);
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dotted #eee;
        }
        .related-links a {
            display: block;
            padding: 8px 10px;
            border-radius: 4px;
            transition: background-color 0.3s;
        }
        .related-links a:hover {
            background-color: #f0f8ff;
            text-decoration: none;
        }
        footer {
            background-color: var(--dark-brown);
            color: var(--white);
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h3 {
            color: var(--light-brown);
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .friend-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .friend-links a {
            color: #deb887;
        }
        .friend-links a:hover {
            color: white;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            margin-top: 30px;
            border-top: 1px solid #6b3e1a;
            color: #aaa;
            font-size: 0.9rem;
        }
        .update-time {
            background-color: #fff3cd;
            color: #856404;
            padding: 10px 15px;
            border-radius: var(--border-radius);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-top: 20px;
            font-weight: bold;
        }
        @media (max-width: 768px) {
            body {
                padding-top: 70px;
            }
            .hamburger {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                background-color: var(--white);
                width: 100%;
                flex-direction: column;
                align-items: center;
                padding: 20px 0;
                gap: 0;
                box-shadow: 0 5px 10px var(--shadow);
                transform: translateY(-150%);
                opacity: 0;
                transition: transform 0.4s ease, opacity 0.3s ease;
                z-index: 999;
            }
            .nav-links.active {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-links li {
                width: 100%;
                text-align: center;
            }
            .nav-links a {
                display: block;
                padding: 15px;
                border-bottom: 1px solid #eee;
            }
            .nav-links a::after {
                display: none;
            }
            .header-container {
                padding: 10px 15px;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            article {
                padding: 25px;
            }
            article h1 {
                font-size: 2.2rem;
            }
            article h2 {
                font-size: 1.7rem;
            }
            aside {
                position: static;
            }
        }