* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #e0f7ff 0%, #f0f9ff 100%);
            min-height: 100vh;
            padding-bottom: 2rem;
        }
        a {
            color: #0066cc;
            text-decoration: none;
            transition: color 0.3s ease, background-color 0.3s ease;
        }
        a:hover {
            color: #ff6600;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 95%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .site-header {
            background: linear-gradient(90deg, #003366, #0055a4);
            color: white;
            padding: 1.5rem 0;
            box-shadow: 0 4px 12px rgba(0, 60, 120, 0.2);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Arial Rounded MT Bold', sans-serif;
            font-size: 2.2rem;
            font-weight: 800;
            color: #4dd0e1;
            text-shadow: 0 2px 4px rgba(0,0,0,0.5);
            letter-spacing: 1px;
        }
        .my-logo a {
            color: inherit;
        }
        .my-logo span {
            color: #ffcc00;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            background: transparent;
            border: none;
            padding: 0.5rem;
        }
        .hamburger span {
            height: 3px;
            width: 25px;
            background: #fff;
            margin: 3px 0;
            border-radius: 2px;
            transition: 0.3s;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #cce7ff;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            font-size: 1.05rem;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: #fff;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 85px;
                left: 0;
                width: 100%;
                background: #003366;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease-in-out;
                z-index: 999;
                padding: 1rem 0;
            }
            .main-nav.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .main-nav ul {
                flex-direction: column;
                align-items: center;
                gap: 1rem;
            }
        }
        .breadcrumb {
            background: #f0f8ff;
            padding: 1rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid #cce0ff;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #666;
        }
        .search-section {
            background: #fff;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 80, 160, 0.08);
            margin-bottom: 3rem;
            text-align: center;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 1rem auto 0;
        }
        .search-form input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #4dd0e1;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background: linear-gradient(to right, #4dd0e1, #0097a7);
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: bold;
            font-size: 1rem;
            transition: background 0.3s;
        }
        .search-form button:hover {
            background: linear-gradient(to right, #0097a7, #006978);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin-top: 2rem;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-main {
            background: white;
            padding: 3rem;
            border-radius: 16px;
            box-shadow: 0 8px 25px rgba(0, 60, 120, 0.1);
        }
        .article-header {
            border-bottom: 3px solid #4dd0e1;
            padding-bottom: 1.5rem;
            margin-bottom: 2.5rem;
        }
        h1 {
            font-size: 2.8rem;
            color: #003366;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .article-meta {
            color: #666;
            font-size: 0.95rem;
            display: flex;
            gap: 1.5rem;
            align-items: center;
        }
        .update-time {
            background: #e3f2fd;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-weight: 600;
        }
        h2 {
            font-size: 2rem;
            color: #0055a4;
            margin: 3rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #b3e5fc;
        }
        h3 {
            font-size: 1.6rem;
            color: #0077b6;
            margin: 2.5rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #0097a7;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.8rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight {
            background-color: #e3f2fd;
            border-left: 5px solid #4dd0e1;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
        }
        .tip-box {
            background: #fff8e1;
            border: 1px solid #ffd54f;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .tip-box strong {
            color: #ff8f00;
        }
        .feature-img {
            width: 100%;
            max-width: 800px;
            margin: 2.5rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 6px 20px rgba(0,0,0,0.15);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .related-links {
            background: #f9f9f9;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .related-links h4 {
            margin-top: 0;
        }
        .related-links ul {
            list-style: square inside;
            padding-left: 1rem;
        }
        .related-links li {
            margin-bottom: 0.5rem;
        }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: 16px;
            box-shadow: 0 5px 20px rgba(0, 60, 120, 0.08);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-section {
            margin-bottom: 2.5rem;
        }
        .sidebar h3 {
            font-size: 1.4rem;
            color: #003366;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #e0e0e0;
        }
        .sidebar ul {
            list-style: none;
        }
        .sidebar li {
            margin-bottom: 0.8rem;
            padding-left: 1.2rem;
            position: relative;
        }
        .sidebar li::before {
            content: '🐠';
            position: absolute;
            left: 0;
        }
        .rating-section, .comment-section {
            background: white;
            padding: 2.5rem;
            border-radius: 16px;
            box-shadow: 0 5px 20px rgba(0, 60, 120, 0.08);
            margin-top: 3rem;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
            max-width: 700px;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 2rem;
            color: #ffcc00;
            margin-bottom: 0.5rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            transition: transform 0.2s;
        }
        .star-rating label:hover {
            transform: scale(1.2);
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #0055a4;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 0.9rem 1rem;
            border: 1px solid #b3e5fc;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: #4dd0e1;
            box-shadow: 0 0 0 3px rgba(77, 208, 225, 0.2);
        }
        .submit-btn {
            background: linear-gradient(to right, #00bcd4, #0097a7);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            align-self: flex-start;
            transition: background 0.3s, transform 0.2s;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, #0097a7, #006978);
            transform: translateY(-3px);
        }
        .site-footer {
            background: #003366;
            color: #cce7ff;
            padding: 3rem 0 2rem;
            margin-top: 4rem;
            border-top: 5px solid #4dd0e1;
        }
        .footer-container {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 1.5rem;
        }
        friend-link h3 {
            color: #4dd0e1;
            margin-bottom: 1rem;
        }
        friend-link ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 0.8rem;
        }
        friend-link a {
            color: #a3d5ff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        friend-link a:hover {
            color: #ffcc00;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #88c1ff;
            font-size: 0.95rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .bold-highlight {
            font-weight: 800;
            color: #003366;
        }
        .text-center {
            text-align: center;
        }
        .mb-3 { margin-bottom: 3rem; }
        .mt-3 { margin-top: 3rem; }