* {
            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;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .site-header {
            background: linear-gradient(90deg, #1a3c34 0%, #2d5c52 100%);
            color: #fff;
            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;
        }
        .my-logo {
            font-family: 'Georgia', serif;
            font-size: 2.2rem;
            font-weight: bold;
            color: #ffd166;
            text-decoration: none;
            letter-spacing: 1px;
            transition: color 0.3s ease;
        }
        .my-logo:hover {
            color: #fff;
            text-shadow: 0 0 8px rgba(255, 209, 102, 0.7);
        }
        .breadcrumb {
            padding: 0.8rem 2rem;
            background-color: #e9f1f5;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0dde5;
        }
        .breadcrumb a {
            color: #2d5c52;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: #d1e8e2;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.3s;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: #ffd166;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ffd166;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: #1a3c34;
            padding: 1rem;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: #d1e8e2;
            padding: 0.8rem 1rem;
            text-decoration: none;
            border-bottom: 1px solid #2d5c52;
            font-weight: 600;
        }
        .mobile-nav a:hover {
            background-color: #2d5c52;
            color: #ffd166;
        }
        .main-container {
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 1024px) {
            .main-container {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: #fff;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        }
        .article-meta {
            color: #666;
            font-size: 0.95rem;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px dashed #ccc;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .update-time {
            color: #e63946;
            font-weight: bold;
        }
        h1 {
            font-size: 2.8rem;
            color: #1a3c34;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-left: 6px solid #ffd166;
            padding-left: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: #2d5c52;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9f1f5;
        }
        h3 {
            font-size: 1.6rem;
            color: #457b9d;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #6a994e;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .intro {
            font-size: 1.3rem;
            color: #555;
            background: #f1f9f7;
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 2rem;
            border-left: 5px solid #2d5c52;
        }
        emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        blockquote {
            border-left: 4px solid #ffd166;
            background: #fef9e7;
            padding: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #555;
            border-radius: 0 10px 10px 0;
        }
        .feature-img {
            width: 80%;
            margin: 2.5rem auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            border: 5px solid #fff;
        }
        .img-caption {
            text-align: center;
            font-size: 0.95rem;
            color: #666;
            margin-top: 0.5rem;
            font-style: italic;
        }
        .content-link {
            color: #1a759f;
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted #1a759f;
            transition: all 0.3s;
        }
        .content-link:hover {
            color: #e63946;
            border-bottom: 1px solid #e63946;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: #fff;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .widget-title {
            font-size: 1.4rem;
            color: #1a3c34;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ffd166;
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex: 1;
            padding: 0.9rem 1rem;
            border: 2px solid #2d5c52;
            border-right: none;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            outline: none;
        }
        .search-btn {
            background: #2d5c52;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background: #1a3c34;
        }
        .rating-form,
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin-bottom: 0.5rem;
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: #ffd166;
        }
        .form-input,
        .form-textarea {
            padding: 0.9rem;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-input:focus,
        .form-textarea:focus {
            border-color: #2d5c52;
            outline: none;
            box-shadow: 0 0 0 3px rgba(45, 92, 82, 0.2);
        }
        .form-textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(90deg, #2d5c52, #3a7c6e);
            color: white;
            border: none;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
        }
        .submit-btn:hover {
            background: linear-gradient(90deg, #1a3c34, #2d5c52);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .site-footer {
            background: #1a3c34;
            color: #d1e8e2;
            padding: 3rem 2rem 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-section h3 {
            color: #ffd166;
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #b0d4ce;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 5px;
        }
        friend-link {
            display: inline-block;
            background: #2d5c52;
            color: #ffd166;
            padding: 0.5rem 1rem;
            margin: 0.3rem;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
        }
        friend-link:hover {
            background: #ffd166;
            color: #1a3c34;
            transform: scale(1.05);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #2d5c52;
            color: #8fbdb5;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .main-nav ul {
                display: none;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .main-container {
                padding: 0 1rem;
                gap: 1.5rem;
            }
            .feature-img {
                width: 100%;
            }
        }