* {
            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%, #e4e8f0 100%);
            min-height: 100vh;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        h1, h2, h3, h4, h5, h6 {
            color: #1a365d;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
        }
        h1 {
            font-size: 2.8rem;
            text-align: center;
            margin-top: 2rem;
            margin-bottom: 1.5rem;
            background: linear-gradient(90deg, #1a365d, #2d5aa0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        h2 {
            font-size: 2.2rem;
            border-left: 5px solid #e53e3e;
            padding-left: 15px;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.8rem;
            color: #2d5aa0;
            margin-top: 2rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #4a5568;
            margin-top: 1.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        a {
            color: #2d5aa0;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #e53e3e;
            text-decoration: underline;
        }
        strong {
            color: #1a365d;
            font-weight: 700;
        }
        em {
            color: #718096;
        }
        .highlight {
            background-color: #fffacd;
            padding: 2px 6px;
            border-radius: 3px;
        }
        header {
            background: linear-gradient(90deg, #1a365d 0%, #2d5aa0 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: #fbd38d;
            text-decoration: none;
        }
        .my-logo i {
            color: #fbd38d;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-links a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            transition: background 0.3s;
        }
        .nav-links a:hover {
            background-color: rgba(255,255,255,0.1);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #edf2f7;
            border-bottom: 1px solid #cbd5e0;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 0.5rem;
            color: #718096;
        }
        .breadcrumb a {
            color: #4a5568;
        }
        .breadcrumb a:hover {
            color: #1a365d;
        }
        .search-form {
            margin: 2rem auto;
            max-width: 600px;
            display: flex;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-button {
            background: linear-gradient(90deg, #e53e3e, #c53030);
            color: white;
            border: none;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-button:hover {
            background: linear-gradient(90deg, #c53030, #9b2c2c);
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #718096;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #e2e8f0;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .update-time {
            font-style: italic;
        }
        .featured-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 2rem 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .content-block {
            margin-bottom: 3rem;
        }
        .tip-box {
            background: #e6fffa;
            border-left: 5px solid #38b2ac;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip-box h4 {
            color: #234e52;
            margin-top: 0;
        }
        .link-list {
            background: #f7fafc;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .link-list ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
        }
        .link-list li {
            padding: 0.5rem 0;
            border-bottom: 1px dashed #cbd5e0;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            border-bottom: 2px solid #e2e8f0;
            padding-bottom: 0.5rem;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .stars {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            color: #cbd5e0;
            cursor: pointer;
        }
        .stars .active {
            color: #f6ad55;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        label {
            font-weight: 600;
            color: #4a5568;
        }
        input, textarea, select {
            padding: 0.8rem 1rem;
            border: 1px solid #cbd5e0;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #2d5aa0;
            box-shadow: 0 0 0 3px rgba(45, 90, 160, 0.1);
        }
        .submit-button {
            background: linear-gradient(90deg, #1a365d, #2d5aa0);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.3s;
        }
        .submit-button:hover {
            background: linear-gradient(90deg, #2d5aa0, #1a365d);
        }
        friend-links {
            display: block;
            background: #1a365d;
            color: white;
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        friend-links h3 {
            color: #fbd38d;
            border: none;
            text-align: center;
        }
        friend-links ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2rem;
            margin-top: 1rem;
        }
        friend-links a {
            color: #90cdf4;
            font-weight: 600;
        }
        friend-links a:hover {
            color: white;
        }
        footer {
            background: #1a365d;
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #fbd38d;
            border-bottom: 2px solid #2d5aa0;
            padding-bottom: 0.5rem;
            margin-bottom: 1rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2d5aa0;
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .header-container {
                flex-direction: column;
                gap: 1rem;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                text-align: center;
                margin-top: 1rem;
            }
            .nav-links.active {
                display: flex;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1rem;
                right: 1rem;
            }
            article {
                padding: 1.5rem;
            }
        }