* {
            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%);
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: 'Georgia', serif;
            color: #1a365d;
            margin-top: 1.5em;
            margin-bottom: 0.7em;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-bottom: 4px solid #2d7dd2;
            padding-bottom: 15px;
            margin-top: 0.5em;
        }
        h2 {
            font-size: 2.2rem;
            color: #2d7dd2;
            border-left: 5px solid #e63946;
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            color: #3a506b;
        }
        h4 {
            font-size: 1.4rem;
            color: #5a6c7d;
        }
        p {
            margin-bottom: 1.5em;
            text-align: justify;
            font-size: 1.1rem;
        }
        .container {
            display: grid;
            grid-template-columns: 1fr;
            grid-template-areas:
                "header"
                "breadcrumb"
                "nav"
                "main"
                "sidebar"
                "footer";
            gap: 25px;
        }
        @media (min-width: 992px) {
            .container {
                grid-template-columns: 1fr 300px;
                grid-template-areas:
                    "header header"
                    "breadcrumb breadcrumb"
                    "nav nav"
                    "main sidebar"
                    "footer footer";
            }
        }
        header {
            grid-area: header;
            background: linear-gradient(90deg, #1a365d 0%, #2d7dd2 100%);
            color: white;
            padding: 25px;
            border-radius: 0 0 15px 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .my-logo {
            font-size: 3.2rem;
            font-weight: 900;
            text-decoration: none;
            color: white;
            font-family: 'Arial Black', sans-serif;
            letter-spacing: 2px;
            text-shadow: 3px 3px 0 #e63946;
            transition: all 0.3s ease;
            margin-bottom: 10px;
        }
        .my-logo:hover {
            text-shadow: 5px 5px 0 #ffba08;
            transform: translateY(-3px);
        }
        .site-url {
            color: #a8dadc;
            font-size: 1.1rem;
        }
        .breadcrumb {
            grid-area: breadcrumb;
            background: #edf2f7;
            padding: 15px 25px;
            border-radius: 10px;
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: #2d7dd2;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        nav {
            grid-area: nav;
            background: white;
            border-radius: 10px;
            box-shadow: 0 3px 15px rgba(0,0,0,0.05);
            padding: 0 20px;
        }
        .nav-desktop {
            display: none;
        }
        .nav-mobile {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .hamburger {
            font-size: 1.8rem;
            color: #1a365d;
            cursor: pointer;
            background: none;
            border: none;
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 15px 0;
            border-top: 1px solid #eee;
        }
        .mobile-menu.active {
            display: flex;
        }
        .nav-desktop ul, .mobile-menu ul {
            list-style: none;
            display: flex;
            flex-direction: column;
        }
        .nav-desktop ul li, .mobile-menu ul li {
            margin: 5px 0;
        }
        .nav-desktop ul li a, .mobile-menu ul li a {
            display: block;
            padding: 12px 20px;
            color: #2d7dd2;
            text-decoration: none;
            font-weight: 600;
            border-radius: 8px;
            transition: all 0.3s ease;
        }
        .nav-desktop ul li a:hover, .mobile-menu ul li a:hover {
            background: #2d7dd2;
            color: white;
            transform: translateX(5px);
        }
        @media (min-width: 768px) {
            .nav-desktop {
                display: block;
            }
            .nav-desktop ul {
                flex-direction: row;
                justify-content: center;
                flex-wrap: wrap;
            }
            .nav-desktop ul li {
                margin: 0 5px;
            }
            .nav-mobile {
                display: none;
            }
        }
        main {
            grid-area: main;
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.06);
        }
        aside {
            grid-area: sidebar;
            background: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.06);
            align-self: start;
        }
        .widget {
            margin-bottom: 30px;
        }
        .widget h3 {
            font-size: 1.5rem;
            border-bottom: 2px solid #e63946;
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        .search-form, .comment-form, .rating-form {
            margin-bottom: 30px;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #3a506b;
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #e2e8f0;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        .form-control:focus {
            outline: none;
            border-color: #2d7dd2;
        }
        .btn {
            background: linear-gradient(90deg, #e63946 0%, #f28482 100%);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(226, 57, 70, 0.3);
        }
        .btn i {
            margin-right: 8px;
        }
        .rating-stars {
            display: flex;
            justify-content: space-between;
            margin: 15px 0;
            max-width: 300px;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 2rem;
            color: #e2e8f0;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .rating-stars input:checked ~ label,
        .rating-stars label:hover,
        .rating-stars label:hover ~ label {
            color: #ffba08;
        }
        .intro-box {
            background: linear-gradient(135deg, #a8dadc 0%, #e4edf5 100%);
            padding: 25px;
            border-radius: 10px;
            border-left: 5px solid #1a365d;
            margin: 30px 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .tip-box {
            background: #fff9db;
            border: 2px dashed #ffba08;
            padding: 20px;
            border-radius: 10px;
            margin: 25px 0;
        }
        .highlight {
            background: linear-gradient(120deg, #ffba08 0%, #ffba08 100%);
            background-repeat: no-repeat;
            background-size: 100% 40%;
            background-position: 0 90%;
            font-weight: 700;
            padding: 0 3px;
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin: 30px 0;
        }
        .link-item {
            background: #f8f9fa;
            border: 1px solid #e2e8f0;
            border-radius: 8px;
            padding: 15px;
            transition: all 0.3s ease;
        }
        .link-item:hover {
            border-color: #2d7dd2;
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        }
        .link-item a {
            color: #1a365d;
            text-decoration: none;
            font-weight: 600;
            display: flex;
            align-items: center;
        }
        .link-item a i {
            margin-right: 10px;
            color: #e63946;
        }
        .link-item a:hover {
            color: #2d7dd2;
        }
        .article-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            margin: 25px auto;
            display: block;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            transition: transform 0.5s ease;
        }
        .article-img:hover {
            transform: scale(1.02);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #5a6c7d;
            margin-top: -15px;
            margin-bottom: 25px;
            font-size: 0.95rem;
        }
        .update-time {
            background: #1a365d;
            color: white;
            padding: 10px 20px;
            border-radius: 8px;
            display: inline-block;
            margin: 20px 0;
            font-weight: 600;
        }
        footer {
            grid-area: footer;
            background: #1a365d;
            color: white;
            padding: 40px 25px;
            border-radius: 15px 15px 0 0;
            text-align: center;
            margin-top: 40px;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-links a {
            color: #a8dadc;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: white;
            text-decoration: underline;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.1);
            padding: 15px;
            border-radius: 8px;
            margin: 20px 0;
        }
        friend-link a {
            color: #ffba08;
            font-weight: 600;
            text-decoration: none;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 25px;
            margin-top: 25px;
            font-size: 0.9rem;
            color: #cbd5e0;
        }
        @media (max-width: 767px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 2.5rem;
            }
            main, aside {
                padding: 20px;
            }
            .link-list {
                grid-template-columns: 1fr;
            }
        }