* { 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-color: #f0f9ff;
            background-image: linear-gradient(180deg, #e6f7ff 0%, #f0f9ff 100%);
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        h1, h2, h3, h4 { color: #006994; margin-bottom: 1rem; font-weight: 700; }
        h1 { font-size: 2.8rem; line-height: 1.2; border-bottom: 3px solid #00a8e8; padding-bottom: 15px; margin-top: 1.5rem; }
        h2 { font-size: 2.1rem; margin-top: 2.5rem; padding-left: 10px; border-left: 5px solid #00a8e8; }
        h3 { font-size: 1.7rem; color: #0284a8; margin-top: 2rem; }
        h4 { font-size: 1.4rem; color: #2a9d8f; margin-top: 1.5rem; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        a { color: #0077b6; text-decoration: none; transition: color 0.3s, background-color 0.3s; }
        a:hover { color: #023e8a; background-color: #e6f7ff; }
        strong, b { color: #d35400; font-weight: 700; }
        em { font-style: italic; color: #555; }
        .container {
            display: grid;
            grid-template-columns: 1fr;
            grid-template-areas:
                "header"
                "nav"
                "breadcrumb"
                "main"
                "sidebar"
                "footer";
            gap: 25px;
        }
        @media (min-width: 992px) {
            .container {
                grid-template-columns: 3fr 1fr;
                grid-template-areas:
                    "header header"
                    "nav nav"
                    "breadcrumb breadcrumb"
                    "main sidebar"
                    "footer footer";
            }
        }
        header { grid-area: header; padding: 20px 0; text-align: center; }
        .my-logo {
            font-family: 'Arial Rounded MT Bold', sans-serif;
            font-size: 3.5rem;
            color: #00a8e8;
            text-shadow: 3px 3px 0 #023e8a, 6px 6px 10px rgba(0,0,0,0.1);
            display: inline-block;
            transition: transform 0.3s;
        }
        .my-logo:hover { transform: scale(1.05); }
        .logo-sub { display: block; font-size: 1rem; color: #666; margin-top: -5px; }
        nav {
            grid-area: nav;
            background: linear-gradient(135deg, #006994, #00a8e8);
            border-radius: 12px;
            padding: 0;
            box-shadow: 0 5px 15px rgba(0,105,148,0.2);
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 20px;
        }
        .nav-links {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links li { position: relative; }
        .nav-links a {
            color: white;
            padding: 18px 20px;
            display: block;
            font-weight: 600;
            border-radius: 8px;
            margin: 5px;
        }
        .nav-links a:hover {
            background-color: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            color: white;
            background: none;
            border: none;
            cursor: pointer;
            padding: 10px;
        }
        @media (max-width: 991px) {
            .hamburger { display: block; }
            .nav-links {
                flex-direction: column;
                width: 100%;
                display: none;
                padding: 10px 0;
            }
            .nav-links.active { display: flex; }
            .nav-links a { padding: 15px 20px; margin: 2px 0; }
        }
        .breadcrumb { grid-area: breadcrumb; font-size: 0.9rem; color: #666; padding: 10px 15px; background-color: #e3f2fd; border-radius: 8px; }
        .breadcrumb a { color: #0077b6; }
        .breadcrumb a:hover { text-decoration: underline; }
        main { grid-area: main; background-color: white; padding: 30px; border-radius: 15px; box-shadow: 0 10px 30px rgba(0,0,0,0.05); }
        aside { grid-area: sidebar; }
        .sidebar-widget {
            background: white;
            padding: 25px;
            margin-bottom: 25px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar-widget h3 { font-size: 1.4rem; margin-top: 0; }
        .search-box { position: relative; }
        .search-box input {
            width: 100%;
            padding: 14px 50px 14px 20px;
            border: 2px solid #00a8e8;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: box-shadow 0.3s;
        }
        .search-box input:focus { box-shadow: 0 0 0 3px rgba(0,168,232,0.3); }
        .search-box button {
            position: absolute;
            right: 6px;
            top: 50%;
            transform: translateY(-50%);
            background: #00a8e8;
            color: white;
            border: none;
            border-radius: 50%;
            width: 42px;
            height: 42px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-box button:hover { background: #006994; }
        .form-group { margin-bottom: 20px; }
        .form-group label { display: block; margin-bottom: 8px; font-weight: 600; color: #006994; }
        .form-control {
            width: 100%;
            padding: 14px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus { border-color: #00a8e8; outline: none; box-shadow: 0 0 0 2px rgba(0,168,232,0.2); }
        textarea.form-control { min-height: 120px; resize: vertical; }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, #00a8e8, #006994);
            color: white;
            padding: 14px 28px;
            border: none;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 4px 10px rgba(0,168,232,0.3);
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(0,168,232,0.4);
            background: linear-gradient(to right, #0096d6, #005a7a);
        }
        .rating-widget { text-align: center; }
        .stars { margin: 15px 0; }
        .star { font-size: 2rem; color: #ddd; cursor: pointer; margin: 0 5px; transition: color 0.2s, transform 0.2s; }
        .star:hover, .star.active { color: #ffc107; transform: scale(1.2); }
        .comment { border-bottom: 1px solid #eee; padding: 20px 0; }
        .comment:last-child { border-bottom: none; }
        .comment-author { font-weight: bold; color: #006994; }
        .comment-date { font-size: 0.85rem; color: #888; margin-left: 10px; }
        .comment-text { margin-top: 10px; }
        .article-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            margin: 25px auto;
            display: block;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            border: 3px solid #e3f2fd;
            transition: transform 0.5s;
        }
        .article-img:hover { transform: scale(1.01); }
        .highlight-box {
            background: linear-gradient(135deg, #e3f2fd, #bbdefb);
            border-left: 5px solid #00a8e8;
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 12px 12px 0;
        }
        .link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            list-style: none;
            margin: 25px 0;
        }
        .link-list a {
            background: #e3f2fd;
            padding: 12px 20px;
            border-radius: 50px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .link-list a:hover { background: #bbdefb; }
        .update-time {
            display: inline-block;
            background: #ffebee;
            color: #c62828;
            padding: 10px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin: 20px 0;
        }
        footer {
            grid-area: footer;
            background: linear-gradient(135deg, #006994, #023e8a);
            color: white;
            padding: 40px 30px;
            border-radius: 15px 15px 0 0;
            margin-top: 40px;
            text-align: center;
        }
        friend-link {
            display: block;
            margin: 20px 0;
            font-size: 1.1rem;
        }
        friend-link a { color: #80d8ff; border-bottom: 1px dashed #80d8ff; padding-bottom: 2px; }
        friend-link a:hover { color: white; border-bottom-color: white; }
        .copyright {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #bbdefb;
        }
        .text-center { text-align: center; }
        .mt-4 { margin-top: 2rem; }
        .mb-4 { margin-bottom: 2rem; }
        .py-3 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
        .emoji { font-size: 1.2em; margin: 0 3px; }