*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f5f7fa;
            color: #1e293b;
            line-height: 1.8;
            padding: 0;
            margin: 0;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1d4ed8;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            margin-top: 1.2em;
            margin-bottom: 0.5em;
            color: #0f172a;
        }
        h1 {
            font-size: 2.2rem;
            margin-top: 0.5em;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #f59e0b;
            padding-left: 0.75rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.2rem;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        header {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #f59e0b;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
            transition: transform 0.2s;
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
            color: #fbbf24;
        }
        .my-logo span {
            color: #fff;
            font-weight: 300;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        nav a {
            color: #e2e8f0;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.4rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: all 0.2s;
        }
        nav a:hover {
            color: #f59e0b;
            border-bottom-color: #f59e0b;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.6rem;
            cursor: pointer;
            color: #fff;
            background: none;
            border: none;
            padding: 0.2rem 0.5rem;
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 0.6rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #94a3b8;
            margin-right: 0.6rem;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb .current {
            color: #475569;
            font-weight: 600;
        }
        .search-bar {
            background: #fff;
            padding: 1.5rem 0;
            border-bottom: 1px solid #e2e8f0;
        }
        .search-bar form {
            display: flex;
            gap: 0.6rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-bar input {
            flex: 1;
            padding: 0.8rem 1.2rem;
            border: 2px solid #e2e8f0;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.2s;
        }
        .search-bar input:focus {
            border-color: #f59e0b;
        }
        .search-bar button {
            background: #f59e0b;
            color: #fff;
            border: none;
            padding: 0 1.6rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-bar button:hover {
            background: #d97706;
        }
        main {
            padding: 2rem 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2rem;
        }
        .article-body {
            background: #fff;
            padding: 2rem 2.2rem;
            border-radius: 18px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
        }
        .sidebar {
            background: #fff;
            padding: 1.8rem 1.5rem;
            border-radius: 18px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
            height: fit-content;
            position: sticky;
            top: 90px;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #f59e0b;
            padding-bottom: 0.4rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f1f5f9;
        }
        .sidebar li a {
            font-weight: 500;
        }
        .featured-image {
            margin: 1.8rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .featured-image img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .featured-image figcaption {
            background: #f8fafc;
            padding: 0.6rem 1rem;
            font-size: 0.9rem;
            color: #64748b;
            text-align: center;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 0.8rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e2e8f0;
        }
        th {
            background: #0f172a;
            color: #fff;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f8fafc;
        }
        .comment-section,
        .rating-section {
            background: #fff;
            padding: 2rem 2.2rem;
            border-radius: 18px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
            margin-top: 2rem;
        }
        .comment-section h2,
        .rating-section h2 {
            margin-top: 0;
        }
        .comment-section form,
        .rating-section form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1rem;
        }
        .comment-section input,
        .comment-section textarea,
        .rating-section select,
        .rating-section button {
            padding: 0.8rem 1.2rem;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            outline: none;
            transition: border-color 0.2s;
        }
        .comment-section input:focus,
        .comment-section textarea:focus,
        .rating-section select:focus {
            border-color: #f59e0b;
        }
        .comment-section textarea {
            min-height: 120px;
            resize: vertical;
        }
        .comment-section button,
        .rating-section button {
            background: #0f172a;
            color: #fff;
            border: none;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            align-self: flex-start;
            padding: 0.8rem 2rem;
            border-radius: 50px;
        }
        .comment-section button:hover,
        .rating-section button:hover {
            background: #1e293b;
        }
        .rating-section select {
            max-width: 200px;
        }
        .star-display {
            color: #f59e0b;
            font-size: 1.4rem;
            letter-spacing: 2px;
        }
        footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
        }
        footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        footer h4 {
            color: #f59e0b;
            margin-top: 0;
            font-size: 1.1rem;
        }
        footer a {
            color: #94a3b8;
        }
        footer a:hover {
            color: #f59e0b;
        }
        friend-link {
            display: block;
            padding: 1.2rem 0 0.6rem;
            border-top: 1px solid #1e293b;
            margin-top: 1.2rem;
            grid-column: 1 / -1;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.8rem 0.2rem 0;
        }
        .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 1.2rem;
            border-top: 1px solid #1e293b;
            font-size: 0.9rem;
            color: #64748b;
        }
        .last-update {
            color: #94a3b8;
            font-size: 0.85rem;
            margin-top: 0.5rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            footer .container {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            header .container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.4rem;
                padding: 0.8rem 0 0.4rem;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                margin-top: 0.6rem;
            }
            #nav-toggle:checked~nav {
                display: flex;
            }
            nav a {
                padding: 0.6rem 0.4rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .article-body {
                padding: 1.2rem 1rem;
            }
            .comment-section,
            .rating-section {
                padding: 1.2rem 1rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            footer .container {
                grid-template-columns: 1fr;
            }
            .search-bar form {
                flex-direction: column;
            }
            .search-bar button {
                justify-content: center;
                padding: 0.8rem;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.3rem;
            }
            .breadcrumb ol {
                font-size: 0.8rem;
            }
            .featured-image figcaption {
                font-size: 0.8rem;
            }
            table {
                font-size: 0.85rem;
            }
            th,
            td {
                padding: 0.5rem 0.6rem;
            }
        }
        .text-highlight {
            background: linear-gradient(to right, #f59e0b22, #f59e0b11);
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .badge {
            display: inline-block;
            background: #f59e0b;
            color: #0f172a;
            padding: 0.1rem 0.8rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }
        .divider {
            height: 3px;
            background: linear-gradient(90deg, #f59e0b, #fbbf24, #f59e0b);
            width: 80px;
            margin: 1rem 0 1.8rem;
            border-radius: 4px;
        }
        .emoji-big {
            font-size: 1.6rem;
            line-height: 1;
        }
        .btn-back-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #0f172a;
            color: #f59e0b;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            transition: transform 0.2s, background 0.2s;
            z-index: 999;
            border: none;
            cursor: pointer;
        }
        .btn-back-top:hover {
            transform: translateY(-4px);
            background: #1e293b;
            color: #fbbf24;
        }
        .schema-hidden {
            display: none;
        }