* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
            background: #f5f7fa;
            color: #1a1a2e;
            line-height: 1.7;
            font-size: 16px;
            scroll-behavior: smooth;
        }
        a {
            color: #e63946;
            text-decoration: none;
            transition: color 0.25s;
        }
        a:hover {
            color: #b71c1c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            color: #fff;
            padding: 16px 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: 24px;
            font-weight: 900;
            letter-spacing: -0.5px;
            color: #f1c40f;
            text-shadow: 0 2px 8px rgba(241, 196, 15, 0.3);
            transition: transform 0.3s;
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
            color: #f1c40f;
        }
        .my-logo i {
            margin-right: 6px;
            color: #e63946;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        nav a {
            color: #e0e0e0;
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 500;
            transition: background 0.3s, color 0.3s;
        }
        nav a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f1c40f;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 22px;
            padding: 6px 12px;
            border-radius: 6px;
            cursor: pointer;
            transition: border 0.3s;
        }
        .hamburger:hover {
            border-color: #f1c40f;
        }
        #navToggle {
            display: none;
        }
        #navToggle:checked~nav {
            display: flex;
            flex-direction: column;
            width: 100%;
            margin-top: 12px;
            background: rgba(22, 33, 62, 0.98);
            padding: 12px 0;
            border-radius: 12px;
        }
        #navToggle:checked~nav a {
            padding: 10px 20px;
            width: 100%;
        }
        .breadcrumb {
            background: #fff;
            padding: 12px 0;
            border-bottom: 1px solid #e9ecef;
            font-size: 13px;
            color: #6c757d;
        }
        .breadcrumb .container {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb a {
            color: #e63946;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: #6c757d;
        }
        main {
            padding: 40px 0 60px;
        }
        main .container {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        .content {
            background: #fff;
            border-radius: 16px;
            padding: 36px 36px 50px;
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.05);
        }
        .sidebar {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 2px 24px rgba(0, 0, 0, 0.05);
            height: fit-content;
            position: sticky;
            top: 90px;
        }
        h1 {
            font-size: 34px;
            font-weight: 900;
            color: #1a1a2e;
            margin-bottom: 12px;
            line-height: 1.25;
            letter-spacing: -0.5px;
        }
        h1 i {
            color: #f1c40f;
        }
        .last-updated {
            display: block;
            font-size: 13px;
            color: #6c757d;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 2px solid #f1f3f5;
        }
        .last-updated i {
            margin-right: 4px;
        }
        h2 {
            font-size: 26px;
            font-weight: 800;
            color: #1a1a2e;
            margin-top: 44px;
            margin-bottom: 14px;
            padding-bottom: 8px;
            border-bottom: 3px solid #f1c40f;
            display: inline-block;
        }
        h3 {
            font-size: 20px;
            font-weight: 700;
            color: #2d3436;
            margin-top: 32px;
            margin-bottom: 10px;
        }
        h4 {
            font-size: 17px;
            font-weight: 600;
            color: #2d3436;
            margin-top: 24px;
            margin-bottom: 8px;
        }
        p {
            margin-bottom: 18px;
            color: #2d3436;
        }
        .featured-image {
            margin: 28px 0 32px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
        }
        .featured-image img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 12px 16px;
            background: #f8f9fa;
            font-size: 13px;
            color: #6c757d;
            text-align: center;
        }
        .highlight-box {
            background: linear-gradient(135deg, #fff8e1, #fff3cd);
            border-left: 5px solid #f1c40f;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .highlight-box strong {
            color: #1a1a2e;
        }
        .tip-card {
            background: #f0f4ff;
            border-radius: 12px;
            padding: 20px 24px;
            margin: 18px 0;
            border: 1px solid #d0d9f0;
        }
        .tip-card i {
            color: #e63946;
            margin-right: 8px;
        }
        .link-list {
            list-style: none;
            padding: 0;
            margin: 16px 0 20px;
        }
        .link-list li {
            padding: 8px 0;
            border-bottom: 1px solid #f1f3f5;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .link-list li i {
            color: #f1c40f;
            font-size: 14px;
            width: 20px;
        }
        .link-list li a {
            font-weight: 500;
        }
        blockquote {
            background: #f8f9fa;
            border-left: 5px solid #e63946;
            padding: 20px 24px;
            margin: 24px 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2d3436;
        }
        blockquote cite {
            display: block;
            margin-top: 10px;
            font-style: normal;
            font-weight: 600;
            color: #1a1a2e;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            border-radius: 12px;
            overflow: hidden;
        }
        table th {
            background: #1a1a2e;
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        table td {
            padding: 12px 16px;
            border-bottom: 1px solid #e9ecef;
        }
        table tr:nth-child(even) {
            background: #f8f9fa;
        }
        table tr:hover {
            background: #fff3cd;
        }
        .sidebar h3 {
            font-size: 18px;
            margin-top: 0;
            margin-bottom: 16px;
            color: #1a1a2e;
            border-bottom: 2px solid #f1c40f;
            padding-bottom: 8px;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar ul li {
            padding: 8px 0;
            border-bottom: 1px solid #f1f3f5;
        }
        .sidebar ul li a {
            font-size: 14px;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar ul li a i {
            color: #f1c40f;
            font-size: 12px;
        }
        .search-box {
            background: #f8f9fa;
            border-radius: 12px;
            padding: 20px;
            margin: 24px 0;
            border: 1px solid #e9ecef;
        }
        .search-box h3 {
            margin-top: 0;
            font-size: 18px;
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 15px;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input:focus {
            border-color: #f1c40f;
        }
        .search-form button {
            padding: 12px 24px;
            background: #e63946;
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
        }
        .search-form button:hover {
            background: #b71c1c;
            transform: scale(1.02);
        }
        .feedback-section {
            margin-top: 44px;
            padding-top: 32px;
            border-top: 3px solid #f1f3f5;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin-top: 20px;
        }
        .comment-box,
        .rating-box {
            background: #f8f9fa;
            border-radius: 12px;
            padding: 24px;
            border: 1px solid #e9ecef;
        }
        .comment-box h3,
        .rating-box h3 {
            margin-top: 0;
            font-size: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comment-box textarea,
        .rating-box textarea {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 15px;
            font-family: inherit;
            outline: none;
            resize: vertical;
            min-height: 90px;
            transition: border 0.3s;
            margin-bottom: 12px;
        }
        .comment-box textarea:focus,
        .rating-box textarea:focus {
            border-color: #f1c40f;
        }
        .comment-box input,
        .rating-box input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 15px;
            outline: none;
            transition: border 0.3s;
            margin-bottom: 12px;
        }
        .comment-box input:focus,
        .rating-box input:focus {
            border-color: #f1c40f;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 28px;
            margin-bottom: 14px;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #ddd;
            transition: color 0.2s, transform 0.2s;
            cursor: pointer;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f1c40f;
            transform: scale(1.1);
        }
        .btn-submit {
            padding: 12px 28px;
            background: #1a1a2e;
            color: #fff;
            border: none;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            width: 100%;
        }
        .btn-submit:hover {
            background: #e63946;
            transform: scale(1.01);
        }
        footer {
            background: #1a1a2e;
            color: #e0e0e0;
            padding: 40px 0 20px;
        }
        footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        footer h4 {
            color: #f1c40f;
            font-size: 16px;
            margin-bottom: 14px;
            border-bottom: 2px solid rgba(241, 196, 15, 0.3);
            padding-bottom: 6px;
            display: inline-block;
        }
        footer a {
            color: #b0b0b0;
            transition: color 0.3s;
        }
        footer a:hover {
            color: #f1c40f;
            text-decoration: underline;
        }
        friend-link {
            display: block;
            margin-top: 8px;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            font-size: 14px;
        }
        .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 24px;
            margin-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 13px;
            color: #888;
        }
        .copyright strong {
            color: #f1c40f;
        }
        @media (max-width: 992px) {
            main .container {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .content {
                order: 1;
            }
            footer .container {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
            }
            #navToggle:checked~nav {
                display: flex;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            footer .container {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            h1 {
                font-size: 26px;
            }
            h2 {
                font-size: 22px;
            }
            .content {
                padding: 20px 16px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .my-logo {
                font-size: 18px;
            }
            .star-rating {
                font-size: 24px;
            }
        }
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: #f1f3f5;
        }
        ::-webkit-scrollbar-thumb {
            background: #c0c0c0;
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #a0a0a0;
        }
        .text-muted {
            color: #6c757d;
            font-size: 14px;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mt-0 {
            margin-top: 0;
        }