* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f5f7fa;
            color: #1a2634;
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: #0077b6;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #023e8a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1a2e, #1a3a5c);
            color: #fff;
            padding: 16px 0;
            border-bottom: 4px solid #f4a261;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 28px;
            font-weight: 800;
            letter-spacing: 1px;
            background: linear-gradient(135deg, #f4a261, #e76f51);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 12px rgba(244, 162, 97, 0.3);
        }
        .my-logo i {
            margin-right: 6px;
            -webkit-text-fill-color: #f4a261;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-size: 24px;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            border-color: #f4a261;
            color: #f4a261;
        }
        .nav-menu {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-menu a {
            color: #f0f4f8;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 15px;
            font-weight: 500;
            transition: 0.2s;
            white-space: nowrap;
        }
        .nav-menu a:hover {
            background: rgba(244, 162, 97, 0.2);
            color: #f4a261;
            text-decoration: none;
        }
        .nav-menu a i {
            margin-right: 6px;
            font-size: 14px;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 12px 0;
            font-size: 14px;
            border-bottom: 1px solid #dce1e8;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 8px;
            color: #7a8a9e;
        }
        .breadcrumb a {
            color: #2a4a6a;
        }
        .breadcrumb .current {
            color: #6c757d;
            font-weight: 500;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        .article-body h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #0b1a2e;
        }
        .article-body h1 i {
            color: #f4a261;
            margin-right: 10px;
        }
        .article-body h2 {
            font-size: 28px;
            font-weight: 700;
            margin-top: 48px;
            margin-bottom: 16px;
            color: #1a3a5c;
            border-left: 6px solid #f4a261;
            padding-left: 18px;
        }
        .article-body h3 {
            font-size: 22px;
            font-weight: 600;
            margin-top: 32px;
            margin-bottom: 12px;
            color: #1f4a6e;
        }
        .article-body h4 {
            font-size: 18px;
            font-weight: 600;
            margin-top: 24px;
            margin-bottom: 8px;
            color: #2a5a7e;
        }
        .article-body p {
            margin-bottom: 20px;
            font-size: 16px;
            color: #2c3e50;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 20px;
            padding-left: 28px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body .feature-box {
            background: #f0f6fc;
            border-left: 6px solid #f4a261;
            padding: 20px 24px;
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .article-body .feature-box strong {
            color: #0b1a2e;
        }
        .article-img {
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            margin: 28px 0;
            width: 100%;
        }
        .article-img-caption {
            font-size: 14px;
            color: #6c757d;
            text-align: center;
            margin-top: -16px;
            margin-bottom: 28px;
        }
        .highlight {
            background: #fff3e0;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .btn-link {
            display: inline-block;
            background: #f4a261;
            color: #0b1a2e;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: 30px;
            transition: 0.2s;
            margin: 4px 0;
        }
        .btn-link:hover {
            background: #e76f51;
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(231, 111, 81, 0.3);
        }
        .btn-link i {
            margin-right: 8px;
        }
        .link-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 20px 0;
        }
        .link-list a {
            background: #fff;
            border: 1px solid #dce1e8;
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            transition: 0.2s;
        }
        .link-list a:hover {
            background: #f4a261;
            color: #fff;
            border-color: #f4a261;
            text-decoration: none;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border: 1px solid #eef2f6;
        }
        .sidebar-card h3 {
            font-size: 20px;
            margin-bottom: 14px;
            color: #0b1a2e;
            border-bottom: 2px solid #f4a261;
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            padding: 6px 0;
            border-bottom: 1px solid #f0f2f5;
        }
        .sidebar-card li:last-child {
            border-bottom: none;
        }
        .sidebar-card a {
            font-weight: 500;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 10px 16px;
            border: 2px solid #dce1e8;
            border-radius: 30px;
            font-size: 14px;
            outline: none;
            transition: 0.2s;
        }
        .search-form input:focus {
            border-color: #f4a261;
            box-shadow: 0 0 0 4px rgba(244, 162, 97, 0.15);
        }
        .search-form button {
            background: #f4a261;
            border: none;
            border-radius: 30px;
            padding: 10px 20px;
            color: #0b1a2e;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
        }
        .search-form button:hover {
            background: #e76f51;
            color: #fff;
        }
        .comment-section,
        .rating-section {
            background: #fff;
            border-radius: 16px;
            padding: 28px 32px;
            margin-top: 40px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border: 1px solid #eef2f6;
        }
        .comment-section h2,
        .rating-section h2 {
            font-size: 24px;
            margin-bottom: 16px;
            color: #0b1a2e;
            border-left: 6px solid #f4a261;
            padding-left: 16px;
        }
        .comment-form textarea,
        .comment-form input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #dce1e8;
            border-radius: 12px;
            font-size: 15px;
            margin-bottom: 12px;
            font-family: inherit;
            transition: 0.2s;
        }
        .comment-form textarea:focus,
        .comment-form input:focus {
            border-color: #f4a261;
            box-shadow: 0 0 0 4px rgba(244, 162, 97, 0.1);
            outline: none;
        }
        .comment-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .comment-form .form-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .comment-form .form-row input {
            flex: 1;
            min-width: 180px;
        }
        .comment-form button {
            background: #f4a261;
            border: none;
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: 0.2s;
            color: #0b1a2e;
        }
        .comment-form button:hover {
            background: #e76f51;
            color: #fff;
            transform: translateY(-2px);
        }
        .rating-stars {
            display: flex;
            gap: 8px;
            font-size: 32px;
            cursor: pointer;
            margin: 12px 0 18px;
        }
        .rating-stars i {
            color: #dce1e8;
            transition: 0.2s;
        }
        .rating-stars i.active,
        .rating-stars i:hover,
        .rating-stars i:hover~i {
            color: #f4a261;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .rating-form button {
            background: #f4a261;
            border: none;
            padding: 10px 28px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
        }
        .rating-form button:hover {
            background: #e76f51;
            color: #fff;
        }
        .site-footer {
            background: #0b1a2e;
            color: #d0d8e0;
            padding: 48px 0 24px;
            margin-top: 60px;
            border-top: 4px solid #f4a261;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-grid h4 {
            color: #f4a261;
            font-size: 18px;
            margin-bottom: 12px;
        }
        .footer-grid a {
            color: #b0c4d8;
            display: block;
            padding: 4px 0;
            font-size: 14px;
        }
        .footer-grid a:hover {
            color: #f4a261;
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid #1f3a5c;
            padding-top: 20px;
            text-align: center;
            font-size: 14px;
            color: #7a8a9e;
        }
        .footer-bottom .copyright {
            margin-top: 8px;
        }
        friend-link {
            display: block;
            margin: 12px 0;
            font-size: 14px;
        }
        friend-link a {
            color: #b0c4d8;
            margin: 0 6px;
        }
        friend-link a:hover {
            color: #f4a261;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding-top: 16px;
                gap: 4px;
            }
            .nav-menu.show {
                display: flex;
            }
            .nav-menu a {
                width: 100%;
                padding: 10px 16px;
                border-radius: 8px;
            }
            .main-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .article-body h1 {
                font-size: 26px;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .sidebar {
                order: -1;
            }
            .comment-form .form-row {
                flex-direction: column;
            }
            .header-inner {
                gap: 12px;
            }
            .my-logo {
                font-size: 22px;
            }
            .rating-stars {
                font-size: 28px;
            }
            .container {
                padding: 0 14px;
            }
            .comment-section,
            .rating-section {
                padding: 20px 18px;
            }
        }
        @media (max-width: 480px) {
            .article-body h1 {
                font-size: 22px;
            }
            .article-body h2 {
                font-size: 19px;
            }
            .btn-link {
                padding: 8px 18px;
                font-size: 14px;
            }
            .link-list a {
                font-size: 13px;
                padding: 4px 12px;
            }
        }
        html {
            scroll-behavior: smooth;
        }
        .last-updated {
            font-size: 14px;
            color: #6c757d;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .last-updated i {
            color: #f4a261;
        }