* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f4f7f6;
            color: #1e2a3a;
            line-height: 1.7;
            font-size: 16px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0f3b2c, #1a6b4a);
            color: #fff;
            padding: 16px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 900;
            letter-spacing: 1px;
            color: #f7d44a;
            text-shadow: 2px 2px 0 #b8860b;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            font-size: 2rem;
            color: #f7d44a;
        }
        .my-logo:hover {
            color: #ffe77a;
            transform: scale(1.02);
            transition: 0.3s;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .main-nav {
            display: flex;
            gap: 10px;
            list-style: none;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #eaf6ef;
            text-decoration: none;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 30px;
            transition: 0.3s;
            font-size: 0.95rem;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.2);
            color: #f7d44a;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            color: #f7d44a;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 8px;
            transition: 0.3s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        .breadcrumb {
            background: #e8f0ec;
            padding: 12px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0ddd6;
        }
        .breadcrumb-inner {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: #1a6b4a;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: #4a6a5a;
        }
        .breadcrumb .separator {
            color: #8aa89a;
        }
        main {
            padding: 36px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        .article-body h1 {
            font-size: 2.6rem;
            color: #0f3b2c;
            margin-bottom: 12px;
            line-height: 1.2;
            font-weight: 800;
        }
        .article-body h1 i {
            color: #f7d44a;
            margin-right: 12px;
        }
        .last-updated {
            display: inline-block;
            background: #1a6b4a;
            color: #fff;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            margin-bottom: 28px;
            letter-spacing: 0.3px;
        }
        .last-updated i {
            margin-right: 6px;
        }
        .featured-image {
            width: 100%;
            border-radius: 18px;
            margin: 24px 0 32px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            display: block;
            max-height: 500px;
            object-fit: cover;
            background: #dce8e1;
        }
        .article-body h2 {
            font-size: 2rem;
            color: #0f3b2c;
            margin-top: 48px;
            margin-bottom: 16px;
            border-left: 6px solid #f7d44a;
            padding-left: 18px;
        }
        .article-body h3 {
            font-size: 1.5rem;
            color: #1a5a3e;
            margin-top: 32px;
            margin-bottom: 12px;
            font-weight: 600;
        }
        .article-body h4 {
            font-size: 1.2rem;
            color: #2a6a4e;
            margin-top: 24px;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .article-body p {
            margin-bottom: 18px;
            color: #2c3e4e;
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 24px 24px;
            color: #2c3e4e;
        }
        .article-body li {
            margin-bottom: 10px;
        }
        .article-body strong {
            color: #0f3b2c;
            font-weight: 700;
        }
        .highlight-box {
            background: linear-gradient(135deg, #faf8ed, #f5f0d7);
            border-left: 6px solid #f7d44a;
            border-radius: 12px;
            padding: 24px 28px;
            margin: 28px 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .code-table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0 32px;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }
        .code-table th {
            background: #0f3b2c;
            color: #f7d44a;
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
        }
        .code-table td {
            padding: 12px 18px;
            border-bottom: 1px solid #dce8e1;
            background: #fff;
        }
        .code-table tr:last-child td {
            border-bottom: none;
        }
        .code-table tr:hover td {
            background: #f5faf7;
        }
        .code-badge {
            background: #1a6b4a;
            color: #fff;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
        }
        .code-badge.active {
            background: #2e8b57;
        }
        .code-badge.expired {
            background: #b5655a;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px 22px;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.06);
        }
        .sidebar-card h3 {
            font-size: 1.3rem;
            color: #0f3b2c;
            margin-bottom: 16px;
            border-bottom: 2px solid #e8f0ec;
            padding-bottom: 10px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card ul li {
            margin-bottom: 12px;
        }
        .sidebar-card ul li a {
            color: #1a6b4a;
            text-decoration: none;
            font-weight: 500;
            transition: 0.3s;
            display: block;
            padding: 6px 0;
            border-bottom: 1px solid #f0f5f2;
        }
        .sidebar-card ul li a:hover {
            color: #f7d44a;
            padding-left: 6px;
        }
        .sidebar-card ul li a i {
            margin-right: 10px;
            color: #f7d44a;
            font-size: 0.9rem;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 6px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #dce8e1;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.3s;
        }
        .search-form input:focus {
            border-color: #1a6b4a;
            box-shadow: 0 0 0 3px rgba(26, 107, 74, 0.15);
        }
        .search-form button {
            background: #1a6b4a;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 12px 22px;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.3s;
        }
        .search-form button:hover {
            background: #0f3b2c;
            transform: scale(1.03);
        }
        .comment-section,
        .rating-section {
            background: #fff;
            border-radius: 16px;
            padding: 28px 26px;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.06);
            margin-top: 40px;
        }
        .comment-section h3,
        .rating-section h3 {
            font-size: 1.6rem;
            color: #0f3b2c;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .comment-section h3 i,
        .rating-section h3 i {
            color: #f7d44a;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 6px;
            color: #1e2a3a;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #dce8e1;
            border-radius: 12px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.3s;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #1a6b4a;
            box-shadow: 0 0 0 3px rgba(26, 107, 74, 0.12);
        }
        .form-group textarea {
            min-height: 110px;
            resize: vertical;
        }
        .btn-submit {
            background: #1a6b4a;
            color: #fff;
            border: none;
            padding: 14px 34px;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-submit:hover {
            background: #0f3b2c;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 107, 74, 0.3);
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            margin: 8px 0 16px;
        }
        .star-rating i {
            transition: 0.2s;
        }
        .star-rating i.active,
        .star-rating i:hover {
            color: #f7d44a;
        }
        .site-footer {
            background: #0f3b2c;
            color: #d4e8de;
            padding: 44px 0 30px;
            margin-top: 40px;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-col h4 {
            color: #f7d44a;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }
        .footer-col p {
            font-size: 0.95rem;
            line-height: 1.6;
            color: #bcd5c8;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: #bcd5c8;
            text-decoration: none;
            font-size: 0.95rem;
            transition: 0.3s;
        }
        .footer-col ul li a:hover {
            color: #f7d44a;
            padding-left: 4px;
        }
        friend-link {
            display: block;
            margin-top: 28px;
            padding-top: 24px;
            border-top: 1px solid #2a5a44;
            font-size: 0.95rem;
            color: #bcd5c8;
        }
        friend-link a {
            color: #f7d44a;
            text-decoration: none;
            margin: 0 6px;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #2a5a44;
            font-size: 0.9rem;
            color: #8aaa9a;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(15, 59, 44, 0.98);
                padding: 16px 0 20px;
                border-radius: 0 0 16px 16px;
                margin-top: 12px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 20px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .nav-wrapper {
                flex-wrap: wrap;
                justify-content: flex-end;
            }
            .article-body h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .code-table {
                font-size: 0.85rem;
            }
            .code-table th,
            .code-table td {
                padding: 10px 12px;
            }
            .sidebar {
                order: 2;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo i {
                font-size: 1.4rem;
            }
            .container {
                padding: 0 14px;
            }
            .article-body h1 {
                font-size: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
            }
            .star-rating {
                font-size: 1.6rem;
            }
        }