* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            background: #f7f7f9;
            color: #1a1a2e;
            line-height: 1.75;
        }
        a {
            color: #E2231A;
            text-decoration: none;
            transition: color .2s;
        }
        a:hover {
            color: #a3130f;
            text-decoration: underline;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 16px;
        }
        header {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            box-shadow: 0 4px 20px rgba(0, 0, 0, .15);
            position: sticky;
            top: 0;
            z-index: 999;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 0;
            gap: 20px;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 900;
            letter-spacing: -1px;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo span {
            color: #E2231A;
        }
        .my-logo:hover {
            text-decoration: none;
            transform: scale(1.02);
        }
        .nav-links {
            display: flex;
            gap: 24px;
            list-style: none;
        }
        .nav-links li a {
            color: #e0e0e0;
            font-weight: 600;
            font-size: .92rem;
            padding: 8px 4px;
            border-bottom: 2px solid transparent;
            transition: all .3s;
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: #fff;
            border-bottom-color: #E2231A;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: #fff;
            cursor: pointer;
            padding: 4px 8px;
        }
        .breadcrumb {
            background: #fff;
            border-bottom: 1px solid #eee;
            padding: 10px 0;
            font-size: .85rem;
            color: #666;
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: #E2231A;
        }
        .breadcrumb .sep {
            color: #bbb;
        }
        .main-wrap {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
            padding: 32px 16px;
        }
        .article-body {
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 2px 20px rgba(0, 0, 0, .05);
            padding: 36px 42px;
            font-size: .97rem;
        }
        .article-body h1 {
            font-size: 2.15rem;
            line-height: 1.25;
            color: #1a1a2e;
            margin-bottom: 16px;
            font-weight: 800;
        }
        .article-body h2 {
            font-size: 1.55rem;
            color: #0f3460;
            margin-top: 40px;
            margin-bottom: 14px;
            border-left: 4px solid #E2231A;
            padding-left: 14px;
        }
        .article-body h3 {
            font-size: 1.18rem;
            color: #16213e;
            margin-top: 26px;
            margin-bottom: 10px;
            font-weight: 700;
        }
        .article-body h4 {
            font-size: 1rem;
            color: #333;
            margin-top: 18px;
            font-weight: 700;
        }
        .article-body p {
            margin-bottom: 16px;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 16px 24px;
        }
        .article-body li {
            margin-bottom: 6px;
        }
        .update-badge {
            display: inline-block;
            background: #ffecec;
            color: #E2231A;
            font-size: .78rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: .3px;
            margin-bottom: 18px;
        }
        .last-updated {
            font-size: .8rem;
            color: #999;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .code-table-wrap {
            overflow-x: auto;
            margin: 20px 0;
            border-radius: 10px;
            box-shadow: 0 1px 4px rgba(0, 0, 0, .08);
        }
        .code-table {
            width: 100%;
            border-collapse: collapse;
            font-size: .9rem;
            min-width: 580px;
        }
        .code-table th {
            background: #0f3460;
            color: #fff;
            padding: 12px 14px;
            text-align: left;
            font-weight: 600;
            letter-spacing: .4px;
            font-size: .82rem;
            text-transform: uppercase;
        }
        .code-table td {
            padding: 12px 14px;
            border-bottom: 1px solid #f0f0f0;
        }
        .code-table tbody tr:hover {
            background: #faf6f6;
        }
        .badge-active {
            background: #27ae60;
            color: #fff;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: .72rem;
            font-weight: 700;
            display: inline-block;
        }
        .badge-expired {
            background: #e0e0e0;
            color: #666;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: .72rem;
            font-weight: 700;
            display: inline-block;
        }
        .cta-box {
            background: linear-gradient(135deg, #0f3460, #1a1a2e);
            color: #fff;
            border-radius: 12px;
            padding: 24px;
            margin: 24px 0;
            text-align: center;
        }
        .cta-box i {
            font-size: 2rem;
            color: #ffd166;
            margin-bottom: 8px;
        }
        .cta-box a {
            color: #ffd166;
            font-weight: 700;
            border-bottom: 1px dotted #ffd166;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 22px;
        }
        .widget {
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 2px 14px rgba(0, 0, 0, .06);
            padding: 24px;
        }
        .widget-title {
            font-size: 1.05rem;
            font-weight: 800;
            color: #0f3460;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .widget-title i {
            color: #E2231A;
        }
        .search-form {
            display: flex;
            gap: 8px;
        }
        .search-form input[type="text"] {
            flex: 1;
            padding: 10px 14px;
            border: 2px solid #e8e8e8;
            border-radius: 30px;
            font-size: .88rem;
            outline: none;
            transition: border-color .3s;
        }
        .search-form input[type="text"]:focus {
            border-color: #E2231A;
        }
        .search-form button {
            background: #E2231A;
            color: #fff;
            border: none;
            border-radius: 50%;
            width: 42px;
            height: 42px;
            cursor: pointer;
            font-size: .95rem;
            transition: background .3s;
        }
        .search-form button:hover {
            background: #a3130f;
        }
        .rating-stars {
            display: flex;
            gap: 4px;
            justify-content: center;
            font-size: 1.4rem;
            color: #ccc;
            margin: 12px 0;
            cursor: pointer;
        }
        .rating-stars i {
            transition: color .2s, transform .2s;
        }
        .rating-stars i:hover {
            color: #ffd166;
            transform: scale(1.2);
        }
        .rating-stars i.selected {
            color: #ffd166;
        }
        .score-btn {
            background: #E2231A;
            color: #fff;
            border: none;
            border-radius: 20px;
            padding: 8px 24px;
            font-size: .85rem;
            cursor: pointer;
            width: 100%;
            transition: background .3s;
        }
        .score-btn:hover {
            background: #a3130f;
        }
        .comment-form textarea {
            width: 100%;
            padding: 10px;
            border: 2px solid #e8e8e8;
            border-radius: 10px;
            font-size: .88rem;
            min-height: 90px;
            margin-bottom: 10px;
            resize: vertical;
            outline: none;
            font-family: inherit;
        }
        .comment-form textarea:focus {
            border-color: #E2231A;
        }
        .comment-form input[type="text"] {
            width: 100%;
            padding: 8px 10px;
            border: 2px solid #e8e8e8;
            border-radius: 10px;
            font-size: .85rem;
            margin-bottom: 10px;
            outline: none;
        }
        .comment-form input[type="text"]:focus {
            border-color: #E2231A;
        }
        .comment-btn,
        .submit-btn {
            background: #0f3460;
            color: #fff;
            border: none;
            border-radius: 20px;
            padding: 8px 24px;
            font-size: .85rem;
            cursor: pointer;
            transition: background .3s;
            width: 100%;
        }
        .comment-btn:hover {
            background: #16213e;
        }
        footer {
            background: #14142b;
            color: #a0a0b8;
            padding: 40px 0 20px;
            margin-top: 40px;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-bottom: 28px;
        }
        footer h4 {
            color: #fff;
            margin-bottom: 12px;
            font-size: .95rem;
        }
        footer a {
            color: #a0a0b8;
        }
        footer a:hover {
            color: #fff;
            text-decoration: none;
        }
        friend-link {
            display: block;
            border-top: 1px solid #2a2a4a;
            padding: 20px 0;
            font-size: .82rem;
            line-height: 1.8;
            word-break: break-all;
        }
        friend-link a {
            margin: 0 8px;
        }
        .copyright {
            text-align: center;
            font-size: .78rem;
            color: #6a6a88;
            border-top: 1px solid #22223a;
            padding-top: 16px;
            margin-top: 16px;
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 8px;
                padding: 12px 0;
            }
            .nav-links.open {
                display: flex;
            }
            .hamburger {
                display: block;
                margin-left: auto;
            }
            .main-wrap {
                grid-template-columns: 1fr;
                padding: 16px;
            }
            .article-body {
                padding: 24px 18px;
            }
            .article-body h1 {
                font-size: 1.65rem;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 480px) {
            .article-body {
                padding: 18px 14px;
            }
            .code-table {
                font-size: .8rem;
            }
        }
        img.featured-image {
            width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 20px 0;
            box-shadow: 0 4px 16px rgba(0, 0, 0, .1);
        }
        .featured-caption {
            font-size: .8rem;
            color: #999;
            text-align: center;
            margin-top: -14px;
            margin-bottom: 18px;
        }
        .tip-box {
            background: #f0f7ff;
            border-left: 4px solid #0f3460;
            padding: 12px 16px;
            border-radius: 0 8px 8px 0;
            margin: 16px 0;
            font-size: .9rem;
        }
        .warning-box {
            background: #fff8e6;
            border-left: 4px solid #f39c12;
            padding: 12px 16px;
            border-radius: 0 8px 8px 0;
            margin: 16px 0;
            font-size: .9rem;
        }