*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, Arial, sans-serif;
            line-height: 1.8;
            color: #1e293b;
            background: #f8fafc;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
            word-wrap: break-word;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #1d4ed8;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.6rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        p {
            margin-bottom: 1.2rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            color: #0f172a;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.5rem;
            border-bottom: 4px solid #f59e0b;
            padding-bottom: 0.5rem;
            display: inline-block;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #f59e0b;
            padding-left: 15px;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
        }
        hr {
            border: none;
            border-top: 2px solid #e2e8f0;
            margin: 2.5rem 0;
        }
        .container {
            background: #ffffff;
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
            padding: 20px 25px 40px;
            margin: 20px 0 40px;
        }
        @media (min-width: 768px) {
            .container {
                padding: 30px 40px 50px;
            }
            body {
                padding: 0 30px;
            }
            h1 {
                font-size: 3rem;
            }
            h2 {
                font-size: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding: 40px 55px 60px;
            }
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0 10px;
            border-bottom: 2px solid #e2e8f0;
            position: relative;
            background: #ffffff;
            z-index: 100;
        }
        .my-logo {
            font-size: 1.7rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f59e0b, #d97706);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            text-decoration: none !important;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: #f59e0b;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none !important;
        }
        .nav-toggle {
            display: block;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #0f172a;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #f1f5f9;
        }
        @media (min-width: 768px) {
            .nav-toggle {
                display: none;
            }
        }
        .nav-menu {
            display: none;
            width: 100%;
            flex-direction: column;
            gap: 6px;
            padding: 16px 0 8px;
            border-top: 1px solid #e2e8f0;
            margin-top: 10px;
        }
        .nav-menu.active {
            display: flex;
        }
        .nav-menu a {
            padding: 10px 14px;
            border-radius: 10px;
            font-weight: 500;
            color: #1e293b;
            transition: background 0.2s, color 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-menu a:hover {
            background: #fef3c7;
            color: #d97706;
            text-decoration: none;
        }
        @media (min-width: 768px) {
            .nav-menu {
                display: flex !important;
                flex-direction: row;
                width: auto;
                border-top: none;
                margin-top: 0;
                padding: 0;
                gap: 4px;
            }
            .nav-menu a {
                padding: 8px 14px;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px 10px;
            font-size: 0.85rem;
            padding: 12px 0 6px;
            color: #64748b;
            background: transparent;
            border-radius: 10px;
            margin-bottom: 4px;
        }
        .breadcrumb a {
            color: #2563eb;
            font-weight: 500;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: #94a3b8;
        }
        .breadcrumb .current {
            color: #0f172a;
            font-weight: 600;
        }
        .search-section {
            background: #f1f5f9;
            border-radius: 16px;
            padding: 25px 20px;
            margin: 20px 0 30px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
        }
        .search-section label {
            font-weight: 600;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            gap: 8px;
            color: #0f172a;
        }
        .search-form {
            display: flex;
            flex: 1;
            min-width: 200px;
            gap: 8px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid #cbd5e1;
            border-radius: 12px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
            background: #ffffff;
        }
        .search-form input:focus {
            border-color: #f59e0b;
            box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.15);
        }
        .search-form button {
            padding: 12px 22px;
            background: #f59e0b;
            color: #ffffff;
            border: none;
            border-radius: 12px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #d97706;
            transform: scale(1.02);
        }
        .search-form button:active {
            transform: scale(0.97);
        }
        .last-updated {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fef3c7;
            color: #92400e;
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 18px;
        }
        .last-updated i {
            font-size: 0.9rem;
        }
        .content-area {
            margin: 10px 0 30px;
        }
        .content-area .highlight-box {
            background: linear-gradient(135deg, #fef3c7, #fde68a);
            border-left: 5px solid #f59e0b;
            padding: 18px 22px;
            border-radius: 12px;
            margin: 24px 0;
            font-weight: 500;
        }
        .content-area .highlight-box i {
            color: #d97706;
            margin-right: 8px;
        }
        .code-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0 30px;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        }
        .code-table th {
            background: #f59e0b;
            color: #ffffff;
            padding: 14px 16px;
            text-align: left;
            font-weight: 700;
        }
        .code-table td {
            padding: 12px 16px;
            border-bottom: 1px solid #e2e8f0;
            background: #ffffff;
        }
        .code-table tr:nth-child(even) td {
            background: #f8fafc;
        }
        .code-table tr:hover td {
            background: #fef3c7;
        }
        .code-badge {
            background: #10b981;
            color: #ffffff;
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.3px;
        }
        .code-badge.expired {
            background: #ef4444;
        }
        .code-badge.active {
            background: #10b981;
        }
        .btn-copy {
            background: #e2e8f0;
            border: none;
            padding: 4px 12px;
            border-radius: 8px;
            font-size: 0.8rem;
            cursor: pointer;
            transition: background 0.2s;
            font-weight: 600;
        }
        .btn-copy:hover {
            background: #cbd5e1;
        }
        .btn-copy i {
            margin-right: 4px;
        }
        .featured-image {
            margin: 30px 0 20px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            aspect-ratio: 1200/630;
            object-fit: cover;
            background: #e2e8f0;
        }
        .featured-image figcaption {
            padding: 12px 18px;
            background: #f1f5f9;
            font-size: 0.85rem;
            color: #475569;
            font-style: italic;
        }
        .rating-section {
            background: #f1f5f9;
            border-radius: 16px;
            padding: 24px 22px;
            margin: 30px 0 20px;
        }
        .rating-section h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            cursor: pointer;
            margin: 10px 0 12px;
        }
        .stars i {
            color: #cbd5e1;
            transition: color 0.2s, transform 0.1s;
        }
        .stars i:hover,
        .stars i.hover {
            color: #f59e0b;
            transform: scale(1.1);
        }
        .stars i.selected {
            color: #f59e0b;
        }
        .rating-form button {
            padding: 10px 28px;
            background: #f59e0b;
            color: #ffffff;
            border: none;
            border-radius: 12px;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.2s;
        }
        .rating-form button:hover {
            background: #d97706;
        }
        .rating-feedback {
            margin-top: 10px;
            font-weight: 500;
            color: #10b981;
        }
        .comments-section {
            margin: 30px 0 20px;
            padding: 24px 22px;
            background: #ffffff;
            border-radius: 16px;
            border: 2px solid #e2e8f0;
        }
        .comments-section h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .comment-form textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #cbd5e1;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            resize: vertical;
            min-height: 100px;
            outline: none;
            transition: border 0.2s;
        }
        .comment-form textarea:focus {
            border-color: #f59e0b;
            box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.1);
        }
        .comment-form .form-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 12px;
            align-items: center;
        }
        .comment-form input {
            flex: 1;
            min-width: 160px;
            padding: 10px 16px;
            border: 2px solid #cbd5e1;
            border-radius: 12px;
            font-size: 1rem;
            outline: none;
        }
        .comment-form input:focus {
            border-color: #f59e0b;
        }
        .comment-form button {
            padding: 10px 28px;
            background: #2563eb;
            color: #ffffff;
            border: none;
            border-radius: 12px;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .comment-form button:hover {
            background: #1d4ed8;
        }
        .comment-list {
            margin-top: 20px;
        }
        .comment-item {
            padding: 14px 0;
            border-bottom: 1px solid #e2e8f0;
        }
        .comment-item:last-child {
            border-bottom: none;
        }
        .comment-item strong {
            color: #0f172a;
        }
        .comment-item .comment-date {
            font-size: 0.8rem;
            color: #94a3b8;
            margin-left: 10px;
        }
        .comment-item p {
            margin: 4px 0 0;
        }
        friend-link {
            display: block;
            padding: 20px 0 10px;
            border-top: 2px solid #e2e8f0;
            margin-top: 30px;
        }
        friend-link .fl-title {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 12px;
            color: #0f172a;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        friend-link .fl-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 18px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        friend-link .fl-list li {
            margin: 0;
        }
        friend-link .fl-list a {
            font-weight: 500;
            font-size: 0.9rem;
        }
        .site-footer {
            padding: 24px 0 20px;
            border-top: 2px solid #e2e8f0;
            margin-top: 30px;
            text-align: center;
            font-size: 0.85rem;
            color: #64748b;
        }
        .site-footer .copyright {
            font-weight: 500;
        }
        .site-footer a {
            color: #2563eb;
        }
        @media (max-width: 480px) {
            .code-table {
                font-size: 0.78rem;
            }
            .code-table th,
            .code-table td {
                padding: 8px 10px;
            }
            .stars {
                font-size: 1.5rem;
            }
            .search-section {
                flex-direction: column;
                align-items: stretch;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .container {
                padding: 15px 14px 30px;
            }
        }
        .text-gold {
            color: #f59e0b;
        }
        .fw-700 {
            font-weight: 700;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .gap-4 {
            gap: 4px;
        }
        .anchor-offset {
            scroll-margin-top: 30px;
        }
        .toast-msg {
            position: fixed;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            background: #0f172a;
            color: #ffffff;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.9rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            z-index: 999;
            opacity: 0;
            transition: opacity 0.3s ease;
            pointer-events: none;
        }
        .toast-msg.show {
            opacity: 1;
        }