*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f8f9fc;
            color: #1e1e2a;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #c44536;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover,
        a:focus {
            color: #a12e1f;
            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;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: #12121c;
            margin-top: 0;
            font-weight: 700;
            letter-spacing: -0.01em;
        }
        h1 {
            font-size: 2.6rem;
            margin-bottom: 1.2rem;
            border-left: 6px solid #c44536;
            padding-left: 1.2rem;
        }
        h2 {
            font-size: 2.0rem;
            margin-top: 3.2rem;
            margin-bottom: 1.0rem;
            padding-bottom: 0.4rem;
            border-bottom: 2px solid #e0e4ed;
        }
        h3 {
            font-size: 1.5rem;
            margin-top: 2.4rem;
            margin-bottom: 0.8rem;
            color: #2a2a3e;
        }
        h4 {
            font-size: 1.2rem;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
            color: #3a3a52;
        }
        p {
            margin-bottom: 1.2rem;
        }
        strong {
            color: #1a1a2e;
            font-weight: 700;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0f0f1a 0%, #1c1c30 100%);
            color: #fff;
            padding: 0 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.8rem 20px;
            max-width: 1120px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #f5c542;
            letter-spacing: -0.03em;
            text-transform: uppercase;
            background: linear-gradient(135deg, #f5c542, #e8a838);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: transform 0.2s ease;
            display: inline-block;
            font-family: 'Segoe UI', sans-serif;
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
        }
        .my-logo span {
            font-weight: 300;
            color: #aaa;
            font-size: 0.75rem;
            display: block;
            -webkit-text-fill-color: #aaa;
            letter-spacing: 0.2em;
            text-transform: none;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 0.2rem;
            padding: 0;
            margin: 0;
        }
        .nav-list li a {
            color: #ddd;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            display: block;
        }
        .nav-list li a:hover,
        .nav-list li a:focus {
            background: rgba(255, 255, 255, 0.12);
            color: #f5c542;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            transition: opacity 0.2s;
        }
        .hamburger:hover {
            opacity: 0.75;
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #eef0f5;
            padding: 0.6rem 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid #d8dce6;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            padding: 0;
            margin: 0 auto;
            max-width: 1120px;
        }
        .breadcrumb ol li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #888;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #555;
        }
        .breadcrumb a:hover {
            color: #c44536;
        }
        .breadcrumb .current {
            color: #1e1e2a;
            font-weight: 600;
        }
        .featured-image-wrap {
            margin: 2rem 0 2.4rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.10);
            background: #e2e6ef;
        }
        .featured-image-wrap img {
            width: 100%;
            height: auto;
            display: block;
        }
        .article-body {
            background: #fff;
            border-radius: 20px;
            padding: 2.4rem 2.8rem;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
            margin: 1.6rem 0 2.4rem;
        }
        .article-body p,
        .article-body li {
            font-size: 1.05rem;
            color: #2a2a3a;
        }
        .article-body .last-updated {
            display: inline-block;
            background: #f0f2f7;
            padding: 0.3rem 1.2rem;
            border-radius: 40px;
            font-size: 0.85rem;
            color: #555;
            margin-bottom: 1.8rem;
            border: 1px solid #e0e4ed;
        }
        .article-body .last-updated i {
            margin-right: 0.4rem;
            color: #c44536;
        }
        .toc {
            background: #f4f5fa;
            border-radius: 16px;
            padding: 1.6rem 2rem;
            margin: 2rem 0 2.8rem;
            border-left: 5px solid #c44536;
        }
        .toc h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .toc ul {
            list-style: none;
            padding: 0;
            margin: 0.8rem 0 0;
            columns: 2 220px;
            column-gap: 2rem;
        }
        .toc ul li {
            padding: 0.2rem 0;
            break-inside: avoid;
        }
        .toc ul li a {
            color: #2a2a3e;
            font-weight: 500;
        }
        .toc ul li a:hover {
            color: #c44536;
        }
        .search-section {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem 2rem;
            margin: 2.4rem 0;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            border: 1px solid #e8ebf2;
        }
        .search-form {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
            max-width: 600px;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 180px;
            padding: 0.8rem 1.2rem;
            border: 2px solid #d8dce6;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.2s;
            background: #fafbfc;
        }
        .search-form input[type="text"]:focus {
            border-color: #c44536;
        }
        .search-form button {
            background: #c44536;
            color: #fff;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #a12e1f;
            transform: scale(1.02);
        }
        .rating-section {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem 2rem;
            margin: 2.4rem 0;
            border: 1px solid #e8ebf2;
        }
        .rating-stars {
            display: flex;
            gap: 0.4rem;
            font-size: 2rem;
            color: #d8dce6;
            cursor: pointer;
            flex-wrap: wrap;
        }
        .rating-stars .star {
            transition: color 0.15s, transform 0.1s;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: #f5b342;
            transform: scale(1.1);
        }
        .rating-form {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            margin-top: 0.8rem;
        }
        .rating-form button {
            background: #2a2a3e;
            color: #fff;
            border: none;
            padding: 0.6rem 1.6rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .rating-form button:hover {
            background: #1a1a2e;
        }
        .comments-section {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem 2rem;
            margin: 2.4rem 0;
            border: 1px solid #e8ebf2;
        }
        .comments-section textarea {
            width: 100%;
            min-height: 110px;
            padding: 1rem;
            border: 2px solid #d8dce6;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            resize: vertical;
            transition: border-color 0.2s;
            background: #fafbfc;
        }
        .comments-section textarea:focus {
            border-color: #c44536;
            outline: none;
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            max-width: 640px;
        }
        .comment-form input[type="text"] {
            padding: 0.7rem 1rem;
            border: 2px solid #d8dce6;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            background: #fafbfc;
            transition: border-color 0.2s;
        }
        .comment-form input[type="text"]:focus {
            border-color: #c44536;
        }
        .comment-form button {
            align-self: flex-start;
            background: #c44536;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .comment-form button:hover {
            background: #a12e1f;
        }
        friend-link {
            display: block;
            background: #f4f5fa;
            border-radius: 16px;
            padding: 1.8rem 2rem;
            margin: 2.4rem 0 1.2rem;
            border: 1px solid #e0e4ed;
        }
        friend-link h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.4rem;
            margin-top: 0.8rem;
        }
        friend-link ul li a {
            color: #2a2a3e;
            font-weight: 500;
            padding: 0.2rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
        }
        friend-link ul li a:hover {
            border-bottom-color: #c44536;
            color: #c44536;
            text-decoration: none;
        }
        .site-footer {
            background: #0f0f1a;
            color: #b0b0c0;
            padding: 2.4rem 20px 1.8rem;
            margin-top: 3rem;
            border-top: 4px solid #c44536;
        }
        .footer-inner {
            max-width: 1120px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.6rem;
        }
        .footer-copy {
            font-size: 0.9rem;
        }
        .footer-copy strong {
            color: #eee;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 1.9rem;
                padding-left: 0.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .article-body {
                padding: 1.4rem 1.2rem;
            }
            .header-inner {
                padding: 0.6rem 16px;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1c1c30;
                padding: 0.8rem 0;
                border-radius: 0 0 16px 16px;
                margin-top: 0.4rem;
            }
            .nav-list li a {
                padding: 0.6rem 1.4rem;
            }
            .hamburger {
                display: block;
            }
            #nav-toggle:checked~.nav-list {
                display: flex;
            }
            .nav-wrapper {
                flex-wrap: wrap;
                width: 100%;
            }
            #nav-toggle:checked~.nav-wrapper .nav-list {
                display: flex;
                width: 100%;
            }
            .toc ul {
                columns: 1;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .rating-stars {
                font-size: 1.6rem;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
            }
            .breadcrumb ol {
                font-size: 0.8rem;
            }
            .featured-image-wrap {
                margin: 1.2rem 0 1.6rem;
            }
        }
        @media (min-width: 769px) {
            .nav-list {
                display: flex !important;
            }
            #nav-toggle {
                display: none !important;
            }
            .hamburger {
                display: none !important;
            }
        }
        .highlight-box {
            background: #fdf6ec;
            border-left: 5px solid #f5b342;
            padding: 1.2rem 1.6rem;
            border-radius: 0 12px 12px 0;
            margin: 1.6rem 0;
        }
        .pro-tip {
            background: #eaf4ed;
            border-left: 5px solid #2d7d46;
            padding: 1.2rem 1.6rem;
            border-radius: 0 12px 12px 0;
            margin: 1.6rem 0;
        }
        .emoji-lg {
            font-size: 1.3em;
            margin-right: 0.2em;
        }
        .inline-code {
            background: #eef0f5;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            font-family: 'Courier New', monospace;
            font-size: 0.92em;
            color: #c44536;
        }
        .keybind {
            display: inline-block;
            background: #1e1e2a;
            color: #f5c542;
            padding: 0.15rem 0.7rem;
            border-radius: 6px;
            font-weight: 600;
            font-size: 0.9em;
            border: 1px solid #3a3a52;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.6rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.98rem;
            background: #fafbfc;
            border-radius: 12px;
            overflow: hidden;
        }
        table th {
            background: #1e1e2a;
            color: #f5c542;
            padding: 0.7rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        table td {
            padding: 0.6rem 1rem;
            border-bottom: 1px solid #e0e4ed;
        }
        table tr:last-child td {
            border-bottom: none;
        }
        .btn-subtle {
            background: none;
            border: 2px solid #c44536;
            color: #c44536;
            padding: 0.4rem 1.2rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, color 0.2s;
        }
        .btn-subtle:hover {
            background: #c44536;
            color: #fff;
        }
        .section-icon {
            margin-right: 0.5rem;
            color: #c44536;
        }