*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: #f5f1eb;
            color: #2d2a24;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: #b8860b;
            text-decoration: underline;
            transition: color 0.2s;
        }
        a:hover {
            color: #8b6508;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.3;
            color: #1e1b16;
        }
        h1 {
            font-size: 2.4rem;
            margin: 0 0 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            margin: 2.5rem 0 1rem;
            border-bottom: 3px solid #d4a373;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.35rem;
            margin: 2rem 0 0.7rem;
            color: #3d3529;
        }
        h4 {
            font-size: 1.1rem;
            margin: 1.2rem 0 0.5rem;
            color: #4a3f31;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin: 0 0 1.5rem 1.8rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        blockquote {
            border-left: 4px solid #b8860b;
            padding: 0.8rem 1.2rem;
            margin: 1.5rem 0;
            background: #f0ebe4;
            font-style: italic;
            border-radius: 0 8px 8px 0;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
            width: 100%;
        }
        .site-header {
            background: #1e1b16;
            color: #f5f1eb;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #d4a373;
            text-decoration: none;
            letter-spacing: 1px;
            transition: opacity 0.2s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            font-size: 1.6rem;
            color: #b8860b;
        }
        .my-logo:hover {
            opacity: 0.85;
            color: #e8c49a;
        }
        .my-logo span {
            font-weight: 300;
            font-size: 0.9rem;
            color: #a09080;
            margin-left: 0.3rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #b8860b;
            color: #d4a373;
            font-size: 1.5rem;
            padding: 0.3rem 0.7rem;
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #b8860b22;
        }
        .nav-menu {
            display: flex;
            gap: 1.8rem;
            align-items: center;
            list-style: none;
            margin: 0;
        }
        .nav-menu a {
            color: #e8dcc8;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
        }
        .nav-menu a:hover {
            color: #d4a373;
            border-bottom-color: #d4a373;
        }
        .nav-menu .active a {
            color: #d4a373;
            border-bottom-color: #d4a373;
        }
        .breadcrumb {
            background: #f0ebe4;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #ddd6cc;
        }
        .breadcrumb-list {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 0.3rem;
        }
        .breadcrumb-list li+li::before {
            content: "›";
            margin: 0 0.5rem;
            color: #9a8c7a;
        }
        .breadcrumb-list a {
            color: #7a6b58;
            text-decoration: none;
        }
        .breadcrumb-list a:hover {
            color: #b8860b;
        }
        .breadcrumb-list .current {
            color: #2d2a24;
            font-weight: 500;
        }
        .main-content {
            flex: 1;
            padding: 2rem 0 3rem;
        }
        .article-wrapper {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 2.5rem;
        }
        .article-body {
            background: #fffcf9;
            padding: 2rem 2.2rem;
            border-radius: 14px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
        }
        .article-sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fffcf9;
            border-radius: 12px;
            padding: 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            margin-bottom: 1.5rem;
        }
        .sidebar-card h4 {
            font-size: 1rem;
            margin-top: 0;
            border-bottom: 2px solid #d4a373;
            padding-bottom: 0.4rem;
            margin-bottom: 0.8rem;
        }
        .sidebar-card ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 0.5rem;
        }
        .sidebar-card a {
            font-size: 0.9rem;
        }
        .last-updated {
            font-size: 0.8rem;
            color: #8a7e6e;
            margin-top: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .feature-image {
            margin: 1.8rem 0 2rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
        }
        .feature-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        .feature-image figcaption {
            background: #f0ebe4;
            padding: 0.5rem 1rem;
            font-size: 0.85rem;
            color: #5a4f3e;
            text-align: center;
        }
        .stats-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
            background: #faf7f2;
            border-radius: 10px;
            overflow: hidden;
        }
        .stats-table th,
        .stats-table td {
            padding: 0.7rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e5ddd4;
        }
        .stats-table th {
            background: #d4a373;
            color: #1e1b16;
            font-weight: 600;
        }
        .stats-table tr:last-child td {
            border-bottom: none;
        }
        .stats-table tr:hover td {
            background: #f0ebe4;
        }
        .function-section {
            margin: 2.5rem 0;
            padding-top: 1.5rem;
            border-top: 2px solid #e5ddd4;
        }
        .function-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin-top: 1.2rem;
        }
        .function-card {
            background: #faf7f2;
            border-radius: 12px;
            padding: 1.5rem;
            border: 1px solid #e5ddd4;
            transition: box-shadow 0.25s;
        }
        .function-card:hover {
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.07);
        }
        .function-card h4 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #3d3529;
        }
        .function-card input,
        .function-card textarea,
        .function-card select {
            width: 100%;
            padding: 0.6rem 0.8rem;
            border: 1px solid #d4cbbc;
            border-radius: 6px;
            font-size: 0.95rem;
            background: #fffcf9;
            transition: border 0.2s;
            font-family: inherit;
        }
        .function-card input:focus,
        .function-card textarea:focus,
        .function-card select:focus {
            outline: none;
            border-color: #b8860b;
            box-shadow: 0 0 0 3px #b8860b33;
        }
        .function-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            padding: 0.6rem 1.4rem;
            background: #b8860b;
            color: #fff;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            font-size: 0.95rem;
        }
        .btn:hover {
            background: #9a7209;
            transform: translateY(-1px);
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn i {
            margin-right: 0.4rem;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            cursor: pointer;
            color: #d4cbbc;
            transition: color 0.15s;
        }
        .star-rating i:hover,
        .star-rating i.hover {
            color: #d4a373;
        }
        .star-rating i.selected {
            color: #b8860b;
        }
        .rating-value {
            font-size: 0.9rem;
            color: #6a5f4e;
            margin-left: 0.5rem;
        }
        .comment-item {
            background: #faf7f2;
            border-radius: 8px;
            padding: 0.8rem 1rem;
            margin-bottom: 0.8rem;
            border-left: 3px solid #d4a373;
        }
        .comment-item .meta {
            font-size: 0.8rem;
            color: #8a7e6e;
            display: flex;
            gap: 0.6rem;
            margin-bottom: 0.3rem;
        }
        .comment-item .text {
            font-size: 0.95rem;
        }
        .site-footer {
            background: #1e1b16;
            color: #c4b8a8;
            padding: 2rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        .footer-inner h4 {
            color: #d4a373;
            margin-top: 0;
            font-size: 1.1rem;
            border-bottom: 1px solid #3d3529;
            padding-bottom: 0.4rem;
            margin-bottom: 0.8rem;
        }
        .footer-inner a {
            color: #c4b8a8;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        .footer-inner a:hover {
            color: #d4a373;
        }
        .footer-inner ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-inner li {
            margin-bottom: 0.4rem;
        }
        .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid #3d3529;
            padding-top: 1.2rem;
            margin-top: 1.5rem;
            font-size: 0.85rem;
            text-align: center;
            color: #8a7e6e;
        }
        friend-link {
            display: block;
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        friend-link a {
            margin-right: 1rem;
        }
        @media (max-width: 992px) {
            .article-wrapper {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0.3rem;
                padding: 1rem 0 0.5rem;
                border-top: 1px solid #3d3529;
                margin-top: 0.5rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.5rem 0;
                font-size: 1rem;
                border-bottom: 1px solid #2d2a24;
            }
            .article-body {
                padding: 1.2rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .function-grid {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .stats-table {
                font-size: 0.8rem;
            }
            .stats-table th,
            .stats-table td {
                padding: 0.4rem 0.6rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo span {
                font-size: 0.7rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.8rem;
            }
            .article-body {
                padding: 0.8rem;
            }
            h1 {
                font-size: 1.5rem;
            }
            .star-rating {
                font-size: 1.3rem;
            }
        }
        .text-highlight {
            background: linear-gradient(to right, #f0ebe4, #e8dcc8);
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.2em;
        }
        .tag {
            display: inline-block;
            background: #d4a37322;
            padding: 0.15rem 0.6rem;
            border-radius: 20px;
            font-size: 0.8rem;
            color: #7a6b58;
        }
        .toc {
            background: #faf7f2;
            border-radius: 10px;
            padding: 1.2rem 1.5rem;
            margin: 1.5rem 0;
            border: 1px solid #e5ddd4;
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ol {
            margin-bottom: 0;
        }
        .toc a {
            text-decoration: none;
        }