*,
        *::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, sans-serif;
            background: #f8f6f2;
            color: #1e2a2e;
            line-height: 1.7;
            padding: 0 1rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        a {
            color: #b45309;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #78350f;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            color: #1e2a2e;
        }
        h1 {
            font-size: 2.4rem;
            margin: 1.5rem 0 1rem;
            border-left: 6px solid #b45309;
            padding-left: 1rem;
        }
        h2 {
            font-size: 1.8rem;
            margin: 2.5rem 0 1rem;
            border-bottom: 2px solid #e7d9c6;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.35rem;
            margin: 1.8rem 0 0.6rem;
            color: #3f2e1e;
        }
        h4 {
            font-size: 1.1rem;
            margin: 1.2rem 0 0.4rem;
            color: #5c4a38;
        }
        p {
            margin-bottom: 1.1rem;
        }
        ul,
        ol {
            margin: 0.6rem 0 1.2rem 1.8rem;
        }
        li {
            margin-bottom: 0.3rem;
        }
        blockquote {
            background: #ede7dd;
            border-left: 5px solid #b45309;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2d2219;
        }
        hr {
            border: none;
            border-top: 1px solid #dccfc0;
            margin: 2rem 0;
        }
        .text-muted {
            color: #5f5b55;
        }
        .text-small {
            font-size: 0.9rem;
        }
        .badge {
            display: inline-block;
            background: #b45309;
            color: #fff;
            padding: 0.15rem 0.75rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        header {
            padding: 1.2rem 0;
            border-bottom: 2px solid #e7d9c6;
            margin-bottom: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #1e2a2e;
            background: linear-gradient(135deg, #b45309, #78350f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none !important;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .my-logo small {
            font-size: 0.9rem;
            font-weight: 400;
            -webkit-text-fill-color: #5f5b55;
            color: #5f5b55;
        }
        .nav-toggle {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #1e2a2e;
            cursor: pointer;
            padding: 0.25rem 0.5rem;
        }
        .nav-toggle:focus-visible {
            outline: 2px solid #b45309;
            outline-offset: 2px;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 1.8rem;
            flex-wrap: wrap;
        }
        nav a {
            font-weight: 500;
            color: #1e2a2e;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
        }
        nav a:hover {
            border-bottom-color: #b45309;
            color: #b45309;
            text-decoration: none;
        }
        .nav-active {
            border-bottom-color: #b45309 !important;
            color: #b45309 !important;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.6rem 0 0.2rem;
            font-size: 0.9rem;
            color: #5f5b55;
            width: 100%;
            margin-top: 0.4rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            padding: 0 0.6rem;
            color: #b45309;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #5f5b55;
        }
        .breadcrumb a:hover {
            color: #b45309;
        }
        .breadcrumb .current {
            color: #1e2a2e;
            font-weight: 600;
        }
        .search-section {
            background: #ede7dd;
            padding: 2rem 1.5rem;
            border-radius: 16px;
            margin: 2rem 0;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        .search-section input[type="text"] {
            flex: 1 1 240px;
            padding: 0.8rem 1.2rem;
            border: 2px solid #dccfc0;
            border-radius: 50px;
            font-size: 1rem;
            background: #fff;
            outline: none;
            transition: border-color 0.2s;
        }
        .search-section input[type="text"]:focus {
            border-color: #b45309;
        }
        .search-section button {
            background: #b45309;
            color: #fff;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .search-section button:hover {
            background: #78350f;
            transform: scale(1.02);
        }
        .search-section button i {
            margin-right: 0.5rem;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .feature-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            transition: transform 0.2s, box-shadow 0.2s;
            border: 1px solid #efebe6;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
        }
        .feature-card i {
            font-size: 2rem;
            color: #b45309;
            margin-bottom: 0.6rem;
        }
        .feature-card h3 {
            margin-top: 0;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 0.9rem 1rem;
            text-align: left;
            border-bottom: 1px solid #efebe6;
        }
        th {
            background: #1e2a2e;
            color: #f8f6f2;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #faf7f2;
        }
        .user-feedback {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 2.5rem 0;
        }
        @media (max-width:680px) {
            .user-feedback {
                grid-template-columns: 1fr;
            }
        }
        .feedback-panel {
            background: #fff;
            border-radius: 16px;
            padding: 1.8rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #efebe6;
        }
        .feedback-panel h3 {
            margin-top: 0;
        }
        .feedback-panel form {
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
        }
        .feedback-panel input,
        .feedback-panel textarea,
        .feedback-panel select {
            padding: 0.7rem 1rem;
            border: 2px solid #dccfc0;
            border-radius: 10px;
            font-size: 0.95rem;
            background: #fcfaf8;
            outline: none;
            transition: border-color 0.2s;
            width: 100%;
        }
        .feedback-panel input:focus,
        .feedback-panel textarea:focus,
        .feedback-panel select:focus {
            border-color: #b45309;
        }
        .feedback-panel textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-panel button {
            background: #b45309;
            color: #fff;
            border: none;
            padding: 0.7rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
        }
        .feedback-panel button:hover {
            background: #78350f;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #dccfc0;
            cursor: pointer;
        }
        .star-rating i {
            transition: color 0.15s, transform 0.15s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #f59e0b;
            transform: scale(1.1);
        }
        footer {
            border-top: 2px solid #e7d9c6;
            padding: 2rem 0 1.5rem;
            margin-top: 3rem;
        }
        friend-link {
            display: block;
            background: #ede7dd;
            padding: 1.2rem 1.5rem;
            border-radius: 16px;
            margin-bottom: 1.5rem;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 1rem 0.2rem 0;
        }
        friend-link a::before {
            content: "🔗 ";
            font-size: 0.8rem;
        }
        .copyright {
            text-align: center;
            color: #5f5b55;
            font-size: 0.9rem;
            padding-top: 1rem;
            border-top: 1px solid #dccfc0;
        }
        @media (max-width:820px) {
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            body {
                padding: 0 0.8rem;
            }
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.6rem;
                padding: 1rem 0 0.4rem;
                border-top: 1px solid #e7d9c6;
                margin-top: 0.8rem;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 0.5rem 0;
                border-bottom: 1px solid #efebe6;
                width: 100%;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .search-section {
                flex-direction: column;
                padding: 1.5rem 1rem;
            }
            .search-section button {
                width: 100%;
            }
        }
        @media (min-width:821px) {
            .nav-toggle {
                display: none !important;
            }
            nav {
                display: flex !important;
            }
        }
        .last-updated {
            display: inline-block;
            background: #1e2a2e;
            color: #f8f6f2;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        .img-caption {
            font-size: 0.85rem;
            color: #5f5b55;
            text-align: center;
            margin-top: 0.4rem;
        }
        .highlight-box {
            background: #fcf6ee;
            border-left: 5px solid #b45309;
            padding: 1.2rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .btn {
            display: inline-block;
            background: #b45309;
            color: #fff;
            padding: 0.5rem 1.4rem;
            border-radius: 50px;
            font-weight: 600;
            transition: background 0.2s;
        }
        .btn:hover {
            background: #78350f;
            text-decoration: none;
            color: #fff;
        }
        .toc {
            background: #fff;
            padding: 1.2rem 1.8rem;
            border-radius: 16px;
            margin: 1.8rem 0;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }
        .toc ol {
            margin-bottom: 0;
        }
        .toc a {
            color: #1e2a2e;
        }
        .toc a:hover {
            color: #b45309;
        }