*,
        *::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, 'Helvetica Neue', sans-serif;
            background: #f5f2eb;
            color: #2d2a24;
            line-height: 1.8;
            padding: 0 1rem;
        }
        a {
            color: #2e7d32;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1b5e20;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #fffcf8;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.06);
            border-radius: 24px;
            padding: 1.5rem 2rem 2rem;
            margin-top: 1.5rem;
            margin-bottom: 2rem;
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 1rem;
            border-bottom: 2px solid #e8e0d5;
            position: relative;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #3e2723;
            text-decoration: none;
            background: linear-gradient(145deg, #5d4037, #3e2723);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .my-logo i {
            -webkit-text-fill-color: #6d4c41;
            font-size: 1.8rem;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.85;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #4e342e;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #efebe9;
        }
        .primary-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 0.2rem 0.8rem;
            align-items: center;
        }
        .primary-nav a {
            font-weight: 500;
            padding: 0.4rem 0.8rem;
            border-radius: 30px;
            color: #4e342e;
            font-size: 0.95rem;
            transition: background 0.2s, color 0.2s;
        }
        .primary-nav a:hover {
            background: #2e7d32;
            color: #fff;
            text-decoration: none;
        }
        .primary-nav a i {
            margin-right: 0.3rem;
            font-size: 0.85rem;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            font-size: 0.85rem;
            padding: 1rem 0 0.5rem;
            color: #6d4c41;
            list-style: none;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #a1887f;
            margin-right: 0.3rem;
        }
        .breadcrumb a {
            color: #5d4037;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #2e7d32;
            font-weight: 600;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #1b3a1b;
            margin: 1.2rem 0 0.8rem;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #2e5a2e;
            margin: 2.8rem 0 0.8rem;
            padding-bottom: 0.3rem;
            border-bottom: 3px solid #c8e6c9;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #3e6b3e;
            margin: 2rem 0 0.6rem;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #4e7a4e;
            margin: 1.4rem 0 0.4rem;
        }
        p {
            margin-bottom: 1.2rem;
            color: #3d352e;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 400;
            color: #4e3e35;
            border-left: 4px solid #81c784;
            padding-left: 1.2rem;
            background: #f1f8e9;
            border-radius: 0 8px 8px 0;
            padding: 0.8rem 1.2rem;
        }
        .content-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.2rem;
            align-items: center;
            font-size: 0.9rem;
            color: #6d4c41;
            margin: 0.5rem 0 1.5rem;
            padding: 0.6rem 0;
            border-top: 1px solid #e8e0d5;
            border-bottom: 1px solid #e8e0d5;
        }
        .content-meta i {
            margin-right: 0.3rem;
            color: #6d4c41;
        }
        .content-meta .updated {
            font-weight: 600;
            color: #2e7d32;
        }
        .featured-image {
            margin: 2rem 0 1.5rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        }
        .featured-image figcaption {
            background: #efebe9;
            padding: 0.6rem 1rem;
            font-size: 0.85rem;
            color: #4e342e;
            text-align: center;
            font-style: italic;
        }
        .highlight-box {
            background: #e8f5e9;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin: 1.8rem 0;
            border-left: 6px solid #388e3c;
        }
        .highlight-box h4 {
            margin-top: 0;
        }
        .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .info-card {
            background: #fff;
            border-radius: 12px;
            padding: 1.2rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8e0d5;
            text-align: center;
        }
        .info-card i {
            font-size: 2rem;
            color: #388e3c;
            margin-bottom: 0.5rem;
        }
        .info-card h4 {
            margin: 0.3rem 0;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 0.8rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e8e0d5;
        }
        th {
            background: #2e7d32;
            color: #fff;
            font-weight: 600;
        }
        tr:nth-child(even) {
            background: #f9f6f0;
        }
        tr:hover {
            background: #e8f5e9;
        }
        .interaction-section {
            margin: 3rem 0;
            padding: 2rem;
            background: #f9f6f0;
            border-radius: 20px;
            border: 1px solid #e8e0d5;
        }
        .interaction-section h2 {
            margin-top: 0;
            border-bottom-color: #a5d6a7;
        }
        .search-form {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
            margin: 1rem 0;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 0.7rem 1.2rem;
            border: 2px solid #c8e6c9;
            border-radius: 40px;
            font-size: 1rem;
            background: #fff;
            transition: border 0.3s;
        }
        .search-form input[type="text"]:focus {
            border-color: #2e7d32;
            outline: none;
        }
        .search-form button {
            padding: 0.7rem 1.8rem;
            background: #2e7d32;
            color: #fff;
            border: none;
            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: #1b5e20;
            transform: scale(1.02);
        }
        .search-form button:active {
            transform: scale(0.97);
        }
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem 1.2rem;
            border: 2px solid #c8e6c9;
            border-radius: 16px;
            font-size: 1rem;
            font-family: inherit;
            resize: vertical;
            min-height: 100px;
            transition: border 0.3s;
            background: #fff;
        }
        .comment-form textarea:focus {
            border-color: #2e7d32;
            outline: none;
        }
        .comment-form .form-row {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-top: 0.8rem;
        }
        .comment-form .form-row input {
            flex: 1;
            min-width: 160px;
            padding: 0.7rem 1.2rem;
            border: 2px solid #c8e6c9;
            border-radius: 40px;
            font-size: 0.95rem;
            background: #fff;
        }
        .comment-form .form-row input:focus {
            border-color: #2e7d32;
            outline: none;
        }
        .comment-form button {
            padding: 0.7rem 2rem;
            background: #5d4037;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .comment-form button:hover {
            background: #3e2723;
        }
        .star-rating {
            display: flex;
            gap: 0.4rem;
            font-size: 2rem;
            cursor: pointer;
            direction: rtl;
            justify-content: flex-end;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #d7ccc8;
            transition: color 0.2s, transform 0.1s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f9a825;
            transform: scale(1.1);
        }
        .rating-result {
            font-size: 1.1rem;
            font-weight: 600;
            color: #4e342e;
            margin-top: 0.5rem;
        }
        friend-link {
            display: block;
            padding: 1.5rem 0 0.5rem;
            margin-top: 2rem;
            border-top: 2px solid #e8e0d5;
        }
        friend-link h3 {
            font-size: 1.3rem;
            margin-bottom: 0.8rem;
        }
        friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.5rem;
        }
        friend-link li a {
            color: #4e342e;
            font-weight: 500;
            padding: 0.3rem 0.8rem;
            background: #efebe9;
            border-radius: 30px;
            font-size: 0.9rem;
            transition: background 0.2s, color 0.2s;
        }
        friend-link li a:hover {
            background: #2e7d32;
            color: #fff;
            text-decoration: none;
        }
        .site-footer {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 2px solid #e8e0d5;
            text-align: center;
            font-size: 0.9rem;
            color: #6d4c41;
        }
        .site-footer .copyright {
            font-weight: 500;
            margin-top: 0.5rem;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.6rem;
            }
            .container {
                padding: 1rem 1.2rem;
                border-radius: 16px;
                margin-top: 0.8rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            h4 {
                font-size: 1.05rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .nav-toggle {
                display: block;
            }
            .primary-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #fffcf8;
                padding: 1rem 0;
                border-top: 1px solid #e8e0d5;
                margin-top: 0.8rem;
            }
            .primary-nav.open {
                display: flex;
            }
            .primary-nav a {
                padding: 0.6rem 1rem;
                width: 100%;
                border-radius: 8px;
            }
            .breadcrumb {
                font-size: 0.75rem;
                gap: 0.2rem 0.4rem;
            }
            .content-meta {
                font-size: 0.8rem;
                gap: 0.6rem;
            }
            .interaction-section {
                padding: 1.2rem;
            }
            .star-rating {
                font-size: 1.6rem;
                justify-content: center;
            }
            .search-form input[type="text"] {
                min-width: 140px;
            }
            .info-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0.8rem 0.8rem;
            }
            h1 {
                font-size: 1.5rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            h3 {
                font-size: 1.05rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .info-grid {
                grid-template-columns: 1fr;
            }
            .comment-form .form-row {
                flex-direction: column;
            }
            .comment-form .form-row input {
                min-width: 100%;
            }
        }
        .primary-nav {
            transition: all 0.3s ease;
        }
        .toc {
            background: #efebe9;
            border-radius: 16px;
            padding: 1.2rem 1.8rem;
            margin: 1.5rem 0;
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ol {
            padding-left: 1.5rem;
            columns: 2;
            column-gap: 2rem;
        }
        .toc ol li {
            margin-bottom: 0.3rem;
            break-inside: avoid;
        }
        .toc ol li a {
            color: #4e342e;
        }
        @media (max-width: 600px) {
            .toc ol {
                columns: 1;
            }
        }
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #2e7d32;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            border: none;
            transition: background 0.2s, transform 0.2s;
            z-index: 100;
            opacity: 0.8;
        }
        .scroll-top:hover {
            background: #1b5e20;
            transform: scale(1.05);
            opacity: 1;
        }