*,
        *::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, Roboto, 'Helvetica Neue', sans-serif;
            background: #f6f3ed;
            color: #1e2a1c;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #1d6b2c;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #b8860b;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            display: block;
        }
        h1,
        h2,
        h3,
        h4 {
            line-height: 1.3;
            color: #1a3a18;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            margin: 1.2rem 0 0.8rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.9rem;
            margin: 2.5rem 0 1rem;
            border-bottom: 3px solid #c7a54b;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.5rem;
            margin: 2rem 0 0.75rem;
        }
        h4 {
            font-size: 1.2rem;
            margin: 1.4rem 0 0.5rem;
        }
        p {
            margin-bottom: 1.1rem;
        }
        ul,
        ol {
            margin: 0.8rem 0 1.2rem 1.6rem;
        }
        li {
            margin-bottom: 0.35rem;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
            background: #fffcf7;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 1px 6px rgba(0, 0, 0, 0.05);
        }
        th,
        td {
            padding: 0.8rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e2dcd0;
        }
        th {
            background: #2d5a27;
            color: #f5ede0;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        blockquote {
            border-left: 5px solid #c7a54b;
            background: #f0ebe2;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 10px 10px 0;
            font-style: italic;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            background: #ffffff;
            padding: 0 1.5rem 2rem;
            border-radius: 18px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
        }
        .site-header {
            padding: 1.2rem 0 0.4rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            border-bottom: 2px solid #e8dfd0;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #1d6b2c;
            letter-spacing: -0.03em;
            background: linear-gradient(145deg, #1d6b2c, #b8860b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
        }
        .my-logo i {
            -webkit-text-fill-color: #1d6b2c;
            margin-right: 6px;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.88;
        }
        .my-logo small {
            font-size: 0.9rem;
            font-weight: 400;
            -webkit-text-fill-color: #4a5f47;
            margin-left: 6px;
            letter-spacing: 0;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        .main-nav {
            display: flex;
            gap: 0.8rem 1.5rem;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
        }
        .main-nav li a {
            font-weight: 600;
            color: #1e3a1c;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s;
        }
        .main-nav li a:hover {
            border-bottom-color: #b8860b;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #1e3a1c;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
        }
        .hamburger:focus {
            outline: 2px solid #b8860b;
        }
        .breadcrumb {
            padding: 0.8rem 0 0.2rem;
            font-size: 0.9rem;
            color: #5a6f57;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb a {
            color: #2d5a27;
        }
        .breadcrumb span.sep {
            color: #b1a797;
        }
        .search-bar {
            display: flex;
            gap: 0.4rem;
            margin: 1.2rem 0 0.8rem;
            max-width: 500px;
        }
        .search-bar input {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid #d6cebd;
            border-radius: 40px;
            font-size: 1rem;
            background: #fcfaf7;
            transition: border-color 0.2s;
        }
        .search-bar input:focus {
            border-color: #1d6b2c;
            outline: none;
        }
        .search-bar button {
            padding: 0.7rem 1.4rem;
            background: #2d5a27;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .search-bar button:hover {
            background: #1d3f1a;
        }
        .feature-figure {
            margin: 2rem 0 1.8rem;
            text-align: center;
        }
        .feature-figure img {
            width: 100%;
            max-width: 820px;
            margin: 0 auto;
            border-radius: 14px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .feature-figure figcaption {
            margin-top: 0.6rem;
            font-size: 0.9rem;
            color: #5f735c;
        }
        .user-feedback {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            margin: 3rem 0 1.5rem;
            padding: 2rem 1.5rem;
            background: #f7f3ec;
            border-radius: 16px;
        }
        .feedback-section {
            flex: 1 1 240px;
        }
        .feedback-section h3 {
            margin-top: 0;
            font-size: 1.3rem;
            border-bottom: none;
        }
        .feedback-section form {
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
            margin-top: 0.5rem;
        }
        .feedback-section input,
        .feedback-section textarea,
        .feedback-section select {
            padding: 0.6rem 0.9rem;
            border: 2px solid #d6cebd;
            border-radius: 8px;
            font-size: 0.95rem;
            background: #fffcf7;
            transition: border-color 0.2s;
            width: 100%;
        }
        .feedback-section input:focus,
        .feedback-section textarea:focus,
        .feedback-section select:focus {
            border-color: #1d6b2c;
            outline: none;
        }
        .feedback-section textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-section button {
            padding: 0.6rem 1.2rem;
            background: #b8860b;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            align-self: flex-start;
        }
        .feedback-section button:hover {
            background: #9e7209;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #d4b483;
            cursor: pointer;
        }
        .star-rating i {
            transition: color 0.15s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #c7a54b;
        }
        .site-footer {
            margin-top: 3rem;
            padding: 2rem 0 1.2rem;
            border-top: 3px solid #e0d6c5;
            font-size: 0.95rem;
            color: #3d553a;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.8rem;
            padding: 1rem 0.5rem;
            background: #f0ebe2;
            border-radius: 12px;
            margin-bottom: 1.2rem;
            font-weight: 500;
        }
        friend-link a {
            color: #1d6b2c;
        }
        friend-link a:hover {
            color: #b8860b;
        }
        .copyright {
            text-align: center;
            padding-top: 0.6rem;
            font-size: 0.88rem;
            color: #657f62;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.5rem;
            }
            .container {
                padding: 0 1rem 1.5rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .site-header {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 0.8rem 0 0.4rem;
                gap: 0.3rem;
            }
            .main-nav.open {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .nav-wrapper {
                width: 100%;
                justify-content: space-between;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .search-bar {
                max-width: 100%;
                flex-wrap: wrap;
            }
            .search-bar input {
                flex: 1 1 180px;
            }
            .user-feedback {
                flex-direction: column;
                gap: 1.8rem;
                padding: 1.2rem;
            }
            table {
                font-size: 0.85rem;
            }
            th,
            td {
                padding: 0.5rem 0.6rem;
            }
            friend-link {
                flex-direction: column;
                gap: 0.4rem;
            }
        }
        @media (max-width: 480px) {
            .my-logo {
                font-size: 1.5rem;
            }
            .my-logo small {
                font-size: 0.7rem;
            }
            h1 {
                font-size: 1.5rem;
            }
            h2 {
                font-size: 1.3rem;
            }
        }
        .badge {
            display: inline-block;
            background: #1d6b2c;
            color: #fff;
            padding: 0.15rem 0.8rem;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .highlight {
            background: #fcf2d9;
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
        }
        .emoji-lg {
            font-size: 1.3rem;
        }
        .last-updated {
            font-size: 0.9rem;
            color: #6a8267;
            margin: 0.2rem 0 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .last-updated i {
            color: #b8860b;
        }
        .toc {
            background: #f3efe6;
            padding: 1.2rem 1.8rem;
            border-radius: 14px;
            margin: 1.2rem 0 2rem;
        }
        .toc ul {
            list-style: none;
            margin: 0.6rem 0 0;
        }
        .toc li {
            margin-bottom: 0.3rem;
        }
        .toc a {
            color: #1d6b2c;
        }
        .toc a:hover {
            color: #b8860b;
        }
        .btn-top {
            display: inline-block;
            margin-top: 1rem;
            font-size: 0.9rem;
        }
        .btn-top i {
            margin-right: 4px;
        }