* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #faf7f2;
            color: #1e1e1e;
            line-height: 1.7;
            padding: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #c0392b;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus {
            color: #a93226;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.25rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        .site-header {
            background: linear-gradient(145deg, #1a3a4a 0%, #0f2c38 100%);
            padding: 0.75rem 0;
            border-bottom: 4px solid #e67e22;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f5e6d3;
            text-shadow: 2px 2px 0 #c0392b;
            transition: transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #f5e6d3;
        }
        .my-logo i {
            font-size: 1.6rem;
            color: #e67e22;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #f5e6d3;
            color: #f5e6d3;
            font-size: 1.5rem;
            padding: 0.3rem 0.8rem;
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
        }
        .nav-menu li a {
            display: block;
            padding: 0.5rem 1rem;
            color: #f5e6d3;
            font-weight: 500;
            font-size: 0.95rem;
            border-radius: 30px;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .nav-menu li a:hover,
        .nav-menu li a:focus {
            background: #e67e22;
            color: #fff;
            text-decoration: none;
        }
        .nav-menu li a i {
            margin-right: 0.3rem;
            font-size: 0.85rem;
        }
        .breadcrumb {
            background: #f0ebe3;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #ddd6cb;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb ol li+li::before {
            content: "›";
            margin-right: 0.4rem;
            color: #999;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #7f6b5a;
        }
        .breadcrumb a:hover {
            color: #c0392b;
        }
        .breadcrumb .current {
            color: #3a2a1e;
            font-weight: 600;
        }
        .main-content {
            padding: 2rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2.5rem;
        }
        .article-body h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #0f2c38;
            line-height: 1.2;
            margin-bottom: 0.25rem;
            border-left: 6px solid #e67e22;
            padding-left: 1rem;
        }
        .article-body .subhead {
            font-size: 1.1rem;
            color: #5a4a3a;
            margin-bottom: 1.5rem;
            font-style: italic;
        }
        .article-body .update-date {
            display: inline-block;
            background: #e8e0d6;
            padding: 0.25rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #5a4a3a;
            margin-bottom: 1.5rem;
        }
        .article-body .update-date i {
            margin-right: 0.4rem;
        }
        .article-body h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #1a3a4a;
            margin-top: 2.5rem;
            margin-bottom: 0.75rem;
            padding-bottom: 0.3rem;
            border-bottom: 3px solid #e67e22;
        }
        .article-body h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #2c3e50;
            margin-top: 2rem;
            margin-bottom: 0.5rem;
        }
        .article-body h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #3d2c1e;
            margin-top: 1.5rem;
            margin-bottom: 0.3rem;
        }
        .article-body p {
            margin-bottom: 1.25rem;
            font-size: 1.05rem;
            color: #2a2a2a;
        }
        .article-body strong {
            color: #c0392b;
        }
        .article-body .highlight-box {
            background: #f0ebe3;
            border-left: 5px solid #e67e22;
            padding: 1.25rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .article-body .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 1.5rem;
            padding-left: 1.5rem;
        }
        .article-body li {
            margin-bottom: 0.5rem;
            font-size: 1.05rem;
        }
        .featured-image {
            margin: 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
            background: #e8e0d6;
        }
        .featured-image img {
            width: 100%;
            height: auto;
            aspect-ratio: 1200/630;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.75rem 1rem;
            font-size: 0.9rem;
            color: #5a4a3a;
            background: #f5f0e9;
            font-style: italic;
        }
        .sidebar {
            position: sticky;
            top: 90px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            margin-bottom: 1.5rem;
            border: 1px solid #e8e0d6;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #1a3a4a;
            margin-bottom: 1rem;
            border-bottom: 2px solid #e67e22;
            padding-bottom: 0.4rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card ul li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0ebe3;
        }
        .sidebar-card ul li a {
            color: #2c3e50;
            font-weight: 500;
        }
        .sidebar-card ul li a:hover {
            color: #c0392b;
        }
        .sidebar-card ul li a i {
            color: #e67e22;
            margin-right: 0.5rem;
            font-size: 0.8rem;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            margin-top: 0.5rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid #ddd6cb;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s;
            background: #faf7f2;
        }
        .search-form input:focus {
            border-color: #e67e22;
        }
        .search-form button {
            background: #c0392b;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0.7rem 1.3rem;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .search-form button:hover {
            background: #a93226;
            transform: scale(1.02);
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .feedback-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid #e8e0d6;
        }
        .feedback-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #1a3a4a;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .feedback-card h3 i {
            color: #e67e22;
        }
        .feedback-form textarea,
        .feedback-form input,
        .feedback-form select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #ddd6cb;
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: border 0.2s;
            background: #faf7f2;
            margin-bottom: 0.8rem;
        }
        .feedback-form textarea:focus,
        .feedback-form input:focus,
        .feedback-form select:focus {
            border-color: #e67e22;
        }
        .feedback-form textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-form .star-rating {
            display: flex;
            gap: 0.3rem;
            flex-direction: row-reverse;
            justify-content: flex-end;
            margin-bottom: 0.8rem;
        }
        .feedback-form .star-rating input {
            display: none;
        }
        .feedback-form .star-rating label {
            font-size: 1.8rem;
            color: #ddd6cb;
            cursor: pointer;
            transition: color 0.2s;
        }
        .feedback-form .star-rating input:checked~label,
        .feedback-form .star-rating label:hover,
        .feedback-form .star-rating label:hover~label {
            color: #f1c40f;
        }
        .feedback-form .btn-submit {
            background: #e67e22;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0.7rem 2rem;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            width: 100%;
        }
        .feedback-form .btn-submit:hover {
            background: #d35400;
            transform: scale(1.01);
        }
        friend-link {
            display: block;
            padding: 1.5rem 0;
            border-top: 2px solid #e8e0d6;
            margin-top: 2rem;
        }
        friend-link h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #1a3a4a;
            margin-bottom: 1rem;
        }
        friend-link ul {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.5rem;
            list-style: none;
            padding: 0;
        }
        friend-link ul li a {
            color: #5a4a3a;
            font-size: 0.95rem;
            border-bottom: 1px dotted transparent;
        }
        friend-link ul li a:hover {
            border-bottom-color: #c0392b;
            color: #c0392b;
        }
        .site-footer {
            background: #0f2c38;
            color: #ddd6cb;
            padding: 2rem 0 1.5rem;
            margin-top: 2rem;
            font-size: 0.95rem;
        }
        .site-footer .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .site-footer .copyright {
            color: #b8a99a;
        }
        .site-footer .copyright i {
            margin-right: 0.3rem;
        }
        .site-footer a {
            color: #e8d5c4;
        }
        .site-footer a:hover {
            color: #f5e6d3;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                background: #0f2c38;
                padding: 0.75rem 0;
                border-radius: 12px;
                margin-top: 0.5rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                padding: 0.7rem 1.2rem;
                border-radius: 0;
                white-space: normal;
            }
            .article-body h1 {
                font-size: 1.8rem;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .feedback-section {
                grid-template-columns: 1fr;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .header-inner {
                gap: 0.5rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .site-footer .footer-inner {
                flex-direction: column;
                text-align: center;
            }
            friend-link ul {
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 1rem;
            }
            .article-body h1 {
                font-size: 1.5rem;
                padding-left: 0.75rem;
            }
            .article-body p {
                font-size: 1rem;
            }
            .feedback-card {
                padding: 1.25rem;
            }
        }
        .author-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: #e8e0d6;
            padding: 0.4rem 1rem 0.4rem 0.6rem;
            border-radius: 30px;
            font-size: 0.9rem;
            margin-bottom: 1rem;
        }
        .author-badge i {
            color: #e67e22;
            font-size: 1.2rem;
        }
        :target {
            scroll-margin-top: 80px;
        }