*,
        *::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, sans-serif;
            line-height: 1.8;
            color: #1e1e2a;
            background: #faf9f6;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #b4532b;
            text-decoration: underline;
            text-underline-offset: 2px;
            transition: color 0.2s ease;
        }
        a:hover,
        a:focus-visible {
            color: #7c3a1e;
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid #b4532b;
            outline-offset: 2px;
            border-radius: 2px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #1a1a2e;
            margin-top: 1.8em;
            margin-bottom: 0.6em;
        }
        h1 {
            font-size: clamp(2rem, 5vw, 2.8rem);
            margin-top: 0.4em;
        }
        h2 {
            font-size: clamp(1.5rem, 3.5vw, 2rem);
            border-bottom: 3px solid #e8d5c4;
            padding-bottom: 0.3em;
        }
        h3 {
            font-size: clamp(1.2rem, 2.5vw, 1.5rem);
        }
        h4 {
            font-size: clamp(1rem, 2vw, 1.2rem);
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2em;
            color: #2d2d3f;
        }
        ul,
        ol {
            margin: 0.8em 0 1.5em 1.8em;
        }
        li {
            margin-bottom: 0.5em;
        }
        blockquote {
            border-left: 5px solid #b4532b;
            background: #f3ede7;
            padding: 1.2em 1.8em;
            margin: 1.5em 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2d2d3f;
        }
        blockquote cite {
            display: block;
            margin-top: 0.6em;
            font-style: normal;
            font-weight: 600;
            color: #7c3a1e;
        }
        hr {
            border: none;
            height: 2px;
            background: linear-gradient(90deg, #e8d5c4, transparent);
            margin: 2.5em 0;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1a1a2e 0%, #2d1f3d 100%);
            color: #f5f0eb;
            padding: 0 0 0 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.8rem 20px;
            max-width: 1200px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #f5e6d3;
            text-decoration: none;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            transition: opacity 0.2s;
        }
        .my-logo:hover {
            opacity: 0.85;
            color: #f5e6d3;
        }
        .my-logo i {
            color: #e8b88a;
            font-size: 1.6rem;
        }
        .my-logo span {
            font-weight: 300;
            color: #e8b88a;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 1.2rem;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 0.2rem;
            margin: 0;
            padding: 0;
        }
        .nav-menu li a {
            color: #f0e8e0;
            text-decoration: none;
            padding: 0.5rem 0.9rem;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.25s, color 0.25s;
            display: inline-block;
        }
        .nav-menu li a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #e8b88a;
        }
        .nav-menu li a.active {
            background: rgba(232, 184, 138, 0.18);
            color: #e8b88a;
        }
        .hamburger {
            display: none;
            background: transparent;
            border: none;
            color: #f5e6d3;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            transition: color 0.2s;
        }
        .hamburger:hover {
            color: #e8b88a;
        }
        .breadcrumb-wrap {
            background: #f3ede7;
            padding: 0.6rem 20px;
            border-bottom: 1px solid #e0d3c8;
            font-size: 0.85rem;
        }
        .breadcrumb-wrap .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb-wrap a {
            color: #7c3a1e;
            text-decoration: none;
        }
        .breadcrumb-wrap a:hover {
            text-decoration: underline;
        }
        .breadcrumb-wrap span {
            color: #5a4a3a;
        }
        .breadcrumb-wrap .sep {
            color: #b08f7a;
            margin: 0 0.2rem;
        }
        .main-content {
            padding: 2rem 0 3rem;
        }
        .article-body {
            background: #ffffff;
            border-radius: 20px;
            padding: 2.5rem 2.8rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
        }
        @media (max-width: 768px) {
            .article-body {
                padding: 1.5rem 1.2rem;
                border-radius: 12px;
            }
        }
        .last-updated {
            display: inline-block;
            background: #f3ede7;
            padding: 0.3rem 1.2rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #5a4a3a;
            margin-bottom: 1.2rem;
        }
        .last-updated i {
            margin-right: 0.4rem;
            color: #b4532b;
        }
        .featured-figure {
            margin: 1.8em 0 2.2em;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
        }
        .featured-figure img {
            width: 100%;
            object-fit: cover;
            aspect-ratio: 16/9;
            background: #e8d5c4;
        }
        .featured-figure figcaption {
            background: #faf7f4;
            padding: 0.8rem 1.2rem;
            font-size: 0.85rem;
            color: #5a4a3a;
            border-top: 1px solid #e8d5c4;
        }
        .toc {
            background: #f8f4f0;
            border: 1px solid #e8d5c4;
            border-radius: 14px;
            padding: 1.5rem 2rem;
            margin: 1.8em 0 2.5em;
        }
        .toc strong {
            display: block;
            font-size: 1.1rem;
            margin-bottom: 0.6rem;
            color: #1a1a2e;
        }
        .toc ul {
            list-style: none;
            margin: 0;
            padding: 0;
            columns: 2 220px;
            column-gap: 2rem;
        }
        .toc ul li {
            margin-bottom: 0.3rem;
            break-inside: avoid;
        }
        .toc ul li a {
            color: #7c3a1e;
            text-decoration: none;
            font-size: 0.92rem;
            display: inline-block;
            padding: 0.15rem 0;
        }
        .toc ul li a:hover {
            text-decoration: underline;
        }
        .search-section {
            background: #f3ede7;
            border-radius: 14px;
            padding: 1.8rem 2rem;
            margin: 2em 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
        }
        .search-section label {
            font-weight: 600;
            color: #1a1a2e;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form {
            display: flex;
            flex: 1 1 300px;
            gap: 0.6rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.7rem 1.2rem;
            border: 2px solid #dccfc4;
            border-radius: 40px;
            font-size: 0.95rem;
            background: #fff;
            transition: border 0.25s;
            outline: none;
        }
        .search-form input:focus {
            border-color: #b4532b;
        }
        .search-form button {
            background: #b4532b;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0.7rem 1.6rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #7c3a1e;
            transform: scale(1.02);
        }
        .search-form button i {
            font-size: 0.9rem;
        }
        .user-feedback {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            margin: 2.5em 0 1.5em;
            padding-top: 1.5em;
            border-top: 2px solid #e8d5c4;
        }
        .feedback-card {
            flex: 1 1 280px;
            background: #faf7f4;
            border-radius: 16px;
            padding: 1.8rem 1.8rem 2rem;
            border: 1px solid #e8d5c4;
        }
        .feedback-card h4 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            color: #1a1a2e;
        }
        .feedback-card h4 i {
            color: #b4532b;
        }
        .feedback-form textarea,
        .feedback-form input,
        .score-form select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dccfc4;
            border-radius: 10px;
            font-size: 0.95rem;
            background: #fff;
            margin-bottom: 0.8rem;
            transition: border 0.25s;
            outline: none;
            font-family: inherit;
        }
        .feedback-form textarea:focus,
        .feedback-form input:focus,
        .score-form select:focus {
            border-color: #b4532b;
        }
        .feedback-form textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-form button,
        .score-form button {
            background: #b4532b;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0.6rem 1.8rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            font-size: 0.95rem;
        }
        .feedback-form button:hover,
        .score-form button:hover {
            background: #7c3a1e;
            transform: scale(1.02);
        }
        .score-form .star-wrapper {
            display: flex;
            gap: 0.4rem;
            margin-bottom: 0.8rem;
            font-size: 1.6rem;
            color: #dccfc4;
            cursor: pointer;
        }
        .score-form .star-wrapper i.active {
            color: #e8b88a;
        }
        .score-form select {
            width: auto;
            min-width: 120px;
        }
        .site-footer {
            background: #1a1a2e;
            color: #d9d0c8;
            padding: 2.5rem 20px 1.5rem;
            margin-top: 2rem;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 2rem 3rem;
            justify-content: space-between;
        }
        .footer-col {
            flex: 1 1 200px;
        }
        .footer-col h5 {
            color: #e8b88a;
            font-size: 1rem;
            margin: 0 0 0.8rem;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            color: #cbbeb5;
            text-decoration: none;
            display: block;
            padding: 0.2rem 0;
            font-size: 0.9rem;
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: #e8b88a;
        }
        friend-link {
            display: block;
            margin-top: 1.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid #3a2a4a;
            font-size: 0.9rem;
            width: 100%;
        }
        friend-link a {
            color: #cbbeb5;
            text-decoration: underline;
            display: inline-block;
            margin-right: 1.2rem;
            padding: 0.2rem 0;
        }
        friend-link a:hover {
            color: #e8b88a;
        }
        .copyright {
            text-align: center;
            padding-top: 1.8rem;
            margin-top: 1.8rem;
            border-top: 1px solid #2d1f3d;
            font-size: 0.85rem;
            color: #a89686;
            width: 100%;
        }
        .copyright strong {
            color: #d9d0c8;
        }
        @media (max-width: 900px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                background: #1a1a2e;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                padding: 1rem 20px 1.5rem;
                border-top: 1px solid #3a2a4a;
                box-shadow: 0 20px 30px rgba(0, 0, 0, 0.3);
                border-radius: 0 0 16px 16px;
                gap: 0.2rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                padding: 0.6rem 0.8rem;
                font-size: 1rem;
            }
            .hamburger {
                display: block;
            }
            .header-inner {
                padding: 0.6rem 20px;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .toc ul {
                columns: 1;
            }
            .search-section {
                flex-direction: column;
                align-items: stretch;
            }
            .user-feedback {
                flex-direction: column;
            }
        }
        @media (max-width: 480px) {
            .article-body {
                padding: 1rem 0.8rem;
            }
            .featured-figure {
                border-radius: 10px;
            }
            .feedback-card {
                padding: 1.2rem;
            }
            .search-form {
                flex-wrap: wrap;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .footer-inner {
                flex-direction: column;
                gap: 1.5rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .highlight {
            background: #fcf2e9;
            padding: 0.1em 0.3em;
            border-radius: 4px;
            font-weight: 600;
        }
        .badge {
            display: inline-block;
            background: #e8d5c4;
            color: #1a1a2e;
            padding: 0.15em 1em;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
        }