*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', 'Roboto', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f9f7f4;
            color: #1e1a17;
            line-height: 1.7;
            font-size: 1.0625rem;
            padding: 0;
        }
        a {
            color: #b45309;
            text-decoration: underline;
            text-underline-offset: 2px;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #7a2e0e;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.25rem;
            margin-bottom: 1.25rem;
        }
        li {
            margin-bottom: 0.35rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: #2d1f13;
            margin-top: 1.8rem;
            margin-bottom: 0.75rem;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.5rem;
            border-bottom: 4px solid #d97706;
            padding-bottom: 0.5rem;
            display: inline-block;
        }
        h2 {
            font-size: 1.9rem;
            border-left: 6px solid #d97706;
            padding-left: 0.9rem;
            margin-top: 2.8rem;
        }
        h3 {
            font-size: 1.5rem;
            margin-top: 2rem;
        }
        h4 {
            font-size: 1.25rem;
            margin-top: 1.4rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.15rem;
        }
        strong,
        b {
            color: #2d1f13;
            font-weight: 700;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        .site-header {
            background: linear-gradient(135deg, #1e0f06 0%, #3b1f0d 50%, #5a2d14 100%);
            color: #fef3c7;
            padding: 0.75rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.75rem 1.25rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: 1px;
            color: #fbbf24;
            text-decoration: none;
            font-family: 'Georgia', 'Times New Roman', serif;
            text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.5);
            transition: transform 0.25s ease;
            display: inline-block;
        }
        .my-logo:hover {
            transform: scale(1.02);
            color: #fcd34d;
        }
        .my-logo small {
            font-size: 0.65rem;
            font-weight: 400;
            display: block;
            color: #d4a373;
            letter-spacing: 2px;
            text-shadow: none;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #fef3c7;
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.25s ease, color 0.25s ease;
        }
        .main-nav a:hover {
            border-bottom-color: #fbbf24;
            color: #fbbf24;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #fbbf24;
            color: #fbbf24;
            font-size: 1.6rem;
            padding: 0.25rem 0.6rem;
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.2s ease;
        }
        .nav-toggle:hover {
            background: rgba(251, 191, 36, 0.15);
        }
        .breadcrumb {
            background: #ede4d8;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d6c8b8;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.35rem 0.65rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #8b7a66;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #7a3e1a;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #4d3422;
            font-weight: 600;
        }
        .hero-figure {
            margin: 1.8rem 0 2.2rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            background: #e7d9cb;
        }
        .hero-figure img {
            width: 100%;
            max-height: 520px;
            object-fit: cover;
        }
        .hero-figure figcaption {
            padding: 0.7rem 1.2rem;
            background: #f1ebe4;
            font-size: 0.9rem;
            color: #4d3422;
            font-style: italic;
        }
        .search-block {
            background: #f1ebe4;
            border-radius: 14px;
            padding: 1.4rem 1.8rem;
            margin: 2rem 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            border: 1px solid #d6c8b8;
        }
        .search-block label {
            font-weight: 600;
            color: #2d1f13;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 1.05rem;
        }
        .search-block form {
            display: flex;
            flex: 1 1 300px;
            gap: 0.5rem;
        }
        .search-block input[type="text"] {
            flex: 1;
            padding: 0.6rem 1rem;
            border: 2px solid #c4b4a2;
            border-radius: 8px;
            font-size: 1rem;
            background: #fffcf9;
            transition: border-color 0.2s ease;
        }
        .search-block input[type="text"]:focus {
            outline: none;
            border-color: #b45309;
        }
        .search-block button {
            background: #b45309;
            color: #fff;
            border: none;
            padding: 0.6rem 1.4rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s ease;
            font-size: 1rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-block button:hover {
            background: #7a2e0e;
        }
        .interaction-forms {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2.5rem 0;
        }
        .interaction-card {
            background: #fffcf9;
            border-radius: 16px;
            padding: 1.6rem 1.8rem;
            border: 1px solid #e1d5c7;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
        }
        .interaction-card h3 {
            margin-top: 0;
            font-size: 1.35rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #2d1f13;
        }
        .interaction-card form {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            margin-top: 0.75rem;
        }
        .interaction-card input,
        .interaction-card textarea,
        .interaction-card select {
            padding: 0.6rem 1rem;
            border: 2px solid #d6c8b8;
            border-radius: 8px;
            font-size: 1rem;
            background: #fffcf9;
            font-family: inherit;
            transition: border-color 0.2s ease;
        }
        .interaction-card input:focus,
        .interaction-card textarea:focus,
        .interaction-card select:focus {
            outline: none;
            border-color: #b45309;
        }
        .interaction-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .interaction-card button {
            background: #2d1f13;
            color: #fef3c7;
            border: none;
            padding: 0.65rem 1.5rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s ease;
            align-self: flex-start;
            font-size: 1rem;
        }
        .interaction-card button:hover {
            background: #5a2d14;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.15rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #d6c8b8;
            cursor: pointer;
            transition: color 0.15s ease;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f59e0b;
        }
        .toc {
            background: #f1ebe4;
            border-radius: 14px;
            padding: 1.4rem 1.8rem;
            margin: 2rem 0 2.5rem;
            border: 1px solid #d6c8b8;
        }
        .toc summary {
            font-weight: 700;
            font-size: 1.25rem;
            cursor: pointer;
            color: #2d1f13;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .toc ol {
            margin: 0.75rem 0 0;
            padding-left: 1.2rem;
            columns: 2 240px;
            column-gap: 2rem;
        }
        .toc li {
            margin-bottom: 0.3rem;
            break-inside: avoid;
        }
        .toc a {
            text-decoration: none;
            color: #7a3e1a;
        }
        .toc a:hover {
            text-decoration: underline;
        }
        .site-footer {
            background: #1e0f06;
            color: #e7d9cb;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3.5rem;
            border-top: 4px solid #b45309;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem 1.5rem;
        }
        .site-footer h4 {
            color: #fbbf24;
            margin-top: 0;
            font-size: 1.15rem;
            border-bottom: 1px solid #4d3422;
            padding-bottom: 0.4rem;
        }
        .site-footer a {
            color: #d4a373;
            text-decoration: none;
        }
        .site-footer a:hover {
            color: #fbbf24;
            text-decoration: underline;
        }
        friend-link {
            display: block;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1rem;
            margin-bottom: 0.3rem;
        }
        .copyright {
            border-top: 1px solid #4d3422;
            padding-top: 1.2rem;
            margin-top: 2rem;
            text-align: center;
            font-size: 0.9rem;
            color: #a89480;
        }
        .copyright strong {
            color: #e7d9cb;
        }
        @media (max-width: 820px) {
            .interaction-forms {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .header-inner {
                flex-direction: column;
                align-items: stretch;
            }
            .nav-toggle {
                display: block;
                align-self: flex-end;
                margin-top: -2.6rem;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0.5rem;
                padding: 0.75rem 0 0.25rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.4rem 0.5rem;
                border-bottom: 1px solid rgba(251, 191, 36, 0.2);
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .toc ol {
                columns: 1;
            }
            .search-block {
                flex-direction: column;
                align-items: stretch;
            }
            .search-block form {
                flex-direction: column;
            }
        }
        @media (max-width: 480px) {
            body {
                font-size: 1rem;
            }
            .container {
                padding: 0 0.9rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.35rem;
                padding-left: 0.6rem;
            }
            .interaction-card {
                padding: 1.2rem;
            }
            .hero-figure {
                margin: 1rem 0 1.5rem;
            }
        }
        .update-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: #ede4d8;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #4d3422;
            border: 1px solid #d6c8b8;
            margin-bottom: 0.5rem;
        }
        .highlight-box {
            background: #fef9ec;
            border-left: 6px solid #d97706;
            padding: 1.2rem 1.6rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .two-col-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.4rem 1.8rem;
        }
        @media (max-width: 600px) {
            .two-col-list {
                grid-template-columns: 1fr;
            }
        }
        .emoji-big {
            font-size: 1.3em;
            line-height: 1;
        }