*,
        *::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: #1e2a3a;
            background: #fafaf8;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        a {
            color: #b45309;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus-visible {
            color: #78350f;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.6rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #1e2a3a;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #2d3a4a;
            margin-top: 2.8rem;
            margin-bottom: 0.9rem;
            border-left: 5px solid #b45309;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #3a4a5a;
            margin-top: 2rem;
            margin-bottom: 0.6rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #4a5a6a;
            margin-top: 1.4rem;
            margin-bottom: 0.4rem;
        }
        p {
            margin-bottom: 1.2rem;
            color: #2e3a4a;
        }
        strong {
            font-weight: 700;
            color: #1e2a3a;
        }
        .highlight {
            background: #fef3c7;
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 0;
            border-bottom: 2px solid #e5e7eb;
            position: relative;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: #b45309;
            letter-spacing: -0.03em;
            line-height: 1;
            text-decoration: none;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #78350f;
        }
        .my-logo span {
            font-weight: 300;
            color: #6b7a8a;
            font-size: 1rem;
            display: block;
            letter-spacing: 0.3em;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1e2a3a;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #f3f4f6;
        }
        .nav-menu {
            display: flex;
            gap: 1.8rem;
            align-items: center;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .nav-menu li a {
            font-weight: 500;
            color: #2e3a4a;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
        }
        .nav-menu li a:hover {
            border-bottom-color: #b45309;
            color: #b45309;
            text-decoration: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            color: #6b7a8a;
            list-style: none;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #b45309;
            font-weight: 700;
            margin-right: 0.4rem;
        }
        .breadcrumb a {
            color: #6b7a8a;
        }
        .breadcrumb a:hover {
            color: #b45309;
        }
        .breadcrumb .active {
            color: #1e2a3a;
            font-weight: 600;
        }
        .hero {
            padding: 2.5rem 0 1.5rem;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 2rem;
            font-size: 0.95rem;
            color: #6b7a8a;
            margin-bottom: 1.2rem;
        }
        .hero-meta i {
            color: #b45309;
            margin-right: 0.4rem;
        }
        .search-form {
            display: flex;
            max-width: 520px;
            margin: 1.6rem 0 2rem;
            border-radius: 40px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            border: 1px solid #e5e7eb;
            transition: box-shadow 0.2s;
        }
        .search-form:focus-within {
            box-shadow: 0 2px 20px rgba(180, 83, 9, 0.15);
            border-color: #b45309;
        }
        .search-form input {
            flex: 1;
            padding: 0.9rem 1.4rem;
            border: none;
            font-size: 1rem;
            background: #fff;
            outline: none;
            font-family: inherit;
        }
        .search-form button {
            background: #b45309;
            color: #fff;
            border: none;
            padding: 0 1.6rem;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-form button:hover {
            background: #78350f;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 2.8rem;
            margin-top: 1.2rem;
        }
        .content-main {
            min-width: 0;
        }
        .content-sidebar {
            position: sticky;
            top: 2rem;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.6rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #f0f0ee;
            margin-bottom: 1.6rem;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-top: 0;
            margin-bottom: 0.8rem;
            color: #1e2a3a;
            border-left: 3px solid #b45309;
            padding-left: 0.8rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card ul li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f3f4f6;
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .sidebar-card ul li a i {
            color: #b45309;
            font-size: 0.8rem;
        }
        .featured-image {
            margin: 2rem 0;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
            background: #f0f0ee;
        }
        .featured-image img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .featured-image figcaption {
            padding: 0.8rem 1.2rem;
            font-size: 0.9rem;
            color: #6b7a8a;
            background: #fff;
            border-top: 1px solid #f0f0ee;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6rem 0;
            font-size: 0.95rem;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        .data-table th {
            background: #1e2a3a;
            color: #fff;
            font-weight: 600;
            padding: 0.8rem 1rem;
            text-align: left;
        }
        .data-table td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid #f0f0ee;
            background: #fff;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: #fef9ee;
        }
        .feedback-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #e5e7eb;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .feedback-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.8rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #f0f0ee;
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .feedback-card h3 i {
            color: #b45309;
        }
        .feedback-form label {
            display: block;
            font-weight: 600;
            margin-top: 1rem;
            margin-bottom: 0.3rem;
            font-size: 0.95rem;
        }
        .feedback-form input,
        .feedback-form textarea,
        .feedback-form select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1px solid #d1d5db;
            border-radius: 8px;
            font-family: inherit;
            font-size: 0.95rem;
            transition: border-color 0.2s;
            background: #fafaf8;
        }
        .feedback-form input:focus,
        .feedback-form textarea:focus,
        .feedback-form select:focus {
            border-color: #b45309;
            outline: none;
            box-shadow: 0 0 0 3px rgba(180, 83, 9, 0.1);
        }
        .feedback-form textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-form .btn {
            margin-top: 1.2rem;
            background: #b45309;
            color: #fff;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .feedback-form .btn:hover {
            background: #78350f;
            transform: translateY(-1px);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 0.2rem;
            justify-content: flex-end;
            margin-top: 0.3rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f59e0b;
        }
        .site-footer {
            margin-top: 4rem;
            padding: 2.5rem 0 1.5rem;
            border-top: 2px solid #e5e7eb;
        }
        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-content h4 {
            color: #1e2a3a;
            margin-top: 0;
            font-size: 1.1rem;
        }
        .footer-content ul {
            list-style: none;
            padding: 0;
        }
        .footer-content ul li {
            padding: 0.2rem 0;
        }
        .footer-content ul li a {
            color: #5a6a7a;
        }
        .footer-content ul li a:hover {
            color: #b45309;
        }
        friend-link {
            display: block;
            padding: 1rem 0;
            font-style: normal;
        }
        friend-link a {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            margin: 0.2rem 0.4rem 0.2rem 0;
            background: #f3f4f6;
            border-radius: 20px;
            font-size: 0.9rem;
            color: #2e3a4a;
            transition: background 0.2s, color 0.2s;
        }
        friend-link a:hover {
            background: #b45309;
            color: #fff;
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #e5e7eb;
            font-size: 0.9rem;
            color: #6b7a8a;
        }
        .copyright strong {
            color: #1e2a3a;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .content-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1.2rem;
            }
            .footer-content {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            body {
                padding: 0 16px;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .my-logo {
                font-size: 1.8rem;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #fff;
                padding: 1rem 0;
                gap: 0.2rem;
                border-top: 1px solid #e5e7eb;
                margin-top: 0.8rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                display: block;
                padding: 0.6rem 0;
                border-bottom: none;
            }
            .nav-toggle {
                display: block;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .content-sidebar {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .hero-meta {
                flex-direction: column;
                gap: 0.3rem;
            }
            .data-table {
                font-size: 0.85rem;
            }
            .data-table th,
            .data-table td {
                padding: 0.5rem 0.6rem;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.6rem;
            }
            .search-form input {
                padding: 0.7rem 1rem;
                font-size: 0.9rem;
            }
            .search-form button {
                padding: 0 1rem;
            }
            .feedback-card {
                padding: 1.2rem;
            }
        }
        :focus-visible {
            outline: 3px solid #b45309;
            outline-offset: 2px;
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                transition: none !important;
                animation: none !important;
            }
        }