*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f4f5f7;
            color: #1e1e2a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #b8860b;
            text-decoration: underline;
            transition: all 0.2s ease;
        }
        a:hover,
        a:focus {
            color: #8b6508;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0b0b1a;
            margin-bottom: 0.5rem;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #0b0b1a;
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            border-left: 5px solid #b8860b;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1a1a2e;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #2d2d44;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .lead {
            font-size: 1.2rem;
            color: #2d2d44;
            font-weight: 400;
        }
        .site-header {
            background: linear-gradient(135deg, #0b0b1a 0%, #1a1a2e 100%);
            color: #fff;
            padding: 0 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .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: 1.9rem;
            font-weight: 800;
            color: #ffd700;
            text-decoration: none;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            font-size: 2rem;
            color: #ffd700;
        }
        .my-logo:hover {
            color: #fff3a0;
            text-decoration: none;
        }
        .my-logo span {
            color: #fff;
            font-weight: 300;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #ddd;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.4rem 0;
            border-bottom: 2px solid transparent;
            transition: all 0.2s;
        }
        .main-nav a:hover {
            color: #ffd700;
            border-bottom-color: #ffd700;
        }
        .main-nav a.active {
            color: #ffd700;
            border-bottom-color: #ffd700;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            transition: color 0.2s;
        }
        .hamburger:hover {
            color: #ffd700;
        }
        .nav-toggle {
            display: none;
        }
        .breadcrumbs {
            background: #e8e9ee;
            padding: 0.6rem 20px;
            font-size: 0.9rem;
            color: #555;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }
        .breadcrumbs ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumbs li+li::before {
            content: "›";
            margin-right: 0.8rem;
            color: #999;
        }
        .breadcrumbs a {
            color: #b8860b;
            text-decoration: none;
        }
        .breadcrumbs a:hover {
            text-decoration: underline;
        }
        .hero {
            background: linear-gradient(145deg, #0b0b1a 0%, #1a1a2e 80%);
            color: #fff;
            padding: 3rem 20px 2.5rem;
            text-align: center;
            border-bottom: 4px solid #b8860b;
        }
        .hero h1 {
            color: #ffd700;
            font-size: 2.8rem;
        }
        .hero p {
            font-size: 1.2rem;
            color: #ccc;
            max-width: 780px;
            margin: 0.8rem auto 0;
        }
        .main-content {
            padding: 2rem 20px 3rem;
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 280px;
            gap: 2.5rem;
        }
        .article-body {
            background: #fff;
            border-radius: 12px;
            padding: 2rem 2.5rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
        }
        .sidebar {
            position: sticky;
            top: 90px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 12px;
            padding: 1.5rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            margin-bottom: 1.5rem;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #ffd700;
            padding-bottom: 0.5rem;
            margin-bottom: 1rem;
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card li {
            margin-bottom: 0.6rem;
        }
        .sidebar-card li a {
            color: #1a1a2e;
            text-decoration: none;
            font-weight: 500;
            display: block;
            padding: 0.3rem 0;
            border-bottom: 1px solid #eee;
            transition: color 0.2s;
        }
        .sidebar-card li a:hover {
            color: #b8860b;
        }
        .feature-img-wrap {
            margin: 2rem 0 1.5rem;
            border-radius: 12px;
            overflow: hidden;
            background: #f0f0f5;
        }
        .feature-img-wrap img {
            width: 100%;
            object-fit: cover;
        }
        .feature-img-wrap figcaption {
            padding: 0.6rem 1.2rem;
            font-size: 0.9rem;
            color: #666;
            background: #f8f8fc;
            font-style: italic;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            margin: 1.5rem 0 2rem;
            flex-wrap: wrap;
        }
        .search-form input[type="text"] {
            flex: 1;
            min-width: 200px;
            padding: 0.7rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.2s;
        }
        .search-form input[type="text"]:focus {
            border-color: #b8860b;
            outline: none;
        }
        .search-form button {
            background: #b8860b;
            color: #fff;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #8b6508;
        }
        .interaction-area {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #eee;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .comment-form textarea {
            width: 100%;
            min-height: 120px;
            padding: 0.8rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
            resize: vertical;
            transition: border-color 0.2s;
        }
        .comment-form textarea:focus {
            border-color: #b8860b;
            outline: none;
        }
        .comment-form input[type="text"] {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            margin-bottom: 0.8rem;
            transition: border-color 0.2s;
        }
        .comment-form input[type="text"]:focus {
            border-color: #b8860b;
            outline: none;
        }
        .comment-form .form-row {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .comment-form .form-row input {
            flex: 1;
            min-width: 140px;
        }
        .btn {
            background: #b8860b;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            background: #8b6508;
            transform: translateY(-1px);
        }
        .btn:active {
            transform: translateY(0);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            font-size: 1.8rem;
            margin: 0.5rem 0 1rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #ccc;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #ffd700;
        }
        .rating-display {
            font-size: 0.95rem;
            color: #666;
            margin-top: 0.3rem;
        }
        friend-link {
            display: block;
            padding: 2rem 20px;
            background: #0b0b1a;
            color: #ccc;
            text-align: center;
            border-top: 4px solid #b8860b;
        }
        friend-link .fl-head {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffd700;
            margin-bottom: 1rem;
        }
        friend-link .fl-list {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.8rem 2rem;
            max-width: 900px;
            margin: 0 auto;
        }
        friend-link .fl-list a {
            color: #ddd;
            text-decoration: none;
            font-weight: 500;
            padding: 0.2rem 0.4rem;
            border-bottom: 1px solid transparent;
            transition: all 0.2s;
        }
        friend-link .fl-list a:hover {
            color: #ffd700;
            border-bottom-color: #ffd700;
        }
        .site-footer {
            background: #0b0b1a;
            color: #999;
            padding: 1.5rem 20px;
            text-align: center;
            font-size: 0.9rem;
        }
        .site-footer .copyright {
            color: #777;
            margin-top: 0.3rem;
        }
        .site-footer a {
            color: #ffd700;
            text-decoration: none;
        }
        .site-footer a:hover {
            text-decoration: underline;
        }
        .last-updated {
            display: inline-block;
            background: #f0f0f5;
            padding: 0.3rem 1rem;
            border-radius: 20px;
            font-size: 0.85rem;
            color: #666;
            margin-bottom: 1.5rem;
        }
        @media (max-width: 900px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .article-body {
                order: 1;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 1rem 0 0.5rem;
                gap: 0.6rem;
            }
            .main-nav a {
                font-size: 1.1rem;
                padding: 0.3rem 0;
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            .nav-toggle:checked~.main-nav {
                display: flex;
            }
            .header-inner {
                align-items: center;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .article-body {
                padding: 1.2rem 1.2rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .hero {
                padding: 2rem 12px;
            }
            .article-body {
                padding: 1rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input[type="text"] {
                min-width: auto;
            }
            .breadcrumbs {
                font-size: 0.8rem;
                padding: 0.4rem 12px;
            }
            .star-rating {
                font-size: 1.5rem;
            }
        }
        .highlight {
            background: #fff9e6;
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
        }
        .stat-box {
            background: #f8f8fc;
            border-left: 4px solid #b8860b;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 8px 8px 0;
        }
        .stat-box strong {
            color: #0b0b1a;
        }
        .inline-list {
            list-style: disc;
            padding-left: 1.6rem;
            margin-bottom: 1.2rem;
        }
        .inline-list li {
            margin-bottom: 0.4rem;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }
        .data-table th {
            background: #0b0b1a;
            color: #ffd700;
            padding: 0.7rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 0.6rem 1rem;
            border-bottom: 1px solid #eee;
        }
        .data-table tr:nth-child(even) td {
            background: #fafafa;
        }
        .data-table tr:hover td {
            background: #fff9e6;
        }
        blockquote {
            border-left: 4px solid #b8860b;
            padding: 0.8rem 1.5rem;
            margin: 1.5rem 0;
            background: #f8f8fc;
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: #444;
        }
        blockquote footer {
            margin-top: 0.5rem;
            font-style: normal;
            font-weight: 600;
            color: #0b0b1a;
        }