*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f8f9fc;
            color: #1e1e2a;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #d32f2f;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: #b71c1c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: #0b0b14;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 1rem;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #d32f2f;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.25rem;
            word-wrap: break-word;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 0.5rem;
        }
        .site-header {
            background: #0b0b14;
            color: #fff;
            padding: 0.8rem 0;
            border-radius: 0 0 20px 20px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
            position: relative;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            background: linear-gradient(135deg, #d32f2f, #ff8f00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            text-transform: uppercase;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .my-logo span {
            font-weight: 300;
            -webkit-text-fill-color: #fff;
            color: #fff;
            background: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #d32f2f;
            color: #fff;
            font-size: 1.5rem;
            padding: 0.4rem 0.8rem;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            background: #d32f2f;
        }
        .nav-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.2rem 0.8rem;
            list-style: none;
            padding: 0;
            margin: 0;
            align-items: center;
        }
        .nav-list li a {
            color: #ddd;
            font-weight: 500;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: 0.2s;
            font-size: 0.95rem;
        }
        .nav-list li a:hover {
            background: rgba(211, 47, 47, 0.25);
            color: #fff;
            text-decoration: none;
        }
        .breadcrumb {
            background: #fff;
            padding: 0.6rem 1rem;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
            margin: 1rem 0;
            font-size: 0.9rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            list-style: none;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #999;
        }
        .breadcrumb a {
            color: #d32f2f;
        }
        .breadcrumb .active {
            color: #555;
            font-weight: 600;
        }
        .search-section {
            background: #fff;
            padding: 1.5rem 1.5rem 1.8rem;
            border-radius: 18px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
            margin: 1.5rem 0;
            text-align: center;
        }
        .search-section h2 {
            border-left: none;
            padding-left: 0;
            margin-top: 0;
            font-size: 1.5rem;
        }
        .search-form {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            justify-content: center;
            max-width: 600px;
            margin: 1rem auto 0;
        }
        .search-form input[type="text"] {
            flex: 1 1 240px;
            padding: 0.8rem 1.2rem;
            border: 2px solid #e0e0e0;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: 0.2s;
        }
        .search-form input[type="text"]:focus {
            border-color: #d32f2f;
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.15);
        }
        .search-form button {
            background: #d32f2f;
            color: #fff;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #b71c1c;
            transform: scale(1.02);
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin: 2rem 0;
        }
        .main-article {
            background: #fff;
            padding: 2rem 1.5rem;
            border-radius: 20px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
        }
        .main-article .featured-image {
            margin: 1.5rem 0 2rem;
            border-radius: 16px;
            overflow: hidden;
            background: #f0f0f5;
            text-align: center;
        }
        .main-article .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .main-article .featured-image figcaption {
            font-size: 0.85rem;
            color: #777;
            padding: 0.5rem 1rem 0.8rem;
            background: #fafafa;
        }
        .update-badge {
            display: inline-block;
            background: #d32f2f;
            color: #fff;
            padding: 0.2rem 1.2rem;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 1rem;
        }
        .emoji-bullet {
            display: inline-block;
            margin-right: 0.4rem;
        }
        .highlight-box {
            background: #f1f3f8;
            border-left: 5px solid #d32f2f;
            padding: 1.2rem 1.5rem;
            border-radius: 12px;
            margin: 1.8rem 0;
        }
        .highlight-box strong {
            color: #d32f2f;
        }
        .link-inline-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.2rem;
            list-style: none;
            padding: 0.5rem 0;
            margin: 1rem 0 1.5rem;
        }
        .link-inline-list li a {
            background: #f0f0f5;
            padding: 0.3rem 1rem;
            border-radius: 40px;
            font-weight: 500;
            font-size: 0.9rem;
            transition: 0.2s;
            display: inline-block;
        }
        .link-inline-list li a:hover {
            background: #d32f2f;
            color: #fff;
            text-decoration: none;
        }
        .interaction-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 2.5rem 0 1rem;
        }
        .rating-card,
        .comment-card {
            background: #fff;
            padding: 1.8rem 1.5rem;
            border-radius: 18px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
        }
        .rating-card h3,
        .comment-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            margin: 1rem 0 1.2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 2rem;
            color: #ccc;
            cursor: pointer;
            transition: 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5b342;
        }
        .rating-form button,
        .comment-form button {
            background: #d32f2f;
            color: #fff;
            border: none;
            padding: 0.6rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
        }
        .rating-form button:hover,
        .comment-form button:hover {
            background: #b71c1c;
        }
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #e0e0e0;
            border-radius: 12px;
            font-family: inherit;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 90px;
            margin: 0.5rem 0 1rem;
            outline: none;
            transition: 0.2s;
        }
        .comment-form textarea:focus {
            border-color: #d32f2f;
            box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
        }
        .comment-form input[type="text"] {
            width: 100%;
            padding: 0.6rem 1rem;
            border: 2px solid #e0e0e0;
            border-radius: 12px;
            font-size: 0.95rem;
            margin: 0.3rem 0 0.8rem;
            outline: none;
        }
        .comment-form input[type="text"]:focus {
            border-color: #d32f2f;
        }
        .site-footer {
            background: #0b0b14;
            color: #ccc;
            padding: 2rem 1.5rem 1.5rem;
            border-radius: 20px 20px 0 0;
            margin-top: 3rem;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .footer-inner friend-link {
            display: block;
        }
        .footer-inner friend-link h4 {
            color: #fff;
            margin-top: 0;
            font-size: 1.1rem;
            border-left: 3px solid #d32f2f;
            padding-left: 0.8rem;
        }
        .footer-inner friend-link ul {
            list-style: none;
            padding: 0;
            margin: 0.8rem 0 0;
        }
        .footer-inner friend-link ul li {
            margin: 0.3rem 0;
        }
        .footer-inner friend-link ul li a {
            color: #bbb;
            font-size: 0.9rem;
        }
        .footer-inner friend-link ul li a:hover {
            color: #fff;
        }
        .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid #2a2a3a;
            padding-top: 1.2rem;
            margin-top: 1rem;
            text-align: center;
            font-size: 0.85rem;
            color: #888;
        }
        .copyright strong {
            color: #ddd;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: inline-block;
            }
            .nav-list {
                display: none;
                flex-direction: column;
                width: 100%;
                padding: 1rem 0 0.5rem;
                gap: 0.4rem;
                border-top: 1px solid #2a2a3a;
                margin-top: 0.8rem;
            }
            .nav-list.open {
                display: flex;
            }
            .nav-list li a {
                display: block;
                padding: 0.5rem 0.8rem;
                border-radius: 8px;
            }
            .interaction-section {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .main-article {
                padding: 1.5rem 1rem;
            }
            .search-section {
                padding: 1.2rem 1rem;
            }
            .header-inner {
                padding: 0 0.8rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .search-form input[type="text"] {
                flex: 1 1 100%;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .breadcrumb {
                font-size: 0.78rem;
                padding: 0.4rem 0.8rem;
            }
        }
        @media (min-width: 769px) {
            .nav-toggle {
                display: none !important;
            }
            .nav-list {
                display: flex !important;
            }
        }
        .schema-hidden {
            display: none;
        }
        .toc {
            background: #f4f5fa;
            padding: 1.2rem 1.5rem;
            border-radius: 16px;
            margin: 1.5rem 0;
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ol {
            columns: 2 220px;
            column-gap: 2rem;
            padding-left: 1.2rem;
        }
        .toc ol li {
            margin: 0.25rem 0;
            break-inside: avoid;
        }
        .toc ol li a {
            color: #1e1e2a;
            font-weight: 500;
        }
        .toc ol li a:hover {
            color: #d32f2f;
        }
        .btn-small {
            background: #d32f2f;
            color: #fff;
            padding: 0.2rem 1rem;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-block;
            transition: 0.2s;
        }
        .btn-small:hover {
            background: #b71c1c;
            text-decoration: none;
            color: #fff;
        }
        .quote-block {
            font-style: italic;
            background: #f9f9fd;
            padding: 1rem 1.5rem;
            border-radius: 14px;
            border-left: 4px solid #d32f2f;
            margin: 1.5rem 0;
            color: #333;
        }
        .quote-block cite {
            display: block;
            margin-top: 0.5rem;
            font-style: normal;
            font-weight: 600;
            color: #d32f2f;
        }