*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f8fafc;
            color: #0f172a;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #1d4ed8;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #b91c1c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            color: #0f172a;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            font-weight: 700;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 3px solid #e11d48;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #1e293b;
        }
        h4 {
            font-size: 1.15rem;
            color: #334155;
        }
        p {
            margin-bottom: 1.25rem;
        }
        .container {
            max-width: 1120px;
            margin: 0 auto;
            background: #ffffff;
            padding: 1.5rem 2rem;
            border-radius: 20px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
        }
        .text-center {
            text-align: center;
        }
        .text-muted {
            color: #64748b;
            font-size: 0.92rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .flex {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .container {
                padding: 1rem 1.2rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            body {
                padding: 0 0.5rem;
            }
        }
        .site-header {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #fff;
            padding: 1rem 0;
            border-radius: 16px 16px 0 0;
            margin-bottom: 0;
        }
        .site-header .container {
            background: transparent;
            box-shadow: none;
            padding: 0.5rem 2rem;
            color: #fff;
        }
        .header-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            text-decoration: none;
            background: linear-gradient(135deg, #facc15, #e11d48);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .nav-links li a {
            color: #e2e8f0;
            font-weight: 500;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .nav-links li a:hover {
            color: #facc15;
            border-bottom-color: #facc15;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #fff;
            cursor: pointer;
            padding: 0.25rem 0.5rem;
        }
        #nav-toggle {
            display: none;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #1e293b;
                padding: 1rem;
                border-radius: 12px;
                margin-top: 1rem;
                gap: 0.75rem;
            }
            #nav-toggle:checked~.nav-links {
                display: flex;
            }
            .header-row {
                align-items: center;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.75rem 0;
            font-size: 0.9rem;
            color: #94a3b8;
            background: transparent;
            gap: 0.3rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.5rem;
            color: #64748b;
        }
        .breadcrumb a {
            color: #94a3b8;
        }
        .breadcrumb a:hover {
            color: #facc15;
        }
        .breadcrumb .active {
            color: #facc15;
        }
        .search-box {
            background: #f1f5f9;
            padding: 1.5rem 2rem;
            border-radius: 16px;
            margin: 2rem 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            align-items: center;
            justify-content: center;
        }
        .search-box input[type="text"] {
            flex: 1 1 260px;
            padding: 0.75rem 1.2rem;
            border: 2px solid #cbd5e1;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: 0.2s;
        }
        .search-box input[type="text"]:focus {
            border-color: #e11d48;
            box-shadow: 0 0 0 4px rgba(225, 29, 72, 0.15);
        }
        .search-box button {
            padding: 0.75rem 2rem;
            background: #e11d48;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-box button:hover {
            background: #be123c;
            transform: scale(1.02);
        }
        .interaction-area {
            background: #f8fafc;
            border-radius: 20px;
            padding: 2rem;
            margin: 2.5rem 0;
            border: 1px solid #e2e8f0;
        }
        .interaction-area .flex {
            align-items: flex-start;
        }
        .comment-form textarea {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 2px solid #cbd5e1;
            border-radius: 12px;
            font-size: 1rem;
            resize: vertical;
            min-height: 100px;
            font-family: inherit;
            transition: 0.2s;
        }
        .comment-form textarea:focus {
            border-color: #e11d48;
            box-shadow: 0 0 0 4px rgba(225, 29, 72, 0.1);
            outline: none;
        }
        .comment-form input[type="text"] {
            padding: 0.65rem 1rem;
            border: 2px solid #cbd5e1;
            border-radius: 40px;
            font-size: 1rem;
            flex: 1 1 200px;
            transition: 0.2s;
        }
        .comment-form input[type="text"]:focus {
            border-color: #e11d48;
            outline: none;
            box-shadow: 0 0 0 4px rgba(225, 29, 72, 0.1);
        }
        .btn-primary {
            background: #1d4ed8;
            color: #fff;
            border: none;
            padding: 0.65rem 1.8rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
        }
        .btn-primary:hover {
            background: #1e40af;
            transform: scale(1.02);
        }
        .btn-score {
            background: #f59e0b;
            color: #fff;
            border: none;
            padding: 0.65rem 1.4rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
        }
        .btn-score:hover {
            background: #d97706;
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            gap: 0.25rem;
            font-size: 1.6rem;
            color: #f59e0b;
            cursor: pointer;
        }
        .star-rating i {
            transition: 0.15s;
        }
        .star-rating i:hover {
            transform: scale(1.25);
            color: #fbbf24;
        }
        .feature-img {
            margin: 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
        }
        .feature-img img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .feature-img figcaption {
            padding: 0.75rem 1rem;
            background: #f1f5f9;
            font-size: 0.9rem;
            color: #475569;
            text-align: center;
        }
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            border-radius: 0 0 16px 16px;
            padding: 2rem 0 1rem;
            margin-top: 2rem;
        }
        .site-footer .container {
            background: transparent;
            box-shadow: none;
            color: #cbd5e1;
        }
        friend-link {
            display: block;
            padding: 1rem 0;
            border-top: 1px solid #334155;
            border-bottom: 1px solid #334155;
            margin: 1.5rem 0;
        }
        friend-link a {
            color: #facc15;
            display: inline-block;
            margin: 0.3rem 1rem 0.3rem 0;
        }
        friend-link a:hover {
            color: #fff;
        }
        .copyright {
            font-size: 0.85rem;
            text-align: center;
            padding-top: 1.2rem;
            color: #94a3b8;
        }
        .copyright a {
            color: #facc15;
        }
        .toc {
            background: #f1f5f9;
            padding: 1.5rem 2rem;
            border-radius: 16px;
            margin: 1.5rem 0 2.5rem;
            border-left: 5px solid #e11d48;
        }
        .toc ul {
            list-style: none;
            padding: 0;
            columns: 2 220px;
            column-gap: 2rem;
        }
        .toc li {
            padding: 0.25rem 0;
        }
        .toc a {
            font-weight: 500;
        }
        @media (max-width: 480px) {
            .toc ul {
                columns: 1;
            }
        }
        .highlight-box {
            background: #fef9c3;
            border-left: 6px solid #facc15;
            padding: 1.2rem 1.8rem;
            border-radius: 12px;
            margin: 1.5rem 0;
        }
        .tip-box {
            background: #e0f2fe;
            border-left: 6px solid #0ea5e9;
            padding: 1.2rem 1.8rem;
            border-radius: 12px;
            margin: 1.5rem 0;
        }
        .emoji-big {
            font-size: 1.4rem;
            margin-right: 0.3rem;
        }
        .badge {
            display: inline-block;
            background: #e11d48;
            color: #fff;
            padding: 0.15rem 0.8rem;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .updated {
            color: #64748b;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        hr {
            border: none;
            border-top: 2px dashed #e2e8f0;
            margin: 2.5rem 0;
        }
        .schema-hidden {
            display: none;
        }