*,
        *::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: #f8f6f2;
            color: #1e1e1e;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #b45309;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: #7a2e0e;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 0.75rem;
            color: #1e293b;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-top: 2.5rem;
            margin-bottom: 0.6rem;
            color: #1e293b;
            border-bottom: 3px solid #f59e0b;
            padding-bottom: 0.3rem;
            display: inline-block;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            margin-top: 1.8rem;
            margin-bottom: 0.4rem;
            color: #334155;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-top: 1.2rem;
            margin-bottom: 0.3rem;
            color: #475569;
        }
        p {
            margin-bottom: 1rem;
        }
        .text-muted {
            color: #64748b;
            font-size: 0.9rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #f8fafc;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem 1rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 900;
            letter-spacing: -0.03em;
            background: linear-gradient(to right, #f59e0b, #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .my-logo i {
            background: none;
            -webkit-text-fill-color: #f59e0b;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #f59e0b;
            color: #f59e0b;
            font-size: 1.5rem;
            padding: 0.3rem 0.7rem;
            border-radius: 6px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            background: #f59e0b;
            color: #0f172a;
        }
        .navbar {
            display: flex;
            flex-wrap: wrap;
            gap: 0.2rem 1.2rem;
            align-items: center;
        }
        .navbar a {
            color: #e2e8f0;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .navbar a:hover {
            color: #f59e0b;
            border-bottom-color: #f59e0b;
            text-decoration: none;
        }
        .breadcrumb {
            background: #e9e5dd;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            color: #475569;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #94a3b8;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #b45309;
        }
        .breadcrumb .current {
            color: #1e293b;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(to bottom, #1e293b, #0f172a);
            color: #f8fafc;
            padding: 3rem 0 2.5rem;
            text-align: center;
        }
        .hero h1 {
            color: #f59e0b;
            font-size: 2.8rem;
        }
        .hero p {
            font-size: 1.15rem;
            max-width: 720px;
            margin: 0.8rem auto 0;
            color: #cbd5e1;
        }
        .hero .last-updated {
            display: inline-block;
            margin-top: 1rem;
            background: rgba(245, 158, 11, 0.18);
            padding: 0.3rem 1.2rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #fcd34d;
        }
        .content-wrap {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        .main-article {
            background: #fff;
            padding: 2rem 2.2rem;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
        }
        .sidebar {
            background: #fff;
            padding: 1.8rem 1.5rem;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            align-self: start;
            position: sticky;
            top: 80px;
        }
        .sidebar h3 {
            font-size: 1.1rem;
            border-bottom: 2px solid #f59e0b;
            padding-bottom: 0.3rem;
            margin-top: 0;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
            margin: 1rem 0 0;
        }
        .sidebar li {
            margin-bottom: 0.6rem;
        }
        .sidebar a {
            display: block;
            padding: 0.4rem 0.6rem;
            border-radius: 6px;
            background: #f8f6f2;
            font-size: 0.92rem;
            transition: 0.2s;
        }
        .sidebar a:hover {
            background: #f59e0b;
            color: #0f172a;
            text-decoration: none;
        }
        .featured-img {
            margin: 1.8rem 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
        }
        .featured-img img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: #cbd5e1;
        }
        .featured-img figcaption {
            background: #f1f5f9;
            padding: 0.5rem 1rem;
            font-size: 0.85rem;
            color: #475569;
        }
        .form-section {
            background: #f8fafc;
            border: 1px solid #e2e8f0;
            border-radius: 14px;
            padding: 1.5rem 1.8rem;
            margin: 2rem 0 1.2rem;
        }
        .form-section h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 0.25rem;
            color: #1e293b;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.65rem 0.9rem;
            border: 1px solid #cbd5e1;
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            background: #fff;
            transition: 0.2s;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: #f59e0b;
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 90px;
        }
        .btn {
            background: #f59e0b;
            color: #0f172a;
            font-weight: 700;
            padding: 0.7rem 2rem;
            border: none;
            border-radius: 30px;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            background: #d97706;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(245, 158, 11, 0.3);
        }
        .btn-secondary {
            background: #1e293b;
            color: #f8fafc;
        }
        .btn-secondary:hover {
            background: #0f172a;
            box-shadow: 0 6px 18px rgba(30, 41, 59, 0.3);
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #d1d5db;
            cursor: pointer;
            direction: rtl;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            transition: color 0.2s;
            cursor: pointer;
            color: #d1d5db;
        }
        .rating-stars label:hover,
        .rating-stars label:hover~label,
        .rating-stars input:checked~label {
            color: #f59e0b;
        }
        .comment-list {
            margin: 1.2rem 0;
        }
        .comment-item {
            background: #f1f5f9;
            padding: 0.9rem 1.2rem;
            border-radius: 10px;
            margin-bottom: 0.8rem;
        }
        .comment-item .meta {
            font-size: 0.8rem;
            color: #64748b;
            display: flex;
            gap: 0.8rem;
        }
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 2rem 0 1.2rem;
            margin-top: auto;
            font-size: 0.9rem;
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.5rem 2rem;
        }
        .footer-inner .col {
            flex: 1 1 220px;
        }
        .footer-inner h4 {
            color: #f59e0b;
            margin-top: 0;
            font-size: 1rem;
        }
        friend-link {
            display: block;
            margin-top: 0.6rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            margin-bottom: 0.3rem;
            color: #94a3b8;
        }
        friend-link a:hover {
            color: #f59e0b;
        }
        .copyright {
            border-top: 1px solid #1e293b;
            padding-top: 1rem;
            margin-top: 1.5rem;
            text-align: center;
            font-size: 0.8rem;
            color: #64748b;
        }
        @media (max-width: 900px) {
            .content-wrap {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .main-article {
                order: 1;
                padding: 1.5rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            .hero h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 700px) {
            .nav-toggle {
                display: block;
            }
            .navbar {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 0.8rem 0 0.4rem;
                gap: 0.3rem;
            }
            .navbar.open {
                display: flex;
            }
            .navbar a {
                padding: 0.5rem 0.8rem;
                border-radius: 6px;
                border-bottom: none;
                background: rgba(255, 255, 255, 0.05);
            }
            .navbar a:hover {
                background: rgba(245, 158, 11, 0.15);
                border-bottom: none;
            }
            .header-inner {
                align-items: center;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .main-article {
                padding: 1rem;
            }
            .form-section {
                padding: 1rem;
            }
            .footer-inner {
                flex-direction: column;
                gap: 1rem;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.75rem;
            }
            .hero {
                padding: 2rem 0 1.5rem;
            }
            .rating-stars {
                font-size: 1.3rem;
            }
        }
        .highlight {
            background: #fef3c7;
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .stat-badge {
            display: inline-block;
            background: #1e293b;
            color: #f59e0b;
            padding: 0.2rem 0.8rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.02em;
        }
        .blockquote {
            border-left: 4px solid #f59e0b;
            background: #fefce8;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #334155;
        }
        .blockquote cite {
            display: block;
            margin-top: 0.5rem;
            font-style: normal;
            font-size: 0.85rem;
            color: #64748b;
        }
        .two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            margin: 1.2rem 0;
        }
        @media (max-width: 600px) {
            .two-col {
                grid-template-columns: 1fr;
            }
        }
        .skip-link {
            position: absolute;
            top: -100%;
            left: 0;
            background: #f59e0b;
            color: #0f172a;
            padding: 0.5rem 1rem;
            font-weight: 700;
            z-index: 999;
        }
        .skip-link:focus {
            top: 0;
        }
        .schema-hidden {
            display: none;
        }