* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            background: #f6f8fc;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #b45309;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #78350f;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.6rem;
        }
        li {
            margin-bottom: 0.3rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: #0f172a;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
        }
        h1 {
            font-size: 2.4rem;
            border-left: 6px solid #b45309;
            padding-left: 1rem;
            margin-top: 1rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 3px solid #e2e8f0;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.35rem;
            color: #1e293b;
        }
        h4 {
            font-size: 1.1rem;
            color: #334155;
        }
        p {
            margin-bottom: 1rem;
            color: #1e293b;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
            border-radius: 20px;
            padding: 1.2rem 1.8rem 2.5rem;
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0 0.6rem;
            border-bottom: 2px solid #e9edf2;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(145deg, #b45309, #7c2d12);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none !important;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none !important;
        }
        .my-logo small {
            font-size: 0.8rem;
            -webkit-text-fill-color: #64748b;
            color: #64748b;
            font-weight: 400;
            letter-spacing: 0.3px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            font-weight: 500;
            color: #1e293b;
            padding: 0.3rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            background: #fef3c7;
            color: #92400e;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1e293b;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #f1f5f9;
        }
        .nav-toggle {
            display: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.4rem 0.8rem;
            padding: 0.8rem 0 0.2rem;
            font-size: 0.9rem;
            color: #64748b;
            list-style: none;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #94a3b8;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #b45309;
        }
        .last-updated {
            display: inline-block;
            background: #fef9c3;
            padding: 0.2rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #713f12;
            font-weight: 500;
            margin: 0.6rem 0 1.2rem;
        }
        .hero-img-wrap {
            margin: 1.4rem 0 2rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.06);
            background: #f1f5f9;
        }
        .hero-img-wrap img {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem 1.8rem;
        }
        @media (min-width: 860px) {
            .content-grid {
                grid-template-columns: 1fr 300px;
            }
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            background: #faf9f6;
            border-radius: 16px;
            padding: 1.4rem 1.2rem;
            border: 1px solid #e9e4dc;
            align-self: start;
            position: sticky;
            top: 1.2rem;
        }
        .sidebar h3 {
            margin-top: 0.4rem;
            font-size: 1.3rem;
        }
        .sidebar ul {
            list-style: none;
            padding-left: 0;
        }
        .sidebar li {
            padding: 0.4rem 0;
            border-bottom: 1px dashed #e2e8f0;
        }
        .sidebar li a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .styled-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.4rem 0;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
        }
        .styled-table thead {
            background: #b45309;
            color: #fff;
        }
        .styled-table th,
        .styled-table td {
            padding: 0.7rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e9edf2;
        }
        .styled-table tbody tr:hover {
            background: #fff7ed;
        }
        .styled-table tbody tr:nth-child(even) {
            background: #faf9f6;
        }
        .form-card {
            background: #f8fafc;
            border-radius: 16px;
            padding: 1.6rem 1.8rem;
            margin: 1.8rem 0;
            border: 1px solid #e2e8f0;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.02);
        }
        .form-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .form-group {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            flex: 1 1 200px;
            padding: 0.7rem 1rem;
            border: 1px solid #d1d5db;
            border-radius: 10px;
            font-size: 0.95rem;
            background: #fff;
            transition: border 0.2s, box-shadow 0.2s;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #b45309;
            box-shadow: 0 0 0 3px rgba(180, 83, 9, 0.15);
        }
        .form-group textarea {
            min-height: 80px;
            flex-basis: 100%;
        }
        .btn {
            background: #b45309;
            color: #fff;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            background: #92400e;
            transform: translateY(-1px);
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-outline {
            background: transparent;
            border: 2px solid #b45309;
            color: #b45309;
        }
        .btn-outline:hover {
            background: #b45309;
            color: #fff;
        }
        .star-group {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #fbbf24;
            cursor: pointer;
        }
        .star-group i {
            transition: transform 0.15s, color 0.15s;
        }
        .star-group i:hover {
            transform: scale(1.2);
            color: #f59e0b;
        }
        friend-link {
            display: block;
            background: #f1f5f9;
            border-radius: 16px;
            padding: 1.4rem 1.6rem;
            margin: 2.2rem 0 0.8rem;
            border: 1px solid #e2e8f0;
        }
        friend-link a {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            margin: 0.2rem 0.4rem;
            background: #fff;
            border-radius: 30px;
            border: 1px solid #ddd;
            font-size: 0.9rem;
            transition: background 0.2s, border-color 0.2s;
        }
        friend-link a:hover {
            background: #fef3c7;
            border-color: #b45309;
            text-decoration: none;
        }
        .site-footer {
            margin-top: 2.8rem;
            padding-top: 1.4rem;
            border-top: 2px solid #e9edf2;
            text-align: center;
            font-size: 0.9rem;
            color: #64748b;
        }
        .site-footer strong {
            color: #1e293b;
        }
        .schema-hidden {
            display: none;
        }
        @media (max-width: 700px) {
            body {
                padding: 0 0.5rem;
            }
            .container {
                padding: 0.8rem 1rem 1.8rem;
                border-radius: 12px;
            }
            h1 {
                font-size: 1.7rem;
                padding-left: 0.7rem;
            }
            h2 {
                font-size: 1.35rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0.4rem;
                padding: 1rem 0 0.4rem;
                border-top: 1px solid #e9edf2;
                margin-top: 0.6rem;
            }
            .main-nav a {
                padding: 0.5rem 0.8rem;
                background: #f8fafc;
                border-radius: 8px;
            }
            .hamburger {
                display: block;
            }
            .nav-toggle:checked~.main-nav {
                display: flex;
            }
            .site-header {
                position: relative;
            }
            .sidebar {
                position: static;
                margin-top: 1.2rem;
            }
            .styled-table {
                font-size: 0.82rem;
            }
            .styled-table th,
            .styled-table td {
                padding: 0.5rem 0.6rem;
            }
            .form-card {
                padding: 1.2rem;
            }
            .star-group {
                font-size: 1.4rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
        }
        @media (min-width: 701px) and (max-width: 1024px) {
            .container {
                padding: 1rem 1.4rem 2rem;
            }
            .content-grid {
                gap: 1.6rem;
            }
        }
        .emoji-big {
            font-size: 1.3em;
        }
        .highlight-box {
            background: linear-gradient(145deg, #fffbeb, #fef3c7);
            border-left: 5px solid #b45309;
            padding: 1rem 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 1.4rem 0;
        }
        .badge {
            background: #b45309;
            color: #fff;
            padding: 0.1rem 0.8rem;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.3px;
            display: inline-block;
        }
        .flex-icon-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem 1.6rem;
            list-style: none;
            padding-left: 0;
        }
        .flex-icon-list li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 1rem;
            margin: 1.2rem 0;
        }
        .stats-card {
            background: #f8fafc;
            border-radius: 12px;
            padding: 0.8rem 1rem;
            text-align: center;
            border: 1px solid #e2e8f0;
        }
        .stats-card .number {
            font-size: 1.8rem;
            font-weight: 800;
            color: #b45309;
        }
        .stats-card .label {
            font-size: 0.8rem;
            color: #64748b;
            text-transform: uppercase;
            letter-spacing: 0.4px;
        }
        .toc-list {
            list-style: none;
            padding-left: 0;
        }
        .toc-list li {
            padding: 0.25rem 0;
        }
        .toc-list a {
            color: #1e293b;
            font-weight: 500;
        }
        .toc-list a:hover {
            color: #b45309;
        }
        .toc-list .sub {
            padding-left: 1.2rem;
            font-size: 0.92rem;
            font-weight: 400;
        }