* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }
        body {
            background: #f8fafc;
            color: #0f172a;
            line-height: 1.7;
            scroll-behavior: smooth;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: all 0.2s;
        }
        a:hover {
            color: #1e40af;
            text-decoration: underline;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            background: linear-gradient(145deg, #0b1120 0%, #1e293b 100%);
            padding: 1rem 0;
            box-shadow: 0 10px 25px -5px rgba(2, 6, 23, 0.4);
            position: sticky;
            top: 0;
            z-index: 60;
        }
        .header-flex {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.04em;
            background: linear-gradient(135deg, #fbbf24, #f59e0b, #fcd34d);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            transition: 0.2s;
            text-decoration: none;
        }
        .my-logo:hover {
            text-decoration: none;
            filter: brightness(1.15);
        }
        .my-logo span {
            font-weight: 300;
            color: #e2e8f0;
            -webkit-text-fill-color: #e2e8f0;
            background: none;
            font-size: 0.8rem;
            letter-spacing: 0.1px;
            display: block;
            margin-top: -4px;
        }
        .nav-links {
            display: flex;
            gap: 1rem;
            align-items: center;
            list-style: none;
        }
        .nav-links a {
            color: #e2e8f0;
            font-weight: 500;
            padding: 0.4rem 0.8rem;
            border-radius: 30px;
            transition: 0.2s;
        }
        .nav-links a i {
            margin-right: 5px;
        }
        .nav-links a:hover {
            background: rgba(255,255,255,0.1);
            text-decoration: none;
            color: white;
        }
        .hamburger {
            display: none;
            background: transparent;
            border: none;
            color: white;
            font-size: 1.9rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 0.75rem 0;
            font-size: 0.9rem;
            background: #f1f5f9;
            border-bottom: 1px solid #e2e8f0;
        }
        .breadcrumb .container {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb i {
            font-size: 0.8rem;
            align-self: center;
            color: #64748b;
        }
        .hero {
            background: radial-gradient(circle at 10% 30%, #1e293b, #0f172a);
            padding: 3rem 0;
            color: white;
            margin-bottom: 2.5rem;
        }
        .hero .container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 2rem;
        }
        .hero-text {
            flex: 2 1 400px;
        }
        .hero-img {
            flex: 1 1 300px;
            background: #334155;
            border-radius: 30px;
            padding: 0.5rem;
        }
        .hero-img img {
            width: 100%;
            border-radius: 24px;
            display: block;
        }
        .search-box {
            display: flex;
            gap: 8px;
            margin: 2rem 0 0.8rem;
            max-width: 550px;
        }
        .search-box input {
            flex: 1;
            padding: 12px 18px;
            border-radius: 40px;
            border: none;
            outline: none;
            font-size: 1rem;
        }
        .search-box button {
            background: #f59e0b;
            border: none;
            color: #0f172a;
            font-weight: bold;
            padding: 0 1.5rem;
            border-radius: 40px;
            cursor: pointer;
        }
        .content-layout {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }
        .sidebar {
            position: relative;
        }
        .sidebar-inner {
            position: sticky;
            top: 100px;
            background: white;
            padding: 1.5rem;
            border-radius: 24px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
        }
        .sidebar-inner h3 {
            font-size: 1.1rem;
            margin-bottom: 1rem;
            border-left: 4px solid #f59e0b;
            padding-left: 0.6rem;
        }
        .sidebar-inner ul {
            list-style: none;
        }
        .sidebar-inner li {
            margin: 0.7rem 0;
        }
        .sidebar-inner a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #1e293b;
            font-weight: 500;
            font-size: 0.9rem;
        }
        .article {
            background: white;
            padding: 2.2rem;
            border-radius: 28px;
            box-shadow: 0 15px 35px rgba(0,0,0,0.04);
        }
        h1 {
            font-size: 2.7rem;
            line-height: 1.2;
            font-weight: 800;
            margin: 0.5rem 0 1.2rem;
        }
        h2 {
            font-size: 2rem;
            margin-top: 2.8rem;
            border-bottom: 3px solid #f59e0b;
            padding-bottom: 0.5rem;
            font-weight: 700;
        }
        h3 {
            font-size: 1.5rem;
            margin-top: 1.8rem;
            font-weight: 600;
        }
        h4 {
            font-size: 1.2rem;
            margin-top: 1.3rem;
            font-weight: 600;
            color: #b45309;
        }
        p {
            margin: 1rem 0;
            color: #1f2937;
        }
        .highlight {
            background: #fef9c3;
            padding: 0.2rem 0.3rem;
            border-radius: 6px;
        }
        .dropcap {
            font-size: 3rem;
            float: left;
            line-height: 1;
            padding-right: 8px;
            font-weight: 800;
            color: #f59e0b;
        }
        .stat-card {
            background: #f8fafc;
            border-radius: 20px;
            padding: 1.4rem;
            margin: 1.5rem 0;
            border-left: 8px solid #f59e0b;
        }
        .friend-link {
            display: block;
            background: #f1f5f9;
            padding: 0.8rem 1rem;
            border-radius: 30px;
            margin: 1rem 0;
            font-weight: 600;
        }
        .feedback-section {
            background: #fefce8;
            border-radius: 28px;
            padding: 2rem;
            margin-top: 3rem;
        }
        .feedback-form input, .feedback-form textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: 18px;
            border: 1px solid #d1d5db;
            margin-bottom: 1rem;
            background: white;
        }
        .star-rating i {
            color: #d1d5db;
            cursor: pointer;
            font-size: 1.6rem;
            transition: 0.1s;
        }
        .star-rating i.active {
            color: #f59e0b;
        }
        .btn-submit {
            background: #2563eb;
            color: white;
            border: none;
            padding: 0.8rem 2.2rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
        }
        .btn-submit:hover {
            background: #1e40af;
        }
        .site-footer {
            background: #0a0f1c;
            color: #b0b6c3;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit,minmax(220px,1fr));
            gap: 2rem;
        }
        .footer-grid a {
            color: #94a3b8;
            display: inline-block;
            margin: 0.3rem 0;
        }
        @media (max-width: 960px) {
            .content-layout {
                grid-template-columns: 1fr;
            }
            .sidebar {
                display: none;
            }
        }
        @media (max-width: 700px) {
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0f172a;
                margin-top: 1rem;
                padding: 1rem 0;
                border-radius: 20px;
            }
            .nav-links.show {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .hero-text h1 {
                font-size: 2rem;
            }
            .article {
                padding: 1.2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .toc {
            background: #eef2ff;
            padding: 1.2rem;
            border-radius: 20px;
        }