* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #e0e0e0;
            background: #0d1117;
            background-image: radial-gradient(circle at 15% 50%, rgba(120, 119, 116, 0.05) 0%, transparent 55%), radial-gradient(circle at 85% 30%, rgba(255, 140, 0, 0.05) 0%, transparent 55%);
            max-width: 1600px;
            margin: 0 auto;
            padding: 0 20px;
        }
        h1, h2, h3, h4 { color: #f0a500; font-weight: 700; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); margin-top: 1.5rem; border-bottom: 3px solid #f0a500; padding-bottom: 0.5rem; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); margin-top: 2.5rem; padding-left: 10px; border-left: 5px solid #ff7b00; }
        h3 { font-size: 1.6rem; color: #ffb142; margin-top: 2rem; }
        p { margin-bottom: 1.5rem; text-align: justify; hyphens: auto; }
        a { color: #4dabf7; text-decoration: none; transition: color 0.3s, text-shadow 0.3s; }
        a:hover { color: #ffa502; text-shadow: 0 0 8px rgba(255, 165, 2, 0.5); }
        strong { color: #ffcc00; font-weight: 700; }
        em { color: #aaa; font-style: italic; }
        blockquote {
            border-left: 4px solid #f0a500;
            padding: 1rem 1.5rem;
            margin: 2rem 0;
            background: rgba(240, 165, 0, 0.05);
            font-style: italic;
            border-radius: 0 8px 8px 0;
        }
        ul, ol { margin: 1.5rem 0; padding-left: 2rem; }
        li { margin-bottom: 0.75rem; }
        .container {
            display: grid;
            grid-template-columns: minmax(300px, 1fr);
            gap: 2rem;
            padding-top: 1rem;
        }
        @media (min-width: 992px) {
            .container {
                grid-template-columns: 250px 1fr 250px;
            }
            .sidebar-left, .sidebar-right { position: sticky; top: 120px; height: fit-content; }
        }
        .site-header {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            padding: 1rem 0;
            border-bottom: 2px solid #f0a500;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #f0a500, #ff7b00);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }
        .logo span { color: #fff; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #ccc;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .main-nav a:hover, .main-nav a.active {
            background: rgba(240, 165, 0, 0.15);
            color: #f0a500;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #f0a500;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 1rem;
            }
            .main-nav.active { display: block; }
            .main-nav ul { flex-direction: column; gap: 0.5rem; }
        }
        .breadcrumb {
            padding: 1rem;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 8px;
            margin: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #aaa; }
        .breadcrumb a:hover { color: #f0a500; }
        .breadcrumb i { margin: 0 0.5rem; color: #666; }
        .main-content {
            background: rgba(25, 30, 40, 0.85);
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            border: 1px solid #333;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px dashed #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        .featured-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 2rem 0;
            border: 3px solid #444;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.7);
        }
        .content-section {
            margin-bottom: 3rem;
        }
        .key-point {
            background: linear-gradient(90deg, rgba(240, 165, 0, 0.1), transparent);
            padding: 1.2rem;
            border-radius: 8px;
            margin: 1.5rem 0;
            border-left: 5px solid #f0a500;
        }
        .sidebar-box {
            background: rgba(30, 35, 45, 0.9);
            border-radius: 10px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            border: 1px solid #3a3a3a;
        }
        .sidebar-box h3 {
            font-size: 1.3rem;
            margin-top: 0;
            border-bottom: 2px solid #f0a500;
            padding-bottom: 0.5rem;
        }
        .quick-links ul { list-style: none; padding-left: 0; }
        .quick-links li { margin-bottom: 0.8rem; }
        .quick-links a { display: block; padding: 0.5rem; border-radius: 5px; }
        .quick-links a:hover { background: rgba(240, 165, 0, 0.1); }
        .interactive-module {
            background: rgba(20, 25, 35, 0.9);
            border-radius: 10px;
            padding: 2rem;
            margin: 3rem 0;
            border: 1px solid #444;
        }
        .module-title { text-align: center; margin-bottom: 1.5rem; }
        .form-group { margin-bottom: 1.2rem; }
        label { display: block; margin-bottom: 0.5rem; color: #ccc; font-weight: 600; }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem 1rem;
            background: #1a1f29;
            border: 1px solid #555;
            border-radius: 6px;
            color: #eee;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #f0a500;
            box-shadow: 0 0 0 3px rgba(240, 165, 0, 0.2);
        }
        button, .btn {
            background: linear-gradient(90deg, #f0a500, #e67e22);
            color: #111;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 6px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        button:hover, .btn:hover {
            background: linear-gradient(90deg, #ffb142, #f0a500);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(240, 165, 0, 0.4);
        }
        .star-rating { display: flex; gap: 0.5rem; justify-content: center; margin: 1rem 0; }
        .star-rating input { display: none; }
        .star-rating label { font-size: 2rem; color: #555; cursor: pointer; transition: color 0.3s; }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label { color: #ffcc00; }
        .internal-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 3rem 0;
        }
        .web-link {
            background: rgba(40, 45, 55, 0.8);
            padding: 1.2rem;
            border-radius: 8px;
            border-left: 4px solid #f0a500;
            transition: transform 0.3s, background 0.3s;
        }
        .web-link:hover {
            transform: translateX(5px);
            background: rgba(50, 55, 65, 0.9);
        }
        .web-link a { font-weight: 600; }
        .site-footer {
            background: #11161f;
            border-top: 2px solid #f0a500;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
            border-radius: 12px 12px 0 0;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 { color: #fff; margin-bottom: 1.2rem; font-size: 1.3rem; }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.7rem; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #333;
            color: #888;
            font-size: 0.9rem;
        }
        .text-center { text-align: center; }
        .emoji { font-size: 1.2em; margin-right: 0.3em; }
        .divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, #f0a500, transparent);
            margin: 2.5rem 0;
        }