* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #333;
            background-color: #f8f9fa;
            max-width: 100%;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 { color: #2c3e50; font-weight: 700; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); margin-top: 1.5rem; }
        h2 { font-size: clamp(1.6rem, 4vw, 2.2rem); margin-top: 2.5rem; padding-bottom: 0.5rem; border-bottom: 3px solid #f1c40f; }
        h3 { font-size: clamp(1.3rem, 3vw, 1.7rem); margin-top: 2rem; color: #3498db; }
        h4 { font-size: 1.2rem; margin-top: 1.5rem; color: #16a085; }
        p { margin-bottom: 1.2rem; font-size: 1.05rem; }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a2980, #26d0ce);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 900;
            color: #f1c40f;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i { font-size: 2rem; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0.8rem;
            border-radius: 5px;
            transition: all 0.3s ease;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: rgba(241, 196, 15, 0.9);
            color: #2c3e50;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #ecf0f1;
            font-size: 0.95rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: ">";
            margin: 0 10px;
            color: #7f8c8d;
        }
        .breadcrumb a {
            color: #3498db;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        article { background: white; padding: 2.5rem; border-radius: 15px; box-shadow: 0 5px 20px rgba(0,0,0,0.05); }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 140px;
        }
        .module {
            background: #f8f9fa;
            border-left: 5px solid #3498db;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .module h3 { margin-top: 0; }
        form { display: flex; flex-direction: column; gap: 1rem; }
        input, textarea, select {
            padding: 0.8rem;
            border: 1px solid #bdc3c7;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #3498db;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        button, .btn {
            background: linear-gradient(to right, #e74c3c, #c0392b);
            color: white;
            border: none;
            padding: 0.9rem 1.5rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
            text-decoration: none;
            display: inline-block;
        }
        button:hover, .btn:hover {
            background: linear-gradient(to right, #c0392b, #a93226);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(231, 76, 60, 0.3);
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            font-size: 1.8rem;
            color: #f1c40f;
            margin: 1rem 0;
        }
        .star { cursor: pointer; transition: transform 0.2s; }
        .star:hover { transform: scale(1.2); }
        .highlight { background-color: #fffde7; padding: 1.5rem; border-radius: 10px; border: 2px dashed #f1c40f; margin: 2rem 0; }
        .highlight p:last-child { margin-bottom: 0; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        img.responsive {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 2rem auto;
            display: block;
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
            border: 5px solid white;
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .link-list a {
            background: #ecf0f1;
            padding: 1rem;
            border-radius: 8px;
            text-decoration: none;
            color: #2c3e50;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: all 0.3s;
        }
        .link-list a:hover {
            background: #3498db;
            color: white;
            transform: translateX(5px);
        }
        footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1rem;
            margin: 0.5rem 0;
            border-radius: 5px;
            transition: background 0.3s;
        }
        friend-link a {
            color: #3498db;
            text-decoration: none;
            font-weight: 600;
        }
        friend-link:hover { background: rgba(255,255,255,0.1); }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #4a6572;
            font-size: 0.9rem;
            color: #bdc3c7;
        }
        @media (max-width: 992px) {
            main { grid-template-columns: 1fr; }
            aside { position: static; }
        }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            .hamburger { display: block; }
            .main-nav {
                width: 100%;
                display: none;
                margin-top: 1rem;
            }
            .main-nav.active { display: block; }
            .main-nav ul {
                flex-direction: column;
                gap: 0.5rem;
            }
            .main-nav a { display: block; padding: 0.8rem; }
            .link-list { grid-template-columns: 1fr; }
        }