* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #FF4655; 
            --secondary: #0F1923; 
            --accent: #FFC107; 
            --light: #F5F5F5;
            --dark: #1A1A1A;
            --gray: #757575;
            --transition: all 0.3s ease;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        section {
            padding: 60px 0;
        }
        .site-header {
            background: linear-gradient(135deg, var(--secondary) 0%, #1a2b3c 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(to right, var(--primary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }
        .my-logo:hover {
            transform: scale(1.03);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--primary);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin: 0 10px;
            color: var(--gray);
        }
        .hero {
            background: linear-gradient(rgba(15, 25, 35, 0.85), rgba(15, 25, 35, 0.9)), url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            color: white;
            text-align: center;
            padding: 100px 20px;
            border-radius: 0 0 20px 20px;
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            align-items: start;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        }
        h1 { font-size: 2.8rem; margin-bottom: 1.5rem; color: var(--secondary); }
        h2 { font-size: 2.2rem; margin: 2.5rem 0 1rem; color: var(--primary); border-bottom: 3px solid var(--accent); padding-bottom: 0.5rem; }
        h3 { font-size: 1.8rem; margin: 2rem 0 1rem; color: var(--secondary); }
        h4 { font-size: 1.4rem; margin: 1.5rem 0 0.8rem; color: #555; }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        .highlight {
            background: linear-gradient(120deg, rgba(255,70,85,0.1) 0%, rgba(255,193,7,0.1) 100%);
            border-left: 5px solid var(--primary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .feature-img {
            border-radius: 12px;
            margin: 2.5rem auto;
            box-shadow: 0 15px 35px rgba(0,0,0,0.1);
            overflow: hidden;
            transition: transform 0.5s ease;
        }
        .feature-img:hover {
            transform: translateY(-10px);
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.05);
            margin-bottom: 30px;
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-widget ul {
            list-style: none;
        }
        .sidebar-widget li {
            padding: 12px 0;
            border-bottom: 1px dashed #eee;
        }
        .sidebar-widget li:last-child {
            border-bottom: none;
        }
        .interactive-module {
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
            border-radius: 15px;
            padding: 30px;
            margin: 3rem 0;
            border: 1px solid #dee2e6;
        }
        .module-title {
            display: flex;
            align-items: center;
            gap: 15px;
            color: var(--secondary);
            margin-bottom: 1.5rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #444;
        }
        .form-control {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #ced4da;
            border-radius: 10px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 70, 85, 0.2);
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, var(--primary), #ff6b6b);
            color: white;
            padding: 15px 30px;
            border: none;
            border-radius: 10px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background: linear-gradient(to right, #e63e4d, #ff5252);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(255, 70, 85, 0.3);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            margin: 1rem 0;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating-stars input:checked ~ label,
        .rating-stars label:hover,
        .rating-stars label:hover ~ label {
            color: var(--accent);
        }
        .site-footer {
            background: var(--secondary);
            color: #ccc;
            padding: 60px 0 30px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-widget h4 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.05);
            padding: 10px 20px;
            border-radius: 8px;
            margin: 5px;
            border: 1px solid rgba(255,255,255,0.1);
            transition: var(--transition);
        }
        friend-link:hover {
            background: rgba(255,70,85,0.2);
            border-color: var(--primary);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #999;
        }
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.5rem; }
            h2 { font-size: 1.8rem; }
            .header-container { flex-wrap: wrap; }
            .hamburger { display: block; }
            .main-nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            .main-nav.active {
                max-height: 400px;
                margin-top: 1rem;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                width: 100%;
                text-align: center;
                border-top: 1px solid rgba(255,255,255,0.1);
            }
            .main-nav a {
                display: block;
                padding: 1rem;
            }
            article, .sidebar-widget {
                padding: 25px;
            }
        }