* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            color: #e6e6e6;
            overflow-x: hidden;
        }
        a {
            color: #4dabf7;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ff9f1c;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
        }
        .site-header {
            background: rgba(0, 0, 0, 0.9);
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: #ff9f1c;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
            letter-spacing: 1px;
            background: linear-gradient(90deg, #ff9f1c, #ff6b6b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-links a {
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 5px;
        }
        .nav-links a:hover {
            background: rgba(255, 159, 28, 0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #ff9f1c;
        }
        .breadcrumb {
            background: rgba(255, 255, 255, 0.1);
            padding: 0.8rem 2rem;
            font-size: 0.95rem;
            border-bottom: 1px solid #444;
        }
        .breadcrumb a {
            color: #aaa;
        }
        .breadcrumb a:hover {
            color: #ff9f1c;
        }
        .container {
            max-width: 1400px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 1024px) {
            .container {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: rgba(30, 30, 46, 0.95);
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }
        h1 {
            font-size: 3.2rem;
            color: #ff9f1c;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-align: center;
            border-bottom: 3px solid #4dabf7;
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2.4rem;
            color: #4dabf7;
            margin: 2.5rem 0 1.2rem;
            padding-left: 0.5rem;
            border-left: 5px solid #ff9f1c;
        }
        h3 {
            font-size: 1.8rem;
            color: #ffd166;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #9dffb0;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            line-height: 1.8;
            text-align: justify;
        }
        .highlight {
            background: rgba(255, 159, 28, 0.15);
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 4px solid #ff9f1c;
            margin: 1.5rem 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        .sidebar {
            background: rgba(30, 30, 46, 0.95);
            padding: 2rem;
            border-radius: 15px;
            height: fit-content;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
        }
        .sidebar h3 {
            color: #ff9f1c;
            margin-bottom: 1.5rem;
            text-align: center;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: bold;
            color: #ffd166;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #555;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #ff9f1c;
        }
        button {
            background: linear-gradient(90deg, #ff9f1c, #ff6b6b);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: bold;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        button:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(255, 159, 28, 0.4);
        }
        .site-footer {
            background: rgba(0, 0, 0, 0.95);
            padding: 3rem 2rem 1.5rem;
            margin-top: 3rem;
            border-top: 3px solid #ff9f1c;
        }
        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h3 {
            color: #4dabf7;
            margin-bottom: 1.5rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
            font-size: 1rem;
            color: #aaa;
        }
        friend-link a {
            color: #aaa;
        }
        friend-link a:hover {
            color: #ff9f1c;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            color: #888;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background: rgba(0, 0, 0, 0.98);
                flex-direction: column;
                align-items: center;
                padding: 2rem 0;
                transition: left 0.5s ease;
                z-index: 999;
            }
            .nav-links.active {
                left: 0;
            }
            h1 {
                font-size: 2.5rem;
            }
            h2 {
                font-size: 2rem;
            }
            h3 {
                font-size: 1.6rem;
            }
            .container {
                padding: 0 1rem;
            }
            article, .sidebar {
                padding: 1.5rem;
            }
        }
        .text-center {
            text-align: center;
        }
        .mb-3 {
            margin-bottom: 3rem;
        }
        .last-updated {
            font-style: italic;
            color: #aaa;
            margin-bottom: 2rem;
            text-align: right;
        }