:root {
            --primary: #e53935;
            --primary-dark: #c62828;
            --secondary: #1a237e;
            --dark: #121212;
            --light: #f5f5f5;
            --grey: #333;
            --light-grey: #757575;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
            --transition: all 0.3s ease;
        }
        * {
            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: var(--light);
            background-color: var(--dark);
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: rgba(18, 18, 18, 0.95);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid var(--primary);
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: -1px;
            display: flex;
            align-items: center;
        }
        .my-logo span {
            color: var(--light);
            margin-left: 5px;
        }
        .my-logo:hover {
            transform: scale(1.03);
        }
        nav ul {
            display: flex;
            gap: 25px;
        }
        nav a {
            font-weight: 600;
            padding: 8px 12px;
            border-radius: 4px;
        }
        nav a:hover, nav a.active {
            background-color: var(--primary);
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--light);
        }
        .breadcrumb {
            background-color: var(--grey);
            padding: 12px 0;
            font-size: 0.9rem;
        }
        .breadcrumb ul {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 10px;
            color: var(--light-grey);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        main {
            padding: 40px 0;
        }
        article {
            background-color: rgba(33, 33, 33, 0.9);
            border-radius: 12px;
            padding: 40px;
            box-shadow: var(--shadow);
            margin-bottom: 40px;
        }
        h1, h2, h3, h4 {
            color: var(--light);
            line-height: 1.3;
            margin-bottom: 20px;
            font-weight: 700;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            border-left: 5px solid var(--primary);
            padding-left: 20px;
            margin-bottom: 30px;
        }
        h2 {
            font-size: 2rem;
            margin-top: 40px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--secondary);
        }
        h3 {
            font-size: 1.6rem;
            color: #bbbbbb;
            margin-top: 30px;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--light-grey);
            margin-top: 25px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        strong {
            color: var(--primary);
            font-weight: 700;
        }
        em {
            color: #ffcc80;
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(135deg, #1a237e 0%, #283593 100%);
            border-left: 5px solid var(--primary);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 8px 8px 0;
        }
        .img-container {
            margin: 30px auto;
            text-align: center;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            max-width: 800px;
        }
        .img-container img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .img-container img:hover {
            transform: scale(1.02);
        }
        .caption {
            font-style: italic;
            color: var(--light-grey);
            padding: 10px;
            font-size: 0.9rem;
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin: 30px 0;
        }
        .link-item {
            background-color: var(--grey);
            padding: 15px;
            border-radius: 8px;
            border: 1px solid #444;
            transition: var(--transition);
        }
        .link-item:hover {
            background-color: #3d3d3d;
            border-color: var(--primary);
            transform: translateY(-3px);
        }
        .link-item i {
            color: var(--primary);
            margin-right: 10px;
        }
        .interactive-section {
            background-color: var(--grey);
            padding: 30px;
            border-radius: 10px;
            margin: 40px 0;
            border: 1px solid #444;
        }
        .form-title {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
        }
        .form-title i {
            color: var(--primary);
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        input, textarea, select {
            padding: 15px;
            background-color: #2c2c2c;
            border: 1px solid #555;
            border-radius: 6px;
            color: var(--light);
            font-size: 1rem;
            width: 100%;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary);
        }
        button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 6px;
            font-weight: bold;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        button:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .rating {
            display: flex;
            gap: 10px;
            align-items: center;
            flex-wrap: wrap;
        }
        .star {
            font-size: 1.8rem;
            color: #555;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        footer {
            background-color: #0a0a0a;
            padding: 50px 0 20px;
            border-top: 2px solid var(--primary);
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: var(--primary);
            margin-bottom: 25px;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            margin-bottom: 10px;
            padding: 8px 0;
            border-bottom: 1px dashed #333;
        }
        friend-link a:hover {
            color: var(--primary);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #333;
            color: var(--light-grey);
            font-size: 0.9rem;
        }
        .update-time {
            background-color: var(--secondary);
            color: #bbdefb;
            padding: 10px 20px;
            border-radius: 6px;
            display: inline-block;
            margin-bottom: 30px;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            article { padding: 30px; }
        }
        @media (max-width: 768px) {
            .header-container { padding: 12px 0; }
            nav {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 80%;
                height: calc(100vh - 70px);
                background-color: var(--dark);
                flex-direction: column;
                padding: 30px;
                transition: left 0.5s ease;
                box-shadow: 5px 0 15px rgba(0,0,0,0.5);
            }
            nav.active { left: 0; }
            nav ul { flex-direction: column; gap: 0; }
            nav a { display: block; padding: 15px; border-bottom: 1px solid #333; }
            .hamburger { display: block; }
            .link-list { grid-template-columns: 1fr; }
            .footer-content { grid-template-columns: 1fr; }
        }
        @media (max-width: 576px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            article { padding: 20px; }
            .interactive-section { padding: 20px; }
        }