:root {
            --primary-color: #e10600;
            --secondary-color: #1e1e1e;
            --accent-color: #007acc;
            --text-color: #f5f5f7;
            --bg-color: #121212;
            --card-bg: #1d1d1f;
            --border-color: #333;
            --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background-color: var(--bg-color);
            color: var(--text-color);
            line-height: 1.8;
            font-size: 18px;
            overflow-x: hidden;
        }
        a {
            color: var(--accent-color);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--primary-color);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--secondary-color);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 2px solid var(--primary-color);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--primary-color);
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
        }
        .my-logo a {
            color: inherit;
        }
        .my-logo a:hover {
            text-shadow: 0 0 10px var(--primary-color);
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            font-size: 1.2rem;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
        }
        .desktop-nav a:hover {
            background-color: rgba(225, 6, 0, 0.1);
        }
        .hamburger {
            display: none;
            font-size: 2rem;
            background: none;
            border: none;
            color: var(--text-color);
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background-color: var(--secondary-color);
            padding: 1rem;
            box-shadow: 0 10px 20px rgba(0,0,0,0.3);
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .mobile-nav a {
            display: block;
            padding: 0.8rem;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            background-color: var(--card-bg);
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            margin: 0 10px;
            color: #999;
        }
        main {
            padding: 2rem 0;
        }
        article {
            background-color: var(--card-bg);
            border-radius: 15px;
            padding: 3rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
        }
        h1, h2, h3, h4 {
            color: #fff;
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 3.5rem;
            text-align: center;
            color: var(--primary-color);
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2.5rem;
            color: var(--accent-color);
            border-left: 5px solid var(--primary-color);
            padding-left: 15px;
        }
        h3 {
            font-size: 2rem;
        }
        h4 {
            font-size: 1.5rem;
            color: #ccc;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight {
            background-color: rgba(225, 6, 0, 0.1);
            border-left: 4px solid var(--primary-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 2rem auto;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.7);
            border: 2px solid var(--border-color);
        }
        .feature-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .feature-card {
            background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
            padding: 2rem;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(225, 6, 0, 0.2);
        }
        .update-time {
            text-align: right;
            font-style: italic;
            color: #aaa;
            font-size: 0.9rem;
            margin-top: 2rem;
        }
        .form-section {
            margin: 4rem 0;
            padding: 2rem;
            background-color: rgba(30, 30, 30, 0.8);
            border-radius: 10px;
        }
        .form-section h2 {
            margin-top: 0;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        input, textarea, select {
            padding: 1rem;
            border: 1px solid var(--border-color);
            border-radius: 5px;
            background-color: #2a2a2a;
            color: var(--text-color);
            font-size: 1rem;
            width: 100%;
        }
        button {
            padding: 1rem 2rem;
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: 5px;
            font-size: 1.2rem;
            font-weight: bold;
            cursor: pointer;
            transition: background-color 0.3s ease;
            align-self: flex-start;
        }
        button:hover {
            background-color: #c10500;
        }
        .rating {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .rating i {
            color: gold;
            font-size: 1.5rem;
            cursor: pointer;
        }
        footer {
            background-color: var(--secondary-color);
            padding: 3rem 0;
            margin-top: 4rem;
            border-top: 2px solid var(--primary-color);
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        friend-link {
            display: block;
            margin-bottom: 1rem;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.7rem; }
            article { padding: 2rem; }
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            .header-content { flex-wrap: wrap; }
            .feature-box {
                grid-template-columns: 1fr;
            }
        }
        @media (min-width: 769px) {
            .mobile-nav { display: none !important; }
        }