* { 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: #f0f0f0;
            background: #0a0a1a;
            background-image: radial-gradient(circle at 20% 30%, rgba(30, 30, 70, 0.8) 0%, transparent 20%),
                              radial-gradient(circle at 80% 80%, rgba(70, 10, 40, 0.6) 0%, transparent 20%);
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        a { color: #4dabf7; text-decoration: none; transition: color 0.3s, transform 0.2s; }
        a:hover { color: #74c0fc; text-shadow: 0 0 8px rgba(116, 192, 252, 0.7); transform: translateY(-1px); }
        img { max-width: 100%; height: auto; display: block; }
        .container { width: 100%; }
        .site-header {
            display: flex;
            flex-direction: column;
            padding: 1.5rem 0;
            border-bottom: 2px solid #333366;
            margin-bottom: 2rem;
            position: relative;
        }
        .logo-area {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-family: 'Arial Black', Gadget, sans-serif;
            font-size: 2.8rem;
            background: linear-gradient(90deg, #ffd700, #ff6b00, #9d4edd);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 0 0 15px rgba(157, 78, 221, 0.3);
        }
        .my-logo a { color: inherit; }
        .my-logo span { color: #00c8ff; }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            background: transparent;
            border: none;
            padding: 5px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background: #4dabf7;
            margin: 3px 0;
            border-radius: 2px;
            transition: 0.3s;
        }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(7px, -6px); }
        .main-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: rgba(20, 20, 40, 0.95);
            padding: 0.8rem 1.5rem;
            border-radius: 12px;
            margin-top: 1.5rem;
            border: 1px solid #444488;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-menu li { margin: 0 0.8rem; }
        .nav-menu a {
            color: #ccccff;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 6px;
            display: block;
        }
        .nav-menu a:hover { background: rgba(77, 171, 247, 0.15); }
        .nav-menu a i { margin-right: 5px; }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #aaa;
        }
        .breadcrumb a { color: #aaa; }
        .breadcrumb a:hover { color: #74c0fc; }
        .breadcrumb span { margin: 0 8px; color: #666; }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }
        article { background: rgba(15, 15, 35, 0.8); padding: 2.5rem; border-radius: 16px; border: 1px solid #2a2a5a; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5); }
        aside { background: rgba(20, 20, 45, 0.8); padding: 1.8rem; border-radius: 16px; border: 1px solid #333366; align-self: start; position: sticky; top: 20px; }
        h1 {
            font-size: 3.2rem;
            color: #ffd700;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-shadow: 0 0 10px rgba(255, 215, 0, 0.4);
            border-bottom: 3px solid #333366;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #4dabf7;
            margin: 2.5rem 0 1rem;
            padding-left: 10px;
            border-left: 5px solid #4dabf7;
        }
        h3 {
            font-size: 1.7rem;
            color: #9d4edd;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #00c8ff;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: #ccccff;
            font-weight: 500;
            padding: 1.2rem;
            background: rgba(45, 45, 85, 0.4);
            border-left: 4px solid #ff6b00;
            border-radius: 0 8px 8px 0;
            margin-bottom: 2rem;
        }
        .highlight {
            background: linear-gradient(90deg, rgba(255, 107, 0, 0.15), transparent);
            padding: 1.5rem;
            border-radius: 8px;
            border: 1px solid #ff6b00;
            margin: 1.5rem 0;
        }
        .quote {
            font-style: italic;
            color: #aaaaff;
            border-left: 4px solid #9d4edd;
            padding-left: 1.5rem;
            margin: 2rem 0;
        }
        strong { color: #ffb142; font-weight: 700; }
        em { color: #aaaaff; }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .content-link {
            background: rgba(77, 171, 247, 0.1);
            padding: 2px 6px;
            border-radius: 4px;
            border-bottom: 1px dashed #4dabf7;
        }
        .article-image {
            width: 100%;
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            border: 2px solid #444488;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.7);
        }
        .article-image img { width: 100%; transition: transform 0.5s; }
        .article-image:hover img { transform: scale(1.03); }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #888;
            padding: 0.8rem;
            background: rgba(30, 30, 50, 0.7);
            font-size: 0.95rem;
        }
        ul, ol {
            margin: 1.5rem 0 1.5rem 2rem;
            padding-left: 1rem;
        }
        li { margin-bottom: 0.7rem; }
        .module {
            margin-bottom: 2.5rem;
        }
        .module h3 {
            font-size: 1.4rem;
            color: #ffd700;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #444488;
        }
        .side-nav a {
            display: block;
            padding: 0.8rem 1rem;
            margin-bottom: 0.5rem;
            background: rgba(40, 40, 70, 0.6);
            border-radius: 6px;
            border-left: 3px solid #4dabf7;
        }
        .side-nav a:hover { background: rgba(77, 171, 247, 0.2); }
        .form-group {
            margin-bottom: 1.2rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            color: #ccccff;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem 1rem;
            background: rgba(30, 30, 50, 0.8);
            border: 1px solid #555599;
            border-radius: 8px;
            color: #f0f0f0;
            font-size: 1rem;
            transition: border 0.3s, box-shadow 0.3s;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #4dabf7;
            box-shadow: 0 0 0 3px rgba(77, 171, 247, 0.2);
        }
        .form-btn {
            background: linear-gradient(90deg, #ff6b00, #ffd700);
            color: #000;
            border: none;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.2s, box-shadow 0.2s;
            width: 100%;
        }
        .form-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(255, 107, 0, 0.4);
        }
        .rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            margin: 0.5rem 0;
        }
        .rating input { display: none; }
        .rating label {
            color: #555;
            font-size: 2rem;
            padding: 0 3px;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label { color: #ffd700; }
        footer {
            background: rgba(10, 10, 25, 0.9);
            border-top: 2px solid #333366;
            padding: 3rem 2rem;
            border-radius: 16px 16px 0 0;
            margin-top: 4rem;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-links h4 {
            color: #ffd700;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        .footer-links a {
            display: block;
            margin-bottom: 0.7rem;
            color: #aaaaff;
        }
        friend-link {
            display: block;
            padding: 1rem;
            background: rgba(30, 30, 60, 0.6);
            margin: 1rem 0;
            border-radius: 8px;
            border-left: 4px solid #9d4edd;
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #333366;
            color: #888;
            font-size: 0.9rem;
        }
        .update-time {
            color: #00c8ff;
            font-weight: bold;
            background: rgba(0, 200, 255, 0.1);
            padding: 0.5rem 1rem;
            border-radius: 6px;
            display: inline-block;
            margin-top: 1rem;
        }
        @media (max-width: 992px) {
            main { grid-template-columns: 1fr; }
            aside { position: static; }
        }
        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .main-nav { flex-wrap: wrap; }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 1rem;
                padding-top: 1rem;
                border-top: 1px solid #444488;
            }
            .nav-menu.active { display: flex; }
            .nav-menu li { margin: 0.5rem 0; }
            h1 { font-size: 2.5rem; }
            h2 { font-size: 1.9rem; }
            article, aside { padding: 1.5rem; }
            .my-logo { font-size: 2.2rem; }
        }
        @media (max-width: 480px) {
            body { padding: 0 10px; }
            h1 { font-size: 2rem; }
            .lead { font-size: 1.1rem; }
            .my-logo { font-size: 1.8rem; }
        }