* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #e0e0e0;
            background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #0c0c14 100%);
            background-attachment: fixed;
            max-width: 1400px;
            margin: 0 auto;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.7);
            position: relative;
            min-height: 100vh;
        }
        body::before {
            content: '';
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" opacity="0.02"><rect width="100" height="100" fill="none" stroke="%2344aaff" stroke-width="1"/></svg>') repeat;
            pointer-events: none;
            z-index: -1;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: 'Arial Black', 'Arial Bold', Gadget, sans-serif;
            color: #44aaff;
            margin-bottom: 1rem;
            line-height: 1.3;
            text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
        }
        h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            color: #00ccff;
            border-bottom: 3px solid #ff3366;
            padding-bottom: 0.5rem;
            margin-top: 1.5rem;
            background: linear-gradient(90deg, #00ccff, #ff3366);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-align: center;
        }
        h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            color: #33bbff;
            border-left: 5px solid #ff3366;
            padding-left: 15px;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: clamp(1.4rem, 2.5vw, 1.8rem);
            color: #66ccff;
            margin-top: 2rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #88ddff;
            margin-top: 1.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        a {
            color: #44aaff;
            text-decoration: none;
            transition: all 0.3s ease;
            border-bottom: 1px dotted #44aaff;
        }
        a:hover {
            color: #ff3366;
            border-bottom: 1px solid #ff3366;
        }
        strong {
            color: #ffcc00;
            font-weight: 700;
        }
        em { color: #aaeeff; font-style: italic; }
        blockquote {
            border-left: 4px solid #ff3366;
            padding: 1rem 1.5rem;
            margin: 2rem 0;
            background: rgba(255, 51, 102, 0.05);
            font-style: italic;
            border-radius: 0 8px 8px 0;
        }
        .container {
            width: 95%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        .site-header {
            background: rgba(10, 15, 25, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #223344;
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 1rem 0;
        }
        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            color: #00ccff;
            text-decoration: none;
            border: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover { color: #ff3366; border: none; }
        .my-logo i { color: #ff3366; }
        .breadcrumb {
            background: rgba(30, 40, 60, 0.7);
            padding: 0.8rem 1.5rem;
            border-radius: 8px;
            margin: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #88aaff; }
        .breadcrumb span { color: #cccccc; }
        .main-nav {
            display: flex;
            align-items: center;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .nav-list a {
            color: #ccddff;
            font-weight: 600;
            border: none;
            padding: 0.5rem 0;
            position: relative;
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #ff3366;
            transition: width 0.3s ease;
        }
        .nav-list a:hover::after { width: 100%; }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #44aaff;
            color: #44aaff;
            font-size: 1.5rem;
            padding: 0.5rem 0.8rem;
            border-radius: 5px;
            cursor: pointer;
        }
        .hero {
            background: linear-gradient(rgba(0, 20, 40, 0.85), rgba(0, 10, 20, 0.9)), url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1600&q=80');
            background-size: cover;
            background-position: center;
            padding: 4rem 2rem;
            text-align: center;
            border-radius: 12px;
            margin: 2rem 0;
            border: 1px solid #334466;
        }
        .hero h1 { color: #ffffff; border: none; background: none; -webkit-text-fill-color: white; }
        .user-interaction {
            background: rgba(20, 30, 50, 0.8);
            padding: 2rem;
            border-radius: 12px;
            margin: 2.5rem 0;
            border: 1px solid #445577;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        .interaction-box h3 { margin-top: 0; }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            color: #aaccff;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem 1rem;
            background: rgba(10, 20, 40, 0.8);
            border: 1px solid #556677;
            border-radius: 6px;
            color: #e0e0e0;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #44aaff;
            box-shadow: 0 0 8px rgba(68, 170, 255, 0.5);
        }
        button, .btn {
            background: linear-gradient(90deg, #44aaff, #ff3366);
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 6px;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(255, 51, 102, 0.4);
        }
        .star-rating {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #555;
            direction: rtl;
        }
        .star-rating input { display: none; }
        .star-rating label {
            cursor: pointer;
            color: #555;
            transition: color 0.3s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label { color: #ffcc00; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        .article-content {
            background: rgba(15, 25, 40, 0.7);
            padding: 2.5rem;
            border-radius: 12px;
            border: 1px solid #334466;
        }
        .sidebar {
            background: rgba(25, 35, 55, 0.7);
            padding: 2rem;
            border-radius: 12px;
            border: 1px solid #334466;
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar h3 { border-bottom: 2px solid #44aaff; padding-bottom: 0.5rem; }
        .article-img {
            width: 100%;
            height: auto;
            border-radius: 10px;
            margin: 2rem 0;
            border: 3px solid #445577;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
            transition: transform 0.5s ease;
        }
        .article-img:hover { transform: scale(1.02); }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #aaa;
            margin-top: -1rem;
            margin-bottom: 2rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li { margin-bottom: 0.7rem; }
        .link-list {
            list-style: none;
            margin-left: 0;
        }
        .link-list li {
            padding: 0.8rem;
            background: rgba(40, 60, 90, 0.5);
            margin-bottom: 0.8rem;
            border-radius: 6px;
            border-left: 4px solid #44aaff;
            transition: background 0.3s ease;
        }
        .link-list li:hover { background: rgba(60, 100, 150, 0.6); }
        .site-footer {
            background: rgba(5, 10, 20, 0.95);
            border-top: 2px solid #223344;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #334466;
            color: #8899aa;
            font-size: 0.9rem;
        }
        friend-link {
            display: block;
            padding: 0.5rem;
            background: rgba(68, 170, 255, 0.1);
            margin: 0.5rem 0;
            border-radius: 4px;
            transition: background 0.3s ease;
        }
        friend-link:hover { background: rgba(68, 170, 255, 0.3); }
        .update-info {
            background: rgba(255, 51, 102, 0.1);
            padding: 1rem;
            border-radius: 8px;
            margin: 2rem 0;
            border-left: 5px solid #ff3366;
        }
        @media (max-width: 1024px) {
            .main-content { grid-template-columns: 1fr; }
            .sidebar { position: static; }
        }
        @media (max-width: 768px) {
            .nav-list {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 15, 25, 0.98);
                padding: 1.5rem;
                border-top: 2px solid #223344;
            }
            .nav-list.active { display: flex; }
            .nav-toggle { display: block; }
            .header-inner { justify-content: space-between; }
            .hero { padding: 2.5rem 1rem; }
            .article-content, .sidebar { padding: 1.5rem; }
            .user-interaction { grid-template-columns: 1fr; padding: 1.5rem; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.6rem; }
            .my-logo { font-size: 1.8rem; }
            .breadcrumb { font-size: 0.8rem; }
        }
        .emoji { font-size: 1.2em; margin-right: 5px; }
        .highlight {
            background: linear-gradient(90deg, rgba(255,51,102,0.2), rgba(68,170,255,0.2));
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
        }
        .tip-box {
            background: rgba(68, 170, 255, 0.1);
            border: 1px dashed #44aaff;
            padding: 1.2rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }