* { 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: linear-gradient(135deg, #0f1b2c 0%, #1a2b3e 100%);
            background-attachment: fixed;
            max-width: 100%;
            overflow-x: hidden;
        }
        a { color: #00b4ff; text-decoration: none; transition: color 0.3s ease, text-shadow 0.3s ease; }
        a:hover { color: #ffcc00; text-shadow: 0 0 8px rgba(255, 204, 0, 0.5); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 1.5em; margin: 1em 0; }
        li { margin-bottom: 0.5em; }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
        }
        @media (min-width: 992px) {
            .main-grid {
                grid-template-columns: 3fr 1fr;
            }
        }
        .site-header {
            background: rgba(10, 20, 35, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 2px solid #00b4ff;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Arial Black', Impact, sans-serif;
            font-size: 2.2rem;
            background: linear-gradient(90deg, #00b4ff, #ff3366);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            letter-spacing: 1px;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }
        .my-logo:hover {
            animation: logo-glow 1.5s ease-in-out infinite alternate;
        }
        @keyframes logo-glow {
            from { text-shadow: 0 0 10px rgba(0, 180, 255, 0.5); }
            to { text-shadow: 0 0 20px rgba(255, 51, 102, 0.7); }
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 1.8rem;
        }
        .main-nav a {
            color: #c0d0e0;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 0.3rem;
            position: relative;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #ffcc00;
            transition: width 0.4s ease;
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #00b4ff;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 70px;
                right: -100%;
                width: 70%;
                height: calc(100vh - 70px);
                background: rgba(15, 27, 44, 0.98);
                backdrop-filter: blur(15px);
                border-left: 1px solid #2a3f5f;
                transition: right 0.4s ease;
                overflow-y: auto;
                padding: 2rem;
            }
            .main-nav.active {
                right: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1.5rem;
            }
        }
        .breadcrumb {
            padding: 1rem 0;
            font-size: 0.9rem;
            color: #a0b0c8;
            background: rgba(30, 45, 70, 0.3);
            border-radius: 0 0 8px 8px;
            margin-bottom: 2rem;
        }
        .breadcrumb a { color: #80c8ff; }
        .search-bar {
            margin: 2rem 0;
            background: rgba(40, 55, 80, 0.6);
            padding: 1.5rem;
            border-radius: 12px;
            border: 1px solid #3a5a80;
        }
        .search-form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.2rem;
            border: 2px solid #00b4ff;
            border-radius: 8px 0 0 8px;
            background: #1e2b3d;
            color: #fff;
            font-size: 1rem;
        }
        .search-btn {
            background: linear-gradient(90deg, #00b4ff, #0088cc);
            color: white;
            border: none;
            padding: 1rem 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s ease;
        }
        .search-btn:hover {
            background: linear-gradient(90deg, #00ccff, #0099ee);
        }
        .article-content {
            background: rgba(25, 38, 58, 0.7);
            backdrop-filter: blur(10px);
            border-radius: 16px;
            padding: 2.5rem;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
            border: 1px solid #334d66;
            margin-bottom: 2rem;
        }
        .article-header { margin-bottom: 2.5rem; }
        .article-header h1 {
            font-size: 2.8rem;
            background: linear-gradient(90deg, #ffcc00, #ff9900);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: #b0c4de;
            font-size: 0.95rem;
            padding-bottom: 1rem;
            border-bottom: 1px dashed #3a5a80;
        }
        .last-updated { color: #00ffaa; font-weight: bold; }
        h2 {
            font-size: 2.2rem;
            color: #66ccff;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid rgba(102, 204, 255, 0.3);
        }
        h3 {
            font-size: 1.8rem;
            color: #ff9966;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #99ff99;
            margin: 1.5rem 0 0.8rem;
        }
        .hero-emoji { font-size: 1.3em; margin-right: 0.5rem; }
        .lead {
            font-size: 1.3rem;
            color: #d0e0f0;
            font-weight: 300;
            margin-bottom: 2rem;
            padding: 1.5rem;
            background: rgba(40, 60, 90, 0.4);
            border-left: 5px solid #ffcc00;
            border-radius: 0 8px 8px 0;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            color: #e0e8f0;
        }
        .highlight {
            background: linear-gradient(90deg, rgba(255,204,0,0.15), rgba(255,153,0,0.1));
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 4px solid #ffcc00;
            margin: 1.5rem 0;
        }
        .tip-box {
            background: rgba(0, 180, 255, 0.1);
            border: 1px solid #00b4ff;
            border-radius: 10px;
            padding: 1.5rem;
            margin: 1.5rem 0;
        }
        .tip-box i { color: #00b4ff; margin-right: 0.8rem; }
        strong { color: #ffcc00; font-weight: 700; }
        .hero-featured-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 12px;
            border: 3px solid #3a5a80;
            margin: 2rem 0;
            box-shadow: 0 10px 20px rgba(0,0,0,0.5);
            transition: transform 0.5s ease;
        }
        .hero-featured-img:hover {
            transform: scale(1.01);
        }
        .internal-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
            margin: 2.5rem 0;
        }
        .link-card {
            background: rgba(50, 70, 100, 0.5);
            border-radius: 10px;
            padding: 1.2rem;
            border: 1px solid #4a6a94;
            transition: transform 0.3s ease, border-color 0.3s ease;
        }
        .link-card:hover {
            transform: translateY(-5px);
            border-color: #ffcc00;
        }
        .sidebar {
            background: rgba(20, 35, 55, 0.8);
            border-radius: 16px;
            padding: 1.8rem;
            border: 1px solid #2a4565;
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            font-size: 1.5rem;
            color: #66ccff;
            margin-top: 0;
            padding-bottom: 0.8rem;
            border-bottom: 1px solid #3a5a80;
        }
        .sidebar ul {
            list-style: none;
            padding-left: 0;
        }
        .sidebar li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed rgba(90, 130, 180, 0.3);
        }
        .sidebar a { color: #c0d8ff; }
        .user-interaction {
            margin: 3rem 0;
            padding: 2rem;
            background: rgba(40, 60, 90, 0.5);
            border-radius: 16px;
            border: 1px solid #4a6a94;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
        }
        @media (min-width: 768px) {
            .interaction-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        .rating-form, .comment-form {
            background: rgba(30, 45, 70, 0.7);
            padding: 1.8rem;
            border-radius: 12px;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 2rem;
            color: #555;
        }
        .star {
            cursor: pointer;
            transition: color 0.2s;
        }
        .star.active,
        .star:hover,
        .star:hover ~ .star {
            color: #ffcc00;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            color: #b0c4de;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 0.9rem;
            border: 1px solid #3a5a80;
            border-radius: 8px;
            background: #1e2b3d;
            color: #fff;
            font-size: 1rem;
        }
        textarea {
            min-height: 150px;
            resize: vertical;
        }
        .submit-btn {
            background: linear-gradient(90deg, #ff3366, #cc0044);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s ease, transform 0.2s;
        }
        .submit-btn:hover {
            background: linear-gradient(90deg, #ff5588, #dd2255);
            transform: translateY(-2px);
        }
        .site-footer {
            background: rgba(10, 20, 35, 0.98);
            border-top: 2px solid #00b4ff;
            padding: 3rem 0 2rem;
            margin-top: 3rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h4 {
            color: #66ccff;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        friend-link {
            display: block;
            margin-bottom: 0.8rem;
        }
        friend-link a {
            color: #a0c8ff;
            padding: 0.3rem 0;
            display: inline-block;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #2a3f5f;
            color: #8899aa;
            font-size: 0.9rem;
        }