* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #0a1a2d;
            color: #e6f1ff;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: #4fc3f7;
            text-decoration: none;
            transition: color 0.3s ease, transform 0.2s ease;
        }
        a:hover {
            color: #29b6f6;
            transform: translateY(-2px);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 10px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(135deg, #1a73e8, #0d47a1);
            color: white;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.4s ease;
            box-shadow: 0 4px 15px rgba(26, 115, 232, 0.3);
        }
        .btn:hover {
            background: linear-gradient(135deg, #0d47a1, #1a73e8);
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(26, 115, 232, 0.5);
        }
        header {
            background: linear-gradient(180deg, #0d2b4e 0%, #0a1a2d 100%);
            padding: 20px 0;
            border-bottom: 3px solid #1a73e8;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #ffd700, #ff9800);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 10px rgba(255, 215, 0, 0.3);
            letter-spacing: 1px;
        }
        .my-logo a {
            background: none;
            -webkit-text-fill-color: unset;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        nav a {
            color: #bbdefb;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 5px;
            position: relative;
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ffd700;
            transition: width 0.3s ease;
        }
        nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #ffd700;
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.95rem;
            color: #90a4ae;
        }
        .breadcrumb a {
            color: #bbdefb;
        }
        .breadcrumb span {
            margin: 0 8px;
            color: #ffd700;
        }
        main {
            padding: 40px 0;
            background-color: #0f2438;
            border-radius: 20px 20px 0 0;
            margin-top: 20px;
        }
        article {
            max-width: 900px;
            margin: 0 auto;
            padding: 30px;
            background: rgba(13, 43, 78, 0.7);
            border-radius: 20px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
        }
        h1, h2, h3, h4 {
            color: #ffd700;
            margin-top: 1.8em;
            margin-bottom: 0.7em;
            line-height: 1.3;
            font-weight: 800;
        }
        h1 {
            font-size: 3.2rem;
            text-align: center;
            border-bottom: 4px solid #1a73e8;
            padding-bottom: 20px;
            margin-top: 0;
            text-shadow: 0 2px 10px rgba(255, 215, 0, 0.2);
        }
        h2 {
            font-size: 2.4rem;
            border-left: 5px solid #29b6f6;
            padding-left: 20px;
        }
        h3 {
            font-size: 1.8rem;
            color: #4fc3f7;
        }
        h4 {
            font-size: 1.4rem;
            color: #80deea;
        }
        p {
            margin-bottom: 1.8em;
            font-size: 1.15rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.4rem;
            font-weight: 300;
            color: #bbdefb;
            text-align: center;
            margin-bottom: 2.5em;
            padding: 0 10%;
        }
        .highlight {
            background: linear-gradient(90deg, rgba(26, 115, 232, 0.1), transparent);
            border-left: 4px solid #ffd700;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 10px 10px 0;
        }
        strong {
            color: #ffd700;
            font-weight: 700;
        }
        em {
            color: #80deea;
            font-style: italic;
        }
        .feature-img {
            width: 80%;
            margin: 40px auto;
            position: relative;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #90a4ae;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .interactive-module {
            background: rgba(10, 26, 45, 0.8);
            border-radius: 15px;
            padding: 30px;
            margin: 40px 0;
            border: 2px solid #1a73e8;
        }
        .module-title {
            color: #ffd700;
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .module-title i {
            font-size: 1.8rem;
        }
        form {
            display: grid;
            gap: 20px;
            margin-top: 20px;
        }
        input, textarea, select {
            width: 100%;
            padding: 15px;
            border-radius: 10px;
            border: 2px solid #1a73e8;
            background: rgba(255, 255, 255, 0.05);
            color: #e6f1ff;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #ffd700;
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            font-size: 2rem;
            color: #ccc;
            cursor: pointer;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: #ffd700;
        }
        .related-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin: 40px 0;
            padding: 25px;
            background: rgba(255, 215, 0, 0.05);
            border-radius: 15px;
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 20px;
            background: rgba(26, 115, 232, 0.1);
            border-radius: 10px;
            border: 1px solid rgba(26, 115, 232, 0.3);
        }
        .related-links a:hover {
            background: rgba(26, 115, 232, 0.2);
            border-color: #1a73e8;
        }
        footer {
            background: #0a1a2d;
            padding: 50px 0 30px;
            border-top: 3px solid #1a73e8;
            text-align: center;
        }
        friend-link {
            display: block;
            margin: 25px 0;
            font-size: 1.1rem;
        }
        friend-link a {
            color: #ffd700;
            font-weight: 700;
        }
        .copyright {
            color: #90a4ae;
            font-size: 0.9rem;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #1c2e3f;
        }
        .update-time {
            color: #4fc3f7;
            font-weight: 600;
            margin-top: 10px;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2.1rem; }
            .lead { padding: 0 5%; }
            .feature-img { width: 90%; }
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; gap: 20px; }
            .my-logo { font-size: 1.9rem; }
            nav ul {
                flex-direction: column;
                gap: 15px;
                text-align: center;
                background: #0d2b4e;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                padding: 20px;
                transform: translateY(-150%);
                opacity: 0;
                transition: transform 0.5s ease, opacity 0.3s ease;
                z-index: 999;
                border-top: 2px solid #1a73e8;
            }
            #nav-toggle:checked ~ nav ul {
                transform: translateY(0);
                opacity: 1;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 25px;
                right: 20px;
            }
            h1 { font-size: 2.3rem; }
            h2 { font-size: 1.9rem; }
            article { padding: 20px; }
            .related-links { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 1.9rem; }
            h2 { font-size: 1.6rem; }
            .btn { padding: 10px 20px; }
            .interactive-module { padding: 20px; }
        }