* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0a0a1a;
            color: #f0f0f0;
            line-height: 1.8;
            overflow-x: hidden;
        }
        a {
            color: #00b4d8;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #90e0ef;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
        }
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        header {
            background: linear-gradient(135deg, #001845 0%, #023e8a 100%);
            padding: 20px 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.5rem;
            font-weight: 900;
            background: linear-gradient(to right, #00b4d8, #90e0ef);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 2px 5px rgba(0, 180, 216, 0.3);
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 25px;
        }
        nav ul li a {
            font-size: 1.1rem;
            padding: 8px 12px;
            border-radius: 5px;
        }
        nav ul li a:hover {
            background-color: rgba(0, 180, 216, 0.2);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #90e0ef;
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #001d3d;
            margin-bottom: 30px;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
        }
        .breadcrumb li {
            margin-right: 10px;
        }
        .breadcrumb li::after {
            content: '›';
            margin-left: 10px;
            color: #00b4d8;
        }
        .breadcrumb li:last-child::after {
            content: '';
        }
        main {
            background-color: #012a4a;
            border-radius: 15px;
            padding: 30px;
            margin-bottom: 40px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.6);
        }
        h1 {
            font-size: 3.2rem;
            color: #00b4d8;
            margin-bottom: 20px;
            text-align: center;
            text-shadow: 0 3px 6px rgba(0, 0, 0, 0.7);
        }
        .update-time {
            text-align: center;
            font-style: italic;
            color: #90e0ef;
            margin-bottom: 40px;
            font-size: 1.1rem;
        }
        h2 {
            font-size: 2.5rem;
            color: #48cae4;
            margin-top: 40px;
            margin-bottom: 20px;
            border-left: 5px solid #00b4d8;
            padding-left: 15px;
        }
        h3 {
            font-size: 2rem;
            color: #90e0ef;
            margin-top: 30px;
            margin-bottom: 15px;
        }
        h4 {
            font-size: 1.5rem;
            color: #ade8f4;
            margin-top: 25px;
            margin-bottom: 10px;
        }
        p {
            margin-bottom: 25px;
            font-size: 1.2rem;
            text-align: justify;
            padding: 0 10px;
        }
        .highlight {
            background-color: rgba(0, 180, 216, 0.15);
            border-left: 4px solid #00b4d8;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 10px 10px 0;
        }
        .emoji {
            font-size: 1.5rem;
            margin-right: 8px;
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
            margin: 30px 0;
        }
        .link-list a {
            background-color: #003566;
            padding: 15px;
            border-radius: 8px;
            display: block;
            text-align: center;
            font-weight: bold;
            transition: transform 0.3s ease, background-color 0.3s ease;
        }
        .link-list a:hover {
            transform: translateY(-5px);
            background-color: #00509e;
        }
        .form-section {
            background-color: #001d3d;
            padding: 25px;
            border-radius: 12px;
            margin: 40px 0;
        }
        .form-section h3 {
            color: #00b4d8;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        input, textarea, select {
            padding: 15px;
            border-radius: 8px;
            border: 2px solid #00509e;
            background-color: #003566;
            color: #f0f0f0;
            font-size: 1.1rem;
            transition: border-color 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #00b4d8;
        }
        button {
            padding: 15px 30px;
            background: linear-gradient(90deg, #0077b6, #0096c7);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 1.2rem;
            cursor: pointer;
            transition: background 0.3s ease, transform 0.2s ease;
        }
        button:hover {
            background: linear-gradient(90deg, #0096c7, #00b4d8);
            transform: scale(1.05);
        }
        footer {
            background-color: #000814;
            padding: 40px 0 20px;
            text-align: center;
        }
        friend-link {
            display: block;
            font-size: 1.8rem;
            color: #00b4d8;
            margin-bottom: 20px;
        }
        .friend-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 30px;
        }
        .friend-links a {
            background-color: #001d3d;
            padding: 10px 20px;
            border-radius: 6px;
            font-weight: bold;
        }
        .copyright {
            color: #90e0ef;
            font-size: 1rem;
            margin-top: 20px;
            border-top: 1px solid #023e8a;
            padding-top: 20px;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.8rem; }
            h2 { font-size: 2.2rem; }
            h3 { font-size: 1.8rem; }
            .link-list { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: #001845;
                position: absolute;
                top: 100%;
                left: 0;
                padding: 20px;
                border-radius: 0 0 15px 15px;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
            }
            nav ul.active {
                display: flex;
            }
            nav ul li {
                margin: 10px 0;
            }
            .link-list { grid-template-columns: 1fr; }
            main { padding: 20px; }
            .form-section { padding: 20px; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            p { font-size: 1.1rem; }
            .my-logo { font-size: 2rem; }
        }