:root {
            --primary-dark: #0a0a12;
            --secondary-dark: #1a1a2e;
            --accent-color: #00ccff;
            --accent-hover: #33ddff;
            --text-primary: #f0f0f0;
            --text-secondary: #cccccc;
            --border-color: #333355;
            --card-bg: #16162a;
            --success-color: #4CAF50;
            --warning-color: #ff9800;
            --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: var(--font-main);
            background-color: var(--primary-dark);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--accent-color);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: var(--accent-hover);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--secondary-dark);
            border-bottom: 2px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        .my-logo a {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #00ccff, #9900ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo a:hover {
            opacity: 0.9;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        nav ul li a {
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 12px;
            border-radius: 5px;
        }
        nav ul li a:hover {
            background-color: rgba(0, 204, 255, 0.1);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--accent-color);
        }
        .breadcrumb {
            background-color: var(--card-bg);
            padding: 12px 20px;
            font-size: 0.95rem;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb a {
            margin: 0 5px;
        }
        .breadcrumb a:first-child {
            margin-left: 0;
        }
        .breadcrumb span {
            color: var(--text-secondary);
            margin: 0 5px;
        }
        main {
            padding: 30px 0;
            min-height: 100vh;
        }
        article {
            background-color: var(--card-bg);
            border-radius: 12px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
        }
        h1 {
            font-size: 2.8rem;
            margin-bottom: 20px;
            color: var(--accent-color);
            text-align: center;
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2.2rem;
            margin: 35px 0 20px;
            color: #99eeff;
            border-left: 5px solid var(--accent-color);
            padding-left: 15px;
        }
        h3 {
            font-size: 1.8rem;
            margin: 28px 0 15px;
            color: #ccffff;
        }
        h4 {
            font-size: 1.5rem;
            margin: 25px 0 12px;
            color: #e6f7ff;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            text-align: justify;
        }
        .highlight {
            background-color: rgba(0, 204, 255, 0.1);
            border-left: 4px solid var(--accent-color);
            padding: 18px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .content-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            border: 3px solid var(--border-color);
            margin: 25px auto;
            display: block;
            transition: transform 0.4s ease;
        }
        .content-image:hover {
            transform: scale(1.02);
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 30px 0;
            padding: 20px;
            background-color: var(--secondary-dark);
            border-radius: 10px;
        }
        .link-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px;
            background-color: var(--card-bg);
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }
        .link-list a:hover {
            background-color: rgba(0, 204, 255, 0.15);
            border-color: var(--accent-color);
        }
        .link-list i {
            color: var(--accent-color);
        }
        .feature-box {
            background-color: var(--secondary-dark);
            border-radius: 12px;
            padding: 25px;
            margin: 35px 0;
            border: 2px solid var(--border-color);
        }
        .feature-box h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feature-box form {
            display: flex;
            flex-direction: column;
            gap: 18px;
            max-width: 600px;
        }
        .feature-box input, .feature-box textarea, .feature-box select {
            padding: 14px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background-color: var(--primary-dark);
            color: var(--text-primary);
            font-size: 1rem;
            width: 100%;
        }
        .feature-box input:focus, .feature-box textarea:focus, .feature-box select:focus {
            outline: none;
            border-color: var(--accent-color);
            box-shadow: 0 0 8px rgba(0, 204, 255, 0.5);
        }
        .feature-box button {
            padding: 14px 25px;
            background: linear-gradient(90deg, var(--accent-color), #0066cc);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: bold;
            font-size: 1.1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            align-self: flex-start;
        }
        .feature-box button:hover {
            background: linear-gradient(90deg, var(--accent-hover), #0088ff);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(0, 204, 255, 0.4);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 2rem;
            color: #555;
            cursor: pointer;
            transition: color 0.3s;
        }
        .rating-stars label:hover,
        .rating-stars label:hover ~ label {
            color: var(--warning-color);
        }
        .rating-stars input:checked ~ label {
            color: var(--warning-color);
        }
        footer {
            background-color: var(--secondary-dark);
            border-top: 2px solid var(--border-color);
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-section h4 {
            margin-bottom: 20px;
            color: var(--accent-color);
        }
        .friend-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        friend-link {
            display: block;
            padding: 10px;
            background-color: var(--card-bg);
            border-radius: 6px;
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }
        friend-link:hover {
            border-color: var(--accent-color);
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .update-time {
            text-align: right;
            font-style: italic;
            color: var(--text-secondary);
            margin-top: 30px;
            padding-top: 15px;
            border-top: 1px dashed var(--border-color);
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .header-container { flex-wrap: wrap; }
            nav ul { gap: 15px; }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: var(--secondary-dark);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 20px;
                border-top: 2px solid var(--border-color);
                box-shadow: 0 10px 20px rgba(0,0,0,0.3);
            }
            nav ul.active {
                display: flex;
            }
            nav ul li {
                margin: 10px 0;
            }
            .link-list {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            article { padding: 20px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            .feature-box { padding: 20px; }
        }