:root {
            --primary-color: #6a11cb;
            --secondary-color: #2575fc;
            --accent-color: #ff4d8d;
            --dark-bg: #0f0f1a;
            --card-bg: #1a1a2e;
            --text-primary: #f0f0f0;
            --text-secondary: #b0b0c0;
            --border-color: #2d2d44;
            --success-color: #4cd964;
            --warning-color: #ffcc00;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: var(--text-primary);
            background: linear-gradient(135deg, var(--dark-bg) 0%, #16162a 100%);
            min-height: 100vh;
        }
        a {
            color: var(--accent-color);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #ff80b0;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: rgba(15, 15, 26, 0.95);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        nav a {
            color: var(--text-primary);
            font-weight: 500;
            padding: 5px 0;
            position: relative;
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-color);
            transition: width 0.3s ease;
        }
        nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: var(--text-primary);
            cursor: pointer;
        }
        .breadcrumb {
            padding: 15px 0;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--accent-color);
        }
        .breadcrumb i {
            margin: 0 8px;
        }
        main {
            padding: 40px 0;
        }
        article {
            background-color: var(--card-bg);
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            margin-bottom: 40px;
        }
        h1 {
            font-size: 2.8rem;
            margin-bottom: 25px;
            background: linear-gradient(to right, #6a11cb, #2575fc);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            margin: 40px 0 20px;
            color: var(--text-primary);
            border-left: 5px solid var(--accent-color);
            padding-left: 15px;
        }
        h3 {
            font-size: 1.6rem;
            margin: 30px 0 15px;
            color: var(--text-primary);
        }
        h4 {
            font-size: 1.3rem;
            margin: 25px 0 12px;
            color: var(--text-secondary);
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            color: var(--text-secondary);
            font-weight: 300;
            margin-bottom: 30px;
        }
        .highlight {
            background: linear-gradient(90deg, rgba(106,17,203,0.2) 0%, rgba(37,117,252,0.2) 100%);
            border-left: 4px solid var(--primary-color);
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 25px;
            margin: 30px 0;
        }
        .tier-card {
            background: rgba(255,255,255,0.05);
            border-radius: 10px;
            padding: 20px;
            border: 1px solid var(--border-color);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .tier-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .tier-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-color);
        }
        .tier-rank {
            font-size: 1.5rem;
            font-weight: bold;
        }
        .tier-s {
            color: #ffcc00;
        }
        .tier-a {
            color: #ff4d8d;
        }
        .tier-b {
            color: #2575fc;
        }
        .interactive-section {
            background: rgba(255,255,255,0.03);
            border-radius: 12px;
            padding: 30px;
            margin: 40px 0;
            border: 1px solid var(--border-color);
        }
        .interactive-section h3 {
            margin-top: 0;
        }
        form {
            display: grid;
            gap: 20px;
            margin-top: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        label {
            margin-bottom: 8px;
            font-weight: 500;
        }
        input, textarea, select {
            padding: 12px 15px;
            background: rgba(255,255,255,0.08);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            color: var(--text-primary);
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--accent-color);
        }
        button {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
            padding: 14px 25px;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: opacity 0.3s ease, transform 0.2s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        button:hover {
            opacity: 0.9;
            transform: scale(1.02);
        }
        .rating {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            font-size: 1.8rem;
            color: var(--text-secondary);
            cursor: pointer;
            transition: color 0.2s ease;
        }
        .star:hover,
        .star.active {
            color: var(--warning-color);
        }
        .image-container {
            margin: 30px 0;
            text-align: center;
        }
        .article-img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.4);
        }
        .caption {
            font-style: italic;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-top: 10px;
        }
        footer {
            background-color: rgba(10, 10, 18, 0.95);
            border-top: 1px solid var(--border-color);
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            list-style: none;
        }
        .friend-links a {
            background: rgba(255,255,255,0.05);
            padding: 8px 15px;
            border-radius: 6px;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .friend-links a:hover {
            background: rgba(255,255,255,0.1);
            color: var(--text-primary);
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .update-time {
            color: var(--success-color);
            font-weight: bold;
            margin: 20px 0;
            display: inline-block;
            background: rgba(76, 217, 100, 0.1);
            padding: 5px 10px;
            border-radius: 5px;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            article { padding: 30px; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            nav ul {
                position: fixed;
                top: 70px;
                left: -100%;
                flex-direction: column;
                background: var(--dark-bg);
                width: 100%;
                text-align: center;
                padding: 20px 0;
                gap: 0;
                border-bottom: 1px solid var(--border-color);
                transition: left 0.3s ease;
            }
            nav ul.active {
                left: 0;
            }
            nav li {
                padding: 15px 0;
            }
            .header-content {
                padding: 12px 0;
            }
            .tier-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 576px) {
            article { padding: 20px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .interactive-section { padding: 20px; }
        }