* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            color: #2d3748;
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: #1a365d;
            color: white;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: #f6ad55;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: color 0.3s ease;
        }
        .my-logo:hover {
            color: #fff;
            text-shadow: 0 0 8px rgba(246, 173, 85, 0.7);
        }
        .my-logo i {
            font-size: 1.8rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .main-nav a {
            color: #cbd5e0;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
            transition: all 0.3s ease;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: #f6ad55;
            border-bottom-color: #f6ad55;
        }
        .breadcrumb {
            padding: 12px 0;
            background: #2d3748;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #f6ad55;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: #a0aec0;
            margin: 0 8px;
        }
        main {
            flex: 1;
            padding: 40px 0;
        }
        article {
            background: white;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
            padding: 40px;
            margin-bottom: 40px;
        }
        h1 {
            color: #1a365d;
            font-size: 2.8rem;
            margin-bottom: 25px;
            line-height: 1.2;
            border-bottom: 3px solid #f6ad55;
            padding-bottom: 15px;
        }
        h2 {
            color: #2d3748;
            font-size: 2rem;
            margin: 35px 0 20px;
            padding-left: 15px;
            border-left: 5px solid #4299e1;
        }
        h3 {
            color: #4a5568;
            font-size: 1.6rem;
            margin: 28px 0 15px;
        }
        h4 {
            color: #718096;
            font-size: 1.3rem;
            margin: 24px 0 12px;
        }
        p {
            margin-bottom: 22px;
            text-align: justify;
            font-size: 1.1rem;
        }
        .intro {
            font-size: 1.2rem;
            color: #2d3748;
            background: #ebf8ff;
            padding: 25px;
            border-radius: 10px;
            border-left: 5px solid #4299e1;
            margin-bottom: 35px;
        }
        .highlight {
            background: linear-gradient(120deg, #fed7e2 0%, #fbb6ce 100%);
            padding: 25px;
            border-radius: 12px;
            margin: 30px 0;
            border-left: 6px solid #d53f8c;
        }
        blockquote {
            font-style: italic;
            color: #4a5568;
            border-left: 4px solid #f6ad55;
            padding-left: 25px;
            margin: 30px 40px;
            background: #fffaf0;
            padding: 20px;
            border-radius: 0 10px 10px 0;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
            display: block;
            margin: 30px auto;
            border: 1px solid #e2e8f0;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #718096;
            margin-top: -20px;
            margin-bottom: 30px;
            font-size: 0.95rem;
        }
        ul, ol {
            margin: 20px 0 20px 40px;
        }
        li {
            margin-bottom: 10px;
        }
        a {
            color: #3182ce;
            text-decoration: none;
            border-bottom: 1px dotted #3182ce;
            transition: all 0.2s ease;
        }
        a:hover {
            color: #2b6cb0;
            border-bottom-style: solid;
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 15px;
            margin: 30px 0;
            padding: 20px;
            background: #f7fafc;
            border-radius: 10px;
        }
        .link-list a {
            display: block;
            padding: 12px 15px;
            background: white;
            border-radius: 8px;
            box-shadow: 0 3px 8px rgba(0,0,0,0.05);
            border-left: 4px solid #38a169;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .link-list a:hover {
            transform: translateY(-4px);
            box-shadow: 0 6px 14px rgba(0,0,0,0.1);
            border-left-color: #f6ad55;
        }
        strong {
            color: #2d3748;
            font-weight: 700;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin: 35px 0;
        }
        .stat-box {
            background: #f0fff4;
            padding: 25px;
            border-radius: 12px;
            text-align: center;
            border-top: 6px solid #38a169;
            transition: transform 0.3s ease;
        }
        .stat-box:hover {
            transform: scale(1.03);
        }
        .stat-box h4 {
            color: #276749;
            margin-top: 0;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: #1a365d;
            line-height: 1;
        }
        .last-updated {
            text-align: right;
            font-size: 0.9rem;
            color: #a0aec0;
            margin-top: 40px;
            padding-top: 15px;
            border-top: 1px dashed #e2e8f0;
        }
        .user-interaction {
            background: #edf2f7;
            padding: 30px;
            border-radius: 15px;
            margin: 40px 0;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        .feature-box {
            background: white;
            padding: 25px;
            border-radius: 12px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.05);
        }
        .feature-box h3 {
            margin-top: 0;
            color: #1a365d;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feature-box form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 20px;
        }
        input, textarea, select {
            padding: 14px;
            border: 1px solid #cbd5e0;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #3182ce;
            box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.2);
        }
        button {
            background: linear-gradient(to right, #3182ce, #2b6cb0);
            color: white;
            border: none;
            padding: 16px 24px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1.05rem;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        button:hover {
            background: linear-gradient(to right, #2c5282, #1a365d);
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(49, 130, 206, 0.3);
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            font-size: 2rem;
            color: #cbd5e0;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star.active {
            color: #f6ad55;
        }
        footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: #f6ad55;
            margin-bottom: 25px;
            font-size: 1.4rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #a0aec0;
            text-decoration: none;
            border-bottom: none;
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: #f6ad55;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            padding: 15px;
            background: #2d3748;
            border-radius: 8px;
            margin-bottom: 15px;
            text-align: center;
        }
        friend-link a {
            color: #f6ad55;
            font-weight: 600;
            font-size: 1.1rem;
            border-bottom: none;
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid #4a5568;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        @media (max-width: 992px) {
            .container {
                padding: 0 15px;
            }
            article {
                padding: 30px;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
                order: 1;
            }
            .my-logo {
                order: 0;
                font-size: 1.8rem;
            }
            .main-nav {
                display: none;
                width: 100%;
                order: 2;
                margin-top: 20px;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                border-bottom: 1px solid #2d3748;
            }
            .main-nav a {
                display: block;
                padding: 15px;
                border-bottom: none;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            article {
                padding: 25px 20px;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            .link-list {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .my-logo span {
                display: none;
            }
            h1 {
                font-size: 1.8rem;
            }
            .stat-box {
                padding: 20px 15px;
            }
        }