:root {
            --primary: #FF4D80;
            --secondary: #4ECDC4;
            --dark: #292F36;
            --light: #F7FFF7;
            --gray: #6C757D;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #f8f9fa;
            color: var(--dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: white;
            box-shadow: var(--shadow);
            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: 900;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 2px;
            background: linear-gradient(45deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 30px;
        }
        .nav-links a {
            font-weight: 600;
            color: var(--dark);
            padding: 5px 0;
            position: relative;
        }
        .nav-links a:hover:after {
            width: 100%;
        }
        .nav-links a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--secondary);
            transition: var(--transition);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--dark);
        }
        .breadcrumb {
            background: #e9ecef;
            padding: 12px 0;
            font-size: 0.9rem;
            margin-bottom: 30px;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb i {
            margin: 0 10px;
            color: #adb5bd;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin: 30px 0;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: var(--shadow);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 1px dashed #dee2e6;
            color: var(--gray);
            font-size: 0.95rem;
        }
        .update-time {
            color: var(--primary);
            font-weight: 600;
        }
        h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--dark);
        }
        h2 {
            font-size: 2rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--secondary);
            color: var(--dark);
        }
        h3 {
            font-size: 1.5rem;
            margin: 30px 0 15px;
            color: #495057;
        }
        h4 {
            font-size: 1.2rem;
            margin: 25px 0 10px;
            color: var(--gray);
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            padding: 25px;
            border-left: 5px solid var(--primary);
            border-radius: 0 10px 10px 0;
            margin-bottom: 30px;
        }
        .highlight {
            background-color: #fff9db;
            border-left: 4px solid #ffd43b;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .solution-box {
            background: #e7f5ff;
            border: 1px solid #a5d8ff;
            border-radius: 10px;
            padding: 25px;
            margin: 25px 0;
        }
        .solution-box h4 {
            color: #1971c2;
            margin-top: 0;
        }
        .embed-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            margin: 30px auto;
            display: block;
            box-shadow: 0 6px 16px rgba(0,0,0,0.1);
        }
        .feature-list {
            list-style: none;
            margin: 20px 0;
        }
        .feature-list li {
            padding: 10px 0 10px 35px;
            position: relative;
        }
        .feature-list li:before {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--secondary);
            position: absolute;
            left: 0;
            top: 10px;
        }
        .sidebar {
            background: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .sidebar-widget {
            margin-bottom: 30px;
        }
        .sidebar h3 {
            font-size: 1.3rem;
            margin-top: 0;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary);
        }
        .search-form {
            display: flex;
            margin-top: 15px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 15px;
            border: 1px solid #ced4da;
            border-radius: 8px 0 0 8px;
            outline: none;
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #ff3366;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 2rem;
            color: #ffd43b;
            margin: 15px 0;
            cursor: pointer;
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .related-links a {
            display: block;
            padding: 12px 15px;
            margin-bottom: 10px;
            background: #f8f9fa;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
        }
        .related-links a:hover {
            background: #e9ecef;
            transform: translateX(5px);
        }
        .comment-section {
            background: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: var(--shadow);
            margin-top: 40px;
        }
        .comment-form label {
            display: block;
            margin: 15px 0 5px;
            font-weight: 600;
        }
        .comment-form input,
        .comment-form textarea {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ced4da;
            border-radius: 8px;
            font-size: 1rem;
        }
        .comment-form textarea {
            min-height: 150px;
            resize: vertical;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        @media (max-width: 768px) {
            .form-row {
                grid-template-columns: 1fr;
            }
        }
        .submit-btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            margin-top: 20px;
            transition: var(--transition);
            display: block;
            width: 100%;
        }
        .submit-btn:hover {
            background: #ff3366;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(255, 77, 128, 0.3);
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        @media (max-width: 992px) {
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 576px) {
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 900;
            margin-bottom: 15px;
            color: white;
        }
        .footer-links h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #adb5bd;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 20px;
            border-radius: 8px;
            margin: 10px 0;
            border-left: 4px solid var(--secondary);
        }
        friend-link a {
            color: white;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #495057;
            color: #adb5bd;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 80px;
                right: -100%;
                flex-direction: column;
                background: white;
                width: 80%;
                max-width: 300px;
                height: calc(100vh - 80px);
                padding: 40px 30px;
                box-shadow: -5px 0 15px rgba(0,0,0,0.1);
                transition: 0.5s;
            }
            .nav-links.active {
                right: 0;
            }
            .nav-links li {
                margin: 0 0 25px 0;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .article-content,
            .comment-section,
            .sidebar {
                padding: 25px;
            }
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 3px;
        }
        .bold {
            font-weight: 800;
            color: var(--dark);
        }
        .keyword {
            background-color: #fff3bf;
            padding: 2px 6px;
            border-radius: 4px;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .text-center {
            text-align: center;
        }
        .mt-4 { margin-top: 2rem; }
        .mb-4 { margin-bottom: 2rem; }
        .py-3 { padding-top: 1rem; padding-bottom: 1rem; }