*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a5276;
            --secondary: #27ae60;
            --accent: #f39c12;
            --dark: #2c3e50;
            --light: #f8f9fa;
            --white: #ffffff;
            --gray: #6c757d;
            --border: #e9ecef;
            --shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            line-height: 1.8;
            color: var(--dark);
            background: var(--light);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .header {
            background: var(--white);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 15px 0;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
        }
        .my-logo i {
            color: var(--secondary);
            font-size: 1.8rem;
        }
        .my-logo:hover {
            color: var(--primary);
            transform: scale(1.02);
        }
        .nav-toggle {
            display: none;
        }
        .nav-toggle-label {
            display: none;
            cursor: pointer;
            font-size: 1.5rem;
            color: var(--primary);
            padding: 5px;
        }
        .nav-menu {
            display: flex;
            gap: 5px;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-menu li a {
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--dark);
            display: block;
        }
        .nav-menu li a:hover {
            background: var(--light);
            color: var(--primary);
        }
        .nav-menu li a.active {
            background: var(--primary);
            color: var(--white);
        }
        .breadcrumb-wrap {
            background: var(--light);
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 6px;
            font-size: 0.85rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 6px;
            color: var(--gray);
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .here {
            color: var(--primary);
            font-weight: 600;
        }
        .search-bar {
            display: flex;
            align-items: center;
            max-width: 350px;
            margin: 0 15px;
            background: var(--light);
            border-radius: 30px;
            border: 1px solid var(--border);
            overflow: hidden;
        }
        .search-bar input {
            flex: 1;
            border: none;
            padding: 8px 15px;
            background: transparent;
            font-size: 0.85rem;
            outline: none;
        }
        .search-bar button {
            background: var(--primary);
            color: var(--white);
            border: none;
            padding: 8px 14px;
            cursor: pointer;
            font-size: 0.85rem;
        }
        .hero {
            background: linear-gradient(135deg, var(--primary) 0%, #2e86c1 100%);
            color: var(--white);
            padding: 60px 0 50px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }
        .hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 15px;
            line-height: 1.3;
            letter-spacing: -1px;
        }
        .hero p {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 700px;
            margin: 0 auto;
        }
        .content-wrap {
            padding: 40px 0;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        .article {
            background: var(--white);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .article h2 {
            font-size: 1.7rem;
            color: var(--primary);
            margin: 40px 0 15px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--secondary);
            line-height: 1.4;
        }
        .article h2:first-of-type {
            margin-top: 0;
        }
        .article h3 {
            font-size: 1.25rem;
            color: var(--dark);
            margin: 25px 0 12px;
            font-weight: 600;
        }
        .article h4 {
            font-size: 1.05rem;
            color: var(--primary);
            margin: 18px 0 10px;
        }
        .article p {
            margin-bottom: 15px;
            text-align: justify;
        }
        .article ul {
            margin: 10px 0 20px 20px;
        }
        .article li {
            margin-bottom: 8px;
            line-height: 1.7;
        }
        .article img {
            border-radius: var(--radius);
            margin: 25px 0;
            box-shadow: var(--shadow);
        }
        .article figure {
            margin: 25px 0;
        }
        .article figcaption {
            text-align: center;
            font-size: 0.85rem;
            color: var(--gray);
            margin-top: 8px;
            font-style: italic;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        .widget {
            background: var(--white);
            border-radius: var(--radius);
            padding: 25px;
            box-shadow: var(--shadow);
        }
        .widget h3 {
            font-size: 1.1rem;
            color: var(--primary);
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light);
        }
        .widget-list {
            list-style: none;
        }
        .widget-list li {
            margin-bottom: 8px;
            padding-left: 15px;
            position: relative;
            font-size: 0.9rem;
        }
        .widget-list li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: var(--secondary);
        }
        .table-responsive {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }
        th,
        td {
            padding: 12px 15px;
            border: 1px solid var(--border);
            text-align: left;
        }
        th {
            background: var(--light);
            font-weight: 600;
            color: var(--primary);
        }
        tr:nth-child(even) {
            background: #f8f9fa;
        }
        .form-section {
            background: var(--white);
            border-radius: var(--radius);
            padding: 30px;
            margin: 30px 0;
            box-shadow: var(--shadow);
        }
        .form-section h2 {
            color: var(--primary);
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 15px;
        }
        .form-group label {
            display: block;
            margin-bottom: 6px;
            font-weight: 600;
            font-size: 0.9rem;
        }
        .form-group input[type="text"],
        .form-group input[type="email"],
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            font-size: 0.9rem;
            background: var(--light);
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--secondary);
            background: var(--white);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }
        .btn {
            display: inline-block;
            padding: 10px 25px;
            background: var(--primary);
            color: var(--white);
            border: none;
            border-radius: 25px;
            cursor: pointer;
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .btn:hover {
            background: var(--secondary);
            transform: translateY(-2px);
        }
        .rating {
            display: flex;
            gap: 8px;
            margin: 10px 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 1.5rem;
            color: var(--border);
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating label:hover,
        .rating input:checked~label {
            color: var(--accent);
        }
        .footer {
            background: var(--dark);
            color: #bdc3c7;
            padding: 40px 0 0;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            padding-bottom: 30px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer h4 {
            color: var(--white);
            margin-bottom: 15px;
        }
        .footer ul {
            list-style: none;
        }
        .footer ul li {
            margin-bottom: 8px;
        }
        .footer ul li a {
            color: #bdc3c7;
            font-size: 0.9rem;
        }
        .footer ul li a:hover {
            color: var(--secondary);
        }
        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.85rem;
            background: rgba(0, 0, 0, 0.2);
        }
        friend-link {
            display: block;
            margin: 15px 0;
            padding: 10px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 5px;
            font-size: 0.85rem;
        }
        friend-link a {
            color: #bdc3c7;
            margin: 0 5px;
        }
        friend-link a:hover {
            color: var(--secondary);
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: 2;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle-label {
                display: block;
                order: 3;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 10px 0;
                order: 4;
            }
            .nav-toggle:checked~.nav-menu {
                display: flex;
            }
            .nav-toggle:checked~.nav-toggle-label {
                color: var(--secondary);
            }
            .search-bar {
                order: 5;
                margin: 10px 0;
                max-width: 100%;
                width: 100%;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .article {
                padding: 20px;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }
        @media (max-width: 480px) {
            .hero {
                padding: 40px 0;
            }
            .hero h1 {
                font-size: 1.3rem;
            }
            .hero p {
                font-size: 0.9rem;
            }
        }
        .review-item {
            border-bottom: 1px solid var(--border);
            padding: 15px 0;
        }
        .review-item:last-child {
            border: none;
        }
        .review-stars {
            color: var(--accent);
            font-size: 0.9rem;
        }
        .review-meta {
            font-size: 0.8rem;
            color: var(--gray);
            margin-top: 5px;
        }
        .callout {
            background: #fef9e7;
            border-left: 4px solid var(--accent);
            padding: 15px 20px;
            margin: 20px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .callout p {
            margin: 0;
        }
        .tips-list {
            counter-reset: tips;
            list-style: none;
            margin-left: 0 !important;
            padding: 0;
        }
        .tips-list li {
            counter-increment: tips;
            margin-bottom: 12px;
            padding-left: 40px;
            position: relative;
        }
        .tips-list li::before {
            content: counter(tips);
            position: absolute;
            left: 0;
            top: 0;
            width: 28px;
            height: 28px;
            background: var(--secondary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            font-weight: 700;
        }
        .to-top {
            position: fixed;
            bottom: 20px;
            right: 20px;
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--primary);
            color: white;
            border: none;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--shadow);
            transition: var(--transition);
            z-index: 99;
        }
        .to-top:hover {
            background: var(--secondary);
            transform: translateY(-3px);
        }