*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a237e;
            --primary-light: #3949ab;
            --accent: #e67e22;
            --accent-light: #f39c12;
            --bg: #f5f7fa;
            --text: #2c3e50;
            --white: #ffffff;
            --gray: #7f8c8d;
            --border: #e0e0e0;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(26, 35, 126, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 15px 20px;
            gap: 10px;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            color: var(--white);
            letter-spacing: 2px;
            text-transform: uppercase;
            text-decoration: none;
            font-family: 'Georgia', serif;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo:hover {
            color: var(--accent-light);
        }
        .my-logo i {
            color: var(--accent-light);
            font-size: 1.8rem;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 2px solid var(--white);
            border-radius: 8px;
            padding: 8px 12px;
            font-size: 1.4rem;
            color: var(--white);
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .main-nav a {
            color: var(--white);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 12px;
            border-radius: 6px;
            transition: var(--transition);
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: var(--accent-light);
        }
        .nav-search {
            display: flex;
            align-items: center;
            gap: 5px;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 30px;
            padding: 6px 16px;
        }
        .nav-search input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--white);
            font-size: 0.9rem;
            width: 160px;
        }
        .nav-search input::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }
        .nav-search button {
            background: transparent;
            border: none;
            color: var(--white);
            cursor: pointer;
            font-size: 1rem;
        }
        .breadcrumb {
            padding: 12px 20px;
            background: var(--white);
            border-bottom: 1px solid var(--border);
            font-size: 0.85rem;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb span {
            color: var(--text);
            font-weight: 600;
        }
        .breadcrumb i {
            margin: 0 8px;
            font-size: 0.7rem;
            color: var(--gray);
        }
        .hero {
            background: linear-gradient(135deg, #1a237e 0%, #283593 50%, #e67e22 100%);
            padding: 60px 20px;
            text-align: center;
            color: var(--white);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -30%;
            width: 200%;
            height: 200%;
            background: repeating-linear-gradient(45deg, transparent, transparent 30px, rgba(255, 255, 255, 0.03) 30px, rgba(255, 255, 255, 0.03) 60px);
            animation: bgMove 20s linear infinite;
        }
        @keyframes bgMove {
            0% {
                transform: translateY(0);
            }
            100% {
                transform: translateY(-60px);
            }
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            margin-bottom: 15px;
            text-shadow: 2px 4px 15px rgba(0, 0, 0, 0.3);
            position: relative;
            z-index: 1;
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 25px;
            position: relative;
            z-index: 1;
            opacity: 0.95;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 30px;
            padding: 8px 24px;
            font-size: 0.9rem;
            font-weight: 700;
            backdrop-filter: blur(4px);
            position: relative;
            z-index: 1;
            margin-bottom: 20px;
        }
        .main-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 30px;
            padding: 40px 20px;
            max-width: 1280px;
            margin: 0 auto;
        }
        .content-area {
            background: var(--white);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        .sidebar-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 25px;
            box-shadow: var(--shadow);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 15px;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 8px;
            color: var(--primary);
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card ul li {
            margin-bottom: 10px;
        }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            padding: 6px 0;
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }
        .sidebar-card ul li a:hover {
            padding-left: 8px;
            color: var(--accent);
            border-bottom-color: var(--accent);
        }
        .sidebar-card ul li i {
            color: var(--accent);
            font-size: 0.8rem;
        }
        .article-body h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent);
            display: inline-block;
        }
        .article-body h3 {
            font-size: 1.4rem;
            color: var(--primary-light);
            margin: 30px 0 15px;
        }
        .article-body h4 {
            font-size: 1.1rem;
            color: var(--text);
            margin: 20px 0 10px;
            font-weight: 700;
        }
        .article-body p {
            margin-bottom: 16px;
            text-align: justify;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 20px 20px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: #fef9f0;
            padding: 15px 20px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
            font-style: italic;
            color: #555;
        }
        .article-image {
            border-radius: var(--radius);
            overflow: hidden;
            margin: 25px 0;
            box-shadow: var(--shadow);
        }
        .article-image img {
            width: 100%;
            object-fit: cover;
        }
        .article-image figcaption {
            padding: 10px 15px;
            background: var(--bg);
            font-size: 0.85rem;
            color: var(--gray);
            text-align: center;
        }
        .highlight-box {
            background: linear-gradient(135deg, #fef9f0, #fdf3e7);
            border: 1px solid #f5d9b0;
            border-radius: 10px;
            padding: 20px;
            margin: 25px 0;
        }
        .highlight-box h4 {
            color: var(--accent);
            margin-bottom: 10px;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
            margin: 25px 0;
        }
        .stat-card {
            background: var(--bg);
            border-radius: 10px;
            padding: 20px;
            text-align: center;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
        }
        .stat-card .number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
        }
        .stat-card .label {
            font-size: 0.85rem;
            color: var(--gray);
            margin-top: 5px;
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 25px;
            margin-top: 30px;
        }
        .form-card {
            background: var(--bg);
            border-radius: 10px;
            padding: 25px;
            border: 1px solid var(--border);
        }
        .form-card h3 {
            font-size: 1.2rem;
            margin-bottom: 15px;
            color: var(--primary);
        }
        .form-card form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .form-card input,
        .form-card textarea,
        .form-card select {
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: var(--transition);
        }
        .form-card input:focus,
        .form-card textarea:focus,
        .form-card select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.08);
        }
        .form-card textarea {
            resize: vertical;
            min-height: 80px;
        }
        .form-card button {
            background: var(--primary);
            color: var(--white);
            border: none;
            padding: 12px 20px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .form-card button:hover {
            background: var(--accent);
            transform: translateY(-2px);
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .rating-stars i {
            color: #ddd;
            transition: var(--transition);
        }
        .rating-stars i.active {
            color: #f39c12;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
            color: #f39c12;
        }
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.85);
            padding: 40px 20px 30px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            max-width: 1280px;
            margin: 0 auto;
        }
        .footer-grid h4 {
            color: var(--white);
            margin-bottom: 15px;
            font-size: 1.1rem;
        }
        .footer-grid a {
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-grid a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.2);
            margin-top: 30px;
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
        }
        friend-link {
            display: block;
            margin-top: 15px;
            font-size: 0.9rem;
            line-height: 2;
        }
        friend-link a {
            color: var(--accent-light);
        }
        @media (max-width: 992px) {
            .main-wrapper {
                grid-template-columns: 1fr;
            }
            .sidebar {
                flex-direction: row;
                flex-wrap: wrap;
            }
            .sidebar-card {
                flex: 1 1 250px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding-top: 10px;
                gap: 8px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                padding: 10px 12px;
                border-radius: 8px;
            }
            .nav-search {
                width: 100%;
                padding: 10px;
            }
            .nav-search input {
                flex: 1;
                width: auto;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .content-area {
                padding: 20px;
            }
            .interaction-grid {
                grid-template-columns: 1fr;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .stat-card .number {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 480px) {
            .container,
            .main-wrapper {
                padding: 15px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .hero {
                padding: 40px 15px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }
        @media print {
            .site-header,
            .site-footer,
            .sidebar,
            .interaction-grid,
            .breadcrumb {
                display: none;
            }
            .content-area {
                box-shadow: none;
                padding: 0;
            }
        }