:root {
            --primary: #1a365d;
            --secondary: #e53e3e;
            --accent: #f6ad55;
            --light: #f7fafc;
            --dark: #2d3748;
            --gray: #718096;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            line-height: 1.8;
            color: var(--dark);
            background-color: #fff;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 95%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        .btn {
            display: inline-block;
            background: var(--secondary);
            color: white;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            background: var(--primary);
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        header {
            background: var(--primary);
            color: white;
            padding: 1.2rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
        }
        .my-logo i {
            margin-right: 10px;
            font-size: 2.2rem;
        }
        .my-logo:hover {
            color: white;
            text-shadow: 0 0 5px var(--accent);
        }
        .desktop-nav ul {
            display: flex;
            gap: 2rem;
        }
        .desktop-nav a {
            font-weight: 600;
            padding: 5px 10px;
            border-radius: 5px;
        }
        .desktop-nav a:hover {
            background: rgba(255,255,255,0.1);
            color: var(--accent);
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--accent);
        }
        .mobile-nav {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background: var(--primary);
            padding: 1rem;
            transform: translateY(-100%);
            opacity: 0;
            transition: var(--transition);
            z-index: 999;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            transform: translateY(0);
            opacity: 1;
        }
        .mobile-nav ul {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .mobile-nav a {
            display: block;
            padding: 12px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-weight: 600;
        }
        .mobile-nav a:hover {
            color: var(--accent);
            padding-left: 20px;
        }
        .breadcrumb {
            background: var(--light);
            padding: 1rem 0;
            border-bottom: 1px solid #e2e8f0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: ">";
            margin-left: 0.5rem;
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--secondary);
            text-decoration: underline;
        }
        .search-section {
            background: linear-gradient(135deg, var(--primary), #2d4a7c);
            color: white;
            padding: 3rem 1rem;
            text-align: center;
            border-radius: 15px;
            margin: 2rem auto;
        }
        .search-box {
            max-width: 600px;
            margin: 1.5rem auto;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-box input {
            flex: 1;
            padding: 18px 25px;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-box button {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 0 30px;
            cursor: pointer;
            font-size: 1.2rem;
        }
        .search-box button:hover {
            background: #c53030;
        }
        main {
            padding: 2rem 0;
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 1.5rem;
            line-height: 1.3;
            border-left: 6px solid var(--secondary);
            padding-left: 1.5rem;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--primary);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--accent);
        }
        h3 {
            font-size: 1.7rem;
            color: var(--dark);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--secondary);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .intro {
            font-size: 1.2rem;
            color: var(--gray);
            font-weight: 500;
            background: var(--light);
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 2rem;
        }
        .highlight {
            background: linear-gradient(120deg, #f6ad55aa 0%, #f6ad55aa 100%);
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
            border-left: 5px solid var(--secondary);
        }
        .img-container {
            margin: 2.5rem auto;
            text-align: center;
            max-width: 800px;
        }
        .img-container img {
            border-radius: 15px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .img-container img:hover {
            transform: scale(1.02);
        }
        .img-caption {
            font-style: italic;
            color: var(--gray);
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .content-link {
            color: var(--secondary);
            font-weight: 600;
            border-bottom: 1px dotted var(--secondary);
        }
        .content-link:hover {
            color: var(--primary);
            border-bottom: 2px solid var(--primary);
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .stat {
            background: var(--light);
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
            border-top: 5px solid var(--primary);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--secondary);
            display: block;
            line-height: 1;
        }
        .stat-desc {
            font-size: 1rem;
            color: var(--dark);
            margin-top: 0.5rem;
        }
        .quote {
            font-size: 1.3rem;
            font-style: italic;
            color: var(--primary);
            padding: 2rem;
            background: #f7fafc;
            border-radius: 10px;
            margin: 2.5rem 0;
            position: relative;
            border-left: 5px solid var(--accent);
        }
        .quote::before {
            content: "\f10d";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            color: var(--accent);
            font-size: 2rem;
            position: absolute;
            top: -15px;
            left: 20px;
            background: white;
            padding: 0 10px;
        }
        .tip {
            background: #e6fffa;
            border-left: 5px solid #38b2ac;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 10px 10px 0;
        }
        .interaction {
            background: var(--light);
            padding: 2.5rem;
            border-radius: 15px;
            margin-top: 3rem;
        }
        .rating-form, .comment-form {
            margin-bottom: 2.5rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #e2e8f0;
            cursor: pointer;
        }
        .stars .active {
            color: #f6ad55;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 15px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--secondary);
        }
        .form-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        footer {
            background: var(--primary);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-section h3 {
            color: var(--accent);
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid rgba(255,255,255,0.1);
            padding-bottom: 0.5rem;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1.5rem;
            border-radius: 10px;
            margin-top: 1rem;
            border-left: 4px solid var(--accent);
        }
        friend-link a {
            font-weight: 600;
        }
        friend-link a:hover {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #cbd5e0;
        }
        .update-time {
            text-align: right;
            font-size: 0.9rem;
            color: var(--gray);
            margin-top: 2rem;
            font-style: italic;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.3rem; }
            h2 { font-size: 1.9rem; }
            article { padding: 2rem; }
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            .header-container { padding: 0 1rem; }
            h1 { font-size: 2rem; padding-left: 1rem; }
            h2 { font-size: 1.7rem; }
            article { padding: 1.5rem; }
            .search-box { flex-direction: column; border-radius: 10px; }
            .search-box input, .search-box button { width: 100%; border-radius: 0; padding: 15px; }
            .footer-content { grid-template-columns: 1fr; }
        }