:root {
            --primary-blue: #0a67a1;
            --secondary-blue: #4ba3d1;
            --accent-gold: #f9c74f;
            --accent-orange: #f9844a;
            --dark-bg: #0d2b3e;
            --light-bg: #f0f8ff;
            --text-dark: #1e3a5f;
            --text-light: #5a7d9a;
            --border-color: #c5e1f0;
            --shadow: 0 5px 15px rgba(10, 103, 161, 0.1);
            --transition: all 0.3s ease;
            --radius: 12px;
        }
        * {
            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: 1.7;
            color: var(--text-dark);
            background: linear-gradient(135deg, var(--light-bg) 0%, #ffffff 100%);
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(90deg, var(--dark-bg) 0%, var(--primary-blue) 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 12px;
            letter-spacing: 1px;
            transition: var(--transition);
        }
        .my-logo:hover {
            color: var(--accent-gold);
            transform: scale(1.03);
        }
        .my-logo i {
            color: var(--accent-gold);
        }
        .my-logo span {
            background: linear-gradient(90deg, #4ba3d1, #a5d8ff);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            font-style: italic;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        nav a:hover, nav a.active {
            background: rgba(255, 255, 255, 0.15);
            color: var(--accent-gold);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: var(--dark-bg);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 10px 20px rgba(0,0,0,0.3);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            padding: 1rem;
            text-decoration: none;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .breadcrumb {
            padding: 1rem 0;
            background: #e6f2ff;
            margin-bottom: 2rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.75rem;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .breadcrumb a {
            color: var(--primary-blue);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--accent-orange);
            text-decoration: underline;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            color: var(--text-light);
        }
        main {
            padding: 2rem 0;
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 3rem;
        }
        article {
            background: white;
            border-radius: var(--radius);
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid var(--accent-gold);
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-blue);
            margin: 2.5rem 0 1.5rem;
            padding-left: 1rem;
            border-left: 6px solid var(--accent-orange);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--secondary-blue);
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--text-dark);
            margin: 1.5rem 0 0.75rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--primary-blue);
            font-weight: 600;
            margin: 2rem 0;
            padding: 1.5rem;
            background: #f0f9ff;
            border-left: 5px solid var(--secondary-blue);
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .highlight {
            background: linear-gradient(90deg, #ffecb3, #ffd54f);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 700;
        }
        strong {
            color: var(--primary-blue);
        }
        em {
            color: var(--accent-orange);
            font-style: italic;
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 3px;
        }
        .info-box {
            background: #e8f4fc;
            border: 2px solid var(--secondary-blue);
            border-radius: var(--radius);
            padding: 1.5rem;
            margin: 2rem 0;
            display: flex;
            align-items: flex-start;
            gap: 1rem;
        }
        .info-box i {
            color: var(--primary-blue);
            font-size: 1.8rem;
            flex-shrink: 0;
            margin-top: 5px;
        }
        .code-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .code-card {
            background: linear-gradient(135deg, #f8ffff, #e6f7ff);
            border: 2px dashed var(--secondary-blue);
            border-radius: var(--radius);
            padding: 1.5rem;
            text-align: center;
            transition: var(--transition);
        }
        .code-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 25px rgba(10, 103, 161, 0.2);
            border-style: solid;
        }
        .code {
            font-family: monospace;
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-blue);
            letter-spacing: 2px;
            margin: 1rem 0;
            background: white;
            padding: 0.5rem;
            border-radius: 8px;
            border: 2px solid var(--border-color);
        }
        .reward {
            color: var(--accent-orange);
            font-weight: 700;
            display: block;
            margin-top: 0.5rem;
        }
        .article-img {
            width: 100%;
            height: auto;
            border-radius: var(--radius);
            margin: 2.5rem 0;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
            border: 5px solid white;
            transition: var(--transition);
        }
        .article-img:hover {
            transform: scale(1.01);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: -1.5rem;
            margin-bottom: 2.5rem;
            font-size: 0.95rem;
        }
        .search-box, .comment-form, .rating-form {
            background: white;
            border-radius: var(--radius);
            padding: 2rem;
            margin-bottom: 2.5rem;
            box-shadow: var(--shadow);
        }
        .search-box h3, .comment-form h3, .rating-form h3 {
            margin-top: 0;
        }
        form {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        label {
            font-weight: 600;
            color: var(--primary-blue);
        }
        input, textarea, select {
            padding: 1rem;
            border: 2px solid var(--border-color);
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--secondary-blue);
            box-shadow: 0 0 0 3px rgba(75, 163, 209, 0.2);
        }
        button {
            background: linear-gradient(90deg, var(--primary-blue), var(--secondary-blue));
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        button:hover {
            background: linear-gradient(90deg, #095a8a, #3a93c1);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(10, 103, 161, 0.3);
        }
        .stars {
            display: flex;
            gap: 10px;
            direction: rtl;
            margin: 1rem 0;
        }
        .star {
            font-size: 2.5rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star:hover ~ .star {
            color: var(--accent-gold);
        }
        .star.selected {
            color: var(--accent-gold);
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            border-radius: var(--radius);
            padding: 1.8rem;
            box-shadow: var(--shadow);
        }
        .widget-title {
            font-size: 1.4rem;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 3px solid var(--accent-gold);
        }
        .related-links ul {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #eee;
        }
        .related-links a {
            color: var(--text-dark);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
            padding: 0.5rem;
            border-radius: 6px;
        }
        .related-links a:hover {
            color: var(--primary-blue);
            background: #f0f9ff;
            padding-left: 1rem;
        }
        .related-links i {
            color: var(--secondary-blue);
        }
        .update-time {
            background: #fff9e6;
            border-left: 5px solid var(--accent-gold);
            padding: 1.2rem;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        footer {
            background: var(--dark-bg);
            color: white;
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: var(--accent-gold);
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #b0d4f0;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-links a:hover {
            color: white;
            transform: translateX(5px);
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1.2rem;
            border-radius: var(--radius);
            margin: 1rem 0;
        }
        friend-link a {
            color: var(--accent-gold);
            font-weight: 600;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #8bb8d6;
            font-size: 0.95rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            h1 {
                font-size: 2.4rem;
            }
            .code-list {
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            }
        }
        @media (max-width: 768px) {
            nav ul {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .header-content {
                flex-wrap: wrap;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            article {
                padding: 1.8rem;
            }
            .footer-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            .code-list {
                grid-template-columns: 1fr;
            }
            .code {
                font-size: 1.5rem;
            }
            button {
                width: 100%;
                justify-content: center;
            }
        }
        @media print {
            header, aside, footer, .search-box, .comment-form, .rating-form {
                display: none;
            }
            main {
                display: block;
            }
            article {
                box-shadow: none;
                padding: 0;
            }
        }