:root {
            --primary-dark: #1a1a1a;
            --secondary-dark: #2d2d2d;
            --accent-rust: #c74b1a;
            --accent-rust-light: #e67e22;
            --text-primary: #f0f0f0;
            --text-secondary: #b0b0b0;
            --border-color: #444;
            --card-bg: #252525;
            --success-color: #2ecc71;
            --warning-color: #f39c12;
            --transition-speed: 0.3s;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--primary-dark);
            overflow-x: hidden;
        }
        a {
            color: var(--accent-rust-light);
            text-decoration: none;
            transition: color var(--transition-speed);
        }
        a:hover {
            color: var(--accent-rust);
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--secondary-dark);
            border-bottom: 2px solid var(--accent-rust);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-transform: uppercase;
            background: linear-gradient(45deg, var(--accent-rust), var(--accent-rust-light));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: 1px;
            transition: transform var(--transition-speed);
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .breadcrumb {
            background-color: var(--card-bg);
            padding: 12px 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb a {
            margin: 0 5px;
        }
        .breadcrumb span {
            margin: 0 5px;
            color: var(--accent-rust-light);
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 25px;
        }
        nav ul li a {
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 12px;
            border-radius: 4px;
            position: relative;
        }
        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background-color: var(--accent-rust);
            transition: all var(--transition-speed);
            transform: translateX(-50%);
        }
        nav ul li a:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--accent-rust-light);
        }
        .search-container {
            margin: 30px auto;
            max-width: 700px;
            position: relative;
        }
        .search-form {
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            border: 2px solid var(--border-color);
            transition: border-color var(--transition-speed);
        }
        .search-form:focus-within {
            border-color: var(--accent-rust);
        }
        .search-input {
            flex-grow: 1;
            padding: 18px 25px;
            border: none;
            background-color: var(--card-bg);
            color: var(--text-primary);
            font-size: 1.1rem;
        }
        .search-input:focus {
            outline: none;
        }
        .search-button {
            background-color: var(--accent-rust);
            color: white;
            border: none;
            padding: 0 30px;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background-color var(--transition-speed);
        }
        .search-button:hover {
            background-color: var(--accent-rust-light);
        }
        main {
            padding: 30px 0 60px;
        }
        article {
            background-color: var(--card-bg);
            border-radius: 10px;
            padding: 40px;
            margin-bottom: 40px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
            border: 1px solid var(--border-color);
        }
        h1 {
            font-size: 2.8rem;
            margin-bottom: 25px;
            color: var(--accent-rust-light);
            line-height: 1.2;
            text-align: center;
            border-bottom: 3px solid var(--accent-rust);
            padding-bottom: 20px;
        }
        h2 {
            font-size: 2.2rem;
            margin: 45px 0 20px;
            color: var(--text-primary);
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }
        h3 {
            font-size: 1.8rem;
            margin: 35px 0 15px;
            color: var(--accent-rust-light);
        }
        h4 {
            font-size: 1.5rem;
            margin: 30px 0 12px;
            color: var(--text-secondary);
        }
        p {
            margin-bottom: 22px;
            font-size: 1.15rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            color: var(--text-secondary);
            font-style: italic;
            text-align: center;
            margin-bottom: 35px;
            padding: 20px;
            background-color: rgba(199, 75, 26, 0.1);
            border-radius: 8px;
            border-left: 5px solid var(--accent-rust);
        }
        .highlight {
            background-color: rgba(199, 75, 26, 0.15);
            padding: 25px;
            border-radius: 8px;
            margin: 30px 0;
            border-left: 5px solid var(--accent-rust);
        }
        .highlight p:last-child {
            margin-bottom: 0;
        }
        .important {
            font-weight: bold;
            color: var(--accent-rust-light);
        }
        .quote {
            font-size: 1.3rem;
            padding: 25px 35px;
            margin: 35px 0;
            background-color: rgba(45, 45, 45, 0.8);
            border-radius: 8px;
            border-left: 8px solid var(--accent-rust);
            font-style: italic;
            position: relative;
        }
        .quote::before {
            content: '"';
            font-size: 5rem;
            color: var(--accent-rust);
            opacity: 0.3;
            position: absolute;
            top: -20px;
            left: 10px;
        }
        .image-container {
            margin: 40px auto;
            text-align: center;
            max-width: 900px;
        }
        .article-image {
            width: 100%;
            height: auto;
            border-radius: 10px;
            border: 3px solid var(--border-color);
            transition: transform var(--transition-speed), box-shadow var(--transition-speed);
        }
        .article-image:hover {
            transform: scale(1.01);
            box-shadow: 0 10px 30px rgba(199, 75, 26, 0.3);
        }
        .image-caption {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-top: 10px;
            font-style: italic;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 25px;
        }
        li {
            margin-bottom: 10px;
            font-size: 1.1rem;
        }
        .link-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 20px;
            margin: 40px 0;
        }
        .link-card {
            background-color: var(--secondary-dark);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            transition: transform var(--transition-speed), border-color var(--transition-speed);
        }
        .link-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent-rust);
        }
        .link-card h4 {
            margin-top: 0;
            color: var(--accent-rust-light);
        }
        .user-interaction {
            margin-top: 60px;
            padding-top: 40px;
            border-top: 2px solid var(--border-color);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }
        .interaction-form {
            background-color: var(--secondary-dark);
            padding: 30px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
        }
        .interaction-form h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interaction-form h3 i {
            color: var(--accent-rust);
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        input, textarea, select {
            width: 100%;
            padding: 14px;
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            color: var(--text-primary);
            font-size: 1rem;
            transition: border-color var(--transition-speed);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--accent-rust);
        }
        textarea {
            min-height: 120px;
            resize: vertical;
        }
        .rating {
            display: flex;
            gap: 10px;
            margin: 15px 0;
            flex-wrap: wrap;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 2rem;
            color: var(--border-color);
            cursor: pointer;
            transition: color var(--transition-speed);
            margin: 0;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: var(--warning-color);
        }
        .rating input:checked + label {
            color: var(--warning-color);
        }
        .submit-button {
            background-color: var(--accent-rust);
            color: white;
            border: none;
            padding: 16px 30px;
            border-radius: 6px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: background-color var(--transition-speed);
            width: 100%;
        }
        .submit-button:hover {
            background-color: var(--accent-rust-light);
        }
        .update-time {
            text-align: center;
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }
        footer {
            background-color: var(--secondary-dark);
            border-top: 2px solid var(--accent-rust);
            padding: 50px 0 30px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--accent-rust-light);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .friend-links {
            background-color: var(--card-bg);
            padding: 25px;
            border-radius: 8px;
            margin: 30px 0;
        }
        .friend-links h3 {
            margin-top: 0;
        }
        .friend-link-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 15px;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .link-list { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .header-container { flex-direction: column; align-items: flex-start; }
            .my-logo { margin-bottom: 15px; }
            nav ul { display: none; flex-direction: column; width: 100%; margin-top: 20px; }
            nav ul li { margin: 10px 0; }
            nav ul.show { display: flex; }
            .hamburger { display: block; position: absolute; top: 25px; right: 20px; }
            .link-list { grid-template-columns: 1fr; }
            .interaction-grid { grid-template-columns: 1fr; }
            article { padding: 25px; }
            .footer-content { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.7rem; }
            .search-input { padding: 14px 20px; }
            .search-button { padding: 0 20px; }
            .interaction-form { padding: 20px; }
        }