:root {
            --primary-blue: #1a4f8c;
            --secondary-red: #c93c3c;
            --accent-gold: #e8b754;
            --light-bg: #f8f9fa;
            --dark-text: #2c3e50;
            --medium-gray: #6c757d;
            --border-color: #dee2e6;
            --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition-speed: 0.3s;
        }
        * {
            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(--dark-text);
            background-color: #fff;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary-blue) 0%, #0d3a6e 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Georgia', serif;
            font-size: 2.2rem;
            font-weight: bold;
            color: var(--accent-gold);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: color var(--transition-speed);
        }
        .my-logo:hover {
            color: white;
            text-shadow: 0 0 5px rgba(232, 183, 84, 0.7);
        }
        .my-logo i {
            font-size: 1.8rem;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 0;
            position: relative;
            transition: color var(--transition-speed);
        }
        .main-nav a:hover {
            color: var(--accent-gold);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-gold);
            transition: width var(--transition-speed);
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: 1rem 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary-blue);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb span {
            color: var(--medium-gray);
            margin: 0 8px;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            border-left: 2px solid var(--border-color);
            padding-left: 25px;
        }
        article {
            margin-bottom: 3rem;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid var(--accent-gold);
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-blue);
            margin: 2.5rem 0 1.2rem;
            padding-top: 10px;
        }
        h3 {
            font-size: 1.5rem;
            color: #3a506b;
            margin: 2rem 0 1rem;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--medium-gray);
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.2rem;
            background-color: var(--light-bg);
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid var(--primary-blue);
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #fff8e1;
            padding: 1.5rem;
            border-radius: 8px;
            border: 1px dashed var(--accent-gold);
            margin: 2rem 0;
        }
        .strategy-box {
            background-color: #e8f4fd;
            border: 1px solid #b6d4fe;
            border-radius: 8px;
            padding: 1.5rem;
            margin: 1.8rem 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 2rem auto;
            border-radius: 10px;
            box-shadow: var(--card-shadow);
            transition: transform var(--transition-speed);
        }
        img:hover {
            transform: scale(1.01);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--medium-gray);
            margin-top: -1.5rem;
            margin-bottom: 2rem;
            font-size: 0.95rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        a.content-link {
            color: var(--primary-blue);
            text-decoration: none;
            font-weight: 500;
            border-bottom: 1px dotted var(--primary-blue);
            transition: all var(--transition-speed);
        }
        a.content-link:hover {
            color: var(--secondary-red);
            border-bottom-style: solid;
            background-color: #f0f7ff;
        }
        strong {
            color: var(--primary-blue);
            font-weight: 700;
        }
        em {
            color: #5a6268;
        }
        blockquote {
            border-left: 4px solid var(--accent-gold);
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #495057;
            background-color: var(--light-bg);
            padding: 1.5rem;
            border-radius: 0 8px 8px 0;
        }
        hr {
            border: none;
            height: 1px;
            background: linear-gradient(to right, transparent, var(--border-color), transparent);
            margin: 3rem 0;
        }
        .user-interaction {
            background-color: var(--light-bg);
            padding: 2.5rem;
            border-radius: 12px;
            margin: 3rem 0;
            border: 1px solid var(--border-color);
        }
        .interaction-title {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--primary-blue);
            margin-bottom: 1.5rem;
        }
        .interaction-title i {
            color: var(--accent-gold);
        }
        .search-box, .comment-form, .rating-form {
            margin-bottom: 2.5rem;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark-text);
        }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border-color var(--transition-speed);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 3px rgba(26, 79, 140, 0.1);
        }
        button {
            background-color: var(--primary-blue);
            color: white;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color var(--transition-speed), transform 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        button:hover {
            background-color: #153a6b;
            transform: translateY(-2px);
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            margin-bottom: 1rem;
            flex-direction: row-reverse;
            justify-content: flex-end;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            padding: 0 2px;
            transition: color var(--transition-speed);
            margin: 0;
        }
        .rating-stars input:checked ~ label,
        .rating-stars label:hover,
        .rating-stars label:hover ~ label {
            color: var(--accent-gold);
        }
        .last-updated {
            font-size: 0.9rem;
            color: var(--medium-gray);
            text-align: right;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid var(--border-color);
        }
        .last-updated i {
            margin-right: 5px;
        }
        .sidebar-section {
            margin-bottom: 2.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-title {
            font-size: 1.3rem;
            color: var(--primary-blue);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-gold);
        }
        .related-links ul {
            list-style: none;
            margin-left: 0;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-left: 0;
        }
        .related-links a {
            color: var(--dark-text);
            text-decoration: none;
            display: block;
            padding: 0.7rem;
            border-radius: 6px;
            transition: all var(--transition-speed);
            border-left: 3px solid transparent;
        }
        .related-links a:hover {
            background-color: #f0f7ff;
            border-left-color: var(--primary-blue);
            padding-left: 1rem;
            color: var(--primary-blue);
        }
        .quick-nav ul {
            list-style: none;
            margin-left: 0;
        }
        .quick-nav a {
            color: var(--medium-gray);
            text-decoration: none;
            display: block;
            padding: 0.5rem 0;
            transition: color var(--transition-speed);
        }
        .quick-nav a:hover {
            color: var(--primary-blue);
        }
        .site-footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: var(--accent-gold);
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
        }
        .footer-links ul {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color var(--transition-speed);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1.2rem;
            border-radius: 6px;
            margin: 1rem 0;
        }
        friend-link a {
            color: var(--accent-gold);
            text-decoration: none;
            font-weight: 500;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: #95a5a6;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .sidebar {
                border-left: none;
                border-top: 2px solid var(--border-color);
                padding-left: 0;
                padding-top: 30px;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                width: 100%;
                order: 3;
                margin-top: 1rem;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav li {
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            .main-nav a {
                display: block;
                padding: 0.8rem 0;
            }
            .hamburger {
                display: block;
            }
            .user-interaction {
                padding: 1.8rem;
            }
            .footer-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            h1 {
                font-size: 2rem;
            }
            .intro {
                padding: 1.2rem;
                font-size: 1.1rem;
            }
            button {
                width: 100%;
                justify-content: center;
            }
        }