*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        :root {
            --primary: #1a5276;
            --primary-dark: #0e3850;
            --accent: #f39c12;
            --accent-light: #f7dc6f;
            --bg: #f8f9fa;
            --text: #2c3e50;
            --text-light: #6c7a89;
            --white: #ffffff;
            --dark-green: #27ae60;
            --border: #e1e8ed;
            --shadow: 0 2px 10px rgba(0,0,0,0.08);
            --radius: 10px;
            --space-unit: 1rem;
        }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        .site-header {
            background: linear-gradient(135deg, #1a5276 0%, #0e3850 60%, #0a2740 100%);
            padding: 0 15px;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 3px 15px rgba(0,0,0,0.2);
        }
        .header-inner {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 15px 0;
            gap: 10px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--white);
            text-decoration: none;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.2;
        }
        .my-logo i {
            color: var(--accent);
            font-size: 2rem;
        }
        .my-logo span {
            font-weight: 300;
            color: var(--accent);
        }
        .header-search {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.15);
            border-radius: 25px;
            padding: 5px 5px 5px 15px;
            border: 1px solid rgba(255,255,255,0.2);
            backdrop-filter: blur(5px);
        }
        .header-search input {
            background: transparent;
            border: none;
            color: var(--white);
            outline: none;
            font-size: 0.9rem;
            width: 180px;
            padding: 5px 0;
        }
        .header-search input::placeholder { color: rgba(255,255,255,0.7); }
        .header-search button {
            background: var(--accent);
            border: none;
            color: var(--primary-dark);
            border-radius: 50%;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 0.8rem;
            transition: all 0.3s;
        }
        .header-search button:hover { background: var(--accent-light); transform: scale(1.05); }
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(255,255,255,0.4);
            color: var(--white);
            font-size: 1.3rem;
            padding: 6px 12px;
            border-radius: 6px;
            cursor: pointer;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 5px;
            align-items: center;
        }
        .main-nav a {
            color: rgba(255,255,255,0.9);
            text-decoration: none;
            font-size: 0.85rem;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 20px;
            transition: all 0.3s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255,255,255,0.15);
            color: var(--accent);
        }
        .main-nav a.active {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 600;
        }
        .breadcrumb-wrap {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            padding: 10px 0;
            font-size: 0.8rem;
        }
        .breadcrumb {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 5px;
        }
        .breadcrumb li { display: flex; align-items: center; }
        .breadcrumb li + li::before {
            content: '›';
            margin: 0 8px;
            color: var(--text-light);
            font-size: 1.1rem;
        }
        .breadcrumb a { color: var(--primary); text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb .current { color: var(--text-light); }
        .page-wrapper {
            max-width: 1280px;
            margin: 0 auto;
            padding: 25px 20px;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 30px;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            min-width: 0;
        }
        .article-card {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin-bottom: 30px;
            overflow: hidden;
        }
        .article-hero {
            position: relative;
            padding: 35px 30px 20px;
            background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
            color: var(--white);
        }
        .article-hero h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 10px;
            text-shadow: 0 2px 5px rgba(0,0,0,0.2);
        }
        .article-hero .subtitle {
            font-size: 1rem;
            opacity: 0.95;
            max-width: 600px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            padding: 15px 30px;
            background: var(--primary-dark);
            color: rgba(255,255,255,0.85);
            font-size: 0.8rem;
        }
        .article-meta i { margin-right: 4px; color: var(--accent); }
        .article-body {
            padding: 30px;
            font-size: 1rem;
            line-height: 1.75;
        }
        .article-body h2 {
            font-size: 1.6rem;
            color: var(--primary);
            margin: 40px 0 15px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--accent);
            font-weight: 700;
        }
        .article-body h3 {
            font-size: 1.2rem;
            color: var(--primary-dark);
            margin: 30px 0 12px;
            font-weight: 600;
        }
        .article-body h4 {
            font-size: 1rem;
            color: var(--text);
            margin: 20px 0 8px;
            font-weight: 600;
            font-style: italic;
        }
        .article-body p {
            margin-bottom: 15px;
            text-align: justify;
        }
        .article-body ul, .article-body ol {
            margin: 0 0 20px 25px;
        }
        .article-body li { margin-bottom: 8px; }
        .article-body img {
            max-width: 100%;
            border-radius: 8px;
            margin: 20px 0;
            box-shadow: 0 3px 15px rgba(0,0,0,0.1);
        }
        .feature-box {
            background: #f0f7f0;
            border-left: 4px solid var(--dark-green);
            padding: 15px 20px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
            font-size: 0.95rem;
        }
        .warning-box {
            background: #fff8e1;
            border-left: 4px solid var(--accent);
            padding: 15px 20px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
            font-size: 0.95rem;
        }
        .stats-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.9rem;
        }
        .stats-table th {
            background: var(--primary);
            color: var(--white);
            padding: 12px 10px;
            text-align: left;
            font-weight: 600;
        }
        .stats-table td {
            padding: 10px;
            border-bottom: 1px solid var(--border);
        }
        .stats-table tr:nth-child(even) { background: #f7f9fa; }
        .stats-table tr:hover { background: var(--accent-light); }
        .highlight-box {
            background: linear-gradient(135deg, #1a5276, #0e3850);
            color: var(--white);
            border-radius: var(--radius);
            padding: 25px;
            margin: 25px 0;
        }
        .highlight-box h3 { color: var(--accent); margin-top: 0; }
        .highlight-box a { color: var(--accent-light); }
        .widget {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 20px;
            margin-bottom: 25px;
        }
        .widget-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .widget-links {
            list-style: none;
        }
        .widget-links li {
            padding: 8px 0;
            border-bottom: 1px dotted var(--border);
            font-size: 0.85rem;
        }
        .widget-links li:last-child { border-bottom: none; }
        .widget-links a { color: var(--text); text-decoration: none; }
        .widget-links a:hover { color: var(--accent); padding-left: 5px; transition: all 0.3s; }
        .rating-form {
            text-align: center;
        }
        .rating-stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 10px 0;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
        }
        .rating-stars i {
            transition: all 0.2s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: var(--accent);
            transform: scale(1.1);
        }
        .rating-btn {
            background: var(--primary);
            color: var(--white);
            border: none;
            padding: 8px 20px;
            border-radius: 20px;
            cursor: pointer;
            font-size: 0.85rem;
            transition: background 0.3s;
        }
        .rating-btn:hover { background: var(--primary-dark); }
        .comment-form textarea {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 10px;
            font-family: inherit;
            font-size: 0.85rem;
            resize: vertical;
            min-height: 80px;
            margin-bottom: 10px;
        }
        .comment-form input {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 10px;
            font-size: 0.85rem;
            margin-bottom: 10px;
        }
        .comment-btn {
            background: var(--accent);
            color: var(--primary-dark);
            border: none;
            padding: 8px 20px;
            border-radius: 20px;
            cursor: pointer;
            font-weight: 600;
            width: 100%;
            transition: background 0.3s;
        }
        .comment-btn:hover { background: var(--accent-light); }
        .search-widget form {
            display: flex;
            gap: 5px;
        }
        .search-widget input {
            flex: 1;
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 8px 15px;
            font-size: 0.85rem;
            outline: none;
        }
        .search-widget input:focus { border-color: var(--accent); }
        .search-widget button {
            background: var(--primary);
            color: var(--white);
            border: none;
            border-radius: 50%;
            width: 35px;
            height: 35px;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-widget button:hover { background: var(--primary-dark); }
        .site-footer {
            background: #0a1f2eb3;
            background: linear-gradient(135deg, #0a2740, #0e3850);
            color: rgba(255,255,255,0.85);
            padding: 40px 20px 0;
            margin-top: 50px;
        }
        .footer-inner {
            max-width: 1280px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            padding-bottom: 30px;
        }
        .footer-bottom {
            background: rgba(0,0,0,0.2);
            padding: 15px;
            text-align: center;
            font-size: 0.8rem;
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        friend-link {
            display: block;
            padding: 20px;
            background: rgba(255,255,255,0.05);
            border-radius: 8px;
            margin-top: 15px;
            font-size: 0.85rem;
            line-height: 1.8;
        }
        friend-link a {
            color: var(--accent);
            text-decoration: none;
            margin: 0 5px;
        }
        friend-link a:hover { text-decoration: underline; }
        .footer-h3 {
            color: var(--accent);
            font-size: 1rem;
            margin-bottom: 12px;
            font-weight: 600;
        }
        .footer-links {
            list-style: none;
            font-size: 0.85rem;
        }
        .footer-links li { margin-bottom: 6px; }
        .footer-links a { color: rgba(255,255,255,0.75); text-decoration: none; }
        .footer-links a:hover { color: var(--accent); }
        @media (max-width: 900px) {
            .page-wrapper {
                grid-template-columns: 1fr;
                padding: 15px;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                gap: 0;
                padding-top: 10px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px;
                border-radius: 0;
                border-bottom: 1px solid rgba(255,255,255,0.1);
                width: 100%;
                text-align: center;
            }
            .nav-toggle {
                display: block;
            }
            .header-search {
                width: 100%;
                margin-top: 5px;
                order: 3;
            }
            .header-search input {
                flex: 1;
                width: auto;
            }
            .article-hero h1 {
                font-size: 1.5rem;
            }
            .article-body {
                padding: 20px;
            }
            .article-meta {
                padding: 10px 15px;
                gap: 8px;
            }
        }
        @media (max-width: 480px) {
            .page-wrapper {
                padding: 10px;
            }
            .article-body p {
                font-size: 0.9rem;
            }
            .article-body h2 {
                font-size: 1.2rem;
            }
            .article-hero {
                padding: 20px 15px;
            }
            .stats-table {
                font-size: 0.75rem;
            }
        }
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .main-content .article-card {
            animation: fadeInUp 0.5s ease-out;
        }
        .widget {
            animation: fadeInUp 0.5s ease-out 0.1s both;
        }
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: #f1f1f1; }
        ::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--primary-dark); }