* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f8fafc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #0f3b5e;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #0284c7;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1a2c 0%, #1a3a5a 100%);
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #facc15;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            color: #38bdf8;
            font-size: 2rem;
        }
        .my-logo span {
            font-size: 0.9rem;
            color: #94a3b8;
            font-weight: 400;
            letter-spacing: 0;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #fbbf24;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 6px;
        }
        .nav-list li a {
            color: #e2e8f0;
            padding: 8px 16px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.9rem;
            transition: all 0.2s;
            white-space: nowrap;
        }
        .nav-list li a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #facc15;
            text-decoration: none;
        }
        .nav-list li a.active {
            background: #facc15;
            color: #0b1a2c;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #f1f5f9;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .mobile-nav {
            display: none;
            width: 100%;
            background: #0f2a40;
            border-radius: 0 0 16px 16px;
            padding: 12px 0;
            margin-top: 12px;
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .mobile-nav ul li a {
            display: block;
            padding: 12px 20px;
            color: #e2e8f0;
            font-weight: 500;
            border-left: 3px solid transparent;
            transition: all 0.2s;
        }
        .mobile-nav ul li a:hover {
            background: rgba(255, 255, 255, 0.06);
            border-left-color: #facc15;
            color: #facc15;
            text-decoration: none;
        }
        .breadcrumb {
            background: #f1f5f9;
            padding: 12px 0;
            border-bottom: 1px solid #e2e8f0;
            font-size: 0.85rem;
        }
        .breadcrumb ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb ul li {
            display: flex;
            align-items: center;
            gap: 6px;
            color: #475569;
        }
        .breadcrumb ul li+li::before {
            content: "\f054";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 0.6rem;
            color: #94a3b8;
        }
        .breadcrumb ul li a {
            color: #0f3b5e;
        }
        .breadcrumb ul li a:hover {
            color: #0284c7;
        }
        .breadcrumb ul li:last-child {
            color: #1e293b;
            font-weight: 600;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        @media (max-width: 992px) {
            .main-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }
        .article-body {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        @media (max-width: 992px) {
            .sidebar {
                position: static;
            }
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0b1a2c;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #0f2a40;
            margin-top: 48px;
            margin-bottom: 16px;
            padding-bottom: 8px;
            border-bottom: 3px solid #facc15;
            display: inline-block;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #1a3a5a;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #2c4a6e;
            margin-top: 24px;
            margin-bottom: 8px;
        }
        p {
            margin-bottom: 18px;
            color: #334155;
        }
        .lead {
            font-size: 1.2rem;
            color: #1e293b;
            font-weight: 400;
            line-height: 1.8;
            border-left: 4px solid #38bdf8;
            padding-left: 20px;
            background: #f0f9ff;
            border-radius: 0 8px 8px 0;
            padding: 16px 20px;
        }
        .highlight {
            background: #fef9c3;
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.4rem;
        }
        .featured-image {
            margin: 30px 0;
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.10);
            overflow: hidden;
        }
        .featured-image img {
            width: 100%;
            object-fit: cover;
        }
        .featured-image figcaption {
            background: #f1f5f9;
            padding: 12px 18px;
            font-size: 0.85rem;
            color: #475569;
            font-style: italic;
        }
        .sidebar-card {
            background: #ffffff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            margin-bottom: 24px;
            border: 1px solid #e2e8f0;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-top: 0;
            margin-bottom: 12px;
            color: #0f2a40;
            border-bottom: 2px solid #facc15;
            padding-bottom: 6px;
            display: inline-block;
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid #f1f5f9;
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card ul li a i {
            color: #facc15;
            font-size: 0.8rem;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin: 20px 0;
        }
        .search-form input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid #e2e8f0;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
            background: #ffffff;
        }
        .search-form input:focus {
            border-color: #0f3b5e;
        }
        .search-form button {
            background: #0f3b5e;
            color: white;
            border: none;
            border-radius: 40px;
            padding: 12px 24px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #0284c7;
        }
        .interaction-section {
            background: #ffffff;
            border-radius: 20px;
            padding: 32px;
            margin-top: 48px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            border: 1px solid #e2e8f0;
        }
        .interaction-section h2 {
            margin-top: 0;
            border-bottom: none;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 4px;
            color: #1e293b;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.2s;
            background: #f8fafc;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #0f3b5e;
            outline: none;
            background: #ffffff;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn-primary {
            background: #0f3b5e;
            color: white;
            padding: 12px 32px;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary:hover {
            background: #0284c7;
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
            transition: color 0.2s;
        }
        .rating-stars i {
            transition: color 0.2s, transform 0.1s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #facc15;
            transform: scale(1.1);
        }
        .rating-stars i.active {
            color: #fbbf24;
        }
        .styled-table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
        }
        .styled-table thead {
            background: #0f2a40;
            color: #f1f5f9;
        }
        .styled-table thead th {
            padding: 14px 18px;
            text-align: left;
            font-weight: 600;
        }
        .styled-table tbody td {
            padding: 14px 18px;
            border-bottom: 1px solid #e2e8f0;
        }
        .styled-table tbody tr:nth-child(even) {
            background: #f8fafc;
        }
        .styled-table tbody tr:hover {
            background: #f1f5f9;
        }
        .site-footer {
            background: #0b1a2c;
            color: #cbd5e1;
            padding: 40px 0 20px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 30px;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .footer-brand h3 {
            color: #facc15;
            margin-top: 0;
            font-size: 1.4rem;
        }
        .footer-brand p {
            color: #94a3b8;
            font-size: 0.9rem;
        }
        .footer-links h4 {
            color: #e2e8f0;
            margin-top: 0;
            font-size: 1rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links ul li {
            padding: 4px 0;
        }
        .footer-links ul li a {
            color: #94a3b8;
            font-size: 0.9rem;
        }
        .footer-links ul li a:hover {
            color: #facc15;
        }
        friend-link {
            display: block;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 10px;
            margin-top: 8px;
            font-size: 0.9rem;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        friend-link a {
            color: #94a3b8;
        }
        friend-link a:hover {
            color: #facc15;
        }
        .copyright {
            border-top: 1px solid #1e3a5a;
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: #64748b;
        }
        .copyright strong {
            color: #94a3b8;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .nav-list {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo span {
                font-size: 0.7rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
            }
            .interaction-section {
                padding: 20px;
            }
            .sidebar-card {
                padding: 16px;
            }
            .styled-table {
                font-size: 0.85rem;
            }
            .styled-table thead th,
            .styled-table tbody td {
                padding: 10px 12px;
            }
            .breadcrumb ul {
                font-size: 0.75rem;
                gap: 4px 8px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            h1 {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .my-logo i {
                font-size: 1.4rem;
            }
        }
        .text-muted {
            color: #64748b;
            font-size: 0.9rem;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .last-updated {
            display: inline-block;
            background: #e2e8f0;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.8rem;
            color: #475569;
            font-weight: 500;
        }
        .tag {
            display: inline-block;
            background: #dbeafe;
            color: #1e40af;
            padding: 2px 12px;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
        }