*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
            background: #f5f7fa;
            color: #1a1a2e;
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #004e92;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #ff6b35;
            text-decoration: underline;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0a1f3e 0%, #1a3a6b 50%, #0a1f3e 100%);
            color: #fff;
            padding: 0 0 12px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f9d423, #ff4e50);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            font-size: 2rem;
            -webkit-text-fill-color: initial;
            color: #f9d423;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            -webkit-text-fill-color: initial;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 1px;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .main-nav {
            display: flex;
            gap: 8px;
            list-style: none;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e0e8f0;
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.25s;
            white-space: nowrap;
        }
        .main-nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #f9d423;
            text-decoration: none;
        }
        .main-nav a.active {
            background: #f9d423;
            color: #0a1f3e;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .breadcrumb {
            padding: 10px 20px;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }
        .breadcrumb a:hover {
            color: #f9d423;
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
            margin: 0 4px;
        }
        .breadcrumb .current {
            color: #f9d423;
        }
        .main-content {
            flex: 1;
            padding: 30px 0 50px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-body {
            background: #fff;
            border-radius: 20px;
            padding: 40px 44px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px 20px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 14px;
            color: #0a1f3e;
            border-bottom: 3px solid #f9d423;
            padding-bottom: 8px;
            display: inline-block;
        }
        .sidebar-card ul {
            list-style: none;
        }
        .sidebar-card li {
            padding: 6px 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .sidebar-card li:last-child {
            border-bottom: none;
        }
        .sidebar-card a {
            font-size: 0.9rem;
            display: block;
            padding: 4px 0;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0a1f3e;
            line-height: 1.2;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        h1 i {
            color: #f9d423;
            margin-right: 10px;
        }
        h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #0a1f3e;
            margin-top: 48px;
            margin-bottom: 18px;
            padding-bottom: 10px;
            border-bottom: 4px solid #f9d423;
            display: inline-block;
        }
        h2 i {
            color: #ff6b35;
            margin-right: 10px;
        }
        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            color: #1a3a6b;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        h3 i {
            color: #004e92;
            margin-right: 8px;
            font-size: 1.1rem;
        }
        h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #2d4a7a;
            margin-top: 22px;
            margin-bottom: 8px;
        }
        p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: #2d2d44;
        }
        .lead {
            font-size: 1.2rem;
            color: #444;
            font-weight: 400;
            line-height: 1.8;
        }
        .highlight {
            background: linear-gradient(to right, #fef9e7, #fdebd0);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.4rem;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            padding: 14px 0 20px;
            margin-bottom: 24px;
            border-bottom: 2px solid #f0f2f5;
            color: #666;
            font-size: 0.92rem;
        }
        .article-meta i {
            margin-right: 6px;
            color: #ff6b35;
        }
        .last-updated {
            background: #e8f0fe;
            padding: 4px 14px;
            border-radius: 30px;
            font-weight: 500;
            color: #004e92;
        }
        .featured-image {
            margin: 28px 0 32px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
            background: #f0f2f5;
        }
        .featured-image img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: #dde3ea;
        }
        .featured-image figcaption {
            padding: 12px 18px;
            font-size: 0.9rem;
            color: #555;
            background: #fafafa;
            border-top: 1px solid #eee;
            font-style: italic;
        }
        .links-list {
            background: #f8faff;
            border-radius: 14px;
            padding: 18px 22px;
            margin: 24px 0;
            border-left: 5px solid #ff6b35;
        }
        .links-list h4 {
            margin-top: 0;
            color: #0a1f3e;
        }
        .links-list ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 6px 20px;
        }
        .links-list li {
            padding: 4px 0;
        }
        .links-list a {
            font-size: 0.95rem;
        }
        .form-card {
            background: #f8faff;
            border-radius: 16px;
            padding: 28px 32px;
            margin: 32px 0;
            border: 1px solid #e8edf5;
        }
        .form-card h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 4px;
            font-size: 0.95rem;
            color: #1a3a6b;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #dde3ea;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: border 0.2s;
            background: #fff;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #004e92;
            outline: none;
            box-shadow: 0 0 0 4px rgba(0, 78, 146, 0.1);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: linear-gradient(135deg, #004e92, #1a3a6b);
            color: #fff;
            border: none;
            padding: 12px 32px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn:hover {
            background: linear-gradient(135deg, #003366, #0a1f3e);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 78, 146, 0.25);
        }
        .btn-secondary {
            background: #ff6b35;
        }
        .btn-secondary:hover {
            background: #e55a2b;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            gap: 6px;
            justify-content: flex-end;
            font-size: 1.8rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #ddd;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f9d423;
        }
        .sidebar .quick-links a {
            padding: 6px 0;
            display: block;
            border-bottom: 1px solid #f0f0f0;
            font-size: 0.9rem;
        }
        .sidebar .quick-links a:last-child {
            border-bottom: none;
        }
        .site-footer {
            background: #0a1f3e;
            color: #c8d6e5;
            padding: 40px 20px 20px;
            margin-top: 40px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-inner h4 {
            color: #f9d423;
            margin-top: 0;
            margin-bottom: 14px;
            font-size: 1.1rem;
        }
        .footer-inner a {
            color: #b0c4de;
        }
        .footer-inner a:hover {
            color: #f9d423;
        }
        .footer-inner ul {
            list-style: none;
        }
        .footer-inner li {
            padding: 4px 0;
        }
        friend-link {
            display: block;
            margin-top: 12px;
            padding: 12px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        friend-link a {
            color: #b0c4de;
            margin-right: 18px;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            color: #f9d423;
        }
        .copyright {
            text-align: center;
            padding-top: 24px;
            margin-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: #8899aa;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }
        .copyright strong {
            color: #c8d6e5;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #0a1f3e;
                padding: 12px 0;
                border-radius: 0 0 16px 16px;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
                gap: 2px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 24px;
                border-radius: 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            .nav-wrapper {
                position: relative;
            }
            .header-top {
                flex-wrap: wrap;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo small {
                font-size: 0.6rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .article-body {
                padding: 24px 18px;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .links-list ul {
                grid-template-columns: 1fr;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 8px 16px;
            }
            .form-card {
                padding: 20px 16px;
            }
        }
        @media (max-width: 480px) {
            .article-meta {
                flex-direction: column;
                gap: 8px;
                align-items: flex-start;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .star-rating {
                font-size: 1.5rem;
            }
        }
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #f0f2f5;
        }
        ::-webkit-scrollbar-thumb {
            background: #b0c4de;
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #8899aa;
        }
        @media print {
            .site-header {
                position: static;
            }
            .sidebar,
            .form-card,
            .hamburger {
                display: none !important;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .article-body {
                box-shadow: none;
                padding: 0;
            }
        }