*,
        *::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: #1e1e2a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #0a66c2;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #004182;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 0.5rem;
            color: #0a1e3c;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-top: 2.8rem;
            margin-bottom: 1rem;
            color: #0f2a4a;
            border-bottom: 3px solid #c8a84e;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            color: #1a3a5a;
        }
        h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
            color: #2a4a6a;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        .lead {
            font-size: 1.25rem;
            font-weight: 400;
            color: #2c3e50;
            margin-bottom: 2rem;
        }
        .text-muted {
            color: #5e6f88;
        }
        .text-small {
            font-size: 0.9rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0a1e3c 0%, #1a3a6a 100%);
            color: #fff;
            padding: 0 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 20px;
            max-width: 1200px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #f0d78c;
            letter-spacing: -0.03em;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
            transition: transform 0.2s ease;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #fae6a8;
        }
        .my-logo i {
            margin-right: 8px;
            color: #c8a84e;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 12px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
        }
        .nav-menu a {
            color: #e8eef5;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.4rem 0.8rem;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
        }
        .nav-menu a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f0d78c;
            text-decoration: none;
        }
        .nav-menu a i {
            margin-right: 5px;
            font-size: 0.85rem;
        }
        .breadcrumbs {
            background: #e9edf4;
            padding: 0.6rem 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0d8e4;
        }
        .breadcrumbs ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0;
        }
        .breadcrumbs li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #7a8aa0;
            font-weight: 600;
        }
        .breadcrumbs a {
            color: #0a66c2;
        }
        .breadcrumbs .current {
            color: #2c3e50;
            font-weight: 500;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem 0 3rem;
        }
        .main-content {
            min-width: 0;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            margin-bottom: 1.5rem;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-top: 0;
            margin-bottom: 1rem;
            border-bottom: 2px solid #eef2f7;
            padding-bottom: 0.6rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 0.6rem;
        }
        .sidebar-card li a {
            font-weight: 500;
        }
        .article-card {
            background: #fff;
            border-radius: 20px;
            padding: 2.5rem 2.8rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
            margin-bottom: 2.5rem;
        }
        .featured-image {
            margin: 1.8rem 0 2.2rem;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .featured-image figcaption {
            background: #f0f3f8;
            padding: 0.6rem 1rem;
            font-size: 0.9rem;
            color: #4a5a6a;
            text-align: center;
        }
        .last-updated {
            display: inline-block;
            background: #eef3fa;
            padding: 0.3rem 1rem;
            border-radius: 20px;
            font-size: 0.85rem;
            color: #3a5a7a;
            margin-bottom: 1.2rem;
        }
        .last-updated i {
            margin-right: 6px;
        }
        blockquote {
            border-left: 5px solid #c8a84e;
            background: #f8f6f0;
            padding: 1.2rem 1.8rem;
            margin: 1.8rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2a3a4a;
        }
        blockquote cite {
            display: block;
            margin-top: 0.6rem;
            font-size: 0.9rem;
            font-style: normal;
            color: #5a6a7a;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e8edf8, #f0f4fa);
            border-radius: 16px;
            padding: 1.8rem 2rem;
            margin: 1.8rem 0;
            border-left: 6px solid #c8a84e;
        }
        .highlight-box h4 {
            margin-top: 0;
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1rem;
            margin: 1.5rem 0;
        }
        .data-item {
            background: #f5f8fe;
            border-radius: 12px;
            padding: 1rem 1.2rem;
            text-align: center;
            border: 1px solid #e0e8f0;
        }
        .data-item .number {
            font-size: 2rem;
            font-weight: 800;
            color: #0a1e3c;
            display: block;
        }
        .data-item .label {
            font-size: 0.9rem;
            color: #4a5a6a;
        }
        .search-form {
            display: flex;
            gap: 0.6rem;
            margin: 1.5rem 0;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 180px;
            padding: 0.75rem 1.2rem;
            border: 2px solid #d0d8e4;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s, box-shadow 0.2s;
            background: #fff;
        }
        .search-form input:focus {
            border-color: #c8a84e;
            box-shadow: 0 0 0 4px rgba(200, 168, 78, 0.15);
        }
        .search-form button {
            padding: 0.75rem 1.8rem;
            background: #0a1e3c;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .search-form button:hover {
            background: #1a3a6a;
            transform: translateY(-1px);
        }
        .search-form button i {
            margin-right: 6px;
        }
        .comment-box,
        .rating-box {
            background: #fff;
            border-radius: 20px;
            padding: 2rem 2.5rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
            margin-bottom: 2rem;
        }
        .comment-box textarea {
            width: 100%;
            padding: 1rem 1.2rem;
            border: 2px solid #d0d8e4;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            resize: vertical;
            min-height: 120px;
            outline: none;
            transition: border 0.2s, box-shadow 0.2s;
        }
        .comment-box textarea:focus {
            border-color: #c8a84e;
            box-shadow: 0 0 0 4px rgba(200, 168, 78, 0.1);
        }
        .comment-box .form-row {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-top: 1rem;
        }
        .comment-box .form-row input {
            flex: 1;
            min-width: 180px;
            padding: 0.7rem 1.2rem;
            border: 2px solid #d0d8e4;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
        }
        .comment-box .form-row input:focus {
            border-color: #c8a84e;
        }
        .comment-box .btn-submit {
            padding: 0.7rem 2rem;
            background: #c8a84e;
            color: #0a1e3c;
            border: none;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .comment-box .btn-submit:hover {
            background: #dbb95a;
            transform: translateY(-1px);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 2rem;
            color: #d0d8e4;
            cursor: pointer;
            margin: 0.8rem 0;
        }
        .rating-stars i {
            transition: color 0.15s, transform 0.15s;
        }
        .rating-stars i.active,
        .rating-stars i:hover {
            color: #f5b342;
            transform: scale(1.1);
        }
        .rating-stars i:hover~i {
            color: #d0d8e4;
            transform: scale(1);
        }
        .rating-box .btn-rate {
            padding: 0.6rem 1.8rem;
            background: #0a1e3c;
            color: #fff;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .rating-box .btn-rate:hover {
            background: #1a3a6a;
        }
        .site-footer {
            background: #0a1e3c;
            color: #d0dce8;
            padding: 2.5rem 20px 1.5rem;
            margin-top: 3rem;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        .footer-inner h4 {
            color: #f0d78c;
            margin-top: 0;
            font-size: 1.1rem;
        }
        .footer-inner a {
            color: #b0c8e0;
        }
        .footer-inner a:hover {
            color: #f0d78c;
        }
        .footer-links ul {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 0.4rem;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 12px;
            padding: 1.2rem 1.5rem;
            margin-top: 1rem;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            margin-bottom: 0.4rem;
            color: #b0c8e0;
        }
        friend-link a:hover {
            color: #f0d78c;
        }
        .copyright {
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            margin-top: 2rem;
            font-size: 0.9rem;
            color: #8a9ab0;
        }
        .copyright strong {
            color: #d0dce8;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
            }
            .article-card {
                padding: 1.8rem 1.2rem;
            }
            .comment-box,
            .rating-box {
                padding: 1.5rem 1.2rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
        @media (max-width: 700px) {
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 1rem 0 0.5rem;
                gap: 0.4rem;
            }
            .nav-menu.show {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .header-inner {
                padding: 0.5rem 16px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
            }
            .search-form input {
                min-width: 120px;
            }
        }
        @media (max-width: 480px) {
            .data-grid {
                grid-template-columns: 1fr;
            }
            .container {
                padding: 0 12px;
            }
            .article-card {
                padding: 1.2rem 0.8rem;
            }
            .comment-box .form-row {
                flex-direction: column;
            }
            .comment-box .form-row input {
                min-width: auto;
            }
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .gap-1 {
            gap: 1rem;
        }
        .rounded-full {
            border-radius: 999px;
        }
        .bg-soft {
            background: #f0f4fc;
        }