* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            background: #f7f9fc;
            color: #1a1e2b;
            line-height: 1.8;
            padding: 0;
            margin: 0;
        }
        a {
            color: #004d99;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #cc3300;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 0;
            color: #0b1c2f;
        }
        h1 {
            font-size: 2.2rem;
            margin-bottom: 0.6rem;
        }
        h2 {
            font-size: 1.7rem;
            margin-top: 2.8rem;
            margin-bottom: 0.8rem;
            border-bottom: 3px solid #e60000;
            padding-bottom: 0.3rem;
            display: inline-block;
        }
        h3 {
            font-size: 1.35rem;
            margin-top: 2rem;
            margin-bottom: 0.6rem;
            color: #003366;
        }
        h4 {
            font-size: 1.1rem;
            margin-top: 1.4rem;
            margin-bottom: 0.4rem;
            color: #1a3a5c;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(145deg, #0b1c2f 0%, #1a3a5c 100%);
            color: #fff;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            max-width: 1200px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #ffb347, #ff6b35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: none;
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: #aac8e0;
            color: #aac8e0;
            display: block;
            font-weight: 400;
            letter-spacing: 0.5px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.5rem;
            padding: 8px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        nav a {
            color: #e8f0f8;
            padding: 8px 16px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.9rem;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        nav a:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #ffcc00;
            text-decoration: none;
        }
        nav a i {
            margin-right: 6px;
        }
        .breadcrumb {
            background: #eef3f8;
            padding: 10px 20px;
            font-size: 0.85rem;
            border-bottom: 1px solid #dce3ec;
        }
        .breadcrumb-inner {
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb a {
            color: #004d99;
        }
        .breadcrumb span {
            color: #555;
        }
        main {
            padding: 30px 20px 50px;
        }
        .content-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        .article-body {
            background: #fff;
            border-radius: 20px;
            padding: 30px 35px;
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.05);
        }
        .article-body .update-badge {
            display: inline-block;
            background: #e60000;
            color: #fff;
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .article-body .featured-image {
            margin: 24px 0 28px;
            border-radius: 16px;
            overflow: hidden;
            background: #eef3f8;
            position: relative;
        }
        .article-body .featured-image img {
            width: 100%;
            object-fit: cover;
            min-height: 220px;
            background: #dce3ec;
        }
        .article-body .featured-image figcaption {
            padding: 10px 16px;
            font-size: 0.85rem;
            color: #555;
            background: #f4f7fa;
            border-top: 1px solid #e0e6ee;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 22px 20px;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8edf4;
        }
        .sidebar-card h3 {
            font-size: 1.15rem;
            margin-top: 0;
            margin-bottom: 14px;
            border-bottom: 2px solid #e60000;
            padding-bottom: 6px;
            display: inline-block;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card ul li {
            padding: 6px 0;
            border-bottom: 1px solid #f0f3f8;
        }
        .sidebar-card ul li a {
            font-weight: 500;
        }
        .form-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px 26px;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8edf4;
            margin-top: 32px;
        }
        .form-card h3 {
            margin-top: 0;
            font-size: 1.3rem;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 4px;
            font-size: 0.9rem;
            color: #1a3a5c;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #dce3ec;
            border-radius: 10px;
            font-size: 1rem;
            background: #fafcff;
            transition: border 0.2s;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: #004d99;
            outline: none;
            background: #fff;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 30px;
            background: linear-gradient(145deg, #004d99, #003366);
            color: #fff;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: transform 0.15s, box-shadow 0.2s;
        }
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(0, 77, 153, 0.3);
        }
        .btn-secondary {
            background: linear-gradient(145deg, #e60000, #b30000);
        }
        .btn-secondary:hover {
            box-shadow: 0 8px 25px rgba(230, 0, 0, 0.3);
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 2rem;
            color: #ffb347;
            cursor: pointer;
        }
        .rating-stars i {
            transition: transform 0.1s, color 0.1s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
            color: #ff8c00;
        }
        footer {
            background: #0b1c2f;
            color: #c8d8e8;
            padding: 40px 20px 20px;
            margin-top: 40px;
        }
        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 30px;
        }
        .footer-inner h4 {
            color: #ffcc00;
            margin-top: 0;
            margin-bottom: 12px;
            font-size: 1.1rem;
        }
        .footer-inner a {
            color: #aac8e0;
        }
        .footer-inner a:hover {
            color: #ffcc00;
        }
        friend-link {
            display: block;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid #1f3a55;
            grid-column: 1 / -1;
        }
        friend-link a {
            display: inline-block;
            margin-right: 20px;
            margin-bottom: 8px;
            font-size: 0.9rem;
        }
        .copyright {
            grid-column: 1 / -1;
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #1f3a55;
            font-size: 0.85rem;
            color: #8899aa;
            margin-top: 10px;
        }
        @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) {
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 12px 0 6px;
                gap: 4px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 10px 16px;
                border-radius: 8px;
            }
            .header-inner {
                padding: 10px 16px;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .article-body {
                padding: 20px 16px;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.35rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .rating-stars {
                font-size: 1.6rem;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .breadcrumb {
                font-size: 0.75rem;
                padding: 8px 14px;
            }
            .article-body {
                padding: 16px 12px;
            }
            .form-card {
                padding: 16px 14px;
            }
        }
        .highlight-box {
            background: #f0f7ff;
            border-left: 5px solid #004d99;
            padding: 18px 22px;
            border-radius: 8px;
            margin: 20px 0;
        }
        .highlight-box.warning {
            background: #fff7e6;
            border-left-color: #ff8c00;
        }
        .highlight-box.danger {
            background: #fff0f0;
            border-left-color: #e60000;
        }
        .emoji-big {
            font-size: 1.8rem;
            margin-right: 6px;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
            gap: 16px;
            margin: 20px 0;
        }
        .stat-card {
            background: #f4f8ff;
            border-radius: 12px;
            padding: 16px 12px;
            text-align: center;
            border: 1px solid #e0e8f2;
        }
        .stat-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #004d99;
            display: block;
        }
        .stat-card .label {
            font-size: 0.85rem;
            color: #556;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        table th {
            background: #0b1c2f;
            color: #fff;
            padding: 10px 14px;
            text-align: left;
        }
        table td {
            padding: 9px 14px;
            border-bottom: 1px solid #e0e6ee;
        }
        table tr:nth-child(even) {
            background: #f8fafd;
        }
        .schema-hidden {
            display: none;
        }