*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f5f7fa;
            color: #1a1e2b;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            padding: 0 0 0 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #1e6f9f;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover,
        a:focus {
            color: #0b3b5e;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: #0b1a2a;
        }
        h1 {
            font-size: 2.2rem;
            margin-bottom: 0.75rem;
        }
        h2 {
            font-size: 1.8rem;
            margin-top: 2.5rem;
            margin-bottom: 0.6rem;
            border-bottom: 3px solid #dce3ed;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.4rem;
            margin-top: 1.8rem;
            margin-bottom: 0.4rem;
        }
        h4 {
            font-size: 1.15rem;
            margin-top: 1.2rem;
            margin-bottom: 0.3rem;
            font-weight: 600;
        }
        p {
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0b1a2a 0%, #1a2f44 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem 1rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #fff;
            background: linear-gradient(135deg, #f9d976, #f39c12);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: opacity 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .my-logo i {
            -webkit-text-fill-color: #f39c12;
            font-size: 1.6rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.5rem;
            padding: 0.3rem 0.7rem;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .primary-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.2rem 0.8rem;
        }
        .primary-nav a {
            color: #e0e8f0;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .primary-nav a:hover,
        .primary-nav a:focus {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            text-decoration: none;
        }
        .primary-nav a i {
            margin-right: 0.3rem;
            font-size: 0.85rem;
        }
        .breadcrumb {
            background: #e9edf3;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d0d8e3;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.5rem;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #7a8a9e;
        }
        .breadcrumb a {
            color: #1e6f9f;
        }
        .breadcrumb .current {
            color: #3a4a5e;
            font-weight: 500;
        }
        .main-content {
            flex: 1;
            padding: 2rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        .content-body {
            background: #fff;
            border-radius: 16px;
            padding: 2rem 2.2rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .content-body .last-updated {
            font-size: 0.85rem;
            color: #6a7a8e;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .content-body .last-updated i {
            color: #1e6f9f;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.4rem 1.5rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-top: 0;
            margin-bottom: 0.8rem;
            border-bottom: 2px solid #e9edf3;
            padding-bottom: 0.5rem;
        }
        .sidebar-link-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
        }
        .sidebar-link-list li a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 0.5rem;
            border-radius: 6px;
            transition: background 0.15s;
            font-size: 0.95rem;
        }
        .sidebar-link-list li a:hover {
            background: #f0f4fa;
            text-decoration: none;
        }
        .sidebar-link-list li a i {
            color: #f39c12;
            width: 1.2rem;
            text-align: center;
        }
        .featured-img {
            margin: 1.8rem 0;
            border-radius: 14px;
            overflow: hidden;
            background: #e9edf3;
            position: relative;
        }
        .featured-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
            display: block;
        }
        .featured-img .img-caption {
            background: rgba(11, 26, 42, 0.75);
            color: #fff;
            padding: 0.6rem 1rem;
            font-size: 0.9rem;
            text-align: center;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            margin: 1.2rem 0;
        }
        .search-form input {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid #d0d8e3;
            border-radius: 10px;
            font-size: 1rem;
            background: #f9fafc;
            transition: border-color 0.2s;
        }
        .search-form input:focus {
            outline: none;
            border-color: #1e6f9f;
            background: #fff;
        }
        .search-form button {
            padding: 0.7rem 1.4rem;
            background: #1e6f9f;
            color: #fff;
            border: none;
            border-radius: 10px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .search-form button:hover {
            background: #0b3b5e;
            transform: translateY(-1px);
        }
        .search-form button:active {
            transform: translateY(1px);
        }
        .feedback-section {
            margin-top: 2.5rem;
            padding-top: 1.8rem;
            border-top: 2px solid #e9edf3;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }
        .feedback-card {
            background: #f9fafc;
            border-radius: 12px;
            padding: 1.4rem 1.6rem;
            border: 1px solid #e4e9f0;
        }
        .feedback-card h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .feedback-card label {
            font-weight: 600;
            font-size: 0.95rem;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 0.6rem 0.9rem;
            border: 2px solid #d0d8e3;
            border-radius: 8px;
            font-size: 0.95rem;
            background: #fff;
            transition: border-color 0.2s;
            width: 100%;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            outline: none;
            border-color: #1e6f9f;
        }
        .feedback-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .feedback-card button {
            padding: 0.6rem 1.2rem;
            background: #1e6f9f;
            color: #fff;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            align-self: flex-start;
        }
        .feedback-card button:hover {
            background: #0b3b5e;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.6rem;
            color: #ccc;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f39c12;
        }
        .site-footer {
            background: #0b1a2a;
            color: #c8d4e0;
            padding: 2rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        .footer-inner h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-top: 0;
            margin-bottom: 0.8rem;
        }
        .footer-inner a {
            color: #b0c4d8;
        }
        .footer-inner a:hover {
            color: #fff;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 0.8rem 1rem;
            border-radius: 8px;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            padding: 0.2rem 0;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            margin-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: #8a9aae;
        }
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .primary-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 0.8rem 0 0.2rem;
                gap: 0.2rem;
            }
            .primary-nav.open {
                display: flex;
            }
            .primary-nav a {
                width: 100%;
                padding: 0.5rem 0.6rem;
            }
            .content-body {
                padding: 1.2rem 1rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.75rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .sidebar-card {
                padding: 1rem;
            }
        }
        .highlight {
            background: #fef9e7;
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
        }
        .badge {
            display: inline-block;
            background: #1e6f9f;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.15rem 0.6rem;
            border-radius: 20px;
            letter-spacing: 0.3px;
        }
        .emoji-lg {
            font-size: 1.4rem;
            line-height: 1;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.2rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        table th,
        table td {
            padding: 0.6rem 0.8rem;
            border: 1px solid #dce3ed;
            text-align: left;
        }
        table th {
            background: #e9edf3;
            font-weight: 600;
        }
        table tr:nth-child(even) {
            background: #f9fafc;
        }
        @media (max-width: 768px) {
            .primary-nav {
                transition: max-height 0.3s ease, opacity 0.2s ease;
                max-height: 0;
                opacity: 0;
                overflow: hidden;
            }
            .primary-nav.open {
                max-height: 600px;
                opacity: 1;
            }
        }