*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
            background: #f4f7fa;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #1a6ea0;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover,
        a:focus {
            color: #0d4b73;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            color: #0a1a2b;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
        }
        h1 {
            font-size: 2.4rem;
            border-bottom: 3px solid #c8372e;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 2px solid #d9e1e8;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 500;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin: 0 0 1.5rem 1.8rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0a1a2b 0%, #1a2f44 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.7rem;
            font-weight: 700;
            color: #f5d742;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            text-decoration: none;
        }
        .my-logo i {
            font-size: 2rem;
            color: #e8553a;
        }
        .my-logo:hover {
            color: #ffea7a;
            text-decoration: none;
        }
        .my-logo span {
            font-weight: 300;
            color: #b0c7db;
            font-size: 0.9rem;
            margin-left: 0.3rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            font-size: 1.6rem;
            padding: 0.3rem 0.8rem;
            border-radius: 6px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            border-color: #f5d742;
            color: #f5d742;
        }
        .main-nav {
            display: flex;
            gap: 0.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .main-nav a {
            color: #e0edf5;
            padding: 0.4rem 0.9rem;
            border-radius: 4px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
            white-space: nowrap;
        }
        .main-nav a:hover,
        .main-nav a:focus {
            background: rgba(255, 255, 255, 0.12);
            color: #f5d742;
            text-decoration: none;
        }
        .main-nav a.active {
            background: rgba(245, 215, 66, 0.18);
            color: #f5d742;
        }
        .breadcrumb {
            background: #e9eff4;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #d2dce6;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            margin: 0;
            padding: 0;
        }
        .breadcrumb li+li::before {
            content: "/";
            color: #7a8a9a;
            margin-right: 0.6rem;
        }
        .breadcrumb a {
            color: #1a6ea0;
        }
        .breadcrumb .current {
            color: #4a5a6a;
            font-weight: 500;
        }
        .page-wrapper {
            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;
        }
        @media(max-width:992px) {
            .page-wrapper {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .main-content {
                order: 1;
            }
        }
        .sidebar-card {
            background: #fff;
            border-radius: 10px;
            padding: 1.2rem 1.4rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            border: 1px solid #e4ebf2;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-top: 0;
            margin-bottom: 0.8rem;
            border-bottom: 1px solid #e4ebf2;
            padding-bottom: 0.5rem;
            color: #0a1a2b;
        }
        .sidebar-card ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .sidebar-card li {
            padding: 0.35rem 0;
            border-bottom: 1px solid #f0f4f8;
        }
        .sidebar-card li:last-child {
            border-bottom: none;
        }
        .sidebar-card a {
            display: block;
            font-size: 0.9rem;
            padding: 0.2rem 0;
        }
        .sidebar-card a i {
            width: 1.2rem;
            color: #c8372e;
        }
        .search-form {
            display: flex;
            gap: 0.4rem;
            margin: 0.8rem 0;
        }
        .search-form input[type="text"] {
            flex: 1;
            padding: 0.6rem 1rem;
            border: 2px solid #d2dce6;
            border-radius: 6px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input[type="text"]:focus {
            border-color: #1a6ea0;
        }
        .search-form button {
            padding: 0.6rem 1.2rem;
            background: #1a6ea0;
            color: #fff;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .search-form button:hover {
            background: #0d4b73;
        }
        .featured-image {
            margin: 1.5rem 0;
            border-radius: 10px;
            box-shadow: 0 3px 12px rgba(0, 0, 0, 0.08);
        }
        .info-callout {
            background: #e8f0f8;
            border-left: 5px solid #1a6ea0;
            padding: 1.2rem 1.6rem;
            border-radius: 0 8px 8px 0;
            margin: 1.8rem 0;
        }
        .info-callout strong {
            color: #0a1a2b;
        }
        .info-callout i {
            color: #1a6ea0;
            margin-right: 0.4rem;
        }
        .highlight-box {
            background: #fdf8e8;
            border: 1px solid #f0dca0;
            border-radius: 8px;
            padding: 1rem 1.4rem;
            margin: 1.5rem 0;
        }
        .highlight-box i {
            color: #c88a2e;
            margin-right: 0.5rem;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04);
        }
        th,
        td {
            padding: 0.7rem 1rem;
            text-align: left;
            border-bottom: 1px solid #e4ebf2;
        }
        th {
            background: #1a2f44;
            color: #fff;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f4f9ff;
        }
        .comment-section,
        .rating-section {
            background: #fff;
            border-radius: 10px;
            padding: 1.6rem 1.8rem;
            margin: 2rem 0;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            border: 1px solid #e4ebf2;
        }
        .comment-section h3,
        .rating-section h3 {
            margin-top: 0;
        }
        .comment-form textarea,
        .comment-form input {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #d2dce6;
            border-radius: 6px;
            font-size: 0.95rem;
            font-family: inherit;
            margin-bottom: 0.8rem;
            outline: none;
            transition: border 0.2s;
        }
        .comment-form textarea:focus,
        .comment-form input:focus {
            border-color: #1a6ea0;
        }
        .comment-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            padding: 0.6rem 1.6rem;
            background: #1a6ea0;
            color: #fff;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .btn:hover {
            background: #0d4b73;
            transform: translateY(-1px);
        }
        .btn-secondary {
            background: #4a5a6a;
        }
        .btn-secondary:hover {
            background: #2e3f4f;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #d2dce6;
            cursor: pointer;
            margin: 0.6rem 0 1rem;
        }
        .star-rating i {
            transition: color 0.2s, transform 0.1s;
        }
        .star-rating i.active,
        .star-rating i:hover {
            color: #f5b342;
            transform: scale(1.08);
        }
        .star-rating i:hover~i {
            color: #d2dce6;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.5rem;
            padding: 1rem 0;
            margin-top: 1rem;
            border-top: 1px solid #d2dce6;
        }
        friend-link a {
            font-size: 0.9rem;
            padding: 0.2rem 0.8rem;
            background: #e9eff4;
            border-radius: 20px;
            transition: background 0.2s;
        }
        friend-link a:hover {
            background: #cbd8e4;
            text-decoration: none;
        }
        .site-footer {
            background: #0a1a2b;
            color: #b0c7db;
            padding: 2rem 0 1.5rem;
            margin-top: 2rem;
            font-size: 0.9rem;
        }
        .site-footer .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.5rem;
            align-items: center;
        }
        .site-footer .copyright {
            color: #7a9ab0;
            font-size: 0.85rem;
        }
        .site-footer a {
            color: #b0c7db;
        }
        .site-footer a:hover {
            color: #f5d742;
        }
        @media(max-width:768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: rgba(10, 26, 43, 0.98);
                padding: 1rem 0.5rem;
                border-radius: 0 0 10px 10px;
                gap: 0.1rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.6rem 1rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .page-wrapper {
                padding: 1rem 0 2rem;
            }
            .container {
                padding: 0 14px;
            }
            .sidebar-card {
                padding: 1rem;
            }
            .star-rating {
                font-size: 1.4rem;
            }
            .my-logo {
                font-size: 1.3rem;
            }
            .my-logo span {
                font-size: 0.75rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            table {
                font-size: 0.85rem;
            }
            th,
            td {
                padding: 0.5rem 0.6rem;
            }
        }
        @media(max-width:480px) {
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
            .site-footer .footer-inner {
                flex-direction: column;
                text-align: center;
            }
            h1 {
                font-size: 1.5rem;
            }
            .comment-section,
            .rating-section {
                padding: 1rem;
            }
        }
        .text-muted {
            color: #5a6a7a;
        }
        .mt-1 {
            margin-top: 0.8rem;
        }
        .mb-1 {
            margin-bottom: 0.8rem;
        }
        .flex {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .gap-1 {
            gap: 0.6rem;
        }
        .last-updated {
            font-size: 0.85rem;
            color: #6a7a8a;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            margin: 1rem 0 0.2rem;
        }
        .last-updated i {
            color: #1a6ea0;
        }
        .anchor-offset {
            scroll-margin-top: 80px;
        }