*,
        *::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, sans-serif;
            background: #f7f9fc;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #1a6fb5;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #0d4a7a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: #0f1a2e;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.5rem;
        }
        h2 {
            font-size: 1.9rem;
            border-bottom: 2px solid #dce3ed;
            padding-bottom: 0.4rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        h4 {
            font-size: 1.2rem;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0f1a2e 0%, #1a2f4a 100%);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px 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: 1.5rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #f5d742;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
            transition: opacity 0.2s;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
            color: #f5d742;
        }
        .my-logo i {
            font-size: 1.8rem;
            color: #7fc8f8;
        }
        .my-logo span {
            font-size: 0.85rem;
            font-weight: 300;
            color: #aac7e0;
            letter-spacing: 0.3px;
            display: none;
        }
        @media(min-width:480px) {
            .my-logo span {
                display: inline;
            }
        }
        .nav-toggle {
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 0.2rem 0.4rem;
            display: block;
            transition: transform 0.2s;
        }
        .nav-toggle:hover {
            transform: scale(1.1);
        }
        @media(min-width:768px) {
            .nav-toggle {
                display: none;
            }
        }
        .main-nav {
            width: 100%;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s ease, opacity 0.3s ease;
            opacity: 0;
            background: rgba(15, 26, 46, 0.95);
            border-radius: 0 0 12px 12px;
            margin-top: 0.4rem;
        }
        .main-nav.open {
            max-height: 600px;
            opacity: 1;
            padding: 0.6rem 0 1rem 0;
        }
        .main-nav ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.2rem;
        }
        .main-nav ul li a {
            color: #e8edf5;
            padding: 0.5rem 1rem;
            display: block;
            border-radius: 6px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: background 0.2s, color 0.2s;
        }
        .main-nav ul li a:hover {
            background: rgba(127, 200, 248, 0.15);
            color: #7fc8f8;
            text-decoration: none;
        }
        .main-nav ul li a i {
            margin-right: 0.5rem;
            width: 1.2rem;
            text-align: center;
        }
        @media(min-width:768px) {
            .main-nav {
                width: auto;
                max-height: none !important;
                opacity: 1 !important;
                background: transparent;
                margin-top: 0;
                border-radius: 0;
                overflow: visible;
                padding: 0 !important;
            }
            .main-nav ul {
                flex-direction: row;
                gap: 0.2rem;
                flex-wrap: wrap;
            }
            .main-nav ul li a {
                padding: 0.4rem 0.9rem;
                font-size: 0.9rem;
            }
        }
        .breadcrumbs {
            padding: 0.6rem 0;
            font-size: 0.85rem;
            color: #5a6f84;
            background: #eef2f7;
            border-bottom: 1px solid #dce3ed;
        }
        .breadcrumbs a {
            color: #1a6fb5;
        }
        .breadcrumbs a:hover {
            text-decoration: underline;
        }
        .breadcrumbs .sep {
            margin: 0 0.4rem;
            color: #8a9db0;
        }
        .hero-section {
            background: linear-gradient(145deg, #e8eff9 0%, #d4e2f0 100%);
            border-radius: 16px;
            padding: 2rem 1.8rem;
            margin: 1.5rem 0 2rem 0;
            border-left: 6px solid #f5d742;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
        }
        .hero-section h1 {
            margin-top: 0;
            font-size: 2.2rem;
        }
        .hero-section .meta {
            font-size: 0.9rem;
            color: #3d5a73;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 0.6rem;
        }
        .hero-section .meta i {
            margin-right: 0.3rem;
        }
        .content-wrap {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        @media(min-width:992px) {
            .content-wrap {
                grid-template-columns: 1fr 300px;
            }
        }
        .main-content {
            min-width: 0;
        }
        .main-content .featured-image {
            border-radius: 14px;
            overflow: hidden;
            margin: 1.5rem 0 2rem 0;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.07);
            background: #fff;
        }
        .main-content .featured-image img {
            width: 100%;
            object-fit: cover;
        }
        .main-content .featured-image figcaption {
            padding: 0.6rem 1rem;
            font-size: 0.85rem;
            color: #3d5a73;
            background: #f4f7fb;
        }
        .highlight-box {
            background: #f0f6fe;
            border-left: 5px solid #1a6fb5;
            padding: 1.2rem 1.6rem;
            border-radius: 0 12px 12px 0;
            margin: 1.5rem 0;
        }
        .highlight-box strong {
            color: #0f1a2e;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 1rem;
            margin: 1.8rem 0;
        }
        .stat-card {
            background: #fff;
            border-radius: 12px;
            padding: 1.2rem 1rem;
            text-align: center;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8edf5;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .stat-card .number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #1a6fb5;
            display: block;
        }
        .stat-card .label {
            font-size: 0.85rem;
            color: #4a5f74;
            margin-top: 0.2rem;
        }
        .sidebar {
            background: #fff;
            border-radius: 16px;
            padding: 1.6rem 1.4rem;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #e8edf5;
            align-self: start;
            position: sticky;
            top: 5.2rem;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #eef2f7;
            padding-bottom: 0.6rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar ul li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f4fa;
        }
        .sidebar ul li a {
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .sidebar ul li a i {
            color: #1a6fb5;
            width: 1rem;
        }
        .form-card {
            background: #fff;
            border-radius: 14px;
            padding: 1.6rem 1.5rem;
            margin: 2rem 0;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            border: 1px solid #e8edf5;
        }
        .form-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .form-card h3 i {
            color: #1a6fb5;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 0.3rem;
            color: #1e2a3a;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 0.9rem;
            border: 1.5px solid #dce3ed;
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: inherit;
            transition: border 0.2s, box-shadow 0.2s;
            background: #fafcfe;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #1a6fb5;
            box-shadow: 0 0 0 3px rgba(26, 111, 181, 0.12);
            outline: none;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: #1a6fb5;
            color: #fff;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            background: #0f4f8a;
            transform: translateY(-1px);
        }
        .btn:active {
            transform: translateY(0);
        }
        .btn-secondary {
            background: #e8edf5;
            color: #1e2a3a;
        }
        .btn-secondary:hover {
            background: #d4dce8;
        }
        .rating-stars {
            display: flex;
            gap: 0.3rem;
            font-size: 1.6rem;
            color: #dce3ed;
            cursor: pointer;
            transition: color 0.15s;
        }
        .rating-stars .star {
            transition: color 0.15s, transform 0.15s;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: #f5b342;
            transform: scale(1.1);
        }
        .rating-stars .star.selected {
            color: #f5b342;
        }
        .comment-list {
            margin-top: 1rem;
        }
        .comment-item {
            padding: 0.8rem 0;
            border-bottom: 1px solid #eef2f7;
            display: flex;
            gap: 0.8rem;
        }
        .comment-item .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #d4e2f0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #1a6fb5;
            font-weight: 700;
            flex-shrink: 0;
        }
        .comment-item .body .name {
            font-weight: 700;
            font-size: 0.9rem;
        }
        .comment-item .body .text {
            font-size: 0.9rem;
            color: #2a3f54;
        }
        .comment-item .body .date {
            font-size: 0.75rem;
            color: #6a7f94;
        }
        .site-footer {
            background: #0f1a2e;
            color: #c8d6e5;
            padding: 2rem 0 1.5rem 0;
            margin-top: 3rem;
            border-top: 4px solid #1a6fb5;
        }
        .site-footer a {
            color: #7fc8f8;
        }
        .site-footer a:hover {
            color: #b5dffa;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }
        @media(min-width:600px) {
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media(min-width:900px) {
            .footer-inner {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }
        .footer-inner h4 {
            color: #f5d742;
            margin-top: 0;
            font-size: 1.1rem;
        }
        .footer-inner ul {
            list-style: none;
            padding: 0;
        }
        .footer-inner ul li {
            padding: 0.2rem 0;
            font-size: 0.9rem;
        }
        .footer-inner ul li a {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 8px;
            padding: 0.8rem 1rem;
            margin: 0.4rem 0;
            border-left: 3px solid #f5d742;
            font-size: 0.9rem;
        }
        .friend-link a {
            color: #b5dffa;
        }
        .friend-link a:hover {
            color: #fff;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            margin-top: 1.5rem;
            border-top: 1px solid #1f334a;
            font-size: 0.85rem;
            color: #8a9db0;
        }
        @media(max-width:767px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            .hero-section {
                padding: 1.2rem 1rem;
            }
            .hero-section h1 {
                font-size: 1.7rem;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .sidebar {
                position: static;
                margin-top: 1.5rem;
            }
        }
        @media(max-width:480px) {
            .stat-grid {
                grid-template-columns: 1fr;
            }
            .form-card {
                padding: 1rem;
            }
        }
        .text-muted {
            color: #5a6f84;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .flex-between {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .gap-1 {
            gap: 1rem;
        }
        .last-updated {
            font-size: 0.85rem;
            color: #4a6f84;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .last-updated i {
            color: #1a6fb5;
        }
        .anchor-offset {
            scroll-margin-top: 5rem;
        }