*,
        *::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: #f8f9fc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #0a4b7a;
            text-decoration: none;
            transition: color 0.25s;
        }
        a:hover {
            color: #e67e22;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1rem;
        }
        header {
            background: linear-gradient(145deg, #0b1a2e, #132c42);
            color: #fff;
            padding: 1.2rem 0;
            border-radius: 0 0 28px 28px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
            margin-bottom: 2rem;
            position: relative;
            z-index: 10;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem 1.5rem;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 900;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f7d875, #f5b041);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 0 12px rgba(245, 176, 65, 0.3);
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.9rem;
            font-weight: 400;
            color: #b0c7db;
            background: none;
            -webkit-background-clip: unset;
            background-clip: unset;
            display: block;
            letter-spacing: 1px;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 0.5rem 1.2rem;
            flex-wrap: wrap;
        }
        .nav-list {
            display: flex;
            list-style: none;
            gap: 0.2rem 1.2rem;
            flex-wrap: wrap;
            padding: 0;
            margin: 0;
        }
        .nav-list li a {
            color: #e0edf5;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0.6rem;
            border-radius: 20px;
            transition: background 0.25s, color 0.25s;
        }
        .nav-list li a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #f5b041;
            text-decoration: none;
        }
        .nav-list li a i {
            margin-right: 0.3rem;
            font-size: 0.85rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-size: 1.6rem;
            padding: 0.2rem 0.7rem;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #eef3f7;
            padding: 0.6rem 1.2rem;
            border-radius: 40px;
            font-size: 0.85rem;
            margin: 1rem 0 1.8rem 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.3rem 0.6rem;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }
        .breadcrumb a {
            color: #0a4b7a;
        }
        .breadcrumb span {
            color: #64748b;
        }
        .breadcrumb .sep {
            color: #94a3b8;
            font-weight: 300;
        }
        .search-bar {
            display: flex;
            gap: 0.4rem;
            max-width: 360px;
            width: 100%;
            background: #fff;
            border-radius: 40px;
            padding: 0.2rem 0.2rem 0.2rem 1rem;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
            border: 1px solid #dce5ed;
        }
        .search-bar input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 0.5rem 0;
            font-size: 0.9rem;
            outline: none;
            color: #1e293b;
            min-width: 0;
        }
        .search-bar button {
            background: #0a4b7a;
            color: #fff;
            border: none;
            padding: 0.5rem 1.2rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            font-size: 0.9rem;
            white-space: nowrap;
        }
        .search-bar button:hover {
            background: #e67e22;
            transform: scale(0.97);
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 900;
            line-height: 1.2;
            margin: 1.2rem 0 0.6rem 0;
            color: #0b1a2e;
            letter-spacing: -0.5px;
        }
        h1 i {
            color: #f5b041;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            margin: 2.8rem 0 1rem 0;
            color: #0f2c44;
            border-left: 5px solid #f5b041;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin: 2rem 0 0.7rem 0;
            color: #1a3f5c;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            margin: 1.4rem 0 0.5rem 0;
            color: #2c3e50;
        }
        p {
            margin: 0 0 1.2rem 0;
            color: #2d3748;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 400;
            color: #1e293b;
            background: #eef6fc;
            padding: 1.2rem 1.6rem;
            border-radius: 16px;
            border-left: 6px solid #f5b041;
        }
        .update-badge {
            display: inline-block;
            background: #0a4b7a;
            color: #fff;
            padding: 0.2rem 1.2rem;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.3px;
            margin-bottom: 1rem;
        }
        .featured-image {
            margin: 2rem 0;
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
            overflow: hidden;
        }
        .featured-image img {
            width: 100%;
            height: auto;
            max-height: 520px;
            object-fit: cover;
        }
        .featured-image figcaption {
            background: #eef3f7;
            padding: 0.7rem 1.2rem;
            font-size: 0.85rem;
            color: #475569;
            text-align: center;
        }
        .insight-box {
            background: #f0f7fe;
            border-radius: 20px;
            padding: 1.6rem 2rem;
            margin: 2rem 0;
            border: 1px solid #d9e6f2;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
        }
        .insight-box i {
            color: #f5b041;
            margin-right: 0.5rem;
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.2rem;
            margin: 1.8rem 0;
        }
        .data-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.2rem 1.4rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
            border: 1px solid #e9edf2;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .data-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
        }
        .data-card .num {
            font-size: 2rem;
            font-weight: 800;
            color: #0a4b7a;
        }
        .data-card .label {
            font-weight: 500;
            color: #475569;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.8rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
        }
        th,
        td {
            padding: 0.8rem 1.2rem;
            text-align: left;
            border-bottom: 1px solid #e9edf2;
        }
        th {
            background: #0b1a2e;
            color: #fff;
            font-weight: 600;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f4f8fc;
        }
        .feedback-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 3rem 0;
        }
        .feedback-card {
            background: #fff;
            border-radius: 20px;
            padding: 1.8rem 2rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e9edf2;
        }
        .feedback-card h3 {
            margin-top: 0;
        }
        .feedback-card form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .feedback-card input,
        .feedback-card textarea,
        .feedback-card select {
            padding: 0.7rem 1rem;
            border: 1px solid #dce5ed;
            border-radius: 12px;
            font-size: 0.95rem;
            background: #fafcfe;
            transition: border 0.2s;
            font-family: inherit;
        }
        .feedback-card input:focus,
        .feedback-card textarea:focus,
        .feedback-card select:focus {
            border-color: #0a4b7a;
            outline: none;
            box-shadow: 0 0 0 3px rgba(10, 75, 122, 0.1);
        }
        .feedback-card textarea {
            min-height: 90px;
            resize: vertical;
        }
        .feedback-card .btn-submit {
            background: #0a4b7a;
            color: #fff;
            border: none;
            padding: 0.7rem 1.6rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            align-self: flex-start;
            font-size: 0.95rem;
        }
        .feedback-card .btn-submit:hover {
            background: #e67e22;
            transform: scale(0.97);
        }
        .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: 1.8rem;
            color: #d1d9e6;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked~label,
        .star-rating label:hover,
        .star-rating label:hover~label {
            color: #f5b041;
        }
        friend-link {
            display: block;
            background: #0f2c44;
            color: #e0edf5;
            padding: 1.6rem 2rem;
            border-radius: 24px;
            margin: 2.5rem 0 1.5rem 0;
        }
        friend-link a {
            color: #f7d875;
            font-weight: 500;
            display: inline-block;
            margin: 0.3rem 1.2rem 0.3rem 0;
        }
        friend-link a:hover {
            color: #fff;
            text-decoration: underline;
        }
        friend-link .fl-title {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 0.8rem;
            color: #f5b041;
        }
        footer {
            background: #0b1a2e;
            color: #b0c7db;
            padding: 2rem 0;
            border-radius: 28px 28px 0 0;
            margin-top: 3rem;
            text-align: center;
        }
        footer .copyright {
            font-size: 0.85rem;
            opacity: 0.8;
        }
        footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem 2rem;
            margin-bottom: 1rem;
        }
        footer .footer-links a {
            color: #b0c7db;
        }
        footer .footer-links a:hover {
            color: #f5b041;
        }
        @media (max-width: 820px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .feedback-section {
                grid-template-columns: 1fr;
            }
            .header-inner {
                flex-direction: column;
                align-items: stretch;
            }
            .nav-wrapper {
                flex-direction: column;
                align-items: stretch;
                gap: 0.8rem;
            }
            .nav-list {
                flex-direction: column;
                gap: 0.2rem;
                max-height: 0;
                overflow: hidden;
                opacity: 0;
                transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease;
                padding: 0 0.5rem;
            }
            .nav-list li a {
                display: block;
                padding: 0.5rem 0.8rem;
            }
            #nav-toggle:checked~.nav-list {
                max-height: 600px;
                opacity: 1;
                padding: 0.5rem 0.5rem;
            }
            .hamburger {
                display: inline-block;
                align-self: flex-end;
            }
            .search-bar {
                max-width: 100%;
            }
            .my-logo {
                font-size: 1.6rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 0.4rem 0.8rem;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
            }
            .insight-box {
                padding: 1.2rem 1.2rem;
            }
        }
        @media (max-width: 480px) {
            body {
                padding: 0 0.6rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            .data-grid {
                grid-template-columns: 1fr;
            }
            .feedback-card {
                padding: 1.2rem;
            }
            friend-link {
                padding: 1rem 1.2rem;
            }
            .table-wrap table {
                font-size: 0.85rem;
            }
            th,
            td {
                padding: 0.5rem 0.6rem;
            }
        }
        .toc {
            background: #fff;
            border-radius: 16px;
            padding: 1.2rem 1.8rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            border: 1px solid #e9edf2;
            margin: 1.8rem 0;
        }
        .toc summary {
            font-weight: 700;
            font-size: 1.1rem;
            cursor: pointer;
            color: #0b1a2e;
        }
        .toc ol {
            margin: 0.8rem 0 0 0;
        }
        .toc ol li a {
            color: #0a4b7a;
        }
        .highlight {
            background: #fef9e7;
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .badge {
            display: inline-block;
            background: #e67e22;
            color: #fff;
            font-size: 0.7rem;
            padding: 0.15rem 0.6rem;
            border-radius: 40px;
            font-weight: 700;
            letter-spacing: 0.3px;
        }
        .btn-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #0a4b7a;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            transition: background 0.25s, transform 0.2s;
            z-index: 99;
            border: none;
            cursor: pointer;
        }
        .btn-top:hover {
            background: #e67e22;
            transform: translateY(-4px);
        }
        .btn-top i {
            color: #fff;
        }