*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            background: #f4f7fb;
            color: #1a2634;
            line-height: 1.7;
            padding: 0 16px;
        }
        a {
            color: #0066cc;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #004a99;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 0.75rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #0f1a2e;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
        }
        h1 {
            font-size: 2.4rem;
            border-left: 6px solid #f5a623;
            padding-left: 1rem;
            margin-top: 0.2rem;
        }
        h2 {
            font-size: 1.8rem;
            border-bottom: 2px solid #e2e8f0;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.15rem;
            color: #2c4a6e;
        }
        p {
            margin: 0.9rem 0;
            font-size: 1.02rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            border-radius: 20px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
            padding: 20px 30px 30px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 12px 14px 20px;
                border-radius: 12px;
            }
            h1 {
                font-size: 1.6rem;
                padding-left: 0.7rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            p {
                font-size: 0.98rem;
            }
            body {
                padding: 0 8px;
            }
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0 10px;
            border-bottom: 2px solid #eef2f7;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #0b2b4a;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #0b2b4a, #1e6a8f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #f5a623;
            margin-right: 6px;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            font-size: 1.6rem;
            background: none;
            border: none;
            color: #1a2634;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 6px;
        }
        .nav-toggle:hover {
            background: #eef2f7;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 18px;
            align-items: center;
        }
        .main-nav a {
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 2px;
            color: #1e3a5f;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
        }
        .main-nav a:hover {
            border-bottom-color: #f5a623;
            color: #0b2b4a;
            text-decoration: none;
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 12px 0 8px;
                gap: 2px;
                border-top: 1px solid #eef2f7;
                margin-top: 10px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 8px 0;
                width: 100%;
                border-bottom: 1px solid #f0f4fa;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 10px 0 6px;
            margin: 0;
            font-size: 0.88rem;
            color: #5a6a7a;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 10px;
            color: #b0c0d0;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #2c6b9e;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #1a2634;
            font-weight: 500;
        }
        .search-wrap {
            display: flex;
            max-width: 560px;
            margin: 20px 0 16px;
            border-radius: 50px;
            overflow: hidden;
            border: 1px solid #d0dae8;
            background: #ffffff;
            transition: box-shadow 0.25s;
        }
        .search-wrap:focus-within {
            box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.15);
            border-color: #0066cc;
        }
        .search-wrap input {
            flex: 1;
            padding: 12px 20px;
            border: none;
            outline: none;
            font-size: 0.98rem;
            background: transparent;
            min-width: 0;
        }
        .search-wrap button {
            background: #0066cc;
            color: #fff;
            border: none;
            padding: 0 26px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-wrap button:hover {
            background: #004a99;
        }
        .hero-img {
            margin: 18px 0 24px;
            border-radius: 16px;
            overflow: hidden;
            background: #eaf0f8;
            position: relative;
        }
        .hero-img img {
            width: 100%;
            max-height: 420px;
            object-fit: cover;
        }
        .hero-caption {
            font-size: 0.85rem;
            color: #4a5a6a;
            padding: 6px 12px 0;
            text-align: center;
            font-style: italic;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.2rem 0;
            font-size: 0.96rem;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .data-table th {
            background: #0b2b4a;
            color: #ffffff;
            padding: 12px 14px;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 10px 14px;
            border-bottom: 1px solid #e8edf4;
        }
        .data-table tr:nth-child(even) {
            background: #f8fafd;
        }
        .data-table tr:hover {
            background: #edf3fa;
        }
        @media (max-width: 600px) {
            .data-table {
                font-size: 0.82rem;
            }
            .data-table th,
            .data-table td {
                padding: 8px 8px;
            }
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 28px 0 18px;
        }
        @media (max-width: 680px) {
            .feedback-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }
        .card-block {
            background: #f9fbfe;
            border-radius: 16px;
            padding: 20px 22px;
            border: 1px solid #e6edf6;
            transition: box-shadow 0.2s;
        }
        .card-block:hover {
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.04);
        }
        .card-block h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .card-block form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 10px;
        }
        .card-block textarea,
        .card-block input,
        .card-block select {
            padding: 10px 14px;
            border-radius: 10px;
            border: 1px solid #d0dae8;
            font-size: 0.96rem;
            font-family: inherit;
            background: #ffffff;
            transition: border-color 0.2s;
            width: 100%;
        }
        .card-block textarea:focus,
        .card-block input:focus,
        .card-block select:focus {
            border-color: #0066cc;
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.08);
        }
        .card-block textarea {
            min-height: 90px;
            resize: vertical;
        }
        .card-block .btn-submit {
            background: #f5a623;
            color: #0f1a2e;
            border: none;
            padding: 11px 20px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.98rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .card-block .btn-submit:hover {
            background: #e0951a;
            transform: translateY(-1px);
        }
        .star-group {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #d0dae8;
            cursor: pointer;
            flex-direction: row-reverse;
            justify-content: flex-end;
        }
        .star-group input {
            display: none;
        }
        .star-group label {
            transition: color 0.15s, transform 0.1s;
        }
        .star-group label:hover,
        .star-group label:hover~label,
        .star-group input:checked~label {
            color: #f5a623;
            transform: scale(1.05);
        }
        friend-link {
            display: block;
            padding: 18px 0 10px;
            border-top: 2px solid #eef2f7;
            margin-top: 28px;
        }
        friend-link .fl-head {
            font-weight: 700;
            font-size: 1.1rem;
            color: #0b2b4a;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        friend-link .fl-list {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 20px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        friend-link .fl-list li a {
            font-size: 0.95rem;
            color: #2c6b9e;
        }
        friend-link .fl-list li a:hover {
            color: #004a99;
        }
        .site-footer {
            padding: 18px 0 10px;
            font-size: 0.88rem;
            color: #5a6a7a;
            text-align: center;
            border-top: 1px solid #eef2f7;
            margin-top: 12px;
        }
        .site-footer .copy {
            font-weight: 500;
            color: #1a2634;
        }
        .badge {
            display: inline-block;
            background: #f5a623;
            color: #0f1a2e;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 2px 12px;
            border-radius: 30px;
            letter-spacing: 0.3px;
            text-transform: uppercase;
        }
        .highlight-box {
            background: #f0f7fe;
            border-left: 5px solid #0066cc;
            padding: 14px 20px;
            border-radius: 0 12px 12px 0;
            margin: 1.2rem 0;
        }
        .emoji-lg {
            font-size: 1.3rem;
        }
        .last-updated {
            display: block;
            text-align: right;
            font-size: 0.85rem;
            color: #6a7a8a;
            margin: 6px 0 2px;
            font-style: italic;
        }
        .toc {
            background: #f4f8fe;
            padding: 16px 22px;
            border-radius: 14px;
            margin: 18px 0 22px;
            border: 1px solid #e2eaf4;
        }
        .toc ol {
            margin: 6px 0 0;
            padding-left: 1.2rem;
        }
        .toc ol li {
            margin-bottom: 0.2rem;
        }
        .toc ol li a {
            color: #1e3a5f;
        }
        .insight-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin: 1.2rem 0;
        }
        @media (max-width: 600px) {
            .insight-card {
                grid-template-columns: 1fr;
            }
        }
        .insight-item {
            background: #f9fbfe;
            border-radius: 12px;
            padding: 14px 18px;
            border: 1px solid #e6edf6;
        }
        .insight-item i {
            color: #f5a623;
            margin-right: 6px;
        }
        .btn-top {
            position: fixed;
            bottom: 24px;
            right: 24px;
            background: #0b2b4a;
            color: #fff;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
            transition: background 0.2s, transform 0.2s;
            border: none;
            cursor: pointer;
            z-index: 99;
        }
        .btn-top:hover {
            background: #1e6a8f;
            transform: translateY(-3px);
        }
        @media (max-width: 480px) {
            .btn-top {
                width: 38px;
                height: 38px;
                font-size: 1rem;
                right: 14px;
                bottom: 14px;
            }
        }