*,
        *::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, sans-serif;
            background: #f9fafc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #0b4a7b;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #e67e22;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        ul,
        ol {
            padding-left: 1.6rem;
            margin: 0.8rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: #0b2a41;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
        }
        h1 {
            font-size: 2.2rem;
            border-bottom: 4px solid #e67e22;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #e67e22;
            padding-left: 0.8rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #1e4a6b;
        }
        h4 {
            font-size: 1.2rem;
            color: #2c5f7e;
        }
        p {
            margin: 0.8rem 0;
            font-size: 1.05rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            border-radius: 24px 24px 0 0;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
            padding: 1.2rem 1.8rem 2rem;
        }
        header {
            background: linear-gradient(135deg, #0b2a41 0%, #1a4b6e 100%);
            color: #fff;
            padding: 1.2rem 1.8rem;
            border-radius: 20px 20px 0 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(to right, #f9d56e, #e67e22);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .my-logo a:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .my-logo small {
            font-size: 0.7rem;
            display: block;
            -webkit-text-fill-color: #cbd5e1;
            color: #cbd5e1;
            letter-spacing: 0.3px;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 2rem;
            cursor: pointer;
            padding: 0.2rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.6rem 1.2rem;
        }
        nav a {
            color: #e2e8f0;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.3rem 0.6rem;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
        }
        nav a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #f9d56e;
            text-decoration: none;
        }
        nav .nav-cta {
            background: #e67e22;
            color: #fff;
            padding: 0.4rem 1.2rem;
            border-radius: 40px;
            font-weight: 600;
        }
        nav .nav-cta:hover {
            background: #d35400;
            color: #fff;
        }
        .breadcrumb {
            background: #f1f5f9;
            padding: 0.6rem 1.2rem;
            border-radius: 30px;
            font-size: 0.9rem;
            margin: 1rem 0 1.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb a {
            color: #0b4a7b;
        }
        .breadcrumb span {
            color: #64748b;
        }
        .breadcrumb .current {
            color: #1e293b;
            font-weight: 600;
        }
        .search-section {
            background: #f1f5f9;
            border-radius: 20px;
            padding: 1.8rem 1.5rem;
            margin: 1.5rem 0;
            text-align: center;
        }
        .search-section h3 {
            margin-top: 0;
            color: #0b2a41;
        }
        .search-form {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.6rem;
            max-width: 640px;
            margin: 0.8rem auto 0;
        }
        .search-form input[type="text"] {
            flex: 1 1 240px;
            padding: 0.8rem 1.2rem;
            border: 2px solid #cbd5e1;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.2s;
        }
        .search-form input[type="text"]:focus {
            border-color: #e67e22;
        }
        .search-form button {
            background: #0b4a7b;
            color: #fff;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #e67e22;
        }
        .hero-img {
            margin: 1.8rem 0;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .hero-img img {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
        }
        .hero-img figcaption {
            background: #f1f5f9;
            padding: 0.8rem 1.2rem;
            font-size: 0.9rem;
            color: #475569;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.2rem;
        }
        .insight-box {
            background: #f0f7fe;
            border-left: 6px solid #e67e22;
            padding: 1.2rem 1.6rem;
            border-radius: 12px;
            margin: 1.2rem 0;
        }
        .insight-box strong {
            color: #0b2a41;
        }
        .stat-highlight {
            display: inline-block;
            background: #0b2a41;
            color: #f9d56e;
            padding: 0.2rem 1rem;
            border-radius: 40px;
            font-weight: 700;
            font-size: 0.9rem;
        }
        .link-list {
            background: #f8fafc;
            border: 1px solid #e2e8f0;
            border-radius: 16px;
            padding: 1.2rem 1.8rem;
            margin: 1.2rem 0;
        }
        .link-list a {
            display: inline-block;
            margin: 0.2rem 0.6rem 0.2rem 0;
        }
        .interact-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2.5rem 0;
            background: #f8fafc;
            border-radius: 24px;
            padding: 1.8rem;
        }
        .interact-section .card {
            background: #fff;
            border-radius: 18px;
            padding: 1.2rem 1.5rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .interact-section h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            color: #0b2a41;
        }
        .interact-section form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 0.8rem;
        }
        .interact-section input,
        .interact-section textarea,
        .interact-section select {
            padding: 0.7rem 1rem;
            border: 2px solid #cbd5e1;
            border-radius: 12px;
            font-size: 0.95rem;
            font-family: inherit;
            outline: none;
            transition: border-color 0.2s;
        }
        .interact-section input:focus,
        .interact-section textarea:focus,
        .interact-section select:focus {
            border-color: #e67e22;
        }
        .interact-section textarea {
            min-height: 80px;
            resize: vertical;
        }
        .interact-section .btn-submit {
            background: #0b4a7b;
            color: #fff;
            border: none;
            padding: 0.7rem 1.5rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            align-self: flex-start;
        }
        .interact-section .btn-submit:hover {
            background: #e67e22;
        }
        .rating-stars {
            display: flex;
            gap: 0.4rem;
            font-size: 1.6rem;
            color: #f1c40f;
        }
        footer {
            background: #0b2a41;
            color: #e2e8f0;
            border-radius: 0 0 20px 20px;
            padding: 2rem 1.8rem 1.5rem;
            margin-top: 1rem;
        }
        footer a {
            color: #f9d56e;
        }
        footer a:hover {
            color: #e67e22;
        }
        .footer-flex {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.5rem;
        }
        .footer-col {
            flex: 1 1 200px;
        }
        .footer-col h4 {
            color: #f9d56e;
            margin-top: 0;
            border-left: 3px solid #e67e22;
            padding-left: 0.6rem;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1rem 1.2rem;
            border-radius: 16px;
            margin: 1rem 0;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.8rem 0.2rem 0;
        }
        .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 1.2rem;
            margin-top: 1.2rem;
            text-align: center;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0.6rem 0.8rem 1.2rem;
            }
            header {
                padding: 0.8rem 1rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 0.8rem 0 0.4rem;
                gap: 0.4rem;
            }
            nav.show {
                display: flex;
            }
            nav a {
                width: 100%;
                padding: 0.5rem 0.8rem;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .interact-section {
                grid-template-columns: 1fr;
                padding: 1rem;
            }
            .search-form {
                flex-direction: column;
                align-items: stretch;
            }
            .search-form button {
                justify-content: center;
            }
            .breadcrumb {
                font-size: 0.8rem;
                padding: 0.4rem 0.8rem;
            }
            .footer-flex {
                flex-direction: column;
            }
        }
        @media (min-width: 769px) {
            .hamburger {
                display: none !important;
            }
            nav {
                display: flex !important;
            }
        }
        @media (min-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr 0.45fr;
            }
            .content-grid .main-col {
                grid-column: 1;
            }
            .content-grid .side-col {
                grid-column: 2;
            }
        }
        .badge {
            background: #e67e22;
            color: #fff;
            padding: 0.1rem 0.8rem;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 600;
            display: inline-block;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }
        .last-updated {
            color: #64748b;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            margin: 0.4rem 0 1.2rem;
        }
        .toc {
            background: #f1f5f9;
            border-radius: 18px;
            padding: 1.2rem 1.8rem;
            margin: 1.2rem 0;
        }
        .toc ol {
            margin: 0.4rem 0 0 0;
            columns: 2 240px;
            column-gap: 2rem;
        }
        .toc li a {
            font-weight: 500;
        }
        hr {
            border: none;
            border-top: 2px solid #e2e8f0;
            margin: 2rem 0;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 0.6rem 1rem;
            border: 1px solid #e2e8f0;
            text-align: left;
        }
        th {
            background: #0b2a41;
            color: #f9d56e;
        }
        tr:nth-child(even) {
            background: #f8fafc;
        }