*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f4f7fc;
            color: #1a2634;
            line-height: 1.7;
            padding: 0 16px;
        }
        a {
            color: #004d99;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover,
        a:focus {
            color: #cc3300;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 1.6rem;
            margin-bottom: 0.6rem;
            color: #0b1e2e;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4rem;
            border-left: 6px solid #e65c00;
            padding-left: 18px;
        }
        h2 {
            font-size: 1.9rem;
            border-bottom: 2px solid #cfddee;
            padding-bottom: 6px;
        }
        h3 {
            font-size: 1.5rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.2rem;
            color: #2b4a6e;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        ul,
        ol {
            margin: 0 0 1.4rem 2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        strong {
            color: #b34100;
        }
        em {
            color: #1f5c8a;
        }
        hr {
            border: none;
            border-top: 2px dashed #bcc9db;
            margin: 2.2rem 0;
        }
        .container {
            max-width: 1220px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            border-radius: 28px;
            padding: 20px 30px 30px;
            margin-top: 18px;
            margin-bottom: 40px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 12px 14px 20px;
                border-radius: 18px;
            }
            h1 {
                font-size: 1.8rem;
                padding-left: 12px;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.25rem;
            }
            body {
                padding: 0 8px;
            }
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0 16px;
            border-bottom: 2px solid #e2ebf3;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(145deg, #003b6f, #005c99);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none !important;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #e65c00;
            font-size: 2rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none !important;
        }
        .my-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            -webkit-text-fill-color: initial;
            color: #4e6b7f;
            letter-spacing: 0.2px;
            margin-left: 4px;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.9rem;
            color: #003b6f;
            cursor: pointer;
            padding: 4px 10px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #e8f0f8;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            align-items: center;
        }
        .main-nav a {
            font-weight: 600;
            font-size: 0.98rem;
            padding: 6px 6px;
            border-radius: 6px;
            transition: background 0.2s, color 0.2s;
            color: #1f3a57;
        }
        .main-nav a:hover {
            background: #e1edf9;
            color: #cc3300;
            text-decoration: none;
        }
        .main-nav a i {
            margin-right: 5px;
            color: #e65c00;
        }
        #nav-toggle {
            display: none;
        }
        #nav-toggle:checked~.main-nav {
            display: flex;
            flex-direction: column;
            width: 100%;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid #d0dfee;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: inline-block;
            }
            .main-nav {
                display: none;
                width: 100%;
                gap: 6px 0;
            }
            .main-nav a {
                padding: 10px 12px;
                font-size: 1.05rem;
                border-radius: 8px;
                width: 100%;
            }
            #nav-toggle:checked~.main-nav {
                display: flex;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 12px 0 6px;
            margin: 0 0 12px 0;
            font-size: 0.92rem;
            color: #4b637a;
        }
        .breadcrumb li {
            margin: 0 4px 0 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 10px 0 6px;
            color: #8aa0b7;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #1f5c8a;
        }
        .breadcrumb .active {
            color: #b34100;
            font-weight: 600;
        }
        .search-block {
            background: #eaf1fa;
            border-radius: 60px;
            padding: 6px 6px 6px 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            max-width: 580px;
            margin: 20px 0 24px;
            border: 1px solid #cbdae9;
            transition: box-shadow 0.3s;
        }
        .search-block:focus-within {
            box-shadow: 0 0 0 3px rgba(0, 92, 153, 0.2);
            border-color: #005c99;
        }
        .search-block input {
            flex: 1;
            min-width: 120px;
            border: none;
            background: transparent;
            padding: 12px 8px 12px 0;
            font-size: 1rem;
            outline: none;
            color: #1a2634;
        }
        .search-block input::placeholder {
            color: #6e8aa3;
        }
        .search-block button {
            background: #005c99;
            border: none;
            color: #fff;
            font-weight: 700;
            padding: 10px 26px;
            border-radius: 60px;
            cursor: pointer;
            font-size: 0.98rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: background 0.25s, transform 0.15s;
        }
        .search-block button:hover {
            background: #003b6f;
            transform: scale(1.02);
        }
        @media (max-width: 460px) {
            .search-block {
                border-radius: 30px;
                padding: 6px 6px 6px 14px;
            }
            .search-block button {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
        }
        .feature-img {
            margin: 24px 0 28px;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
            background: #e9f0f7;
        }
        .feature-img img {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
        }
        .feature-img figcaption {
            padding: 10px 18px;
            font-size: 0.92rem;
            color: #3b5a77;
            background: #f0f6fd;
            font-style: italic;
        }
        .grid-2,
        .grid-3 {
            display: grid;
            gap: 24px;
            margin: 20px 0 28px;
        }
        .grid-2 {
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        }
        .grid-3 {
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        }
        .card {
            background: #f8fbfe;
            border-radius: 18px;
            padding: 20px 20px 24px;
            border: 1px solid #e3edf7;
            transition: transform 0.2s, box-shadow 0.25s;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 28px rgba(0, 60, 110, 0.08);
        }
        .card i {
            font-size: 2rem;
            color: #e65c00;
            margin-bottom: 10px;
        }
        .card h3 {
            margin-top: 0.2rem;
        }
        .interaction-area {
            background: #f2f7fd;
            border-radius: 24px;
            padding: 24px 26px 30px;
            margin: 32px 0 20px;
            border: 1px solid #d6e3f2;
        }
        .interaction-area h2 {
            border-bottom: none;
            margin-top: 0;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin: 16px 0 12px;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 12px 16px;
            border: 1px solid #c4d5e8;
            border-radius: 14px;
            font-size: 1rem;
            background: #fff;
            transition: border-color 0.2s;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #005c99;
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 92, 153, 0.15);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: #005c99;
            border: none;
            color: #fff;
            font-weight: 700;
            padding: 12px 32px;
            border-radius: 60px;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.15s;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            width: fit-content;
        }
        .btn:hover {
            background: #003b6f;
            transform: scale(1.02);
        }
        .btn-secondary {
            background: #e65c00;
        }
        .btn-secondary:hover {
            background: #b34100;
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #cfd8e4;
            cursor: pointer;
            margin: 6px 0 10px;
            flex-wrap: wrap;
        }
        .rating-stars i {
            transition: color 0.2s, transform 0.15s;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #f5a623;
            transform: scale(1.1);
        }
        .rating-stars i.selected {
            color: #f5a623;
        }
        .site-footer {
            margin-top: 40px;
            padding: 32px 0 16px;
            border-top: 2px solid #dde7f2;
            font-size: 0.95rem;
            color: #2f4a64;
        }
        .site-footer .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 24px 30px;
        }
        friend-link {
            display: block;
            background: #f0f6fd;
            padding: 18px 22px;
            border-radius: 18px;
            margin: 18px 0 14px;
            font-weight: 500;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 16px 4px 0;
            padding: 4px 0;
        }
        .copyright {
            text-align: center;
            padding-top: 18px;
            border-top: 1px solid #d4e0ed;
            margin-top: 18px;
            color: #49657e;
            font-size: 0.9rem;
        }
        .last-updated {
            background: #e8f1fa;
            display: inline-block;
            padding: 4px 16px;
            border-radius: 60px;
            font-size: 0.85rem;
            color: #1f4a6e;
            margin: 6px 0 14px;
        }
        @media (max-width: 480px) {
            .interaction-area {
                padding: 16px 14px 20px;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .rating-stars {
                font-size: 1.5rem;
            }
        }
        .fade-up {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeUp 0.6s ease forwards;
        }
        @keyframes fadeUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .stats-table {
            width: 100%;
            border-collapse: collapse;
            margin: 18px 0 24px;
            font-size: 0.98rem;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .stats-table th {
            background: #003b6f;
            color: #fff;
            padding: 12px 14px;
            text-align: left;
            font-weight: 600;
        }
        .stats-table td {
            padding: 10px 14px;
            border-bottom: 1px solid #e2ecf7;
            background: #fafdff;
        }
        .stats-table tr:hover td {
            background: #eef5fc;
        }
        @media (max-width: 600px) {
            .stats-table {
                font-size: 0.85rem;
            }
            .stats-table th,
            .stats-table td {
                padding: 6px 8px;
            }
        }
        .tag {
            display: inline-block;
            background: #e1edf9;
            color: #003b6f;
            padding: 2px 14px;
            border-radius: 60px;
            font-size: 0.8rem;
            font-weight: 600;
            margin: 2px 4px 2px 0;
        }
        .highlight-box {
            background: #fcf4ea;
            border-left: 5px solid #e65c00;
            padding: 16px 20px;
            border-radius: 0 16px 16px 0;
            margin: 20px 0;
        }
        .flex-between {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }