*,
        *::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, 'Helvetica Neue', Arial, sans-serif;
            background: #f4f7fb;
            color: #1a2634;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #0057a3;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover,
        a:focus {
            color: #003366;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.05);
            border-radius: 24px;
            padding: 1.5rem 2rem 2rem;
            margin-top: 1.5rem;
            margin-bottom: 2rem;
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 1rem;
            border-bottom: 2px solid #e9edf2;
            position: relative;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: #003366;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            color: #f2a900;
            font-size: 2.2rem;
        }
        .my-logo span {
            background: linear-gradient(135deg, #003366, #0057a3);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo small {
            font-size: 0.75rem;
            font-weight: 400;
            color: #5a6a7a;
            -webkit-text-fill-color: #5a6a7a;
            background: none;
            margin-left: 0.3rem;
            letter-spacing: 0.3px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #003366;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #e9edf2;
        }
        .main-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.2rem 1.2rem;
        }
        .main-nav a {
            font-weight: 500;
            color: #1a2634;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
            font-size: 0.95rem;
        }
        .main-nav a:hover {
            border-bottom-color: #f2a900;
            color: #003366;
            text-decoration: none;
        }
        .main-nav a.active {
            border-bottom-color: #0057a3;
            color: #0057a3;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.8rem 0 0.2rem;
            font-size: 0.85rem;
            color: #5a6a7a;
        }
        .breadcrumb li+li::before {
            content: "›";
            padding: 0 0.6rem;
            color: #b0b8c4;
        }
        .breadcrumb a {
            color: #5a6a7a;
        }
        .breadcrumb a:hover {
            color: #0057a3;
        }
        .breadcrumb .current {
            color: #1a2634;
            font-weight: 500;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #003366;
            margin: 1.2rem 0 0.6rem;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #003366;
            margin: 2.4rem 0 1rem;
            padding-bottom: 0.4rem;
            border-bottom: 3px solid #f2a900;
            display: inline-block;
        }
        h3 {
            font-size: 1.45rem;
            font-weight: 600;
            color: #1a3e5c;
            margin: 1.8rem 0 0.8rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #2a4a6a;
            margin: 1.2rem 0 0.5rem;
        }
        p {
            margin-bottom: 1rem;
            color: #2c3a4a;
        }
        .lead {
            font-size: 1.2rem;
            color: #1a2634;
            font-weight: 400;
            border-left: 4px solid #f2a900;
            padding-left: 1.2rem;
            margin: 1.5rem 0;
        }
        .emoji {
            font-style: normal;
        }
        .highlight {
            background: #fff7e0;
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .btn {
            display: inline-block;
            background: #0057a3;
            color: #fff;
            padding: 0.6rem 1.6rem;
            border-radius: 40px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            font-size: 0.95rem;
        }
        .btn:hover {
            background: #003366;
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            border: 2px solid #0057a3;
            color: #0057a3;
        }
        .btn-outline:hover {
            background: #0057a3;
            color: #fff;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.8rem;
            margin: 1.8rem 0;
        }
        .card {
            background: #f8faff;
            border-radius: 16px;
            padding: 1.5rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            transition: transform 0.2s, box-shadow 0.2s;
            border: 1px solid #e9edf2;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.07);
        }
        .card i {
            font-size: 2rem;
            color: #f2a900;
            margin-bottom: 0.6rem;
        }
        .card h4 {
            margin-top: 0;
        }
        .review-box,
        .comment-box,
        .score-box {
            background: #f8faff;
            border-radius: 16px;
            padding: 1.8rem 2rem;
            margin: 2rem 0;
            border: 1px solid #e0e6ed;
        }
        .review-box h3,
        .comment-box h3,
        .score-box h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #1a3e5c;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dce2ea;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            transition: border-color 0.2s;
            background: #fff;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #0057a3;
            outline: none;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .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: 2rem;
            color: #dce2ea;
            cursor: pointer;
            transition: color 0.15s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f2a900;
        }
        .friend-link {
            display: block;
            margin: 2rem 0 1rem;
            padding: 1.8rem 2rem;
            background: #f0f4fa;
            border-radius: 16px;
            border: 1px solid #dce2ea;
        }
        .friend-link h3 {
            margin-top: 0;
            font-size: 1.2rem;
            color: #1a3e5c;
        }
        .friend-link ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem 2rem;
            padding: 0.5rem 0 0;
        }
        .friend-link a {
            font-weight: 500;
        }
        .site-footer {
            margin-top: 2.5rem;
            padding-top: 1.8rem;
            border-top: 2px solid #e9edf2;
            text-align: center;
            color: #5a6a7a;
            font-size: 0.9rem;
        }
        .site-footer .copyright {
            margin-top: 0.8rem;
            font-size: 0.85rem;
        }
        .last-updated {
            display: inline-block;
            background: #eef3f8;
            padding: 0.2rem 1rem;
            border-radius: 40px;
            font-size: 0.85rem;
            color: #2a4a6a;
            margin: 1rem 0 0.5rem;
        }
        .toc {
            background: #f8faff;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin: 1.5rem 0 2rem;
            border: 1px solid #e0e6ed;
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ul {
            columns: 2 220px;
            list-style: none;
            padding-left: 0;
        }
        .toc li {
            padding: 0.2rem 0;
        }
        .toc a {
            font-weight: 500;
        }
        .inline-img {
            margin: 2rem 0;
            border-radius: 16px;
            background: #f0f4fa;
            padding: 1rem;
        }
        .inline-img figure {
            margin: 0;
        }
        .inline-img figcaption {
            text-align: center;
            font-size: 0.9rem;
            color: #5a6a7a;
            margin-top: 0.6rem;
            font-style: italic;
        }
        .search-wrap {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
            margin: 1.2rem 0;
        }
        .search-wrap input {
            flex: 1;
            min-width: 200px;
            padding: 0.7rem 1.2rem;
            border: 2px solid #dce2ea;
            border-radius: 40px;
            font-size: 1rem;
        }
        .search-wrap input:focus {
            border-color: #0057a3;
            outline: none;
        }
        .search-wrap button {
            border-radius: 40px;
            padding: 0.7rem 1.8rem;
        }
        .badge {
            display: inline-block;
            background: #f2a900;
            color: #003366;
            font-weight: 700;
            padding: 0.15rem 0.8rem;
            border-radius: 40px;
            font-size: 0.75rem;
            letter-spacing: 0.3px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1.2rem;
            margin: 1.5rem 0;
        }
        .stat-item {
            background: #ffffff;
            border-radius: 12px;
            padding: 1.2rem;
            text-align: center;
            border: 1px solid #e9edf2;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
        }
        .stat-item .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #003366;
        }
        .stat-item .label {
            color: #5a6a7a;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .container {
                padding: 1rem 1.2rem;
                border-radius: 16px;
                margin-top: 0.8rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .site-header {
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
                order: 2;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                order: 3;
                padding: 1rem 0 0.5rem;
                gap: 0.3rem;
                border-top: 1px solid #e9edf2;
                margin-top: 0.8rem;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 0.6rem 0.5rem;
                border-bottom: none;
                font-size: 1rem;
            }
            .main-nav a:hover {
                border-bottom: none;
                background: #f0f4fa;
                border-radius: 8px;
            }
            .toc ul {
                columns: 1;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .my-logo i {
                font-size: 1.6rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .review-box,
            .comment-box,
            .score-box {
                padding: 1.2rem;
            }
            .friend-link ul {
                flex-direction: column;
                gap: 0.4rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0.8rem 0.8rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .search-wrap {
                flex-direction: column;
            }
            .search-wrap input {
                min-width: unset;
            }
        }
        .skip-link {
            position: absolute;
            top: -100%;
            left: 0;
            background: #003366;
            color: #fff;
            padding: 0.5rem 1rem;
            z-index: 100;
        }
        .skip-link:focus {
            top: 0;
        }
        .success-msg {
            background: #dff0d8;
            color: #2d6a2d;
            padding: 0.6rem 1.2rem;
            border-radius: 10px;
            margin: 0.5rem 0;
            display: none;
        }
        .success-msg.show {
            display: block;
        }
        .error-msg {
            background: #f8d7da;
            color: #a13a3a;
            padding: 0.6rem 1.2rem;
            border-radius: 10px;
            margin: 0.5rem 0;
            display: none;
        }
        .error-msg.show {
            display: block;
        }
        q {
            font-style: italic;
            color: #2a4a6a;
            background: #f4f7fb;
            padding: 0.1rem 0.4rem;
            border-radius: 4px;
        }
        blockquote {
            border-left: 4px solid #f2a900;
            padding: 0.8rem 1.2rem;
            margin: 1.2rem 0;
            background: #fafbfc;
            border-radius: 0 12px 12px 0;
        }
        blockquote footer {
            font-size: 0.85rem;
            color: #5a6a7a;
            margin-top: 0.4rem;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid #e9edf2;
            text-align: left;
        }
        th {
            background: #f0f4fa;
            font-weight: 600;
            color: #003366;
        }
        tr:hover td {
            background: #f8faff;
        }
        .tag {
            display: inline-block;
            background: #e9edf2;
            padding: 0.1rem 0.8rem;
            border-radius: 40px;
            font-size: 0.8rem;
            color: #1a3e5c;
            margin: 0.1rem 0.2rem;
        }