*,
        *::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: #f4f7fc;
            color: #1a2634;
            line-height: 1.7;
            padding: 0 16px;
            max-width: 1200px;
            margin: 0 auto;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        a {
            color: #0057b3;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #003d7a;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin-bottom: 1.2rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: #0d1b2a;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
        }
        h1 {
            font-size: 2.4rem;
            border-bottom: 4px solid #0057b3;
            padding-bottom: 0.4rem;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #0057b3;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.35rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.1rem;
            color: #2c4c6e;
        }
        p {
            margin-bottom: 1.2rem;
        }
        strong {
            color: #0b2b44;
        }
        hr {
            border: none;
            border-top: 2px dashed #cbd5e1;
            margin: 2.5rem 0;
        }
        .container {
            background: #ffffff;
            border-radius: 24px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            padding: 24px 28px;
            margin: 24px 0 40px;
        }
        .badge {
            display: inline-block;
            background: #eef2f7;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            color: #1e3a5f;
            font-weight: 600;
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0 8px;
            border-bottom: 1px solid #e2e8f0;
            margin-bottom: 8px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0057b3, #1a7bc7);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            text-decoration: none !important;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none !important;
        }
        .my-logo small {
            font-size: 0.9rem;
            font-weight: 400;
            -webkit-text-fill-color: #4a5b6e;
            color: #4a5b6e;
            background: none;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-links {
            display: flex;
            gap: 8px 16px;
            list-style: none;
            padding: 0;
            margin: 0;
            flex-wrap: wrap;
        }
        .nav-links li a {
            font-weight: 500;
            padding: 6px 12px;
            border-radius: 30px;
            background: transparent;
            transition: background 0.2s, color 0.2s;
            font-size: 0.95rem;
        }
        .nav-links li a:hover {
            background: #e6eff9;
            color: #003d7a;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: #1a2634;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #e6eff9;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 8px 0 12px;
            margin: 0;
            font-size: 0.9rem;
            color: #5a6b7c;
        }
        .breadcrumb li+li::before {
            content: "›";
            padding: 0 10px;
            color: #9aa9b9;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #0057b3;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-wrap {
            display: flex;
            gap: 6px;
            max-width: 480px;
            margin: 20px 0 24px;
            flex-wrap: wrap;
        }
        .search-wrap input {
            flex: 1;
            min-width: 180px;
            padding: 12px 18px;
            border: 2px solid #dce3ed;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s, box-shadow 0.2s;
            background: #fafcff;
        }
        .search-wrap input:focus {
            border-color: #0057b3;
            box-shadow: 0 0 0 4px rgba(0, 87, 179, 0.1);
        }
        .search-wrap button {
            padding: 12px 24px;
            background: #0057b3;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
        }
        .search-wrap button:hover {
            background: #003d7a;
            transform: scale(1.02);
        }
        .interact-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 30px;
            background: #f0f5fe;
            padding: 20px 24px;
            border-radius: 20px;
            margin: 30px 0 20px;
            align-items: flex-start;
        }
        .rating-box,
        .comment-box {
            flex: 1 1 220px;
        }
        .rating-box label {
            font-weight: 600;
            display: block;
            margin-bottom: 6px;
        }
        .star-group {
            display: flex;
            gap: 4px;
            font-size: 1.6rem;
            color: #ffb83b;
            cursor: pointer;
            flex-wrap: wrap;
        }
        .star-group i {
            transition: transform 0.15s, color 0.2s;
        }
        .star-group i:hover {
            transform: scale(1.25);
            color: #f59e0b;
        }
        .rating-box input[type="number"] {
            width: 80px;
            padding: 6px 10px;
            border: 2px solid #dce3ed;
            border-radius: 20px;
            font-size: 0.95rem;
            margin-top: 4px;
        }
        .rating-box .score-btn {
            padding: 6px 18px;
            background: #0057b3;
            color: #fff;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            margin-left: 8px;
            transition: background 0.2s;
        }
        .rating-box .score-btn:hover {
            background: #003d7a;
        }
        .comment-box textarea {
            width: 100%;
            padding: 10px 14px;
            border: 2px solid #dce3ed;
            border-radius: 16px;
            font-size: 0.95rem;
            resize: vertical;
            font-family: inherit;
            background: #fafcff;
            transition: border 0.2s;
        }
        .comment-box textarea:focus {
            border-color: #0057b3;
            outline: none;
        }
        .comment-box .comment-btn {
            padding: 8px 20px;
            background: #0057b3;
            color: #fff;
            border: none;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            margin-top: 6px;
            transition: background 0.2s;
        }
        .comment-box .comment-btn:hover {
            background: #003d7a;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.5rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            background: #fafcff;
            border-radius: 16px;
            overflow: hidden;
        }
        th,
        td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid #e2e8f0;
        }
        th {
            background: #e6eff9;
            font-weight: 700;
            color: #0d1b2a;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f2f6fd;
        }
        footer {
            border-top: 2px solid #e2e8f0;
            padding: 32px 0 24px;
            margin-top: 40px;
            font-size: 0.95rem;
            color: #3a4b5e;
        }
        friend-link {
            display: block;
            padding: 16px 20px;
            background: #f0f5fe;
            border-radius: 20px;
            margin-bottom: 20px;
            font-weight: 500;
        }
        friend-link a {
            display: inline-block;
            margin: 4px 12px 4px 0;
            padding: 4px 0;
        }
        .copyright {
            text-align: center;
            padding-top: 16px;
            border-top: 1px solid #dce3ed;
            font-size: 0.85rem;
            color: #5a6b7c;
        }
        .copyright strong {
            color: #1a2634;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 10px;
            }
            .container {
                padding: 16px 14px;
                border-radius: 16px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            header {
                flex-wrap: wrap;
                gap: 8px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #ffffff;
                border-radius: 16px;
                padding: 12px 8px;
                box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
                margin-top: 8px;
            }
            .nav-links.open {
                display: flex;
            }
            .hamburger {
                display: inline-block;
            }
            .search-wrap {
                flex-direction: column;
            }
            .search-wrap button {
                width: 100%;
            }
            .interact-grid {
                flex-direction: column;
                padding: 16px;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .breadcrumb li+li::before {
                padding: 0 5px;
            }
            table {
                font-size: 0.85rem;
            }
            th,
            td {
                padding: 8px 10px;
            }
            friend-link {
                padding: 12px 14px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 12px 10px;
            }
            h1 {
                font-size: 1.5rem;
            }
            h2 {
                font-size: 1.25rem;
                padding-left: 0.6rem;
            }
            .my-logo {
                font-size: 1.2rem;
            }
            .star-group {
                font-size: 1.3rem;
            }
        }
        .emoji-lg {
            font-size: 1.3rem;
        }
        .highlight-box {
            background: #f0f5fe;
            border-left: 5px solid #0057b3;
            padding: 16px 20px;
            border-radius: 12px;
            margin: 1.5rem 0;
        }
        .toc {
            background: #f8faff;
            border: 1px solid #dce3ed;
            border-radius: 16px;
            padding: 16px 20px;
            margin: 1.5rem 0;
        }
        .toc ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .toc ul li {
            padding: 4px 0;
        }
        .toc ul li a {
            font-weight: 500;
        }
        .toc ul li a:hover {
            text-decoration: underline;
        }
        .last-updated {
            display: inline-block;
            background: #e6eff9;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #1e3a5f;
            font-weight: 500;
            margin-bottom: 12px;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
            margin: 1.5rem 0;
        }
        .card {
            background: #fafcff;
            border: 1px solid #e2e8f0;
            border-radius: 16px;
            padding: 16px 18px;
            transition: box-shadow 0.2s, transform 0.2s;
        }
        .card:hover {
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
            transform: translateY(-2px);
        }
        .card i {
            color: #0057b3;
            margin-right: 6px;
        }
        .faq-item {
            padding: 12px 0;
            border-bottom: 1px solid #e2e8f0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-item strong {
            display: block;
            font-size: 1.05rem;
            margin-bottom: 4px;
        }
        @media print {
            .search-wrap,
            .interact-grid,
            .hamburger {
                display: none !important;
            }
            .nav-links {
                display: flex !important;
            }
            body {
                background: #fff;
                padding: 0;
            }
            .container {
                box-shadow: none;
                border: 1px solid #ddd;
            }
        }