*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: #f6f9fc;
            color: #1a2634;
            line-height: 1.7;
            padding: 0 16px;
            max-width: 1280px;
            margin: 0 auto;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        a {
            color: #0a558c;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #e67e22;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
            margin: 1rem 0;
        }
        li {
            margin-bottom: 0.4rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            margin-top: 1.8rem;
            margin-bottom: 0.6rem;
            color: #0b2a3c;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.4rem;
            border-bottom: 4px solid #0a558c;
            padding-bottom: 0.4rem;
            display: inline-block;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #e67e22;
            padding-left: 1rem;
            margin-top: 2.8rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #1e4a6b;
            margin-top: 2rem;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #2c5775;
            margin-top: 1.4rem;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.02rem;
            color: #2c3e50;
        }
        .container {
            background: #ffffff;
            border-radius: 24px;
            padding: 20px 24px 32px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
            margin: 16px 0 32px;
        }
        .badge {
            display: inline-block;
            background: #0a558c;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 30px;
            letter-spacing: 0.3px;
            text-transform: uppercase;
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0 8px;
            border-bottom: 1px solid #e2eaf1;
            position: relative;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -1px;
            color: #0b2a3c;
            background: linear-gradient(135deg, #0a558c, #e67e22);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none !important;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none !important;
        }
        .my-logo small {
            font-size: 0.75rem;
            font-weight: 400;
            -webkit-text-fill-color: #5a7a94;
            color: #5a7a94;
            letter-spacing: 0.2px;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 8px 20px;
            flex-wrap: wrap;
        }
        .nav-bar a {
            font-weight: 500;
            font-size: 0.92rem;
            padding: 6px 0;
            color: #1a4a6a;
            position: relative;
        }
        .nav-bar a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: #e67e22;
            transition: width 0.25s ease;
        }
        .nav-bar a:hover::after {
            width: 100%;
        }
        .nav-bar a.active {
            color: #e67e22;
            font-weight: 600;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px 2px;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 3px;
            background: #0b2a3c;
            border-radius: 3px;
            transition: all 0.25s ease;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .nav-mobile {
            display: flex;
            gap: 12px 22px;
            flex-wrap: wrap;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px 10px;
            font-size: 0.82rem;
            padding: 10px 0 4px;
            color: #5f7d98;
        }
        .breadcrumb a {
            color: #0a558c;
        }
        .breadcrumb a:hover {
            color: #e67e22;
        }
        .breadcrumb .sep {
            color: #b0c4d9;
        }
        .search-section {
            background: #eef4f9;
            border-radius: 60px;
            padding: 6px 6px 6px 20px;
            display: flex;
            align-items: center;
            max-width: 500px;
            margin: 20px 0 12px;
            border: 1px solid #d5e2ee;
            transition: box-shadow 0.2s;
        }
        .search-section:focus-within {
            box-shadow: 0 0 0 3px rgba(10, 85, 140, 0.15);
            border-color: #0a558c;
        }
        .search-section input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 10px 6px;
            font-size: 0.95rem;
            outline: none;
            font-family: inherit;
            color: #1a2634;
        }
        .search-section button {
            background: #0a558c;
            border: none;
            color: #fff;
            padding: 10px 22px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 6px;
            font-family: inherit;
        }
        .search-section button:hover {
            background: #e67e22;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.6rem 0;
            border-radius: 14px;
            border: 1px solid #e2eaf1;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            background: #fff;
        }
        th,
        td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid #eaf0f6;
        }
        th {
            background: #eef4f9;
            font-weight: 600;
            color: #0b2a3c;
        }
        tr:last-child td {
            border-bottom: none;
        }
        tr:hover td {
            background: #f6faff;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 2rem 0;
        }
        .card-form {
            background: #f9fcff;
            border-radius: 20px;
            padding: 24px 28px;
            border: 1px solid #e2eaf1;
            transition: box-shadow 0.2s;
        }
        .card-form:hover {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
        }
        .card-form h3 {
            margin-top: 0;
            border-left: none;
            padding-left: 0;
            font-size: 1.3rem;
        }
        .card-form label {
            display: block;
            font-weight: 500;
            margin: 12px 0 4px;
            font-size: 0.92rem;
            color: #1a4a6a;
        }
        .card-form input,
        .card-form textarea,
        .card-form select {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid #d5e2ee;
            border-radius: 12px;
            font-family: inherit;
            font-size: 0.92rem;
            background: #fff;
            transition: border 0.2s, box-shadow 0.2s;
        }
        .card-form input:focus,
        .card-form textarea:focus,
        .card-form select:focus {
            border-color: #0a558c;
            box-shadow: 0 0 0 3px rgba(10, 85, 140, 0.1);
            outline: none;
        }
        .card-form textarea {
            min-height: 90px;
            resize: vertical;
        }
        .card-form .btn-submit {
            background: #0a558c;
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            margin-top: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-family: inherit;
        }
        .card-form .btn-submit:hover {
            background: #e67e22;
            transform: translateY(-1px);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 4px;
            margin: 6px 0 10px;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            font-size: 1.8rem;
            color: #cfddee;
            cursor: pointer;
            transition: color 0.15s;
            margin: 0;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f1c40f;
        }
        friend-link {
            display: block;
            padding: 20px 0 8px;
            border-top: 2px solid #e2eaf1;
            margin-top: 28px;
        }
        friend-link .fl-head {
            font-weight: 600;
            font-size: 1.1rem;
            color: #0b2a3c;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        friend-link .fl-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 18px;
        }
        friend-link .fl-list a {
            font-size: 0.9rem;
            background: #eef4f9;
            padding: 4px 16px;
            border-radius: 30px;
            transition: background 0.2s, color 0.2s;
        }
        friend-link .fl-list a:hover {
            background: #0a558c;
            color: #fff;
            text-decoration: none;
        }
        .site-footer {
            border-top: 1px solid #e2eaf1;
            padding: 20px 0 28px;
            margin-top: 12px;
            font-size: 0.85rem;
            color: #5f7d98;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 10px;
        }
        .site-footer .copyright {
            font-weight: 400;
        }
        .site-footer .copyright strong {
            color: #0b2a3c;
        }
        @media (max-width: 780px) {
            body {
                padding: 0 10px;
            }
            .container {
                padding: 16px 14px 24px;
                border-radius: 18px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .card-form {
                padding: 18px 16px;
            }
            .site-header {
                padding: 10px 0;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .hamburger {
                display: flex;
            }
            .nav-mobile {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 10px 0 6px;
                gap: 6px;
                border-top: 1px solid #e2eaf1;
                margin-top: 8px;
            }
            .nav-mobile.open {
                display: flex;
            }
            .nav-bar a {
                font-size: 0.95rem;
                padding: 8px 0;
            }
            .search-section {
                max-width: 100%;
                border-radius: 40px;
                padding: 4px 4px 4px 16px;
            }
            .search-section button {
                padding: 8px 16px;
                font-size: 0.8rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
                gap: 4px 8px;
            }
            .star-rating label {
                font-size: 1.5rem;
            }
            table {
                font-size: 0.82rem;
            }
            th,
            td {
                padding: 8px 10px;
            }
            .site-footer {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (min-width: 781px) {
            .nav-mobile {
                display: flex !important;
            }
            .hamburger {
                display: none !important;
            }
        }
        .highlight-box {
            background: #e8f3fc;
            border-left: 6px solid #0a558c;
            padding: 16px 22px;
            border-radius: 0 16px 16px 0;
            margin: 1.6rem 0;
        }
        .highlight-box strong {
            color: #0a558c;
        }
        .emoji-big {
            font-size: 1.4rem;
            margin-right: 4px;
        }
        .last-updated {
            display: inline-block;
            background: #edf2f7;
            padding: 2px 14px;
            border-radius: 30px;
            font-size: 0.78rem;
            color: #3d6180;
            margin: 6px 0 14px;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 16px;
            margin: 1.4rem 0;
        }
        .feature-item {
            background: #f6faff;
            padding: 16px 12px;
            border-radius: 16px;
            text-align: center;
            border: 1px solid #eaf0f6;
            font-weight: 500;
            font-size: 0.92rem;
        }
        .feature-item i {
            font-size: 1.8rem;
            color: #0a558c;
            display: block;
            margin-bottom: 6px;
        }
        .toc {
            background: #f1f7fc;
            border-radius: 16px;
            padding: 18px 24px;
            margin: 1.4rem 0 2rem;
            border: 1px solid #dde9f4;
        }
        .toc h3 {
            margin-top: 0;
            border-left: none;
            padding-left: 0;
        }
        .toc ul {
            list-style: none;
            padding-left: 0;
            margin: 8px 0 0;
            columns: 2 220px;
            column-gap: 24px;
        }
        .toc ul li {
            margin-bottom: 6px;
        }
        .toc ul li a {
            font-weight: 500;
        }
        .toc ul li a::before {
            content: "▸ ";
            color: #e67e22;
            font-weight: 700;
        }
        hr {
            border: none;
            border-top: 2px dashed #dce6f0;
            margin: 2.4rem 0;
        }
        .img-caption {
            font-size: 0.82rem;
            color: #5f7d98;
            text-align: center;
            margin-top: 6px;
        }