*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f4f7fb;
            color: #1a2634;
            line-height: 1.7;
            padding: 0 1rem;
        }
        a {
            color: #0066cc;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #003d7a;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        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: #0b1a2e;
            margin-top: 2rem;
            margin-bottom: 0.8rem;
        }
        h1 {
            font-size: 2.4rem;
            border-bottom: 4px solid #2563eb;
            padding-bottom: 0.5rem;
            display: inline-block;
        }
        h2 {
            font-size: 1.9rem;
            border-left: 6px solid #2563eb;
            padding-left: 1rem;
            margin-top: 2.8rem;
        }
        h3 {
            font-size: 1.5rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.2rem;
            color: #2c4a6e;
            font-weight: 600;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        blockquote {
            background: #e9edf4;
            border-left: 6px solid #2563eb;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2c3e50;
        }
        blockquote strong {
            color: #0b1a2e;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            border-radius: 24px;
            padding: 1.5rem 2rem 2rem;
        }
        header {
            padding: 1rem 0 0.5rem;
            border-bottom: 2px solid #e2e8f0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #0b1a2e;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #2563eb, #7c3aed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.9rem;
            font-weight: 400;
            -webkit-text-fill-color: #4a5a72;
            color: #4a5a72;
            background: none;
        }
        .nav-toggle {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: #0b1a2e;
            cursor: pointer;
            padding: 0.3rem 0.6rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: #e2e8f0;
        }
        nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.2rem 1.2rem;
        }
        nav a {
            font-weight: 500;
            color: #1a2634;
            padding: 0.4rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
            font-size: 0.98rem;
        }
        nav a:hover {
            border-bottom-color: #2563eb;
            color: #2563eb;
            text-decoration: none;
        }
        .nav-search-form {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            margin-left: 0.6rem;
        }
        .nav-search-form input {
            padding: 0.4rem 0.8rem;
            border: 1.5px solid #d0d7e2;
            border-radius: 40px;
            font-size: 0.9rem;
            width: 140px;
            transition: border-color 0.2s, width 0.3s;
            background: #f9fafc;
        }
        .nav-search-form input:focus {
            outline: none;
            border-color: #2563eb;
            width: 190px;
        }
        .nav-search-form button {
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0.4rem 1rem;
            font-size: 0.85rem;
            cursor: pointer;
            transition: background 0.2s;
            font-weight: 600;
        }
        .nav-search-form button:hover {
            background: #1d4ed8;
        }
        .breadcrumb {
            padding: 0.8rem 0 0.2rem;
            font-size: 0.88rem;
            color: #4a5a72;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem 0.6rem;
            list-style: none;
        }
        .breadcrumb li {
            display: inline;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #94a3b8;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #1a2634;
            font-weight: 600;
        }
        .hero {
            background: linear-gradient(135deg, #eef2f9, #dce3f0);
            border-radius: 20px;
            padding: 2rem 2.5rem;
            margin: 1.2rem 0 2rem;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 2rem;
        }
        .hero-text {
            flex: 2;
            min-width: 240px;
        }
        .hero-text h1 {
            font-size: 2.6rem;
            margin-top: 0;
            border-bottom: none;
            display: block;
            background: linear-gradient(135deg, #0b1a2e, #2563eb);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-text p {
            font-size: 1.15rem;
            color: #2c4056;
            margin-top: 0.5rem;
        }
        .hero-img {
            flex: 1;
            min-width: 180px;
            border-radius: 16px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }
        .last-updated {
            display: inline-block;
            background: #e9edf4;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #4a5a72;
            margin: 0.5rem 0 1.5rem;
        }
        .last-updated i {
            margin-right: 0.4rem;
            color: #2563eb;
        }
        .section {
            margin: 2.8rem 0;
        }
        .section-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin: 1.5rem 0;
        }
        @media (max-width:720px) {
            .section-grid {
                grid-template-columns: 1fr;
            }
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8rem 0;
            font-size: 0.98rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        .data-table th {
            background: #1e3a5f;
            color: #fff;
            padding: 0.8rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid #e2e8f0;
            background: #fafbfc;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: #eef2f9;
        }
        .form-card {
            background: #f9fafc;
            border: 1px solid #e2e8f0;
            border-radius: 16px;
            padding: 1.6rem 2rem;
            margin: 2rem 0;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
        }
        .form-card h3 {
            margin-top: 0;
            font-size: 1.4rem;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            color: #1e3a5f;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 1.5px solid #d0d7e2;
            border-radius: 10px;
            font-size: 0.98rem;
            transition: border-color 0.2s;
            background: #fff;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #2563eb;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        .form-row .form-group {
            flex: 1;
            min-width: 140px;
        }
        .btn {
            background: #2563eb;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn:hover {
            background: #1d4ed8;
            transform: translateY(-1px);
        }
        .btn-secondary {
            background: #e2e8f0;
            color: #1a2634;
        }
        .btn-secondary:hover {
            background: #cbd5e1;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            font-size: 2rem;
            cursor: pointer;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #d0d7e2;
            transition: color 0.15s;
            cursor: pointer;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f59e0b;
        }
        .star-rating label i {
            font-size: 2rem;
        }
        .comment-item {
            background: #f9fafc;
            border-radius: 12px;
            padding: 1rem 1.5rem;
            margin: 1rem 0;
            border-left: 4px solid #2563eb;
        }
        .comment-item .meta {
            font-size: 0.85rem;
            color: #64748b;
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 0.3rem;
        }
        .comment-item .meta strong {
            color: #1a2634;
        }
        friend-link {
            display: block;
            padding: 1.8rem 0 1rem;
            border-top: 2px solid #e2e8f0;
            margin-top: 2.5rem;
        }
        friend-link h3 {
            margin-top: 0;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.8rem;
        }
        friend-link li {
            margin: 0;
        }
        friend-link a {
            color: #2563eb;
            font-weight: 500;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        footer {
            padding: 1.8rem 0 1.2rem;
            border-top: 2px solid #e2e8f0;
            margin-top: 1.5rem;
            text-align: center;
            color: #4a5a72;
            font-size: 0.92rem;
        }
        footer .copyright {
            font-weight: 500;
            color: #1a2634;
        }
        footer a {
            color: #2563eb;
        }
        @media (max-width:820px) {
            .container {
                padding: 1rem 1.2rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            h3 {
                font-size: 1.3rem;
            }
            .hero {
                padding: 1.5rem;
                flex-direction: column;
            }
            .hero-text h1 {
                font-size: 2.2rem;
            }
            .nav-toggle {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 1rem 0 0.5rem;
                gap: 0.5rem;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 0.5rem 0.8rem;
                border-radius: 8px;
            }
            nav a:hover {
                background: #eef2f9;
                border-bottom-color: transparent;
            }
            .nav-search-form {
                margin-left: 0;
                margin-top: 0.5rem;
                width: 100%;
            }
            .nav-search-form input {
                width: 1fr;
                flex: 1;
            }
            .nav-search-form input:focus {
                width: 1fr;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .form-card {
                padding: 1.2rem 1.2rem;
            }
            .star-rating {
                font-size: 1.6rem;
            }
            .star-rating label i {
                font-size: 1.6rem;
            }
        }
        @media (max-width:480px) {
            body {
                padding: 0 0.4rem;
            }
            .container {
                padding: 0.8rem 0.8rem;
                border-radius: 16px;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.35rem;
                padding-left: 0.6rem;
            }
            h3 {
                font-size: 1.15rem;
            }
            .hero-text h1 {
                font-size: 1.8rem;
            }
            .hero {
                padding: 1rem;
            }
            .data-table {
                font-size: 0.82rem;
            }
            .data-table th,
            .data-table td {
                padding: 0.5rem 0.6rem;
            }
            .form-row {
                flex-direction: column;
                gap: 0.2rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }
        .highlight-box {
            background: #eef2f9;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin: 1.8rem 0;
            border: 1px solid #dce3f0;
        }
        .highlight-box h4 {
            margin-top: 0;
        }
        .tag {
            display: inline-block;
            background: #dce3f0;
            padding: 0.15rem 0.8rem;
            border-radius: 30px;
            font-size: 0.8rem;
            color: #1e3a5f;
            font-weight: 500;
        }
        .emoji-lg {
            font-size: 1.4rem;
        }
        .flex-center {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
        }
        .gap-2 {
            gap: 2rem;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .text-muted {
            color: #64748b;
        }
        .fw-600 {
            font-weight: 600;
        }