*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
            background: #f4f7fa;
            color: #1e2a3a;
            line-height: 1.75;
            padding: 0 1rem;
            max-width: 1280px;
            margin: 0 auto;
        }
        a {
            color: #0a66c2;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #064079;
            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;
            color: #0b1a2b;
            margin-top: 1.8rem;
            margin-bottom: 0.75rem;
        }
        h1 {
            font-size: 2.4rem;
            margin-top: 0.5rem;
            border-bottom: 4px solid #0a66c2;
            padding-bottom: 0.5rem;
            display: inline-block;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #0a66c2;
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.2rem;
            color: #2c4a6e;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin: 1rem 0 1.5rem 2rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        strong {
            color: #0b1a2b;
        }
        blockquote {
            border-left: 4px solid #0a66c2;
            background: #eaf2fa;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
        }
        hr {
            border: 0;
            height: 2px;
            background: linear-gradient(to right, #0a66c2, transparent);
            margin: 2.5rem 0;
        }
        .schema-hidden {
            display: none;
        }
        header {
            padding: 1.2rem 0 0.5rem;
            border-bottom: 2px solid #dce3ed;
            margin-bottom: 1.2rem;
        }
        .header-top {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0a66c2, #1e88e5);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i {
            -webkit-text-fill-color: initial;
            color: #0a66c2;
            font-size: 2rem;
        }
        .my-logo:hover {
            opacity: 0.85;
            text-decoration: none;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        .nav-links {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 0.2rem 0.1rem;
            margin: 0;
        }
        .nav-links li a {
            display: block;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.95rem;
            color: #1e2a3a;
            transition: background 0.25s, color 0.25s;
        }
        .nav-links li a:hover {
            background: #0a66c2;
            color: #fff;
            text-decoration: none;
        }
        .nav-links li a.active {
            background: #0a66c2;
            color: #fff;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: #0b1a2b;
            padding: 0.2rem 0.5rem;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: #eaf2fa;
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0.6rem 0;
            margin: 0.2rem 0 0.8rem;
            font-size: 0.9rem;
            color: #5a6a7a;
            gap: 0.3rem 0.5rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.5rem;
            color: #9aabbb;
            font-weight: 600;
        }
        .breadcrumb a {
            color: #0a66c2;
        }
        .breadcrumb li:last-child {
            color: #2c4a6e;
            font-weight: 500;
        }
        .search-section {
            background: #eaf2fa;
            border-radius: 16px;
            padding: 1.6rem 2rem;
            margin: 1.8rem 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .search-section label {
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.1rem;
        }
        .search-form {
            display: flex;
            flex: 1 1 280px;
            gap: 0.6rem;
        }
        .search-form input[type="text"] {
            flex: 1;
            padding: 0.7rem 1.2rem;
            border: 2px solid #ccdae8;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
            background: #fff;
        }
        .search-form input[type="text"]:focus {
            border-color: #0a66c2;
        }
        .search-form button {
            background: #0a66c2;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0.7rem 1.8rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #064079;
            transform: scale(1.02);
        }
        .interaction-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2.5rem 0;
            background: #fff;
            border-radius: 20px;
            padding: 2rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
        }
        @media (max-width: 680px) {
            .interaction-panel {
                grid-template-columns: 1fr;
                padding: 1.5rem;
            }
        }
        .interaction-panel h3 {
            margin-top: 0;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .rating-box,
        .comment-box {
            background: #f9fbfd;
            border-radius: 16px;
            padding: 1.5rem;
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.2rem;
            font-size: 2rem;
            margin: 0.8rem 0;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            color: #d0d8e4;
            transition: color 0.2s;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5b342;
        }
        .rating-form button,
        .comment-form button {
            background: #0a66c2;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0.6rem 1.8rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s;
            margin-top: 0.5rem;
        }
        .rating-form button:hover,
        .comment-form button:hover {
            background: #064079;
        }
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 2px solid #ccdae8;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            resize: vertical;
            min-height: 80px;
            outline: none;
            transition: border-color 0.3s;
        }
        .comment-form textarea:focus {
            border-color: #0a66c2;
        }
        .comment-form input[type="text"] {
            width: 100%;
            padding: 0.6rem 1rem;
            border: 2px solid #ccdae8;
            border-radius: 12px;
            font-size: 1rem;
            margin-bottom: 0.7rem;
            outline: none;
        }
        .comment-form input[type="text"]:focus {
            border-color: #0a66c2;
        }
        .last-updated {
            font-size: 0.9rem;
            color: #5a6a7a;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin: 1.2rem 0 0.4rem;
            padding: 0.3rem 0;
        }
        .last-updated i {
            color: #0a66c2;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2.5rem;
            margin: 1.5rem 0;
        }
        @media (max-width: 860px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .content-main {
            min-width: 0;
        }
        .content-sidebar {
            background: #f9fbfd;
            border-radius: 20px;
            padding: 1.8rem 1.5rem;
            align-self: start;
            position: sticky;
            top: 1.5rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .content-sidebar h3 {
            margin-top: 0;
            font-size: 1.2rem;
            border-bottom: 2px solid #dce3ed;
            padding-bottom: 0.6rem;
        }
        .sidebar-links {
            list-style: none;
            margin: 0.8rem 0 0;
        }
        .sidebar-links li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #ecf0f5;
        }
        .sidebar-links li a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 500;
        }
        .sidebar-links li a i {
            color: #0a66c2;
            width: 1.2rem;
        }
        .feature-image {
            margin: 2rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            background: #eaf2fa;
            padding: 4px;
        }
        .feature-image img {
            width: 100%;
            border-radius: 12px;
        }
        .feature-image figcaption {
            font-size: 0.85rem;
            color: #5a6a7a;
            text-align: center;
            padding: 0.6rem 0 0.2rem;
        }
        footer {
            margin-top: 3rem;
            padding: 2rem 0 1.5rem;
            border-top: 2px solid #dce3ed;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.5rem;
        }
        friend-link {
            display: block;
            background: #eaf2fa;
            border-radius: 16px;
            padding: 1.2rem 1.8rem;
            margin: 1rem 0;
            font-weight: 500;
        }
        friend-link a {
            margin: 0 0.8rem 0 0;
            display: inline-block;
            padding: 0.2rem 0;
        }
        .copyright {
            text-align: center;
            color: #5a6a7a;
            font-size: 0.9rem;
            padding-top: 1.2rem;
            border-top: 1px solid #ecf0f5;
            margin-top: 1.2rem;
        }
        @media (max-width: 768px) {
            body {
                padding: 0 0.8rem;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                background: #fff;
                position: absolute;
                top: 70px;
                left: 1rem;
                right: 1rem;
                border-radius: 16px;
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
                padding: 1rem 0.5rem;
                z-index: 100;
                border: 1px solid #eaf2fa;
            }
            .nav-links li a {
                padding: 0.7rem 1.2rem;
                border-radius: 12px;
            }
            #nav-toggle:checked~.nav-links {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            .header-top {
                position: relative;
            }
            .search-section {
                padding: 1.2rem 1.2rem;
                flex-direction: column;
                align-items: stretch;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                justify-content: center;
            }
            .content-sidebar {
                position: static;
            }
            .interaction-panel {
                padding: 1.2rem;
            }
            .star-rating {
                font-size: 1.6rem;
            }
            footer .footer-content {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            friend-link a {
                margin: 0.2rem 0.6rem;
            }
        }
        @media (max-width: 480px) {
            h1 {
                font-size: 1.6rem;
            }
            .my-logo {
                font-size: 1.5rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
        }
        .emoji-big {
            font-size: 1.3em;
        }
        .highlight-box {
            background: #e8f0fe;
            border-radius: 16px;
            padding: 1.2rem 1.8rem;
            margin: 1.8rem 0;
            border-left: 5px solid #0a66c2;
        }
        .tip-icon {
            color: #0a66c2;
        }
        .text-small {
            font-size: 0.9rem;
        }
        .flex-center {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .mt-1 {
            margin-top: 1rem;
        }
        .mb-1 {
            margin-bottom: 1rem;
        }
        .hover-card {
            transition: transform 0.2s, box-shadow 0.25s;
        }
        .hover-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .data-table th {
            background: #0a66c2;
            color: #fff;
            padding: 0.8rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid #ecf0f5;
        }
        .data-table tr:last-child td {
            border-bottom: none;
        }
        .data-table tr:hover td {
            background: #f4f8fe;
        }