*,
        *::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, sans-serif;
            background: #f4f7fb;
            color: #1a2634;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        a {
            color: #0a66c2;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #06407a;
            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: #0b1a2b;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
        }
        h1 {
            font-size: 2.4rem;
            border-bottom: 4px solid #ff9933;
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 5px solid #138808;
            padding-left: 1rem;
            margin-top: 2.8rem;
        }
        h3 {
            font-size: 1.4rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.15rem;
            color: #2c4c6b;
            font-style: italic;
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
        }
        strong,
        b {
            color: #0b2a41;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #0f2b46, #1a3d5e);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #fff;
            background: linear-gradient(45deg, #ff9933, #fff, #138808);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 1px;
            text-shadow: 0 2px 8px rgba(255, 153, 51, 0.3);
            display: inline-block;
            padding: 0.2rem 0;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.92;
        }
        .my-logo small {
            font-size: 0.7rem;
            display: block;
            -webkit-text-fill-color: #aac9f0;
            color: #aac9f0;
            letter-spacing: 2px;
            font-weight: 400;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 0.3rem;
            flex-wrap: wrap;
        }
        .nav-bar a {
            color: #e0edff;
            padding: 0.5rem 0.9rem;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.9rem;
            transition: background 0.25s, color 0.25s;
        }
        .nav-bar a:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            text-decoration: none;
        }
        .nav-bar a.active {
            background: #ff9933;
            color: #0b1a2b;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            color: #fff;
            cursor: pointer;
            background: none;
            border: none;
            padding: 0.2rem 0.5rem;
        }
        #nav-toggle {
            display: none;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 0.6rem 0;
            font-size: 0.9rem;
            color: #3a4a5a;
            border-bottom: 1px solid #d0d9e2;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
            gap: 0.3rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.4rem;
            color: #7a8a9a;
        }
        .breadcrumb a {
            color: #0a66c2;
        }
        .breadcrumb .current {
            color: #1a2634;
            font-weight: 600;
        }
        .main-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.2rem 0 3rem;
        }
        .content-area {
            background: #fff;
            border-radius: 20px;
            padding: 2rem 2.2rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
        }
        .sidebar {
            background: #fff;
            border-radius: 20px;
            padding: 1.6rem 1.4rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04);
            align-self: start;
            position: sticky;
            top: 90px;
        }
        .sidebar h3 {
            font-size: 1.2rem;
            margin-top: 0;
            border-bottom: 2px solid #ff9933;
            padding-bottom: 0.5rem;
            margin-bottom: 1rem;
        }
        .sidebar ul {
            list-style: none;
            padding: 0;
        }
        .sidebar li {
            margin-bottom: 0.7rem;
            border-bottom: 1px solid #edf0f4;
            padding-bottom: 0.5rem;
        }
        .sidebar a {
            font-weight: 500;
            display: block;
            padding: 0.2rem 0;
        }
        .search-box {
            display: flex;
            margin: 1.5rem 0 2rem;
            max-width: 100%;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
        }
        .search-box input {
            flex: 1;
            padding: 0.9rem 1.4rem;
            border: 1px solid #d0d9e2;
            border-right: none;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
            background: #f9fafc;
            transition: background 0.2s;
        }
        .search-box input:focus {
            background: #fff;
            border-color: #0a66c2;
        }
        .search-box button {
            background: #0a66c2;
            color: #fff;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 50px 50px 0;
            font-size: 1.1rem;
            cursor: pointer;
            transition: background 0.25s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-box button:hover {
            background: #06407a;
        }
        .featured-image {
            margin: 1.8rem 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
        }
        .featured-image figcaption {
            background: #f0f4fa;
            padding: 0.6rem 1rem;
            font-size: 0.9rem;
            color: #3a4a5a;
            text-align: center;
            font-style: italic;
        }
        .rating-area,
        .comment-area {
            background: #f8faff;
            border-radius: 16px;
            padding: 1.8rem;
            margin: 2rem 0;
            border: 1px solid #e2eaf2;
        }
        .rating-area h3,
        .comment-area h3 {
            margin-top: 0;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
            margin: 0.6rem 0 1rem;
        }
        .star-rating i {
            transition: color 0.2s, transform 0.15s;
        }
        .star-rating i:hover,
        .star-rating i.active {
            color: #ff9933;
            transform: scale(1.15);
        }
        .rating-area form,
        .comment-area form {
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
        }
        .rating-area input,
        .comment-area input,
        .comment-area textarea {
            padding: 0.8rem 1rem;
            border: 1px solid #cbd5e1;
            border-radius: 10px;
            font-size: 1rem;
            font-family: inherit;
            outline: none;
            transition: border 0.2s;
        }
        .rating-area input:focus,
        .comment-area input:focus,
        .comment-area textarea:focus {
            border-color: #0a66c2;
        }
        .comment-area textarea {
            min-height: 100px;
            resize: vertical;
        }
        .btn {
            background: #0a66c2;
            color: #fff;
            border: none;
            padding: 0.8rem 1.8rem;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s, transform 0.1s;
            align-self: flex-start;
        }
        .btn:hover {
            background: #06407a;
            transform: scale(1.02);
        }
        .btn-success {
            background: #138808;
        }
        .btn-success:hover {
            background: #0d5e05;
        }
        .site-footer {
            background: #0b1a2b;
            color: #c8d6e5;
            padding: 2.2rem 0 1.8rem;
            margin-top: 2.5rem;
            border-top: 4px solid #ff9933;
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
        }
        .footer-inner h4 {
            color: #fff;
            margin-top: 0;
            font-size: 1.1rem;
        }
        .footer-inner a {
            color: #aac9f0;
        }
        .footer-inner a:hover {
            color: #fff;
        }
        friend-link {
            display: block;
            background: #11243a;
            padding: 1.2rem 1.5rem;
            border-radius: 14px;
            margin: 1.5rem 0 1rem;
            color: #c8d6e5;
            font-size: 0.95rem;
        }
        friend-link a {
            display: inline-block;
            margin: 0.3rem 1rem 0.3rem 0;
            padding: 0.2rem 0.6rem;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 20px;
            font-size: 0.9rem;
        }
        friend-link a:hover {
            background: rgba(255, 255, 255, 0.14);
            text-decoration: none;
        }
        .copyright {
            text-align: center;
            padding-top: 1.8rem;
            border-top: 1px solid #1f3a55;
            margin-top: 1.8rem;
            font-size: 0.9rem;
            color: #8a9bb0;
        }
        .copyright strong {
            color: #d4e2f5;
        }
        .update-time {
            display: inline-block;
            background: #eef3f9;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #2a4a6a;
            margin-bottom: 1.4rem;
            border: 1px solid #d5e0ec;
        }
        .update-time i {
            margin-right: 0.4rem;
            color: #0a66c2;
        }
        @media (max-width: 992px) {
            .main-wrapper {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .sidebar {
                position: static;
                order: 2;
            }
            .content-area {
                order: 1;
            }
            .footer-inner {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            .nav-bar {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #0f2b46;
                padding: 1rem 0;
                border-radius: 0 0 16px 16px;
                margin-top: 0.6rem;
                gap: 0.2rem;
            }
            .nav-bar a {
                padding: 0.6rem 1.2rem;
                width: 100%;
                border-radius: 0;
            }
            #nav-toggle:checked~.nav-bar {
                display: flex;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .content-area {
                padding: 1.2rem 1rem;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .search-box {
                flex-direction: column;
                border-radius: 20px;
            }
            .search-box input {
                border-radius: 20px 20px 0 0;
                border-right: 1px solid #d0d9e2;
            }
            .search-box button {
                border-radius: 0 0 20px 20px;
                justify-content: center;
                padding: 0.8rem;
            }
            .star-rating {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            h1 {
                font-size: 1.5rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }
        .highlight-box {
            background: #f0f7ff;
            border-left: 5px solid #0a66c2;
            padding: 1.2rem 1.6rem;
            border-radius: 0 14px 14px 0;
            margin: 1.4rem 0;
        }
        .highlight-box.green {
            border-left-color: #138808;
            background: #f0faf0;
        }
        .highlight-box.orange {
            border-left-color: #ff9933;
            background: #fff8f0;
        }
        .emoji-lg {
            font-size: 1.4rem;
            margin-right: 0.3rem;
        }
        .inline-code {
            background: #eef3f9;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            font-family: 'Courier New', monospace;
            font-size: 0.9rem;
            color: #0b2a41;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.4rem 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 0.7rem 0.9rem;
            border: 1px solid #d5e0ec;
            text-align: left;
        }
        th {
            background: #e9f0f8;
            font-weight: 700;
        }
        tr:nth-child(even) {
            background: #f8faff;
        }
        .schema-hidden {
            display: none;
        }