*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, Arial, sans-serif;
            background: #f8f9fc;
            color: #1a1a2e;
            line-height: 1.7;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #0066cc;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #003d7a;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.3;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
            color: #0d1b2a;
        }
        h1 {
            font-size: 2.2rem;
            border-bottom: 4px solid #ff5722;
            display: inline-block;
            padding-bottom: 0.3rem;
            margin-top: 0.5rem;
        }
        h2 {
            font-size: 1.7rem;
            border-left: 5px solid #ff5722;
            padding-left: 1rem;
            margin-top: 2.5rem;
        }
        h3 {
            font-size: 1.3rem;
            margin-top: 1.8rem;
            color: #1b3a5c;
        }
        h4 {
            font-size: 1.05rem;
            margin-top: 1.2rem;
            color: #2c3e50;
        }
        p {
            margin-bottom: 1.2rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
            color: #fff;
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            text-shadow: 0 0 15px rgba(255, 87, 34, 0.5);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo i {
            color: #ff5722;
            font-size: 2rem;
        }
        .my-logo:hover {
            text-decoration: none;
            color: #ffcc00;
        }
        .my-logo span {
            color: #ffcc00;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .main-nav {
            display: flex;
            gap: 1.2rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .main-nav li a {
            color: #e0e0e0;
            font-weight: 600;
            font-size: 0.92rem;
            padding: 0.4rem 0.2rem;
            border-bottom: 2px solid transparent;
            transition: all 0.25s ease;
        }
        .main-nav li a:hover {
            color: #ffcc00;
            border-bottom-color: #ff5722;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid #ff5722;
            color: #fff;
            font-size: 1.6rem;
            padding: 0.2rem 0.6rem;
            border-radius: 6px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 87, 34, 0.2);
        }
        .breadcrumb {
            background: #e9ecef;
            padding: 0.5rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.4rem;
            color: #888;
        }
        .breadcrumb a {
            color: #0066cc;
        }
        .breadcrumb .current {
            color: #555;
            font-weight: 600;
        }
        .main-content {
            flex: 1;
            padding: 2rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        .article-body {
            background: #fff;
            padding: 2rem 2rem 2.5rem;
            border-radius: 12px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 1.8rem;
        }
        .sidebar-card {
            background: #fff;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
            border: 1px solid #eee;
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-top: 0;
            border-bottom: 2px solid #ff5722;
            padding-bottom: 0.5rem;
            margin-bottom: 1rem;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
        }
        .sidebar-card ul li {
            padding: 0.4rem 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .sidebar-card ul li a {
            font-weight: 500;
        }
        .featured-img-wrap {
            margin: 1.8rem 0 2rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
            background: #1a1a2e;
            text-align: center;
        }
        .featured-img-wrap img {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
        }
        .featured-img-wrap figcaption {
            padding: 0.6rem 1rem;
            font-size: 0.85rem;
            color: #ccc;
            background: #0d1b2a;
        }
        .search-form {
            display: flex;
            gap: 0.4rem;
            margin: 1.2rem 0;
        }
        .search-form input[type="text"] {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid #ddd;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input[type="text"]:focus {
            border-color: #ff5722;
        }
        .search-form button {
            background: #ff5722;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 0.7rem 1.4rem;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.3s;
            font-size: 0.95rem;
        }
        .search-form button:hover {
            background: #e64a19;
        }
        .feedback-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px dashed #ccc;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .comment-area,
        .rating-area {
            background: #f8f9fc;
            padding: 1.5rem;
            border-radius: 12px;
            border: 1px solid #e9ecef;
        }
        .comment-area h3,
        .rating-area h3 {
            margin-top: 0;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .comment-area textarea {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-family: inherit;
            font-size: 0.95rem;
            resize: vertical;
            min-height: 100px;
            transition: border 0.3s;
        }
        .comment-area textarea:focus {
            border-color: #ff5722;
            outline: none;
        }
        .comment-area input[type="text"] {
            width: 100%;
            padding: 0.6rem 0.8rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 0.95rem;
            margin-bottom: 0.8rem;
            transition: border 0.3s;
        }
        .comment-area input[type="text"]:focus {
            border-color: #ff5722;
            outline: none;
        }
        .comment-area .btn-submit,
        .rating-area .btn-submit {
            background: #0066cc;
            color: #fff;
            border: none;
            padding: 0.6rem 1.8rem;
            border-radius: 30px;
            font-weight: 700;
            cursor: pointer;
            transition: background 0.3s;
            font-size: 0.95rem;
            margin-top: 0.5rem;
        }
        .comment-area .btn-submit:hover,
        .rating-area .btn-submit:hover {
            background: #003d7a;
        }
        .stars {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.3rem;
            font-size: 2rem;
            margin: 0.6rem 0 1rem;
        }
        .stars input {
            display: none;
        }
        .stars label {
            color: #ccc;
            cursor: pointer;
            transition: color 0.2s;
        }
        .stars input:checked~label,
        .stars label:hover,
        .stars label:hover~label {
            color: #ffb300;
        }
        friend-link {
            display: block;
            background: #f1f3f5;
            padding: 1.2rem 1.5rem;
            border-radius: 10px;
            margin-top: 0.5rem;
            font-size: 0.9rem;
            border: 1px solid #dee2e6;
        }
        friend-link a {
            display: inline-block;
            margin: 0.2rem 0.6rem 0.2rem 0;
            padding: 0.2rem 0.8rem;
            background: #fff;
            border-radius: 20px;
            border: 1px solid #ddd;
            font-weight: 500;
            transition: all 0.2s;
        }
        friend-link a:hover {
            background: #ff5722;
            color: #fff;
            border-color: #ff5722;
            text-decoration: none;
        }
        .site-footer {
            background: #0d1b2a;
            color: #ccc;
            padding: 2rem 0 1.5rem;
            margin-top: 3rem;
            font-size: 0.9rem;
        }
        .site-footer .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .site-footer .copyright {
            color: #999;
        }
        .site-footer a {
            color: #ffcc00;
        }
        .site-footer a:hover {
            color: #ff5722;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .feedback-section {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-direction: row;
            }
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(15, 12, 41, 0.98);
                padding: 1rem 1.2rem;
                border-radius: 10px;
                margin-top: 0.5rem;
                gap: 0.6rem;
            }
            .main-nav.show {
                display: flex;
            }
            .main-nav li a {
                font-size: 1rem;
                padding: 0.5rem 0;
            }
            .article-body {
                padding: 1.2rem;
            }
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            h3 {
                font-size: 1.1rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 0.8rem;
            }
            .article-body {
                padding: 0.8rem;
            }
            .search-form {
                flex-wrap: wrap;
            }
            .search-form button {
                width: 100%;
                border-radius: 30px;
            }
            .stars {
                font-size: 1.6rem;
            }
        }
        .last-updated {
            display: inline-block;
            background: #e9ecef;
            padding: 0.3rem 1rem;
            border-radius: 30px;
            font-size: 0.8rem;
            color: #555;
            margin-bottom: 1rem;
        }
        .highlight {
            background: #fff3cd;
            padding: 0.1rem 0.3rem;
            border-radius: 4px;
        }
        .btn-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #ff5722;
            color: #fff;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
            transition: all 0.3s;
            z-index: 999;
            border: none;
            cursor: pointer;
            opacity: 0.8;
        }
        .btn-top:hover {
            opacity: 1;
            transform: translateY(-3px);
            background: #e64a19;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.2rem 0;
            font-size: 0.9rem;
        }
        table th,
        table td {
            padding: 0.7rem 0.8rem;
            border: 1px solid #ddd;
            text-align: left;
        }
        table th {
            background: #0d1b2a;
            color: #fff;
            font-weight: 700;
        }
        table tr:nth-child(even) {
            background: #f8f9fc;
        }
        blockquote {
            border-left: 4px solid #ff5722;
            background: #f1f3f5;
            padding: 0.8rem 1.2rem;
            margin: 1.2rem 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: #333;
        }
        .tip-box {
            background: #e8f5e9;
            border-left: 5px solid #2e7d32;
            padding: 1rem 1.2rem;
            border-radius: 0 8px 8px 0;
            margin: 1.2rem 0;
        }
        .tip-box i {
            color: #2e7d32;
            margin-right: 0.5rem;
        }