* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f4f7fa;
            color: #1a1a2e;
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: #e63b3b;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #b71c1c;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            color: #fff;
            padding: 18px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: #ff4040;
            font-size: 32px;
        }
        .my-logo:hover {
            color: #ffcccc;
            text-decoration: none;
        }
        .my-logo span {
            background: #ff4040;
            padding: 2px 10px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-left: 6px;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
        }
        nav a {
            color: #e0e0e0;
            font-weight: 500;
            font-size: 15px;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: all 0.25s;
        }
        nav a:hover {
            color: #fff;
            border-bottom-color: #ff4040;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 28px;
            cursor: pointer;
            padding: 4px 8px;
        }
        #navToggle {
            display: none;
        }
        #navToggle:checked~nav {
            display: flex;
            flex-direction: column;
            width: 100%;
            margin-top: 16px;
            gap: 12px;
            background: #1a1a2e;
            padding: 16px 0;
            border-top: 1px solid #333;
        }
        #navToggle:checked~nav a {
            padding: 8px 16px;
            border-bottom: none;
            border-left: 3px solid transparent;
        }
        #navToggle:checked~nav a:hover {
            border-left-color: #ff4040;
        }
        .breadcrumb {
            background: #fff;
            padding: 12px 0;
            border-bottom: 1px solid #e9ecef;
            font-size: 14px;
            color: #666;
        }
        .breadcrumb a {
            color: #e63b3b;
        }
        .breadcrumb a:hover {
            color: #b71c1c;
        }
        .breadcrumb span {
            color: #999;
        }
        main {
            padding: 40px 0 60px;
        }
        .article-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .article-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: #fff;
            border-radius: 20px;
            padding: 40px 36px;
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.04);
        }
        .article-content h1 {
            font-size: 36px;
            font-weight: 800;
            color: #1a1a2e;
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .article-content h1 i {
            color: #ff4040;
            margin-right: 10px;
        }
        .article-content .meta {
            color: #888;
            font-size: 14px;
            margin-bottom: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            border-bottom: 1px solid #f0f0f0;
            padding-bottom: 16px;
        }
        .article-content .meta i {
            margin-right: 6px;
            color: #e63b3b;
        }
        .article-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: #1a1a2e;
            margin: 40px 0 16px;
            padding-left: 14px;
            border-left: 4px solid #ff4040;
        }
        .article-content h3 {
            font-size: 22px;
            font-weight: 600;
            color: #2d2d44;
            margin: 32px 0 12px;
        }
        .article-content h4 {
            font-size: 18px;
            font-weight: 600;
            color: #3d3d5c;
            margin: 24px 0 8px;
        }
        .article-content p {
            margin-bottom: 18px;
            color: #2d2d44;
        }
        .article-content ul,
        .article-content ol {
            margin: 12px 0 20px 24px;
            color: #2d2d44;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content .highlight-box {
            background: #fef3f3;
            border-left: 4px solid #ff4040;
            padding: 18px 22px;
            border-radius: 8px;
            margin: 24px 0;
        }
        .article-content .highlight-box strong {
            color: #b71c1c;
        }
        .article-content .emoji-big {
            font-size: 28px;
            vertical-align: middle;
            margin-right: 6px;
        }
        .featured-image {
            margin: 28px 0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .featured-image img {
            width: 100%;
            max-height: 460px;
            object-fit: cover;
        }
        .featured-image figcaption {
            background: #f9f9f9;
            padding: 10px 16px;
            font-size: 14px;
            color: #777;
            text-align: center;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 24px 20px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.04);
        }
        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #1a1a2e;
            margin-bottom: 14px;
            border-bottom: 2px solid #ff4040;
            padding-bottom: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card li {
            margin-bottom: 10px;
            padding: 6px 0;
            border-bottom: 1px solid #f0f0f0;
        }
        .sidebar-card li a {
            font-weight: 500;
            display: block;
        }
        .sidebar-card li a:hover {
            padding-left: 4px;
        }
        .sidebar-card li i {
            color: #ff4040;
            width: 20px;
            margin-right: 6px;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin-top: 6px;
        }
        .search-form input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #e0e0e0;
            border-radius: 30px;
            font-size: 14px;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: #ff4040;
        }
        .search-form button {
            background: #ff4040;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 12px 22px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 14px;
        }
        .search-form button:hover {
            background: #b71c1c;
        }
        .comment-section {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 2px solid #f0f0f0;
        }
        .comment-section h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .comment-form textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #e0e0e0;
            border-radius: 12px;
            font-size: 15px;
            min-height: 100px;
            resize: vertical;
            outline: none;
            transition: border 0.2s;
            font-family: inherit;
        }
        .comment-form textarea:focus {
            border-color: #ff4040;
        }
        .comment-form .form-row {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin: 14px 0;
        }
        .comment-form .form-row input {
            flex: 1;
            min-width: 180px;
            padding: 12px 16px;
            border: 2px solid #e0e0e0;
            border-radius: 30px;
            font-size: 14px;
            outline: none;
        }
        .comment-form .form-row input:focus {
            border-color: #ff4040;
        }
        .comment-form .btn-submit {
            background: #1a1a2e;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 12px 32px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 15px;
        }
        .comment-form .btn-submit:hover {
            background: #ff4040;
        }
        .rating-section {
            margin-top: 28px;
            padding: 20px 24px;
            background: #fafafa;
            border-radius: 16px;
        }
        .rating-section h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 28px;
            color: #ddd;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            transition: color 0.15s;
            color: #ddd;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f5a623;
        }
        .rating-form .btn-rate {
            background: #f5a623;
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 10px 28px;
            font-weight: 600;
            cursor: pointer;
            margin-top: 10px;
            transition: background 0.2s;
        }
        .rating-form .btn-rate:hover {
            background: #d4891a;
        }
        footer {
            background: #1a1a2e;
            color: #ccc;
            padding: 40px 0 24px;
            margin-top: 40px;
        }
        footer .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        @media (max-width: 768px) {
            footer .footer-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .article-content {
                padding: 24px 16px;
            }
            .article-content h1 {
                font-size: 26px;
            }
            .article-content h2 {
                font-size: 22px;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
            }
            #navToggle:checked~nav {
                display: flex;
            }
        }
        friend-link {
            display: block;
            margin-top: 12px;
            padding: 12px 0;
            border-top: 1px solid #333;
        }
        friend-link a {
            color: #ff9999;
            display: inline-block;
            margin: 4px 12px 4px 0;
        }
        friend-link a:hover {
            color: #fff;
        }
        footer .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #333;
            margin-top: 28px;
            font-size: 14px;
            color: #888;
        }
        footer .logo-footer {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
        }
        footer .logo-footer i {
            color: #ff4040;
        }
        @media (max-width: 480px) {
            .article-content h1 {
                font-size: 22px;
            }
            .article-content h2 {
                font-size: 19px;
            }
            .article-content h3 {
                font-size: 17px;
            }
            .container {
                padding: 0 12px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
            .star-rating {
                font-size: 24px;
            }
        }
        .toc {
            background: #f9f9fb;
            border-radius: 12px;
            padding: 18px 22px;
            margin: 24px 0;
        }
        .toc h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .toc ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .toc li {
            padding: 4px 0;
        }
        .toc li a {
            color: #1a1a2e;
            font-weight: 500;
        }
        .toc li a:hover {
            color: #ff4040;
        }
        .btn-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #ff4040;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 4px 16px rgba(255, 64, 64, 0.3);
            transition: all 0.25s;
            z-index: 999;
            border: none;
            cursor: pointer;
        }
        .btn-top:hover {
            background: #b71c1c;
            transform: translateY(-3px);
        }