* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f5f7fa;
            color: #1a1a2e;
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: #0066cc;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #004499;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        header {
            background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
            color: #fff;
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f7971e, #ffd200);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: inline-block;
        }
        .my-logo small {
            font-size: 0.9rem;
            font-weight: 400;
            -webkit-text-fill-color: #aaa;
            color: #aaa;
            letter-spacing: 1px;
        }
        .my-logo a {
            color: inherit;
            text-decoration: none;
        }
        .my-logo a:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .nav-menu {
            display: flex;
            gap: 1.8rem;
            list-style: none;
            align-items: center;
        }
        .nav-menu a {
            color: #ddd;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.4rem 0;
            border-bottom: 2px solid transparent;
            transition: all 0.2s;
        }
        .nav-menu a:hover {
            color: #ffd200;
            border-bottom-color: #ffd200;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
        }
        .breadcrumb-wrap {
            background: #eef0f5;
            padding: 0.6rem 2rem;
            font-size: 0.85rem;
            border-bottom: 1px solid #dce1e8;
        }
        .breadcrumb-wrap ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0.8rem;
            max-width: 1280px;
            margin: 0 auto;
        }
        .breadcrumb-wrap ol li+li::before {
            content: "›";
            margin-right: 0.8rem;
            color: #888;
        }
        .breadcrumb-wrap a {
            color: #2c3e50;
        }
        .breadcrumb-wrap .current {
            color: #888;
        }
        main {
            max-width: 1280px;
            margin: 0 auto;
            padding: 2rem 1.5rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media (max-width: 900px) {
            main {
                grid-template-columns: 1fr;
                padding: 1.5rem 1rem;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 0.6rem;
                padding: 1rem 0 0.5rem;
            }
            .nav-menu.show {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            header {
                padding: 0.8rem 1rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 480px) {
            .breadcrumb-wrap {
                padding: 0.4rem 1rem;
                font-size: 0.75rem;
            }
            main {
                padding: 1rem 0.8rem;
                gap: 1.5rem;
            }
        }
        .content {
            background: #fff;
            border-radius: 20px;
            padding: 2.5rem 2.8rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
        }
        @media (max-width: 600px) {
            .content {
                padding: 1.5rem 1.2rem;
            }
        }
        .content h1 {
            font-size: 2.6rem;
            line-height: 1.2;
            margin-bottom: 0.5rem;
            color: #0f0c29;
        }
        .content h1 i {
            color: #f7971e;
            margin-right: 0.3rem;
        }
        .content .sub-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 2rem;
            font-size: 0.9rem;
            color: #666;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #eee;
        }
        .content h2 {
            font-size: 1.9rem;
            margin: 2.5rem 0 1rem;
            color: #1a1a2e;
            border-left: 5px solid #f7971e;
            padding-left: 1rem;
        }
        .content h3 {
            font-size: 1.4rem;
            margin: 2rem 0 0.8rem;
            color: #2c3e50;
        }
        .content h4 {
            font-size: 1.15rem;
            margin: 1.5rem 0 0.5rem;
            color: #34495e;
            font-weight: 600;
        }
        .content p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .content ul,
        .content ol {
            margin: 0.8rem 0 1.5rem 1.8rem;
        }
        .content li {
            margin-bottom: 0.4rem;
        }
        .content .highlight-box {
            background: #f0f4ff;
            border-left: 4px solid #f7971e;
            padding: 1.2rem 1.8rem;
            border-radius: 0 12px 12px 0;
            margin: 1.8rem 0;
        }
        .content .highlight-box strong {
            color: #0f0c29;
        }
        .content .pro-tip {
            background: #fff8e1;
            border-radius: 12px;
            padding: 1.2rem 1.8rem;
            margin: 1.8rem 0;
            border: 1px solid #ffe082;
        }
        .content .pro-tip i {
            color: #f7971e;
            margin-right: 0.5rem;
        }
        .content .img-wrapper {
            margin: 2rem 0;
            text-align: center;
        }
        .content .img-wrapper img {
            max-width: 100%;
            border-radius: 16px;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
            margin: 0 auto;
        }
        .content .img-wrapper figcaption {
            margin-top: 0.6rem;
            font-size: 0.85rem;
            color: #888;
            font-style: italic;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem 1.8rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-bottom: 1rem;
            color: #0f0c29;
            border-bottom: 2px solid #f0f0f0;
            padding-bottom: 0.5rem;
        }
        .sidebar-card ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .sidebar-card li {
            margin-bottom: 0.6rem;
        }
        .sidebar-card li a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.3rem 0;
        }
        .sidebar-card li a i {
            color: #f7971e;
            width: 1.2rem;
            text-align: center;
        }
        .search-form {
            display: flex;
            gap: 0.5rem;
            margin-top: 0.5rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid #e0e0e0;
            border-radius: 30px;
            font-size: 0.9rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus {
            border-color: #f7971e;
        }
        .search-form button {
            background: #f7971e;
            border: none;
            color: #fff;
            padding: 0.7rem 1.2rem;
            border-radius: 30px;
            font-size: 0.9rem;
            cursor: pointer;
            transition: background 0.2s;
        }
        .search-form button:hover {
            background: #e08600;
        }
        .user-actions {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.8rem;
            margin: 2.5rem 0 1rem;
            padding-top: 2rem;
            border-top: 2px solid #f0f0f0;
        }
        @media (max-width: 600px) {
            .user-actions {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }
        .user-actions .action-card {
            background: #fafbfc;
            border-radius: 16px;
            padding: 1.5rem 1.8rem;
            border: 1px solid #eef0f5;
        }
        .user-actions .action-card h3 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: #0f0c29;
        }
        .user-actions .action-card label {
            display: block;
            font-weight: 500;
            margin: 0.8rem 0 0.3rem;
            font-size: 0.9rem;
        }
        .user-actions .action-card input,
        .user-actions .action-card textarea {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            font-size: 0.9rem;
            outline: none;
            transition: border 0.2s;
            font-family: inherit;
        }
        .user-actions .action-card input:focus,
        .user-actions .action-card textarea:focus {
            border-color: #f7971e;
        }
        .user-actions .action-card textarea {
            min-height: 80px;
            resize: vertical;
        }
        .user-actions .action-card .btn-submit {
            background: #302b63;
            color: #fff;
            border: none;
            padding: 0.7rem 1.8rem;
            border-radius: 30px;
            font-size: 0.95rem;
            cursor: pointer;
            margin-top: 1rem;
            transition: background 0.2s;
            font-weight: 500;
        }
        .user-actions .action-card .btn-submit:hover {
            background: #0f0c29;
        }
        .star-rating {
            display: flex;
            gap: 0.3rem;
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            margin: 0.5rem 0 0.8rem;
        }
        .star-rating i.active {
            color: #f7971e;
        }
        .star-rating i:hover {
            color: #f9a825;
        }
        friend-link {
            display: block;
            background: #f8f9fc;
            border-radius: 16px;
            padding: 1.5rem 2rem;
            margin-top: 2.5rem;
            border: 1px solid #e8ecf2;
        }
        friend-link h3 {
            font-size: 1.1rem;
            color: #0f0c29;
            margin-bottom: 0.8rem;
        }
        friend-link ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem 1.8rem;
        }
        friend-link li a {
            color: #2c3e50;
            font-size: 0.9rem;
        }
        friend-link li a:hover {
            color: #f7971e;
        }
        footer {
            background: #0f0c29;
            color: #bbb;
            padding: 2rem 2rem 1.5rem;
            margin-top: 2rem;
        }
        footer .footer-inner {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 1.5rem;
        }
        footer .copyright {
            font-size: 0.85rem;
            color: #888;
        }
        footer .copyright strong {
            color: #ddd;
        }
        footer a {
            color: #aaa;
        }
        footer a:hover {
            color: #ffd200;
        }
        .schema-hidden {
            display: none;
        }
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            background: #f7971e;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            transition: all 0.3s;
            opacity: 0;
            visibility: hidden;
            border: none;
            z-index: 99;
        }
        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .scroll-top:hover {
            background: #e08600;
            transform: translateY(-3px);
        }
        @media (max-width: 480px) {
            .content h1 {
                font-size: 1.8rem;
            }
            .content h2 {
                font-size: 1.4rem;
            }
            .content h3 {
                font-size: 1.15rem;
            }
            .user-actions .action-card {
                padding: 1rem 1.2rem;
            }
            friend-link {
                padding: 1rem 1.2rem;
            }
            footer .footer-inner {
                flex-direction: column;
                text-align: center;
            }
        }