* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.8;
            color: #1a1a2e;
            background: #f8f9fa;
            padding: 0;
            margin: 0;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1d4ed8;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #fff;
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fbbf24;
            letter-spacing: -0.5px;
            text-transform: uppercase;
            text-decoration: none;
            background: rgba(255, 255, 255, 0.05);
            padding: 6px 16px;
            border-radius: 8px;
            border: 1px solid rgba(251, 191, 36, 0.2);
            transition: all 0.3s;
        }
        .my-logo:hover {
            background: rgba(251, 191, 36, 0.15);
            border-color: #fbbf24;
            text-decoration: none;
        }
        .my-logo span {
            color: #fff;
            font-weight: 300;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        nav a {
            color: #e2e8f0;
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.2s;
        }
        nav a:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fbbf24;
            text-decoration: none;
        }
        .nav-active {
            background: rgba(251, 191, 36, 0.15);
            color: #fbbf24;
        }
        .breadcrumb {
            background: #fff;
            padding: 12px 0;
            border-bottom: 1px solid #e2e8f0;
            font-size: 0.85rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 6px;
            color: #94a3b8;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #475569;
        }
        .breadcrumb a:hover {
            color: #2563eb;
        }
        .breadcrumb .current {
            color: #1e293b;
            font-weight: 600;
        }
        main {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        .article-body h1 {
            font-size: 2.4rem;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #0f172a;
            font-weight: 800;
        }
        .article-body h1 i {
            color: #fbbf24;
            margin-right: 12px;
        }
        .article-body .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: #64748b;
            font-size: 0.9rem;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid #e2e8f0;
        }
        .article-body .meta i {
            margin-right: 6px;
        }
        .article-body h2 {
            font-size: 1.8rem;
            margin: 40px 0 16px;
            color: #0f172a;
            font-weight: 700;
            border-left: 4px solid #fbbf24;
            padding-left: 16px;
        }
        .article-body h3 {
            font-size: 1.4rem;
            margin: 32px 0 12px;
            color: #1e293b;
            font-weight: 600;
        }
        .article-body h4 {
            font-size: 1.15rem;
            margin: 24px 0 8px;
            color: #334155;
            font-weight: 600;
        }
        .article-body p {
            margin-bottom: 18px;
            color: #334155;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 20px 24px;
            color: #334155;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body .highlight-box {
            background: #fef9e7;
            border-left: 4px solid #fbbf24;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .article-body .highlight-box strong {
            color: #0f172a;
        }
        .article-body .tip-box {
            background: #eef2ff;
            border-left: 4px solid #6366f1;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
        }
        .article-body .tip-box strong {
            color: #0f172a;
        }
        .article-body .step-list {
            counter-reset: step;
            list-style: none;
            margin-left: 0;
        }
        .article-body .step-list li {
            counter-increment: step;
            padding: 16px 20px 16px 60px;
            background: #fff;
            border-radius: 12px;
            margin-bottom: 12px;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
            position: relative;
            border: 1px solid #e2e8f0;
        }
        .article-body .step-list li::before {
            content: counter(step);
            position: absolute;
            left: 16px;
            top: 16px;
            width: 32px;
            height: 32px;
            background: #fbbf24;
            color: #0f172a;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.95rem;
        }
        .article-body .feature-img {
            border-radius: 16px;
            margin: 28px 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
            width: 100%;
            height: auto;
        }
        .article-body .img-caption {
            font-size: 0.85rem;
            color: #64748b;
            text-align: center;
            margin-top: -20px;
            margin-bottom: 28px;
        }
        .article-body blockquote {
            background: #f1f5f9;
            border-left: 4px solid #2563eb;
            padding: 20px 24px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            font-style: italic;
            color: #1e293b;
        }
        .article-body blockquote cite {
            display: block;
            margin-top: 8px;
            font-style: normal;
            font-weight: 600;
            color: #0f172a;
        }
        .article-body .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
            border-radius: 12px;
            border: 1px solid #e2e8f0;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        .article-body th {
            background: #0f172a;
            color: #fff;
            padding: 14px 16px;
            text-align: left;
            font-weight: 600;
        }
        .article-body td {
            padding: 12px 16px;
            border-bottom: 1px solid #e2e8f0;
        }
        .article-body tr:nth-child(even) {
            background: #f8fafc;
        }
        .article-body tr:hover {
            background: #eef2ff;
        }
        .sidebar {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar .card {
            background: #fff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            margin-bottom: 24px;
            border: 1px solid #e2e8f0;
        }
        .sidebar .card h3 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            color: #0f172a;
            border-bottom: 2px solid #fbbf24;
            padding-bottom: 8px;
        }
        .sidebar .card ul {
            list-style: none;
            margin: 0;
        }
        .sidebar .card li {
            padding: 8px 0;
            border-bottom: 1px solid #f1f5f9;
        }
        .sidebar .card li:last-child {
            border-bottom: none;
        }
        .sidebar .card a {
            color: #334155;
            font-size: 0.9rem;
        }
        .sidebar .card a:hover {
            color: #2563eb;
        }
        .search-form {
            display: flex;
            gap: 8px;
            margin: 24px 0;
        }
        .search-form input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
            background: #fff;
        }
        .search-form input:focus {
            border-color: #fbbf24;
        }
        .search-form button {
            padding: 12px 24px;
            background: #0f172a;
            color: #fff;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .search-form button:hover {
            background: #1e293b;
        }
        .interaction-section {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 2px solid #e2e8f0;
        }
        .interaction-section h2 {
            font-size: 1.6rem;
            margin-bottom: 24px;
            color: #0f172a;
        }
        .rating-stars {
            display: flex;
            gap: 8px;
            font-size: 1.8rem;
            cursor: pointer;
            color: #d1d5db;
            transition: color 0.2s;
            margin: 16px 0;
        }
        .rating-stars i:hover,
        .rating-stars i.active {
            color: #fbbf24;
        }
        .rating-stars i {
            transition: color 0.15s;
        }
        .rating-stars i:hover {
            color: #f59e0b;
        }
        .comment-form textarea {
            width: 100%;
            padding: 14px 18px;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            resize: vertical;
            min-height: 120px;
            outline: none;
            transition: border 0.2s;
            background: #fff;
        }
        .comment-form textarea:focus {
            border-color: #fbbf24;
        }
        .comment-form .form-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 12px;
        }
        .comment-form .form-row input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s;
            background: #fff;
            min-width: 180px;
        }
        .comment-form .form-row input:focus {
            border-color: #fbbf24;
        }
        .comment-form .btn-submit {
            padding: 12px 32px;
            background: #fbbf24;
            color: #0f172a;
            border: none;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.2s;
        }
        .comment-form .btn-submit:hover {
            background: #f59e0b;
            transform: translateY(-1px);
        }
        .comment-form .btn-submit i {
            margin-right: 8px;
        }
        footer {
            background: #0f172a;
            color: #e2e8f0;
            padding: 48px 0 24px;
            margin-top: 40px;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }
        footer h4 {
            color: #fbbf24;
            margin-bottom: 16px;
            font-size: 1.05rem;
        }
        footer a {
            color: #94a3b8;
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
        }
        footer a:hover {
            color: #fbbf24;
            text-decoration: none;
        }
        .friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            padding: 16px 0;
            border-top: 1px solid #1e293b;
            border-bottom: 1px solid #1e293b;
            margin-bottom: 20px;
        }
        .friend-link a {
            color: #94a3b8;
            font-size: 0.85rem;
        }
        .friend-link a:hover {
            color: #fbbf24;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            font-size: 0.85rem;
            color: #64748b;
            border-top: 1px solid #1e293b;
        }
        .copyright strong {
            color: #94a3b8;
        }
        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .sidebar .card {
                margin-bottom: 0;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding-top: 16px;
                gap: 4px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: 8px;
            }
            .header-inner {
                gap: 8px;
            }
            .my-logo {
                font-size: 1.2rem;
                padding: 4px 12px;
            }
            .article-body h1 {
                font-size: 1.7rem;
            }
            .article-body h2 {
                font-size: 1.4rem;
            }
            .article-body h3 {
                font-size: 1.15rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .breadcrumb ol {
                font-size: 0.75rem;
                gap: 4px;
            }
            .comment-form .form-row {
                flex-direction: column;
            }
            .comment-form .form-row input {
                min-width: auto;
            }
            .rating-stars {
                font-size: 1.5rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 12px;
            }
            .article-body h1 {
                font-size: 1.4rem;
            }
            .article-body .meta {
                flex-direction: column;
                gap: 6px;
                font-size: 0.8rem;
            }
            .article-body .step-list li {
                padding: 14px 16px 14px 52px;
            }
            .article-body .step-list li::before {
                width: 28px;
                height: 28px;
                font-size: 0.8rem;
                left: 12px;
                top: 12px;
            }
            footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #f1f5f9;
        }
        ::-webkit-scrollbar-thumb {
            background: #94a3b8;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #64748b;
        }
        .faq-item {
            border: 1px solid #e2e8f0;
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            background: #fff;
        }
        .faq-question {
            padding: 16px 20px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #f8fafc;
            transition: background 0.2s;
            color: #0f172a;
        }
        .faq-question:hover {
            background: #eef2ff;
        }
        .faq-question i {
            transition: transform 0.3s;
            color: #fbbf24;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }
        .faq-answer.open {
            padding: 0 20px 20px;
            max-height: 400px;
        }
        .faq-answer p {
            margin-bottom: 0;
            padding-top: 8px;
        }