*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Roboto, Arial, sans-serif;
            background: #f5f7fc;
            color: #1e293b;
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: #1e6f9f;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: #f97316;
            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(145deg, #0b1121 0%, #1a2639 100%);
            color: #fff;
            padding: 18px 0;
            border-bottom: 4px solid #f97316;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            color: #f97316;
            letter-spacing: -0.5px;
            background: rgba(255, 255, 255, 0.05);
            padding: 6px 18px;
            border-radius: 40px;
            border: 1px solid rgba(249, 115, 22, 0.3);
            transition: 0.3s;
            display: inline-block;
        }
        .my-logo:hover {
            background: rgba(249, 115, 22, 0.15);
            border-color: #f97316;
            text-decoration: none;
        }
        .my-logo i {
            color: #ffd700;
            margin-right: 8px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-size: 1.6rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #f97316;
        }
        .nav-menu {
            display: flex;
            gap: 8px 20px;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-menu a {
            color: #e2e8f0;
            font-weight: 500;
            padding: 6px 10px;
            border-radius: 6px;
            font-size: 0.95rem;
            transition: 0.2s;
        }
        .nav-menu a:hover {
            color: #f97316;
            background: rgba(249, 115, 22, 0.08);
            text-decoration: none;
        }
        .nav-menu a i {
            margin-right: 6px;
            font-size: 0.9rem;
        }
        .breadcrumb {
            padding: 12px 0 6px;
            font-size: 0.85rem;
            color: #94a3b8;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb a {
            color: #94a3b8;
        }
        .breadcrumb a:hover {
            color: #f97316;
        }
        .breadcrumb span {
            color: #f97316;
        }
        .hero {
            background: linear-gradient(135deg, #0f1a2e, #1e2d4a);
            color: #fff;
            padding: 40px 0 50px;
            text-align: center;
            border-radius: 0 0 40px 40px;
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 12px;
        }
        .hero h1 i {
            color: #ffd700;
        }
        .hero p {
            font-size: 1.2rem;
            color: #cbd5e1;
            max-width: 780px;
            margin: 0 auto 20px;
        }
        .hero .badge {
            display: inline-block;
            background: #f97316;
            padding: 6px 24px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            color: #fff;
            letter-spacing: 0.3px;
        }
        .hero .badge i {
            margin-right: 6px;
        }
        main {
            padding-bottom: 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        @media(max-width:992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #0b1121;
            margin: 48px 0 18px;
            padding-bottom: 10px;
            border-bottom: 4px solid #f97316;
            display: inline-block;
        }
        .article-body h2 i {
            color: #f97316;
            margin-right: 10px;
        }
        .article-body h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1e293b;
            margin: 32px 0 14px;
        }
        .article-body h3 i {
            color: #f97316;
            margin-right: 8px;
            font-size: 1.2rem;
        }
        .article-body h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #334155;
            margin: 22px 0 10px;
        }
        .article-body p {
            margin-bottom: 18px;
            color: #334155;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 22px 28px;
            color: #334155;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body .highlight-box {
            background: #edf2ff;
            border-left: 6px solid #1e6f9f;
            padding: 20px 24px;
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        .article-body .highlight-box.orange {
            background: #fff7ed;
            border-left-color: #f97316;
        }
        .article-body .highlight-box.green {
            background: #f0fdf4;
            border-left-color: #22c55e;
        }
        .article-body .highlight-box h4 {
            margin-top: 0;
        }
        .article-body .btn-link {
            display: inline-block;
            background: #f97316;
            color: #fff;
            padding: 10px 28px;
            border-radius: 30px;
            font-weight: 600;
            transition: 0.25s;
            border: none;
            cursor: pointer;
        }
        .article-body .btn-link:hover {
            background: #ea580c;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(249, 115, 22, 0.3);
        }
        .article-body .btn-link i {
            margin-right: 8px;
        }
        .article-body img {
            border-radius: 16px;
            margin: 28px 0;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
            width: 100%;
            max-width: 800px;
        }
        .article-body .img-caption {
            font-size: 0.85rem;
            color: #64748b;
            text-align: center;
            margin-top: -18px;
            margin-bottom: 28px;
            font-style: italic;
        }
        .article-body .link-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin: 20px 0 30px;
            list-style: none;
            margin-left: 0;
        }
        .article-body .link-list li {
            background: #fff;
            border: 1px solid #e2e8f0;
            border-radius: 10px;
            padding: 12px 16px;
            transition: 0.2s;
            margin-bottom: 0;
        }
        .article-body .link-list li:hover {
            border-color: #f97316;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        }
        .article-body .link-list li a {
            font-weight: 500;
            display: block;
        }
        .article-body .link-list li a i {
            margin-right: 8px;
            color: #f97316;
        }
        @media(max-width:600px) {
            .article-body .link-list {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 1rem;
            }
        }
        .sidebar {
            position: sticky;
            top: 120px;
            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: 28px;
            border: 1px solid #eef2f6;
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #0b1121;
            border-bottom: 2px solid #f97316;
            padding-bottom: 8px;
        }
        .sidebar-card h3 i {
            color: #f97316;
            margin-right: 8px;
        }
        .sidebar-card ul {
            list-style: none;
            margin-left: 0;
        }
        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid #f1f5f9;
        }
        .sidebar-card ul li:last-child {
            border-bottom: none;
        }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 500;
        }
        .sidebar-card ul li a i {
            color: #f97316;
            width: 18px;
        }
        .search-box {
            display: flex;
            gap: 8px;
            margin-top: 10px;
        }
        .search-box input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.2s;
            background: #f8fafc;
        }
        .search-box input:focus {
            border-color: #f97316;
            background: #fff;
        }
        .search-box button {
            background: #f97316;
            color: #fff;
            border: none;
            padding: 0 22px;
            border-radius: 30px;
            font-size: 1.1rem;
            cursor: pointer;
            transition: 0.2s;
        }
        .search-box button:hover {
            background: #ea580c;
        }
        .comment-section {
            background: #fff;
            border-radius: 20px;
            padding: 32px;
            margin-top: 50px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #eef2f6;
        }
        .comment-section h2 {
            font-size: 1.8rem;
            margin-bottom: 24px;
            border-bottom: 3px solid #f97316;
            padding-bottom: 12px;
            display: inline-block;
        }
        .comment-section h2 i {
            color: #f97316;
            margin-right: 10px;
        }
        .comment-form textarea {
            width: 100%;
            padding: 16px;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            font-size: 1rem;
            min-height: 120px;
            resize: vertical;
            outline: none;
            transition: 0.2s;
            font-family: inherit;
            background: #f8fafc;
        }
        .comment-form textarea:focus {
            border-color: #f97316;
            background: #fff;
        }
        .comment-form .form-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin: 16px 0;
        }
        .comment-form .form-row input {
            flex: 1;
            min-width: 180px;
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 30px;
            font-size: 0.95rem;
            outline: none;
            transition: 0.2s;
            background: #f8fafc;
        }
        .comment-form .form-row input:focus {
            border-color: #f97316;
            background: #fff;
        }
        .comment-form .btn-submit {
            background: #f97316;
            color: #fff;
            border: none;
            padding: 12px 36px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.2s;
        }
        .comment-form .btn-submit:hover {
            background: #ea580c;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(249, 115, 22, 0.25);
        }
        .rating-box {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin: 20px 0 10px;
            padding: 16px 20px;
            background: #fffbeb;
            border-radius: 14px;
            border: 1px solid #fde68a;
        }
        .rating-box label {
            font-weight: 600;
            font-size: 1.05rem;
        }
        .rating-box .stars {
            display: flex;
            gap: 6px;
            font-size: 1.6rem;
            color: #d1d5db;
            cursor: pointer;
            transition: 0.1s;
        }
        .rating-box .stars i {
            transition: 0.15s;
        }
        .rating-box .stars i:hover,
        .rating-box .stars i.active {
            color: #f59e0b;
        }
        .rating-box .stars i.selected {
            color: #f59e0b;
        }
        .rating-box button {
            background: #1e6f9f;
            color: #fff;
            border: none;
            padding: 8px 24px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: 0.2s;
            font-size: 0.9rem;
        }
        .rating-box button:hover {
            background: #15527a;
        }
        footer {
            background: #0b1121;
            color: #cbd5e1;
            padding: 48px 0 30px;
            margin-top: 40px;
            border-top: 4px solid #f97316;
        }
        footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        @media(max-width:768px) {
            footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                background: rgba(11, 17, 33, 0.98);
                padding: 16px;
                border-radius: 12px;
                margin-top: 8px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .header-inner {
                position: relative;
            }
        }
        footer h4 {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        footer h4 i {
            color: #f97316;
            margin-right: 8px;
        }
        footer a {
            color: #94a3b8;
            display: block;
            margin-bottom: 8px;
            transition: 0.2s;
        }
        footer a:hover {
            color: #f97316;
        }
        footer .copyright {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            margin-top: 32px;
            text-align: center;
            font-size: 0.9rem;
            color: #64748b;
        }
        footer .copyright strong {
            color: #f97316;
        }
        friend-link {
            display: block;
            margin-top: 12px;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 10px;
            border: 1px solid #1e293b;
        }
        friend-link a {
            display: inline-block;
            margin-right: 20px;
            margin-bottom: 6px;
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #f97316;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            box-shadow: 0 6px 20px rgba(249, 115, 22, 0.35);
            cursor: pointer;
            transition: 0.25s;
            border: none;
            z-index: 999;
        }
        .scroll-top:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 30px rgba(249, 115, 22, 0.4);
        }
        @media(max-width:480px) {
            .container {
                padding: 0 14px;
            }
            .hero {
                padding: 28px 0 36px;
            }
            .comment-section {
                padding: 20px;
            }
            .sidebar-card {
                padding: 16px;
            }
            .article-body h2 {
                font-size: 1.5rem;
            }
            .article-body h3 {
                font-size: 1.2rem;
            }
            .rating-box {
                flex-direction: column;
                align-items: stretch;
            }
        }