* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f4f7fa;
            color: #1e2a3e;
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: #b45309;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #78350f;
            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, #0f172a, #1e293b);
            padding: 18px 0;
            border-bottom: 4px solid #b45309;
            position: sticky;
            top: 0;
            z-index: 1000;
            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: 1.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f59e0b, #b45309);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 0 30px rgba(245, 158, 11, 0.15);
            transition: transform 0.3s;
        }
        .my-logo:hover {
            transform: scale(1.03);
            text-decoration: none;
        }
        .my-logo small {
            font-size: 0.7rem;
            -webkit-text-fill-color: #94a3b8;
            letter-spacing: 1px;
            display: block;
            font-weight: 400;
        }
        .hamburger {
            display: none;
            background: none;
            border: 2px solid #b45309;
            color: #f59e0b;
            font-size: 1.6rem;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: 0.2s;
        }
        .hamburger:hover {
            background: #b45309;
            color: #fff;
        }
        nav {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }
        nav a {
            color: #e2e8f0;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 40px;
            transition: 0.25s;
            font-size: 0.95rem;
            letter-spacing: 0.3px;
        }
        nav a:hover {
            background: #b45309;
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
        }
        nav a i {
            margin-right: 6px;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 12px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #d1d9e6;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #b45309;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #1e2a3e;
        }
        .breadcrumb a:hover {
            color: #b45309;
        }
        .breadcrumb .active {
            color: #b45309;
            font-weight: 600;
        }
        main {
            padding: 40px 0 60px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        .article-body h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            color: #0f172a;
            margin-bottom: 10px;
            letter-spacing: -0.5px;
        }
        .article-body .meta {
            color: #475569;
            font-size: 0.95rem;
            margin-bottom: 28px;
            border-bottom: 2px solid #e2e8f0;
            padding-bottom: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .article-body .meta i {
            color: #b45309;
            margin-right: 6px;
        }
        .article-body h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #0f172a;
            margin-top: 48px;
            margin-bottom: 16px;
            border-left: 6px solid #b45309;
            padding-left: 18px;
        }
        .article-body h3 {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1e293b;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        .article-body h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: #334155;
            margin-top: 24px;
            margin-bottom: 8px;
        }
        .article-body p {
            margin-bottom: 18px;
            color: #1e2a3e;
        }
        .article-body ul,
        .article-body ol {
            margin: 12px 0 20px 28px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body .feature-img {
            margin: 30px 0;
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            overflow: hidden;
        }
        .article-body .feature-img img {
            width: 100%;
            border-radius: 16px;
        }
        .article-body .feature-img figcaption {
            background: #f1f5f9;
            padding: 12px 18px;
            font-size: 0.9rem;
            color: #475569;
            font-style: italic;
        }
        .highlight-box {
            background: linear-gradient(135deg, #fef3c7, #fde68a);
            border-left: 6px solid #b45309;
            padding: 20px 24px;
            border-radius: 12px;
            margin: 24px 0;
        }
        .highlight-box strong {
            color: #78350f;
        }
        .inline-link {
            font-weight: 600;
            border-bottom: 2px dotted #b45309;
        }
        .sidebar {
            background: #ffffff;
            border-radius: 20px;
            padding: 28px 22px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            border: 1px solid #e2e8f0;
            height: fit-content;
            position: sticky;
            top: 100px;
        }
        .sidebar h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #0f172a;
            margin-bottom: 18px;
            border-bottom: 3px solid #b45309;
            padding-bottom: 10px;
        }
        .sidebar ul {
            list-style: none;
        }
        .sidebar ul li {
            margin-bottom: 10px;
        }
        .sidebar ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 12px;
            border-radius: 10px;
            background: #f8fafc;
            transition: 0.2s;
            color: #1e2a3e;
        }
        .sidebar ul li a:hover {
            background: #b45309;
            color: #fff;
            text-decoration: none;
        }
        .sidebar ul li a i {
            color: #b45309;
            width: 20px;
        }
        .sidebar ul li a:hover i {
            color: #fff;
        }
        .interactive-sections {
            margin-top: 50px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        @media (max-width: 768px) {
            .interactive-sections {
                grid-template-columns: 1fr;
            }
        }
        .card-form {
            background: #fff;
            border-radius: 20px;
            padding: 28px 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            border: 1px solid #e2e8f0;
        }
        .card-form h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #0f172a;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .card-form h3 i {
            color: #b45309;
        }
        .card-form input,
        .card-form textarea,
        .card-form select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            font-size: 1rem;
            transition: 0.2s;
            margin-bottom: 14px;
            background: #f8fafc;
            font-family: inherit;
        }
        .card-form input:focus,
        .card-form textarea:focus,
        .card-form select:focus {
            outline: none;
            border-color: #b45309;
            box-shadow: 0 0 0 4px rgba(180, 83, 9, 0.1);
        }
        .card-form textarea {
            min-height: 100px;
            resize: vertical;
        }
        .card-form .btn {
            background: #b45309;
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: 0.25s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .card-form .btn:hover {
            background: #78350f;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(180, 83, 9, 0.3);
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
            margin-bottom: 14px;
            transition: 0.2s;
        }
        .star-rating i {
            transition: 0.2s;
        }
        .star-rating i.active,
        .star-rating i:hover,
        .star-rating i:hover~i {
            color: #f59e0b;
        }
        footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 40px 0 30px;
            border-top: 4px solid #b45309;
            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;
            }
        }
        footer h4 {
            color: #f59e0b;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        footer a {
            color: #94a3b8;
        }
        footer a:hover {
            color: #f59e0b;
            text-decoration: underline;
        }
        footer .copy {
            border-top: 1px solid #1e293b;
            margin-top: 30px;
            padding-top: 20px;
            text-align: center;
            font-size: 0.9rem;
            color: #64748b;
        }
        friend-link {
            display: block;
            margin-top: 12px;
        }
        friend-link a {
            display: inline-block;
            margin-right: 12px;
            padding: 4px 12px;
            background: #1e293b;
            border-radius: 30px;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                padding-top: 16px;
                gap: 6px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 12px 16px;
                border-radius: 10px;
                background: rgba(255, 255, 255, 0.05);
            }
            .article-body h1 {
                font-size: 2rem;
            }
            .article-body h2 {
                font-size: 1.6rem;
            }
            .article-body h3 {
                font-size: 1.3rem;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .sidebar {
                position: static;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            .article-body h1 {
                font-size: 1.7rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
        }
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #f1f5f9;
        }
        ::-webkit-scrollbar-thumb {
            background: #b45309;
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #78350f;
        }