* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            background: #f9fafb;
            color: #1a1a2e;
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: #1e3a8a;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #f59e0b;
            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, #0f172a 0%, #1e293b 100%);
            padding: 18px 0 12px;
            border-bottom: 4px solid #f59e0b;
            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;
            gap: 12px;
        }
        .my-logo {
            font-size: 28px;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-shadow: 0 2px 12px rgba(245, 158, 11, 0.3);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: #fbbf24;
            font-size: 32px;
        }
        .my-logo small {
            font-size: 14px;
            font-weight: 400;
            -webkit-text-fill-color: #94a3b8;
            letter-spacing: 0.3px;
            display: block;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 28px;
            color: #fbbf24;
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        nav {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 20px;
            align-items: center;
        }
        nav a {
            color: #e2e8f0;
            font-weight: 500;
            font-size: 15px;
            padding: 6px 4px;
            border-bottom: 2px solid transparent;
            transition: all 0.2s;
            white-space: nowrap;
        }
        nav a:hover {
            color: #fbbf24;
            border-bottom-color: #fbbf24;
            text-decoration: none;
        }
        .breadcrumb {
            background: #f1f5f9;
            padding: 10px 0;
            font-size: 14px;
            border-bottom: 1px solid #e2e8f0;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            padding: 0 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 12px;
            color: #94a3b8;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #1e3a8a;
        }
        .breadcrumb .current {
            color: #64748b;
            font-weight: 600;
        }
        main {
            padding: 30px 0 50px;
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #0f172a;
            margin-bottom: 10px;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        h1 i {
            color: #f59e0b;
            margin-right: 10px;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #1e293b;
            margin-top: 48px;
            margin-bottom: 16px;
            border-left: 5px solid #f59e0b;
            padding-left: 18px;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #334155;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #475569;
            margin-top: 22px;
            margin-bottom: 8px;
        }
        p {
            margin-bottom: 18px;
            color: #1e293b;
        }
        .last-updated {
            display: inline-block;
            background: #eef2ff;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 14px;
            color: #1e3a8a;
            font-weight: 500;
            margin-bottom: 20px;
            border: 1px solid #c7d2fe;
        }
        .last-updated i {
            margin-right: 6px;
        }
        .featured-image {
            margin: 28px 0 32px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            background: #e2e8f0;
            position: relative;
        }
        .featured-image img {
            width: 100%;
            max-height: 520px;
            object-fit: cover;
        }
        .featured-image .img-caption {
            padding: 14px 20px;
            background: #f8fafc;
            font-size: 14px;
            color: #475569;
            border-top: 1px solid #e2e8f0;
        }
        .highlight-box {
            background: linear-gradient(135deg, #eef2ff, #faf5ff);
            border-radius: 16px;
            padding: 28px 32px;
            margin: 30px 0;
            border-left: 6px solid #f59e0b;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }
        .highlight-box h3 {
            margin-top: 0;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin: 28px 0;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 24px;
            margin: 28px 0;
        }
        .card {
            background: #ffffff;
            border-radius: 16px;
            padding: 24px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
            border: 1px solid #f1f5f9;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
        }
        .card h4 {
            margin-top: 0;
            color: #0f172a;
        }
        .card i {
            color: #f59e0b;
            margin-right: 6px;
        }
        .stat-badge {
            display: inline-block;
            background: #f59e0b;
            color: #0f172a;
            font-weight: 700;
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 13px;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 24px 0;
            border-radius: 12px;
            border: 1px solid #e2e8f0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
        }
        th {
            background: #1e293b;
            color: #f8fafc;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 12px 16px;
            border-bottom: 1px solid #f1f5f9;
        }
        tr:nth-child(even) {
            background: #f8fafc;
        }
        tr:hover td {
            background: #f1f5f9;
        }
        .btn {
            display: inline-block;
            background: #f59e0b;
            color: #0f172a;
            font-weight: 700;
            padding: 10px 28px;
            border-radius: 40px;
            border: none;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            font-size: 15px;
        }
        .btn:hover {
            background: #d97706;
            transform: scale(1.02);
            text-decoration: none;
            color: #0f172a;
        }
        .btn-outline {
            background: transparent;
            border: 2px solid #f59e0b;
            color: #f59e0b;
        }
        .btn-outline:hover {
            background: #f59e0b;
            color: #0f172a;
        }
        .search-section {
            background: #ffffff;
            border-radius: 18px;
            padding: 32px 36px;
            margin: 40px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e2e8f0;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            max-width: 640px;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border: 2px solid #e2e8f0;
            border-radius: 40px;
            font-size: 16px;
            outline: none;
            transition: border 0.2s;
            background: #f8fafc;
        }
        .search-form input:focus {
            border-color: #f59e0b;
            background: #ffffff;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            margin: 40px 0;
        }
        .feedback-card {
            background: #ffffff;
            border-radius: 18px;
            padding: 28px 32px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            border: 1px solid #e2e8f0;
        }
        .feedback-card h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-weight: 600;
            margin-bottom: 4px;
            color: #1e293b;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid #e2e8f0;
            border-radius: 10px;
            font-size: 15px;
            outline: none;
            background: #f8fafc;
            transition: border 0.2s;
            font-family: inherit;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #f59e0b;
            background: #ffffff;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 28px;
            color: #d1d5db;
            cursor: pointer;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            cursor: pointer;
            transition: color 0.15s;
            color: #d1d5db;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f59e0b;
        }
        footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 44px 0 28px;
            margin-top: 50px;
            border-top: 4px solid #f59e0b;
        }
        footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
        }
        footer h4 {
            color: #fbbf24;
            margin-top: 0;
            font-weight: 700;
        }
        footer a {
            color: #94a3b8;
            display: inline-block;
            margin-bottom: 6px;
        }
        footer a:hover {
            color: #fbbf24;
            text-decoration: none;
        }
        friend-link {
            display: block;
            margin-top: 12px;
            font-size: 14px;
        }
        friend-link a {
            color: #fbbf24;
            font-weight: 500;
        }
        .copyright {
            grid-column: 1 / -1;
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            margin-top: 12px;
            text-align: center;
            font-size: 14px;
            color: #64748b;
        }
        .copyright strong {
            color: #94a3b8;
        }
        @media (max-width: 992px) {
            .grid-2,
            .grid-3 {
                grid-template-columns: 1fr 1fr;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            footer .container {
                grid-template-columns: 1fr 1fr;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                padding: 16px 0 8px;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                margin-top: 8px;
            }
            nav.open {
                display: flex;
            }
            nav a {
                padding: 8px 0;
                font-size: 16px;
                width: 100%;
            }
            .grid-2,
            .grid-3 {
                grid-template-columns: 1fr;
            }
            footer .container {
                grid-template-columns: 1fr;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form input {
                min-width: auto;
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .search-section,
            .feedback-card {
                padding: 22px 18px;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.35rem;
            }
            .highlight-box {
                padding: 20px 18px;
            }
            .header-inner {
                gap: 6px;
            }
            .my-logo {
                font-size: 22px;
            }
            .my-logo small {
                font-size: 12px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            h1 {
                font-size: 1.4rem;
            }
            h2 {
                font-size: 1.2rem;
                padding-left: 12px;
            }
            .stat-badge {
                font-size: 11px;
                padding: 1px 10px;
            }
            .btn {
                padding: 8px 20px;
                font-size: 14px;
            }
        }
        .highlight-keyword {
            background: linear-gradient(120deg, rgba(245, 158, 11, 0.18), rgba(245, 158, 11, 0.06));
            padding: 0 6px;
            font-weight: 600;
            border-radius: 4px;
        }
        .emoji-lg {
            font-size: 1.8rem;
            vertical-align: middle;
        }
        hr {
            border: none;
            border-top: 2px solid #e2e8f0;
            margin: 40px 0;
        }
        .toc {
            background: #ffffff;
            border: 1px solid #e2e8f0;
            border-radius: 16px;
            padding: 24px 28px;
            margin: 24px 0 32px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ul {
            list-style: none;
            padding-left: 0;
            columns: 2;
            column-gap: 28px;
        }
        .toc li {
            padding: 4px 0;
            break-inside: avoid;
        }
        .toc a {
            color: #1e3a8a;
            font-weight: 500;
        }
        .toc a:hover {
            color: #f59e0b;
        }
        @media (max-width: 600px) {
            .toc ul {
                columns: 1;
            }
        }
        .interview-block {
            background: #f1f5f9;
            border-radius: 16px;
            padding: 24px 28px;
            margin: 24px 0;
            border-left: 4px solid #f59e0b;
            font-style: italic;
        }
        .interview-block strong {
            font-style: normal;
        }
        .insight-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: #f59e0b;
            line-height: 1;
            display: block;
        }