*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f4f7fc;
            color: #1e2a3a;
            line-height: 1.7;
            padding: 0 16px;
            max-width: 1200px;
            margin: 0 auto;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: #1e40af;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 12px;
        }
        h1,
        h2,
        h3,
        h4 {
            font-weight: 700;
            line-height: 1.3;
            color: #0b1a2c;
        }
        h1 {
            font-size: 2.4rem;
            margin-bottom: 0.75rem;
        }
        h2 {
            font-size: 1.8rem;
            margin-top: 2.5rem;
            margin-bottom: 0.6rem;
            border-left: 5px solid #2563eb;
            padding-left: 16px;
        }
        h3 {
            font-size: 1.35rem;
            margin-top: 1.8rem;
            margin-bottom: 0.4rem;
            color: #1e3a5f;
        }
        h4 {
            font-size: 1.1rem;
            margin-top: 1.2rem;
            margin-bottom: 0.3rem;
            color: #2c4a6e;
        }
        p {
            margin-bottom: 1.2rem;
        }
        ul,
        ol {
            margin-bottom: 1.4rem;
            padding-left: 1.8rem;
        }
        li {
            margin-bottom: 0.4rem;
        }
        hr {
            border: none;
            border-top: 2px dashed #cbd5e1;
            margin: 2.5rem 0;
        }
        .container {
            background: #ffffff;
            border-radius: 20px;
            padding: 20px 24px 32px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            margin: 16px 0 32px;
        }
        @media (min-width:768px) {
            body {
                padding: 0 28px;
            }
            .container {
                padding: 32px 40px 48px;
            }
            h1 {
                font-size: 3rem;
            }
            h2 {
                font-size: 2.2rem;
            }
        }
        .site-header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0 8px;
            border-bottom: 2px solid #e2e8f0;
            position: relative;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #0b1a2c;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #2563eb, #7c3aed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .my-logo small {
            font-size: 0.9rem;
            font-weight: 400;
            -webkit-text-fill-color: #64748b;
            color: #64748b;
            margin-left: 4px;
        }
        .nav-menu {
            display: flex;
            gap: 8px 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-menu a {
            font-weight: 500;
            color: #1e2a3a;
            padding: 6px 12px;
            border-radius: 40px;
            transition: background 0.2s ease, color 0.2s ease;
            font-size: 0.95rem;
        }
        .nav-menu a:hover {
            background: #2563eb;
            color: #fff;
            text-decoration: none;
        }
        .nav-menu a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 6px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: #0b1a2c;
            border-radius: 6px;
            transition: all 0.3s ease;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }
        @media (max-width:767px) {
            .hamburger {
                display: flex;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: #ffffff;
                padding: 16px 0 8px;
                border-top: 1px solid #e2e8f0;
                margin-top: 12px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 10px 16px;
                width: 100%;
                border-radius: 8px;
            }
            .site-header {
                padding-bottom: 4px;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            padding: 12px 0 4px;
            font-size: 0.9rem;
            color: #64748b;
            list-style: none;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb li+li::before {
            content: "›";
            color: #94a3b8;
            font-size: 1.2rem;
            margin-right: 6px;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb .current {
            color: #1e2a3a;
            font-weight: 500;
        }
        .search-box {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 20px 0 24px;
            background: #f1f5f9;
            padding: 12px 16px;
            border-radius: 60px;
            align-items: center;
        }
        .search-box i {
            color: #64748b;
            font-size: 1.1rem;
        }
        .search-box input[type="text"] {
            flex: 1;
            min-width: 160px;
            border: none;
            background: transparent;
            padding: 10px 0;
            font-size: 1rem;
            outline: none;
            color: #1e2a3a;
        }
        .search-box input[type="text"]::placeholder {
            color: #94a3b8;
        }
        .search-box button {
            background: #2563eb;
            color: #fff;
            border: none;
            padding: 10px 28px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s ease, transform 0.1s ease;
        }
        .search-box button:hover {
            background: #1e40af;
            transform: scale(1.02);
        }
        .search-box button:active {
            transform: scale(0.97);
        }
        .featured-image {
            margin: 24px 0 28px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
        }
        .featured-image figcaption {
            background: #f1f5f9;
            padding: 10px 16px;
            font-size: 0.9rem;
            color: #475569;
            font-style: italic;
        }
        .feedback-section {
            background: #f8fafc;
            border-radius: 20px;
            padding: 24px 20px 28px;
            margin: 32px 0 24px;
            border: 1px solid #e2e8f0;
        }
        .feedback-section h3 {
            margin-top: 0;
            border-left: none;
            padding-left: 0;
        }
        .rating-stars {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
            transition: color 0.2s ease;
            margin: 8px 0 12px;
        }
        .rating-stars i.active,
        .rating-stars i:hover,
        .rating-stars i:hover~i {
            color: #f59e0b;
        }
        .rating-stars i {
            transition: color 0.15s ease;
        }
        .rating-stars i.active {
            color: #f59e0b;
        }
        .feedback-section textarea {
            width: 100%;
            border: 1px solid #cbd5e1;
            border-radius: 12px;
            padding: 14px 16px;
            font-size: 1rem;
            font-family: inherit;
            resize: vertical;
            min-height: 90px;
            background: #ffffff;
            transition: border 0.2s ease;
        }
        .feedback-section textarea:focus {
            border-color: #2563eb;
            outline: none;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
        }
        .feedback-section .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 16px;
        }
        .feedback-section .btn-group button {
            padding: 10px 28px;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: background 0.2s ease, transform 0.1s ease;
        }
        .feedback-section .btn-group .btn-primary {
            background: #2563eb;
            color: #fff;
        }
        .feedback-section .btn-group .btn-primary:hover {
            background: #1e40af;
            transform: scale(1.02);
        }
        .feedback-section .btn-group .btn-secondary {
            background: #e2e8f0;
            color: #1e2a3a;
        }
        .feedback-section .btn-group .btn-secondary:hover {
            background: #cbd5e1;
            transform: scale(1.02);
        }
        .last-updated {
            display: inline-block;
            background: #f1f5f9;
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.85rem;
            color: #475569;
            margin-bottom: 16px;
        }
        .last-updated i {
            margin-right: 6px;
            color: #2563eb;
        }
        .site-footer {
            border-top: 2px solid #e2e8f0;
            padding: 24px 0 16px;
            margin-top: 24px;
            font-size: 0.95rem;
            color: #475569;
        }
        .site-footer .footer-flex {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 20px;
        }
        friend-link {
            display: block;
            margin-top: 12px;
        }
        friend-link a {
            display: inline-block;
            margin-right: 20px;
            margin-bottom: 6px;
            font-weight: 500;
        }
        .copyright {
            margin-top: 16px;
            font-size: 0.88rem;
            color: #64748b;
            border-top: 1px solid #e2e8f0;
            padding-top: 16px;
            text-align: center;
        }
        .copyright i {
            color: #ef4444;
        }
        @media (max-width:480px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .container {
                padding: 12px 14px 20px;
            }
            .search-box {
                border-radius: 30px;
                padding: 8px 12px;
            }
            .search-box button {
                padding: 8px 18px;
                font-size: 0.85rem;
            }
            .rating-stars {
                font-size: 1.5rem;
            }
            .feedback-section {
                padding: 16px 14px 20px;
            }
        }
        .highlight-box {
            background: #eef2ff;
            border-left: 4px solid #2563eb;
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 20px 0;
        }
        .highlight-box p:last-child {
            margin-bottom: 0;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 18px 0 24px;
            font-size: 0.95rem;
        }
        .data-table th,
        .data-table td {
            padding: 12px 14px;
            border-bottom: 1px solid #e2e8f0;
            text-align: left;
        }
        .data-table th {
            background: #f1f5f9;
            font-weight: 600;
            color: #0b1a2c;
        }
        .data-table tr:hover td {
            background: #f8fafc;
        }
        @media (max-width:600px) {
            .data-table {
                font-size: 0.85rem;
            }
            .data-table th,
            .data-table td {
                padding: 8px 10px;
            }
        }
        .toc {
            background: #f8fafc;
            border-radius: 16px;
            padding: 18px 22px;
            margin: 16px 0 24px;
            border: 1px solid #e2e8f0;
        }
        .toc h4 {
            margin-top: 0;
            margin-bottom: 8px;
        }
        .toc ul {
            list-style: none;
            padding-left: 0;
            margin-bottom: 0;
        }
        .toc ul li {
            padding: 3px 0;
        }
        .toc ul li a {
            color: #2563eb;
        }
        .toc ul li a:hover {
            text-decoration: underline;
        }
        .interview-block {
            background: #f1f5f9;
            border-radius: 16px;
            padding: 20px 22px;
            margin: 20px 0;
            border-left: 5px solid #7c3aed;
        }
        .interview-block .interviewee {
            font-weight: 700;
            color: #0b1a2c;
        }
        .interview-block .interviewee i {
            color: #7c3aed;
            margin-right: 6px;
        }
        .nav-menu a,
        .search-box button,
        .feedback-section .btn-group button,
        .rating-stars i,
        .hamburger {
            transition: all 0.2s ease;
        }
        section[id] {
            scroll-margin-top: 24px;
        }
        .small-note {
            font-size: 0.85rem;
            color: #64748b;
        }