*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #1a2a6c;
            --secondary: #b21f1f;
            --accent: #fdbb2d;
            --bg: #f5f7fc;
            --card-bg: #ffffff;
            --text: #1e1e2f;
            --text-light: #555;
            --border: #e0e4f0;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --radius: 16px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-bg: linear-gradient(135deg, #0f0c29, #1a2a6c, #24243e);
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            padding: 0;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: #1a2a6c;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #b21f1f;
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: var(--header-bg);
            color: #fff;
            padding: 0 0 12px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 16px 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            width: 100%;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 900;
            letter-spacing: -0.5px;
            color: #fff;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, #fdbb2d, #ff6b6b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .my-logo i {
            -webkit-text-fill-color: #fdbb2d;
            font-size: 2rem;
        }
        .my-logo:hover {
            opacity: 0.9;
            text-decoration: none;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 12px;
            border-radius: 8px;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .nav-menu a {
            color: #eee;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: all 0.25s;
            white-space: nowrap;
        }
        .nav-menu a:hover,
        .nav-menu a.active {
            background: rgba(255, 255, 255, 0.15);
            color: #fdbb2d;
            text-decoration: none;
        }
        .breadcrumb {
            padding: 10px 20px 6px;
            max-width: var(--max-width);
            margin: 0 auto;
            width: 100%;
            font-size: 0.85rem;
            color: #bbb;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumb a {
            color: #ddd;
        }
        .breadcrumb a:hover {
            color: #fdbb2d;
            text-decoration: none;
        }
        .breadcrumb span {
            color: #aaa;
        }
        main {
            padding: 30px 0 50px;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .content-area {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 40px 36px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 24px 20px;
            box-shadow: var(--shadow);
        }
        .sidebar-card h3 {
            font-size: 1.2rem;
            margin-bottom: 16px;
            border-left: 4px solid var(--accent);
            padding-left: 12px;
            color: var(--primary);
        }
        .sidebar-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .sidebar-links li a {
            display: block;
            padding: 8px 12px;
            background: #f8f9ff;
            border-radius: 8px;
            font-size: 0.9rem;
            transition: all 0.2s;
            border-left: 3px solid transparent;
        }
        .sidebar-links li a:hover {
            background: #eef0ff;
            border-left-color: var(--accent);
            text-decoration: none;
            transform: translateX(4px);
        }
        h1 {
            font-size: 2.6rem;
            font-weight: 900;
            line-height: 1.2;
            color: var(--primary);
            margin-bottom: 10px;
            letter-spacing: -0.5px;
        }
        h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--primary);
            margin-top: 48px;
            margin-bottom: 16px;
            border-bottom: 3px solid var(--accent);
            padding-bottom: 8px;
        }
        h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #1a2a6c;
            margin-top: 32px;
            margin-bottom: 12px;
        }
        h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: #2d3a7a;
            margin-top: 24px;
            margin-bottom: 8px;
        }
        p {
            margin-bottom: 18px;
            color: var(--text);
        }
        .lead {
            font-size: 1.2rem;
            color: #333;
            font-weight: 500;
            line-height: 1.8;
            background: #f0f4ff;
            padding: 20px 24px;
            border-radius: 12px;
            border-left: 4px solid var(--accent);
        }
        .highlight {
            background: linear-gradient(120deg, #fef3c7 0%, #fef3c7 40%, #fde68a 100%);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .emoji-big {
            font-size: 1.6rem;
            margin-right: 4px;
        }
        .last-updated {
            display: inline-block;
            background: #eef2ff;
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #555;
            margin-bottom: 20px;
            border: 1px solid #dde4f0;
        }
        .last-updated i {
            margin-right: 6px;
            color: var(--primary);
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin: 28px 0;
        }
        .feature-box {
            background: #f8faff;
            padding: 24px 20px;
            border-radius: 12px;
            border: 1px solid var(--border);
            transition: all 0.3s;
        }
        .feature-box:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
            border-color: var(--accent);
        }
        .feature-box i {
            font-size: 2rem;
            color: var(--secondary);
            margin-bottom: 12px;
        }
        .feature-box h4 {
            margin-top: 0;
            margin-bottom: 6px;
        }
        .feature-box p {
            font-size: 0.95rem;
            margin-bottom: 0;
            color: var(--text-light);
        }
        .img-wrap {
            margin: 30px 0;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            background: #f0f2f8;
        }
        .img-wrap img {
            width: 100%;
            height: auto;
            display: block;
        }
        .img-caption {
            padding: 12px 20px;
            background: #f8faff;
            font-size: 0.9rem;
            color: #666;
            border-top: 1px solid var(--border);
            font-style: italic;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 28px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
        }
        th {
            background: var(--primary);
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }
        td {
            padding: 10px 16px;
            border-bottom: 1px solid var(--border);
            background: #fafbff;
        }
        tr:hover td {
            background: #f0f4ff;
        }
        .interview-box {
            background: linear-gradient(135deg, #f8f4ff, #f0f0ff);
            padding: 28px 30px;
            border-radius: 16px;
            margin: 30px 0;
            border-left: 6px solid #7c3aed;
            position: relative;
        }
        .interview-box::before {
            content: '\201C';
            font-size: 4rem;
            position: absolute;
            top: -10px;
            left: 16px;
            color: #7c3aed;
            opacity: 0.2;
            font-family: Georgia, serif;
        }
        .interview-box p {
            margin-bottom: 10px;
            font-style: italic;
        }
        .interview-box .attribution {
            font-weight: 600;
            color: var(--primary);
            font-style: normal;
        }
        .search-form {
            display: flex;
            gap: 10px;
            margin: 24px 0;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 180px;
            padding: 12px 20px;
            border: 2px solid var(--border);
            border-radius: 30px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
            background: #fafbff;
        }
        .search-form input:focus {
            border-color: var(--primary);
            background: #fff;
        }
        .search-form button {
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: #2d3a8a;
            transform: scale(1.02);
        }
        .form-card {
            background: #f8faff;
            border-radius: 14px;
            padding: 28px 30px;
            margin: 30px 0;
            border: 1px solid var(--border);
        }
        .form-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .form-group {
            margin-bottom: 18px;
        }
        .form-group label {
            display: block;
            font-weight: 500;
            margin-bottom: 6px;
            color: #333;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: 10px;
            font-size: 0.95rem;
            font-family: var(--font);
            background: #fff;
            transition: border 0.3s;
            outline: none;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-group .star-rating {
            display: flex;
            gap: 6px;
            font-size: 1.8rem;
            color: #ccc;
            cursor: pointer;
        }
        .form-group .star-rating i {
            transition: color 0.2s, transform 0.15s;
        }
        .form-group .star-rating i:hover,
        .form-group .star-rating i.active {
            color: #fdbb2d;
            transform: scale(1.1);
        }
        .btn-submit {
            padding: 14px 40px;
            background: linear-gradient(135deg, #1a2a6c, #2d3a8a);
            color: #fff;
            border: none;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(26, 42, 108, 0.25);
        }
        .site-footer {
            background: var(--header-bg);
            color: #ddd;
            padding: 40px 20px 24px;
            margin-top: 40px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-inner h4 {
            color: #fdbb2d;
            margin-top: 0;
            margin-bottom: 14px;
            font-size: 1.1rem;
        }
        .footer-inner p,
        .footer-inner a {
            color: #ccc;
            font-size: 0.9rem;
        }
        .footer-inner a:hover {
            color: #fdbb2d;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 30px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 0.85rem;
            color: #999;
        }
        friend-link {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            margin-top: 12px;
        }
        friend-link a {
            color: #bbb;
            font-size: 0.9rem;
            padding: 4px 0;
            border-bottom: 1px solid transparent;
            transition: all 0.2s;
        }
        friend-link a:hover {
            color: #fdbb2d;
            border-bottom-color: #fdbb2d;
            text-decoration: none;
        }
        @media (max-width: 1024px) {
            .main-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 768px) {
            .header-top {
                padding: 12px 16px;
            }
            .my-logo {
                font-size: 1.4rem;
            }
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(0, 0, 0, 0.3);
                padding: 12px 16px;
                border-radius: 12px;
                margin-top: 8px;
                gap: 4px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 10px 16px;
                width: 100%;
                border-radius: 8px;
            }
            .content-area {
                padding: 24px 18px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .search-form {
                flex-direction: column;
            }
            .search-form button {
                width: 100%;
                justify-content: center;
            }
            .feature-grid {
                grid-template-columns: 1fr 1fr;
            }
            .breadcrumb {
                font-size: 0.75rem;
                padding: 8px 16px 4px;
            }
        }
        @media (max-width: 480px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .content-area {
                padding: 16px 12px;
            }
            .form-card {
                padding: 18px 16px;
            }
            .interview-box {
                padding: 20px 18px;
            }
            h1 {
                font-size: 1.5rem;
            }
            .lead {
                font-size: 1rem;
                padding: 16px 18px;
            }
        }
        .toc {
            background: #f0f4ff;
            padding: 20px 24px;
            border-radius: 12px;
            margin: 24px 0;
            border: 1px solid #dde4f0;
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ol {
            padding-left: 20px;
            columns: 2;
            column-gap: 30px;
        }
        .toc ol li {
            margin-bottom: 6px;
            break-inside: avoid;
        }
        .toc ol li a {
            color: var(--primary);
            font-weight: 500;
        }
        .toc ol li a:hover {
            color: var(--secondary);
        }
        @media (max-width: 600px) {
            .toc ol {
                columns: 1;
            }
        }
        .tag {
            display: inline-block;
            background: #eef2ff;
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 500;
            margin: 2px 4px 2px 0;
        }
        .pro-tip {
            background: #fefce8;
            border: 1px solid #fde68a;
            border-radius: 12px;
            padding: 18px 22px;
            margin: 20px 0;
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }
        .pro-tip i {
            font-size: 1.8rem;
            color: #f59e0b;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .pro-tip p {
            margin-bottom: 0;
        }