*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
            line-height: 1.75;
            color: #1e1e2a;
            background: #f8f9fc;
            padding: 0 16px;
            max-width: 1200px;
            margin: 0 auto;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s;
        }
        a:hover {
            color: #1d4ed8;
            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;
            margin-top: 1.8em;
            margin-bottom: 0.6em;
            color: #0f172a;
        }
        h1 {
            font-size: 2.2rem;
            margin-top: 0.4em;
        }
        h2 {
            font-size: 1.7rem;
            border-left: 6px solid #2563eb;
            padding-left: 16px;
        }
        h3 {
            font-size: 1.3rem;
            color: #1e293b;
        }
        h4 {
            font-size: 1.1rem;
            color: #334155;
        }
        p {
            margin-bottom: 1.2em;
            color: #2d3a4a;
        }
        ul,
        ol {
            margin: 0.8em 0 1.6em 1.8em;
        }
        li {
            margin-bottom: 0.5em;
        }
        strong {
            color: #0f172a;
        }
        .container {
            background: #ffffff;
            border-radius: 24px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
            padding: 20px 24px 40px;
            margin: 16px 0 40px;
        }
        @media (min-width: 768px) {
            body {
                padding: 0 32px;
            }
            .container {
                padding: 32px 48px 60px;
                margin: 24px 0 48px;
            }
            h1 {
                font-size: 2.8rem;
            }
            h2 {
                font-size: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding: 40px 64px 80px;
            }
        }
        header {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0 10px;
            border-bottom: 2px solid #e2e8f0;
            position: relative;
        }
        .my-logo {
            font-size: 1.9rem;
            font-weight: 800;
            background: linear-gradient(135deg, #2563eb, #7c3aed);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: inline-block;
        }
        .my-logo:hover {
            text-decoration: none;
            opacity: 0.85;
        }
        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px 4px;
            z-index: 110;
        }
        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: #1e293b;
            border-radius: 4px;
            transition: 0.3s;
        }
        .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);
        }
        #navMenu {
            display: none;
            width: 100%;
            flex-direction: column;
            gap: 6px;
            padding: 16px 0 8px;
            background: #ffffff;
            border-top: 1px solid #e2e8f0;
            margin-top: 12px;
        }
        #navMenu.show {
            display: flex;
        }
        #navMenu a {
            padding: 10px 14px;
            border-radius: 10px;
            font-weight: 500;
            color: #1e293b;
            transition: background 0.2s, color 0.2s;
        }
        #navMenu a:hover {
            background: #eef2ff;
            color: #2563eb;
            text-decoration: none;
        }
        @media (min-width: 768px) {
            .hamburger {
                display: none;
            }
            #navMenu {
                display: flex !important;
                flex-direction: row;
                width: auto;
                border-top: none;
                padding: 0;
                margin-top: 0;
                gap: 4px;
            }
            #navMenu a {
                padding: 8px 16px;
                font-size: 0.95rem;
            }
            header {
                flex-wrap: nowrap;
                gap: 24px;
            }
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            font-size: 0.85rem;
            padding: 14px 0 6px;
            color: #64748b;
            list-style: none;
        }
        .breadcrumb li {
            display: inline;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 10px;
            color: #94a3b8;
            font-size: 1.1rem;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: #475569;
            font-weight: 500;
        }
        .search-wrap {
            display: flex;
            gap: 8px;
            margin: 20px 0 24px;
            max-width: 560px;
        }
        .search-wrap input {
            flex: 1;
            padding: 12px 18px;
            border: 2px solid #e2e8f0;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
            background: #f1f5f9;
        }
        .search-wrap input:focus {
            border-color: #2563eb;
            background: #ffffff;
        }
        .search-wrap button {
            padding: 12px 24px;
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s, transform 0.1s;
            font-size: 1rem;
        }
        .search-wrap button:hover {
            background: #1d4ed8;
            transform: scale(1.02);
        }
        .search-wrap button i {
            margin-right: 6px;
        }
        .feature-img {
            margin: 28px 0 32px;
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .feature-img figcaption {
            font-size: 0.85rem;
            color: #64748b;
            margin-top: 8px;
            text-align: center;
            font-style: italic;
        }
        .tip-card {
            background: #f0f4ff;
            border-left: 6px solid #2563eb;
            padding: 18px 22px;
            border-radius: 12px;
            margin: 24px 0;
        }
        .tip-card strong {
            color: #1e40af;
        }
        .interview-box {
            background: #fef3c7;
            border-radius: 16px;
            padding: 20px 24px;
            margin: 28px 0;
            border: 1px solid #fde68a;
        }
        .interview-box h4 {
            margin-top: 0;
            color: #92400e;
        }
        .stat-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
            margin: 20px 0 28px;
        }
        .stat-item {
            background: #f1f5f9;
            border-radius: 12px;
            padding: 18px 14px;
            text-align: center;
            font-weight: 600;
            border: 1px solid #e2e8f0;
        }
        .stat-item span {
            display: block;
            font-size: 1.8rem;
            color: #2563eb;
            font-weight: 800;
        }
        @media (min-width: 600px) {
            .stat-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .feedback-section {
            margin-top: 48px;
            padding-top: 32px;
            border-top: 2px solid #e2e8f0;
        }
        .feedback-grid {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }
        @media (min-width: 768px) {
            .feedback-grid {
                flex-direction: row;
                gap: 40px;
            }
            .feedback-grid>div {
                flex: 1;
            }
        }
        .feedback-card {
            background: #f8fafc;
            border-radius: 16px;
            padding: 22px 24px;
            border: 1px solid #e2e8f0;
        }
        .feedback-card h3 {
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
        }
        .feedback-card textarea,
        .feedback-card input {
            width: 100%;
            padding: 12px 14px;
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            font-size: 1rem;
            font-family: inherit;
            outline: none;
            transition: border 0.2s;
            background: #ffffff;
            margin: 8px 0 12px;
            resize: vertical;
        }
        .feedback-card textarea:focus,
        .feedback-card input:focus {
            border-color: #2563eb;
        }
        .feedback-card button {
            padding: 10px 24px;
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            font-size: 0.95rem;
        }
        .feedback-card button:hover {
            background: #1d4ed8;
        }
        .star-rating {
            display: flex;
            gap: 8px;
            font-size: 1.7rem;
            cursor: pointer;
            margin: 6px 0 12px;
            direction: rtl;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #d1d5db;
            transition: color 0.15s;
            cursor: pointer;
        }
        .star-rating label:hover,
        .star-rating label:hover~label,
        .star-rating input:checked~label {
            color: #f59e0b;
        }
        footer {
            padding: 32px 0 20px;
            border-top: 2px solid #e2e8f0;
            margin-top: 40px;
            font-size: 0.92rem;
            color: #475569;
        }
        footer .copyright {
            text-align: center;
            padding: 16px 0 0;
            font-size: 0.85rem;
            color: #64748b;
            border-top: 1px solid #e2e8f0;
            margin-top: 20px;
        }
        friend-link {
            display: block;
            padding: 16px 0 8px;
        }
        friend-link a {
            display: inline-block;
            margin: 0 16px 8px 0;
            padding: 6px 14px;
            background: #f1f5f9;
            border-radius: 30px;
            font-size: 0.9rem;
            border: 1px solid #e2e8f0;
            transition: background 0.2s;
        }
        friend-link a:hover {
            background: #e2e8f0;
            text-decoration: none;
        }
        .last-updated {
            font-size: 0.85rem;
            color: #64748b;
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 12px 0 20px;
            padding: 8px 16px;
            background: #f1f5f9;
            border-radius: 30px;
            width: fit-content;
        }
        .last-updated i {
            color: #2563eb;
        }
        .code-block {
            background: #1e293b;
            color: #e2e8f0;
            padding: 16px 20px;
            border-radius: 12px;
            font-family: 'Courier New', monospace;
            font-size: 0.9rem;
            overflow-x: auto;
            margin: 16px 0;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 20px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        th,
        td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid #e2e8f0;
        }
        th {
            background: #f1f5f9;
            font-weight: 600;
        }
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: #2563eb;
            color: #fff;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
            transition: transform 0.2s, opacity 0.3s;
            opacity: 0.7;
            z-index: 200;
        }
        .back-top:hover {
            transform: translateY(-4px);
            opacity: 1;
            text-decoration: none;
            color: #fff;
        }
        @media (max-width: 480px) {
            .container {
                padding: 14px 14px 32px;
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.3rem;
                padding-left: 10px;
            }
            .stat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .search-wrap {
                flex-wrap: wrap;
            }
            .search-wrap button {
                width: 100%;
            }
        }