*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Roboto, system-ui, -apple-system, 'Helvetica Neue', sans-serif;
            background: #f8fafc;
            color: #1e293b;
            line-height: 1.7;
            padding: 0;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: #2563eb;
            text-decoration: none;
            transition: color 0.2s, border-color 0.2s;
        }
        a:hover,
        a:focus-visible {
            color: #1d4ed8;
            text-decoration: underline;
        }
        ul,
        ol {
            padding-left: 1.5rem;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: #0f172a;
            margin-top: 1.6rem;
            margin-bottom: 0.6rem;
        }
        h1 {
            font-size: 2.2rem;
            margin-top: 0.2rem;
        }
        h2 {
            font-size: 1.7rem;
            border-bottom: 3px solid #e2e8f0;
            padding-bottom: 0.3rem;
        }
        h3 {
            font-size: 1.3rem;
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.2rem;
        }
        .site-header {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
            color: #f1f5f9;
            padding: 0.6rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.5rem 1rem;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #facc15;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
            display: flex;
            align-items: center;
            gap: 0.4rem;
            transition: transform 0.2s;
        }
        .my-logo:hover {
            transform: scale(1.02);
            text-decoration: none;
            color: #fbbf24;
        }
        .my-logo i {
            font-size: 1.6rem;
            color: #60a5fa;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid #facc15;
            color: #facc15;
            font-size: 1.6rem;
            padding: 0.3rem 0.7rem;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
        }
        .nav-toggle:hover {
            background: rgba(250, 204, 21, 0.15);
        }
        .nav-menu {
            display: flex;
            gap: 0.2rem 1.2rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .nav-menu a {
            color: #e2e8f0;
            font-weight: 500;
            padding: 0.3rem 0;
            border-bottom: 2px solid transparent;
            transition: border-color 0.2s, color 0.2s;
            font-size: 0.95rem;
        }
        .nav-menu a:hover {
            border-bottom-color: #facc15;
            color: #facc15;
            text-decoration: none;
        }
        .nav-menu a.active {
            border-bottom-color: #facc15;
            color: #facc15;
        }
        .breadcrumb {
            background: #e9edf2;
            padding: 0.5rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0;
            margin: 0;
            gap: 0.3rem 0.6rem;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin-right: 0.6rem;
            color: #64748b;
            font-weight: 700;
        }
        .breadcrumb a {
            color: #2563eb;
        }
        .breadcrumb .current {
            color: #475569;
            font-weight: 500;
        }
        .search-wrap {
            background: #fff;
            padding: 1.2rem 0;
            border-bottom: 1px solid #e2e8f0;
        }
        .search-form {
            display: flex;
            gap: 0.6rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 0.7rem 1.2rem;
            border: 2px solid #cbd5e1;
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }
        .search-form input:focus {
            border-color: #2563eb;
        }
        .search-form button {
            background: #2563eb;
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 0.7rem 1.8rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover {
            background: #1d4ed8;
        }
        .main-content {
            padding: 2rem 0 3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        @media(min-width:992px) {
            .content-grid {
                grid-template-columns: 2fr 1fr;
            }
        }
        .article-body {
            background: #fff;
            border-radius: 20px;
            padding: 1.8rem 1.5rem;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
        }
        .article-body h2 {
            margin-top: 2.4rem;
        }
        .article-body h3 {
            margin-top: 1.8rem;
        }
        .article-body h4 {
            margin-top: 1.4rem;
        }
        .article-body img {
            border-radius: 16px;
            margin: 1.6rem auto;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            max-width: 100%;
        }
        .feature-img {
            width: 100%;
            max-width: 720px;
        }
        .last-updated {
            display: inline-block;
            background: #eef2ff;
            color: #4338ca;
            padding: 0.2rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.2rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 1.5rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
        }
        .sidebar-card h3 {
            margin-top: 0;
            font-size: 1.2rem;
            border-bottom: 2px solid #e2e8f0;
            padding-bottom: 0.5rem;
        }
        .link-list {
            list-style: none;
            padding: 0;
            margin: 0.8rem 0 0;
        }
        .link-list li {
            padding: 0.35rem 0;
            border-bottom: 1px solid #f1f5f9;
        }
        .link-list li:last-child {
            border-bottom: none;
        }
        .link-list a {
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .link-list a i {
            width: 1.2rem;
            color: #64748b;
            font-size: 0.85rem;
        }
        .rating-area {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.8rem 1.5rem;
            background: #f8fafc;
            padding: 1rem 1.2rem;
            border-radius: 14px;
            margin: 1.2rem 0;
        }
        .stars {
            display: flex;
            gap: 0.25rem;
            font-size: 1.6rem;
            color: #facc15;
            cursor: pointer;
        }
        .stars i:hover,
        .stars i.active {
            color: #f59e0b;
            transform: scale(1.08);
        }
        .rating-score {
            font-weight: 700;
            font-size: 1.2rem;
            color: #0f172a;
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            margin-top: 1.2rem;
        }
        .comment-form textarea {
            padding: 0.8rem 1rem;
            border: 2px solid #cbd5e1;
            border-radius: 12px;
            resize: vertical;
            min-height: 90px;
            font-family: inherit;
            font-size: 0.95rem;
            transition: border-color 0.3s;
        }
        .comment-form textarea:focus {
            border-color: #2563eb;
            outline: none;
        }
        .comment-form .form-row {
            display: flex;
            gap: 0.8rem;
            flex-wrap: wrap;
        }
        .comment-form .form-row input {
            flex: 1;
            padding: 0.7rem 1rem;
            border: 2px solid #cbd5e1;
            border-radius: 12px;
            font-size: 0.95rem;
            transition: border-color 0.3s;
        }
        .comment-form .form-row input:focus {
            border-color: #2563eb;
            outline: none;
        }
        .comment-form button {
            align-self: flex-start;
            background: #2563eb;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
        }
        .comment-form button:hover {
            background: #1d4ed8;
        }
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        @media(min-width:768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }
        .footer-col h4 {
            color: #f1f5f9;
            margin-top: 0;
            margin-bottom: 0.8rem;
            font-size: 1.1rem;
        }
        .footer-col a {
            color: #93c5fd;
        }
        .footer-col a:hover {
            color: #facc15;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            padding: 0.2rem 0;
        }
        .copyright {
            border-top: 1px solid #1e293b;
            margin-top: 2rem;
            padding-top: 1.2rem;
            text-align: center;
            font-size: 0.9rem;
            color: #64748b;
        }
        friend-link {
            display: block;
            margin-top: 0.8rem;
            padding: 0.6rem 1rem;
            background: #1a2332;
            border-radius: 10px;
            font-size: 0.95rem;
        }
        friend-link a {
            color: #93c5fd;
            margin: 0 0.3rem;
        }
        @media(max-width:768px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 1rem 0 0.5rem;
                gap: 0.4rem;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                padding: 0.5rem 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            }
            h1 {
                font-size: 1.7rem;
            }
            h2 {
                font-size: 1.4rem;
            }
            .article-body {
                padding: 1.2rem 1rem;
            }
            .search-form {
                flex-direction: column;
            }
            .rating-area {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media(max-width:480px) {
            .my-logo {
                font-size: 1.3rem;
            }
            .my-logo i {
                font-size: 1.2rem;
            }
            .container {
                padding: 0 0.8rem;
            }
        }
        .highlight-box {
            background: #fef9c3;
            border-left: 5px solid #facc15;
            padding: 1rem 1.3rem;
            border-radius: 0 12px 12px 0;
            margin: 1.2rem 0;
        }
        .highlight-box strong {
            color: #854d0e;
        }
        .emoji-big {
            font-size: 1.8rem;
            margin-right: 0.3rem;
        }
        .btn-outline {
            display: inline-block;
            border: 2px solid #2563eb;
            color: #2563eb;
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.2s;
        }
        .btn-outline:hover {
            background: #2563eb;
            color: #fff;
            text-decoration: none;
        }
        .pro-tip {
            background: #ecfdf5;
            border-left: 5px solid #10b981;
            padding: 1rem 1.3rem;
            border-radius: 0 12px 12px 0;
            margin: 1.2rem 0;
        }
        .pro-tip strong {
            color: #065f46;
        }
        .interview-block {
            background: #f1f5f9;
            padding: 1.3rem;
            border-radius: 16px;
            margin: 1.4rem 0;
            border: 1px solid #e2e8f0;
        }
        .interview-block .q {
            font-weight: 700;
            color: #1e293b;
        }
        .interview-block .a {
            margin-left: 1rem;
            color: #334155;
        }
        .table-wrap {
            overflow-x: auto;
            margin: 1.2rem 0;
        }
        .table-wrap table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        .table-wrap th,
        .table-wrap td {
            padding: 0.6rem 0.8rem;
            border: 1px solid #e2e8f0;
            text-align: left;
        }
        .table-wrap th {
            background: #f1f5f9;
            font-weight: 600;
        }
        .table-wrap tr:nth-child(even) {
            background: #f8fafc;
        }