*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f5f7fa;
            color: #1a1a2e;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; border-radius: 12px; }
        a { color: #0066cc; text-decoration: none; transition: color 0.2s; }
        a:hover, a:focus { color: #004499; text-decoration: underline; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: #0f0f1a; }
        h1 { font-size: 2.4rem; margin-bottom: 1rem; }
        h2 { font-size: 1.8rem; margin: 2.4rem 0 1rem; border-bottom: 3px solid #e0e7ef; padding-bottom: 0.5rem; }
        h3 { font-size: 1.35rem; margin: 1.8rem 0 0.8rem; color: #16213e; }
        h4 { font-size: 1.1rem; margin: 1.2rem 0 0.5rem; color: #1a1a2e; }
        p { margin-bottom: 1.2rem; }
        ul, ol { margin: 0.8rem 0 1.2rem 1.8rem; }
        li { margin-bottom: 0.4rem; }
        blockquote {
            border-left: 5px solid #0066cc;
            background: #f0f4ff;
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #2c3e50;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .badge {
            display: inline-block;
            background: #0066cc;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }
        .badge.green { background: #1e7e34; }
        .badge.amber { background: #d39e00; }
        .site-header {
            background: linear-gradient(135deg, #0f0f1a 0%, #1a1a3e 100%);
            color: #fff;
            padding: 0.8rem 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;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .my-logo i { color: #4da6ff; font-size: 1.6rem; }
        .my-logo span { color: #4da6ff; }
        .my-logo:hover { text-decoration: none; color: #fff; }
        .nav-main {
            display: flex;
            align-items: center;
            gap: 0.2rem;
        }
        .nav-main a {
            color: #cfd8e6;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: background 0.2s, color 0.2s;
        }
        .nav-main a:hover, .nav-main a.active {
            background: rgba(255,255,255,0.12);
            color: #fff;
            text-decoration: none;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
            border-radius: 6px;
            transition: background 0.2s;
        }
        .hamburger:hover { background: rgba(255,255,255,0.1); }
        .breadcrumb {
            background: #e9ecf3;
            padding: 0.6rem 0;
            font-size: 0.85rem;
            border-bottom: 1px solid #dce1eb;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.3rem;
            margin: 0;
        }
        .breadcrumb li+li::before {
            content: "›";
            margin: 0 0.5rem;
            color: #7f8c8d;
        }
        .breadcrumb a { color: #0066cc; }
        .breadcrumb .current { color: #4a5568; font-weight: 500; }
        .hero {
            background: linear-gradient(145deg, #eef2f9 0%, #dce4f0 100%);
            padding: 3rem 0 2.5rem;
            border-bottom: 1px solid #d0d9e6;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: center;
        }
        .hero h1 { font-size: 2.6rem; margin-bottom: 0.5rem; }
        .hero .subtitle { font-size: 1.15rem; color: #2c3e50; margin-bottom: 1.5rem; }
        .hero-meta { display: flex; flex-wrap: wrap; gap: 1.2rem; font-size: 0.9rem; color: #4a5568; }
        .hero-meta i { margin-right: 0.3rem; color: #0066cc; }
        .hero-img {
            border-radius: 16px;
            box-shadow: 0 12px 40px rgba(0,0,0,0.12);
            width: 100%;
            object-fit: cover;
        }
        .search-section {
            background: #fff;
            padding: 1.8rem 0;
            border-bottom: 1px solid #e2e8f0;
        }
        .search-form {
            display: flex;
            gap: 0.6rem;
            max-width: 640px;
            margin: 0 auto;
        }
        .search-form input {
            flex: 1;
            padding: 0.75rem 1.2rem;
            border: 2px solid #dce1eb;
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.2s;
        }
        .search-form input:focus { border-color: #0066cc; }
        .search-form button {
            background: #0066cc;
            color: #fff;
            border: none;
            border-radius: 40px;
            padding: 0.75rem 1.8rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .search-form button:hover { background: #004499; }
        .main-content {
            padding: 2.5rem 0 3rem;
            background: #fff;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        .article-body p, .article-body li { font-size: 1.05rem; color: #2d3748; }
        .article-body a { font-weight: 500; }
        .sidebar {
            position: sticky;
            top: 90px;
            align-self: start;
        }
        .sidebar-card {
            background: #f8fafc;
            border-radius: 16px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            border: 1px solid #e2e8f0;
        }
        .sidebar-card h3 { font-size: 1.1rem; margin-top: 0; border: none; padding: 0; }
        .sidebar-card ul { list-style: none; margin: 0.8rem 0 0; }
        .sidebar-card li { margin-bottom: 0.5rem; }
        .sidebar-card a { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.2rem 0 1.8rem;
            font-size: 0.95rem;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0,0,0,0.06);
        }
        .data-table th {
            background: #0f0f1a;
            color: #fff;
            padding: 0.75rem 1rem;
            text-align: left;
            font-weight: 600;
        }
        .data-table td {
            padding: 0.7rem 1rem;
            border-bottom: 1px solid #e2e8f0;
            background: #fff;
        }
        .data-table tr:last-child td { border-bottom: none; }
        .data-table tr:hover td { background: #f1f5fe; }
        .feedback-section {
            background: #f8fafc;
            border-radius: 16px;
            padding: 2rem;
            margin: 2.5rem 0;
            border: 1px solid #e2e8f0;
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .feedback-form label {
            display: block;
            font-weight: 600;
            margin-bottom: 0.3rem;
            font-size: 0.9rem;
        }
        .feedback-form input, .feedback-form textarea, .feedback-form select {
            width: 100%;
            padding: 0.7rem 1rem;
            border: 2px solid #dce1eb;
            border-radius: 10px;
            font-size: 0.95rem;
            outline: none;
            transition: border 0.2s;
            background: #fff;
        }
        .feedback-form input:focus, .feedback-form textarea:focus { border-color: #0066cc; }
        .feedback-form textarea { resize: vertical; min-height: 90px; }
        .feedback-form .btn {
            background: #0f0f1a;
            color: #fff;
            border: none;
            padding: 0.7rem 2rem;
            border-radius: 40px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .feedback-form .btn:hover { background: #2a2a4a; }
        .star-rating { display: flex; gap: 0.3rem; font-size: 1.6rem; cursor: pointer; 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: #f5b342; }
        .site-footer {
            background: #0f0f1a;
            color: #b0bccd;
            padding: 2.5rem 0 1.2rem;
            border-top: 3px solid #1a1a3e;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 1.8rem;
        }
        .site-footer h4 { color: #fff; font-size: 1rem; margin-bottom: 0.8rem; border: none; padding: 0; }
        .site-footer a { color: #8fa8c8; }
        .site-footer a:hover { color: #fff; }
        .footer-bottom {
            border-top: 1px solid #2a2a4a;
            padding-top: 1.2rem;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
            font-size: 0.85rem;
        }
        friend-link {
            display: block;
            margin-top: 0.5rem;
        }
        friend-link a {
            display: inline-block;
            margin-right: 1.2rem;
            margin-bottom: 0.3rem;
        }
        @media (max-width: 992px) {
            .content-grid { grid-template-columns: 1fr; }
            .sidebar { position: static; }
            .hero-grid { grid-template-columns: 1fr; }
            .feedback-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.4rem; }
            .hero h1 { font-size: 1.8rem; }
            .nav-main {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #1a1a3e;
                padding: 1rem 0;
                margin-top: 0.8rem;
                border-radius: 12px;
            }
            .nav-main.open { display: flex; }
            .hamburger { display: block; }
            .footer-grid { grid-template-columns: 1fr; }
            .header-inner { position: relative; }
            .data-table { font-size: 0.85rem; }
            .data-table th, .data-table td { padding: 0.5rem 0.6rem; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 14px; }
            .hero { padding: 1.8rem 0; }
            .feedback-section { padding: 1.2rem; }
            .search-form { flex-direction: column; }
            .search-form button { justify-content: center; }
        }
        .highlight { background: #fef9e7; padding: 0.2rem 0.4rem; border-radius: 4px; }
        .emoji-lg { font-size: 1.3rem; }
        .flex-center { display: flex; align-items: center; gap: 0.6rem; }
        .mt-1 { margin-top: 1rem; }
        .mb-1 { margin-bottom: 1rem; }
        .text-sm { font-size: 0.9rem; color: #5a6a7a; }
        .divider { border: none; height: 2px; background: linear-gradient(to right, #e2e8f0, transparent); margin: 2rem 0; }