* { box-sizing: border-box; margin: 0; padding: 0; }
        :root {
            --primary: #7C3AED; --primary-dark: #5B21B6; --accent: #F59E0B; --accent-light: #FBBF24;
            --dark: #0F172A; --dark-2: #1E293B; --gray: #64748B; --light: #F8FAFC; --white: #FFFFFF;
            --border: #E2E8F0; --text: #1E293B; --text-light: #475569; --shadow: 0 4px 24px rgba(0,0,0,.06);
            --radius: 16px; --transition: all .3s ease;
        }
        html { scroll-behavior: smooth; }
        body { font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; color: var(--text); line-height: 1.75; background: var(--white); overflow-x: hidden; }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; border-radius: 12px; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .site-header { background: var(--dark); padding: 12px 0; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 20px rgba(0,0,0,.3); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; }
        .my-logo { font-size: 1.8rem; font-weight: 800; color: var(--accent); letter-spacing: -1px; line-height: 1.2; }
        .my-logo span { color: var(--white); }
        .my-logo small { display: block; font-size: .65rem; color: var(--gray); font-weight: 400; letter-spacing: .5px; }
        .main-nav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
        .main-nav a { color: #cbd5e1; padding: 8px 16px; border-radius: 8px; font-size: .875rem; font-weight: 500; }
        .main-nav a:hover { color: var(--accent); background: rgba(255,255,255,.05); }
        .hamburger { display: none; background: none; border: none; color: var(--white); font-size: 1.5rem; cursor: pointer; padding: 4px 8px; }
        .hamburger:focus { outline: 2px solid var(--accent); }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav { display: none; width: 100%; flex-direction: column; padding: 16px 0; gap: 8px; }
            .main-nav.open { display: flex; }
            .main-nav a { width: 100%; text-align: center; padding: 12px; }
        }
        .breadcrumb { background: var(--light); padding: 12px 0; border-bottom: 1px solid var(--border); font-size: .875rem; }
        .breadcrumb .container { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
        .breadcrumb a { color: var(--text-light); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb .sep { color: var(--gray); }
        .hero { background: linear-gradient(135deg, var(--dark) 0%, #1e1b4b 40%, var(--primary-dark) 100%); color: var(--white); padding: 64px 0; text-align: center; position: relative; overflow: hidden; }
        .hero::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: radial-gradient(circle at 70% 20%, rgba(245,158,11,.15) 0%, transparent 60%); }
        .hero h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; margin-bottom: 16px; line-height: 1.2; }
        .hero p { font-size: clamp(1rem, 2vw, 1.2rem); opacity: .9; max-width: 720px; margin: 0 auto 24px; }
        .hero .badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.1); padding: 8px 20px; border-radius: 50px; font-size: .875rem; border: 1px solid rgba(255,255,255,.15); margin-bottom: 16px; }
        .section { padding: 4rem 0; }
        .section-alt { background: var(--light); }
        .section-title { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 700; color: var(--dark); margin-bottom: 16px; position: relative; padding-bottom: 12px; }
        .section-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 60px; height: 4px; border-radius: 2px; background: linear-gradient(90deg, var(--accent), var(--primary)); }
        .section-subtitle { font-size: 1.05rem; color: var(--text-light); margin-bottom: 2rem; max-width: 800px; }
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: start; }
        .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 2rem; align-items: start; }
        .grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 1.5rem; align-items: start; }
        @media (max-width: 768px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }
        .card { background: var(--white); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); border: 1px solid var(--border); transition: var(--transition); }
        .card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,0,0,.1); }
        .card h4 { color: var(--primary); font-size: .95rem; text-transform: uppercase; letter-spacing: .5px; margin-bottom: 8px; }
        .card h3 { font-size: 1.3rem; color: var(--dark); margin-bottom: 12px; }
        .card p { color: var(--text-light); font-size: .95rem; margin-bottom: 12px; }
        .table-wrapper { overflow-x: auto; margin: 1.5rem 0; border-radius: 12px; box-shadow: var(--shadow); }
        .comparison-table { width: 100%; border-collapse: collapse; min-width: 600px; }
        .comparison-table th { background: var(--dark); color: var(--white); padding: 16px; text-align: left; font-weight: 600; }
        .comparison-table td { padding: 14px 16px; border-bottom: 1px solid var(--border); }
        .comparison-table tr:nth-child(even) { background: var(--light); }
        .comparison-table tr:hover td { background: rgba(124,58,237,.04); }
        .callout { background: linear-gradient(135deg, #fef3c7, #fef9c3); border-left: 4px solid var(--accent); padding: 20px 24px; border-radius: 0 12px 12px 0; margin: 1.5rem 0; }
        .callout strong { color: var(--dark); }
        .content-figure { margin: 2rem 0; text-align: center; }
        .content-figure img { width: 100%; max-height: 500px; object-fit: cover; border-radius: 16px; box-shadow: var(--shadow); }
        .content-figure figcaption { font-size: .875rem; color: var(--text-light); margin-top: 10px; font-style: italic; }
        .form-group { margin-bottom: 1rem; }
        .form-group label { display: block; font-weight: 600; margin-bottom: 6px; color: var(--dark); font-size: .9rem; }
        .form-group input, .form-group textarea, .form-group select { width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: 8px; font-family: inherit; font-size: .95rem; transition: var(--transition); background: var(--light); }
        .form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(124,58,237,.1); }
        .btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 24px; border-radius: 8px; border: none; cursor: pointer; font-weight: 600; font-size: .95rem; transition: var(--transition); }
        .btn-primary { background: var(--primary); color: var(--white); }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
        .btn-accent { background: var(--accent); color: var(--dark); }
        .btn-accent:hover { background: var(--accent-light); transform: translateY(-2px); }
        .btn-block { width: 100%; justify-content: center; }
        .star-rating { display: inline-flex; flex-direction: row-reverse; gap: 4px; }
        .star-rating input { display: none; }
        .star-rating label { font-size: 1.5rem; color: var(--border); cursor: pointer; transition: var(--transition); }
        .star-rating input:checked ~ label, .star-rating label:hover, .star-rating label:hover ~ label { color: var(--accent); }
        .faq-item { margin-bottom: 1rem; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
        .faq-question { padding: 18px 20px; background: var(--light); cursor: pointer; font-weight: 600; display: flex; justify-content: space-between; align-items: center; }
        .faq-question:hover { background: #f1f5f9; }
        .faq-answer { padding: 0 20px; display: none; }
        .faq-answer.open { padding: 0 20px 18px; display: block; }
        .site-footer { background: var(--dark); color: #94a3b8; padding: 48px 0 0; margin-top: 2rem; }
        .site-footer a { color: #94a3b8; }
        .site-footer a:hover { color: var(--accent); }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 24px 0; text-align: center; font-size: .875rem; margin-top: 32px; }
        friend-link { display: block; padding: 12px 0; font-size: .9rem; }
        friend-link a { margin: 0 8px; }
        .search-section { background: var(--dark); padding: 32px 0; text-align: center; }
        .search-form { display: flex; max-width: 500px; margin: 0 auto; gap: 8px; }
        .search-form input { flex: 1; padding: 12px 20px; border-radius: 50px; border: none; font-size: 1rem; }
        .search-form button { padding: 12px 28px; border-radius: 50px; border: none; background: var(--accent); color: var(--dark); font-weight: 700; cursor: pointer; }
        .author-box { display: flex; align-items: center; gap: 20px; background: var(--light); border-radius: 16px; padding: 24px; margin: 2rem 0; border: 1px solid var(--border); }
        .author-avatar { width: 56px; height: 56px; background: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: white; font-size: 1.5rem; font-weight: 700; }
        .text-center { text-align: center; }
        .mt-0 { margin-top: 0; } .mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 2rem; } .mt-4 { margin-top: 3rem; }
        .mb-0 { margin-bottom: 0; } .mb-1 { margin-bottom: .5rem; } .mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 2rem; } .mb-4 { margin-bottom: 3rem; }
        .text-primary { color: var(--primary); } .text-accent { color: var(--accent); } .text-bold { font-weight: 700; }
        .updated-badge { display: inline-flex; align-items: center; gap: 6px; background: #ecfdf5; color: #047857; padding: 6px 16px; border-radius: 50px; font-size: .8rem; font-weight: 600; border: 1px solid #a7f3d0; }
        @media (max-width: 768px) {
            .hero { padding: 40px 0; }
            .section { padding: 2.5rem 0; }
            .author-box { flex-direction: column; text-align: center; }
        }