.chapters-container{padding:20px;max-width:1200px;margin:0 auto}.chapters-heading{font-size:2rem;text-align:center;margin-bottom:20px;color:#2c3e50;margin-top:3rem}.chapters-list{display:flex;flex-wrap:wrap;gap:15px;justify-content:center}.chapters-card{border:2px solid #316ff6;border-radius:30px;padding:15px 20px;text-align:center;cursor:pointer;background-color:#f9f9f9;transition:all .3s ease;flex:1 1 calc(25% - 30px);max-width:calc(25% - 30px);box-shadow:0 4px 6px #0000001a}.chapters-card:hover{background-color:#3498db;color:#fff;transform:translateY(-5px);box-shadow:0 8px 12px #0003}.chapters-card:active{transform:translateY(0);box-shadow:0 4px 6px #0000001a}@media (max-width: 768px){.chapters-card{flex:1 1 calc(50% - 30px);max-width:calc(50% - 30px)}}@media (max-width: 480px){.chapters-card{flex:1 1 100%;max-width:100%}}body{font-family:Arial,sans-serif;background-color:#f4f4f9;color:#333}.container{max-width:1200px;margin:0 auto;padding:20px;text-align:center}h1{font-size:2.5rem;margin-bottom:20px;color:#2c3e50;font-weight:700}.book-list{display:flex;flex-wrap:wrap;justify-content:center;gap:20px}.book-card{color:#000;padding:20px;text-decoration:none;font-size:1.2rem;transition:background-color .3s ease;width:200px;text-align:center;border:2px solid #316ff6;font-weight:700;border-radius:30px}.book-card:hover{background-color:#2980b9}@media (max-width: 768px){h1{font-size:2rem}.book-card{width:150px;padding:15px;font-size:1rem}}@media (max-width: 480px){h1{font-size:1.5rem}.book-card{width:100%;margin-bottom:10px;font-size:1.2rem}}:root{--pp-blue: #1a56db;--pp-blue-dark: #1240a8;--pp-blue-light: #e8f0fe;--pp-blue-mid: #3b82f6;--pp-text: #0f172a;--pp-text-muted: #64748b;--pp-text-light: #94a3b8;--pp-surface: #ffffff;--pp-surface-2: #f8fafc;--pp-surface-3: #f1f5f9;--pp-border: rgba(15, 23, 42, .08);--pp-border-mid: rgba(15, 23, 42, .12);--pp-topbar-h: 60px;--pp-drawer-w: 320px;--pp-radius: 12px;--pp-radius-sm: 8px;--pp-shadow-sm: 0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px rgba(0, 0, 0, .06);--pp-shadow-lg: 0 20px 60px rgba(0, 0, 0, .18), 0 8px 24px rgba(0, 0, 0, .12);--pp-transition: cubic-bezier(.4, 0, .2, 1)}.pp-topbar *,.pp-drawer *,.pp-backdrop{box-sizing:border-box;margin:0;padding:0}.pp-topbar{position:fixed;top:0;left:0;right:0;height:var(--pp-topbar-h);background:var(--pp-blue);display:flex;align-items:center;justify-content:space-between;padding:0 16px 0 20px;z-index:9000;box-shadow:0 1px #ffffff14,var(--pp-shadow-sm)}.pp-logo{display:flex;align-items:center;text-decoration:none;-webkit-user-select:none;user-select:none}.pp-logo__text{font-family:Arial,sans-serif;font-size:1.8rem;font-weight:700;color:#fff;letter-spacing:normal;line-height:1}.pp-logo__tld{font-size:1.8rem;font-weight:700;color:#fff;letter-spacing:normal;vertical-align:baseline;margin-left:0}.pp-topbar__right{display:flex;align-items:center;gap:4px}.pp-social-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;color:#ffffffd9;font-size:18px;transition:background .2s,color .2s,transform .2s;text-decoration:none}.pp-social-btn:hover{background:#ffffff26;color:#fff;transform:scale(1.08)}.pp-social-btn--tg{color:#ffffffbf}.pp-hamburger{display:flex;flex-direction:column;justify-content:center;align-items:center;width:40px;height:40px;gap:0;background:#ffffff1f;border:1px solid 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.12s}.md-x:hover{background:#e4e7ec}.md-x svg{width:15px;height:15px}.md-icon{width:58px;height:58px;margin:0 auto 16px;border-radius:16px;display:flex;align-items:center;justify-content:center;color:#fff}.md-icon svg{width:30px;height:30px}.md-icon-soon,.md-icon-info{background:linear-gradient(135deg,#1877f2,#1156b8)}.md-icon-success{background:linear-gradient(135deg,#22c55e,#15a34a)}.md-title{font-size:18px;font-weight:800;color:#111827;line-height:1.3;margin-bottom:8px}.md-message{font-size:13px;color:#6b7280;line-height:1.6;margin-bottom:22px}.md-btn{width:100%;background:#1877f2;color:#fff;border:none;border-radius:12px;padding:13px;font-family:Inter,sans-serif;font-size:14px;font-weight:800;cursor:pointer;transition:background .15s,transform .12s}.md-btn:hover{background:#1156b8}.md-btn:active{transform:scale(.98)}@media (min-width: 768px){.md-box{max-width:400px;padding:36px 30px 28px}.md-title{font-size:20px}.md-message{font-size:14px}}