html { -webkit-text-size-adjust: 100%; overscroll-behavior-y: none; }
body { min-height: 100dvh; padding-bottom: env(safe-area-inset-bottom); }
button, a, input, textarea, select, summary { touch-action: manipulation; }
button, .nav, .tab, .secondary, .primary, .option { min-height: 44px; }
input, textarea, select { font-size: 16px; }
:focus-visible { outline: 3px solid #6d967b; outline-offset: 2px; }
@media (max-width: 760px) {
 .sidebar { position: sticky; top: 0; inset: auto; width: 100%; height: auto; padding: max(8px, env(safe-area-inset-top)) 10px 8px; border-right: 0; border-bottom: 1px solid var(--line); overflow: visible; z-index: 20; }
 .brand { padding: 4px 8px 8px; } .brand > div { display: block; }
 .side-label, .sidebar-bottom, .mini-card { display: none !important; }
 .sidebar nav { display: flex; overflow-x: auto; gap: 6px; padding: 0 0 3px; }
 .sidebar nav > .nav, .sidebar nav details { flex: 0 0 auto; }
 .sidebar nav > .nav { width: auto; min-height: 44px; padding: 10px 12px; font-size: 12px; }
 .sidebar nav > .nav span { width: auto; font-size: 15px; }
 .nav-group { flex: 0 0 auto; } .nav-group summary { min-height: 44px; display: flex; align-items: center; padding: 0 12px; font-size: 12px; }
 .main { margin-left: 0; min-width: 0; } .topbar { min-height: 76px; height: auto; padding: 12px 16px; }
 .content { padding: 16px 14px calc(28px + env(safe-area-inset-bottom)); }
 .lesson-layout { grid-template-columns: minmax(0, 1fr); } .lesson-aside { order: 0; }
 .lesson-main { overflow-wrap: anywhere; } .stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
 .stat strong { font-size: clamp(18px, 5vw, 24px); } .flash-actions, .section-head { flex-wrap: wrap; }
 .toast { right: 12px; bottom: calc(12px + env(safe-area-inset-bottom)); left: 12px; text-align: center; }
}
.keyboard-open .sidebar { display: none; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; } }

.apple-auth { background: #111; border-color: #111; color: #fff; }
.apple-auth:hover { background: #292929; }

body{font-family:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}

/* Public contact page spacing and mobile keyboard-safe form controls. */
.public-site{width:100%;overflow:hidden}.site-header,.site-hero,.site-intro,.site-learning,.site-contact,.site-footer{width:100%}
.contact-fields input,.contact-fields select,.contact-fields textarea{font-size:16px!important}
@media(max-width:650px){.contact-fields input,.contact-fields select,.contact-fields textarea{min-height:48px}.site-hero-art{max-width:100%}.site-footer>div{line-height:2}}

.public-site{width:100%;overflow:hidden}.contact-fields input,.contact-fields select,.contact-fields textarea{font-size:16px!important}@media(max-width:650px){.contact-fields input,.contact-fields select,.contact-fields textarea{min-height:48px}.site-hero-art{max-width:100%}.site-footer>div{line-height:2}}