:root{--paper:#f2eee7;--ink:#211c18;--muted:#756e65;--line:rgba(33,28,24,.15)}*{box-sizing:border-box}html,body{height:100%;margin:0}body{overflow:hidden;display:grid;grid-template-rows:auto 1fr auto;color:var(--ink);background:radial-gradient(circle at 50% 10%,#e9e4dc,#cbc4ba);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}header{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;font-size:11px;letter-spacing:.12em;text-transform:uppercase}header a{color:inherit;text-decoration:none}header span{color:var(--muted)}main{min-height:0;display:grid;place-items:center;padding:8px 12px;overflow:hidden}#book{touch-action:pan-y}nav{z-index:5;display:flex;justify-content:center;align-items:center;gap:8px;padding:12px 16px 20px}nav button{width:44px;height:44px;border:1px solid var(--line);border-radius:50%;color:var(--ink);background:rgba(242,238,231,.8);font-size:28px;cursor:pointer}nav button:disabled{opacity:.3;cursor:default}#counter{min-width:70px;text-align:center;color:var(--muted);font-size:11px;letter-spacing:.1em}:focus-visible{outline:2px solid var(--ink);outline-offset:3px}@media(max-width:600px){header{padding:12px 14px}main{padding:4px}nav{padding-bottom:max(12px,env(safe-area-inset-bottom))}}