:root{--bg: #ffffff;--fg: #14110e;--muted: #6b6459;--line: #e5e0d8;--accent: #7a5c3e;--danger: #a03c2e;--card: #faf7f2;color-scheme:light dark}@media(prefers-color-scheme:dark){:root{--bg: #121110;--fg: #e8e4dd;--muted: #9a938a;--line: #2b2926;--accent: #c79a6c;--danger: #d4705e;--card: #1b1a18}}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100dvh}body{background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;overscroll-behavior:contain;-webkit-text-size-adjust:100%}.app{display:flex;flex-direction:column;height:100dvh}.screen{flex:1;overflow-y:auto;overscroll-behavior:contain;padding:0 16px calc(16px + env(safe-area-inset-bottom))}.topbar{display:flex;align-items:center;gap:12px;padding:calc(12px + env(safe-area-inset-top)) 16px 12px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--bg);z-index:2}.topbar h1{font-size:17px;margin:0;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tabs{display:flex;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);background:var(--bg)}.tabs a{flex:1;text-align:center;padding:12px 4px;color:var(--muted);text-decoration:none;font-size:13px}.tabs a[aria-current=page]{color:var(--accent);font-weight:600}button{font:inherit;color:inherit;background:none;border:1px solid var(--line);border-radius:8px;padding:9px 14px;min-height:44px;cursor:pointer}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.plain{border:none;padding:8px}button:disabled{opacity:.5;cursor:default}input,select{font:inherit;color:inherit;background:var(--card);border:1px solid var(--line);border-radius:8px;padding:11px 12px;min-height:44px;width:100%}.list{list-style:none;margin:0;padding:0}.row{display:block;padding:14px 0;border-bottom:1px solid var(--line);color:inherit;text-decoration:none}.row .title{font-weight:600}.row .meta{color:var(--muted);font-size:13px;margin-top:3px}.progress{height:3px;background:var(--line);border-radius:2px;margin-top:8px;overflow:hidden}.progress>span{display:block;height:100%;background:var(--accent)}.banner{background:var(--card);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:8px;padding:12px;margin:12px 0}.banner .actions{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}.error{color:var(--danger)}.muted{color:var(--muted)}.empty{color:var(--muted);padding:40px 0;text-align:center}.stack{display:flex;flex-direction:column;gap:12px;padding:16px 0}.arc-heading{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:22px 0 4px}.reader{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;background:var(--reader-bg, #fff)}.reader iframe{flex:1;width:100%;border:0;display:block}.reader .zones{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;grid-template-columns:1fr 1fr 1fr}.reader .zones button{border:0;border-radius:0;background:transparent;-webkit-tap-highlight-color:transparent}.reader-chrome{position:absolute;left:0;right:0;background:var(--bg);border-color:var(--line);transition:transform .12s ease-out;z-index:3}.reader-chrome.top{top:0;border-bottom:1px solid var(--line);padding:calc(10px + env(safe-area-inset-top)) 12px 10px;display:flex;align-items:center;gap:10px}.reader-chrome.bottom{bottom:0;border-top:1px solid var(--line);padding:10px 12px calc(10px + env(safe-area-inset-bottom));display:flex;align-items:center;gap:10px;justify-content:space-between}.reader-chrome.hidden.top{transform:translateY(-110%)}.reader-chrome.hidden.bottom{transform:translateY(110%)}.reader-chrome .title{flex:1;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}@media(prefers-reduced-motion:reduce){.reader-chrome{transition:none}}