*,*:before,*:after{box-sizing:border-box}:root{--bg: #0f172a;--card: #1e293b;--text: #f1f5f9;--muted: #94a3b8;--accent: #38bdf8;--ok: #4ade80;--bad: #f87171;--btn: #334155;--btn-b: #1e3a5f;font-synthesis:weight}html,body{margin:0;min-height:100%;min-height:100dvh;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,sans-serif;font-size:16px;line-height:1.45;-webkit-tap-highlight-color:transparent}.app-root{max-width:28rem;margin:0 auto;padding:1rem;padding-bottom:max(1.5rem,env(safe-area-inset-bottom));padding-top:max(.5rem,env(safe-area-inset-top))}.auth-header{display:flex;align-items:center;justify-content:flex-end;gap:.5rem;margin:0 0 .65rem}.auth-badge{font-size:.8rem;color:var(--muted)}.auth-signin,.auth-signout{background:transparent;border:1px solid #475569;color:var(--text);font-size:.78rem;font-family:inherit;border-radius:.5rem;padding:.4rem .7rem;cursor:pointer}.auth-signin:hover,.auth-signin:focus-visible,.auth-signout:hover,.auth-signout:focus-visible{border-color:var(--accent);outline:2px solid rgba(56,189,248,.3);outline-offset:1px}.auth-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#020617b3;display:flex;align-items:center;justify-content:center;padding:1rem;z-index:1000}.auth-modal{width:min(25rem,100%);background:var(--card);color:var(--text);border:1px solid #334155;border-radius:.8rem;box-shadow:0 12px 28px #00000059;padding:1rem}.auth-title{margin:0 0 .8rem;font-size:1rem}.auth-label{display:flex;flex-direction:column;gap:.3rem;font-size:.85rem;color:var(--muted)}.auth-email{background:#0b1220;color:var(--text);border:1px solid #475569;border-radius:.5rem;padding:.5rem .6rem;font:inherit}.auth-actions{margin-top:.85rem;display:flex;justify-content:flex-end;gap:.5rem}.auth-cancel,.auth-submit{font:inherit;border-radius:.5rem;cursor:pointer;padding:.45rem .8rem}.auth-cancel{background:transparent;border:1px solid #475569;color:var(--muted)}.auth-submit{background:var(--accent);color:#0b1220;border:1px solid var(--accent);font-weight:600}.auth-submit[disabled]{opacity:.6;cursor:wait}.auth-error{margin-top:.6rem;color:#fca5a5;font-size:.82rem}.auth-sent{padding:.4rem 0 .1rem}.auth-sent h3{margin:0 0 .4rem;font-size:.95rem}.auth-sent-body{margin:0;color:var(--muted);font-size:.85rem}.auth-empty{text-align:center;display:flex;flex-direction:column;align-items:center;gap:.9rem;padding:2rem 1rem}.auth-empty-line{margin:0;font-size:.95rem}.auth-empty-cta{font:inherit;padding:.55rem .9rem;border-radius:.5rem;border:1px solid var(--accent);background:var(--accent);color:#0b1220;font-weight:600;cursor:pointer}.app-toast{position:fixed;bottom:1.5rem;left:50%;transform:translate(-50%);background:#0b1220;color:#f8fafc;border:1px solid #334155;border-radius:.55rem;padding:.7rem 1rem;box-shadow:0 8px 24px #00000059;z-index:1200;font-size:.85rem;max-width:min(90vw,32rem);text-align:center}h1{font-size:1.15rem;font-weight:600;margin:0 0 .5rem;letter-spacing:.02em}.locale-bar{margin:0 0 .75rem;font-size:.85rem;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:.35rem .5rem}.locale-bar label{margin:0}.locale-bar select{background:var(--btn);color:var(--text);border:1px solid #475569;border-radius:.35rem;padding:.25rem .4rem;font:inherit}.subject-note{margin:0 0 .75rem;font-size:.8rem;line-height:1.4;color:var(--muted)}.quest-arc{margin:0 0 .75rem;padding:.65rem .75rem;font-size:.88rem;line-height:1.4;border-left:3px solid var(--accent);background:color-mix(in srgb,var(--accent) 8%,var(--card));border-radius:.25rem}.quest-arc__head{font-size:.75rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin-bottom:.2rem}.quest-arc__step{font-weight:600}.quest-arc__target{margin-top:.25rem;font-size:.8rem;color:var(--muted)}.quest-arc--done{border-left-color:var(--ok);background:color-mix(in srgb,var(--ok) 8%,var(--card));font-size:.85rem;color:var(--muted)}.gm-hint{margin:0 0 .75rem;font-size:.8rem;line-height:1.4;color:var(--muted)}.card{background:var(--card);border-radius:1rem;padding:1.1rem 1rem 1.25rem;box-shadow:0 4px 24px #00000040;margin-bottom:1rem}.stats{display:flex;flex-wrap:wrap;gap:.5rem 1rem;font-size:.85rem;color:var(--muted);margin-bottom:.9rem}.topic{display:block;font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);margin-bottom:.4rem}.stem{font-size:.95rem;margin:0 0 1rem;white-space:pre-wrap}.options{display:flex;flex-direction:column;gap:.5rem}.opt{text-align:left;min-height:2.75rem;border:none;border-radius:.75rem;padding:.6rem .85rem;background:var(--btn);color:var(--text);font-size:.9rem;font-family:inherit;cursor:pointer;line-height:1.3;transition:background .12s,transform .05s}.opt:active{transform:scale(.99)}.opt:hover,.opt:focus-visible{background:var(--btn-b);outline:2px solid var(--accent);outline-offset:0}.opt[disabled]{opacity:.55;cursor:not-allowed;transform:none}.opt.correct{background:#14532d;color:#ecfdf5}.opt.wrong{background:#7f1d1d;color:#fef2f2}.actions{display:flex;flex-direction:column;gap:.5rem;margin-top:.75rem}.btn-secondary{background:transparent;border:1px solid #475569;color:var(--muted);font-size:.8rem;padding:.5rem .75rem;border-radius:.5rem;font-family:inherit;cursor:pointer}.btn-secondary:hover{color:var(--text);border-color:var(--muted)}.feedback{min-height:1.2rem;font-size:.9rem;font-weight:500;margin:.25rem 0 .75rem}.feedback.ok{color:var(--ok)}.feedback.bad{color:var(--bad)}@keyframes feedback-pop{0%{transform:scale(.65);opacity:.6}60%{transform:scale(1.08);opacity:1}to{transform:scale(1);opacity:1}}.feedback.pop{animation:feedback-pop .28s ease-out both}@keyframes emoji-burst{0%{transform:translate(-50%,-50%) scale(0);opacity:1}55%{transform:translate(-50%,-110%) scale(1.5);opacity:1}to{transform:translate(-50%,-180%) scale(1.1);opacity:0}}.emoji-burst{position:fixed;pointer-events:none;font-size:2.5rem;line-height:1;z-index:9999;animation:emoji-burst .85s ease-out forwards}.banner{background:#38bdf814;border:1px solid rgba(56,189,248,.35);color:var(--text);font-size:.8rem;padding:.45rem .65rem;border-radius:.55rem;margin:0 0 .85rem}.banner strong{color:var(--accent)}.opt-key{display:inline-block;min-width:1.4rem;padding:0 .3rem;margin-right:.4rem;text-align:center;border-radius:.35rem;background:#ffffff14;color:var(--muted);font-size:.78rem;font-weight:600}.opt.correct .opt-key,.opt.wrong .opt-key{background:#ffffff1f;color:inherit}.btn-primary{background:var(--accent);color:#0b1220;border:none;font-size:.92rem;font-weight:600;padding:.65rem .85rem;border-radius:.6rem;font-family:inherit;cursor:pointer}.btn-primary:hover,.btn-primary:focus-visible{background:#7dd3fc;outline:2px solid var(--accent);outline-offset:2px}.hint{margin:.85rem 0 0;font-size:.72rem;color:var(--muted);text-align:center}.hint kbd{background:#ffffff14;padding:0 .3rem;border-radius:.25rem;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.72rem}.concepts{margin:.5rem 0 .9rem;padding-left:1.1rem;color:var(--muted);font-size:.85rem}.footer{text-align:center;font-size:.7rem;color:#64748b;margin-top:1.5rem}.bp-board{gap:.75rem}.bp-goal{margin-bottom:.9rem}.bp-bag{display:flex;flex-wrap:wrap;gap:.55rem}.bp-chip{border:1px solid #475569;border-radius:999px;background:transparent;color:var(--text);padding:.45rem .75rem;font-size:.82rem;font-family:inherit;line-height:1.25;cursor:pointer}.bp-chip:hover,.bp-chip:focus-visible{border-color:var(--accent);outline:2px solid rgba(56,189,248,.35);outline-offset:1px}.bp-chip.is-inbag{background:#38bdf838;border-color:var(--accent)}.bp-submit{width:100%}.sl-intro{font-size:.8rem;font-style:italic;color:var(--muted);margin:0 0 .75rem}.sl-paragraph{font-size:.92rem;line-height:1.7;margin:0 0 .85rem}.sl-claim{display:inline;background:#ffffff0f;border:1px solid rgba(255,255,255,.15);border-radius:.3rem;color:var(--text);font-family:inherit;font-size:inherit;line-height:inherit;padding:.05em .3em;cursor:pointer;transition:background .1s,border-color .1s;vertical-align:baseline;white-space:normal;text-align:left}.sl-claim:hover,.sl-claim:focus-visible{background:#38bdf81f;border-color:var(--accent);outline:none}.sl-claim.flagged{background:#fbbf2433;border-color:#fbbf24;color:#fde68a}.sl-claim.sl-correct{background:#14532d;border-color:#4ade80;color:#ecfdf5}.sl-claim.sl-missed,.sl-claim.sl-false-flag{background:#7f1d1d;border-color:var(--bad);color:#fef2f2}.sl-claim[disabled]{cursor:default;opacity:.9}.sl-hint{font-size:.75rem;color:var(--muted);margin:0 0 .75rem}.sl-submit{margin-bottom:.75rem}.sl-result{font-size:.88rem;font-weight:500;color:var(--accent);margin:.75rem 0}.rd-context{margin:0 0 .7rem;font-size:.85rem;color:var(--muted)}.rd-draft{display:flex;flex-wrap:wrap;gap:.45rem;margin-bottom:.9rem}.rd-token{border:1px solid #475569;background:#0b1220;color:var(--text);border-radius:.55rem;padding:.38rem .55rem;font-size:.86rem;font-family:inherit;cursor:pointer}.rd-token:hover,.rd-token:focus-visible{border-color:var(--accent);outline:2px solid rgba(56,189,248,.35);outline-offset:0}.rd-token.redacted{background:#111827;letter-spacing:.01em}.rd-token.rd-correct{border-color:#14532d;background:#14532d;color:#ecfdf5}.rd-token.rd-missed,.rd-token.rd-over{border-color:#7f1d1d;background:#7f1d1d;color:#fef2f2}.rd-token:disabled{cursor:default}.rd-submit{width:100%}.home-grid{display:grid;grid-template-columns:1fr 1fr;gap:.6rem;margin:.5rem 0 .75rem}.home-card{display:flex;flex-direction:column;align-items:flex-start;gap:.3rem;padding:.7rem .75rem .85rem;border-radius:.7rem;border:1px solid var(--btn-b);background:var(--btn);color:var(--text);text-align:left;font-family:inherit;cursor:pointer;position:relative;min-height:6.2rem}.home-card:hover,.home-card:focus-visible{border-color:var(--accent);outline:2px solid rgba(56,189,248,.35);outline-offset:1px}.home-card .opt-key{font-size:.72rem}.home-card__title{font-size:.95rem;font-weight:600}.home-card__sub{font-size:.78rem;color:var(--muted);line-height:1.35}.home-card--recommended{border-color:var(--accent)}.home-card__badge{position:absolute;top:.4rem;right:.45rem;font-size:.65rem;background:#38bdf838;color:#bae6fd;padding:.1rem .45rem;border-radius:999px;border:1px solid var(--accent)}.game-wrap{display:flex;flex-direction:column;gap:.7rem}.game-back{align-self:flex-start;padding:.45rem .7rem;font-size:.8rem}.game-session-progress{margin:0;font-size:.85rem;color:var(--muted)}.game-slot{display:contents}.app-footer{margin-top:1.5rem;padding-top:.75rem;border-top:1px solid rgba(255,255,255,.06);display:flex;justify-content:center;gap:1rem;font-size:.75rem}.app-footer-link{color:var(--muted);text-decoration:none;border-bottom:1px dotted transparent}.app-footer-link:hover,.app-footer-link:focus-visible{color:var(--text);border-bottom-color:var(--muted);outline:none}.privacy-card{padding:1rem 1rem 1.25rem}.privacy-back{background:transparent;border:1px solid #475569;color:var(--muted);font:inherit;font-size:.78rem;padding:.4rem .65rem;border-radius:.5rem;cursor:pointer;margin-bottom:.85rem}.privacy-back:hover,.privacy-back:focus-visible{color:var(--text);border-color:var(--accent);outline:2px solid rgba(56,189,248,.3);outline-offset:1px}.privacy-title{margin:0 0 .4rem;font-size:1.15rem;font-weight:600}.privacy-intro{margin:0 0 1rem;color:var(--muted);font-size:.9rem;line-height:1.5}.privacy-section{margin:0 0 .95rem}.privacy-section-title{margin:0 0 .3rem;font-size:.95rem;font-weight:600;color:var(--accent)}.privacy-section-body{margin:0;font-size:.88rem;line-height:1.5}.about-card{padding:1rem 1rem 1.25rem}.about-back{background:transparent;border:1px solid #475569;color:var(--muted);font:inherit;font-size:.78rem;padding:.4rem .65rem;border-radius:.5rem;cursor:pointer;margin-bottom:.85rem}.about-back:hover,.about-back:focus-visible{color:var(--text);border-color:var(--accent);outline:2px solid rgba(56,189,248,.3);outline-offset:1px}.about-title{margin:0 0 .75rem;font-size:1.4rem;font-weight:700;letter-spacing:-.01em}.about-section{margin:0 0 1.4rem}.about-section-title{margin:0 0 .5rem;font-size:1.05rem;font-weight:600;color:var(--accent)}.about-lede{margin:0 0 .9rem;padding-left:.7rem;border-left:2px solid var(--accent);color:var(--text);font-size:.95rem;line-height:1.55}.about-para{margin:0 0 .7rem;font-size:.9rem;line-height:1.55;color:var(--text)}.about-subhead{margin:.85rem 0 .4rem;font-size:.9rem;font-weight:600;color:var(--text)}.about-bullets,.about-steps{margin:0 0 .7rem;padding-left:1.2rem;font-size:.88rem;line-height:1.5;color:var(--muted)}.about-bullets li,.about-steps li{margin:0 0 .25rem}.about-example{margin:0 0 .7rem;padding:.5rem .65rem;background:#38bdf812;border-radius:.5rem;font-size:.85rem;line-height:1.5;color:var(--text)}.about-example-label{display:inline-block;font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);margin-right:.15rem}.about-table-wrap{margin:0 0 .6rem;overflow-x:auto}.about-table{width:100%;border-collapse:collapse;font-size:.8rem}.about-table th,.about-table td{padding:.45rem .5rem;border-bottom:1px solid rgba(255,255,255,.08);text-align:left;vertical-align:top}.about-table thead th{color:var(--muted);font-weight:600;white-space:nowrap}.about-table tbody th{font-weight:500;color:var(--text)}.about-table-num{text-align:right;white-space:nowrap}.about-table-legend{margin:.4rem 0 0;font-size:.75rem;color:var(--muted)}.about-cta{margin:.5rem 0 0}.about-cta a{color:var(--accent);font-weight:600;text-decoration:none}.about-cta a:hover,.about-cta a:focus-visible{text-decoration:underline}.settings{max-width:640px;margin:24px auto;padding:0 16px}.settings-header{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:8px}.settings-header h1{margin:0;font-size:1.4rem}.settings-card{margin-top:16px;padding:16px;background:var(--card);border:1px solid rgba(255,255,255,.08);border-radius:10px}.settings-card h2{margin:0 0 12px;font-size:.95rem;font-weight:600;color:var(--accent)}.settings-kv{display:grid;grid-template-columns:max-content 1fr;gap:6px 16px;margin:0;font-size:.9rem}.settings-kv dt{color:var(--muted)}.danger-zone{border-color:#dc262666}.danger-zone h2{color:#f87171}.settings-delete{margin-top:12px;background:#dc2626;color:#fff;border:none;border-radius:6px;padding:8px 16px;cursor:pointer;font-size:.88rem;font-weight:600;transition:background .15s}.settings-delete:hover{background:#b91c1c}.auth-settings{background:transparent;border:1px solid rgba(255,255,255,.25);color:var(--text);border-radius:6px;padding:3px 10px;font-size:.8rem;cursor:pointer;margin-right:6px;transition:border-color .15s}.auth-settings:hover{border-color:var(--accent);color:var(--accent)}.delete-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000a6;display:grid;place-items:center;z-index:1000}.delete-modal{background:var(--card);color:var(--text);max-width:480px;width:calc(100% - 32px);padding:24px;border-radius:10px;border:1px solid rgba(220,38,38,.35);box-shadow:0 12px 32px #00000080}.delete-modal h2{margin:0 0 12px;color:#f87171;font-size:1.1rem}.delete-modal p{font-size:.875rem;line-height:1.55;margin:0 0 10px;color:var(--muted)}.delete-modal-label{display:block;font-size:.83rem;margin-top:14px;color:var(--muted)}.delete-modal-input{display:block;width:100%;margin-top:6px;padding:8px 10px;background:var(--bg);color:var(--text);border:1px solid rgba(255,255,255,.15);border-radius:6px;font-size:.9rem}.delete-modal-error{color:#f87171;font-size:.83rem;min-height:18px;margin:8px 0 0}.delete-modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}.delete-modal-cancel{background:transparent;color:var(--text);border:1px solid rgba(255,255,255,.2);border-radius:6px;padding:8px 16px;cursor:pointer;font-size:.88rem}.delete-modal-cancel:hover{border-color:var(--accent)}.delete-modal-submit{background:#dc2626;color:#fff;border:none;border-radius:6px;padding:8px 16px;cursor:pointer;font-size:.88rem;font-weight:600;transition:background .15s}.delete-modal-submit:hover:not(:disabled){background:#b91c1c}.delete-modal-submit:disabled{background:#dc262659;cursor:not-allowed}