:root{--bg: #f6f4ef;--surface: #ffffff;--text: #1f2a2e;--muted: #5b676b;--line: #dcd8cf;--accent: #c2410c;--accent-text: #ffffff;--accent-soft: #fdeadb;--ok: #2e6b3f;--ok-soft: #e5f1e7;--close: #8a5a00;--close-soft: #fbf0d9;--bad: #9b2c2c;--bad-soft: #f8e4e4;--masc: #2b5a8a;--fem: #8a2b6a;--radius: 12px;--font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;color-scheme:light}:root[data-theme=dark]{--bg: #161a1b;--surface: #1f2526;--text: #e7ecec;--muted: #a3afb1;--line: #333b3d;--accent: #fb923c;--accent-text: #1a0f08;--accent-soft: #3a2618;--ok: #8fd19e;--ok-soft: #1e3324;--close: #f0c36a;--close-soft: #3a3020;--bad: #f19c9c;--bad-soft: #3d2324;--masc: #8fb8e6;--fem: #e69bcd;color-scheme:dark}@media(prefers-color-scheme:dark){:root[data-theme=system]{--bg: #161a1b;--surface: #1f2526;--text: #e7ecec;--muted: #a3afb1;--line: #333b3d;--accent: #fb923c;--accent-text: #1a0f08;--accent-soft: #3a2618;--ok: #8fd19e;--ok-soft: #1e3324;--close: #f0c36a;--close-soft: #3a3020;--bad: #f19c9c;--bad-soft: #3d2324;--masc: #8fb8e6;--fem: #e69bcd;color-scheme:dark}}*{box-sizing:border-box}html{font-size:18px}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);line-height:1.55;-webkit-font-smoothing:antialiased}@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}.reduce-motion *{transition:none!important;animation:none!important}h1{font-size:1.6rem;margin:.4rem 0 .6rem}h2{font-size:1.3rem;margin:.3rem 0 .6rem}h3{font-size:1.05rem}.small-heading{font-size:.85rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin:1.2rem 0 .4rem}p{margin:.5rem 0}.muted{color:var(--muted)}.small{font-size:.85rem}kbd{font-family:inherit;font-size:.7rem;border:1px solid currentColor;border-radius:4px;padding:0 .3rem;margin-left:.35rem;opacity:.7}:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.app{max-width:680px;margin:0 auto;padding:0 1rem 4rem}.topbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.9rem 0;flex-wrap:wrap}.brand{font-weight:700;color:var(--accent)}.topbar nav{display:flex;gap:.2rem;flex-wrap:wrap}.nav-link{background:none;border:0;color:var(--muted);font:inherit;font-size:.9rem;padding:.35rem .6rem;border-radius:8px;cursor:pointer}.nav-link.active{color:var(--text);background:var(--accent-soft)}.main{padding-top:.5rem}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem 1.3rem;margin:0 0 1rem}.hero h2{font-size:1.4rem}.eyebrow{font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin:0 0 .4rem}.row{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem;margin-top:.9rem}.row.small-gap{gap:1rem;margin-top:.3rem}.btn{font:inherit;font-size:.95rem;border-radius:10px;padding:.6rem 1.1rem;cursor:pointer;border:1px solid transparent;transition:background-color .12s}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-primary{background:var(--accent);color:var(--accent-text)}.btn-secondary{background:var(--surface);color:var(--text);border-color:var(--line)}.btn-quiet{background:transparent;color:var(--muted);padding:.5rem .7rem}.btn-quiet:hover{color:var(--text)}.btn-big{font-size:1.1rem;padding:.8rem 1.8rem}.btn.recording{background:var(--bad);color:#fff}.danger{color:var(--bad)}.link{background:none;border:0;color:var(--accent);cursor:pointer;font:inherit;padding:0 .2rem;text-decoration:underline}.icon-btn{background:var(--accent-soft);color:var(--accent);border:0;border-radius:999px;width:1.9rem;height:1.9rem;font-size:.7rem;cursor:pointer;vertical-align:middle;margin-left:.25rem}.audio{display:inline-flex;gap:.3rem;flex-wrap:wrap}.tag{display:inline-block;white-space:nowrap;font-size:.72rem;padding:.1rem .5rem;border-radius:999px;background:var(--accent-soft);color:var(--muted);vertical-align:middle}.tag-level{background:var(--accent);color:var(--accent-text);font-weight:600}.tag-masc{color:var(--masc);border:1px solid currentColor;background:transparent}.tag-fem{color:var(--fem);border:1px solid currentColor;background:transparent}.tag-ok{color:var(--ok);background:var(--ok-soft)}.session-bar{display:flex;align-items:center;gap:.5rem;padding:.8rem 0 1rem}.progress-wrap{flex:1}.progress-text{display:flex;justify-content:space-between;font-size:.8rem;color:var(--muted);margin-bottom:.3rem}.time{font-variant-numeric:tabular-nums}.time.over{color:var(--close);font-weight:600}.progress{height:8px;border-radius:999px;background:var(--line);overflow:hidden}.progress-fill{height:100%;background:var(--accent);transition:width .2s}.task{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem 1.4rem 1.6rem}.big{font-size:1.5rem;line-height:1.35;margin:.4rem 0 .6rem}.meaning{font-size:1.15rem}.prompt{margin-bottom:.8rem}.prompt-text{font-size:1.35rem}.gap{display:inline-block;min-width:3.5rem;border-bottom:2px solid var(--accent);color:transparent;margin:0 .2rem}.cue{font-size:1.3rem;margin:.6rem 0}.task-instruction{font-weight:600;font-size:1.1rem;margin-top:1rem;padding:.6rem .8rem;border-left:4px solid var(--accent);background:var(--accent-soft);border-radius:0 8px 8px 0}.summary-text,.summary{font-size:1.05rem}.example{background:var(--bg);border-radius:10px;padding:.7rem .9rem;margin:1rem 0}.example-after{margin-top:1rem}.listen-prompt{padding:1rem 0}.hint{color:var(--close);font-family:ui-monospace,monospace;letter-spacing:.08em}.answer-box input,.answer-box textarea{width:100%;font:inherit;font-size:1.2rem;padding:.75rem .9rem;border-radius:10px;border:2px solid var(--line);background:var(--bg);color:var(--text);resize:vertical}.answer-box input:focus,.answer-box textarea:focus{border-color:var(--accent);outline:none}.accent-bar{display:flex;flex-wrap:wrap;gap:.25rem;margin-top:.4rem}.accent{font:inherit;font-size:.9rem;min-width:2rem;padding:.2rem .4rem;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:6px;cursor:pointer}.feedback{border-radius:10px;padding:.9rem 1rem;margin-top:.4rem;border:1px solid}.feedback-correct{background:var(--ok-soft);border-color:var(--ok)}.feedback-close{background:var(--close-soft);border-color:var(--close)}.feedback-incorrect{background:var(--bad-soft);border-color:var(--bad)}.verdict{margin-top:0;font-size:1.05rem}.verdict-icon{font-weight:700}.feedback-correct .verdict-icon{color:var(--ok)}.feedback-close .verdict-icon{color:var(--close)}.feedback-incorrect .verdict-icon{color:var(--bad)}.answer-line,.diff-line{font-size:1.15rem;margin:.4rem 0}.model{display:block}.tok-missing{font-weight:700;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}.tok-extra{text-decoration:line-through;opacity:.8}.notes{margin:.4rem 0 0;padding-left:1.2rem}.dialogue{list-style:none;padding:0;margin:1rem 0;display:flex;flex-direction:column;gap:.6rem}.dialogue .line{display:flex;flex-direction:column;max-width:88%}.dialogue .line.me{align-self:flex-end;text-align:right}.speaker{font-size:.75rem;color:var(--muted)}.line-body{background:var(--bg);border-radius:12px;padding:.55rem .8rem;font-size:1.1rem}.line.me .line-body{background:var(--accent-soft)}.en{display:block;font-size:.88rem;color:var(--muted);margin-top:.2rem}.dialogue.compact{gap:.4rem;font-size:.95rem;list-style:none}.toggle{display:inline-flex;align-items:center;gap:.4rem;font-size:.9rem;cursor:pointer;margin:.25rem 1rem .25rem 0}.examples,.rules{padding-left:1.2rem}.examples li,.rules li{margin-bottom:.4rem}details{margin:.4rem 0}summary{cursor:pointer;color:var(--accent)}.banner{background:var(--close-soft);border:1px solid var(--close);border-radius:var(--radius);padding:.8rem 1rem;margin-bottom:1rem}.banner.soft{background:var(--accent-soft);border-color:var(--line);display:flex;justify-content:space-between;align-items:center;gap:1rem}.plan-preview{font-size:.9rem;color:var(--muted)}.custom{margin-top:1rem;border-top:1px solid var(--line);padding-top:.6rem}fieldset{border:0;padding:0;margin:.8rem 0}legend{font-size:.85rem;color:var(--muted);margin-bottom:.3rem}.chip{display:inline-flex;align-items:center;gap:.3rem;margin:0 .8rem .4rem 0;cursor:pointer;text-transform:capitalize}.option{display:flex;gap:.6rem;align-items:flex-start;padding:.45rem 0;cursor:pointer}.option input{margin-top:.35rem}.stats-line{display:flex;flex-wrap:wrap;gap:1.4rem;color:var(--muted);font-size:.9rem;padding:.3rem .2rem}.stats-line strong{color:var(--text)}.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:1rem}.metric{display:flex;flex-direction:column}.metric-num{font-size:2rem;font-weight:700;color:var(--accent);line-height:1.1}.metric-of{font-size:1rem;color:var(--muted);font-weight:400}.metric-label{font-size:.9rem}.acc{width:100%;border-collapse:collapse;margin:.6rem 0}.acc th{text-align:left;font-weight:400;padding:.35rem 0}.acc td{padding:.35rem .4rem;font-variant-numeric:tabular-nums}.acc tr+tr{border-top:1px solid var(--line)}.level-row{display:flex;align-items:center;gap:.7rem;margin:.5rem 0}.level-name{width:2rem;font-weight:600}.level-pct{width:3rem;text-align:right;font-variant-numeric:tabular-nums}.bar{flex:1;height:10px;background:var(--line);border-radius:999px;overflow:hidden}.bar-fill{height:100%;background:var(--accent)}.days{display:flex;align-items:flex-end;gap:4px;height:60px;margin:.6rem 0}.day{flex:1;height:100%;display:flex;align-items:flex-end;background:var(--bg);border-radius:4px}.day-bar{width:100%;background:var(--accent);border-radius:4px;min-height:0}.cando{padding-left:1.2rem}.cando li{margin-bottom:.4rem}.scenario-list{list-style:none;padding:0}.scenario-head{display:flex;width:100%;justify-content:space-between;align-items:center;gap:1rem;background:none;border:0;font:inherit;color:inherit;text-align:left;cursor:pointer;padding:0}.scenario-body{margin-top:.8rem}.grammar-ref{background:var(--bg);padding:.5rem .8rem;border-radius:8px}.field{display:flex;flex-direction:column;gap:.3rem;margin:.8rem 0}.field input[type=range]{width:100%;max-width:360px;accent-color:var(--accent)}.field input[type=time]{font:inherit;padding:.3rem;width:fit-content}.onboarding{margin-top:1.5rem}.onboarding ul{padding-left:1.2rem}.onboarding li{margin-bottom:.4rem}@media(max-width:520px){html{font-size:17px}.task{padding:1.1rem 1rem 1.3rem}.big{font-size:1.3rem}.dialogue .line{max-width:100%}}.reading{font-size:1.12rem;line-height:1.7;margin:1rem 0}.reading.compact{font-size:.95rem}.gloss{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;text-decoration:underline dotted var(--accent);text-decoration-thickness:2px;text-underline-offset:4px}.gloss[aria-expanded=true]{background:var(--accent-soft);border-radius:4px}.gloss-en{font-size:.85rem;color:var(--muted)}.your-text{background:var(--surface);border-radius:8px;padding:.5rem .8rem;margin-top:.6rem;white-space:pre-wrap}.voice-row{margin-top:.2rem}.voice-row select{font:inherit;font-size:.95rem;padding:.5rem .6rem;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--text);max-width:100%;flex:1 1 16rem}.target{display:flex;align-items:center;gap:.7rem;font-size:.92rem;padding:.6rem .2rem}.target-dots{display:inline-flex;gap:.3rem;flex-shrink:0}.dot{width:.7rem;height:.7rem;border-radius:999px;border:2px solid var(--accent)}.dot.on{background:var(--accent)}.summary .target{padding-left:0}