:root{--bg: #f6f1e7;--surface: #ffffff;--ink: #1d2420;--muted: #6b7268;--primary: #1f4d3a;--primary-ink: #ffffff;--accent: #e07a2f;--good: #2f9e5b;--bad: #c8423b;--line: #e3dccd;--radius: 16px}@media(prefers-color-scheme:dark){:root{--bg: #141a17;--surface: #1e2622;--ink: #ecebe4;--muted: #9aa39a;--line: #2e3833;--primary: #3f8f6b}}*,*:before,*:after{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:17px}.app{max-width:560px;margin:0 auto;padding:16px 16px 88px}.tabbar{position:fixed;bottom:0;left:0;width:100%;display:flex;background:var(--surface);border-top:1px solid var(--line)}.tabbar a{flex:1;text-align:center;padding:12px;text-decoration:none;color:var(--ink)}.tabbar a.active{color:var(--primary);font-weight:700}.card{background:var(--surface);border-radius:var(--radius);padding:16px;border:1px solid var(--line)}.btn{display:block;width:100%;padding:14px;border-radius:12px;border:none;background:var(--primary);color:var(--primary-ink);font-size:17px;font-weight:600}.btn{text-align:center;text-decoration:none;cursor:pointer}a.card{display:block;color:inherit;text-decoration:none}.btn.secondary{background:var(--surface);color:var(--ink);border:1px solid var(--line)}.btn:disabled{opacity:.5}.row{display:flex;gap:8px}.stack{display:flex;flex-direction:column;gap:12px}.muted{color:var(--muted)}.audio-row{display:inline-flex;align-items:center;gap:8px}.audio-btn{border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;padding:0}.audio-btn:active{transform:scale(.96)}.audio-row.sm .audio-btn{width:36px;height:36px;font-size:15px}.audio-row.md .audio-btn{width:52px;height:52px;font-size:22px}.audio-row.lg .audio-btn{width:80px;height:80px;font-size:34px}.audio-row.sm .audio-btn.slow{width:28px;height:28px;font-size:12px}.audio-row.md .audio-btn.slow{width:36px;height:36px;font-size:16px}.audio-row.lg .audio-btn.slow{width:44px;height:44px;font-size:20px}.progressbar{flex:1;height:8px;border-radius:999px;background:color-mix(in srgb,var(--line) 70%,var(--surface));overflow:hidden}.progressbar-fill{height:100%;border-radius:999px;background:var(--primary);transition:width .35s ease}.feedback{position:fixed;bottom:0;left:0;right:0;margin:0 auto;max-width:560px;z-index:20;padding:16px 16px calc(20px + env(safe-area-inset-bottom,0px));border-radius:var(--radius) var(--radius) 0 0;box-shadow:0 -4px 16px #0000001f}.feedback.good{background:color-mix(in srgb,var(--good) 14%,var(--surface));border-top:3px solid var(--good)}.feedback.bad{background:color-mix(in srgb,var(--bad) 14%,var(--surface));border-top:3px solid var(--bad)}.feedback-title{font-weight:700;font-size:17px}.feedback.good .feedback-title{color:var(--good)}.feedback.bad .feedback-title{color:var(--bad)}.feedback-es{font-size:1.5rem;font-weight:700;line-height:1.25}.feedback-es-row{display:flex;align-items:center;gap:12px}.feedback-note{font-size:13px}.feedback .btn{font-size:18px;padding:16px}.ex-heading{margin:0;font-size:20px}.ex-prompt-es{font-size:1.5rem;font-weight:700;line-height:1.25}.ex-audio-center{display:flex;flex-direction:column;align-items:center;gap:12px;padding:8px 0}.chip{align-self:flex-start;display:inline-block;padding:4px 12px;border-radius:999px;font-size:13px;border:1px solid var(--accent);background:color-mix(in srgb,var(--accent) 14%,var(--surface))}.ex-option{text-align:left;padding:14px 16px}.btn.secondary.opt-correct{background:color-mix(in srgb,var(--good) 18%,var(--surface));border-color:var(--good)}.btn.secondary.opt-wrong{background:color-mix(in srgb,var(--bad) 18%,var(--surface));border-color:var(--bad)}.type-input{width:100%;box-sizing:border-box;padding:14px 16px;font-size:18px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink)}.accent-row{display:flex;flex-wrap:wrap;gap:8px}.accent-key{min-width:48px;min-height:48px;padding:0 10px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:18px;cursor:pointer}.spelling-warn{color:var(--bad);font-size:14px;font-weight:600}.tile-bank{display:flex;flex-wrap:wrap;gap:8px;min-height:60px;padding:8px;border-radius:12px;border:1px dashed var(--line)}.tile-answer{display:flex;flex-wrap:wrap;gap:8px;min-height:60px;padding:8px;border-radius:12px;border:1px solid var(--line);background:color-mix(in srgb,var(--line) 30%,var(--surface))}.tile{padding:10px 14px;min-height:48px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:16px;cursor:pointer}.grade-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.grade-grid button{min-height:56px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:17px;font-weight:600;cursor:pointer}.grade-grid .grade-again{border-color:var(--bad);color:var(--bad)}.record-row{display:flex;flex-wrap:wrap;gap:8px}.record-row .btn{width:auto;flex:1 1 auto;padding:12px 14px}.dialogue-controls{align-items:center}.turtle-toggle{width:52px;height:52px;flex:0 0 auto;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:20px;cursor:pointer}.turtle-toggle.on{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 18%,var(--surface))}.linklike{align-self:flex-start;background:none;border:none;padding:0;color:var(--primary);font-size:15px;cursor:pointer}.bubbles{display:flex;flex-direction:column;gap:10px}.bubble{max-width:82%;padding:10px 14px;border-radius:14px;background:var(--surface);border:1px solid var(--line);cursor:pointer}.bubble.b{align-self:flex-end;background:color-mix(in srgb,var(--primary) 14%,var(--surface));border-color:color-mix(in srgb,var(--primary) 40%,var(--line))}.bubble.current{outline:2px solid var(--primary)}.bubble-top{display:flex;align-items:center;gap:8px}.bubble-play{flex:0 0 auto;width:30px;height:30px;border-radius:50%;border:none;background:transparent;color:var(--ink);font-size:15px;cursor:pointer;padding:0}.bubble-es{font-size:16px}.bubble-en{margin-top:6px;font-size:14px}.stepheader{display:flex;flex-direction:column;gap:6px;padding:8px 0 4px}.stepheader-row{align-items:center}.stepheader-close{flex:0 0 auto;width:48px;height:48px;border-radius:12px;border:none;background:transparent;color:var(--muted);font-size:20px;cursor:pointer}.stepheader-title{text-transform:uppercase;letter-spacing:.07em;font-size:12px;font-weight:600}a{color:inherit}.top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:16px}.top h1{font-size:1.4rem;margin:0}.back{display:inline-block;margin-bottom:12px;text-decoration:none;color:var(--primary);font-weight:600}h2{font-size:1.2rem;margin:0 0 4px}.center{text-align:center}.big{font-size:2.2rem;font-weight:700}.chip{display:inline-block;padding:2px 10px;border-radius:999px;border:1px solid var(--line);font-size:.8rem;color:var(--muted);background:var(--surface)}.daycard{display:block;text-decoration:none}.daycard .top{margin-bottom:4px}.steprow{display:flex;align-items:center;gap:10px;padding:12px 14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);text-decoration:none}.steprow .label{flex:1}.steprow.recommended{border:2px solid var(--primary);font-weight:600}.fixtable,.fixtable tbody{display:block;font-size:.95rem}.fixtable tr{display:grid;grid-template-columns:auto 1fr;column-gap:10px;padding:8px 0;border-bottom:1px solid var(--line)}.fixtable tr:last-child{border-bottom:none}.fixtable td{display:block;padding:0}.fixtable .wrong{color:var(--bad);text-decoration:line-through}.fixtable .right{font-weight:700}.fixtable td.muted{grid-column:1 / -1;font-size:.85rem;margin-top:2px}.tip{border-bottom:1px solid var(--line);padding-bottom:10px}.tip:last-child{border-bottom:none;padding-bottom:0}.tipchips{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}.tipchip{display:inline-flex;align-items:center;gap:4px;padding:4px 8px;border-radius:10px;background:var(--bg);border:1px solid var(--line);font-size:.85rem}.introitem{text-align:center;padding:24px 8px}.introitem .es{font-size:1.6rem;font-weight:700;margin:12px 0 4px}.pb-top{position:sticky;top:0;z-index:10;background:var(--bg);padding:8px 0 12px;display:flex;flex-direction:column;gap:8px}.pb-top input[type=search]{width:100%;padding:12px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:16px;box-sizing:border-box}.pb-chips{display:flex;gap:6px;flex-wrap:wrap}.pb-chip{padding:4px 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-size:.85rem;cursor:pointer}.pb-chip.on{background:var(--primary);color:var(--primary-ink);border-color:var(--primary)}.pb-group h3{margin:16px 0 6px;font-size:.9rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.pb-row{display:flex;align-items:center;gap:10px;padding:10px 4px;border-bottom:1px solid var(--line)}.pb-row .text{flex:1;cursor:pointer}.pb-row .es{font-weight:700}.dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.overlay{position:fixed;inset:0;background:var(--bg);z-index:50;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:24px;text-align:center}.overlay .es{font-size:2.4rem;font-weight:700}.overlay .close{position:absolute;top:16px;right:20px;font-size:1.6rem;background:none;border:none;color:var(--ink);cursor:pointer;padding:8px}.tiles{display:grid;grid-template-columns:1fr 1fr;gap:10px}.tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px;text-align:center}.tile .num{font-size:1.5rem;font-weight:700}.tile .lbl{font-size:.8rem;color:var(--muted)}.bar{display:flex;height:14px;border-radius:7px;overflow:hidden;background:var(--line)}.bar-seg{height:100%}.legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px;font-size:.85rem;color:var(--muted)}.legend span{display:inline-flex;align-items:center;gap:6px}.xpchart{display:flex;align-items:flex-end;gap:8px;height:90px;margin-top:8px}.xpchart .col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;gap:4px;height:100%}.xpchart .colbar{width:100%;background:var(--primary);border-radius:4px 4px 0 0;min-height:2px}.xpchart .day{font-size:.75rem;color:var(--muted)}.examrow{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--line)}.examrow:last-child{border-bottom:none}