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70%,transparent)}.lane-ico:active{transform:translateY(1px)}.path{display:flex;flex-direction:column;align-items:center;gap:22px;padding:22px 0 10px}.pathnode{display:flex;flex-direction:column;align-items:center;position:relative}.node{width:66px;height:58px;border-radius:50%;border:0;cursor:pointer;display:grid;place-items:center;font-size:26px;color:#fff;transition:transform .08s ease,filter .12s ease}.node:active{transform:translateY(3px)}.node .node-ico{display:grid;place-items:center;line-height:0}.node.done{background:var(--u, var(--correct));box-shadow:0 5px 0 var(--u-lip, var(--forest-600));color:#fff}.node.todo{background:var(--chip);box-shadow:0 5px 0 var(--border-strong);color:var(--ink-faint)}.node.todo:hover{filter:brightness(1.08)}.node.current{background:var(--u, var(--forest));box-shadow:0 6px 0 var(--u-lip, var(--forest-600));color:#fff;animation:nodeBob 1.8s ease-in-out infinite}.node.current:before{content:"";position:absolute;top:-9px;right:-9px;bottom:-9px;left:-9px;border-radius:50%;border:4px solid var(--u, var(--forest));opacity:.35}.node-bubble{position:absolute;bottom:calc(100% + 10px);left:50%;transform:translate(-50%);background:var(--card);color:var(--u, var(--forest));border:2px solid var(--border);font-family:var(--mono);font-size:11px;font-weight:800;letter-spacing:.14em;padding:5px 12px;border-radius:10px;white-space:nowrap;z-index:2}.node-bubble:after{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%) rotate(45deg);width:10px;height:10px;background:var(--card);border-right:2px solid var(--border);border-bottom:2px solid var(--border);margin-top:-6px}@keyframes nodeBob{0%,to{transform:translateY(0)}50%{transform:translateY(-5px)}}@media (prefers-reduced-motion: reduce){.node.current{animation:none}}.unit{margin-top:18px}.unit-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:10px;color:var(--ink)}.unit-head h3{margin:0;font-size:17px;font-weight:700;letter-spacing:-.01em;color:var(--ink)}.setgrid{display:grid;gap:10px}.setrow{display:flex;align-items:center;gap:14px;width:100%;text-align:left;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;cursor:pointer;transition:border-color .12s,transform .08s;color:var(--ink)}.setrow:hover{border-color:var(--border-strong)}.setrow:active{transform:scale(.995)}.setrow .num{width:36px;height:36px;flex:none;border-radius:11px;display:grid;place-items:center;font-weight:800;background:var(--chip);color:var(--ink-soft)}.setrow.done .num{background:var(--correct);color:#fff}.setrow.started .num{background:var(--sky);color:#fff}.setrow .name{font-weight:600}.setrow .sub{font-size:13px;color:var(--ink-faint);margin-top:1px}.badge{font-family:var(--mono);font-size:11px;font-weight:700;padding:3px 8px;border-radius:999px;flex:none}.badge.good{background:var(--correct-bg);color:var(--correct-ink)}.badge.shaky{background:var(--warn-bg);color:var(--warn-ink)}.badge.poor{background:var(--wrong-bg);color:var(--wrong-ink)}.drill-top{display:flex;align-items:center;gap:12px;padding:12px 14px;border-bottom:1px solid var(--border)}.segs{display:flex;align-items:center;gap:5px;flex:1;min-width:0}.seg{flex:1;height:6px;border-radius:999px;background:var(--chip);transition:all .2s ease}.seg.right{background:var(--correct)}.seg.wrong{background:var(--wrong)}.seg.skipped{background:var(--border-strong)}.seg.current{background:var(--sky);height:9px}.xp-pill{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--sky);flex:none}.prompt{font-weight:600;color:var(--ink-soft);font-size:15px}.sentence{font-size:20px;line-height:1.6;margin-top:14px}@media (min-width: 560px){.sentence{font-size:24px}}.blank-input{display:inline-block;margin:0 4px;padding:0 4px;border:0;border-bottom:2px solid var(--border-strong);background:transparent;color:var(--ink);font-weight:700;font-size:inherit;text-align:center;outline:none;min-width:7ch}.blank-input:focus{border-color:var(--sky)}.blank-filled{border-bottom:2px solid var(--ink-faint);padding:0 6px;font-weight:700}.blank-filled.ok{border-color:var(--correct);color:var(--correct-ink);background:var(--correct-bg);border-radius:6px 6px 0 0}.blank-filled.bad{border-color:var(--wrong);color:var(--wrong-ink);background:var(--wrong-bg);border-radius:6px 6px 0 0}.opts{display:grid;gap:10px;margin-top:22px}.opts.cols{grid-template-columns:1fr 1fr}@media (min-width: 560px){.opts.cols{grid-template-columns:repeat(4,1fr)}}.opt{-webkit-appearance:none;-moz-appearance:none;appearance:none;cursor:pointer;text-align:center;display:flex;align-items:center;justify-content:center;gap:10px;padding:13px 14px;border-radius:13px;font-size:15px;font-weight:600;background:var(--card);color:var(--ink);border:1.5px solid var(--border);transition:border-color .1s,background .1s,transform .06s}.opt:hover{border-color:var(--border-strong)}.opt:active{transform:scale(.98)}.opt.picked{border-color:var(--sky);background:color-mix(in srgb,var(--sky) 12%,var(--card));color:var(--sky-600);font-weight:700}.opts:not(.cols) .opt{justify-content:flex-start;text-align:left}.opt .n{width:22px;height:22px;flex:none;border-radius:999px;display:grid;place-items:center;font-family:var(--mono);font-size:12px;background:var(--chip);color:var(--ink-faint)}.opt.picked .n{background:var(--sky);color:#fff}.opt:disabled{cursor:default}.verdict{border-top:1px solid var(--border);padding:16px;animation:slideUp .22s ease}.verdict.ok{background:var(--correct-bg);border-top-color:var(--correct-border)}.verdict.bad{background:var(--wrong-bg);border-top-color:var(--wrong-border)}@media (prefers-reduced-motion: reduce){.verdict,.pop,.fade{animation:none!important}}.verdict-head{display:flex;align-items:center;gap:12px}.disc{width:28px;height:28px;flex:none;border-radius:999px;display:grid;place-items:center;color:#fff;animation:pop .3s ease}.disc.ok{background:var(--correct)}.disc.bad{background:var(--wrong)}.verdict-title{font-weight:700;font-size:15px;display:flex;flex-wrap:wrap;align-items:center;gap:8px}.verdict.ok .verdict-title{color:var(--correct-ink)}.verdict.bad .verdict-title{color:var(--wrong-ink)}.answer-chip{background:var(--card);border-radius:8px;padding:2px 9px;font-weight:700;border:1px solid var(--border)}.verdict .explain{margin:10px 0 0;padding-left:40px;font-size:14px;line-height:1.55}.verdict.ok .explain{color:var(--correct-ink)}.verdict.bad .explain{color:var(--wrong-ink)}.pattern-box{margin:12px 0 0 40px;border:1px solid var(--border);border-radius:12px;padding:12px}.verdict.ok .pattern-box{border-color:var(--correct-border)}.verdict.bad .pattern-box{border-color:var(--wrong-border)}.pattern-box .lbl{font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-soft)}.verdict.ok .pattern-box .lbl{color:var(--correct-ink)}.verdict.bad .pattern-box .lbl{color:var(--wrong-ink)}.pattern-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.pattern-chips span{background:var(--warn-bg);color:var(--warn-ink);border-radius:8px;padding:4px 10px;font-size:13px}.drill-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--border);padding:12px 16px}.hint{display:flex;gap:10px;margin-top:12px;padding:11px 14px;background:var(--chip);border:1px solid var(--border);border-radius:12px;font-size:13px;color:var(--ink-faint)}.pairgrid{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.pair{-webkit-appearance:none;-moz-appearance:none;appearance:none;cursor:pointer;border:0;font-size:14px;padding:6px 11px;border-radius:9px;font-weight:500;transition:filter .1s}.pair:hover{filter:brightness(.96)}.pair.ok{background:var(--correct-bg);color:var(--correct-ink)}.pair.miss{background:var(--wrong-bg);color:var(--wrong-ink)}.pair.saved{font-weight:700;box-shadow:inset 0 0 0 2px var(--forest)}.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:20;display:flex;justify-content:space-around;background:color-mix(in srgb,var(--card) 88%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--border);padding:8px 8px calc(8px + env(safe-area-inset-bottom))}.tab{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;background:none;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:3px;color:var(--ink-faint);font-size:11px;font-weight:600;padding:6px 14px;border-radius:12px}.tab.active{color:var(--forest)}.tab svg{width:22px;height:22px}.syncpill{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--ink-faint);font-weight:600}.syncpill .dot{width:7px;height:7px;border-radius:999px;background:var(--ink-faint)}.syncpill.synced .dot{background:var(--correct)}.syncpill.error .dot{background:var(--wrong)}.syncpill.offline .dot{background:var(--warn-ink)}.update-banner{position:fixed;left:50%;transform:translate(-50%);bottom:calc(80px + env(safe-area-inset-bottom));z-index:30;background:var(--ink);color:var(--bg);border-radius:999px;padding:8px 10px 8px 16px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow);font-size:14px;font-weight:600}.update-banner button{background:var(--forest);color:#fff;border:0;border-radius:999px;padding:6px 14px;font-weight:700;cursor:pointer}.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}.auth-card{width:100%;max-width:380px}.field{width:100%;padding:12px 14px;border-radius:12px;border:1.5px solid var(--border);background:var(--card);color:var(--ink);font-size:15px;outline:none}.field:focus{border-color:var(--sky)}.field+.field{margin-top:10px}.hero-title{font-size:26px;font-weight:800;letter-spacing:-.03em;margin:0}.spinner{width:20px;height:20px;border:2.5px solid var(--border-strong);border-top-color:var(--forest);border-radius:999px;animation:spin .7s linear infinite}.center-screen{min-height:100vh;display:grid;place-items:center}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pop{0%{transform:scale(.4);opacity:0}to{transform:scale(1);opacity:1}}@keyframes slideUp{0%{transform:translateY(8px);opacity:0}to{transform:translateY(0);opacity:1}}.fade{animation:slideUp .2s ease}