:root{
  --ink:#101614;--muted:#62736c;--paper:#fff;--soft:#f0f8f3;--line:#dce9e1;--brand:#0b3d32;--brand2:#00a884;--lime:#d8ff54;--red:#b65344;--shadow:0 22px 70px rgba(11,61,50,.10);--shadow2:0 10px 28px rgba(11,61,50,.08);--r:20px;--safe-bottom:env(safe-area-inset-bottom,0px)
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;min-height:100vh;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:radial-gradient(circle at 3% -3%,rgba(0,168,132,.16),transparent 30rem),radial-gradient(circle at 94% 0,rgba(216,255,84,.25),transparent 26rem),linear-gradient(180deg,#fbfdf9,#eef7f2);line-height:1.55;overflow-x:hidden}
button,select{font:inherit;font-size:16px}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.65}select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 13px) 50%;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.top{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px max(18px,env(safe-area-inset-left)) 12px max(18px,env(safe-area-inset-right));border-bottom:1px solid rgba(220,233,225,.86);background:rgba(248,252,249,.88);backdrop-filter:blur(18px)}
.brand{display:flex;align-items:center;gap:11px;min-width:0}.brand b{width:48px;height:48px;flex:0 0 auto;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--lime),var(--brand2));color:#071611;font-weight:1000;box-shadow:0 10px 22px rgba(0,168,132,.22)}.brand span{min-width:0}.brand strong{display:block;font-size:1.05rem;letter-spacing:-.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.brand small{display:block;color:var(--muted);font-size:.82rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topstats{display:flex;gap:8px;justify-content:flex-end;flex-wrap:wrap}.chip{display:inline-flex;gap:6px;align-items:center;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.86);padding:8px 11px;color:var(--brand);font-size:.82rem;font-weight:900;white-space:nowrap}.chip b{color:var(--ink)}
.app{width:min(1180px,calc(100% - 28px));margin:16px auto 46px}.tabs{position:sticky;top:73px;z-index:40;display:flex;gap:8px;overflow-x:auto;margin:0 0 18px;padding:8px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.9);backdrop-filter:blur(16px);box-shadow:var(--shadow2);scrollbar-width:none}.tabs::-webkit-scrollbar{display:none}.tabs button{border:0;border-radius:14px;background:transparent;color:var(--muted);padding:11px 16px;font-weight:950;white-space:nowrap}.tabs button.on{background:#101614;color:#fff;box-shadow:0 10px 24px rgba(16,22,20,.16)}
.view{display:none}.view.on{display:block;animation:rise .2s ease}@keyframes rise{from{opacity:.35;transform:translateY(8px)}to{opacity:1;transform:none}}
h1{font-size:clamp(2.45rem,6vw,5.25rem);line-height:.92;margin:0 0 14px;letter-spacing:-.07em}h2{font-size:clamp(1.65rem,3.4vw,2.8rem);line-height:1;margin:0 0 8px;letter-spacing:-.045em}h3{margin:0 0 8px;letter-spacing:-.02em}p{color:var(--muted);margin:0 0 14px}.sectionHead{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin:4px 0 16px}.sectionHead p{max-width:720px;margin-bottom:0}
.hero,.subject,.panel,.lesson,.quizbox,.stat,.progressrow,.contextbar{border:1px solid rgba(220,233,225,.96);border-radius:var(--r);background:rgba(255,255,255,.9);box-shadow:var(--shadow)}.hero{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:18px;align-items:stretch;padding:clamp(20px,4vw,34px);background:radial-gradient(circle at 88% 12%,rgba(216,255,84,.34),transparent 17rem),radial-gradient(circle at 10% 90%,rgba(0,168,132,.11),transparent 18rem),rgba(255,255,255,.88)}.score{border-radius:calc(var(--r) - 4px);padding:24px;display:flex;flex-direction:column;justify-content:space-between;min-height:220px;background:linear-gradient(145deg,#071611,#0b3d32 64%,#cbff51);color:white;box-shadow:inset 0 1px 0 rgba(255,255,255,.12)}.score span,.score small{color:rgba(255,255,255,.76)}.score b{font-size:4.4rem;line-height:.9;letter-spacing:-.08em}.badge{display:inline-flex;align-items:center;width:max-content;border-radius:999px;padding:6px 10px;font-size:.75rem;font-weight:950;background:rgba(216,255,84,.43);color:#173a1f}.badge.soon{background:#edf4ef;color:var(--muted)}.actions{display:flex;gap:10px;flex-wrap:wrap}.btn{border:0;border-radius:15px;background:var(--lime);color:#071611;font-weight:950;padding:12px 16px;min-height:46px;box-shadow:0 12px 26px rgba(216,255,84,.20)}.btn.dark{background:#101614;color:#fff;box-shadow:0 14px 28px rgba(16,22,20,.16)}.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--brand);box-shadow:none}
.statgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:14px 0}.stat{padding:17px;min-height:118px;display:flex;flex-direction:column;justify-content:space-between}.stat span{color:var(--muted);font-weight:850;font-size:.83rem}.stat b{display:block;font-size:clamp(1.55rem,3vw,2.15rem);line-height:1;letter-spacing:-.05em;word-break:break-word}.coach{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.85fr);gap:14px;align-items:center}.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.flow span{border:1px solid var(--line);border-radius:13px;background:#f8fcf9;padding:12px;font-weight:950;text-align:center;color:var(--brand)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(245px,1fr));gap:14px}.subject{padding:18px;display:flex;flex-direction:column;gap:12px;min-height:0}.row{display:flex;align-items:center;justify-content:space-between;gap:12px}.mark{width:54px;height:54px;border-radius:17px;display:grid;place-items:center;background:#101614;color:var(--lime);font-weight:1000;font-size:.86rem}.meter,.miniMeter{border-radius:999px;background:#e4eee8;overflow:hidden}.meter{height:10px}.miniMeter{height:8px}.meter i,.miniMeter i{display:block;height:100%;background:linear-gradient(90deg,var(--brand2),var(--lime));transition:width .25s ease}.submeta{font-size:.85rem;margin:-4px 0 0}.chapterList{margin-top:auto}.list{display:grid;gap:8px}.chapter{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--line);border-radius:15px;background:#f9fcf9;padding:12px;text-align:left;color:var(--ink)}.chapter span{min-width:0}.chapter b,.chapter small{display:block}.chapter small{color:var(--muted);font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chapter strong{font-size:.9rem;color:var(--brand)}
.contextbar{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:14px;align-items:center;margin:0 0 10px;padding:14px 16px;background:linear-gradient(135deg,rgba(255,255,255,.93),rgba(240,248,243,.93))}.contextbar strong,.contextbar small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.contextbar small{color:var(--muted)}.eyebrow{font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;font-weight:950;color:var(--brand2)}.contextMeters span{display:block;text-align:right;font-weight:950;color:var(--brand);font-size:.84rem;margin-bottom:6px}.toolbar{position:sticky;top:145px;z-index:30;display:grid;grid-template-columns:1fr 1fr auto;gap:10px;margin:0 0 16px;padding:12px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);box-shadow:var(--shadow2)}.toolbar label,.panel label{display:block;font-size:.74rem;color:var(--muted);font-weight:950;text-transform:uppercase;letter-spacing:.07em;margin-bottom:6px}.toolbar select,.panel select{width:100%;border:1px solid var(--line);border-radius:14px;background-color:#fff;color:var(--ink);padding:12px 38px 12px 12px;min-height:48px}
.layout{display:grid;grid-template-columns:292px minmax(0,1fr);gap:14px;align-items:start}.topicRail{position:sticky;top:236px;display:grid;gap:8px}.topic{border:1px solid var(--line);border-radius:15px;background:#fff;padding:12px;text-align:left;color:var(--ink);font-weight:900}.topic span,.topic small{display:block}.topic small{font-size:.76rem;color:var(--muted);font-weight:800;margin-top:3px}.topic.on{background:#101614;color:#fff;border-color:#101614}.topic.on small{color:rgba(255,255,255,.72)}.lesson,.quizbox{padding:clamp(18px,3vw,28px);min-width:0}.lessonTop{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}.topicScore{width:60px;height:60px;border-radius:18px;display:grid;place-items:center;background:#101614;color:var(--lime);font-weight:1000}.concept{border:1px solid rgba(0,168,132,.18);border-radius:16px;background:linear-gradient(135deg,rgba(0,168,132,.08),rgba(216,255,84,.12));padding:14px;margin:14px 0}.concept h3{margin-bottom:4px}.note{display:grid;grid-template-columns:42px minmax(0,1fr);gap:10px;align-items:start;border:1px solid var(--line);border-left:5px solid var(--lime);border-radius:15px;background:var(--soft);padding:12px;margin:9px 0}.note b{display:grid;place-items:center;width:32px;height:32px;border-radius:10px;background:#101614;color:var(--lime);font-size:.78rem}.rules{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin:10px 0}.rule{border:1px solid var(--line);border-radius:14px;background:#f8fcf9;padding:11px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.9rem}.stickyActions{position:sticky;bottom:10px;margin-top:18px;padding:10px;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.86);backdrop-filter:blur(14px)}
.practiceGrid,.challengeGrid{display:grid;grid-template-columns:330px minmax(0,1fr);gap:14px;align-items:start}.panel{padding:18px}.topicCards{display:grid;gap:8px;margin-top:14px;max-height:440px;overflow:auto;padding-right:2px}.topicCard{border:1px solid var(--line);border-radius:15px;background:#fff;padding:12px;text-align:left;color:var(--ink)}.topicCard b,.topicCard span{display:block}.topicCard span{color:var(--muted);font-size:.8rem;margin:2px 0 8px}.scopeStats{display:grid;gap:8px;margin:12px 0}.scopeStats span{border:1px solid var(--line);background:#f8fcf9;border-radius:12px;padding:10px;color:var(--muted);font-size:.86rem;font-weight:850}.quizMeta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px}.quizMeta span:not(.badge){border:1px solid var(--line);border-radius:999px;background:#fff;padding:6px 10px;color:var(--muted);font-size:.78rem;font-weight:900}.question{font-size:clamp(1.35rem,2.6vw,2.25rem);line-height:1.08;margin:18px 0 8px}.quizTopic{font-size:.92rem}.choices{display:grid;gap:10px;margin-top:16px}.choice{width:100%;display:grid;grid-template-columns:36px minmax(0,1fr);gap:10px;align-items:center;border:1px solid var(--line);border-radius:16px;background:#fff;padding:13px;text-align:left;color:var(--ink)}.choice span{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;background:#f0f5f2;color:var(--brand);font-weight:1000}.choice b{font-weight:850}.choice.ok{background:#e7f8ed;border-color:#9ed7af}.choice.ok span{background:#0b3d32;color:#fff}.choice.no{background:#fae9e4;border-color:#e1aaa0}.choice.no span{background:var(--red);color:#fff}.feedback{display:none;margin-top:14px;border:1px solid var(--line);border-radius:16px;background:var(--soft);padding:14px}.feedback.show{display:block}.feedback b{display:block;margin-bottom:4px}.feedback p{margin:0}.quizActions{margin-top:14px}.complete{display:grid;gap:12px;place-items:start}.complete h2{font-size:clamp(2rem,5vw,4rem)}
.progressrow{padding:16px;margin:12px 0}.progressrow h3{margin:0}.chapterProgress{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:center;border-top:1px solid var(--line);padding-top:11px;margin-top:11px}.chapterProgress small{display:block;color:var(--muted);margin-top:3px}.empty{border:1px dashed var(--line);border-radius:16px;background:rgba(255,255,255,.9);padding:26px;text-align:center;color:var(--muted)}footer{margin-top:28px;padding:18px 0 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:.9rem}footer strong{color:var(--brand)}
@media(max-width:1040px){.hero,.coach{grid-template-columns:1fr}.score{min-height:170px}.layout,.practiceGrid,.challengeGrid{grid-template-columns:1fr}.topicRail{position:static;display:flex;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}.topicRail::-webkit-scrollbar{display:none}.topic{min-width:220px}.toolbar{position:static}.contextbar{grid-template-columns:1fr}.contextMeters span{text-align:left}.statgrid{grid-template-columns:repeat(2,minmax(0,1fr))}.rules{grid-template-columns:1fr}.flow{grid-template-columns:repeat(2,minmax(0,1fr))}.topicCards{max-height:none}.stickyActions{position:static}}
@media(max-width:680px){body{background:linear-gradient(180deg,#fbfdf9,#eef7f2)}.top{align-items:flex-start;padding:10px 12px}.brand b{width:42px;height:42px;border-radius:14px}.brand strong{font-size:1rem}.brand small{font-size:.74rem}.topstats{display:none}.app{width:100%;margin:10px 0 0;padding:0 10px calc(96px + var(--safe-bottom))}.tabs{position:fixed;left:8px;right:8px;bottom:calc(8px + var(--safe-bottom));top:auto;z-index:80;margin:0;padding:7px;border-radius:18px;box-shadow:0 18px 60px rgba(11,61,50,.22)}.tabs button{flex:0 0 auto;padding:10px 11px;font-size:.76rem;border-radius:13px}.hero{padding:20px;border-radius:18px}.score{padding:18px}.score b{font-size:3.3rem}.statgrid{grid-template-columns:1fr 1fr;gap:9px}.stat{min-height:96px;padding:13px}.stat b{font-size:1.45rem}.grid{grid-template-columns:1fr}.sectionHead{align-items:flex-start;flex-direction:column}.contextbar,.toolbar,.subject,.panel,.lesson,.quizbox,.progressrow{border-radius:17px}.toolbar{grid-template-columns:1fr;padding:10px}.topic{min-width:78vw}.lesson,.quizbox{padding:17px}.note{grid-template-columns:1fr}.note b{display:none}.practiceGrid,.challengeGrid{gap:10px}.choice{grid-template-columns:32px minmax(0,1fr);padding:12px}.choice span{width:28px;height:28px}.flow{grid-template-columns:1fr}.chapterProgress{grid-template-columns:1fr}.rules{gap:7px}footer{padding:16px 2px 0}}
@media(max-width:390px){.statgrid{grid-template-columns:1fr}.tabs button{font-size:.72rem;padding:9px 10px}.question{font-size:1.25rem}.score b{font-size:2.8rem}}