:root{
  --bg:#f5f7fb;--surface:#fff;--surface2:#f0f3f8;--text:#172033;--muted:#6b7485;
  --line:#e3e7ef;--accent:#5b5cf0;--accent2:#7c3aed;--good:#16834a;--bad:#c0392b;
  --shadow:0 12px 30px rgba(22,31,55,.07);--radius:18px;
  color-scheme:light;
}
*{box-sizing:border-box}
html{min-width:320px;background:var(--bg);-webkit-text-size-adjust:100%}
body{margin:0;min-width:320px;overflow-x:hidden;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;-webkit-tap-highlight-color:transparent}
body.modal-open{overflow:hidden}
button,input,textarea,select{font:inherit}
button{cursor:pointer;touch-action:manipulation}
button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(91,92,240,.25);outline-offset:2px}
.app-shell{min-height:100vh;min-height:100dvh;display:flex}
.sidebar{width:250px;background:#111827;color:#fff;padding:24px 16px calc(24px + env(safe-area-inset-bottom));display:flex;flex-direction:column;position:fixed;inset:0 auto 0 0;z-index:20}
.brand{display:flex;gap:12px;align-items:center;padding:0 8px 26px}.brand-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,#7c3aed,#4f46e5);display:grid;place-items:center;font-weight:900;flex:0 0 auto}
.brand strong{display:block;font-size:15px}.brand span{display:block;color:#9ca3af;font-size:11px;margin-top:2px}
nav{display:grid;gap:7px}.nav-item{min-height:46px;border:0;background:transparent;color:#aeb6c5;text-align:left;padding:12px 13px;border-radius:12px}.nav-item:hover,.nav-item.active{background:#242b3a;color:#fff}
.sidebar-footer{margin-top:auto;padding:14px 8px;color:#9ca3af}.mini-progress{height:6px;background:#2a3345;border-radius:9px;overflow:hidden;margin-bottom:8px}.mini-progress div{height:100%;background:#7c3aed;width:0}
.main{margin-left:250px;width:calc(100% - 250px);padding:0 32px calc(50px + env(safe-area-inset-bottom))}.topbar{min-height:92px;display:flex;gap:18px;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);margin-bottom:28px;padding-top:env(safe-area-inset-top)}
.title-wrap{min-width:0}.eyebrow{font-size:10px;font-weight:800;letter-spacing:.12em;color:var(--accent);margin-bottom:3px}.hero-eyebrow{color:#a5b4fc}h1{font-size:28px;margin:0;line-height:1.15}.topbar-actions{display:flex;align-items:center;justify-content:flex-end;gap:10px;flex-wrap:wrap}.streak{background:#fff;border:1px solid var(--line);padding:10px 14px;border-radius:999px;font-weight:700;white-space:nowrap}.mobile-menu{display:none;min-width:44px;min-height:44px;border:0;background:transparent;font-size:24px;border-radius:10px}.install-btn{min-height:42px;border:1px solid rgba(91,92,240,.28);background:#fff;color:var(--accent);padding:9px 13px;border-radius:12px;font-weight:800;white-space:nowrap}.install-btn:hover{background:#f1f1ff}.install-state{font-size:12px;font-weight:800;color:var(--good);background:#ecf9f1;border:1px solid #ccebd8;padding:9px 12px;border-radius:999px;white-space:nowrap}
.view{display:none}.view.active{display:block}.grid{display:grid;gap:18px}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.stats-grid{margin-top:18px}
.card{min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.hero{padding:28px;background:linear-gradient(135deg,#171d30,#29324b);color:#fff;border:0}.hero h2{font-size:32px;margin:4px 0 10px}.hero p{color:#d4d9e5;max-width:680px;line-height:1.6}
.metric{font-size:30px;font-weight:900;margin:7px 0}.muted{color:var(--muted)}.small{font-size:12px}.tag{display:inline-flex;max-width:100%;padding:5px 9px;border-radius:999px;background:#eef0ff;color:#4c45bd;font-size:11px;font-weight:800;margin:3px;white-space:normal}.red-flag{line-height:1.35}.btn{min-height:44px;border:0;border-radius:12px;padding:11px 15px;font-weight:800;background:var(--accent);color:#fff}.btn:hover{filter:brightness(.95)}.btn.secondary{background:var(--surface2);color:var(--text)}.btn.good{background:var(--good)}.btn.danger{background:var(--bad)}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}.action-row{margin-top:10px}.progress{height:9px;background:#e9edf4;border-radius:10px;overflow:hidden}.progress>div{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));width:0;transition:.3s}.card-progress{margin-top:10px}.section-title{margin:28px 0 13px;font-size:18px}
.term-card{min-height:205px;display:flex;flex-direction:column;justify-content:space-between}.term-card>.btn{margin-top:16px}.term-word{font-size:25px;font-weight:900;margin-top:8px}.definition{line-height:1.55}.formula{background:#f7f7ff;border-left:4px solid var(--accent);padding:10px 12px;border-radius:8px;margin-top:10px}.term-details{margin-top:10px}.term-details summary{cursor:pointer;font-weight:700}
.filterbar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}.filterbar button{min-height:42px;border:1px solid var(--line);background:#fff;padding:9px 12px;border-radius:10px}.filterbar button.active{background:#171d30;color:#fff}.quiz{max-width:800px;margin:auto}.quiz h2{font-size:25px}.quiz-card{margin-top:12px}.option{width:100%;min-height:50px;text-align:left;border:1px solid var(--line);background:#fff;padding:14px;border-radius:12px;margin:8px 0}.option:hover{border-color:var(--accent)}.option.correct{border-color:var(--good);background:#ecf9f1}.option.wrong{border-color:var(--bad);background:#fff0ee}.feedback{margin-top:15px;padding:15px;border-radius:12px;background:#f5f7fb;line-height:1.55}.feedback-next{margin-top:12px}.memory-card{margin-top:18px}
textarea{width:100%;min-height:150px;border:1px solid var(--line);border-radius:14px;padding:14px;resize:vertical;outline:none;background:#fff;color:var(--text)}.input{width:100%;border:1px solid var(--line);border-radius:12px;padding:12px;outline:none;background:#fff;color:var(--text)}.input:focus,textarea:focus{border-color:var(--accent)}.pitch-select{width:auto;max-width:100%}.pitch-part{padding:14px;background:#f8f9fc;box-shadow:none}.score-pitch{margin-top:10px}.pitch-checklist{margin-top:14px}.score-copy{flex:1;min-width:180px}
.score-ring{width:110px;height:110px;flex:0 0 auto;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--accent) calc(var(--score)*1%),#e9edf4 0);position:relative}.score-ring:after{content:"";position:absolute;inset:10px;background:#fff;border-radius:50%}.score-ring span{position:relative;z-index:1;font-size:23px;font-weight:900}.timeline{display:grid;gap:10px}.day{display:grid;grid-template-columns:60px minmax(0,1fr);gap:14px;align-items:start}.day-num{background:#111827;color:#fff;border-radius:12px;padding:10px;text-align:center;font-weight:900}.done .day-num{background:var(--good)}.day h3{margin:0 0 5px}.day p{margin:0;color:var(--muted);line-height:1.5}.roadmap-timeline,.roadmap-rule{margin-top:18px}.roadmap-tag{margin-top:9px}
.sim-chat{height:330px;overflow:auto;background:#f5f7fb;border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:10px;-webkit-overflow-scrolling:touch}.bubble{max-width:82%;overflow-wrap:anywhere;padding:11px 13px;border-radius:14px;line-height:1.45}.bubble.ai{background:#fff;border:1px solid var(--line);align-self:flex-start}.bubble.you{background:#e9e9ff;align-self:flex-end}.sim-input{margin-top:12px}
.toast{position:fixed;right:max(20px,env(safe-area-inset-right));bottom:max(20px,env(safe-area-inset-bottom));max-width:min(420px,calc(100vw - 32px));background:#111827;color:#fff;padding:12px 16px;border-radius:12px;opacity:0;pointer-events:none;transform:translateY(10px);transition:.2s;z-index:100}.toast.show{opacity:1;transform:translateY(0)}
.modal[hidden]{display:none}.modal{position:fixed;inset:0;z-index:200;background:rgba(17,24,39,.55);display:grid;place-items:center;padding:20px}.modal-card{width:min(520px,100%);background:#fff;border-radius:20px;padding:22px;box-shadow:0 24px 70px rgba(0,0,0,.22)}.modal-card h2{margin:0;font-size:22px}.icon-btn{width:44px;height:44px;border:0;border-radius:12px;background:var(--surface2);font-size:28px;line-height:1}.install-help{line-height:1.7;color:var(--text)}.modal-ok{width:100%;margin-top:4px}
@media(max-width:1050px){.topbar{align-items:flex-start;padding-top:18px;padding-bottom:16px}.topbar-actions{max-width:360px}.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:720px){
  .sidebar{width:min(88vw,310px);transform:translateX(-105%);transition:transform .2s ease;padding-top:calc(20px + env(safe-area-inset-top));box-shadow:18px 0 50px rgba(0,0,0,.18)}.sidebar.open{transform:translateX(0)}
  .main{margin-left:0;width:100%;padding:0 14px calc(32px + env(safe-area-inset-bottom))}.mobile-menu{display:block;flex:0 0 auto}.topbar{min-height:82px;margin-bottom:18px;gap:8px;align-items:center;padding-top:calc(8px + env(safe-area-inset-top));padding-bottom:8px}.title-wrap{flex:1}.eyebrow{font-size:9px}h1{font-size:21px}.topbar-actions{gap:6px;max-width:none;flex-wrap:nowrap}.streak{font-size:11px;padding:9px 10px}.install-btn{font-size:12px;min-height:40px;padding:8px 10px}.install-state{font-size:10px;padding:8px 9px;max-width:120px;white-space:normal;text-align:center}
  .grid-4,.grid-3,.grid-2{grid-template-columns:1fr}.card{padding:17px;border-radius:16px}.hero{padding:22px}.hero h2{font-size:25px}.hero .row .btn{flex:1 1 100%}.metric{font-size:27px}.section-title{margin-top:23px}.filterbar{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;margin-right:-14px;padding-right:14px;scrollbar-width:none}.filterbar::-webkit-scrollbar{display:none}.filterbar button{white-space:nowrap;flex:0 0 auto}.quiz h2{font-size:21px}.action-row .btn{flex:1 1 140px}.pitch-select{width:100%;margin-top:6px}.sim-chat{height:300px}.bubble{max-width:92%}.roadmap-head{align-items:flex-start}.roadmap-head .score-ring{width:86px;height:86px}.day{grid-template-columns:50px minmax(0,1fr);gap:11px}.day-num{padding:9px 5px}.toast{left:16px;right:16px;bottom:max(16px,env(safe-area-inset-bottom))}
}
@media(max-width:480px){.topbar .eyebrow{display:none}.topbar-actions{max-width:53%}.install-btn{white-space:normal;line-height:1.15}.streak{display:none}.hero p{line-height:1.5}.row.between{align-items:flex-start}.score-ring{width:92px;height:92px}.modal{padding:12px}.modal-card{padding:18px}.modal-card h2{font-size:20px}}
@media(display-mode:standalone){.install-btn{display:none!important}.install-state{display:inline-flex!important}}


/* Learning engine + mobile app navigation */
.daily-task{display:flex;flex-direction:column;align-items:flex-start;gap:8px;text-align:left;border:1px solid var(--border);cursor:pointer}.daily-task>span{font-size:24px}.daily-task.done{outline:2px solid rgba(91,92,240,.18)}.daily-task small{color:var(--muted)}
.recall-details{margin:16px 0}.recall-details summary{cursor:pointer;font-weight:800;color:var(--primary)}.recall-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:14px}.learn-intro{margin-bottom:14px}.learn-intro .input{width:100%;margin-top:12px}
.voice-recorder{border:1px solid var(--border);border-radius:18px;padding:16px;background:#f8faff;margin:16px 0}.voice-status{display:grid;grid-template-columns:auto 1fr;gap:2px 10px;align-items:center}.voice-status small{grid-column:2;color:var(--muted)}.rec-dot{width:12px;height:12px;border-radius:50%;background:#aeb6c8}.voice-recorder.recording .rec-dot{background:#e5484d;box-shadow:0 0 0 7px rgba(229,72,77,.12);animation:pulseRec 1.2s infinite}.voice-transcript{min-height:150px;max-height:320px;overflow:auto;margin:16px 0;padding:16px;border-radius:14px;background:#fff;border:1px solid var(--border);white-space:pre-wrap;line-height:1.55}.send-voice{background:#101828}.voice-card .action-row{align-items:stretch}.voice-card .action-row .btn{flex:1}.course-switch{display:flex;gap:6px;padding:4px;border:1px solid var(--border);border-radius:12px}.course-switch button{border:0;background:transparent;padding:10px 14px;border-radius:9px;font-weight:800;cursor:pointer}.course-switch button.active{background:var(--primary);color:#fff}
.bottom-nav{display:none}
@keyframes pulseRec{0%,100%{transform:scale(1)}50%{transform:scale(1.15)}}
@media(max-width:720px){
 body{padding-bottom:calc(78px + env(safe-area-inset-bottom))}.main{padding-bottom:30px}.sidebar{display:none!important}.mobile-menu{display:none!important}.topbar{padding-left:16px;padding-right:16px}.topbar .eyebrow{font-size:10px}.topbar-actions .streak{display:none}.install-btn{padding:10px 12px;font-size:12px}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.daily-grid{grid-template-columns:1fr 1fr}.card{border-radius:18px}.hero h2{font-size:28px}.term-card{min-height:0}.recall-actions{grid-template-columns:1fr}.voice-transcript{min-height:190px}.action-row{flex-direction:column}.action-row .btn{width:100%}.roadmap-head{align-items:flex-start;gap:14px}.course-switch{width:100%}.bottom-nav{position:fixed;z-index:1000;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(5,1fr);height:calc(68px + env(safe-area-inset-bottom));padding:5px 8px env(safe-area-inset-bottom);background:rgba(255,255,255,.96);backdrop-filter:blur(18px);border-top:1px solid var(--border);box-shadow:0 -8px 24px rgba(16,24,40,.08)}.bottom-nav-item{border:0;background:transparent;border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;color:#667085;font-weight:700;min-width:0}.bottom-nav-item span{font-size:21px;line-height:1}.bottom-nav-item small{font-size:10px}.bottom-nav-item.active{color:var(--primary);background:#f1f2ff}.bottom-nav-item:active{transform:scale(.97)}
}

/* Production AI v5 */
.ai-pill{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:800;white-space:nowrap}.ai-pill.online{background:#ecfdf3;color:#067647}.ai-pill.offline{background:#fff4ed;color:#b54708}.ai-mode-line{display:flex;gap:10px;align-items:center;margin-bottom:12px;flex-wrap:wrap}.ai-connect{margin-top:18px;padding-top:18px;border-top:1px solid var(--border)}.ai-connect .input{margin:8px 0}.ai-feedback details{margin-top:10px}.ai-feedback summary{cursor:pointer;font-weight:800}.voice-recorder.recording .voice-transcript{border-color:#ef4444;background:#fffafa}@media(max-width:720px){.ai-pill{font-size:10px;padding:6px 8px}}

/* Accelerated Coach + prominent install CTA v6 */
.v6-dashboard-top{display:grid;gap:16px;margin-bottom:18px}.install-cta{display:flex;align-items:center;justify-content:space-between;gap:22px;background:linear-gradient(135deg,#fff 0%,#f5f4ff 100%);border:1px solid rgba(91,92,240,.22)}.install-cta h2{margin:7px 0 5px}.install-cta p{margin:0;max-width:720px}.install-download{min-width:220px;min-height:52px;font-size:15px}.install-download:disabled{opacity:.68;cursor:default}.accel-coach{overflow:hidden}.accel-coach.running{border-color:rgba(91,92,240,.35);box-shadow:0 16px 42px rgba(91,92,240,.08)}.accel-head{align-items:flex-start;gap:18px}.accel-head h2{margin:7px 0}.accel-head p{max-width:780px;line-height:1.55}.accel-clock{flex:0 0 auto;min-width:118px;text-align:center;padding:13px 15px;border-radius:16px;background:#101828;color:#fff}.accel-clock strong{display:block;font-size:24px;font-variant-numeric:tabular-nums}.accel-clock small{display:block;margin-top:3px;color:#cfd4dc}.accel-targets{display:flex;gap:8px;margin:18px 0 14px}.accel-targets button{border:1px solid var(--border);background:#fff;border-radius:12px;min-height:44px;padding:9px 16px;font-weight:800;cursor:pointer}.accel-targets button.active{background:var(--primary);border-color:var(--primary);color:#fff}.accel-targets button:disabled{cursor:not-allowed;opacity:.72}.accel-live{padding-top:4px}.accel-live>.row{font-size:13px}.accel-task{display:grid;grid-template-columns:42px 1fr;gap:12px;align-items:start;margin:16px 0;padding:16px;border-radius:16px;background:#f8faff;border:1px solid var(--border)}.accel-task>span{font-size:28px}.accel-task p{margin:5px 0;color:var(--muted);line-height:1.5}.accel-task small{color:var(--muted);font-variant-numeric:tabular-nums}.accel-actions{flex-wrap:wrap}.danger-lite{color:#b42318}.accel-preview{margin-top:12px;padding:16px;border-radius:16px;background:#f8faff}.accel-preview p{line-height:1.55}.accel-start{margin-top:4px;min-height:50px}.accel-coach .progress{margin-top:8px}
@media(max-width:720px){.install-cta{align-items:stretch;flex-direction:column}.install-download{width:100%;min-width:0}.accel-head{flex-direction:column}.accel-clock{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left}.accel-clock small{margin:0}.accel-targets{display:grid;grid-template-columns:repeat(3,1fr)}.accel-targets button{padding:8px}.accel-actions{display:grid;grid-template-columns:1fr 1fr}.accel-actions .btn{width:100%}.accel-task{grid-template-columns:36px 1fr}.accel-task>span{font-size:24px}}


/* v7: silent accelerated coach, controls directly under the timer */
.accel-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(330px,430px);align-items:start;gap:22px}
.accel-clock{width:100%;min-width:0;text-align:left;padding:18px;border-radius:18px}
.accel-clock strong{font-size:32px;line-height:1.1}
.accel-clock small{margin-top:5px}
.accel-controls-under-clock{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:16px}
.accel-controls-under-clock .btn{width:100%;min-height:42px;padding:9px 10px;font-size:12px}
.accel-controls-under-clock .btn:nth-child(3),.accel-controls-under-clock .btn:nth-child(5){grid-column:1/-1}
.accel-controls-under-clock .btn:disabled{opacity:.42;cursor:not-allowed}
@media(max-width:720px){
 .accel-head{grid-template-columns:1fr}
 .accel-clock{display:block;text-align:left}
 .accel-clock strong{font-size:30px}
 .accel-controls-under-clock{grid-template-columns:1fr 1fr}
 .accel-controls-under-clock .btn{font-size:12px}
}

/* v8 clear quiz feedback */
.answer-result{margin-top:18px;padding:12px 14px;border-radius:12px;font-size:18px}.answer-result.is-correct{background:#ecf9f1;color:#11683b}.answer-result.is-wrong{background:#fff0ee;color:#a52f24}.answer-line{margin-top:10px;padding:12px 14px;border-radius:12px;display:grid;gap:4px}.answer-line span{font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.04em}.wrong-line{background:#fff0ee;border:1px solid #f2c8c2;color:#8d2a21}.correct-line{background:#ecf9f1;border:1px solid #bfe4cd;color:#11683b}.lesson-feedback{background:#f7f8fb;border:1px solid var(--line)}.lesson-feedback p{margin:8px 0}.option:disabled{cursor:default}.feedback-next{width:100%;min-height:50px;font-size:15px}