:root{--bg: #fbfbfa;--surface: #ffffff;--surface-2: #f4f4f2;--line: #e6e5e1;--text: #16161d;--muted: #6b6b76;--accent: #4338ca;--accent-soft: #eeecfc;--accent-contrast: #ffffff;--danger: #c2483a;--danger-soft: #fbecea;--good: #16794f;--good-soft: #e9f7ef;--radius-sm: 8px;--radius: 14px;--radius-lg: 20px;--shadow-sm: 0 1px 2px rgba(20, 20, 25, .05);--shadow-md: 0 10px 28px rgba(20, 20, 25, .08), 0 2px 6px rgba(20, 20, 25, .04);--font-body: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-display: "Inter Tight", var(--font-body);color-scheme:light;font-family:var(--font-body);font-size:16px;line-height:1.6}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);-webkit-text-size-adjust:100%}main{max-width:46rem;margin:0 auto;padding:1.75rem 1.25rem calc(5.5rem + env(safe-area-inset-bottom))}h1{font-family:var(--font-display);font-size:1.65rem;font-weight:700;letter-spacing:-.015em;margin:0}h2{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 .5rem}p{margin:0 0 .75rem}.lede{color:var(--muted);font-size:.925rem;margin:.25rem 0 1.25rem}.empty{color:var(--muted);padding:2rem 0;text-align:center}textarea{width:100%;padding:.75rem;margin-bottom:.75rem;background:var(--surface-2);color:var(--text);border:1px solid var(--line);border-radius:var(--radius);font:inherit;resize:vertical}textarea:focus-visible{outline:2px solid var(--accent);border-color:transparent}textarea:disabled{opacity:.75}.btn{width:100%;padding:.8rem 1rem;background:var(--accent);color:var(--accent-contrast);border:none;border-radius:var(--radius);font:inherit;font-weight:650;cursor:pointer;transition:background-color .15s ease,transform .05s ease}.btn:hover:not(:disabled){background:#372fb0}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{background:var(--surface-2);color:var(--muted);cursor:not-allowed}.btn-quiet{width:auto;padding:.35rem .7rem;background:none;border:1px solid var(--line);border-radius:999px;color:var(--text);font:inherit;font-size:.85rem;cursor:pointer}.btn-icon{flex-shrink:0;width:2rem;height:2rem;background:none;border:none;border-radius:50%;color:var(--muted);font-size:1.4rem;line-height:1;cursor:pointer}.btn-icon:hover{background:var(--surface-2);color:var(--text)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.spinner{display:flex;align-items:center;gap:.6rem;color:var(--muted)}.spinner-dot{width:.6rem;height:.6rem;border-radius:50%;background:var(--accent);animation:pulse 1.1s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.25}50%{opacity:1}}.notice{padding:.85rem 1rem;border-radius:var(--radius);margin:1rem 0}.notice-error{background:var(--danger-soft);border:1px solid rgba(194,72,58,.3)}.notice p:last-of-type{margin-bottom:0}.notice .btn-quiet{margin-top:.7rem}.notice-hint{color:var(--muted);font-size:.875rem}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1rem;margin-bottom:1rem}.card .btn{margin-top:.25rem}.topic-tag{color:var(--accent);font-size:.75rem;text-transform:uppercase;letter-spacing:.09em;margin-bottom:.4rem}.question{font-size:1.1rem;line-height:1.45}.brief-meta{color:var(--muted);font-size:.875rem}.answer{margin:1.25rem 0;font-size:1.02rem}.answer p{margin-bottom:1rem}.answer ul{margin:0 0 1rem;padding-left:1.25rem}.answer li{margin-bottom:.45rem}.answer strong{font-weight:680}.cite-marker{display:inline-flex;align-items:center;justify-content:center;min-width:1.35rem;height:1.35rem;margin:0 .1rem;padding:0 .3rem;vertical-align:2px;background:var(--accent-soft);color:var(--accent);border:none;border-radius:999px;font:inherit;font-size:.72rem;font-weight:700;cursor:pointer;transition:background-color .15s,color .15s}.cite-marker:hover{background:var(--accent);color:var(--accent-contrast)}.sources ol{margin:0;padding-left:1.4rem}.source{padding:.4rem .5rem;margin-bottom:.25rem;border-radius:8px;color:var(--muted);font-size:.9rem;transition:background .25s,color .25s}.source.active{background:var(--accent-soft);color:var(--text)}.score-row{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;margin-bottom:.75rem}.score-big{font-size:2.4rem;font-weight:700;line-height:1}.score-of{color:var(--muted);font-size:.55em;font-weight:500}.pips{display:flex;gap:.3rem}.pip{width:.7rem;height:.7rem;border-radius:50%;border:1px solid var(--line)}.pip.on{background:var(--accent);border-color:var(--accent)}.subscores{display:grid;gap:.75rem;margin:1rem 0 1.25rem}.subscore{display:grid;grid-template-columns:3.5rem 1fr;align-items:center;gap:.5rem .75rem}.subscore-value{font-size:1.15rem;font-weight:650}.subscore-label{color:var(--muted);font-size:.9rem}.subscore-bar{grid-column:1 / -1;height:5px;border-radius:3px;background:var(--surface-2);overflow:hidden}.subscore-bar span{display:block;height:100%;background:var(--accent);border-radius:3px}.reveal{border-color:var(--accent);animation:reveal .45s ease-out}.reveal h2{color:var(--accent)}@keyframes reveal{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.unsupported{margin:1rem 0;padding:.9rem 1rem;background:var(--danger-soft);border:1px solid rgba(194,72,58,.35);border-left-width:4px;border-radius:var(--radius)}.unsupported h2{color:var(--danger)}.directive{display:inline-block;margin-bottom:.5rem;padding:.3rem .75rem;background:var(--accent);color:var(--accent-contrast);border-radius:999px;font-size:.95rem;font-weight:700}.wordcount{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.25rem 1rem;margin-bottom:.75rem;color:var(--muted);font-size:.875rem;font-variant-numeric:tabular-nums}.wordcount.short{color:var(--danger)}.wordcount.over{color:var(--accent)}.charcount{margin:-.25rem 0 .75rem;color:var(--muted);font-size:.8rem;text-align:right;font-variant-numeric:tabular-nums}.charcount.over{color:var(--danger)}.scope-bar{display:flex;flex-wrap:wrap;align-items:baseline;gap:.4rem .75rem;margin-bottom:1rem;padding:.6rem .85rem;background:var(--surface-2);border-left:3px solid var(--accent);border-radius:8px;font-size:.9rem}.scope-bar strong{font-weight:650}.scope-clear{margin-left:auto;padding:0;background:none;border:none;color:var(--muted);font:inherit;font-size:.85rem;text-decoration:underline;text-underline-offset:3px;cursor:pointer}.scope-clear:hover{color:var(--text)}.next-hint{margin:0 0 1rem;color:var(--muted)}.next-hint a{color:var(--accent)}.topics,.history{list-style:none;margin:0;padding:0}.topic,.history li{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.85rem 1rem;margin-bottom:.5rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}.topic.untouched{background:none;border-style:dashed}.topic-main{min-width:0;display:flex;flex-direction:column;gap:.15rem}.topic-name{font-weight:600}.topic-book{color:var(--muted);font-size:.8rem}.topic-meta{color:var(--muted);font-size:.825rem}.topic-score{flex-shrink:0;font-size:1.3rem;font-weight:650;font-variant-numeric:tabular-nums}.badge{flex-shrink:0;padding:.2rem .6rem;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:.75rem}.subjects{display:grid;gap:.75rem}.subject{border:1px solid var(--line);border-radius:var(--radius)}.subject>summary{display:flex;align-items:center;gap:.6rem;padding:.85rem 1rem;list-style:none;cursor:pointer;font-weight:650}.subject>summary::-webkit-details-marker{display:none}.subject>summary:after{content:"";width:.45rem;height:.45rem;margin-left:auto;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(-45deg);transition:transform .2s}.subject[open]>summary:after{transform:rotate(45deg)}.subject[open]>summary{border-bottom:1px solid var(--line)}.subject-count{color:var(--muted);font-weight:500;font-size:.85rem;font-variant-numeric:tabular-nums}.subject>.topics{padding:.6rem}.nudges{margin-bottom:1.25rem;display:grid;gap:.5rem}.nudge{display:flex;align-items:flex-start;gap:.75rem;padding:.75rem .75rem .75rem 1rem;background:var(--surface-2);border-left:3px solid var(--accent);border-radius:8px}.nudge p{margin:.2rem 0 0;font-size:.925rem}.reason{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.reason-weak{color:var(--danger)}.reason-never{color:var(--accent)}.reason-stale{color:var(--good)}.login{min-height:70vh;display:flex;align-items:center;justify-content:center}.login-card{width:100%;max-width:22rem;padding:2rem 1.75rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}.login-brand{text-align:center;margin-bottom:1.75rem}.login-mark{font-size:1.9rem;font-weight:700;letter-spacing:-.02em;color:var(--accent)}.login-tagline{margin:.4rem 0 0;color:var(--muted);font-size:.9rem}.login-form{display:grid;gap:.9rem}.login-form label{display:grid;gap:.3rem}.login-form label span{font-size:.8rem;color:var(--muted)}.login-form input{width:100%;padding:.7rem .75rem;background:var(--surface-2);color:var(--text);border:1px solid var(--line);border-radius:var(--radius);font:inherit}.login-form input:focus-visible{outline:2px solid var(--accent);border-color:transparent}.login-form .btn{margin-top:.35rem}.login-foot{margin:1.5rem 0 0;text-align:center;color:var(--muted);font-size:.8rem}.login-tabs{display:flex;margin-bottom:1.25rem;padding:.25rem;background:var(--surface-2);border-radius:var(--radius)}.login-tabs button{flex:1;padding:.55rem .5rem;background:none;border:none;border-radius:var(--radius-sm);color:var(--muted);font:inherit;font-size:.85rem;font-weight:600;cursor:pointer;transition:background-color .15s,color .15s}.login-tabs button.active{background:var(--surface);color:var(--text);box-shadow:var(--shadow-sm)}.onboarding-card{max-width:28rem}.onboarding-options{display:grid;gap:.6rem;margin:.25rem 0 1.25rem}.onboarding-option{display:flex;align-items:flex-start;gap:.75rem;width:100%;padding:.85rem 1rem;text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);color:var(--text);font:inherit;font-size:.92rem;line-height:1.4;cursor:pointer;transition:border-color .15s,background-color .15s}.onboarding-option:hover:not(:disabled){border-color:var(--accent)}.onboarding-option:disabled{opacity:.5;cursor:not-allowed}.onboarding-option.selected{background:var(--accent-soft);border-color:var(--accent)}.onboarding-check{flex-shrink:0;width:1.1rem;height:1.1rem;margin-top:.1rem;border:1.5px solid var(--line);border-radius:50%;position:relative}.onboarding-option.selected .onboarding-check{background:var(--accent);border-color:var(--accent)}.onboarding-option.selected .onboarding-check:after{content:"";position:absolute;left:3px;top:1px;width:5px;height:8px;border:solid var(--accent-contrast);border-width:0 2px 2px 0;transform:rotate(45deg)}.login-check-email{padding:.9rem 1rem;background:var(--accent-soft);border-radius:var(--radius);color:var(--text);font-size:.9rem}.learn-search{margin-bottom:.6rem}.learn-search input{width:100%;padding:.85rem 1rem;background:var(--surface-2);color:var(--text);border:1px solid var(--line);border-radius:var(--radius);font:inherit;font-size:1.05rem}.learn-search input:focus-visible{outline:2px solid var(--accent);border-color:transparent}.learn-browse-toggle{margin-bottom:1.25rem;padding:0;background:none;border:none;color:var(--muted);font:inherit;font-size:.875rem;text-decoration:underline;text-underline-offset:3px;cursor:pointer}.learn-browse-toggle:hover{color:var(--text)}.learn-browse{margin-bottom:1.25rem}.learn-branch{display:grid;gap:.35rem;padding:.5rem .6rem .6rem}.learn-list{display:grid;gap:.6rem}.learn-card,.learn-row{display:grid;gap:.2rem;width:100%;text-align:left;padding:.85rem 1rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);color:var(--text);font:inherit;cursor:pointer}.learn-row{padding:.6rem .75rem;background:var(--surface-2)}.learn-card:hover,.learn-row:hover{border-color:var(--accent)}.syllabus-item{display:flex;flex-direction:row;align-items:flex-start;gap:.6rem;cursor:pointer}.syllabus-item input[type=checkbox]{flex:none;margin-top:.2rem;width:1.1rem;height:1.1rem;accent-color:var(--accent)}.syllabus-text{line-height:1.45}.syllabus-text.done{color:var(--muted);text-decoration:line-through}.learn-card-head{display:flex;align-items:baseline;justify-content:space-between;gap:.75rem}.learn-card-meta{color:var(--muted);font-size:.8rem}.learn-card-why{min-width:0;color:var(--muted);font-size:.875rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.learn-badge{flex-shrink:0;padding:.15rem .55rem;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em}.learn-badge.new{color:var(--accent);border-color:#4338ca59}.learn-badge.weak{color:var(--danger);border-color:#c2483a59}.learn-badge.stale{color:var(--good);border-color:#16794f59}.chapter-head{margin-bottom:1.25rem}.chapter-meta{color:var(--muted);font-size:.9rem;margin:.3rem 0 0}.coming-soon{color:var(--muted);margin:1rem 0 1.5rem}.prose{margin:1rem 0 1.5rem}.prose h2,.prose h3,.prose h4{color:var(--text);text-transform:none;letter-spacing:normal;margin:1.25rem 0 .5rem}.prose h2{font-size:1.15rem}.prose h3{font-size:1rem}.prose h4{font-size:.95rem;color:var(--muted)}.prose p{margin:0 0 .85rem}.prose ul,.prose ol{margin:0 0 .85rem;padding-left:1.25rem}.prose li{margin-bottom:.35rem}.prose strong{font-weight:680}.excerpts{display:grid;gap:.75rem;margin:1rem 0}.excerpt{padding:.85rem 1rem;background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--line);border-radius:8px}.excerpt p{margin:0;font-size:.95rem}.excerpt-page{display:block;margin-top:.5rem;color:var(--muted);font-size:.75rem;font-variant-numeric:tabular-nums}.show-more{display:block;margin:0 auto 1rem}.sticky-action{position:sticky;bottom:calc(3.5rem + env(safe-area-inset-bottom));margin-top:1.5rem;padding-top:.75rem;background:linear-gradient(to top,var(--bg) 70%,transparent)}.map-prompt{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;margin-bottom:.75rem}.map-prompt p{margin:0;font-size:1.05rem}.map-prompt strong{color:var(--accent)}.map-score{flex-shrink:0;color:var(--muted);font-variant-numeric:tabular-nums}.india-map{width:100%;height:min(58vh,32rem);display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:.75rem}.india-map .feature{fill:var(--surface-2);stroke:var(--muted);stroke-width:.5;stroke-linejoin:round;cursor:pointer;transition:fill .15s}.india-map .feature:hover{fill:var(--accent-soft)}.india-map .feature:focus-visible{outline:none;stroke:var(--accent);stroke-width:1.4}.india-map .feature.answer{fill:var(--accent);stroke:var(--accent)}.india-map .feature.wrong{fill:var(--danger);stroke:var(--danger)}.map-feedback{margin-top:1rem}.map-feedback p{font-size:1rem}.map-feedback.right p{color:var(--good)}.map-feedback.wrong p{color:var(--danger)}.tabs{position:fixed;inset:auto 0 0;display:flex;align-items:center;background:#ffffffe0;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--line);box-shadow:0 -8px 24px #1414190d;padding-bottom:env(safe-area-inset-bottom)}.tabs a{flex:1;padding:.85rem .25rem;color:var(--muted);font-size:.78rem;font-weight:600;text-align:center;text-decoration:none;transition:color .15s}.tabs a.active{color:var(--accent);box-shadow:inset 0 2px 0 var(--accent)}.signout-corner{position:fixed;top:max(.85rem,env(safe-area-inset-top));right:1rem;z-index:5;padding:.4rem .75rem;background:var(--surface);border:1px solid var(--line);border-radius:999px;box-shadow:var(--shadow-sm);color:var(--muted);font:inherit;font-size:.72rem;font-weight:600;cursor:pointer;transition:color .15s,border-color .15s}.signout-corner:hover{color:var(--danger);border-color:#c2483a59}.segmented{display:flex;margin-bottom:1.25rem;padding:.25rem;background:var(--surface-2);border-radius:var(--radius)}.segmented button{flex:1;padding:.55rem .5rem;background:none;border:none;border-radius:var(--radius-sm);color:var(--muted);font:inherit;font-size:.88rem;font-weight:600;cursor:pointer;transition:background-color .15s,color .15s}.segmented button.active{background:var(--surface);color:var(--text);box-shadow:var(--shadow-sm)}.roadmap{margin:0 0 1.5rem;padding:1.1rem 1rem 1.25rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.roadmap h2{margin-bottom:.75rem}.roadmap-svg{width:100%;height:auto;display:block;overflow:visible}.roadmap-svg text{font-family:var(--font-body);fill:var(--text);dominant-baseline:alphabetic}.roadmap-badge{fill:var(--accent-soft);stroke:none}.roadmap-icon{color:var(--accent)}.roadmap-line,.roadmap-divider{stroke:var(--line);stroke-width:1.5}.roadmap-label{font-size:13px;font-weight:650}.roadmap-detail{font-size:12px;fill:var(--muted)}.roadmap-step-index{font-size:11px;font-weight:700;fill:var(--muted);text-anchor:end}.roadmap-side-heading{font-size:13px;font-weight:700}.roadmap-item{font-size:12.5px;fill:var(--text)}.roadmap-bullet,.roadmap-root{fill:var(--accent)}.roadmap-root-label{font-size:13px;font-weight:700;fill:var(--accent-contrast);text-anchor:middle}.roadmap-branch{fill:var(--surface-2);stroke:var(--line);stroke-width:1}.mcq-progress{margin:0 0 .35rem;color:var(--muted);font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em}.mcq-prompt{font-size:1.1rem;font-weight:600;line-height:1.45;margin-bottom:1rem}.mcq-options{display:grid;gap:.6rem;margin-bottom:1rem}.mcq-option{width:100%;padding:.75rem 1rem;text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);color:var(--text);font:inherit;font-size:.95rem;cursor:pointer;transition:border-color .15s,background-color .15s}.mcq-option:hover:not(:disabled){border-color:var(--accent)}.mcq-option:disabled{cursor:default}.mcq-option.faded{opacity:.55}.mcq-option.correct{background:var(--good-soft);border-color:var(--good);color:var(--good);font-weight:650}.mcq-option.incorrect{background:var(--danger-soft);border-color:var(--danger);color:var(--danger);font-weight:650}.mcq-explanation{padding:.9rem 1rem;border-radius:var(--radius);animation:reveal .35s ease-out}.mcq-explanation.correct{background:var(--good-soft)}.mcq-explanation.incorrect{background:var(--danger-soft)}.mcq-verdict{font-weight:700;margin-bottom:.3rem}.mcq-explanation.correct .mcq-verdict{color:var(--good)}.mcq-explanation.incorrect .mcq-verdict{color:var(--danger)}.mcq-explanation .btn{margin-top:.6rem}.mcq-summary{display:flex;flex-direction:column;align-items:center;text-align:center;gap:.25rem;padding:1.75rem 1rem}.mcq-summary .btn{width:auto;padding:.7rem 1.5rem;margin-top:1rem}.doubts-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem}.doubt-thread{display:flex;flex-direction:column;gap:1rem;margin:1.25rem 0}.doubt-msg-user{align-self:flex-end;max-width:85%;padding:.65rem .95rem;background:var(--accent);color:var(--accent-contrast);border-radius:var(--radius-lg) var(--radius-lg) 4px var(--radius-lg);font-size:.95rem;line-height:1.45;white-space:pre-wrap}.doubt-msg-assistant{align-self:flex-start;max-width:100%;width:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg) var(--radius-lg) var(--radius-lg) 4px;box-shadow:var(--shadow-sm);overflow:hidden}.doubt-msg-assistant .prose{margin:.9rem 1rem 1rem}.basis-label{display:flex;align-items:center;gap:.4rem;padding:.55rem 1rem;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em}.basis-label svg{width:15px;height:15px;flex-shrink:0}.basis-label.corpus{background:var(--accent-soft);color:var(--accent)}.basis-label.general{background:var(--surface-2);color:var(--muted)}.doubt-composer{display:flex;align-items:flex-end;gap:.6rem;position:sticky;bottom:calc(4.5rem + env(safe-area-inset-bottom))}.doubt-composer textarea{flex:1;margin:0;min-height:2.75rem;max-height:8rem}.doubt-composer .btn{width:auto;padding:.75rem 1.25rem}.doubt-limit{padding:1rem 1.1rem;background:var(--surface-2);border-radius:var(--radius)}.doubt-limit p:first-child{font-weight:650;margin:0 0 .3rem}.doubt-limit p:last-child{margin:0}.digest-item{padding:1rem 1.1rem;margin-bottom:1rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}.digest-tag{display:inline-block;padding:.2rem .6rem;margin-bottom:.6rem;background:var(--accent-soft);color:var(--accent);border-radius:999px;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em}.digest-summary{margin:0 0 .7rem}.digest-source{color:var(--accent);font-size:.88rem;font-weight:600;text-decoration:none}.digest-source:hover{text-decoration:underline}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}