@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap";:root{--bg: #f4f4f0;--surface: #ffffff;--ink: #111111;--muted: #656565;--line: #d8d8d8;--accent: #ef4f1f;--accent-soft: #ffe7de;--good: #198754;--bad: #d64545;--shadow: 0 18px 34px -24px rgba(17, 17, 17, .28)}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:Plus Jakarta Sans,Segoe UI,sans-serif;color:var(--ink);background:radial-gradient(circle at 8% -12%,#fff2eb 0%,transparent 35%),radial-gradient(circle at 100% 12%,#f7f8e0 0%,transparent 28%),var(--bg);min-height:100vh}a{color:inherit}.loading-screen{min-height:100vh;display:grid;place-items:center;font-size:1rem;color:var(--muted)}.reveal{animation:rise .45s ease both}@keyframes rise{0%{transform:translateY(8px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes vocab-save-pulse{0%{box-shadow:0 0 color-mix(in srgb,var(--good) 26%,transparent)}to{box-shadow:0 0 0 8px transparent}}.app-shell{max-width:1400px;margin:0 auto;display:grid;grid-template-columns:240px minmax(0,1fr) 320px;gap:24px;padding:24px 24px 94px}.sidebar{position:sticky;top:22px;height:fit-content;padding:20px;border:1px solid var(--line);background:var(--surface);border-radius:24px;box-shadow:var(--shadow)}.brand-wrap{display:flex;gap:12px;align-items:center;margin-bottom:24px}.brand-badge{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;font-family:Outfit,sans-serif;font-weight:700;background:linear-gradient(145deg,#ef4f1f,#ff9f66);color:#fff}.brand-wrap h1{margin:0;font-family:Outfit,sans-serif;font-size:1.1rem}.brand-wrap p{margin:0;color:var(--muted);font-size:.85rem}.nav-menu{display:grid;gap:8px}.nav-item{padding:11px 12px;border-radius:12px;text-decoration:none;color:var(--ink);font-weight:600}.nav-item:hover{background:#f3f3f3}.nav-item.active{background:var(--accent-soft);color:var(--accent)}.profile-card{margin-top:24px;border-top:1px solid var(--line);padding-top:16px}.profile-name{margin:0;font-weight:700}.profile-sub{margin:4px 0 12px;font-size:.84rem;color:var(--muted)}.profile-card button,.feed-cta button,.post-actions button,.explore-controls button,.insight-card button,.auth-card button{font-family:inherit;border:0;border-radius:10px;cursor:pointer;background:var(--ink);color:#fff;padding:10px 14px;font-weight:600}.profile-card button:hover,.feed-cta button:hover,.post-actions button:hover,.explore-controls button:hover,.insight-card button:hover,.auth-card button:hover{opacity:.92}.feed-panel{max-width:640px;width:100%}.right-panel{position:sticky;top:22px;height:fit-content}.insight-card{background:var(--surface);border-radius:20px;border:1px solid var(--line);padding:16px;box-shadow:var(--shadow)}.insight-card h3,.insight-card h4{margin:0 0 10px;font-family:Outfit,sans-serif}.insight-card p{margin:6px 0;color:#383838}.micro-rules{margin-top:14px;border-top:1px solid var(--line);padding-top:10px}.stories-strip{display:flex;gap:10px;overflow-x:auto;margin-bottom:18px;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch}.story-pill{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:10px 14px;white-space:nowrap;font-size:.84rem;font-weight:600;scroll-snap-align:start}.feed-list{display:grid;gap:18px}.mcq-post{background:var(--surface);border-radius:20px;border:1px solid var(--line);overflow:hidden;box-shadow:var(--shadow)}.post-header{padding:14px 16px;display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--line)}.post-icon-actions{margin-left:auto;display:flex;gap:8px}.icon-btn{border:1px solid var(--line);background:#fff;border-radius:10px;width:34px;height:34px;display:grid;place-items:center;cursor:pointer}.avatar{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:#f5f5f5;font-weight:700}.post-topic{margin:0;font-weight:700}.post-meta{margin:3px 0 0;color:var(--muted);font-size:.8rem}.post-body{padding:18px 16px}.post-body h2{margin:0 0 14px;font-family:Outfit,sans-serif;font-size:1.06rem;line-height:1.42}.option-list{display:grid;gap:9px}.option-pill{width:100%;text-align:left;border:1px solid var(--line);border-radius:12px;background:#fff;display:flex;gap:10px;align-items:flex-start;padding:11px 12px;cursor:pointer;transition:border-color .2s ease,transform .2s ease,background .2s ease}.option-pill:hover{border-color:#b4b4b4;transform:translate(1px)}.option-pill span:first-child{min-width:24px;height:24px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;font-weight:700;font-size:.86rem}.option-pill.selected{border-color:#9f9f9f;background:#f8f8f8}.option-pill.correct{border-color:#1987547a;background:#1987541c}.option-pill.incorrect{border-color:#d645456e;background:#d6454517}.post-footer{padding:14px 16px 18px;border-top:1px solid var(--line);display:grid;gap:10px}.answer-feedback{padding:10px 12px;border-radius:12px;font-size:.93rem}.answer-feedback p{margin:4px 0}.answer-feedback-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.answer-feedback-copy{min-width:0}.answer-feedback-actions{margin-left:auto}.answer-feedback.correct{background:#1987541a;border:1px solid rgba(25,135,84,.25)}.answer-feedback.incorrect{background:#d645451a;border:1px solid rgba(214,69,69,.25)}.answer-feedback.pending{background:#1111110a;border:1px solid rgba(17,17,17,.1)}.explanation-block{background:#f8f8f8;border:1px solid var(--line);border-radius:12px;padding:11px;max-height:240px;overflow-y:auto}.explanation-utility-row{display:flex;justify-content:flex-end;margin-bottom:6px}.explanation-block p{margin:0;white-space:pre-wrap;line-height:1.45}.suggestion-reason{font-size:.83rem;color:#444;margin-bottom:10px!important}.explanation-tabs{display:flex;flex-wrap:nowrap;gap:7px;margin-bottom:10px;overflow-x:auto;padding-bottom:4px;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;touch-action:pan-x}.exp-tab{flex:0 0 auto;border:1px solid var(--line);background:#fff;color:#333;border-radius:999px;font-size:.78rem;padding:6px 10px;cursor:pointer;scroll-snap-align:start;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}.exp-tab.active{background:var(--accent-soft);color:var(--accent);border-color:transparent}.exp-codes{margin-top:10px!important;font-size:.84rem;color:var(--muted)}.rich-markdown{font-size:.92rem;line-height:1.5}.rich-markdown p{margin:0 0 8px}.rich-markdown .inline-link{color:var(--accent);text-decoration:underline;text-underline-offset:2px}.rich-markdown .citation-bubble{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink);font-size:.66rem;font-weight:700;margin:0 3px;text-decoration:none;vertical-align:middle}.rich-markdown .citation-bubble:hover{border-color:var(--accent);color:var(--accent)}.rich-markdown ul,.rich-markdown ol{margin:0 0 8px 16px;padding:0}.rich-markdown h1,.rich-markdown h2,.rich-markdown h3,.rich-markdown h4{margin:8px 0 6px;font-family:Outfit,sans-serif;font-size:.98rem}.ellipsis-pill{min-width:56px;min-height:30px;height:30px;border-radius:999px;border:1px solid var(--line);background:#fff;margin:8px auto 0;display:inline-flex;align-items:center;justify-content:center;padding:0 14px;letter-spacing:2px;line-height:1;cursor:pointer;font-weight:700}.tiny-note{font-size:.78rem}.lookup-panel{margin-top:10px;padding:10px;border:1px solid var(--line);border-radius:10px;background:#fffef8}.lookup-term{margin:0 0 6px!important;font-weight:700}.lookup-actions{display:flex;gap:8px}.lookup-actions button{border:1px solid var(--line);border-radius:8px;background:#fff;padding:6px 10px;cursor:pointer}.lookup-actions .vocab-save-btn{font-weight:700;border-color:color-mix(in srgb,var(--accent) 58%,var(--line));color:var(--accent);background:color-mix(in srgb,var(--accent) 11%,var(--surface));transition:border-color .18s ease,background-color .18s ease,color .18s ease,transform .18s ease}.lookup-actions .vocab-save-btn.saving{opacity:.86;cursor:wait}.lookup-actions .vocab-save-btn.saved{border-color:color-mix(in srgb,var(--good) 64%,var(--line));color:color-mix(in srgb,var(--good) 84%,var(--ink));background:color-mix(in srgb,var(--good) 14%,var(--surface));animation:vocab-save-pulse .36s ease-out}.lookup-actions .vocab-save-btn.error{border-color:color-mix(in srgb,var(--bad) 60%,var(--line));color:color-mix(in srgb,var(--bad) 84%,var(--ink));background:color-mix(in srgb,var(--bad) 12%,var(--surface))}.lookup-save-status{margin:8px 0 0!important;font-size:.78rem;font-weight:700}.lookup-save-status.idle{color:var(--muted)}.lookup-save-status.saved{color:color-mix(in srgb,var(--good) 82%,var(--ink))}.lookup-save-status.error{color:color-mix(in srgb,var(--bad) 84%,var(--ink))}.badge-toast{margin-top:10px!important;color:#8a4600;font-weight:600}.feed-cta{margin:18px 0 12px;display:flex;justify-content:center}.explore-controls{display:grid;grid-template-columns:minmax(220px,1.8fr) repeat(3,minmax(130px,1fr)) auto;gap:10px;align-items:center;margin-bottom:12px}.explore-controls input,.explore-controls select,.auth-card input,.setting-block select{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 12px;background:#fff;font-family:inherit}.setting-block{margin-top:10px}.setting-block label{display:block;font-size:.82rem;color:var(--muted);margin-bottom:6px}.toggle-row{display:flex;align-items:center;gap:8px;margin-top:10px;font-size:.88rem}.toggle-row input{accent-color:var(--accent)}.section-choice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px 8px;margin-top:6px}.tiny-check{display:flex;align-items:center;gap:6px;font-size:.75rem}.tiny-check input{accent-color:var(--accent)}.topic-row{display:flex;overflow-x:auto;gap:8px;padding-bottom:6px;margin-bottom:12px;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch}.topic-chip{border:1px solid var(--line);border-radius:999px;background:#fff;padding:8px 12px;white-space:nowrap;cursor:pointer;font-size:.86rem;scroll-snap-align:start}.topic-chip.active{background:var(--accent-soft);color:var(--accent);border-color:transparent}.explore-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.explore-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:12px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}.explore-card-link{text-decoration:none}.explore-card:hover{transform:translateY(-2px);border-color:#bfbfbf;box-shadow:0 16px 26px -22px #11111180}.explore-card h3{margin:0 0 8px;font-size:.98rem;line-height:1.37;display:-webkit-box;-webkit-line-clamp:3;line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.explore-card p{margin:0;color:var(--muted);font-size:.84rem}.explore-topic{margin-bottom:8px!important;color:var(--accent)!important;font-weight:700}.category-browser{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:12px}.category-browser select{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 12px;background:#fff;font-family:inherit}.source-links-wrap{margin-bottom:12px}.source-links-title{margin:0 0 8px;font-size:.8rem;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.04em}.source-links-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch}.source-link-chip{min-width:180px;max-width:280px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:8px 10px;font-size:.8rem;text-decoration:none;display:grid;gap:4px;scroll-snap-align:start}.source-link-chip:hover{border-color:#b4b4b4;background:#fdfdfd}.source-link-host{color:var(--muted);font-size:.74rem;text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.section-header h2{margin:0;font-family:Outfit,sans-serif}.section-header p{margin-top:8px;color:var(--muted)}.notification-list{display:grid;gap:10px}.notify-card{background:var(--surface);border-radius:14px;border:1px solid var(--line);padding:12px}.notify-card.unread{border-color:#ffc8b7;background:#fff7f3}.notify-title{margin:0 0 8px;font-weight:700}.notify-meta{margin-top:10px;color:var(--muted);font-size:.8rem}.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:12px}.stat-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px}.stat-card p{margin:0;color:var(--muted)}.stat-card h3{margin:8px 0 0;font-family:Outfit,sans-serif}.panel{margin-top:14px;border:1px solid var(--line);border-radius:16px;background:var(--surface);padding:12px}.panel h3{margin:0 0 10px;font-family:Outfit,sans-serif}.badge-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.badge-card{border:1px solid var(--line);border-radius:12px;padding:10px;background:#fff}.badge-card p{margin:0;font-weight:700}.badge-card span{margin-top:6px;display:block;color:var(--muted);font-size:.86rem}.leaderboard{display:grid;gap:8px}.leader-row{border:1px solid var(--line);border-radius:12px;padding:10px;display:flex;justify-content:space-between;gap:10px}.leader-row p{margin:0}.section-impact-grid{margin-top:10px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.impact-card{border:1px solid var(--line);border-radius:12px;padding:10px;background:#fff}.impact-card p{margin:4px 0;font-size:.84rem}.impact-title{font-weight:700;font-size:.92rem!important}.impact-bar-track{margin-top:8px;width:100%;height:8px;background:#ececec;border-radius:999px;overflow:hidden}.impact-bar-fill{height:100%;background:#2f7df6}.topic-impact-list{display:grid;gap:8px}.topic-impact-row{border:1px solid var(--line);border-radius:10px;padding:8px 10px;display:flex;justify-content:space-between;gap:8px}.topic-impact-row p{margin:0;font-size:.84rem}.vocab-toolbar{display:grid;gap:8px}.vocab-toolbar-group{margin-left:auto;display:inline-flex;align-items:center;justify-content:flex-end;gap:8px;max-width:100%}.vocab-toolbar-btn{-webkit-appearance:none;appearance:none;border:1px solid var(--line);border-radius:999px;min-height:36px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;gap:6px;white-space:nowrap;cursor:pointer;font-family:inherit;font-size:.76rem;font-weight:800;letter-spacing:.01em;color:var(--ink);background:color-mix(in srgb,var(--surface-soft) 70%,var(--surface));transition:border-color .18s ease,background-color .18s ease,color .18s ease,transform .18s ease}.vocab-toolbar-btn.primary{border-color:color-mix(in srgb,var(--accent) 62%,var(--line));color:color-mix(in srgb,var(--accent) 84%,var(--ink));background:color-mix(in srgb,var(--accent) 14%,var(--surface))}.vocab-table{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:color-mix(in srgb,var(--surface-soft) 65%,var(--surface))}.vocab-table-head,.vocab-table-row{display:grid;grid-template-columns:44px minmax(0,1fr) minmax(0,1fr) auto;gap:8px;align-items:center;padding:9px 10px}.vocab-table-head{border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--surface) 82%,var(--surface-soft))}.vocab-table-head p{margin:0;font-size:.72rem;font-weight:800;letter-spacing:.02em;text-transform:uppercase;color:var(--muted)}.vocab-table-body{display:grid}.vocab-table-row{border-bottom:1px solid color-mix(in srgb,var(--line) 76%,transparent)}.vocab-table-row:last-child{border-bottom:none}.vocab-serial,.vocab-word,.vocab-translation{margin:0}.vocab-serial{font-size:.79rem;font-weight:800;color:color-mix(in srgb,var(--accent) 82%,var(--ink))}.vocab-word{min-width:0;font-size:.9rem;color:var(--ink);word-break:break-word}.vocab-translation{min-width:0;font-size:.84rem;color:color-mix(in srgb,var(--ink) 86%,var(--muted));word-break:break-word}.vocab-row-actions{display:inline-flex;align-items:center;gap:6px}.vocab-icon-btn{width:32px;height:32px;min-width:32px;border-radius:8px}.vocab-remove-btn{color:color-mix(in srgb,var(--bad) 80%,var(--ink))}@media(max-width:920px){.vocab-toolbar-group{width:100%;display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.vocab-toolbar-btn{min-height:34px;padding:0 10px;font-size:.72rem}.vocab-table-head,.vocab-table-row{grid-template-columns:36px minmax(0,1fr) minmax(0,1fr) auto;gap:6px;padding:8px}.vocab-icon-btn{width:30px;height:30px;min-width:30px}}.family-pill{display:inline-block;margin-left:6px;padding:2px 8px;border-radius:999px;font-size:.72rem;font-weight:700}.family-eli5{background:#fff6cc;border-color:#f2d66b}.family-memory{background:#ffe0d4;border-color:#efb19a}.family-wrong{background:#ffe2e2;border-color:#efb0b0}.family-correct{background:#ddf4e7;border-color:#98d9b2}.family-background{background:#e7ebff;border-color:#a7b1ea}.family-exp{background:#e8f3ff;border-color:#a8c9f2}.family-other{background:#efefef;border-color:#d0d0d0}.auth-page{min-height:100vh;display:grid;place-items:center;padding:20px}.auth-card{width:min(420px,100%);border:1px solid var(--line);border-radius:22px;background:var(--surface);padding:24px;box-shadow:var(--shadow)}.auth-card h1{margin:0;font-family:Outfit,sans-serif}.auth-card p{margin:8px 0 18px;color:var(--muted)}.auth-card form{display:grid;gap:10px}.auth-card label{display:grid;gap:7px;font-weight:600}.link-btn{margin-top:10px;background:transparent!important;color:var(--accent)!important;border:0;padding:0!important;text-align:left}.error-msg{margin:0;color:var(--bad);font-weight:600;font-size:.92rem}.muted{color:var(--muted)}.mobile-nav{display:none}.flashcard-wrap{display:grid;gap:10px}.flashcard{border:1px solid var(--line);border-radius:18px;background:#fff;min-height:260px;padding:18px;box-shadow:var(--shadow);overflow:hidden}.flashcard-tag{margin:0 0 8px;display:inline-block;font-size:.78rem;background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:4px 10px;font-weight:700}.flashcard h3{margin:0 0 8px;font-family:Outfit,sans-serif}.flashcard-back{display:grid;gap:10px}.flashcard-detail-list{max-height:55vh;overflow-y:auto;display:grid;gap:8px;padding-right:4px}.flashcard-detail-block{border:1px solid var(--line);border-radius:12px;background:#fafafa;padding:10px}.flashcard-detail-code{margin:0 0 6px!important;font-weight:700;color:#7a3f14}.flashcard-detail-cta{display:flex;justify-content:space-between;align-items:center;gap:10px}.flashcard-meta{display:grid;gap:2px;font-size:.78rem;color:var(--muted)}.flashcard-actions{display:flex;gap:8px}.flashcard-actions button{-webkit-appearance:none;appearance:none;-webkit-tap-highlight-color:transparent;border:1px solid color-mix(in srgb,var(--line) 84%,transparent);border-radius:10px;background:color-mix(in srgb,var(--surface-soft) 72%,var(--surface));color:var(--ink);padding:9px 12px;cursor:pointer;transition:border-color .18s ease,background-color .18s ease,color .18s ease,transform .18s ease}.flashcard-actions button:hover:not(:disabled){border-color:color-mix(in srgb,var(--accent) 66%,var(--line));background:color-mix(in srgb,var(--accent) 14%,var(--surface))}.flashcard-actions button:active:not(:disabled){border-color:color-mix(in srgb,var(--accent) 74%,var(--line));background:color-mix(in srgb,var(--accent) 22%,var(--surface))}.flashcard-actions button:disabled{border-color:color-mix(in srgb,var(--line) 76%,transparent);color:color-mix(in srgb,var(--muted) 82%,var(--ink));background:color-mix(in srgb,var(--surface-soft) 66%,var(--surface));opacity:.72;cursor:not-allowed}@media(max-width:1220px){.app-shell{grid-template-columns:220px minmax(0,1fr)}.right-panel{display:none}.mobile-right-panel{display:block}}@media(max-width:920px){.app-shell{grid-template-columns:1fr;padding:16px 14px 90px}.sidebar{display:none}.feed-panel{max-width:100%}.mobile-right-panel{order:-1;margin-bottom:8px}.mobile-nav{position:fixed;left:0;right:0;bottom:0;background:#fffffff0;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(7,minmax(0,1fr));padding:8px 10px calc(8px + env(safe-area-inset-bottom));-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:100}.mobile-item{text-align:center;text-decoration:none;color:#555;font-size:.82rem;font-weight:600;padding:6px 0;border-radius:8px}.mobile-item.active{color:var(--accent);background:var(--accent-soft)}.explore-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.explore-controls,.category-browser{grid-template-columns:1fr}.source-link-chip{min-width:75vw}.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.badge-grid,.section-impact-grid{grid-template-columns:1fr}.leader-row{flex-direction:column}}:root{--bg: #f3f7ff;--surface: #ffffff;--ink: #0f1f33;--muted: #5a6b85;--line: #d9e3f2;--accent: #0b63e6;--accent-soft: #e9f1ff;--good: #168a56;--bad: #c53d3d;--shadow: 0 20px 45px -30px rgba(13, 32, 68, .35)}body{font-family:Manrope,Segoe UI,sans-serif;line-height:1.55;background:radial-gradient(900px 520px at -12% -10%,rgba(11,99,230,.13),transparent 55%),radial-gradient(780px 420px at 110% 14%,rgba(255,115,67,.14),transparent 52%),linear-gradient(180deg,#f7faff,#eef3fb)}h1,h2,h3,h4,.brand-wrap h1,.post-body h2,.insight-card h3,.insight-card h4,.section-header h2,.auth-card h1,.flashcard h3,.panel h3{font-family:Sora,Manrope,sans-serif;letter-spacing:-.01em}a{text-decoration-thickness:1px;text-underline-offset:2px}button,input,select,textarea{font-family:inherit}button,.nav-item,.mobile-item,.option-pill,.topic-chip,.story-pill,.exp-tab{min-height:44px}:focus-visible{outline:3px solid rgba(11,99,230,.28);outline-offset:2px}.app-shell{max-width:1500px;gap:26px;padding:24px 24px 98px}.sidebar{border:1px solid #d8e2f1;background:linear-gradient(180deg,#fffffff5,#f4f9fff0);border-radius:26px}.brand-badge{border-radius:16px;box-shadow:0 12px 20px -12px #0b63e6b3;background:linear-gradient(135deg,#0b63e6,#ff7a45)}.nav-item{border:1px solid transparent;transition:background-color .2s ease,border-color .2s ease,transform .2s ease}.nav-item:hover{background:#f6f9ff;border-color:#d6e3fa;transform:translate(2px)}.nav-item.active{background:linear-gradient(135deg,#e9f1ff,#e2ecff);border-color:#cadcff}.profile-card button,.feed-cta button,.post-actions button,.explore-controls button,.insight-card button,.auth-card button{border-radius:12px;background:linear-gradient(135deg,#0b63e6,#0955c5);box-shadow:0 14px 24px -18px #0b63e6d9}.insight-card,.mcq-post,.explore-card,.notify-card,.stat-card,.panel,.auth-card,.flashcard{border:1px solid #d8e2f0;border-radius:20px;box-shadow:0 20px 38px -30px #0f1f406b}.insight-card{background:linear-gradient(180deg,#fffffffa,#f6fafffa)}.stories-strip{gap:12px;margin-bottom:20px}.story-pill{border:1px solid #d7e2f3;background:linear-gradient(180deg,#fff,#f3f8ff);border-radius:999px;font-weight:700;color:#17406f;transition:transform .22s ease,border-color .22s ease}.story-pill:hover{transform:translateY(-1px);border-color:#bad1f8}.mcq-post{border-radius:22px;background:linear-gradient(180deg,#fff,#fbfdff)}.post-header{background:linear-gradient(180deg,#fff,#f8fbff)}.avatar{background:linear-gradient(145deg,#eff5ff,#dfe9fb);color:#17406f}.icon-btn{width:38px;height:38px;border-color:#d4e0f2;transition:transform .2s ease,border-color .2s ease,background-color .2s ease}.icon-btn:hover{transform:translateY(-1px);border-color:#b8ccee;background:#f5f9ff}.revision-btn:disabled{opacity:.78;cursor:wait}.revision-btn.saved{color:#8a4f00;border-color:#efc778;background:linear-gradient(180deg,#fff7e8,#ffefcf)}.revision-btn.saved:hover{border-color:#e8bb62;background:linear-gradient(180deg,#fff4e0,#ffe8bf)}.pdf-btn{width:auto;min-width:54px;padding:0 12px;font-size:.72rem;font-weight:800;letter-spacing:.03em}.pdf-btn:disabled{opacity:.75}.option-list{gap:10px}.option-pill{border:1px solid #d5e1f3;border-radius:14px;background:linear-gradient(180deg,#fff,#fbfdff);transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease,background-color .2s ease}.option-pill:hover{border-color:#b8cdf1;transform:translateY(-1px);box-shadow:0 14px 20px -18px #1234628c}.option-pill.selected{border-color:#a4c1f4;background:#eff5ff}.option-pill.correct{border-color:#168a5673;background:#168a561c}.option-pill.incorrect{border-color:#c53d3d70;background:#c53d3d1a}.answer-feedback{border-radius:14px}.explanation-block{border-radius:14px;border-color:#d7e2f2;background:linear-gradient(180deg,#f9fbff,#f3f7ff);max-height:320px}.suggestion-reason{color:#2f4d73}.explanation-tabs{gap:8px;padding-bottom:6px}.exp-tab{border-color:#cfdcf1;font-weight:700;color:#2d4668;background:#fff;transition:background-color .2s ease,border-color .2s ease,color .2s ease,transform .2s ease}.exp-tab:hover{border-color:#b4c9ec;color:#174f9a;transform:translateY(-1px)}.exp-tab.active{background:linear-gradient(180deg,#e9f1ff,#dfebff);border-color:#bfd4fa;color:#0b63e6}.rich-markdown{color:#213a5a}.rich-markdown .inline-link{color:#0b63e6}.ellipsis-pill{border-color:#cfdcf1;background:linear-gradient(180deg,#fff,#f3f8ff)}.feed-cta{margin:20px 0 12px}.feed-cta button{min-width:180px;border-radius:999px;padding:12px 22px;font-weight:800}.feed-cta button:disabled{opacity:.74}.explore-controls input,.explore-controls select,.auth-card input,.setting-block select,.category-browser select{min-height:46px;border-radius:12px;border-color:#d2deef;background:#fff}.explore-card{transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}.explore-card:hover{transform:translateY(-3px);border-color:#b7ccf0;box-shadow:0 18px 28px -20px #0d2d5c80}.source-link-chip{border-color:#d3dff1;background:linear-gradient(180deg,#fff,#f5f9ff)}.mobile-nav{border-top:1px solid #d2ddef;background:#f8fbffeb}.mobile-item{border-radius:10px;min-height:44px;display:grid;align-items:center}.mobile-item.active{background:linear-gradient(180deg,#e7f0ff,#ddeaff);color:#0b63e6}.flashcard{border-radius:22px;background:linear-gradient(180deg,#fff,#f9fcff)}.flashcard-detail-block,.badge-card,.leader-row,.topic-impact-row,.impact-card{border-color:#d5e0f2}.loading-screen{color:#3f5d84}.reveal{animation:rise .45s cubic-bezier(.2,.8,.2,1) both}@keyframes rise{0%{transform:translateY(10px) scale(.995);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}@media(max-width:920px){.app-shell{padding:14px 12px 94px;gap:14px}.stories-strip{margin-bottom:12px}.story-pill{font-size:.8rem;padding:10px 12px}.mcq-post,.insight-card,.panel,.notify-card,.auth-card,.flashcard,.explore-card,.stat-card{border-radius:16px}.post-header,.post-body,.post-footer{padding-left:12px;padding-right:12px}.post-body h2{font-size:1rem;line-height:1.45}.option-pill{padding:12px}.exp-tab{padding:7px 12px;font-size:.76rem}.feed-cta{position:sticky;bottom:calc(72px + env(safe-area-inset-bottom));z-index:9;pointer-events:none}.feed-cta button{width:100%;max-width:420px;pointer-events:auto;box-shadow:0 16px 26px -18px #0b63e6cc}.mobile-nav{grid-template-columns:repeat(7,minmax(0,1fr))}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}.app-shell{grid-template-columns:minmax(228px,256px) minmax(0,760px) minmax(292px,340px);justify-content:center;align-items:start;gap:28px;padding:28px 24px 108px}.sidebar{top:18px;padding:18px}.brand-kicker{margin:0 0 10px;font-size:.72rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#3f5f88}.brand-wordmark h1{font-size:1.16rem}.brand-wordmark p{margin-top:4px;font-size:.78rem;line-height:1.35;color:#567197}.nav-menu{gap:10px}.nav-item{padding:12px 13px;border-radius:13px;line-height:1.2}.profile-card{margin-top:20px;border-top:0;border:1px solid #cfdef3;border-radius:16px;padding:12px;background:linear-gradient(180deg,#fff,#f5f9ff)}.profile-name{font-size:.95rem}.profile-sub{font-size:.78rem;margin-bottom:10px}.profile-kpis{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-bottom:12px}.profile-kpi{border:1px solid #d4e0f2;border-radius:10px;background:#fff;padding:6px 4px;text-align:center}.profile-kpi span{display:block;font-size:.64rem;text-transform:uppercase;letter-spacing:.05em;color:#6a7d98}.profile-kpi strong{display:block;margin-top:2px;font-size:.84rem;color:#173f70}.feed-panel{max-width:none}.feed-panel-inner{display:grid;gap:18px}.right-panel{top:18px}.right-panel-inner{display:grid;gap:14px}.insight-card{padding:18px}.insight-card p{line-height:1.6}.section-header h2{font-size:clamp(1.2rem,1.04rem + .4vw,1.45rem)}.section-header p{max-width:68ch;line-height:1.62}.feed-list{gap:20px}.feed-parent-filter{border:1px solid #d4e0f2;border-radius:14px;padding:12px;background:linear-gradient(180deg,#fff,#f5f9ff);display:grid;gap:8px}.feed-parent-filter label{font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:#5a769e;font-weight:800}.feed-parent-filter select{min-height:44px;border:1px solid #cfdcf2;border-radius:10px;padding:9px 12px;font-family:inherit;font-weight:600;color:#24476f;background:#fff}.feed-item-wrap{display:grid}.feed-load-trigger{width:100%;height:1px;pointer-events:none}.feed-parent-filter-desktop{display:grid}.feed-parent-mobile-trigger,.feed-parent-popup-backdrop,.feed-parent-popup{display:none}.feed-parent-popup-note{margin:0;font-size:.77rem;color:#5a7598}.mcq-post{border-radius:24px}.post-header,.post-body,.post-footer{padding-left:18px;padding-right:18px}.post-topic{line-height:1.2}.post-meta{font-size:.79rem;line-height:1.35}.post-body h2{font-size:clamp(1.02rem,.94rem + .38vw,1.24rem);line-height:1.52;max-width:44ch}.option-pill{align-items:flex-start;padding:12px 13px}.option-pill span:last-child{line-height:1.5}.answer-feedback{font-size:.95rem}.answer-feedback p{line-height:1.5}.answer-feedback-head{gap:8px}.answer-feedback-actions .icon-btn{width:32px;height:32px}.explanation-block{padding:14px;max-height:min(52vh,420px)}.explanation-tabs{margin-bottom:12px}.exp-tab{padding:8px 12px;font-size:.79rem}.rich-markdown{font-size:.96rem;line-height:1.72;max-width:70ch}.rich-markdown p{margin-bottom:10px}.exp-codes{font-size:.78rem;letter-spacing:.01em}.explore-controls{grid-template-columns:minmax(260px,1.95fr) repeat(3,minmax(150px,1fr)) auto;gap:12px}.explore-grid{gap:14px}.explore-card{padding:14px}.notify-card,.panel,.stat-card,.impact-card,.topic-impact-row,.leader-row,.badge-card{border-radius:14px}.panel{padding:14px}.stat-grid{gap:14px}.review-controls{display:grid;grid-template-columns:minmax(160px,220px) 1fr auto;gap:10px;align-items:end}.review-controls label{display:block;font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:#5b7598;font-weight:800}.review-controls select{min-height:44px;border:1px solid #cedcf2;border-radius:10px;padding:10px 12px;font-family:inherit}.review-result-list{display:grid;gap:10px}.review-result-card{border:1px solid #d4e0f2;border-radius:12px;background:#fff;padding:11px 12px}.review-result-card.passed{border-color:#168a564d;background:#168a560d}.review-result-card.failed{border-color:#c53d3d4d;background:#c53d3d0d}.review-result-title{margin:0 0 6px;font-weight:700;line-height:1.45}.review-result-meta{margin:0;font-size:.82rem;color:var(--muted)}.review-result-actions{margin-top:10px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.review-result-actions a,.review-result-actions button{border:1px solid #cbdaf1;background:#fff;color:#1f4a78;border-radius:999px;padding:6px 10px;text-decoration:none;font-size:.78rem;font-weight:700;cursor:pointer}.review-action-btn{min-width:92px;min-height:32px;display:inline-flex;align-items:center;justify-content:center;text-align:center}.review-day-meta{display:grid;gap:4px;min-width:0}.review-day-actions{display:inline-flex;gap:6px;flex-wrap:wrap}.review-day-actions button{border:1px solid #cbdaf1;background:#fff;color:#1f4a78;border-radius:999px;padding:6px 10px;min-height:32px;min-width:96px;font-size:.76rem;font-weight:700;cursor:pointer}.review-day-actions button:disabled{opacity:.74;cursor:not-allowed}.status-pill{border-radius:999px;min-width:92px;min-height:32px;padding:0 10px;display:inline-flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:800;letter-spacing:.02em}.status-pill.pass{background:#168a561f;color:#0f6a42;border:1px solid rgba(22,138,86,.35)}.status-pill.fail{background:#c53d3d1f;color:#983131;border:1px solid rgba(197,61,61,.35)}.mobile-right-panel{display:none}.mobile-insight-toggle{width:100%;border:1px solid #cddbf1;border-radius:12px;background:linear-gradient(180deg,#fff,#edf4ff);color:#194674;padding:10px 12px;display:flex;justify-content:space-between;align-items:center;font-weight:800;font-size:.82rem;letter-spacing:.01em;cursor:pointer}.mobile-insight-content{margin-top:8px;display:grid;gap:10px;max-height:0;overflow:hidden;opacity:0;transform:translateY(-3px);transition:max-height .28s ease,opacity .2s ease,transform .2s ease}.mobile-insight-content.open{max-height:1400px;opacity:1;transform:translateY(0)}@media(max-width:1280px){.app-shell{grid-template-columns:minmax(220px,244px) minmax(0,1fr) minmax(284px,320px);gap:22px}}@media(max-width:1220px){.app-shell{grid-template-columns:minmax(214px,236px) minmax(0,1fr);max-width:1180px}.right-panel{display:none}.mobile-right-panel{display:block;order:-1;margin-bottom:8px}}@media(max-width:920px){.app-shell{grid-template-columns:1fr;padding:12px 10px 98px;gap:12px}.feed-panel-inner{gap:14px}.stories-strip{margin-bottom:10px}.story-pill{font-size:.78rem;padding:10px 12px}.post-header,.post-body,.post-footer{padding-left:12px;padding-right:12px}.post-body h2{max-width:none;font-size:1rem;line-height:1.5}.option-pill{padding:12px}.rich-markdown{max-width:none;font-size:.95rem;line-height:1.66}.explanation-block{max-height:min(56vh,440px)}.feed-cta{margin-top:4px}.review-controls{grid-template-columns:1fr;align-items:stretch}.review-day-actions{width:100%}.review-day-actions button{flex:1 1 140px}.feed-cta button{width:100%;max-width:440px;min-height:46px}.answer-feedback-head{align-items:center}.mobile-nav{border-top:1px solid #cad8ee;box-shadow:0 -14px 28px -22px #092c5f73}.mobile-item{font-size:.79rem;font-weight:700;line-height:1.2}.mobile-insight-toggle{min-height:44px}}.explore-filter-shell{display:grid;gap:12px}.explore-filter-toggle{display:none}.explore-filter-content{display:grid;gap:12px}.feed-cta button{border:1px solid rgba(255,255,255,.68);color:#143d6c;background:linear-gradient(130deg,#ffffffc2,#e6f1ff9e);backdrop-filter:blur(16px) saturate(165%);-webkit-backdrop-filter:blur(16px) saturate(165%);box-shadow:0 16px 28px -22px #08397894,inset 0 1px #ffffffb8;transition:transform .2s ease,box-shadow .24s ease,border-color .24s ease,background-color .24s ease}.feed-cta button:hover:not(:disabled){transform:translateY(-1px);border-color:#abcef9f2;box-shadow:0 20px 30px -22px #083978a8,inset 0 1px #ffffffd6}.feed-cta button:disabled{color:#486b97;border-color:#cedff7f2;background:linear-gradient(130deg,#ffffffa8,#ebf4ffb3)}.mobile-profile-actions{display:none}.mobile-profile-logout{border:1px solid rgba(205,219,239,.95);border-radius:999px;background:#fff;color:#194675;min-height:40px;padding:8px 16px;font-weight:800;cursor:pointer}@media(min-width:921px){.explore-filter-content{opacity:1!important;max-height:none!important;overflow:visible!important;transform:none!important}}@media(max-width:920px){.explore-filter-shell{border:1px solid #d4e0f2;border-radius:14px;background:linear-gradient(180deg,#fff,#f4f9ff);padding:10px}.explore-filter-toggle{display:flex;justify-content:space-between;align-items:center;width:100%;min-height:44px;border:1px solid #cad8ef;border-radius:11px;padding:8px 12px;background:linear-gradient(130deg,#ffffffeb,#e2efffb3);color:#194776;font-size:.81rem;font-weight:800;letter-spacing:.02em;cursor:pointer}.explore-filter-content{max-height:0;opacity:0;overflow:hidden;transform:translateY(-3px);transition:max-height .3s ease,opacity .2s ease,transform .2s ease}.explore-filter-content.open{max-height:1200px;opacity:1;transform:translateY(0)}.explore-controls{grid-template-columns:1fr;gap:10px;margin-bottom:10px}.category-browser{grid-template-columns:1fr;gap:10px;margin-bottom:0}.explore-grid{grid-template-columns:1fr;gap:10px}.explore-card{padding:12px}.explore-card h3{-webkit-line-clamp:4;line-clamp:4;font-size:.95rem}.mobile-nav{grid-template-columns:repeat(7,minmax(0,1fr));border-top:1px solid rgba(208,223,245,.92);background:linear-gradient(180deg,#fbfeffdb,#edf5ffcc);backdrop-filter:blur(18px) saturate(185%);-webkit-backdrop-filter:blur(18px) saturate(185%);box-shadow:0 -16px 28px -24px #0a2e6285,inset 0 1px #fffc;padding:7px 8px calc(8px + env(safe-area-inset-bottom));gap:4px}.mobile-item{min-height:40px;border-radius:9px;border:1px solid transparent;color:#3b5d86;font-size:.72rem;font-weight:800;line-height:1;display:flex;align-items:center;justify-content:center;text-align:center;white-space:nowrap;transition:border-color .22s ease,background-color .22s ease,color .22s ease,transform .2s ease}.mobile-item.active{border-color:#a5c7f6db;color:#0c5fd5;background:linear-gradient(180deg,#edf6fff5,#e0eefff0);box-shadow:0 8px 16px -14px #0a397acc}.mobile-profile-actions{display:flex;justify-content:flex-end}.feed-parent-filter{border:1px solid rgba(255,255,255,.68);border-radius:999px;padding:8px 12px;background:linear-gradient(130deg,#ffffffc2,#e6f1ff9e);backdrop-filter:blur(16px) saturate(165%);-webkit-backdrop-filter:blur(16px) saturate(165%);display:flex;align-items:center;gap:8px;margin-top:12px;box-shadow:0 16px 28px -22px #08397894,inset 0 1px #ffffffb8}.feed-parent-filter select{border:none;background:transparent;color:#143d6c;font-weight:700;font-size:.73rem;font-family:inherit;cursor:pointer;outline:none}.feed-parent-filter-desktop{display:block}.feed-parent-mobile-trigger{display:none;align-items:center;justify-content:center;width:fit-content;min-height:38px;border:1px solid rgba(255,255,255,.68);border-radius:999px;background:linear-gradient(130deg,#ffffffc2,#e6f1ff9e);backdrop-filter:blur(16px) saturate(165%);-webkit-backdrop-filter:blur(16px) saturate(165%);color:#143d6c;font-size:.74rem;font-weight:800;letter-spacing:.02em;padding:6px 12px;position:fixed;top:8px;right:8px;z-index:20;box-shadow:0 16px 28px -22px #08397894,inset 0 1px #ffffffb8;transition:transform .2s ease,box-shadow .24s ease,border-color .24s ease,background-color .24s ease,display .2s ease}.feed-parent-mobile-trigger.visible{display:inline-flex}.feed-parent-popup-backdrop{display:block;position:fixed;inset:0;background:#0e223c47;opacity:0;pointer-events:none;transition:opacity .2s ease;z-index:140}.feed-parent-popup-backdrop.open{opacity:1;pointer-events:auto}.feed-parent-popup{display:grid;gap:10px;position:fixed;top:8px;left:10px;right:10px;border:1px solid #cad8ee;border-radius:14px;padding:12px;background:linear-gradient(180deg,#fff,#f4f9ff);box-shadow:0 20px 30px -24px #0a2e6099;transform:translateY(-120%);opacity:0;transition:transform .26s ease,opacity .2s ease;z-index:141}.feed-parent-popup.open{transform:translateY(0);opacity:1}.feed-parent-popup-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.feed-parent-popup-head p{margin:0;font-size:.8rem;font-weight:800;letter-spacing:.01em;color:#224d7b}.feed-parent-popup-close{border:1px solid #c8d6ec;border-radius:999px;background:#fff;color:#315c89;min-height:30px;padding:5px 10px;font-size:.74rem;font-weight:700;cursor:pointer}.feed-parent-popup select{min-height:42px;border:1px solid #ccdaf0;border-radius:10px;padding:9px 11px;font-family:inherit;font-weight:600;color:#24476f;background:#fff}}@media(min-width:921px){.feed-parent-mobile-trigger{display:none!important}}@media(max-width:1520px)and (min-width:921px){.explore-controls{grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch}.explore-controls input{grid-column:1 / -1}.explore-controls button{justify-self:start}}.explore-filter-mode{display:flex;gap:10px;flex-wrap:wrap}.explore-mode-btn{border:1px solid #cad8ee;border-radius:999px;min-height:40px;padding:8px 16px;background:#fff;color:#2a537f;font-weight:800;letter-spacing:.01em;cursor:pointer;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}.explore-mode-btn.active{border-color:#78a4da;background:linear-gradient(180deg,#fff,#eaf3ff);box-shadow:0 10px 18px -16px #1640768c}.explore-controls-quick{grid-template-columns:minmax(280px,1.8fr) auto auto}.explore-controls-structured{grid-template-columns:repeat(3,minmax(170px,1fr)) auto auto}.ghost-btn{border:1px solid #c8d8ef;border-radius:12px;background:#fff;color:#3e6187}.explore-item-wrap{display:grid}.explore-load-trigger{width:100%;height:1px;pointer-events:none}@media(max-width:920px){.explore-mode-btn{flex:1 1 0;min-height:42px}.explore-controls-quick,.explore-controls-structured{grid-template-columns:1fr}}.scroll-top-arrow{position:fixed;right:max(8px,env(safe-area-inset-right));bottom:16px;width:24px;height:24px;border:1px solid rgba(255,255,255,.55);border-radius:999px;background:#ffffff42;color:#103760d1;padding:0;display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;line-height:1;cursor:pointer;z-index:80;box-shadow:0 6px 14px -12px #08397859;backdrop-filter:blur(14px) saturate(130%);-webkit-backdrop-filter:blur(14px) saturate(130%);transition:background-color .2s ease,border-color .2s ease,opacity .2s ease;opacity:.78}.scroll-top-arrow:hover{border-color:#ffffffbf;background:#ffffff57;opacity:.95}@media(max-width:920px){.scroll-top-arrow{right:6px;bottom:calc(82px + env(safe-area-inset-bottom));width:22px;height:22px;font-size:11px}}.question-rich-text{margin:0 0 14px;font-family:Outfit,sans-serif;font-size:clamp(1.02rem,.94rem + .38vw,1.24rem);line-height:1.52;max-width:44ch}.question-rich-text p,.question-rich-text ul,.question-rich-text ol,.question-rich-text h1,.question-rich-text h2,.question-rich-text h3,.question-rich-text h4{margin:0 0 8px}.question-rich-text p:last-child,.question-rich-text ul:last-child,.question-rich-text ol:last-child,.question-rich-text h1:last-child,.question-rich-text h2:last-child,.question-rich-text h3:last-child,.question-rich-text h4:last-child{margin-bottom:0}.question-rich-text li{margin-bottom:4px}.question-rich-text strong,.option-rich-text strong,.explore-question-rich strong,.review-question-rich strong,.flashcard-question-rich strong{font-weight:800}.option-rich-text{display:block;line-height:1.5}.option-rich-text p,.option-rich-text ul,.option-rich-text ol,.option-rich-text h1,.option-rich-text h2,.option-rich-text h3,.option-rich-text h4{margin:0}.option-rich-text ul,.option-rich-text ol{padding-left:18px}.explore-question-rich{margin:0 0 8px;font-size:.98rem;line-height:1.37;max-height:4.11em;overflow:hidden}.explore-question-rich p,.explore-question-rich ul,.explore-question-rich ol,.explore-question-rich h1,.explore-question-rich h2,.explore-question-rich h3,.explore-question-rich h4{margin:0}.explore-question-rich ul,.explore-question-rich ol{padding-left:18px}.explore-answer-rich p,.explore-answer-rich ul,.explore-answer-rich ol,.explore-answer-rich h1,.explore-answer-rich h2,.explore-answer-rich h3,.explore-answer-rich h4{margin:0}.explore-answer-rich ul,.explore-answer-rich ol{padding-left:18px}.review-question-rich p,.review-question-rich ul,.review-question-rich ol,.review-question-rich h1,.review-question-rich h2,.review-question-rich h3,.review-question-rich h4{margin:0}.review-question-rich ul,.review-question-rich ol{padding-left:18px}.flashcard-question-rich{margin:0 0 8px;font-family:Outfit,sans-serif}.flashcard-question-rich p,.flashcard-question-rich ul,.flashcard-question-rich ol,.flashcard-question-rich h1,.flashcard-question-rich h2,.flashcard-question-rich h3,.flashcard-question-rich h4{margin:0}.flashcard-question-rich ul,.flashcard-question-rich ol{padding-left:18px}.flashcard-answer-rich p,.flashcard-answer-rich ul,.flashcard-answer-rich ol,.flashcard-answer-rich h1,.flashcard-answer-rich h2,.flashcard-answer-rich h3,.flashcard-answer-rich h4{margin:0 0 8px}.flashcard-answer-rich p:last-child,.flashcard-answer-rich ul:last-child,.flashcard-answer-rich ol:last-child,.flashcard-answer-rich h1:last-child,.flashcard-answer-rich h2:last-child,.flashcard-answer-rich h3:last-child,.flashcard-answer-rich h4:last-child{margin-bottom:0}.flashcard-answer-rich ul,.flashcard-answer-rich ol{padding-left:18px}@media(max-width:920px){.question-rich-text{max-width:none;font-size:1rem;line-height:1.5}.explore-question-rich{font-size:.95rem;max-height:5.6em}}.post-topic{font-size:clamp(.74rem,.7rem + .22vw,.86rem);font-weight:700;letter-spacing:.01em;color:#22466f}.explore-topic{font-size:clamp(.72rem,.69rem + .16vw,.8rem);letter-spacing:.015em}.post-header{position:relative;overflow:hidden;isolation:isolate}.post-header .icon-btn{background:#ffffffe6}.post-header.topic-tone-language{background:linear-gradient(135deg,#2b74b826,#2b74b80a 64%,#fffffffa);border-bottom-color:#3c7db957}.post-header.topic-tone-math{background:linear-gradient(135deg,#10906d29,#10906d0d 64%,#fffffffa);border-bottom-color:#1d866c57}.post-header.topic-tone-reasoning{background:linear-gradient(135deg,#e574142b,#e574140d 64%,#fffffffa);border-bottom-color:#d0722459}.post-header.topic-tone-science{background:linear-gradient(135deg,#7652ad2b,#7652ad0d 64%,#fffffffa);border-bottom-color:#7652ad57}.post-header.topic-tone-general{background:linear-gradient(135deg,#4c76a224,#4c76a20a 64%,#fffffffa);border-bottom-color:#5981aa54}.post-header.topic-tone-language .avatar{background:linear-gradient(145deg,#e7f2ff,#d4e6ff);color:#0f4a7d}.post-header.topic-tone-math .avatar{background:linear-gradient(145deg,#e6f7f2,#d3f0e4);color:#0f6e56}.post-header.topic-tone-reasoning .avatar{background:linear-gradient(145deg,#fff2e4,#ffe4ca);color:#8a4a12}.post-header.topic-tone-science .avatar{background:linear-gradient(145deg,#f1ecfb,#e5dcf9);color:#5f4092}.post-header.topic-tone-general .avatar{background:linear-gradient(145deg,#ecf2fb,#dde8f8);color:#355a84}.post-header.topic-tone-language .icon-btn,.post-header.topic-tone-math .icon-btn,.post-header.topic-tone-reasoning .icon-btn,.post-header.topic-tone-science .icon-btn,.post-header.topic-tone-general .icon-btn{border-color:#7b99bd59}.post-header.topic-tone-language .icon-btn:hover,.post-header.topic-tone-math .icon-btn:hover,.post-header.topic-tone-reasoning .icon-btn:hover,.post-header.topic-tone-science .icon-btn:hover,.post-header.topic-tone-general .icon-btn:hover{background:#fffffffa}.brand-badge{position:relative;width:52px;height:52px;padding:2px;border-radius:18px;display:grid;place-items:center;background:linear-gradient(132deg,#075de2,#1d8cf4 42%,#ff7f3a);box-shadow:0 14px 28px -16px #1052b2d1;overflow:hidden}.brand-badge:after{content:"";position:absolute;width:76%;height:44%;left:11%;top:5%;border-radius:999px;background:linear-gradient(180deg,#ffffffb3,#ffffff1f);filter:blur(1px);pointer-events:none}.brand-badge-core{position:relative;z-index:1;width:100%;height:100%;border-radius:16px;display:grid;place-items:center;background:radial-gradient(circle at 24% 18%,#ffffff6b,#ffffff0a 38%),linear-gradient(152deg,#05388ef0,#166ddeeb 54%,#ff8846e6);border:1px solid rgba(255,255,255,.5)}.brand-badge-glyph{font-family:Sora,Outfit,sans-serif;font-size:.82rem;font-weight:800;letter-spacing:.08em;color:#fff;text-shadow:0 1px 6px rgba(0,0,0,.32);transform:translate(.02em)}@media(max-width:920px){.brand-badge{width:48px;height:48px;border-radius:16px}.brand-badge-core{border-radius:14px}.brand-badge-glyph{font-size:.78rem}}[data-theme=cosmos]{--bg: #060d1b;--surface: #0f1a2e;--surface-soft: #16253f;--ink: #eff5ff;--muted: #a9bad8;--line: #2b3c5c;--accent: #6dc5ff;--accent-soft: rgba(109, 197, 255, .16);--good: #54d28b;--bad: #ff8383;--shadow: 0 20px 40px -26px rgba(0, 0, 0, .82)}[data-theme=midnight]{--bg: #06060a;--surface: #111116;--surface-soft: #1a1a24;--ink: #f5f5fb;--muted: #aeaec3;--line: #2b2b37;--accent: #a2b6ff;--accent-soft: rgba(162, 182, 255, .15);--good: #66d1a1;--bad: #ffa0a0;--shadow: 0 20px 40px -24px rgba(0, 0, 0, .88)}[data-theme=daylight]{--bg: #f2f6ff;--surface: #ffffff;--surface-soft: #f5f8ff;--ink: #101a2f;--muted: #5f6d8c;--line: #d2dff8;--accent: #256ad8;--accent-soft: rgba(37, 106, 216, .14);--good: #198754;--bad: #d64545;--shadow: 0 18px 30px -24px rgba(9, 30, 70, .4)}html[data-theme] body{color:var(--ink);background:radial-gradient(circle at 16% -18%,color-mix(in srgb,var(--accent) 20%,transparent) 0%,transparent 42%),radial-gradient(circle at 92% 0%,color-mix(in srgb,var(--surface-soft) 80%,transparent) 0%,transparent 36%),var(--bg);transition:background .35s ease,color .22s ease}html[data-theme] .sidebar,html[data-theme] .insight-card,html[data-theme] .mcq-post,html[data-theme] .flashcard,html[data-theme] .stat-card,html[data-theme] .panel,html[data-theme] .notify-card,html[data-theme] .explore-card,html[data-theme] .auth-card,html[data-theme] .topic-chip,html[data-theme] .story-pill{background:linear-gradient(180deg,var(--surface) 0%,color-mix(in srgb,var(--surface-soft) 65%,var(--surface)) 100%);border-color:var(--line);color:var(--ink);box-shadow:var(--shadow)}html[data-theme] .post-header,html[data-theme] .post-footer,html[data-theme] .option-pill,html[data-theme] .icon-btn,html[data-theme] .source-link-chip,html[data-theme] .badge-card,html[data-theme] .impact-card,html[data-theme] .leader-row,html[data-theme] .topic-impact-row{background:color-mix(in srgb,var(--surface-soft) 72%,var(--surface));border-color:var(--line);color:var(--ink)}html[data-theme] .muted{color:var(--muted)}html[data-theme] .mobile-nav{background:color-mix(in srgb,var(--surface) 88%,transparent);border-top-color:var(--line)}html[data-theme] .mobile-item{color:var(--muted)}html[data-theme] .mobile-item.active{color:var(--accent);background:var(--accent-soft)}.feed-panel-inner{display:grid;gap:16px}.top-nav-shell{position:sticky;top:10px;z-index:30;display:grid;gap:10px;padding:10px;border-radius:16px;border:1px solid var(--line);background:color-mix(in srgb,var(--surface) 90%,transparent);backdrop-filter:blur(16px) saturate(160%);-webkit-backdrop-filter:blur(16px) saturate(160%);box-shadow:var(--shadow)}.top-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;padding-bottom:4px}.top-nav-item{text-decoration:none;border:1px solid var(--line);color:var(--muted);background:color-mix(in srgb,var(--surface-soft) 78%,transparent);border-radius:999px;padding:7px 12px;font-size:.78rem;font-weight:700;white-space:nowrap;transition:border-color .2s ease,color .2s ease,background-color .2s ease,transform .2s ease}.top-nav-item:hover{transform:translateY(-1px);border-color:color-mix(in srgb,var(--accent) 60%,var(--line));color:var(--ink)}.top-nav-item.active{border-color:color-mix(in srgb,var(--accent) 70%,var(--line));color:var(--accent);background:var(--accent-soft)}.top-nav-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between}.theme-switcher{display:flex;align-items:center;gap:6px}.theme-chip{border:1px solid var(--line);border-radius:999px;min-height:32px;padding:6px 11px;background:color-mix(in srgb,var(--surface-soft) 80%,transparent);color:var(--muted);font-weight:700;font-size:.73rem;cursor:pointer}.theme-chip.active{border-color:color-mix(in srgb,var(--accent) 70%,var(--line));background:var(--accent-soft);color:var(--accent)}.top-profile-chip{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:999px;padding:5px 11px 5px 5px;background:color-mix(in srgb,var(--surface-soft) 80%,transparent);color:var(--ink);cursor:pointer}.top-profile-avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-size:.72rem;font-weight:800;color:#fff;background:linear-gradient(140deg,var(--accent) 0%,color-mix(in srgb,var(--accent) 45%,#ff9f66) 100%)}.top-profile-copy{display:grid;line-height:1.15;text-align:left}.top-profile-copy strong{font-size:.75rem}.top-profile-copy span{font-size:.68rem;color:var(--muted)}.top-logout-btn{border:1px solid color-mix(in srgb,var(--bad) 45%,var(--line));border-radius:999px;min-height:32px;padding:6px 12px;font-weight:700;color:color-mix(in srgb,var(--bad) 75%,var(--ink));background:color-mix(in srgb,var(--bad) 10%,var(--surface));cursor:pointer}.revision-btn.saved{box-shadow:0 0 0 2px color-mix(in srgb,#ffcc74 30%,transparent)}.mcq-post,.flashcard,.exam-card{touch-action:pan-y}.exam-setup,.exam-session,.exam-results{border:1px solid var(--line);border-radius:18px;padding:14px;background:linear-gradient(180deg,var(--surface) 0%,color-mix(in srgb,var(--surface-soft) 80%,var(--surface)) 100%);box-shadow:var(--shadow)}.exam-setup-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.exam-field{display:grid;gap:6px}.exam-field span{font-size:.8rem;color:var(--muted);font-weight:600}.exam-field input,.exam-field select{width:100%;border:1px solid var(--line);border-radius:10px;min-height:42px;padding:10px 12px;font-family:inherit;background:color-mix(in srgb,var(--surface-soft) 72%,var(--surface));color:var(--ink)}.exam-preset-row{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap}.exam-preset-row button,.exam-setup-actions button,.exam-session-actions button,.exam-result-actions button{border:1px solid var(--line);border-radius:12px;min-height:40px;padding:8px 14px;background:color-mix(in srgb,var(--surface-soft) 72%,var(--surface));color:var(--ink);font-weight:700;cursor:pointer}.exam-preset-row button:hover,.exam-setup-actions button:hover,.exam-session-actions button:hover,.exam-result-actions button:hover{border-color:color-mix(in srgb,var(--accent) 52%,var(--line))}.exam-setup-actions{margin-top:12px}.exam-session-head{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}.exam-chip{margin:0 0 5px;font-size:.76rem;border:1px solid var(--line);border-radius:999px;padding:4px 10px;color:var(--muted);display:inline-flex}.exam-session-kpis{text-align:right}.exam-session-kpis p{margin:0 0 4px;font-size:.8rem}.exam-clock.critical{color:var(--bad);font-weight:800}.exam-card{margin-top:10px;border:1px solid var(--line);border-radius:16px;padding:14px;background:color-mix(in srgb,var(--surface-soft) 64%,var(--surface))}.exam-card-topic{margin:0 0 10px;font-size:.76rem;font-weight:700;color:var(--accent);letter-spacing:.02em}.exam-card-question{margin-bottom:12px;font-family:Outfit,sans-serif;font-size:1rem}.exam-options{display:grid;gap:8px}.exam-option{border:1px solid var(--line);border-radius:12px;background:color-mix(in srgb,var(--surface-soft) 70%,var(--surface));color:var(--ink);min-height:44px;padding:9px 10px;display:grid;grid-template-columns:24px minmax(0,1fr);align-items:center;gap:10px;text-align:left;cursor:pointer}.exam-option span{width:24px;height:24px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;font-size:.78rem;font-weight:700}.exam-option.selected{border-color:color-mix(in srgb,var(--accent) 66%,var(--line));background:var(--accent-soft)}.exam-session-actions,.exam-result-actions{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap}.exam-results-head h3{margin:0}.exam-results-head p{margin:6px 0 0;color:var(--muted)}.exam-result-head-grid{margin-top:12px;display:grid;grid-template-columns:220px minmax(0,1fr);gap:10px}.exam-stamp-card,.exam-candidate-card{border:1px solid var(--line);border-radius:12px;padding:10px 12px;background:color-mix(in srgb,var(--surface-soft) 72%,var(--surface))}.exam-stamp-card{display:grid;align-content:center;justify-items:center;text-align:center;border-width:2px;border-style:dashed}.exam-stamp-card.pass{border-color:color-mix(in srgb,var(--good) 70%,var(--line));background:color-mix(in srgb,var(--good) 14%,var(--surface))}.exam-stamp-card.fail{border-color:color-mix(in srgb,var(--bad) 70%,var(--line));background:color-mix(in srgb,var(--bad) 12%,var(--surface))}.exam-stamp-main{margin:0;font-size:2rem;line-height:1;letter-spacing:.12em;font-weight:900;color:color-mix(in srgb,var(--ink) 85%,var(--muted))}.exam-stamp-sub{margin:6px 0 0;font-size:.74rem;font-weight:700;color:var(--muted)}.exam-candidate-card p{margin:0 0 6px;font-size:.84rem;color:var(--ink)}.exam-candidate-card p:last-child{margin-bottom:0}.exam-candidate-card strong{color:var(--muted)}.exam-result-grid{margin-top:12px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.exam-result-card{border:1px solid var(--line);border-radius:12px;padding:10px;background:color-mix(in srgb,var(--surface-soft) 68%,var(--surface))}.exam-result-card p{margin:0;font-size:.78rem;color:var(--muted)}.exam-result-card strong{margin-top:6px;display:block;font-size:.92rem}.exam-feedback-card{margin-top:10px;border:1px solid var(--line);border-radius:12px;padding:12px;background:color-mix(in srgb,var(--surface-soft) 68%,var(--surface))}.exam-feedback-card h4{margin:0 0 8px}.exam-feedback-card p{margin:6px 0}.exam-review-list{display:grid;gap:8px}.exam-review-row{border:1px solid color-mix(in srgb,var(--line) 82%,transparent);border-radius:12px;overflow:hidden;background:color-mix(in srgb,var(--surface-soft) 72%,var(--surface))}.exam-review-trigger{border:0!important;border-radius:0!important;min-height:44px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center}.exam-review-status{border:1px solid var(--line);border-radius:999px;font-size:.69rem;font-weight:800;padding:2px 8px;white-space:nowrap}.exam-review-status.correct{border-color:color-mix(in srgb,var(--good) 64%,var(--line));color:color-mix(in srgb,var(--good) 78%,var(--ink));background:color-mix(in srgb,var(--good) 16%,var(--surface))}.exam-review-status.wrong{border-color:color-mix(in srgb,var(--bad) 64%,var(--line));color:color-mix(in srgb,var(--bad) 80%,var(--ink));background:color-mix(in srgb,var(--bad) 14%,var(--surface))}.exam-review-status.unanswered{border-color:color-mix(in srgb,var(--accent) 64%,var(--line));color:color-mix(in srgb,var(--accent) 80%,var(--ink));background:color-mix(in srgb,var(--accent) 14%,var(--surface))}.exam-review-content{display:grid;gap:10px;padding:0 10px 10px}.exam-review-question{padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:color-mix(in srgb,var(--surface) 88%,var(--surface-soft))}.exam-review-meta{display:grid;gap:4px}.exam-review-meta p{margin:0;font-size:.82rem;color:var(--muted)}.exam-review-options{display:grid;gap:7px}.exam-review-option{border:1px solid var(--line);border-radius:10px;padding:8px 10px;display:grid;grid-template-columns:20px minmax(0,1fr);gap:8px;color:var(--ink);background:color-mix(in srgb,var(--surface-soft) 72%,var(--surface))}.exam-review-option strong{font-size:.78rem}.exam-review-option.selected{border-color:color-mix(in srgb,var(--bad) 66%,var(--line));background:color-mix(in srgb,var(--bad) 10%,var(--surface))}.exam-review-option.correct{border-color:color-mix(in srgb,var(--good) 66%,var(--line));background:color-mix(in srgb,var(--good) 12%,var(--surface))}.exam-explanation-grid{display:grid;gap:8px}.exam-explanation-item{border:1px solid color-mix(in srgb,var(--line) 82%,transparent);border-radius:10px;padding:8px 10px;background:color-mix(in srgb,var(--surface) 86%,var(--surface-soft))}.exam-explanation-code{margin:0 0 6px;font-size:.72rem;font-weight:800;letter-spacing:.03em;color:var(--accent)}.exam-mistake-row{padding:8px 0;border-top:1px solid color-mix(in srgb,var(--line) 76%,transparent)}.exam-mistake-row:first-of-type{border-top:0}.exam-quote{margin-top:10px!important;color:var(--accent);font-weight:700}@media(max-width:1220px){.top-nav-actions{align-items:stretch}}@media(max-width:920px){.top-nav-shell{top:6px;padding:8px;border-radius:12px}.top-nav-actions{flex-direction:column;align-items:stretch}.theme-switcher{justify-content:space-between}.theme-chip{flex:1 1 0;min-height:34px;font-size:.72rem;text-align:center}.top-profile-chip{justify-content:flex-start}.exam-setup-grid,.exam-result-grid,.exam-result-head-grid{grid-template-columns:1fr}.exam-session-head{flex-direction:column}.exam-session-kpis{text-align:left}.exam-session-actions button,.exam-result-actions button,.exam-setup-actions button{width:100%}.mobile-nav{grid-template-columns:repeat(8,minmax(0,1fr))}.mobile-item{font-size:.67rem}}.profile-theme-label{margin:10px 0 6px;font-size:.76rem;color:var(--muted);font-weight:700}.sidebar-theme-switcher{margin-bottom:10px;flex-wrap:wrap}.sidebar-theme-switcher .theme-chip{flex:1 1 0}.mobile-menu-backdrop,.mobile-menu-sheet{display:none}@media(max-width:920px){.mobile-menu-backdrop{display:block;position:fixed;inset:0;background:#060d1b75;opacity:0;pointer-events:none;z-index:220;transition:opacity .22s ease}.mobile-menu-backdrop.open{opacity:1;pointer-events:auto}.mobile-menu-sheet{display:grid;gap:10px;position:fixed;left:10px;right:10px;bottom:calc(70px + env(safe-area-inset-bottom));z-index:221;border:1px solid var(--line);border-radius:16px;padding:12px;background:linear-gradient(180deg,var(--surface) 0%,color-mix(in srgb,var(--surface-soft) 80%,var(--surface)) 100%);box-shadow:var(--shadow);transform:translateY(120%);opacity:0;pointer-events:none;transition:transform .24s ease,opacity .2s ease}.mobile-menu-sheet.open{transform:translateY(0);opacity:1;pointer-events:auto}.mobile-menu-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.mobile-menu-head p{margin:0;font-size:.82rem;font-weight:800}.mobile-menu-head button{border:1px solid var(--line);border-radius:999px;min-height:30px;padding:4px 10px;font-size:.74rem;background:color-mix(in srgb,var(--surface-soft) 72%,var(--surface));color:var(--ink)}.mobile-menu-profile{border:1px solid var(--line);border-radius:12px;padding:9px 10px;display:flex;align-items:center;gap:10px;background:color-mix(in srgb,var(--surface-soft) 72%,var(--surface));color:var(--ink);text-align:left}.mobile-menu-avatar{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:800;background:linear-gradient(140deg,var(--accent) 0%,color-mix(in srgb,var(--accent) 45%,#ff9f66) 100%)}.mobile-menu-copy{display:grid;line-height:1.18}.mobile-menu-copy strong{font-size:.82rem}.mobile-menu-copy span{font-size:.73rem;color:var(--muted)}.mobile-theme-switcher{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.mobile-theme-switcher .theme-chip{min-height:40px;width:100%;text-align:center}.mobile-menu-actions{display:grid;gap:8px}.mobile-menu-link-btn{border:1px solid var(--line);border-radius:12px;min-height:40px;padding:8px 12px;background:color-mix(in srgb,var(--surface-soft) 72%,var(--surface));color:var(--ink);font-weight:700}.mobile-menu-link-btn.danger{border-color:color-mix(in srgb,var(--bad) 45%,var(--line));color:color-mix(in srgb,var(--bad) 75%,var(--ink));background:color-mix(in srgb,var(--bad) 10%,var(--surface))}.mobile-item-menu{border:1px solid transparent;background:color-mix(in srgb,var(--surface-soft) 64%,var(--surface));color:var(--muted);font-family:inherit;font-size:inherit;font-weight:inherit;display:inline-flex;align-items:center;justify-content:center;min-width:44px;transition:border-color .22s ease,color .22s ease,background-color .22s ease,transform .2s ease}.mobile-item-menu:hover{transform:translateY(-1px)}.mobile-item-menu.active{border-color:color-mix(in srgb,var(--accent) 55%,var(--line));color:var(--accent);background:var(--accent-soft);box-shadow:0 10px 16px -14px color-mix(in srgb,var(--accent) 55%,transparent)}.mobile-menu-icon{width:18px;height:18px;display:block;fill:currentColor}}@media(min-width:921px){.mobile-menu-backdrop,.mobile-menu-sheet{display:none!important}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:root,:root[data-theme]{--bg: var(--color-app-bg);--surface: var(--color-app-surface);--surface-soft: var(--color-app-surface-soft);--ink: var(--color-app-text);--muted: var(--color-app-muted);--line: var(--color-app-line);--accent: var(--color-app-accent);--accent-soft: var(--color-app-accent-soft);--good: var(--color-app-good);--bad: var(--color-app-danger);--shadow: 0 24px 38px -30px color-mix(in srgb, var(--color-app-bg) 80%, transparent)}html[data-theme] body,html[data-theme] .sidebar,html[data-theme] .insight-card,html[data-theme] .panel,html[data-theme] .mcq-post,html[data-theme] .explore-card,html[data-theme] .stat-card,html[data-theme] .notify-card,html[data-theme] .flashcard,html[data-theme] .auth-card,html[data-theme] .mobile-nav,html[data-theme] .mobile-menu-sheet{transition:background .22s ease,border-color .18s ease,color .18s ease,box-shadow .22s ease}html[data-theme] .top-profile-avatar,html[data-theme] .mobile-menu-avatar,html[data-theme] .brand-badge,html[data-theme] .brand-badge-core{background:linear-gradient(140deg,var(--accent) 0%,color-mix(in srgb,var(--accent) 62%,var(--surface)) 100%);color:var(--color-app-accent-ink)}html[data-theme] .brand-badge-glyph{color:var(--color-app-accent-ink);text-shadow:none}html[data-theme] .review-controls label,html[data-theme] .review-result-meta,html[data-theme] .mobile-insight-toggle,html[data-theme] .source-link-host,html[data-theme] .suggestion-reason,html[data-theme] .flashcard-detail-code{color:var(--muted)}html[data-theme] .review-controls select,html[data-theme] .review-result-card,html[data-theme] .review-result-actions a,html[data-theme] .review-result-actions button,html[data-theme] .review-day-actions button,html[data-theme] .mobile-insight-toggle,html[data-theme] .lookup-panel,html[data-theme] .source-link-chip{border-color:var(--line);color:var(--ink);background:color-mix(in srgb,var(--surface-soft) 74%,var(--surface))}html[data-theme] .review-day-actions button:hover:not(:disabled),html[data-theme] .review-result-actions a:hover,html[data-theme] .review-result-actions button:hover:not(:disabled){border-color:color-mix(in srgb,var(--accent) 58%,var(--line));background:color-mix(in srgb,var(--accent) 13%,var(--surface))}html[data-theme] .review-result-card.passed,html[data-theme] .status-pill.pass,html[data-theme] .family-correct{border-color:color-mix(in srgb,var(--good) 46%,var(--line));color:color-mix(in srgb,var(--good) 75%,var(--ink));background:color-mix(in srgb,var(--good) 14%,var(--surface))}html[data-theme] .review-result-card.failed,html[data-theme] .status-pill.fail,html[data-theme] .family-wrong{border-color:color-mix(in srgb,var(--bad) 46%,var(--line));color:color-mix(in srgb,var(--bad) 78%,var(--ink));background:color-mix(in srgb,var(--bad) 14%,var(--surface))}html[data-theme] .family-eli5,html[data-theme] .family-memory,html[data-theme] .family-background,html[data-theme] .family-exp,html[data-theme] .family-other{border:1px solid color-mix(in srgb,var(--accent) 38%,var(--line));color:var(--ink);background:color-mix(in srgb,var(--accent) 16%,var(--surface))}html[data-theme] .mobile-menu-backdrop{background:color-mix(in srgb,var(--bg) 58%,transparent)}body,button,input,select,textarea,h1,h2,h3,h4,h5,h6{font-family:IBM Plex Sans,Segoe UI,system-ui,sans-serif}html[data-theme] .option-pill{border-color:var(--line);color:var(--ink);background:color-mix(in srgb,var(--surface-soft) 74%,var(--surface))}html[data-theme] .option-pill span:first-child{border-color:var(--line);color:var(--ink);background:color-mix(in srgb,var(--surface) 86%,var(--surface-soft))}html[data-theme] .option-pill.selected{border-color:color-mix(in srgb,var(--accent) 78%,var(--line));background:color-mix(in srgb,var(--accent) 18%,var(--surface));box-shadow:0 0 0 2px color-mix(in srgb,var(--accent) 25%,transparent)}html[data-theme] .option-pill.selected span:first-child{border-color:color-mix(in srgb,var(--accent) 70%,var(--line));color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,var(--surface))}html[data-theme] .option-pill.correct{border-color:color-mix(in srgb,var(--good) 64%,var(--line));background:color-mix(in srgb,var(--good) 14%,var(--surface))}html[data-theme] .option-pill.incorrect{border-color:color-mix(in srgb,var(--bad) 62%,var(--line));background:color-mix(in srgb,var(--bad) 13%,var(--surface))}html[data-theme] .answer-feedback{border-color:var(--line);color:var(--ink);background:color-mix(in srgb,var(--surface-soft) 78%,var(--surface))}html[data-theme] .answer-feedback p{color:var(--ink)}html[data-theme] .answer-feedback.correct{border-color:color-mix(in srgb,var(--good) 58%,var(--line));background:color-mix(in srgb,var(--good) 12%,var(--surface))}html[data-theme] .answer-feedback.incorrect{border-color:color-mix(in srgb,var(--bad) 58%,var(--line));background:color-mix(in srgb,var(--bad) 12%,var(--surface))}html[data-theme] .answer-feedback.pending{border-color:color-mix(in srgb,var(--line) 85%,transparent);background:color-mix(in srgb,var(--surface-soft) 72%,var(--surface))}html[data-theme] .explanation-block{border-color:var(--line);color:var(--ink);background:color-mix(in srgb,var(--surface-soft) 72%,var(--surface))}html[data-theme] .suggestion-reason{color:color-mix(in srgb,var(--ink) 92%,var(--muted))}html[data-theme] .exp-tab{border-color:var(--line);color:var(--muted);background:color-mix(in srgb,var(--surface) 88%,var(--surface-soft))}html[data-theme] .exp-tab:hover{border-color:color-mix(in srgb,var(--accent) 56%,var(--line));color:var(--ink)}html[data-theme] .exp-tab.active{border-color:color-mix(in srgb,var(--accent) 72%,var(--line));color:var(--accent);background:color-mix(in srgb,var(--accent) 17%,var(--surface))}html[data-theme] .rich-markdown{color:var(--ink);line-height:1.65}html[data-theme] .rich-markdown p,html[data-theme] .rich-markdown li,html[data-theme] .rich-markdown ul,html[data-theme] .rich-markdown ol,html[data-theme] .rich-markdown h1,html[data-theme] .rich-markdown h2,html[data-theme] .rich-markdown h3,html[data-theme] .rich-markdown h4{color:var(--ink)}html[data-theme] .rich-markdown .inline-link{color:var(--accent);text-decoration:underline;text-underline-offset:2px}html[data-theme] .rich-markdown .citation-bubble{border-color:color-mix(in srgb,var(--line) 85%,transparent);color:var(--ink);background:color-mix(in srgb,var(--surface) 90%,var(--surface-soft));font-weight:800}html[data-theme] .rich-markdown .citation-bubble:hover{border-color:color-mix(in srgb,var(--accent) 70%,var(--line));color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,var(--surface))}html[data-theme] .setting-block label{color:var(--muted)}html[data-theme] .setting-block select{border:1px solid color-mix(in srgb,var(--line) 86%,transparent);color:var(--ink);background:color-mix(in srgb,var(--surface) 88%,var(--surface-soft))}html[data-theme] .setting-block select option{color:var(--ink);background:var(--surface)}html[data-theme] .lookup-panel{border-color:color-mix(in srgb,var(--line) 86%,transparent);color:var(--ink);background:color-mix(in srgb,var(--surface-soft) 74%,var(--surface))}html[data-theme] .lookup-panel p{color:var(--ink)}html[data-theme] .lookup-actions button{border:1px solid color-mix(in srgb,var(--line) 84%,transparent);color:var(--ink);background:color-mix(in srgb,var(--surface) 88%,var(--surface-soft))}html[data-theme] .lookup-actions button:hover{border-color:color-mix(in srgb,var(--accent) 56%,var(--line))}html[data-theme] .lookup-actions .vocab-save-btn{border-color:color-mix(in srgb,var(--accent) 60%,var(--line));color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,var(--surface))}html[data-theme] .lookup-actions button:last-child{color:var(--muted)}html[data-theme] .lookup-actions .vocab-save-btn.saving{border-color:color-mix(in srgb,var(--accent) 58%,var(--line));color:var(--accent);background:color-mix(in srgb,var(--accent) 16%,var(--surface))}html[data-theme] .lookup-actions .vocab-save-btn.saved{border-color:color-mix(in srgb,var(--good) 66%,var(--line));color:color-mix(in srgb,var(--good) 82%,var(--ink));background:color-mix(in srgb,var(--good) 14%,var(--surface))}html[data-theme] .lookup-actions .vocab-save-btn.error{border-color:color-mix(in srgb,var(--bad) 64%,var(--line));color:color-mix(in srgb,var(--bad) 84%,var(--ink));background:color-mix(in srgb,var(--bad) 14%,var(--surface))}html[data-theme] .lookup-save-status.saved{color:color-mix(in srgb,var(--good) 84%,var(--ink))}html[data-theme] .lookup-save-status.idle{color:color-mix(in srgb,var(--muted) 86%,var(--ink))}html[data-theme] .lookup-save-status.error{color:color-mix(in srgb,var(--bad) 84%,var(--ink))}html[data-theme] .vocab-toolbar-btn,html[data-theme] .vocab-icon-btn{border:1px solid color-mix(in srgb,var(--line) 84%,transparent);color:var(--ink);background:color-mix(in srgb,var(--surface-soft) 74%,var(--surface));transition:border-color .18s ease,background-color .18s ease,color .18s ease,transform .18s ease}html[data-theme] .vocab-toolbar-btn:hover:not(:disabled),html[data-theme] .vocab-icon-btn:hover:not(:disabled){border-color:color-mix(in srgb,var(--accent) 62%,var(--line));background:color-mix(in srgb,var(--accent) 11%,var(--surface))}html[data-theme] .vocab-toolbar-btn.primary{border-color:color-mix(in srgb,var(--accent) 68%,var(--line));color:color-mix(in srgb,var(--accent) 84%,var(--ink));background:color-mix(in srgb,var(--accent) 14%,var(--surface))}html[data-theme] .vocab-table{border-color:color-mix(in srgb,var(--line) 84%,transparent);background:color-mix(in srgb,var(--surface-soft) 72%,var(--surface))}html[data-theme] .vocab-table-head{border-bottom-color:color-mix(in srgb,var(--line) 84%,transparent);background:color-mix(in srgb,var(--surface) 86%,var(--surface-soft))}html[data-theme] .vocab-table-head p{color:var(--muted)}html[data-theme] .vocab-table-row{border-bottom-color:color-mix(in srgb,var(--line) 76%,transparent)}html[data-theme] .vocab-serial{color:color-mix(in srgb,var(--accent) 84%,var(--ink))}html[data-theme] .vocab-word{color:var(--ink)}html[data-theme] .vocab-translation{color:color-mix(in srgb,var(--ink) 88%,var(--muted))}html[data-theme] .vocab-remove-btn{border-color:color-mix(in srgb,var(--bad) 58%,var(--line));color:color-mix(in srgb,var(--bad) 84%,var(--ink));background:color-mix(in srgb,var(--bad) 12%,var(--surface))}html[data-theme] .vocab-toolbar-btn:disabled,html[data-theme] .vocab-icon-btn:disabled{border-color:color-mix(in srgb,var(--line) 74%,transparent);color:color-mix(in srgb,var(--muted) 82%,var(--ink));background:color-mix(in srgb,var(--surface-soft) 66%,var(--surface));opacity:.72}html[data-theme] .flashcard,html[data-theme] .flashcard.flipped,html[data-theme] .flashcard-back{border-color:var(--line);color:var(--ink);background:linear-gradient(180deg,var(--surface) 0%,color-mix(in srgb,var(--surface-soft) 74%,var(--surface)) 100%)}html[data-theme] .flashcard-tag{border:1px solid color-mix(in srgb,var(--accent) 56%,var(--line));color:var(--accent);background:color-mix(in srgb,var(--accent) 16%,var(--surface))}html[data-theme] .flashcard-question-rich,html[data-theme] .flashcard-answer-rich,html[data-theme] .flashcard-question-rich p,html[data-theme] .flashcard-question-rich ul,html[data-theme] .flashcard-question-rich ol,html[data-theme] .flashcard-question-rich h1,html[data-theme] .flashcard-question-rich h2,html[data-theme] .flashcard-question-rich h3,html[data-theme] .flashcard-question-rich h4,html[data-theme] .flashcard-answer-rich p,html[data-theme] .flashcard-answer-rich ul,html[data-theme] .flashcard-answer-rich ol,html[data-theme] .flashcard-answer-rich h1,html[data-theme] .flashcard-answer-rich h2,html[data-theme] .flashcard-answer-rich h3,html[data-theme] .flashcard-answer-rich h4{color:var(--ink)}html[data-theme] .flashcard-detail-list,html[data-theme] .flashcard-detail-block{border-color:color-mix(in srgb,var(--line) 84%,transparent);color:var(--ink);background:color-mix(in srgb,var(--surface-soft) 74%,var(--surface))}html[data-theme] .flashcard-detail-list .rich-markdown{color:var(--ink)}html[data-theme] .flashcard-detail-list .rich-markdown .inline-link{color:var(--accent)}html[data-theme] .flashcard-detail-code{color:color-mix(in srgb,var(--accent) 78%,var(--ink))}html[data-theme] .flashcard-meta{color:var(--muted)}html[data-theme] .flashcard-detail-cta button{-webkit-appearance:none;appearance:none;-webkit-tap-highlight-color:transparent;border:1px solid color-mix(in srgb,var(--line) 84%,transparent);color:var(--ink);background:color-mix(in srgb,var(--surface-soft) 74%,var(--surface));border-radius:10px;min-height:38px;padding:8px 12px;font-weight:700;transition:border-color .18s ease,background-color .18s ease,color .18s ease,transform .18s ease}html[data-theme] .flashcard-detail-cta button:hover:not(:disabled){border-color:color-mix(in srgb,var(--accent) 66%,var(--line));color:color-mix(in srgb,var(--accent) 84%,var(--ink));background:color-mix(in srgb,var(--accent) 13%,var(--surface))}html[data-theme] .flashcard-detail-cta button:active:not(:disabled){border-color:color-mix(in srgb,var(--accent) 74%,var(--line));background:color-mix(in srgb,var(--accent) 22%,var(--surface))}html[data-theme] .flashcard-detail-cta button:disabled{border-color:color-mix(in srgb,var(--line) 76%,transparent);color:color-mix(in srgb,var(--muted) 82%,var(--ink));background:color-mix(in srgb,var(--surface-soft) 66%,var(--surface));opacity:.72}.app-shell-swipe-zone{touch-action:pan-y;will-change:transform,opacity}@media(prefers-reduced-motion:no-preference){html[data-swipe-dir]::view-transition-old(root),html[data-swipe-dir]::view-transition-new(root){animation-duration:.3s;animation-timing-function:cubic-bezier(.22,.9,.22,1);mix-blend-mode:normal}html[data-swipe-dir=left]::view-transition-old(root){animation-name:page-swipe-old-left}html[data-swipe-dir=left]::view-transition-new(root){animation-name:page-swipe-new-left}html[data-swipe-dir=right]::view-transition-old(root){animation-name:page-swipe-old-right}html[data-swipe-dir=right]::view-transition-new(root){animation-name:page-swipe-new-right}html[data-swipe-fallback=left] .app-shell-swipe-zone{animation:swipe-shell-enter-left .28s cubic-bezier(.22,.9,.22,1)}html[data-swipe-fallback=right] .app-shell-swipe-zone{animation:swipe-shell-enter-right .28s cubic-bezier(.22,.9,.22,1)}}@keyframes page-swipe-old-left{0%{transform:translate(0) scaleZ(1);opacity:1;filter:saturate(1)}to{transform:translate(-8%) scale3d(.984,.995,1);opacity:.46;filter:saturate(.9)}}@keyframes page-swipe-new-left{0%{transform:translate(16%) scale3d(1.028,.992,1);opacity:.58;filter:saturate(.9)}62%{transform:translate(-1.2%) scale3d(.997,1.004,1);opacity:1;filter:saturate(1.02)}to{transform:translate(0) scaleZ(1);opacity:1;filter:saturate(1)}}@keyframes page-swipe-old-right{0%{transform:translate(0) scaleZ(1);opacity:1;filter:saturate(1)}to{transform:translate(8%) scale3d(.984,.995,1);opacity:.46;filter:saturate(.9)}}@keyframes page-swipe-new-right{0%{transform:translate(-16%) scale3d(1.028,.992,1);opacity:.58;filter:saturate(.9)}62%{transform:translate(1.2%) scale3d(.997,1.004,1);opacity:1;filter:saturate(1.02)}to{transform:translate(0) scaleZ(1);opacity:1;filter:saturate(1)}}@keyframes swipe-shell-enter-left{0%{transform:translate(15%) scale3d(1.026,.993,1);opacity:.56}60%{transform:translate(-1%) scale3d(.998,1.003,1);opacity:1}to{transform:translate(0) scaleZ(1);opacity:1}}@keyframes swipe-shell-enter-right{0%{transform:translate(-15%) scale3d(1.026,.993,1);opacity:.56}60%{transform:translate(1%) scale3d(.998,1.003,1);opacity:1}to{transform:translate(0) scaleZ(1);opacity:1}}html[data-theme] .feed-cta button,html[data-theme] .ellipsis-pill{-webkit-appearance:none;appearance:none;-webkit-tap-highlight-color:transparent;border:1px solid color-mix(in srgb,var(--line) 84%,transparent);color:var(--ink);background:color-mix(in srgb,var(--surface-soft) 74%,var(--surface));transition:border-color .18s ease,background-color .18s ease,color .18s ease,transform .18s ease}html[data-theme] .feed-cta button:hover:not(:disabled),html[data-theme] .ellipsis-pill:hover:not(:disabled){border-color:color-mix(in srgb,var(--accent) 66%,var(--line));color:color-mix(in srgb,var(--accent) 82%,var(--ink));background:color-mix(in srgb,var(--accent) 13%,var(--surface))}html[data-theme] .feed-cta button:active:not(:disabled),html[data-theme] .ellipsis-pill:active:not(:disabled){border-color:color-mix(in srgb,var(--accent) 74%,var(--line));background:color-mix(in srgb,var(--accent) 22%,var(--surface));transform:translateY(0)}html[data-theme] .feed-cta button:disabled,html[data-theme] .ellipsis-pill:disabled{border-color:color-mix(in srgb,var(--line) 76%,transparent);color:color-mix(in srgb,var(--muted) 82%,var(--ink));background:color-mix(in srgb,var(--surface-soft) 66%,var(--surface));opacity:.72}html[data-theme] .exam-preset-row button,html[data-theme] .exam-setup-actions button,html[data-theme] .exam-session-actions button,html[data-theme] .exam-result-actions button,html[data-theme] .flashcard-actions button,html[data-theme] .icon-btn.pdf-btn{-webkit-appearance:none;appearance:none;-webkit-tap-highlight-color:transparent;border:1px solid color-mix(in srgb,var(--line) 84%,transparent);color:var(--ink);background:color-mix(in srgb,var(--surface-soft) 74%,var(--surface));transition:border-color .18s ease,background-color .18s ease,color .18s ease,transform .18s ease}html[data-theme] .exam-preset-row button:hover:not(:disabled),html[data-theme] .exam-setup-actions button:hover:not(:disabled),html[data-theme] .exam-session-actions button:hover:not(:disabled),html[data-theme] .exam-result-actions button:hover:not(:disabled),html[data-theme] .flashcard-actions button:hover:not(:disabled),html[data-theme] .icon-btn.pdf-btn:hover:not(:disabled){border-color:color-mix(in srgb,var(--accent) 66%,var(--line));background:color-mix(in srgb,var(--accent) 13%,var(--surface))}html[data-theme] .exam-preset-row button:active:not(:disabled),html[data-theme] .exam-setup-actions button:active:not(:disabled),html[data-theme] .exam-session-actions button:active:not(:disabled),html[data-theme] .exam-result-actions button:active:not(:disabled),html[data-theme] .flashcard-actions button:active:not(:disabled),html[data-theme] .icon-btn.pdf-btn:active:not(:disabled){border-color:color-mix(in srgb,var(--accent) 74%,var(--line));background:color-mix(in srgb,var(--accent) 22%,var(--surface));transform:translateY(0)}html[data-theme] .exam-preset-row button:disabled,html[data-theme] .exam-setup-actions button:disabled,html[data-theme] .exam-session-actions button:disabled,html[data-theme] .exam-result-actions button:disabled,html[data-theme] .flashcard-actions button:disabled,html[data-theme] .icon-btn.pdf-btn:disabled{border-color:color-mix(in srgb,var(--line) 76%,transparent);color:color-mix(in srgb,var(--muted) 82%,var(--ink));background:color-mix(in srgb,var(--surface-soft) 66%,var(--surface));opacity:.72}.feed-parent-trigger{position:fixed;top:12px;right:12px;z-index:132;display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;border:1px solid color-mix(in srgb,var(--line) 84%,transparent);color:var(--ink);background:linear-gradient(140deg,color-mix(in srgb,var(--surface) 72%,transparent),color-mix(in srgb,var(--surface-soft) 82%,transparent));backdrop-filter:blur(16px) saturate(170%);-webkit-backdrop-filter:blur(16px) saturate(170%);box-shadow:0 16px 28px -22px color-mix(in srgb,var(--bg) 65%,transparent),inset 0 1px color-mix(in srgb,var(--surface) 62%,transparent);transition:transform .2s ease,border-color .2s ease,box-shadow .24s ease,background-color .24s ease}.feed-parent-trigger:hover{transform:translateY(-1px);border-color:color-mix(in srgb,var(--accent) 58%,var(--line));box-shadow:0 20px 30px -24px color-mix(in srgb,var(--accent) 42%,transparent),inset 0 1px color-mix(in srgb,var(--surface) 74%,transparent)}.feed-parent-trigger.active{border-color:color-mix(in srgb,var(--accent) 72%,var(--line));color:var(--accent);background:linear-gradient(140deg,color-mix(in srgb,var(--accent) 18%,var(--surface)),color-mix(in srgb,var(--surface-soft) 86%,transparent))}.feed-parent-popup-backdrop{display:block;position:fixed;inset:0;z-index:144;opacity:0;pointer-events:none;background:color-mix(in srgb,var(--bg) 44%,transparent);transition:opacity .2s ease}.feed-parent-popup-backdrop.open{opacity:1;pointer-events:auto}.feed-parent-popup{display:grid;gap:10px;position:fixed;top:70px;right:14px;left:auto;width:min(370px,calc(100vw - 28px));z-index:145;opacity:0;pointer-events:none;transform:translateY(-8px) scale(.985);transition:transform .24s ease,opacity .2s ease;border:1px solid color-mix(in srgb,var(--line) 86%,transparent);border-radius:16px;padding:12px;background:linear-gradient(150deg,color-mix(in srgb,var(--surface) 90%,transparent),color-mix(in srgb,var(--surface-soft) 82%,transparent));backdrop-filter:blur(16px) saturate(170%);-webkit-backdrop-filter:blur(16px) saturate(170%);box-shadow:0 24px 34px -28px color-mix(in srgb,var(--bg) 70%,transparent),inset 0 1px color-mix(in srgb,var(--surface) 62%,transparent)}.feed-parent-popup.open{opacity:1;pointer-events:auto;transform:translateY(0) scale(1)}.feed-parent-popup-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.feed-parent-popup-head p{margin:0;font-size:.8rem;font-weight:800;color:var(--ink)}.feed-parent-popup-close{border:1px solid color-mix(in srgb,var(--line) 86%,transparent);border-radius:999px;background:color-mix(in srgb,var(--surface) 88%,var(--surface-soft));color:var(--muted);min-height:32px;padding:5px 11px;font-size:.74rem;font-weight:700;cursor:pointer}.feed-parent-popup select{min-height:44px;border:1px solid color-mix(in srgb,var(--line) 86%,transparent);border-radius:12px;padding:10px 12px;font-family:inherit;font-weight:700;color:var(--ink);background:color-mix(in srgb,var(--surface) 88%,var(--surface-soft))}.feed-parent-popup-note{margin:0;font-size:.76rem;color:var(--muted)}@media(max-width:920px){.feed-parent-trigger{top:auto;right:10px;bottom:calc(74px + env(safe-area-inset-bottom));width:38px;height:38px}.feed-parent-popup{top:auto;left:12px;right:12px;width:auto;bottom:calc(128px + env(safe-area-inset-bottom));transform:translateY(10px) scale(.985)}.feed-parent-popup.open{transform:translateY(0) scale(1)}}.scroll-top-arrow{z-index:138}@media(max-width:920px){.scroll-top-arrow{right:10px;bottom:calc(120px + env(safe-area-inset-bottom));z-index:138}}html[data-theme] .auth-card label{color:var(--ink)}html[data-theme] .auth-card input,html[data-theme] .explore-controls input,html[data-theme] .explore-controls select,html[data-theme] .category-browser select,html[data-theme] .feed-parent-popup select{border:1px solid color-mix(in srgb,var(--line) 86%,transparent);color:var(--ink);caret-color:var(--accent);background:color-mix(in srgb,var(--surface) 88%,var(--surface-soft))}html[data-theme] .auth-card input::placeholder,html[data-theme] .explore-controls input::placeholder{color:var(--muted);opacity:1}html[data-theme] .auth-card input:-webkit-autofill,html[data-theme] .auth-card input:-webkit-autofill:hover,html[data-theme] .auth-card input:-webkit-autofill:focus,html[data-theme] .auth-card input:-webkit-autofill:active{-webkit-text-fill-color:var(--ink);box-shadow:0 0 0 1000px color-mix(in srgb,var(--surface) 88%,var(--surface-soft)) inset;transition:background-color 9999s ease-out}@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-scale-x:1;--tw-scale-y:1;--tw-scale-z:1;--tw-rotate-x:initial;--tw-rotate-y:initial;--tw-rotate-z:initial;--tw-skew-x:initial;--tw-skew-y:initial;--tw-pan-x:initial;--tw-pan-y:initial;--tw-pinch-zoom:initial;--tw-space-y-reverse:0;--tw-space-x-reverse:0;--tw-divide-x-reverse:0;--tw-border-style:solid;--tw-divide-y-reverse:0;--tw-leading:initial;--tw-font-weight:initial;--tw-tracking:initial;--tw-ordinal:initial;--tw-slashed-zero:initial;--tw-numeric-figure:initial;--tw-numeric-spacing:initial;--tw-numeric-fraction:initial;--tw-shadow:0 0 #0000;--tw-shadow-color:initial;--tw-shadow-alpha:100%;--tw-inset-shadow:0 0 #0000;--tw-inset-shadow-color:initial;--tw-inset-shadow-alpha:100%;--tw-ring-color:initial;--tw-ring-shadow:0 0 #0000;--tw-inset-ring-color:initial;--tw-inset-ring-shadow:0 0 #0000;--tw-ring-inset:initial;--tw-ring-offset-width:0px;--tw-ring-offset-color:#fff;--tw-ring-offset-shadow:0 0 #0000;--tw-outline-style:solid;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial;--tw-backdrop-blur:initial;--tw-backdrop-brightness:initial;--tw-backdrop-contrast:initial;--tw-backdrop-grayscale:initial;--tw-backdrop-hue-rotate:initial;--tw-backdrop-invert:initial;--tw-backdrop-opacity:initial;--tw-backdrop-saturate:initial;--tw-backdrop-sepia:initial;--tw-duration:initial}}}@layer theme{:root,:host{--font-sans:"IBM Plex Sans", "Inter", "Segoe UI", system-ui, sans-serif;--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--color-black:#000;--color-white:#fff;--spacing:.25rem;--container-md:28rem;--text-xs:.75rem;--text-xs--line-height:calc(1 / .75);--text-sm:.875rem;--text-sm--line-height:calc(1.25 / .875);--text-base:1rem;--text-base--line-height: 1.5 ;--text-lg:1.125rem;--text-lg--line-height:calc(1.75 / 1.125);--text-xl:1.25rem;--text-xl--line-height:calc(1.75 / 1.25);--font-weight-semibold:600;--font-weight-bold:700;--font-weight-extrabold:800;--tracking-tight:-.025em;--tracking-wide:.025em;--leading-tight:1.25;--leading-relaxed:1.625;--radius-lg:.5rem;--radius-xl:.75rem;--radius-2xl:1rem;--blur-sm:8px;--blur-md:12px;--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono);--color-app-bg:#07101f;--color-app-surface:#101d34;--color-app-surface-soft:#132440;--color-app-line:#263c63;--color-app-text:#eff5ff;--color-app-muted:#9fb4d6;--color-app-accent:#66c8ff;--color-app-accent-soft:#17395a;--color-app-accent-ink:#041c33;--color-app-danger:#ff808c;--color-app-good:#4bd293}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab,red,red)){::placeholder{color:color-mix(in oklab,currentcolor 50%,transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:calc(var(--spacing) * 0);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:var(--color-app-text);background:radial-gradient(circle at 12% -18%,#66c8ff38 0%,transparent 44%),radial-gradient(circle at 96% 4%,#132440bf 0%,transparent 38%),var(--color-app-bg)}@supports (color:color-mix(in lab,red,red)){body{background:radial-gradient(circle at 12% -18%,color-mix(in srgb,var(--color-app-accent) 22%,transparent) 0%,transparent 44%),radial-gradient(circle at 96% 4%,color-mix(in srgb,var(--color-app-surface-soft) 75%,transparent) 0%,transparent 38%),var(--color-app-bg)}}body{transition:background .22s,color .18s}a{color:inherit;text-decoration-line:none}button,input,select,textarea{font-family:var(--font-sans)}:focus-visible{outline:3px solid #66c8ff85}@supports (color:color-mix(in lab,red,red)){:focus-visible{outline:3px solid color-mix(in srgb,var(--color-app-accent) 52%,transparent)}}:focus-visible{outline-offset:2px}}@layer components{.surface-panel{border:1px solid var(--color-app-line);border-radius:var(--radius-2xl);background-image:linear-gradient(180deg,var(--color-app-surface) 0%,var(--color-app-surface-soft) 100%);--tw-shadow:0 24px 36px -30px var(--tw-shadow-color,#020b19d9);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow)}.control-chip{border:1px solid var(--color-app-line);color:var(--color-app-muted);padding-inline:calc(var(--spacing) * 3);padding-block:calc(var(--spacing) * 1.5);font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height));--tw-font-weight:var(--font-weight-bold);font-weight:var(--font-weight-bold);transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration));--tw-duration:.2s;background:#132440b8;border-radius:3.40282e38px;transition-duration:.2s}@supports (color:color-mix(in lab,red,red)){.control-chip{background:color-mix(in srgb,var(--color-app-surface-soft) 72%,transparent)}}.control-chip.active{border-color:#5098ca}@supports (color:color-mix(in lab,red,red)){.control-chip.active{border-color:color-mix(in srgb,var(--color-app-accent) 66%,var(--color-app-line))}}.control-chip.active{color:var(--color-app-accent);background:#203e5f}@supports (color:color-mix(in lab,red,red)){.control-chip.active{background:color-mix(in srgb,var(--color-app-accent) 16%,var(--color-app-surface-soft))}}.app-input{border:1px solid var(--color-app-line);color:var(--color-app-text);border-radius:var(--radius-xl);width:100%;padding-inline:calc(var(--spacing) * 3);padding-block:calc(var(--spacing) * 2.5);font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height));transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration));--tw-duration:.15s;--tw-outline-style:none;background:#132440d1;outline-style:none;transition-duration:.15s}@supports (color:color-mix(in lab,red,red)){.app-input{background:color-mix(in srgb,var(--color-app-surface-soft) 82%,transparent)}}.app-input::placeholder{color:var(--color-app-muted)}.app-input:focus{border-color:#4f96c7}@supports (color:color-mix(in lab,red,red)){.app-input:focus{border-color:color-mix(in srgb,var(--color-app-accent) 64%,var(--color-app-line))}}.app-input:focus{box-shadow:0 0 0 3px #66c8ff2e}@supports (color:color-mix(in lab,red,red)){.app-input:focus{box-shadow:0 0 0 3px color-mix(in srgb,var(--color-app-accent) 18%,transparent)}}.app-button{border:1px solid #4785b4}@supports (color:color-mix(in lab,red,red)){.app-button{border:1px solid color-mix(in srgb,var(--color-app-accent) 52%,var(--color-app-line))}}.app-button{color:var(--color-app-text);border-radius:var(--radius-xl);padding-inline:calc(var(--spacing) * 4);padding-block:calc(var(--spacing) * 2.5);font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height));--tw-font-weight:var(--font-weight-bold);font-weight:var(--font-weight-bold);transition-property:all;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration));--tw-duration:.2s;background:linear-gradient(#66c8ff24,#0000);justify-content:center;align-items:center;transition-duration:.2s;display:inline-flex}@supports (color:color-mix(in lab,red,red)){.app-button{background:linear-gradient(180deg,color-mix(in srgb,var(--color-app-accent) 14%,transparent) 0%,transparent 100%)}}.app-button:hover:not(:disabled){border-color:#58a9dd}@supports (color:color-mix(in lab,red,red)){.app-button:hover:not(:disabled){border-color:color-mix(in srgb,var(--color-app-accent) 78%,var(--color-app-line))}}.app-button:hover:not(:disabled){transform:translateY(-1px)}.app-button:disabled{cursor:not-allowed;opacity:.65}.app-button-danger{border-color:#8e5d77}@supports (color:color-mix(in lab,red,red)){.app-button-danger{border-color:color-mix(in srgb,var(--color-app-danger) 48%,var(--color-app-line))}}.app-button-danger{color:#fc97a3}@supports (color:color-mix(in lab,red,red)){.app-button-danger{color:color-mix(in srgb,var(--color-app-danger) 80%,var(--color-app-text))}}.app-button-danger{background:#2a283e}@supports (color:color-mix(in lab,red,red)){.app-button-danger{background:color-mix(in srgb,var(--color-app-danger) 11%,var(--color-app-surface))}}.loading-screen{min-height:100vh;font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height));color:var(--color-app-muted);place-items:center;display:grid}.reveal{animation:.32s both ui-rise}.section-header{border:1px solid var(--color-app-line);border-radius:var(--radius-2xl);padding-inline:calc(var(--spacing) * 4);padding-block:calc(var(--spacing) * 3);--tw-shadow:0 22px 32px -30px var(--tw-shadow-color,#000c);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow);background:linear-gradient(180deg,var(--color-app-surface) 0%,var(--color-app-surface-soft) 100%)}.section-header h2{margin:calc(var(--spacing) * 0);--tw-font-weight:var(--font-weight-extrabold);font-size:1.1rem;font-weight:var(--font-weight-extrabold);--tw-tracking:var(--tracking-tight);letter-spacing:var(--tracking-tight);color:var(--color-app-text)}.section-header p{margin-top:calc(var(--spacing) * 2);margin-bottom:calc(var(--spacing) * 0);font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height));color:var(--color-app-muted)}.insight-card,.panel,.stat-card,.notify-card,.auth-card,.flashcard,.explore-card,.exam-setup,.exam-session,.exam-results{border:1px solid var(--color-app-line);border-radius:var(--radius-2xl);background-image:linear-gradient(180deg,var(--color-app-surface) 0%,var(--color-app-surface-soft) 100%);--tw-shadow:0 24px 36px -30px var(--tw-shadow-color,#030c18d9);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow)}.insight-card,.panel,.stat-card,.notify-card,.auth-card{padding:calc(var(--spacing) * 4)}.insight-card h3,.insight-card h4,.panel h3{margin:calc(var(--spacing) * 0);margin-bottom:calc(var(--spacing) * 2);font-size:var(--text-base);line-height:var(--tw-leading,var(--text-base--line-height));--tw-font-weight:var(--font-weight-extrabold);font-weight:var(--font-weight-extrabold);color:var(--color-app-text)}.insight-card p,.panel p,.stat-card p,.notify-card p,.muted,.notify-meta,.profile-sub{color:var(--color-app-muted)!important}.feed-list{gap:calc(var(--spacing) * 3.5);display:grid}.mcq-post{border:1px solid var(--color-app-line);border-radius:var(--radius-2xl);background-image:linear-gradient(180deg,var(--color-app-surface) 0%,var(--color-app-surface-soft) 100%);--tw-shadow:0 24px 34px -30px var(--tw-shadow-color,#000000db);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow);overflow:hidden}.post-header{border-bottom:1px solid var(--color-app-line);align-items:center;gap:calc(var(--spacing) * 3);padding-inline:calc(var(--spacing) * 4);padding-block:calc(var(--spacing) * 3);background:linear-gradient(#66c8ff1c,#0000);display:flex}@supports (color:color-mix(in lab,red,red)){.post-header{background:linear-gradient(180deg,color-mix(in srgb,var(--color-app-accent) 11%,transparent) 0%,transparent 100%)}}.post-icon-actions{gap:calc(var(--spacing) * 2);margin-left:auto;display:flex}.avatar{height:calc(var(--spacing) * 10);width:calc(var(--spacing) * 10);font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height));--tw-font-weight:var(--font-weight-extrabold);font-weight:var(--font-weight-extrabold);color:var(--color-app-accent);background:#66c8ff29;border-radius:3.40282e38px;place-items:center;display:grid}@supports (color:color-mix(in lab,red,red)){.avatar{background:color-mix(in srgb,var(--color-app-accent) 16%,transparent)}}.post-topic{margin:calc(var(--spacing) * 0);font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height));--tw-font-weight:var(--font-weight-extrabold);font-weight:var(--font-weight-extrabold);color:var(--color-app-text)}.post-meta{margin:calc(var(--spacing) * 0);margin-top:calc(var(--spacing) * .5);font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height));color:var(--color-app-muted)}.icon-btn{border:1px solid var(--color-app-line);color:var(--color-app-text);height:calc(var(--spacing) * 9);min-width:calc(var(--spacing) * 9);border-radius:var(--radius-xl);padding-inline:calc(var(--spacing) * 2);font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height));--tw-font-weight:var(--font-weight-bold);font-weight:var(--font-weight-bold);transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration));--tw-duration:.2s;background:#132440b8;place-items:center;transition-duration:.2s;display:grid}@supports (color:color-mix(in lab,red,red)){.icon-btn{background:color-mix(in srgb,var(--color-app-surface-soft) 72%,transparent)}}.icon-btn:hover{border-color:#4785b4}@supports (color:color-mix(in lab,red,red)){.icon-btn:hover{border-color:color-mix(in srgb,var(--color-app-accent) 52%,var(--color-app-line))}}.post-body{padding-inline:calc(var(--spacing) * 4);padding-block:calc(var(--spacing) * 4)}.question-rich-text{margin-bottom:calc(var(--spacing) * 3);--tw-leading:var(--leading-relaxed);font-size:1.03rem;line-height:var(--leading-relaxed);--tw-font-weight:var(--font-weight-semibold);font-weight:var(--font-weight-semibold);color:var(--color-app-text)}.option-list{gap:calc(var(--spacing) * 2.5);display:grid}.option-pill{border:1px solid var(--color-app-line);color:var(--color-app-text);align-items:flex-start;gap:calc(var(--spacing) * 2.5);border-radius:var(--radius-xl);width:100%;padding-inline:calc(var(--spacing) * 3);padding-block:calc(var(--spacing) * 3);text-align:left;transition-property:all;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration));--tw-duration:.15s;background:#132440bd;transition-duration:.15s;display:flex}@supports (color:color-mix(in lab,red,red)){.option-pill{background:color-mix(in srgb,var(--color-app-surface-soft) 74%,transparent)}}.option-pill:hover:not(:disabled){border-color:#4a8aba}@supports (color:color-mix(in lab,red,red)){.option-pill:hover:not(:disabled){border-color:color-mix(in srgb,var(--color-app-accent) 56%,var(--color-app-line))}}.option-pill:hover:not(:disabled){transform:translateY(-1px)}.option-pill span:first-child{border:1px solid var(--color-app-line);height:calc(var(--spacing) * 6);width:calc(var(--spacing) * 6);min-width:calc(var(--spacing) * 6);font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height));--tw-font-weight:var(--font-weight-extrabold);font-weight:var(--font-weight-extrabold);border-radius:3.40282e38px;place-items:center;display:grid}.option-pill.selected{border-color:#54a1d3}@supports (color:color-mix(in lab,red,red)){.option-pill.selected{border-color:color-mix(in srgb,var(--color-app-accent) 72%,var(--color-app-line))}}.option-pill.selected{background:#1f3b5b}@supports (color:color-mix(in lab,red,red)){.option-pill.selected{background:color-mix(in srgb,var(--color-app-accent) 14%,var(--color-app-surface-soft))}}.option-pill.correct{border-color:#3fa284}@supports (color:color-mix(in lab,red,red)){.option-pill.correct{border-color:color-mix(in srgb,var(--color-app-good) 68%,var(--color-app-line))}}.option-pill.correct{background:#1c404d}@supports (color:color-mix(in lab,red,red)){.option-pill.correct{background:color-mix(in srgb,var(--color-app-good) 16%,var(--color-app-surface-soft))}}.option-pill.incorrect{border-color:#ad667c}@supports (color:color-mix(in lab,red,red)){.option-pill.incorrect{border-color:color-mix(in srgb,var(--color-app-danger) 62%,var(--color-app-line))}}.option-pill.incorrect{background:#34314b}@supports (color:color-mix(in lab,red,red)){.option-pill.incorrect{background:color-mix(in srgb,var(--color-app-danger) 14%,var(--color-app-surface-soft))}}.post-footer{border-top:1px solid var(--color-app-line);gap:calc(var(--spacing) * 2.5);padding-inline:calc(var(--spacing) * 4);padding-block:calc(var(--spacing) * 3.5);display:grid}.post-actions button,.feed-cta button,.flashcard-actions button,.exam-preset-row button,.exam-setup-actions button,.exam-session-actions button,.exam-result-actions button,.lookup-actions button{border:1px solid #4988b7}@supports (color:color-mix(in lab,red,red)){.post-actions button,.feed-cta button,.flashcard-actions button,.exam-preset-row button,.exam-setup-actions button,.exam-session-actions button,.exam-result-actions button,.lookup-actions button{border:1px solid color-mix(in srgb,var(--color-app-accent) 54%,var(--color-app-line))}}.post-actions button,.feed-cta button,.flashcard-actions button,.exam-preset-row button,.exam-setup-actions button,.exam-session-actions button,.exam-result-actions button,.lookup-actions button{color:var(--color-app-text);border-radius:var(--radius-xl);padding-inline:calc(var(--spacing) * 3);padding-block:calc(var(--spacing) * 2);font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height));--tw-font-weight:var(--font-weight-extrabold);font-weight:var(--font-weight-extrabold);background:linear-gradient(#66c8ff24,#0000)}@supports (color:color-mix(in lab,red,red)){.post-actions button,.feed-cta button,.flashcard-actions button,.exam-preset-row button,.exam-setup-actions button,.exam-session-actions button,.exam-result-actions button,.lookup-actions button{background:linear-gradient(180deg,color-mix(in srgb,var(--color-app-accent) 14%,transparent) 0%,transparent 100%)}}.post-actions button:hover,.feed-cta button:hover,.flashcard-actions button:hover,.exam-preset-row button:hover,.exam-setup-actions button:hover,.exam-session-actions button:hover,.exam-result-actions button:hover,.lookup-actions button:hover{border-color:#56a5d8}@supports (color:color-mix(in lab,red,red)){.post-actions button:hover,.feed-cta button:hover,.flashcard-actions button:hover,.exam-preset-row button:hover,.exam-setup-actions button:hover,.exam-session-actions button:hover,.exam-result-actions button:hover,.lookup-actions button:hover{border-color:color-mix(in srgb,var(--color-app-accent) 75%,var(--color-app-line))}}.answer-feedback{border:1px solid var(--color-app-line);border-radius:var(--radius-xl);padding-inline:calc(var(--spacing) * 3);padding-block:calc(var(--spacing) * 2.5);background:#132440d1}@supports (color:color-mix(in lab,red,red)){.answer-feedback{background:color-mix(in srgb,var(--color-app-surface-soft) 82%,transparent)}}.answer-feedback.correct{border-color:#3d9981}@supports (color:color-mix(in lab,red,red)){.answer-feedback.correct{border-color:color-mix(in srgb,var(--color-app-good) 62%,var(--color-app-line))}}.answer-feedback.incorrect{border-color:#ad667c}@supports (color:color-mix(in lab,red,red)){.answer-feedback.incorrect{border-color:color-mix(in srgb,var(--color-app-danger) 62%,var(--color-app-line))}}.explanation-block,.lookup-panel,.flashcard-detail-block,.leader-row,.impact-card,.topic-impact-row,.badge-card{border:1px solid var(--color-app-line);border-radius:var(--radius-xl);background:#132440c7}@supports (color:color-mix(in lab,red,red)){.explanation-block,.lookup-panel,.flashcard-detail-block,.leader-row,.impact-card,.topic-impact-row,.badge-card{background:color-mix(in srgb,var(--color-app-surface-soft) 78%,transparent)}}.explanation-block,.lookup-panel,.flashcard-detail-block,.badge-card{padding:calc(var(--spacing) * 3)}.exp-tab,.topic-chip,.story-pill,.source-link-chip,.explore-mode-btn{border:1px solid var(--color-app-line);color:var(--color-app-muted);padding-inline:calc(var(--spacing) * 3);padding-block:calc(var(--spacing) * 1.5);font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height));--tw-font-weight:var(--font-weight-bold);font-weight:var(--font-weight-bold);background:#132440b8;border-radius:3.40282e38px}@supports (color:color-mix(in lab,red,red)){.exp-tab,.topic-chip,.story-pill,.source-link-chip,.explore-mode-btn{background:color-mix(in srgb,var(--color-app-surface-soft) 72%,transparent)}}.exp-tab.active,.topic-chip.active,.explore-mode-btn.active{border-color:#4e93c4}@supports (color:color-mix(in lab,red,red)){.exp-tab.active,.topic-chip.active,.explore-mode-btn.active{border-color:color-mix(in srgb,var(--color-app-accent) 62%,var(--color-app-line))}}.exp-tab.active,.topic-chip.active,.explore-mode-btn.active{color:var(--color-app-accent);background:#203e5f}@supports (color:color-mix(in lab,red,red)){.exp-tab.active,.topic-chip.active,.explore-mode-btn.active{background:color-mix(in srgb,var(--color-app-accent) 16%,var(--color-app-surface-soft))}}.explore-grid{gap:calc(var(--spacing) * 3);grid-template-columns:repeat(1,minmax(0,1fr));display:grid}@media(min-width:48rem){.explore-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(min-width:96rem){.explore-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}.explore-card{padding:calc(var(--spacing) * 3);transition-property:all;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration));--tw-duration:.2s;transition-duration:.2s}.explore-card:hover{border-color:#4988b7}@supports (color:color-mix(in lab,red,red)){.explore-card:hover{border-color:color-mix(in srgb,var(--color-app-accent) 54%,var(--color-app-line))}}.explore-card:hover{transform:translateY(-1px)}.explore-topic{margin-bottom:calc(var(--spacing) * 2);font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height));--tw-font-weight:var(--font-weight-extrabold);font-weight:var(--font-weight-extrabold);--tw-tracking:var(--tracking-wide);letter-spacing:var(--tracking-wide);color:var(--color-app-accent)!important}.auth-page{min-height:100vh;padding:calc(var(--spacing) * 4);place-items:center;display:grid}.auth-card{width:100%;max-width:var(--container-md);padding:calc(var(--spacing) * 5)}.auth-card h1{margin:calc(var(--spacing) * 0);font-size:var(--text-xl);line-height:var(--tw-leading,var(--text-xl--line-height));--tw-font-weight:var(--font-weight-extrabold);font-weight:var(--font-weight-extrabold);color:var(--color-app-text)}.auth-card p{margin-top:calc(var(--spacing) * 2);margin-bottom:calc(var(--spacing) * 4);font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height));color:var(--color-app-muted)}.auth-card form{gap:calc(var(--spacing) * 2.5);display:grid}.auth-card label{gap:calc(var(--spacing) * 1);font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height));--tw-font-weight:var(--font-weight-semibold);font-weight:var(--font-weight-semibold);color:var(--color-app-text);display:grid}.auth-card input{border:1px solid var(--color-app-line);color:var(--color-app-text);border-radius:var(--radius-xl);padding-inline:calc(var(--spacing) * 3);padding-block:calc(var(--spacing) * 2.5);font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height));background:#132440bf}@supports (color:color-mix(in lab,red,red)){.auth-card input{background:color-mix(in srgb,var(--color-app-surface-soft) 75%,transparent)}}.link-btn{padding:calc(var(--spacing) * 0);font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height));--tw-font-weight:var(--font-weight-semibold);font-weight:var(--font-weight-semibold);background-color:#0000;color:var(--color-app-accent)!important}.mobile-nav{display:none}.error-msg{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height));--tw-font-weight:var(--font-weight-semibold);font-weight:var(--font-weight-semibold);color:var(--color-app-danger)!important}.tiny-note{font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height))}}@layer utilities{.collapse{visibility:collapse}.invisible{visibility:hidden}.visible{visibility:visible}.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.not-sr-only{clip-path:none;white-space:normal;width:auto;height:auto;margin:0;padding:0;position:static;overflow:visible}.absolute{position:absolute}.fixed{position:fixed}.relative{position:relative}.static{position:static}.sticky{position:sticky}.inset-0{inset:calc(var(--spacing) * 0)}.inset-x-2{inset-inline:calc(var(--spacing) * 2)}.start{inset-inline-start:var(--spacing)}.start\!{inset-inline-start:var(--spacing)!important}.end{inset-inline-end:var(--spacing)}.bottom-\[calc\(8px\+env\(safe-area-inset-bottom\)\)\]{bottom:calc(8px + env(safe-area-inset-bottom))}.bottom-\[calc\(74px\+env\(safe-area-inset-bottom\)\)\]{bottom:calc(74px + env(safe-area-inset-bottom))}.isolate{isolation:isolate}.isolation-auto{isolation:auto}.z-\[120\]{z-index:120}.z-\[130\]{z-index:130}.z-\[131\]{z-index:131}.container{width:100%}@media(min-width:40rem){.container{max-width:40rem}}@media(min-width:48rem){.container{max-width:48rem}}@media(min-width:64rem){.container{max-width:64rem}}@media(min-width:80rem){.container{max-width:80rem}}@media(min-width:96rem){.container{max-width:96rem}}.m-0{margin:calc(var(--spacing) * 0)}.mx-auto{margin-inline:auto}.mt-2{margin-top:calc(var(--spacing) * 2)}.mt-2\.5{margin-top:calc(var(--spacing) * 2.5)}.mt-4{margin-top:calc(var(--spacing) * 4)}.mb-2{margin-bottom:calc(var(--spacing) * 2)}.mb-2\.5{margin-bottom:calc(var(--spacing) * 2.5)}.mb-3{margin-bottom:calc(var(--spacing) * 3)}.mb-3\.5{margin-bottom:calc(var(--spacing) * 3.5)}.block{display:block}.contents{display:contents}.flex{display:flex}.flow-root{display:flow-root}.grid{display:grid}.hidden{display:none}.inline{display:inline}.inline-block{display:inline-block}.inline-flex{display:inline-flex}.inline-grid{display:inline-grid}.inline-table{display:inline-table}.list-item{display:list-item}.table{display:table}.table-caption{display:table-caption}.table-cell{display:table-cell}.table-column{display:table-column}.table-column-group{display:table-column-group}.table-footer-group{display:table-footer-group}.table-header-group{display:table-header-group}.table-row{display:table-row}.table-row-group{display:table-row-group}.h-4{height:calc(var(--spacing) * 4)}.h-8{height:calc(var(--spacing) * 8)}.h-9{height:calc(var(--spacing) * 9)}.h-10{height:calc(var(--spacing) * 10)}.h-11{height:calc(var(--spacing) * 11)}.h-fit{height:fit-content}.min-h-\[46px\]{min-height:46px}.w-4{width:calc(var(--spacing) * 4)}.w-8{width:calc(var(--spacing) * 8)}.w-9{width:calc(var(--spacing) * 9)}.w-11{width:calc(var(--spacing) * 11)}.w-full{width:100%}.max-w-\[1560px\]{max-width:1560px}.min-w-0{min-width:calc(var(--spacing) * 0)}.flex-1{flex:1}.shrink{flex-shrink:1}.shrink-0{flex-shrink:0}.grow{flex-grow:1}.border-collapse{border-collapse:collapse}.translate-none{translate:none}.scale-3d{scale:var(--tw-scale-x) var(--tw-scale-y) var(--tw-scale-z)}.transform{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)}.transform\!{transform:var(--tw-rotate-x,) var(--tw-rotate-y,) var(--tw-rotate-z,) var(--tw-skew-x,) var(--tw-skew-y,)!important}.touch-pinch-zoom{--tw-pinch-zoom:pinch-zoom;touch-action:var(--tw-pan-x,) var(--tw-pan-y,) var(--tw-pinch-zoom,)}.resize{resize:both}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-cols-8{grid-template-columns:repeat(8,minmax(0,1fr))}.flex-col{flex-direction:column}.flex-wrap{flex-wrap:wrap}.place-items-center{place-items:center}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-0\.5{gap:calc(var(--spacing) * .5)}.gap-1{gap:calc(var(--spacing) * 1)}.gap-2{gap:calc(var(--spacing) * 2)}.gap-2\.5{gap:calc(var(--spacing) * 2.5)}.gap-3{gap:calc(var(--spacing) * 3)}.gap-4{gap:calc(var(--spacing) * 4)}:where(.space-y-reverse>:not(:last-child)){--tw-space-y-reverse:1}:where(.space-x-reverse>:not(:last-child)){--tw-space-x-reverse:1}:where(.divide-x>:not(:last-child)){--tw-divide-x-reverse:0;border-inline-style:var(--tw-border-style);border-inline-start-width:calc(1px * var(--tw-divide-x-reverse));border-inline-end-width:calc(1px * calc(1 - var(--tw-divide-x-reverse)))}:where(.divide-y>:not(:last-child)){--tw-divide-y-reverse:0;border-bottom-style:var(--tw-border-style);border-top-style:var(--tw-border-style);border-top-width:calc(1px * var(--tw-divide-y-reverse));border-bottom-width:calc(1px * calc(1 - var(--tw-divide-y-reverse)))}:where(.divide-y-reverse>:not(:last-child)){--tw-divide-y-reverse:1}.truncate{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.overflow-hidden{overflow:hidden}.rounded-2xl{border-radius:var(--radius-2xl)}.rounded-full{border-radius:3.40282e38px}.rounded-lg{border-radius:var(--radius-lg)}.rounded-xl{border-radius:var(--radius-xl)}.rounded-s{border-start-start-radius:.25rem;border-end-start-radius:.25rem}.rounded-ss{border-start-start-radius:.25rem}.rounded-e{border-start-end-radius:.25rem;border-end-end-radius:.25rem}.rounded-se{border-start-end-radius:.25rem}.rounded-ee{border-end-end-radius:.25rem}.rounded-es{border-end-start-radius:.25rem}.rounded-t{border-top-left-radius:.25rem;border-top-right-radius:.25rem}.rounded-l{border-top-left-radius:.25rem;border-bottom-left-radius:.25rem}.rounded-tl{border-top-left-radius:.25rem}.rounded-r{border-top-right-radius:.25rem;border-bottom-right-radius:.25rem}.rounded-tr{border-top-right-radius:.25rem}.rounded-b{border-bottom-right-radius:.25rem;border-bottom-left-radius:.25rem}.rounded-br{border-bottom-right-radius:.25rem}.rounded-bl{border-bottom-left-radius:.25rem}.border{border-style:var(--tw-border-style);border-width:1px}.border-0{border-style:var(--tw-border-style);border-width:0}.border-x{border-inline-style:var(--tw-border-style);border-inline-width:1px}.border-y{border-block-style:var(--tw-border-style);border-block-width:1px}.border-s{border-inline-start-style:var(--tw-border-style);border-inline-start-width:1px}.border-e{border-inline-end-style:var(--tw-border-style);border-inline-end-width:1px}.border-bs{border-block-start-style:var(--tw-border-style);border-block-start-width:1px}.border-be{border-block-end-style:var(--tw-border-style);border-block-end-width:1px}.border-t{border-top-style:var(--tw-border-style);border-top-width:1px}.border-r{border-right-style:var(--tw-border-style);border-right-width:1px}.border-b{border-bottom-style:var(--tw-border-style);border-bottom-width:1px}.border-l{border-left-style:var(--tw-border-style);border-left-width:1px}.border-\[color-mix\(in_srgb\,var\(--color-app-accent\)_52\%\,var\(--color-app-line\)\)\]{border-color:#4785b4}@supports (color:color-mix(in lab,red,red)){.border-\[color-mix\(in_srgb\,var\(--color-app-accent\)_52\%\,var\(--color-app-line\)\)\]{border-color:color-mix(in srgb,var(--color-app-accent) 52%,var(--color-app-line))}}.border-\[color-mix\(in_srgb\,var\(--color-app-accent\)_70\%\,var\(--color-app-line\)\)\]{border-color:#539ed0}@supports (color:color-mix(in lab,red,red)){.border-\[color-mix\(in_srgb\,var\(--color-app-accent\)_70\%\,var\(--color-app-line\)\)\]{border-color:color-mix(in srgb,var(--color-app-accent) 70%,var(--color-app-line))}}.border-\[color-mix\(in_srgb\,var\(--color-app-danger\)_50\%\,var\(--color-app-line\)\)\]{border-color:#935e78}@supports (color:color-mix(in lab,red,red)){.border-\[color-mix\(in_srgb\,var\(--color-app-danger\)_50\%\,var\(--color-app-line\)\)\]{border-color:color-mix(in srgb,var(--color-app-danger) 50%,var(--color-app-line))}}.border-\[var\(--color-app-line\)\]{border-color:var(--color-app-line)}.border-transparent{border-color:#0000}.bg-\[color-mix\(in_srgb\,var\(--color-app-accent\)_16\%\,var\(--color-app-surface-soft\)\)\]{background-color:#203e5f}@supports (color:color-mix(in lab,red,red)){.bg-\[color-mix\(in_srgb\,var\(--color-app-accent\)_16\%\,var\(--color-app-surface-soft\)\)\]{background-color:color-mix(in srgb,var(--color-app-accent) 16%,var(--color-app-surface-soft))}}.bg-\[color-mix\(in_srgb\,var\(--color-app-accent\)_18\%\,transparent\)\]{background-color:#66c8ff2e}@supports (color:color-mix(in lab,red,red)){.bg-\[color-mix\(in_srgb\,var\(--color-app-accent\)_18\%\,transparent\)\]{background-color:color-mix(in srgb,var(--color-app-accent) 18%,transparent)}}.bg-\[color-mix\(in_srgb\,var\(--color-app-danger\)_11\%\,var\(--color-app-surface\)\)\]{background-color:#2a283e}@supports (color:color-mix(in lab,red,red)){.bg-\[color-mix\(in_srgb\,var\(--color-app-danger\)_11\%\,var\(--color-app-surface\)\)\]{background-color:color-mix(in srgb,var(--color-app-danger) 11%,var(--color-app-surface))}}.bg-\[color-mix\(in_srgb\,var\(--color-app-surface-soft\)_72\%\,transparent\)\]{background-color:#132440b8}@supports (color:color-mix(in lab,red,red)){.bg-\[color-mix\(in_srgb\,var\(--color-app-surface-soft\)_72\%\,transparent\)\]{background-color:color-mix(in srgb,var(--color-app-surface-soft) 72%,transparent)}}.bg-\[color-mix\(in_srgb\,var\(--color-app-surface-soft\)_74\%\,transparent\)\]{background-color:#132440bd}@supports (color:color-mix(in lab,red,red)){.bg-\[color-mix\(in_srgb\,var\(--color-app-surface-soft\)_74\%\,transparent\)\]{background-color:color-mix(in srgb,var(--color-app-surface-soft) 74%,transparent)}}.bg-\[color-mix\(in_srgb\,var\(--color-app-surface-soft\)_75\%\,transparent\)\]{background-color:#132440bf}@supports (color:color-mix(in lab,red,red)){.bg-\[color-mix\(in_srgb\,var\(--color-app-surface-soft\)_75\%\,transparent\)\]{background-color:color-mix(in srgb,var(--color-app-surface-soft) 75%,transparent)}}.bg-\[color-mix\(in_srgb\,var\(--color-app-surface-soft\)_76\%\,transparent\)\]{background-color:#132440c2}@supports (color:color-mix(in lab,red,red)){.bg-\[color-mix\(in_srgb\,var\(--color-app-surface-soft\)_76\%\,transparent\)\]{background-color:color-mix(in srgb,var(--color-app-surface-soft) 76%,transparent)}}.bg-black\/55{background-color:#0000008c}@supports (color:color-mix(in lab,red,red)){.bg-black\/55{background-color:color-mix(in oklab,var(--color-black) 55%,transparent)}}.bg-\[linear-gradient\(132deg\,\#0f7bff_0\%\,\#43d2ff_55\%\,\#ff8f4b_100\%\)\]{background-image:linear-gradient(132deg,#0f7bff,#43d2ff 55%,#ff8f4b)}.bg-\[linear-gradient\(180deg\,color-mix\(in_srgb\,var\(--color-app-accent\)_14\%\,transparent\)_0\%\,transparent_100\%\)\]{background-image:linear-gradient(#66c8ff24,#0000)}@supports (color:color-mix(in lab,red,red)){.bg-\[linear-gradient\(180deg\,color-mix\(in_srgb\,var\(--color-app-accent\)_14\%\,transparent\)_0\%\,transparent_100\%\)\]{background-image:linear-gradient(180deg,color-mix(in srgb,var(--color-app-accent) 14%,transparent) 0%,transparent 100%)}}.bg-\[linear-gradient\(180deg\,var\(--color-app-surface\)_0\%\,var\(--color-app-surface-soft\)_100\%\)\]{background-image:linear-gradient(180deg,var(--color-app-surface) 0%,var(--color-app-surface-soft) 100%)}.bg-repeat{background-repeat:repeat}.mask-no-clip{-webkit-mask-clip:no-clip;mask-clip:no-clip}.mask-repeat{-webkit-mask-repeat:repeat;mask-repeat:repeat}.p-0{padding:calc(var(--spacing) * 0)}.p-1{padding:calc(var(--spacing) * 1)}.p-1\.5{padding:calc(var(--spacing) * 1.5)}.p-2{padding:calc(var(--spacing) * 2)}.p-3{padding:calc(var(--spacing) * 3)}.p-4{padding:calc(var(--spacing) * 4)}.px-2\.5{padding-inline:calc(var(--spacing) * 2.5)}.px-3{padding-inline:calc(var(--spacing) * 3)}.px-3\.5{padding-inline:calc(var(--spacing) * 3.5)}.px-4{padding-inline:calc(var(--spacing) * 4)}.py-2{padding-block:calc(var(--spacing) * 2)}.py-2\.5{padding-block:calc(var(--spacing) * 2.5)}.pt-2{padding-top:calc(var(--spacing) * 2)}.pt-4{padding-top:calc(var(--spacing) * 4)}.pb-3{padding-bottom:calc(var(--spacing) * 3)}.pb-24{padding-bottom:calc(var(--spacing) * 24)}.text-left{text-align:left}.text-base{font-size:var(--text-base);line-height:var(--tw-leading,var(--text-base--line-height))}.text-lg{font-size:var(--text-lg);line-height:var(--tw-leading,var(--text-lg--line-height))}.text-sm{font-size:var(--text-sm);line-height:var(--tw-leading,var(--text-sm--line-height))}.text-xs{font-size:var(--text-xs);line-height:var(--tw-leading,var(--text-xs--line-height))}.text-\[10px\]{font-size:10px}.text-\[11px\]{font-size:11px}.leading-tight{--tw-leading:var(--leading-tight);line-height:var(--leading-tight)}.font-extrabold{--tw-font-weight:var(--font-weight-extrabold);font-weight:var(--font-weight-extrabold)}.font-semibold{--tw-font-weight:var(--font-weight-semibold);font-weight:var(--font-weight-semibold)}.tracking-\[0\.08em\]{--tw-tracking:.08em;letter-spacing:.08em}.text-wrap{text-wrap:wrap}.break-all{word-break:break-all}.text-clip{text-overflow:clip}.text-ellipsis{text-overflow:ellipsis}.text-\[color-mix\(in_srgb\,var\(--color-app-danger\)_85\%\,var\(--color-app-text\)\)\]{color:#fd929d}@supports (color:color-mix(in lab,red,red)){.text-\[color-mix\(in_srgb\,var\(--color-app-danger\)_85\%\,var\(--color-app-text\)\)\]{color:color-mix(in srgb,var(--color-app-danger) 85%,var(--color-app-text))}}.text-\[var\(--color-app-accent\)\]{color:var(--color-app-accent)}.text-\[var\(--color-app-muted\)\]{color:var(--color-app-muted)}.text-\[var\(--color-app-text\)\]{color:var(--color-app-text)}.text-white{color:var(--color-white)}.capitalize{text-transform:capitalize}.lowercase{text-transform:lowercase}.normal-case{text-transform:none}.uppercase{text-transform:uppercase}.italic{font-style:italic}.not-italic{font-style:normal}.diagonal-fractions{--tw-numeric-fraction:diagonal-fractions;font-variant-numeric:var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,)}.lining-nums{--tw-numeric-figure:lining-nums;font-variant-numeric:var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,)}.oldstyle-nums{--tw-numeric-figure:oldstyle-nums;font-variant-numeric:var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,)}.ordinal{--tw-ordinal:ordinal;font-variant-numeric:var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,)}.proportional-nums{--tw-numeric-spacing:proportional-nums;font-variant-numeric:var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,)}.slashed-zero{--tw-slashed-zero:slashed-zero;font-variant-numeric:var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,)}.stacked-fractions{--tw-numeric-fraction:stacked-fractions;font-variant-numeric:var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,)}.tabular-nums{--tw-numeric-spacing:tabular-nums;font-variant-numeric:var(--tw-ordinal,) var(--tw-slashed-zero,) var(--tw-numeric-figure,) var(--tw-numeric-spacing,) var(--tw-numeric-fraction,)}.normal-nums{font-variant-numeric:normal}.line-through{text-decoration-line:line-through}.no-underline{text-decoration-line:none}.overline{text-decoration-line:overline}.underline{text-decoration-line:underline}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.subpixel-antialiased{-webkit-font-smoothing:auto;-moz-osx-font-smoothing:auto}.shadow{--tw-shadow:0 1px 3px 0 var(--tw-shadow-color,#0000001a), 0 1px 2px -1px var(--tw-shadow-color,#0000001a);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow)}.shadow-\[0_18px_28px_-18px_rgba\(35\,148\,246\,0\.9\)\]{--tw-shadow:0 18px 28px -18px var(--tw-shadow-color,#2394f6e6);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow)}.shadow-\[0_24px_36px_-30px_rgba\(3\,12\,24\,0\.85\)\]{--tw-shadow:0 24px 36px -30px var(--tw-shadow-color,#030c18d9);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow)}.shadow-\[0_26px_38px_-30px_rgba\(0\,0\,0\,0\.88\)\]{--tw-shadow:0 26px 38px -30px var(--tw-shadow-color,#000000e0);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow)}.inset-ring{--tw-inset-ring-shadow:inset 0 0 0 1px var(--tw-inset-ring-color,currentcolor);box-shadow:var(--tw-inset-shadow),var(--tw-inset-ring-shadow),var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow)}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.blur{--tw-blur:blur(8px);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.drop-shadow{--tw-drop-shadow-size:drop-shadow(0 1px 2px var(--tw-drop-shadow-color,#0000001a)) drop-shadow(0 1px 1px var(--tw-drop-shadow-color,#0000000f));--tw-drop-shadow:drop-shadow(0 1px 2px #0000001a) drop-shadow(0 1px 1px #0000000f);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.filter\!{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)!important}.backdrop-blur{--tw-backdrop-blur:blur(8px);-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.backdrop-blur-sm{--tw-backdrop-blur:blur(var(--blur-sm));-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.backdrop-grayscale{--tw-backdrop-grayscale:grayscale(100%);-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.backdrop-invert{--tw-backdrop-invert:invert(100%);-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.backdrop-sepia{--tw-backdrop-sepia:sepia(100%);-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.backdrop-filter{-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-all{transition-property:all;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-colors{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.transition-transform{transition-property:transform,translate,scale,rotate;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}.duration-150{--tw-duration:.15s;transition-duration:.15s}.duration-200{--tw-duration:.2s;transition-duration:.2s}.outline-none{--tw-outline-style:none;outline-style:none}.\[xml\:lang\]{xml:lang}:where(.divide-x-reverse>:not(:last-child)){--tw-divide-x-reverse:1}.ring-inset{--tw-ring-inset:inset}.group-data-\[state\=open\]\:rotate-180:is(:where(.group)[data-state=open] *){rotate:180deg}@media(hover:hover){.hover\:border-\[color-mix\(in_srgb\,var\(--color-app-accent\)_52\%\,var\(--color-app-line\)\)\]:hover{border-color:#4785b4}@supports (color:color-mix(in lab,red,red)){.hover\:border-\[color-mix\(in_srgb\,var\(--color-app-accent\)_52\%\,var\(--color-app-line\)\)\]:hover{border-color:color-mix(in srgb,var(--color-app-accent) 52%,var(--color-app-line))}}.hover\:border-\[color-mix\(in_srgb\,var\(--color-app-accent\)_75\%\,var\(--color-app-line\)\)\]:hover{border-color:#56a5d8}@supports (color:color-mix(in lab,red,red)){.hover\:border-\[color-mix\(in_srgb\,var\(--color-app-accent\)_75\%\,var\(--color-app-line\)\)\]:hover{border-color:color-mix(in srgb,var(--color-app-accent) 75%,var(--color-app-line))}}.hover\:border-\[var\(--color-app-line\)\]:hover{border-color:var(--color-app-line)}.hover\:text-\[var\(--color-app-text\)\]:hover{color:var(--color-app-text)}}.disabled\:cursor-not-allowed:disabled{cursor:not-allowed}.disabled\:opacity-60:disabled{opacity:.6}.data-\[state\=active\]\:bg-\[color-mix\(in_srgb\,var\(--color-app-accent\)_16\%\,var\(--color-app-surface-soft\)\)\][data-state=active]{background-color:#203e5f}@supports (color:color-mix(in lab,red,red)){.data-\[state\=active\]\:bg-\[color-mix\(in_srgb\,var\(--color-app-accent\)_16\%\,var\(--color-app-surface-soft\)\)\][data-state=active]{background-color:color-mix(in srgb,var(--color-app-accent) 16%,var(--color-app-surface-soft))}}.data-\[state\=active\]\:text-\[var\(--color-app-accent\)\][data-state=active]{color:var(--color-app-accent)}.data-\[state\=closed\]\:animate-\[accordion-up_220ms_ease\][data-state=closed]{animation:.22s accordion-up}.data-\[state\=open\]\:animate-\[accordion-down_220ms_ease\][data-state=open]{animation:.22s accordion-down}@media(min-width:40rem){.sm\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}}@media(min-width:64rem){.lg\:block{display:block}.lg\:hidden{display:none}.lg\:grid-cols-\[270px_minmax\(0\,1fr\)_320px\]{grid-template-columns:270px minmax(0,1fr) 320px}.lg\:px-6{padding-inline:calc(var(--spacing) * 6)}.lg\:pt-6{padding-top:calc(var(--spacing) * 6)}.lg\:pb-6{padding-bottom:calc(var(--spacing) * 6)}}.glass{background-color:#ffffff0d}@supports (color:color-mix(in lab,red,red)){.glass{background-color:color-mix(in oklab,var(--color-white) 5%,transparent)}}.glass{--tw-backdrop-blur:blur(var(--blur-md));-webkit-backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,);backdrop-filter:var(--tw-backdrop-blur,) var(--tw-backdrop-brightness,) var(--tw-backdrop-contrast,) var(--tw-backdrop-grayscale,) var(--tw-backdrop-hue-rotate,) var(--tw-backdrop-invert,) var(--tw-backdrop-opacity,) var(--tw-backdrop-saturate,) var(--tw-backdrop-sepia,)}}:root[data-theme=midnight]{--color-app-bg:#0a0b12;--color-app-surface:#131722;--color-app-surface-soft:#1a2131;--color-app-line:#2b3346;--color-app-text:#f3f5fb;--color-app-muted:#aab2c4;--color-app-accent:#a8b7ff;--color-app-accent-soft:#242d48;--color-app-accent-ink:#111a42;--color-app-danger:#ff9595;--color-app-good:#6ad0a1}:root[data-theme=daylight]{--color-app-bg:#edf3ff;--color-app-surface:#fff;--color-app-surface-soft:#f2f6ff;--color-app-line:#cfdef8;--color-app-text:#111c34;--color-app-muted:#56698f;--color-app-accent:#1b70dc;--color-app-accent-soft:#d9e8ff;--color-app-accent-ink:#fff;--color-app-danger:#de4d5f;--color-app-good:#198754}:root[data-theme=contrast]{--color-app-bg:#000;--color-app-surface:#000;--color-app-surface-soft:#0a0a0a;--color-app-line:#f7f7f7;--color-app-text:#fff;--color-app-muted:#f0f0f0;--color-app-accent:#00e5ff;--color-app-accent-soft:#003640;--color-app-accent-ink:#001114;--color-app-danger:#ff4d5b;--color-app-good:#38ff8b}@media(prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:1ms!important;animation-duration:1ms!important;animation-iteration-count:1!important}}@keyframes ui-rise{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes accordion-down{0%{height:0}to{height:var(--radix-accordion-content-height)}}@keyframes accordion-up{0%{height:var(--radix-accordion-content-height)}to{height:0}}@media(max-width:920px){.stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.badge-grid,.section-impact-grid,.category-browser,.explore-controls{grid-template-columns:repeat(1,minmax(0,1fr))}.question-rich-text{font-size:var(--text-base);line-height:var(--tw-leading,var(--text-base--line-height))}}@property --tw-scale-x{syntax:"*";inherits:false;initial-value:1}@property --tw-scale-y{syntax:"*";inherits:false;initial-value:1}@property --tw-scale-z{syntax:"*";inherits:false;initial-value:1}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-pan-x{syntax:"*";inherits:false}@property --tw-pan-y{syntax:"*";inherits:false}@property --tw-pinch-zoom{syntax:"*";inherits:false}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-space-x-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-divide-x-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-divide-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-ordinal{syntax:"*";inherits:false}@property --tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@property --tw-duration{syntax:"*";inherits:false}