:root{--bg:#f2f2f7;--bg-elevated:#fff;--bg-grouped:#f2f2f7;--card:#fff;--card-2:#f8f8fa;--separator:#3c3c432e;--separator-strong:#3c3c434a;--label:#1c1c1e;--label-secondary:#3c3c4399;--label-tertiary:#3c3c434d;--accent:#007aff;--accent-weak:#007aff1f;--green:#34c759;--green-weak:#34c75926;--red:#ff3b30;--red-weak:#ff3b3024;--orange:#ff9500;--orange-weak:#ff950029;--purple:#af52de;--indigo:#5856d6;--teal:#30b0c7;--yellow:#fc0;--pink:#ff2d55;--gray:#8e8e93;--eval-great:#309e66;--eval-good:#3370d1;--eval-avg:#d6a330;--eval-poor:#c74a44;--eval-fav:#8063c4;--eval-none:#a8a8ad;--radius:14px;--radius-lg:20px;--radius-sm:10px;--shadow:0 1px 3px #0000000f, 0 8px 24px #0000000d;--font:-apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Segoe UI", Meiryo, system-ui, sans-serif;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#000;--bg-elevated:#1c1c1e;--bg-grouped:#000;--card:#1c1c1e;--card-2:#2c2c2e;--separator:#54545880;--separator-strong:#545458a6;--label:#fff;--label-secondary:#ebebf599;--label-tertiary:#ebebf54d;--accent:#0a84ff;--accent-weak:#0a84ff33;--green:#30d158;--green-weak:#30d15833;--red:#ff453a;--red-weak:#ff453a33;--orange:#ff9f0a;--orange-weak:#ff9f0a33;--purple:#bf5af2;--indigo:#5e5ce6;--teal:#40c8e0;--eval-great:#3cbf7e;--eval-good:#4d8df0;--eval-avg:#e6b34a;--eval-poor:#e0605a;--eval-fav:#9d7fe0;--eval-none:#8e8e93;--shadow:0 1px 3px #0006, 0 8px 24px #0000004d}}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{height:100%;margin:0}body{font-family:var(--font);background:var(--bg);background-image:linear-gradient(180deg, color-mix(in srgb, var(--indigo) 7%, transparent), transparent 240px);color:var(--label);-webkit-font-smoothing:antialiased;overscroll-behavior-y:none;touch-action:manipulation;background-repeat:no-repeat;background-attachment:fixed;font-size:16px;line-height:1.4}button{cursor:pointer;font-family:inherit}input,textarea,select{font-family:inherit;font-size:16px}a{color:var(--accent);text-decoration:none}h1,h2,h3,h4{margin:0}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:var(--label-tertiary);border-radius:4px}.app-shell{max-width:900px;min-height:100%;padding-bottom:env(safe-area-inset-bottom);flex-direction:column;margin:0 auto;display:flex}.page{flex:1;padding:12px 16px 32px}.page-narrow{width:100%;max-width:760px;margin:0 auto}.card{background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:16px}.card+.card{margin-top:12px}.section-title{color:var(--label);margin:20px 4px 8px;font-size:15px;font-weight:700}.section-sub{color:var(--label-secondary);margin:2px 4px 10px;font-size:12px}.btn{border-radius:var(--radius-sm);background:var(--card-2);color:var(--label);border:none;justify-content:center;align-items:center;gap:6px;padding:10px 16px;font-size:15px;font-weight:600;transition:opacity .12s,transform 50ms;display:inline-flex}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.4;pointer-events:none}.btn-primary{background:var(--accent);color:#fff}.btn-green{background:var(--green);color:#fff}.btn-danger{background:var(--red);color:#fff}.btn-ghost{color:var(--accent);background:0 0}.btn-sm{padding:6px 12px;font-size:13px}.btn-block{width:100%}.chip{background:var(--card-2);color:var(--label-secondary);white-space:nowrap;border-radius:999px;align-items:center;gap:4px;padding:4px 10px;font-size:12px;font-weight:600;display:inline-flex}.chip-accent{background:var(--accent-weak);color:var(--accent)}.field{border:1px solid var(--separator);background:var(--bg-elevated);border-radius:var(--radius-sm);width:100%;color:var(--label);outline:none;padding:11px 13px}.field:focus{border-color:var(--accent)}textarea.field{resize:vertical;line-height:1.5}.row{align-items:center;gap:10px;display:flex}.row-between{justify-content:space-between}.wrap{flex-wrap:wrap}.spacer{flex:1}.muted{color:var(--label-secondary)}.tiny{font-size:12px}.center{text-align:center}.stack{flex-direction:column;gap:10px;display:flex}.empty-state{text-align:center;color:var(--label-secondary);padding:48px 20px}.empty-state .es-title{color:var(--label);margin-bottom:6px;font-weight:700}.list{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.list-row{border-bottom:.5px solid var(--separator);text-align:left;width:100%;color:var(--label);background:0 0;border-top:none;border-left:none;border-right:none;align-items:center;gap:12px;padding:13px 16px;font-size:15px;display:flex}.list-row:last-child{border-bottom:none}.list-row:active{background:var(--card-2)}.hidden{display:none!important}.topbar{z-index:20;padding:calc(env(safe-area-inset-top) + 6px) 12px 8px;background:color-mix(in srgb, var(--bg) 82%, transparent);-webkit-backdrop-filter:saturate(180%)blur(20px);border-bottom:.5px solid var(--separator);align-items:center;gap:6px;display:flex;position:sticky;top:0}.tab-chip{min-height:32px;color:var(--label-secondary);background:var(--card-2);border:none;border-radius:999px;align-items:center;gap:5px;padding:0 12px;font-size:13px;font-weight:700;display:inline-flex}.tab-chip.active{color:#fff;background:var(--accent)}.tab-chip .ico{font-size:14px}.topbar .gear{background:var(--card-2);width:32px;height:32px;color:var(--label-secondary);border:none;border-radius:999px;font-size:15px}.nav-header{z-index:15;padding:calc(env(safe-area-inset-top) + 8px) 8px 8px;background:color-mix(in srgb, var(--bg) 82%, transparent);-webkit-backdrop-filter:saturate(180%)blur(20px);border-bottom:.5px solid var(--separator);grid-template-columns:1fr auto 1fr;align-items:center;gap:8px;display:grid;position:sticky;top:0}.nav-title{text-align:center;white-space:nowrap;text-overflow:ellipsis;font-size:16px;font-weight:700;overflow:hidden}.nav-back{white-space:nowrap;justify-self:start}.nav-right{justify-self:end;gap:6px;display:flex}.sheet-backdrop{z-index:100;background:#00000059;justify-content:center;align-items:flex-end;animation:.15s fade;display:flex;position:fixed;inset:0}@keyframes fade{0%{opacity:0}}.sheet{background:var(--bg);border-radius:16px 16px 0 0;flex-direction:column;width:100%;max-width:620px;max-height:92vh;animation:.22s cubic-bezier(.2,.9,.3,1) slideup;display:flex}@media (width>=640px){.sheet-backdrop{align-items:center}.sheet{border-radius:16px}}@keyframes slideup{0%{opacity:.6;transform:translateY(30px)}}.sheet-header{border-bottom:.5px solid var(--separator);grid-template-columns:1fr auto 1fr;align-items:center;padding:12px 12px 8px;display:grid}.sheet-title{text-align:center;white-space:nowrap;font-weight:700}.sheet-header .btn-ghost{justify-self:start}.sheet-actions{justify-self:end;gap:6px;display:flex}.sheet-body{-webkit-overflow-scrolling:touch;padding:16px;overflow-y:auto}.alert{background:var(--bg-elevated);width:min(88vw,340px);box-shadow:var(--shadow);border-radius:16px;flex-direction:column;align-self:center;gap:12px;margin:auto;padding:20px;display:flex}.sheet-backdrop:has(.alert){align-items:center}.alert-title{text-align:center;font-weight:700}.alert-msg{color:var(--label-secondary);text-align:center;font-size:13px}.alert-actions{gap:8px;margin-top:4px;display:flex}.zoom-overlay{z-index:200;touch-action:none;background:#000000eb;flex-direction:column;justify-content:center;align-items:center;display:flex;position:fixed;inset:0;overflow:hidden}.zoom-stage{will-change:transform;transition:transform 80ms linear}.zoom-img{object-fit:contain;-webkit-user-drag:none;-webkit-user-select:none;user-select:none;pointer-events:none;max-width:96vw;max-height:86vh;display:block}.zoom-toolbar{top:calc(14px + env(safe-area-inset-top));gap:8px;display:flex;position:fixed;right:14px}.zoom-hint{bottom:calc(20px + env(safe-area-inset-bottom));color:#ffffffb3;font-size:12px;position:fixed}.toast{left:50%;bottom:calc(30px + env(safe-area-inset-bottom));z-index:150;color:#fff;background:#000000d1;border-radius:999px;padding:10px 18px;font-size:13px;font-weight:600;animation:.2s fade;position:fixed;transform:translate(-50%)}@media (prefers-color-scheme:dark){.toast{background:#ffffff29}}.thumb{object-fit:cover;border-radius:12px}.popover{z-index:31;background:var(--bg-elevated);box-shadow:var(--shadow);border:.5px solid var(--separator);border-radius:12px;min-width:160px;position:absolute;top:calc(100% + 4px);right:0;overflow:hidden}.popover-item{text-align:left;width:100%;color:var(--label);border:none;border-bottom:.5px solid var(--separator);background:0 0;padding:11px 14px;font-size:15px;display:block}.popover-item:last-child{border-bottom:none}.popover-item:active{background:var(--card-2)}.popover-item.danger{color:var(--red)}.tile-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;display:grid}.action-tile{text-align:left;background:var(--card);box-shadow:var(--shadow);color:var(--label);border:none;border-radius:14px;flex-direction:column;gap:4px;padding:14px;display:flex}.action-tile .t-title{font-size:15px;font-weight:700}.action-tile .t-sub{color:var(--label-secondary);font-size:12px}.action-tile:disabled{opacity:.45}.metric-grid{grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;display:grid}.metric{background:var(--card);box-shadow:var(--shadow);border-radius:14px;padding:14px}.metric .m-val{font-size:22px;font-weight:800}.metric .m-label{color:var(--label-secondary);margin-top:2px;font-size:12px}.opt{text-align:left;border:1.5px solid var(--separator);background:var(--card);width:100%;color:var(--label);border-radius:14px;align-items:flex-start;gap:10px;padding:13px 14px;font-size:15px;line-height:1.4;display:flex}.opt .badge{background:var(--card-2);width:26px;height:26px;color:var(--label-secondary);border-radius:999px;flex:none;justify-content:center;align-items:center;font-size:13px;font-weight:700;display:flex}.opt.selected{border-color:var(--accent);background:var(--accent-weak)}.opt.selected .badge{background:var(--accent);color:#fff}.opt.correct{border-color:var(--green);background:var(--green-weak)}.opt.correct .badge{background:var(--green);color:#fff}.opt.correct-missed{border-color:var(--green)}.opt.correct-missed .badge{color:var(--green);border:1.5px solid var(--green);background:0 0}.opt.wrong{border-color:var(--red);background:var(--red-weak)}.opt.wrong .badge{background:var(--red);color:#fff}.opt.dimmed{opacity:.55}.result-banner{border-radius:14px;align-items:center;gap:10px;padding:14px 16px;font-weight:700;display:flex}.result-banner.ok{background:var(--green-weak);color:var(--green)}.result-banner.ng{background:var(--red-weak);color:var(--red)}.segmented{background:var(--card-2);border-radius:10px;gap:2px;padding:2px;display:flex}.segmented button{color:var(--label-secondary);background:0 0;border:none;border-radius:8px;flex:1;padding:7px 10px;font-size:13px;font-weight:600}.bottom-bar{padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:color-mix(in srgb, var(--bg) 85%, transparent);-webkit-backdrop-filter:blur(20px);border-top:.5px solid var(--separator);margin:0 -16px;position:sticky;bottom:0}.md h1{margin:12px 0 8px;font-size:22px;font-weight:800}.md h2{margin:12px 0 6px;font-size:19px;font-weight:700}.md h3{margin:10px 0 4px;font-size:17px;font-weight:600}.md p{margin:8px 0;line-height:1.7}.md ul,.md ol{margin:8px 0;padding-left:22px;line-height:1.7}.md blockquote{border-left:4px solid var(--accent);background:var(--accent-weak);border-radius:8px;margin:8px 0;padding:8px 12px}.md code{background:var(--card-2);border-radius:5px;padding:1px 5px;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:.92em}.md pre{background:var(--card-2);border-radius:12px;padding:12px;overflow-x:auto}.md pre code{background:0 0;padding:0}.md hr{border:none;border-top:1px solid var(--separator);margin:12px 0}.flip-scene{perspective:1400px}.flip-card{transform-style:preserve-3d;min-height:260px;transition:transform .5s cubic-bezier(.2,.8,.3,1);position:relative}.flip-card.flipped{transform:rotateY(180deg)}.flip-face{backface-visibility:hidden;background:var(--card);box-shadow:var(--shadow);text-align:center;border-radius:18px;flex-direction:column;justify-content:center;align-items:center;padding:24px;display:flex;position:absolute;inset:0}.flip-face.back{transform:rotateY(180deg)}.pbar{background:var(--card-2);border-radius:999px;height:8px;overflow:hidden}.pbar>div{background:var(--accent);border-radius:999px;height:100%;transition:width .3s}.heat-grid{grid-template-rows:repeat(7,1fr);grid-auto-flow:column;gap:3px;display:grid}.heat-cell{background:var(--card-2);border-radius:3px;width:13px;height:13px}.opt-badge{background:var(--accent-weak);width:26px;height:26px;color:var(--accent);border-radius:999px;flex:none;justify-content:center;align-items:center;margin-top:8px;font-size:13px;font-weight:700;display:inline-flex}.eval-picker{flex-wrap:wrap;gap:6px;display:flex}.eval-btn{border:1.5px solid var(--separator);background:var(--card);min-width:40px;height:40px;color:var(--label);border-radius:10px;font-size:18px;font-weight:700}.eval-btn.on{border-width:2px}.grade-btn{color:#fff;border:none;border-radius:12px;flex-direction:column;flex:1;align-items:center;gap:3px;padding:12px 6px;font-size:14px;font-weight:700;display:flex}.grade-btn .sub{opacity:.9;font-size:11px;font-weight:500}.qnav{scrollbar-width:none;gap:8px;padding:6px 2px;display:flex;overflow-x:auto}.qnav::-webkit-scrollbar{display:none}.qnav-btn{border:1.5px solid var(--separator-strong);background:var(--card);width:36px;height:36px;color:var(--label-secondary);cursor:pointer;border-radius:50%;flex:none;font-size:13px;font-weight:700;transition:transform .15s,border-color .15s,background .15s}.qnav-btn.done{background:var(--accent-weak);border-color:var(--accent);color:var(--accent)}.qnav-btn.ok{background:var(--green-weak);border-color:var(--green);color:var(--green)}.qnav-btn.ng{background:var(--red-weak);border-color:var(--red);color:var(--red)}.qnav-btn.blank{background:var(--card-2);border-color:var(--separator);color:var(--label-tertiary)}.qnav-btn.current{box-shadow:0 0 0 2.5px var(--accent);color:var(--label);border-color:#0000;transform:scale(1.12)}.gauge{display:inline-block;position:relative}.gauge-center{text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.spectrum{background:var(--card-2);border-radius:999px;width:100%;display:flex;overflow:hidden}.chip-green{background:var(--green-weak);color:var(--green)}.chip-red{background:var(--red-weak);color:var(--red)}.chip-btn{cursor:pointer;font:inherit;border:none;font-size:12px;font-weight:600}.chip-btn.on{background:var(--accent);color:#fff}.pbar>div.pbar-ok{background:var(--green)}.pbar>div.pbar-warn{background:var(--orange)}.hero-card{background:linear-gradient(135deg, var(--indigo), var(--teal));color:#fff;border:none}.hero-chip{color:#fff;cursor:pointer;font:inherit;background:#ffffff38;border:none;font-size:12px;font-weight:600}.hero-cat{color:#fff;border:none}.grid-card{text-align:left;cursor:pointer;font:inherit;color:inherit;position:relative;overflow:hidden}.grid-card-accent{width:4px;position:absolute;top:0;bottom:0;left:0}.action-tile-sm{cursor:pointer;font:inherit;color:inherit;flex:1;padding:10px 6px}.dot-matrix{flex-wrap:wrap;gap:3px;max-width:100%;display:flex}.dot{cursor:pointer;border:none;border-radius:3px;width:12px;height:12px;padding:0}.list-row-accent{transition:border-color .15s}button.card{font:inherit;color:inherit;border:none}button.card:active,.grid-card:active,.action-tile-sm:active{transition:transform 80ms;transform:scale(.985)}.print-doc{color:#000;font-size:var(--pdf-body,10.5pt);line-height:var(--pdf-lh,1.33);width:531.2pt;max-width:calc(100vw - 24px);box-shadow:var(--shadow);background:#fff;border-radius:8px;margin:14px auto 48px;padding:22px 0;display:block}@media print{.no-print,.topbar,.toast{display:none!important}html,body,#root,.app-shell{height:auto!important;min-height:0!important}body,.app-shell,.page{background:#fff!important;max-width:none!important;margin:0!important;padding:0!important}.print-doc{width:auto;max-width:none;box-shadow:none;border-radius:0;margin:0;padding:0;display:block}}@page{margin:32pt}.pdf-header{margin-bottom:var(--pdf-block-gap,14pt);border-bottom:.6pt solid #999;justify-content:space-between;align-items:baseline;gap:8pt;padding-bottom:4pt;display:flex}.pdf-doc-title{font-size:13pt;font-weight:700}.pdf-doc-meta{color:#595959;white-space:nowrap;font-size:9pt}.pdf-q{break-inside:avoid;page-break-inside:avoid;-webkit-column-break-inside:avoid;padding:var(--pdf-block-gap,14pt) 0}.pdf-q+.pdf-q{border-top:.6pt solid #999}.pdf-q.page-start{break-before:page;page-break-before:always;border-top:none}.pdf-title{white-space:pre-wrap;orphans:3;widows:3}.pdf-num{font-weight:700;font-size:var(--pdf-num,11.5pt)}.pdf-body{white-space:pre-wrap;margin-top:var(--pdf-section-gap,8pt);orphans:3;widows:3}.pdf-title+img,.pdf-body+img,.pdf-q>img,.pdf-options{margin-top:var(--pdf-section-gap,8pt)}.pdf-options.inline .pdf-option{white-space:nowrap;margin-right:18pt;display:inline-block}.pdf-options.inline .pdf-option:last-child{margin-right:0}.pdf-options.twocol{column-gap:16pt;row-gap:var(--pdf-row-gap,5pt);break-inside:avoid;page-break-inside:avoid;grid-template-columns:1fr 1fr;display:grid}.pdf-options.twocol .pdf-option{white-space:nowrap;overflow:hidden}.pdf-options.vertical .pdf-option{padding-left:var(--pdf-label-w,13pt);text-indent:calc(-1 * var(--pdf-label-w,13pt));break-inside:avoid;page-break-inside:avoid;display:block}.pdf-options.vertical .pdf-option+.pdf-option{margin-top:var(--pdf-row-gap,5pt)}.pdf-opt-label{width:var(--pdf-label-w,13pt);text-indent:0;display:inline-block}.pdf-opt-body{text-indent:0}.pdf-options .pdf-option img{margin:3pt 0 0 var(--pdf-label-w,13pt)}.pdf-image-columns{columns:2;column-gap:14pt}.pdf-img-item{break-inside:avoid;page-break-inside:avoid;padding:8pt 0}.pdf-img-item:not(.first){border-top:.6pt solid #999}.pdf-img-label{font-weight:700;font-size:calc(var(--pdf-body,10.5pt) + 2pt);margin-bottom:4pt}.promo-card{border-radius:var(--radius-lg);color:#fff;background:linear-gradient(120deg,#7c3aed,#db2777 85%);border:none;align-items:center;gap:12px;padding:14px 16px;text-decoration:none;transition:transform .12s,box-shadow .12s;display:flex;box-shadow:0 4px 16px #7c3aed59}.promo-card:hover{transform:translateY(-1px);box-shadow:0 6px 20px #7c3aed73}.promo-card:active{transform:scale(.985)}.promo-icon{flex:none;font-size:26px}.promo-body{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.promo-title{font-size:15px;font-weight:800}.promo-sub{opacity:.92;font-size:12px;line-height:1.45}.promo-release{opacity:.8;font-size:11px;line-height:1.45}.promo-cta{color:#7c3aed;white-space:nowrap;background:#fffffff2;border-radius:999px;flex:none;padding:8px 14px;font-size:13px;font-weight:800}.mdx-hero{border-radius:var(--radius-lg);color:#fff;background:linear-gradient(135deg,#30408c,#1a7585);flex-direction:column;gap:12px;padding:20px;display:flex;position:relative;overflow:hidden}.mdx-hero-bg{opacity:.12;pointer-events:none;font-size:110px;position:absolute;top:-18px;right:-6px;transform:rotate(-14deg)}.mdx-hero-chip{color:#fff;cursor:default;background:#ffffff29;border:none;border-radius:999px;padding:4px 9px;font-size:11px;font-weight:800}.mdx-hero-title{font-size:30px;font-weight:900}.mdx-hero-desc{opacity:.88;font-size:12px;line-height:1.6}.mdx-hero-stat{text-align:center;background:#ffffff1f;border-radius:12px;flex-direction:column;flex:1;gap:2px;padding:9px 4px;display:flex}.mdx-hero-stat b{white-space:nowrap;font-size:15px;font-weight:900}.mdx-hero-stat span{opacity:.7;font-size:9px;font-weight:600}.mdx-sec-icon{color:#fff;border-radius:9px;flex:none;justify-content:center;align-items:center;width:30px;height:30px;font-size:14px;display:inline-flex}.mdx-tl-dot{border-radius:50%;flex:none;justify-content:center;align-items:center;width:28px;height:28px;font-size:12px;font-weight:700;display:inline-flex}.mdx-tl-line{background:var(--separator);flex:1;width:2px;min-height:18px}.mdx-gate-badge{color:#fff;border-radius:12px;flex-direction:column;flex:none;justify-content:center;align-items:center;width:40px;height:40px;display:inline-flex}.mdx-gate-bar{border-radius:999px;height:16px;margin-top:8px;overflow:hidden}.mdx-gate-bar>div{border-radius:999px;justify-content:flex-end;align-items:center;min-width:10px;height:100%;transition:width .9s ease-out;display:flex}.mdx-gate-bar span{color:#fff;padding-right:6px;font-size:9px;font-weight:800}.mdx-gate-dot{background:var(--card-2);min-width:24px;min-height:24px;color:var(--label-secondary);border-radius:999px;justify-content:center;align-items:center;padding:0 6px;font-size:11px;font-weight:800;display:inline-flex}.mdx-gate-dot.out{color:#fff;padding:0 9px}.mdx-bar{font:inherit;cursor:pointer;background:0 0;border:none;flex-direction:column;flex:1;align-items:center;gap:5px;padding:0;display:flex}.mdx-history-row{cursor:pointer;align-items:center;gap:12px;padding:11px 14px;display:flex}.mdx-round-pill{white-space:nowrap;border-radius:999px;flex:none;padding:5px 9px;font-size:12px;font-weight:800}.pdf-viewer{padding:12px 8px calc(70px + env(safe-area-inset-bottom));flex-direction:column;align-items:center;gap:12px;min-height:60vh;display:flex}.pdf-page{box-shadow:var(--shadow);background:#fff;border-radius:4px;min-width:200px;max-width:100%;min-height:60px;overflow:hidden}.pdf-page canvas{max-width:100%;display:block}.pdf-pagebar{left:50%;bottom:calc(16px + env(safe-area-inset-bottom));z-index:40;background:color-mix(in srgb, var(--card) 88%, transparent);-webkit-backdrop-filter:saturate(180%)blur(16px);box-shadow:var(--shadow);border-radius:999px;align-items:center;gap:12px;padding:6px 12px;display:flex;position:fixed;transform:translate(-50%)}:root{--rail-width:236px;--header-height:76px}:root,:root[data-theme=light]{--bg:#f4f7f9;--bg-elevated:#fff;--bg-grouped:#f4f7f9;--card:#fff;--card-2:#f5f8fa;--label:#193144;--label-secondary:#647787;--label-tertiary:#899aa7;--accent:#087f8c;--accent-weak:#e5f4f3;--green:#25855d;--green-weak:#e5f3eb;--red:#c74956;--red-weak:#fff0f0;--orange:#c08729;--orange-weak:#fcf4e5;--separator:#e4ebef;--separator-strong:#ccd8df;--teal:#148b96;--indigo:#4c729f;--radius:16px;--radius-lg:22px;--shadow:0 3px 14px #233e5105;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}:root[data-theme=dark]{--bg:#111d27;--bg-elevated:#182732;--bg-grouped:#111d27;--card:#192b37;--card-2:#203440;--label:#edf4f7;--label-secondary:#a3b6c3;--label-tertiary:#7692a2;--accent:#63d1cc;--accent-weak:#213f45;--green:#79c89c;--green-weak:#203d32;--red:#fa969e;--red-weak:#402d36;--orange:#e0b367;--orange-weak:#39382b;--separator:#2a414f;--separator-strong:#43606e;--teal:#71c4cd;--indigo:#92b5e0;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}html{scroll-behavior:smooth;scroll-padding-top:90px}body{background:var(--bg);letter-spacing:.012em;background-image:none;font-size:15px;line-height:1.65}button,input,select,textarea{color:inherit}button{-webkit-user-select:none;user-select:none}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid color-mix(in srgb, var(--accent) 50%, transparent);outline-offset:3px}button:disabled{cursor:not-allowed}svg{vertical-align:middle;flex-shrink:0}a{text-underline-offset:3px}::selection{color:#173948;background:#a3dcd8}.skip-link{z-index:500;background:var(--card);border:2px solid var(--accent);border-radius:10px;padding:12px 20px;position:fixed;top:-80px;left:20px}.skip-link:focus{top:10px}.workspace{min-height:100dvh}.side-rail{z-index:50;width:var(--rail-width);background:var(--card);border-right:1px solid var(--separator);flex-direction:column;padding:31px 18px 20px;display:flex;position:fixed;top:0;bottom:0;left:0;overflow-y:auto}.brand-link{margin:0 8px 34px;display:block}.brand{align-items:center;gap:11px;display:inline-flex}.brand-mark{object-fit:cover;background:0 0;border-radius:10px;flex-shrink:0;width:40px;height:40px;display:block}.brand-word{color:var(--label);letter-spacing:-.04em;font-size:19px;font-weight:800;line-height:1.3}.brand-word small{color:var(--label-secondary);letter-spacing:.045em;margin-top:6px;font-size:9px;font-weight:500;display:block}.exam-switch{border:1px solid var(--separator);background:var(--card-2);text-align:left;border-radius:11px;align-items:center;gap:10px;width:100%;margin-bottom:28px;padding:12px 10px;display:flex}.exam-switch>span:nth-child(2){flex:1;min-width:0}.exam-switch strong{font-size:13px;line-height:1.4;display:block}.exam-switch small{color:var(--label-secondary);font-size:9px}.exam-switch-icon{color:var(--accent)}.rail-section-label{letter-spacing:.15em;color:var(--label-tertiary);padding:0 13px 10px;font-size:9px;font-weight:700}.rail-link{color:var(--label-secondary);text-align:left;background:0 0;border:0;border-radius:10px;align-items:center;gap:12px;width:100%;margin-bottom:5px;padding:13px 14px;font-size:13px;font-weight:550;transition:background .15s,color .15s;display:flex}.rail-link:hover{background:var(--card-2);color:var(--label);text-decoration:none}.rail-link.is-active{background:var(--accent-weak);color:var(--accent);font-weight:750}.rail-chevron{opacity:0;margin-left:auto}.rail-link.is-active .rail-chevron{opacity:1}.rail-bottom{margin-top:auto;padding-top:60px}.rail-goal{border-bottom:1px solid var(--separator);margin-bottom:16px;padding:16px 12px}.rail-goal>span{justify-content:space-between;align-items:center;font-size:10px;display:flex}.rail-goal strong{font-variant-numeric:tabular-nums;font-size:16px}.rail-goal small{color:var(--label-secondary);font-size:10px;font-weight:400}.rail-goal .pbar{height:5px;margin:9px 0 4px}.rail-local{color:var(--label-tertiary);justify-content:center;align-items:center;gap:5px;margin-top:15px;font-size:9px;display:flex}.workspace-body{margin-left:var(--rail-width);min-width:0}.workspace-header{height:var(--header-height);border-bottom:1px solid var(--separator);background:color-mix(in srgb, var(--card) 95%, transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);z-index:40;align-items:center;gap:16px;padding:0 36px;display:flex;position:sticky;top:0}.workspace-breadcrumb{white-space:nowrap;align-items:center;gap:13px;font-size:12px;display:flex}.workspace-breadcrumb>span{color:var(--label-secondary)}.workspace-breadcrumb>svg{color:var(--label-tertiary)}.workspace-breadcrumb strong{font-weight:600}.header-tools{align-items:center;gap:15px;margin-left:auto;display:flex}.header-search{border:1px solid var(--separator);color:var(--label-secondary);background:var(--bg);border-radius:9px;align-items:center;gap:9px;min-height:38px;padding:8px 12px;font-size:11px;display:flex}.header-search kbd{color:var(--label-tertiary);border:1px solid var(--separator);border-radius:4px;margin-left:35px;padding:0 5px;font-size:10px}.avatar-button{border:1px solid var(--separator);background:var(--card);width:37px;height:37px;color:var(--label-secondary);border-radius:50%;place-items:center;display:grid}.mobile-brand,.mobile-nav{display:none}.workspace-main{max-width:1540px;min-height:calc(100dvh - 143px);margin:0 auto}.workspace-main>.page,.workspace-main .main-tab-page{padding:32px 36px 20px}.workspace-main .page-narrow{max-width:100%;margin:0}.workspace-footer{color:var(--label-tertiary);justify-content:space-between;align-items:center;max-width:1540px;margin:auto;padding:22px 36px;font-size:10px;display:flex}.workspace-footer a{color:var(--label-secondary);align-items:center;gap:4px;display:flex}.offline-banner{background:var(--orange-weak);color:var(--orange);align-items:center;gap:8px;padding:9px 36px;font-size:12px;display:flex}.card{border:1px solid var(--separator);box-shadow:var(--shadow);border-radius:15px;padding:22px}.btn{min-height:42px;box-shadow:none;border-radius:10px;justify-content:center;align-items:center;gap:7px;padding:10px 17px;font-size:13px;font-weight:650;line-height:1.5;transition:background .15s,border-color .15s,transform .15s;display:inline-flex}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}[data-theme=dark] .btn-primary{color:#143239}.btn:hover:not(:disabled){filter:brightness(.97)}.btn:active:not(:disabled){transform:translateY(1px)}.btn-sm{min-height:34px;padding:6px 11px;font-size:12px}.btn-block{display:flex}.btn-ghost{border-color:#0000}.field{border-color:var(--separator-strong);background:var(--card);border-radius:9px;padding:11px 12px;line-height:1.5}.field-label{flex-direction:column;gap:7px;font-size:13px;font-weight:600;display:flex}.section-title{color:var(--label);margin-top:25px;margin-bottom:12px;font-size:16px}.section-sub{margin:9px 0 17px;font-size:12px;line-height:1.8}.tiny{font-size:12px;line-height:1.65}.stack{gap:15px}.pbar{background:var(--separator)}.pbar>div{background:var(--accent);border-radius:inherit;transition:width .4s}.chip{border-radius:6px;padding:3px 8px;font-size:10px}.list{border-color:var(--separator);box-shadow:none;border-radius:13px}.list-row{text-align:left;min-height:56px;padding:16px 18px;transition:background .15s}.list-row:hover{background:var(--card-2)}.nav-header{border-bottom:1px solid var(--separator);background:var(--card);z-index:10;gap:12px;height:auto;min-height:68px;padding:13px 36px;position:relative;top:auto}.nav-title{font-size:16px}.nav-right{flex-wrap:wrap}.empty-state{color:var(--label-secondary);padding:50px 20px}.empty-state .es-title{color:var(--label);font-size:17px}.empty-state svg{color:var(--accent);margin-bottom:12px}.segmented{background:var(--separator);border-radius:10px;padding:4px;display:flex}.segmented button{white-space:nowrap;border-radius:7px;min-height:34px;padding:5px 22px;font-size:12px}.segmented button.active{background:var(--card);color:var(--accent);box-shadow:0 2px 5px #182c4310}.sheet-backdrop{z-index:200;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#102c4360;padding:24px}.sheet{background:var(--card);border-radius:19px;width:min(680px,100%);max-height:min(88dvh,880px);box-shadow:0 30px 100px #102c4330}.sheet-header{border-bottom:1px solid var(--separator);padding:17px 20px}.sheet-body{padding:22px}.alert{background:var(--card);border-radius:18px;max-width:430px;padding:26px}.alert-msg{font-size:13px;line-height:1.8}.toast{background:var(--label);color:var(--card);z-index:500;border-radius:12px;max-width:min(90vw,550px);padding:12px 20px;font-size:13px;bottom:26px;box-shadow:0 8px 35px #1234}.zoom-overlay{z-index:250}.eyebrow{letter-spacing:.17em;color:var(--accent);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:10px;font-weight:700}.dashboard-heading{justify-content:space-between;align-items:center;gap:15px;margin-bottom:25px;display:flex}.dashboard-heading h1{letter-spacing:.015em;margin:6px 0 7px;font-size:clamp(23px,2.2vw,31px);font-weight:750}.dashboard-heading p{color:var(--label-secondary);margin:0;font-size:12px}.date-pill{border:1px solid var(--separator);background:var(--card);color:var(--label-secondary);white-space:nowrap;border-radius:8px;align-items:center;gap:8px;padding:10px 13px;font-size:11px;display:flex}.dashboard-hero-grid{grid-template-columns:minmax(0,1.9fr) minmax(285px,1fr);gap:20px;display:grid}.learning-hero{color:#fff;background:#143f51;border-radius:19px;align-items:center;min-height:277px;padding:30px 31px;display:flex;position:relative;overflow:hidden}.learning-hero:after{content:"";pointer-events:none;background:radial-gradient(circle,#238b872e,#0000 68%);width:380px;height:380px;position:absolute;top:-100px;right:-130px}.hero-copy{z-index:2;position:relative}.hero-kicker{letter-spacing:.16em;color:#b3d3d9;align-items:center;gap:7px;font-size:9px;font-weight:600;display:flex}.hero-kicker>span{background:#93d1bb;border-radius:50%;width:5px;height:5px}.learning-hero h2{letter-spacing:.04em;margin-top:14px;font-size:clamp(23px,2vw,30px);font-weight:650;line-height:1.65}.learning-hero .hero-phrase{display:inline-block}.learning-hero p{color:#b9d0d7;max-width:330px;margin:10px 0 20px;font-size:11px}.hero-start{color:#174654;background:#fff;border:0;border-radius:9px;justify-content:center;align-items:center;gap:11px;min-height:44px;padding:11px 17px;font-size:12px;font-weight:700;transition:transform .15s,box-shadow .15s;display:flex}.hero-start:hover{transform:translateY(-2px);box-shadow:0 6px 20px #001b3b44}.hero-footnote{color:#a2c3cd;align-items:center;gap:5px;margin-top:12px;font-size:9px;display:flex}.hero-illustration{pointer-events:none;width:225px;height:230px;position:absolute;top:30px;right:6%}.hero-orbit{border:1px solid #83becb2b;border-radius:50%;width:230px;height:230px;position:absolute;top:0;left:0}.hero-orbit:after{content:"";border:1px solid #83becb2b;border-radius:50%;position:absolute;inset:25px}.hero-paper{border-radius:10px;width:139px;height:176px;position:absolute;top:22px;left:41px}.paper-back{background:#2e7b86;transform:rotate(-17deg)translate(-11px,7px)}.paper-front{color:#57999a;background:#f4f8f3;padding:19px;transform:rotate(9deg);box-shadow:0 15px 30px #001b3044}.paper-line{background:#bcd6d3;border-radius:3px;width:79%;height:5px;margin-top:11px;display:block}.paper-line.short{width:50%;margin:6px 0 15px}.paper-answer{align-items:center;gap:6px;height:16px;margin:5px 0;display:flex}.paper-answer>span:last-child{background:#d1e1db;border-radius:2px;width:64px;height:4px}.paper-dot{border:1px solid #bad1ce;border-radius:3px;width:10px;height:10px;margin:0 3px}.hero-float-check{color:#2b7767;background:#c8e8d4;border-radius:15px;place-items:center;width:49px;height:49px;display:grid;position:absolute;bottom:13px;right:10px;transform:rotate(-12deg);box-shadow:0 5px 20px #001b3b30}.hero-spark{color:#a3d1bc;position:absolute}.spark-one{font-size:28px;top:-6px;right:1px}.spark-two{font-size:23px;bottom:24px;left:3px}.daily-plan{background:var(--card);border:1px solid var(--separator);border-radius:18px;padding:22px}.card-heading{justify-content:space-between;align-items:center;display:flex}.card-heading h2{font-size:14px}.card-heading svg{color:var(--label-tertiary)}.goal-overview{align-items:center;gap:17px;margin:19px 0;display:flex}.goal-ring{border-radius:50%;flex-shrink:0;width:88px;height:88px;padding:6px}.goal-ring>div{background:var(--card);border-radius:50%;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;line-height:1.35;display:flex}.goal-ring strong{font-variant-numeric:tabular-nums;letter-spacing:-.05em;font-size:29px}.goal-ring strong small{margin-left:2px;font-size:10px;font-weight:500}.goal-ring span{color:var(--label-secondary);font-size:10px}.goal-overview>div:last-child>strong{margin-top:6px;font-size:13px;display:block}.goal-tag{color:var(--accent);background:var(--accent-weak);letter-spacing:.05em;border-radius:4px;padding:4px 6px;font-size:8px}.goal-overview p{color:var(--label-secondary);margin:4px 0 0;font-size:10px}.week-activity{border-bottom:1px solid var(--separator);justify-content:space-between;padding:0 2px 13px;display:flex}.week-activity>div{flex-direction:column;align-items:center;gap:5px;display:flex}.week-activity>div>span{border:1px solid var(--separator);border-radius:50%;place-items:center;width:25px;height:25px;display:grid}.week-activity small{color:var(--label-secondary);font-size:9px}.week-activity .today>span{border-color:var(--accent);background:var(--accent-weak)}.week-activity .today small{color:var(--accent);font-weight:700}.week-activity .complete{border-color:var(--accent);color:var(--card);background:var(--accent)!important}.week-activity .partial>span{background:var(--accent);border-radius:50%;width:8px;height:8px}.text-link{color:var(--accent);background:0 0;border:0;justify-content:center;align-items:center;gap:7px;width:100%;padding:12px 0 0;font-size:11px;font-weight:600;display:flex}.learning-metrics{background:var(--card);border:1px solid var(--separator);border-radius:14px;grid-template-columns:repeat(4,minmax(0,1fr));margin:20px 0 29px;padding:18px 0;display:grid}.learning-metrics>div{border-right:1px solid var(--separator);align-items:center;gap:13px;min-width:0;padding:0 19px;display:flex}.learning-metrics>div:last-child{border-right:0}.metric-icon{border-radius:11px;flex-shrink:0;place-items:center;width:40px;height:40px;display:grid}.teal{color:#188e8c;background:#e8f5f2}.amber{color:#c28d36;background:#fbf3e5}.blue{color:#5288be;background:#ecf3fb}.violet{color:#9481bd;background:#f2eef9}.learning-metrics small{color:var(--label-secondary);font-size:10px;display:block}.learning-metrics strong{letter-spacing:-.02em;font-variant-numeric:tabular-nums;white-space:nowrap;font-size:24px;font-weight:700;line-height:1.6;display:block}.learning-metrics strong>span{color:var(--label-secondary);letter-spacing:0;margin-left:5px;font-size:10px;font-weight:400}.section-heading{align-items:baseline;gap:15px;margin-bottom:14px;display:flex}.section-heading h2{letter-spacing:.02em;font-size:17px;font-weight:700}.section-heading>span{color:var(--label-secondary);font-size:11px}.quick-actions{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-bottom:31px;display:grid}.quick-actions>button{background:var(--card);border:1px solid var(--separator);text-align:left;border-radius:13px;align-items:center;gap:12px;padding:18px 15px;transition:transform .18s,border-color .18s,box-shadow .18s;display:flex}.quick-actions>button:hover:not(:disabled){border-color:var(--accent);transform:translateY(-3px);box-shadow:0 5px 20px #254c5410}.quick-actions>button:disabled{opacity:.65}.quick-actions>button>span:nth-child(2){flex:1}.quick-actions>button>svg{color:var(--label-tertiary)}.quick-icon{border-radius:12px;flex-shrink:0;place-items:center;width:43px;height:43px;display:grid}.quick-actions strong{font-size:13px;display:block}.quick-actions small{color:var(--label-secondary);margin-top:5px;font-size:9px;line-height:1.55;display:block}.browse-heading{justify-content:space-between;align-items:center;gap:15px;margin-top:8px;display:flex}.browse-heading .segmented{min-width:218px}.browse-heading .section-heading{flex-wrap:wrap;gap:5px 15px}.grid-cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.grid-card{padding:19px;transition:border-color .18s,transform .18s}.grid-card:hover{border-color:var(--accent);transform:translateY(-2px)}.grid-card-accent{display:none}.grid-card .tiny{font-size:10px}.grid-card .row>div>div:first-child{font-size:14px}.search-field{border:1px solid var(--separator-strong);background:var(--card-2);color:var(--label-secondary);border-radius:10px;align-items:center;gap:10px;padding:10px 13px;display:flex}.search-field:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-weak)}.search-field input{width:0;min-width:0;color:var(--label);background:0 0;border:0;outline:0;flex:1;padding:3px 0;font-size:14px}.search-field input:focus-visible{outline:0}.search-field button{background:0 0;border:0}.search-meta{color:var(--label-secondary);margin:12px 0;font-size:11px}.search-results button{border:0;border-bottom:1px solid var(--separator);text-align:left;background:0 0;align-items:center;gap:12px;width:100%;padding:15px 4px;display:flex}.search-results button>span:nth-child(2){-webkit-line-clamp:2;-webkit-box-orient:vertical;flex:1;font-size:12px;display:-webkit-box;overflow:hidden}.search-results button:hover{background:var(--card-2)}.search-create{color:var(--accent);background:0 0;border:0;gap:7px;margin-top:20px;font-size:12px;display:flex}.exam-switch-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:17px;display:grid}.exam-switch-option{text-align:left;border:1px solid var(--separator);background:var(--card);border-radius:9px;justify-content:space-between;align-items:center;gap:7px;padding:12px;font-size:12px;display:flex}.exam-switch-option.selected{border-color:var(--accent);background:var(--accent-weak);color:var(--accent)}.onboarding{max-width:1320px;margin:0 auto;padding:0 60px}.onboarding-header{justify-content:space-between;align-items:center;height:112px;display:flex}.onboarding-header>a{color:var(--label-secondary);align-items:center;gap:7px;font-size:12px;display:flex}.onboarding-layout{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:74px;margin:30px 0 45px;display:grid}.onboarding-intro{padding-top:20px}.onboarding-intro h1{letter-spacing:.025em;margin-top:20px;font-size:clamp(34px,3.3vw,47px);line-height:1.55}.onboarding-intro h1 em{color:var(--accent);font-style:normal}.onboarding-intro>p{color:var(--label-secondary);margin:23px 0 34px;font-size:14px;line-height:2}.onboarding-features{flex-direction:column;gap:21px;display:flex}.onboarding-features>div{align-items:center;gap:15px;display:flex}.onboarding-features>div>svg{color:var(--accent)}.onboarding-features strong{font-size:13px;display:block}.onboarding-features small{color:var(--label-secondary);margin-top:4px;font-size:11px;display:block}.privacy-note{color:var(--label-secondary);align-items:center;gap:7px;margin-top:30px;font-size:10px;display:flex}.onboarding-picker{border:1px solid var(--separator);background:var(--card);border-radius:22px;padding:30px;box-shadow:0 15px 50px #224a5707}.onboarding-picker h2{margin-top:10px;font-size:23px}.onboarding-picker>p{margin:6px 0 22px;font-size:11px}.onboarding-exams{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;max-height:390px;margin:18px 0;padding:2px 5px 2px 2px;display:grid;overflow-y:auto}.onboarding-exams>button{border:1px solid var(--separator);background:var(--card);text-align:left;border-radius:8px;justify-content:space-between;align-items:center;gap:5px;min-height:45px;padding:9px 12px;font-size:11px;font-weight:550;display:flex}.onboarding-exams>button:hover{border-color:var(--accent)}.onboarding-exams .selected{border-color:var(--accent);color:var(--accent);background:var(--accent-weak)}.start-learning{width:100%;min-height:49px;font-size:13px}.onboarding-picker p.onboarding-terms{color:var(--label-tertiary);text-align:center;margin:13px 0 0;font-size:9px;line-height:1.9}.onboarding-terms a{color:var(--label-secondary);text-decoration:underline}.onboarding-art{width:350px;height:170px;margin-top:25px;position:relative}.art-orbit{border:1px solid var(--separator-strong);border-radius:50%;width:270px;height:120px;position:absolute;top:30px;left:10px;transform:rotate(-20deg)}.orbit-two{transform:rotate(20deg)}.art-book{color:#aedbd4;background:#155164;border-left:6px solid #438391;border-radius:6px 12px 12px 6px;width:115px;height:147px;padding:13px;position:absolute;top:5px;left:75px;transform:rotate(-13deg);box-shadow:12px 16px 20px #25506317}.art-book>span{letter-spacing:.12em;margin-top:5px;font-size:8px;font-weight:600;display:block}.art-note{background:var(--card);border:1px solid var(--separator);color:var(--accent);border-radius:8px;align-items:center;gap:7px;padding:10px 12px;font-size:10px;display:flex;position:absolute;top:100px;left:175px;transform:rotate(5deg);box-shadow:0 5px 10px #1231}.onboarding-footer{border-top:1px solid var(--separator);color:var(--label-tertiary);justify-content:space-between;padding:23px 0;font-size:10px;display:flex}.loading-screen{place-items:center;min-height:100dvh;padding:30px;display:grid}.loading-card{text-align:center;max-width:430px}.loading-card>.brand{margin-bottom:25px}.loading-card h1{font-size:21px}.loading-card p{color:var(--label-secondary);font-size:13px}.loading-line{background:var(--separator);border-radius:4px;width:190px;height:4px;margin:20px auto;overflow:hidden}.loading-line:after{content:"";background:var(--accent);width:70px;height:4px;animation:1.3s ease-in-out infinite loading;display:block}.route-loading{text-align:center;color:var(--label-secondary);padding:60px 20px}.settings-grid{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:24px;display:grid}.settings-grid .section-title{margin-top:0}.settings-section{margin-bottom:24px}.settings-section .card{padding:22px}.settings-row{justify-content:space-between;align-items:center;gap:15px;display:flex}.settings-row>div{min-width:0}.settings-row strong{font-size:13px;display:block}.settings-row small{color:var(--label-secondary);margin-top:3px;font-size:11px;display:block}.settings-select{width:auto;max-width:180px;font-size:13px}.switch{appearance:none;background:var(--separator-strong);cursor:pointer;border:0;border-radius:15px;flex-shrink:0;width:42px;height:25px;transition:background .2s;position:relative}.switch:after{content:"";background:#fff;border-radius:50%;width:19px;height:19px;transition:transform .2s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #1233}.switch:checked{background:var(--accent)}.switch:checked:after{transform:translate(17px)}@keyframes loading{0%{transform:translate(-70px)}to{transform:translate(200px)}}@media (width>=1600px){.hero-illustration{right:12%}.learning-hero{min-height:310px}.hero-illustration{top:42px}}@media (width<=1200px){:root{--rail-width:212px}.side-rail{padding-left:12px;padding-right:12px}.workspace-header{padding:0 24px}.workspace-main>.page,.workspace-main .main-tab-page{padding-left:24px;padding-right:24px}.hero-illustration{opacity:.38;right:-45px}.hero-copy{max-width:95%}.learning-metrics>div{gap:9px;padding:0 13px}.metric-icon{width:32px;height:34px}.learning-metrics strong{font-size:21px}.learning-metrics strong>span{font-size:9px}.quick-actions{gap:10px}.quick-actions>button{gap:8px;padding:15px 12px}.quick-icon{width:34px;height:36px}.quick-actions>button>svg{display:none}.header-search kbd{margin-left:10px}}@media (width<=1000px){:root{--rail-width:192px}.brand-word{font-size:16px}.brand-word small{font-size:8px}.brand-mark{width:34px;height:34px}.brand-link{margin-left:4px}.rail-link{gap:9px;padding:12px 10px;font-size:12px}.dashboard-hero-grid{grid-template-columns:minmax(0,1.3fr) minmax(260px,1fr);gap:14px}.learning-hero{padding:24px}.learning-hero h2{font-size:24px}.hero-illustration{display:none}.daily-plan{padding:19px}.goal-overview{gap:12px}.goal-ring{width:75px;height:75px}.learning-metrics{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:20px}.learning-metrics>div:nth-child(2){border:0}.learning-metrics>div{padding:0 20px}.quick-actions{grid-template-columns:1fr}.quick-actions>button>svg{display:block}.quick-actions>button{gap:15px;padding:14px 18px}.quick-actions small{font-size:11px}.grid-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.section-heading{flex-wrap:wrap;gap:5px 12px}.browse-heading{display:block}.browse-heading .segmented{width:230px}.header-search>span,.header-search kbd{display:none}.header-search{background:0 0;border:0;padding:8px}.settings-grid{grid-template-columns:1fr}.onboarding{padding:0 30px}.onboarding-layout{gap:35px}.onboarding-picker{padding:24px}.onboarding-art{width:300px}}@media (width<=760px){:root{--rail-width:0px;--header-height:64px}.side-rail{display:none}.workspace-header{gap:12px;padding:0 18px}.mobile-brand{display:inline-flex}.mobile-brand .brand-mark{border-radius:8px;width:32px;height:32px}.mobile-brand .brand-mark>svg{width:20px}.workspace-breadcrumb{gap:6px;font-size:11px}.workspace-breadcrumb>span,.workspace-breadcrumb>svg{display:none}.header-tools{gap:8px}.avatar-button{display:none}.workspace-main>.page,.workspace-main .main-tab-page{padding:25px 20px 16px}.workspace-main{min-height:calc(100dvh - 160px)}.workspace-body{padding-bottom:calc(66px + env(safe-area-inset-bottom))}.workspace-footer{padding:20px;font-size:9px}.mobile-nav{padding:6px 8px calc(7px + env(safe-area-inset-bottom));border-top:1px solid var(--separator);background:color-mix(in srgb,var(--card) 97%,transparent);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);z-index:70;justify-content:space-around;align-items:center;display:flex;position:fixed;bottom:0;left:0;right:0}.mobile-nav a,.mobile-nav button{color:var(--label-secondary);background:0 0;border:0;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:3px;min-height:46px;padding:4px 2px;font-size:9px;text-decoration:none;display:flex}.mobile-nav a.is-active{color:var(--accent);font-weight:700}.mobile-nav a.is-active svg{background:var(--accent-weak);box-shadow:0 0 0 5px var(--accent-weak);border-radius:5px}.mobile-menu-nav .rail-link{min-height:48px;font-size:14px}.mobile-menu-nav .rail-link svg{width:21px}.dashboard-heading{flex-wrap:wrap;gap:13px;margin-bottom:21px}.dashboard-heading h1{font-size:25px}.dashboard-heading p{font-size:11px}.eyebrow{font-size:9px}.date-pill{padding:7px 10px;font-size:10px}.dashboard-hero-grid{grid-template-columns:minmax(0,1fr);gap:15px}.learning-hero{min-height:260px;padding:27px}.learning-hero h2{font-size:25px}.learning-hero p{max-width:250px;font-size:10px}.hero-illustration{opacity:.3;display:block;top:24px;right:-20px;transform:scale(.9)}.hero-copy{max-width:100%}.hero-start{font-size:12px}.daily-plan{grid-template-columns:1fr 1fr;column-gap:18px;padding:20px;display:grid}.daily-plan .card-heading{grid-column:1/-1}.goal-overview{grid-column:1/-1;gap:20px;margin:15px 0 5px}.goal-ring{width:78px;height:78px}.goal-overview>div:last-child>strong{font-size:15px}.goal-overview p{font-size:11px}.week-activity{grid-column:1/-1;padding:15px 0 12px}.week-activity>div>span{width:29px;height:29px}.daily-plan .text-link{grid-column:1/-1;padding-top:12px}.learning-metrics{gap:20px 0;margin:16px 0 26px;padding:17px 0}.learning-metrics>div{gap:10px;padding:0 14px}.learning-metrics strong{font-size:23px}.learning-metrics strong>span{margin-left:3px;font-size:9px}.metric-icon{width:34px;height:36px}.learning-metrics small{font-size:9px}.section-heading h2{font-size:16px}.section-heading>span{font-size:10px}.quick-actions{gap:9px;margin-bottom:26px}.quick-actions>button{padding:15px}.quick-actions strong{font-size:13px}.quick-actions small{font-size:10px}.browse-heading .segmented{width:100%}.grid-cards{gap:10px}.grid-card{border-radius:12px;padding:15px 12px}.grid-card .row>div>div:first-child{font-size:12px}.grid-card .row>svg{width:45px;height:45px}.grid-card .tiny{font-size:9px}.nav-header{flex-wrap:wrap;min-height:61px;padding:12px 18px}.nav-title{font-size:14px}.nav-back{font-size:11px}.nav-right{margin-left:auto}.card{padding:18px}.sheet-backdrop{align-items:flex-end;padding:0}.sheet{width:100%;max-height:91dvh;padding-bottom:env(safe-area-inset-bottom);border-radius:20px 20px 0 0}.sheet-header{padding:14px 17px}.sheet-body{padding:19px}.alert{margin:auto 20px}.toast{bottom:calc(82px + env(safe-area-inset-bottom))}.onboarding{padding:0 22px}.onboarding-header{height:86px}.onboarding-header>a{font-size:10px}.onboarding-layout{margin-top:8px;display:block}.onboarding-intro{padding-top:8px}.onboarding-intro h1{margin-top:11px;font-size:33px}.onboarding-intro>p{margin:17px 0 22px;font-size:12px}.onboarding-features,.onboarding-art{display:none}.privacy-note{margin:16px 0 25px;font-size:9px}.onboarding-picker{padding:23px 18px}.onboarding-picker h2{font-size:21px}.onboarding-exams{max-height:320px}.onboarding-exams>button{min-height:45px;padding:8px 10px;font-size:11px}.onboarding-footer{font-size:9px}.onboarding-footer>span{display:none}.offline-banner{padding:9px 18px;font-size:10px}.exam-switch-option{font-size:11px}.settings-row{gap:10px}.settings-row strong{font-size:12px}.settings-row small{font-size:10px}.settings-section .card{padding:18px}}@media (width<=380px){.workspace-main>.page,.workspace-main .main-tab-page{padding-left:14px;padding-right:14px}.learning-metrics>div{gap:7px;padding:0 10px}.metric-icon{width:28px}.learning-metrics strong{font-size:20px}.learning-hero{padding:24px}.hero-illustration{opacity:.23;right:-50px}.grid-cards{grid-template-columns:1fr}.dashboard-heading h1{font-size:23px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}@media print{.side-rail,.workspace-header,.mobile-nav,.workspace-footer,.offline-banner{display:none!important}.workspace-body{margin:0;padding:0}.workspace-main{max-width:none}.workspace-main>.page{padding:0}}.settings-notice{background:var(--green-weak);color:var(--green);border-radius:11px;align-items:center;gap:10px;margin-bottom:22px;padding:15px 18px;font-size:13px;display:flex}.settings-notice.is-error{background:var(--red-weak);color:var(--red)}.settings-icon-row{align-items:flex-start;gap:13px;display:flex}.settings-icon-row strong{font-size:13px}.settings-icon-row p{color:var(--label-secondary);margin:7px 0 0;font-size:11px;line-height:1.8}.settings-divider{background:var(--separator);height:1px;margin:6px 0}.settings-bottom{border-top:1px solid var(--separator);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;padding-top:20px;display:flex}.settings-bottom>div{gap:20px;font-size:11px;display:flex}.settings-bottom a{color:var(--label-secondary)}.library-create-card{background:linear-gradient(115deg,var(--card),var(--accent-weak));padding:28px;position:relative}.library-create-card .field{max-width:520px}.library-create-icon{width:60px;height:60px;color:var(--accent);background:var(--card);border:1px solid var(--separator);border-radius:17px;place-items:center;display:grid;position:absolute;top:25px;right:30px}.library-create-card>.tiny{margin-top:16px!important}.library-empty{border:1px dashed var(--separator-strong);background:var(--card);border-radius:17px;margin-top:20px;padding:55px 20px}.library-empty>.tiny{margin-top:9px}.library-set-link{text-align:left;color:var(--label);background:0 0;border:0;flex:1;padding:5px}.stats-empty{text-align:center;padding:70px 25px 35px}.stats-empty>svg{color:var(--accent);margin-bottom:23px}.stats-empty h2{font-size:21px}.stats-empty p{color:var(--label-secondary);margin:18px 0 27px;font-size:13px;line-height:2}.stats-empty-features{border-top:1px solid var(--separator);color:var(--label-secondary);justify-content:center;gap:30px;margin-top:55px;padding-top:22px;font-size:11px;display:flex}.stats-hero{color:#fff;background:#143f51;padding:28px}.stats-screen{max-width:1100px}.stats-screen .heat-grid{gap:6px}.stats-screen .metric{border:1px solid var(--separator);background:var(--card);border-radius:13px;padding:20px 12px}.stats-screen .metric .m-label{font-size:11px}@media (width<=760px){.library-create-card{padding:21px}.library-create-icon{display:none}.library-create-card .row.wrap>.btn{white-space:nowrap;flex:1}.library-create-card .row.wrap>.btn:first-child{flex-basis:100%}.stats-empty{padding:40px 20px 25px}.stats-empty h2{font-size:17px}.stats-empty-features{flex-direction:column;gap:10px;margin-top:35px;padding-top:20px}.stats-empty p{font-size:12px}}.opt.dimmed{opacity:1;color:var(--label-secondary)}.image-load-error{border:1px dashed var(--separator-strong);color:var(--label-secondary);border-radius:9px;margin:12px 0;padding:14px;font-size:12px;line-height:1.7;display:block}.rail-link{position:relative}.rail-link>span{white-space:nowrap}.rail-link>svg{flex-shrink:0}.rail-chevron{width:12px;position:absolute;right:7px}@media (height<=800px) and (width>=761px){.side-rail{padding-top:22px}.brand-link{margin-bottom:20px}.exam-switch{margin-bottom:18px}.rail-link{padding-top:10px;padding-bottom:10px}.rail-bottom{padding-top:16px}.rail-goal{margin-bottom:8px;padding-top:10px;padding-bottom:10px}}@media (width>=761px) and (width<=1200px){.side-rail .brand-word small{letter-spacing:0;white-space:nowrap;font-size:8px}.side-rail .brand{gap:8px}}.workspace-header>*,.workspace-breadcrumb,.practice-layout>*,.study-test-layout>*{min-width:0}.workspace-breadcrumb strong{text-overflow:ellipsis;min-width:0;overflow:hidden}.header-tools{flex-shrink:0}.segmented{min-width:0;max-width:100%}.segmented button{min-width:0;padding-inline:8px}.nav-header{grid-template-columns:auto minmax(0,1fr) auto}.nav-title{min-width:0}.sheet{min-height:0;overflow:hidden}.sheet-header{flex-shrink:0;grid-template-columns:auto minmax(0,1fr) auto;gap:10px}.sheet-title{white-space:normal;overflow-wrap:anywhere;min-width:0;line-height:1.5}.sheet-actions{flex-wrap:wrap;min-width:0}.sheet-body{overscroll-behavior:contain;overflow-wrap:anywhere;min-height:0}.alert{overscroll-behavior:contain;overflow-wrap:anywhere;max-height:calc(100dvh - 48px);overflow-y:auto}.alert-actions>.btn{flex:1;min-width:0}@media (width>=761px) and (width<=900px){.dashboard-hero-grid{grid-template-columns:minmax(0,1fr)}.learning-hero{min-height:240px}.goal-overview{gap:24px}}@media (width<=760px){.nav-header{grid-template-columns:auto minmax(0,1fr)}.nav-right{grid-column:1/-1;justify-content:flex-end;justify-self:stretch}.nav-right:empty{display:none}.nav-header:has(.nav-right>:only-child){grid-template-columns:auto minmax(0,1fr) auto}.nav-right:has(>:only-child){grid-column:auto}.field,.search-field input,.settings-select,.speech-rate select,.timer-duration select,.workspace-main .field,.sheet-body .field,.alert .field{font-size:16px}.sheet-header .btn{min-height:40px}}@media (width<=380px){.workspace-header{gap:9px;padding-inline:14px}.header-tools{gap:5px}.focus-timer-toggle{max-width:110px}.learning-metrics strong{white-space:normal}}.dialog-error{background:var(--red-weak);color:var(--red);border-radius:9px;padding:12px 14px;font-size:12px;line-height:1.7}button.chip{appearance:none;border:1px solid #0000;min-height:34px;padding:6px 10px;line-height:1.5}button.chip:hover:not(:disabled){border-color:var(--separator-strong)}.app-update-notice{border:1px solid var(--separator-strong);background:var(--accent-weak);color:var(--label);border-radius:13px;align-items:center;gap:14px;margin:18px 36px 0;padding:15px 20px;display:flex}.app-update-notice>svg{color:var(--accent);flex-shrink:0}.app-update-notice>div{flex:1;min-width:0}.app-update-notice strong{font-size:13px}.app-update-notice p{color:var(--label-secondary);overflow-wrap:anywhere;margin:5px 0 0;font-size:11px;line-height:1.7}.app-update-notice>button{flex-shrink:0;min-height:40px}@media (width<=1200px){.app-update-notice{margin-inline:24px}}@media (width<=760px){.app-update-notice{margin-inline:20px}}@media (width<=380px){.app-update-notice{margin-inline:14px}}@media print{.app-update-notice{display:none}}@media (width<=600px){.app-update-notice{grid-template-columns:18px minmax(0,1fr) 40px;gap:10px;padding:14px;display:grid}.app-update-notice>svg{align-self:start;margin-top:3px}.app-update-notice>.btn-primary{white-space:normal;grid-area:2/1/auto/3;justify-self:start;max-width:100%}.app-update-notice>.btn-ghost{grid-area:1/3;align-self:start;padding:8px}}