:root{--paper:#f6f6f4;--sheet:#ffffff;--ink:#1b1d22;--ink-2:#3d414a;--pencil:#5d616b;--rule:#e3e4df;--rule-2:#d2d4ce;--hover:#f0f1ee;--grid:#d9dad5;--blue:#2340c8;--blue-ink:#1b33a6;--blue-tint:#eaeefc;--on-blue:#ffffff;--red:#c8312a;--red-tint:#fbe6e3;--ok:#16804a;--shadow:0 1px 2px rgba(20,22,28,0.06),0 4px 14px rgba(20,22,28,0.08);--r-ctl:8px;--r-card:6px;--r-float:12px;--f-ui:"Atkinson Hyperlegible","Segoe UI",system-ui,-apple-system,sans-serif}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--paper:#15161a;--sheet:#1e2025;--ink:#e9eaee;--ink-2:#c7cad3;--pencil:#9a9ea8;--rule:#30333a;--rule-2:#3d4048;--hover:#272a30;--grid:#33363d;--blue:#8ea3ff;--blue-ink:#b6c3ff;--blue-tint:#232a45;--on-blue:#0b0f1a;--red:#ff8a7b;--red-tint:#3a1814;--ok:#5ccb8c;--shadow:0 1px 2px rgba(0,0,0,0.3),0 6px 18px rgba(0,0,0,0.35)}}:root[data-theme=dark]{color-scheme:dark;--paper:#15161a;--sheet:#1e2025;--ink:#e9eaee;--ink-2:#c7cad3;--pencil:#9a9ea8;--rule:#30333a;--rule-2:#3d4048;--hover:#272a30;--grid:#33363d;--blue:#8ea3ff;--blue-ink:#b6c3ff;--blue-tint:#232a45;--on-blue:#0b0f1a;--red:#ff8a7b;--red-tint:#3a1814;--ok:#5ccb8c;--shadow:0 1px 2px rgba(0,0,0,0.3),0 6px 18px rgba(0,0,0,0.35)}*{box-sizing:border-box}[hidden]{display:none!important}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-ui);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased}::selection{background:color-mix(in srgb,var(--blue) 22%,transparent)}.site{min-height:100svh;display:flex;flex-direction:column}.site a{color:var(--blue);text-underline-offset:3px}.site :focus-visible,.top :focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:4px}.site main{flex:1 1}.wrap{width:100%;max-width:1120px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}.muted{color:var(--pencil)}.small{font-size:.875rem}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.top{position:-webkit-sticky;position:sticky;top:0;z-index:20;background:var(--sheet);border-bottom:1px solid var(--rule);padding-top:env(safe-area-inset-top,0)}.top-in{height:56px;display:flex;align-items:center;gap:20px;max-width:1240px;margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}.top.full .top-in{max-width:none;padding-left:max(24px,env(safe-area-inset-left,0px));padding-right:max(28px,env(safe-area-inset-right,0px))}.wordmark{display:inline-flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink)!important;font-weight:700;font-size:1rem;white-space:nowrap}.wordmark img,.wordmark svg{width:20px;height:20px;flex:none}.wordmark img.lockup{width:auto;height:26px}@media (max-width:480px){.wordmark img.lockup{height:20px}}@media (max-width:360px){.wordmark img.lockup{height:15px}}.top-nav{display:flex;gap:2px}.top-nav a{color:var(--ink)!important;text-decoration:none;font-size:.94rem;padding:7px 10px;border-radius:var(--r-ctl)}.top-nav a:hover{background:var(--hover)}.top-nav a[aria-current=page]{font-weight:700}.acct{margin-left:auto;display:flex;align-items:center;gap:6px}.acct .login{color:var(--ink)!important;text-decoration:none;font-size:.94rem;padding:7px 10px;border-radius:var(--r-ctl);white-space:nowrap}.acct .login:hover{background:var(--hover)}.menu,.menu-btn{display:none}@media (max-width:760px){.top-nav{display:none}.menu-btn{display:grid;place-items:center;width:40px;height:40px;border:0;background:none;border-radius:var(--r-ctl);color:var(--ink);cursor:pointer}.menu-btn:hover{background:var(--hover)}.menu-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}.menu:not([hidden]){display:flex;flex-direction:column;padding:6px 12px 12px;border-top:1px solid var(--rule)}.menu a{color:var(--ink)!important;text-decoration:none;padding:12px 8px;border-radius:var(--r-ctl)}.menu a:hover{background:var(--hover)}.acct .login{display:none}}.site-foot{background:var(--sheet);border-top:1px solid var(--rule);margin-top:96px;padding:28px 0 calc(36px + env(safe-area-inset-bottom, 0px));color:var(--pencil);font-size:.875rem}.site-foot .wrap{display:grid;grid-gap:12px;gap:12px}.site-foot nav{display:flex;gap:18px;flex-wrap:wrap}.site-foot nav a{color:var(--pencil)}.site-foot p{margin:0;max-width:70ch}.btn-site{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:inherit;font-weight:700;font-size:.94rem;padding:9px 16px;border-radius:var(--r-ctl);border:1px solid var(--rule-2);background:var(--sheet);text-decoration:none;cursor:pointer;white-space:nowrap}.btn-site,.site .btn-site,.top .btn-site{color:var(--ink)}.btn-site:hover{background:var(--hover)}.btn-site.primary,.site .btn-site.primary,.top .btn-site.primary{background:var(--blue);border-color:var(--blue);color:var(--on-blue)}.btn-site.primary:hover{background:var(--blue-ink);border-color:var(--blue-ink)}.btn-site.block{width:100%}.btn-site:disabled{opacity:.5;cursor:not-allowed}.btn-site.big{padding:12px 22px;font-size:1.02rem}.link{background:none;border:0;padding:0;font:inherit;color:var(--blue);text-decoration:underline;text-underline-offset:3px;cursor:pointer}.auth{display:grid;place-items:start center;padding:64px 20px}.auth-card{width:100%;max-width:420px;background:var(--sheet);border:1px solid var(--rule);border-radius:var(--r-card);padding:32px}.auth-card h1{font-size:1.5rem;letter-spacing:-.01em;margin:0 0 8px}.auth-card form{display:grid;grid-gap:10px;gap:10px;margin-bottom:8px}.auth-card label{font-weight:700;font-size:.9rem}.auth-card input{font:inherit;padding:10px 12px;border:1px solid var(--rule-2);border-radius:var(--r-ctl);background:var(--sheet);color:var(--ink)}.auth-card input:focus-visible{outline:2px solid var(--blue);outline-offset:1px}.or{display:flex;align-items:center;gap:12px;color:var(--pencil);font-size:.85rem;margin:18px 0}.or:after,.or:before{content:"";flex:1 1;height:1px;background:var(--rule)}.note{padding:10px 12px;border-radius:var(--r-ctl);font-size:.9rem}.note.bad{background:var(--red-tint);color:var(--red)}.lib{padding-top:40px;display:grid;grid-template-columns:220px minmax(0,1fr);grid-gap:40px;gap:40px;align-items:start}.lib-head{grid-column:1/-1;display:flex;flex-direction:column;gap:6px;max-width:64ch}.lib-head h1{font-size:2rem;letter-spacing:-.015em;line-height:1.15;margin:0}.lib-head p{margin:0}.filters{position:-webkit-sticky;position:sticky;top:80px;gap:22px}.filters,.filters fieldset{display:flex;flex-direction:column}.filters fieldset{border:0;margin:0;padding:0;gap:2px}.filters legend{font-weight:700;font-size:.875rem;margin-bottom:6px;padding:0}.fopt{display:flex;justify-content:space-between;gap:10px;align-items:center;text-align:left;font:inherit;font-size:.94rem;background:none;border:0;border-radius:var(--r-ctl);padding:7px 10px;cursor:pointer;color:var(--ink)}.fopt:hover{background:var(--hover)}.fopt[aria-pressed=true]{background:var(--blue-tint);font-weight:700}.fopt .n{color:var(--pencil);font-size:.82rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-weight:400}.plist{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;border-top:1px solid var(--rule)}.prow{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;grid-gap:6px 24px;gap:6px 24px;padding:18px 4px;border-bottom:1px solid var(--rule)}.prow-main{display:flex;flex-direction:column;gap:4px;min-width:0}.pt{font-weight:700;font-size:1.06rem;color:var(--ink)!important;text-decoration:none}.pt:hover{text-decoration:underline}.pm{color:var(--pencil);font-size:.9rem;display:flex;flex-wrap:wrap;gap:4px 12px;align-items:center}.tag{font-size:.8rem;font-weight:700;padding:1px 8px;border-radius:999px;background:var(--hover);color:var(--ink-2)}.diff{display:inline-flex;gap:2px;align-items:center}.diff i{width:7px;height:12px;border-radius:2px;background:var(--rule-2)}.diff i.on{background:var(--ink-2)}.pactions{display:flex;gap:8px;align-items:center}.pactions .btn-site{min-height:40px}.lib-empty{padding:28px 4px;color:var(--pencil)}@media (max-width:860px){.lib{grid-template-columns:minmax(0,1fr);gap:20px}.filters{position:static;gap:14px 24px}.filters,.filters fieldset{flex-direction:row;flex-wrap:wrap}.filters fieldset{gap:4px}.filters legend{width:100%}.fopt{border:1px solid var(--rule)}}@media (max-width:560px){.prow{grid-template-columns:minmax(0,1fr)}}.workspace{height:100svh;display:flex;flex-direction:column;background:var(--paper);overflow:hidden}.ws-bar{display:flex;align-items:center;gap:14px;height:56px;padding:0 max(14px,env(safe-area-inset-right,0px)) 0 max(14px,env(safe-area-inset-left,0px));background:var(--sheet);border-bottom:1px solid var(--rule);flex:none}.ws-bar .wordmark span{display:none}.ws-bar .acct{margin-left:0}.ws-bar h1{font-size:1rem;margin:0;flex:1 1;min-width:0;overflow:hidden;text-overflow:ellipsis}.back,.ws-bar h1{white-space:nowrap}.back{color:var(--ink-2);text-decoration:none;font-weight:700;border-radius:var(--r-ctl);padding:0 8px;min-height:44px;min-width:44px;display:inline-flex;align-items:center;gap:6px}.ws-body{flex:1 1;min-height:0;display:grid;grid-template-columns:1fr;position:relative}.ws-body.with-panel{grid-template-columns:1fr 380px}.ws-panel{background:var(--sheet);border-left:1px solid var(--rule);overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:16px}.seg{display:inline-flex;background:var(--paper);padding:3px;flex:none;border-radius:10px}.seg button{font:inherit;font-size:.9rem;font-weight:700;min-height:38px;padding:0 14px;border:0;background:none;color:var(--ink-2);cursor:pointer;border-radius:var(--r-ctl)}.seg button[aria-pressed=true]{background:var(--sheet);color:var(--ink);box-shadow:0 1px 2px rgba(20,24,33,.15)}.seg button:disabled{opacity:.45;cursor:not-allowed}.iv-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.interviewer{display:flex;flex-direction:column;gap:16px;flex:1 1}.locked{display:grid;grid-gap:12px;gap:12px;justify-items:start}.locked h2{font-size:1.1rem;margin:0}.locked p{margin:0}@media (max-width:1000px){.ws-bar .acct .login{display:none}}@media (max-width:700px){.back-text,.ws-bar .wordmark,.ws-bar h1{display:none}.ws-bar .acct .btn-site{padding:8px 10px}.ws-bar{gap:8px;justify-content:space-between}.seg button{padding:0 10px}.panel-toggle{padding:10px 12px}}.status{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-weight:700;color:var(--pencil);text-transform:capitalize}.status.s-live{color:var(--red)}@media (max-width:860px){.ws-body.with-panel{grid-template-columns:1fr;grid-template-rows:1fr minmax(0,48%)}.ws-panel{border-left:0;border-top:1px solid var(--rule)}}.board{position:relative;overflow:hidden;touch-action:none;-moz-user-select:none;user-select:none;-webkit-user-select:none;min-height:0;background-color:var(--paper);background-image:radial-gradient(circle,var(--grid) 1.1px,transparent 1.3px)}.board-layer{left:0;top:0;transform-origin:0 0;will-change:transform}.board-card,.board-ink,.board-layer{position:absolute}.board-ink{inset:0;width:100%;height:100%;cursor:crosshair;touch-action:none}.board[data-tool=hand] .board-ink{cursor:-webkit-grab;cursor:grab}.board[data-tool=eraser] .board-ink{cursor:cell}.board-bar{position:absolute;left:50%;bottom:max(16px,env(safe-area-inset-bottom));transform:translateX(-50%);display:flex;align-items:center;gap:2px;background:var(--sheet);padding:4px;border-radius:var(--r-float);box-shadow:var(--shadow);max-width:calc(100% - 24px);overflow-x:auto}.board-bar button{min-width:44px;height:44px;border:0;border-radius:var(--r-ctl);background:none;color:var(--ink);font:inherit;font-size:1.2rem;display:grid;place-items:center;cursor:pointer;flex:none}.board-bar button.text{font-size:.85rem;font-weight:600;padding:0 10px}.board-bar button:hover{background:var(--hover)}.board-bar button[aria-pressed=true]{background:var(--blue);color:var(--on-blue)}.board-bar button:disabled{opacity:.35;cursor:default}.board-bar .swatch span{width:16px;height:16px;border-radius:50%;background:var(--ink);box-shadow:0 0 0 2px var(--sheet),0 0 0 3px var(--rule)}.board-bar .swatch[data-c=blue] span{background:var(--blue)}.board-bar .swatch[data-c=red] span{background:var(--red)}.board-bar .swatch[aria-pressed=true]{background:none}.board-bar .swatch[aria-pressed=true] span{box-shadow:0 0 0 2px var(--sheet),0 0 0 4px var(--blue)}.board-bar .sep{width:1px;height:24px;background:var(--rule);margin:0 4px;flex:none}.board-bar .zoom{min-width:48px;text-align:center;font-size:.85rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--ink-2);flex:none}.board :focus-visible{outline:3px solid var(--blue);outline-offset:2px}.qcard{background:var(--sheet);padding:22px 26px;border:1px solid var(--rule);border-radius:var(--r-card);box-shadow:0 1px 2px rgba(20,22,28,.05);font-size:18px;line-height:1.55}.qcard header{margin-bottom:12px}.qcard header h2{font-size:1.3rem;line-height:1.25;margin:0 0 2px}.qcard header p{margin:0;font-size:.9rem;color:var(--pencil)}.qcard .md p{margin:0 0 10px}.qpart{display:flex;gap:10px;margin-top:12px;padding-top:12px;border-top:1px solid var(--rule)}.qcard.part .qpart{margin:0;padding:0;border:0}.qlabel{font-weight:700;color:var(--blue);flex:none}.qpart .md p:last-child{margin-bottom:0}.help{display:flex;flex-direction:column;gap:18px}.help-part{margin:0;font-weight:700;color:var(--blue)}.help fieldset{border:0;padding:0;margin:0}.help legend{font-weight:700;margin-bottom:10px;padding:0}.approaches{display:grid;grid-template-columns:1fr 1fr;grid-gap:2px 6px;gap:2px 6px}.approach{display:flex;gap:9px;align-items:center;text-align:left;font:inherit;font-size:.92rem;line-height:1.25;min-height:40px;padding:6px 8px;border:0;border-radius:var(--r-ctl);background:none;color:var(--ink);cursor:pointer}.approach:hover{background:var(--hover)}.approach .dot{width:16px;height:16px;border-radius:50%;border:1.5px solid var(--pencil);flex:none;display:grid;place-items:center}.approach[aria-checked=true]{background:var(--blue-tint)}.approach[aria-checked=true] .dot{border-color:var(--blue)}.approach[aria-checked=true] .dot:after{content:"";width:8px;height:8px;border-radius:50%;background:var(--blue)}.approach.wide{grid-column:1/-1}@media (max-width:380px){.approaches{grid-template-columns:1fr}}.stages{display:grid;grid-gap:6px;gap:6px}.chip{font:inherit;font-size:.92rem;min-height:44px;padding:8px 12px;border:1px solid var(--rule);border-radius:var(--r-ctl);background:var(--sheet);color:var(--ink);cursor:pointer;text-align:left}.chip:hover{border-color:var(--rule-2)}.chip[aria-pressed=true]{background:var(--blue-tint);border-color:var(--blue)}.verdict{padding:14px 16px;background:var(--paper);border-radius:var(--r-ctl);border-top:3px solid var(--pencil)}.verdict .md p{margin:0 0 8px}.verdict.v-best{border-top-color:var(--ok)}.verdict.v-valid{border-top-color:var(--blue)}.verdict.v-dead-end,.verdict.v-not-natural{border-top-color:var(--red)}.verdict .row{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-top:4px}.code{margin:0 0 6px;color:var(--red);font-size:.9rem}.code b{background:var(--red-tint);padding:1px 6px;margin-right:4px;border-radius:4px}.answers{display:grid;grid-gap:6px;gap:6px;margin-bottom:10px}.answer{font:inherit;min-height:52px;padding:10px 14px;border:1px solid var(--rule);border-radius:var(--r-ctl);background:var(--sheet);color:var(--ink);cursor:pointer;text-align:left}.answer:hover{border-color:var(--rule-2)}.answer.right{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 12%,var(--paper))}.answer.wrong{border-color:var(--red);background:var(--red-tint)}.answer.none{color:var(--pencil);min-height:44px}.ok{color:var(--ok);font-weight:700;font-size:1.1rem;margin:0 0 12px}.followups h3,.solution h3{font-size:.95rem;margin:0 0 8px}.followups ul{margin:0;padding-left:20px}.followups li{margin-bottom:6px}.confirm p{margin:0 0 8px}.confirm .row{display:flex;gap:16px;align-items:center}.solution{border-top:1px solid var(--rule);padding-top:14px}.transcript{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;flex:1 1;min-height:80px}.transcript li{font-size:.95rem}.transcript .who{display:block;font-size:.82rem;font-weight:700;color:var(--pencil)}.transcript .student .who{color:var(--blue)}.say{display:flex;gap:6px}.say input{flex:1 1;min-width:0;font:inherit;padding:10px 12px;border:1px solid var(--rule-2);border-radius:var(--r-ctl);background:var(--sheet);color:var(--ink)}.summary h2{font-size:1rem;margin:0 0 8px}.summary dl{display:grid;grid-template-columns:1fr auto;grid-gap:6px 16px;gap:6px 16px;margin:0}.summary dt{color:var(--ink-2)}.summary dd{margin:0;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}@media (max-width:560px){.board-bar .zoom-ctl{display:none}.qcard{padding:18px;font-size:17px}}.dates{padding-top:40px;max-width:1080px}.dates h1{font-size:2rem;letter-spacing:-.015em;margin:0 0 8px}.dates h2{font-size:1.35rem;margin:48px 0 6px}.dates p{margin:0 0 10px;max-width:70ch}.dates .intro{color:var(--ink-2)}.next{font-size:1.05rem;min-height:1.6em;margin:14px 0 18px!important}.strip{--lab:10.5rem;position:relative;margin:6px 0 4px;padding-top:26px}.strip-plot{position:absolute;top:0;bottom:0;left:var(--lab);right:0;pointer-events:none}.strip-plot .tick{position:absolute;top:26px;bottom:0;border-left:1px solid var(--rule)}.strip-today{position:absolute;top:0;bottom:0;width:0;border-left:1.5px solid var(--ink);z-index:2}.strip-today span{position:absolute;top:0;left:0;transform:translateX(-50%);background:var(--ink);color:var(--paper);font-size:.75rem;font-weight:700;line-height:1.15;padding:4px 8px;border-radius:10px;text-align:center;white-space:nowrap}.strip-today small{display:block;font-size:.72rem;font-weight:400}.strip-row{display:grid;grid-template-columns:var(--lab) minmax(0,1fr);align-items:center;min-height:48px}.strip-axis{min-height:44px;border-bottom:1px solid var(--rule-2);font-size:.82rem;color:var(--pencil)}.strip-track{position:relative;align-self:stretch}.strip-axis .strip-track span{position:absolute;top:2px;padding-left:6px}.strip-axis .strip-track em{position:absolute;top:24px;transform:translateX(-50%);font-style:normal;font-size:.72rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.strip-name{font-size:.94rem;line-height:1.25;padding-right:12px}.strip-name span{display:block;font-size:.82rem;color:var(--pencil)}.strip-track i{position:absolute;top:50%;height:10px;margin-top:-5px;background:var(--blue);border-radius:2px}.strip-track i.rough{background:color-mix(in srgb,var(--blue) 16%,transparent);border:1.5px dashed var(--blue)}.agenda{list-style:none;margin:24px 0 18px;padding:0;border-top:1px solid var(--rule)}.agenda li{border-bottom:1px solid var(--rule)}.agenda .row{display:grid;grid-template-columns:150px minmax(0,1fr) auto;grid-gap:4px 14px;gap:4px 14px;align-items:baseline;padding:11px 2px}.agenda .when{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;white-space:nowrap}.agenda .what{min-width:0}.agenda .note{display:block;font-size:.875rem;color:var(--pencil);padding:0;background:none;border-radius:0}.agenda .rel{font-size:.9rem;white-space:nowrap;text-align:right}.agenda .rel,.agenda li.past .what,.agenda li.past .when{color:var(--pencil)}.todayline{display:block;font-size:.82rem;font-weight:700;color:var(--ink);padding:8px 2px 0}@media (max-width:640px){.agenda .row{grid-template-columns:minmax(0,1fr) auto}.agenda .when{grid-column:1;font-weight:700}.agenda .what{grid-column:1/-1}.agenda .rel{grid-column:2;grid-row:1}.strip{--lab:6.8rem}.strip-name{font-size:.86rem}.strip-axis .strip-track em{display:none}.strip-axis{min-height:26px}}.dates .table-wrap{overflow-x:auto;background:var(--sheet);border:1px solid var(--rule);border-radius:var(--r-card);margin:12px 0 10px}.dates table.imp{border-collapse:collapse;width:100%;min-width:600px;font-size:.94rem}.dates .imp td,.dates .imp th{text-align:left;vertical-align:top;padding:11px 14px;border-bottom:1px solid var(--rule)}.dates .imp tbody tr:last-child td,.dates .imp tbody tr:last-child th{border-bottom:0}.dates .imp thead th{font-size:.85rem;color:var(--pencil);font-weight:400}.dates .imp td.n{white-space:nowrap;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.iv-intro p{margin:0 0 8px}.iv-live{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.who-speaks{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:.92rem;color:var(--ink-2);min-width:11em}.who-speaks .dot{width:10px;height:10px;border-radius:50%;background:var(--rule-2)}.who-speaks.on{color:var(--red)}.who-speaks.on .dot{background:var(--red);animation:speak .9s ease-in-out infinite alternate}@keyframes speak{0%{transform:scale(.8)}to{transform:scale(1.25)}}@media (prefers-reduced-motion:reduce){.who-speaks.on .dot{animation:none}}.meter{flex:1 1;min-width:60px;height:6px;border-radius:3px;background:var(--hover);overflow:hidden}.meter i{display:block;height:100%;background:var(--blue);transform-origin:left;transition:transform .1s linear}.transcript .partial{color:var(--ink-2)}.transcript .interviewer .who{color:var(--red)}.status.s-reconnecting{color:var(--pencil)}.iv-opts{border:0;margin:4px 0 10px;padding:0;display:flex;flex-direction:column;gap:8px}.iv-format{display:grid;grid-template-columns:1fr 1fr;grid-gap:4px;gap:4px}.iv-check{display:flex;gap:8px;align-items:center;font-weight:700;font-size:.94rem}.iv-check input{width:18px;height:18px;accent-color:var(--blue)}.report h3{font-size:.95rem;margin:14px 0 6px}.report ul{margin:0;padding-left:18px;font-size:.94rem}.iv-debug{font-size:.8rem;border-top:1px solid var(--rule);padding-top:8px}.iv-debug summary{cursor:pointer;color:var(--pencil)}.iv-debug pre{white-space:pre-wrap;word-break:break-word;max-height:260px;overflow:auto;background:var(--paper);padding:8px;border-radius:var(--r-ctl);margin:6px 0 0}.note{background:var(--blue-tint)}.account{padding-top:40px;max-width:860px}.account h1{font-size:2rem;letter-spacing:-.015em;margin:0 0 4px}.account h2{font-size:1.25rem;margin:36px 0 8px}.account section>p{margin:0 0 10px}.replay{margin-top:28px;display:flex;flex-direction:column;gap:12px}.replay-board{background:var(--sheet);border:1px solid var(--rule);border-radius:var(--r-card);overflow:hidden}.replay-board canvas{display:block;width:100%}.replay-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.replay-bar input[type=range]{flex:1 1;min-width:160px;accent-color:var(--blue)}.replay-said li{display:flex;gap:8px;align-items:baseline}.replay-said li.later{opacity:.45}.replay-said li.now{background:var(--blue-tint);border-radius:6px}.replay-said .at{font:inherit;font-size:.8rem;color:var(--pencil);background:none;border:0;cursor:pointer;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;padding:2px 4px}.legal,.pricing{padding-top:40px;max-width:820px}.legal h1,.pricing h1{font-size:2rem;letter-spacing:-.015em;margin:0 0 10px}.legal h2,.pricing h2{font-size:1.2rem;margin:32px 0 8px}.pricing .intro{color:var(--ink-2);max-width:64ch}.price-table{width:100%;border-collapse:collapse;margin:22px 0 12px;background:var(--sheet);border:1px solid var(--rule);border-radius:var(--r-card)}.price-table td,.price-table th{text-align:left;vertical-align:middle;padding:14px 16px;border-bottom:1px solid var(--rule)}.price-table tr:last-child td,.price-table tr:last-child th{border-bottom:0}.price-table th{font-weight:700}.price-table th span{display:block;font-weight:400;margin-top:2px}.price-table td.n{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-weight:700;white-space:nowrap}.price-table td:last-child{text-align:right}@media (max-width:560px){.price-table th{width:100%}.price-table tr{display:grid;grid-template-columns:1fr auto}.price-table th{grid-column:1/-1;border-bottom:0;padding-bottom:4px}}.buy .note{margin:6px 0 0}ul.plain{padding-left:20px;display:grid;grid-gap:4px;gap:4px}.legal table{width:100%;border-collapse:collapse;font-size:.94rem;margin:8px 0}.legal td,.legal th{text-align:left;vertical-align:top;padding:8px 10px 8px 0;border-bottom:1px solid var(--rule)}.legal p{max-width:70ch}.how .intro{color:var(--ink-2);max-width:64ch}.codes-list{display:grid;grid-template-columns:auto 1fr;grid-gap:4px 14px;gap:4px 14px;margin:8px 0}.codes-list div{display:contents}.codes-list dt{font-weight:700;color:var(--red);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.codes-list dd{margin:0}.iv-avatar{display:inline-flex;align-items:center;gap:12px;min-width:0}.av-face{position:relative;flex:none;display:grid;place-items:center;border-radius:50%;background:var(--sheet);border:1px solid var(--rule);overflow:hidden;transform:translateY(var(--lift,0)) rotate(var(--rot,0));transition:box-shadow .12s}.av-face img{width:82%;height:82%;object-fit:contain}.av-face img.full{width:100%;height:100%;object-fit:cover}.av-face .av-plain{width:60%;height:60%;color:var(--ink)}.iv-avatar.on .av-face{border-color:var(--red);box-shadow:0 0 0 var(--glow,0) color-mix(in srgb,var(--red) 18%,transparent)}.iv-avatar-side{display:flex;flex-direction:column;gap:3px;min-width:0}.iv-avatar-side b{font-size:.95rem}.iv-avatar-state{display:inline-flex;align-items:center;gap:8px;font-size:.85rem;color:var(--pencil)}.iv-avatar.on .iv-avatar-state{color:var(--red);font-weight:700}.eq{display:inline-flex;align-items:center;gap:2px;height:16px}.eq i{width:3px;height:100%;border-radius:2px;background:var(--rule-2);transform-origin:center;transition:transform .06s linear}.iv-avatar.on .eq i{background:var(--red)}.av-settings{border:1px solid var(--rule);border-radius:var(--r-card);padding:10px 12px 12px;margin:4px 0 10px;display:flex;flex-direction:column;gap:8px}.av-settings legend{font-weight:700;font-size:.9rem;padding:0 4px}.av-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(78px,1fr));grid-gap:4px;gap:4px}.av-opt{display:flex;flex-direction:column;align-items:center;gap:4px;font:inherit;font-size:.8rem;padding:6px 4px;border:1px solid transparent;border-radius:var(--r-ctl);background:none;cursor:pointer;color:var(--ink)}.av-opt:hover{background:var(--hover)}.av-opt[aria-checked=true]{border-color:var(--blue);background:var(--blue-tint);font-weight:700}.av-upload{position:relative;align-self:flex-start;cursor:pointer}.av-upload input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%}@media (prefers-reduced-motion:reduce){.av-face{transform:none}.eq i{transition:none}}.iv-live{justify-content:space-between}.iv-you{display:inline-flex;align-items:center;gap:10px;flex:1 1;min-width:140px;justify-content:flex-end}.iv-you .meter{max-width:120px}.welcome{max-width:760px;padding-top:32px;padding-bottom:56px}.welcome h1{margin-bottom:8px}.welcome .lede{color:var(--ink-2);max-width:60ch;margin:0}.applying{display:grid;grid-gap:18px;gap:18px;margin-top:20px}.applying fieldset{border:0;padding:0;margin:0;min-width:0}.applying legend{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.05rem;padding:0;margin-bottom:8px}.ap-chips{display:flex;flex-wrap:wrap;gap:8px}.ap-chip{font:inherit;font-size:.9rem;padding:7px 12px;border-radius:999px;border:1px solid var(--rule-2);background:var(--sheet);color:var(--ink);cursor:pointer;min-height:36px}.ap-chip:hover{background:var(--hover)}.ap-chip[aria-pressed=true]{border-color:var(--blue);background:var(--blue-tint);font-weight:700}.ap-chip:disabled{opacity:.5;cursor:not-allowed}.ap-chip[aria-checked=true]{border-color:var(--blue);background:var(--blue-tint);font-weight:700}.ap-chip.no-iv{color:var(--ink-2)}.ap-chip-tag{font-weight:400;color:var(--pencil);font-size:.82rem}.ap-unis{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:10px;gap:10px;margin-bottom:12px}.ap-uni-tile{display:flex;flex-direction:column;align-items:center;gap:8px;padding:14px 8px;font:inherit;font-weight:700;color:var(--ink);background:var(--sheet);border:1px solid var(--rule-2);border-radius:var(--r-card);cursor:pointer;min-height:44px}.ap-uni-tile:hover:not(:disabled){background:var(--hover)}.ap-uni-tile:disabled{cursor:not-allowed;color:var(--pencil);background:var(--paper);border-style:dashed}.ap-uni-tile:disabled img{filter:grayscale(1);opacity:.45}.ap-tile-why{font-size:.75rem;font-weight:400;margin-top:-4px}.ap-uni-tile[aria-pressed=true]{border-color:var(--blue);background:var(--blue-tint);box-shadow:inset 0 0 0 1px var(--blue)}.ap-uni-tile img{width:40px;height:40px;border-radius:50%;border:1px solid var(--rule);object-fit:cover;background:#fff}.ap-others{align-items:center}.ap-tip{margin:8px 0 0}.ap-courses{padding:14px!important;border:1px solid var(--rule)!important;border-radius:var(--r-card);background:var(--sheet)}.ap-courses legend{float:left;width:100%;margin-bottom:10px;font-size:1rem}.ap-courses legend+*{clear:both}.ap-count{margin:0}.ap-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.ap-actions .ok{color:var(--ok)}.ap-actions .bad{color:var(--red)}.av-sub{font-size:.72rem;color:var(--pencil);font-weight:400;line-height:1.2;text-align:center;max-width:11ch}.your-iv{list-style:none;padding:0;margin:0 0 8px;display:grid;grid-gap:8px;gap:8px}.your-iv li{display:flex;align-items:center;gap:12px;padding:12px;border:1px solid var(--rule);border-radius:var(--r-card);background:var(--sheet)}.your-iv img{width:36px;height:36px;border-radius:50%;border:1px solid var(--rule);object-fit:cover;flex:none;background:#fff}.your-iv div{flex:1 1;min-width:0;display:flex;flex-direction:column;gap:2px;font-size:.92rem}.your-iv b{font-size:1rem}.imp tr.mine td,.imp tr.mine th{background:var(--blue-tint)}@media (max-width:560px){.your-iv li{flex-wrap:wrap;align-items:flex-start}.your-iv div{flex-basis:calc(100% - 48px)}.your-iv .btn-site{margin-left:48px}}.seg button[aria-checked=true]{background:var(--sheet);color:var(--ink);box-shadow:0 1px 2px rgba(20,24,33,.15)}.seg-wide{border:1px solid var(--rule);background:var(--hover);flex-wrap:wrap}.seg-sm button{min-height:32px;padding:0 10px;font-size:.82rem}.seg-sm{border:1px solid var(--rule);background:var(--hover)}.ob-steps{list-style:none;display:flex;gap:6px;margin:0 0 22px;padding:0}.ob-steps li{flex:1 1;display:flex;align-items:center;gap:8px;padding-top:10px;border-top:3px solid var(--rule);color:var(--pencil);font-size:.85rem;min-width:0}.ob-steps li[aria-current=step]{border-color:var(--blue);color:var(--ink);font-weight:700}.ob-steps li.done{border-color:var(--blue)}.ob-dot{flex:none;display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;border:1px solid;font-size:.75rem;font-weight:700}.ob-steps li.done .ob-dot{background:var(--blue);border-color:var(--blue);color:var(--on-blue)}.ob-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ob-optional{font-weight:700;color:var(--ink)}.gr-rows{list-style:none;margin:0 0 12px;padding:0;border:1px solid var(--rule);border-radius:var(--r-card);background:var(--sheet)}.gr-rows li{display:flex;align-items:center;gap:10px;padding:8px 10px 8px 14px;min-height:48px}.gr-rows li+li{border-top:1px solid var(--rule)}.gr-name{flex:1 1;min-width:0}.gr-add input,.gr-rows select,.gr-text,.ps-q textarea{font:inherit;color:var(--ink);background:var(--sheet);border:1px solid var(--rule-2);border-radius:var(--r-ctl)}.gr-rows select{min-width:84px}.gr-rows select,.gr-text{min-height:36px;padding:0 8px}.gr-text{width:90px}.gr-x{font:inherit;font-size:1.3rem;line-height:1;width:36px;height:36px;border:0;background:none;color:var(--pencil);cursor:pointer;border-radius:var(--r-ctl)}.gr-x:hover{background:var(--hover);color:var(--ink)}.gr-add{display:flex;gap:8px;margin-top:10px;max-width:420px}.gr-add input{flex:1 1;min-width:0;min-height:40px;padding:0 12px}.gr-achieved{margin-top:14px}.ps-q{display:grid;grid-gap:6px;gap:6px}.ps-label{font-size:.98rem}.ps-q textarea{width:100%;padding:10px 12px;line-height:1.5;resize:vertical;min-height:96px}.gr-add input:focus,.gr-rows select:focus,.gr-text:focus,.ps-q textarea:focus{outline:2px solid var(--blue);outline-offset:1px}.ps-count{text-align:right}.ps-total{margin:0}.ps-total.bad{color:var(--red);font-weight:700}@media (max-width:560px){.ob-name{display:none}.ob-steps li[aria-current=step] .ob-name{display:inline}}.acc-fold{border:1px solid var(--rule);border-radius:var(--r-card);background:var(--sheet);padding:0 14px;margin-top:10px}.acc-fold summary{cursor:pointer;font-weight:700;padding:12px 0;min-height:44px;box-sizing:border-box}.acc-fold[open]{padding-bottom:14px}.acc-fold .applying{margin-top:4px}.iv-credits{display:grid;grid-gap:8px;gap:8px}.iv-buy{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.iv-buy .buy{display:contents}.iv-upsell{border:1px solid var(--blue);background:var(--blue-tint);border-radius:var(--r-card);padding:14px;display:grid;grid-gap:6px;gap:6px}.iv-upsell p{margin:0}.credit-picker{display:grid;grid-gap:10px;gap:10px;max-width:420px}.cp-options{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:8px;gap:8px}.cp-opt{display:flex;flex-direction:column;align-items:center;gap:2px;padding:10px 4px;font:inherit;color:var(--ink);background:var(--sheet);border:1px solid var(--rule-2);border-radius:var(--r-ctl);cursor:pointer;min-height:56px}.cp-opt b{font-size:1.2rem;line-height:1.1}.cp-opt span{font-size:.82rem;color:var(--pencil)}.cp-opt:hover{background:var(--hover)}.cp-opt[aria-checked=true]{border-color:var(--blue);background:var(--blue-tint);box-shadow:inset 0 0 0 1px var(--blue)}.cp-each{margin:0}.credit-picker .buy .btn-site{width:100%;justify-content:center}.credit-picker.compact .cp-opt{min-height:48px;padding:6px 2px}.price-table .credit-picker{text-align:left;margin-left:auto}.mine{padding-top:36px;display:grid;grid-gap:28px;gap:28px}.mine h2{font-size:1.15rem;margin:0;line-height:1.3}.pg-loading{padding:40px 0}.pg-example{margin:0}.pg-head{display:grid;grid-gap:10px;gap:10px}.pg-head h1:not(.sr){font-size:2rem;margin:0;letter-spacing:-.015em}.pg-countdown{display:grid;grid-gap:6px;gap:6px}.pg-count{font-size:clamp(1.5rem,1.1rem + 1.8vw,2.35rem);font-weight:700;line-height:1.2;letter-spacing:-.015em;margin:0;max-width:28ch;text-wrap:balance}.pg-count b{color:var(--blue)}.pg-count .link{font-size:1rem;font-weight:400;letter-spacing:0}.pg-pace{margin:0;color:var(--ink-2);max-width:60ch}.pg-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;grid-gap:28px 40px;gap:28px 40px;align-items:start}.pg-main,.pg-side{display:grid;grid-gap:28px;gap:28px;min-width:0}.pg-big{font-size:2.1rem;line-height:1;letter-spacing:-.02em;margin-right:2px}.pg-under{margin:6px 0 0}.pg-more{margin:0}.pg-next{background:var(--sheet);border:1px solid var(--rule);border-radius:var(--r-card);padding:20px 22px 22px;display:grid;grid-gap:8px;gap:8px;justify-items:start}.pg-next p{margin:0}.pg-next-what{font-size:.9rem;font-weight:700}.site a.pg-next-title{font-size:clamp(1.35rem,1.1rem + 1vw,1.75rem);font-weight:700;color:var(--ink);text-decoration:none;line-height:1.2}.site a.pg-next-title:hover{text-decoration:underline;-webkit-text-decoration-color:var(--blue);text-decoration-color:var(--blue)}.pg-next-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}.pg-topics{list-style:none;margin:14px 0 0;padding:0;border-top:1px solid var(--rule)}.pg-topics li{display:grid;grid-template-columns:minmax(140px,220px) minmax(0,1fr) auto;align-items:center;grid-gap:14px;gap:14px;padding:9px 2px;border-bottom:1px solid var(--rule)}.pg-topic{font-weight:700;font-size:.95rem}.pg-topic .muted{font-weight:400}.pg-cells{display:flex;flex-wrap:wrap;gap:6px}.site a.pg-cell{width:30px;height:30px;display:grid;place-items:center;border:1px solid var(--rule-2);border-radius:4px;background:var(--sheet);color:var(--red);text-decoration:none}.site a.pg-cell:hover{border-color:var(--blue)}.pg-cell.solved{border-color:var(--rule-2)}.pg-cell.tried{border-style:dashed}.pg-dot{width:8px;height:8px;border-radius:50%;background:var(--blue)}.pg-frac{font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.pg-tick{color:var(--red);flex:none}.pg-sheet.compact .pg-topics li{grid-template-columns:minmax(110px,180px) minmax(0,1fr) auto}.pg-days{list-style:none;margin:12px 0 0;padding:0;display:grid;grid-template-columns:repeat(14,minmax(0,1fr));grid-gap:4px;gap:4px}.pg-days li{aspect-ratio:1;display:grid;place-items:center;font-size:.7rem;font-weight:700;color:var(--pencil);border:1px solid var(--rule);border-radius:4px;background:var(--sheet)}.pg-days li.on{background:var(--blue);border-color:var(--blue);color:var(--on-blue)}.pg-days li.today{outline:2px solid var(--ink);outline-offset:1px}.pg-iv{display:grid;grid-gap:6px;gap:6px}.pg-iv p{margin:0}.pg-pair{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);grid-gap:28px 48px;gap:28px 48px;align-items:start}.pg-trend-table{width:100%;border-collapse:collapse;margin-top:12px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.pg-trend-table td,.pg-trend-table th{text-align:left;padding:10px 8px 10px 0;border-bottom:1px solid var(--rule);vertical-align:top}.pg-trend-table thead th{font-size:.8rem;color:var(--pencil);font-weight:700;padding-top:0}.pg-trend-table tbody th{font-weight:700;font-size:.95rem}.pg-trend-table tbody th .small{display:block;font-weight:400}.pg-trend-table .n{text-align:right;padding-right:16px;white-space:nowrap}.pg-verdict{white-space:nowrap;font-size:.9rem;font-weight:700;color:var(--pencil)}.pg-verdict.good{color:var(--ink)}.pg-verdict .pg-tick{vertical-align:-2px;margin-right:3px}.pg-verdict.bad{color:var(--red)}@media (max-width:900px){.pg-grid,.pg-pair{grid-template-columns:minmax(0,1fr)}}@media (max-width:520px){.pg-sheet.compact .pg-topics li,.pg-topics li{grid-template-columns:minmax(0,1fr) auto auto;gap:10px}.pg-days{gap:3px}}.prow.placeholder .pt{color:var(--pencil)!important}.prow.placeholder .prow-main:after{content:"Placeholder, no real content";font-size:.75rem;font-weight:700;color:var(--red)}.pg-subjects{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:24px 48px;gap:24px 48px;margin-top:16px;align-items:start}.pg-next-h,.pg-subject h3{font-size:1rem;margin:0 0 8px;display:flex;align-items:baseline;gap:6px}.pg-next-h{margin-top:18px}.pg-subject h3 .pg-frac{margin-left:auto}.pg-subject .pg-topics{margin-top:0}.pg-subject .pg-topics li{grid-template-columns:minmax(110px,1fr) auto 36px}.pg-untouched{margin:10px 0 0;line-height:1.7}.pg-stack{display:grid;grid-gap:28px;gap:28px}.pg-levels ol{list-style:none;margin:12px 0 0;padding:0;display:grid;grid-gap:8px;gap:8px}.pg-levels li{display:grid;grid-template-columns:84px minmax(0,1fr) 56px;align-items:center;grid-gap:10px;gap:10px;font-size:.9rem}.pg-level-bar{height:8px;border-radius:4px;background:var(--rule);overflow:hidden}.pg-level-bar i{display:block;height:100%;background:var(--blue);border-radius:4px}.pg-levels .pg-frac{text-align:right}@media (max-width:760px){.pg-subjects{grid-template-columns:minmax(0,1fr)}}.admin{padding-top:32px;display:grid;grid-gap:24px;gap:24px;max-width:980px}.admin h1{margin:0}.admin-stats{border-collapse:collapse;max-width:420px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.admin-stats td,.admin-stats th{text-align:left;padding:6px 16px 6px 0;border-bottom:1px solid var(--rule);font-weight:400}.admin-stats .n,.admin-table .n{text-align:right}.admin-actions form,.admin-find{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap}.admin-actions label,.admin-find label{display:grid;grid-gap:4px;gap:4px;font-size:.9rem}.admin input{font:inherit;min-height:40px;padding:0 10px;border:1px solid var(--rule-2);border-radius:var(--r-ctl);background:var(--sheet);color:var(--ink);min-width:260px}.admin input[type=number]{min-width:0;width:90px}.admin-actions{display:grid;grid-gap:12px;gap:12px;padding:14px;border:1px solid var(--rule);border-radius:var(--r-card);background:var(--sheet)}.admin-user h2{margin:0}.admin-user h3{margin:24px 0 8px;font-size:1rem}.admin-table{width:100%;border-collapse:collapse;font-size:.9rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.admin-table td,.admin-table th{text-align:left;padding:6px 12px 6px 0;border-bottom:1px solid var(--rule)}.admin-table th{color:var(--pencil);font-weight:700}.admin-ref{font-size:.8rem;color:var(--pencil);word-break:break-all}@media (max-width:520px){.pg-trend-table thead{display:none}.pg-trend-table tr{display:grid;grid-template-columns:auto auto 1fr;grid-gap:2px 14px;gap:2px 14px;padding:10px 0;border-bottom:1px solid var(--rule);align-items:baseline}.pg-trend-table td,.pg-trend-table th{border:0;padding:0}.pg-trend-table tbody th{grid-column:1/-1}.pg-trend-table .n{text-align:left;padding:0}.pg-trend-table td.n.muted:after{content:" \2192"}}