@font-face{font-family:"Inter Tight";src:url("/fonts/inter-tight-400.ttf") format("truetype");font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:"Inter Tight";src:url("/fonts/inter-tight-500.ttf") format("truetype");font-style:normal;font-weight:500;font-display:swap}
@font-face{font-family:"Inter Tight";src:url("/fonts/inter-tight-600.ttf") format("truetype");font-style:normal;font-weight:600;font-display:swap}
/* Tokens mirror PSATPal/PSATPal/Design/Notebook.swift. Light values here, dark values below. */
:root {
  color-scheme: light dark;
  --paper: #F7F3EB; --ink: #1A2232; --graphite: #5B5F67; --rule: #DDD8CE; --neutral: #EDE8DE;
  --mark: #3656CA; --action-label: #FFFFFF;
  --math: #5473DD; --reading: #D5816E; --mint: #60B99A; --math-wash: #EDF1FF;
  --surface-raised: #E2D8F2;
  --correct: #23674F; --correct-wash: #DEF3E9; --incorrect: #9F493D; --incorrect-wash: #FCF0EB;
  --radius-control: 13px; --radius-button: 16px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #171B23; --ink: #EFF2F8; --graphite: #AFB8CA; --rule: #39404F; --neutral: #2D3440;
    --mark: #AEBFFF; --action-label: #1B2A59;
    --math: #93ADFF; --reading: #F0AC9B; --mint: #8ED6BA; --math-wash: #28334F;
    --surface-raised: #3E344F;
    --correct: #B5EAD4; --correct-wash: #24473A; --incorrect: #F5AC9C; --incorrect-wash: #48322E;
  }
}
* { box-sizing: border-box; }
/* Type scale: display 34/41, section 20/28, body 17/24, meta 13/18. */
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1.0625rem/1.412 "Inter Tight", sans-serif; -webkit-text-size-adjust: 100%; }
button,input,summary { font: inherit; }
button,a,summary { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
a { color: var(--mark); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible,button:focus-visible,summary:focus-visible { outline: 2px solid var(--mark); outline-offset: 4px; border-radius: 4px; }
header,main,footer { max-width: 1112px; margin: auto; padding: 24px; }
header { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 24px; padding-top: 20px; padding-bottom: 20px; }
nav { display: flex; flex-wrap: wrap; gap: 24px; }
nav a { display: inline-flex; align-items: center; min-height: 44px; color: var(--graphite); text-decoration: none; }
nav [aria-current=page] { color: var(--mark); font-weight: 500; }
/* The app's compact wordmark: four tilted dots, then "PSAT Pal" in section type. */
.brand { display: inline-flex; align-items: center; gap: 5px; min-height: 44px; color: var(--ink); text-decoration: none; font-size: 1.25rem; line-height: 1.4; font-weight: 500; }
.brand::before { content: ""; width: 23px; height: 23px; margin-right: 5px; transform: rotate(-8deg);
  background: radial-gradient(circle 5px at 5px 5px, var(--math) 96%, #0000), radial-gradient(circle 5px at 18px 5px, var(--reading) 96%, #0000),
              radial-gradient(circle 5px at 5px 18px, var(--mint) 96%, #0000), radial-gradient(circle 5px at 18px 18px, var(--neutral) 96%, #0000); }
.brand span:first-child { text-transform: uppercase; }
.brand .pal { text-transform: capitalize; }
h1 { font-size: 2.125rem; line-height: 1.206; font-weight: 400; margin: 0 0 24px; }
h2,h3 { font-size: 1.25rem; line-height: 1.4; font-weight: 500; margin: 0 0 12px; }
p { margin: 0 0 16px; }
.meta,footer,.eyebrow { font-size: .8125rem; line-height: 1.385; color: var(--graphite); }
.eyebrow,.welcome>.meta:first-child { margin-bottom: 12px; }
/* NotebookPanel: lavender raised surface. */
.panel,.feedback { background: var(--surface-raised); border-radius: var(--radius-button); padding: 24px; }
.panel>:last-child,.feedback>:last-child { margin-bottom: 0; }
.intro { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,430px); gap: 48px; align-items: start; padding: 16px 0 48px; }
.welcome { max-width: 460px; }
.welcome .panel { margin: 24px 0; }
/* PracticeSessionSegments: nine capsules, 6pt tall. */
.set-mark { display: flex; gap: 5px; margin-bottom: 24px; }
.set-mark span { flex: 1; height: 6px; border-radius: 3px; background: var(--neutral); }
.sample-heading { display: grid; justify-items: start; gap: 16px; margin-bottom: 24px; }
.sample-heading h2 { margin: 0; }
.subject { font-size: .8125rem; line-height: 1.385; font-weight: 500; background: var(--math-wash); padding: 8px 12px; border-radius: var(--radius-control); }
.practice fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.practice legend { font-weight: 600; margin-bottom: 24px; padding: 0; }
/* ChoiceRow and ScantronOval. */
.choice { position: relative; display: grid; grid-template-columns: 28px minmax(0,1fr) auto; align-items: center; gap: 4px 12px; min-height: 52px; padding: 6px 12px; margin-bottom: 8px; background: var(--surface-raised); border: 1px solid var(--rule); border-radius: var(--radius-control); cursor: pointer; }
.choice input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: inherit; }
.oval { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; border: 2px solid var(--graphite); border-radius: 14px; background: var(--paper); color: var(--graphite); font-size: .8125rem; font-weight: 500; line-height: 1; transition: background-color 350ms, color 350ms, border-color 150ms; }
.choice:not(.locked):has(input:checked) { background: var(--math-wash); border-color: var(--mark); box-shadow: inset 0 0 0 1px var(--mark); }
.choice:not(.locked):has(input:checked) .oval { background: var(--mark); border-color: var(--mark); color: var(--action-label); }
.choice:has(input:focus-visible) { outline: 2px solid var(--mark); outline-offset: 3px; }
.choice.correct { background: var(--correct-wash); }
.choice.correct .oval { background: var(--correct); border-color: var(--correct); color: var(--paper); }
.choice.miss { background: var(--incorrect-wash); }
.choice.miss .oval { color: var(--incorrect); border-color: var(--incorrect); }
.choice.locked { cursor: default; }
.answer-state { font-size: .8125rem; line-height: 1.385; font-weight: 500; }
.answer-state:empty { display: none; }
.correct .answer-state { color: var(--correct); }
.miss .answer-state { color: var(--incorrect); }
.feedback { margin-top: 24px; }
.feedback p { margin-bottom: 12px; }
summary { display: flex; justify-content: space-between; align-items: center; gap: 16px; cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; content: "+" / ""; color: var(--mark); font-size: 1.5rem; line-height: 1; font-weight: 400; }
details[open]>summary::after { content: "\2212"; content: "\2212" / ""; }
.why summary { min-height: 44px; color: var(--mark); font-weight: 500; }
.why p { margin: 8px 0 12px; }
/* NotebookDock: primary action. */
.dock { display: block; width: 100%; min-height: 52px; margin-top: 24px; padding: 12px 16px; border: 0; border-radius: var(--radius-button); background: var(--mark); color: var(--action-label); font-weight: 500; transition: background-color 120ms, color 120ms; }
.dock:disabled { cursor: default; background: var(--rule); color: var(--graphite); }
.reset { border: 0; background: none; color: var(--mark); min-height: 44px; margin: 16px 0 0; padding: 0; font-weight: 500; }
.sample-note { margin: 16px 0 0; }
.routine { padding: 16px 0; }
.routine-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
/* Settings-style hairline rows. */
.links { max-width: 560px; margin: 16px 0 24px; }
.links a { display: flex; justify-content: space-between; align-items: center; gap: 16px; min-height: 52px; padding: 12px 0; border-bottom: 1px solid var(--rule); color: var(--ink); text-decoration: none; }
.links a::after { content: "\203A"; content: "\203A" / ""; color: var(--graphite); font-size: 1.5rem; line-height: 1; }
.disclaimer { max-width: 640px; }
footer { border-top: 1px solid var(--rule); margin-top: 24px; padding-top: 24px; padding-bottom: 32px; }
footer p { max-width: 760px; }
.document { max-width: 728px; padding-top: 16px; }
.document h2 { margin-top: 32px; }
.document details { border-bottom: 1px solid var(--rule); }
.document summary { min-height: 52px; padding: 12px 0; }
.document details p { padding-bottom: 8px; }
.document .note { border-top: 1px solid var(--rule); padding-top: 16px; margin-top: 32px; color: var(--graphite); }
.skip { position: absolute; left: 16px; top: -100px; background: var(--paper); color: var(--mark); padding: 12px; z-index: 5; }
.skip:focus { top: 8px; }
[hidden] { display: none!important; }
@media(max-width: 760px) {
  .intro { grid-template-columns: 1fr; gap: 32px; padding-top: 8px; }
  .routine-columns { grid-template-columns: 1fr; }
}
@media(max-width: 360px) { header,main,footer { padding-left: 16px; padding-right: 16px; } nav { gap: 16px; } }
@media(prefers-reduced-motion: reduce) {
  *,*::before,*::after { transition: none!important; scroll-behavior: auto!important; }
}