:root {
  font-family: "Instrument Sans", "Segoe UI", sans-serif;
  color-scheme: light;
  --bg: #f2f6f6;
  --surface: #fff;
  --ink: #102a37;
  --muted: #4b6570;
  --line: #d4e3e5;
  --accent: #00685e;
  --tint: #e3f5ef;
  --navy: #092836;
  --mint: #a8f3df;
  --warm: #fff1d9;
  --warm-ink: #65420e;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #10232c;
  --surface: #162e38;
  --ink: #e7f4f5;
  --muted: #b0c5cc;
  --line: #375762;
  --accent: #a2eedc;
  --tint: #173f40;
  --warm: #45371d;
  --warm-ink: #ffe2a7;
}
@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] {
    color-scheme: dark;
    --bg: #10232c;
    --surface: #162e38;
    --ink: #e7f4f5;
    --muted: #b0c5cc;
    --line: #375762;
    --accent: #a2eedc;
    --tint: #173f40;
    --warm: #45371d;
    --warm-ink: #ffe2a7;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); line-height: 1.45; }
h1, h2, h3, p { margin: 0 0 .5rem; }
h1 { font-size: clamp(2rem, 4.5vw, 3.5rem); line-height: 1.05; letter-spacing: -.055em; }
h2 { font-size: 1.28rem; letter-spacing: -.028em; line-height: 1.2; }
h3 { font-size: 1.08rem; line-height: 1.3; }
p, .section-title span, .section-caption { color: var(--muted); }
a { color: var(--accent); text-underline-offset: .17em; }
button, select, input { font: inherit; }
button, select {
  color: inherit; cursor: pointer; border: 1px solid var(--line); border-radius: .65rem;
  background: var(--surface); min-height: 44px; padding: .55rem .85rem;
}
button { font-weight: 650; }
button:hover, summary:hover { filter: brightness(.96); }
button:disabled { cursor: default; opacity: .55; }
:focus-visible { outline: 3px solid #2d9cf5; outline-offset: 3px; }
main:focus, h1:focus, .feedback:focus { outline: none; }
.mast {
  color: #edf8fa; background: var(--navy);
  padding-top: env(safe-area-inset-top);
  padding-inline: env(safe-area-inset-left) env(safe-area-inset-right);
}
.top, .nav-inner, main, footer { width: min(1120px, calc(100% - 2.5rem)); margin-inline: auto; }
.top, .tools, .actions, .pills, .section-title, .action-row, footer, .session-top, .question-meta {
  display: flex; align-items: center; gap: .75rem;
}
.top { min-height: 68px; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: .45rem; color: inherit; text-decoration: none; font-weight: 700; line-height: 1.13; }
.brand img { object-fit: contain; }
.brand small { display: block; color: var(--mint); font-size: .75rem; font-weight: 550; }
.tools { gap: .45rem; }
.tools button { color: #eefaff; background: transparent; border-color: #4a6770; }
.offline { color: #cce8e8; font-size: .82rem; display: inline-flex; align-items: center; gap: .4rem; margin-right: .2rem; }
.offline i { display: inline-block; width: .46rem; height: .46rem; border-radius: 50%; background: var(--mint); }
nav:empty { display: none; }
nav { background: var(--surface); border-bottom: 1px solid var(--line); }
.nav-inner { display: flex; gap: .35rem; }
nav button { border: 0; border-radius: 0; background: transparent; padding-inline: 1rem; color: var(--muted); border-bottom: 3px solid transparent; }
nav button[aria-current] { color: var(--accent); border-bottom-color: var(--accent); }
main { min-height: 58vh; padding-block: clamp(1.4rem, 4vw, 3rem); }
.page-head { margin-bottom: 1.6rem; }
.page-head p { max-width: 66ch; margin-top: .85rem; }
.goal-grid, .section-grid, .lower-grid { display: grid; gap: 1rem; }
.goal-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.goal-card {
  text-align: left; position: relative; padding: 1.25rem; min-height: 164px;
  display: flex; flex-direction: column; align-items: flex-start; justify-content: center; gap: .3rem;
  box-shadow: 0 5px 16px #102a3709; border-radius: .95rem; font-weight: 500;
}
.goal-card strong { font-size: .98rem; }
.goal-card span:not(.goal-name):not(.arrow) { color: var(--muted); font-size: .84rem; }
.goal-card:hover { border-color: var(--accent); filter: none; background: var(--tint); }
.goal-name { font-size: clamp(1.35rem, 2.8vw, 2rem); font-weight: 750; letter-spacing: -.04em; color: var(--accent); }
.arrow { position: absolute; top: .75rem; right: .9rem; color: var(--accent); font-size: 1.2rem; }
.core-option { display: flex; gap: .85rem; justify-content: space-between; align-items: center; padding: 1.1rem 0; margin-top: 1rem; border-top: 1px solid var(--line); }
.core-option p { margin: .25rem 0 0; }
.hero {
  background: linear-gradient(115deg, #0a2837 30%, #124951); color: #f5fcfd; padding: clamp(1.3rem, 4vw, 2.5rem);
  border-radius: 1.25rem; display: grid; grid-template-columns: 1.6fr 1fr; gap: 1rem; align-items: end;
}
.hero p { color: #c5e1e4; }
.hero h1 { font-size: clamp(2.5rem, 7vw, 4.75rem); }
.hero .actions { margin-top: 1.35rem; }
.hero .primary { background: var(--mint); color: #0c392f; border-color: var(--mint); }
.hero .secondary { color: #f1fbfc; background: #ffffff12; border-color: #73929a; }
.hero-side { background: #061e286e; border: 1px solid #497279; padding: 1.2rem; border-radius: .85rem; display: grid; gap: .3rem; }
.hero-side strong { font-size: 1.4rem; letter-spacing: -.03em; }
.hero-side span { color: #cde3e4; font-size: .9rem; }
.hero-link { background: none; border: 0; padding-inline: 0; color: var(--mint); justify-self: start; }
.eyebrow { font-size: .77rem; text-transform: uppercase; letter-spacing: .09em; font-weight: 750; }
.section-title { justify-content: space-between; margin-top: 1.7rem; margin-bottom: .7rem; flex-wrap: wrap; }
.section-title h2 { margin: 0; }
.section-grid { grid-template-columns: repeat(auto-fit, minmax(min(100%, 218px), 1fr)); }
.card { border: 1px solid var(--line); background: var(--surface); border-radius: .95rem; padding: 1rem 1.2rem; }
.section-caption { font-size: .88rem; }
.metrics { display: flex; flex-wrap: wrap; gap: .9rem 1.2rem; padding: .6rem 0; }
.metrics div { display: flex; flex-direction: column; }
.metrics strong, .result-number { font-size: 1.6rem; font-weight: 750; color: var(--ink); letter-spacing: -.05em; }
.metrics span { font-size: .82rem; color: var(--muted); }
.lower-grid { grid-template-columns: 1.15fr 1fr; margin-top: 1rem; }
.focus { background: var(--tint); }
.focus .eyebrow { color: var(--accent); }
.focus .primary { margin-top: .3rem; }
.primary { background: var(--accent); border-color: var(--accent); color: var(--surface); }
.secondary[aria-pressed="true"] { color: var(--accent); background: var(--tint); border-color: var(--accent); }
.link-button { background: transparent; border: 0; color: var(--accent); padding-inline: 0; text-align: left; }
.actions, .pills { flex-wrap: wrap; }
.stack { display: grid; gap: .65rem; margin-block: .9rem 1.25rem; }
.action-row { justify-content: space-between; flex-wrap: wrap; }
.action-row p { margin-bottom: 0; }
.study-options, .pills, .guide { margin-block: .85rem 1.15rem; }
.guide p { max-width: 82ch; }
.guide a { display: block; font-size: .86rem; margin: .2rem 0 .8rem; }
.field { display: inline-flex; flex-wrap: wrap; align-items: center; gap: .55rem; font-size: .9rem; }
.field select { background: var(--surface); }
summary { cursor: pointer; min-height: 44px; line-height: 1.35; padding-block: .55rem; font-weight: 700; }
details .actions { margin-top: .5rem; }
.bare, .topic-results { margin: 0; list-style: none; padding: 0; }
.topic-results li { display: grid; grid-template-columns: 1.2fr .8fr 1.4fr .9fr 1.2fr; align-items: center; gap: .5rem; border-top: 1px solid var(--line); padding: .45rem 0; }
.status { color: var(--accent); font-weight: 650; }
.guidance-list { display: grid; grid-template-columns: 1fr 1fr; gap: .85rem; margin: .8rem 0; }
.guidance-list div { min-width: 0; }
.guidance-list dt { font-size: .85rem; color: var(--muted); }
.guidance-list dd { margin: .15rem 0 0; }
.subtopics { padding-left: 1.3rem; margin-bottom: 0; }
.banner { margin-top: 1rem; padding: .55rem; border: 1px dashed var(--line); border-radius: .65rem; text-align: center; color: var(--muted); font-size: .8rem; }
.session-layout { max-width: 780px; }
.session-top, .question-meta { justify-content: space-between; }
.session-top { font-weight: 700; }
.question-meta, .bank-note { color: var(--muted); font-size: .88rem; margin-bottom: .65rem; }
progress { width: 100%; height: .65rem; accent-color: var(--accent); margin-block: .85rem .3rem; }
.question h1 { font-size: clamp(1.35rem, 4.1vw, 2rem); letter-spacing: -.03em; line-height: 1.2; margin-bottom: 1rem; }
fieldset { border: 0; padding: 0; margin: 0 0 1rem; min-width: 0; display: grid; gap: .5rem; }
.option { display: flex; gap: .6rem; align-items: center; min-height: 48px; border: 1px solid var(--line); border-radius: .7rem; padding: .55rem .65rem; cursor: pointer; }
.option:has(input:checked) { border-color: var(--accent); background: var(--tint); }
.option input { accent-color: var(--accent); margin: 0; flex-shrink: 0; }
.letter { color: var(--accent); font-weight: 750; }
.feedback { padding: .8rem; margin-top: .8rem; border-radius: .6rem; background: var(--tint); }
.feedback.check { background: var(--warm); color: var(--warm-ink); }
.feedback p { margin: .25rem 0 0; }
.feedback.check p { color: inherit; }
.review { padding-left: 1.4rem; }
.review li { padding: .8rem 0; border-top: 1px solid var(--line); }
.review button { margin-top: .5rem; }
footer { border-top: 1px solid var(--line); justify-content: space-between; color: var(--muted); font-size: .83rem; padding: 1rem 0 calc(1rem + env(safe-area-inset-bottom)); }
footer span { font-size: .75rem; }
dialog { background: var(--surface); color: var(--ink); border: 1px solid var(--line); border-radius: 1rem; padding: 1.4rem; max-width: min(360px, calc(100vw - 2rem)); }
dialog::backdrop { background: #071c28aa; }
#notice:not(:empty) { position: fixed; z-index: 10; bottom: calc(1rem + env(safe-area-inset-bottom)); left: 50%; transform: translateX(-50%);
  width: max-content; max-width: calc(100% - 2rem); padding: .7rem 1rem; color: #f4fbfd; background: #123340;
  border-radius: .65rem; box-shadow: 0 8px 24px #09283635; pointer-events: none; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
@media (max-width: 580px) {
  .offline { display: none; }
}
@media (max-width: 760px) {
  .goal-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero, .lower-grid { grid-template-columns: 1fr; }
  .topic-results li { grid-template-columns: 1.5fr 1fr; }
}
@media (max-width: 440px) {
  .guidance-list { grid-template-columns: 1fr; }
  .top, .nav-inner, main, footer { width: calc(100% - 1.5rem); }
  .top { min-height: 60px; }
  .brand { font-size: .86rem; gap: .25rem; }
  .brand img { width: 33px; height: 33px; }
  .tools button { padding-inline: .45rem; font-size: .8rem; }
  .offline { display: none; }
  .nav-inner { justify-content: space-between; gap: .1rem; }
  nav button { padding-inline: .38rem; font-size: .82rem; }
  .goal-grid { gap: .6rem; }
  .goal-card { min-height: 145px; padding: .75rem; }
  .goal-card strong { font-size: .88rem; }
  .arrow { font-size: .85rem; top: .45rem; right: .5rem; }
  .core-option, footer { align-items: flex-start; flex-direction: column; }
  .card { padding-inline: .85rem; }
}
@media (max-width: 340px) {
  .goal-card { min-height: 132px; }
  .section-grid { grid-template-columns: 1fr; }
}