:root,
html[data-theme="light"] {
  color-scheme: light;
  --bg: #f8f6f1;
  --surface: #fffdf9;
  --panel: #f2eee7;
  --code-bg: #ede8df;
  --text: #28231f;
  --muted: #625b53;
  --subtle: #82786d;
  --border: #d9d2c8;
  --border-strong: #b7ac9f;
  --accent: #a94e32;
  --accent-soft: #f7e7dc;
  --button-bg: #db8b69;
  --button-text: #231913;
  --correct: #286c48;
  --correct-bg: #e7f2e8;
  --wrong: #a73f32;
  --wrong-bg: #faeae5;
  --shadow: 0 18px 46px rgba(67, 49, 35, .055);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #1c1b18;
  --surface: #25231f;
  --panel: #2d2a25;
  --code-bg: #34312b;
  --text: #f4efe6;
  --muted: #c4bbaf;
  --subtle: #a59a8c;
  --border: #4b453d;
  --border-strong: #71675b;
  --accent: #f1a17f;
  --accent-soft: #433027;
  --button-bg: #e59a78;
  --button-text: #241b16;
  --correct: #99d5a8;
  --correct-bg: #243d2e;
  --wrong: #f0a08d;
  --wrong-bg: #462c27;
  --shadow: 0 20px 52px rgba(0, 0, 0, .13);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: "SFMono-Regular", "Cascadia Code", "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  font-synthesis: none;
  transition: background-color .2s ease, color .2s ease;
}
button, input { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .43; }
button:focus-visible, a:focus-visible, input:focus-visible, .option:focus-within, .count-option:focus-within {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}
a { color: inherit; }
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: radial-gradient(var(--border) .6px, transparent .6px);
  background-size: 22px 22px;
  opacity: .36;
}
.page-frame { min-height: 100vh; display: flex; flex-direction: column; }
.site-header, .site-footer, #app { width: min(1240px, calc(100% - 64px)); margin-inline: auto; }
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 86px;
  padding: 17px 0;
  border-bottom: 1px solid var(--border);
}
.brand { display: inline-flex; align-items: center; gap: 12px; min-width: 0; text-decoration: none; }
.brand-mark {
  display: grid;
  place-items: center;
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  border: 1px solid var(--accent);
  border-radius: 7px;
  background: var(--accent-soft);
  color: var(--accent);
  font: 700 18px ui-monospace, "SFMono-Regular", monospace;
  letter-spacing: -.13em;
}
.brand-copy { display: grid; gap: 1px; min-width: 0; line-height: 1.32; }
.brand-copy strong { overflow: hidden; font-size: 15px; letter-spacing: .02em; text-overflow: ellipsis; white-space: nowrap; }
.brand-copy small { overflow: hidden; color: var(--subtle); font-size: 11px; letter-spacing: .03em; text-overflow: ellipsis; white-space: nowrap; }
.header-actions { display: flex; align-items: center; gap: 18px; }
.header-note { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 12px; white-space: nowrap; }
.live-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-width: 112px;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 7px;
  background: var(--surface);
  color: var(--text);
  font-size: 12px;
  font-weight: 650;
  transition: border-color .2s ease, background-color .2s ease;
}
.theme-toggle:hover { border-color: var(--accent); background: var(--accent-soft); }
.theme-icon { font: 600 18px ui-monospace, monospace; line-height: 1; color: var(--accent); }
#app { flex: 1; }
.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 25px 0 33px;
  border-top: 1px solid var(--border);
  color: var(--subtle);
  font-size: 11px;
  line-height: 1.8;
}
.site-footer span:last-child { max-width: 570px; text-align: right; }
.eyebrow, .micro-label, .kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font: 700 11px ui-monospace, "SFMono-Regular", monospace;
  letter-spacing: .09em;
  text-transform: uppercase;
}
.eyebrow::before { content: ">"; font-size: 15px; line-height: 1; }
.mono { font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; }
.serif { font-family: inherit; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 10px 17px;
  border: 1px solid transparent;
  border-radius: 7px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform .18s ease, background-color .18s ease, border-color .18s ease;
}
.button:not(:disabled):hover { transform: translateY(-2px); }
.button-primary { background: var(--button-bg); color: var(--button-text); }
.button-primary:not(:disabled):hover { background: var(--accent); color: var(--surface); }
.button-blue { background: var(--text); color: var(--bg); }
.button-blue:not(:disabled):hover { background: var(--accent); color: var(--surface); }
.button-outline { border-color: var(--border-strong); background: var(--surface); color: var(--text); }
.button-outline:not(:disabled):hover { border-color: var(--accent); }
.button-quiet { background: var(--panel); color: var(--text); }
.text-button {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  border: 0;
  padding: 8px 0;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  text-align: left;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.text-button:hover { color: var(--accent); }
.arrow { font: 500 19px ui-monospace, monospace; line-height: 1; }

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(370px, .96fr);
  gap: 42px;
  align-items: stretch;
  min-height: 550px;
  padding: 53px 0 42px;
}
.home-intro { display: flex; flex-direction: column; align-items: flex-start; padding: 27px 0 12px; }
.home-intro h1 {
  margin: 32px 0 20px;
  font-size: clamp(44px, 4.5vw, 66px);
  font-weight: 650;
  line-height: 1.25;
  letter-spacing: -.055em;
}
.home-intro h1 em { color: var(--accent); font-style: normal; }
.home-intro p { max-width: 510px; margin: 0; color: var(--muted); font-size: 16px; line-height: 1.9; }
.home-intro::after { content: "// PRACTICE MODE"; margin-top: auto; padding-top: 35px; color: var(--subtle); font: 700 11px ui-monospace, monospace; letter-spacing: .07em; }
.stat-strip { display: flex; flex-wrap: wrap; gap: 0; margin-top: 25px; padding-top: 18px; border-top: 1px dashed var(--border-strong); }
.stat-strip div { display: flex; flex-direction: column; gap: 2px; min-width: 100px; padding: 0 24px; border-left: 1px solid var(--border); }
.stat-strip div:first-child { padding-left: 0; border-left: 0; }
.stat-strip strong { font: 600 25px ui-monospace, monospace; letter-spacing: -.05em; }
.stat-strip span { color: var(--subtle); font-size: 11px; }
.start-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 475px;
  overflow: hidden;
  padding: 30px 32px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.start-panel::before { content: ""; position: absolute; top: 0; right: 0; left: 0; height: 4px; background: var(--accent); }
.start-panel::after { content: "}"; position: absolute; top: 57px; right: 17px; color: var(--accent-soft); font: 400 220px ui-monospace, monospace; line-height: 1; pointer-events: none; }
.panel-top { position: relative; z-index: 1; display: flex; justify-content: space-between; gap: 12px; padding-bottom: 15px; border-bottom: 1px dashed var(--border); color: var(--subtle); font: 700 11px ui-monospace, monospace; letter-spacing: .05em; }
.panel-top strong { color: var(--accent); font-weight: 700; }
.panel-title { position: relative; z-index: 1; margin: 53px 0 25px; font-size: 23px; font-weight: 650; }
.count-options { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px; }
.count-option { position: relative; min-height: 101px; border: 1px solid var(--border-strong); border-radius: 7px; background: var(--surface); transition: border-color .18s ease, transform .18s ease; }
.count-option:hover { transform: translateY(-2px); border-color: var(--accent); }
.count-option:has(input:checked) { border-color: var(--accent); }
.count-option input { position: absolute; z-index: 2; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.count-option span { display: flex; flex-direction: column; gap: 3px; height: 100%; padding: 17px 15px; pointer-events: none; }
.count-option input:checked + span { background: var(--accent-soft); color: var(--accent); }
.count-option strong { font: 650 34px ui-monospace, monospace; letter-spacing: -.08em; line-height: 1.1; }
.count-option small { font-size: 12px; }
.start-panel .button { position: relative; z-index: 1; justify-content: space-between; width: 100%; margin-top: auto; }
.panel-caption { position: relative; z-index: 1; margin-top: 13px; color: var(--subtle); font-size: 12px; }
.resume-count { position: relative; z-index: 1; margin: 0 0 8px; color: var(--accent); font-size: 66px; font-weight: 650; line-height: 1; letter-spacing: -.09em; }
.resume-count span { color: var(--subtle); font-size: 26px; }
.resume-caption { position: relative; z-index: 1; margin: 0; color: var(--muted); font-size: 13px; }
.abandon-button { position: relative; z-index: 1; }
.coverage-card {
  display: grid;
  grid-template-columns: 146px minmax(0, 1fr) auto;
  align-items: center;
  gap: 29px;
  padding: 26px 32px;
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.coverage-disc { position: relative; display: grid; place-items: center; width: 142px; height: 142px; border-radius: 50%; background: conic-gradient(var(--accent) var(--coverage), var(--code-bg) 0); }
.coverage-disc::after { content: ""; position: absolute; inset: 11px; border-radius: 50%; background: var(--surface); }
.coverage-disc > span { position: relative; z-index: 1; display: grid; justify-items: center; line-height: 1.2; }
.coverage-disc strong { font: 650 30px ui-monospace, monospace; letter-spacing: -.07em; }
.coverage-disc small { margin-top: 5px; color: var(--subtle); font-size: 11px; }
.coverage-copy h2 { margin: 11px 0 5px; font-size: clamp(19px, 2.2vw, 27px); font-weight: 650; letter-spacing: -.035em; }
.coverage-copy h2 strong { color: var(--accent); font: inherit; }
.coverage-copy p { margin: 0; color: var(--muted); font-size: 13px; }
.coverage-total { display: grid; gap: 2px; min-width: 142px; padding-left: 28px; border-left: 1px solid var(--border); }
.coverage-total span { color: var(--subtle); font-size: 12px; }
.coverage-total strong { font: 650 35px ui-monospace, monospace; letter-spacing: -.08em; line-height: 1.2; }
.coverage-total small { color: var(--subtle); font-size: 11px; white-space: nowrap; }
.coverage-note { margin: 10px 0 25px; color: var(--subtle); font-size: 11px; }
.home-below { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; margin-bottom: 65px; }
.step-card { padding: 18px 2px 20px; border-top: 1px solid var(--border-strong); }
.step-card span { color: var(--accent); font: 700 11px ui-monospace, monospace; }
.step-card h3 { margin: 12px 0 6px; font-size: 16px; }
.step-card p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.75; }
.return-card { display: flex; align-items: center; justify-content: space-between; gap: 25px; margin-top: 30px; padding: 19px 22px; border: 1px solid var(--border); border-left: 3px solid var(--accent); border-radius: 6px; background: var(--surface); }
.return-card h2 { margin: 5px 0 3px; font-size: 18px; }
.return-card p { margin: 0; color: var(--muted); font-size: 16px; }
.return-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.notice { margin: 22px 0 0; padding: 13px 15px; border: 1px solid var(--accent); border-radius: 6px; background: var(--accent-soft); color: var(--text); font-size: 13px; }

.quiz-heading { display: flex; justify-content: space-between; align-items: end; gap: 20px; padding: 38px 0 19px; }
.quiz-heading h1 { margin: 12px 0 0; font-size: clamp(28px, 3vw, 42px); font-weight: 650; letter-spacing: -.045em; }
.quiz-heading .counter { font: 600 44px ui-monospace, monospace; letter-spacing: -.1em; white-space: nowrap; }
.quiz-heading .counter small { color: var(--subtle); font-size: 21px; }
.progress-track { width: 100%; height: 5px; overflow: hidden; border-radius: 20px; background: var(--code-bg); }
.progress-fill { width: var(--progress, 0%); height: 100%; background: var(--accent); transition: width .25s ease; }
.quiz-layout { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 20px; align-items: start; padding: 21px 0 61px; }
.question-card { min-height: 515px; padding: 32px 37px 27px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface); }
.question-meta { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; }
.tag { display: inline-flex; align-items: center; min-height: 26px; padding: 3px 9px; border: 1px solid var(--border); border-radius: 4px; background: var(--code-bg); color: var(--text); font-size: 11px; font-weight: 650; }
.tag.category { background: var(--surface); color: var(--muted); }
.tag.hint { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.question-index { display: block; margin: 27px 0 9px; color: var(--accent); font: 700 11px ui-monospace, monospace; letter-spacing: .06em; }
.question-stem { margin: 0 0 27px; font-size: clamp(19px, 2vw, 24px); font-weight: 650; line-height: 1.75; overflow-wrap: anywhere; }
.option-list { display: grid; gap: 9px; }
.option { position: relative; display: grid; grid-template-columns: 34px 1fr 18px; align-items: center; gap: 12px; min-height: 62px; padding: 11px 15px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); cursor: pointer; transition: border-color .18s ease, background-color .18s ease; }
.option:hover { border-color: var(--accent); }
.option:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.option input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.option-letter { display: grid; place-items: center; width: 32px; height: 32px; border: 1px solid var(--border-strong); border-radius: 4px; color: var(--muted); font: 700 14px ui-monospace, monospace; }
.option:has(input:checked) .option-letter { border-color: var(--accent); background: var(--accent); color: var(--bg); }
.option-text { font-size: 16px; line-height: 1.65; overflow-wrap: anywhere; }
.option-tick { color: var(--accent); font-weight: 700; opacity: 0; }
.option:has(input:checked) .option-tick { opacity: 1; }
.question-controls { display: flex; justify-content: space-between; gap: 10px; margin-top: 28px; }
.question-controls .button { min-width: 122px; }
.question-controls .next-button { margin-left: auto; }
.navigator { padding: 23px 20px; border: 1px solid var(--border); border-radius: 9px; background: var(--panel); }
.navigator h2 { margin: 0 0 3px; font-size: 16px; }
.navigator p { margin: 0 0 18px; color: var(--subtle); font-size: 12px; }
.nav-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 6px; }
.nav-item { min-width: 0; min-height: 44px; border: 1px solid var(--border-strong); border-radius: 5px; background: var(--surface); color: var(--muted); font: 700 12px ui-monospace, monospace; }
.nav-item.answered { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.nav-item.current { outline: 2px solid var(--accent); outline-offset: 2px; }
.legend { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 18px; color: var(--subtle); font-size: 11px; }
.legend span { display: flex; align-items: center; gap: 5px; }
.legend i { width: 9px; height: 9px; border: 1px solid var(--border-strong); background: var(--surface); }
.legend span:first-child i { border-color: var(--accent); background: var(--accent-soft); }
.navigator .button { justify-content: space-between; width: 100%; margin-top: 22px; }
.navigator .text-button { margin-top: 7px; font-size: 12px; }

.result-top { display: grid; grid-template-columns: minmax(0, 1fr) 210px; gap: 24px; align-items: center; margin-top: 37px; padding: 39px 42px; border: 1px solid var(--border-strong); border-top: 4px solid var(--accent); border-radius: 9px; background: var(--surface); }
.result-top h1 { margin: 18px 0 10px; font-size: clamp(31px, 3.6vw, 49px); font-weight: 650; letter-spacing: -.055em; }
.result-top p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.8; }
.score-total { color: var(--subtle); font-size: .62em; }
.result-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 26px; }
.score-disc { position: relative; display: grid; place-items: center; width: 190px; height: 190px; margin: auto; border-radius: 50%; background: conic-gradient(var(--accent) var(--score), var(--code-bg) 0); }
.score-disc::after { content: ""; position: absolute; inset: 10px; border-radius: 50%; background: var(--surface); }
.score-disc > span { z-index: 1; display: grid; text-align: center; }
.score-disc strong { font: 650 46px ui-monospace, monospace; letter-spacing: -.08em; }
.score-disc small { color: var(--subtle); font-size: 12px; }
.result-section-header { display: flex; justify-content: space-between; align-items: end; gap: 18px; padding: 42px 0 17px; }
.result-section-header h2 { margin: 8px 0 0; font-size: 25px; }
.result-section-header > span { color: var(--subtle); font-size: 12px; }
.result-list { display: grid; gap: 12px; padding-bottom: 65px; }
.result-card { padding: 22px 26px 24px; border: 1px solid var(--border); border-left: 4px solid var(--correct); border-radius: 7px; background: var(--surface); }
.result-card.wrong { border-left-color: var(--wrong); }
.result-card-head { display: flex; justify-content: space-between; align-items: center; gap: 13px; }
.result-state { color: var(--correct); font-size: 12px; font-weight: 700; white-space: nowrap; }
.result-card.wrong .result-state { color: var(--wrong); }
.result-stem { margin: 16px 0 18px; font-size: 17px; font-weight: 650; line-height: 1.75; }
.result-options { display: grid; gap: 6px; }
.result-option { display: flex; align-items: baseline; gap: 9px; padding: 8px 11px; border: 1px solid var(--border); border-radius: 4px; font-size: 16px; line-height: 1.55; overflow-wrap: anywhere; }
.result-option.is-correct { border-color: var(--correct); background: var(--correct-bg); }
.result-option.is-extra { border-color: var(--wrong); background: var(--wrong-bg); }
.result-option strong { min-width: 19px; font: 700 13px ui-monospace, monospace; }
.result-option em { margin-left: auto; color: var(--correct); font-size: 11px; font-style: normal; font-weight: 700; white-space: nowrap; }
.result-option.is-extra em { color: var(--wrong); }
.answer-line { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 17px; color: var(--muted); font-size: 16px; }
.answer-line strong { color: var(--text); }

.confirm-dialog { width: min(450px, calc(100% - 30px)); max-width: none; padding: 0; border: 1px solid var(--border-strong); border-radius: 9px; background: var(--surface); color: var(--text); box-shadow: 0 30px 80px rgba(0,0,0,.25); }
.confirm-dialog::backdrop { background: rgba(18, 16, 14, .62); }
.dialog-topline { height: 4px; background: var(--accent); }
.dialog-body { padding: 29px; }
.dialog-body h2 { margin: 17px 0 10px; font-size: 23px; }
.dialog-body p { color: var(--muted); font-size: 16px; line-height: 1.8; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 9px; margin-top: 23px; }
.toast { position: fixed; z-index: 20; bottom: 22px; left: 50%; transform: translate(-50%, 18px); padding: 11px 16px; border: 1px solid var(--border-strong); border-radius: 6px; background: var(--surface); color: var(--text); font-size: 12px; box-shadow: var(--shadow); opacity: 0; pointer-events: none; transition: opacity .2s ease, transform .2s ease; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.loading-screen { display: grid; place-content: center; justify-items: center; min-height: 470px; color: var(--muted); }
.loading-bar { width: 155px; height: 3px; background: linear-gradient(90deg, var(--accent) 45%, var(--border) 45%); animation: loading 1.3s ease-in-out infinite alternate; }
.no-script { position: fixed; inset: 0; z-index: 99; display: grid; place-items: center; padding: 20px; background: var(--bg); color: var(--text); text-align: center; }
@keyframes loading { to { background-position: 155px 0; } }

@media (max-width: 940px) {
  .home-hero { grid-template-columns: minmax(0, 1fr) minmax(315px, .95fr); gap: 24px; }
  .home-intro h1 { font-size: clamp(41px, 5vw, 56px); }
  .start-panel { padding: 25px; }
  .stat-strip div { min-width: 85px; padding: 0 15px; }
  .coverage-card { gap: 20px; padding: 23px; }
  .coverage-total { min-width: 120px; padding-left: 20px; }
  .quiz-layout { grid-template-columns: minmax(0, 1fr) 230px; gap: 14px; }
  .question-card { padding: 27px; }
}

@media (max-width: 720px) {
  .site-header, .site-footer, #app { width: min(100% - 32px, 600px); }
  .site-header { min-height: 72px; padding: 12px 0; }
  .brand-copy strong { font-size: 13px; }
  .brand-copy small { font-size: 10px; }
  .brand-mark { flex-basis: 34px; width: 34px; height: 34px; font-size: 16px; }
  .header-actions { gap: 8px; }
  .header-note { display: none; }
  .theme-toggle { min-width: 44px; width: 44px; padding: 0; }
  .theme-toggle #theme-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .home-hero { display: flex; flex-direction: column; gap: 23px; min-height: 0; padding: 25px 0 27px; }
  .home-intro { padding: 12px 0 0; }
  .home-intro h1 { margin: 22px 0 13px; font-size: clamp(38px, 8vw, 51px); }
  .home-intro p { font-size: 16px; }
  .home-intro::after { display: none; }
  .stat-strip { margin-top: 25px; padding-top: 13px; }
  .stat-strip strong { font-size: 22px; }
  .start-panel { min-height: 390px; padding: 22px; }
  .panel-title { margin-top: 43px; }
  .coverage-card { grid-template-columns: 112px minmax(0, 1fr); gap: 17px; padding: 19px; }
  .coverage-disc { width: 110px; height: 110px; }
  .coverage-disc::after { inset: 9px; }
  .coverage-disc strong { font-size: 24px; }
  .coverage-copy h2 { font-size: 19px; line-height: 1.4; }
  .coverage-copy p { font-size: 12px; }
  .coverage-total { grid-column: 1 / -1; display: flex; align-items: baseline; gap: 10px; padding: 12px 0 0; border-left: 0; border-top: 1px solid var(--border); }
  .coverage-total strong { font-size: 25px; }
  .coverage-total small { white-space: normal; }
  .coverage-note { margin-bottom: 30px; }
  .home-below { grid-template-columns: 1fr; gap: 0; margin-bottom: 40px; }
  .step-card { padding: 15px 0; }
  .return-card { display: block; margin-top: 22px; }
  .return-actions { margin-top: 14px; }
  .quiz-heading { padding: 27px 0 16px; }
  .quiz-heading h1 { font-size: 26px; }
  .quiz-heading .counter { font-size: 35px; }
  .quiz-heading .counter small { font-size: 16px; }
  .quiz-layout { display: flex; flex-direction: column; padding: 16px 0 42px; }
  .question-card { order: 1; width: 100%; min-height: 0; padding: 21px 18px; }
  .navigator { order: 2; width: 100%; padding: 19px; }
  .question-index { margin-top: 23px; }
  .question-stem { font-size: 19px; }
  .option { min-height: 60px; padding: 10px 11px; grid-template-columns: 32px 1fr 16px; gap: 9px; }
  .question-controls .button { min-width: 0; padding-inline: 12px; }
  .result-top { grid-template-columns: 1fr; gap: 18px; margin-top: 24px; padding: 25px 21px; }
  .score-disc { grid-row: 1; width: 145px; height: 145px; margin: 0; }
  .score-disc strong { font-size: 36px; }
  .result-top h1 { margin-top: 11px; font-size: 33px; }
  .result-actions .button { flex: 1; min-width: 130px; }
  .result-section-header { padding-top: 34px; }
  .result-card { padding: 19px 15px; }
  .result-card-head { align-items: flex-start; }
  .result-stem { font-size: 16px; }
  .site-footer { display: block; padding: 21px 0 25px; }
  .site-footer span { display: block; }
  .site-footer span:last-child { max-width: none; margin-top: 7px; text-align: left; }
}

@media (max-width: 400px) {
  .brand-copy small { display: none; }
  .home-intro h1 { font-size: 37px; }
  .count-option span { padding: 14px 9px; }
  .count-option strong { font-size: 30px; }
  .result-card-head { display: block; }
  .result-state { display: block; margin-top: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}