:root {
  --msu-green: #18453b;
  --forest: #123b33;
  --forest-deep: #0b2b26;
  --pine: #2e6658;
  --moss: #7f9a67;
  --fern: #b9c8a8;
  --cedar: #8a4828;
  --sun: #e6b94f;
  --cream: #f6f3e9;
  --paper: #fffdf7;
  --ink: #15251f;
  --muted: #5d6b65;
  --line: #d7ddd4;
  --line-dark: #bfcbbf;
  --correct: #1f7156;
  --correct-soft: #e5f3ea;
  --close: #9a6815;
  --close-soft: #fbf0cf;
  --incorrect: #a43f36;
  --incorrect-soft: #f9e7e4;
  --shadow-sm: 0 8px 24px rgb(16 46 38 / 8%);
  --shadow-lg: 0 24px 70px rgb(9 42 34 / 18%);
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;
  --content: 1180px;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: Iowan Old Style, Baskerville, "Times New Roman", serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 10% 12%, rgb(185 200 168 / 28%), transparent 30rem),
    linear-gradient(180deg, #faf8f1 0%, var(--cream) 100%);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

button,
input,
select {
  font: inherit;
}

button,
select {
  cursor: pointer;
}

a {
  color: inherit;
}

[hidden] {
  display: none !important;
}

:focus-visible {
  outline: 3px solid var(--forest-deep);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 1rem;
  transform: translateY(-160%);
  border-radius: 8px;
  background: var(--paper);
  color: var(--forest-deep);
  font-weight: 800;
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.page-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.site-header,
.site-footer,
.gate-layout,
.view-panel {
  width: min(100% - 2rem, var(--content));
  margin-inline: auto;
}

.site-header {
  min-height: 84px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid rgb(24 69 59 / 14%);
}

.wordmark {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--forest);
  text-decoration: none;
}

.wordmark-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 2px solid var(--forest);
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
}

.wordmark strong,
.wordmark small,
.header-title span,
.header-title small {
  display: block;
}

.wordmark strong {
  line-height: 1;
  letter-spacing: 0.01em;
}

.wordmark small,
.header-title small {
  margin-top: 0.18rem;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.header-title {
  justify-self: center;
  text-align: center;
}

.header-title span {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
}

#lock-button {
  justify-self: end;
}

.gate-layout {
  min-height: calc(100vh - 154px);
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  align-items: stretch;
  gap: 0;
  padding-block: clamp(2rem, 7vh, 5.5rem);
}

.gate-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 520px;
  padding: clamp(2rem, 6vw, 5rem);
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  background: var(--paper);
  box-shadow: var(--shadow-lg);
}

.gate-card::after {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  right: -110px;
  top: -110px;
  border: 44px solid rgb(127 154 103 / 15%);
  border-radius: 50%;
  pointer-events: none;
}

.eyebrow,
.aside-kicker {
  margin: 0 0 0.9rem;
  color: var(--cedar);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.gate-card h1,
.setup-heading h1,
.results-panel > h1 {
  margin: 0;
  color: var(--forest-deep);
  font-family: var(--font-display);
  font-weight: 750;
  line-height: 0.98;
  letter-spacing: -0.035em;
}

.gate-card h1 {
  max-width: 720px;
  font-size: clamp(3rem, 6vw, 5.5rem);
}

.lede {
  max-width: 620px;
  margin: 1.5rem 0 2.4rem;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.22rem);
}

.unlock-form {
  max-width: 580px;
}

.unlock-form > label,
.control-block > label,
.control-block > legend,
.short-answer-area > label {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--forest-deep);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.025em;
}

.password-row,
.short-answer-row {
  display: flex;
  align-items: stretch;
  gap: 0.65rem;
}

input[type="password"],
input[type="text"],
select {
  min-height: 50px;
  width: 100%;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--ink);
  padding: 0.72rem 0.9rem;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}

input[type="password"]:focus,
input[type="text"]:focus,
select:focus {
  border-color: var(--pine);
  box-shadow: 0 0 0 4px rgb(46 102 88 / 12%);
  outline: 3px solid var(--forest-deep);
  outline-offset: 2px;
}

.form-status {
  min-height: 1.5em;
  margin: 0.45rem 0 0;
  color: var(--incorrect);
  font-size: 0.85rem;
  font-weight: 700;
}

.gate-note {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.offline-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  margin-top: 1.25rem;
  padding: 1rem;
  border: 1px solid rgb(24 69 59 / 20%);
  border-radius: var(--radius-sm);
  background: rgb(229 243 234 / 62%);
}

.offline-panel strong {
  display: block;
  color: var(--forest-deep);
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.offline-panel p {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.offline-panel .offline-status {
  font-weight: 750;
}

.offline-status[data-status="ready"] {
  color: var(--correct);
}

.offline-status[data-status="warning"] {
  color: var(--close);
}

.gate-aside {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 520px;
  padding: clamp(2rem, 5vw, 4rem);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  background:
    linear-gradient(145deg, rgb(255 255 255 / 4%), transparent 46%),
    var(--forest);
  color: #fff;
  box-shadow: var(--shadow-lg);
}

.gate-aside .aside-kicker {
  color: #d8c480;
}

.feature-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  display: grid;
  grid-template-columns: 2.3rem 1fr;
  gap: 0.85rem;
  align-items: start;
  padding: 1.15rem 0;
  border-bottom: 1px solid rgb(255 255 255 / 15%);
  font-size: 0.94rem;
  font-weight: 650;
}

.feature-list li span {
  color: #d8c480;
  font-family: var(--font-display);
  font-weight: 800;
}

.aside-footnote {
  margin: 1.6rem 0 0;
  color: rgb(255 255 255 / 62%);
  font-size: 0.74rem;
  line-height: 1.6;
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0.68rem 1.05rem;
  font-weight: 800;
  line-height: 1.1;
  transition: transform 140ms ease, box-shadow 140ms ease, background 140ms ease;
}

.button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.button:active:not(:disabled) {
  transform: translateY(0);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.button-primary {
  background: var(--msu-green);
  color: #fff;
  box-shadow: 0 8px 18px rgb(24 69 59 / 20%);
}

.button-primary:hover:not(:disabled) {
  background: var(--forest-deep);
  box-shadow: 0 10px 22px rgb(24 69 59 / 26%);
}

.button-dark {
  background: var(--forest-deep);
  color: #fff;
}

.button-secondary {
  border-color: var(--forest);
  background: transparent;
  color: var(--forest);
}

.button-quiet {
  border-color: var(--line);
  background: rgb(255 255 255 / 55%);
  color: var(--forest);
}

.button-small {
  min-height: 38px;
  padding: 0.52rem 0.78rem;
  font-size: 0.8rem;
}

.button-large {
  min-height: 54px;
  min-width: 150px;
}

.game-view {
  padding-block: clamp(2rem, 5vw, 4.5rem);
}

.setup-heading {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: end;
  margin-bottom: 2rem;
}

.setup-heading h1,
.results-panel > h1 {
  font-size: clamp(2.4rem, 5vw, 4.4rem);
}

.setup-heading > div > p:last-child {
  max-width: 670px;
  margin: 1rem 0 0;
  color: var(--muted);
}

.bank-pill {
  flex: 0 0 auto;
  min-width: 150px;
  padding: 1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgb(255 253 247 / 65%);
  text-align: right;
}

.bank-pill strong,
.bank-pill span {
  display: block;
}

.bank-pill strong {
  color: var(--forest);
  font-family: var(--font-display);
  font-size: 1.9rem;
  line-height: 1;
}

.bank-pill span {
  margin-top: 0.2rem;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
}

.setup-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 1.25rem;
  align-items: start;
}

.setup-card,
.tier-guide,
.question-card,
.results-panel {
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow-sm);
}

.setup-card {
  display: grid;
  gap: 1.45rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  border-radius: var(--radius);
}

.control-block {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.control-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.control-help {
  margin: 0.42rem 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.tier-choices {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  padding: 1rem;
  border: 1px dashed var(--line-dark);
  border-radius: var(--radius-sm);
}

.tier-choices legend {
  grid-column: 1 / -1;
}

.tier-choices label {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.84rem;
}

.tier-choices label span {
  width: 24px;
  height: 24px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  background: var(--forest);
  color: #fff;
  font-weight: 850;
}

input[type="checkbox"],
input[type="radio"] {
  accent-color: var(--msu-green);
}

.segmented-control {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding: 4px;
  border: 1px solid var(--line-dark);
  border-radius: 12px;
  background: #f2f3ed;
}

.segmented-control label {
  position: relative;
}

.segmented-control input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.segmented-control span {
  min-height: 42px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  text-align: center;
}

.segmented-control input:checked + span {
  background: #fff;
  color: var(--forest);
  box-shadow: 0 2px 8px rgb(21 37 31 / 10%);
}

.segmented-control input:focus-visible + span {
  outline: 3px solid var(--forest-deep);
  outline-offset: 1px;
}

.quality-warning {
  padding: 0.85rem 1rem;
  border-left: 4px solid var(--close);
  border-radius: 6px;
  background: var(--close-soft);
  color: #68480e;
  font-size: 0.8rem;
}

.start-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.start-row output,
.start-row small {
  display: block;
}

.start-row output {
  color: var(--forest);
  font-weight: 850;
}

.start-row small {
  margin-top: 0.18rem;
  color: var(--muted);
}

.history-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.history-controls .control-help {
  max-width: 42rem;
}

.history-controls .button {
  flex: 0 0 auto;
}

.tier-guide {
  padding: 1.6rem;
  border-radius: var(--radius);
}

.tier-guide h2 {
  margin: 0 0 1.2rem;
  color: var(--forest-deep);
  font-family: var(--font-display);
  font-size: 1.8rem;
}

.tier-guide dl {
  margin: 0;
}

.tier-guide dl > div {
  padding: 0.9rem 0;
  border-top: 1px solid var(--line);
}

.tier-guide dt {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  color: var(--forest-deep);
  font-size: 0.84rem;
  font-weight: 850;
}

.tier-guide dd {
  margin: 0.35rem 0 0 2.1rem;
  color: var(--muted);
  font-size: 0.76rem;
}

.tier-dot {
  width: 24px;
  height: 24px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  font-size: 0.68rem;
}

.tier-a { background: var(--correct); }
.tier-b { background: #367894; }
.tier-c { background: var(--close); }
.tier-o { background: #6c6575; }

.scoring-note {
  margin-top: 1.1rem;
  padding: 1rem;
  border-radius: var(--radius-sm);
  background: #eff3eb;
}

.scoring-note strong {
  color: var(--forest);
  font-size: 0.8rem;
}

.scoring-note p {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.76rem;
}

.question-panel {
  max-width: 940px;
}

.round-topline,
.progress-copy,
.score-strip,
.source-row {
  display: flex;
  align-items: center;
}

.round-topline {
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.progress-copy {
  gap: 0.7rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

#progress-label {
  color: var(--forest);
  font-weight: 850;
}

.progress-track {
  height: 6px;
  overflow: hidden;
  margin-bottom: 1.25rem;
  border-radius: 999px;
  background: #dde3da;
}

.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--msu-green), var(--moss));
  transition: width 250ms ease;
}

.question-card {
  padding: clamp(1.25rem, 4.5vw, 3.25rem);
  border-radius: var(--radius-lg);
}

.question-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 1.1rem;
}

.question-badge,
.question-format {
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.question-badge {
  background: var(--forest);
  color: #fff;
}

.question-badge-neutral {
  background: #e9eee7;
  color: var(--forest);
}

.question-format {
  margin-left: auto;
  color: var(--muted);
}

#question-prompt {
  max-width: 820px;
  margin: 0 0 2rem;
  color: var(--forest-deep);
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.answer-area {
  margin: 0;
  padding: 0;
  border: 0;
}

.choice-list {
  display: grid;
  gap: 0.75rem;
}

.choice-button {
  width: 100%;
  min-height: 60px;
  display: grid;
  grid-template-columns: 36px 1fr auto;
  gap: 0.85rem;
  align-items: center;
  border: 1px solid var(--line-dark);
  border-radius: 13px;
  background: #fff;
  padding: 0.75rem 1rem;
  color: var(--ink);
  text-align: left;
  transition: border-color 140ms ease, background 140ms ease, transform 140ms ease;
}

.choice-button:hover:not(:disabled) {
  border-color: var(--pine);
  background: #f4f7f1;
  transform: translateX(2px);
}

.choice-key {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-dark);
  border-radius: 8px;
  background: #f4f5ef;
  color: var(--forest);
  font-weight: 900;
}

.choice-text {
  font-weight: 680;
}

.choice-result {
  font-size: 0.74rem;
  font-weight: 850;
}

.choice-button[data-result="correct"] {
  border-color: var(--correct);
  background: var(--correct-soft);
}

.choice-button[data-result="correct"] .choice-key {
  border-color: var(--correct);
  background: var(--correct);
  color: #fff;
}

.choice-button[data-result="incorrect"] {
  border-color: var(--incorrect);
  background: var(--incorrect-soft);
}

.choice-button[data-result="incorrect"] .choice-key {
  border-color: var(--incorrect);
  background: var(--incorrect);
  color: #fff;
}

.choice-button:disabled {
  cursor: default;
  color: var(--ink);
  opacity: 0.72;
}

.choice-button[data-result]:disabled {
  opacity: 1;
}

.short-answer-area > label {
  font-size: 0.9rem;
}

.short-answer-row input {
  min-width: 0;
  font-size: 1rem;
}

.feedback-panel {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: start;
  margin-top: 1.8rem;
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.feedback-panel[data-status="correct"] {
  border-color: #b8dbc7;
  background: var(--correct-soft);
}

.feedback-panel[data-status="close"] {
  border-color: #e3cf90;
  background: var(--close-soft);
}

.feedback-panel[data-status="incorrect"] {
  border-color: #e4bbb6;
  background: var(--incorrect-soft);
}

.feedback-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--forest);
  color: #fff;
  font-size: 1.25rem;
  font-weight: 900;
}

.feedback-panel[data-status="close"] .feedback-icon { background: var(--close); }
.feedback-panel[data-status="incorrect"] .feedback-icon { background: var(--incorrect); }

.feedback-title {
  margin: 0;
  color: var(--forest-deep);
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 800;
}

#feedback-message {
  margin: 0.2rem 0 0.8rem;
  color: var(--muted);
  font-size: 0.84rem;
}

.answer-review {
  display: grid;
  gap: 0.5rem;
  margin: 0;
}

.answer-review > div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 0.6rem;
}

.answer-review dt {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.answer-review dd {
  margin: 0;
  color: var(--ink);
  font-size: 0.84rem;
  font-weight: 700;
}

.source-row {
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-top: 0.85rem;
  color: var(--muted);
  font-size: 0.74rem;
}

#source-link {
  color: var(--forest);
  font-weight: 850;
}

.feedback-panel > .button {
  align-self: center;
}

.score-strip {
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.7rem 1.4rem;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.score-strip strong {
  color: var(--forest);
}

.score-total {
  padding-left: 1.4rem;
  border-left: 1px solid var(--line-dark);
}

.results-panel {
  max-width: 900px;
  padding: clamp(1.5rem, 5vw, 4rem);
  border-radius: var(--radius-lg);
}

.results-summary {
  max-width: 620px;
  margin: 1rem 0 2rem;
  color: var(--muted);
  font-size: 1rem;
}

.result-score {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 2rem;
  align-items: center;
  padding: 1.5rem;
  border-radius: var(--radius);
  background: #eef2ea;
}

.score-ring {
  aspect-ratio: 1;
  display: grid;
  place-content: center;
  border: 12px solid var(--moss);
  border-radius: 50%;
  background: var(--paper);
  text-align: center;
}

.score-ring strong,
.score-ring span {
  display: block;
}

.score-ring strong {
  color: var(--forest);
  font-family: var(--font-display);
  font-size: 2.5rem;
  line-height: 1;
}

.score-ring span {
  max-width: 80px;
  margin: 0.3rem auto 0;
  color: var(--muted);
  font-size: 0.65rem;
  font-weight: 800;
  line-height: 1.2;
  text-transform: uppercase;
}

.result-score dl {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 0;
}

.result-score dl > div {
  padding: 0.6rem 1rem;
  border-left: 1px solid var(--line-dark);
  text-align: center;
}

.result-score dt {
  color: var(--forest);
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
}

.result-score dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.review-wrap {
  margin-top: 2rem;
}

.review-wrap h2 {
  margin: 0 0 0.8rem;
  color: var(--forest);
  font-family: var(--font-display);
  font-size: 1.55rem;
}

.review-list {
  display: grid;
  gap: 0.6rem;
  margin: 0;
  padding-left: 1.6rem;
}

.review-list li {
  padding-left: 0.35rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.review-list strong {
  display: block;
  color: var(--ink);
}

.results-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.site-footer {
  min-height: 70px;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  border-top: 1px solid rgb(24 69 59 / 14%);
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.noscript-message {
  width: min(100% - 2rem, 700px);
  margin: 3rem auto;
  padding: 1rem;
  border-radius: var(--radius-sm);
  background: var(--incorrect-soft);
  color: var(--incorrect);
  text-align: center;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(1px, 1px, 1px, 1px) !important;
  white-space: nowrap !important;
}

@media (max-width: 880px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .header-title {
    display: none;
  }

  .gate-layout {
    grid-template-columns: 1fr;
    padding-block: 1.5rem;
  }

  .gate-card {
    min-height: 450px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  }

  .gate-aside {
    min-height: auto;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  }

  .feature-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 1rem;
  }

  .setup-grid {
    grid-template-columns: 1fr;
  }

  .tier-guide {
    display: none;
  }

  .feedback-panel {
    grid-template-columns: 42px 1fr;
  }

  .feedback-panel > .button {
    grid-column: 1 / -1;
    width: 100%;
  }
}

@media (max-width: 620px) {
  .site-header,
  .site-footer,
  .gate-layout,
  .view-panel {
    width: min(100% - 1rem, var(--content));
  }

  .site-header {
    min-height: 68px;
  }

  .wordmark-mark {
    width: 34px;
    height: 34px;
  }

  .gate-layout {
    min-height: calc(100vh - 130px);
    padding-block: 0.5rem 1rem;
  }

  .gate-card {
    min-height: 430px;
    padding: 1.5rem;
  }

  .gate-card h1 {
    font-size: clamp(2.75rem, 15vw, 4.4rem);
  }

  .gate-aside {
    padding: 1.5rem;
  }

  .feature-list {
    grid-template-columns: 1fr;
  }

  .password-row,
  .short-answer-row,
  .setup-heading,
  .start-row,
  .history-controls,
  .offline-panel {
    align-items: stretch;
    flex-direction: column;
  }

  .offline-panel {
    display: flex;
  }

  .bank-pill {
    align-self: flex-start;
    text-align: left;
  }

  .control-row,
  .tier-choices {
    grid-template-columns: 1fr;
  }

  .segmented-control {
    grid-template-columns: 1fr;
  }

  .segmented-control span {
    min-height: 38px;
  }

  .round-topline {
    align-items: flex-start;
  }

  .progress-copy {
    display: grid;
    gap: 0.15rem;
  }

  .question-card {
    border-radius: var(--radius);
  }

  .question-format {
    width: 100%;
    margin: 0.2rem 0 0;
    padding-left: 0;
  }

  #question-prompt {
    font-size: clamp(1.7rem, 8vw, 2.35rem);
  }

  .choice-button {
    grid-template-columns: 34px 1fr;
  }

  .choice-result {
    grid-column: 2;
  }

  .feedback-panel {
    grid-template-columns: 1fr;
  }

  .feedback-icon {
    width: 38px;
    height: 38px;
  }

  .answer-review > div {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }

  .score-strip {
    justify-content: flex-start;
  }

  .score-total {
    padding-left: 0;
    border-left: 0;
  }

  .result-score {
    grid-template-columns: 1fr;
  }

  .score-ring {
    width: 160px;
    margin-inline: auto;
  }

  .result-score dl > div {
    padding: 0.5rem;
  }

  .site-footer {
    min-height: 76px;
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 0.2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}