:root {
  --bg: #eef5f1;
  --surface: #ffffff;
  --surface-soft: #f0f9f3;
  --text: #122a3d;
  --muted: #5d7184;
  --border: #e4ede8;
  --green: #0e9d62;
  --green-dark: #0a7a4b;
  --green-soft: #e7f7ee;
  --ink: #163a55;
  --coral: #ee4d54;
  --coral-soft: #fdecec;
  --amber: #f5b939;
  --blue: #2f6df0;
  --blue-soft: #eef3fe;
  --shadow-sm: 0 2px 10px rgba(14, 70, 47, 0.06);
  --shadow: 0 14px 34px rgba(12, 70, 46, 0.1);
  --shadow-lg: 0 22px 50px rgba(12, 70, 46, 0.14);
  --radius-sm: 11px;
  --radius: 16px;
  --radius-lg: 22px;
  --pill: 999px;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-weight: 500;
  letter-spacing: 0.01em;
  background:
    radial-gradient(120% 60% at 100% 0%, rgba(20, 181, 116, 0.16), transparent 60%),
    radial-gradient(120% 50% at 0% 0%, rgba(15, 159, 98, 0.12), transparent 55%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
}

button {
  font: inherit;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 3px solid rgba(14, 157, 98, 0.45);
  outline-offset: 2px;
  border-radius: 6px;
}

.app-shell {
  width: min(100%, 440px);
  min-height: 100vh;
  margin: 0 auto;
  padding: max(14px, env(safe-area-inset-top)) 16px calc(112px + env(safe-area-inset-bottom));
}

.app-header {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 13px;
  align-items: center;
  padding: 8px 2px 16px;
}

.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  border-radius: 15px;
  background: linear-gradient(150deg, #18b977 0%, #0c8a52 100%);
  box-shadow: 0 10px 22px rgba(11, 122, 75, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.brand-mark::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    linear-gradient(90deg, transparent 47%, rgba(255, 255, 255, 0.16) 49% 51%, transparent 53%),
    linear-gradient(0deg, transparent 47%, rgba(255, 255, 255, 0.16) 49% 51%, transparent 53%);
}

.brand-mark .plain-ball {
  position: relative;
  z-index: 1;
  width: 26px;
  height: 26px;
}

/* 無地の白丸ボール方針（README参照）に合わせ、ボールの縫い目（曲線）は表示しない。 */
.brand-mark .racket-stem {
  display: none;
}

.plain-ball {
  display: inline-block;
  width: 24px;
  height: 24px;
  border-radius: var(--pill);
  background: radial-gradient(circle at 34% 28%, #ffffff 0 32%, #f2f5f7 56%, #d9e0e4 100%);
  box-shadow: inset -2px -3px 5px rgba(120, 140, 150, 0.28), 0 4px 10px rgba(40, 70, 90, 0.18);
}

.source-line {
  margin: 0 0 4px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--green-dark);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.source-line::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: var(--pill);
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(14, 157, 98, 0.18);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: 23px;
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: 0.005em;
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
  margin-bottom: 16px;
}

.status-strip > div {
  position: relative;
  min-width: 0;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, #ffffff, #fbfefc);
  box-shadow: var(--shadow-sm);
}

.status-label {
  display: block;
  margin-bottom: 3px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.status-strip strong {
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
  color: var(--ink);
}

.status-strip .stat-correct,
.record-summary .stat-correct {
  color: var(--green-dark);
}

.status-strip .stat-wrong,
.record-summary .stat-wrong {
  color: var(--coral);
}

.status-strip .stat-perfect,
.record-summary .stat-perfect {
  color: #d29211;
}

.view-root {
  min-height: 600px;
}

.quiz-panel,
.learn-panel,
.exam-panel,
.record-panel {
  animation: lift-in 220ms cubic-bezier(0.2, 0.7, 0.3, 1);
}

.quiz-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 2px 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.quiz-meta span:first-child {
  padding: 4px 11px;
  border-radius: var(--pill);
  background: var(--green-soft);
  color: var(--green-dark);
  font-size: 12px;
}

.quiz-meta strong {
  color: var(--green-dark);
  font-weight: 800;
}

.progress-track {
  height: 9px;
  overflow: hidden;
  margin-bottom: 14px;
  border-radius: var(--pill);
  background: #d8e7df;
  box-shadow: inset 0 1px 2px rgba(12, 70, 46, 0.1);
}

.progress-track span {
  display: block;
  height: 100%;
  min-width: 7%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--green-dark), #24c98c);
  transition: width 280ms cubic-bezier(0.2, 0.7, 0.3, 1);
}

.court-visual {
  position: relative;
  height: 168px;
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
  background: linear-gradient(180deg, #9fe1f1 0 34%, #3a9c64 35%, #2f8b58 100%);
  box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.25);
}

.court-sky::before,
.court-sky::after {
  content: "";
  position: absolute;
  top: 26px;
  width: 78px;
  height: 26px;
  border-radius: var(--pill);
  background: rgba(255, 255, 255, 0.82);
  filter: blur(0.3px);
}

.court-sky::before {
  left: 22px;
}

.court-sky::after {
  right: 30px;
  width: 58px;
  top: 40px;
}

.court-lines {
  position: absolute;
  left: 6%;
  right: 6%;
  bottom: 14px;
  height: 96px;
  border: 4px solid rgba(255, 255, 255, 0.95);
  transform: perspective(260px) rotateX(54deg);
  transform-origin: bottom center;
}

.court-lines::before,
.court-lines::after,
.net-line,
.service-line,
.center-line,
.side-line {
  content: "";
  position: absolute;
  background: rgba(255, 255, 255, 0.95);
}

.court-lines::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 4px;
}

.court-lines::after {
  left: 50%;
  top: 0;
  bottom: 0;
  width: 4px;
}

.net-line {
  left: -5%;
  right: -5%;
  top: 48%;
  height: 7px;
  background: var(--ink);
  box-shadow: 0 4px 0 rgba(255, 255, 255, 0.6);
}

.service-line {
  left: 18%;
  right: 18%;
  top: 27%;
  height: 4px;
}

.center-line {
  left: 50%;
  top: 27%;
  bottom: 0;
  width: 4px;
}

.side-line.left,
.side-line.right {
  top: 0;
  bottom: 0;
  width: 4px;
}

.side-line.left {
  left: 18%;
}

.side-line.right {
  right: 18%;
}

.visual-ball {
  position: absolute;
  left: 34%;
  top: 58px;
  width: 26px;
  height: 26px;
  animation: ball-float 2.4s ease-in-out infinite;
}

.ball-trail {
  position: absolute;
  left: 41%;
  top: 76px;
  width: 112px;
  height: 62px;
  border-top: 4px dashed rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  transform: rotate(24deg);
}

.coin-disc {
  position: absolute;
  right: 30px;
  top: 50px;
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: var(--pill);
  background: linear-gradient(145deg, #fff3b0, #f3b134);
  color: #5d3d00;
  font-size: 18px;
  font-weight: 800;
  box-shadow: 0 12px 22px rgba(97, 65, 8, 0.26), inset 0 2px 4px rgba(255, 255, 255, 0.6);
}

.coin-disc.second {
  right: 76px;
  top: 100px;
  width: 44px;
  height: 44px;
  background: linear-gradient(145deg, #fbfdff, #c4d2e0);
  color: #2f4358;
}

.question-card {
  padding: 18px 18px 18px;
  border: 1px solid var(--border);
  border-top: 0;
  border-radius: 0 0 var(--radius) var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.question-id {
  display: inline-block;
  margin-bottom: 9px;
  padding: 3px 10px;
  border-radius: var(--pill);
  background: var(--surface-soft);
  color: var(--green-dark);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.question-card h2 {
  margin-bottom: 16px;
  font-size: 21px;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: 0.005em;
}

.choice-list {
  display: grid;
  gap: 9px;
}

.choice-button {
  display: grid;
  grid-template-columns: 36px 1fr;
  align-items: center;
  gap: 13px;
  min-height: 56px;
  padding: 9px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: transform 150ms ease, border-color 150ms ease, background 150ms ease, box-shadow 150ms ease;
}

.choice-button:not(:disabled):hover {
  border-color: #c2d6cb;
  box-shadow: var(--shadow-sm);
}

.choice-button:not(:disabled):active {
  transform: scale(0.985);
}

.choice-number {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: var(--pill);
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  transition: background 150ms ease;
}

.choice-button.correct {
  border-color: var(--green);
  background: var(--green-soft);
  box-shadow: 0 8px 20px rgba(14, 157, 98, 0.14);
}

.choice-button.correct .choice-number {
  background: var(--green);
}

.choice-button.wrong {
  border-color: var(--coral);
  background: var(--coral-soft);
}

.choice-button.wrong .choice-number {
  background: var(--coral);
}

.choice-button:disabled {
  cursor: default;
  opacity: 0.96;
}

.answer-card {
  position: relative;
  margin-top: 14px;
  padding: 17px 18px;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  border-left: 4px solid var(--green);
  background: linear-gradient(180deg, #ffffff, #f6fcf8);
  box-shadow: var(--shadow);
}

.answer-card.is-wrong {
  border-left-color: var(--coral);
  background: linear-gradient(180deg, #ffffff, #fdf6f6);
}

.answer-card.is-correct::after {
  content: "✓";
  position: absolute;
  right: 16px;
  top: 15px;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: var(--pill);
  background: var(--green);
  color: #fff;
  font-size: 17px;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 6px 14px rgba(14, 157, 98, 0.4);
}

.answer-card strong {
  display: block;
  margin-bottom: 9px;
  padding-right: 38px;
  color: var(--green-dark);
  font-size: 18px;
  font-weight: 800;
}

.answer-card.is-wrong strong {
  color: #c0392f;
}

.answer-card p {
  margin-bottom: 14px;
  font-size: 14.5px;
  line-height: 1.7;
}

.answer-card p b {
  color: var(--ink);
}

.source-list {
  display: grid;
  gap: 7px;
  margin-bottom: 16px;
}

.source-list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 13px;
  border: 1px solid #e4ebf7;
  border-radius: var(--radius-sm);
  background: var(--blue-soft);
  color: #1d4ed8;
  font-size: 12.5px;
  font-weight: 700;
  line-height: 1.45;
  text-decoration: none;
}

.source-list a::before {
  content: "🔗";
  flex: none;
  font-size: 12px;
  filter: grayscale(0.1);
}

.source-row {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 11px;
  align-items: center;
  padding: 11px;
  border: 1px solid #e4ebf7;
  border-radius: var(--radius-sm);
  background: var(--blue-soft);
  color: #1d4ed8;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.source-list a:hover,
.source-row:hover {
  border-color: #cbd9f6;
}

.primary-action,
.ghost-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border: 0;
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, #16a76c, var(--green-dark));
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.02em;
  cursor: pointer;
  box-shadow: 0 10px 22px rgba(11, 122, 75, 0.28);
  transition: transform 150ms ease, box-shadow 150ms ease, filter 150ms ease;
}

.primary-action:hover {
  filter: brightness(1.03);
}

.primary-action:active,
.ghost-action:active {
  transform: translateY(1px);
}

.ghost-action {
  border: 1.5px solid var(--border);
  background: #fff;
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

.wide {
  width: 100%;
}

.hint-line,
.mini-note {
  margin: 16px 4px 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.hint-line {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
  border: 1px dashed #c5e2d3;
}

.hint-line::before {
  content: "👆";
  font-size: 15px;
  line-height: 1.4;
}

.section-heading {
  margin: 10px 0 16px;
}

.section-heading h2 {
  margin-bottom: 6px;
  font-size: 27px;
  font-weight: 800;
  letter-spacing: 0.005em;
}

.section-heading p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.rule-update-card {
  position: relative;
  overflow: hidden;
  padding: 17px 18px;
  border-radius: var(--radius);
  background: linear-gradient(145deg, #103a55, #0a2336);
  color: #fff;
  box-shadow: var(--shadow);
}

.rule-update-card::before {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 120px;
  height: 120px;
  border-radius: var(--pill);
  background: radial-gradient(circle, rgba(36, 201, 140, 0.4), transparent 70%);
}

.rule-update-card strong {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 800;
}

.rule-update-card strong::before {
  content: "NEW";
  padding: 2px 8px;
  border-radius: var(--pill);
  background: var(--green);
  color: #fff;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.rule-update-card p {
  position: relative;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 13.5px;
  line-height: 1.7;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 11px;
  margin: 16px 0;
}

.category-card {
  display: flex;
  flex-direction: column;
  min-height: 118px;
  padding: 15px 15px 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  text-align: left;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform 150ms ease, box-shadow 150ms ease, border-color 150ms ease;
}

.category-card:hover {
  transform: translateY(-2px);
  border-color: #cfe6da;
  box-shadow: var(--shadow);
}

.category-card:active {
  transform: translateY(0);
}

.category-card span,
.category-card small {
  display: block;
}

.category-card span {
  min-height: 42px;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.35;
}

.category-card strong {
  display: block;
  margin: auto 0 2px;
  color: var(--green-dark);
  font-size: 23px;
  font-weight: 800;
}

.category-card small,
.source-row small {
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 500;
  line-height: 1.45;
}

.source-panel {
  display: grid;
  gap: 8px;
  margin-top: 22px;
}

.source-panel h3 {
  margin-bottom: 2px;
  font-size: 16px;
  font-weight: 800;
}

.source-row span {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: var(--pill);
  background: linear-gradient(150deg, #16a76c, var(--green-dark));
  color: #fff;
  font-size: 13px;
  font-weight: 800;
}

.source-row strong {
  color: #1d4ed8;
}

.exam-panel {
  padding-top: 8px;
}

.result-ring {
  display: grid;
  place-items: center;
  gap: 6px;
  width: 196px;
  height: 196px;
  margin: 22px auto;
  border-radius: var(--pill);
  background:
    radial-gradient(circle at center, #fff 0 56%, transparent 57%),
    conic-gradient(var(--coral) 0 58%, #e4ece8 58% 100%);
  box-shadow: var(--shadow-lg);
}

.result-ring.pass {
  background:
    radial-gradient(circle at center, #fff 0 56%, transparent 57%),
    conic-gradient(var(--green) 0 76%, #e4ece8 76% 100%);
}

.result-ring span {
  font-size: 44px;
  font-weight: 800;
  color: var(--ink);
}

.result-ring small {
  margin-top: -54px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.category-bars {
  display: grid;
  gap: 13px;
  margin: 18px 0;
}

.bar-row {
  display: grid;
  grid-template-columns: 100px 1fr 42px;
  gap: 10px;
  align-items: center;
  font-size: 12.5px;
  font-weight: 700;
}

.bar-row > strong {
  color: var(--green-dark);
  font-weight: 800;
  text-align: right;
}

.bar-row > div {
  height: 10px;
  overflow: hidden;
  border-radius: var(--pill);
  background: #dde9e3;
  box-shadow: inset 0 1px 2px rgba(12, 70, 46, 0.08);
}

.bar-row > div span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--green-dark), #2fd093);
  transition: width 320ms cubic-bezier(0.2, 0.7, 0.3, 1);
}

.w-0 {
  width: 0;
}

.w-5 {
  width: 5%;
}

.w-10 {
  width: 10%;
}

.w-15 {
  width: 15%;
}

.w-20 {
  width: 20%;
}

.w-25 {
  width: 25%;
}

.w-30 {
  width: 30%;
}

.w-35 {
  width: 35%;
}

.w-40 {
  width: 40%;
}

.w-45 {
  width: 45%;
}

.w-50 {
  width: 50%;
}

.w-55 {
  width: 55%;
}

.w-60 {
  width: 60%;
}

.w-65 {
  width: 65%;
}

.w-70 {
  width: 70%;
}

.w-75 {
  width: 75%;
}

.w-80 {
  width: 80%;
}

.w-85 {
  width: 85%;
}

.w-90 {
  width: 90%;
}

.w-95 {
  width: 95%;
}

.w-100 {
  width: 100%;
}

.record-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 10px 0 18px;
}

.record-summary div {
  padding: 14px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, #ffffff, #fbfefc);
  box-shadow: var(--shadow-sm);
}

.record-summary span,
.record-summary strong {
  display: block;
}

.record-summary span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.record-summary strong {
  margin-top: 5px;
  font-size: 27px;
  font-weight: 800;
  color: var(--ink);
}

.review-list {
  display: grid;
  gap: 9px;
  margin: 22px 0;
}

.review-list h2 {
  margin-bottom: 4px;
  font-size: 19px;
  font-weight: 800;
}

.review-list button {
  position: relative;
  padding: 14px 14px 14px 16px;
  border: 1px solid var(--border);
  border-left: 4px solid var(--amber);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--text);
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 150ms ease, box-shadow 150ms ease;
}

.review-list button:hover {
  transform: translateX(2px);
  box-shadow: var(--shadow);
}

.review-list p {
  margin: 0;
  padding: 14px;
  border-radius: var(--radius-sm);
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.6;
}

.bottom-nav {
  position: fixed;
  left: 50%;
  bottom: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  width: min(100%, 440px);
  padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
  border-top: 1px solid rgba(18, 48, 74, 0.08);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 -14px 40px rgba(18, 48, 74, 0.08);
  transform: translateX(-50%);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.nav-button {
  display: grid;
  gap: 5px;
  justify-items: center;
  align-content: center;
  min-height: 56px;
  border: 0;
  border-radius: 14px;
  background: transparent;
  color: #6b8093;
  font-size: 11.5px;
  font-weight: 700;
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease;
}

.nav-button.active {
  color: var(--green-dark);
  background: var(--green-soft);
}

.nav-icon {
  position: relative;
  width: 26px;
  height: 26px;
}

.book-icon {
  border: 3px solid currentColor;
  border-radius: 7px 7px 4px 4px;
}

.book-icon::before {
  content: "";
  position: absolute;
  left: 10px;
  top: -3px;
  width: 3px;
  height: 26px;
  background: currentColor;
}

.quiz-icon {
  border-radius: 8px;
  background: currentColor;
}

.quiz-icon::after {
  content: "?";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 15px;
  font-weight: 800;
}

.nav-button.active .quiz-icon::after {
  color: var(--green-soft);
}

.board-icon {
  border: 3px solid currentColor;
  border-radius: 6px;
}

.board-icon::before {
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  top: -7px;
  height: 8px;
  border-radius: 6px;
  background: currentColor;
}

.bars-icon::before,
.bars-icon::after,
.bars-icon {
  border-radius: 4px;
  background: currentColor;
}

.bars-icon {
  align-self: end;
  width: 6px;
  height: 24px;
}

.bars-icon::before,
.bars-icon::after {
  content: "";
  position: absolute;
  bottom: 0;
  width: 6px;
}

.bars-icon::before {
  left: -10px;
  height: 15px;
}

.bars-icon::after {
  right: -10px;
  height: 21px;
}

@keyframes lift-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes ball-float {
  0%,
  100% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(8px, -8px);
  }
}

@media (max-width: 360px) {
  .app-shell {
    padding-left: 12px;
    padding-right: 12px;
  }

  h1 {
    font-size: 21px;
  }

  .question-card h2 {
    font-size: 19px;
  }

  .bar-row {
    grid-template-columns: 86px 1fr 38px;
  }
}

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