main.about-study {
  --as-shadow: color-mix(
    in srgb,
    var(--primary-strong) 22%,
    rgba(0, 0, 0, 0.18)
  );
  --as-mark: color-mix(in srgb, var(--tertiary) 30%, transparent);
  --as-rule: color-mix(in srgb, var(--secondary) 16%, transparent);
  --as-line: color-mix(in srgb, var(--on-surface) 10%, transparent);
  display: block;
  width: 100%;
  max-width: none;
  padding: 0 !important;
  margin: 0 !important;
  background: var(--surface);
  color: var(--on-surface);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: clip;
}

body.theme-dark main.about-study {
  --as-shadow: rgba(0, 0, 0, 0.55);
}

.about-study *,
.about-study *::before,
.about-study *::after {
  box-sizing: border-box;
}

.about-study [hidden] {
  display: none !important;
}

.about-study img {
  max-width: 100%;
  display: block;
}

.about-study p {
  margin: 0;
}

.about-study h1,
.about-study h2,
.about-study h3 {
  margin: 0;
  text-wrap: balance;
  color: var(--on-surface);
}

.about-study h2 {
  font-size: clamp(34px, 4.6vw, 58px);
  line-height: 1;
  font-weight: 800;
  letter-spacing: -2px;
}

.as-title span {
  color: var(--primary);
}

.as-title span::after {
  content: ':';
}

.about-study :focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary) 60%, transparent);
  outline-offset: 3px;
  border-radius: 8px;
}

.as-theme-dark {
  display: none !important;
}

body.theme-dark .as-theme-light {
  display: none !important;
}

body.theme-dark .as-theme-dark {
  display: block !important;
}

.as-wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding-inline: 24px;
}

.as-section {
  padding-block: 112px;
  scroll-margin-top: calc(var(--eduloo-nav-height, 96px) - 40px);
}

.as-sub {
  font-size: clamp(17px, 1.6vw, 19px);
  color: var(--on-surface-variant);
  max-width: 52ch;
  margin-top: 18px !important;
}

.as-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px !important;
  align-items: center;
}

.as-hero {
  position: relative;
  overflow: hidden;
  padding-block: calc(var(--eduloo-nav-height, 96px) + 64px) 90px;
  background:
    radial-gradient(
      50% 60% at 82% 38%,
      color-mix(in srgb, var(--primary) 22%, transparent) 0%,
      transparent 70%
    ),
    radial-gradient(
      35% 45% at 8% 92%,
      color-mix(in srgb, var(--secondary) 16%, transparent) 0%,
      transparent 70%
    ),
    var(--surface);
}

.as-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 40px;
  align-items: center;
}

.as-hero h1 {
  font-size: clamp(52px, 8.4vw, 112px);
  line-height: 0.9;
  font-weight: 800;
  letter-spacing: -5px;
}

.as-underline {
  position: relative;
  color: var(--primary);
  white-space: nowrap;
}

.as-underline svg {
  position: absolute;
  left: -2%;
  bottom: clamp(-14px, -1.2vw, -8px);
  width: 104%;
  height: clamp(14px, 2.2vw, 30px);
  overflow: visible;
}

.as-underline path {
  stroke: var(--tertiary);
  stroke-width: 7;
  fill: none;
  stroke-linecap: round;
  stroke-dasharray: 420;
  stroke-dashoffset: 420;
  animation: as-draw 1.1s 0.5s cubic-bezier(0.6, 0.1, 0.2, 1) forwards;
}

@keyframes as-draw {
  to {
    stroke-dashoffset: 0;
  }
}

.as-hero .as-sub {
  margin-top: 28px !important;
  font-size: clamp(18px, 1.8vw, 21px);
}

.as-est {
  font-size: 14px;
  color: var(--on-surface-variant);
  display: flex;
  align-items: center;
  gap: 8px;
}

.as-est::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--secondary);
}

.as-desk {
  position: relative;
  display: grid;
  place-items: center;
}

.as-hero-art {
  width: 100%;
  max-width: 560px;
  height: auto;
  filter: drop-shadow(
    0 30px 40px color-mix(in srgb, var(--primary) 22%, transparent)
  );
  animation: as-bob 6s ease-in-out infinite;
}

@keyframes as-bob {
  50% {
    transform: translateY(-10px) rotate(-1deg);
  }
}

.as-summary,
.as-quiz {
  background: var(--surface-container-low);
}

.as-sum-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 280px);
  gap: 56px;
  align-items: start;
  margin-top: 56px;
}

.as-paper {
  position: relative;
  background-color: var(--surface-container-lowest);
  background-image: repeating-linear-gradient(
    180deg,
    transparent 0 35px,
    var(--as-rule) 35px 36px
  );
  background-position: 0 18px;
  border-radius: 6px 6px 28px 28px;
  padding: 56px 220px 64px 96px;
  box-shadow:
    0 0 0 1px var(--as-line),
    0 40px 60px -40px var(--as-shadow);
}

.as-paper::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 64px;
  width: 2px;
  background: color-mix(in srgb, var(--primary) 35%, transparent);
}

.as-paper h3 {
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.3;
}

.as-paper p {
  font-size: 17px;
  line-height: 36px;
  color: var(--on-surface);
  max-width: 60ch;
}

.as-block + .as-block {
  margin-top: 36px !important;
}

.as-paper mark {
  background: linear-gradient(
    transparent 38%,
    var(--as-mark) 38% 88%,
    transparent 88%
  );
  color: inherit;
  padding: 0 2px;
}

.as-block {
  position: relative;
}

.as-margin {
  position: absolute;
  color: var(--primary-dim);
  font-family: 'Caveat', 'Comic Sans MS', cursive !important;
  font-weight: 700;
  line-height: 1.1;
  top: 4px;
  right: -196px;
  width: 170px;
  font-size: 24px;
  text-align: left;
  transform: rotate(4deg);
}

.as-margin--tilt {
  transform: rotate(-3deg);
}

.as-sum-side {
  display: grid;
  gap: 18px;
  position: sticky;
  top: calc(var(--eduloo-nav-height, 96px) + 16px);
}

.as-founders {
  position: relative;
  margin: 0;
  border-radius: 24px;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  background: #0b0b0c;
}

.as-founders img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 78% 50%;
}

.as-founders figcaption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 60px 20px 18px;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.85), transparent);
  color: #f3f0ea;
  font-size: 14px;
  line-height: 1.45;
}

.as-founders figcaption b {
  display: block;
  font-weight: 700;
  font-size: 17px;
  margin-bottom: 2px;
}

.as-keyfacts {
  list-style: none;
  margin: 0;
  padding: 0;
  border-radius: 20px;
  background: var(--surface-container-lowest);
  box-shadow: 0 0 0 1px var(--as-line);
}

.as-keyfacts li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 18px;
  font-size: 14px;
}

.as-keyfacts li + li {
  border-top: 1px dashed var(--as-line);
}

.as-keyfacts span {
  color: var(--on-surface-variant);
}

.as-keyfacts b {
  font-weight: 700;
  text-align: right;
}

.as-cards-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 64px;
  align-items: center;
}

.as-cards-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.as-cards-meta .as-counts {
  margin-top: 32px !important;
}

.as-cards-meta .as-keys {
  margin-top: 18px !important;
}

.as-counts {
  list-style: none;
  margin: 0 !important;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.as-count {
  --as-c: var(--primary);
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px 8px 12px;
  border-radius: 999px;
  background: var(--surface-container-lowest);
  box-shadow: 0 0 0 1px var(--as-line);
}

.as-count::before {
  content: '';
  align-self: center;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--as-c);
}

.as-count--again {
  --as-c: var(--tertiary);
}

.as-count--done {
  --as-c: var(--secondary);
}

.as-count b {
  font-weight: 800;
  font-size: 18px;
  font-variant-numeric: tabular-nums;
}

.as-count span {
  font-size: 13px;
  color: var(--on-surface-variant);
}

.as-keys {
  margin: 0 !important;
  font-size: 13px;
  color: var(--on-surface-variant);
}

.about-study kbd {
  display: inline-grid;
  place-items: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  border-radius: 6px;
  background: var(--surface-container-lowest);
  box-shadow:
    0 0 0 1px var(--as-line),
    inset 0 -2px 0 var(--surface-container);
  font-family: inherit;
  font-size: 11px;
  font-weight: 600;
  color: var(--on-surface);
  vertical-align: 1px;
}

.as-keys kbd:first-child {
  margin-right: 2px;
}

.as-study {
  position: relative;
  padding: 20px 20px 16px;
  border-radius: 28px;
  background: var(--surface-container-low);
  box-shadow:
    0 0 0 1px var(--as-line),
    0 40px 60px -48px var(--as-shadow);
}

.as-study-loo {
  position: absolute;
  top: -86px;
  right: 40px;
  width: 92px !important;
  height: auto;
  z-index: 0;
  transform: rotate(8deg);
}

.as-study-bar {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.as-study-deck {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--on-surface);
}

.as-study-deck i {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 12px;
  background: var(--primary-container);
  color: var(--primary-dim);
}

.as-study-segs {
  display: grid;
  grid-template-columns: repeat(5, 28px);
  gap: 4px;
}

.as-study-segs i {
  height: 6px;
  border-radius: 6px;
  background: var(--surface-container-high);
  transition: background 0.3s ease;
}

.as-study-segs i.is-current {
  background: color-mix(
    in srgb,
    var(--primary) 45%,
    var(--surface-container-high)
  );
}

.as-study-segs i.is-done {
  background: var(--secondary);
}

.as-deck {
  position: relative;
  z-index: 1;
  height: 280px;
  margin-bottom: 26px;
  perspective: 1400px;
}

.as-deck.is-done {
  height: auto;
  margin-bottom: 0;
}

.as-deck.is-done .as-deck-shadow,
.as-deck.is-done .as-flip {
  display: none !important;
}

.as-deck-shadow {
  position: absolute;
  inset: 0;
  border-radius: 20px;
  background: var(--surface-container-lowest);
  box-shadow: 0 0 0 1px var(--as-line);
}

.as-deck-shadow--1 {
  transform: translateY(9px) scale(0.965);
  opacity: 0.75;
}

.as-deck-shadow--2 {
  transform: translateY(18px) scale(0.93);
  opacity: 0.45;
}

.about-study .as-flip {
  all: unset;
  box-sizing: border-box;
  position: absolute !important;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  padding: 0 !important;
  margin: 0 !important;
  border: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  cursor: pointer;
  transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.3, 0.7, 0.2, 1);
}

.about-study .as-flip:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary) 55%, transparent);
  outline-offset: 4px;
  border-radius: 20px;
}

.as-flip.is-turned {
  transform: rotateY(180deg);
}

.as-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 20px;
  background: var(--surface-container-lowest);
  box-shadow:
    0 0 0 1px var(--as-line),
    0 18px 30px -22px var(--as-shadow);
  padding: 18px 22px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  justify-items: center;
  text-align: center;
  color: var(--on-surface);
  overflow: hidden;
}

.as-face--back {
  transform: rotateY(180deg);
  background:
    radial-gradient(
      120% 90% at 100% 0%,
      var(--primary-container),
      transparent 60%
    ),
    var(--surface-container-lowest);
}

.as-face-top {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.as-face-tag {
  font-family: 'Caveat', 'Comic Sans MS', cursive !important;
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--primary-dim);
  transform: rotate(-3deg);
}

.as-face-num {
  font-size: 12px;
  font-weight: 600;
  color: var(--on-surface-variant);
  font-variant-numeric: tabular-nums;
}

.as-face-q {
  align-self: center;
  font-weight: 800;
  font-size: clamp(22px, 2.4vw, 28px);
  line-height: 1.2;
  letter-spacing: -0.5px;
  max-width: 20ch;
}

.as-face-a {
  align-self: center;
  font-size: 16px;
  line-height: 1.55;
  max-width: 42ch;
}

.as-face-hint {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--on-surface-variant);
}

.as-face-hint i {
  font-size: 11px;
}

.as-rate {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.about-study .as-rate button {
  --as-c: var(--primary);
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 !important;
  padding: 10px !important;
  border: 0 !important;
  border-radius: 14px !important;
  background: var(--surface-container-lowest) !important;
  color: var(--on-surface) !important;
  box-shadow: 0 0 0 1px var(--as-line) !important;
  font-family: inherit !important;
  font-size: 13px !important;
  font-weight: 700 !important;
  letter-spacing: normal !important;
  text-align: left;
  line-height: 1.2;
  cursor: pointer;
  transition:
    box-shadow 0.15s ease,
    transform 0.15s ease,
    opacity 0.2s ease;
}

.about-study .as-rate button > i {
  flex: none;
  width: 28px;
  height: 28px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  font-size: 12px;
  background: color-mix(in srgb, var(--as-c) 14%, transparent);
  color: var(--as-c);
}

.about-study .as-rate button > span {
  display: grid;
  gap: 1px;
  min-width: 0;
}

.about-study .as-rate button small {
  font-size: 11px;
  font-weight: 500;
  color: var(--on-surface-variant);
  white-space: nowrap;
}

.about-study .as-rate .as-rate--hard {
  --as-c: var(--tertiary);
}

.about-study .as-rate .as-rate--good,
.about-study .as-rate .as-rate--easy {
  --as-c: var(--secondary);
}

.about-study .as-rate button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow:
    0 0 0 1.5px var(--as-c),
    0 10px 18px -12px var(--as-c) !important;
}

.about-study .as-rate button:disabled {
  opacity: 0.4;
  cursor: default;
}

.as-deck-done {
  display: grid;
  justify-items: center;
  text-align: center;
  gap: 10px;
  padding: 12px 0 20px;
}

.as-deck-done img {
  width: 120px;
  height: auto;
}

.as-deck-done h3 {
  font-size: 24px;
  font-weight: 800;
}

.as-deck-done p {
  color: var(--on-surface-variant);
  margin-bottom: 8px !important;
}

.as-quiz-box {
  position: relative;
  max-width: 780px;
  margin: 56px auto 0;
  background: var(--surface-container-lowest);
  border-radius: 28px;
  box-shadow:
    0 0 0 1px var(--as-line),
    0 40px 60px -44px var(--as-shadow);
  padding: 32px;
}

.about-study .as-quiz-loo {
  position: absolute;
  top: -88px;
  right: 44px;
  width: 92px !important;
  transform: rotate(-6deg);
  pointer-events: none;
}

.as-quiz-box > :not(.as-quiz-loo) {
  position: relative;
  z-index: 1;
}

.as-qbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 14px;
}

.as-qbar span + span {
  color: var(--on-surface-variant);
  font-weight: 500;
}

.as-quiz-box.is-finished .as-qbar,
.as-quiz-box.is-finished .as-track {
  display: none;
}

.as-track {
  height: 6px;
  border-radius: 6px;
  background: var(--surface-container);
  margin: 14px 0 28px;
  overflow: hidden;
}

.as-track i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--primary);
  border-radius: 6px;
  transition: width 0.4s ease;
}

.as-qtext {
  font-weight: 800;
  font-size: clamp(22px, 2.6vw, 28px);
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 22px !important;
}

.as-opts {
  display: grid;
  gap: 10px;
}

.as-opt {
  all: unset;
  box-sizing: border-box;
  cursor: pointer;
  display: grid;
  grid-template-columns: 34px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: 16px;
  box-shadow: inset 0 0 0 1.5px var(--as-line);
  font-size: 16px;
  color: var(--on-surface);
  transition:
    box-shadow 0.15s ease,
    background 0.15s ease,
    opacity 0.15s ease;
}

.as-opt:hover {
  box-shadow: inset 0 0 0 1.5px var(--primary);
}

.as-opt-key {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 14px;
  background: var(--surface-container);
  color: var(--on-surface-variant);
}

.as-opt-mark {
  font-size: 18px;
  font-weight: 800;
}

.as-opt.is-right {
  background: color-mix(in srgb, var(--secondary) 12%, transparent);
  box-shadow: inset 0 0 0 2px var(--secondary);
}

.as-opt.is-right .as-opt-key {
  background: var(--secondary);
  color: var(--on-primary);
}

.as-opt.is-right .as-opt-mark::after {
  content: '✓';
  color: var(--secondary);
}

.as-opt.is-wrong {
  background: color-mix(in srgb, var(--primary) 10%, transparent);
  box-shadow: inset 0 0 0 2px var(--primary);
}

.as-opt.is-wrong .as-opt-key {
  background: var(--primary);
  color: var(--on-primary);
}

.as-opt.is-wrong .as-opt-mark::after {
  content: '✕';
  color: var(--primary);
}

.as-opts.is-locked .as-opt {
  cursor: default;
}

.as-opts.is-locked .as-opt:not(.is-right):not(.is-wrong) {
  opacity: 0.5;
}

.as-explain {
  margin-top: 18px !important;
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 14px 20px 14px 12px;
  border-radius: 18px;
  background: var(--surface-container);
}

.about-study .as-explain-loo {
  flex: none;
  width: 76px !important;
  height: 76px !important;
  object-fit: contain;
}

.as-explain p {
  flex: 1;
  min-width: 0;
  font-size: 15px;
  line-height: 1.55;
}

.as-explain-verdict {
  display: block;
  font-size: 16px;
  font-weight: 800;
  color: var(--primary-dim);
  margin-bottom: 2px;
}

.as-explain.is-right .as-explain-verdict {
  color: var(--secondary);
}

.as-qnav {
  display: flex;
  justify-content: flex-end;
  margin-top: 24px !important;
}

.as-result {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px;
  align-items: center;
}

.as-result h3 {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.as-result p {
  color: var(--on-surface-variant);
  margin-top: 8px !important;
}

.as-result .as-actions {
  margin-top: 18px !important;
}

.as-result [data-score-0],
.as-result [data-score-1],
.as-result [data-score-2],
.as-result [data-score-3],
.as-result [data-score-low] {
  display: none;
}

.as-result[data-score='0'] [data-score-0],
.as-result[data-score='1'] [data-score-1],
.as-result[data-score='2'] [data-score-2],
.as-result[data-score='3'] [data-score-3],
.as-result[data-score='0'] [data-score-low],
.as-result[data-score='1'] [data-score-low],
.as-result[data-score='2'] [data-score-low] {
  display: block;
}

.as-ring {
  --p: 0;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: conic-gradient(
    var(--primary) calc(var(--p) * 1%),
    var(--surface-container) 0
  );
  position: relative;
}

.as-ring::before {
  content: '';
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  background: var(--surface-container-lowest);
}

.as-ring b {
  position: relative;
  font-weight: 800;
  font-size: 38px;
  letter-spacing: -1px;
  color: var(--primary-dim);
}

.as-shots {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 16px;
}

.as-shot {
  margin: 0;
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.as-shot--wide {
  grid-column: span 7;
}

.as-shot--tall {
  grid-column: span 5;
}

.as-shot-frame {
  position: relative;
  height: 300px;
  border-radius: 22px;
  overflow: hidden;
  background: var(--surface-container);
  box-shadow: 0 0 0 1px var(--as-line);
}

.as-shot--wide .as-shot-frame,
.as-shot--tall .as-shot-frame {
  height: 400px;
}

.about-study .as-shot-btn {
  width: 100%;
  height: 100%;
  margin: 0 !important;
  padding: 0 !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  cursor: zoom-in;
}

.about-study .as-shot-btn:focus-visible {
  outline-offset: -3px;
}

.as-shot-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.as-shot-frame:hover img {
  transform: scale(1.03);
}

.as-shot-note {
  margin: 0 !important;
  padding-left: 10px;
  font-family: 'Caveat', 'Comic Sans MS', cursive !important;
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--primary-dim);
  transform: rotate(-2deg);
  transform-origin: left center;
}

.as-shot-note::before {
  content: '↑ ';
  color: var(--on-surface-variant);
}

.as-formats {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  font-size: 15px;
  color: var(--on-surface-variant);
}

.as-formats b {
  font-weight: 700;
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 9px;
  background: var(--surface-container-lowest);
  box-shadow: 0 0 0 1px var(--as-line);
  color: var(--on-surface);
}

.as-contact {
  position: relative;
  overflow: hidden;
  padding-bottom: 140px;
  background:
    radial-gradient(
      45% 60% at 20% 45%,
      color-mix(in srgb, var(--primary) 18%, transparent),
      transparent 70%
    ),
    radial-gradient(
      40% 50% at 90% 90%,
      color-mix(in srgb, var(--secondary) 14%, transparent),
      transparent 70%
    ),
    var(--surface);
}

.as-contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 56px;
  align-items: center;
}

.as-contact-art {
  display: grid;
  place-items: center;
}

.as-contact-art img {
  width: 100%;
  max-width: 460px;
  height: auto;
  filter: drop-shadow(
    0 30px 40px color-mix(in srgb, var(--primary) 22%, transparent)
  );
  animation: as-bob 6s ease-in-out infinite;
}

.as-ways {
  display: grid;
  gap: 12px;
  margin-top: 32px;
}

.as-way {
  --as-c: var(--primary);
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 16px 18px;
  border-radius: 20px;
  text-decoration: none;
  color: var(--on-surface);
  background: var(--surface-container-lowest);
  box-shadow: 0 0 0 1px var(--as-line);
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

.as-way:hover {
  transform: translateX(4px);
  box-shadow: 0 0 0 2px var(--primary);
  color: var(--on-surface);
  text-decoration: none;
}

.as-way--secondary {
  --as-c: var(--secondary);
}

.as-way--tertiary {
  --as-c: var(--tertiary);
}

.as-way-ic {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 19px;
  background: color-mix(in srgb, var(--as-c) 16%, transparent);
  color: var(--as-c);
}

.as-way b {
  font-weight: 700;
  font-size: 17px;
  display: block;
}

.as-way span span {
  font-size: 14px;
  color: var(--on-surface-variant);
}

.as-way-go {
  font-size: 20px;
  color: var(--on-surface-variant);
}

@media (max-width: 1100px) {
  .as-paper {
    padding-right: 64px;
  }

  .as-margin,
  .as-margin--tilt {
    position: static;
    display: block;
    width: auto;
    transform: rotate(-2deg);
    margin: 0 0 6px !important;
  }
}

@media (max-width: 980px) {
  .as-hero h1 {
    letter-spacing: -3px;
  }

  .as-hero-grid,
  .as-sum-grid,
  .as-cards-grid,
  .as-contact-grid {
    grid-template-columns: 1fr;
  }

  .as-desk {
    max-width: 440px;
    width: 100%;
    margin: 0 auto;
  }

  .as-sum-side {
    position: static;
    grid-template-columns: 1fr 1fr;
  }

  .as-founders {
    aspect-ratio: auto;
    min-height: 260px;
  }

  .as-shot--wide,
  .as-shot--tall {
    grid-column: span 12;
  }

  .as-contact-art img {
    max-width: 300px;
  }
}

@media (max-width: 640px) {
  .as-hero h1 {
    letter-spacing: -1.5px;
  }

  .about-study h2 {
    letter-spacing: -1px;
  }

  .as-wrap {
    padding-inline: 16px;
  }

  .as-section {
    padding-block: 72px;
  }

  .as-hero {
    padding-block: calc(var(--eduloo-nav-height, 96px) + 32px) 56px;
  }

  .as-paper {
    padding: 40px 22px 44px 46px;
    background-position: 0 4px;
  }

  .as-paper::before {
    left: 32px;
  }

  .as-sum-side {
    grid-template-columns: 1fr;
  }

  .as-deck {
    height: 320px;
  }

  .as-study-segs {
    grid-template-columns: repeat(5, 18px);
  }

  .as-rate {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .as-keys {
    display: none;
  }

  .as-quiz-box {
    padding: 22px 18px;
  }

  .as-opt {
    grid-template-columns: 30px 1fr auto;
    gap: 10px;
    padding: 12px;
  }

  .as-result {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .as-shot {
    grid-column: span 12;
  }

  .as-shot-frame,
  .as-shot--wide .as-shot-frame,
  .as-shot--tall .as-shot-frame {
    height: 260px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .about-study *,
  .about-study *::before,
  .about-study *::after {
    animation: none !important;
    transition: none !important;
  }

  .as-underline path {
    stroke-dashoffset: 0;
  }
}