.learn-pi-body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% 22%, rgba(185, 244, 222, 0.72), transparent 25rem),
    radial-gradient(circle at 90% 68%, rgba(198, 0, 28, 0.12), transparent 28rem),
    var(--cream);
}

.learn-pi {
  min-height: calc(100vh - 82px);
}

.lp-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 36px;
  overflow: hidden;
  min-height: 310px;
  padding: 58px max(20px, calc((100vw - var(--max)) / 2));
  color: #fff;
  background:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    radial-gradient(circle at 78% 35%, rgba(198, 0, 28, 0.32), transparent 28%),
    linear-gradient(135deg, #121524, #1a1d35 58%, #121524);
  background-size: 46px 46px, 46px 46px, auto, auto;
}

.lp-hero-copy {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.lp-kicker,
.lp-over-kicker {
  margin: 0 0 12px;
  color: var(--mint);
  font-family: "Poppins Semi", "Questrial", sans-serif;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.lp-hero h1 {
  margin: 0;
  font-family: "Poppins Semi", "Questrial", sans-serif;
  font-size: clamp(58px, 8vw, 94px);
  line-height: 0.9;
  letter-spacing: -0.055em;
}

.lp-hero h1 span {
  color: var(--mint);
}

.lp-hero-copy > p:last-child {
  max-width: 560px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.74);
  font-size: 19px;
}

.lp-pi-mark {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 190px;
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 46px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.17), rgba(255, 255, 255, 0.04));
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
  color: #fff;
  font-family: Georgia, serif;
  font-size: 142px;
  line-height: 1;
  transform: rotate(-4deg);
  backdrop-filter: blur(14px);
}

.lp-game-shell {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 40px 0 74px;
}

.lp-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}

.lp-stat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-width: 0;
  padding: 18px 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--soft-shadow);
}

.lp-stat span {
  color: var(--muted);
  font-size: 14px;
}

.lp-stat strong {
  font-family: "Poppins Semi", "Questrial", sans-serif;
  font-size: 25px;
  line-height: 1;
}

.lp-hearts {
  color: var(--coral);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.lp-stat .lp-hearts > span {
  color: var(--coral);
  font-size: 25px;
}

.lp-hearts i {
  color: rgba(18, 21, 36, 0.2);
  font-style: normal;
}

.lp-board {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(300px, 0.75fr);
  gap: 24px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
}

.lp-sequence-wrap {
  min-width: 0;
  padding: 24px;
  border-radius: 22px;
  background:
    radial-gradient(circle at 12% 15%, rgba(185, 244, 222, 0.16), transparent 28%),
    #121524;
  color: #fff;
}

.lp-sequence-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.lp-sequence-heading span {
  font-family: "Poppins Semi", "Questrial", sans-serif;
}

.lp-sequence-heading small {
  color: rgba(255, 255, 255, 0.54);
}

.lp-sequence {
  max-height: 328px;
  min-height: 232px;
  overflow: auto;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.18);
  color: rgba(255, 255, 255, 0.9);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(23px, 3vw, 34px);
  line-height: 1.58;
  letter-spacing: 0.08em;
  overflow-wrap: anywhere;
  word-break: break-all;
  scrollbar-color: rgba(185, 244, 222, 0.55) rgba(255, 255, 255, 0.06);
}

.lp-prefix {
  color: var(--mint);
  font-weight: 700;
  letter-spacing: 0;
}

.lp-cursor {
  display: inline-block;
  width: 0.12em;
  height: 1em;
  margin-left: 0.12em;
  border-radius: 999px;
  background: var(--mint);
  vertical-align: -0.12em;
  animation: lp-blink 1s steps(2, start) infinite;
}

.lp-latest-digit {
  border-radius: 4px;
  background: rgba(83, 232, 165, 0.28);
  color: #9effcf;
  text-shadow: 0 0 18px rgba(83, 232, 165, 0.9);
  animation: lp-digit-glow 520ms ease-out both;
}

.lp-play-area {
  display: grid;
  align-content: center;
  justify-items: center;
  min-width: 0;
  padding: 18px 8px 50px;
}

.lp-instruction {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 18px;
  text-align: center;
}

.lp-answer-label {
  margin-bottom: 10px;
  font-family: "Poppins Semi", "Questrial", sans-serif;
  font-size: 14px;
}

.lp-answer {
  width: 126px;
  height: 126px;
  padding: 0;
  border: 3px solid rgba(75, 72, 117, 0.24);
  border-radius: 30px;
  outline: none;
  background: #fff;
  box-shadow: inset 0 0 0 7px rgba(75, 72, 117, 0.05), 0 16px 38px rgba(18, 21, 36, 0.12);
  color: var(--ink);
  caret-color: var(--coral);
  font-family: "Poppins Semi", "Questrial", sans-serif;
  font-size: 72px;
  line-height: 1;
  text-align: center;
  transition: border-color 140ms ease, box-shadow 140ms ease, color 140ms ease;
}

.lp-answer:focus {
  border-color: var(--plum);
  box-shadow: inset 0 0 0 7px rgba(75, 72, 117, 0.06), 0 0 0 5px rgba(75, 72, 117, 0.12), 0 18px 42px rgba(18, 21, 36, 0.15);
}

.lp-answer.is-correct {
  border-color: #199861;
  color: #087545;
  box-shadow: inset 0 0 0 7px rgba(40, 203, 124, 0.12), 0 0 0 6px rgba(40, 203, 124, 0.15), 0 18px 42px rgba(40, 203, 124, 0.2);
  animation: lp-answer-pop 240ms ease-out;
}

.lp-answer.is-incorrect {
  border-color: var(--coral);
  color: var(--coral);
  box-shadow: inset 0 0 0 7px rgba(198, 0, 28, 0.1), 0 0 0 6px rgba(198, 0, 28, 0.1), 0 18px 42px rgba(198, 0, 28, 0.16);
  animation: lp-shake 230ms ease-in-out;
}

.lp-answer:disabled {
  opacity: 0.56;
}

.lp-feedback {
  min-height: 48px;
  margin: 14px 0 8px;
  color: var(--muted);
  text-align: center;
}

.lp-keypad {
  display: grid;
  grid-template-columns: repeat(5, 48px);
  gap: 7px;
}

.lp-keypad button {
  display: grid;
  place-items: center;
  min-height: 46px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: rgba(18, 21, 36, 0.055);
  color: var(--ink);
  font: 18px/1 "Poppins Semi", "Questrial", sans-serif;
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease;
}

.lp-keypad button:hover {
  background: var(--mint);
  transform: translateY(-2px);
}

.lp-keypad button:focus-visible,
.lp-restart:focus-visible,
.lp-try-again:focus-visible {
  outline: 3px solid var(--mint);
  outline-offset: 3px;
}

.lp-keypad button:disabled {
  cursor: default;
  opacity: 0.4;
  transform: none;
}

.lp-restart,
.lp-try-again {
  border: 0;
  border-radius: 999px;
  background: var(--coral);
  color: #fff;
  font-family: "Poppins Semi", "Questrial", sans-serif;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.lp-restart:hover,
.lp-try-again:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(198, 0, 28, 0.23);
}

.lp-restart {
  position: absolute;
  right: 28px;
  bottom: 25px;
  min-height: 42px;
  padding: 9px 18px;
}

.lp-game-over {
  margin-top: 20px;
  padding: 34px;
  border: 1px solid rgba(185, 244, 222, 0.24);
  border-radius: 30px;
  background:
    radial-gradient(circle at 90% 15%, rgba(198, 0, 28, 0.24), transparent 30%),
    linear-gradient(135deg, #121524, #1a1d35);
  box-shadow: var(--shadow);
  color: #fff;
  text-align: center;
}

.lp-game-over[hidden] {
  display: none;
}

.lp-game-over h2 {
  margin: 0 0 8px;
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1;
}

.lp-game-over > p:not(.lp-over-kicker) {
  margin: 8px 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 19px;
}

.lp-next-digit strong {
  color: var(--mint);
  font-size: 28px;
}

.lp-final-sequence {
  max-width: 760px;
  margin: 24px auto;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.18);
  text-align: left;
}

.lp-final-sequence > span {
  display: block;
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.56);
  font-size: 13px;
}

.lp-final-sequence p {
  max-height: 150px;
  margin: 0;
  overflow: auto;
  color: rgba(255, 255, 255, 0.86);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  overflow-wrap: anywhere;
  word-break: break-all;
}

.lp-final-sequence strong {
  color: var(--mint);
}

.lp-try-again {
  min-height: 52px;
  padding: 13px 28px;
  font-size: 17px;
}

.lp-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 26px max(20px, calc((100vw - var(--max)) / 2));
  background: var(--ink);
  color: rgba(255, 255, 255, 0.58);
  font-size: 14px;
}

.lp-footer a {
  color: #fff;
}

@keyframes lp-shake {
  20%, 60% { transform: translateX(-7px); }
  40%, 80% { transform: translateX(7px); }
}

@keyframes lp-answer-pop {
  50% { transform: scale(1.07); }
}

@keyframes lp-digit-glow {
  from { background: rgba(83, 232, 165, 0.8); color: #fff; }
  to { background: rgba(83, 232, 165, 0.08); color: #9effcf; }
}

@keyframes lp-blink {
  50% { opacity: 0; }
}

@media (max-width: 800px) {
  .learn-pi-body .nav-cta {
    right: auto;
    width: calc(100vw - 60px);
  }

  .lp-hero {
    min-height: 250px;
  }

  .lp-pi-mark {
    width: 130px;
    border-radius: 34px;
    font-size: 96px;
  }

  .lp-stats {
    grid-template-columns: 1fr 1fr;
  }

  .lp-lives-stat {
    grid-column: 1 / -1;
  }

  .lp-board {
    grid-template-columns: 1fr;
  }

  .lp-play-area {
    padding-bottom: 62px;
  }
}

@media (max-width: 520px) {
  .lp-hero {
    grid-template-columns: 1fr;
    min-height: 230px;
    padding-top: 42px;
    padding-bottom: 44px;
  }

  .lp-hero h1 {
    font-size: 58px;
  }

  .lp-hero-copy > p:last-child {
    font-size: 17px;
  }

  .lp-pi-mark {
    position: absolute;
    right: 0;
    bottom: -28px;
    width: 126px;
    opacity: 0.2;
  }

  .lp-game-shell {
    width: min(var(--max), calc(100% - 24px));
    padding-top: 18px;
  }

  .lp-stats {
    gap: 8px;
  }

  .lp-stat {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    padding: 14px 16px;
  }

  .lp-lives-stat {
    align-items: center;
    flex-direction: row;
  }

  .lp-board {
    gap: 18px;
    padding: 14px;
    border-radius: 24px;
  }

  .lp-sequence-wrap {
    padding: 14px;
  }

  .lp-sequence-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 3px;
  }

  .lp-sequence {
    min-height: 156px;
    max-height: 230px;
    padding: 14px;
    font-size: 23px;
  }

  .lp-play-area {
    padding: 8px 0 62px;
  }

  .lp-answer {
    width: 112px;
    height: 112px;
    font-size: 64px;
  }

  .lp-keypad {
    grid-template-columns: repeat(5, minmax(40px, 1fr));
    width: 100%;
  }

  .lp-restart {
    right: 18px;
    bottom: 18px;
  }

  .lp-game-over {
    padding: 26px 18px;
  }

  .lp-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .lp-cursor,
  .lp-latest-digit,
  .lp-answer.is-correct,
  .lp-answer.is-incorrect {
    animation: none;
  }

  .lp-keypad button,
  .lp-restart,
  .lp-try-again,
  .lp-answer {
    transition: none;
  }

  .lp-game-over {
    scroll-behavior: auto;
  }
}