@font-face {
  font-family: Nunito;
  src: url("assets/nunito.ttf") format("truetype");
  font-style: normal;
  font-weight: 200 1000;
  font-display: swap;
}

:root {
  font-family: Nunito, "Trebuchet MS", sans-serif;
  color: #081e31;
  background: #f4f8fb;
  font-synthesis: none;
  --navy: #081e31;
  --teal: #35d7d0;
  --yellow: #ffd84f;
  --muted: #496171;
  --line: #d7e2e9;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}
body {
  margin: 0;
}
button,
input {
  font: inherit;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
button {
  cursor: pointer;
}
a {
  color: inherit;
  text-underline-offset: 5px;
}
button:focus-visible,
a:focus-visible,
summary:focus-visible,
[tabindex="-1"]:focus-visible {
  outline: 3px solid #087a80;
  outline-offset: 5px;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
h1,
h2,
h3,
p {
  margin: 0;
}
h1,
h2,
h3 {
  text-wrap: balance;
}
p {
  text-wrap: pretty;
}
[hidden] {
  display: none !important;
}
.wrap {
  width: min(1240px, calc(100% - 96px));
  margin-inline: auto;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  transform: translateY(-180%);
  padding: 14px;
  background: var(--yellow);
  z-index: 20;
  border-radius: 8px;
}
.skip-link:focus {
  transform: none;
}
.header {
  min-height: 110px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 18px;
  line-height: 1.06;
  font-weight: 900;
  letter-spacing: -0.5px;
}
.brand img {
  flex: 0 0 auto;
}
.header nav {
  display: flex;
  gap: 32px;
}
.header nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 750;
}
.header nav a:hover,
.text-link:hover,
.footer a:hover {
  color: #087a80;
}
.header nav a[aria-current="page"] {
  text-decoration: underline;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 58px;
  padding: 15px 25px;
  border: 0;
  border-radius: 15px;
  font-weight: 900;
  font-size: 17px;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  transition:
    background-color 150ms,
    transform 150ms;
}
.button:hover {
  transform: translateY(-2px);
}
.button:active {
  transform: translateY(1px);
}
.button-primary {
  color: #fff;
  background: var(--navy);
  box-shadow: 0 4px 0 #35d7d0;
}
.button-primary:hover {
  background: #173c55;
}
.button-small {
  font-size: 14px;
  min-height: 46px;
  padding: 10px 18px;
  border-radius: 12px;
}
.button-outline {
  border: 1px solid #b8c9d5;
}
.button-outline:hover {
  background: #e2edf2;
}
.button-yellow {
  color: var(--navy);
  background: var(--yellow);
}
.button-yellow:hover {
  background: #ffe787;
}
.play-icon {
  font-size: 14px;
  color: var(--teal);
}
.hero {
  display: grid;
  grid-template-columns: 1.07fr 1fr;
  align-items: center;
  gap: 28px;
  padding-block: 38px 72px;
}
.hero-copy {
  padding-block: 24px;
}
.availability {
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 9px;
}
.availability > span {
  width: 8px;
  height: 8px;
  background: #087a80;
  border-radius: 50%;
  box-shadow: 0 0 0 5px #d9f4f0;
}
h1 {
  font-size: clamp(48px, 5.5vw, 78px);
  line-height: 1.03;
  letter-spacing: -3.8px;
  font-weight: 950;
}
.hero-description {
  max-width: 390px;
  margin-top: 25px;
  font-size: 21px;
  line-height: 1.55;
  color: var(--muted);
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 25px;
  margin-top: 30px;
  flex-wrap: wrap;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  font-weight: 850;
  font-size: 15px;
}
.hero-note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  margin-top: 17px;
  max-width: 400px;
}
.hero-facts {
  display: flex;
  gap: 26px;
  padding-top: 29px;
  margin-top: 27px;
  border-top: 1px solid var(--line);
  max-width: 415px;
}
.hero-facts > div + div {
  padding-left: 25px;
  border-left: 1px solid var(--line);
}
.hero-facts strong {
  font-weight: 900;
  font-size: 23px;
  letter-spacing: -0.7px;
  white-space: nowrap;
}
.hero-facts strong span {
  font-size: 17px;
}
.hero-facts p {
  font-size: 13px;
  margin-top: 3px;
  color: var(--muted);
}

.arena-scene {
  overflow: hidden;
  position: relative;
  min-height: 618px;
  background: var(--navy);
  border-radius: 44% 44% 34px 34px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 151px 34px 63px;
  isolation: isolate;
  scroll-margin-top: 25px;
}
.scene-orbit {
  position: absolute;
  border: 1px solid #386279;
  border-radius: 50%;
  z-index: -1;
  pointer-events: none;
}
.orbit-one {
  width: 95%;
  height: 70%;
  top: 10%;
  left: 2.5%;
  transform: rotate(-25deg);
}
.orbit-two {
  width: 76%;
  height: 84%;
  top: 7%;
  left: 12%;
  transform: rotate(27deg);
  border-color: #254355;
}
.scene-symbol {
  position: absolute;
  font-size: 58px;
  line-height: 1;
  font-weight: 900;
}
.symbol-plus {
  top: 15%;
  left: 12%;
  color: var(--teal);
  transform: rotate(-16deg);
}
.symbol-divide {
  top: 7%;
  right: 17%;
  color: var(--yellow);
  transform: rotate(12deg);
}
.scene-star {
  position: absolute;
  top: 40%;
  right: 5%;
  font-size: 25px;
  color: var(--teal);
}
.kapi-sticker {
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%) rotate(5deg);
  width: 156px;
}
.kapi-sticker > span {
  position: absolute;
  top: 125px;
  left: 16px;
  font-size: 13px;
  color: var(--navy);
  background: var(--yellow);
  padding: 6px 13px;
  white-space: nowrap;
  border-radius: 7px;
  font-weight: 900;
  transform: rotate(-10deg);
}
.demo-card {
  position: relative;
  width: 100%;
  max-width: 360px;
  padding: 25px;
  border-radius: 23px;
  color: #fff;
  background: #17374e;
  border: 1px solid #406073;
  box-shadow:
    0 14px 0 -7px #0e293c,
    0 15px 0 -6px #34536a;
}
.demo-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.demo-top h2 {
  font-size: 16px;
  letter-spacing: 0;
}
.demo-top > span {
  font-size: 12px;
  font-weight: 800;
  padding: 5px 9px;
  border-radius: 7px;
  background: #29485e;
  color: #e1edf4;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.demo-progress {
  display: flex;
  gap: 5px;
  margin-top: 16px;
}
.demo-progress span {
  height: 4px;
  border-radius: 4px;
  background: #38586e;
  flex: 1;
}
.demo-progress .is-current {
  background: var(--yellow);
}
.demo-progress .is-done {
  background: var(--teal);
}
.demo-instruction {
  color: #d0dfe8;
  font-size: 13px;
  margin-top: 29px;
  text-align: center;
}
.equation {
  font-size: clamp(38px, 4.1vw, 55px);
  font-weight: 900;
  letter-spacing: -2px;
  text-align: center;
  white-space: nowrap;
  margin-block: 6px 23px;
  line-height: 1.3;
  font-variant-numeric: tabular-nums;
}
.equation > span {
  color: var(--teal);
}
.equation.is-finished {
  font-size: 36px;
  letter-spacing: -1.5px;
  color: var(--yellow);
  margin-block: 27px;
}
.demo-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
}
.demo-options button {
  background: #294d66;
  color: #fff;
  border: 1px solid #4a6d84;
  border-radius: 12px;
  padding: 9px;
  font-size: 25px;
  font-weight: 900;
  min-height: 53px;
  box-shadow: 0 3px 0 #0b263b;
}
.demo-options button:hover {
  background: #3b657f;
}
.demo-options .is-wrong {
  background: #593d38;
  border-color: #ffb6a6;
}
.demo-options .is-correct {
  background: var(--teal);
  color: var(--navy);
  border-color: var(--teal);
}
.demo-options button[aria-disabled="true"] {
  cursor: default;
}
.demo-card :focus-visible {
  outline-color: var(--yellow);
}
.demo-feedback {
  min-height: 38px;
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
  color: #d0dfe8;
  margin-top: 18px;
}
.demo-feedback.is-success {
  color: #8ff1e3;
}
.demo-next,
#demo-complete .button {
  width: 100%;
  min-height: 48px;
  font-size: 14px;
  padding: 11px 12px;
  margin-top: 10px;
}
.demo-restart {
  display: block;
  background: none;
  border: 0;
  color: #fff;
  margin: 10px auto 0;
  min-height: 44px;
  font-size: 13px;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.scene-caption {
  position: absolute;
  bottom: 23px;
  font-size: 12px;
  color: #d0dfe8;
  left: 12px;
  right: 12px;
  text-align: center;
}
.no-script {
  font-size: 13px;
  margin-top: 12px;
}
.subject-line {
  background: #e2eff1;
  border-block: 1px solid #d3e4e8;
  padding-block: 23px;
}
.subject-line .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 17px;
  font-weight: 800;
  color: #34576a;
}
.subject-line b {
  font-size: 24px;
  font-weight: 600;
  color: #127b7c;
}
.section-space {
  padding-block: 100px;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  align-items: flex-end;
  margin-bottom: 45px;
}
h2 {
  font-size: clamp(32px, 3.4vw, 46px);
  font-weight: 900;
  line-height: 1.13;
  letter-spacing: -1.8px;
}
.section-heading > p {
  font-size: 17px;
  line-height: 1.7;
  color: var(--muted);
  padding-bottom: 4px;
}
.modes-layout {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 52px;
  align-items: center;
}
.arena-mode {
  background: var(--navy);
  color: white;
  border-radius: 26px;
  min-height: 410px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 6px;
  padding: 35px;
  overflow: hidden;
}
.mode-tag {
  font-size: 12px;
  background: #2b485b;
  border-radius: 6px;
  padding: 6px 10px;
  font-weight: 800;
  display: inline-block;
}
.mode-copy h3 {
  font-size: 37px;
  line-height: 1.08;
  letter-spacing: -1.5px;
  margin-top: 22px;
}
.mode-copy p {
  font-size: 15px;
  line-height: 1.65;
  color: #c5d8e5;
  margin-top: 17px;
}
.mode-copy .button {
  margin-top: 28px;
  font-size: 14px;
  padding: 13px 17px;
  min-height: 48px;
  white-space: nowrap;
}
.minute-art {
  position: relative;
  display: flex;
  align-items: center;
  min-width: 0;
}
.minute-ring {
  position: absolute;
  left: 15px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  border: 1px solid #5d7a84;
  display: grid;
  place-items: center;
}
.minute-ring::before {
  content: "";
  position: absolute;
  inset: 11px;
  border: 9px solid var(--teal);
  border-left-color: #214b5b;
  border-bottom-color: #214b5b;
  transform: rotate(23deg);
  border-radius: 50%;
}
.minute-ring > span {
  font-size: 82px;
  font-weight: 950;
  line-height: 1;
  letter-spacing: -6px;
  text-align: center;
  margin-left: -4px;
}
.minute-ring small {
  display: block;
  font-size: 16px;
  letter-spacing: 0;
  font-weight: 700;
  margin-top: 9px;
  color: #c5d8e5;
}
.minute-spark {
  position: absolute;
  left: 60px;
  top: 11px;
  color: var(--yellow);
  font-size: 35px;
}
.minute-label {
  position: absolute;
  bottom: 15px;
  left: 5px;
  color: var(--yellow);
  font-size: 12px;
  font-weight: 800;
  transform: rotate(-7deg);
  white-space: nowrap;
}
.other-modes {
  display: grid;
  gap: 30px;
}
.other-modes article {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.feature-icon {
  flex: 0 0 52px;
  height: 52px;
  display: grid;
  place-items: center;
  font-size: 30px;
  font-weight: 850;
  border-radius: 17px;
}
.icon-teal {
  background: #c6f2ed;
}
.icon-yellow {
  background: #fff0ae;
}
.icon-blue {
  background: #dbe6f8;
}
.other-modes h3 {
  font-size: 21px;
  font-weight: 900;
  letter-spacing: -0.6px;
}
.other-modes p {
  font-size: 15px;
  line-height: 1.65;
  color: var(--muted);
  margin-top: 8px;
}
.start-section {
  background: #e8f2f5;
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 55px;
  list-style: none;
  padding: 0;
  margin: 50px 0 0;
}
.steps li {
  border-top: 2px solid #b4cbd7;
  padding-top: 24px;
  position: relative;
}
.step-number {
  width: 43px;
  height: 43px;
  display: grid;
  place-items: center;
  background: var(--navy);
  color: #fff;
  border-radius: 50%;
  font-weight: 850;
  font-size: 19px;
  margin-bottom: 20px;
}
.steps h3 {
  font-size: 23px;
  font-weight: 900;
  letter-spacing: -0.8px;
}
.steps p {
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
  margin-top: 12px;
}
.parents-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 95px;
  align-items: center;
}
.parent-art {
  min-width: 0;
  grid-template-columns: minmax(0, 1fr);
  min-height: 440px;
  display: grid;
  place-items: center;
  position: relative;
  background: #ccece7;
  border-radius: 50% 50% 24px 24px;
  padding: 32px;
}
.notebook {
  width: 320px;
  max-width: 100%;
  background: repeating-linear-gradient(#fff 0 35px, #e4eef2 35px 36px);
  padding: 29px 28px 20px;
  border-radius: 9px;
  transform: rotate(-7deg);
  box-shadow: 7px 9px 0 #82b6b3;
}
.notebook-holes {
  display: flex;
  gap: 43px;
  margin: -16px 0 23px;
}
.notebook-holes i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ccece7;
}
.notebook > p {
  font-size: 14px;
  font-weight: 800;
}
.notebook > span {
  display: block;
  font-size: 55px;
  line-height: 1.13;
  font-weight: 950;
  letter-spacing: -2px;
  margin-block: 17px;
}
.notebook-bottom {
  display: flex;
  align-items: center;
  gap: 5px;
}
.notebook-bottom > span {
  font-size: 17px;
  font-weight: 850;
}
.parent-star {
  position: absolute;
  right: 20px;
  top: 31px;
  font-size: 85px;
  line-height: 1;
  color: #aa7900;
  transform: rotate(10deg);
}
.parents-copy > p {
  color: var(--muted);
  line-height: 1.75;
  margin-top: 19px;
  font-size: 16px;
}
.parents-copy .lead {
  color: var(--navy);
  font-size: 20px;
  line-height: 1.55;
  margin-top: 25px;
}
.parent-points {
  list-style: none;
  padding: 0;
  margin: 25px 0;
  display: grid;
  gap: 13px;
}
.parent-points li {
  display: flex;
  gap: 10px;
  font-size: 15px;
  font-weight: 800;
}
.parent-points li::before {
  content: "✓";
  color: #087a80;
  font-weight: 950;
}
.parents-copy .parent-footnote {
  font-size: 13px;
  max-width: 420px;
}
.faq-section {
  display: grid;
  grid-template-columns: 0.85fr 1.6fr;
  gap: 90px;
  border-top: 1px solid var(--line);
}
.faq-heading p {
  margin-top: 25px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}
.faq-heading a {
  color: var(--navy);
  font-weight: 800;
  display: inline-block;
  min-height: 44px;
}
.questions details {
  border-bottom: 1px solid #cbd9e2;
}
.questions details:first-child {
  border-top: 1px solid #cbd9e2;
}
.questions summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 25px 0;
  cursor: pointer;
  list-style: none;
  font-weight: 850;
  font-size: 18px;
}
.questions summary::-webkit-details-marker {
  display: none;
}
.questions summary > span {
  font-size: 26px;
  font-weight: 500;
  flex: 0 0 auto;
  transition: transform 150ms;
}
.questions summary:hover {
  color: #087a80;
}
.questions [open] summary > span {
  transform: rotate(45deg);
}
.questions details > p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
  padding: 0 36px 25px 0;
}
.final-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  background: var(--yellow);
  border-radius: 28px;
  padding: 48px 64px;
  overflow: hidden;
}
.final-card h2 {
  font-size: clamp(34px, 3.8vw, 50px);
}
.final-card p {
  font-size: 17px;
  margin-top: 16px;
}
.final-card .button {
  margin-top: 27px;
  box-shadow: none;
}
.final-card > img {
  width: 275px;
  transform: rotate(9deg);
}
.footer {
  padding-block: 55px 28px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  padding-bottom: 35px;
}
.footer-top > p {
  font-size: 15px;
  line-height: 1.5;
  color: var(--muted);
}
.footer-email {
  font-size: 18px;
  font-weight: 850;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--muted);
}
.footer-bottom > a {
  min-height: 44px;
  display: flex;
  align-items: flex-start;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
}
.footer-links a {
  display: flex;
  align-items: center;
  min-height: 44px;
}
.legal-main {
  max-width: 850px;
  padding-block: 64px;
  font-size: 17px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}
.legal-main h1 {
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.15;
  letter-spacing: -1px;
}
.legal-date {
  margin-block: 18px 28px;
  color: var(--muted);
}
.legal-main section {
  margin-top: 36px;
}
.legal-main h2 {
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}
.legal-main section p + p {
  margin-top: 16px;
}
.legal-main a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.tariff-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: #fff;
}
.tariff-option {
  padding: 36px 42px;
}
.tariff-option h3 {
  font-size: 24px;
  letter-spacing: -0.7px;
}
.tariff-family {
  background: #e2eff1;
  border-left: 1px solid var(--line);
}
.tariff-price {
  margin-block: 22px 4px;
  font-size: 64px;
  font-weight: 950;
  letter-spacing: -2px;
  line-height: 1.1;
}
.tariff-price span {
  font-size: 0.6em;
}
.tariff-period {
  color: var(--muted);
  font-size: 17px;
}
.contact-main {
  min-height: 60vh;
  padding-block: 75px;
  max-width: 850px;
}
.contact-main h1 {
  font-size: clamp(40px, 5vw, 64px);
  margin-bottom: 25px;
}
.contact-main > p {
  font-size: 19px;
  line-height: 1.65;
  color: var(--muted);
}
.contact-main .contact-email {
  min-height: 44px;
  display: inline-block;
  font-size: 26px;
  margin-block: 20px 40px;
  font-weight: 850;
  overflow-wrap: anywhere;
}
.merchant-box {
  padding: 30px;
  background: #e2eff1;
  border-radius: 20px;
  margin-bottom: 30px;
}
.merchant-box h2 {
  font-size: 24px;
  letter-spacing: -0.8px;
  margin-bottom: 16px;
}
.merchant-box p {
  font-size: 18px;
  line-height: 1.75;
}

@media (min-width: 1500px) {
  .hero {
    gap: 65px;
  }
}
@media (max-width: 1100px) {
  .wrap {
    width: calc(100% - 64px);
  }
  .header nav {
    gap: 19px;
  }
  .hero {
    gap: 30px;
  }
  h1 {
    font-size: 60px;
    letter-spacing: -3px;
  }
  .hero-actions {
    gap: 15px;
  }
  .arena-scene {
    padding-inline: 22px;
  }
  .demo-card {
    padding: 21px;
  }
  .modes-layout {
    gap: 30px;
    grid-template-columns: 1.15fr 1fr;
  }
  .arena-mode {
    padding: 27px;
    grid-template-columns: 1fr;
  }
  .mode-copy {
    position: relative;
    z-index: 1;
    max-width: 255px;
  }
  .minute-art {
    display: none;
  }
  .parents-section {
    gap: 55px;
  }
  .faq-section {
    gap: 55px;
  }
}
@media (max-width: 1000px) {
  .header {
    min-height: 94px;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 15px;
  }
  .header nav {
    order: 3;
    flex-basis: 100%;
    justify-content: center;
    border-bottom: 1px solid var(--line);
    gap: 35px;
    padding-bottom: 5px;
  }
}
@media (max-width: 850px) {
  .hero {
    gap: 35px;
    grid-template-columns: 1fr 1fr;
    padding-top: 24px;
  }
  h1 {
    font-size: 47px;
    letter-spacing: -2px;
  }
  .hero-description {
    font-size: 18px;
  }
  .hero-facts {
    flex-direction: column;
    gap: 15px;
  }
  .hero-facts > div + div {
    padding: 0;
    border: 0;
  }
  .arena-scene {
    padding-inline: 15px;
    min-height: 600px;
  }
  .demo-card {
    padding: 18px;
  }
  .demo-top {
    gap: 6px;
  }
  .demo-top h2 {
    font-size: 14px;
  }
  .equation {
    font-size: 38px;
  }
  .scene-caption {
    font-size: 11px;
  }
  .symbol-plus {
    left: 6%;
  }
  .symbol-divide {
    right: 8%;
  }
  .section-space {
    padding-block: 70px;
  }
  .section-heading {
    gap: 25px;
  }
  .section-heading > p {
    font-size: 15px;
  }
  .modes-layout {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  .arena-mode {
    grid-template-columns: 1fr 1fr;
    min-height: 360px;
    padding: 35px;
  }
  .minute-art {
    display: flex;
  }
  .minute-ring {
    left: 0;
  }
  .mode-copy {
    max-width: 300px;
  }
  .other-modes {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .other-modes article {
    flex-direction: column;
    gap: 14px;
  }
  .feature-icon {
    flex-basis: auto;
    width: 52px;
  }
  .other-modes h3 {
    font-size: 19px;
  }
  .steps {
    gap: 25px;
  }
  .steps h3 {
    font-size: 20px;
  }
  .steps p {
    font-size: 15px;
  }
  .parents-section {
    gap: 35px;
  }
  .parent-art {
    padding: 25px;
    min-height: 370px;
  }
  .notebook {
    padding: 25px 20px 15px;
  }
  .notebook > span {
    font-size: 43px;
  }
  .notebook > p {
    font-size: 12px;
  }
  .parent-star {
    font-size: 60px;
    right: 7px;
  }
  .notebook-bottom {
    flex-wrap: wrap;
    gap: 0;
  }
  .notebook-bottom img {
    width: 65px;
  }
  .notebook-bottom > span {
    font-size: 14px;
  }
  .faq-section {
    gap: 35px;
    grid-template-columns: 0.7fr 1.3fr;
  }
  .final-card {
    padding: 40px;
    gap: 15px;
  }
  .final-card > img {
    width: 210px;
  }
  .footer-top > p {
    display: none;
  }
}
@media (max-width: 620px) {
  .wrap {
    width: calc(100% - 40px);
  }
  .header {
    padding-top: 12px;
  }
  .brand {
    font-size: 14px;
    gap: 5px;
  }
  .brand img {
    width: 43px;
  }
  .header .button {
    font-size: 12px;
    min-height: 44px;
    padding: 9px 11px;
    gap: 7px;
  }
  .header nav {
    gap: 8px;
    justify-content: space-around;
  }
  .header nav a {
    font-size: 13px;
  }
  .hero {
    grid-template-columns: 1fr;
    padding-top: 15px;
    padding-bottom: 40px;
    gap: 35px;
  }
  .hero-copy {
    padding-block: 15px 0;
  }
  .availability {
    font-size: 12px;
    margin-bottom: 22px;
  }
  h1 {
    font-size: clamp(43px, 11.5vw, 64px);
    letter-spacing: -2.6px;
    line-height: 1.03;
  }
  .hero-description {
    font-size: 18px;
    max-width: 340px;
    margin-top: 22px;
  }
  .hero-actions {
    gap: 15px;
    margin-top: 25px;
  }
  .hero-actions .button {
    font-size: 15px;
    padding-inline: 20px;
    min-height: 54px;
  }
  .text-link {
    font-size: 13px;
    gap: 7px;
  }
  .hero-note {
    font-size: 12px;
    max-width: 310px;
  }
  .hero-facts {
    flex-direction: row;
    gap: 20px;
    margin-top: 23px;
    padding-top: 20px;
    max-width: none;
  }
  .hero-facts > div + div {
    border-left: 1px solid var(--line);
    padding-left: 20px;
  }
  .hero-facts strong {
    font-size: 20px;
    letter-spacing: -0.6px;
  }
  .hero-facts strong span {
    font-size: 14px;
  }
  .hero-facts p {
    font-size: 11px;
  }
  .arena-scene {
    min-height: 590px;
    padding: 149px 27px 65px;
    border-radius: 44% 44% 25px 25px;
    margin-top: 16px;
  }
  .demo-card {
    padding: 23px;
  }
  .demo-top h2 {
    font-size: 16px;
  }
  .equation {
    font-size: 47px;
  }
  .scene-caption {
    font-size: 12px;
  }
  .symbol-plus {
    left: 12%;
  }
  .symbol-divide {
    right: 13%;
  }
  .subject-line {
    padding-block: 16px;
  }
  .subject-line .wrap {
    justify-content: center;
    gap: 10px 17px;
    font-size: 13px;
  }
  .subject-line b {
    font-size: 17px;
  }
  .section-space {
    padding-block: 54px;
  }
  h2 {
    font-size: 33px;
    letter-spacing: -1.3px;
  }
  .section-heading {
    display: block;
    margin-bottom: 28px;
  }
  .section-heading > p {
    margin-top: 18px;
    font-size: 15px;
  }
  .arena-mode {
    min-height: 365px;
    padding: 27px;
    grid-template-columns: 1fr;
  }
  .mode-copy {
    max-width: 100%;
  }
  .mode-copy h3 {
    font-size: 37px;
  }
  .mode-copy p {
    max-width: 310px;
  }
  .minute-art {
    display: none;
  }
  .other-modes {
    grid-template-columns: 1fr;
    gap: 27px;
  }
  .other-modes article {
    flex-direction: row;
    gap: 17px;
  }
  .feature-icon {
    flex: 0 0 47px;
    height: 47px;
    border-radius: 14px;
  }
  .other-modes h3 {
    font-size: 20px;
  }
  .other-modes p {
    font-size: 15px;
  }
  .steps {
    grid-template-columns: 1fr;
    gap: 28px;
    margin-top: 32px;
  }
  .steps li {
    padding: 22px 0 0 62px;
  }
  .step-number {
    position: absolute;
    top: 24px;
    left: 0;
    width: 39px;
    height: 39px;
  }
  .steps h3 {
    font-size: 22px;
  }
  .steps p {
    font-size: 15px;
    margin-top: 9px;
  }
  .parents-section {
    grid-template-columns: minmax(0, 1fr);
    gap: 39px;
  }
  .parent-art {
    min-height: 380px;
    padding: 30px;
  }
  .notebook {
    width: min(275px, 100%);
    max-width: 100%;
    padding: 25px;
  }
  .notebook > span {
    font-size: 49px;
  }
  .notebook > p {
    font-size: 13px;
  }
  .notebook-bottom img {
    width: 80px;
  }
  .notebook-bottom > span {
    font-size: 16px;
  }
  .parent-star {
    right: 15px;
    font-size: 73px;
  }
  .parents-copy .lead {
    font-size: 19px;
  }
  .parents-copy > p {
    font-size: 15px;
  }
  .faq-section {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .faq-heading h2 br {
    display: none;
  }
  .faq-heading p {
    margin-top: 15px;
  }
  .questions summary {
    font-size: 16px;
    padding-block: 22px;
    gap: 15px;
  }
  .questions details > p {
    font-size: 15px;
    padding-right: 10px;
  }
  .final-card {
    padding: 33px 27px;
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
    border-radius: 23px;
  }
  .final-card h2 {
    font-size: 34px;
    letter-spacing: -1.5px;
  }
  .final-card p {
    font-size: 15px;
  }
  .final-card > img {
    width: 175px;
    align-self: flex-end;
    margin-top: -7px;
  }
  .final-card .button {
    min-height: 53px;
    font-size: 15px;
  }
  .footer {
    padding-top: 35px;
  }
  .footer-top {
    flex-wrap: wrap;
    gap: 16px;
    padding-bottom: 23px;
  }
  .footer-email {
    font-size: 17px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 13px;
    padding-top: 20px;
  }
  .footer-bottom > a {
    align-items: center;
  }
  .contact-main {
    padding-block: 45px;
  }
  .tariff-options {
    grid-template-columns: 1fr;
    border-radius: 22px;
  }
  .tariff-option {
    padding: 26px;
  }
  .tariff-family {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .tariff-price {
    font-size: 54px;
    margin-top: 16px;
  }
  .contact-main > p {
    font-size: 17px;
  }
  .contact-main .contact-email {
    font-size: 23px;
  }
  .merchant-box {
    padding: 23px;
  }
  .merchant-box p {
    font-size: 16px;
  }
}
@media (max-width: 360px) {
  .wrap {
    width: calc(100% - 32px);
  }
  .header .brand {
    font-size: 12px;
  }
  .header .brand img {
    width: 38px;
  }
  .header .button {
    font-size: 11px;
    padding-inline: 9px;
  }
  .header nav {
    gap: 8px;
  }
  .hero-actions {
    gap: 12px;
  }
  .hero-actions .button {
    padding-inline: 18px;
  }
  .hero-facts {
    gap: 15px;
  }
  .hero-facts > div + div {
    padding-left: 15px;
  }
  .hero-facts strong {
    font-size: 18px;
  }
  .arena-scene {
    padding-inline: 15px;
  }
  .demo-card {
    padding: 20px;
  }
  .equation {
    font-size: 43px;
  }
  .final-card {
    padding: 27px 23px;
  }
  .final-card h2 {
    font-size: 30px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}