@font-face {
  font-family: Inter Variable;
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(/fonts/inter-cyrillic-ext-wght-normal.woff2)
    format("woff2-variations");
  unicode-range:
    U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
  font-family: Inter Variable;
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(/fonts/inter-cyrillic-wght-normal.woff2) format("woff2-variations");
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: Inter Variable;
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(/fonts/inter-greek-ext-wght-normal.woff2) format("woff2-variations");
  unicode-range: U+1F00-1FFF;
}
@font-face {
  font-family: Inter Variable;
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(/fonts/inter-greek-wght-normal.woff2) format("woff2-variations");
  unicode-range:
    U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF;
}
@font-face {
  font-family: Inter Variable;
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(/fonts/inter-vietnamese-wght-normal.woff2) format("woff2-variations");
  unicode-range:
    U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1,
    U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329,
    U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: Inter Variable;
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(/fonts/inter-latin-ext-wght-normal.woff2) format("woff2-variations");
  unicode-range:
    U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304,
    U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB,
    U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: Inter Variable;
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(/fonts/inter-latin-wght-normal.woff2) format("woff2-variations");
  unicode-range:
    U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212,
    U+2215, U+FEFF, U+FFFD;
}
:root {
  font-family:
    Inter Variable,
    Inter,
    sans-serif;
  color: #1f2536;
  background: #f8f9fd;
  font-synthesis: none;
  font-optical-sizing: auto;
  --ink: #1f2536;
  --paper: #f8f9fd;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 30px;
}
body {
  margin: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
}
h1,
h2,
p {
  margin: 0;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid #617de6;
  outline-offset: 5px;
}
h1,
h2 {
  font-family:
    Playfair Display Variable,
    Georgia,
    serif;
  font-weight: 800;
}
p {
  line-height: 1.7;
}
.site-shell {
  max-width: 1440px;
  margin: auto;
  position: relative;
  overflow: clip;
  container-type: inline-size;
  background:
    radial-gradient(ellipse 50% 6% at 65% 11%, #e2fff06b, transparent),
    radial-gradient(ellipse 60% 8% at 5% 33%, #e4fff66b, transparent),
    radial-gradient(ellipse 50% 8% at 95% 55%, #e2fff06b, transparent),
    radial-gradient(ellipse 50% 8% at 6% 85%, #e2fff06b, transparent),
    linear-gradient(#f8f9fd, #fff);
}
.artwork {
  display: block;
  width: 100%;
  height: 100%;
}
.artwork > svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}
.site-header {
  position: absolute;
  z-index: 10;
  top: 3.3333cqw;
  left: 9.7222%;
  width: 80.5556%;
  height: 5.6944cqw;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.3889cqw;
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 4px 16px #1f25360d;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: clamp(20px, 1.9444cqw, 28px);
  font-weight: 700;
}
.brand .artwork {
  width: 4.0278cqw;
  height: 4.0278cqw;
  min-width: 40px;
  min-height: 40px;
}
.site-header nav {
  display: flex;
  gap: 2.7778cqw;
  font-size: clamp(14px, 1.3889cqw, 20px);
  font-weight: 500;
}
.site-header nav a {
  position: relative;
  padding: 12px 0;
}
.site-header nav a:after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s;
}
.site-header nav a:hover:after {
  transform: scaleX(1);
}
.download-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #fff;
  background: var(--ink);
  border-radius: 12px;
  min-height: 44px;
  padding: 0 22px;
  height: 4.3056cqw;
  font-size: clamp(14px, 1.1111cqw, 16px);
  font-weight: 500;
  transition:
    transform 0.25s,
    box-shadow 0.25s;
}
.app-store-badge {
  transition:
    transform 0.25s,
    box-shadow 0.25s;
}
.download-link:hover,
.app-store-badge:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 22px #1f253626;
}
.download-link .artwork {
  width: 18px;
  height: 24px;
}
.site-header .download-link {
  height: 2.9861cqw;
  min-height: 40px;
  width: 12.6389cqw;
  font-weight: 700;
  font-size: clamp(14px, 1.3889cqw, 20px);
  border-radius: 10px;
}
.hero {
  position: relative;
  height: 88.8889cqw;
}
.hero-copy {
  position: absolute;
  top: 14.5833cqw;
  left: 5%;
  width: 90%;
  text-align: center;
}
.hero h1 {
  font-size: 4.8611cqw;
  line-height: 1.142857;
  font-weight: 900;
  letter-spacing: 0;
}
.hero h1 u {
  text-underline-offset: 0.12em;
  text-decoration-thickness: 2px;
}
.hero-copy > p {
  font-size: 1.3889cqw;
  margin: 26px auto 22px;
  line-height: 1.4;
}
.hero-scene {
  position: absolute;
  top: 36.8056cqw;
  left: 0;
  width: 100%;
  height: 48.6806cqw;
}
.hero-tablet {
  position: absolute;
  left: 17.0139%;
  top: 0;
  width: 65.7639%;
  height: 100%;
}
.hero-mascot {
  position: absolute;
  left: 71.4583%;
  top: 60.2%;
  width: 20.5556%;
  height: 39.66%;
  z-index: 2;
}
.hero-arrows {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.handwritten {
  font-family:
    Caveat Variable,
    cursive;
  font-size: 2.0833cqw;
  line-height: 1;
}
.snap-note {
  position: absolute;
  left: 8.1944%;
  top: 62.36%;
  transform: rotate(-5deg);
}
.deeper-note {
  position: absolute;
  left: 84.3056%;
  top: 23.4%;
  text-align: right;
  transform: rotate(3deg);
}
@media (max-width: 767px) {
  .site-header {
    top: 20px;
    left: 5%;
    width: 90%;
    height: 64px;
    padding: 0 12px;
    border-radius: 16px;
  }
  .brand {
    font-size: 20px;
    gap: 7px;
  }
  .site-header nav {
    position: absolute;
    top: 74px;
    left: 0;
    width: 100%;
    justify-content: center;
    gap: 24px;
    font-size: 13px;
  }
  .site-header .download-link {
    width: auto;
    min-height: 40px;
    padding: 0 14px;
    font-size: 13px;
  }
  .hero {
    height: auto;
    padding-top: 170px;
    padding-bottom: 56px;
  }
  .hero-copy {
    position: relative;
    inset: auto;
    width: 92%;
    margin: auto;
  }
  .hero h1 {
    font-size: clamp(30px, 8cqw, 54px);
    line-height: 1.15;
  }
  .hero-copy > p {
    font-size: 16px;
    max-width: 330px;
    margin: 22px auto;
  }
  .download-link {
    height: 52px;
    font-size: 14px;
  }
  .hero-scene {
    position: relative;
    top: auto;
    margin-top: 36px;
    height: 62cqw;
  }
  .hero-tablet {
    left: 5%;
    width: 90%;
    height: 100%;
  }
  .hero-mascot {
    left: 73%;
    top: 63%;
    width: 24%;
    height: 36%;
  }
  .hero-arrows,
  .snap-note,
  .deeper-note {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:before,
  *:after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}
svg text[font-family="Inter"] {
  font-family:
    Inter Variable,
    sans-serif;
}
svg text[font-family="Playfair Display"] {
  font-family:
    Playfair Display Variable,
    serif;
}
svg text[font-family="Caveat"] {
  font-family:
    Caveat Variable,
    cursive;
}
h2 {
  font-size: 2.3674cqw;
  line-height: 1.15;
}
.feature {
  position: relative;
  height: 45.1389cqw;
}
.feature-copy {
  position: absolute;
  width: 28.5%;
  z-index: 2;
}
.feature-copy p {
  font-size: 1.0417cqw;
  line-height: 1.7;
  margin-top: 24px;
  max-width: 380px;
}
.feature-whiteboard .feature-copy {
  left: 6.875%;
  top: 30.9%;
}
.whiteboard-tablet {
  position: absolute;
  left: 37.2917%;
  top: 9.08%;
  width: 47.3611%;
  height: 78.1538%;
}
.whiteboard-highlight {
  position: absolute;
  left: 58.3333%;
  top: 20%;
  width: 35.9722%;
  height: 43.0769%;
  z-index: 3;
}
.voice-wave {
  position: absolute;
  left: 20.8333%;
  top: 49.2308%;
  width: 24.3056%;
  height: 21.5385%;
  z-index: 3;
}
.feature-geometry .feature-copy {
  left: 63.8889%;
  top: 26.3%;
  width: 29%;
}
.geometry-tablet {
  position: absolute;
  left: 12.9861%;
  top: 5.6923%;
  width: 50.1389%;
  height: 83.8462%;
}
.geometry-highlight {
  position: absolute;
  left: 5.625%;
  top: 22.6154%;
  width: 35.9722%;
  height: 44.7692%;
  z-index: 2;
}
.geometry-mascot {
  position: absolute;
  left: 63.2639%;
  top: 50.1538%;
  width: 18.6111%;
  height: 38.6154%;
}
.learning-flow {
  height: 45.1389cqw;
  padding-top: 6.25cqw;
}
.section-heading {
  text-align: center;
}
.section-heading p {
  font-size: 1.0417cqw;
  line-height: 1.7;
  margin: 24px auto 0;
}
.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 3.2639cqw;
  width: 79.0278%;
  margin: 3.3333cqw auto 0;
  padding: 0;
}
.step {
  position: relative;
}
.step-number {
  display: grid;
  place-items: center;
  width: 3.2639cqw;
  height: 3.2639cqw;
  margin: 0 auto 2.0833cqw;
  border: 1px solid #8a8a8a;
  border-radius: 50%;
  background: #8a8a8a;
  color: #fff;
  box-shadow: inset 0 0 0 3px var(--paper);
  font-size: 2.0833cqw;
  font-weight: 500;
}
.step-arrow {
  position: absolute;
  width: 1.0417cqw;
  height: 1.6667cqw;
  left: calc(100% + 1.1cqw);
  top: 0.8cqw;
}
.step h3 {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 2.9861cqw;
  font-weight: 500;
  font-size: 1.3889cqw;
  margin: 0 0 1.6667cqw;
  border-radius: 12px;
  background: #f3f3f3;
  color: #000;
}
.step p {
  height: 10.0694cqw;
  background: #f3f3f3;
  border-radius: 12px;
  padding: 1.3889cqw 1.0417cqw;
  font-size: 1.3889cqw;
  line-height: 1.275;
  color: #8a8a8a;
}
.input-methods {
  height: 56.25cqw;
  padding-top: 4.7222cqw;
  position: relative;
}
.input-track {
  display: flex;
  position: relative;
  width: 100%;
  overflow: auto;
  scrollbar-width: none;
  padding: 0;
  scroll-snap-type: x proximity;
  overscroll-behavior-x: contain;
  margin-top: 1.5278cqw;
  mask-image: linear-gradient(
    to right,
    transparent,
    #000 9%,
    #000 90%,
    transparent
  );
}
.input-track::-webkit-scrollbar,
.review-track::-webkit-scrollbar {
  display: none;
}
.input-card {
  flex: 0 0 33.5417%;
  height: 33.3333cqw;
  scroll-snap-align: center;
}
.input-card:first-child {
  margin-left: -16.1806%;
}
.input-card + .input-card {
  margin-left: -0.4167%;
}
.input-card svg {
  overflow: visible;
}
.testimonials {
  position: relative;
  height: 48.6111cqw;
}
.review-heading {
  position: absolute;
  left: 6.9444%;
  top: 6.25cqw;
  width: 31.5%;
}
.review-heading p {
  font-size: 1.0417cqw;
  line-height: 1.7;
  margin-top: 24px;
  max-width: 385px;
}
.review-track {
  display: flex;
  gap: 2.2222cqw;
  overflow: auto;
  scrollbar-width: none;
  scroll-snap-type: x proximity;
  overscroll-behavior-x: contain;
  padding: 12px 10px;
}
.review-top {
  position: absolute;
  left: 41.3889%;
  top: 2.9167cqw;
  width: 70%;
}
.review-bottom {
  position: absolute;
  left: -7.2222%;
  top: 21.1806cqw;
  width: 140%;
}
.review-card {
  flex: 0 0 31.3194cqw;
  margin: 0;
  height: 17.0139cqw;
  padding: 1.3889cqw 1.5972cqw;
  background: #fff;
  border-radius: 22px;
  box-shadow: 0 3px 14px #0000000d;
  scroll-snap-align: center;
}
.review-card figcaption {
  display: flex;
  gap: 1.1111cqw;
  align-items: center;
  height: 5.1389cqw;
}
.review-card figcaption > img {
  width: 5.1389cqw;
  height: 5.1389cqw;
  border-radius: 50%;
  object-fit: cover;
}
.review-card figcaption > div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.review-card figcaption .artwork {
  width: 9.375cqw;
  height: 1.7361cqw;
}
.review-card figcaption span {
  font-size: 1.3889cqw;
  color: #000;
}
.review-card blockquote {
  font-size: 1.1111cqw;
  line-height: 1.59375;
  color: #6f6f6f;
  margin: 14px 0 0;
}
.download-section {
  height: 40.2778cqw;
  position: relative;
}
.download-copy {
  position: absolute;
  left: 15%;
  width: 70%;
  top: 5.5556cqw;
  text-align: center;
}
.eyebrow {
  font-size: 1.25cqw;
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: 1.3;
}
.download-copy h2 {
  font-family:
    Inter Variable,
    sans-serif;
  font-size: 3.4722cqw;
  line-height: 1.2;
  font-weight: 700;
  margin-top: 32px;
}
.download-link.large {
  height: 6.3889cqw;
  font-size: 1.9444cqw;
  padding: 0 34px;
  margin-top: 40px;
  border-radius: 16px;
}
.download-link.large .artwork {
  height: 32px;
  width: 26px;
}
.download-caption {
  font-size: 1.1111cqw;
  margin-top: 30px;
}
.cta-left {
  position: absolute;
  left: 6.9444%;
  top: 5.5556cqw;
  width: 20.8333%;
  height: 20.8333cqw;
}
.cta-left .handwritten {
  position: absolute;
  left: 10%;
  top: 35%;
  width: 65%;
  text-align: right;
  transform: rotate(-5deg);
}
.cta-left > .artwork {
  position: absolute;
  inset: 0;
}
.cta-right {
  position: absolute;
  left: 79.1667%;
  top: 9.375cqw;
  width: 12.5%;
  height: 18.0556cqw;
}
.cta-right > .artwork {
  height: 12.5cqw;
}
.cta-right .handwritten {
  text-align: center;
  transform: rotate(-8deg);
  margin-top: -6px;
}
@media (min-width: 768px) and (max-width: 1100px) {
  .feature-copy p,
  .section-heading p,
  .review-heading p {
    font-size: 14px;
  }
  .feature-copy p {
    margin-top: 14px;
  }
  .review-card blockquote {
    font-size: 12px;
  }
  .review-card {
    height: auto;
    min-height: 200px;
  }
  .review-heading {
    width: 30%;
  }
  .review-heading h2 {
    font-size: 25px;
  }
  .download-copy h2,
  .download-link.large {
    margin-top: 24px;
  }
}
@media (max-width: 767px) {
  h2 {
    font-size: clamp(28px, 6.4cqw, 38px);
    line-height: 1.18;
  }
  .feature {
    height: auto;
    display: flex;
    flex-direction: column;
    padding: 42px 6% 35px;
  }
  .feature-copy,
  .feature-whiteboard .feature-copy,
  .feature-geometry .feature-copy {
    position: relative;
    inset: auto;
    width: 100%;
    text-align: center;
    order: 0;
  }
  .feature-copy p {
    font-size: 16px;
    line-height: 1.65;
    max-width: 360px;
    margin: 20px auto 0;
  }
  .whiteboard-tablet,
  .geometry-tablet {
    position: relative;
    inset: auto;
    width: 100%;
    height: auto;
    aspect-ratio: 682/508;
    order: 1;
    margin-top: 38px;
  }
  .whiteboard-highlight {
    left: 47%;
    top: 55%;
    width: 50%;
    height: auto;
    aspect-ratio: 518/280;
  }
  .voice-wave {
    left: 3%;
    top: 67%;
    width: 40%;
    height: auto;
    aspect-ratio: 350/140;
  }
  .geometry-highlight {
    left: 1%;
    top: 57%;
    width: 48%;
    height: auto;
    aspect-ratio: 518/291;
  }
  .geometry-mascot {
    left: 72%;
    top: 76%;
    width: 25%;
    height: auto;
    aspect-ratio: 296/278;
    z-index: 3;
  }
  .learning-flow {
    height: auto;
    padding: 70px 6% 30px;
  }
  .section-heading p {
    font-size: 16px;
    max-width: 350px;
    margin-top: 20px;
  }
  .desktop-break {
    display: none;
  }
  .steps {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 22px;
    margin: 38px 0 0;
  }
  .step {
    display: grid;
    grid-template-columns: 48px 1fr;
    column-gap: 16px;
  }
  .step-number {
    width: 44px;
    height: 44px;
    font-size: 26px;
    margin: 0;
    grid-row: 1/3;
    align-self: start;
  }
  .step h3 {
    height: 43px;
    font-size: 18px;
    margin: 0 0 9px;
    justify-content: flex-start;
    padding: 0 18px;
  }
  .step p {
    height: auto;
    min-height: 70px;
    font-size: 16px;
    padding: 16px 18px;
    line-height: 1.5;
  }
  .step-arrow {
    display: none;
  }
  .input-methods {
    height: auto;
    padding: 72px 0 35px;
  }
  .input-methods > .section-heading {
    padding: 0 6%;
  }
  .input-track {
    margin-top: 22px;
    padding: 8px 6%;
    gap: 12px;
    mask-image: none;
    scroll-snap-type: x mandatory;
  }
  .input-card {
    flex: 0 0 90%;
    height: auto;
    aspect-ratio: 483/480;
  }
  .input-card:first-child {
    margin-left: 0;
  }
  .input-card + .input-card {
    margin-left: 0;
  }
  .testimonials {
    height: auto;
    padding: 48px 0 40px;
  }
  .review-heading {
    position: relative;
    inset: auto;
    width: 100%;
    padding: 0 6%;
    text-align: center;
  }
  .review-heading h2 br {
    display: none;
  }
  .review-heading p {
    font-size: 16px;
    max-width: 350px;
    margin: 20px auto 0;
  }
  .review-track {
    position: relative;
    inset: auto;
    width: 100%;
    gap: 16px;
    padding: 12px 6%;
    margin-top: 20px;
  }
  .review-bottom {
    margin-top: 0;
  }
  .review-card {
    flex: 0 0 90%;
    height: auto;
    min-height: 260px;
    padding: 22px;
    border-radius: 20px;
  }
  .review-card figcaption {
    height: 60px;
    gap: 14px;
  }
  .review-card figcaption > img {
    width: 60px;
    height: 60px;
  }
  .review-card figcaption .artwork {
    width: 115px;
    height: 22px;
  }
  .review-card figcaption span {
    font-size: 18px;
  }
  .review-card blockquote {
    font-size: 15px;
    line-height: 1.7;
    margin-top: 16px;
  }
  .download-section {
    height: auto;
    min-height: 480px;
    padding: 66px 6% 80px;
  }
  .download-copy {
    position: relative;
    inset: auto;
    width: 100%;
  }
  .eyebrow {
    font-size: 12px;
    letter-spacing: 0.08em;
  }
  .download-copy h2 {
    font-size: clamp(29px, 7cqw, 42px);
    line-height: 1.2;
    margin-top: 24px;
  }
  .download-copy h2 br {
    display: none;
  }
  .download-link.large {
    height: 62px;
    font-size: 18px;
    margin-top: 30px;
    padding: 0 24px;
    border-radius: 12px;
  }
  .download-link.large .artwork {
    width: 22px;
    height: 28px;
  }
  .download-caption {
    font-size: 14px;
    margin-top: 24px;
  }
  .cta-left,
  .cta-right {
    display: none;
  }
}
.review-card figcaption > div {
  flex: 1;
  flex-direction: row;
  align-items: flex-end;
  justify-content: space-between;
  gap: 8px;
  padding-top: 22px;
}
.review-card figcaption .artwork {
  flex-shrink: 0;
  width: 8.8194cqw;
  height: 1.4583cqw;
}
.review-card figcaption > div > span {
  white-space: nowrap;
}
.review-card:not(:has(figcaption > img)) figcaption > div {
  padding-left: 5.6944cqw;
}
@media (max-width: 767px) {
  .review-card figcaption > div {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding-top: 0;
    gap: 6px;
  }
  .review-card figcaption .artwork {
    width: 105px;
    height: 18px;
  }
  .review-card:not(:has(figcaption > img)) figcaption > div {
    padding-left: 0;
  }
}
@media (min-width: 768px) {
  .input-card:first-child {
    margin-left: 0;
  }
  .review-top {
    width: 58.6111%;
  }
  .review-bottom {
    left: 0;
    width: 100%;
  }
}
@media (min-width: 768px) and (max-width: 1100px) {
  .testimonials {
    height: auto;
    padding: 40px 0 60px;
  }
  .review-heading {
    position: relative;
    inset: auto;
    width: 100%;
    text-align: center;
    padding: 0 6%;
  }
  .review-heading h2 br {
    display: none;
  }
  .review-heading p {
    margin: 20px auto;
  }
  .review-track {
    position: relative;
    inset: auto;
    width: 100%;
    padding: 12px 6%;
  }
  .review-card {
    flex-basis: 410px;
    min-height: 240px;
    padding: 20px;
  }
  .review-card figcaption {
    height: 58px;
  }
  .review-card figcaption > img {
    width: 58px;
    height: 58px;
  }
  .review-card figcaption > div > span {
    font-size: 17px;
  }
  .review-card figcaption .artwork {
    width: 105px;
    height: 18px;
  }
  .review-card blockquote {
    font-size: 15px;
  }
  .review-heading h2 {
    font-size: 32px;
  }
  .step p {
    font-size: 14px;
    height: auto;
    min-height: 115px;
  }
  .learning-flow {
    height: auto;
    min-height: 460px;
    padding-bottom: 60px;
  }
}
.home-surface {
  position: relative;
  isolation: isolate;
  overflow: clip;
  background: #f8f9fd;
}
.home-surface > .site-shell {
  background: transparent;
}
.page-background {
  position: absolute;
  inset: 0;
  pointer-events: none;
  height: 100%;
  z-index: 0;
}
.page-background > svg {
  height: 100%;
  width: 100%;
}
main {
  position: relative;
}
@media (max-width: 1100px) {
  .page-background {
    display: none;
  }
  .home-surface {
    background:
      radial-gradient(ellipse 80% 12% at 75% 10%, #e2fff04a, transparent),
      radial-gradient(ellipse 80% 12% at 5% 35%, #e4fff64a, transparent),
      linear-gradient(#f8f9fd, #fff);
  }
}
.header-layer {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  width: min(100%, 1440px);
  height: 0;
  margin-inline: auto;
  container-type: inline-size;
  pointer-events: none;
}
.header-layer .site-header {
  pointer-events: auto;
  background: #ffffffeb;
  border: 1px solid rgba(255, 255, 255, 0.75);
  box-shadow: 0 6px 28px #1f253612;
}
@supports (
  (backdrop-filter: blur(20px)) or (-webkit-backdrop-filter: blur(20px))
) {
  .header-layer .site-header {
    background: #ffffff9e;
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    backdrop-filter: blur(20px) saturate(160%);
  }
}
.site-header .download-link {
  white-space: nowrap;
  flex-shrink: 0;
}
html {
  scroll-padding-top: clamp(112px, 11.2vw, 162px);
}
@media (max-width: 767px) {
  .header-layer .site-header {
    top: 16px;
    height: 64px;
    display: flex;
    gap: 10px;
    padding: 12px;
  }
  .site-header nav {
    display: none;
  }
  html {
    scroll-padding-top: 100px;
  }
}
[data-lesson-highlight] {
  height: auto;
  aspect-ratio: 1506 / 777;
  transform-origin: 0 0;
  pointer-events: none;
}
[data-lesson-highlight] > img {
  display: block;
  width: 100%;
  height: auto;
}
@media (prefers-reduced-motion: no-preference) {
  [data-lesson-highlight] {
    opacity: 0;
  }
}
.feature-scene {
  position: absolute;
  inset: 0;
}
@media (max-width: 767px) {
  .feature-scene {
    position: relative;
    inset: auto;
    order: 1;
    width: 100%;
    aspect-ratio: 682 / 508;
    margin-top: 38px;
  }
  .feature-geometry .feature-scene {
    aspect-ratio: 722 / 545;
  }
  .whiteboard-tablet,
  .geometry-tablet {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    aspect-ratio: auto;
  }
  .whiteboard-highlight {
    left: 46%;
    top: 14%;
    width: 58%;
  }
  .voice-wave {
    left: -3%;
    top: 58%;
    width: 40%;
  }
  .geometry-highlight {
    left: -5%;
    top: 20%;
    width: 60%;
  }
  .geometry-mascot {
    left: 75%;
    top: 65%;
    width: 28%;
  }
}
.review-track {
  padding-top: 38px;
  padding-bottom: 20px;
}
.review-card {
  --review-avatar: 5.1389cqw;
  position: relative;
  height: auto;
  min-height: 17.0139cqw;
  padding: 1.3889cqw 2.3611cqw 2.0833cqw;
  overflow: visible;
  border-radius: 16px;
}
.review-card figcaption {
  height: 2.0833cqw;
  gap: 0;
}
.review-card figcaption > img {
  position: absolute;
  width: var(--review-avatar);
  height: var(--review-avatar);
  left: 1.7361cqw;
  top: -1.4583cqw;
  object-fit: cover;
  border-radius: 50%;
}
.review-card figcaption > div,
.review-card:not(:has(figcaption > img)) figcaption > div {
  display: flex;
  flex: 1;
  min-width: 0;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  padding: 0 0 0 5.5556cqw;
  gap: 12px;
}
.review-card figcaption > div > span {
  font-size: 1.3889cqw;
}
.review-card figcaption .artwork {
  width: 8.8194cqw;
  height: 1.4583cqw;
  flex-shrink: 0;
}
.review-card blockquote {
  margin: 1.1111cqw 0 0;
}
@media (max-width: 1100px) {
  .review-card {
    --review-avatar: 70px;
    flex-basis: 440px;
    min-height: 245px;
    padding: 20px 28px 26px;
  }
  .review-card figcaption {
    height: 30px;
  }
  .review-card figcaption > img {
    left: 24px;
    top: -20px;
  }
  .review-card figcaption > div,
  .review-card:not(:has(figcaption > img)) figcaption > div {
    padding-left: 80px;
    gap: 14px;
  }
  .review-card figcaption > div > span {
    font-size: 18px;
  }
  .review-card figcaption .artwork {
    width: 112px;
    height: 19px;
  }
  .review-card blockquote {
    font-size: 16px;
    line-height: 1.6;
    margin-top: 16px;
  }
}
@media (max-width: 767px) {
  .review-card {
    --review-avatar: 62px;
    flex-basis: 100%;
    padding: 18px 22px 24px;
  }
  .review-card figcaption {
    height: 50px;
  }
  .review-card figcaption > img {
    left: 20px;
    top: -20px;
  }
  .review-card figcaption > div,
  .review-card:not(:has(figcaption > img)) figcaption > div {
    padding-left: 74px;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
  }
  .review-card figcaption > div > span {
    font-size: 17px;
  }
  .review-card figcaption .artwork {
    width: 100px;
    height: 17px;
  }
  .review-card blockquote {
    margin-top: 14px;
    font-size: 15px;
  }
}
.review-avatar-placeholder {
  position: absolute;
  display: grid;
  place-items: center;
  width: var(--review-avatar);
  height: var(--review-avatar);
  left: 1.7361cqw;
  top: -1.4583cqw;
  border-radius: 50%;
  background: #e7eaf2;
  color: #1f2536;
  font-size: 1.8056cqw;
  font-weight: 600;
}
@media (max-width: 1100px) {
  .review-avatar-placeholder {
    left: 24px;
    top: -20px;
    font-size: 25px;
  }
}
@media (max-width: 767px) {
  .review-avatar-placeholder {
    left: 20px;
    font-size: 22px;
  }
}
@media (max-width: 480px) {
  .review-card {
    --review-avatar: 74px;
    flex-basis: min(100%, 347px);
    min-height: 332px;
    padding: 64px 30px 30px;
  }
  .review-card figcaption {
    height: auto;
  }
  .review-card figcaption > img,
  .review-avatar-placeholder {
    left: 50%;
    top: -21px;
    transform: translate(-50%);
  }
  .review-card figcaption > div,
  .review-card:not(:has(figcaption > img)) figcaption > div {
    padding: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
  }
  .review-card figcaption > div > span {
    font-size: 20px;
    line-height: 24px;
  }
  .review-card figcaption .artwork {
    width: 127px;
    height: 21px;
  }
  .review-card blockquote {
    margin-top: 16px;
    font-size: 16px;
    line-height: 1.6;
  }
}
@media (min-width: 1101px) {
  .testimonials {
    display: grid;
    grid-template-columns: 41.3889% 58.6111%;
    row-gap: 2.2222cqw;
    align-content: start;
    height: auto;
    min-height: 48.6111cqw;
    padding-top: 4.0972cqw;
    padding-bottom: 5.5556cqw;
  }
  .review-top,
  .review-bottom {
    position: relative;
    inset: auto;
    width: 100%;
    margin: 0 0 -24px;
    padding-top: 1.4583cqw;
    padding-bottom: 24px;
  }
  .review-top {
    grid-column: 2;
  }
  .review-bottom {
    grid-column: 1 / -1;
  }
}
@media (min-width: 768px) and (max-width: 1100px) {
  .feature h2,
  .section-heading h2,
  .review-heading h2 {
    font-size: 32px;
  }
  .feature-whiteboard .feature-copy {
    top: 16%;
  }
  .feature-whiteboard .voice-wave {
    left: 24%;
    top: 70%;
  }
  .feature-geometry .feature-copy {
    top: 12%;
  }
  .feature-geometry .geometry-mascot {
    top: 62%;
  }
}
.site-header {
  gap: clamp(16px, 2.7778cqw, 40px);
}
.brand {
  flex-shrink: 0;
}
.site-header nav {
  margin-left: auto;
  white-space: nowrap;
}
.contact-menu {
  --contact-dropdown-gap: 20px;
  position: relative;
  flex-shrink: 0;
  font-size: clamp(14px, 1.3889cqw, 20px);
  font-weight: 500;
}
.contact-menu summary {
  position: relative;
  padding: 12px 0;
  list-style: none;
  cursor: pointer;
}
.contact-menu summary::-webkit-details-marker {
  display: none;
}
.contact-menu summary:after {
  content: "";
  position: absolute;
  bottom: 4px;
  inset-inline: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s;
}
.contact-menu[open] summary:after,
.contact-menu summary:hover:after {
  transform: scaleX(1);
}
.contact-menu summary:focus-visible {
  outline: 3px solid #617de6;
  outline-offset: 5px;
  border-radius: 2px;
}
.contact-dropdown {
  position: absolute;
  top: calc(100% + var(--contact-dropdown-gap));
  left: -12px;
  width: 166px;
  padding: 11px 12px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 20px #7b5a3a1a;
}
.contact-dropdown:before {
  content: "";
  position: absolute;
  bottom: 100%;
  inset-inline: 0;
  height: var(--contact-dropdown-gap);
}
.contact-dropdown a {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 43px;
  padding: 6px 8px;
  border-radius: 6px;
  font-size: 20px;
  font-weight: 400;
  white-space: nowrap;
}
.contact-dropdown a:hover {
  background: #f3f4f8;
}
.contact-icon {
  display: block;
  flex-shrink: 0;
}
.mobile-menu {
  display: none;
}
.mobile-menu > summary {
  list-style: none;
  cursor: pointer;
}
.mobile-menu > summary::-webkit-details-marker {
  display: none;
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}
.community-badge {
  display: inline-flex;
  width: 182px;
  max-width: 100%;
  flex-shrink: 0;
  vertical-align: middle;
  border-radius: 12px;
  transition:
    transform 0.25s,
    box-shadow 0.25s;
}
.community-badge:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 22px #1f253626;
}
.community-badge img {
  display: block;
  width: 100%;
  height: auto;
}
@media (min-width: 1101px) {
  .site-header {
    gap: clamp(16px, 1.9444cqw, 28px);
  }
  .site-header nav {
    gap: clamp(20px, 2.2222cqw, 32px);
  }
  .contact-menu {
    --contact-dropdown-gap: 26px;
    margin-right: 0;
  }
  .hero {
    height: 98cqw;
  }
  .hero-scene {
    top: 45.4167cqw;
  }
}
@media (min-width: 768px) and (max-width: 1100px) {
  .site-header {
    gap: 20px;
  }
  .brand > span:not(.artwork) {
    display: none;
  }
  .site-header nav {
    gap: 20px;
  }
  .hero {
    height: auto;
    padding-top: 14.5833cqw;
    padding-bottom: 3.4cqw;
  }
  .hero-copy {
    position: relative;
    inset: auto;
    margin-inline: auto;
  }
  .hero-copy > p {
    font-size: 16px;
  }
  .hero-scene {
    position: relative;
    top: auto;
    margin-top: 32px;
  }
}
@media (max-width: 767px) {
  .site-header .brand {
    font-size: 18px;
    gap: 6px;
  }
  .site-header .brand .artwork {
    min-width: 36px;
    min-height: 36px;
  }
  .site-header > .contact-menu,
  .site-header > .download-link {
    display: none;
  }
  .mobile-menu {
    display: block;
    position: relative;
    margin-left: auto;
  }
  .mobile-menu > summary {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
  }
  .mobile-menu > summary:focus-visible {
    outline: 3px solid #617de6;
    outline-offset: 3px;
  }
  .mobile-menu > summary img {
    display: block;
    width: 32px;
    height: 32px;
  }
  .mobile-menu-panel {
    position: absolute;
    top: calc(100% + 24px);
    right: -2px;
    width: min(calc(100vw - 40px), 353px);
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 12px 34px #1f25361a;
  }
  .mobile-menu-panel > a,
  .mobile-contact-menu > summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 100%;
    min-width: 0;
    min-height: 52px;
    padding: 0 20px;
    border-radius: 10px;
    font-size: 20px;
    font-weight: 400;
    line-height: 1.2;
    overflow-wrap: anywhere;
  }
  .mobile-contact-menu > summary {
    list-style: none;
    cursor: pointer;
  }
  .mobile-contact-menu > summary::-webkit-details-marker {
    display: none;
  }
  .mobile-menu-panel > a:hover,
  .mobile-menu-panel > a:focus-visible,
  .mobile-contact-menu > summary:hover,
  .mobile-contact-menu > summary:focus-visible,
  .mobile-contact-menu[open] > summary {
    background: #f3f4f8;
  }
  .mobile-menu-chevron {
    display: block;
    width: 12px;
    height: 12px;
    border-top: 2px solid currentColor;
    border-right: 2px solid currentColor;
    transform: rotate(45deg);
    transition: transform 0.18s;
  }
  .mobile-contact-menu[open] .mobile-menu-chevron {
    transform: rotate(135deg) translate(-2px, 2px);
  }
  .mobile-contact-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 18px 18px 18px 26px;
  }
  .mobile-contact-panel a {
    display: flex;
    align-items: center;
    gap: 16px;
    min-height: 32px;
    color: #202124;
    font-size: 16px;
    font-weight: 700;
    line-height: 1.2;
  }
  .mobile-contact-panel .contact-icon {
    width: 28px;
    height: 28px;
    color: #54585d;
  }
  .mobile-menu-cta {
    justify-content: center;
    min-height: 56px;
    margin-top: 8px;
    color: #fff;
    background: var(--ink);
    font-weight: 700;
  }
  .mobile-menu-cta:hover,
  .mobile-menu-cta:focus-visible {
    background: var(--ink);
  }
  .contact-menu {
    --contact-dropdown-gap: 8px;
    margin-left: auto;
    margin-right: clamp(6px, 2vw, 14px);
    font-size: 13px;
  }
  .contact-menu summary {
    padding-block: 13px;
  }
  .contact-dropdown {
    right: auto;
    left: 0;
    width: 140px;
    padding: 6px;
    border-radius: 10px;
  }
  .contact-dropdown a {
    min-height: 44px;
    padding: 6px 10px;
    gap: 8px;
    font-size: 14px;
    line-height: 1.4;
  }
  .contact-dropdown .contact-icon {
    width: 20px;
    height: auto;
  }
  .site-header .download-link {
    padding-inline: 12px;
  }
  .hero-actions {
    display: grid;
    grid-template-columns: minmax(0, 185fr) minmax(0, 182fr);
    width: min(100%, 379px);
    margin-inline: auto;
    gap: 2.62582%;
    container-type: inline-size;
  }
  .hero-actions .app-store-badge {
    width: 100%;
    min-width: 0;
    border-radius: 3.06346cqw;
  }
  .hero-actions .community-badge {
    width: 100%;
    min-width: 0;
    border-radius: 3.16623cqw;
  }
}
@media (max-width: 320px) {
  .site-header .brand > span:not(.artwork) {
    display: none;
  }
}
@media (min-width: 768px) {
  .header-layer .site-header {
    translate: 0 -12px;
  }
}
.input-track.is-looping {
  scroll-snap-type: none;
  scroll-behavior: auto;
}
@media (min-width: 768px) and (hover: hover) and (pointer: fine) {
  .input-track {
    padding-block: 20px;
    margin-top: calc(1.5278cqw - 20px);
  }
  .input-card {
    position: relative;
  }
  .input-card > .artwork {
    transform-origin: center;
    transition:
      transform 0.28s ease,
      filter 0.28s ease;
  }
  .input-card:hover {
    z-index: 2;
  }
  .input-card:hover > .artwork {
    transform: scale(1.035);
  }
}
[data-geometry-card] {
  height: auto;
  aspect-ratio: 502 / 275;
  transform-origin: 0 0;
  pointer-events: none;
}
@media (prefers-reduced-motion: no-preference) {
  [data-geometry-card] {
    opacity: 0;
  }
}
@media (min-width: 768px) {
  .input-card {
    flex-basis: 30.18753%;
    height: 30cqw;
  }
  .input-card + .input-card {
    margin-left: -0.37503%;
  }
  .input-methods {
    height: 52.9167cqw;
  }
}
@media (max-width: 767px) {
  .input-track {
    gap: 0;
  }
  .input-card + .input-card {
    margin-left: calc(16px - 7.453416%);
  }
}
.learning-flow .step-number {
  background-color: #1f2536;
  border-color: #1f2536;
  color: #fff;
}
.learning-flow .step h3 {
  background-color: #1f2536;
  color: #fff;
}
.learning-flow .step p {
  background-color: #f3f3f3;
  color: #1f2536;
}
@media (min-width: 768px) {
  .feature-geometry {
    height: auto;
    min-height: 45.1389cqw;
    padding-top: 11.8715cqw;
    padding-bottom: 3cqw;
  }
  .feature-geometry .feature-scene {
    height: 45.1389cqw;
  }
  .geometry-details {
    position: relative;
    z-index: 3;
    width: 29%;
    margin-left: 63.8889%;
    display: flex;
    flex-direction: column;
    gap: clamp(32px, 2.5cqw, 40px);
  }
  .feature-geometry .feature-copy {
    position: relative;
    inset: auto;
    width: 100%;
  }
  .geometry-details .geometry-mascot {
    position: relative;
    inset: auto;
    width: 64.1762%;
    height: auto;
    aspect-ratio: 1215 / 1140;
  }
}
@media (max-width: 767px) {
  .feature-geometry {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
  .geometry-details {
    display: contents;
  }
  .feature-geometry .feature-copy {
    grid-area: 1 / 1;
  }
  .feature-geometry .feature-scene {
    grid-area: 2 / 1;
  }
  .geometry-details .geometry-mascot {
    grid-area: 2 / 1;
    position: relative;
    inset: auto;
    align-self: end;
    justify-self: end;
    width: 28%;
    height: auto;
    aspect-ratio: 1215 / 1140;
    margin-right: -3%;
    margin-bottom: 2%;
    z-index: 3;
  }
}
.site-footer[data-footer] {
  background: #f7f8fa;
}
.footer-inner[data-footer] {
  max-width: 1440px;
  min-height: 154px;
  margin-inline: auto;
  padding: 40px 5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}
.footer-contact[data-footer] {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  max-width: 100%;
}
ul[data-footer] {
  display: flex;
  flex-wrap: nowrap;
  justify-content: flex-start;
  list-style: none;
  padding: 0;
  margin: 0;
}
li[data-footer] {
  display: flex;
  align-items: center;
}
li[data-footer] + li[data-footer]:before {
  content: "";
  width: 1px;
  height: 18px;
  margin-inline: 16px;
  background: #b6b8bd;
}
nav[data-footer] a[data-footer],
.footer-placeholder[data-footer] {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 18px;
  line-height: 1.4;
  white-space: nowrap;
}
.footer-email[data-footer] {
  color: #727681;
  font-size: 16px;
  line-height: 1.5;
}
.footer-social[data-footer] {
  display: flex;
  align-items: center;
  gap: 22px;
  color: #1f2536;
  flex-shrink: 0;
}
.footer-social-icon[data-footer] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.footer-social-icon[data-footer] svg[data-footer] {
  display: block;
  width: auto;
  height: auto;
  overflow: visible;
}
@media (min-width: 1001px) and (hover: hover) and (pointer: fine) {
  .footer-contact[data-footer] a[data-footer]:hover {
    color: #a7abb2;
  }
  .footer-social[data-footer] a[data-footer]:hover {
    color: #4c5366;
  }
}
@media (min-width: 768px) {
  .footer-inner[data-footer] {
    padding-inline: 7.6389%;
  }
}
@media (max-width: 767px) {
  .footer-inner[data-footer] {
    align-items: flex-start;
    flex-direction: column;
    gap: 24px;
    padding-block: 32px;
  }
  .footer-contact[data-footer] {
    gap: 8px;
  }
  .footer-social[data-footer] {
    gap: 24px;
  }
  .footer-social-icon-x[data-footer] svg[data-footer] {
    width: 27px;
    height: 27.9px;
  }
  .footer-social-icon-tiktok[data-footer] svg[data-footer] {
    width: 24.3px;
    height: 27.9px;
  }
  .footer-social-icon-xiaohongshu[data-footer] svg[data-footer] {
    width: 57.6px;
    height: 27.9px;
  }
  li[data-footer] + li[data-footer]:before {
    margin-inline: 8px;
  }
}
@media (max-width: 600px) {
  .footer-inner[data-footer] {
    min-height: 0;
    padding-block: 24px;
  }
  li[data-footer] + li[data-footer]:before {
    margin-inline: 5px;
  }
  nav[data-footer] a[data-footer],
  .footer-placeholder[data-footer] {
    font-size: 16px;
  }
}
@media (max-width: 480px) {
  .footer-contact[data-footer] {
    width: 100%;
    gap: 4px;
  }
  nav[data-footer] {
    width: 100%;
  }
  ul[data-footer] {
    display: grid;
    grid-template-columns: repeat(3, max-content);
    justify-content: flex-start;
    gap: 0;
  }
  li[data-footer] + li[data-footer]:before {
    margin-inline: clamp(3px, calc(5vw - 13px), 8px);
  }
  li[data-footer]:last-child {
    grid-column: 1 / -1;
  }
  li[data-footer]:last-child:before {
    display: none;
  }
  nav[data-footer] a[data-footer],
  .footer-placeholder[data-footer] {
    min-height: 32px;
    font-size: clamp(14px, calc(5vw - 2px), 16px);
  }
}