:root {
  --ink: #0b1914;
  --ink-soft: #40534b;
  --green: #20c86a;
  --green-dark: #0d9e52;
  --green-deep: #07472b;
  --mint: #dff9ea;
  --mint-light: #f0fbf4;
  --cream: #f6f6ee;
  --white: #ffffff;
  --line: rgba(11, 25, 20, 0.1);
  --shadow: 0 28px 80px rgba(18, 92, 55, 0.13);
  --radius-lg: 32px;
  --radius-md: 24px;
  --shell: min(1180px, calc(100vw - 48px));
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  border-radius: 10px;
  color: var(--white);
  background: var(--ink);
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  width: 100%;
  padding: 16px 0;
  transition: padding 240ms ease, background 240ms ease, box-shadow 240ms ease;
}

.site-header.is-scrolled {
  padding: 9px 0;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 1px 0 var(--line);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 210px;
}

.brand img {
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: 13px;
  box-shadow: 0 8px 20px rgba(18, 126, 72, 0.16);
}

.brand-copy {
  display: grid;
  line-height: 1.1;
}

.brand-copy strong {
  font-size: 15px;
  letter-spacing: 0.01em;
}

.brand-copy small {
  margin-top: 5px;
  color: #6a7a73;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 650;
}

.site-nav a {
  padding: 12px 15px;
  border-radius: 999px;
  transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.site-nav a:hover {
  color: var(--green-dark);
  background: rgba(32, 200, 106, 0.08);
}

.site-nav .nav-download {
  margin-left: 8px;
  padding-inline: 20px;
  color: var(--white);
  background: var(--ink);
}

.site-nav .nav-download:hover {
  color: var(--white);
  background: var(--green-dark);
  transform: translateY(-1px);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 14px;
  background: var(--ink);
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  border-radius: 2px;
  background: var(--white);
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-button[aria-expanded="true"] span:first-child {
  transform: translateY(6px) rotate(45deg);
}

.menu-button[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-button[aria-expanded="true"] span:last-child {
  transform: translateY(-6px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: 800px;
  padding: 124px 0 44px;
  background:
    radial-gradient(circle at 8% 15%, rgba(32, 200, 106, 0.11), transparent 26%),
    linear-gradient(180deg, #f5fff9 0%, #ffffff 74%);
  overflow: hidden;
}

.hero::before {
  position: absolute;
  top: 0;
  right: -10vw;
  width: 53vw;
  height: 50vw;
  max-height: 660px;
  border-radius: 0 0 0 52%;
  background: linear-gradient(145deg, #dff8e9, #baf2d2);
  content: "";
}

.hero-glow {
  position: absolute;
  border: 1px solid rgba(32, 200, 106, 0.13);
  border-radius: 50%;
  pointer-events: none;
}

.hero-glow-one {
  top: 90px;
  right: 2%;
  width: 360px;
  height: 360px;
}

.hero-glow-two {
  top: 160px;
  right: 9%;
  width: 220px;
  height: 220px;
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(360px, 0.97fr);
  align-items: center;
  min-height: 560px;
}

.hero-copy {
  max-width: 660px;
  padding-bottom: 0;
}

.eyebrow,
.kicker {
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px 9px 10px;
  border: 1px solid rgba(32, 200, 106, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 30px rgba(32, 200, 106, 0.08);
}

.eyebrow i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 5px rgba(32, 200, 106, 0.13);
}

.hero h1 {
  max-width: 700px;
  margin: 28px 0 24px;
  font-size: clamp(48px, 5.4vw, 75px);
  font-weight: 850;
  line-height: 1.06;
  letter-spacing: -0.055em;
}

.hero h1 em {
  position: relative;
  color: var(--green-dark);
  font-style: normal;
  white-space: nowrap;
}

.hero h1 em::after {
  position: absolute;
  z-index: -1;
  bottom: 1px;
  left: -2px;
  width: calc(100% + 4px);
  height: 14px;
  border-radius: 5px;
  background: #bff3d4;
  content: "";
  transform: rotate(-1deg);
}

.hero-lead {
  max-width: 590px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 25px;
  border: 1px solid transparent;
  border-radius: 17px;
  font-size: 15px;
  font-weight: 750;
  transition: transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  gap: 18px;
  color: var(--white);
  background: var(--ink);
  box-shadow: 0 16px 34px rgba(11, 25, 20, 0.18);
}

.button-primary:hover {
  background: var(--green-dark);
  box-shadow: 0 18px 38px rgba(13, 158, 82, 0.24);
}

.button-primary b {
  display: grid;
  width: 25px;
  height: 25px;
  place-items: center;
  border-radius: 50%;
  color: var(--ink);
  background: var(--white);
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.74);
}

.button-secondary:hover {
  background: var(--white);
  box-shadow: 0 14px 34px rgba(28, 82, 55, 0.1);
}

.hero-notes {
  display: flex;
  flex-wrap: wrap;
  gap: 17px;
  margin-top: 26px;
  color: #63736c;
  font-size: 12px;
  font-weight: 650;
}

.hero-notes span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-notes i {
  display: grid;
  width: 17px;
  height: 17px;
  place-items: center;
  border-radius: 50%;
  color: var(--green-dark);
  background: var(--mint);
  font-size: 10px;
  font-style: normal;
}

.hero-visual {
  position: relative;
  display: grid;
  align-self: stretch;
  min-height: 570px;
  place-items: center;
  isolation: isolate;
}

.hero-orbit {
  position: absolute;
  z-index: -2;
  border-radius: 50%;
}

.orbit-one {
  width: 440px;
  height: 440px;
  border: 1px solid rgba(4, 97, 51, 0.13);
}

.orbit-two {
  width: 340px;
  height: 340px;
  background: rgba(255, 255, 255, 0.28);
}

.phone-frame {
  position: relative;
  z-index: 3;
  width: 270px;
  padding: 8px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 47px;
  background: #101714;
  box-shadow:
    0 45px 90px rgba(5, 73, 39, 0.25),
    0 10px 25px rgba(8, 40, 25, 0.18),
    inset 0 0 0 1px rgba(255, 255, 255, 0.12);
  transform: rotate(2.7deg);
}

.phone-frame::after {
  position: absolute;
  top: 68px;
  right: -4px;
  width: 4px;
  height: 64px;
  border-radius: 0 3px 3px 0;
  background: #25312c;
  content: "";
}

.phone-frame img {
  width: 100%;
  border-radius: 38px;
}

.phone-speaker {
  position: absolute;
  z-index: 2;
  top: 18px;
  left: 50%;
  width: 76px;
  height: 23px;
  border-radius: 999px;
  background: #050505;
  transform: translateX(-50%);
}

.float-card {
  position: absolute;
  z-index: 5;
  display: flex;
  border: 1px solid rgba(255, 255, 255, 0.62);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 20px 45px rgba(9, 80, 43, 0.16);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.streak-card {
  top: 92px;
  left: 2px;
  width: 135px;
  padding: 14px;
  border-radius: 20px;
  flex-direction: column;
}

.streak-card span {
  color: #728078;
  font-size: 11px;
}

.streak-card strong {
  margin-top: 7px;
  font-size: 22px;
}

.streak-card i {
  height: 7px;
  margin-top: 12px;
  border-radius: 99px;
  background: #dbe7df;
  overflow: hidden;
}

.streak-card i b {
  display: block;
  width: 50%;
  height: 100%;
  border-radius: inherit;
  background: var(--green);
}

.course-card {
  right: 0;
  bottom: 92px;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 19px;
}

.course-card .course-symbol {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 13px;
  color: var(--white);
  background: var(--green);
  font-size: 20px;
}

.course-card div {
  display: grid;
  min-width: 84px;
}

.course-card strong {
  font-size: 13px;
}

.course-card small {
  margin-top: 4px;
  color: #75847c;
  font-size: 10px;
}

.hero-stats {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  padding: 28px 38px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 48px rgba(7, 72, 38, 0.08);
  backdrop-filter: blur(16px);
}

.hero-stats div {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 10px;
}

.hero-stats strong {
  font-size: 24px;
  letter-spacing: -0.04em;
}

.hero-stats span {
  color: #687871;
  font-size: 12px;
}

.hero-stats > i {
  width: 1px;
  height: 28px;
  background: var(--line);
}

.section {
  padding: 132px 0;
}

.section-heading,
.screen-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 70px;
  margin-bottom: 55px;
}

.kicker {
  margin: 0 0 18px;
}

.section h2,
.download-section h2 {
  margin: 0;
  font-size: clamp(38px, 4vw, 58px);
  font-weight: 820;
  line-height: 1.13;
  letter-spacing: -0.045em;
}

.section-heading > p {
  max-width: 420px;
  margin: 0 0 5px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.9;
}

.features-section {
  background: var(--cream);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.feature-card {
  position: relative;
  min-height: 420px;
  padding: 38px;
  border: 1px solid rgba(11, 25, 20, 0.07);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.feature-card h3 {
  max-width: 380px;
  margin: 45px 0 12px;
  font-size: 29px;
  line-height: 1.2;
  letter-spacing: -0.035em;
}

.feature-card p {
  max-width: 380px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.feature-number {
  position: absolute;
  top: 30px;
  right: 30px;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 800;
  opacity: 0.45;
}

.feature-card-large {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: 0.92fr 1.08fr;
  min-height: 480px;
  padding: 0;
  background: var(--white);
}

.feature-card-large .feature-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 52px;
}

.feature-card-large h3 {
  margin-top: 0;
  font-size: 42px;
}

.feature-shot {
  position: relative;
  height: 480px;
  padding: 38px 60px 0;
  background:
    radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.7), transparent 25%),
    #c6f3d8;
  overflow: hidden;
}

.feature-shot::before,
.feature-shot::after {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  content: "";
}

.feature-shot::before {
  top: -100px;
  right: -70px;
  width: 330px;
  height: 330px;
}

.feature-shot::after {
  bottom: -80px;
  left: -30px;
  width: 230px;
  height: 230px;
}

.feature-shot img {
  position: relative;
  z-index: 1;
  width: 255px;
  margin: 0 auto;
  border: 7px solid #17231e;
  border-bottom: 0;
  border-radius: 40px 40px 0 0;
  box-shadow: 0 30px 55px rgba(15, 100, 57, 0.22);
}

.mini-progress {
  width: 250px;
  height: 8px;
  margin-top: 34px;
  border-radius: 99px;
  background: #e0ebe5;
  overflow: hidden;
}

.mini-progress i {
  display: block;
  width: 68%;
  height: 100%;
  border-radius: inherit;
  background: var(--green);
}

.feature-card-dark {
  color: var(--white);
  background: var(--ink);
}

.feature-card-dark p {
  color: rgba(255, 255, 255, 0.66);
}

.feature-card-mint {
  background: var(--mint);
}

.feature-card-soft {
  background: #fff;
}

.feature-icon {
  display: grid;
  width: 68px;
  height: 68px;
  place-items: center;
  border-radius: 22px;
}

.eye-icon {
  position: relative;
  border-radius: 70% 12%;
  background: var(--green);
  transform: rotate(45deg);
}

.eye-icon i {
  width: 26px;
  height: 26px;
  border: 7px solid var(--ink);
  border-radius: 50%;
  background: var(--white);
}

.game-icon {
  color: var(--white);
  background: var(--green-dark);
  font-size: 36px;
  font-weight: 350;
}

.device-icon {
  position: relative;
  border: 2px solid var(--ink);
  background: #f4f5ef;
}

.device-icon::before {
  position: absolute;
  right: -12px;
  bottom: -7px;
  width: 28px;
  height: 45px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--white);
  content: "";
}

.stripe-swatch {
  position: absolute;
  right: -32px;
  bottom: -45px;
  width: 270px;
  height: 180px;
  border: 10px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  background: repeating-linear-gradient(120deg, var(--white) 0 15px, #050805 15px 30px);
  opacity: 0.92;
  transform: rotate(-7deg);
}

.game-chips {
  position: absolute;
  right: 32px;
  bottom: 32px;
  display: flex;
  gap: 8px;
}

.game-chips span {
  display: grid;
  width: 64px;
  height: 64px;
  place-items: center;
  border-radius: 17px;
  color: var(--green-dark);
  background: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  font-weight: 800;
}

.device-lines {
  position: absolute;
  right: 38px;
  bottom: 38px;
  display: flex;
  align-items: end;
  gap: 9px;
}

.device-lines i {
  width: 20px;
  border: 2px solid var(--ink);
  border-radius: 5px;
  background: var(--mint);
}

.device-lines i:nth-child(1) { height: 36px; }
.device-lines i:nth-child(2) { width: 55px; height: 72px; }
.device-lines i:nth-child(3) { width: 86px; height: 60px; }

.courses-section {
  background: var(--white);
}

.courses-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
  gap: 110px;
}

.courses-media {
  position: relative;
  min-height: 600px;
  padding: 36px 0 0;
}

.courses-media::before {
  position: absolute;
  inset: 0 40px 0 0;
  border-radius: 46% 46% 30% 30%;
  background:
    radial-gradient(circle at 75% 20%, rgba(255, 255, 255, 0.45) 0 40px, transparent 41px),
    linear-gradient(150deg, #d4f7e2, #b4efcf);
  content: "";
}

.preview-poster {
  position: relative;
  z-index: 2;
  width: 260px;
  height: 560px;
  margin: 0 auto;
  border: 7px solid var(--ink);
  border-bottom: 0;
  border-radius: 42px 42px 0 0;
  box-shadow: 0 34px 60px rgba(11, 92, 51, 0.19);
  overflow: hidden;
}

.preview-poster img {
  width: 100%;
}

.media-badge {
  position: absolute;
  z-index: 4;
  right: 2px;
  bottom: 50px;
  display: grid;
  padding: 18px 24px;
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 42px rgba(11, 78, 44, 0.14);
  backdrop-filter: blur(12px);
}

.media-badge strong {
  font-size: 15px;
}

.media-badge span {
  margin-top: 4px;
  color: #718179;
  font-size: 11px;
}

.courses-copy h2 {
  margin-bottom: 25px;
}

.section-intro,
.guide-copy > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.9;
}

.course-list {
  margin-top: 48px;
  border-top: 1px solid var(--line);
}

.course-list article {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 20px;
  padding: 27px 0;
  border-bottom: 1px solid var(--line);
}

.course-index {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 14px;
  color: var(--green-dark);
  background: var(--mint);
  font-size: 13px;
  font-weight: 850;
}

.course-list h3 {
  margin: 0 0 7px;
  font-size: 20px;
}

.course-list p {
  margin: 0;
  color: #64756d;
  font-size: 14px;
  line-height: 1.7;
}

.screen-section {
  padding-bottom: 120px;
  color: var(--white);
  background: var(--ink);
  overflow: hidden;
}

.screen-section .kicker {
  color: #58e392;
}

.screen-heading {
  margin-bottom: 50px;
}

.slider-buttons {
  display: flex;
  gap: 10px;
}

.slider-buttons button {
  width: 52px;
  height: 52px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: var(--white);
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
  transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.slider-buttons button:hover {
  color: var(--ink);
  background: var(--green);
  transform: scale(1.05);
}

.screen-track-wrap {
  width: 100%;
}

.screen-track {
  display: flex;
  gap: 18px;
  padding: 0 max(24px, calc((100vw - 1180px) / 2)) 20px;
  overflow-x: auto;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

.screen-track::-webkit-scrollbar {
  display: none;
}

.screen-card {
  flex: 0 0 220px;
  margin: 0;
  scroll-snap-align: start;
}

.screen-card img {
  width: 220px;
  height: 476px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 25px;
  object-fit: cover;
  box-shadow: 0 24px 52px rgba(0, 0, 0, 0.27);
}

.screen-card figcaption {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 12px;
  margin-top: 20px;
}

.screen-card figcaption span {
  grid-row: 1 / 3;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  color: #77e9a6;
  font-size: 10px;
  font-weight: 800;
}

.screen-card figcaption strong {
  font-size: 15px;
}

.screen-card figcaption small {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.52);
  font-size: 11px;
}

.guide-section {
  background: #f3fbf6;
}

.guide-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 100px;
}

.guide-copy {
  position: sticky;
  top: 140px;
  align-self: start;
}

.guide-copy h2 {
  margin-bottom: 25px;
}

.guide-note {
  display: flex;
  align-items: flex-start;
  gap: 13px;
  margin-top: 34px;
  padding: 18px;
  border: 1px solid rgba(13, 158, 82, 0.16);
  border-radius: 17px;
  color: #52665c;
  background: rgba(255, 255, 255, 0.7);
  font-size: 13px;
  line-height: 1.7;
}

.guide-note i {
  flex: 0 0 22px;
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--green-dark);
  font-size: 12px;
  font-style: normal;
  font-weight: 800;
}

.guide-steps {
  display: grid;
  gap: 16px;
}

.guide-steps article {
  display: grid;
  grid-template-columns: 78px 1fr;
  gap: 28px;
  min-height: 180px;
  padding: 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: 0 14px 32px rgba(23, 100, 61, 0.05);
}

.guide-steps article > span {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border-radius: 19px;
  color: var(--green-dark);
  background: var(--mint);
  font-size: 13px;
  font-weight: 850;
}

.guide-steps h3 {
  margin: 4px 0 10px;
  font-size: 23px;
}

.guide-steps p {
  margin: 0;
  color: #617269;
  font-size: 14px;
  line-height: 1.8;
}

.download-section {
  padding: 80px 0;
  background: var(--white);
}

.download-shell {
  position: relative;
  padding: 72px;
  border-radius: 42px;
  color: var(--white);
  background:
    radial-gradient(circle at 12% 5%, rgba(62, 227, 136, 0.2), transparent 24%),
    var(--ink);
  overflow: hidden;
}

.download-shell::after {
  position: absolute;
  right: -120px;
  bottom: -190px;
  width: 460px;
  height: 460px;
  border: 1px solid rgba(77, 233, 143, 0.16);
  border-radius: 50%;
  box-shadow:
    0 0 0 70px rgba(77, 233, 143, 0.035),
    0 0 0 140px rgba(77, 233, 143, 0.025);
  content: "";
}

.download-pattern {
  position: absolute;
  top: -50px;
  right: 9%;
  width: 150px;
  height: 260px;
  background: repeating-linear-gradient(135deg, rgba(255,255,255,.04) 0 9px, transparent 9px 18px);
  transform: rotate(18deg);
}

.download-copy {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 28px;
  max-width: 690px;
}

.download-copy img {
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
}

.download-copy .kicker {
  color: #5ee696;
}

.download-copy > div > p:last-child {
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 15px;
}

.platform-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 52px;
}

.platform-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  min-height: 92px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.065);
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

.platform-card:hover {
  border-color: rgba(95, 231, 153, 0.48);
  background: rgba(255, 255, 255, 0.11);
  transform: translateY(-3px);
}

.platform-mark {
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  border-radius: 15px;
  color: var(--ink);
  background: var(--white);
  overflow: hidden;
}

.platform-mark img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.android-mark {
  background: #f6faf8;
}

.appstore-mark {
  background: linear-gradient(145deg, #1db6ff, #0876e8);
}

.appgallery-mark {
  background: #d91c24;
}

.platform-card > span:nth-child(2) {
  display: grid;
}

.platform-card small {
  color: rgba(255, 255, 255, 0.5);
  font-size: 10px;
}

.platform-card strong {
  margin-top: 5px;
  font-size: 13px;
}

.platform-card b {
  color: #65e79c;
  font-size: 17px;
}

.download-disclaimer {
  position: relative;
  z-index: 2;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.38);
  font-size: 10px;
  text-align: right;
}

.site-footer {
  padding: 45px 0 28px;
  border-top: 1px solid var(--line);
  background: var(--white);
}

.footer-main,
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-brand img {
  border-radius: 16px;
}

.footer-brand div {
  display: grid;
}

.footer-brand strong {
  font-size: 15px;
}

.footer-brand span {
  margin-top: 5px;
  color: #7a8982;
  font-size: 10px;
}

.footer-main nav {
  display: flex;
  gap: 28px;
  color: #516159;
  font-size: 12px;
  font-weight: 650;
}

.footer-main nav a:hover {
  color: var(--green-dark);
}

.footer-bottom {
  margin-top: 36px;
  padding-top: 23px;
  border-top: 1px solid var(--line);
  color: #8a9791;
  font-size: 10px;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
}

.footer-legal a {
  transition: color 180ms ease;
}

.footer-legal a:hover {
  color: var(--green-dark);
}

.trademark-notice {
  margin-top: 16px;
  margin-bottom: 0;
  color: #a0aaa5;
  font-size: 9px;
  line-height: 1.7;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 680ms ease, transform 680ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.reveal-delay-1 { transition-delay: 90ms; }
.reveal-delay-2 { transition-delay: 180ms; }

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid rgba(32, 200, 106, 0.55);
  outline-offset: 4px;
}

@media (max-width: 1080px) {
  .site-nav {
    gap: 0;
  }

  .site-nav a {
    padding-inline: 11px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) 400px;
  }

  .hero h1 {
    font-size: 56px;
  }

  .phone-frame {
    width: 258px;
  }

  .streak-card {
    left: -3px;
  }

  .course-card {
    right: -10px;
  }

  .courses-grid {
    gap: 65px;
  }

  .platform-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  :root {
    --shell: min(100% - 32px, 680px);
  }

  html {
    scroll-padding-top: 78px;
  }

  .site-header {
    padding: 10px 0;
    background: rgba(255, 255, 255, 0.88);
    border-bottom: 1px solid rgba(11, 25, 20, 0.06);
    backdrop-filter: blur(16px);
  }

  .brand {
    min-width: 0;
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .menu-button {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: 61px 0 auto;
    display: grid;
    gap: 2px;
    padding: 18px 16px 24px;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 25px 45px rgba(10, 47, 29, 0.12);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 180ms ease, visibility 180ms ease, transform 180ms ease;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .site-nav a {
    width: 100%;
    padding: 15px;
    text-align: center;
  }

  .site-nav .nav-download {
    margin: 5px 0 0;
  }

  .hero {
    min-height: auto;
    padding: 110px 0 44px;
  }

  .hero::before {
    top: 470px;
    right: -30vw;
    width: 150vw;
    height: 120vw;
    max-height: 620px;
    border-radius: 45%;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .hero-copy {
    max-width: 650px;
    padding: 0;
  }

  .hero h1 {
    max-width: 630px;
    font-size: clamp(43px, 10.5vw, 62px);
  }

  .hero-visual {
    min-height: 590px;
    margin-top: 15px;
  }

  .phone-frame {
    width: 248px;
  }

  .streak-card {
    left: 4%;
  }

  .course-card {
    right: 3%;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    padding: 0;
    overflow: hidden;
  }

  .hero-stats div {
    min-height: 104px;
    padding: 20px;
    border: 1px solid rgba(11, 25, 20, 0.05);
  }

  .hero-stats > i {
    display: none;
  }

  .section {
    padding: 94px 0;
  }

  .section-heading,
  .screen-heading {
    align-items: start;
    gap: 32px;
  }

  .feature-card-large {
    grid-template-columns: 1fr;
  }

  .feature-card-large .feature-copy {
    padding: 48px;
  }

  .feature-shot {
    height: 420px;
  }

  .courses-grid,
  .guide-grid {
    grid-template-columns: 1fr;
    gap: 70px;
  }

  .courses-media {
    grid-row: 2;
    width: min(560px, 100%);
    margin: 0 auto;
  }

  .guide-copy {
    position: static;
  }

  .download-shell {
    padding: 52px 34px;
  }

  .footer-main {
    align-items: flex-start;
  }

  .footer-main nav {
    display: grid;
    grid-template-columns: repeat(2, auto);
  }
}

@media (max-width: 580px) {
  :root {
    --shell: calc(100vw - 32px);
    --radius-lg: 26px;
  }

  .brand-copy strong {
    font-size: 14px;
  }

  .hero {
    padding-top: 100px;
  }

  .eyebrow {
    font-size: 10px;
  }

  .hero h1 {
    margin-top: 22px;
    font-size: clamp(39px, 12vw, 52px);
    letter-spacing: -0.06em;
  }

  .hero h1 em {
    white-space: normal;
  }

  .hero-lead {
    font-size: 15px;
    line-height: 1.75;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .hero-notes {
    gap: 9px 14px;
  }

  .hero-visual {
    min-height: 510px;
  }

  .phone-frame {
    width: 220px;
    border-radius: 40px;
  }

  .phone-frame img {
    border-radius: 32px;
  }

  .phone-speaker {
    top: 15px;
    width: 64px;
    height: 20px;
  }

  .streak-card {
    top: 78px;
    left: -2px;
    width: 112px;
    padding: 12px;
  }

  .course-card {
    right: -5px;
    bottom: 76px;
    padding: 11px;
  }

  .course-card .course-symbol {
    width: 32px;
    height: 32px;
  }

  .hero-stats div {
    flex-direction: column;
    gap: 5px;
  }

  .hero-stats strong {
    font-size: 21px;
  }

  .section {
    padding: 78px 0;
  }

  .section h2,
  .download-section h2 {
    font-size: 36px;
  }

  .section-heading,
  .screen-heading {
    display: grid;
    margin-bottom: 35px;
  }

  .section-heading > p {
    font-size: 14px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: 390px;
    padding: 28px;
  }

  .feature-card h3 {
    margin-top: 38px;
    font-size: 25px;
  }

  .feature-card-large {
    min-height: 0;
    padding: 0;
  }

  .feature-card-large .feature-copy {
    padding: 38px 28px;
  }

  .feature-card-large h3 {
    margin-top: 0;
    font-size: 33px;
  }

  .feature-shot {
    height: 350px;
    padding: 30px 34px 0;
  }

  .feature-shot img {
    width: 200px;
  }

  .stripe-swatch {
    right: -90px;
  }

  .game-chips {
    right: 25px;
    bottom: 25px;
  }

  .game-chips span {
    width: 54px;
    height: 54px;
  }

  .device-lines i:nth-child(3) {
    width: 65px;
  }

  .courses-grid {
    gap: 52px;
  }

  .courses-media {
    min-height: 500px;
    padding-top: 30px;
  }

  .preview-poster {
    width: 210px;
    height: 455px;
    border-width: 6px;
    border-bottom-width: 0;
    border-radius: 35px 35px 0 0;
  }

  .media-badge {
    right: -5px;
    bottom: 30px;
    padding: 14px 17px;
  }

  .course-list {
    margin-top: 34px;
  }

  .course-list article {
    grid-template-columns: 44px 1fr;
    gap: 15px;
  }

  .screen-section {
    padding-bottom: 80px;
  }

  .screen-heading {
    grid-template-columns: 1fr auto;
    align-items: end;
  }

  .screen-heading > div:first-child {
    grid-column: 1 / -1;
  }

  .slider-buttons {
    grid-column: 2;
  }

  .screen-card {
    flex-basis: 180px;
  }

  .screen-card img {
    width: 180px;
    height: 390px;
    border-radius: 22px;
  }

  .guide-grid {
    gap: 45px;
  }

  .guide-steps article {
    grid-template-columns: 55px 1fr;
    gap: 16px;
    min-height: 0;
    padding: 27px 22px;
  }

  .guide-steps article > span {
    width: 50px;
    height: 50px;
  }

  .download-section {
    padding: 40px 0;
  }

  .download-shell {
    width: calc(100vw - 20px);
    padding: 42px 22px;
    border-radius: 30px;
  }

  .download-copy {
    grid-template-columns: 1fr;
  }

  .download-copy img {
    width: 72px;
    height: 72px;
    border-radius: 20px;
  }

  .platform-grid {
    margin-top: 38px;
  }

  .platform-card {
    min-height: 84px;
    padding: 15px;
  }

  .download-disclaimer {
    line-height: 1.6;
    text-align: left;
  }

  .footer-main,
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-main nav {
    width: 100%;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .footer-bottom {
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}