:root {
  color-scheme: light;
  --paper: #fbfcf8;
  --surface: #ffffff;
  --surface-soft: #f1f5ec;
  --ink: #102431;
  --muted: #6e7d84;
  --line: #dce5dc;
  --green: #54b83d;
  --green-dark: #2f7e28;
  --green-soft: #e5f6df;
  --blue: #4674f2;
  --blue-soft: #e9efff;
  --orange: #f29d46;
  --radius-sm: 18px;
  --radius-md: 28px;
  --radius-lg: 44px;
  --shadow: 0 24px 70px rgba(32, 60, 47, 0.12);
  --display: "Avenir Next", "HarmonyOS Sans SC", "MiSans", "PingFang SC", sans-serif;
  --body: "HarmonyOS Sans SC", "MiSans", "OPPO Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

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

button,
a {
  font: inherit;
}

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

button {
  color: inherit;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  padding: 16px 22px;
  pointer-events: none;
}

.nav-shell {
  width: min(1180px, 100%);
  min-height: 68px;
  margin: 0 auto;
  padding: 8px 10px 8px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid rgba(220, 229, 220, 0.78);
  border-radius: 24px;
  background: rgba(251, 252, 248, 0.82);
  box-shadow: 0 16px 46px rgba(25, 51, 39, 0.08);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  pointer-events: auto;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  position: relative;
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
  overflow: hidden;
  border-radius: 15px;
  background: var(--green);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

.brand-mark img {
  position: absolute;
  width: 72px;
  height: 72px;
  max-width: none;
  left: -12px;
  top: -2px;
  object-fit: cover;
}

.brand-name,
.footer-brand > span:last-child {
  font-family: var(--display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 12px 18px;
  border-radius: 14px;
  color: #3c5058;
  font-size: 14px;
  font-weight: 700;
  transition: color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.nav-links a:hover {
  color: var(--ink);
  background: var(--surface-soft);
}

.nav-links .nav-download {
  padding-inline: 22px;
  color: #fff;
  background: var(--ink);
}

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

.hero {
  position: relative;
  min-height: 820px;
  padding: 138px 28px 84px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  width: 630px;
  height: 630px;
  left: -280px;
  top: 150px;
  border: 1px solid rgba(84, 184, 61, 0.18);
  border-radius: 50%;
  box-shadow: 0 0 0 90px rgba(84, 184, 61, 0.035), 0 0 0 180px rgba(84, 184, 61, 0.02);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.46;
  background-image: linear-gradient(rgba(16, 36, 49, 0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(16, 36, 49, 0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, #000, transparent 88%);
}

.hero-grid {
  position: relative;
  z-index: 1;
  width: min(1160px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.88fr);
  align-items: center;
  gap: 72px;
}

.hero-copy {
  padding-bottom: 16px;
}

.eyebrow {
  margin: 0 0 28px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #5f7076;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.eyebrow span {
  width: 28px;
  height: 2px;
  background: var(--green);
}

.hero h1 {
  max-width: 650px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(64px, 7vw, 108px);
  font-weight: 900;
  letter-spacing: -0.075em;
  line-height: 0.96;
}

.hero h1 em {
  color: var(--green);
  font-style: normal;
}

.hero-tags {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.hero-tags span {
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
  color: #486069;
  font-size: 14px;
  font-weight: 700;
}

.hero-actions {
  margin-top: 42px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 56px;
  padding: 0 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  border-radius: 17px;
  font-size: 15px;
  font-weight: 800;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.button svg {
  width: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.button-primary {
  color: #fff;
  background: var(--ink);
  box-shadow: 0 16px 34px rgba(16, 36, 49, 0.18);
}

.button-primary:hover {
  transform: translateY(-2px);
  background: var(--green-dark);
  box-shadow: 0 20px 42px rgba(47, 126, 40, 0.2);
}

.button-quiet {
  border: 1px solid var(--line);
  background: #fff;
}

.button-quiet:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(30, 55, 44, 0.09);
}

.device-stage {
  position: relative;
  min-height: 650px;
  display: grid;
  place-items: center;
}

.device-stage::before {
  content: "";
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: linear-gradient(145deg, #e8f8e2 8%, #eef4ff 74%);
}

.orbit {
  position: absolute;
  border: 1px solid rgba(61, 93, 75, 0.15);
  border-radius: 50%;
}

.orbit-one {
  width: 580px;
  height: 580px;
}

.orbit-two {
  width: 450px;
  height: 450px;
  border-style: dashed;
  animation: orbit-spin 26s linear infinite;
}

.floating-note {
  position: absolute;
  z-index: 3;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 45px rgba(31, 63, 46, 0.12);
  backdrop-filter: blur(14px);
  font-family: var(--display);
  font-weight: 900;
}

.note-one {
  width: 114px;
  height: 46px;
  right: -6px;
  top: 144px;
  border-radius: 16px;
  color: var(--green-dark);
  font-size: 12px;
  letter-spacing: 0.18em;
  transform: rotate(7deg);
}

.note-two {
  width: 74px;
  height: 74px;
  left: 8px;
  bottom: 146px;
  border-radius: 24px;
  color: var(--blue);
  font-size: 28px;
  transform: rotate(-8deg);
}

.phone {
  position: relative;
  z-index: 2;
  width: 326px;
  height: 652px;
  padding: 9px;
  border: 1px solid #cdd8d0;
  border-radius: 48px;
  background: #152a34;
  box-shadow: 0 42px 90px rgba(25, 52, 40, 0.25), inset 0 0 0 2px rgba(255, 255, 255, 0.08);
  transform: rotate(3deg);
  transition: transform 480ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.device-stage:hover .phone {
  transform: rotate(0deg) translateY(-6px);
}

.phone-speaker {
  position: absolute;
  z-index: 4;
  top: 16px;
  left: 50%;
  width: 84px;
  height: 23px;
  border-radius: 999px;
  background: #152a34;
  transform: translateX(-50%);
}

.phone-screen {
  position: relative;
  height: 100%;
  overflow: hidden;
  border-radius: 40px;
  background: #f7f9fb;
}

.status-bar {
  height: 34px;
  padding: 10px 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #354853;
  font-size: 10px;
  font-weight: 800;
}

.status-icons {
  display: flex;
  align-items: flex-end;
  gap: 2px;
}

.status-icons i {
  width: 3px;
  border-radius: 2px;
  background: #354853;
}

.status-icons i:nth-child(1) { height: 5px; }
.status-icons i:nth-child(2) { height: 7px; }
.status-icons i:nth-child(3) { height: 9px; }

.app-head {
  height: 54px;
  padding: 0 15px;
  display: grid;
  grid-template-columns: 34px 1fr 34px;
  align-items: center;
}

.app-head strong {
  text-align: center;
  font-size: 14px;
  letter-spacing: 0.08em;
}

.app-head button,
.media-play,
.mini-player button {
  border: 0;
  background: transparent;
  cursor: pointer;
}

.app-head button {
  width: 34px;
  height: 34px;
  padding: 7px;
}

.app-head svg {
  width: 100%;
  fill: none;
  stroke: #425762;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.media-card {
  position: relative;
  height: 162px;
  margin: 0 14px;
  padding: 20px;
  overflow: hidden;
  border-radius: 24px;
  color: #fff;
  background: linear-gradient(135deg, #2d5ee8 0%, #497cf2 50%, #62bd75 145%);
}

.media-card::after {
  content: "";
  position: absolute;
  width: 200px;
  height: 200px;
  right: -112px;
  top: -90px;
  border: 28px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
}

.media-label {
  display: block;
  opacity: 0.68;
  font-family: var(--display);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.17em;
}

.media-card strong {
  position: relative;
  z-index: 1;
  margin-top: 9px;
  display: block;
  font-family: var(--display);
  font-size: 23px;
  line-height: 1.07;
  letter-spacing: -0.04em;
}

.media-play {
  position: absolute;
  z-index: 2;
  right: 19px;
  bottom: 18px;
  width: 43px;
  height: 43px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 10px 26px rgba(11, 42, 114, 0.3);
}

.media-play svg {
  width: 22px;
  fill: var(--blue);
}

.media-wave {
  position: absolute;
  left: 20px;
  bottom: 21px;
  height: 28px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.media-wave i {
  width: 3px;
  height: var(--wave, 10px);
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.64);
}

.media-wave i:nth-child(2) { --wave: 18px; }
.media-wave i:nth-child(3) { --wave: 25px; }
.media-wave i:nth-child(4) { --wave: 14px; }
.media-wave i:nth-child(5) { --wave: 22px; }
.media-wave i:nth-child(6) { --wave: 11px; }
.media-wave i:nth-child(7) { --wave: 19px; }

.preview-tabs {
  margin: 16px 14px 12px;
  padding: 4px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-radius: 14px;
  background: #eaf0f4;
}

.preview-tabs button {
  height: 34px;
  border: 0;
  border-radius: 11px;
  color: #71818b;
  background: transparent;
  font-size: 11px;
  font-weight: 800;
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.preview-tabs button.is-active {
  color: var(--ink);
  background: #fff;
  box-shadow: 0 6px 14px rgba(41, 66, 53, 0.08);
}

.preview-panel {
  min-height: 229px;
  padding: 0 14px 70px;
}

.sentence {
  padding: 14px 12px;
  border-radius: 15px;
}

.sentence + .sentence {
  margin-top: 4px;
}

.sentence.is-current {
  background: #e8edf0;
}

.sentence p {
  margin: 0;
  color: #1f333e;
  font-family: var(--display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.35;
}

.sentence span {
  margin-top: 6px;
  display: block;
  color: #7b8992;
  font-size: 10px;
}

.score-card {
  height: 118px;
  padding: 15px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-radius: 19px;
  color: #fff;
  background: linear-gradient(135deg, #2c5eea, #6b8ff5);
}

.score-card > div:first-child b {
  display: block;
  font-family: var(--display);
  font-size: 42px;
  line-height: 0.9;
}

.score-card > div:first-child span {
  margin-top: 9px;
  display: block;
  opacity: 0.72;
  font-size: 9px;
}

.score-rings {
  position: relative;
  width: 72px;
  height: 72px;
}

.score-rings i {
  position: absolute;
  inset: var(--ring, 0);
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: 50%;
}

.score-rings i:nth-child(2) { --ring: 10px; }
.score-rings i:nth-child(3) { --ring: 20px; background: rgba(255,255,255,.85); }

.voice-wave {
  height: 65px;
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.voice-wave i {
  width: 4px;
  height: var(--voice, 18px);
  border-radius: 4px;
  background: var(--green);
}

.voice-wave i:nth-child(2), .voice-wave i:nth-child(10) { --voice: 30px; }
.voice-wave i:nth-child(3), .voice-wave i:nth-child(9) { --voice: 44px; }
.voice-wave i:nth-child(4), .voice-wave i:nth-child(8) { --voice: 25px; }
.voice-wave i:nth-child(5), .voice-wave i:nth-child(7) { --voice: 53px; }
.voice-wave i:nth-child(6) { --voice: 36px; }

.intensive-line {
  padding: 18px 2px 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.word-card {
  min-height: 27px;
  padding: 5px 7px;
  border-radius: 7px;
  background: #fff;
  color: #2e424c;
  font-family: var(--display);
  font-size: 12px;
  font-weight: 700;
}

.word-card.is-covered {
  width: 42px;
  background: #ced7dc;
}

.word-card.is-covered.short {
  width: 22px;
}

.listen-progress {
  height: 4px;
  margin: 15px 2px 20px;
  overflow: hidden;
  border-radius: 8px;
  background: #dfe7eb;
}

.listen-progress i {
  width: 56%;
  height: 100%;
  display: block;
  border-radius: inherit;
  background: var(--green);
}

.intensive-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
}

.intensive-actions button {
  height: 38px;
  border: 1px solid #dce5e8;
  border-radius: 11px;
  background: #fff;
  color: #53666f;
  font-size: 10px;
  font-weight: 700;
}

.mini-player {
  position: absolute;
  inset: auto 0 0;
  height: 72px;
  padding: 0 18px;
  display: grid;
  grid-template-columns: auto 1fr 40px;
  align-items: center;
  gap: 12px;
  border-top: 1px solid #e2e8ec;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
}

.mini-player > span {
  color: #839098;
  font-size: 9px;
  font-weight: 700;
}

.player-track {
  height: 4px;
  overflow: hidden;
  border-radius: 9px;
  background: #e3e9ed;
}

.player-track i {
  width: 38%;
  height: 100%;
  display: block;
  background: var(--green);
}

.mini-player button {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--green);
}

.mini-player svg {
  width: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}

.features {
  padding: 116px 28px 130px;
  background: var(--ink);
  color: #fff;
}

.section-shell,
.download-shell,
.footer-shell {
  width: min(1160px, 100%);
  margin: 0 auto;
}

.section-head {
  margin-bottom: 54px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}

.section-head > span,
.download-copy > span {
  color: #8fa1a7;
  font-family: var(--display);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.section-head h2,
.download-copy h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(42px, 6vw, 76px);
  font-weight: 900;
  letter-spacing: -0.06em;
  line-height: 1;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  min-height: 380px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: var(--radius-md);
  color: var(--ink);
  background: #eef4ed;
  transition: transform 260ms ease, border-color 260ms ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.3);
}

.feature-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.feature-top span {
  font-family: var(--display);
  font-size: 12px;
  font-weight: 800;
}

.feature-top h3 {
  margin: 0;
  font-size: 21px;
  letter-spacing: -0.03em;
}

.feature-visual {
  flex: 1;
  margin-top: 30px;
}

.feature-listen { background: #dff4d7; }
.feature-score { background: #dfe7ff; }
.feature-paper { background: #f5eddf; }
.feature-word { background: #f7e6d5; }

.listen-visual {
  position: relative;
  display: grid;
  place-items: center;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.52);
}

.visual-wave {
  height: 126px;
  display: flex;
  align-items: center;
  gap: 11px;
}

.visual-wave i {
  width: 10px;
  height: var(--h, 44px);
  border-radius: 9px;
  background: var(--green-dark);
}

.visual-wave i:nth-child(2), .visual-wave i:nth-child(8) { --h: 78px; }
.visual-wave i:nth-child(3), .visual-wave i:nth-child(7) { --h: 118px; }
.visual-wave i:nth-child(4), .visual-wave i:nth-child(6) { --h: 66px; }
.visual-wave i:nth-child(5) { --h: 148px; }

.visual-line {
  position: absolute;
  inset: auto 28px 25px;
  height: 5px;
  border-radius: 9px;
  background: rgba(47, 126, 40, 0.15);
}

.visual-line span {
  width: 64%;
  height: 100%;
  display: block;
  border-radius: inherit;
  background: var(--green-dark);
}

.score-visual {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  align-content: center;
  gap: 22px 30px;
}

.score-visual strong {
  grid-row: 1 / 3;
  align-self: center;
  color: var(--blue);
  font-family: var(--display);
  font-size: clamp(100px, 13vw, 160px);
  letter-spacing: -0.09em;
  line-height: 0.8;
}

.score-visual div {
  display: grid;
  gap: 9px;
  color: #586772;
  font-size: 12px;
  font-weight: 700;
}

.score-visual div i {
  position: relative;
  height: 8px;
  overflow: hidden;
  border-radius: 10px;
  background: rgba(70, 116, 242, 0.13);
}

.score-visual div i::after {
  content: "";
  width: var(--score);
  height: 100%;
  display: block;
  border-radius: inherit;
  background: var(--blue);
}

.paper-visual {
  padding: 30px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.58);
}

.paper-column {
  padding: 20px;
  border-left: 3px solid var(--orange);
  background: rgba(255, 255, 255, 0.62);
}

.paper-column i {
  width: var(--w, 100%);
  height: 7px;
  margin-bottom: 18px;
  display: block;
  border-radius: 5px;
  background: #a79681;
}

.paper-column i:nth-child(2) { --w: 78%; }
.paper-column i:nth-child(3) { --w: 92%; }
.paper-column i:nth-child(4) { --w: 60%; }

.word-visual {
  padding: 26px 6px 10px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.word-visual .phonetic {
  color: #a36b38;
  font-family: var(--display);
  font-size: 20px;
}

.word-visual strong {
  margin: 3px 0 14px;
  font-family: var(--display);
  font-size: clamp(82px, 12vw, 146px);
  font-weight: 900;
  letter-spacing: -0.08em;
  line-height: 0.92;
}

.word-visual .meaning {
  color: #6c5a49;
  font-size: 16px;
  font-weight: 700;
}

.manifesto {
  display: flex;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--green);
  color: #fff;
}

.manifesto-track {
  min-width: max-content;
  padding: 23px 0;
  display: flex;
  align-items: center;
  gap: 28px;
  animation: marquee 26s linear infinite;
}

.manifesto-track span {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.manifesto-track i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.48);
}

.download {
  padding: 124px 28px 130px;
}

.download-shell {
  padding: 60px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow);
}

.download-copy {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
}

.download-copy h2 {
  color: var(--ink);
}

.store-grid {
  margin-top: 52px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.store-button {
  position: relative;
  min-height: 96px;
  padding: 18px 18px;
  display: grid;
  grid-template-columns: 46px 1fr;
  align-items: center;
  gap: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 21px;
  background: var(--surface-soft);
  transition: color 220ms ease, background-color 220ms ease, border-color 220ms ease, transform 220ms ease;
}

.store-button:hover,
.store-button.is-ready:hover {
  color: #fff;
  border-color: var(--ink);
  background: var(--ink);
  transform: translateY(-4px);
}

.store-button svg {
  width: 40px;
  height: 40px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.store-button[data-store="ios"] svg {
  fill: currentColor;
  stroke: none;
}

.store-button > span {
  min-width: 0;
}

.store-button small,
.store-button strong {
  display: block;
  font-family: var(--display);
}

.store-button small {
  margin-bottom: 2px;
  color: var(--muted);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.11em;
}

.store-button:hover small {
  color: rgba(255, 255, 255, 0.62);
}

.store-button strong {
  font-size: 18px;
  letter-spacing: -0.02em;
}

.store-button em {
  position: absolute;
  top: 9px;
  right: 10px;
  padding: 4px 7px;
  border-radius: 999px;
  color: #6d7f76;
  background: rgba(255, 255, 255, 0.72);
  font-size: 9px;
  font-style: normal;
  font-weight: 700;
}

.store-button.is-ready em {
  display: none;
}

.site-footer {
  padding: 0 28px 36px;
}

.footer-shell {
  min-height: 94px;
  padding: 22px 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  border-top: 1px solid var(--line);
}

.footer-brand .brand-mark {
  width: 42px;
  height: 42px;
  flex-basis: 42px;
  border-radius: 13px;
}

.footer-brand .brand-mark img {
  width: 64px;
  height: 64px;
  left: -11px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.footer-links a {
  color: #5d7078;
  font-size: 12px;
  font-weight: 700;
}

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

.footer-shell > p {
  margin: 0;
  color: #819097;
  text-align: right;
  font-size: 11px;
}

.toast {
  position: fixed;
  z-index: 80;
  left: 50%;
  bottom: 26px;
  padding: 12px 18px;
  border-radius: 14px;
  color: #fff;
  background: var(--ink);
  box-shadow: 0 14px 34px rgba(16, 36, 49, 0.24);
  opacity: 0;
  transform: translate(-50%, 16px);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 650ms ease, transform 650ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

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

:focus-visible {
  outline: 3px solid rgba(70, 116, 242, 0.48);
  outline-offset: 3px;
}

@keyframes orbit-spin {
  to { transform: rotate(360deg); }
}

@keyframes marquee {
  to { transform: translateX(-100%); }
}

@media (max-width: 980px) {
  .hero {
    padding-top: 125px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-copy {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
  }

  .eyebrow,
  .hero-tags,
  .hero-actions {
    justify-content: center;
  }

  .device-stage {
    min-height: 680px;
  }

  .feature-card {
    min-height: 350px;
  }

  .score-visual strong {
    font-size: 105px;
  }

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

  .store-button {
    min-height: 86px;
  }

  .footer-shell {
    grid-template-columns: 1fr 1fr;
  }

  .footer-links {
    justify-content: flex-end;
  }

  .footer-shell > p {
    grid-column: 1 / -1;
    text-align: left;
  }
}

@media (max-width: 680px) {
  .site-header {
    padding: 10px 12px;
  }

  .nav-shell {
    min-height: 60px;
    border-radius: 19px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
    flex-basis: 42px;
    border-radius: 13px;
  }

  .brand-mark img {
    width: 64px;
    height: 64px;
    left: -11px;
  }

  .brand-name {
    font-size: 16px;
  }

  .nav-links a:not(.nav-download) {
    display: none;
  }

  .nav-links .nav-download {
    padding: 10px 18px;
  }

  .hero {
    min-height: auto;
    padding: 112px 16px 62px;
  }

  .eyebrow {
    margin-bottom: 20px;
    font-size: 11px;
  }

  .hero h1 {
    font-size: clamp(54px, 17vw, 74px);
    letter-spacing: -0.08em;
  }

  .hero-tags {
    margin-top: 25px;
  }

  .hero-actions {
    margin-top: 30px;
  }

  .button {
    min-height: 52px;
  }

  .device-stage {
    min-height: 610px;
    margin-inline: -12px;
    transform: scale(0.91);
    transform-origin: center top;
  }

  .device-stage::before {
    width: 420px;
    height: 420px;
  }

  .orbit-one {
    width: 470px;
    height: 470px;
  }

  .orbit-two {
    width: 370px;
    height: 370px;
  }

  .note-one {
    right: 4px;
  }

  .note-two {
    left: 2px;
  }

  .features {
    padding: 84px 16px 92px;
  }

  .section-head {
    margin-bottom: 35px;
    display: block;
  }

  .section-head h2,
  .download-copy h2 {
    margin-top: 12px;
    font-size: 44px;
  }

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

  .feature-card {
    min-height: 320px;
    padding: 22px;
  }

  .score-visual strong {
    font-size: 104px;
  }

  .paper-visual {
    gap: 14px;
    padding: 20px;
  }

  .paper-column {
    padding: 14px;
  }

  .word-visual strong {
    font-size: 92px;
  }

  .download {
    padding: 78px 14px 84px;
  }

  .download-shell {
    padding: 34px 20px 22px;
    border-radius: 30px;
  }

  .download-copy {
    display: block;
  }

  .store-grid {
    margin-top: 34px;
  }

  .site-footer {
    padding: 0 18px 30px;
  }

  .footer-shell {
    grid-template-columns: 1fr;
  }

  .footer-links {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .footer-shell > p {
    font-size: 10px;
  }
}

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

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

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