:root {
  --ink: #10211b;
  --ink-soft: #4d5d56;
  --paper: #f7f8f3;
  --paper-deep: #eef2ea;
  --white: #ffffff;
  --mint: #18d39a;
  --mint-bright: #27e4af;
  --mint-deep: #08ae7d;
  --lime: #dfff79;
  --sky: #b9dfff;
  --line: rgba(16, 33, 27, 0.12);
  --shadow: 0 30px 80px rgba(17, 74, 57, 0.12);
  --radius-xl: 42px;
  --radius-lg: 30px;
  --radius-md: 22px;
  --shell: min(1180px, calc(100% - 48px));
  --header-height: 82px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  -webkit-font-smoothing: antialiased;
}

body.modal-open {
  overflow: hidden;
}

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

button {
  font: inherit;
}

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

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

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 999;
  padding: 12px 18px;
  color: var(--white);
  background: var(--ink);
  border-radius: 10px;
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

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

.page-shell {
  width: var(--shell);
  margin: 0 auto;
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  width: 100%;
  border-bottom: 1px solid transparent;
  transition: background 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.site-header.is-scrolled,
.site-header.menu-open {
  background: rgba(247, 248, 243, 0.9);
  border-bottom-color: rgba(16, 33, 27, 0.08);
  box-shadow: 0 8px 30px rgba(22, 62, 49, 0.05);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.nav-shell {
  display: flex;
  align-items: center;
  width: var(--shell);
  height: var(--header-height);
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
  font-size: 17px;
  font-weight: 750;
  letter-spacing: -0.02em;
}

.brand img,
.footer-brand img,
.modal-brand img {
  border: 1px solid rgba(16, 33, 27, 0.08);
  border-radius: 13px;
  box-shadow: 0 10px 26px rgba(4, 174, 125, 0.18);
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 36px;
  margin-right: 34px;
}

.desktop-nav a,
.footer-links a {
  position: relative;
  color: #40504a;
  font-size: 14px;
  font-weight: 560;
  transition: color 180ms ease;
}

.desktop-nav a::after {
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--mint-deep);
  border-radius: 99px;
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.desktop-nav a:hover,
.footer-links a:hover {
  color: var(--ink);
}

.desktop-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-download {
  padding: 12px 21px;
  color: var(--white);
  background: var(--ink);
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 650;
  transition: transform 180ms ease, background 180ms ease;
}

.nav-download:hover {
  background: var(--mint-deep);
  transform: translateY(-2px);
}

.menu-toggle,
.mobile-nav {
  display: none;
}

.hero {
  position: relative;
  overflow: hidden;
  padding-top: var(--header-height);
  background:
    linear-gradient(115deg, rgba(255, 255, 255, 0.5), transparent 45%),
    var(--paper);
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(410px, 0.82fr);
  gap: 76px;
  align-items: center;
  min-height: 800px;
  padding: 76px 0 66px;
}

.hero-copy {
  position: relative;
  z-index: 3;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px 8px 10px;
  color: #355048;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(17, 65, 50, 0.1);
  border-radius: 999px;
  box-shadow: 0 12px 38px rgba(21, 71, 56, 0.06);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.08em;
}

.eyebrow-dot {
  width: 9px;
  height: 9px;
  background: var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(24, 211, 154, 0.14);
}

.hero h1 {
  max-width: 670px;
  margin: 26px 0 24px;
  font-size: clamp(58px, 6.2vw, 88px);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -0.065em;
}

.hero h1 span {
  display: inline-block;
  color: var(--mint-deep);
  font-size: 0.82em;
}

.hero-lead {
  max-width: 570px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.85;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button svg,
.store-arrow,
.carousel-controls svg,
.menu-toggle svg,
.modal-close svg {
  width: 20px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.button-primary {
  color: var(--white);
  background: var(--ink);
  box-shadow: 0 14px 34px rgba(16, 33, 27, 0.18);
}

.button-primary:hover {
  background: #18382e;
  box-shadow: 0 18px 42px rgba(16, 33, 27, 0.22);
  transform: translateY(-3px);
}

.button-secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.78);
  border-color: rgba(16, 33, 27, 0.12);
}

.button-secondary svg {
  width: 17px;
}

.button-secondary:hover {
  background: var(--white);
  transform: translateY(-3px);
}

.platform-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  color: #748078;
  font-size: 12px;
}

.platform-pill {
  padding: 5px 9px;
  color: #506058;
  background: rgba(16, 33, 27, 0.05);
  border-radius: 7px;
  font-size: 11px;
  font-weight: 650;
}

.hero-visual {
  position: relative;
  height: 650px;
}

.phone-card {
  position: absolute;
  top: 0;
  left: 50%;
  overflow: hidden;
  width: 300px;
  height: auto;
  aspect-ratio: 739 / 1600;
  background: var(--mint);
  border: 8px solid rgba(255, 255, 255, 0.88);
  border-radius: 48px;
  box-shadow: 0 46px 100px rgba(14, 79, 59, 0.25), 0 8px 30px rgba(14, 54, 42, 0.08);
  transform: translateX(-50%) rotate(2.5deg);
}

.phone-card::after {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(16, 33, 27, 0.11);
  border-radius: 40px;
  content: "";
  pointer-events: none;
}

.phone-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.visual-stamp {
  position: absolute;
  z-index: 2;
  top: 10px;
  right: -4px;
  display: grid;
  place-items: center;
  width: 108px;
  height: 108px;
  padding-top: 8px;
  color: var(--ink);
  background: var(--lime);
  border: 5px solid var(--paper);
  border-radius: 50%;
  box-shadow: 0 18px 40px rgba(66, 85, 25, 0.14);
  font-family: Georgia, serif;
  font-size: 27px;
  font-weight: 800;
  line-height: 0.75;
  text-align: center;
  transform: rotate(9deg);
}

.visual-stamp small {
  font-family: inherit;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.floating-note {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 224px;
  padding: 13px 15px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(16, 33, 27, 0.08);
  border-radius: 18px;
  box-shadow: 0 20px 48px rgba(20, 74, 57, 0.16);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.floating-note > span:last-child {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.floating-note strong {
  font-size: 14px;
}

.floating-note small {
  color: #728079;
  font-size: 11px;
}

.note-icon {
  display: grid;
  place-items: center;
  flex: 0 0 38px;
  height: 38px;
  color: var(--ink);
  background: var(--mint-bright);
  border-radius: 12px;
  font-size: 14px;
  font-weight: 800;
}

.note-icon-light {
  background: var(--lime);
}

.note-top {
  top: 180px;
  left: -50px;
  animation: float-note 5s ease-in-out infinite;
}

.note-bottom {
  right: -28px;
  bottom: 80px;
  animation: float-note 5.6s ease-in-out -2s infinite;
}

.hero-orb {
  position: absolute;
  z-index: 0;
  border-radius: 50%;
  filter: blur(1px);
  pointer-events: none;
}

.hero-orb-one {
  top: 110px;
  right: -160px;
  width: 670px;
  height: 670px;
  background: radial-gradient(circle at 34% 35%, rgba(38, 226, 174, 0.35), rgba(38, 226, 174, 0.03) 68%);
}

.hero-orb-two {
  bottom: 80px;
  left: -140px;
  width: 430px;
  height: 430px;
  background: radial-gradient(circle, rgba(223, 255, 121, 0.26), rgba(223, 255, 121, 0) 68%);
}

.hero-marquee {
  position: relative;
  z-index: 3;
  overflow: hidden;
  padding: 17px 0;
  color: var(--white);
  background: var(--ink);
  transform: rotate(-1deg) scale(1.02);
}

.marquee-track {
  display: flex;
  align-items: center;
  width: max-content;
  animation: marquee 34s linear infinite;
}

.marquee-track span {
  padding: 0 30px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.marquee-track i {
  width: 7px;
  height: 7px;
  background: var(--mint-bright);
  border-radius: 50%;
}

.section {
  padding: 140px 0;
}

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

.section-heading,
.screens-header {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 80px;
  align-items: end;
  margin-bottom: 64px;
}

.section-kicker {
  margin: 0 0 16px;
  color: var(--mint-deep);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-heading h2,
.screens-header h2,
.download-intro h2 {
  margin: 0;
  font-size: clamp(42px, 5vw, 66px);
  font-weight: 790;
  line-height: 1.12;
  letter-spacing: -0.055em;
}

.download-intro h2 {
  font-size: clamp(42px, 4.5vw, 58px);
  white-space: nowrap;
}

.section-heading > p {
  max-width: 440px;
  margin: 0 0 6px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.9;
}

.language-note {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  margin: -28px 0 38px;
  padding: 20px 24px;
  color: #455850;
  background: #edf8f2;
  border: 1px solid rgba(8, 174, 125, 0.14);
  border-radius: 18px;
}

.language-note strong {
  color: #087656;
  font-size: 14px;
}

.language-note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
}

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

.feature-card {
  position: relative;
  overflow: hidden;
  min-height: 400px;
  padding: 38px;
  background: var(--white);
  border: 1px solid rgba(16, 33, 27, 0.07);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 46px rgba(30, 72, 59, 0.06);
  transition: transform 250ms ease, box-shadow 250ms ease;
}

.feature-card:hover {
  box-shadow: 0 26px 70px rgba(30, 72, 59, 0.1);
  transform: translateY(-5px);
}

.feature-number {
  position: absolute;
  top: 34px;
  right: 36px;
  color: #9aa59f;
  font-family: Georgia, serif;
  font-size: 14px;
  font-style: italic;
}

.feature-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  margin-bottom: 54px;
  border-radius: 18px;
}

.feature-icon svg {
  width: 26px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.mint-icon {
  color: #087656;
  background: #b7f9df;
}

.blue-icon {
  color: #14557c;
  background: var(--sky);
}

.dark-icon {
  color: var(--ink);
  background: var(--lime);
}

.feature-card h3 {
  max-width: 460px;
  margin: 0 0 14px;
  font-size: 29px;
  font-weight: 750;
  letter-spacing: -0.04em;
}

.feature-card p {
  max-width: 440px;
  margin: 0;
  color: #69756f;
  font-size: 15px;
  line-height: 1.8;
}

.feature-card-large {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: 0.92fr 1.08fr;
  align-items: center;
  min-height: 410px;
  background:
    radial-gradient(circle at 72% 35%, rgba(255, 255, 255, 0.42), transparent 30%),
    linear-gradient(128deg, #c9ffe9, #eaff9e);
}

.feature-card-large .feature-icon {
  margin-bottom: 44px;
  background: rgba(255, 255, 255, 0.72);
}

.wave-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  height: 220px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 30px;
  box-shadow: 0 24px 60px rgba(32, 116, 87, 0.12);
  transform: rotate(2deg);
}

.wave-visual span {
  width: 8px;
  height: var(--h);
  background: var(--ink);
  border-radius: 999px;
  animation: sound-wave 1.9s ease-in-out infinite alternate;
}

.wave-visual span:nth-child(2n) {
  animation-delay: -0.8s;
}

.wave-visual span:nth-child(3n) {
  animation-delay: -1.2s;
}

.search-demo,
.translation-demo {
  position: absolute;
  right: 38px;
  bottom: 38px;
  left: 38px;
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 62px;
  padding: 0 18px;
  color: #6b7771;
  background: #f2f5f2;
  border: 1px solid rgba(16, 33, 27, 0.06);
  border-radius: 18px;
  font-size: 13px;
}

.search-demo svg {
  width: 20px;
  fill: none;
  stroke: #809088;
  stroke-width: 1.8;
}

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

.dark-card .feature-number,
.dark-card p {
  color: #9fafaa;
}

.translation-demo {
  justify-content: space-between;
  color: var(--white);
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.08);
}

.translation-demo span {
  font-weight: 650;
}

.translation-demo i {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: var(--ink);
  background: var(--mint-bright);
  border-radius: 50%;
  font-style: normal;
}

.culture-card {
  grid-column: 1 / -1;
  min-height: 340px;
  padding: 52px;
  background: #fff5dd;
}

.culture-card h3 {
  margin-top: 66px;
}

.culture-badge {
  position: absolute;
  top: 40px;
  left: 52px;
  padding: 8px 13px;
  color: #735923;
  background: rgba(229, 173, 37, 0.16);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.culture-words {
  position: absolute;
  top: 50%;
  right: 6%;
  width: 42%;
  height: 70%;
  transform: translateY(-50%);
}

.culture-words span {
  position: absolute;
  display: inline-block;
  padding: 14px 22px;
  color: #553d12;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(103, 75, 18, 0.1);
  border-radius: 999px;
  box-shadow: 0 14px 34px rgba(95, 71, 25, 0.08);
  font-family: Georgia, "Noto Serif CJK SC", serif;
  font-size: 18px;
  font-weight: 650;
}

.culture-words span:nth-child(1) { top: 3%; left: 13%; transform: rotate(-6deg); }
.culture-words span:nth-child(2) { top: 42%; right: 2%; transform: rotate(8deg); }
.culture-words span:nth-child(3) { bottom: 0; left: 20%; transform: rotate(3deg); }
.culture-words span:nth-child(4) { top: 35%; left: 0; transform: rotate(-3deg); }

.screens-section {
  overflow: hidden;
  padding: 140px 0 110px;
  color: var(--white);
  background:
    radial-gradient(circle at 78% 18%, rgba(30, 211, 157, 0.18), transparent 27%),
    var(--ink);
}

.screens-header {
  grid-template-columns: 1fr auto;
  align-items: end;
}

.section-kicker-light {
  color: var(--mint-bright);
}

.carousel-controls {
  display: flex;
  gap: 10px;
}

.carousel-controls button {
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  cursor: pointer;
  transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.carousel-controls button:hover {
  color: var(--ink);
  background: var(--mint-bright);
  transform: translateY(-2px);
}

.gallery-wrap {
  width: 100%;
}

.gallery-track {
  display: flex;
  gap: 22px;
  overflow-x: auto;
  padding: 12px max(24px, calc((100vw - 1180px) / 2)) 34px;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

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

.gallery-track:focus-visible {
  outline: 2px solid var(--mint-bright);
  outline-offset: 6px;
}

.gallery-card {
  flex: 0 0 300px;
  margin: 0;
  scroll-snap-align: center;
  transition: opacity 300ms ease, transform 300ms ease;
}

.gallery-card:not(.is-active) {
  opacity: 0.58;
  transform: scale(0.97);
}

.gallery-card img {
  width: 100%;
  height: auto;
  aspect-ratio: auto;
  object-fit: contain;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 30px;
  box-shadow: 0 26px 66px rgba(0, 0, 0, 0.24);
}

.gallery-card figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 4px 0;
  color: #dce5e1;
  font-size: 14px;
  font-weight: 650;
}

.gallery-card figcaption span {
  color: #799087;
  font-family: Georgia, serif;
  font-size: 12px;
  font-style: italic;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  min-height: 14px;
  margin-top: 8px;
}

.carousel-dots button {
  width: 7px;
  height: 7px;
  padding: 0;
  background: rgba(255, 255, 255, 0.25);
  border: 0;
  border-radius: 99px;
  cursor: pointer;
  transition: width 180ms ease, background 180ms ease;
}

.carousel-dots button.is-active {
  width: 28px;
  background: var(--mint-bright);
}

.download-section {
  background: var(--paper);
}

.download-panel {
  position: relative;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 80px;
  overflow: hidden;
  padding: 80px;
  background:
    radial-gradient(circle at 18% 100%, rgba(223, 255, 121, 0.45), transparent 36%),
    linear-gradient(135deg, #bdffe6, #eaffbd 55%, #fcffef);
  border: 1px solid rgba(19, 104, 78, 0.1);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.download-panel::before {
  position: absolute;
  top: -120px;
  left: 42%;
  width: 330px;
  height: 330px;
  border: 1px solid rgba(16, 33, 27, 0.09);
  border-radius: 50%;
  content: "";
}

.download-intro,
.store-list {
  position: relative;
  z-index: 1;
}

.download-intro > p:not(.section-kicker) {
  margin: 24px 0 0;
  color: #4f665d;
  font-size: 16px;
  line-height: 1.8;
}

.download-note {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 34px;
  color: #3e5b51;
  font-size: 13px;
  font-weight: 620;
}

.download-note svg {
  width: 22px;
  fill: none;
  stroke: var(--mint-deep);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.store-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.store-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 15px;
  align-items: center;
  min-height: 96px;
  padding: 17px 20px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(16, 33, 27, 0.08);
  border-radius: 22px;
  box-shadow: 0 14px 36px rgba(28, 80, 63, 0.07);
  transition: background 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.store-card:hover {
  background: var(--white);
  box-shadow: 0 20px 46px rgba(28, 80, 63, 0.13);
  transform: translateX(5px);
}

.store-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 17px;
}

.store-icon img {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.appstore-icon {
  background: linear-gradient(180deg, #45b8f8, #0877ec);
}

.android-icon {
  background: #f6faf7;
  border: 1px solid rgba(61, 220, 132, 0.2);
}

.appgallery-icon {
  background: #d92543;
}

.store-card > span:nth-child(2) {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.store-card small {
  color: #718078;
  font-size: 11px;
}

.store-card strong {
  font-size: 17px;
  font-weight: 750;
}

.store-arrow {
  width: 21px;
  color: #829088;
}

.site-footer {
  padding: 60px 0 46px;
  background: #edf1eb;
  border-top: 1px solid rgba(16, 33, 27, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 44px;
  align-items: center;
}

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

.footer-brand > div {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.footer-brand strong {
  font-size: 16px;
}

.footer-brand span,
.footer-meta {
  color: #718078;
  font-size: 12px;
}

.footer-links {
  display: flex;
  gap: 28px;
}

.footer-meta {
  grid-column: 1 / -1;
  padding-top: 28px;
  border-top: 1px solid rgba(16, 33, 27, 0.09);
}

.footer-meta p {
  margin: 0;
}

.footer-meta > div {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 12px;
}

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

.footer-meta a:hover {
  color: var(--ink);
}

.trademark-note {
  max-width: 920px;
  margin-top: 16px !important;
  color: #87928c;
  font-size: 10px;
  line-height: 1.7;
}

.download-modal {
  width: min(520px, calc(100% - 32px));
  padding: 34px;
  color: var(--ink);
  background: #f9fbf7;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 30px;
  box-shadow: 0 34px 100px rgba(8, 44, 33, 0.28);
}

.download-modal::backdrop {
  background: rgba(7, 25, 20, 0.55);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.download-modal[open] {
  animation: modal-in 220ms ease both;
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: #65736d;
  background: #eef2ed;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
}

.modal-close:hover {
  color: var(--ink);
  background: #e2e9e3;
}

.modal-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-right: 40px;
}

.modal-brand p {
  margin: 0 0 5px;
  color: var(--mint-deep);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.modal-brand h2 {
  margin: 0;
  font-size: 25px;
  letter-spacing: -0.03em;
}

.modal-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 28px;
}

.modal-options a {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 15px 12px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 17px;
  transition: border 180ms ease, transform 180ms ease;
}

.modal-options a:hover {
  border-color: var(--mint-deep);
  transform: translateY(-3px);
}

.modal-options strong {
  font-size: 15px;
}

.modal-platform-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
}

.modal-platform-icon img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.modal-option-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
}

.modal-option-copy small {
  color: #748179;
  font-size: 11px;
}

.modal-hint {
  margin: 18px 0 0;
  color: #839088;
  font-size: 11px;
  text-align: center;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 650ms ease, transform 650ms cubic-bezier(0.22, 1, 0.36, 1);
}

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

.reveal-delay-1 { transition-delay: 90ms; }
.reveal-delay-2 { transition-delay: 180ms; }
.reveal-delay-3 { transition-delay: 270ms; }

@keyframes float-note {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-12px) rotate(1deg); }
}

@keyframes marquee {
  to { transform: translateX(-50%); }
}

@keyframes sound-wave {
  to { height: calc(var(--h) * 0.55); }
}

@keyframes modal-in {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@media (max-width: 1024px) {
  :root {
    --shell: min(100% - 40px, 900px);
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 38px;
  }

  .hero h1 {
    font-size: clamp(52px, 7vw, 72px);
  }

  .note-top { left: -20px; }
  .note-bottom { right: -8px; }
  .floating-note { min-width: 205px; }

  .download-panel {
    gap: 45px;
    padding: 60px;
  }
}

@media (max-width: 820px) {
  :root {
    --header-height: 72px;
  }

  .desktop-nav,
  .nav-download {
    display: none;
  }

  .menu-toggle {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    padding: 0 11px;
    background: transparent;
    border: 1px solid rgba(16, 33, 27, 0.11);
    border-radius: 50%;
    cursor: pointer;
  }

  .menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--ink);
    border-radius: 3px;
    transition: transform 180ms ease;
  }

  .menu-open .menu-toggle span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-open .menu-toggle span:last-child { transform: translateY(-4px) rotate(-45deg); }

  .mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: var(--shell);
    margin: 0 auto;
    padding: 8px 0 20px;
  }

  .mobile-nav[hidden] {
    display: none;
  }

  .mobile-nav a {
    padding: 14px 2px;
    border-bottom: 1px solid rgba(16, 33, 27, 0.08);
    font-size: 15px;
    font-weight: 650;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    min-height: 0;
    padding: 72px 0 84px;
  }

  .hero-copy {
    text-align: center;
  }

  .hero h1,
  .hero-lead {
    margin-right: auto;
    margin-left: auto;
  }

  .hero-actions,
  .platform-line {
    justify-content: center;
  }

  .hero-visual {
    width: min(100%, 540px);
    height: 630px;
    margin: 0 auto;
  }

  .section {
    padding: 104px 0;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 26px;
    margin-bottom: 48px;
  }

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

  .feature-card-large .feature-copy {
    position: relative;
    z-index: 2;
  }

  .wave-visual {
    margin-top: 38px;
  }

  .culture-words {
    opacity: 0.54;
  }

  .screens-section {
    padding: 104px 0 90px;
  }

  .screens-header {
    gap: 30px;
  }

  .download-panel {
    grid-template-columns: 1fr;
    gap: 46px;
    padding: 60px;
  }
}

@media (max-width: 620px) {
  :root {
    --shell: calc(100% - 32px);
    --radius-xl: 30px;
  }

  .brand img {
    width: 42px;
    height: 42px;
  }

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

  .hero-grid {
    padding-top: 54px;
  }

  .eyebrow {
    font-size: 11px;
  }

  .hero h1 {
    margin-top: 22px;
    font-size: clamp(44px, 14vw, 60px);
    line-height: 1.08;
  }

  .hero-lead {
    font-size: 16px;
    line-height: 1.75;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .platform-line {
    flex-wrap: wrap;
  }

  .hero-visual {
    width: 100%;
    height: 580px;
  }

  .phone-card {
    width: 254px;
    height: auto;
    border-width: 6px;
    border-radius: 40px;
  }

  .visual-stamp {
    top: 4px;
    right: -8px;
    width: 88px;
    height: 88px;
    font-size: 22px;
  }

  .note-top {
    top: 168px;
    left: -8px;
  }

  .note-bottom {
    right: -8px;
    bottom: 46px;
  }

  .floating-note {
    min-width: 0;
    max-width: 198px;
    padding: 10px 12px;
  }

  .floating-note small {
    display: none;
  }

  .note-icon {
    flex-basis: 34px;
    height: 34px;
  }

  .hero-marquee {
    transform: rotate(-1.5deg) scale(1.04);
  }

  .section-heading h2,
  .screens-header h2,
  .download-intro h2 {
    font-size: 40px;
  }

  .language-note {
    grid-template-columns: 1fr;
    gap: 8px;
    margin-top: -18px;
    padding: 18px;
  }

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

  .feature-card,
  .feature-card-large,
  .culture-card {
    grid-column: auto;
    min-height: 370px;
    padding: 28px;
    border-radius: 24px;
  }

  .feature-card-large {
    min-height: 620px;
  }

  .feature-icon {
    margin-bottom: 42px;
  }

  .wave-visual {
    gap: 7px;
    height: 190px;
    padding: 20px;
  }

  .wave-visual span {
    width: 6px;
  }

  .search-demo,
  .translation-demo {
    right: 28px;
    bottom: 28px;
    left: 28px;
  }

  .culture-card {
    min-height: 440px;
  }

  .culture-badge {
    top: 28px;
    left: 28px;
  }

  .culture-card h3 {
    margin-top: 62px;
  }

  .culture-words {
    top: auto;
    right: 18px;
    bottom: 18px;
    width: 82%;
    height: 38%;
    transform: none;
  }

  .culture-words span {
    padding: 10px 15px;
    font-size: 14px;
  }

  .screens-header {
    grid-template-columns: 1fr;
  }

  .gallery-track {
    gap: 16px;
    padding-right: 24px;
    padding-left: 24px;
    scroll-padding-left: 24px;
  }

  .gallery-card {
    flex-basis: min(78vw, 286px);
  }

  .download-panel {
    padding: 34px 22px;
  }

  .download-intro {
    padding: 8px 6px 0;
  }

  .store-card {
    padding: 14px;
  }

  .store-icon {
    width: 52px;
    height: 52px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 18px 24px;
  }

  .footer-meta {
    grid-column: auto;
  }

  .download-modal {
    padding: 28px 20px 24px;
    border-radius: 24px;
  }

  .modal-brand img {
    width: 60px;
    height: 60px;
  }

  .modal-brand h2 {
    font-size: 22px;
  }

  .modal-options {
    grid-template-columns: 1fr;
  }

  .modal-options a {
    grid-template-columns: 42px minmax(0, 1fr);
  }
}

@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;
  }
}