:root {
  color-scheme: light;
  --ink: #17201c;
  --muted: #65706a;
  --paper: #fbf7ee;
  --wash: #f2ede2;
  --surface: rgba(255, 252, 244, 0.78);
  --line: rgba(23, 32, 28, 0.13);
  --leaf: #2e6c54;
  --moss: #7da48e;
  --coral: #d87a5f;
  --plum: #6f4e63;
  --shadow: 0 24px 70px rgba(23, 32, 28, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(23, 32, 28, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(23, 32, 28, 0.035) 1px, transparent 1px),
    radial-gradient(circle at 20% 10%, rgba(125, 164, 142, 0.24), transparent 28rem),
    radial-gradient(circle at 80% 2%, rgba(216, 122, 95, 0.15), transparent 24rem),
    var(--paper);
  background-size: 44px 44px, 44px 44px, auto, auto, auto;
  color: var(--ink);
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(115deg, transparent 0 42%, rgba(125, 164, 142, 0.08) 42% 54%, transparent 54%),
    linear-gradient(70deg, transparent 0 58%, rgba(216, 122, 95, 0.07) 58% 66%, transparent 66%);
  opacity: var(--scroll-glow, 0);
  transform: translateY(calc(var(--scroll-shift, 0) * 1px));
  transition: opacity 200ms ease;
  pointer-events: none;
}

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

img,
video {
  display: block;
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 14px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 32px));
  margin: 14px auto 0;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 18px;
  background: rgba(255, 252, 244, 0.84);
  box-shadow: 0 12px 36px rgba(23, 32, 28, 0.08);
  backdrop-filter: blur(20px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.site-header nav {
  display: flex;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.site-header nav a {
  padding: 8px 12px;
  border-radius: 999px;
}

.site-header nav a:hover {
  background: rgba(125, 164, 142, 0.17);
  color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(520px, 1.08fr);
  align-items: center;
  gap: 52px;
  width: min(1180px, calc(100% - 32px));
  min-height: calc(100vh - 148px);
  margin: 0 auto;
  padding: 34px 0 58px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--leaf);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 720px;
  margin-bottom: 24px;
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: clamp(46px, 5.2vw, 76px);
  font-weight: 900;
  line-height: 1.04;
  text-wrap: balance;
}

h2 {
  margin-bottom: 0;
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: clamp(34px, 4vw, 58px);
  font-weight: 900;
  line-height: 1.08;
  text-wrap: balance;
}

h3 {
  margin-bottom: 8px;
  font-size: 21px;
  line-height: 1.26;
}

.hero-lede {
  max-width: 640px;
  color: #4f5b55;
  font-size: 19px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 900;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

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

.button.primary {
  background: #17201c;
  color: #fffaf0;
  box-shadow: 0 16px 40px rgba(23, 32, 28, 0.23);
}

.button.secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.58);
}

.app-store-button {
  gap: 10px;
}

.app-store-button span {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
  font-size: 20px;
  line-height: 1;
}

.hero-device {
  position: relative;
}

.desktop-frame {
  position: relative;
  overflow: hidden;
  min-height: 560px;
  border: 0;
  border-radius: 32px;
  background:
    radial-gradient(circle at 72% 22%, rgba(216, 122, 95, 0.14), transparent 16rem),
    radial-gradient(circle at 18% 72%, rgba(125, 164, 142, 0.18), transparent 18rem),
    linear-gradient(135deg, rgba(255, 252, 244, 0.94), rgba(242, 237, 226, 0.64));
  box-shadow: 0 28px 88px rgba(23, 32, 28, 0.12);
  transform: translateY(calc(var(--parallax-y, 0) * 1px));
  transition: transform 120ms linear;
}

.desktop-frame::before {
  content: "";
  position: absolute;
  inset: 34px;
  border-radius: 28px;
  background:
    linear-gradient(90deg, rgba(23, 32, 28, 0.035) 1px, transparent 1px),
    linear-gradient(rgba(23, 32, 28, 0.035) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: 0.7;
}

.hero-panel {
  position: absolute;
  top: 54px;
  right: 66px;
  width: min(47%, 300px);
  border-radius: 24px;
  box-shadow: 0 26px 68px rgba(23, 32, 28, 0.18);
}

.hero-floating {
  position: absolute;
  left: 54px;
  bottom: 68px;
  width: min(48%, 330px);
  border-radius: 24px;
  box-shadow: 0 24px 58px rgba(23, 32, 28, 0.16);
}

.section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 74px 0;
  scroll-margin-top: 110px;
}

.section-heading {
  display: grid;
  grid-template-columns: 0.36fr 0.64fr;
  gap: 46px;
  align-items: start;
  margin-bottom: 34px;
}

.section-heading.narrow {
  display: block;
  max-width: 800px;
}

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

.demo-card,
.showcase-video,
.theme-gallery figure,
.character-shot,
.download-card {
  border: 0;
  border-radius: 24px;
  background: rgba(255, 252, 244, 0.62);
  box-shadow: 0 22px 64px rgba(23, 32, 28, 0.09);
}

.demo-card {
  overflow: hidden;
}

.settings-demo {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: minmax(300px, 0.43fr) minmax(0, 0.57fr);
  align-items: center;
  gap: 6px;
}

.media-shell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 14px;
  background:
    radial-gradient(circle at 22% 12%, rgba(125, 164, 142, 0.12), transparent 15rem),
    linear-gradient(135deg, rgba(255, 255, 255, 0.48), rgba(242, 237, 226, 0.6)),
    var(--wash);
}

.media-shell::before {
  content: none;
}

.media-shell.landscape {
  aspect-ratio: 16 / 9;
}

.media-shell.portrait {
  aspect-ratio: 428 / 666;
}

.media-shell img,
.media-shell video {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 18px;
}

.card-copy {
  padding: 22px 24px 24px;
}

.settings-demo .card-copy {
  padding: 30px 34px;
}

.settings-media {
  height: 430px;
  aspect-ratio: auto;
  background: transparent;
}

.settings-media img {
  width: auto;
  max-width: 100%;
  filter: drop-shadow(0 18px 34px rgba(23, 32, 28, 0.16));
}

.card-copy span,
.feature-list span {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--coral);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.card-copy p,
.feature-list p,
.character-copy p,
.download p,
.download-card p {
  color: var(--muted);
}

.setting-points {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.setting-points div {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid rgba(23, 32, 28, 0.1);
}

.setting-points strong {
  font-size: 16px;
}

.setting-points small {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 34px;
}

.feature-list article {
  min-height: 230px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.5);
}

.showcase-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 0.74fr;
  gap: 22px;
  align-items: start;
}

.showcase-video {
  overflow: hidden;
  background: transparent;
  box-shadow: none;
}

.theme-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.theme-gallery figure {
  overflow: hidden;
  margin: 0;
  padding: 10px;
  background: rgba(255, 252, 244, 0.52);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.theme-gallery figure:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 54px rgba(23, 32, 28, 0.12);
}

.theme-gallery img {
  width: 100%;
  aspect-ratio: 428 / 666;
  object-fit: contain;
  border-radius: 18px;
}

.theme-gallery figcaption {
  padding: 10px 2px 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.character-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) 360px;
  gap: 64px;
  align-items: center;
}

.character-shot {
  padding: 14px;
}

.character-shot img {
  width: 100%;
  border-radius: 18px;
}

.download {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) 360px;
  gap: 48px;
  align-items: center;
  margin-bottom: 36px;
  padding: 52px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 30px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.76), rgba(242, 237, 226, 0.82)),
    var(--wash);
  box-shadow: var(--shadow);
}

.download-card {
  display: grid;
  justify-items: center;
  text-align: center;
  padding: 26px;
}

.download-card img {
  width: 86px;
  height: 86px;
  margin-bottom: 16px;
  border-radius: 20px;
}

.download-card h3 {
  margin-bottom: 4px;
}

.download-card p {
  margin-bottom: 20px;
}

.site-footer {
  display: flex;
  justify-content: center;
  gap: 18px;
  padding: 28px 16px 46px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer span {
  color: var(--ink);
  font-weight: 900;
}

[data-reveal] {
  opacity: 0;
  transform: translate3d(0, 24px, 0) scale(0.985);
  transition:
    opacity 680ms ease,
    transform 680ms cubic-bezier(0.18, 0.8, 0.22, 1);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

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

[data-reveal="left"] {
  transform: translate3d(-28px, 12px, 0) scale(0.985);
}

[data-reveal="right"] {
  transform: translate3d(28px, 12px, 0) scale(0.985);
}

[data-reveal="lift"] {
  transform: translate3d(0, 34px, 0) scale(0.98);
}

[data-reveal="left"].is-visible,
[data-reveal="right"].is-visible,
[data-reveal="lift"].is-visible {
  transform: translate3d(0, 0, 0) scale(1);
}

.demo-card.is-visible .media-shell video,
.showcase-video.is-visible .media-shell video {
  animation: mediaSettle 900ms cubic-bezier(0.18, 0.8, 0.22, 1) both;
}

@keyframes mediaSettle {
  from {
    filter: saturate(0.82) contrast(0.94);
    transform: scale(0.985);
  }
  to {
    filter: saturate(1) contrast(1);
    transform: scale(1);
  }
}

@media (max-width: 980px) {
  .site-header nav {
    display: none;
  }

  .hero,
  .section-heading,
  .demo-grid,
  .showcase-grid,
  .character-section,
  .download {
    grid-template-columns: 1fr;
  }

  .settings-demo {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .settings-media {
    height: 440px;
    aspect-ratio: auto;
  }

  .hero {
    gap: 34px;
    min-height: auto;
    padding-top: 42px;
  }

  .desktop-frame {
    min-height: 460px;
    height: 460px;
  }

  .hero-panel {
    top: 38px;
    right: 28px;
    width: 230px;
  }

  .hero-floating {
    bottom: 50px;
    left: 24px;
    width: 290px;
  }

  .feature-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .character-shot {
    max-width: 360px;
  }
}

@media (max-width: 560px) {
  .site-header {
    top: 10px;
    width: min(100% - 24px, 1180px);
  }

  h1 {
    font-size: 34px;
    line-height: 1.18;
  }

  h2 {
    font-size: 34px;
  }

  .feature-list,
  .theme-gallery {
    grid-template-columns: 1fr;
  }

  .desktop-frame {
    min-height: 390px;
    height: 390px;
    border-radius: 24px;
  }

  .hero-panel {
    top: 28px;
    right: 18px;
    width: 168px;
  }

  .hero-floating {
    bottom: 42px;
    left: 18px;
    width: 218px;
  }

  .section {
    padding: 54px 0;
  }

  .media-shell {
    padding: 10px;
  }

  .settings-demo .card-copy {
    padding: 22px;
  }

  .setting-points div {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 12px 0;
  }

  .download {
    padding: 30px 18px;
  }

  .app-store-button {
    width: 100%;
  }

  [data-reveal="left"],
  [data-reveal="right"] {
    transform: translate3d(0, 24px, 0) scale(0.985);
  }

  [data-reveal="left"].is-visible,
  [data-reveal="right"].is-visible {
    transform: translate3d(0, 0, 0) scale(1);
  }
}

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

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

  .desktop-frame {
    transform: none !important;
  }
}