:root {
  color-scheme: light dark;
  --accent: #ff6b21;
  --bg: #f7f7f9;
  --card: #fff;
  --text: #161619;
  --muted: #66666d;
  --line: #dedee5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0c;
    --card: #19191c;
    --text: #f6f6f7;
    --muted: #aaaab2;
    --line: #34343a;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Hiragino Sans", sans-serif;
  line-height: 1.75;
}
header, main, footer { width: min(760px, calc(100% - 32px)); margin: auto; }
header { padding: 40px 0 22px; }
.brand { color: var(--accent); font-weight: 800; letter-spacing: .02em; }
h1 { margin: .15em 0; font-size: clamp(2rem, 8vw, 3rem); line-height: 1.2; }
h2 { margin: 2em 0 .55em; font-size: 1.25rem; }
p, li, dd { color: var(--muted); }
a { color: var(--accent); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 20px; margin: 14px 0; }
nav { display: flex; flex-wrap: wrap; gap: 8px 18px; }
dl { display: grid; grid-template-columns: minmax(8em, 12em) 1fr; gap: 10px 18px; }
dt { font-weight: 700; }
dd { margin: 0; }
.notice { border-left: 4px solid var(--accent); padding-left: 14px; }
footer { padding: 34px 0 60px; color: var(--muted); font-size: .85rem; }

/* Top page */
.landing {
  color-scheme: dark;
  background: #0b0b0c;
  color: #f7f7f8;
  --landing-card: #19191b;
  --landing-line: #323236;
  --landing-muted: #a5a5ad;
}
.landing header, .landing main, .landing footer { width: min(1120px, calc(100% - 40px)); }
.landing p { color: var(--landing-muted); }
.site-header {
  min-height: 84px;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -.02em;
  text-decoration: none;
}
.wordmark img { display: block; border-radius: 12px; }
.top-nav { justify-content: flex-end; gap: 8px 28px; }
.top-nav a { color: #d8d8dc; font-size: .92rem; font-weight: 650; text-decoration: none; }
.top-nav a:hover { color: var(--accent); }
.hero {
  min-height: 700px;
  padding: 72px 64px;
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(420px, 1.05fr);
  align-items: center;
  gap: 68px;
  overflow: hidden;
  background: #141416;
  border: 1px solid #27272a;
  border-radius: 36px;
}
.hero-icon { display: block; margin-bottom: 34px; border-radius: 27px; box-shadow: 0 18px 50px rgba(0, 0, 0, .38); }
.eyebrow {
  margin: 0 0 12px;
  color: var(--accent) !important;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .16em;
}
.hero h1 {
  margin: 0;
  font-size: clamp(3.1rem, 4.5vw, 4.6rem);
  font-weight: 850;
  letter-spacing: -.065em;
  line-height: 1.02;
}
.hero h1 span { display: block; white-space: nowrap; }
.hero-lead { max-width: 36em; margin: 28px 0 0; font-size: 1.08rem; line-height: 1.9; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 28px; }
.hero-tags span {
  padding: 7px 13px;
  color: #e8e8ea;
  background: #242427;
  border: 1px solid #343438;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 700;
}
.release-note { margin: 22px 0 0; font-size: .8rem; }
.hero-visual { position: relative; min-height: 590px; }
.phone {
  position: absolute;
  width: min(300px, 70%);
  overflow: hidden;
  background: #000;
  border: 8px solid #303034;
  border-radius: 44px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, .48);
}
.phone img { display: block; width: 100%; height: auto; }
.phone-back { top: 10px; left: 0; transform: rotate(-5deg); opacity: .75; }
.phone-front { top: 78px; right: 0; transform: rotate(3deg); }
.section { padding: 112px 0 12px; }
.section-heading { max-width: 680px; }
.section-heading h2, .privacy-callout h2 {
  margin: 0;
  font-size: clamp(2rem, 4.8vw, 3.65rem);
  letter-spacing: -.05em;
  line-height: 1.18;
}
.section-heading > p:last-child { margin: 18px 0 0; font-size: 1rem; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 42px;
}
.feature-card {
  min-height: 270px;
  padding: 34px;
  background: var(--landing-card);
  border: 1px solid var(--landing-line);
  border-radius: 24px;
}
.feature-card h3 { margin: 40px 0 10px; font-size: 1.4rem; letter-spacing: -.03em; }
.feature-card p { margin: 0; }
.feature-number { color: var(--accent); font-size: .8rem; font-weight: 800; letter-spacing: .12em; }
.feature-card-ai { background: #1a1820; border-color: #3d344b; }
.feature-card-ai h3 { margin-top: 25px; }
.ai-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #fff;
  background: #6d5cff;
  border: 5px solid #352c77;
  border-radius: 12px;
  font-size: 1rem;
}
.screenshots-section { overflow: hidden; }
.screenshot-gallery {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-top: 44px;
}
.screenshot-card { margin: 0; min-width: 0; }
.screen-frame {
  padding: 7px;
  overflow: hidden;
  background: #2b2b2f;
  border: 1px solid #3b3b40;
  border-radius: 34px;
  box-shadow: 0 20px 48px rgba(0, 0, 0, .28);
}
.screen-frame img { display: block; width: 100%; height: auto; border-radius: 27px; }
.screenshot-card figcaption { display: flex; flex-direction: column; gap: 2px; margin-top: 16px; }
.screenshot-card figcaption strong { font-size: 1rem; }
.screenshot-card figcaption span { color: var(--landing-muted); font-size: .8rem; line-height: 1.55; }
.privacy-callout {
  margin-top: 112px;
  padding: 52px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 48px;
  background: #211c19;
  border: 1px solid #4a3427;
  border-radius: 28px;
}
.privacy-callout p:last-child { margin: 0; }
.support-section { padding-bottom: 54px; }
.support-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 38px;
}
.support-links a {
  min-height: 74px;
  padding: 20px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: #f5f5f6;
  background: var(--landing-card);
  border: 1px solid var(--landing-line);
  border-radius: 18px;
  font-weight: 700;
  text-decoration: none;
}
.support-links a:hover { color: var(--accent); border-color: #684025; }
.site-footer {
  padding: 42px 0 70px;
  display: flex;
  justify-content: space-between;
  border-top: 1px solid #2b2b2e;
  color: #77777f;
}

@media (max-width: 900px) {
  .hero { padding: 56px 36px; grid-template-columns: 1fr; gap: 40px; }
  .hero-copy { max-width: 620px; }
  .hero-visual { min-height: 570px; }
  .phone { width: min(310px, 54%); }
  .phone-back { left: 12%; }
  .phone-front { right: 12%; }
  .screenshot-gallery { display: flex; gap: 18px; overflow-x: auto; padding: 0 20px 20px 0; scroll-snap-type: x mandatory; }
  .screenshot-card { flex: 0 0 min(270px, 70vw); scroll-snap-align: start; }
}

@media (max-width: 620px) {
  .landing header, .landing main, .landing footer { width: min(100% - 28px, 1120px); }
  .site-header { min-height: 72px; padding: 14px 0; }
  .wordmark img { width: 38px; height: 38px; border-radius: 10px; }
  .top-nav { gap: 14px; }
  .top-nav a:not(:last-child) { display: none; }
  .hero { min-height: 0; padding: 38px 22px 0; border-radius: 26px; }
  .hero-icon { width: 84px; height: 84px; margin-bottom: 28px; border-radius: 21px; }
  .hero h1 { font-size: clamp(2.5rem, 11vw, 3.2rem); }
  .hero-lead { font-size: .98rem; }
  .hero-visual { min-height: 455px; margin-top: 8px; }
  .phone { width: min(246px, 70%); border-width: 6px; border-radius: 34px; }
  .phone-back { top: 4px; left: -2%; }
  .phone-front { top: 54px; right: -2%; }
  .section { padding-top: 84px; }
  .feature-grid, .support-links, .privacy-callout { grid-template-columns: 1fr; }
  .feature-card { min-height: 230px; padding: 28px; }
  .feature-card h3 { margin-top: 30px; }
  .privacy-callout { margin-top: 84px; padding: 30px 26px; gap: 24px; }
  .site-footer { gap: 10px; flex-direction: column; }
}

@media (max-width: 560px) {
  dl { grid-template-columns: 1fr; gap: 2px; }
  dd { margin-bottom: 12px; }
}

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