:root {
  color-scheme: light dark;
  --bg: #f4f5f2;
  --surface: #e8ebe5;
  --text: #18201a;
  --muted: #59635b;
  --line: #cbd1ca;
  --accent: #245c3d;
  --accent-text: #f7faf7;
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Helvetica Neue", sans-serif;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }
.site-header,
main,
footer {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand {
  text-decoration: none;
  font-size: 1.06rem;
  font-weight: 760;
  letter-spacing: -.025em;
}
.status {
  color: var(--muted);
  font-size: .84rem;
}

.hero {
  min-height: calc(100dvh - 72px);
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(380px, 1.08fr);
  align-items: center;
  gap: clamp(40px, 7vw, 96px);
  padding: 56px 0 72px;
}
.hero-copy { max-width: 620px; }
.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: .78rem;
  font-weight: 730;
  letter-spacing: .14em;
}
h1 {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(2.7rem, 5.8vw, 5.35rem);
  line-height: 1.08;
  letter-spacing: -.055em;
  font-weight: 790;
}
.lead {
  margin: 28px 0 30px;
  max-width: 33rem;
  color: var(--muted);
  font-size: clamp(1.02rem, 1.5vw, 1.2rem);
}
.primary-link {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 23px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-text);
  text-decoration: none;
  font-weight: 700;
  transition: transform .2s ease, filter .2s ease;
}
.primary-link:hover { filter: brightness(.94); }
.primary-link:active { transform: translateY(1px) scale(.985); }
.primary-link:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent), transparent 58%); outline-offset: 4px; }
.hero-media {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  aspect-ratio: 4 / 5;
  background: var(--surface);
}
.hero-media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.coming {
  padding: 112px 0;
  border-top: 1px solid var(--line);
}
.section-heading { max-width: 680px; }
h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.75rem);
  line-height: 1.12;
  letter-spacing: -.045em;
}
.section-heading p {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}
.roadmap {
  margin-top: 64px;
  border-top: 1px solid var(--line);
}
.roadmap-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 28px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}
.roadmap-item > span {
  color: var(--accent);
  font-size: .8rem;
  font-variant-numeric: tabular-nums;
}
.roadmap-item h3 {
  margin: 0 0 6px;
  font-size: 1.24rem;
}
.roadmap-item p {
  margin: 0;
  max-width: 54ch;
  color: var(--muted);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .82rem;
}
footer p { margin: 0; }

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111512;
    --surface: #1b211c;
    --text: #edf2ed;
    --muted: #a9b2aa;
    --line: #343b35;
    --accent: #78ba8d;
    --accent-text: #102116;
  }
}

@media (max-width: 760px) {
  .site-header,
  main,
  footer { width: min(100% - 28px, 1180px); }
  .site-header { height: 64px; }
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 42px;
    padding: 56px 0 64px;
  }
  h1 { max-width: 11ch; font-size: clamp(2.6rem, 13vw, 4.3rem); }
  .lead { margin-top: 22px; }
  .hero-media { aspect-ratio: 5 / 4; }
  .coming { padding: 78px 0; }
  .roadmap { margin-top: 42px; }
  .roadmap-item { grid-template-columns: 44px 1fr; gap: 12px; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .primary-link { transition: none; }
}