:root {
  color-scheme: light;
  --ink: #1d2433;
  --muted: #637083;
  --line: #d9e0e8;
  --paper: #f8faf7;
  --panel: #ffffff;
  --teal: #2d8c8c;
  --rose: #d66f86;
  --sun: #e4b04b;
  --shadow: 0 18px 50px rgba(35, 45, 58, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, "Noto Sans TC", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

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

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 22px 28px;
}

.brand,
.site-header nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
}

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

.site-header nav {
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(320px, 0.96fr);
  align-items: center;
  gap: 48px;
  max-width: 1120px;
  min-height: calc(100svh - 84px);
  margin: 0 auto;
  padding: 34px 28px 80px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(42px, 7vw, 78px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.lead {
  max-width: 620px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.actions,
.cta-band {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 800;
}

.button.primary {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.62);
}

.phone-stage {
  display: grid;
  place-items: center;
  min-height: 560px;
  border-radius: 8px;
  background:
    linear-gradient(120deg, rgba(45, 140, 140, 0.18), transparent 42%),
    linear-gradient(300deg, rgba(214, 111, 134, 0.18), transparent 50%),
    #edf3f0;
}

.phone {
  width: min(78vw, 340px);
  padding: 12px;
  border: 1px solid rgba(29, 36, 51, 0.18);
  border-radius: 34px;
  background: #17202c;
  box-shadow: var(--shadow);
}

.phone-top {
  width: 76px;
  height: 6px;
  margin: 4px auto 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.28);
}

.screen {
  min-height: 520px;
  overflow: hidden;
  border-radius: 24px;
  background: linear-gradient(#fbfdfb, #eef6f2);
  padding: 18px;
}

.screen-header {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 13px;
}

.screen-header strong {
  color: var(--ink);
}

.event-card {
  margin: 26px 0 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.pill {
  display: inline-block;
  margin-bottom: 14px;
  padding: 5px 9px;
  border-radius: 999px;
  background: rgba(228, 176, 75, 0.22);
  color: #8b6120;
  font-size: 12px;
  font-weight: 800;
}

.event-card h2 {
  margin-bottom: 8px;
  font-size: 25px;
}

.event-card p,
.feature-grid p {
  color: var(--muted);
  line-height: 1.65;
}

.map-preview {
  position: relative;
  height: 180px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(29, 36, 51, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(29, 36, 51, 0.06) 1px, transparent 1px),
    #f5f7f3;
  background-size: 34px 34px;
}

.pin {
  position: absolute;
  width: 22px;
  height: 22px;
  border: 4px solid #fff;
  border-radius: 999px;
  box-shadow: 0 6px 18px rgba(29, 36, 51, 0.16);
}

.pin.one {
  top: 42px;
  left: 70px;
  background: var(--teal);
}

.pin.two {
  right: 60px;
  top: 74px;
  background: var(--rose);
}

.pin.three {
  left: 132px;
  bottom: 38px;
  background: var(--sun);
}

.privacy-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 14px;
}

.privacy-strip span {
  padding: 9px 7px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-size: 12px;
  font-weight: 800;
  text-align: center;
}

.section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 88px 28px;
}

.section-heading {
  max-width: 680px;
  margin-bottom: 28px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-grid article {
  min-height: 240px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
}

.icon {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  margin-bottom: 20px;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 48px;
  align-items: start;
}

.timeline {
  display: grid;
  gap: 12px;
}

.timeline div {
  display: grid;
  grid-template-columns: 44px 1fr;
  align-items: center;
  min-height: 64px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.timeline strong {
  color: var(--teal);
}

.timeline span {
  color: var(--ink);
  font-weight: 700;
}

.use-cases {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(360px, 1.25fr);
  gap: 36px;
  align-items: start;
}

.use-case-grid {
  display: grid;
  gap: 12px;
}

.use-case-grid article {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.use-case-grid p {
  color: var(--muted);
  line-height: 1.7;
}

.cta-band {
  justify-content: space-between;
  max-width: 1064px;
  margin: 36px auto 96px;
  padding: 34px;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
}

.cta-band h2 {
  max-width: 620px;
  margin-bottom: 0;
  font-size: clamp(28px, 4vw, 42px);
}

.cta-band .button.primary {
  border-color: #fff;
  background: #fff;
  color: var(--ink);
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-header nav {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
    font-size: 13px;
  }

  .hero,
  .split,
  .feature-grid,
  .use-cases {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 28px;
  }

  .phone-stage {
    min-height: auto;
    padding: 34px 0;
  }

  .section {
    padding: 64px 28px;
  }

  .cta-band {
    margin-inline: 28px;
  }
}

@media (max-width: 520px) {
  h1 {
    font-size: 42px;
  }

  .privacy-strip {
    grid-template-columns: 1fr;
  }

  .site-header nav a {
    max-width: 32%;
  }
}