:root {
  color-scheme: light;
  --paper: oklch(96% 0.009 105);
  --paper-deep: oklch(92% 0.014 105);
  --ink: oklch(21% 0.026 155);
  --muted: oklch(45% 0.025 140);
  --line: oklch(82% 0.018 112);
  --field: oklch(42% 0.088 156);
  --field-soft: oklch(86% 0.052 154);
  --amber: oklch(72% 0.12 72);
  --white-tint: oklch(99% 0.005 105);
  --danger-soft: oklch(92% 0.04 35);
  --shadow: 0 22px 60px oklch(25% 0.03 150 / 0.12);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 88% 10%, oklch(90% 0.05 150 / 0.7), transparent 28rem),
    linear-gradient(180deg, var(--paper), oklch(98% 0.006 100));
  color: var(--ink);
}

a {
  color: inherit;
}

.site-shell {
  min-height: 100vh;
}

.nav {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 760;
  letter-spacing: 0;
}

.mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, var(--amber) 0 10%, transparent 11%),
    conic-gradient(from 210deg, var(--field), var(--field-soft), var(--field));
  box-shadow: inset 0 0 0 1px oklch(25% 0.04 150 / 0.18);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  color: var(--muted);
  font-size: 14px;
}

.nav-links a {
  text-decoration: none;
  padding: 9px 12px;
  border-radius: 999px;
}

.nav-links a:hover {
  background: oklch(93% 0.018 115);
  color: var(--ink);
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--white-tint);
  text-decoration: none;
  font-weight: 720;
  box-shadow: 0 10px 25px oklch(20% 0.04 150 / 0.18);
}

.cta.secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  box-shadow: none;
}

.hero {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 72vh;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(330px, 0.95fr);
  align-items: center;
  gap: clamp(34px, 7vw, 92px);
  padding: clamp(28px, 6vw, 72px) 0 64px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--field);
  font-weight: 760;
  letter-spacing: 0.01em;
}

h1 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(48px, 8vw, 98px);
  line-height: 0.93;
  letter-spacing: 0;
}

.hero p {
  max-width: 650px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.58;
}

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

.signal-panel {
  position: relative;
  min-height: 520px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    linear-gradient(150deg, oklch(98% 0.008 110 / 0.92), oklch(89% 0.034 150 / 0.86)),
    var(--paper-deep);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.signal-panel svg {
  width: 100%;
  height: 100%;
  min-height: 520px;
  display: block;
}

.panel-note {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 24px;
  padding: 18px;
  border: 1px solid oklch(80% 0.025 130);
  border-radius: 18px;
  background: oklch(98% 0.008 110 / 0.86);
  backdrop-filter: blur(12px);
}

.panel-note strong {
  display: block;
  margin-bottom: 5px;
}

.panel-note span {
  color: var(--muted);
  line-height: 1.45;
}

.band {
  border-top: 1px solid var(--line);
  padding: clamp(58px, 8vw, 104px) 0;
}

.band-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.65fr);
  gap: 32px;
  align-items: end;
  margin-bottom: 42px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(34px, 5vw, 64px);
  line-height: 1.02;
  letter-spacing: 0;
}

.section-head p,
.text-block p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
  font-size: 17px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: 24px;
  overflow: hidden;
  background: oklch(98% 0.006 105);
}

.step {
  padding: 28px;
  min-height: 260px;
  border-right: 1px solid var(--line);
}

.step:last-child {
  border-right: 0;
}

.step-num {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--field);
  color: var(--white-tint);
  font-weight: 760;
  margin-bottom: 34px;
}

.step h3 {
  margin: 0 0 12px;
  font-size: 24px;
}

.step p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 0.78fr);
  gap: clamp(34px, 7vw, 90px);
  align-items: start;
}

.text-block h2 {
  margin: 0 0 18px;
  font-size: clamp(34px, 5vw, 60px);
  line-height: 1.03;
}

.principles {
  display: grid;
  gap: 14px;
}

.principle {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 20px;
  background: oklch(98% 0.006 105);
}

.principle strong {
  display: block;
  margin-bottom: 5px;
}

.principle span {
  color: var(--muted);
  line-height: 1.45;
}

.download-box {
  border-radius: 26px;
  border: 1px solid var(--line);
  background: var(--ink);
  color: var(--white-tint);
  padding: clamp(28px, 5vw, 48px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 26px;
  align-items: center;
}

.download-box p {
  margin: 10px 0 0;
  color: oklch(86% 0.018 130);
  line-height: 1.55;
}

.download-box .cta {
  background: var(--amber);
  color: oklch(18% 0.02 80);
  box-shadow: none;
}

.footer {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 54px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  justify-content: space-between;
  border-top: 1px solid var(--line);
}

.footer a {
  color: inherit;
}

.legal-page {
  width: min(820px, calc(100% - 32px));
  margin: 0 auto;
  padding: 52px 0 90px;
}

.legal-page h1 {
  font-size: clamp(40px, 6vw, 72px);
  margin-bottom: 24px;
}

.legal-page h2 {
  margin-top: 34px;
}

.legal-page p,
.legal-page li {
  color: var(--muted);
  line-height: 1.72;
  font-size: 17px;
}

.notice {
  padding: 18px 20px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: oklch(98% 0.006 105);
}

@media (max-width: 860px) {
  .nav {
    align-items: flex-start;
  }

  .nav-links {
    display: none;
  }

  .hero,
  .section-head,
  .split,
  .download-box {
    grid-template-columns: 1fr;
  }

  .signal-panel {
    min-height: 430px;
  }

  .signal-panel svg {
    min-height: 430px;
  }

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

  .step {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .step:last-child {
    border-bottom: 0;
  }
}