:root {
  color-scheme: light;
  --bg: #ffffff;
  --text: #17201f;
  --muted: #5f6f6b;
  --line: #dbe5e2;
  --soft: #f4f8f7;
  --accent: #0f766e;
  --accent-strong: #0b5f59;
  --amber: #b7791f;
  --shadow: 0 18px 60px rgba(15, 118, 110, 0.12);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(219, 229, 226, 0.86);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  font-weight: 780;
  text-decoration: none;
  color: var(--text);
}

nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 14px;
}

nav a,
.site-footer a,
.secondary-link {
  text-decoration: none;
}

.header-cta {
  justify-self: end;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 14px;
  color: var(--accent-strong);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.72fr);
  gap: clamp(28px, 6vw, 84px);
  align-items: center;
  min-height: clamp(460px, 68svh, 620px);
  padding: clamp(52px, 7vw, 108px) clamp(20px, 5vw, 72px) clamp(42px, 5vw, 72px);
}

.hero-copy {
  max-width: 780px;
}

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

h1 {
  margin-bottom: 24px;
  font-size: clamp(42px, 7vw, 84px);
  line-height: 1.02;
  font-weight: 820;
  letter-spacing: 0;
}

.hero-copy p {
  max-width: 650px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  padding: 12px 18px;
  font-weight: 760;
  text-decoration: none;
  box-shadow: 0 10px 26px rgba(15, 118, 110, 0.22);
}

.secondary-link {
  color: var(--accent-strong);
  font-weight: 720;
}

.launch-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  padding: clamp(22px, 3vw, 34px);
  box-shadow: var(--shadow);
}

.panel-topline {
  margin-bottom: 18px;
  color: var(--amber);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.launch-panel ul {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.launch-panel li {
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
  color: var(--text);
  font-weight: 680;
}

.launch-panel li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.section-block,
.process,
.faq {
  padding: clamp(56px, 8vw, 104px) clamp(20px, 5vw, 72px);
}

.section-intro {
  max-width: 760px;
  margin-bottom: 34px;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.12;
  letter-spacing: 0;
}

.section-intro p,
.feature p,
.faq p,
.process li {
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature {
  min-height: 220px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  background: #fff;
}

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

.process {
  background: var(--soft);
}

.process ol {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.process li {
  min-height: 160px;
  border-top: 2px solid var(--accent);
  padding-top: 18px;
  font-weight: 650;
}

.process span {
  display: block;
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 820;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 900px;
}

details {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 20px;
  background: #fff;
}

summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  cursor: pointer;
  font-weight: 760;
  outline: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "+";
  display: inline-grid;
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent);
  font-weight: 780;
}

details[open] summary::after {
  content: "-";
}

summary:focus-visible {
  border-radius: 6px;
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.16);
}

details p {
  margin: 14px 0 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(20px, 5vw, 72px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.site-footer nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.version {
  font-size: 13px;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--accent);
  font-weight: 660;
}

.not-found {
  display: grid;
  min-height: 100svh;
  place-items: center;
}

.not-found-box {
  max-width: 520px;
  padding: 32px;
  text-align: center;
}

@media (max-width: 860px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  nav {
    grid-column: 1 / -1;
    justify-content: flex-start;
    order: 3;
  }

  .hero,
  .feature-grid,
  .process ol {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .process li {
    min-height: auto;
  }
}

@media (max-width: 520px) {
  .site-header {
    gap: 12px;
  }

  .header-cta {
    padding: 8px 10px;
  }

  nav {
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 2px;
  }
}