:root {
  --bg: #0e1726;
  --bg-soft: #142033;
  --card: #172235;
  --surface: #101b2c;
  --ink: #f6f8fb;
  --muted: #b8c4d4;
  --quiet: #7f8da1;
  --brand: #34c77b;
  --brand-dark: #153a2a;
  --teal: #55c2d8;
  --amber: #f2b84b;
  --coral: #ef716d;
  --ring: #2a384d;
  --shadow: rgba(0, 0, 0, .28);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 system-ui, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

a {
  color: inherit;
}

.shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in oklab, var(--bg) 88%, black);
  border-bottom: 1px solid color-mix(in oklab, var(--ring) 72%, transparent);
  backdrop-filter: blur(14px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 0;
}

.logo {
  width: auto;
  height: 54px;
  display: block;
}

.navlinks,
.actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1px solid var(--ring);
  border-radius: 8px;
  background: color-mix(in oklab, var(--surface) 92%, white);
  color: var(--ink);
  text-decoration: none;
  font-weight: 750;
  line-height: 1;
  transition: transform .16s ease, border-color .16s ease, background .16s ease;
}

.btn:hover {
  transform: translateY(-1px);
  border-color: color-mix(in oklab, var(--teal) 50%, var(--ring));
}

.btn-primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #07140d;
}

.btn-secondary {
  background: color-mix(in oklab, var(--teal) 24%, var(--surface));
  border-color: color-mix(in oklab, var(--teal) 50%, var(--ring));
}

.hero {
  position: relative;
  isolation: isolate;
  min-height: min(760px, calc(100svh - 75px));
  display: grid;
  align-items: end;
  padding: 92px 0 52px;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(14, 23, 38, .98) 0%, rgba(14, 23, 38, .84) 44%, rgba(14, 23, 38, .44) 100%),
    linear-gradient(180deg, rgba(14, 23, 38, .10), var(--bg)),
    var(--hero-image, url("images/mockup-desktop.png")) center right / min(980px, 86vw) auto no-repeat,
    radial-gradient(circle at 76% 22%, rgba(85, 194, 216, .18), transparent 34%),
    var(--bg);
}

.hero-copy {
  max-width: 720px;
}

.eyebrow {
  color: var(--teal);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 12px 0 16px;
  max-width: 760px;
  font-size: clamp(42px, 7.2vw, 78px);
  line-height: .97;
  letter-spacing: 0;
}

.lead {
  max-width: 650px;
  margin: 0 0 22px;
  color: #d8e1ec;
  font-size: clamp(18px, 2.25vw, 23px);
  line-height: 1.42;
}

.proof {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.proof span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 11px;
  border: 1px solid color-mix(in oklab, var(--ring) 75%, transparent);
  border-radius: 999px;
  background: rgba(16, 27, 44, .72);
  color: #d8e1ec;
  font-size: 14px;
  backdrop-filter: blur(10px);
}

.section {
  padding: 56px 0;
  border-top: 1px solid color-mix(in oklab, var(--ring) 65%, transparent);
}

.section h2 {
  max-width: 760px;
  margin: 0 0 12px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.08;
}

.section-lead {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.preview-grid {
  display: grid;
  grid-template-columns: minmax(0, .96fr) minmax(300px, .74fr);
  gap: 18px;
  align-items: start;
}

.product-shot {
  width: 100%;
  display: block;
  border: 1px solid var(--ring);
  border-radius: 8px;
  box-shadow: 0 22px 70px var(--shadow);
}

.forecast-card {
  display: grid;
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--ring);
  border-radius: 8px;
  background: color-mix(in oklab, var(--card) 90%, var(--teal));
  box-shadow: 0 18px 60px var(--shadow);
}

.forecast-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-number {
  display: grid;
  gap: 2px;
  padding: 14px;
  border: 1px solid color-mix(in oklab, var(--brand) 40%, var(--ring));
  border-radius: 8px;
  background: color-mix(in oklab, var(--brand-dark) 62%, var(--surface));
}

.hero-number span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.hero-number strong {
  color: var(--brand);
  font-size: clamp(30px, 4vw, 42px);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.mini-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  min-height: 52px;
  padding: 10px 12px;
  border: 1px solid color-mix(in oklab, var(--ring) 82%, transparent);
  border-radius: 8px;
  background: var(--surface);
}

.mini-row span:first-child {
  color: var(--quiet);
  font-weight: 800;
}

.mini-row span:nth-child(2) {
  min-width: 0;
  color: #dbe4ef;
}

.mini-row strong {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.safe {
  color: var(--brand);
}

.warn {
  color: var(--amber);
}

.bad {
  color: var(--coral);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.card {
  min-height: 164px;
  padding: 18px;
  border: 1px solid var(--ring);
  border-radius: 8px;
  background: var(--card);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 19px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.step {
  min-height: 128px;
  padding: 16px;
  border: 1px solid var(--ring);
  border-radius: 8px;
  background: var(--surface);
}

.step b {
  display: block;
  margin-bottom: 8px;
  color: var(--teal);
}

.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 28px;
  border: 1px solid color-mix(in oklab, var(--brand) 28%, var(--ring));
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(52, 199, 123, .17), rgba(85, 194, 216, .08)),
    var(--card);
}

.cta-band h2,
.cta-band p {
  margin: 0;
}

.cta-band p {
  margin-top: 6px;
  color: var(--muted);
}

.footer {
  border-top: 1px solid var(--ring);
  padding: 22px 0;
  color: var(--muted);
}

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

  .logo {
    height: 44px;
  }

  .hero {
    min-height: auto;
    padding: 62px 0 42px;
    background:
      linear-gradient(180deg, rgba(14, 23, 38, .86), var(--bg)),
      var(--hero-image, url("images/mockup-mobile.png")) top right / 82vw auto no-repeat,
      var(--bg);
  }

  .hero-copy {
    padding-top: 160px;
  }

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

@media (max-width: 560px) {
  .shell {
    padding: 0 14px;
  }

  .nav {
    display: grid;
  }

  .navlinks .btn,
  .actions .btn {
    flex: 1 1 auto;
  }

  h1 {
    font-size: 42px;
  }

  .hero-copy {
    padding-top: 130px;
  }

  .mini-row {
    grid-template-columns: 1fr;
  }

  .cta-band {
    padding: 20px;
  }
}