/* Untapped Amps — shared site stylesheet. Structural/layout rules only;
   every color, font, radius and shadow comes from _ds/.../styles.css.
   Rhythm: 28px leading unit (17px body at ~1.65 leading), 14px half-step. */
:root {
  --color-bg: oklch(from #161826 calc(l + 0.09) c h);
  --leading: 28px;
  --half: 14px;
  --edge: clamp(20px, 5vw, 72px);
  --measure: 58ch;
}
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background:
    radial-gradient(1200px 720px at 82% -160px,
      color-mix(in srgb, var(--color-accent-900) 75%, transparent), transparent 60%),
    radial-gradient(1100px 800px at -10% 100%,
      color-mix(in srgb, black 30%, transparent), transparent 55%),
    var(--color-bg);
  text-wrap: pretty;
}
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 var(--edge); }
.nav { padding-inline: max(var(--edge), calc((100% - 1200px) / 2 + var(--edge))); position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(10px); background: color-mix(in srgb, var(--color-bg) 78%, transparent); }
.nav a { white-space: nowrap; }
.nav a[aria-current='page'] { color: var(--color-accent); }
@media (max-width: 640px) { .nav .nav-links { display: none; } }

.rule { height: 1px; border: 0; margin: 0;
  background: linear-gradient(to right, transparent, var(--color-divider) 48px calc(100% - 48px), transparent); }

.kicker {
  position: relative; display: block;
  font-size: 13px; line-height: var(--half); letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--color-accent); font-feature-settings: "tnum" 1;
  margin: 0 0 calc(var(--leading) - var(--half));
}
.kicker::before { content: ""; position: absolute; left: -64px; top: calc(50% - 0.5px);
  width: 44px; height: 1px; background: var(--color-accent); }
@media (max-width: 1280px) { .kicker::before { display: none; } }

/* — hero — */
.hero { padding: calc(3.5 * var(--leading)) 0 calc(3 * var(--leading)); }
.display {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: clamp(38px, 5.6vw, 76px);
  line-height: clamp(43px, 6.2vw, 84px);
  letter-spacing: -0.015em; margin: 0; margin-left: -0.06em;
  text-box: trim-both cap alphabetic;
}
.display .line { display: block; }
.hero .sub, .page-head .sub { font-size: 18px; line-height: var(--leading); max-width: var(--measure);
  margin: calc(1.5 * var(--leading) - 1cap) 0 0; color: var(--color-text);
  text-box: trim-both cap alphabetic; }
.hero .row, .page-head .row { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: var(--leading); }

/* — plain page header (Products / Benefits) — */
.page-head { padding: calc(2.5 * var(--leading)) 0 calc(2 * var(--leading)); }
.page-head h1 { font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: clamp(32px, 4.4vw, 52px); line-height: calc(1.4 * var(--leading));
  letter-spacing: -0.015em; margin: 0; text-box: trim-both cap alphabetic; }

/* — generic section spacing — */
.section { padding: calc(2.5 * var(--leading)) 0; }
.section-tight { padding: calc(1.5 * var(--leading)) 0; }
.section h2 { font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: clamp(26px, 3.2vw, 40px); line-height: calc(1.4 * var(--leading));
  letter-spacing: -0.012em; margin: 0; max-width: 24ch; text-box: trim-both cap alphabetic; }
.section .body-copy { font-size: 16.5px; line-height: var(--leading); max-width: var(--measure);
  color: color-mix(in srgb, var(--color-text) 82%, transparent);
  margin: var(--leading) 0 0; text-box: trim-both cap alphabetic; }
.section .body-copy + .body-copy { margin-top: var(--half); }

/* — numbered feature rows (How It Works / Products) — */
.feature { display: grid; grid-template-columns: minmax(56px, 120px) minmax(0, 340px) minmax(0, 1fr);
  gap: var(--leading) clamp(24px, 4vw, 64px); align-items: baseline;
  padding: calc(1.25 * var(--leading)) 0; }
.feature + .feature { position: relative; }
.feature + .feature::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(to right, transparent, var(--color-neutral-700) 48px calc(100% - 48px), transparent); }
.f-num { font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 15px; line-height: var(--leading); color: var(--color-accent);
  font-feature-settings: "tnum" 1; margin: 0; text-box: trim-both cap alphabetic; }
.f-title { font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 22px; line-height: var(--leading); letter-spacing: -0.01em;
  margin: 0; text-box: trim-both cap alphabetic; }
.f-copy { font-size: 15.5px; line-height: var(--leading); margin: 0;
  color: color-mix(in srgb, var(--color-text) 78%, transparent);
  max-width: 52ch; text-box: trim-both cap alphabetic; }
@media (max-width: 880px) {
  .feature { grid-template-columns: 1fr; gap: var(--half); }
  .f-copy { max-width: var(--measure); }
}

/* — tag row (financial framing checklist) — */
.tag-row { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--leading); }

/* — trust / imagery split — */
.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--leading) clamp(24px, 5vw, 96px); align-items: center;
  padding: calc(2 * var(--leading)) 0; }
.split-figure { margin: 0; }
.split-figure image-slot { width: 100%; aspect-ratio: 4 / 3; border-radius: var(--radius-md); }
@media (max-width: 720px) {
  .split { grid-template-columns: 1fr; }
  .split-figure { order: -1; }
}

/* — CTA split cards — */
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--leading); margin-top: var(--leading); }
@media (max-width: 880px) { .cta-grid { grid-template-columns: 1fr; } }
.cta-grid .card { display: flex; flex-direction: column; gap: var(--half); padding: var(--space-5); }
.cta-grid .card-body { max-width: 46ch; }
.cta-grid form { display: grid; gap: var(--space-2); margin-top: var(--space-2); }

/* — products page — */
.product-section + .product-section { position: relative; }
.product-section + .product-section::before { content: ""; display: block; height: 1px; margin-bottom: calc(2.5 * var(--leading));
  background: linear-gradient(to right, transparent, var(--color-divider) 48px calc(100% - 48px), transparent); }
.product-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--leading) clamp(24px, 5vw, 80px);
  align-items: start; padding: calc(1.5 * var(--leading)) 0; }
@media (max-width: 880px) { .product-grid { grid-template-columns: 1fr; } }
.product-grid .split-figure image-slot { aspect-ratio: 16 / 11; }

/* — benefits page cards — */
.benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--leading); margin-top: calc(1.5 * var(--leading)); }
@media (max-width: 960px) { .benefit-grid { grid-template-columns: 1fr; } }
.benefit-grid .card { display: flex; flex-direction: column; gap: var(--half); }
.benefit-grid ul { margin: 0; padding-left: 1.1em; display: grid; gap: var(--half); }
.benefit-grid li { font-size: 15.5px; line-height: var(--leading); color: color-mix(in srgb, var(--color-text) 82%, transparent); }

.bigpic { padding: calc(2.5 * var(--leading)) 0 calc(3 * var(--leading)); }
.bigpic blockquote { font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: clamp(22px, 2.4vw, 30px); line-height: calc(1.5 * var(--leading));
  letter-spacing: -0.01em; max-width: 42ch; margin: 0;
  text-indent: -0.474em; text-box: trim-both cap alphabetic; }
@media (max-width: 720px) { .bigpic blockquote { text-indent: 0; } }

/* — close — */
.close { padding: calc(2.5 * var(--leading)) 0 calc(2 * var(--leading)); }
.close h3 { font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 24px; line-height: var(--leading); margin: 0; text-box: trim-both cap alphabetic; }
.close .sub { font-size: 15.5px; line-height: var(--leading);
  color: color-mix(in srgb, var(--color-text) 78%, transparent);
  margin: calc(var(--leading) - 1cap) 0 0; max-width: var(--measure); text-box: trim-both cap alphabetic; }
.signup { display: flex; gap: var(--space-3); align-items: stretch; max-width: 480px; margin-top: var(--leading); }
.signup .input { flex: 1; }
.signup .input, .signup .btn { min-height: 36px; }

footer { padding: calc(2 * var(--leading)) 0; font-size: 13px; line-height: var(--leading);
  color: color-mix(in srgb, var(--color-text) 55%, transparent); }
footer .foot-row { display: flex; justify-content: space-between; gap: var(--leading); flex-wrap: wrap; }
footer a { color: color-mix(in srgb, var(--color-text) 68%, transparent); }

/* — scroll reveal — */
.reveal { opacity: 0; transform: translateY(26px);
  transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .08s; }
.reveal[data-delay="2"] { transition-delay: .16s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}