:root {
  color-scheme: light;
  --ink: #18332c;
  --muted: #61726d;
  --paper: #fbfaf5;
  --card: #ffffff;
  --mint: #2f9d78;
  --mint-dark: #19634d;
  --peach: #f3a36c;
  --line: #dfe8e3;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 8% 5%, rgba(243, 163, 108, .18), transparent 30rem),
    radial-gradient(circle at 92% 18%, rgba(47, 157, 120, .16), transparent 34rem),
    var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a { color: var(--mint-dark); }

.shell { width: min(1120px, calc(100% - 2rem)); margin: 0 auto; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
}

.brand { color: var(--ink); font-size: 1.45rem; font-weight: 850; text-decoration: none; letter-spacing: -.04em; }
.brand-mark { color: var(--mint); }
.nav { display: flex; gap: 1.25rem; font-size: .94rem; }
.nav a { color: var(--muted); text-decoration: none; }

.hero { padding: 5.5rem 0 4rem; display: grid; grid-template-columns: 1.15fr .85fr; gap: 3rem; align-items: center; }
.eyebrow { color: var(--mint-dark); font-size: .78rem; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; }
h1 { max-width: 12ch; margin: .55rem 0 1.25rem; font-size: clamp(3rem, 8vw, 6.25rem); line-height: .94; letter-spacing: -.065em; }
.lede { max-width: 42rem; color: var(--muted); font-size: clamp(1.06rem, 2vw, 1.28rem); }
.actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.button { display: inline-block; border-radius: 999px; padding: .85rem 1.2rem; background: var(--mint-dark); color: white; font-weight: 750; text-decoration: none; }
.button.secondary { background: transparent; border: 1px solid var(--line); color: var(--ink); }

.balance-card { border: 1px solid var(--line); border-radius: 2rem; padding: 1.5rem; background: rgba(255,255,255,.82); box-shadow: 0 22px 65px rgba(24,51,44,.11); transform: rotate(2deg); }
.balance-card h2 { margin: 0 0 .2rem; font-size: 1rem; color: var(--muted); }
.balance { margin: 0 0 1.2rem; font-size: 2.4rem; font-weight: 850; letter-spacing: -.05em; }
.person { display: flex; justify-content: space-between; gap: 1rem; padding: .9rem 0; border-top: 1px solid var(--line); }
.owed { color: var(--mint-dark); font-weight: 750; }
.owe { color: #ad5b32; font-weight: 750; }

.section { padding: 4.5rem 0; }
.section h2, .page h1 { max-width: none; margin: 0 0 1rem; font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1; letter-spacing: -.045em; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem; }
.feature { min-height: 13rem; padding: 1.4rem; border: 1px solid var(--line); border-radius: 1.4rem; background: var(--card); }
.feature span { display: inline-flex; width: 2.3rem; height: 2.3rem; align-items: center; justify-content: center; border-radius: .8rem; background: #e3f3ed; color: var(--mint-dark); font-weight: 850; }
.feature h3 { margin: 1rem 0 .4rem; font-size: 1.15rem; }
.feature p { color: var(--muted); margin: 0; }

.page { max-width: 780px; padding: 4rem 0 6rem; }
.page h2 { margin-top: 2.2rem; }
.notice { margin: 1.5rem 0; padding: 1rem 1.1rem; border-left: 4px solid var(--peach); border-radius: .5rem; background: #fff2e8; }
.metadata { color: var(--muted); font-size: .9rem; }

footer { border-top: 1px solid var(--line); padding: 2rem 0 3rem; color: var(--muted); font-size: .9rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: .4rem; }

@media (max-width: 760px) {
  .nav { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 3rem; }
  .balance-card { transform: none; }
  .grid { grid-template-columns: 1fr; }
}