:root {
  --paper: #fbf8f1;
  --paper-raised: #ffffff;
  --ink: #1d2721;
  --ink-soft: #4b5750;
  --line: #e4ddcd;
  --green: #1f8f3a;
  --green-ink: #ffffff;
  --never: #ef4444;
  --fresh: #16a34a;
  --recent: #4ade80;
  --old: #bbf7d0;
  --old-stroke: #4d7c0f;
  --link: #1f6f34;
  --radius: 16px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #151a17;
    --paper-raised: #1d2420;
    --ink: #eef1ec;
    --ink-soft: #b4beb7;
    --line: #2d3631;
    --green: #2fb04f;
    --green-ink: #0d140f;
    --link: #7ad690;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--link);
  text-underline-offset: 2px;
}

.wrap {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */
.site-header {
  padding: 20px 0;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 700;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: #fff;
}

.site-header nav a {
  color: var(--ink-soft);
  text-decoration: none;
  margin-left: 18px;
  font-size: 0.95rem;
}

.site-header nav a:hover {
  color: var(--ink);
}

/* Hero */
.hero {
  padding: 32px 0 56px;
}

.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  line-height: 1.15;
  margin: 0 0 0.5em;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  letter-spacing: -0.01em;
}

.lede {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 34em;
  margin: 0 0 28px;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.button {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid var(--green);
}

.button.primary {
  background: var(--green);
  color: var(--green-ink);
}

.button.secondary {
  color: var(--ink);
}

.status-note {
  margin-top: 14px;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

/* Phone frame */
.phone {
  justify-self: center;
  width: min(300px, 80vw);
  border-radius: 34px;
  padding: 10px;
  background: #101412;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.18);
}

.phone img {
  border-radius: 26px;
}

/* Sections */
section {
  padding: 56px 0;
}

section.alt {
  background: var(--paper-raised);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

section h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.3rem);
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
  margin-top: 28px;
}

.feature h3 {
  font-size: 1.2rem;
}

.feature p {
  margin: 0;
  color: var(--ink-soft);
}

/* Freshness legend */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.legend {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
}

.legend li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
}

.dot {
  flex: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid rgba(0, 0, 0, 0.35);
}

.dot.never { background: var(--never); border-color: #991b1b; }
.dot.fresh { background: var(--fresh); border-color: #14532d; }
.dot.recent { background: var(--recent); border-color: #166534; }
.dot.old { background: var(--old); border-color: var(--old-stroke); }

.sheet-shot {
  justify-self: center;
  width: min(380px, 100%);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
}

/* About */
.about {
  max-width: 44em;
}

.disclaimer {
  margin-top: 20px;
  padding: 16px 18px;
  border-left: 4px solid var(--green);
  background: var(--paper-raised);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  padding: 32px 0 48px;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}

.site-footer a {
  color: var(--ink-soft);
  margin-right: 16px;
}

/* Long-form pages (privacy policy) */
.doc {
  max-width: 44em;
  padding-top: 16px;
  padding-bottom: 40px;
}

.doc h1 {
  font-size: clamp(2rem, 4.5vw, 2.6rem);
}

.doc h2 {
  font-size: 1.4rem;
  margin-top: 1.8em;
}

.doc .meta {
  color: var(--ink-soft);
  margin-top: 0;
}

.doc table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 0.95rem;
}

.doc th,
.doc td {
  text-align: left;
  vertical-align: top;
  padding: 10px 8px;
  border-bottom: 1px solid var(--line);
}

.doc .table-scroll {
  overflow-x: auto;
}

@media (max-width: 760px) {
  .hero .wrap,
  .split {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .hero {
    padding-top: 8px;
  }

  .site-header nav a {
    margin-left: 12px;
  }
}