:root {
  --bg: #f4f7f1;
  --card: #ffffff;
  --ink: #1d2b1f;
  --muted: #5b6b5d;
  --green: #2f7d43;
  --green-dark: #22603a;
  --leaf: #dcebd6;
  --line: #d9e3d4;
  --danger: #b3261e;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111a13; --card: #1a261c; --ink: #e5efe3; --muted: #9fb3a1;
    --green: #5fbf74; --green-dark: #7fd492; --leaf: #233629; --line: #2c3f30;
    --danger: #f2a39d;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.topbar {
  display: flex; flex-wrap: wrap; gap: .75rem; justify-content: space-between; align-items: center;
  padding: 1rem clamp(1rem, 4vw, 3rem); border-bottom: 1px solid var(--line); background: var(--card);
  position: sticky; top: 0; z-index: 2;
}
.brand { font-weight: 700; font-size: 1.15rem; color: var(--ink); text-decoration: none; }
.counters { display: flex; gap: 1.25rem; flex-wrap: wrap; color: var(--muted); font-size: .95rem; }
.counters strong { color: var(--green); font-variant-numeric: tabular-nums; }
main { max-width: 1100px; margin: 0 auto; padding: 2rem clamp(1rem, 4vw, 3rem) 4rem; }
.view.narrow { max-width: 640px; margin: 0 auto; }
.hero { text-align: center; }
.eyebrow { color: var(--green); font-weight: 600; letter-spacing: .08em; text-transform: uppercase; font-size: .8rem; margin: 2rem 0 .5rem; }
h1 { font-size: clamp(1.8rem, 4.5vw, 3rem); line-height: 1.15; margin: .25rem 0 .75rem; }
h2 { font-size: 1.25rem; margin: 0 0 1rem; }
.lede { color: var(--muted); font-size: 1.1rem; max-width: 46rem; margin: 0 auto 1.5rem; }
.view:not(.hero) .lede { margin-left: 0; }
button { font: inherit; cursor: pointer; }
.cta {
  background: var(--green); color: #fff; border: 0; border-radius: 999px;
  padding: .9rem 2rem; font-size: 1.1rem; font-weight: 600;
  box-shadow: 0 6px 18px rgb(47 125 67 / .25); transition: transform .1s, background .2s;
}
@media (prefers-color-scheme: dark) { .cta { color: #0d1a10; } }
.cta:hover { background: var(--green-dark); transform: translateY(-1px); }
.cta:disabled { opacity: .6; cursor: wait; }
.ghost { background: transparent; border: 1px solid var(--line); color: var(--ink); border-radius: 999px; padding: .9rem 1.6rem; }
.back { background: none; border: 0; color: var(--green); padding: 0; margin-bottom: 1rem; font-weight: 600; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem;
  text-align: left;
}
button.card { width: 100%; color: inherit; transition: border-color .15s, transform .1s; }
button.card:hover { border-color: var(--green); transform: translateY(-2px); }
.region-emoji { font-size: 2rem; }
.card h3 { margin: .25rem 0 .35rem; font-size: 1.15rem; }
.card p { margin: 0; color: var(--muted); }
.sci { font-style: italic; color: var(--muted); font-size: .9rem; margin-bottom: .75rem !important; }
.facts { display: flex; flex-wrap: wrap; gap: .4rem; margin: .75rem 0; }
.chip { background: var(--leaf); border-radius: 999px; padding: .2rem .65rem; font-size: .82rem; }
.chip.co2 { background: var(--green); color: #fff; font-weight: 600; }
@media (prefers-color-scheme: dark) { .chip.co2 { color: #0d1a10; } }
.benefits { margin: .5rem 0 1rem; padding-left: 1.1rem; color: var(--ink); }
.benefits li { margin: .15rem 0; }
.saplings .card { display: flex; flex-direction: column; }
.saplings .card .cta { margin-top: auto; font-size: 1rem; padding: .7rem 1.2rem; }
.form { display: grid; gap: 1rem; }
.form label { display: grid; gap: .35rem; font-weight: 600; }
.form input {
  font: inherit; padding: .7rem .9rem; border-radius: 10px; border: 1px solid var(--line);
  background: var(--bg); color: var(--ink);
}
.error { color: var(--danger); margin: 0; }
.big-emoji { font-size: 5rem; margin-top: 2rem; animation: grow .7s ease-out; }
@keyframes grow { from { transform: scale(.2); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.actions { display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; }
.forest-wrap { margin-top: 4rem; text-align: left; }
.forest { list-style: none; padding: 0; margin: 0; display: grid; gap: .75rem; grid-template-columns: repeat(auto-fill, minmax(min(100%, 240px), 1fr)); }
.forest li { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: .9rem 1rem; }
.forest .who { font-weight: 600; }
.forest .what, .forest .when { color: var(--muted); font-size: .88rem; }
.forest .msg { margin-top: .35rem; }
.empty { color: var(--muted); }
footer { text-align: center; color: var(--muted); font-size: .85rem; padding: 0 1rem 2rem; }