:root {
  --forest: #0B5D3B; --forest-tint: #E6F2EC;
  --bg: #FFFFFF; --bg-soft: #F4F7F5; --ink: #0F1A15; --muted: #5E6B65;
  --accent: var(--forest); --accent-ink: #FFFFFF; --line: rgba(15,26,21,.08); --spend: #B3261E;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000; --bg-soft: #111614; --ink: #F2F6F3; --muted: #93A29A;
    --accent: #3DB97C; --accent-ink: #062416; --line: rgba(242,246,243,.10); --forest-tint: #0F2A1D; --spend: #FF8A80;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 16px/1.65 Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.wrap { max-width: 720px; margin: 0 auto; padding: 0 24px; }
nav { position: sticky; top: 0; z-index: 10; backdrop-filter: saturate(160%) blur(14px); background: color-mix(in srgb, var(--bg) 78%, transparent); border-bottom: 1px solid var(--line); }
nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; max-width: 1120px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 18px; letter-spacing: -0.02em; }
.mark { width: 30px; height: 30px; border-radius: 9px; background: var(--accent); display: grid; place-items: center; color: var(--accent-ink); font-weight: 700; font-size: 16px; }
.btn { display: inline-flex; align-items: center; gap: 8px; height: 48px; padding: 0 22px; border-radius: 999px; font-weight: 600; font-size: 15px; border: 1.5px solid transparent; cursor: pointer; font-family: inherit; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:disabled { opacity: .6; cursor: default; }
.btn-ghost { border-color: var(--line); background: transparent; color: var(--ink); }
main { padding: 64px 0 96px; }
h1 { font-size: clamp(30px, 4vw, 42px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.1; margin: 0 0 10px; }
h2 { font-size: 20px; font-weight: 600; letter-spacing: -0.015em; margin: 36px 0 8px; }
p { margin: 0 0 14px; }
.muted { color: var(--muted); }
.lede { color: var(--muted); font-size: 17px; margin-bottom: 32px; }
label { display: block; font-weight: 500; font-size: 14px; margin: 18px 0 6px; }
input, textarea {
  width: 100%; font: inherit; color: var(--ink); background: var(--bg-soft); border: 1.5px solid transparent; border-radius: 14px; padding: 12px 14px; outline: none;
}
input:focus, textarea:focus { border-color: var(--accent); background: var(--bg); }
textarea { min-height: 160px; resize: vertical; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.status { margin-top: 16px; font-size: 15px; }
.status.err { color: var(--spend); }
.done { padding: 28px; border-radius: 20px; background: var(--forest-tint); }
.done h2 { margin-top: 0; }
ul { padding-left: 20px; }
li { margin-bottom: 6px; }
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; max-width: 1120px; }