:root {
  --bg: #f7f6f2; --fg: #1d1d1b; --muted: #5d5c57; --card: #ffffff; --line: #dedcd4;
  --accent: #1f5f4a; --accent-fg: #ffffff; --warn: #9a3412;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #151514; --fg: #ecebe6; --muted: #a9a8a1; --card: #1f1f1d; --line: #34332f; --accent: #5fb394; --accent-fg: #0d1f18; --warn: #fb923c; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); line-height: 1.55; }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 48px; }
.brand { font-weight: 700; letter-spacing: .02em; margin: 0 0 12px; }
.tag { font-size: .75rem; font-weight: 600; border: 1px solid var(--line); border-radius: 999px; padding: 2px 8px; margin-left: 6px; color: var(--muted); }
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.15; margin: 0 0 12px; }
h2 { font-size: 1.3rem; margin: 0 0 12px; }
.lede { font-size: 1.1rem; color: var(--muted); max-width: 640px; }
main > section { margin: 32px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
fieldset { border: 0; padding: 0; margin: 0 0 16px; }
legend { font-weight: 600; margin-bottom: 8px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
label { display: flex; flex-direction: column; font-size: .9rem; gap: 4px; }
input, select { font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--fg); }
button, .button { display: inline-block; font: inherit; font-weight: 600; background: var(--accent); color: var(--accent-fg); border: 0; border-radius: 8px; padding: 10px 18px; cursor: pointer; text-decoration: none; }
.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
button:disabled { opacity: .6; cursor: default; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.hint { color: var(--muted); font-size: .85rem; }
.result { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 16px; }
.big { font-size: 1.5rem; font-weight: 700; margin: 0 0 4px; }
.error { color: var(--warn); }
.points li { margin-bottom: 8px; }
.tiers { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.tier { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; display: flex; flex-direction: column; }
.tier ul { padding-left: 18px; flex: 1; }
.price { font-size: 1.2rem; font-weight: 700; margin: 0; }
.costguard { border-style: dashed; }
footer { padding: 24px 16px 48px; color: var(--muted); font-size: .85rem; }
footer a { color: inherit; }
.cg-cta { margin-top: 8px; text-align: center; }
.honesty { font-weight: 600; }