:root {
  --bg: #f6f7f4; --surface: #ffffff; --ink: #1d2320; --muted: #5d6762; --line: #dfe3de;
  --brand: #1f6f54; --brand-ink: #ffffff; --brand-soft: #e3f1ea;
  --warn: #9a5b00; --warn-soft: #fff4df; --good: #1f6f54; --good-soft: #e3f1ea;
  --bad: #b3261e; --focus: #2563eb; --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121614; --surface: #1b201d; --ink: #e8ece9; --muted: #a3ada7; --line: #2f3632;
    --brand: #4fbf93; --brand-ink: #0d1f17; --brand-soft: #1d3329;
    --warn: #f2b45a; --warn-soft: #33281a; --good: #4fbf93; --good-soft: #1d3329; --bad: #ff8a80;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.skip { position: absolute; left: -999px; } .skip:focus { left: 8px; top: 8px; background: var(--surface); padding: 8px; z-index: 9; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
h1 { font-size: clamp(1.6rem, 5vw, 2.4rem); line-height: 1.15; margin: 8px 0 12px; letter-spacing: -0.02em; }
h2 { font-size: 1.3rem; margin: 0 0 6px; } h3 { font-size: 1.05rem; margin: 22px 0 8px; }

.top { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px; max-width: 760px; margin: 0 auto; }
.brand { color: var(--ink); text-decoration: none; font-size: 1.05rem; display: flex; align-items: center; gap: 8px; }
.brand b { color: var(--brand); } .mark { background: var(--brand); color: var(--brand-ink); border-radius: 8px; width: 28px; height: 28px; display: grid; place-items: center; font-size: 15px; }
.free { font-size: .85rem; color: var(--muted); }
main { max-width: 760px; margin: 0 auto; padding: 4px 16px 40px; }
main:focus { outline: none; }

.hero p { color: var(--muted); font-size: 1.08rem; max-width: 36em; margin: 0 0 20px; }
.cards { display: grid; gap: 12px; }
@media (min-width: 680px) { .cards { grid-template-columns: repeat(3, 1fr); } }
.card { text-align: left; font: inherit; color: inherit; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; cursor: pointer; display: flex; flex-direction: column; gap: 6px; min-height: 44px; transition: border-color .15s, transform .15s; }
.card:hover { border-color: var(--brand); transform: translateY(-1px); }
.card strong { font-size: 1.08rem; } .card span:last-child { color: var(--muted); font-size: .95rem; }
.num { background: var(--brand-soft); color: var(--brand); border-radius: 999px; width: 28px; height: 28px; display: grid; place-items: center; font-weight: 700; font-size: .9rem; }
.explain { margin: 22px 0 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 16px; }
.explain summary { cursor: pointer; font-weight: 600; min-height: 32px; display: flex; align-items: center; }
.privacy, .hint { color: var(--muted); font-size: .92rem; }

.back { background: none; border: 0; color: var(--brand); font: inherit; padding: 8px 0; cursor: pointer; min-height: 44px; }
form { display: grid; gap: 14px; }
fieldset { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); padding: 14px 16px; margin: 0; min-width: 0; }
fieldset[hidden], [hidden] { display: none !important; }
legend { font-weight: 650; padding: 0 6px; margin-left: -6px; }
.grid { display: grid; gap: 12px; } @media (min-width: 560px) { .grid { grid-template-columns: 1fr 1fr; } }
.grid.small { gap: 8px; }
label { display: grid; gap: 4px; font-weight: 550; font-size: .95rem; }
label small { font-weight: 400; color: var(--muted); font-size: .82rem; }
input, select, textarea { font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; min-height: 44px; width: 100%; }
textarea { line-height: 1.45; resize: vertical; }
input[aria-invalid="true"], select[aria-invalid="true"] { border-color: var(--bad); box-shadow: 0 0 0 1px var(--bad); }
.choice, .check { display: flex; align-items: center; gap: 10px; font-weight: 450; min-height: 40px; }
.choice { display: inline-flex; margin-right: 18px; }
.choice input, .check input { width: 20px; height: 20px; min-height: 0; accent-color: var(--brand); flex: none; }

button.primary, button.secondary { font: inherit; font-weight: 600; border-radius: 12px; padding: 12px 18px; min-height: 48px; cursor: pointer; }
.primary { background: var(--brand); color: var(--brand-ink); border: 0; }
.secondary { background: var(--surface); color: var(--brand); border: 1px solid var(--brand); }
.row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 10px; }

.result { margin-top: 24px; } .result:focus { outline: none; }
.verdict { border-radius: var(--radius); padding: 18px; border: 1px solid; }
.verdict.good { background: var(--good-soft); border-color: var(--good); }
.verdict.warn { background: var(--warn-soft); border-color: var(--warn); }
.verdict.warn h2 { color: var(--warn); } .verdict.good h2 { color: var(--good); }
.nums { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.nums.one { grid-template-columns: 1fr; }
.nums div { background: var(--surface); border-radius: 10px; padding: 10px 12px; }
.nums small { display: block; color: var(--muted); font-size: .8rem; } .nums b { font-size: 1.2rem; }
.note { background: var(--surface); border-left: 4px solid var(--warn); padding: 10px 12px; border-radius: 6px; }
.steps { padding-left: 1.3em; margin: 0 0 12px; } .steps li { margin: 6px 0; }
.flags { list-style: none; padding: 0; display: grid; gap: 8px; margin-top: 12px; }
.flags li { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--warn); border-radius: 8px; padding: 10px 12px; }
.letter { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 4px 16px 16px; margin-top: 18px; }
.letter textarea { margin-top: 10px; font-size: .95rem; }
.feedback { display: flex; align-items: center; gap: 8px; margin-top: 18px; color: var(--muted); flex-wrap: wrap; }
.chip { font: inherit; background: var(--surface); color: var(--ink); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; min-height: 40px; cursor: pointer; }

#lines { display: grid; gap: 10px; }
.line { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 44px 12px 40px; }
.line .wide { grid-column: 1 / -1; }
.ln { position: absolute; left: 12px; top: 14px; color: var(--muted); font-weight: 700; }
.remove { position: absolute; right: 6px; top: 6px; width: 36px; height: 36px; border: 0; background: none; color: var(--muted); font-size: 22px; cursor: pointer; border-radius: 8px; }
@media (min-width: 720px) { .line { grid-template-columns: 9.5em 6em 1fr 4em 7em; } .line .wide { grid-column: auto; } }
.total { max-width: 16em; }

footer { max-width: 760px; margin: 0 auto; padding: 20px 16px 40px; color: var(--muted); font-size: .85rem; border-top: 1px solid var(--line); }
.noscript { padding: 16px; text-align: center; }