:root {
  --green: #2d6a4f; --green-2: #52b788; --mint: #d8f3dc; --mist: #f0faf3;
  --bg: #f0faf3; --surface: #ffffff; --ink: #1b2a22; --ink-dim: #52615a; --line: #d8e7dd;
  --amber: #e9a23b; --red: #c8553d; --on-green: #ffffff;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1a15; --surface: #16251e; --ink: #e8f2ec; --ink-dim: #a7bbb0; --line: #24382e;
    --mint: #1f3a2d; --mist: #132119; --green: #74c69d; --on-green: #0f1a15;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--green); }
.top { position: sticky; top: 0; z-index: 5; background: var(--surface); border-bottom: 1px solid var(--line); }
.brand { max-width: 640px; margin: 0 auto; padding: 12px 16px 10px; display: flex; align-items: baseline; gap: 10px; }
.logo { font-weight: 800; letter-spacing: .02em; color: var(--green); font-size: 20px; }
.sub { color: var(--ink-dim); font-size: 14px; }
.progress { height: 4px; background: var(--mint); }
.bar { height: 100%; width: 0; background: var(--green-2); transition: width .25s ease; }
main { max-width: 640px; margin: 0 auto; padding: 24px 16px 40px; }
h1 { font-size: 28px; line-height: 1.2; margin: 4px 0 12px; }
h2 { font-size: 21px; line-height: 1.3; margin: 28px 0 8px; }
h3 { font-size: 17px; margin: 0 0 6px; }
.screen > h2:first-of-type { margin-top: 8px; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: 12px; font-weight: 700; color: var(--green); margin: 0; }
.lead { font-size: 18px; }
.muted { color: var(--ink-dim); }
.small { font-size: 14px; }
.ticks { padding-left: 0; list-style: none; }
.ticks li { padding-left: 28px; position: relative; margin: 8px 0; }
.ticks li::before { content: "✓"; position: absolute; left: 4px; color: var(--green-2); font-weight: 800; }
.note { background: var(--mint); border-radius: 12px; padding: 14px 16px; font-size: 15px; margin: 16px 0 24px; }
.btn { appearance: none; border: 0; border-radius: 12px; padding: 14px 22px; font: inherit; font-weight: 700; cursor: pointer; text-decoration: none; display: inline-block; text-align: center; }
.btn.primary { background: var(--green); color: var(--on-green); }
.btn.secondary { background: var(--mint); color: var(--green); }
.btn.ghost { background: transparent; color: var(--ink-dim); padding-left: 4px; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
#s-welcome .btn.primary { width: 100%; font-size: 18px; }
.nav { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 24px; }
.nav.stack { flex-direction: column; align-items: stretch; }
.choice-row { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 6px; }
.pick { appearance: none; border: 2px solid var(--line); background: var(--surface); color: var(--ink); border-radius: 12px; padding: 10px 2px; font: inherit; cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 4px; }
.pick .icon { font-size: 26px; line-height: 1; white-space: nowrap; }
.pick .icon.batt { font-size: 14px; letter-spacing: -1px; }
.pick .lbl { font-size: 12px; }
.pick[aria-pressed="true"], .opt[aria-pressed="true"] { border-color: var(--green-2); background: var(--mint); }
.field { display: block; margin: 14px 0; }
.field > span { display: block; font-weight: 600; margin-bottom: 6px; font-size: 15px; }
.field em { font-weight: 400; color: var(--ink-dim); }
select, input[type="text"], input[type="email"] { width: 100%; font: inherit; font-size: 16px; padding: 12px; border: 1.5px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink); }
.statement { font-size: 23px; min-height: 3.2em; margin: 12px 0 20px; }
.scale { display: flex; flex-direction: column; gap: 10px; }
.opt { appearance: none; border: 2px solid var(--line); background: var(--surface); color: var(--ink); border-radius: 12px; padding: 14px 16px; font: inherit; text-align: left; cursor: pointer; }
.scale.compact .opt { padding: 11px 14px; }
.phq { margin: 18px 0; }
.phq-q { font-weight: 700; margin: 0 0 10px; }
.error { color: var(--red); }
.crisis { background: #fff7ed; border: 1px solid #f3d9b5; border-radius: 12px; padding: 14px 16px; margin: 16px 0; color: #3b2a14; }
.crisis a { color: #8a4b08; font-weight: 700; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 16px; margin: 16px 0; }
.card.soft { background: var(--mist); }
.band { border-width: 2px; }
.band-label { font-size: 24px; font-weight: 800; color: var(--green); }
.b-risk .band-label { color: #b7791f; }
.b-severe .band-label, .b-very_severe .band-label { color: var(--red); }
.gauge { margin: 14px 0 4px; }
.gauge-track { position: relative; height: 12px; border-radius: 6px; background: linear-gradient(90deg, #52b788 0%, #52b788 31%, #e9c46a 31%, #e9a23b 58%, #d8703d 58%, #c8553d 100%); }
.gauge-mark { position: absolute; top: -5px; width: 6px; height: 22px; margin-left: -3px; border-radius: 3px; background: var(--ink); box-shadow: 0 0 0 2px var(--surface); }
.gauge-scale { position: relative; height: 16px; font-size: 12px; color: var(--ink-dim); margin-top: 4px; }
.gauge-scale span { position: absolute; top: 0; transform: translateX(-50%); }
.gauge-scale .t15 { left: 0; transform: none; }
.gauge-scale .t34 { left: 31.7%; }
.gauge-scale .t50 { left: 58.3%; }
.gauge-scale .t75 { left: auto; right: 0; transform: none; }
.meter { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; margin: 10px 0; }
.meter-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.meter-name { font-weight: 700; }
.pill { font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; background: var(--mint); color: var(--green); }
.lv-moderate .pill { background: #fbecc9; color: #8a5a00; }
.lv-high .pill { background: #f8d7cf; color: #9b2c16; }
.meter-track { height: 8px; border-radius: 4px; background: var(--mint); margin: 8px 0 2px; overflow: hidden; }
.meter-fill { height: 100%; background: var(--green-2); border-radius: 4px; min-width: 4px; }
.lv-moderate .meter-fill { background: var(--amber); }
.lv-high .meter-fill { background: var(--red); }
.meter p { margin: 6px 0 0; }
.tip { background: var(--surface); border: 1px solid var(--line); border-left: 5px solid var(--green-2); border-radius: 12px; padding: 14px 16px; margin: 12px 0; }
.tip h3 { display: flex; align-items: center; gap: 10px; font-size: 18px; }
.letter { display: inline-flex; width: 30px; height: 30px; border-radius: 8px; align-items: center; justify-content: center; background: var(--green); color: var(--on-green); font-weight: 800; }
.tip ul { padding-left: 20px; margin: 8px 0; }
.tip li { margin: 6px 0; }
.links a, .block-link { display: block; margin: 6px 0; font-weight: 600; }
.email-row { display: flex; gap: 8px; }
.email-row input { flex: 1; }
.refs { margin-top: 28px; font-size: 14px; color: var(--ink-dim); }
.refs summary { cursor: pointer; font-weight: 600; }
.foot { max-width: 640px; margin: 0 auto; padding: 0 16px 32px; font-size: 13px; color: var(--ink-dim); }
@media print {
  .top, .nav, #email-form, #email-status, .foot { display: none !important; }
  body { background: #fff; color: #000; }
  .refs { display: block; }
}