:root {
  --sand: #f5f0e6;
  --card: #fffdf8;
  --soil: #2e271f;
  --muted: #6b6155;
  --water: #1e5b74;
  --water-dark: #15435a;
  --crop: #5d7a35;
  --rust: #b0532a;
  --line: #ddd3c2;
  --radius: 14px;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--sand);
  color: var(--soil);
  font-family: "Public Sans", system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
}

h1, h2, h3 { font-family: "Fraunces", Georgia, serif; line-height: 1.15; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.2rem); margin: 0 0 18px; font-weight: 650; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 12px; font-weight: 650; }
h3 { font-size: 1.15rem; margin: 0 0 6px; font-weight: 600; }

a { color: var(--water-dark); }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--crop); outline-offset: 3px; border-radius: 4px; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

section { padding: 72px 0; border-bottom: 1px solid var(--line); }
.intro { max-width: 62ch; color: var(--muted); margin: 0 0 32px; }

/* Header */
.site-header { padding: 18px 0; border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.brand { font-family: "Fraunces", Georgia, serif; font-weight: 700; font-size: 1.2rem; color: var(--soil); text-decoration: none; }
.brand small { display: block; font-family: "Public Sans", sans-serif; font-weight: 400; font-size: 0.8rem; color: var(--muted); }
.nav { display: flex; gap: 20px; flex-wrap: wrap; }
.nav a { color: var(--soil); text-decoration: none; font-size: 0.95rem; }
.nav a:hover { text-decoration: underline; text-underline-offset: 6px; }

/* Buttons */
.btn {
  display: inline-block; background: var(--water); color: #fff; text-decoration: none;
  padding: 13px 22px; border-radius: 999px; font-weight: 600; border: 2px solid var(--water);
}
.btn:hover { background: var(--water-dark); border-color: var(--water-dark); }
.btn.secondary { background: transparent; color: var(--water-dark); }
.btn.secondary:hover { background: rgba(30, 91, 116, 0.08); }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }

/* Hero */
.hero { padding: 64px 0 80px; }
.hero .wrap { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: center; }
.eyebrow { color: var(--crop); font-weight: 600; font-size: 0.92rem; margin: 0 0 12px; text-transform: uppercase; letter-spacing: 0.06em; }
.lede { font-size: 1.15rem; max-width: 56ch; margin: 0; }
.solves { list-style: none; padding: 0; margin: 22px 0 0; display: flex; flex-wrap: wrap; gap: 8px; counter-reset: solve; }
.solves li {
  counter-increment: solve; background: var(--card); border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px 6px 8px; font-size: 0.92rem; font-weight: 500;
}
.solves li::before {
  content: counter(solve); display: inline-grid; place-items: center; width: 22px; height: 22px; margin-right: 8px;
  border-radius: 50%; background: var(--water); color: #fff; font-size: 0.78rem; font-weight: 700;
}

.report {
  margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: 0 18px 40px -24px rgba(46, 39, 31, 0.35);
}
.report-head { display: flex; justify-content: space-between; align-items: center; font-weight: 600; margin-bottom: 10px; }
.tag { font-size: 0.75rem; font-weight: 600; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; }
.report-rows { margin: 0; }
.row { display: grid; grid-template-columns: 1fr auto 86px; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); align-items: center; }
.row dt { font-weight: 500; }
.row dd { margin: 0; font-variant-numeric: tabular-nums; text-align: right; color: var(--muted); }
.flag { font-size: 0.8rem; font-weight: 700; text-align: center !important; border-radius: 999px; padding: 3px 0; }
.flag.high { background: #f6dfd3; color: var(--rust); }
.flag.ok { background: #e3ead6; color: #46602a; }
.report figcaption { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line); font-size: 0.95rem; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card p { margin: 0; color: var(--muted); }

/* Steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.steps li { counter-increment: step; border-top: 3px solid var(--water); padding-top: 16px; }
.steps li::before { content: counter(step); font-family: "Fraunces", serif; font-size: 2rem; font-weight: 700; color: var(--water); display: block; line-height: 1; margin-bottom: 8px; }
.steps p { margin: 0; color: var(--muted); }

/* Band */
.band { background: #e8efe0; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.two p { max-width: 58ch; }
.note { background: var(--card); border-left: 4px solid var(--rust); border-radius: 0 var(--radius) var(--radius) 0; padding: 22px; }
.note p { margin: 0; }

/* FAQ */
details { border-top: 1px solid var(--line); padding: 16px 0; max-width: 760px; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 10px 0 0; color: var(--muted); }

/* Contact */
.contact { background: var(--water-dark); color: #fff; border-bottom: 0; }
.contact h2 { color: #fff; }
.contact p { max-width: 62ch; color: #d6e4ea; }
.contact .btn { background: #fff; color: var(--water-dark); border-color: #fff; margin-top: 8px; }
.contact .btn:hover { background: #e6f0f4; }
.contact a:not(.btn) { color: #fff; }

.flag.mid { background: #f6ebc8; color: #7a5a08; }

/* Contact form */
.contact-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 48px; align-items: start; }
.form {
  background: var(--card); color: var(--soil); border-radius: var(--radius); padding: 26px;
  display: grid; gap: 14px;
}
.form.light { border: 1px solid var(--line); }
.form label { display: grid; gap: 6px; font-weight: 600; font-size: 0.95rem; }
.form .opt { font-weight: 400; color: var(--muted); }
.form input, .form select, .form textarea {
  font: inherit; font-weight: 400; color: var(--soil); background: #fff;
  border: 1px solid #cbbfab; border-radius: 10px; padding: 11px 12px; width: 100%;
}
.form input[type="file"] { padding: 9px; background: var(--sand); }
.form input:focus, .form select:focus, .form textarea:focus { outline: 3px solid rgba(30, 91, 116, 0.25); border-color: var(--water); }
.form .btn { justify-self: start; cursor: pointer; font: inherit; font-weight: 600; }
.contact .form .btn { background: var(--water); color: #fff; border-color: var(--water); }
.contact .form .btn:hover { background: var(--water-dark); }
.form .fine, .contact .form .fine { color: var(--muted); font-size: 0.85rem; margin: 0; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
fieldset { border: 0; padding: 0; margin: 0; display: grid; gap: 14px; }
legend { font-family: "Fraunces", Georgia, serif; font-weight: 600; font-size: 1.1rem; margin-bottom: 4px; padding: 0; }
.unit-in { display: flex; gap: 0; }
.unit-in input { border-radius: 10px 0 0 10px; min-width: 0; }
.unit-in select, .unit-in .u {
  width: auto; flex: 0 0 auto; border-radius: 0 10px 10px 0; border-left: 0; background: var(--sand);
  font-size: 0.88rem; padding: 11px 10px; border: 1px solid #cbbfab; border-left: 0; font-weight: 500; color: var(--muted);
}

/* Water test tool */
.tool-intro { padding: 56px 0 28px; border-bottom: 0; }
.tool { padding-top: 12px; }
.tool-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 36px; align-items: start; }
.results { position: sticky; top: 20px; }
.results-empty { background: var(--card); border: 1px dashed #cbbfab; border-radius: var(--radius); padding: 24px; }
.results-empty h2 { font-size: 1.35rem; }
.results-empty p { color: var(--muted); }
.res-list { display: grid; }
.res { padding: 14px 0; border-top: 1px solid var(--line); }
.res-top { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.res-top .flag { flex: 0 0 96px; }
.res-val { color: var(--muted); font-size: 0.9rem; font-variant-numeric: tabular-nums; }
.res p { margin: 6px 0 0; font-size: 0.97rem; }
.next { margin-top: 18px; background: #e8efe0; border-radius: var(--radius); padding: 20px; }
.next p { margin: 0 0 12px; }
.next .btn { cursor: pointer; font: inherit; font-weight: 600; }
.thanks { padding: 96px 0; border-bottom: 0; }

.mail-line { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 1.1rem; font-weight: 600; }
.copy { font: inherit; font-size: 0.85rem; font-weight: 600; cursor: pointer; background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.6); border-radius: 999px; padding: 4px 12px; }
.copy:hover { background: rgba(255,255,255,0.12); }

/* Footer */
.site-footer { padding: 28px 0 40px; font-size: 0.9rem; color: var(--muted); }
.site-footer p { margin: 4px 0; }

@media (max-width: 900px) {
  .hero .wrap, .two, .contact-grid, .tool-grid { grid-template-columns: 1fr; gap: 36px; }
  .results { position: static; }
  .cards { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  section { padding: 52px 0; }
  .cards, .steps { grid-template-columns: 1fr; }
  .nav { gap: 14px; }
  .row { grid-template-columns: 1fr auto 74px; gap: 8px; }
  .field-row { grid-template-columns: 1fr; }
  .form { padding: 18px; }
}