:root {
  color-scheme: light dark;
  --surface-page: #f3f0e8;
  --surface-card: #fffdf7;
  --surface-strong: #17211b;
  --surface-muted: #e7e2d6;
  --text-primary: #17211b;
  --text-secondary: #4b574f;
  --text-inverse: #f8f5ed;
  --action-primary: #196548;
  --action-hover: #104b35;
  --border-default: #b8b3a8;
  --border-strong: #687269;
  --feedback-pass: #17623f;
  --feedback-fail: #9c2f27;
  --feedback-incomplete: #765500;
  --focus-ring: #126ed3;
  --radius-sm: 0.5rem;
  --radius-lg: 1rem;
  --shadow-card: 0 1rem 3rem rgb(23 33 27 / 0.09);
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--surface-page);
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.6;
}

a { color: var(--action-primary); text-underline-offset: 0.2em; }
a:hover { color: var(--action-hover); }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: var(--space-4);
  top: var(--space-4);
  z-index: 10;
  padding: var(--space-2) var(--space-4);
  background: var(--surface-strong);
  color: var(--text-inverse);
  transform: translateY(-200%);
}
.skip-link:focus { transform: translateY(0); }

.site-header, footer {
  width: min(72rem, calc(100% - 2rem));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding: var(--space-6) 0;
}

.site-header nav, footer nav { display: flex; flex-wrap: wrap; gap: var(--space-6); }
.site-header nav a, footer nav a { min-height: 2.75rem; display: inline-flex; align-items: center; }

.wordmark {
  color: var(--text-primary);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}
.wordmark span { color: var(--action-primary); }

main { overflow: hidden; }
.hero, .results, .explanation, .price-panel, .prose-page {
  width: min(66rem, calc(100% - 2rem));
  margin: 0 auto;
}

.hero { padding: clamp(3rem, 9vw, 7rem) 0 var(--space-16); }
.eyebrow { margin: 0 0 var(--space-3); color: var(--action-primary); font-size: 0.78rem; font-weight: 800; letter-spacing: 0.13em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.035em; }
h1 { max-width: 14ch; margin: 0; font-size: clamp(2.7rem, 8vw, 6rem); }
h2 { margin: 0; font-size: clamp(2rem, 5vw, 3.5rem); }
h3 { margin: 0; font-size: 1.15rem; }
.lede { max-width: 60ch; margin: var(--space-6) 0 var(--space-8); color: var(--text-secondary); font-size: clamp(1.1rem, 2vw, 1.35rem); }

.scan-card, .interest-form {
  padding: var(--space-6);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  background: var(--surface-card);
  box-shadow: var(--shadow-card);
}

label { display: block; margin-bottom: var(--space-2); font-weight: 750; }
.input-row { display: grid; grid-template-columns: 1fr auto; gap: var(--space-3); }
input[type="url"], input[type="email"] {
  min-width: 0;
  min-height: 3rem;
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--surface-card);
  color: var(--text-primary);
  font: inherit;
}
input:hover { border-color: var(--border-strong); }
button {
  min-height: 3rem;
  padding: var(--space-3) var(--space-6);
  border: 2px solid var(--action-primary);
  border-radius: var(--radius-sm);
  background: var(--action-primary);
  color: #fff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}
button:hover { border-color: var(--action-hover); background: var(--action-hover); }
button:active { transform: translateY(1px); }
button:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

.help, .form-error, .form-success { margin: var(--space-2) 0 0; font-size: 0.9rem; }
.help { color: var(--text-secondary); }
.form-error { color: var(--feedback-fail); font-weight: 700; }
.form-success { color: var(--feedback-pass); font-weight: 700; }

.status-panel {
  width: min(66rem, calc(100% - 2rem));
  margin: 0 auto var(--space-8);
  padding: var(--space-4) var(--space-6);
  border-left: 0.3rem solid var(--feedback-incomplete);
  background: var(--surface-muted);
  font-weight: 700;
}
.status-panel[data-state="complete"] { border-color: var(--feedback-pass); }
.status-panel[data-state="error"] { border-color: var(--feedback-fail); }

.results { padding: var(--space-12) 0 var(--space-16); scroll-margin-top: var(--space-4); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: var(--space-6); margin-bottom: var(--space-8); }
.score { max-width: 18rem; font-weight: 800; text-align: right; }
.comparison { margin-bottom: var(--space-6); padding: var(--space-4) var(--space-6); border: 1px solid var(--border-strong); border-radius: var(--radius-sm); background: var(--surface-card); }
.check-list { display: grid; gap: var(--space-3); }
.check { padding: var(--space-4) var(--space-6); border: 1px solid var(--border-default); border-left: 0.35rem solid var(--border-strong); border-radius: var(--radius-sm); background: var(--surface-card); }
.check-pass { border-left-color: var(--feedback-pass); }
.check-fail { border-left-color: var(--feedback-fail); }
.check-incomplete { border-left-color: var(--feedback-incomplete); }
.check h3 { display: flex; align-items: baseline; gap: var(--space-3); }
.check p { margin: var(--space-2) 0; color: var(--text-secondary); }
.check-status { min-width: 6.5rem; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; }
.check-pass .check-status { color: var(--feedback-pass); }
.check-fail .check-status { color: var(--feedback-fail); }
.check-incomplete .check-status { color: var(--feedback-incomplete); }
.non-guarantee { max-width: 70ch; margin: var(--space-6) 0 0; color: var(--text-secondary); font-size: 0.9rem; }

.explanation { padding: var(--space-16) 0; border-top: 1px solid var(--border-default); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); margin-top: var(--space-8); }
.feature-grid article { padding: var(--space-6); border-top: 3px solid var(--action-primary); background: var(--surface-card); }
.feature-grid p { color: var(--text-secondary); }
.feature-index { display: block; margin-bottom: var(--space-8); color: var(--action-primary); font: 700 0.8rem ui-monospace, SFMono-Regular, Menlo, monospace; }

.price-panel { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-12); padding: var(--space-16) 0; border-top: 1px solid var(--border-default); }
.price-panel > div > p:last-child { max-width: 52ch; color: var(--text-secondary); }
.interest-form { box-shadow: none; }
.interest-form input[type="email"] { width: 100%; }
.interest-form button { width: 100%; margin-top: var(--space-4); }
.check-control { display: grid; grid-template-columns: 1.5rem 1fr; gap: var(--space-3); align-items: start; margin-top: var(--space-4); font-weight: 600; }
.check-control input { width: 1.25rem; height: 1.25rem; margin: 0.2rem 0 0; }

footer { margin-top: var(--space-8); border-top: 1px solid var(--border-default); color: var(--text-secondary); }
.prose-page { max-width: 48rem; padding: var(--space-16) 0; }
.prose-page h1 { max-width: none; font-size: clamp(2.5rem, 7vw, 4.5rem); }
.prose-page h2 { margin-top: var(--space-12); font-size: 1.5rem; }
.prose-page p { max-width: 68ch; }
.prose-page form { margin: var(--space-6) 0; }

[hidden] { display: none !important; }

@media (max-width: 44rem) {
  .site-header, footer, .section-heading { align-items: flex-start; flex-direction: column; }
  .site-header nav { gap: var(--space-4); }
  .input-row, .price-panel, .feature-grid { grid-template-columns: 1fr; }
  .input-row button { width: 100%; }
  .score { text-align: left; }
  .check h3 { align-items: flex-start; flex-direction: column; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface-page: #111713;
    --surface-card: #19211c;
    --surface-strong: #eef4ec;
    --surface-muted: #222c25;
    --text-primary: #eef4ec;
    --text-secondary: #bdc8bf;
    --text-inverse: #111713;
    --action-primary: #74d5aa;
    --action-hover: #a2e5c6;
    --border-default: #465349;
    --border-strong: #89968c;
    --feedback-pass: #77d8a9;
    --feedback-fail: #ff9b91;
    --feedback-incomplete: #f3c969;
    --focus-ring: #7ab8ff;
    --shadow-card: none;
  }
  button { color: #102018; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}