:root {
  color-scheme: light;
  --bg: #f7f4ed;
  --panel: #fffdf7;
  --panel-strong: #f0e7d7;
  --text: #1f2722;
  --muted: #667067;
  --line: #d7cebe;
  --accent: #0f7b5c;
  --accent-2: #d8572a;
  --accent-3: #234c63;
  --good: #15945f;
  --warn: #d9822b;
  --bad: #c43b31;
  --shadow: 0 24px 70px rgba(50, 42, 28, .16);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #111613;
  --panel: #1a211d;
  --panel-strong: #263129;
  --text: #edf2ea;
  --muted: #a8b5aa;
  --line: #334238;
  --accent: #4fd5a3;
  --accent-2: #ff946d;
  --accent-3: #8fc7e4;
  --shadow: 0 24px 70px rgba(0, 0, 0, .38);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  background:
    linear-gradient(135deg, rgba(15,123,92,.10), transparent 32rem),
    radial-gradient(circle at 92% 8%, rgba(216,87,42,.10), transparent 26rem),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .9rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg), transparent 8%);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  font-weight: 800;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  border-radius: .45rem;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  font-size: .9rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: .4rem;
  flex-wrap: wrap;
  justify-content: center;
}

.nav a {
  padding: .5rem .75rem;
  border-radius: .35rem;
  color: var(--muted);
  font-size: .95rem;
}

.nav a:hover { background: var(--panel-strong); color: var(--text); }

.controls { display: flex; align-items: center; gap: .5rem; }

select, input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: .35rem;
  padding: .72rem .8rem;
  background: var(--panel);
  color: var(--text);
  font: inherit;
}

.controls select { width: auto; min-width: 4.7rem; padding: .45rem .55rem; }

.icon-button {
  width: 2.35rem;
  height: 2.35rem;
  border: 1px solid var(--line);
  border-radius: .35rem;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}

main { width: min(1180px, calc(100% - 2rem)); margin: 0 auto; }

.hero {
  min-height: 82vh;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, .55fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  padding: clamp(3rem, 7vw, 6rem) 0;
}

.hero-copy h1, .page-hero h1 {
  max-width: 850px;
  margin: .4rem 0 1rem;
  font-size: clamp(2.4rem, 6vw, 5.8rem);
  line-height: .96;
  letter-spacing: 0;
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
}

.eyebrow {
  margin: 0;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: .08em;
  font: 700 .78rem/1.4 ui-sans-serif, system-ui, sans-serif;
}

.hero-actions, .footer div {
  display: flex;
  gap: .8rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: .72rem 1rem;
  border: 1px solid var(--line);
  border-radius: .4rem;
  font: 800 .95rem/1.2 ui-sans-serif, system-ui, sans-serif;
  cursor: pointer;
}

.button.primary { color: #fff; background: var(--accent); border-color: var(--accent); }
.button.ghost { background: var(--panel); color: var(--text); }
.button.full { width: 100%; }

.hero-panel, .tool-card, .result-card, .feature-grid article, .content-grid article, .cta-strip, .faq details {
  border: 1px solid var(--line);
  border-radius: .55rem;
  background: color-mix(in srgb, var(--panel), transparent 3%);
  box-shadow: var(--shadow);
}

.hero-panel { padding: 1rem; transform: rotate(-1.5deg); }
.signal-row { display: grid; gap: .2rem; padding: 1rem; border-bottom: 1px solid var(--line); }
.signal-row:last-child { border-bottom: 0; }
.signal-row span { color: var(--muted); font-size: .9rem; }
.signal-row strong { font-size: 1.1rem; }

.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, .65fr);
  gap: 1.25rem;
  align-items: start;
  padding: 2rem 0 4rem;
}

.tool-layout.narrow { grid-template-columns: minmax(0, 1fr) minmax(300px, .7fr); }

.tool-card, .result-card { padding: clamp(1.1rem, 3vw, 2rem); }
.result-card { position: sticky; top: 5.5rem; }

.section-heading { margin-bottom: 1.25rem; }
.section-heading h2, .content-band h2, .content-grid h2, .faq h2, .tool-card h2, .result-card h2 {
  margin: .3rem 0 .5rem;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.08;
}

.grid { display: grid; gap: 1rem; margin-bottom: 1rem; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }

label span, legend {
  display: block;
  margin-bottom: .35rem;
  color: var(--muted);
  font: 700 .9rem/1.2 ui-sans-serif, system-ui, sans-serif;
}

fieldset {
  margin: 1rem 0;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: .45rem;
}

.check {
  display: flex;
  align-items: center;
  gap: .65rem;
  margin: .65rem 0;
}

.check input { width: auto; }
.check span { margin: 0; color: var(--text); font-weight: 500; }

.score-ring {
  display: flex;
  align-items: baseline;
  justify-content: center;
  width: min(220px, 70vw);
  aspect-ratio: 1;
  margin: .5rem auto 1.25rem;
  border-radius: 50%;
  background: conic-gradient(var(--accent) var(--score, 72%), var(--panel-strong) 0);
  color: var(--text);
  box-shadow: inset 0 0 0 18px var(--panel);
}

.score-ring span { font-size: 4.5rem; font-weight: 900; line-height: 1; }
.score-ring small { color: var(--muted); font-size: 1.1rem; }

.meter { height: .55rem; border-radius: 99px; background: var(--panel-strong); overflow: hidden; }
.meter span { display: block; height: 100%; background: linear-gradient(90deg, var(--accent-2), var(--accent)); }
.action-list { padding-left: 1.1rem; color: var(--muted); }
.action-list li { margin: .5rem 0; }

.content-band, .content-grid, .faq, .sources, .page { padding: 3rem 0; }
.feature-grid, .content-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.feature-grid article, .content-grid article { padding: 1.4rem; box-shadow: none; }
.content-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.page-hero { padding: clamp(3rem, 7vw, 5rem) 0 2rem; }
.page-hero h1 { font-size: clamp(2.2rem, 5vw, 4.8rem); }
.article-body { max-width: 820px; }
.article-body h2 { margin-top: 2rem; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: .55rem;
  background: var(--panel);
}

table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { padding: .9rem 1rem; border-bottom: 1px solid var(--line); text-align: left; }
th { background: var(--panel-strong); font-family: ui-sans-serif, system-ui, sans-serif; }

.cta-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem;
  margin: 2rem 0;
}

.faq details { padding: 1rem 1.2rem; margin: .8rem 0; box-shadow: none; }
.faq summary { cursor: pointer; font-weight: 800; }

.plain-list { padding-left: 1.1rem; }
.csv-output {
  white-space: pre-wrap;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: .45rem;
  background: var(--panel-strong);
  min-height: 10rem;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem clamp(1rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer a { text-decoration: underline; }

@media (max-width: 900px) {
  .site-header { position: static; align-items: flex-start; flex-direction: column; }
  .nav { justify-content: flex-start; }
  .hero, .tool-layout, .content-grid, .feature-grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .result-card { position: static; }
  .hero-panel { transform: none; }
}

@media (max-width: 560px) {
  main { width: min(100% - 1rem, 1180px); }
  .grid.two { grid-template-columns: 1fr; }
  .hero-copy h1, .page-hero h1 { font-size: 2.35rem; }
  .cta-strip, .footer { flex-direction: column; align-items: stretch; }
  .button { width: 100%; }
}