:root {
  --bg: #f7f4ef;
  --surface: #ffffff;
  --ink: #1c1917;
  --muted: #57534e;
  --line: #e7e5e4;
  --accent: #0f4c5c;
  --accent-2: #c2410c;
  --accent-soft: #e6f0f2;
  --warn-bg: #fff7ed;
  --warn-ink: #9a3412;
  --ok-bg: #ecfdf5;
  --ok-ink: #065f46;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(28, 25, 23, 0.06);
  --max: 1080px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: linear-gradient(180deg, #efe8df 0%, var(--bg) 220px);
  line-height: 1.55;
}
img { max-width: 100%; }
a { color: var(--accent); }
a:hover { color: var(--accent-2); }

.wrap {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 20;
  background: #fff;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(247, 244, 239, 0.92);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}
.brand {
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
  font-size: 0.95rem;
}
.brand span { color: var(--accent); }
.top-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff !important;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.55rem 0.95rem;
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
}

.hero {
  padding: 2.25rem 0 1.25rem;
}
.eyebrow {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: 0.85rem;
}
h1 {
  font-size: clamp(1.7rem, 4.5vw, 2.55rem);
  line-height: 1.15;
  margin: 0 0 0.85rem;
  letter-spacing: -0.02em;
}
.lede {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 46rem;
  margin: 0 0 1.25rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
}
.btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 0.75rem 1.15rem;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.05); color: #fff; }
.btn-ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
}
.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.toc {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow);
  margin: 0.5rem 0 1.75rem;
}
.toc h2 {
  margin: 0 0 0.6rem;
  font-size: 0.95rem;
}
.toc ol {
  margin: 0;
  padding-left: 1.2rem;
  columns: 1;
  gap: 1.5rem;
}
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }

section {
  margin: 0 0 2rem;
  scroll-margin-top: 4.5rem;
}
section > h2 {
  font-size: clamp(1.25rem, 3vw, 1.55rem);
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem 1.15rem;
  box-shadow: var(--shadow);
}
.grid-2 {
  display: grid;
  gap: 1rem;
}
.caption {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.65rem;
}
ul, ol { padding-left: 1.2rem; }
li { margin: 0.35rem 0; }
.steps { list-style: none; padding: 0; counter-reset: step; }
.steps li {
  counter-increment: step;
  position: relative;
  padding: 0.85rem 0.85rem 0.85rem 3.1rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  margin: 0.55rem 0;
  background: #fff;
}
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0.85rem;
  top: 0.85rem;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  font-weight: 700;
}
.steps strong { display: block; margin-bottom: 0.15rem; }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
  font-size: 0.9rem;
}
th, td {
  padding: 0.7rem 0.75rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
th {
  background: #fafaf9;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  position: sticky;
  top: 0;
}
tr:last-child td { border-bottom: 0; }
tr.featured td {
  background: #f0f7f8;
  font-weight: 550;
}
.num { text-align: right; white-space: nowrap; }

.props {
  display: grid;
  gap: 0.55rem;
}
.prop {
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: 0.5rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}
.prop:last-child { border-bottom: 0; }
.prop dt { color: var(--muted); font-weight: 600; }
.prop dd { margin: 0; }

.callout {
  border-radius: 12px;
  padding: 0.9rem 1rem;
  margin: 1rem 0;
  border: 1px solid var(--line);
}
.callout.warn { background: var(--warn-bg); color: var(--warn-ink); border-color: #fed7aa; }
.callout.info { background: var(--accent-soft); color: #134e4a; border-color: #b6d5db; }
.callout strong { display: block; margin-bottom: 0.2rem; }

.calc-grid {
  display: grid;
  gap: 1rem;
}
.field {
  display: grid;
  gap: 0.3rem;
  margin-bottom: 0.7rem;
}
.field label {
  font-size: 0.85rem;
  font-weight: 650;
  color: var(--muted);
}
.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.7rem 0.75rem;
  font: inherit;
  background: #fff;
}
.field textarea { min-height: 6rem; resize: vertical; }
.results {
  background: #fafaf9;
  border-radius: 12px;
  padding: 0.85rem;
  border: 1px dashed var(--line);
}
.results .big {
  font-size: 1.45rem;
  font-weight: 750;
  color: var(--accent);
}

.links {
  display: grid;
  gap: 0.55rem;
}
.links a {
  display: block;
  text-decoration: none;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.8rem 0.9rem;
  color: var(--ink);
}
.links a:hover { border-color: var(--accent); }
.links small { display: block; color: var(--muted); margin-top: 0.15rem; }

.form-card .honeypot {
  position: absolute;
  left: -10000px;
  height: 0;
  overflow: hidden;
}
.consent {
  font-size: 0.88rem;
  color: var(--muted);
  margin: 0.75rem 0 1rem;
}
.required::after { content: " *"; color: var(--accent-2); }

.contact-grid {
  display: grid;
  gap: 0.35rem 1rem;
}
.contact-grid div {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.5rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}
.contact-grid span { color: var(--muted); font-weight: 600; }

footer.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin: 0.75rem 0 1rem;
}
.footer-links a { font-weight: 650; }

@media (min-width: 720px) {
  .toc ol { columns: 2; }
  .grid-2, .calc-grid { grid-template-columns: 1fr 1fr; }
  .hero { padding-top: 3rem; }
}

@media (min-width: 960px) {
  .wrap { width: min(100% - 3rem, var(--max)); }
}