:root {
  --ink: #0f1b2d;
  --ink-soft: #44546a;
  --line: #e3e8ef;
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --accent: #0b6e4f;
  --accent-ink: #ffffff;
  --tag: #e8f3ee;
  --radius: 10px;
  --max: 1120px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { color: var(--ink); background: var(--bg); line-height: 1.6; font-size: 17px; }
a { color: var(--accent); }
img { max-width: 100%; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header { border-bottom: 1px solid var(--line); background: var(--bg); position: sticky; top: 0; z-index: 10; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-weight: 700; font-size: 1.15rem; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.brand span { color: var(--accent); }
.nav { display: flex; gap: 24px; align-items: center; }
.nav a { color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }

/* Buttons */
.btn { display: inline-block; padding: 11px 20px; border-radius: 8px; font-weight: 600; text-decoration: none; font-size: 0.95rem; border: 1px solid transparent; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--bg); }
.btn-ghost:hover { border-color: var(--ink-soft); }
.nav .btn { color: var(--accent-ink); padding: 8px 14px; }

/* Hero */
.hero { padding: 88px 0 72px; background: linear-gradient(180deg, var(--bg-alt), var(--bg)); }
.hero h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); line-height: 1.15; margin: 0 0 18px; letter-spacing: -0.02em; max-width: 820px; }
.hero p.lead { font-size: 1.2rem; color: var(--ink-soft); max-width: 720px; margin: 0 0 28px; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.78rem; font-weight: 700; color: var(--accent); margin: 0 0 12px; }

/* Sections */
section { padding: 64px 0; }
section.alt { background: var(--bg-alt); }
h2 { font-size: 1.9rem; letter-spacing: -0.01em; margin: 0 0 12px; }
h3 { font-size: 1.2rem; margin: 0 0 8px; }
.section-intro { color: var(--ink-soft); max-width: 720px; margin: 0 0 36px; }

/* Grids & cards */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.card { border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; background: var(--bg); display: flex; flex-direction: column; }
.card p { color: var(--ink-soft); margin: 0 0 14px; }
.card .more { margin-top: auto; font-weight: 600; text-decoration: none; }
.tags { display: flex; gap: 6px; flex-wrap: wrap; margin: 0 0 12px; }
.tag { background: var(--tag); color: var(--accent); font-size: 0.75rem; font-weight: 700; padding: 3px 9px; border-radius: 999px; }
.tag.neutral { background: var(--bg-alt); color: var(--ink-soft); }

.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; }
.steps li { counter-increment: step; position: relative; padding-left: 52px; margin-bottom: 22px; }
.steps li::before { content: counter(step); position: absolute; left: 0; top: 0; width: 34px; height: 34px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-weight: 700; display: grid; place-items: center; }
.steps li strong { display: block; }
.steps li span { color: var(--ink-soft); }

/* Product detail */
.product { padding: 56px 0; border-top: 1px solid var(--line); }
.product:first-of-type { border-top: 0; }
.product-head { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: flex-start; margin-bottom: 20px; }
.product-head p { color: var(--ink-soft); max-width: 680px; margin: 0; }
.product-body { display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; }
.product-body ul { padding-left: 20px; margin: 0; }
.product-body li { margin-bottom: 6px; }
.facts { border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; background: var(--bg-alt); font-size: 0.95rem; }
.facts dl { margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 8px 16px; }
.facts dt { font-weight: 600; color: var(--ink); }
.facts dd { margin: 0; color: var(--ink-soft); }
@media (max-width: 820px) { .product-body { grid-template-columns: 1fr; } }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--bg-alt); font-weight: 600; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }

/* FAQ */
details { border-bottom: 1px solid var(--line); padding: 16px 0; }
details summary { cursor: pointer; font-weight: 600; }
details p { color: var(--ink-soft); margin: 10px 0 0; }

/* CTA band */
.cta { background: var(--ink); color: #fff; border-radius: var(--radius); padding: 40px; display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.cta h2 { color: #fff; margin: 0 0 6px; }
.cta p { color: #c6d0dc; margin: 0; }

/* Prose pages */
.prose { max-width: 760px; padding: 56px 0; }
.prose h1 { font-size: 2.2rem; margin: 0 0 8px; }
.prose h2 { font-size: 1.35rem; margin: 32px 0 8px; }
.prose p, .prose li { color: var(--ink-soft); }
.note { border-left: 4px solid var(--accent); background: var(--tag); padding: 12px 16px; border-radius: 4px; color: var(--ink); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0; font-size: 0.88rem; color: var(--ink-soft); margin-top: 32px; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer nav { display: flex; gap: 18px; }
.site-footer a { color: var(--ink-soft); }
.disclaimer { width: 100%; margin-top: 8px; font-size: 0.8rem; }

@media (max-width: 640px) {
  .nav a:not(.btn) { display: none; }
  .hero { padding: 56px 0 48px; }
}

/* Forms */
.form { display: grid; gap: 16px; margin: 24px 0; }
.field { display: grid; gap: 6px; }
.field label { font-weight: 600; font-size: 0.92rem; }
.field input, .field select, .field textarea { font: inherit; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink); }
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .field-row { grid-template-columns: 1fr; } }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form button { justify-self: start; cursor: pointer; }
.form button:disabled { opacity: 0.6; cursor: wait; }
.form-status { min-height: 1.4em; margin: 0; }
.form-status.ok { color: var(--accent); font-weight: 600; }
.form-status.err { color: #b42318; }