/* badacti.com — one stylesheet, no external requests.
   Page speed is the metric here: the campaign measures clicks-to-sessions,
   and a slow page loses sessions before analytics registers them. */

:root {
  --ink: #1a1c1f;
  --ink-soft: #4a4f57;
  --line: #e2e5ea;
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --accent: #1f5f8b;
  --accent-soft: #eaf1f6;
  --radius: 10px;
  --measure: 44rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Rubik, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.7;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 60rem; margin: 0 auto; padding: 0 1.25rem; }
.prose { max-width: var(--measure); }

/* ---------- header ---------- */

.site-head {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
.site-head .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-block: 0.9rem;
}
.brand {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.brand span { color: var(--accent); }
.nav { display: flex; gap: 1.15rem; align-items: center; font-size: 0.95rem; }
.nav a { color: var(--ink-soft); }
.nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }
.lang {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.1rem 0.6rem;
  font-size: 0.85rem;
}

/* ---------- hero ---------- */

.hero { padding: 3rem 0 2.25rem; border-bottom: 1px solid var(--line); }
.hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1.25;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}
.hero p { font-size: 1.08rem; color: var(--ink-soft); margin: 0 0 0.9rem; max-width: var(--measure); }

/* ---------- sections ---------- */

section { padding: 2.5rem 0; }
section + section { border-top: 1px solid var(--line); }
h2 { font-size: 1.35rem; margin: 0 0 1rem; letter-spacing: -0.01em; }
h3 { font-size: 1.08rem; margin: 1.75rem 0 0.5rem; }

/* ---------- article cards ---------- */

.cards { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); }
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.card h3 { margin: 0; font-size: 1.05rem; }
.card p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }
.card .meta { font-size: 0.82rem; color: var(--ink-soft); margin-top: auto; padding-top: 0.6rem; }

/* ---------- method list ---------- */

.method { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.9rem; }
.method li { padding-inline-start: 1.5rem; position: relative; color: var(--ink-soft); }
.method li::before {
  content: "✓";
  position: absolute;
  inset-inline-start: 0;
  color: var(--accent);
  font-weight: 700;
}
.method strong { color: var(--ink); }

/* ---------- tables ---------- */

.table-scroll { overflow-x: auto; margin: 1.25rem 0; }
table { border-collapse: collapse; width: 100%; font-size: 0.95rem; min-width: 32rem; }
th, td { border: 1px solid var(--line); padding: 0.6rem 0.75rem; text-align: start; vertical-align: top; }
th { background: var(--bg-soft); font-weight: 600; }

/* ---------- notes ---------- */

.note {
  background: var(--accent-soft);
  border-inline-start: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.9rem 1.1rem;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}
:dir(ltr) .note { border-radius: var(--radius) 0 0 var(--radius); }
.stamp { font-size: 0.88rem; color: var(--ink-soft); }

/* ---------- footer ---------- */

.site-foot {
  border-top: 1px solid var(--line);
  background: var(--bg-soft);
  padding: 2rem 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
}
.site-foot .wrap { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.site-foot a { color: var(--ink-soft); }