:root {
  --ink: #1f2428;
  --muted: #5d666d;
  --line: #e3e7ea;
  --bg: #ffffff;
  --soft: #f4f7f8;
  --accent: #0fa3a3;
  --accent-ink: #0b7c7c;
  --red: #d6452f;
  --wine: #8e1b1b;
  --violet: #7b3fc4;
  --orange: #e07a1f;
  --green: #2fa56b;
  --blue: #2f6fd6;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent-ink); }
a:hover { color: var(--ink); }
img { max-width: 100%; height: auto; }
h1, h2, h3, .logo { font-family: "Montserrat", "Inter", sans-serif; letter-spacing: -0.01em; line-height: 1.2; }
h1 { font-size: clamp(30px, 5vw, 46px); font-weight: 800; margin: 0 0 16px; }
h2 { font-size: clamp(23px, 3vw, 30px); font-weight: 800; margin: 48px 0 14px; }
h3 { font-size: 19px; font-weight: 700; margin: 26px 0 8px; }
p, ul, ol { margin: 0 0 14px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 16px; }

/* header */
.top { border-bottom: 1px solid var(--line); position: sticky; top: 0; background: rgba(255,255,255,.96); z-index: 10; }
.top .wrap { display: flex; align-items: center; gap: 24px; min-height: 64px; flex-wrap: wrap; }
.logo { font-weight: 800; font-size: 24px; text-decoration: none; color: var(--ink); }
.logo b { color: var(--accent); font-weight: 800; }
.nav { display: flex; gap: 20px; flex-wrap: wrap; font-size: 15px; }
.nav a { color: var(--ink); text-decoration: none; }
.nav a:hover, .nav a[aria-current] { color: var(--accent-ink); }
.top .call { margin-left: auto; font-weight: 700; text-decoration: none; color: var(--ink); white-space: nowrap; }

/* hero */
.head { padding: 40px 0 8px; }
.crumbs { font-size: 14px; color: var(--muted); margin-bottom: 18px; }
.crumbs a { color: var(--muted); }
.lead { font-size: 19px; color: var(--muted); max-width: 760px; }
.bar { height: 6px; border-radius: 3px; width: 72px; margin-bottom: 18px; background: var(--accent); }
.facts { display: flex; flex-wrap: wrap; gap: 12px; margin: 22px 0 6px; }
.facts div { border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px; min-width: 150px; }
.facts small { display: block; color: var(--muted); font-size: 13px; }
.facts b { font-size: 18px; }

/* layout */
.cols { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; padding-bottom: 56px; }
main { min-width: 0; }
aside .box { position: sticky; top: 88px; }
.box { border: 1px solid var(--line); border-radius: 14px; padding: 20px; background: var(--soft); }
.box h3 { margin-top: 0; }
.box p { font-size: 15px; }
.btn { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; font-weight: 700; padding: 11px 18px; border-radius: 10px; margin: 4px 0; }
.btn:hover { background: var(--accent-ink); color: #fff; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.related { list-style: none; padding: 0; margin: 0; font-size: 15px; }
.related li { margin: 6px 0; }

/* content blocks */
table { border-collapse: collapse; width: 100%; margin: 8px 0 18px; font-size: 15px; }
.tbl { overflow-x: auto; }
th, td { border-bottom: 1px solid var(--line); padding: 9px 10px; text-align: left; vertical-align: top; }
th { background: var(--soft); font-weight: 700; }
.note { border-left: 4px solid var(--accent); background: var(--soft); padding: 12px 16px; border-radius: 0 10px 10px 0; margin: 18px 0; font-size: 15px; }
.warn { border-left-color: var(--red); }
.formula { font-family: ui-monospace, Consolas, monospace; background: var(--soft); padding: 10px 14px; border-radius: 8px; display: inline-block; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; margin: 18px 0; }
.card { border: 1px solid var(--line); border-radius: 14px; padding: 18px; text-decoration: none; color: var(--ink); display: block; border-top: 6px solid var(--c, var(--accent)); }
.card:hover { border-color: var(--accent); }
.card b { display: block; font-size: 18px; font-family: "Montserrat", sans-serif; margin-bottom: 4px; }
.card span { color: var(--muted); font-size: 14px; }

.faq h3 { margin-top: 20px; }

/* footer */
.foot { background: var(--ink); color: #c9d0d4; font-size: 14px; padding: 36px 0; }
.foot a { color: #fff; }
.foot .wrap { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 28px; }
.foot .logo { color: #fff; }
.foot ul { list-style: none; padding: 0; }
.foot li { margin: 4px 0; }
.legal { margin-top: 14px; color: #9aa4aa; font-size: 13px; }

@media (max-width: 860px) {
  .cols { grid-template-columns: 1fr; gap: 24px; }
  aside .box { position: static; }
  .foot .wrap { grid-template-columns: 1fr; }
  .top { position: static; }
  .top .wrap { gap: 10px 24px; padding-top: 10px; padding-bottom: 10px; }
  .top .call { margin-left: 0; }
  .nav { gap: 14px; }
}

.cookie { position: fixed; left: 16px; right: 16px; bottom: 16px; max-width: 560px; margin: 0 auto; background: var(--ink); color: #e6eaec;
  font-size: 14px; padding: 12px 16px; border-radius: 12px; box-shadow: 0 6px 24px rgba(0,0,0,.2); z-index: 20; }
.cookie[hidden] { display: none; }
.cookie a { color: #fff; }
.cookie button { margin-left: 8px; background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: 6px 12px; font: inherit; font-weight: 700; cursor: pointer; }