@font-face {
  font-family: "Onest";
  src: url("/fonts/onest-cyrillic-wght-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: "Onest";
  src: url("/fonts/onest-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+20BD, U+2122, U+2212;
}

:root {
  --bg: #ffffff;
  --ink: #0f3b3d;
  --muted: #557073;
  --grid: #dce4e4;
  --tint: #f3f7f7;
  --drop: #c9432c;
  --h1: #fff7db;
  --h2: #fde9a6;
  --h3: #f9d66b;
  --h4: #f2be2c;
  --h5: #0f3b3d;

  --font: "Onest", "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--font);
  font-variant-numeric: tabular-nums;
}

a { color: inherit; text-underline-offset: 3px; }
a:focus-visible, .button:focus-visible { outline: 3px solid var(--h4); outline-offset: 2px; }

.wrap { max-width: 72rem; margin: 0 auto; padding: 0 1.25rem; }

.top { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding-block: 1.25rem; border-bottom: 1px solid var(--grid); }
.logo { display: inline-flex; align-items: center; gap: 0.55rem; font-weight: 700; font-size: 1.15rem; text-decoration: none; letter-spacing: -0.01em; }
.logo svg { flex: none; }
.top nav { display: flex; gap: 1.5rem; font-size: 0.95rem; }
.top nav a { text-decoration: none; color: var(--muted); }
.top nav a:hover, .top nav a[aria-current] { color: var(--ink); }

.hero { display: grid; gap: 3rem; padding-block: 4rem 5rem; }
@media (min-width: 960px) { .hero { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); align-items: center; } }

h1 { font-size: clamp(2.1rem, 1.4rem + 3vw, 3.6rem); font-weight: 750; line-height: 1.04; letter-spacing: -0.035em; margin: 0 0 1.25rem; }
h2 { font-size: clamp(1.4rem, 1.2rem + 1vw, 2rem); font-weight: 700; letter-spacing: -0.02em; margin: 0 0 1.5rem; }
.hero p { color: var(--muted); max-width: 30rem; margin: 0 0 2rem; }

.button {
  display: inline-block;
  padding: 0.8rem 1.3rem;
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  border-radius: 6px;
  transition: background-color 150ms ease;
}
.button:hover { background: #1b5658; }
.button:active { transform: translateY(1px); }

/* Когортная таблица: главный визуальный элемент. */
.cohorts { margin: 0; overflow-x: auto; }
.cohorts table { border-collapse: separate; border-spacing: 3px; width: 100%; min-width: 32rem; font-size: 0.9rem; }
.cohorts th { font-weight: 500; color: var(--muted); text-align: left; padding: 0.35rem 0.5rem; white-space: nowrap; }
.cohorts thead th { font-size: 0.8rem; text-align: center; }
.cohorts td { text-align: center; padding: 0.6rem 0.25rem; border-radius: 3px; }
.cohorts .size { color: var(--muted); text-align: right; font-size: 0.8rem; }
.h1 { background: var(--h1); }
.h2 { background: var(--h2); }
.h3 { background: var(--h3); }
.h4 { background: var(--h4); }
.h5 { background: var(--h5); color: #fff; }
.cohorts .mark { outline: 2px solid var(--drop); outline-offset: -2px; font-weight: 700; }
.cohorts figcaption { margin-top: 0.9rem; font-size: 0.85rem; color: var(--muted); }
.cohorts figcaption b { color: var(--drop); font-weight: 600; }

.inside { padding-block: 4rem; border-top: 1px solid var(--grid); }
.inside dl { display: grid; gap: 2rem 4rem; margin: 0; }
@media (min-width: 760px) { .inside dl { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.inside dt { font-weight: 650; font-size: 1.1rem; margin-bottom: 0.35rem; }
.inside dd { margin: 0; color: var(--muted); max-width: 32rem; }

.prices { padding-block: 4rem 5rem; background: var(--tint); }
.prices table { width: 100%; border-collapse: collapse; max-width: 52rem; }
.prices th, .prices td { text-align: left; padding: 1rem 1rem 1rem 0; border-bottom: 1px solid var(--grid); vertical-align: top; }
.prices th { font-weight: 650; width: 10rem; }
.prices td.price { white-space: nowrap; font-weight: 600; text-align: right; }
.prices td { color: var(--muted); }

.foot { padding-block: 2rem 3rem; font-size: 0.85rem; color: var(--muted); }

.doc { max-width: 42rem; padding-block: 3.5rem 4rem; }
.doc h1 { font-size: clamp(1.8rem, 1.3rem + 2vw, 2.6rem); }
.doc h2 { font-size: 1.3rem; margin: 2.5rem 0 0.75rem; }
.doc p, .doc li { line-height: 1.7; }
.doc .formula { margin: 1.5rem 0; padding: 1rem 1.25rem; background: var(--tint); border-left: 4px solid var(--h4); font-weight: 500; }

.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

.top { flex-wrap: wrap; }
.top nav a { white-space: nowrap; }
@media (max-width: 640px) {
  .cohorts .size { display: none; }
  .cohorts table { min-width: 0; font-size: 0.8rem; border-spacing: 2px; }
  .cohorts th { padding: 0.3rem 0.2rem; }
}

/* Форма обратной связи */
.contact { padding-block: 3rem 4rem; }
.contact-lead { max-width: 36rem; margin: 0 0 1.75rem; color: var(--muted); }
.contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; max-width: 44rem; }
.contact-form label { display: grid; gap: 0.4rem; font-size: 0.9rem; font-weight: 600; }
.contact-form .contact-message { grid-column: 1 / -1; }
.contact-form input, .contact-form textarea { font: inherit; font-weight: 400; color: var(--ink); background: var(--bg); border: 1px solid var(--grid); border-radius: 6px; padding: 0.7rem 0.8rem; resize: vertical; }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 3px var(--h3); }
.contact-form button { justify-self: start; font: inherit; font-weight: 600; color: var(--bg); background: var(--ink); border: 0; border-radius: 6px; padding: 0.8rem 1.3rem; cursor: pointer; }
.contact-form button:hover { background: #1b5658; }
.contact-form button:active { transform: translateY(1px); }
.contact-form button:focus-visible { outline: 3px solid var(--h4); outline-offset: 2px; }
@media (max-width: 640px) { .contact-form { grid-template-columns: 1fr; } }