/* Kuznets Fit — лендинг (12.10.2026). Без внешних шрифтов и скриптов. */
:root {
  --bg: #fbf8f2;
  --card: #ffffff;
  --ink: #1d2a24;
  --muted: #5d6b64;
  --line: #e6e0d4;
  --green: #2f7d57;
  --green-dark: #23603f;
  --green-soft: #e4f2ea;
  --sun: #f4b63f;
  --radius: 22px;
  --shadow: 0 10px 30px rgba(29, 42, 36, .08);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #141a17; --card: #1c2420; --ink: #eef3ef; --muted: #a9b7af; --line: #2b3631;
    --green: #5cc290; --green-dark: #4aa57a; --green-soft: #1f3329; --shadow: none;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--green); }
img { max-width: 100%; display: block; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
header.top { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
header.top .wrap { display: flex; align-items: center; gap: 20px; height: 64px; }
.logo { font-weight: 800; font-size: 20px; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.logo span { color: var(--green); }
nav.links { display: flex; gap: 18px; margin-left: auto; }
nav.links a { color: var(--muted); text-decoration: none; font-size: 15px; }
nav.links a:hover { color: var(--ink); }
.btn { display: inline-flex; align-items: center; gap: 8px; background: var(--green); color: #fff; text-decoration: none; font-weight: 700; padding: 14px 22px; border-radius: 999px; border: 0; font-size: 17px; box-shadow: var(--shadow); }
.btn:hover { background: var(--green-dark); }
.btn.small { padding: 10px 16px; font-size: 15px; box-shadow: none; }
.btn.ghost { background: transparent; color: var(--green); border: 2px solid var(--green); box-shadow: none; }
.hero { padding: 56px 0 40px; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(32px, 5vw, 52px); line-height: 1.08; margin: 0 0 18px; letter-spacing: -.02em; }
.hero p.lead { font-size: 19px; color: var(--muted); margin: 0 0 26px; max-width: 560px; }
.hero .note { margin-top: 14px; font-size: 15px; color: var(--muted); }
.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.trio figure { margin: 0; background: var(--card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.trio figure:nth-child(2) { transform: translateY(-18px); }
.trio figcaption { padding: 8px 10px; font-size: 14px; font-weight: 700; text-align: center; }
section { padding: 56px 0; }
section h2 { font-size: clamp(26px, 3.6vw, 36px); margin: 0 0 10px; letter-spacing: -.01em; }
section p.sub { color: var(--muted); margin: 0 0 28px; max-width: 640px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.steps .num { width: 36px; height: 36px; border-radius: 50%; background: var(--green-soft); color: var(--green); display: grid; place-items: center; font-weight: 800; margin-bottom: 12px; }
.steps h3, .features h3 { margin: 0 0 6px; font-size: 19px; }
.steps p, .features p { margin: 0; color: var(--muted); font-size: 16px; }
.chat { display: grid; gap: 10px; max-width: 520px; }
.bubble { padding: 12px 16px; border-radius: 18px; font-size: 16px; line-height: 1.45; }
.bubble.me { justify-self: end; background: var(--green); color: #fff; border-bottom-right-radius: 6px; }
.bubble.bot { background: var(--card); border: 1px solid var(--line); border-bottom-left-radius: 6px; }
.demo { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }
.demo small { color: var(--muted); }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.features .ico { font-size: 26px; margin-bottom: 8px; }
.prices { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 860px; }
.price { position: relative; }
.price.main { border: 2px solid var(--green); }
.price .tag { position: absolute; top: -13px; left: 22px; background: var(--sun); color: #2b2100; font-size: 13px; font-weight: 800; padding: 3px 10px; border-radius: 999px; }
.price h3 { margin: 0 0 4px; font-size: 21px; }
.price .amount { font-size: 40px; font-weight: 800; letter-spacing: -.02em; margin: 6px 0 2px; }
.price .per { color: var(--muted); font-size: 15px; margin-bottom: 14px; }
.price ul { margin: 0 0 18px; padding-left: 20px; }
.price li { margin: 4px 0; }
.howpay ol { padding-left: 22px; margin: 0; }
.howpay li { margin: 8px 0; }
details { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 16px 20px; margin-bottom: 10px; }
details summary { cursor: pointer; font-weight: 700; list-style: none; }
details summary::-webkit-details-marker { display: none; }
details summary::after { content: "+"; float: right; color: var(--green); font-weight: 800; }
details[open] summary::after { content: "–"; }
details p { margin: 10px 0 0; color: var(--muted); }
.cta-end { text-align: center; }
.cta-end .card { padding: 40px 24px; background: var(--green-soft); border: 0; }
footer.bottom { border-top: 1px solid var(--line); padding: 32px 0 48px; font-size: 14px; color: var(--muted); }
footer.bottom .cols { display: grid; grid-template-columns: 1.3fr 1fr; gap: 24px; }
footer.bottom a { color: var(--muted); }
footer.bottom .legal a { display: inline-block; margin: 0 14px 6px 0; }
/* юр-страницы */
.doc { max-width: 820px; margin: 0 auto; padding: 40px 20px 64px; }
.doc h1 { font-size: clamp(28px, 4vw, 38px); line-height: 1.15; margin: 0 0 8px; }
.doc h2 { font-size: 22px; margin: 32px 0 8px; }
.doc h3 { font-size: 18px; margin: 22px 0 6px; }
.doc p, .doc li { font-size: 16px; }
.doc table { border-collapse: collapse; width: 100%; font-size: 15px; display: block; overflow-x: auto; }
.doc td, .doc th { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
.doc .back { display: inline-block; margin-bottom: 18px; font-size: 15px; }
@media (max-width: 860px) {
  .hero .wrap, .demo, .prices, footer.bottom .cols { grid-template-columns: 1fr; }
  .steps, .features { grid-template-columns: 1fr; }
  nav.links { display: none; }
  .hero { padding-top: 32px; }
}