:root {
  --bg: #f2f2f7; --card: #ffffff; --ink: #14181f; --muted: #5d6673; --line: #e3e6ec;
  --accent: #3390ec; --accent-ink: #ffffff; --soft: #dcebfd; --soft-ink: #1c5a9a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1520; --card: #17202d; --ink: #eef2f8; --muted: #9aa6b6; --line: #263244;
    --accent: #3d9bf2; --accent-ink: #06121f; --soft: #1d3350; --soft-ink: #a9d1fb;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.55 "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
}
a { color: var(--accent); }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 16px; }
header.top { padding: 20px 0 8px; display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 20px; color: var(--ink); text-decoration: none; }
nav a { color: var(--muted); text-decoration: none; margin-left: 16px; font-size: 15px; }
nav a:hover { color: var(--ink); }
.hero { padding: 32px 0 20px; }
.hero h1 { font-size: clamp(28px, 6vw, 40px); line-height: 1.15; margin: 0 0 12px; }
.hero p { margin: 0 0 20px; color: var(--muted); font-size: 18px; max-width: 620px; }
.btn {
  display: inline-block; background: var(--accent); color: var(--accent-ink); text-decoration: none;
  padding: 12px 22px; border-radius: 999px; font-weight: 600; border: 0;
}
.btn.soft { background: var(--soft); color: var(--soft-ink); }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); margin: 8px 0 28px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.card h3 { margin: 0; font-size: 20px; }
.card p { margin: 0; color: var(--muted); }
.price { font-size: 26px; font-weight: 700; }
.card .btn { margin-top: auto; text-align: center; }
h2 { font-size: 24px; margin: 28px 0 12px; }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0 0 28px; display: grid; gap: 10px; }
.steps li { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px 14px 52px; position: relative; }
.steps li::before {
  counter-increment: s; content: counter(s); position: absolute; left: 14px; top: 12px; width: 26px; height: 26px;
  border-radius: 50%; background: var(--soft); color: var(--soft-ink); font-weight: 700; text-align: center; line-height: 26px;
}
.doc { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 8px 22px 22px; margin: 16px 0 28px; }
.doc h1 { font-size: 28px; }
.doc h2 { font-size: 20px; }
footer { border-top: 1px solid var(--line); padding: 20px 0 36px; color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); margin-right: 16px; }

/* catalog */
.btn.big { padding: 14px 28px; font-size: 17px; }
.trust { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 8px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.trust li { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 10px 14px; font-size: 14px; color: var(--muted); }
h3.category { margin: 22px 0 10px; font-size: 14px; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }
.product { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 20px; margin: 0 0 14px; scroll-margin-top: 16px; }
.product > header { display: grid; grid-template-columns: auto 1fr auto; gap: 14px; align-items: center; margin-bottom: 8px; }
.product h3 { margin: 0; font-size: 21px; }
.product p { margin: 8px 0; }
.emoji { width: 48px; height: 48px; border-radius: 14px; background: var(--soft); display: grid; place-items: center; font-size: 24px; }
.tagline { margin: 2px 0 0 !important; color: var(--muted); }
.product .price { font-size: 24px; font-weight: 700; white-space: nowrap; }
.cols { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); margin: 14px 0; }
.cols h4 { margin: 0 0 6px; font-size: 15px; }
.cols ul { margin: 0; padding-left: 20px; color: var(--muted); }
.cols li { margin: 3px 0; }
.foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 8px; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip { background: var(--soft); color: var(--soft-ink); border-radius: 999px; padding: 4px 12px; font-size: 14px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 12px 16px; margin: 0 0 8px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin: 8px 0 2px; color: var(--muted); }
.docs a { margin-right: 16px; }
@media (max-width: 560px) {
  .product > header { grid-template-columns: auto 1fr; }
  .product .price { grid-column: 1 / -1; }
  .foot .btn { width: 100%; text-align: center; }
}