:root {
  --bg: #ffffff;
  --bg-soft: #f4f5f8;
  --ink: #141824;
  --muted: #586074;
  --line: #e3e6ee;
  --brand: #1d2b53;
  --accent: #2f7d7a;
  --accent-ink: #ffffff;
  --pink: #c2049a;
  --radius: 16px;
  --max: 1080px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f121a;
    --bg-soft: #171b26;
    --ink: #eef0f5;
    --muted: #a6adbf;
    --line: #262b39;
    --brand: #c9d3f2;
    --accent: #5cc3bd;
    --accent-ink: #0f121a;
    --pink: #f07ad4;
  }
}
* { 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); }
a:hover { text-decoration-thickness: 2px; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* header */
.top { border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; letter-spacing: -0.01em; }
.mark { width: 30px; height: 30px; flex: none; }
.nav { display: flex; gap: 20px; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 500; font-size: 15px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }

/* hero */
.hero { padding: 72px 0 56px; }
.eyebrow { color: var(--accent); font-weight: 600; font-size: 14px; letter-spacing: 0.06em; text-transform: uppercase; margin: 0 0 12px; }
h1 { font-size: clamp(32px, 5vw, 52px); line-height: 1.1; letter-spacing: -0.025em; margin: 0 0 18px; max-width: 18ch; }
.lead { font-size: clamp(18px, 2.2vw, 21px); color: var(--muted); max-width: 46ch; margin: 0 0 28px; }
h2 { font-size: clamp(24px, 3vw, 32px); letter-spacing: -0.02em; line-height: 1.2; margin: 0 0 12px; }
h3 { font-size: 19px; margin: 0 0 6px; }
.btn {
  display: inline-block; padding: 12px 20px; border-radius: 999px; background: var(--accent); color: var(--accent-ink);
  text-decoration: none; font-weight: 600;
}
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btns { display: flex; gap: 12px; flex-wrap: wrap; }

/* sections */
section { padding: 56px 0; }
.soft { background: var(--bg-soft); }
.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.soft .card { background: var(--bg); }
.card p { margin: 0; color: var(--muted); }
.product { display: grid; grid-template-columns: auto 1fr; gap: 20px; align-items: start; }
.product img { width: 84px; height: 84px; border-radius: 20px; }
.tag { display: inline-block; font-size: 13px; font-weight: 600; padding: 2px 10px; border-radius: 999px; background: var(--bg-soft); color: var(--muted); border: 1px solid var(--line); }
.tag.live { color: var(--pink); }
ul.ticks { padding: 0; margin: 14px 0 0; list-style: none; display: grid; gap: 8px; }
ul.ticks li { padding-left: 26px; position: relative; color: var(--ink); }
ul.ticks li::before { content: ""; position: absolute; left: 2px; top: 9px; width: 12px; height: 7px; border-left: 2.5px solid var(--accent); border-bottom: 2.5px solid var(--accent); transform: rotate(-45deg); }

/* long text pages */
.doc { max-width: 760px; padding: 48px 20px 72px; margin: 0 auto; }
.doc h1 { font-size: clamp(30px, 4vw, 40px); }
.doc h2 { font-size: 22px; margin-top: 34px; }
.doc .muted { color: var(--muted); }
details { border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin: 10px 0; background: var(--bg); }
summary { cursor: pointer; font-weight: 600; }
details p { color: var(--muted); margin: 10px 0 0; }

/* footer */
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
footer a { color: var(--muted); }

@media (max-width: 560px) {
  .hero { padding: 48px 0 36px; }
  section { padding: 40px 0; }
  .product { grid-template-columns: 1fr; }
}

.app-hero { display: grid; gap: 28px; grid-template-columns: auto 1fr; align-items: center; }
@media (max-width: 560px) {
  .app-hero { grid-template-columns: 1fr; gap: 18px; }
  .app-hero img { width: 84px; height: 84px; border-radius: 20px !important; }
}