:root {
  --bg: #f7f8fb; --panel: #fff; --ink: #191b21; --soft: #5f6473; --line: #e1e4ea;
  --accent: #3d6cf0; --accent-ink: #fff; --tint: #eaf0ff; --code: #f0f2f6;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #15161a; --panel: #1e2026; --ink: #ecedf1; --soft: #a3a7b4; --line: #30333c; --accent: #5b84f5; --tint: #232c45; --code: #262931; color-scheme: dark; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
header.top { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--ink); text-decoration: none; }
.brand img { width: 30px; height: 30px; }
nav a { color: var(--soft); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:hover { color: var(--ink); }
.hero { display: grid; grid-template-columns: 1fr 1.1fr; gap: 40px; align-items: center; padding: 40px 0 56px; }
.hero h1 { font-size: 46px; line-height: 1.1; margin: 0 0 16px; letter-spacing: -0.02em; }
.hero p.lead { font-size: 19px; color: var(--soft); margin: 0 0 24px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.btn { display: inline-block; padding: 12px 20px; border-radius: 10px; 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); }
.btn[aria-disabled="true"] { opacity: .55; pointer-events: none; }
.note { color: var(--soft); font-size: 14px; }
.shot { width: 100%; border-radius: 14px; border: 1px solid var(--line); box-shadow: 0 20px 50px rgba(20, 30, 60, .14); display: block; }
section { padding: 48px 0; }
section h2 { font-size: 30px; margin: 0 0 8px; letter-spacing: -0.01em; }
section .sub { color: var(--soft); margin: 0 0 28px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 20px; }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--soft); font-size: 15.5px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }
.plans { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.plan { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 26px; }
.plan.pro { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.plan h3 { margin: 0; font-size: 22px; }
.price { font-size: 34px; font-weight: 700; margin: 8px 0 2px; }
.price small { font-size: 15px; font-weight: 400; color: var(--soft); }
.plan ul { padding-left: 20px; margin: 16px 0 22px; }
.plan li { margin: 6px 0; }
.faq details { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin-bottom: 10px; }
.faq summary { font-weight: 600; cursor: pointer; }
.faq p { margin: 10px 0 0; color: var(--soft); }
code { background: var(--code); padding: 1px 6px; border-radius: 5px; font-size: 14.5px; }
.doc { max-width: 760px; padding: 24px 0 64px; }
.doc h1 { font-size: 36px; margin: 10px 0 18px; }
.doc h2 { font-size: 22px; margin: 28px 0 8px; }
.doc li { margin: 6px 0; }
footer { border-top: 1px solid var(--line); padding: 26px 0 40px; color: var(--soft); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 14px 24px; justify-content: space-between; }
footer a { color: var(--soft); }
@media (max-width: 820px) {
  .hero, .split, .plans { grid-template-columns: 1fr; }
  .grid3 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 36px; }
  nav a { margin-left: 12px; }
}