:root {
  --paper:#FBFBFC; --ink:#101619; --ink-2:#5A686D; --line:#DDE3E5; --accent:#0E4F5C; --accent-2:#E6F2F4;
  --good:#1a7f4b; --good-bg:#E4F4EA; --warn:#8a6d1f; --warn-bg:#F7F0DC; --radius:12px;
}
@media (prefers-color-scheme: dark) {
  :root { --paper:#121819; --ink:#E6EBEC; --ink-2:#98A8AD; --line:#26333A; --accent:#58BECD; --accent-2:#173036;
          --good:#5fc48a; --good-bg:#183324; --warn:#d6b35a; --warn-bg:#332c17; }
}
* { box-sizing:border-box }
html { scroll-behavior:smooth }
body { margin:0; background:var(--paper); color:var(--ink);
  font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,Roboto,sans-serif; -webkit-font-smoothing:antialiased }
a { color:var(--accent) }
.wrap { max-width:1040px; margin:0 auto; padding:0 20px }
header.top { display:flex; align-items:center; gap:22px; padding:18px 0; border-bottom:1px solid var(--line) }
.brand { font-weight:700; font-size:19px; letter-spacing:-0.01em; color:var(--ink); text-decoration:none; display:flex; align-items:center; gap:9px }
.brand .mark { width:26px; height:26px; border-radius:7px; background:var(--accent); display:inline-grid; place-items:center; color:#fff; font-size:15px; font-weight:800 }
nav.menu { display:flex; gap:18px; margin-left:auto; font-size:15px }
nav.menu a { color:var(--ink-2); text-decoration:none }
nav.menu a[aria-current] { color:var(--ink); font-weight:600 }
.btn { display:inline-block; padding:10px 18px; border-radius:9px; border:1px solid var(--accent); background:var(--accent); color:#fff !important;
  font-weight:600; text-decoration:none; font-size:15px; line-height:1.2 }
.btn.ghost { background:transparent; color:var(--accent) !important }
.btn.small { padding:7px 13px; font-size:14px }
.hero { padding:72px 0 44px; display:grid; grid-template-columns:1.2fr 1fr; gap:40px; align-items:center }
.hero h1 { font-size:44px; line-height:1.1; letter-spacing:-0.02em; margin:0 0 18px }
.hero p.lead { font-size:19px; color:var(--ink-2); margin:0 0 26px }
.cta { display:flex; gap:12px; flex-wrap:wrap; align-items:center }
.cta .fine { color:var(--ink-2); font-size:14px; width:100% }
section { padding:44px 0; border-top:1px solid var(--line) }
h2 { font-size:28px; letter-spacing:-0.015em; margin:0 0 10px }
h3 { font-size:18px; margin:0 0 6px }
p.sub { color:var(--ink-2); font-size:17px; margin:0 0 28px; max-width:700px }
.grid { display:grid; gap:18px; grid-template-columns:repeat(auto-fit, minmax(240px, 1fr)) }
.card { border:1px solid var(--line); border-radius:var(--radius); padding:20px 22px; background:color-mix(in srgb, var(--paper) 96%, var(--ink)) }
.card p { margin:6px 0 0; color:var(--ink-2); font-size:15px }
.demo { border:1px solid var(--line); border-radius:var(--radius); padding:18px; font-size:14px; background:color-mix(in srgb, var(--paper) 96%, var(--ink)) }
.demo .row { display:flex; justify-content:space-between; align-items:center; padding:10px 0; border-bottom:1px solid var(--line); gap:12px }
.demo .row:last-child { border-bottom:0 }
.demo .who { font-weight:600 }
.demo .who small { display:block; color:var(--ink-2); font-weight:400 }
.demo .addr { font-family:ui-monospace,SFMono-Regular,Menlo,monospace; font-size:13px }
.tier { font-size:11px; font-weight:700; letter-spacing:.06em; padding:3px 7px; border-radius:5px; white-space:nowrap }
.tier.A { background:var(--good-bg); color:var(--good) }
.tier.B { background:var(--warn-bg); color:var(--warn) }
.tier.free { background:var(--accent-2); color:var(--accent) }
ol.steps { counter-reset:s; list-style:none; padding:0; margin:0; display:grid; gap:14px }
ol.steps li { counter-increment:s; display:grid; grid-template-columns:40px 1fr; gap:14px; align-items:start }
ol.steps li::before { content:counter(s); width:34px; height:34px; border-radius:50%; background:var(--accent-2); color:var(--accent);
  display:grid; place-items:center; font-weight:700 }
table.plans { width:100%; border-collapse:collapse; font-size:15px }
table.plans th, table.plans td { padding:12px 10px; border-bottom:1px solid var(--line); text-align:center; vertical-align:top }
table.plans th:first-child, table.plans td:first-child { text-align:left }
table.plans thead th { font-size:14px; color:var(--ink-2); font-weight:600 }
table.plans .price { font-size:26px; font-weight:700; letter-spacing:-0.02em; display:block }
table.plans .price small { font-size:13px; font-weight:400; color:var(--ink-2) }
table.plans .name { font-size:17px; font-weight:700; display:block; color:var(--ink) }
.pill { display:inline-block; background:var(--accent-2); color:var(--accent); padding:2px 9px; border-radius:99px; font-size:12px; font-weight:600 }
.faq details { border-top:1px solid var(--line); padding:14px 0 }
.faq details:last-child { border-bottom:1px solid var(--line) }
.faq summary { cursor:pointer; font-weight:600; font-size:16px }
.faq details p { color:var(--ink-2); margin:10px 0 0 }
.prose { max-width:760px }
.prose h2 { font-size:22px; margin-top:34px }
.prose h3 { font-size:17px; margin-top:24px }
.prose p, .prose li { color:var(--ink-2) }
.prose li { margin:4px 0 }
.prose .meta { color:var(--ink-2); font-size:14px }
.callout { border-left:4px solid var(--accent); padding:12px 16px; background:var(--accent-2); border-radius:0 var(--radius) var(--radius) 0; margin:22px 0 }
.callout p { margin:0; color:var(--ink) }
footer.foot { border-top:1px solid var(--line); padding:26px 0 40px; color:var(--ink-2); font-size:14px; display:flex; flex-wrap:wrap; gap:8px 20px }
footer.foot a { color:var(--ink-2); text-decoration:none }
footer.foot .sp { flex:1 }
.check { list-style:none; padding:0; margin:0 }
.check li { padding-left:26px; position:relative; margin:6px 0; color:var(--ink-2) }
.check li::before { content:"✓"; position:absolute; left:0; color:var(--good); font-weight:700 }
.x li::before { content:"✗"; color:#b23b3b }
@media (max-width: 760px) {
  .hero { grid-template-columns:1fr; padding:44px 0 30px }
  .hero h1 { font-size:34px }
  nav.menu { gap:12px; font-size:14px }
  nav.menu .hide-sm { display:none }
  table.plans { font-size:13px }
  table.plans .price { font-size:20px }
}