:root {
  --paper: #fbfaf7;
  --ink: #101418;
  --signal: #ff5a36;
  --link: #2f6fed;
  --success: #0e7c5a;
  --fog: #6b7280;
  --caution: #c0362c;
  --line: #e6e4de;
  --card: #ffffff;
}

* { box-sizing: border-box; }

html { color-scheme: light; }

body {
  margin: 0;
  font: 16px/1.55 Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--paper);
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

header, main, footer { max-width: 880px; margin: 0 auto; padding: 0 20px; }

header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 20px;
  padding-bottom: 20px;
}

.mark { width: 40px; height: 40px; border-radius: 9px; flex: none; }

.wordmark { font-weight: 700; font-size: 20px; letter-spacing: -0.01em; color: var(--ink); }
.wordmark:hover { text-decoration: none; }
.wordmark b { color: var(--signal); font-weight: 700; }

nav { margin-left: auto; display: flex; gap: 18px; flex-wrap: wrap; }
nav a { color: var(--fog); }
nav a[aria-current] { color: var(--ink); }

main { padding-top: 24px; padding-bottom: 64px; }

h1 { font-size: clamp(30px, 5vw, 44px); line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 12px; }
h2 { font-size: 22px; margin: 40px 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 17px; margin: 0 0 6px; }

.lead { font-size: 19px; color: var(--fog); margin: 0 0 28px; max-width: 620px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 20px;
}

.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }

.price { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; }
.price small { font-size: 14px; color: var(--fog); font-weight: 400; }

ul.plain { list-style: none; padding: 0; margin: 10px 0 0; color: var(--fog); }
ul.plain li { padding: 3px 0; }

.muted { color: var(--fog); }
.small { font-size: 14px; }

.notice {
  border-left: 3px solid var(--signal);
  padding: 10px 14px;
  background: #fff7f4;
  border-radius: 0 10px 10px 0;
  margin: 18px 0;
}

.button {
  display: inline-block;
  padding: 11px 18px;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  border: 0;
  cursor: pointer;
  font: inherit;
}
.button:hover { text-decoration: none; opacity: .92; }
.button.secondary { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.button[disabled] { opacity: .5; cursor: default; }

form label { display: block; font-weight: 600; margin: 14px 0 4px; }
form input, form textarea, form select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font: inherit;
  background: #fff;
  color: var(--ink);
}
form textarea { min-height: 96px; resize: vertical; }
form .hint { color: var(--fog); font-size: 14px; margin-top: 4px; }
form .check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; margin-top: 18px; }
form .check input { width: auto; margin-top: 4px; }

.status { margin-top: 14px; font-weight: 600; }
.status.ok { color: var(--success); }
.status.error { color: var(--caution); }

dl.spec { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; }
dl.spec dt { color: var(--fog); }
dl.spec dd { margin: 0; }

code { font: 14px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; background: #f1efe9; padding: 1px 5px; border-radius: 5px; }

footer {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  padding-bottom: 40px;
  color: var(--fog);
  font-size: 14px;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

article.legal h2 { font-size: 19px; margin-top: 28px; }
article.legal p, article.legal li { max-width: 720px; }
.version { color: var(--fog); font-size: 14px; }