:root {
  --ink: #1d2433; --muted: #5b6475; --line: #e3e6ec; --bg: #fbfbfc; --card: #fff;
  --accent: #2f5d50; --accent-ink: #fff; --accent-soft: #e8f0ed; --error: #a3321f;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
  color: var(--ink); background: var(--bg); line-height: 1.6;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #e7e9ee; --muted: #a2a9b8; --line: #2c3240; --bg: #141821; --card: #1b202b;
    --accent: #7fb8a6; --accent-ink: #10231d; --accent-soft: #1f2e2a; --error: #f08a74; }
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: var(--accent); }
.wrap { max-width: 720px; margin: 0 auto; padding: 0 20px; }
header.top { border-bottom: 1px solid var(--line); background: var(--card); }
header.top .wrap { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 650; font-size: 1.15rem; letter-spacing: .01em; }
.brand svg { width: 26px; height: 26px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: .95rem; }
nav a:hover { color: var(--ink); }
main { padding: 40px 0 56px; }
h1 { font-size: 1.9rem; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 1.2rem; margin: 32px 0 8px; }
.lead { color: var(--muted); font-size: 1.08rem; margin: 0 0 28px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 22px; }
.points { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.points li { padding-left: 26px; position: relative; }
.points li::before { content: ""; position: absolute; left: 4px; top: .6em; width: 9px; height: 9px; border-radius: 2px; background: var(--accent); }
form { display: grid; gap: 18px; }
fieldset { border: 0; padding: 0; margin: 0; display: grid; gap: 8px; }
legend, label.f { font-weight: 600; margin-bottom: 4px; }
.opt { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; cursor: pointer; }
.opt:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.opt input { margin-top: 5px; accent-color: var(--accent); }
textarea, input[type=email], select { width: 100%; font: inherit; color: inherit; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; }
textarea { min-height: 120px; resize: vertical; }
textarea:focus, input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.hint { color: var(--muted); font-size: .88rem; margin: 2px 0 0; }
button { font: inherit; font-weight: 600; background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 8px; padding: 11px 22px; cursor: pointer; justify-self: start; }
button:disabled { opacity: .6; cursor: default; }
.trap { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.msg { padding: 14px 16px; border-radius: 8px; background: var(--accent-soft); }
.msg.err { background: transparent; border: 1px solid var(--error); color: var(--error); }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .88rem; padding: 22px 0 40px; }
footer a { color: var(--muted); margin-right: 14px; white-space: nowrap; display: inline-block; }
.policy h2 { font-size: 1.08rem; }
.policy p, .policy li { color: var(--ink); }
[hidden] { display: none !important; }