:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1d2330;
  --muted: #6b7280;
  --line: #e3e6eb;
  --accent: #2456d6;
  --accent-text: #ffffff;
  --max: #6c3df4;
  --error: #c62828;
  --notice-bg: #e8f4ea;
  --alert-bg: #fdecec;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.wrap { max-width: 720px; margin: 0 auto; padding: 0 16px; }

.top { background: var(--card); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; justify-content: space-between; align-items: center; min-height: 56px; gap: 12px; }
.brand { color: var(--text); text-decoration: none; font-weight: 600; }

main { padding-bottom: 48px; }
h1 { font-size: 1.6rem; margin: 24px 0 8px; }
h2 { font-size: 1.25rem; margin: 0 0 8px; }
h3 { font-size: 1.05rem; margin: 16px 0 4px; }

a { color: var(--accent); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  margin: 16px 0;
}

.participant header h3 { margin: 0; }

.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-text);
  border: 0;
  border-radius: 8px;
  padding: 12px 20px;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.btn-max { background: var(--max); }
.btn-secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }

button.link {
  background: none; border: 0; padding: 0;
  color: var(--accent); font: inherit; text-decoration: underline; cursor: pointer;
}
form.inline { display: inline; }

.login-options { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; margin: 16px 0; }

.form .field { display: block; margin-bottom: 16px; }
.form .field span { display: block; font-weight: 600; margin-bottom: 4px; }
.form input[type=text], .form input[type=tel], .form input[type=email], .form select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  background: #fff;
}
.form .check { display: flex; gap: 8px; align-items: flex-start; margin-bottom: 16px; }
.form .check input { margin-top: 5px; }
.has-error input, .has-error select { border-color: var(--error); }
.error { color: var(--error); display: block; }

.muted { color: var(--muted); }
.small { font-size: 0.9rem; }
.notice { background: var(--notice-bg); padding: 12px 16px; border-radius: 8px; }
.alert { background: var(--alert-bg); padding: 12px 16px; border-radius: 8px; }

.code { font: 700 2rem/1.2 ui-monospace, Consolas, monospace; letter-spacing: 0.1em; margin: 8px 0; }
.code-inline { font-family: ui-monospace, Consolas, monospace; font-weight: 700; letter-spacing: 0.05em; }

.steps { padding-left: 20px; }
.steps li { margin-bottom: 12px; }
.fallback { border-top: 1px solid var(--line); padding-top: 12px; margin-top: 12px; }

ul.plain { list-style: none; padding: 0; }
.prose ul { padding-left: 20px; }