:root {
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #19282d;
  background: #f5f8f7;
  font-synthesis: none;
}

* { box-sizing: border-box; }

body { margin: 0; min-height: 100vh; }

button, input, select { font: inherit; }

.supplement-page {
  width: min(100%, 680px);
  min-height: calc(100vh - 64px);
  margin: 0 auto;
  padding: 26px 36px 64px;
  background: #fff;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 28px;
  border-bottom: 1px solid #e2e9e9;
}

.brand { display: flex; align-items: center; gap: 10px; font-size: 14px; }

.brand-mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 6px;
  color: #fff;
  background: #098c8c;
  font-size: 18px;
  font-weight: 900;
}

.page-tag { color: #718186; font-size: 12px; }

.form-view, .success-view { padding-top: 38px; }

.eyebrow {
  margin: 0 0 10px;
  color: #087f83;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0;
}

h1 { margin: 0; font-size: 30px; line-height: 1.3; }

.event-name {
  margin: 12px 0 32px;
  color: #62757a;
  font-size: 14px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

form { display: grid; gap: 9px; }

form label {
  margin-top: 13px;
  color: #34484d;
  font-size: 13px;
  font-weight: 700;
}

form input, form select {
  width: 100%;
  min-height: 50px;
  padding: 0 14px;
  border: 1px solid #cfdcdd;
  border-radius: 6px;
  outline: none;
  color: #19282d;
  background: #fff;
  font-size: 15px;
}

form input:focus, form select:focus {
  border-color: #098c8c;
  box-shadow: 0 0 0 3px rgba(9, 140, 140, 0.1);
}

form input::placeholder { color: #9ba9ab; }

.form-error { min-height: 18px; margin: 8px 0 0; color: #b53748; font-size: 13px; }

.submit-button {
  min-height: 52px;
  margin-top: 6px;
  border: 0;
  border-radius: 6px;
  color: #fff;
  background: #087f83;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.submit-button:disabled { opacity: 0.55; cursor: not-allowed; }

.success-view[hidden] { display: none; }

.success-view { text-align: center; padding-top: 110px; }

.success-icon {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin: 0 auto 26px;
  border-radius: 50%;
  color: #fff;
  background: #16a17e;
  font-size: 34px;
}

.success-view p:not(.eyebrow) { color: #62757a; line-height: 1.6; }

.success-owner { margin-top: 8px; }

.site-footer {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 18px;
  color: #718186;
  font-size: 11px;
}

.site-footer a { color: inherit; text-decoration: none; }

@media (max-width: 600px) {
  .supplement-page { min-height: calc(100vh - 64px); padding: 20px 22px 48px; }
  .form-view, .success-view { padding-top: 34px; }
  .success-view { padding-top: 100px; }
}