:root {
  --text: #000020;
  --text-soft: #5c5c72;
  --line: #c5c5d0;
  --accent: #00b860;
  --navy: #000020;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  color: var(--text);
  font-family: "Plus Jakarta Sans", ui-sans-serif, system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  background: #0c3d2e;
}

.bg {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  background: #0b3a2c;
}

.blob {
  position: absolute;
  border-radius: 50%;
  display: block;
}

.b1 { width: 520px; height: 280px; background: #146b4a; top: -80px; left: -120px; transform: rotate(-18deg); }
.b2 { width: 180px; height: 180px; background: #1f8f62; top: 18%; left: 8%; }
.b3 { width: 640px; height: 420px; background: #083528; right: -180px; top: 8%; transform: rotate(24deg); border-radius: 46% 54% 48% 52%; }
.b4 { width: 280px; height: 280px; background: #d7f3e4; right: 6%; bottom: 10%; opacity: 0.85; }
.b5 { width: 90px; height: 90px; background: #7ddec0; left: 18%; bottom: 14%; }

.sheet {
  position: relative;
  width: min(640px, calc(100% - 32px));
  margin: 48px auto 64px;
  background: #fff;
  box-shadow: 0 8px 28px rgba(0, 0, 32, 0.18);
}

.sheet-head {
  padding: 28px 28px 22px;
  background: #00b860;
  color: #000020;
}

h1 {
  margin: 0 0 8px;
  font-size: 28px;
  line-height: 1.2;
  font-weight: 700;
}

.sheet-head p {
  margin: 0;
  font-size: 14px;
  line-height: 1.45;
}

.sheet-body { padding: 22px 28px 32px; }

.req-note {
  margin: 0 0 22px;
  color: #c0392b;
  font-size: 13px;
}

label {
  display: block;
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 600;
}

label span,
.req-note span { color: #c0392b; }

input {
  display: block;
  width: 100%;
  height: 36px;
  margin: 0 0 22px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: #fff;
  color: var(--text);
  font: inherit;
  outline: none;
}

input:focus { border-color: #00b860; }

button {
  height: 36px;
  padding: 0 20px;
  border: 0;
  border-radius: 4px;
  background: #00b860;
  color: #000020;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

button:hover { filter: brightness(0.96); }
button:disabled { opacity: 0.55; cursor: not-allowed; }

.error {
  margin: -8px 0 14px;
  color: #c0392b;
  font-size: 13px;
}

#thanks .sheet-head { min-height: 140px; }

@media (max-width: 640px) {
  .sheet { margin-top: 24px; }
  .sheet-head, .sheet-body { padding-left: 18px; padding-right: 18px; }
  h1 { font-size: 24px; }
}