:root {
  color-scheme: light dark;
  --bg: #f4f6f3;
  --card: #fff;
  --ink: #18251f;
  --muted: #4b5c52;
  --line: #c6d1c9;
  --accent: #156443;
  --button: #fff;
  --notice: #e6eee8;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font:
    16px/1.6 system-ui,
    sans-serif;
}
main {
  max-width: 920px;
  margin: 0 auto;
  padding: 64px 24px;
}
h1 {
  font-size: clamp(42px, 7vw, 72px);
  line-height: 1.08;
  letter-spacing: -0.05em;
  margin: 20px 0;
}
h2,
legend {
  font-size: 23px;
  font-weight: 650;
  letter-spacing: -0.02em;
}
.eyebrow {
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.16em;
  color: var(--accent);
}
.intro {
  max-width: 670px;
  font-size: 20px;
  color: var(--muted);
}
section,
fieldset {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px;
  margin: 28px 0;
}
fieldset {
  min-width: 0;
}
legend {
  padding: 0 8px;
}
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
label {
  display: block;
  font-weight: 600;
  font-size: 14px;
}
input,
select {
  display: block;
  width: 100%;
  padding: 12px;
  margin-top: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--ink);
  font: inherit;
}
small {
  display: block;
  color: var(--muted);
  font-weight: 400;
}
button {
  padding: 13px 18px;
  border: 1px solid var(--accent);
  border-radius: 9px;
  background: var(--accent);
  color: var(--button);
  font: 600 15px system-ui;
  cursor: pointer;
}
button:disabled {
  opacity: 0.55;
  cursor: default;
}
#connections {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.provider-note {
  margin: 20px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  background: var(--notice);
}
.check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 20px 0;
  font-weight: 400;
}
.check input {
  width: 18px;
  height: 18px;
  margin: 4px 0;
  flex-shrink: 0;
}
#notice {
  padding: 16px 20px;
  background: var(--notice);
  border-radius: 10px;
}
footer {
  border-top: 1px solid var(--line);
  margin-top: 42px;
  padding-top: 20px;
  color: var(--muted);
  font-size: 13px;
}
details {
  margin-top: 24px;
  color: var(--muted);
}
summary {
  cursor: pointer;
}
a {
  color: var(--accent);
}
:focus-visible {
  outline: 3px solid #bc7800;
  outline-offset: 4px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101b16;
    --card: #19281f;
    --ink: #eef5f0;
    --muted: #b6c8bc;
    --line: #42574a;
    --accent: #8bdfb4;
    --button: #10271b;
    --notice: #253b2d;
  }
}
@media (max-width: 600px) {
  main {
    padding: 32px 16px;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  section,
  fieldset {
    padding: 20px;
  }
  #connections {
    flex-direction: column;
  }
}