:root {
  --paper: #fbfbfa;
  --ink: #1a1a22;
  --ink-soft: #565663;
  --rule: #e6e6ea;
  --panel: #ffffff;
  --indigo: #3b3bd6;
  --indigo-deep: #2a2aa0;
  --amber: #b06a00;
  --red: #b4243a;
  --mono: "IBM Plex Mono", "SFMono-Regular", "JetBrains Mono", ui-monospace, "Cascadia Mono", Menlo, Consolas, monospace;
  --sans: "Inter", "Helvetica Neue", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
}

a { color: var(--indigo-deep); text-underline-offset: 2px; }
a:hover { color: var(--indigo); }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--indigo);
  outline-offset: 2px;
}

.wrap { width: min(960px, 100% - 40px); margin: 0 auto; }

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}
.logo {
  display: flex; align-items: center; gap: 9px;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}
.logo svg { width: 22px; height: 22px; }
.bar nav { display: flex; gap: 20px; font-size: 14px; font-family: var(--mono); }
.bar nav a { color: var(--ink-soft); text-decoration: none; }
.bar nav a:hover, .bar nav a[aria-current] { color: var(--ink); }

.split {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 64px;
  align-items: center;
  min-height: 70vh;
  padding: 40px 0;
}

.tag {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0 0 18px;
}
.tag b { color: var(--indigo); font-weight: 600; }

h1.title {
  margin: 0;
  font-size: clamp(34px, 5.5vw, 56px);
  line-height: 1.04;
  font-weight: 650;
  letter-spacing: -0.02em;
}
.sub { max-width: 32em; margin: 20px 0 30px; color: var(--ink-soft); font-size: 18px; }

.meter {
  font-family: var(--mono);
  font-size: 13px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  overflow: hidden;
  max-width: 420px;
}
.meter .row {
  display: flex;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--rule);
}
.meter .row:last-child { border-bottom: 0; }
.meter .row span:last-child { color: var(--ink-soft); }
.gauge { height: 6px; background: var(--rule); }
.gauge i { display: block; height: 100%; width: 41%; background: var(--indigo); }

.card {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 26px;
  box-shadow: 0 1px 0 var(--rule);
}
.card h2 { margin: 0 0 4px; font-size: 19px; }
.card p.hint { margin: 0 0 18px; font-size: 14px; color: var(--ink-soft); }
label { display: block; font-family: var(--mono); font-size: 13px; margin: 14px 0 6px; color: var(--ink-soft); }
input {
  width: 100%;
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 15px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 7px;
}
input:focus { border-color: var(--indigo); background: #fff; }
button {
  width: 100%;
  margin-top: 20px;
  padding: 11px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--indigo);
  border: 0;
  border-radius: 7px;
  cursor: pointer;
}
button:hover { background: var(--indigo-deep); }
button[disabled] { opacity: 0.7; cursor: progress; }
.alert {
  margin: 0 0 6px;
  padding: 9px 12px;
  font-size: 14px;
  color: var(--red);
  background: #fae9ec;
  border-radius: 7px;
}
.sso { margin: 16px 0 0; font-size: 13px; color: var(--ink-soft); font-family: var(--mono); }

.doc { max-width: 42em; padding: 30px 0 72px; }
.doc h1 { font-size: 36px; letter-spacing: -0.02em; margin: 0 0 20px; }
.doc h2 { font-size: 19px; margin: 32px 0 8px; }
.doc code { font-family: var(--mono); font-size: 0.9em; background: #f0f0f3; padding: 1px 5px; border-radius: 4px; }
.doc ul { padding-left: 1.3em; }
.doc li { margin-bottom: 8px; }

.end {
  padding: 24px 0 40px;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
}
.end a { color: var(--ink-soft); }

@media (max-width: 780px) {
  .split { grid-template-columns: 1fr; gap: 36px; min-height: 0; }
  .bar nav { gap: 14px; }
}