/*
 * One stylesheet, no build step, no external requests. The OAuth review looks
 * at these pages directly, and a font or analytics beacon loaded from a third
 * party would contradict what the privacy policy says.
 */

:root {
  --bg: #fdfdfc;
  --panel: #ffffff;
  --text: #1d1d1b;
  --muted: #6b6b66;
  --line: #e4e4e0;
  --accent: #2f6f4f;
  --accent-soft: #eef4f0;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16171a;
    --panel: #1d1f23;
    --text: #e8e8e6;
    --muted: #9a9a95;
    --line: #2e3137;
    --accent: #7fc0a0;
    --accent-soft: #1f2a25;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Noto Sans JP',
    'Yu Gothic', Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  /* Japanese text sets better with slightly looser tracking at this size. */
  letter-spacing: 0.01em;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- header ---------- */

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 60px;
}

.brand {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--text);
  text-decoration: none;
}

.site-header nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
}

.site-header nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-header nav a:hover {
  color: var(--text);
}

/* ---------- hero ---------- */

.hero {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  margin: 0 0 20px;
  font-size: 34px;
  line-height: 1.45;
  letter-spacing: 0.01em;
}

.hero .lead {
  margin: 0 0 28px;
  font-size: 17px;
  color: var(--muted);
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.badges li {
  font-size: 13px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
}

/* ---------- sections ---------- */

section {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

section:last-of-type {
  border-bottom: none;
}

h2 {
  margin: 0 0 20px;
  font-size: 21px;
  line-height: 1.5;
}

h3 {
  margin: 28px 0 10px;
  font-size: 16px;
}

p {
  margin: 0 0 16px;
}

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

ul,
ol {
  margin: 0 0 16px;
  padding-left: 1.4em;
}

li {
  margin-bottom: 8px;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
  background: var(--accent-soft);
  border-radius: 4px;
  padding: 1px 5px;
}

/* ---------- data table ---------- */

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 16px;
  font-size: 15px;
}

.data-table th,
.data-table td {
  text-align: left;
  vertical-align: top;
  padding: 12px 14px;
  border: 1px solid var(--line);
}

.data-table th {
  background: var(--accent-soft);
  font-weight: 600;
  width: 34%;
}

/* ---------- steps ---------- */

.steps {
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding-left: 44px;
  margin-bottom: 20px;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 2px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid var(--line);
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.steps strong {
  display: block;
}

/* ---------- note ---------- */

.note {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 15px;
}

.note p:last-child {
  margin-bottom: 0;
}

/* ---------- legal pages ---------- */

.legal {
  padding: 56px 0 24px;
}

.legal h1 {
  font-size: 27px;
  margin: 0 0 8px;
}

.updated {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 36px;
}

.legal section {
  padding: 0;
  border: none;
  margin-bottom: 36px;
}

.legal h2 {
  font-size: 18px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--panel);
  padding: 32px 0;
  font-size: 14px;
  color: var(--muted);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 12px;
}

@media (max-width: 600px) {
  .hero {
    padding: 52px 0 40px;
  }

  .hero h1 {
    font-size: 27px;
  }

  .data-table th {
    width: 40%;
  }
}