:root {
  color-scheme: light;
  --paper: #f4f0e8;
  --sheet: #fffdf8;
  --ink: #202522;
  --muted: #6d746f;
  --line: #d8d4ca;
  --accent: #536d79;
  --accent-dark: #354e59;
  --accent-soft: #e7edef;
  --warm: #ede5d7;
  --shadow: 0 14px 38px rgba(32, 37, 34, .07);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 0%, rgba(255,255,255,.75), transparent 32rem),
    var(--paper);
  color: var(--ink);
  line-height: 1.8;
  letter-spacing: .015em;
}
button, input, select, textarea { font: inherit; }
button, select { cursor: pointer; }
[hidden] { display: none !important; }
.site-head, main, footer {
  width: min(820px, calc(100% - 40px));
  margin-inline: auto;
}
.site-head { padding: 46px 0 24px; }
.back {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
}
.back:hover { text-decoration: underline; text-underline-offset: 4px; }
.eyebrow, .kicker {
  margin: 26px 0 5px;
  color: var(--accent-dark);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}
h1 {
  margin: 0;
  font-family: ui-serif, "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(32px, 7vw, 54px);
  font-weight: 500;
  letter-spacing: .06em;
}
.lead { max-width: 610px; margin: 12px 0 0; font-size: 16px; }
.local-note { margin: 8px 0 0; color: var(--muted); font-size: 12px; }
main { padding-bottom: 64px; }
.panel {
  margin: 18px 0;
  padding: clamp(22px, 5vw, 38px);
  background: rgba(255, 253, 248, .92);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
}
.primary-panel { border-top: 3px solid var(--accent); }
.section-heading h2, .session-panel h2, .activation-panel h2 {
  margin: 0 0 16px;
  font-size: clamp(20px, 4vw, 27px);
  line-height: 1.45;
}
.section-heading .kicker, .session-panel .kicker, .activation-panel .kicker { margin-top: 0; }
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.stats div {
  min-width: 0;
  padding: 14px 12px;
  background: var(--accent-soft);
  border-radius: 12px;
}
.stats strong { display: block; font-size: 22px; line-height: 1.25; }
.stats span { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; }
.metric-note, .helper { color: var(--muted); font-size: 12px; }
.range-grid { margin: 22px 0; }
.range-grid label, .field {
  display: block;
  margin: 14px 0 6px;
  font-size: 13px;
  font-weight: 700;
}
.range-grid output {
  display: inline-grid;
  place-items: center;
  min-width: 2em;
  margin-left: 6px;
  padding: 1px 6px;
  background: var(--accent-soft);
  border-radius: 999px;
}
input[type="range"] { width: 100%; accent-color: var(--accent); }
.range-ends { display: flex; justify-content: space-between; color: var(--muted); font-size: 10px; }
input:not([type="range"]), select, textarea {
  width: 100%;
  border: 1px solid #bfc4bf;
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  padding: 10px 12px;
}
textarea { resize: vertical; line-height: 1.75; }
select { max-width: 240px; }
input:focus-visible, select:focus-visible, textarea:focus-visible, button:focus-visible, a:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(83, 109, 121, .32);
  outline-offset: 3px;
}
.button-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.button {
  min-height: 44px;
  margin-top: 14px;
  padding: 10px 17px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: transparent;
  color: var(--accent-dark);
  font-weight: 700;
}
.button:hover { background: var(--accent-soft); }
.button.primary { background: var(--accent); color: #fff; }
.button.primary:hover { background: var(--accent-dark); }
.button.quiet { border-color: transparent; color: var(--muted); }
.text-button {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.session-meta { display: flex; gap: 7px; margin-bottom: 14px; }
.tag {
  display: inline-block;
  padding: 3px 9px;
  background: var(--accent-soft);
  border-radius: 999px;
  color: var(--accent-dark);
  font-size: 11px;
}
.tag.subtle { background: var(--warm); color: #6e614d; }
.reading-text {
  margin: 24px 0;
  padding: clamp(18px, 4vw, 28px);
  background: #fff;
  border-left: 3px solid var(--accent);
  font-family: ui-serif, "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(16px, 3vw, 18px);
  line-height: 2.05;
  letter-spacing: .035em;
}
.key-ideas { display: grid; gap: 9px; margin: 20px 0; }
.key-idea {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 12px 14px;
  background: var(--accent-soft);
  border-radius: 10px;
}
.key-idea input { margin-top: .45em; accent-color: var(--accent); }
.recall-draft { margin: 16px 0; color: var(--muted); font-size: 13px; }
.recall-draft p { white-space: pre-wrap; color: var(--ink); }
.activation-text { margin: 8px 0 0; font-size: 18px; font-weight: 700; }
.recent-sessions { margin-top: 16px; border-top: 1px solid var(--line); }
.recent-row {
  display: grid;
  grid-template-columns: 92px 1fr auto;
  gap: 10px;
  padding: 9px 2px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
}
.recent-row span:last-child { color: var(--muted); text-align: right; }
.info-panel { box-shadow: none; background: rgba(255,255,255,.45); }
.info-panel summary { cursor: pointer; color: var(--muted); font-size: 13px; }
.info-body { padding-top: 10px; font-size: 13px; }
.status { min-height: 1.8em; color: var(--accent-dark); font-size: 13px; }
footer {
  padding: 0 0 54px;
  color: var(--muted);
  font-family: ui-serif, "Yu Mincho", serif;
  font-size: 13px;
}

@media (max-width: 640px) {
  .site-head, main, footer { width: min(100% - 24px, 820px); }
  .site-head { padding-top: 26px; }
  .panel { padding: 20px 17px; border-radius: 13px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .recent-row { grid-template-columns: 78px 1fr; }
  .recent-row span:last-child { grid-column: 2; text-align: left; }
  .button { width: 100%; }
  .button-row .button { flex: 1 1 100%; margin-top: 4px; }
  .reading-text { margin-inline: -2px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}