/* ═══════════════════════════════════════════════════════════════
   KYU PROGRAM 級 — Tamashi Dojo grading syllabus
   ═══════════════════════════════════════════════════════════════ */

.kyu {
  max-width: 1240px;
  margin: 28px auto 60px;
  padding: 0 32px;
  font-family: var(--ff-serif);
  color: var(--ink);
}

/* ─── Header ─── */
.kyu__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: start;
  border-top: 1px solid var(--paper-edge);
  border-bottom: 1px solid var(--paper-edge);
  padding: 26px 0 22px;
  margin-bottom: 22px;
}
.kyu__kicker {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--vermillion);
  margin-bottom: 8px;
}
.kyu__title {
  font-family: var(--ff-serif);
  font-weight: 500;
  font-size: 34px;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}
.kyu__sub {
  font-family: var(--ff-sans);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 12px;
}
.kyu__note {
  font-size: 14px;
  line-height: 1.62;
  color: var(--ink-soft);
  max-width: 74ch;
  margin: 0;
  text-wrap: pretty;
}

.kyu__belts {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 168px;
}
.kyu-belt {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--paper-edge);
  background: var(--paper-deep);
  border-radius: 2px;
}
.kyu-belt__swatch {
  width: 26px;
  height: 8px;
  border-radius: 1px;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.18);
  flex: 0 0 auto;
}
.kyu-belt__copy { display: flex; flex-direction: column; line-height: 1.25; }
.kyu-belt__copy b { font-size: 13px; font-weight: 600; }
.kyu-belt__copy span {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ─── The four components ─── */
.kyu__components {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}
.kyu-comp {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--paper-edge);
  border-left: 2px solid var(--vermillion);
  background: var(--paper-deep);
  border-radius: 2px;
}
.kyu-comp__kanji {
  grid-row: 1 / 3;
  font-family: var(--ff-kanji);
  font-size: 26px;
  line-height: 1;
  color: var(--ink-faint);
  align-self: center;
}
.kyu-comp__label {
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 3px;
}
.kyu-comp__text {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-soft);
}

.kyu__ranks-note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 88ch;
  margin: 0 0 22px;
  padding-left: 12px;
  border-left: 2px solid var(--paper-edge);
}

/* ─── Toolbar ─── */
.kyu__toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 16px;
}
.kyu__search {
  flex: 1 1 260px;
  min-width: 220px;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--paper-deep);
  border: 1px solid var(--paper-edge);
  border-radius: 3px;
  padding: 0 12px;
}
.kyu__search svg { color: var(--ink-faint); flex: 0 0 auto; }
.kyu__search input {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  padding: 10px 0;
  font-family: var(--ff-serif);
  font-size: 14px;
  color: var(--ink);
}
.kyu__search input::-webkit-search-cancel-button { display: none; }
.kyu__clear {
  background: none;
  border: none;
  color: var(--ink-faint);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  padding: 0 2px;
}
.kyu__clear:hover { color: var(--vermillion); }

.kyu__seg {
  display: flex;
  border: 1px solid var(--paper-edge);
  border-radius: 3px;
  overflow: hidden;
}
.kyu__seg button {
  background: var(--paper-deep);
  border: none;
  border-right: 1px solid var(--paper-edge);
  padding: 9px 16px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  cursor: pointer;
}
.kyu__seg button:last-child { border-right: none; }
.kyu__seg button.on { background: var(--ink); color: var(--paper); }

.kyu__ctrl {
  background: var(--paper-deep);
  border: 1px solid var(--paper-edge);
  border-radius: 3px;
  padding: 9px 14px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  cursor: pointer;
}
.kyu__ctrl:hover { color: var(--ink); border-color: var(--ink-faint); }

/* ─── Rank rail ─── */
.kyu__rail {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: stretch;
  gap: 6px;
  padding: 10px 0;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--paper-edge);
  background: var(--paper);
  overflow-x: auto;
  scrollbar-width: none;
}
.kyu__rail::-webkit-scrollbar { display: none; }
.kyu__rail-rule {
  flex: 0 0 1px;
  align-self: stretch;
  background: var(--paper-edge);
  margin: 0 6px;
}
.kyu-chip {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  min-width: 68px;
  padding: 9px 12px;
  background: var(--paper-deep);
  border: 1px solid var(--paper-edge);
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.kyu-chip:hover { border-color: var(--ink-faint); }
.kyu-chip__kanji {
  font-family: var(--ff-kanji);
  font-size: 22px;
  line-height: 1;
  color: var(--ink-mute);
}
.kyu-chip__label {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  white-space: nowrap;
}
.kyu-chip.on {
  background: var(--ink);
  border-color: var(--ink);
}
.kyu-chip.on .kyu-chip__kanji { color: var(--vermillion); }
.kyu-chip.on .kyu-chip__label { color: var(--paper); }
.kyu-chip--foundation { min-width: 118px; }

/* ─── Panel ─── */
.kyu-panel {
  border: 1px solid var(--paper-edge);
  background: var(--paper-deep);
  border-radius: 3px;
  padding: 0 0 24px;
  margin-bottom: 28px;
  scroll-margin-top: 90px;
}
.kyu-panel__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
  padding: 22px 26px;
  border-bottom: 1px solid var(--paper-edge);
  background:
    linear-gradient(180deg, rgba(178, 53, 28, 0.05), transparent 70%);
}
.kyu-panel__kanji {
  font-family: var(--ff-kanji);
  font-size: 54px;
  line-height: 0.9;
  color: var(--vermillion);
  opacity: 0.85;
}
.kyu-panel__eyebrow {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 4px;
}
.kyu-panel__title {
  font-family: var(--ff-serif);
  font-size: 26px;
  font-weight: 500;
  margin: 0 0 4px;
}
.kyu-panel__theme {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0;
  max-width: 62ch;
}
.kyu-panel__stats { display: flex; gap: 20px; }
.kyu-panel__stats div { display: flex; flex-direction: column; align-items: flex-end; }
.kyu-panel__stats b { font-family: var(--ff-serif); font-size: 24px; font-weight: 500; line-height: 1; }
.kyu-panel__stats span {
  font-family: var(--ff-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 3px;
}
.kyu-panel__head--foundation .kyu-panel__kanji { color: var(--jade); }

/* ─── Foundation reminder strip ─── */
.kyu-reminder {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  width: calc(100% - 52px);
  margin: 20px 26px 4px;
  padding: 12px 16px;
  text-align: left;
  background: var(--paper);
  border: 1px dashed var(--paper-edge);
  border-radius: 2px;
  cursor: pointer;
}
.kyu-reminder:hover { border-color: var(--vermillion); }
.kyu-reminder__kanji {
  font-family: var(--ff-kanji);
  font-size: 22px;
  color: var(--ink-faint);
}
.kyu-reminder__body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.kyu-reminder__label {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.kyu-reminder__text { font-size: 13px; line-height: 1.45; color: var(--ink-soft); }
.kyu-reminder__cta {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--vermillion);
  white-space: nowrap;
}

/* ─── Section (Taijutsu / Buki / Knowledge) ─── */
.kyu-section { padding: 22px 26px 0; }
.kyu-section__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.kyu-section__kanji {
  font-family: var(--ff-kanji);
  font-size: 18px;
  color: var(--vermillion);
}
.kyu-section__label {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0;
  color: var(--ink);
}
.kyu-section__rule { flex: 1; height: 1px; background: var(--paper-edge); }
.kyu-section__note {
  font-size: 13px;
  font-style: italic;
  color: var(--ink-mute);
  margin: 0 0 14px;
}

/* ─── Groups ─── */
.kyu-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 14px;
}
.kyu-group {
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-radius: 2px;
  padding: 14px 16px 12px;
}
.kyu-group__head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.kyu-group__label {
  font-family: var(--ff-serif);
  font-size: 16px;
  font-weight: 600;
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
}
.kyu-group__ct {
  font-family: var(--ff-mono);
  font-size: 10px;
  padding: 2px 6px;
  border: 1px solid var(--paper-edge);
  border-radius: 2px;
  color: var(--ink-faint);
}
.kyu-group__note {
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-soft);
  margin: 0 0 10px;
}
.kyu-group__empty {
  font-size: 12.5px;
  font-style: italic;
  color: var(--ink-faint);
  margin: 0;
}
.kyu-group__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
}
.kyu-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  align-items: baseline;
  padding: 5px 6px;
  border-radius: 2px;
}
.kyu-item:nth-child(odd) { background: rgba(150, 135, 113, 0.07); }
.kyu-item.is-hit { background: rgba(178, 53, 28, 0.16); box-shadow: inset 2px 0 0 var(--vermillion); }
.kyu-item__num {
  font-family: var(--ff-mono);
  font-size: 10px;
  color: var(--ink-faint);
}
.kyu-item__body { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px; min-width: 0; }
.kyu-item__name { font-size: 14px; }
.kyu-item__note {
  font-size: 12px;
  font-style: italic;
  color: var(--ink-mute);
}
.kyu-item__ryu {
  font-family: var(--ff-mono);
  font-size: 9.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 6px;
  border: 1px solid var(--paper-edge);
  border-radius: 2px;
  background: var(--paper-deep);
  color: var(--ink-mute);
  cursor: pointer;
  white-space: nowrap;
}

/* ─── Cross-reference link ─── */
.kyu-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  padding: 2px 0;
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--vermillion);
  cursor: pointer;
  border-bottom: 1px solid transparent;
}
.kyu-link:hover { border-bottom-color: var(--vermillion); }
.kyu-link svg { transition: transform 0.15s; }
.kyu-link:hover svg { transform: translateX(2px); }

/* ─── Knowledge Q&A ─── */
.kyu-qa { display: grid; gap: 6px; }
.kyu-qa__row {
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-radius: 2px;
  overflow: hidden;
}
.kyu-qa__row.is-open { border-color: var(--ink-faint); }
.kyu-qa__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 12px 14px;
  cursor: pointer;
}
.kyu-qa__num {
  font-family: var(--ff-mono);
  font-size: 11px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 1px solid var(--paper-edge);
  border-radius: 50%;
  color: var(--ink-faint);
}
.kyu-qa__row.is-open .kyu-qa__num {
  background: var(--vermillion);
  border-color: var(--vermillion);
  color: var(--paper);
}
.kyu-qa__text {
  font-family: var(--ff-serif);
  font-size: 15px;
  font-weight: 500;
}
.kyu-qa__chev { color: var(--ink-faint); transition: transform 0.18s; }
.kyu-qa__chev.open { transform: rotate(180deg); }
.kyu-qa__a {
  margin: 0;
  padding: 0 14px 14px 48px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-soft);
  text-wrap: pretty;
}

/* ─── Foundation blocks ─── */
.kyu-blocks { display: grid; gap: 18px; padding: 22px 26px 0; }
.kyu-block {
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-left: 2px solid var(--jade);
  border-radius: 2px;
  padding: 14px 16px;
}
.kyu-block__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.kyu-block__title {
  font-family: var(--ff-serif);
  font-size: 18px;
  font-weight: 600;
  margin: 0;
  flex: 1 1 auto;
}
.kyu-block__text {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 0 0 12px;
  max-width: 74ch;
}
.kyu-block__groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}
.kyu-fgroup__label {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--vermillion);
  padding-bottom: 5px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--paper-edge);
}
.kyu-fgroup__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 3px;
  font-size: 13.5px;
}
.kyu-fgroup__list li { line-height: 1.4; }
.kyu-fgroup__list li.is-hit {
  background: rgba(178, 53, 28, 0.16);
  box-shadow: inset 2px 0 0 var(--vermillion);
  padding-left: 6px;
  border-radius: 2px;
}
.kyu-fgroup__list em { color: var(--ink-mute); font-size: 12px; }

.kyu-notes { padding: 20px 26px 0; display: grid; gap: 8px; }
.kyu-note {
  margin: 0;
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.55;
  font-style: italic;
  color: var(--ink-soft);
  background: var(--paper);
  border-left: 2px solid var(--gold);
  border-radius: 2px;
}

/* ─── Search results ─── */
.kyu-results { display: grid; gap: 6px; margin-bottom: 24px; }
.kyu-results__count {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 6px;
}
.kyu-result {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  width: 100%;
  text-align: left;
  padding: 12px 14px;
  background: var(--paper-deep);
  border: 1px solid var(--paper-edge);
  border-radius: 2px;
  cursor: pointer;
}
.kyu-result:hover { border-color: var(--vermillion); }
.kyu-result__rank { display: flex; align-items: center; gap: 10px; }
.kyu-result__rank b { font-family: var(--ff-kanji); font-size: 24px; color: var(--vermillion); font-weight: 400; }
.kyu-result__rank span {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.kyu-result__body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.kyu-result__section {
  font-family: var(--ff-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.kyu-result__label { font-size: 15px; font-weight: 500; }
.kyu-result__items { font-size: 12.5px; color: var(--ink-mute); }

.kyu-empty {
  padding: 40px 0;
  text-align: center;
  font-size: 14px;
  color: var(--ink-mute);
}

/* ─── Pager & foot ─── */
.kyu__pager {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}
.kyu__pager button {
  background: var(--paper-deep);
  border: 1px solid var(--paper-edge);
  border-radius: 2px;
  padding: 10px 16px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  cursor: pointer;
}
.kyu__pager button:hover:not(:disabled) { color: var(--ink); border-color: var(--ink-faint); }
.kyu__pager button:disabled { opacity: 0.35; cursor: default; }

.kyu__foot {
  border-top: 1px solid var(--paper-edge);
  padding-top: 14px;
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ─── Focus visibility ─── */
.kyu button:focus-visible,
.kyu input:focus-visible {
  outline: 2px solid var(--vermillion);
  outline-offset: 2px;
}

/* ─── Ink theme ─── */
body.theme-ink .kyu-chip.on { background: var(--vermillion); border-color: var(--vermillion); }
body.theme-ink .kyu-chip.on .kyu-chip__kanji,
body.theme-ink .kyu-chip.on .kyu-chip__label { color: #14110e; }
body.theme-ink .kyu__seg button.on { background: var(--vermillion); color: #14110e; }
body.theme-ink .kyu-item:nth-child(odd) { background: rgba(237, 230, 214, 0.05); }
body.theme-ink .kyu-qa__row.is-open .kyu-qa__num { color: #14110e; }

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .kyu { padding: 0 20px; }
  .kyu__head { grid-template-columns: 1fr; gap: 18px; }
  .kyu__belts { flex-direction: row; flex-wrap: wrap; }
  .kyu-panel__head { grid-template-columns: auto minmax(0, 1fr); }
  .kyu-panel__stats { grid-column: 1 / -1; justify-content: flex-start; }
  .kyu-panel__stats div { align-items: flex-start; }
}

@media (max-width: 640px) {
  .kyu { padding: 0 16px; margin-top: 18px; }
  .kyu__title { font-size: 26px; }
  .kyu__components { grid-template-columns: 1fr; }
  .kyu__toolbar { gap: 8px; }
  .kyu__search { flex: 1 1 100%; }
  .kyu__seg, .kyu__ctrl { flex: 1 1 auto; }
  .kyu__seg button, .kyu__ctrl { width: 100%; padding: 10px 8px; }
  .kyu__rail { position: static; margin-left: -16px; margin-right: -16px; padding: 10px 16px; }
  .kyu-panel__head, .kyu-section, .kyu-blocks, .kyu-notes { padding-left: 16px; padding-right: 16px; }
  .kyu-panel__kanji { font-size: 40px; }
  .kyu-panel__title { font-size: 22px; }
  .kyu-reminder {
    width: calc(100% - 32px);
    margin: 16px;
    grid-template-columns: auto minmax(0, 1fr);
  }
  .kyu-reminder__cta { grid-column: 1 / -1; }
  .kyu-groups { grid-template-columns: 1fr; }
  .kyu-result { grid-template-columns: 1fr; gap: 8px; }
  .kyu-qa__a { padding-left: 14px; }
  .kyu__pager button { flex: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .kyu-chip, .kyu-link svg, .kyu-qa__chev { transition: none; }
}

/* ─── Print: the whole syllabus on paper ─── */
@media print {
  body { background: #fff; }
  body::before { display: none; }
  .mast, .view-tabs, .mobile-view-nav, .foot,
  .kyu__toolbar, .kyu__rail, .kyu__pager, .kyu-link, .kyu-reminder__cta { display: none !important; }
  .kyu { max-width: none; padding: 0; margin: 0; }
  .kyu-panel {
    border: none;
    background: none;
    padding: 0;
    margin-bottom: 18px;
    break-inside: avoid;
    page-break-inside: avoid;
  }
  .kyu-panel__head { break-after: avoid; page-break-after: avoid; background: none; }
  .kyu-group, .kyu-block, .kyu-qa__row { break-inside: avoid; page-break-inside: avoid; }
  .kyu-groups { grid-template-columns: repeat(2, 1fr); }
  .kyu-qa__a[hidden] { display: block !important; }
  .kyu-qa__chev { display: none; }
}

/* Deep-link targets used by the kyu program's cross references. */
.section { scroll-margin-top: 24px; }
.bw-card { scroll-margin-top: 24px; }