/* A quiet reference book: one ink, clear rules, room for the requirements. */
.badge-page.badge-page {
  --ink:#263835;--muted:#64716c;--accent:#315b4e;--line:#d7ddd5;
  --paper:#fafbf8;--bt-soft:#eef2eb;--bt-warm:#f4f0e5;
  --bt-jump:#315b4e;--bt-spin:#315b4e;--bt-step:#315b4e;
  --bt-skate:#64716c;--bt-choreo:#796041;--bt-high:#315b4e;
  --bt-scroll-offset:24px;
  max-width:1140px;min-width:0;margin:0 auto;color:var(--ink);
  font-family:"Noto Sans JP","Yu Gothic",Meiryo,system-ui,sans-serif;
  font-size:15px;line-height:1.8;overflow-wrap:anywhere;
}
.badge-standalone {background:#fafbf8}
.badge-standalone main.badge-page {padding:36px 48px 64px}
.site-layout main:has(>.badge-page) {max-width:1240px}
.badge-page :is(h1,h2,h3,h4) {color:var(--ink);line-height:1.5}
.badge-page a {color:var(--accent);text-underline-offset:4px}
.badge-page button {font:inherit;cursor:pointer}
.badge-page :is(a,button,summary):focus-visible {outline:2px solid var(--accent);outline-offset:4px}
.badge-page>.back {margin-bottom:18px}
.bt-masthead {display:flex;justify-content:space-between;gap:16px;padding:0 0 15px;border-bottom:1px solid var(--ink);font:600 11px/1.5 ui-sans-serif,system-ui,sans-serif;letter-spacing:.14em}
.badge-page .bt-hero {display:grid;grid-template-columns:1.08fr 1fr;column-gap:40px;position:relative;margin:0;padding:32px 0;max-width:none}
.badge-page .bt-hero .eyebrow {grid-column:1;grid-row:1;margin:0 0 10px;color:var(--muted);font-size:12px;font-weight:500;letter-spacing:.16em}
.badge-page .bt-hero h1 {grid-column:1;grid-row:2/4;align-self:start;font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:40px;font-weight:600;letter-spacing:.04em;line-height:1.5}
.badge-page .bt-hero .lead {grid-column:2;grid-row:1/3;margin:0;color:var(--muted);font-size:13px;line-height:1.9}
.bt-jump {grid-column:2;grid-row:3;margin:12px 0 0;font-size:12px}
.bt-contents {display:flex;flex-wrap:wrap;gap:4px 30px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:6px 0}
.bt-contents a {display:inline-flex;align-items:center;min-height:40px;font-size:13px;font-weight:600}
.bt-contents a::before {content:"↗";margin-right:9px;font-weight:400;color:var(--muted)}
.bt-intro-notes {display:grid;grid-template-columns:1fr 1fr;gap:0 32px;margin:0 0 30px;border-bottom:1px solid var(--line)}
.bt-intro-notes details {min-width:0;margin:0;background:transparent;border:0;border-radius:0}
.bt-intro-notes summary {position:relative;display:flex;align-items:baseline;gap:8px;list-style:none;padding:16px 25px 16px 0;cursor:pointer;font-size:13px;font-weight:600}
.bt-intro-notes summary::-webkit-details-marker {display:none}
.bt-intro-notes summary::after {content:"＋";position:absolute;right:0;top:15px;color:var(--muted);font-size:15px;font-weight:400}
.bt-intro-notes details[open]>summary::after {content:"−"}
.bt-intro-notes summary span {font-size:11px;font-weight:400;color:var(--muted)}
.bt-timeline {list-style:none;padding:0 0 18px;margin:0}
.bt-timeline li {display:grid;grid-template-columns:46px 1fr;gap:12px;padding:12px 0;border-top:1px solid var(--line)}
.bt-timeline b {font-size:14px;font-variant-numeric:tabular-nums;font-weight:500}
.bt-timeline strong,.bt-flow strong {display:block;font-size:12px;font-weight:600}
.bt-timeline span,.bt-flow li span {display:block;font-size:12px;color:var(--muted);line-height:1.8;margin-top:3px}
.bt-flow ol {list-style:none;margin:0;padding:0 0 18px}
.bt-flow li {display:grid;grid-template-columns:18px 1fr;gap:12px;padding:12px 0;border-top:1px solid var(--line)}
.bt-flow li b {color:var(--accent);font:500 14px/1.8 Georgia,serif}
.bt-workspace {display:grid;grid-template-columns:170px minmax(0,1fr);gap:46px;align-items:start;scroll-margin-top:var(--bt-scroll-offset)}
.bt-controls {position:sticky;top:24px;align-self:start;padding-bottom:12px;min-width:0}
.site-layout .badge-page {--bt-scroll-offset:90px}
.site-layout .bt-controls {top:90px}
.bt-control-label {margin:0 0 12px;color:var(--muted);font-size:11px;letter-spacing:.1em;font-weight:600}
.bt-ladder {position:relative;display:grid;gap:0}
.bt-step {position:relative;display:grid;grid-template-columns:1fr auto;align-items:center;gap:0 8px;padding:11px 12px;border-left:2px solid transparent;border-bottom:1px solid var(--line);color:var(--ink)!important;font-size:15px;line-height:1.6;transition:background-color .15s}
.bt-step b {display:none}
.bt-step span {font-weight:500}
.bt-step small {font-size:10px;color:var(--muted);font-weight:400;white-space:nowrap}
.bt-step:hover {background:var(--bt-soft);text-decoration:none}
.bt-step[aria-current="true"] {border-left-color:var(--accent);background:var(--bt-soft)}
.bt-step[aria-current="true"] span {color:var(--accent);font-weight:700}
.bt-filter {margin-top:24px}
.bt-filter .bt-control-label {margin-bottom:9px}
.bt-gender {display:flex;gap:0;padding:3px;border:1px solid var(--line);border-radius:4px}
.bt-gender button {flex:1;min-height:36px;padding:3px 7px;border:0;border-radius:2px;background:transparent;color:var(--muted);font-size:11px;white-space:nowrap}
.bt-gender button:hover {background:var(--bt-soft);color:var(--ink)}
.bt-gender button[aria-pressed="true"] {background:var(--ink);color:#fff;font-weight:600}
.bt-panels {min-width:0}
.bt-panels[data-gender="f"] [data-g="m"],.bt-panels[data-gender="m"] [data-g="f"] {display:none}
.bt-panels.is-tabbed .bt-panel {display:none}
.bt-panels.is-tabbed .bt-panel.is-active {display:block}
.bt-panel {scroll-margin-top:var(--bt-scroll-offset);margin:0 0 36px}
.bt-panel-head {display:flex;align-items:center;gap:25px;min-height:110px;padding:0 0 23px;margin:0 0 22px;border-bottom:1px solid var(--ink)}
.bt-medal {flex:none;min-width:57px;color:var(--accent);font-family:"Yu Mincho",Georgia,serif;font-size:68px;line-height:1;font-weight:400;text-align:center}
.bt-medal span {font-size:inherit}
.bt-eyebrow {margin:0 0 4px;color:var(--muted);font:500 10px/1.5 ui-sans-serif,system-ui,sans-serif;letter-spacing:.16em}
.bt-panel-head h2 {font-size:25px;font-weight:600;margin:0 0 5px}
.bt-sum {margin:0;color:var(--muted);font-size:13px;line-height:1.7}
.bt-chips {display:flex;flex-wrap:wrap;gap:5px 0;margin-top:10px}
.bt-chip {font-size:11px;line-height:1.2;color:var(--accent)}
.bt-chip+.bt-chip {border-left:1px solid var(--line);padding-left:10px;margin-left:10px}
.bt-level-notes:empty {display:none}
.bt-level-notes {margin-bottom:28px}
.bt-pass {padding:0 0 20px;margin:0 0 8px;border-bottom:1px solid var(--line)}
.bt-pass>p {font-size:11px;color:var(--muted);margin:0 0 12px;letter-spacing:.08em}
.bt-pass-tiles {display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:18px 20px}
.bt-pass-tiles>div {display:grid;grid-template-columns:auto 1fr;align-items:baseline;gap:0 6px;border-left:1px solid var(--line);padding-left:15px}
.bt-pass-tiles span {grid-column:1/-1;color:var(--muted);font-size:11px}
.bt-pass-tiles strong {font:500 30px/1.4 Georgia,serif;font-variant-numeric:tabular-nums;color:var(--ink)}
.bt-pass-tiles small {font-size:11px;color:var(--muted)}
.bt-callout {margin:0;padding:12px 0;border-bottom:1px solid var(--line);font-size:13px;line-height:1.8}
.bt-callout strong {font-weight:600}
.bt-callout.c-goe {display:flex;flex-wrap:wrap;align-items:center;gap:6px 16px}
.bt-callout.c-carry {margin:12px 0;background:var(--bt-warm);padding:14px 18px;border:0;border-left:2px solid #a08a59}
.bt-callout summary {position:relative;cursor:pointer;padding-right:26px;list-style:none}
.bt-callout summary::-webkit-details-marker {display:none}
.bt-callout summary::after {content:"＋";position:absolute;right:2px;top:0;color:var(--muted)}
.bt-callout[open]>summary::after {content:"−"}
.bt-callout .bt-plain {margin-top:10px}
.bt-ref {font-size:11px;color:var(--muted);margin-left:10px;font-weight:400}
.bt-pips {display:inline-flex;gap:3px}
.bt-pips i {width:12px;height:4px;background:var(--line)}
.bt-pips i.on {background:var(--accent)}
.bt-blocks {display:grid;gap:30px}
.bt-block {min-width:0}
.bt-block header {display:grid;grid-template-columns:1fr auto;gap:4px 12px;padding:0 0 15px;border-bottom:1px solid var(--line)}
.bt-block header>p {grid-column:1/-1;margin:0;color:var(--muted);font:500 10px/1.5 ui-sans-serif,system-ui,sans-serif;letter-spacing:.12em}
.bt-block h3 {font-size:17px;font-weight:600;margin:0}
.bt-meta {display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:4px 12px}
.bt-meta span {font-size:11px;color:var(--muted)}
.bt-list {list-style:none;margin:0;padding:0}
.bt-list>li {display:flex;gap:16px;padding:21px 0;border-bottom:1px solid var(--line)}
.bt-list>li:last-child {border-bottom:0}
.bt-num {flex:none;width:20px;padding-top:3px;color:var(--muted);font:400 15px/1.5 Georgia,serif;text-align:left}
.bt-item {flex:1;min-width:0}
.bt-item>p {margin:3px 0 0;font-size:15px;line-height:1.85;font-weight:500}
.bt-item>small {position:relative;display:block;padding-left:12px;margin:5px 0 0;color:var(--muted);font-size:12px;line-height:1.8}
.bt-item>small::before {content:"–";position:absolute;left:0}
.bt-music {display:inline-flex;align-items:center;flex-wrap:wrap;gap:5px 10px;justify-self:start;min-height:36px;width:fit-content;margin-top:7px;border-bottom:1px solid var(--line);font-size:12px;font-weight:500}
.bt-music span {color:var(--muted);font-size:10px;font-weight:400}
.bt-tags {display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.bt-kind,.bt-g,.bt-new {font-size:10px;font-weight:500;line-height:1.7}
.bt-kind {color:var(--muted);letter-spacing:.05em}
.bt-g {padding:0 5px;border:1px solid #abb9b2;border-radius:2px;color:var(--ink)}
.bt-new {padding:1px 5px;background:var(--bt-warm);color:#796041}
.bt-group {margin:18px 0 0}
.bt-group+.bt-group {padding-top:18px;border-top:1px solid var(--line)}
.bt-group h4 {margin:0;padding:0 0 7px;font-size:12px;font-weight:600;color:var(--accent)}
.bt-group .bt-list>li {padding:14px 0}
.bt-group .bt-tags .bt-kind,.b-st .bt-kind {display:none}
.bt-group .bt-tags:not(:has(span:not(.bt-kind))),.b-st .bt-tags:not(:has(span:not(.bt-kind))) {display:none}
.bt-lead {padding:14px 16px;background:var(--bt-soft);margin:16px 0 0;color:var(--muted);font-size:12px;line-height:1.8}
.bt-sp {font-size:15px;line-height:1.8;margin:20px 0}
.bt-foot {margin:12px 0 0;padding:14px 18px 14px 30px;background:var(--bt-warm);font-size:12px;line-height:1.8;color:#695a3d}
.bt-foot li+li {margin-top:5px}
.bt-checks {margin-top:8px}
.bt-checks summary {display:flex;align-items:center;gap:7px;width:fit-content;min-height:34px;padding:3px 0;list-style:none;cursor:pointer;color:var(--accent);font-size:12px;font-weight:500}
.bt-checks summary::-webkit-details-marker {display:none}
.bt-checks summary::before {content:"＋";font-size:13px}
.bt-checks[open]>summary::before {content:"−"}
.bt-checks[open] {padding-bottom:3px}
.bt-checks .bt-marks {padding:8px 12px;border-left:2px solid var(--line);margin-top:3px}
.bt-marks {list-style:none;margin:0;padding:0;display:grid;gap:10px}
.bt-marks li {display:flex;gap:9px;align-items:flex-start;font-size:12px;line-height:1.85}
.bt-marks i {flex:none;width:18px;font-style:normal;font-weight:600;line-height:1.85;text-align:center;color:var(--accent)}
.bt-marks .m-ng i {color:#985345}
.bt-marks .m-nt i {color:var(--muted);font-size:10px;line-height:2.3}
.bt-fig {position:relative;display:block;width:100%;max-width:330px;min-height:0;margin:13px 0 4px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:2px;cursor:zoom-in!important;color:var(--ink)}
.bt-fig:hover {background:#fff;border-color:var(--accent)}
.bt-fig img {display:block;width:100%;height:auto;max-height:190px;object-fit:contain}
.badge-page .bt-fig span {display:block;margin:7px 0 0;font-size:10px;font-weight:400;color:var(--muted);text-align:right}
.bt-fig span::after {content:" ↗"}
.bt-section {margin-top:56px;padding-top:28px;border-top:1px solid var(--ink);scroll-margin-top:var(--bt-scroll-offset)}
.bt-section>h2 {font-family:"Yu Mincho","Hiragino Mincho ProN",serif;font-size:26px;font-weight:600;margin:0 0 20px;letter-spacing:.04em}
.bt-section-lead {font-size:13px;line-height:1.9;color:var(--muted);margin:-10px 0 26px;max-width:720px}
.bt-guide {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.bt-guide-card {min-width:0;padding:0 0 20px}
.bt-guide-card+.bt-guide-card {border-left:1px solid var(--line);padding-left:26px}
.bt-guide-card header {margin:0 0 19px;padding-bottom:12px;border-bottom:1px solid var(--line)}
.bt-guide-card h3 {font-size:16px;margin:0}
.bt-guide-card header p {font-size:11px;color:var(--muted);margin:5px 0 0}
.bt-guide-sub {display:grid;grid-template-columns:240px minmax(0,1fr);gap:36px;margin-top:24px;border-top:1px solid var(--line);padding-top:25px}
.bt-guide-sub>section {min-width:0}
.bt-guide-sub h3 {font-size:15px;margin:0 0 6px}
.bt-guide-sub .bt-ref {display:block;margin:0 0 16px}
.bt-pos {display:grid;gap:16px}
.bt-pos strong {display:block;font-size:12px;color:var(--accent)}
.bt-pos span {display:block;font-size:12px;line-height:1.85;color:var(--muted);margin-top:4px}
.bt-table {overflow:auto;max-width:100%;border-top:1px solid var(--line);border-bottom:1px solid var(--line);scrollbar-width:thin}
.bt-table table {width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
.bt-table th,.bt-table td {padding:15px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:12px;line-height:1.75;white-space:normal}
.bt-table thead th {background:var(--bt-soft);color:var(--muted);font-size:11px;font-weight:500;white-space:nowrap}
.bt-table tbody th {font-weight:600;white-space:nowrap}
.bt-table tbody th a {display:inline-flex;align-items:center;min-height:28px}
.bt-table tbody tr:last-child>* {border-bottom:0}
.bt-table tbody tr:hover {background:var(--bt-soft)}
.bt-table td:nth-child(n+3) {white-space:nowrap}
.bt-turns th,.bt-turns td {font-size:11px;padding:12px 9px}
.bt-turns td:nth-child(n+3) {white-space:normal}
.bt-turns td.e,.bt-turns td:nth-child(2) {white-space:nowrap}
.bt-rules {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px 48px}
.bt-rules section {padding-top:16px;border-top:1px solid var(--line)}
.bt-rules h3 {font-size:15px;margin:0 0 15px}
.bt-plain {margin:0;padding-left:18px;font-size:13px;line-height:1.9}
.bt-plain li+li {margin-top:5px}
.bt-plain li::marker {color:#8e9f92}
.bt-source {margin:48px 0 0;padding-top:20px;border-top:1px solid var(--line);font-size:11px;line-height:2;color:var(--muted)}
.bt-unofficial {font-size:11px;line-height:1.9;color:var(--muted);margin:18px 0 0}
.bt-dialog {max-width:min(960px,94vw);max-height:92vh;padding:48px 24px 18px;border:1px solid var(--line);border-radius:4px;background:#fff;color:var(--ink)}
.bt-dialog::backdrop {background:#172923bb}
.bt-dialog img {display:block;max-width:100%;height:auto;margin:0 auto}
.bt-dialog p {font-size:12px;line-height:1.7;margin:18px 0 0;text-align:center;color:var(--muted)}
.bt-dialog form {position:sticky;top:0;display:flex;justify-content:flex-end;height:0}
.bt-dialog .bt-close {position:relative;top:-39px;min-height:36px;width:36px;padding:0;border:1px solid var(--line);border-radius:2px;background:#fff;color:var(--ink);font-size:22px;line-height:1}
@media(min-width:1000px) {
  .bt-item:has(>.bt-fig) {display:grid;grid-template-columns:minmax(0,1fr) 190px;column-gap:20px;align-content:start}
  .bt-item:has(>.bt-fig)>:not(.bt-fig) {grid-column:1}
  .bt-item:has(>.bt-fig)>.bt-fig {grid-column:2;grid-row:1/6;align-self:start;margin:0}
}
@media(max-width:1000px) {
  .badge-page .bt-hero h1 {font-size:34px}
  .bt-workspace {grid-template-columns:145px minmax(0,1fr);gap:28px}
  .bt-step {padding:10px 8px}
  .bt-step small {font-size:9px}
  .bt-block header {grid-template-columns:1fr}
  .bt-meta {justify-content:flex-start}
  .bt-guide {gap:24px}
  .bt-guide-card+.bt-guide-card {padding-left:20px}
  .bt-guide-sub {grid-template-columns:200px minmax(0,1fr);gap:24px}
}
@media(max-width:760px) {
  .badge-standalone main.badge-page {padding:24px 22px 42px}
  .badge-page .bt-hero {display:block;padding:27px 0 23px}
  .badge-page .bt-hero .lead {margin-top:14px}
  .badge-page .bt-hero h1 {font-size:34px}
  .bt-contents {gap:0 22px}
  .bt-contents a {font-size:12px}
  .bt-intro-notes {gap:0;margin-bottom:24px;grid-template-columns:1fr}
  .bt-intro-notes details+details {border-top:1px solid var(--line)}
  .bt-workspace {display:block}
  .bt-controls,.site-layout .bt-controls {top:0;z-index:6;background:var(--paper);padding:10px 0 12px;border-top:1px solid var(--ink);border-bottom:1px solid var(--line);margin-bottom:25px}
  .site-layout .bt-controls {top:var(--site-header-height,64px)}
  .bt-controls>.bt-control-label {font-size:10px;margin:0 0 7px}
  .bt-ladder {display:grid;grid-template-columns:repeat(9,minmax(48px,1fr));overflow-x:auto;scrollbar-width:thin;scrollbar-color:#adb9ad transparent;padding-bottom:4px}
  .bt-step {display:block;min-height:44px;padding:9px 3px;text-align:center;border-left:0;border-bottom:2px solid transparent;font-size:14px}
  .bt-step[aria-current="true"] {border-bottom-color:var(--accent)}
  .bt-step small {display:none}
  .bt-filter {display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:8px}
  .bt-filter .bt-control-label {margin:0;font-size:10px}
  .bt-gender {padding:2px;min-width:170px}
  .bt-gender button {min-height:32px}
  .bt-panel-head {padding-bottom:20px;min-height:110px;gap:23px}
  .bt-medal {font-size:58px;min-width:50px}
  .bt-panel-head h2 {font-size:23px}
  .bt-block header {grid-template-columns:1fr auto}
  .bt-meta {justify-content:flex-end}
  .bt-section {margin-top:40px;padding-top:24px;scroll-margin-top:90px}
  .bt-section>h2 {font-size:24px}
  .bt-guide {display:block}
  .bt-guide-card {padding:0 0 26px}
  .bt-guide-card+.bt-guide-card {border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:20px}
  .bt-guide-card header {border:0;margin-bottom:16px;padding-bottom:0}
  .bt-guide-sub {grid-template-columns:1fr;gap:28px;margin-top:0}
  .bt-pos {grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
  .bt-table table {min-width:640px}
  .bt-rules {grid-template-columns:1fr;gap:25px}
  .bt-source {margin-top:36px}
}
@media(max-width:480px) {
  .badge-standalone main.badge-page {padding:20px 18px 36px}
  .bt-masthead {font-size:9px;letter-spacing:.08em;gap:8px;padding-bottom:13px}
  .badge-page .bt-hero h1 {font-size:29px;letter-spacing:.02em}
  .badge-page .bt-hero .lead {font-size:13px;line-height:1.9;margin-top:12px}
  .bt-jump {font-size:12px;line-height:1.8}
  .bt-contents {display:grid;grid-template-columns:1fr 1fr;gap:0 10px}
  .bt-contents a {min-height:38px;font-size:11px}
  .bt-intro-notes summary {font-size:12px;gap:8px}
  .bt-intro-notes summary span {font-size:10px}
  .bt-panel-head {gap:18px}
  .bt-sum {font-size:12px}
  .bt-block header {grid-template-columns:1fr;gap:6px}
  .bt-block h3 {font-size:16px}
  .bt-meta {justify-content:flex-start}
  .bt-list>li {gap:12px;padding:18px 0}
  .bt-item>p {font-size:14px}
  .bt-item>small {font-size:12px}
  .bt-fig {max-width:100%;padding:10px}
  .bt-fig img {max-height:200px}
  .bt-pass-tiles {grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}
  .bt-pass-tiles>div {padding-left:10px}
  .bt-ref {display:block;margin-left:0;margin-top:3px}
  .bt-pos {grid-template-columns:1fr;gap:16px}
  .bt-dialog {padding:46px 14px 16px}
}
@media(prefers-reduced-motion:reduce) {
  .badge-page * {scroll-behavior:auto!important;transition:none!important}
}