.bd-page {
  --bd-bg: var(--pa-bg-soft);
  --bd-line: var(--pa-border);
  --bd-paper: var(--pa-text);
  --bd-muted: var(--pa-muted);
  --bd-mint: var(--pa-accent);
  --bd-gold: var(--pa-gold);
  --bd-red: var(--pa-negative);
  width: min(100%, 1400px);
  margin: 0 auto;
  padding-bottom: 88px;
  color: var(--bd-paper);
}

.bd-page *, .bd-page *::before, .bd-page *::after { box-sizing: border-box; }

.bd-breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 4px 18px;
  color: var(--pa-muted);
  font-family: var(--pa-font-mono, monospace);
  font-size: 12px;
  letter-spacing: .05em;
}

.bd-breadcrumb a { color: var(--pa-text-soft) !important; }
.bd-breadcrumb a:hover { color: var(--bd-mint) !important; }
.bd-breadcrumb strong { color: var(--bd-gold); font-weight: 650; }

.bd-hero {
  position: relative;
  min-height: 430px;
  border: 1px solid var(--pa-border-strong);
  border-radius: 12px;
  padding: clamp(50px, 7vw, 90px);
  overflow: hidden;
  background: var(--pa-surface);
  box-shadow: none;
}

.bd-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .22;
  background-image: none;
  background-size: 46px 46px;
  mask-image: linear-gradient(90deg, transparent, #000);
}

.bd-hero > * { position: relative; z-index: 1; }

.bd-kicker, .bd-section-head span, .bd-node small, .bd-after-entry > span,
.bd-journey-gate > div > span {
  font-family: var(--pa-font-mono, monospace);
  letter-spacing: .09em;
  text-transform: uppercase;
}

.bd-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--bd-mint);
  font-size: 12px;
  font-weight: 750;
}

.bd-kicker span { width: 25px; height: 1px; background: var(--bd-mint); }

.bd-hero h1 {
  max-width: 880px;
  margin: 22px 0 20px !important;
  color: var(--pa-text);
  font-family: var(--pa-font-title, "Noto Serif SC", serif);
  font-size: clamp(48px, 5.5vw, 76px);
  font-weight: 650;
  letter-spacing: -.045em;
  line-height: 1.08;
}

.bd-hero h1 em { color: var(--bd-gold); font-style: normal; }

.bd-hero > p {
  max-width: 760px;
  margin: 0;
  color: var(--pa-text-soft);
  font-size: 18px;
  line-height: 1.9;
}

.bd-hero > p strong { color: var(--pa-text); }

.bd-hero-rule {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-top: 32px;
}

.bd-hero-rule span { color: var(--bd-gold); font-size: 13px; }
.bd-hero-rule strong { color: var(--pa-text); font-size: 22px; }
.bd-hero-rule small { color: var(--pa-muted); font-size: 14px; }

.bd-tree-section { padding: 84px 0 0; }

.bd-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  padding: 0 clamp(8px, 3vw, 44px) 26px;
}

.bd-section-head span { color: var(--bd-mint); font-size: 12px; }

.bd-section-head h2, .bd-after-entry h2, .bd-journey-gate h2 {
  margin: 8px 0 0 !important;
  color: var(--pa-text);
  font-family: var(--pa-font-title, "Noto Serif SC", serif);
  font-size: clamp(32px, 3.5vw, 46px);
  font-weight: 650;
  letter-spacing: -.03em;
}

.bd-section-head p {
  max-width: 500px;
  margin: 0;
  color: var(--pa-muted);
  font-size: 15px;
  line-height: 1.8;
}

.bd-legend {
  display: flex;
  justify-content: center;
  gap: 26px;
  margin: 20px 0 12px;
  color: var(--pa-muted);
  font-size: 13px;
}

.bd-legend span { display: flex; align-items: center; gap: 8px; }
.bd-legend i { width: 8px; height: 8px; border-radius: 50%; }
.bd-legend .is-go i { background: var(--bd-mint); box-shadow: none; }
.bd-legend .is-wait i { background: var(--bd-red); box-shadow: none; }
.bd-legend .is-check i { background: var(--bd-gold); box-shadow: none; }

.bd-tree-scroll {
  overflow-x: auto;
  padding: 25px 12px 50px;
  scrollbar-color: #3a484b transparent;
}

.bd-tree {
  min-width: 1480px;
  width: max-content;
  margin: 0 auto;
  padding: 0 22px;
}

.bd-tree ul {
  position: relative;
  display: flex;
  width: 100%;
  justify-content: center;
  margin: 0;
  padding: 38px 0 0;
}

.bd-tree > ul { padding-top: 0; }

.bd-tree li {
  position: relative;
  display: flex;
  align-items: center;
  flex-direction: column;
  padding: 38px 8px 0;
  list-style: none;
  text-align: center;
}

.bd-tree > ul > li { padding-top: 0; }

.bd-tree > ul > li {
  width: 100%;
}

.bd-tree li::before,
.bd-tree li::after {
  content: "";
  position: absolute;
  top: 0;
  right: 50%;
  width: 50%;
  height: 38px;
  border-top: 2px solid var(--bd-line);
}

.bd-tree li::after {
  right: auto;
  left: 50%;
  border-left: 2px solid var(--bd-line);
}

.bd-tree li:only-child::before,
.bd-tree li:only-child::after { display: none; }

.bd-tree li:only-child { padding-top: 0; }
.bd-tree li:first-child::before,
.bd-tree li:last-child::after { border: 0; }
.bd-tree li:last-child::before { border-right: 2px solid var(--bd-line); border-radius: 0 9px 0 0; }
.bd-tree li:first-child::after { border-radius: 9px 0 0 0; }

.bd-tree ul ul::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  height: 38px;
  border-left: 2px solid var(--bd-line);
}

.bd-tree > ul > li > ul > li,
.bd-trend-branch > ul > li,
.bd-trend-branch > ul > li:first-child > ul > li,
.bd-range-branch > ul > li {
  width: 50%;
  flex: 0 0 50%;
}

.bd-node {
  position: relative;
  z-index: 2;
  width: 210px;
  min-height: 108px;
  padding: 18px 16px;
  border-radius: 18px;
  background: var(--pa-surface);
  box-shadow: none;
  transition:
    transform .24s cubic-bezier(.2,.8,.2,1),
    box-shadow .24s ease,
    background-color .24s ease;
}

.bd-node:hover {
  z-index: 10;
  background: var(--pa-surface);
  box-shadow: none;
  transform: translateY(-7px) scale(1.012);
}

.bd-node::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 50%;
  width: 10px;
  height: 10px;
  border: 2px solid var(--bd-line);
  border-radius: 50%;
  background: var(--pa-surface);
  transform: translateX(-50%);
  transition: border-color .2s ease, box-shadow .2s ease;
}

.bd-node:hover::before {
  border-color: var(--bd-mint);
  box-shadow: none;
}

.bd-node-root {
  width: 320px;
  min-height: 150px;
  padding: 27px 25px;
  border: 1px solid var(--pa-border);
  border-radius: 24px;
  background: var(--pa-surface);
  box-shadow: none;
}

.bd-node-root::before { display: none; }
.bd-node-context {
  width: 270px;
  min-height: 150px;
  padding: 25px 22px;
  border-radius: 22px;
}
.bd-node-context.is-trend {
  border: 1px solid var(--pa-border);
  background: var(--pa-surface);
}
.bd-node-context.is-range {
  border: 1px solid var(--pa-border);
  background: var(--pa-surface);
}
.bd-node-question { background: var(--pa-surface); }

.bd-code {
  display: inline-grid;
  min-width: 34px;
  height: 28px;
  place-items: center;
  border-radius: 999px;
  padding: 0 9px;
  color: var(--bd-mint);
  background: var(--pa-primary-soft);
  font-family: var(--pa-font-mono, monospace);
  font-size: 12px;
  font-weight: 800;
}

.bd-range-branch .bd-code { color: var(--bd-gold); background: var(--pa-gold-soft); }

.bd-node small {
  display: block;
  margin-top: 10px;
  color: var(--pa-muted);
  font-size: 12px;
}

.bd-node strong {
  display: block;
  margin-top: 7px;
  color: var(--pa-text);
  font-size: 18px;
  line-height: 1.45;
}

.bd-node p {
  margin: 7px 0 0;
  color: var(--pa-muted);
  font-size: 14px;
  line-height: 1.55;
}

.bd-node-context strong { font-family: var(--pa-font-title, serif); font-size: 28px; }
.bd-node-root strong { font-size: 20px; }

.bd-node-result {
  width: 225px;
  min-height: 130px;
  padding-top: 22px;
}

.bd-node-result.is-go { background: var(--pa-surface); }
.bd-node-result.is-wait { background: var(--pa-surface); }
.bd-node-result.is-check { background: var(--pa-surface); }

.bd-result-icon {
  display: grid;
  width: 27px;
  height: 27px;
  margin: 0 auto;
  place-items: center;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 800;
}

.bd-node-result.is-go .bd-result-icon { color: var(--bd-mint); background: var(--pa-primary-soft); }
.bd-node-result.is-wait .bd-result-icon { color: var(--bd-red); background: var(--pa-negative-soft); }
.bd-node-result.is-check .bd-result-icon { color: var(--bd-gold); background: var(--pa-gold-soft); }
.bd-node-result.is-go small { color: var(--bd-mint); }
.bd-node-result.is-wait small { color: var(--bd-red); }
.bd-node-result.is-check small { color: var(--bd-gold); }

.bd-range-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  max-width: 800px;
  margin: 2px auto 0;
  color: var(--pa-muted);
  font-size: 15px;
  line-height: 1.7;
  text-align: center;
}

.bd-range-note > span {
  display: grid;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  color: var(--bd-gold);
  background: var(--pa-gold-soft);
  font-family: var(--pa-font-mono, monospace);
}

.bd-range-note strong { color: var(--pa-text); }

.bd-after-entry {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  align-items: end;
  gap: 38px;
  margin: 90px clamp(8px, 3vw, 44px) 0;
  border-top: 1px solid var(--pa-border-strong);
  border-bottom: 1px solid var(--pa-border-strong);
  padding: 38px 4px;
}

.bd-after-entry > span { color: var(--bd-mint); font-size: 12px; }
.bd-after-entry h2 { grid-column: 1; font-size: 30px; }
.bd-after-entry p { margin: 0; color: var(--pa-muted); font-size: 15px; line-height: 1.7; }
.bd-after-entry p strong { color: var(--pa-text); }

.bd-bottom-rule {
  margin: 27px 15px 0;
  color: var(--bd-gold);
  font-size: 16px;
  font-weight: 650;
  text-align: center;
}

.bd-journey-gate {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 40px;
  margin: 76px clamp(8px, 3vw, 44px) 0;
  border-radius: 14px;
  padding: clamp(34px, 4vw, 52px);
  overflow: hidden;
  background: var(--pa-surface);
  box-shadow: none;
}

.bd-journey-gate::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 2px;
  background: var(--pa-surface);
}

.bd-journey-gate > div > span { color: var(--bd-mint); font-size: 12px; }
.bd-journey-gate p { margin: 11px 0 0; color: var(--pa-muted); font-size: 15px; }

.bd-journey-gate a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 32px;
  border: 1px solid var(--pa-border-strong);
  border-radius: 7px;
  padding: 19px 21px;
  color: var(--pa-text) !important;
  background: var(--bd-mint);
  font-size: 16px;
  font-weight: 800;
  box-shadow: none;
  transition: transform .22s ease, box-shadow .22s ease;
}

.bd-journey-gate a:hover {
  color: var(--pa-text) !important;
  box-shadow: none;
  transform: translateY(-5px);
}

.bd-journey-gate a span {
  display: grid;
  width: 29px;
  height: 29px;
  place-items: center;
  border-radius: 50%;
  color: var(--bd-mint);
  background: var(--pa-surface);
}

@media (max-width: 760px) {
  .bd-page { padding-bottom: 54px; }
  .bd-breadcrumb { padding-inline: 16px; font-size: 11px; }
  .bd-hero { border-right: 0; border-left: 0; border-radius: 0; padding: 45px 21px; }
  .bd-hero h1 { font-size: clamp(42px, 12vw, 56px); }
  .bd-hero > p { font-size: 17px; }
  .bd-hero-rule { align-items: flex-start; flex-direction: column; gap: 6px; }
  .bd-tree-section { padding-top: 60px; }
  .bd-section-head { display: block; padding-inline: 17px; }
  .bd-section-head p { margin-top: 12px; font-size: 14px; }
  .bd-legend { flex-wrap: wrap; gap: 12px 18px; padding-inline: 12px; }
  .bd-tree-scroll { overflow: visible; padding: 22px 17px 40px; }
  .bd-tree { min-width: 0; width: 100%; padding: 0; }
  .bd-tree ul, .bd-tree li { display: block; padding: 0; }
  .bd-tree ul ul { margin-left: 21px; padding: 18px 0 0 20px; border-left: 2px solid var(--bd-line); }
  .bd-tree ul ul::before, .bd-tree li::before, .bd-tree li::after { display: none; }
  .bd-tree li + li { margin-top: 18px; }
  .bd-tree ul ul > li::before {
    content: "";
    position: absolute;
    top: 52px;
    left: -20px;
    display: block;
    width: 20px;
    height: 2px;
    border: 0;
    background: var(--bd-line);
  }
  .bd-node, .bd-node-root, .bd-node-context, .bd-node-result {
    width: 100%;
    min-height: 0;
    border-radius: 15px;
    padding: 20px;
    text-align: left;
  }
  .bd-node::before { top: 50%; left: -5px; transform: translate(-50%, -50%); }
  .bd-node-root::before { display: none; }
  .bd-result-icon { margin: 0; }
  .bd-node small { font-size: 11px; }
  .bd-node strong { font-size: 17px; }
  .bd-node p { font-size: 14px; }
  .bd-node-context strong { font-size: 27px; }
  .bd-range-note { align-items: flex-start; margin: 12px 20px 0; text-align: left; }
  .bd-after-entry { display: block; margin: 66px 17px 0; }
  .bd-after-entry h2 { margin-bottom: 24px !important; }
  .bd-after-entry p + p { margin-top: 12px; }
  .bd-bottom-rule { font-size: 15px; line-height: 1.8; }
  .bd-journey-gate { grid-template-columns: 1fr; margin: 58px 16px 0; padding: 29px 22px; }
  .bd-journey-gate a { justify-content: space-between; font-size: 15px; }
}

@media (prefers-reduced-motion: reduce) {
  .bd-page *, .bd-page *::before, .bd-page *::after {
    scroll-behavior: auto !important;
    transition-duration: .001ms !important;
  }
}