.plans-page {
  background: var(--base);
  min-height: 100vh;
}

.plans-page .wrap {
  width: min(1480px, calc(100% - clamp(20px, 3vw, 48px)));
}

.plans-shell {
  display: grid;
  grid-template-columns: clamp(240px, 26vw, 360px) minmax(0, 1fr);
  gap: clamp(16px, 2.2vw, 32px);
  padding: clamp(16px, 2.5vw, 32px) 0 clamp(40px, 5vw, 64px);
  align-items: start;
}

.plans-side {
  position: sticky;
  top: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: calc(100vh - 32px);
  overflow: auto;
  overscroll-behavior: contain;
  padding-right: 4px;
  min-width: 0;
}

.plans-page .now-box {
  background: var(--rise);
  color: var(--ink);
  border: 1px solid var(--line);
  border-top: 3px solid var(--flare);
  padding: 14px 16px;
}

.now-kicker {
  margin: 0 0 6px;
  font-family: var(--display);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--flare);
}

.now-step {
  margin: 0 0 8px;
  font-family: var(--display);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 1.15;
}

.now-meta {
  margin: 0;
  color: var(--mute);
  font-size: 0.78rem;
  line-height: 1.4;
}

.side-title {
  margin: 0 0 10px;
  font-family: var(--display);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--beam);
}

.chain {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.chain-item {
  position: relative;
  margin: 0;
  border-left: 3px solid var(--line);
}

.chain-item.status-done { border-left-color: var(--beam); }
.chain-item.status-now { border-left-color: var(--flare); }

.chain-node {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  width: 100%;
  padding: 8px 10px;
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

button.chain-node:hover,
.chain-item.is-active .chain-node {
  background: rgba(91, 140, 255, 0.1);
}

.chain-i {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--mute);
}

.chain-label {
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.chain-note {
  font-size: 0.72rem;
  color: var(--mute);
}

.kind-tool .chain-label { font-weight: 600; color: var(--mute); }

.file-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.file-btn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  width: 100%;
  margin: 0 0 6px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: var(--surface);
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
}

.file-btn:hover,
.file-btn.is-active {
  border-color: var(--flare);
  background: rgba(255, 47, 159, 0.08);
}

.file-btn strong {
  font-family: var(--display);
  font-size: 0.9rem;
  text-transform: uppercase;
}

.file-name {
  font-size: 0.72rem;
  color: var(--beam);
}

.file-role {
  font-size: 0.72rem;
  color: var(--mute);
}

.plans-main {
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: clamp(16px, 2vw, 28px);
  min-height: 60vh;
}

.viewer-bar {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.viewer-title {
  margin: 0 0 4px;
  font-family: var(--display);
  font-size: 1.5rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.viewer-file {
  margin: 0;
  font-size: 0.78rem;
  color: var(--beam);
}

.md-body { overflow-wrap: anywhere; color: var(--ink); }

.md-body h1, .md-body h2, .md-body h3 {
  font-family: var(--display);
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.md-body h1 { font-size: 1.5rem; color: var(--flare); }
.md-body h2 { font-size: 1.2rem; margin-top: 1.4em; color: var(--beam); }
.md-body a { color: var(--flare); }

.md-body code {
  font-size: 0.88em;
  background: var(--rise);
  color: var(--beam);
  padding: 0.1em 0.35em;
}

.md-body pre {
  overflow: auto;
  padding: 12px 14px;
  background: #04040a;
  color: #e8e8f4;
  border: 1px solid var(--line);
}

.md-body pre code { background: transparent; color: inherit; padding: 0; }

.md-body blockquote {
  margin: 1em 0;
  padding: 0.2em 0 0.2em 1em;
  border-left: 3px solid var(--warn);
  color: var(--mute);
}

.table-scroll { overflow-x: auto; margin: 1em 0; }

.md-body table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.85rem;
}

.md-body th, .md-body td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  vertical-align: top;
}

.md-body th {
  background: var(--rise);
  text-align: left;
  color: var(--flare);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.72rem;
}

.md-loading, .md-error { color: var(--mute); }
.md-error { color: var(--flare); }

@media (max-width: 900px) {
  .plans-shell { grid-template-columns: 1fr; }
  .plans-side { position: static; max-height: none; }
}