:root {
  --bg: #f3f0ea;
  --paper: #fffcf7;
  --ink: #1c2430;
  --muted: #5c6774;
  --line: #d9d2c6;
  --sidebar: #161d27;
  --sidebar-text: #c9d0d8;
  --accent: #1f4e79;
  --ok: #0f766e;
  --bad: #b42318;
  --warn: #b45309;
  --shadow: 0 1px 0 rgba(28, 36, 48, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: 280px;
  background: var(--sidebar);
  color: #fff;
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  z-index: 20;
  overflow-y: auto;
}

.brand-kicker {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #8b97a6;
}

.brand h1 {
  margin: 8px 0 6px;
  font-size: 22px;
  font-weight: 650;
  letter-spacing: 0.01em;
}

.brand p {
  margin: 0;
  color: var(--sidebar-text);
  font-size: 13px;
}

.page-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.page-tab {
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: transparent;
  color: var(--sidebar-text);
  padding: 8px 4px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.page-tab.is-active {
  background: #fff;
  color: var(--sidebar);
  border-color: #fff;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.site-search {
  position: relative;
}

.site-search input {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font: inherit;
  font-size: 13px;
  padding: 8px 32px 8px 10px;
}

.site-search input::placeholder {
  color: #8b97a6;
}

.site-search input:focus {
  outline: 1px solid #d7a15a;
  border-color: #d7a15a;
}

.search-kbd {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 1px 6px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #8b97a6;
  font-size: 11px;
  line-height: 1.4;
}

.site-search.is-open .search-kbd,
.site-search.has-query .search-kbd,
.site-search input:focus + .search-kbd {
  display: none;
}

.search-results {
  margin-top: 6px;
  max-height: 280px;
  overflow-y: auto;
  background: #11171f;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.search-empty {
  margin: 0;
  padding: 12px;
  font-size: 12px;
  color: #8b97a6;
}

.search-item {
  display: block;
  width: 100%;
  text-align: left;
  border: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: transparent;
  color: inherit;
  font: inherit;
  padding: 10px 12px;
  cursor: pointer;
}

.search-item:last-child {
  border-bottom: 0;
}

.search-item:hover,
.search-item.is-active {
  background: rgba(255, 255, 255, 0.06);
}

.search-kind {
  display: inline-block;
  margin-bottom: 4px;
  font-size: 11px;
  color: #d7a15a;
}

.search-item strong {
  display: block;
  font-size: 13px;
  color: #fff;
  font-weight: 650;
}

.search-item p {
  margin: 4px 0 0;
  font-size: 12px;
  color: #8b97a6;
  line-height: 1.45;
}

.search-item mark,
.search-empty mark {
  background: #d7a15a;
  color: #161d27;
}

.search-hit {
  outline: 2px solid #d7a15a;
  outline-offset: 2px;
}

.toc {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.toc-label {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: #8b97a6;
  padding: 12px 10px 4px;
}

.toc[hidden] {
  display: none;
}

.page {
  display: none;
}

.page.is-visible {
  display: block;
}

.toc-item {
  color: var(--sidebar-text);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 14px;
  border-left: 2px solid transparent;
}

.toc-item:hover,
.toc-item.is-active {
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
}

.toc-item.is-active {
  border-left-color: #d7a15a;
}

.sidebar-foot {
  margin-top: 8px;
  font-size: 12px;
  color: #8b97a6;
  line-height: 1.6;
}

.stats {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.stats-live {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--sidebar-text);
}

.stats-live strong {
  font-size: 22px;
  color: #fff;
  font-weight: 650;
}

.stats-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3dd68c;
}

.stats.is-offline .stats-dot {
  background: #8b97a6;
  box-shadow: none;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 10px;
  margin: 0 0 12px;
}

.stats-grid div {
  margin: 0;
}

.stats-grid dt {
  font-size: 11px;
  color: #8b97a6;
}

.stats-grid dd {
  margin: 2px 0 0;
  font-size: 16px;
  color: #fff;
  font-weight: 650;
}

.stats-bar {
  display: grid;
  grid-template-columns: 32px 1fr 28px;
  gap: 8px;
  align-items: center;
  font-size: 11px;
  color: #8b97a6;
  margin-bottom: 6px;
}

.stats-bar i {
  display: block;
  height: 4px;
  width: var(--w, 0);
  background: #d7a15a;
}

.stats-bar em {
  font-style: normal;
  color: var(--sidebar-text);
  text-align: right;
}

.stats-note {
  margin: 8px 0 0;
  font-size: 11px;
  color: #8b97a6;
}

.menu-btn {
  display: none;
}

.main {
  margin-left: 280px;
  padding: 40px 48px 80px;
  max-width: 1120px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.hero-meta span {
  font-size: 12px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: var(--paper);
}

.hero h2,
.section-head h3 {
  margin: 0 0 10px;
  font-size: 32px;
  letter-spacing: -0.02em;
  font-weight: 650;
}

.lede {
  font-size: 17px;
  color: var(--muted);
  max-width: 46em;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 28px;
}

.principle {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 16px 18px;
}

.principle strong {
  display: block;
  margin-bottom: 6px;
}

.principle span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  margin-top: 64px;
}

.section.last {
  margin-bottom: 40px;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.stack {
  margin-top: 24px;
}

.layer {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  box-shadow: var(--shadow);
}

.layer-toggle {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  text-align: left;
  background: none;
  border: 0;
  padding: 18px 20px 8px;
  cursor: pointer;
  color: inherit;
  font: inherit;
}

.layer-index {
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.layer-copy h4 {
  margin: 0 0 4px;
  font-size: 18px;
}

.layer-copy em {
  font-style: normal;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  margin-left: 8px;
}

.layer-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.chevron {
  margin-left: auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid #8b97a6;
  border-bottom: 2px solid #8b97a6;
  transform: rotate(45deg);
  margin-top: 12px;
}

.layer.is-open .chevron {
  transform: rotate(-135deg);
  margin-top: 16px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 4px 20px 16px 72px;
}

.chips span {
  font-size: 12px;
  padding: 3px 8px;
  background: #efe8db;
  color: #3b4654;
}

.layer-body {
  display: none;
  padding: 0 20px 18px 72px;
  color: var(--muted);
  font-size: 14px;
}

.layer.is-open .layer-body {
  display: block;
}

.callout {
  background: #efe8db;
  color: var(--ink);
  padding: 10px 12px;
  margin-bottom: 10px;
  font-size: 13px;
}

.stack-arrow {
  width: 1px;
  height: 18px;
  background: #b8b1a4;
  margin: 0 auto;
}

.orch-grid,
.rail-grid,
.core-grid,
.two-col {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

.orch-grid,
.two-col {
  grid-template-columns: repeat(3, 1fr);
}

.two-col {
  grid-template-columns: 1fr 1fr;
}

.rail-grid {
  grid-template-columns: repeat(4, 1fr);
}

.core-grid {
  grid-template-columns: 1.2fr 1.2fr 0.9fr;
}

.card,
.panel,
.rail {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 18px;
}

.card h4,
.panel h4,
.rail strong,
.subhead {
  margin: 0 0 10px;
  font-size: 16px;
}

.subhead {
  margin-top: 28px;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.card ul,
.dense {
  margin: 0;
  padding-left: 18px;
}

.card li,
.dense li {
  margin: 6px 0;
}

.card p {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 14px;
}

.card p:last-child {
  margin-bottom: 0;
}

.tcc-flow {
  margin-top: 16px;
}

.tcc-try {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 12px 0;
}

.tcc-try article {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  padding: 14px 16px;
}

.tcc-try p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.tcc-gate {
  text-align: center;
  font-weight: 650;
  margin: 8px 0 12px;
}

.speech a,
.term a,
.section-head a,
.panel a {
  color: var(--accent);
}

.rail header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 8px;
}

.rail header span,
.muted {
  color: var(--muted);
  font-size: 13px;
}

.rail p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.panel p {
  margin: 0 0 10px;
}

.panel p:last-child {
  margin-bottom: 0;
}

.table-wrap {
  margin-top: 20px;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--paper);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th,
td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

thead th {
  background: #efe8db;
  font-weight: 650;
}

tbody th {
  width: 120px;
  color: var(--muted);
  font-weight: 600;
}

tr:last-child th,
tr:last-child td {
  border-bottom: 0;
}

.pipeline {
  margin-top: 20px;
}

.pipe-start,
.pipe-step {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 14px 18px;
  position: relative;
}

.pipe-start {
  font-weight: 650;
  border-left: 4px solid var(--accent);
}

.pipe-step {
  margin-top: 12px;
  padding-left: 18px;
}

.pipe-step::before {
  content: "";
  position: absolute;
  left: 28px;
  top: -12px;
  width: 1px;
  height: 12px;
  background: #b8b1a4;
}

.pipe-step h4 {
  margin: 0 0 4px;
  font-size: 15px;
}

.pipe-step p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.outcomes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.outcome {
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: var(--paper);
  font-size: 14px;
  color: var(--muted);
}

.outcome strong {
  display: block;
  margin-bottom: 4px;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.outcome.pass strong { color: var(--ok); }
.outcome.fail strong { color: var(--bad); }
.outcome.review strong { color: var(--warn); }

.contrast {
  margin-top: 16px;
  border-left: 4px solid var(--accent);
}

.triangle {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 14px 0;
}

.triangle span {
  text-align: center;
  padding: 12px 8px;
  background: #efe8db;
  font-size: 13px;
  font-weight: 650;
}

.flow {
  margin-top: 20px;
}

.flow-row {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 12px;
}

.flow-box {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 12px 16px;
  font-size: 14px;
  min-width: 220px;
}

.flow-line {
  flex: 1;
  height: 1px;
  background: #b8b1a4;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 8px;
}

.split-card {
  padding: 16px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.split-card p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.split-card.ok { border-top: 3px solid var(--ok); }
.split-card.bad { border-top: 3px solid var(--bad); }

.wrong,
.right {
  padding: 10px 12px;
}

.wrong {
  background: #f8e8e6;
}

.right {
  background: #e7f2ef;
}

code {
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  background: #efe8db;
  padding: 1px 5px;
}

.timeline {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.timeline li {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.timeline li:last-child {
  border-bottom: 1px solid var(--line);
}

.timeline span {
  color: var(--muted);
  font-size: 13px;
  padding-top: 3px;
}

.timeline strong {
  display: block;
}

.timeline p {
  margin: 4px 0 0;
  color: var(--muted);
}

.quotes {
  display: grid;
  gap: 10px;
  margin: 24px 0;
}

blockquote {
  margin: 0;
  padding: 14px 18px;
  background: var(--paper);
  border-left: 4px solid #d7a15a;
  color: var(--ink);
  font-size: 15px;
}

.hub-pipe {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}

.hub-pipe li {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 14px 12px 16px;
}

.hub-pipe li::after {
  content: "›";
  position: absolute;
  right: -9px;
  top: 42%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 22px;
  font-weight: 700;
  z-index: 1;
  line-height: 1;
}

.hub-pipe li:last-child::after {
  content: none;
}

.hub-n {
  display: inline-flex;
  width: 22px;
  height: 22px;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.hub-pipe strong {
  display: block;
  font-size: 15px;
}

.hub-pipe p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.hub-states {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
}

.hub-states span {
  padding: 6px 12px;
  border: 1px solid var(--line);
  background: var(--paper);
  font-size: 13px;
  font-weight: 650;
}

.hub-states span.is-ok {
  border-color: var(--ok);
  color: var(--ok);
  background: #e7f4f2;
}

.hub-states span.is-bad {
  border-color: var(--bad);
  color: var(--bad);
  background: #f8e8e6;
}

.hub-states i {
  font-style: normal;
  color: var(--muted);
  font-size: 12px;
}

.hub-states i::before {
  content: "→ ";
  color: var(--accent);
}

.hub-states-note {
  margin: 8px 0 0;
}

.kernel-flow {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

.kf-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.kf-row article {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 14px 16px;
}

.kf-row h4 {
  margin: 0;
  font-size: 15px;
}

.kf-row p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13.5px;
}

.kf-core {
  text-align: center;
  padding: 12px 16px;
  background: var(--accent);
  color: #fff;
  font-weight: 650;
  font-size: 14px;
}

.seq-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--paper);
}

.seq-list li {
  display: grid;
  grid-template-columns: minmax(108px, 0.9fr) 28px minmax(120px, 1.1fr) 1.6fr;
  gap: 8px;
  align-items: center;
  padding: 9px 14px;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
}

.seq-list li:last-child {
  border-bottom: 0;
}

.seq-list b {
  font-weight: 650;
}

.seq-list i {
  font-style: normal;
  color: var(--accent);
  font-weight: 700;
  text-align: center;
}

.seq-list i::before {
  content: "→";
}

.seq-list li.is-back i::before {
  content: "←";
}

.seq-list span {
  color: var(--muted);
}

.seq-list li.is-note {
  display: block;
  background: #efe8db;
  color: var(--muted);
  font-size: 13px;
}

.probe {
  margin-top: 14px;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 16px 18px 18px;
}

.probe-head {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-start;
}

.probe-n {
  flex: 0 0 auto;
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
  padding-top: 3px;
}

.probe-head h4 {
  flex: 1;
  margin: 0;
  font-size: 16px;
  line-height: 1.45;
}

.probe-tag {
  flex: 0 0 auto;
  font-size: 12px;
  padding: 2px 8px;
  border: 1px solid var(--line);
  white-space: nowrap;
}

.probe-tag.is-ask {
  color: var(--accent);
}

.probe-tag.is-map {
  color: var(--ok);
  border-color: var(--ok);
}

.probe-why {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.probe h5 {
  margin: 14px 0 6px;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.probe-ask {
  margin: 0;
  padding-left: 18px;
}

.probe-ask li {
  margin: 4px 0;
}

.probe-listen {
  margin: 12px 0 0;
  padding: 10px 12px;
  background: #f7f2e8;
  font-size: 14px;
}

.ask-who {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.ask-who span {
  font-size: 12px;
  padding: 2px 8px;
  background: #efe8db;
  color: #3b4654;
}

.hub-board {
  margin-top: 20px;
  border: 1px solid var(--line);
  background: var(--paper);
  overflow-x: auto;
}

.hub-board-grid {
  min-width: 860px;
  display: grid;
  grid-template-columns: 108px 1fr 1.35fr 1fr;
}

.hub-board-grid > * {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.55;
}

.hub-board-grid > *:nth-child(4n) {
  border-right: 0;
}

.hub-board-grid > *:nth-last-child(-n + 4) {
  border-bottom: 0;
}

.hub-h {
  background: #161d27;
  color: #e8edf2;
  font-size: 12px;
  letter-spacing: 0.06em;
  font-weight: 650;
}

.hub-h.me {
  background: var(--accent);
  color: #fff;
}

.hub-step-id {
  background: #efe8db;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}

.hub-step-id span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.hub-cell.me {
  background: #f3f7fb;
}

.hub-cell strong {
  font-weight: 650;
}

.hub-branch {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.hub-branch article {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 14px 16px;
}

.hub-branch h4 {
  margin: 0 0 6px;
  font-size: 15px;
}

.hub-branch p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.mind-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0 8px;
}

.mind-jump a {
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--accent);
  text-decoration: none;
  padding: 6px 10px;
  font-size: 13px;
}

.mind {
  margin-top: 20px;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 22px 14px 18px;
  overflow-x: auto;
}

.mind-root {
  display: table;
  margin: 0 auto;
  background: var(--accent);
  color: #fff;
  padding: 10px 20px;
  font-weight: 650;
  font-size: 15px;
  text-align: center;
}

.mind-root.is-plain {
  background: #161d27;
}

.mind-stem {
  width: 2px;
  height: 16px;
  margin: 0 auto;
  background: var(--accent);
}

.mind-rail {
  height: 2px;
  margin: 0 6%;
  background: var(--accent);
}

.mind-cols {
  display: grid;
  gap: 10px;
  margin-top: 0;
}

.mind-cols-6 { grid-template-columns: repeat(6, minmax(140px, 1fr)); }
.mind-cols-5 { grid-template-columns: repeat(5, minmax(150px, 1fr)); }
.mind-cols-4 { grid-template-columns: repeat(4, minmax(160px, 1fr)); }
.mind-cols-3 { grid-template-columns: repeat(3, minmax(180px, 1fr)); }

.mind-cols article {
  position: relative;
  border: 1px solid var(--line);
  background: #fffcf7;
  padding: 12px 10px 12px;
  margin-top: 14px;
}

.mind-cols article::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -14px;
  width: 2px;
  height: 14px;
  background: var(--accent);
  transform: translateX(-50%);
}

.mind-cols h4 {
  margin: 0 0 8px;
  font-size: 13px;
  color: var(--accent);
}

.mind-cols ul {
  margin: 0;
  padding-left: 16px;
  color: var(--muted);
  font-size: 12.5px;
}

.mind-cols li {
  margin: 3px 0;
}

.mind-years {
  grid-template-columns: repeat(5, 1fr);
}

.pipe-4 {
  grid-template-columns: repeat(4, 1fr);
}

.d-swim {
  margin-top: 16px;
  border: 1px solid var(--line);
  background: var(--paper);
  overflow-x: auto;
}

.d-swim-grid {
  min-width: 860px;
  display: grid;
  grid-template-columns: 108px repeat(4, 1fr);
}

.d-swim-grid > * {
  padding: 10px 12px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.45;
}

.d-swim-grid > *:nth-child(5n) {
  border-right: 0;
}

.d-swim-h {
  background: #efe8db;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: #3b4654;
  font-weight: 650;
}

.d-swim-h.me,
.d-swim-cell.me {
  background: #eef3f8;
}

.d-swim-lane {
  font-weight: 650;
  background: #f7f2e8;
}

.key-phases {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 16px;
}

.key-phases article {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 14px 14px 16px;
  position: relative;
}

.key-phases .kp-n {
  display: block;
  color: var(--accent);
  font-weight: 700;
  font-size: 12px;
  margin-bottom: 6px;
}

.key-phases h4 {
  margin: 0 0 8px;
  font-size: 15px;
}

.key-phases p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
}

.case-pipe {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 16px;
}

.case-pipe article {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 14px;
}

.case-pipe strong {
  display: block;
  margin-bottom: 6px;
}

.case-pipe p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
}

.impact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.fsm-illegal {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.fsm-illegal article {
  border: 1px solid var(--line);
  background: #f8e8e6;
  padding: 12px 14px;
  font-size: 13.5px;
}

.fsm-illegal strong {
  display: block;
  margin-bottom: 4px;
}

.slo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.slo-grid article {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 14px 16px;
}

.slo-grid article.is-first {
  border-top: 3px solid var(--accent);
}

.slo-grid .slo-rank {
  font-size: 12px;
  color: var(--accent);
  font-weight: 700;
}

.slo-grid h4 {
  margin: 4px 0 8px;
}

.slo-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
}

.layer-pin {
  display: inline-block;
  font-size: 11px;
  padding: 1px 7px;
  margin: 0 2px 2px 0;
  background: #efe8db;
  color: #3b4654;
  white-space: nowrap;
}

@media (max-width: 1100px) {
  .principles,
  .orch-grid,
  .rail-grid,
  .core-grid,
  .outcomes,
  .split,
  .two-col,
  .tcc-try,
  .hub-branch {
    grid-template-columns: 1fr 1fr;
  }

  .hub-pipe {
    grid-template-columns: repeat(3, 1fr);
    row-gap: 18px;
  }

  .hub-pipe li:nth-child(3)::after {
    content: "⌄";
    right: auto;
    left: 50%;
    top: auto;
    bottom: -18px;
    transform: translateX(-50%);
  }

  .hub-pipe li:nth-child(6)::after {
    content: none;
  }

  .mind-cols-6,
  .mind-cols-5,
  .mind-years {
    grid-template-columns: repeat(3, minmax(160px, 1fr));
  }

  .mind-cols-4 {
    grid-template-columns: repeat(2, minmax(180px, 1fr));
  }

  .pipe-4,
  .key-phases,
  .case-pipe,
  .slo-grid,
  .fsm-illegal {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }

  .sidebar.is-open {
    transform: none;
  }

  .key-phases,
  .case-pipe,
  .slo-grid,
  .fsm-illegal,
  .impact-grid {
    grid-template-columns: 1fr;
  }

  .menu-btn {
    display: block;
    position: fixed;
    top: 14px;
    left: 14px;
    z-index: 30;
    border: 1px solid var(--line);
    background: var(--paper);
    padding: 8px 12px;
    font: inherit;
    cursor: pointer;
  }

  .main {
    margin-left: 0;
    padding: 64px 18px 48px;
  }

  .hero h2,
  .section-head h3 {
    font-size: 26px;
  }

  .principles,
  .orch-grid,
  .rail-grid,
  .core-grid,
  .outcomes,
  .split,
  .two-col,
  .tcc-try,
  .timeline li,
  .hub-pipe,
  .hub-branch {
    grid-template-columns: 1fr;
  }

  .hub-pipe {
    row-gap: 16px;
  }

  .hub-pipe li::after {
    content: "⌄";
    right: auto;
    left: 50%;
    top: auto;
    bottom: -18px;
    transform: translateX(-50%);
  }

  .mind-cols-6,
  .mind-cols-5,
  .mind-cols-4,
  .mind-cols-3,
  .mind-years,
  .pipe-4 {
    grid-template-columns: 1fr;
  }

  .mind-rail {
    display: none;
  }

  .chips,
  .layer-body {
    padding-left: 20px;
  }

  .flow-row {
    flex-direction: column;
    align-items: stretch;
  }

  .flow-line {
    width: 1px;
    height: 12px;
    flex: none;
    margin: 0 auto;
  }

  .kf-row {
    grid-template-columns: 1fr;
  }

  .seq-list li:not(.is-note) {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .seq-list i {
    text-align: left;
  }
}

.qa-card {
  background: var(--paper);
  border: 1px solid var(--line);
  margin-top: 14px;
}

.qa-toggle {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  text-align: left;
  background: none;
  border: 0;
  padding: 16px 18px;
  cursor: pointer;
  color: inherit;
  font: inherit;
}

.qa-num {
  flex: 0 0 auto;
  min-width: 36px;
  padding: 2px 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.qa-title {
  flex: 1;
  font-size: 16px;
  font-weight: 650;
  line-height: 1.45;
}

.qa-toggle .chevron {
  margin-top: 8px;
}

.qa-card.is-open .chevron {
  transform: rotate(-135deg);
  margin-top: 12px;
}

.qa-body {
  display: none;
  padding: 0 18px 18px 66px;
}

.qa-card.is-open .qa-body {
  display: block;
}

.qa-body h5 {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.speech {
  background: #f7f2e8;
  padding: 14px 16px;
  margin-bottom: 14px;
}

.speech p {
  margin: 0 0 12px;
}

.speech p:last-child {
  margin-bottom: 0;
}

.anchor {
  border-left: 4px solid #d7a15a;
  padding: 10px 14px;
  background: var(--paper);
}

.anchor h5 {
  margin-bottom: 6px;
}

.anchor p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.slot {
  background: #efe0c4;
  color: var(--ink);
  padding: 0 4px;
  font-style: normal;
}

.jump-note {
  margin-top: 24px;
  color: var(--muted);
  font-size: 14px;
}

.jump-note a {
  color: var(--accent);
}

.term-toolbar {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  margin-top: 24px;
}

#termSearch {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: 15px;
  padding: 10px 12px;
}

.term-filters {
  display: flex;
  gap: 6px;
}

.filter-btn {
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--muted);
  font: inherit;
  font-size: 13px;
  padding: 8px 12px;
  cursor: pointer;
}

.filter-btn.is-active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.term-count {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.term-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

.term {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 14px 16px;
}

.term[hidden],
.term-section[hidden] {
  display: none;
}

.term.is-must {
  border-left: 4px solid var(--accent);
}

.term.is-plus {
  border-left: 4px solid #d7a15a;
}

.term h4,
.term-head h4 {
  margin: 0 0 8px;
  font-size: 15px;
}

.term h4 em,
.term-head h4 em {
  font-style: normal;
  color: var(--muted);
  font-weight: 500;
  font-size: 12px;
  margin-left: 6px;
}

.term-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.term-tag {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 2px 6px;
}

.term-tag.must {
  background: #dce7f2;
  color: var(--accent);
}

.term-tag.plus {
  background: #efe0c4;
  color: #8a5a1a;
}

.term p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 1100px) {
  .term-grid,
  .term-toolbar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .qa-body {
    padding-left: 18px;
  }
}