:root {
  color-scheme: light;
  --ink: #101828;
  --ink-2: #1d2939;
  --muted: #667085;
  --muted-2: #98a2b3;
  --line: #d0d5dd;
  --line-soft: #eaecf0;
  --paper: #ffffff;
  --wash: #f8fafc;
  --wash-2: #f2f4f7;
  --accent: #355cff;
  --accent-2: #173eb8;
  --success: #027a48;
  --success-bg: #ecfdf3;
  --warning: #b54708;
  --warning-bg: #fffaeb;
  --danger: #b42318;
  --danger-bg: #fff1f3;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: Inter, "IBM Plex Sans", "Noto Sans JP", "Hiragino Sans", "Yu Gothic UI", "Yu Gothic", system-ui, sans-serif;
  --radius: 8px;
  --shadow: 0 16px 60px rgb(16 24 40 / 8%);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--wash);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.55;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--accent-2);
}

button,
input,
select {
  font: inherit;
}

button,
.button {
  min-height: 42px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: var(--ink);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease, transform 120ms ease;
}

button:hover,
.button:hover {
  background: #000;
  color: #fff;
}

button:focus-visible,
.button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid rgb(53 92 255 / 30%);
  outline-offset: 2px;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.button.secondary,
button.secondary {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}

.button.secondary:hover,
button.secondary:hover {
  border-color: var(--ink);
  background: var(--wash);
}

button.danger {
  border-color: var(--danger);
  background: var(--danger);
}

code,
pre {
  font-family: var(--mono);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  transform: translateY(-140%);
  background: var(--ink);
  color: #fff;
  padding: 10px 12px;
  border-radius: var(--radius);
  z-index: 100;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--line-soft);
  background: rgb(248 250 252 / 94%);
  backdrop-filter: blur(16px);
}

.header-inner,
.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  min-width: 0;
}

.header-inner {
  min-height: 72px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 20px;
  align-items: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  font-weight: 800;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.capital-rail-mark {
  display: block;
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
}

.brand-text {
  display: grid;
  gap: 1px;
  line-height: 1.05;
  min-width: 0;
}

.brand-name {
  color: var(--ink);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.01em;
}

.brand small,
.brand-text small {
  display: block;
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
  line-height: 1.2;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 6px;
}

.nav a {
  padding: 9px 10px;
  border-radius: var(--radius);
  color: var(--muted);
  font-weight: 700;
  font-size: 14px;
}

.nav a[aria-current="page"],
.nav a:hover {
  background: #fff;
  color: var(--ink);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-pill,
.badge,
.notice-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 7px 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

.status-pill::before,
.badge.success::before,
.badge.warning::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
}

.badge.warning::before {
  background: var(--warning);
}

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}

.lang-toggle button {
  border: 0;
  border-radius: 0;
  min-height: 36px;
  padding: 7px 9px;
  background: #fff;
  color: var(--muted);
}

.lang-toggle button.active {
  background: var(--ink);
  color: #fff;
}

.mobile-menu {
  display: none;
}

.section {
  padding: 86px 0;
}

.section.tight {
  padding: 48px 0;
}

.hero {
  padding: 92px 0 64px;
  background:
    linear-gradient(180deg, #fff 0%, var(--wash) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);
  gap: 56px;
  align-items: start;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-2);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.08em;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.08;
  color: var(--ink);
}

h1 {
  font-size: clamp(46px, 7vw, 82px);
  max-width: 840px;
}

h2 {
  font-size: clamp(32px, 4vw, 52px);
}

h3 {
  font-size: 22px;
}

h4 {
  font-size: 17px;
}

p {
  color: var(--muted);
}

.lede {
  font-size: 20px;
  max-width: 760px;
  color: var(--ink-2);
}

.subtle-line,
.footer-note {
  color: var(--muted);
  font-size: 14px;
}

.hero-actions,
.actions,
.toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.hero-actions {
  margin: 30px 0;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0;
}

.notice {
  border: 1px solid var(--line);
  background: #fff;
  border-left: 4px solid var(--accent);
  padding: 14px 16px;
  border-radius: var(--radius);
  color: var(--ink-2);
}

.notice.warning {
  border-left-color: var(--warning);
  background: var(--warning-bg);
}

.notice.success {
  border-left-color: var(--success);
  background: var(--success-bg);
}

.terminal-panel {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line-soft);
}

.panel-body {
  padding: 18px;
}

.metric-grid,
.stats-grid,
.card-grid,
.contract-grid,
.workspace-grid,
.portal-grid {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.metric-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stats-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.contract-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.workspace-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.portal-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.metric,
.stat,
.card,
.contract-card,
.invoice-card,
.form-panel,
.table-wrap {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  min-width: 0;
  max-width: 100%;
}

.metric,
.stat,
.card,
.contract-card,
.invoice-card,
.form-panel {
  padding: 18px;
}

.metric span,
.stat span,
.label {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.metric strong,
.stat strong {
  display: block;
  margin-top: 6px;
  font-size: 24px;
}

.stat small,
.metric small {
  color: var(--muted);
}

.flow-diagram {
  display: grid;
  gap: 10px;
}

.thesis-stack {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 56px;
  align-items: start;
}

.risk-intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 24px;
  align-items: stretch;
}

.risk-stack {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.risk-layer {
  display: grid;
  gap: 10px;
}

.layer-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.layer-head h3 {
  margin-bottom: 0;
}

.status-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.status-board.compact {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 18px;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}

.status-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  min-width: 0;
}

.status-board.compact .status-item {
  border: 0;
  border-right: 1px solid var(--line-soft);
  border-radius: 0;
}

.status-board.compact .status-item:last-child {
  border-right: 0;
}

.status-item span {
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 800;
}

.status-item h3 {
  font-size: 16px;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.status-item p {
  margin-top: 6px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 1.55;
}

.flow-step {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.flow-step span {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
}

.architecture {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  padding: 18px;
  overflow-x: auto;
}

.architecture svg {
  width: 100%;
  min-width: 760px;
  height: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

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

th {
  color: var(--ink);
  font-size: 13px;
}

td {
  color: var(--muted);
}

.table-wrap {
  overflow-x: auto;
}

.mono,
.address,
.tx-log code {
  font-family: var(--mono);
  word-break: break-all;
}

.address-row,
.deployment-row {
  display: grid;
  grid-template-columns: minmax(150px, 0.6fr) minmax(0, 1.4fr) auto;
  gap: 14px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.copy-button {
  min-height: 34px;
  padding: 6px 9px;
}

form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--ink);
  font-weight: 700;
  font-size: 14px;
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  min-height: 42px;
  padding: 10px 12px;
}

.checkbox {
  grid-template-columns: auto 1fr;
  align-items: center;
  font-weight: 600;
  color: var(--muted);
}

.checkbox input {
  width: auto;
  min-height: auto;
}

.app-layout {
  display: grid;
  grid-template-columns: 270px 1fr;
  gap: 24px;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 92px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  padding: 16px;
}

.role-list {
  display: grid;
  gap: 8px;
}

.role-list button {
  justify-content: flex-start;
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}

.role-list button.active {
  background: var(--ink);
  color: #fff;
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
  display: grid;
  gap: 8px;
}

.checklist li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.checklist li::before {
  content: "";
  width: 14px;
  height: 14px;
  margin-top: 4px;
  border-radius: 50%;
  border: 1px solid var(--line);
}

.checklist li.done::before {
  border-color: var(--success);
  background: var(--success);
}

.tx-log {
  min-height: 54px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 14px;
  color: var(--muted);
  word-break: break-word;
}

.error-text {
  color: var(--danger);
}

.success-text {
  color: var(--success);
}

.hidden {
  display: none !important;
}

.page-header {
  padding: 72px 0 34px;
  border-bottom: 1px solid var(--line-soft);
  background: #fff;
}

.page-header p {
  max-width: 820px;
}

.toc-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 40px;
  min-width: 0;
}

.toc {
  position: sticky;
  top: 92px;
  align-self: start;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  padding: 16px;
  max-height: calc(100vh - 120px);
  overflow: auto;
  min-width: 0;
  max-width: 100%;
}

.toc a {
  display: block;
  padding: 7px 0;
  color: var(--muted);
  font-size: 13px;
  overflow-wrap: anywhere;
}

.article {
  max-width: 860px;
  min-width: 0;
  width: 100%;
}

.article h1 {
  font-size: 46px;
}

.article h2 {
  margin-top: 44px;
  font-size: 30px;
}

.article h3 {
  margin-top: 26px;
}

.article p,
.article li {
  color: var(--ink-2);
}

.article pre {
  overflow: auto;
  padding: 16px;
  border-radius: var(--radius);
  background: #0b1220;
  color: #e4e7ec;
  max-width: 100%;
}

.progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: var(--progress, 0%);
  z-index: 90;
  background: var(--accent);
}

.footer {
  border-top: 1px solid var(--line-soft);
  background: #fff;
  padding: 46px 0;
}

.footer-grid {
  display: block;
  max-width: 520px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  html {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}

@media (max-width: 980px) {
  .header-inner {
    grid-template-columns: auto auto;
  }

  .mobile-menu {
    display: inline-flex;
  }

  .nav {
    display: none;
    grid-column: 1 / -1;
    justify-content: flex-start;
    flex-wrap: wrap;
    padding-bottom: 14px;
  }

  .site-header.open .nav {
    display: flex;
  }

  .header-actions .status-pill,
  .header-actions .button {
    display: none;
  }

  .hero-grid,
  .app-layout,
  .thesis-stack,
  .risk-intro-grid,
  .toc-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .status-board,
  .status-board.compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .status-board:not(.compact) .status-item {
    border: 1px solid var(--line);
  }

  .status-board.compact .status-item {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .sidebar,
  .toc {
    position: static;
    max-height: none;
  }

  .stats-grid,
  .card-grid,
  .contract-grid,
  .workspace-grid,
  .portal-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .header-inner,
  .container {
    width: min(100% - 28px, 1180px);
  }

  h1 {
    font-size: 42px;
  }

  .section {
    padding: 56px 0;
  }

  .hero {
    padding-top: 58px;
  }

  .stats-grid,
  .card-grid,
  .contract-grid,
  .workspace-grid,
  .portal-grid,
  .risk-intro-grid,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .address-row,
  .deployment-row {
    grid-template-columns: 1fr;
  }

  .status-board,
  .status-board.compact {
    grid-template-columns: 1fr;
  }

  .toolbar {
    align-items: stretch;
  }

  .toolbar > .button,
  .toolbar > button {
    width: 100%;
  }

  .header-actions {
    gap: 6px;
  }

  .brand-lockup {
    gap: 10px;
  }

  .capital-rail-mark {
    width: 28px;
    height: 28px;
  }

  .brand-name {
    font-size: 16px;
  }

  .brand-text small {
    font-size: 11px;
  }

  .lang-toggle button {
    padding: 7px;
  }
}

@media print {
  .site-header,
  .footer,
  .toc,
  .toolbar,
  .progress,
  .skip-link {
    display: none !important;
  }

  body {
    background: #fff;
  }

  .section,
  .page-header {
    padding: 0;
  }

  .container,
  .article {
    width: 100%;
    max-width: none;
  }
}