:root {
  --ink:#14171c; --ink-muted:#565c64; --ink-faint:#8a8f97;
  --paper:#f6f5f0; --surface:#ffffff; --line:#e2ded2;
  --steel:#28394a;
  --signal:#ff4405; --signal-dark:#b8330a; --resolved:#1c7a4b; --danger:#b3261e;

  --syntax-keyword:#b8330a; --syntax-function:#6b4fb5; --syntax-constant:#1c6fae;
  --syntax-string:#1c7a4b; --syntax-comment:#8a8f97;

  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans",Helvetica,Arial,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --radius: 3px;
}

/* Reset */

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

html, body {
  margin: 0;
  padding: 0;
}

img, svg {
  max-width: 100%;
  display: block;
}

/* Base */

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  line-height: 1.5;
  background: var(--paper);
  color: var(--ink-muted);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

h1 {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  line-height: 1.05;
  margin: 0 0 0.5em;
}

h2 {
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  margin: 0 0 0.6em;
}

h3 {
  font-size: 1.1rem;
  margin: 0 0 0.4em;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--steel);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--steel);
  outline-offset: 2px;
}

/* Layout */

.container {
  width: 100%;
  max-width: 1012px;
  margin: 0 auto;
  padding: 0 24px;
}

.prose {
  width: 100%;
  max-width: 68ch;
  margin: 0 auto;
}

.prose p {
  color: var(--ink-muted);
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 18px;
  padding-bottom: 18px;
}

.site-header .site-name {
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}

.site-header-right {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.site-header nav {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

.site-header nav a {
  font-family: var(--font-mono);
  color: var(--ink-muted);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.site-header nav a:hover {
  color: var(--ink);
  border-color: var(--steel);
  text-decoration: none;
}

.btn-nav {
  padding: 8px 16px;
  font-size: 0.8rem;
}

/* Footer */

.site-footer {
  background: var(--paper);
  border-top: 1px solid var(--line);
  padding: 40px 0;
  color: var(--ink-muted);
}

.site-footer nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

.site-footer nav a {
  color: var(--ink-muted);
}

.site-footer nav a:hover {
  color: var(--steel);
}

.site-footer .copyright {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-muted);
}

/* Buttons */

.btn-primary {
  display: inline-block;
  background: var(--signal-dark);
  color: #ffffff;
  border: none;
  border-radius: var(--radius);
  padding: 13px 24px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary:hover {
  background: #8f2807;
  text-decoration: none;
}

.btn-primary:focus-visible {
  outline: 2px solid var(--signal-dark);
  outline-offset: 2px;
}

/* Forms */

input, textarea, select {
  font-family: var(--font-sans);
  font-size: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 10px 14px;
  background: var(--surface);
  color: var(--ink);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--steel);
  box-shadow: 0 0 0 3px rgba(40, 57, 74, 0.15);
}

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

.field-error-message {
  color: var(--danger);
  font-size: 0.875rem;
}

.field-success {
  color: var(--resolved);
}

.signup-success {
  color: var(--resolved);
  font-weight: 600;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.off-screen {
  position: absolute;
  left: -9999px;
}

/* Bands */

.band {
  background: var(--paper);
  padding: 88px 0;
  border-top: 1px solid var(--line);
}

.band:first-child {
  border-top: none;
}

.band-subtle {
  background: var(--surface);
  padding: 88px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

@media (max-width: 640px) {
  .band, .band-subtle {
    padding: 56px 0;
  }
}

/* Kicker */

.kicker {
  font-family: var(--font-mono);
  color: var(--ink-muted);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  display: block;
  margin-bottom: 14px;
}

/* Ledger: the status-translation signature element */

.ledger {
  margin-top: 40px;
  max-width: 560px;
  background: var(--surface);
  border: 1px solid var(--ink);
}

.ledger-label {
  margin: 0;
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--ink);
  color: var(--paper);
}

.ledger-row {
  display: grid;
  grid-template-columns: minmax(90px, auto) 1fr auto 1fr;
  align-items: baseline;
  gap: 10px;
  padding: 15px 18px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  border-bottom: 1px solid var(--line);
}

.ledger-row:last-child {
  border-bottom: none;
}

.ledger-tag {
  color: var(--steel);
  font-size: 0.75rem;
}

.ledger-raw {
  color: var(--signal-dark);
}

.ledger-arrow {
  color: var(--ink-muted);
}

.ledger-resolved {
  color: var(--resolved);
  font-weight: 700;
}

@media (max-width: 640px) {
  .ledger-row {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 12px 16px;
  }

  .ledger-arrow::before {
    content: "";
  }
}

/* Persona list */

.persona-list {
  border-top: 1px solid var(--line);
}

.persona-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 24px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.persona-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--steel);
  white-space: nowrap;
  padding-top: 0.2em;
}

.persona-row h3 {
  margin: 0 0 0.4em;
}

.persona-row p {
  margin: 0;
  color: var(--ink-muted);
}

@media (max-width: 640px) {
  .persona-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

/* Post list (blog index) */

.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.post-list li {
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.post-list time {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-muted);
}

.post-list a {
  display: block;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--ink);
  margin: 0.35em 0;
}

.post-list a:hover {
  color: var(--steel);
  text-decoration: none;
}

.post-list p {
  margin: 0;
  color: var(--ink-muted);
}

/* Horizontal scroll containers */

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

table {
  border-collapse: collapse;
}

/* Admin */

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-bottom: 32px;
}

.admin-table th,
.admin-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.admin-table th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

/* Syntax highlighting (pygments codehilite output) */

.highlight {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 18px;
  font-family: var(--font-mono);
  overflow-x: auto;
}

.highlight .k, .highlight .kd, .highlight .kn, .highlight .kr, .highlight .kt {
  color: var(--syntax-keyword);
}

.highlight .nf, .highlight .fm, .highlight .nd {
  color: var(--syntax-function);
}

.highlight .nb, .highlight .no, .highlight .mi, .highlight .mf, .highlight .mh,
.highlight .kc, .highlight .bp, .highlight .nt {
  color: var(--syntax-constant);
}

.highlight .s, .highlight .s1, .highlight .s2, .highlight .sd, .highlight .sb {
  color: var(--syntax-string);
}

.highlight .c, .highlight .c1, .highlight .cm, .highlight .ch, .highlight .cs {
  color: var(--syntax-comment);
}

.highlight .n, .highlight .p, .highlight .o {
  color: var(--ink);
}

.highlight .gh, .highlight .gu {
  font-weight: bold;
}

/* Responsive */

@media (max-width: 768px) {
  .site-header .container {
    flex-direction: column;
    align-items: flex-start;
  }
}