*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Phosphor palette — strict 4-color semantic system */
  --bg:           #0b0f0e;
  --bg-raised:    #0f1512;
  --bg-inset:     #080c0b;
  --phosphor:     #7ec8a0;      /* primary text — P31 green phosphor */
  --phosphor-dim: #3d6e52;      /* secondary, line numbers */
  --phosphor-hi:  #b8f0d0;      /* high emphasis, headings */
  --amber:        #d4913a;      /* rubrication — semantic red equivalent */
  --amber-dim:    #7a4e18;      /* amber secondary */
  --slate:        #4a6878;      /* marginalia — cool blue-grey */
  --slate-hi:     #7aaabb;      /* marginalia emphasis */
  --rule:         #1e3328;      /* borders, rules */
  --rule-hi:      #2d5040;      /* active borders */
  --gold:         #8a7040;      /* ornamental only */
  --gold-hi:      #c8aa60;      /* ornamental highlight */
  --scanline:     rgba(0,0,0,0.18);

  --font-body:    'Crimson Pro', Georgia, serif;
  --font-mono:    'Inconsolata', 'Courier New', monospace;

  --col-left:     48px;
  --col-margin:   240px;
  --col-gap:      24px;
}

html {
  background: #050807;
  min-height: 100vh;
  font-size: 21px;
}

/* Scanline overlay on entire viewport */
html::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    var(--scanline) 0px,
    var(--scanline) 1px,
    transparent 1px,
    transparent 3px
  );
  pointer-events: none;
  z-index: 1000;
  mix-blend-mode: multiply;
}

body {
  color: var(--phosphor);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.8;
  font-weight: 300;
  max-width: 1140px;
  margin: 40px auto;
  padding: 0;
  position: relative;
  background: var(--bg);
  border: 1px solid var(--rule-hi);
  box-shadow:
    0 0 0 1px var(--rule),
    0 0 40px rgba(126,200,160,0.04),
    0 0 120px rgba(0,0,0,0.8),
    inset 0 0 60px rgba(0,0,0,0.3);
}

/* Subtle phosphor vignette */
body::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at 50% 30%,
    rgba(126,200,160,0.03) 0%,
    transparent 70%
  );
  pointer-events: none;
}

/* ── PAGE LAYOUT: three-column Talmud structure ── */
.page {
  display: grid;
  grid-template-columns: var(--col-left) 1fr var(--col-margin);
  gap: 0;
  padding: 0;
}

.gutter {
  border-right: 1px solid var(--rule);
  padding: 0 10px 0 14px;
  position: relative;
}

.main {
  padding: 0 var(--col-gap);
  min-width: 0;
}

.margin-col {
  border-left: 1px solid var(--rule);
  padding: 0 14px;
  position: relative;
}

/* ── HEADER ── */
.doc-header {
  grid-column: 1 / -1;
  border-bottom: 1px solid var(--rule-hi);
  position: relative;
}

.header-inner {
  display: grid;
  grid-template-columns: var(--col-left) 1fr var(--col-margin);
}

.header-gutter {
  border-right: 1px solid var(--rule);
  background: var(--bg-inset);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 0;
}

.header-gutter-mark {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--phosphor-dim);
  writing-mode: vertical-rl;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.header-body {
  text-align: center;
  padding: 36px 24px 28px;
  position: relative;
}

.header-margin {
  border-left: 1px solid var(--rule);
  background: var(--bg-inset);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

/* Ornamental corner marks */
.corner-mark {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--gold);
  line-height: 1;
}

.doc-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--phosphor-hi);
  margin-bottom: 8px;
  text-shadow: 0 0 20px rgba(184,240,208,0.3);
}

.doc-subtitle {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.88rem;
  color: var(--phosphor-dim);
  letter-spacing: 0.04em;
}

/* ── ORNAMENTAL BAND ── */
.ornament-band {
  grid-column: 1 / -1;
  height: 44px;
  position: relative;
  border-bottom: 1px solid var(--rule-hi);
  overflow: hidden;
  background: var(--bg-inset);
}

.ornament-band svg {
  width: 100%;
  height: 100%;
}

/* ── SECTION HEADER ── */
.section-head-row {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: var(--col-left) 1fr var(--col-margin);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  margin: 8px 0 0;
}

.section-head-gutter {
  border-right: 1px solid var(--rule);
  background: var(--bg-inset);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--amber-dim);
}

.section-head-body {
  padding: 8px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.section-head-body::before,
.section-head-body::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--rule-hi));
}
.section-head-body::after {
  background: linear-gradient(90deg, var(--rule-hi), transparent);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--amber);
  white-space: nowrap;
  flex-shrink: 0;
  text-shadow: 0 0 12px rgba(212,145,58,0.4);
}

.section-head-margin {
  border-left: 1px solid var(--rule);
  background: var(--bg-inset);
}

/* ── CONTENT ROWS ── */
.content-row {
  display: contents;
}

/* Gutter sigils */
.gutter-cell {
  border-right: 1px solid var(--rule);
  padding: 20px 8px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.sigil {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--phosphor-dim);
  writing-mode: vertical-rl;
  letter-spacing: 0.12em;
  opacity: 0.6;
}

.main-cell {
  padding: 24px var(--col-gap) 8px;
  min-width: 0;
}

.margin-cell {
  border-left: 1px solid var(--rule);
  padding: 24px 14px 8px;
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.72rem;
  line-height: 1.55;
  color: var(--slate);
}

.margin-cell .ref {
  color: var(--slate-hi);
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 4px;
}

.margin-note {
  margin-bottom: 20px;
}

/* ── PROSE ── */
.main-cell p {
  text-align: justify;
  hyphens: auto;
  margin-bottom: 1em;
  font-weight: 300;
}

em { font-style: italic; color: var(--phosphor-hi); }

.rubric {
  color: var(--amber);
  font-style: normal;
}

/* Links in main content */
/* Sub-headings within main content (role titles, etc.) */
.main-cell p > strong:first-child:last-child {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: -0.5em;
}

.main-cell a {
  color: var(--slate-hi);
  text-decoration: none;
  border-bottom: 1px solid var(--rule-hi);
}

.main-cell a:hover {
  color: var(--phosphor-hi);
  border-bottom-color: var(--phosphor-dim);
}

.math {
  font-style: italic;
  color: var(--phosphor-hi);
  font-family: var(--font-body);
}

/* ── DROP CAP ── */
.dropcap-wrap {
  float: left;
  width: 72px;
  height: 72px;
  margin: 2px 14px 6px 0;
  position: relative;
}

.dropcap-wrap svg {
  width: 100%;
  height: 100%;
}

/* ── AXIOM BLOCK ── */
.axiom-block {
  margin: 20px 0 24px;
  border: 1px solid var(--rule-hi);
  background: var(--bg-inset);
  position: relative;
}

.axiom-header {
  padding: 6px 16px;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-raised);
}

.axiom-header-label {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  color: var(--amber);
  text-transform: uppercase;
}

.axiom-header::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.axiom-list {
  padding: 12px 0 4px;
}

.axiom {
  display: grid;
  grid-template-columns: 48px 1fr;
  padding: 5px 16px;
  gap: 12px;
  font-size: 0.92rem;
  line-height: 1.65;
  border-bottom: 1px solid rgba(30,51,40,0.6);
}

.axiom:last-child { border-bottom: none; }

.axiom-num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--amber);
  padding-top: 3px;
  letter-spacing: 0.05em;
}

/* ── CODE BLOCK ── */
.codex {
  margin: 20px 0 24px;
  border: 1px solid var(--rule-hi);
  background: var(--bg-inset);
  position: relative;
  counter-reset: codeline;
}

.codex-header {
  display: flex;
  align-items: center;
  gap: 0;
  border-bottom: 1px solid var(--rule);
  background: var(--bg-raised);
}

.codex-chrome {
  display: flex;
  gap: 6px;
  padding: 8px 12px;
  align-items: center;
  border-right: 1px solid var(--rule);
}

.codex-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--rule-hi);
  border: 1px solid var(--rule-hi);
}

.codex-caption {
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  color: var(--phosphor-dim);
  text-transform: uppercase;
  flex: 1;
}

.codex-lang {
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--amber-dim);
  border-left: 1px solid var(--rule);
  letter-spacing: 0.1em;
}

.codex-body {
  padding: 14px 0 10px;
  font-family: var(--font-mono);
  font-size: 0.81rem;
  line-height: 1.7;
}

.cl {
  display: flex;
  padding: 0 16px 0 0;
  gap: 0;
}

.cl:hover {
  background: rgba(126,200,160,0.03);
}

.cl-num {
  min-width: 44px;
  padding: 0 12px;
  color: var(--phosphor-dim);
  user-select: none;
  font-size: 0.68rem;
  opacity: 0.5;
  text-align: right;
  border-right: 1px solid var(--rule);
  margin-right: 14px;
  line-height: inherit;
  counter-increment: codeline;
}

.cl-num::before {
  content: counter(codeline, decimal-leading-zero);
}

.cl-code { flex: 1; white-space: pre; }

/* Syntax */
.kw  { color: var(--phosphor-hi); font-weight: 500; }
.ty  { color: var(--amber); }
.cm  { color: var(--slate); font-style: italic; }
.nm  { color: var(--phosphor); }
.op  { color: var(--gold-hi); }
.st  { color: var(--slate-hi); }

/* ── TABLE ── */
.construction-wrap {
  margin: 20px 0 24px;
  border: 1px solid var(--rule-hi);
  overflow: hidden;
}

.construction-caption {
  padding: 6px 16px;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  color: var(--amber);
  text-transform: uppercase;
  border-bottom: 1px solid var(--rule);
  background: var(--bg-raised);
}

table.construction {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.87rem;
}

table.construction th {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--phosphor-dim);
  text-transform: uppercase;
  padding: 8px 16px;
  text-align: left;
  border-bottom: 1px solid var(--rule-hi);
  background: var(--bg-inset);
}

table.construction td {
  padding: 8px 16px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
  line-height: 1.5;
}

table.construction tr:last-child td { border-bottom: none; }

table.construction td:first-child {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--amber);
  white-space: nowrap;
  font-style: normal;
  border-right: 1px solid var(--rule);
}

table.construction tr:hover td {
  background: rgba(126,200,160,0.02);
}

/* ── HORIZONTAL RULE ── */
.section-rule {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: var(--col-left) 1fr var(--col-margin);
  height: 1px;
}

.section-rule > * { border-top: 1px solid var(--rule); }
.section-rule > *:nth-child(2) { border-color: var(--rule-hi); }

/* ── FOOTER ── */
.doc-footer {
  grid-column: 1 / -1;
  border-top: 1px solid var(--rule-hi);
  display: grid;
  grid-template-columns: var(--col-left) 1fr var(--col-margin);
}

.footer-gutter {
  border-right: 1px solid var(--rule);
  background: var(--bg-inset);
}

.footer-body {
  padding: 14px 24px;
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--phosphor-dim);
  letter-spacing: 0.1em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-margin {
  border-left: 1px solid var(--rule);
  background: var(--bg-inset);
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--phosphor-dim);
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

/* Thin top accent bar */
body > .accent-bar {
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--amber-dim) 20%,
    var(--amber) 50%,
    var(--amber-dim) 80%,
    transparent 100%
  );
}

/* Status indicators in header margin */
.status-indicators {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
}

.status-pip {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--phosphor-dim);
  box-shadow: 0 0 4px rgba(126,200,160,0.4);
}
.status-pip.active {
  background: var(--phosphor);
  box-shadow: 0 0 8px rgba(126,200,160,0.7);
}
.status-pip.amber {
  background: var(--amber);
  box-shadow: 0 0 8px rgba(212,145,58,0.6);
}

/* ── PROSE (single-column for regular posts) ── */
.prose-wrap {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  border-top: 1px solid var(--rule);
}

.prose {
  max-width: 680px;
  width: 100%;
  padding: 32px 24px;
}

.prose p {
  text-align: justify;
  hyphens: auto;
  margin-bottom: 1em;
  font-weight: 300;
}

.prose h1, .prose h2, .prose h3, .prose h4 {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--phosphor-hi);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 1.5em 0 0.5em;
}

.prose h1 { font-size: 0.72rem; letter-spacing: 0.25em; text-shadow: 0 0 20px rgba(184,240,208,0.3); }
.prose h2 { font-size: 0.65rem; letter-spacing: 0.2em; color: var(--amber); text-shadow: 0 0 12px rgba(212,145,58,0.4); }
.prose h3 { font-size: 0.62rem; color: var(--phosphor); }

.prose a {
  color: var(--slate-hi);
  text-decoration: none;
  border-bottom: 1px solid var(--rule-hi);
}

.prose a:hover {
  color: var(--phosphor-hi);
  border-bottom-color: var(--phosphor-dim);
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--phosphor-hi);
  background: var(--bg-inset);
  padding: 2px 6px;
  border: 1px solid var(--rule);
}

.prose pre {
  background: var(--bg-inset);
  border: 1px solid var(--rule-hi);
  padding: 16px;
  overflow-x: auto;
  margin: 20px 0;
  font-family: var(--font-mono);
  font-size: 0.81rem;
  line-height: 1.7;
}

.prose pre code {
  background: none;
  border: none;
  padding: 0;
}

.prose blockquote {
  border-left: 2px solid var(--amber-dim);
  padding-left: 16px;
  margin: 20px 0;
  color: var(--phosphor-dim);
  font-style: italic;
}

.prose ul, .prose ol {
  padding-left: 24px;
  margin-bottom: 1em;
}

.prose li {
  margin-bottom: 0.3em;
}

.prose hr {
  border: none;
  border-top: 1px solid var(--rule-hi);
  margin: 24px 0;
}

.prose img {
  max-width: 100%;
  border: 1px solid var(--rule-hi);
}

/* ── NAVIGATION ── */
a.header-gutter-mark {
  color: var(--phosphor-dim);
  text-decoration: none;
  transition: color 0.2s, text-shadow 0.2s;
}

a.header-gutter-mark:hover {
  color: var(--phosphor);
  text-shadow: 0 0 8px rgba(126,200,160,0.4);
}

.footer-nav {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--phosphor-dim);
  text-decoration: none;
  letter-spacing: 0.1em;
  transition: color 0.2s;
}

.footer-nav:hover {
  color: var(--phosphor);
}

/* ── EPHEMERON (daily featured piece on home page) ── */
.ephemeron-label {
  color: var(--slate-hi);
  text-shadow: 0 0 10px rgba(122,170,187,0.3);
}

.ephemeron-gutter {
  border-right: 1px solid var(--rule);
  padding: 16px 8px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.ephemeron-main {
  padding: 16px var(--col-gap);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ephemeron-title {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--phosphor-hi);
  text-decoration: none;
  line-height: 1.4;
  text-shadow: 0 0 16px rgba(184,240,208,0.15);
  transition: text-shadow 0.2s;
}

.ephemeron-title:hover {
  text-shadow: 0 0 20px rgba(184,240,208,0.35);
}

.ephemeron-subtitle {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.82rem;
  color: var(--phosphor-dim);
}

.ephemeron-hook {
  font-family: var(--font-body);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--phosphor-dim);
  margin: 6px 0 8px;
  font-weight: 300;
}

.ephemeron-hint {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  color: var(--slate);
  letter-spacing: 0.12em;
  margin-top: 4px;
}

.ephemeron-margin {
  border-left: 1px solid var(--rule);
  padding: 16px 14px;
  display: flex;
  align-items: flex-start;
}

.ephemeron-chain {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  color: var(--slate);
  letter-spacing: 0.06em;
}

/* ── PROVENANCE (machine-generation attribution) ── */
.provenance {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: var(--col-left) 1fr var(--col-margin);
  border-bottom: 1px solid var(--rule);
  background: var(--bg-inset);
}

.provenance-gutter {
  border-right: 1px solid var(--rule);
}

.provenance-body {
  padding: 10px 24px;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  line-height: 1.7;
  color: var(--slate);
  letter-spacing: 0.03em;
}

.provenance-body strong {
  color: var(--slate-hi);
  font-weight: 600;
}

.provenance-margin {
  border-left: 1px solid var(--rule);
}

/* ── INDEX (home page) ── */
.index-gutter {
  border-right: 1px solid var(--rule);
  padding: 14px 6px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.index-class {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  color: var(--amber-dim);
  writing-mode: vertical-rl;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.index-main {
  padding: 14px var(--col-gap);
  border-bottom: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.index-title {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--phosphor);
  text-decoration: none;
  line-height: 1.4;
  transition: color 0.2s, text-shadow 0.2s;
}

.index-title:hover {
  color: var(--phosphor-hi);
  text-shadow: 0 0 12px rgba(126,200,160,0.3);
}

.index-subtitle {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.78rem;
  color: var(--phosphor-dim);
  letter-spacing: 0.02em;
}

.index-margin {
  border-left: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 14px 14px;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--slate);
  letter-spacing: 0.08em;
  display: flex;
  align-items: flex-start;
}

/* ── COLOPHON ── */
.colophon-gutter {
  border-right: 1px solid var(--rule);
  padding: 16px 8px;
}

.colophon-main {
  padding: 16px var(--col-gap);
}

.colophon-link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--phosphor);
  text-decoration: none;
  transition: color 0.2s, text-shadow 0.2s;
}

.colophon-link:hover {
  color: var(--phosphor-hi);
  text-shadow: 0 0 12px rgba(126,200,160,0.3);
}

.colophon-margin {
  border-left: 1px solid var(--rule);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.colophon-social {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--slate);
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}

.colophon-social:hover {
  color: var(--slate-hi);
}

/* ── RESPONSA (comment section — below the document) ── */
.responsa {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0;
  position: relative;
}

.responsa-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 24px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: var(--bg-inset);
}

.responsa-header::before,
.responsa-header::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--rule-hi));
}
.responsa-header::after {
  background: linear-gradient(90deg, var(--rule-hi), transparent);
}

.responsa-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--slate);
  text-transform: uppercase;
  white-space: nowrap;
  flex-shrink: 0;
}

.responsa-body {
  padding: 24px 24px 32px;
  max-width: 680px;
  margin: 0 auto;
}

/* Override Giscus iframe to blend */
.giscus, .giscus-frame {
  width: 100%;
}

/* ════════════════════════════════════════════════════════════
   MOBILE LAYER — the portable breviary form
   Breakpoint: 700px and below
   ════════════════════════════════════════════════════════════ */

/* ── STICKY RUNNING HEADER (hidden on desktop) ── */
.mobile-nav {
  display: none;
}

@media (max-width: 700px) {

  /* Reset for mobile */
  html {
    font-size: 17px;
  }

  body {
    margin: 0;
    border-left: none;
    border-right: none;
  }

  /* ── STICKY RUNNING HEADER ── */
  .mobile-nav {
    display: flex;
    position: sticky;
    top: 0;
    z-index: 200;
    background: var(--bg-inset);
    border-bottom: 1px solid var(--rule-hi);
    align-items: center;
    gap: 0;
    height: 32px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.6);
  }

  .mobile-nav-sigil {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    color: var(--amber-dim);
    padding: 0 10px;
    border-right: 1px solid var(--rule);
    height: 100%;
    display: flex;
    align-items: center;
    letter-spacing: 0.08em;
    background: var(--bg-raised);
    white-space: nowrap;
    text-decoration: none;
  }

  .mobile-nav-location {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    color: var(--phosphor-dim);
    padding: 0 12px;
    flex: 1;
    letter-spacing: 0.06em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .mobile-nav-location .nav-section {
    color: var(--amber);
  }

  .mobile-nav-pip {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--phosphor-dim);
    margin-right: 12px;
    flex-shrink: 0;
    box-shadow: 0 0 4px rgba(126,200,160,0.3);
    transition: background 0.3s, box-shadow 0.3s;
  }

  /* ── COLLAPSE THREE-COLUMN GRID TO SINGLE COLUMN ── */
  .page {
    display: block;
  }

  /* Hide desktop gutter column entirely */
  .gutter-cell {
    display: none;
  }

  /* Hide desktop header gutter and margin panes */
  .header-gutter,
  .header-margin,
  .section-head-gutter,
  .section-head-margin,
  .footer-gutter,
  .footer-margin {
    display: none;
  }

  /* ── HEADER ── */
  .doc-header {
    border-bottom: 1px solid var(--rule-hi);
  }

  .header-inner {
    display: block;
  }

  .header-body {
    padding: 24px 20px 20px;
  }

  .doc-title {
    font-size: 0.68rem;
    letter-spacing: 0.2em;
  }

  .doc-subtitle {
    font-size: 0.82rem;
  }

  /* ── ORNAMENT BAND — survives, more intense at narrow width ── */
  .ornament-band {
    height: 36px;
  }

  /* ── PROVENANCE ── */
  .provenance {
    display: block;
  }

  .provenance-gutter,
  .provenance-margin {
    display: none;
  }

  .provenance-body {
    padding: 10px 20px;
  }

  /* ── SECTION HEADS ── */
  .section-head-row {
    display: block;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    margin-top: 0;
  }

  .section-head-body {
    padding: 8px 20px;
  }

  /* ── MAIN CONTENT CELL ── */
  .main-cell {
    padding: 20px 20px 8px;
  }

  /* ── DROP CAP — scaled down, same geometry ── */
  .dropcap-wrap {
    width: 52px;
    height: 52px;
    margin: 2px 12px 4px 0;
  }

  /* ── AXIOM BLOCK ── */
  .axiom {
    grid-template-columns: 44px 1fr;
    font-size: 0.88rem;
    padding: 6px 14px;
  }

  /* ── CODE BLOCK — collapse chrome, keep line numbers ── */
  .codex-chrome {
    display: none;
  }

  .codex-caption {
    font-size: 0.56rem;
    padding: 6px 10px;
    white-space: normal;
    line-height: 1.4;
  }

  .codex-lang {
    font-size: 0.56rem;
    padding: 6px 10px;
  }

  .codex-body {
    font-size: 0.74rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .cl-num {
    min-width: 32px;
    padding: 0 8px;
    font-size: 0.62rem;
    margin-right: 10px;
  }

  /* ── TABLE — card stack pattern ── */
  .construction-wrap {
    margin: 16px 0 20px;
  }

  table.construction thead {
    display: none;
  }

  table.construction,
  table.construction tbody,
  table.construction tr {
    display: block;
    width: 100%;
  }

  table.construction tr {
    border: 1px solid var(--rule);
    border-bottom: none;
    position: relative;
  }

  table.construction tr:first-child {
    border-top: none;
  }

  table.construction tr:last-child {
    border-bottom: 1px solid var(--rule);
  }

  table.construction td {
    display: block;
    padding: 5px 14px;
    border-bottom: none;
    border-right: none;
  }

  table.construction td:first-child {
    font-size: 0.9rem;
    padding: 8px 14px 4px;
    border-right: none;
    border-bottom: 1px solid var(--rule);
    display: flex;
    align-items: center;
    gap: 8px;
  }

  table.construction td:first-child::before {
    content: '▸';
    color: var(--amber-dim);
    font-size: 0.65rem;
  }

  table.construction td:not(:first-child)::before {
    content: attr(data-label);
    display: block;
    font-family: var(--font-mono);
    font-size: 0.55rem;
    color: var(--phosphor-dim);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 2px;
  }

  table.construction td:last-child {
    padding-bottom: 10px;
  }

  /* ── SECTION RULE ── */
  .section-rule {
    display: block;
    height: 1px;
    border-top: 1px solid var(--rule-hi);
    grid-template-columns: none;
  }

  .section-rule > * {
    display: none;
  }

  /* ── MARGIN NOTES — inline stage-whisper form ── */
  .margin-cell {
    display: block;
    border-left: none;
    border-top: 1px solid var(--rule);
    padding: 0;
    margin: 0 20px 16px;
    background: transparent;
  }

  .margin-note {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 8px 12px 8px 10px;
    margin-bottom: 0;
    border-left: 2px solid var(--rule-hi);
    background: var(--bg-inset);
    border-bottom: 1px solid var(--rule);
  }

  .margin-note:last-child {
    border-bottom: none;
  }

  .margin-cell .ref {
    font-size: 0.56rem;
    letter-spacing: 0.1em;
    color: var(--slate-hi);
    margin-bottom: 3px;
  }

  .margin-cell .ref::before {
    content: '◂ ';
    color: var(--amber-dim);
  }

  /* ── FOOTER ── */
  .doc-footer {
    display: block;
  }

  .footer-body {
    padding: 12px 20px;
    font-size: 0.56rem;
    flex-direction: column;
    gap: 4px;
    align-items: flex-start;
  }

  /* ── PROSE (single-column layout) ── */
  .prose-wrap {
    border-top: 1px solid var(--rule);
  }

  .prose {
    padding: 24px 20px;
  }

  /* ── INDEX (home page) ── */
  .index-gutter,
  .index-margin,
  .ephemeron-gutter,
  .ephemeron-margin,
  .colophon-gutter,
  .colophon-margin {
    display: none;
  }

  .index-main {
    padding: 12px 20px;
  }

  .ephemeron-main {
    padding: 14px 20px;
  }

  .colophon-main {
    padding: 14px 20px;
  }

  /* ── RESPONSA ── */
  .responsa-header {
    padding: 10px 20px;
  }

  .responsa-body {
    padding: 16px 20px 24px;
  }

} /* end @media (max-width: 700px) */

/* ── Fine-tuning: narrow phones (< 420px) ── */
@media (max-width: 420px) {
  .doc-title {
    letter-spacing: 0.12em;
  }

  .codex-body {
    font-size: 0.68rem;
  }

  .section-label {
    font-size: 0.58rem;
    letter-spacing: 0.12em;
  }

  .dropcap-wrap {
    width: 44px;
    height: 44px;
  }
}