/* =======================================================================
   The UMtts Institute - shared design system
   Advancing Coherence · Engineering Tomorrow
   ======================================================================= */

:root {
  /* palette - deep royal blues + marble neutrals + restrained silver */
  --ink:        #0a1a33;          /* deepest navy, body copy on light */
  --ink-soft:   #1a2d52;
  --royal:      #12326b;          /* primary royal blue */
  --royal-2:    #1e4a9e;          /* lighter royal for hover */
  --cobalt:     #2c5aa8;
  --lapis:      #0d2454;
  --silver:     #b8bec8;
  --silver-2:   #8a91a0;
  --vein:       #4a6fa5;          /* marble vein blue */

  --paper:      #f8f9fb;
  --paper-2:    #eef1f5;
  --panel:      rgba(246, 243, 235, 0.965);
  --panel-solid:#f6f3eb;
  --panel-edge: rgba(18, 50, 107, 0.22);
  --panel-shadow: 0 30px 80px -30px rgba(10, 26, 51, 0.45),
                  0 2px 10px -2px rgba(10, 26, 51, 0.2);

  --accent-gold: #8a7a3f;         /* subdued, not gaudy */
  --accent-rule: rgba(18, 50, 107, 0.35);

  /* typography */
  --f-display: 'Cinzel', 'Trajan Pro', 'Cormorant Garamond', serif;
  --f-serif:   'Cormorant Garamond', 'EB Garamond', Georgia, serif;
  --f-body:    'Cormorant Garamond', 'EB Garamond', Georgia, serif;
  --f-ui:      'Inter', 'Helvetica Neue', Arial, sans-serif;
  --f-mono:    'JetBrains Mono', 'Fira Code', ui-monospace, Menlo, monospace;

  /* scale */
  --shell-max: 1280px;
  --read-max:  820px;
}

/* ---------- reset-lite ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { max-width: 100%; display: block; }
button { font: inherit; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  /* font-family: var(--f-body); */
  font-family: 'Cambria Math', var(--f-serif);
  color: var(--ink);
  background-image: url('../images/blue_silver_marble_bg.png');
  background-size: cover;
  background-position: center top;
  background-attachment: fixed;
  background-repeat: no-repeat;
  background-color: var(--paper);
  min-height: 100vh;
  line-height: 1.55;
  font-size: 18px;
}

/* a translucent wash over the marble so long-form text stays readable */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: linear-gradient(180deg, rgba(245,241,232,0.10) 0%, rgba(245,241,232,0.25) 60%, rgba(235,229,214,0.35) 100%);
  pointer-events: none;
  z-index: 0;
}

main, header, footer { position: relative; z-index: 1; }

/* ---------- type ---------- */
h1, h2, h3, h4, h5, h6 { 
    /* font-family: var(--f-display); */
    font-family: 'Cambria Math', var(--f-serif);
    font-weight: 500;
    color: var(--lapis);
    letter-spacing: 0.02em;
    line-height: 1.15;
    text-wrap: balance; 
}
h1 { font-size: clamp(2.2rem, 4.2vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); }
h3 { font-size: clamp(1.25rem, 1.8vw, 1.55rem); }
h4 { font-size: 1.1rem; font-family: var(--f-ui); text-transform: uppercase; letter-spacing: 0.18em; color: var(--royal); }

p { text-wrap: pretty; }

a { color: var(--royal); text-decoration: none; border-bottom: 1px solid rgba(18,50,107,0.25); transition: color .15s, border-color .15s; }
a:hover { color: var(--royal-2); border-color: var(--royal-2); }

.eyebrow {
  font-family: var(--f-ui);
  font-size: 0.72rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--royal);
  font-weight: 500;
}

.rule {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-rule) 20%, var(--accent-rule) 80%, transparent);
  border: 0;
  margin: 2rem 0;
}

/* ---------- header / nav ---------- */
.site-header {
  backdrop-filter: blur(10px);
  background: rgba(245, 241, 232, 0.72);
  border-bottom: 1px solid rgba(18, 50, 107, 0.15);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header__inner {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0.9rem 2rem;
  display: flex;
  align-items: center;
  gap: 2.5rem;
}
.brand {
  font-family: 'Cambria Math', var(--f-serif);
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--lapis);
  border: 0;
  white-space: nowrap;
}
.brand small { display: block; font-family: var(--f-ui); font-size: 0.55rem; letter-spacing: 0.22em; color: var(--royal); font-weight: 400; margin-top: 2px; opacity: 0.78; }
.site-nav {
  display: flex;
  gap: 2rem;
  margin-left: auto;
  align-items: center;
}
.site-nav a {
  font-family: var(--f-ui);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--lapis);
  border: 0;
  padding: 0.4rem 0;
  position: relative;
}
.site-nav a::after {
  content: ''; position: absolute; left: 0; right: 100%; bottom: -2px;
  height: 1px; background: var(--royal); transition: right .25s;
}
.site-nav a:hover::after, .site-nav a.is-active::after { right: 0; }
.site-nav a.is-active { color: var(--royal); }

.btn-pill {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--lapis);
  border-radius: 999px;
  background: transparent;
  color: var(--lapis);
  font-family: var(--f-ui);
  font-size: 0.68rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background .2s, color .2s;
}
.btn-pill:hover { background: var(--lapis); color: var(--paper); }

/* ---------- panels (the signature marble glass cards) ---------- */
.panel {
  background: var(--panel);
  backdrop-filter: blur(14px);
  border: 1px solid var(--panel-edge);
  box-shadow: var(--panel-shadow);
  border-radius: 2px;
  position: relative;
}
.panel--bordered::before {
  content: '';
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(18,50,107,0.15);
  pointer-events: none;
  border-radius: 1px;
}

.shell {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ---------- hero ---------- */
.hero {
  padding: 6rem 2rem 5rem;
  min-height: calc(100vh - 64px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}
.hero__logo-wrap {
  max-width: 720px;
  width: 100%;
  margin: 0 auto 2.2rem;
}
.hero__logo {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 8px 28px rgba(10, 26, 51, 0.35));
}
.hero__plate {
  max-width: 760px;
  margin: 0 auto;
  padding: 2.4rem 3rem;
}
.hero__motto {
  font-family: var(--f-ui);
  font-size: 0.74rem;
  letter-spacing: 0.38em;
  text-transform: uppercase;
  color: var(--royal);
  margin: 0 0 1.2rem;
}
.hero__motto::before, .hero__motto::after { content: none !important; }
.hero__motto::after { content: none !important; }

.hero__line {
  font-family: 'Cambria Math', var(--f-serif);
  font-style: italic;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  color: var(--lapis);
  margin: 0 0 1.6rem;
  text-wrap: balance;
}

/* Mobile-first: Buttons stack vertically */
.hero__ctas {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin: 3rem auto 0;
  width: 100%;
  padding: 0 1.5rem;
  box-sizing: border-box;
}

.hero__ctas a.btn-solid,
.hero__ctas a.btn-ghost {
  width: 100%;
  box-sizing: border-box;
  
  /* Flexbox Centering */
  display: flex;
  justify-content: center; /* Horizontally center text */
  align-items: center;     /* Vertically center text */
  text-align: center;
  
  white-space: nowrap; 
  font-size: clamp(0.6rem, 3.5vw, 0.72rem);
  padding: 0 1rem; /* Uniform horizontal padding */
  min-height: 3rem; /* Optional: ensures a consistent height for all buttons */
}

/* Desktop: Buttons switch to side-by-side */
@media (min-width: 600px) {
  .hero__ctas {
    grid-template-columns: repeat(2, 240px);
    justify-content: center;
    padding: 0;
  }
  
  .hero__ctas a.btn-solid,
  .hero__ctas a.btn-ghost {
    width: auto;
    font-size: 0.72rem;
    padding: 0 1.6rem;
  }
}

.btn-solid, .btn-ghost {
  display: inline-flex; align-items: center; gap: .6rem;
  padding: 0.9rem 1.6rem;
  font-family: var(--f-ui);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  border-radius: 2px;
  cursor: pointer;
  transition: transform .15s, background .2s, color .2s, box-shadow .2s;
  border: 1px solid var(--lapis);
}
.btn-solid {
  background: var(--lapis);
  color: var(--paper);
  box-shadow: 0 4px 18px -6px rgba(10,26,51,0.6);
}
.btn-solid:hover { background: var(--royal-2); border-color: var(--royal-2); transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: #1a2d52;
}
.btn-ghost:hover { background: var(--lapis); color: var(--paper); }

/* ---------- section scaffolding ---------- */
.section { padding: 6rem 0; position: relative; }
.section--tight { padding: 3rem 0; }
.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3rem;
}
.section-head .eyebrow { display: block; margin-bottom: 1rem; }
.section-head h2 { margin: 0 0 0.8rem; }
.section-head p { font-family: 'Cambria Math', var(--f-serif); font-size: 1.2rem; color: var(--ink-soft); font-style: italic; margin: 0; }

/* ---------- pillars grid (landing) ---------- */
.pillars {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.pillar {
  padding: 2rem 1.8rem 2.2rem;
}
.pillar__glyph {
  width: 48px; height: 48px;
  margin-bottom: 1rem;
  color: var(--royal);
}
.pillar h3 {
  font-family: 'Cambria Math', var(--f-serif);
  font-size: 1.3rem;
  margin: 0 0 0.6rem;
  color: var(--lapis);
}
.pillar__n {
  font-family: var(--f-ui);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--royal);
  display: block;
  margin-bottom: 0.4rem;
}
.pillar p { margin: 0; font-size: 1rem; color: var(--ink-soft); line-height: 1.55; }

/* ---------- MFE spotlight ---------- */
.mfe {
  padding: 3rem 2.4rem;
  text-align: center;
}
.mfe__eq {
  font-family: 'Cambria Math', var(--f-serif);
  font-size: clamp(1.4rem, 3.2vw, 2.4rem);
  letter-spacing: 0.01em;
  color: var(--lapis);
  margin: 1.2rem 0;
  font-style: normal;
}
.mfe__legend {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 1.8rem;
  font-family: var(--f-ui); font-size: 0.72rem; color: var(--ink-soft);
  letter-spacing: 0.12em; text-transform: uppercase;
  margin-top: 1.6rem;
}
.mfe__legend span strong { color: var(--royal); font-weight: 600; }

/* ---------- publication row ---------- */
.pubs { display: grid; gap: 1.5rem; grid-template-columns: 1fr 1fr; }


.pub {
  padding: 2rem 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.pub__kicker { font-family: var(--f-ui); font-size: 0.68rem; letter-spacing: 0.28em; text-transform: uppercase; color: var(--royal); }
.pub h3 { margin: 0; font-size: 1.5rem; color: var(--lapis); }
.pub__meta { font-family: var(--f-ui); font-size: 0.75rem; color: var(--ink-soft); letter-spacing: 0.05em; }
.pub__meta code { font-family: var(--f-mono); background: rgba(18,50,107,0.08); padding: 2px 8px; border-radius: 2px; color: var(--lapis); }
.pub p { margin: 0; color: var(--ink-soft); font-size: 1rem; }
.pub__actions { margin-top: auto; display: flex; gap: 0.6rem; flex-wrap: wrap; }

/* ---------- DOI callout ---------- */
.doi-callout {
  padding: 1.4rem 1.8rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin: 1rem 0;
}
.doi-callout__label { font-family: var(--f-ui); font-size: 0.68rem; letter-spacing: 0.28em; text-transform: uppercase; color: var(--royal); }
.doi-callout__link { font-family: var(--f-mono); font-size: 0.95rem; color: var(--lapis); }

/* ---------- footer ---------- */
.site-footer {
  margin-top: 5rem;
  padding: 3.5rem 2rem 2.5rem;
  background: linear-gradient(180deg, rgba(10,26,51,0) 0%, rgba(10,26,51,0.92) 60%, #0a1a33 100%);
  color: #c9d2e0;
  font-size: 0.92rem;
}
.site-footer__inner {
  max-width: var(--shell-max);
  margin: 0 auto;
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 2fr 1fr 1fr 1fr;
}


.site-footer h5 { font-family: var(--f-ui); font-size: 0.68rem; letter-spacing: 0.28em; text-transform: uppercase; color: #c9d2e0; margin: 0 0 1rem; font-weight: 500; }
.site-footer a { color: #c9d2e0; border: 0; display: block; padding: 0.25rem 0; font-family: var(--f-ui); font-size: 0.85rem; }
.site-footer a:hover { color: #fff; }
.site-footer__mark {
  font-family: 'Cambria Math', var(--f-serif);
  font-size: 0.95rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 0.6rem;
}
.site-footer__motto {
  font-family: var(--f-ui);
  font-size: 0.65rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: #8ea2c7;
}
.site-footer__bottom {
  max-width: var(--shell-max);
  margin: 2.5rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  font-family: var(--f-ui); font-size: 0.72rem; letter-spacing: 0.12em; color: #8ea2c7;
}

/* ---------- long-form reading (monograph & tvp pages) ---------- */
.doc-shell { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 3rem; max-width: 1360px; margin: 0 auto; padding: 3rem 2rem 6rem; }


.doc-toc {
  position: sticky;
  top: 90px;
  align-self: start;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  padding: 1.5rem 1.4rem;
  font-family: var(--f-ui);
  font-size: 0.8rem;
}
.doc-toc h5 {
  font-family: var(--f-ui);
  font-size: 0.66rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--royal);
  margin: 0 0 0.8rem;
  font-weight: 500;
}
.doc-toc ol { list-style: none; padding: 0; margin: 0; }
.doc-toc a {
  display: block;
  padding: 0.35rem 0.5rem;
  color: var(--ink-soft);
  border: 0;
  border-left: 2px solid transparent;
  line-height: 1.35;
  font-size: 0.82rem;
  transition: background .15s, border-color .15s, color .15s;
}
.doc-toc a:hover { color: var(--royal); background: rgba(18,50,107,0.05); border-left-color: var(--royal); }
.doc-toc a.is-current { color: var(--royal); border-left-color: var(--royal); background: rgba(18,50,107,0.06); font-weight: 600; }
.doc-toc li.lvl-3 a { padding-left: 1.4rem; font-size: 0.78rem; color: var(--silver-2); }

.doc-body {
  padding: 3rem clamp(1.5rem, 4vw, 4rem);
  font-family: 'Cambria Math', var(--f-serif);
  font-size: 1.12rem;
  line-height: 1.68;
  color: var(--ink);
}
.doc-body .doc-header {
  text-align: center;
  padding-bottom: 2.5rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--accent-rule);
}
.doc-body .doc-header .eyebrow { display: block; margin-bottom: 0.8rem; }
.doc-body .doc-header h1 { margin: 0 0 0.6rem; font-size: clamp(2rem, 3.6vw, 3rem); }
.doc-body .doc-header .doc-subtitle { font-family: 'Cambria Math', var(--f-serif); font-style: italic; font-size: 1.2rem; color: var(--ink-soft); margin: 0; }
.doc-body .doc-header .doc-meta { display: flex; justify-content: center; gap: 2rem; flex-wrap: wrap; margin-top: 1.5rem; font-family: var(--f-ui); font-size: 0.75rem; letter-spacing: 0.1em; color: var(--ink-soft); }
.doc-body .doc-header .doc-meta strong { color: var(--royal); font-weight: 600; text-transform: uppercase; letter-spacing: 0.2em; font-size: 0.68rem; display: block; margin-bottom: 2px; }

.doc-body h1, .doc-body h2 {
  font-family: 'Cambria Math', var(--f-serif);
  color: var(--lapis);
  margin: 3rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(18,50,107,0.18);
}
.doc-body h2 { font-size: 1.8rem; }
.doc-body h3 {
  font-family: 'Cambria Math', var(--f-serif);
  color: var(--royal);
  font-size: 1.35rem;
  margin: 2.4rem 0 0.8rem;
}
.doc-body h4 {
  font-family: var(--f-ui);
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--royal);
  margin: 1.8rem 0 0.6rem;
}
.doc-body p { margin: 0 0 1.1rem; max-width: 78ch; }
.doc-body ul, .doc-body ol { padding-left: 1.4rem; margin: 0 0 1.1rem; max-width: 78ch; }
.doc-body li { margin-bottom: 0.4rem; }

.doc-body blockquote {
  margin: 1.8rem 0;
  padding: 1.2rem 1.8rem;
  border-left: 3px solid var(--royal);
  background: rgba(18,50,107,0.05);
  font-style: italic;
  color: var(--ink-soft);
}

.doc-body code, .doc-body .eq {
  font-family: 'Cambria Math', var(--f-serif);
  font-style: normal;
  background: rgba(18,50,107,0.06);
  padding: 1px 5px;
  border-radius: 2px;
  font-size: 0.98em;
  color: var(--lapis);
}

.doc-body .equation {
  display: block;
  margin: 1.4rem auto;
  padding: 1rem 1.6rem;
  font-family: 'Cambria Math', var(--f-serif);
  font-style: normal;
  font-size: 1.15rem;
  color: var(--lapis);
  background: rgba(18,50,107,0.05);
  border-left: 3px solid var(--royal);
  border-radius: 2px;
  text-align: center;
  max-width: 78ch;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.doc-body table {
  border-collapse: collapse;
  margin: 1.5rem 0;
  width: 100%;
  max-width: 78ch;
  font-family: var(--f-ui);
  font-size: 0.88rem;
}
.doc-body table th, .doc-body table td {
  padding: 0.6rem 0.9rem;
  border-bottom: 1px solid rgba(18,50,107,0.15);
  text-align: left;
  vertical-align: top;
}
.doc-body table th {
  background: rgba(18,50,107,0.08);
  color: var(--lapis);
  font-weight: 600;
  font-family: var(--f-ui);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.doc-body hr { border: 0; height: 1px; background: var(--accent-rule); margin: 3rem 0; }

.doc-body .callout {
  margin: 2rem 0;
  padding: 1.4rem 1.8rem;
  border: 1px solid rgba(18,50,107,0.22);
  background: rgba(245,241,232,0.75);
  border-left: 4px solid var(--royal);
  border-radius: 2px;
}
.doc-body .callout--stop { border-left-color: #8a2f2f; background: rgba(138,47,47,0.04); }
.doc-body .callout--stop h4 { color: #8a2f2f; }

.doc-body .doc-footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--accent-rule);
  text-align: center;
  font-family: var(--f-ui);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--royal);
  text-transform: uppercase;
}

/* ---------- forms (community page) ---------- */
.form-row { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1.2rem; }
.form-row label { font-family: var(--f-ui); font-size: 0.7rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--royal); }
.form-row input, .form-row textarea, .form-row select {
  font: inherit;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--panel-edge);
  padding: 0.8rem 1rem;
  color: var(--ink);
  border-radius: 2px;
  font-family: 'Cambria Math', var(--f-serif);
  font-size: 1.05rem;
  transition: border-color .15s, background .15s;
}
.form-row input:focus, .form-row textarea:focus { outline: none; border-color: var(--royal); background: #fff; }

/* ---------- utilities ---------- */
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mt-4 { margin-top: 4rem; }
.mb-2 { margin-bottom: 2rem; }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* ---------- print-friendly monograph ---------- */
@media print {
  body { background: #fff; color: #000; }
  body::before { display: none; }
  .site-header, .site-footer, .doc-toc, .btn-pill, .btn-solid, .btn-ghost { display: none !important; }
  .panel { background: #fff; box-shadow: none; border: 0; }
  .doc-shell { grid-template-columns: 1fr; }
  .doc-body { padding: 0; font-size: 11pt; }
  .doc-body h1, .doc-body h2, .doc-body h3 { page-break-after: avoid; }
  .doc-body .equation, .doc-body .callout, .doc-body table { page-break-inside: avoid; }
}


/* =======================================================================
   Frosted readability layer
   Adds gray-blue frosted glass beneath naked text sections only.
   It improves clarity without mutating canonical source content.
   ======================================================================= */

.frosted-glass {
  background:
    linear-gradient(135deg, rgba(38, 55, 76, 0.58), rgba(24, 40, 61, 0.50));
  border: 1px solid rgba(219, 229, 239, 0.24);
  box-shadow:
    0 18px 54px -30px rgba(5, 18, 35, 0.72),
    inset 0 1px 0 rgba(255, 255, 255, 0.24);
  backdrop-filter: blur(27px) saturate(112%);
  -webkit-backdrop-filter: blur(7px) saturate(112%);
  border-radius: 18px;
}

.section-head.frosted-glass {
  padding: 1.15rem clamp(1rem, 2.4vw, 1.55rem);
  margin-bottom: 2.35rem;
}

.frosted-glass--center {
  padding-top: 1.45rem;
  padding-bottom: 1.45rem;
}

.section-head.frosted-glass h1,
.section-head.frosted-glass h2,
.frosted-glass--center h1,
.frosted-glass--center h2 {
  color: #eef5fb;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.30);
}

.section-head.frosted-glass p,
.frosted-glass--center p,
.frosted-glass--center blockquote {
  color: #dbe7f0 !important;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.26);
}

.section-head.frosted-glass .eyebrow,
.frosted-glass--center .eyebrow {
  color: #d7c98f;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.28);
}

.frosted-glass--center blockquote {
  margin-left: auto !important;
  margin-right: auto !important;
}


/* =======================================================================
   Ledger surface components
   ======================================================================= */

.ledger-card {
  padding: 2rem 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ledger-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
}

.ledger-file-group {
  padding: 1.4rem 1.6rem;
}

.ledger-file-group h3 {
  margin: 0 0 1rem;
  color: var(--lapis);
  font-family: 'Cambria Math', var(--f-serif);
}

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

.ledger-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--f-ui);
  font-size: .86rem;
}

.ledger-table th {
  text-align: left;
  padding: .72rem .65rem;
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--royal);
  border-bottom: 2px solid var(--royal);
  white-space: nowrap;
}

.ledger-table td {
  padding: .72rem .65rem;
  border-bottom: 1px solid rgba(18,50,107,.12);
  color: var(--ink-soft);
  vertical-align: top;
}

.ledger-table td:first-child {
  color: var(--lapis);
  font-family: var(--f-mono);
  font-size: .78rem;
}

.record-body p {
  margin: 0 0 1rem;
}

.record-body h1,
.record-body h2,
.record-body h3 {
  scroll-margin-top: 110px;
}

.record-body ul {
  margin: 0 0 1rem 1.2rem;
  padding: 0;
}

.record-body li {
  margin: .4rem 0;
}


/* =======================================================================
   All-inclusive layout correction
   Fixes right-shift/header clipping and gives the document pages more room.
   ======================================================================= */

:root {
  --shell-max: 1520px;
}

.site-header__inner {
  width: min(100% - 2rem, 1680px);
  max-width: none;
  padding: 0.78rem 1rem;
  gap: clamp(1rem, 2vw, 2rem);
}

.brand {
  flex: 0 1 440px;
  min-width: 260px;
  white-space: normal;
  letter-spacing: clamp(0.16em, 0.8vw, 0.28em);
  line-height: 1.25;
}

.brand small {
  letter-spacing: clamp(0.12em, 0.55vw, 0.20em);
}

.site-nav {
  flex: 1 1 auto;
  min-width: 0;
  margin-left: 0;
  justify-content: flex-end;
  gap: clamp(0.85rem, 1.55vw, 1.55rem);
}

.site-nav a {
  font-size: clamp(0.64rem, 0.62vw, 0.72rem);
  letter-spacing: clamp(0.12em, 0.72vw, 0.21em);
  white-space: nowrap;
}

.site-header .btn-pill {
  display: none;
}

.doc-shell {
  width: min(100% - 2rem, 1660px);
  max-width: none;
  grid-template-columns: minmax(210px, 260px) minmax(0, 1fr);
  gap: clamp(1.2rem, 2.2vw, 2.3rem);
  padding: 2.25rem 1rem 5rem;
}

.doc-body {
  min-width: 0;
  padding: 2.4rem clamp(1.25rem, 3vw, 3.2rem);
}

.doc-toc {
  min-width: 0;
  padding: 1.25rem 1rem;
}

.doc-toc a {
  overflow-wrap: anywhere;
}


/* =======================================================================
   Wide text/layout pass
   Wider left content nav, wider Mass Harmonics content body, nav shifted left.
   This changes layout only; canonical text/equations are untouched.
   ======================================================================= */

:root {
  --shell-max: 1680px;
  --read-max: 1280px;
}

.site-header__inner {
  width: min(100% - 1rem, 1920px);
  max-width: none;
  margin-left: 0;
  margin-right: auto;
  padding-left: clamp(0.75rem, 1.1vw, 1.35rem);
  padding-right: clamp(0.75rem, 1.1vw, 1.35rem);
  justify-content: flex-start;
  gap: clamp(0.7rem, 1.15vw, 1.4rem);
}

.brand {
  flex: 0 0 clamp(300px, 23vw, 430px);
  min-width: 280px;
  max-width: 430px;
  white-space: normal;
  text-align: left;
  letter-spacing: clamp(0.14em, 0.7vw, 0.26em);
  line-height: 1.25;
}

.brand small {
  letter-spacing: clamp(0.10em, 0.48vw, 0.18em);
}

.site-nav {
  flex: 0 1 auto;
  min-width: 0;
  margin-left: clamp(0.15rem, 0.55vw, 0.75rem);
  margin-right: auto;
  justify-content: flex-start;
  text-align: left;
  gap: clamp(0.62rem, 1.05vw, 1.15rem);
}

.site-nav a {
  text-align: left;
  white-space: nowrap;
  font-size: clamp(0.61rem, 0.56vw, 0.70rem);
  letter-spacing: clamp(0.09em, 0.52vw, 0.16em);
}

.site-header .btn-pill {
  display: none;
}

.doc-shell {
  width: min(100% - 1rem, 1880px);
  max-width: none;
  grid-template-columns: minmax(360px, 430px) minmax(0, 1fr);
  gap: clamp(1rem, 1.35vw, 1.7rem);
  padding: 2rem 0.5rem 5rem;
}

.doc-toc {
  min-width: 0;
  padding: 1.35rem 1.35rem;
}

.doc-toc a {
  font-size: 0.88rem;
  line-height: 1.44;
  overflow-wrap: normal;
  word-break: normal;
}

.doc-body {
  max-width: none;
  min-width: 0;
  padding-left: clamp(2rem, 3.4vw, 4.6rem);
  padding-right: clamp(2rem, 3.4vw, 4.6rem);
}

.doc-body p,
.doc-body li,
.doc-body blockquote,
.doc-body .doc-subtitle {
  max-width: none;
}

.doc-body h1,
.doc-body h2,
.doc-body h3,
.doc-body h4 {
  max-width: none;
}

.doc-body table {
  width: 100%;
}

.doc-body pre,
.doc-body code {
  max-width: 100%;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.section-head {
  max-width: 980px;
}

.section-head p {
  max-width: 82ch;
}

.table-scroll {
  width: 100%;
}


/* =======================================================================
   White-panel opacity refinement
   Higher-opacity white div surfaces so internal boxed/equation sections
   stand out against the marble field with cleaner contrast.
   ======================================================================= */

.panel,
.doc-body,
.doc-toc,
.doi-callout,
.pub,
.ledger-card,
.ledger-file-group,
.hero__plate,
.mfe {
  background: rgba(246, 243, 235, 0.965);
}

.panel--bordered::before {
  border-color: rgba(18, 50, 107, 0.18);
}

.doc-body blockquote,
.doc-body .equation {
  background: rgba(18, 50, 107, 0.068);
  border-left-color: var(--royal);
}

.doc-body code,
.doc-body .eq,
.pub__meta code {
  background: rgba(18, 50, 107, 0.088);
}

.doc-body .callout {
  background: rgba(246, 243, 235, 0.80);
  border-color: rgba(18, 50, 107, 0.26);
}

.doc-body table th {
  background: rgba(18, 50, 107, 0.10);
}

.doc-body table td {
  background: rgba(255, 255, 255, 0.26);
}

.mfe,
.hero__plate,
.doi-callout {
  background: rgba(246, 243, 235, 0.965) !important;
}

@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .panel,
  .doc-body,
  .doc-toc,
  .doi-callout,
  .pub,
  .ledger-card,
  .ledger-file-group,
  .hero__plate,
  .mfe {
    backdrop-filter: blur(16px) saturate(108%);
    -webkit-backdrop-filter: blur(16px) saturate(108%);
  }
}


/* =======================================================================
   Site-wide white-surface match
   Matches the white div/panel surfaces to the screenshot treatment:
   rgb(255 255 255 / 90%) throughout the site, including the top navbar.
   ======================================================================= */

:root {
  --panel: rgba(255, 255, 255, 0.70);
  --panel-solid: rgba(255, 255, 255, 0.90);
}

.site-header,
.panel,
.doc-body,
.doc-toc,
.doi-callout,
.pub,
.ledger-card,
.ledger-file-group,
.hero__plate,
.mfe,
.doc-body .callout {
  background: rgba(255, 255, 255, 0.80) !important;
}

.site-header {
  backdrop-filter: blur(16px) saturate(108%);
  -webkit-backdrop-filter: blur(16px) saturate(108%);
  border-bottom: 1px solid rgba(18, 50, 107, 0.18);
  box-shadow: 0 10px 38px -30px rgba(10, 26, 51, 0.55);
}

.site-header__inner {
  background: transparent;
}

/* Keep the internal emphasis boxes distinct against the white panels. */
.doc-body blockquote,
.doc-body .equation {
  background: rgba(18, 50, 107, 0.068);
  border-left-color: var(--royal);
}

.doc-body code,
.doc-body .eq,
.pub__meta code {
  background: rgba(18, 50, 107, 0.088);
}

.doc-body table th {
  background: rgba(18, 50, 107, 0.10);
}

.doc-body table td {
  background: rgba(255, 255, 255, 0.26);
}


/* =======================================================================
   Homepage P3GG section refinement
   Replaces the tall five-card wall with compact ledger rows.
   Keeps the section as a source index, not a promotional claim layer.
   ======================================================================= */

#pillars.section {
  padding-top: 4.25rem;
  padding-bottom: 4.25rem;
}

#pillars .section-head {
  max-width: 900px;
  margin-bottom: 1.7rem;
}

#pillars .section-head.frosted-glass {
  padding: 1.05rem 1.35rem;
}

#pillars .section-head p {
  max-width: 72ch;
  font-size: 1.04rem;
  line-height: 1.46;
}

.pillars--ledger {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.72rem;
}

.pillars--ledger .pillar {
  display: grid;
  grid-template-columns: minmax(190px, 0.75fr) minmax(210px, 0.85fr) minmax(0, 1.55fr);
  align-items: baseline;
  gap: 1rem;
  padding: 1.02rem 1.28rem;
  min-height: 0;
}

.pillars--ledger .pillar__n {
  margin: 0;
  font-size: 0.64rem;
  line-height: 1.35;
  letter-spacing: 0.18em;
}

.pillars--ledger .pillar h3 {
  margin: 0;
  font-size: clamp(1.05rem, 1.45vw, 1.34rem);
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.pillars--ledger .pillar p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.42;
  max-width: none;
}


/* =======================================================================
   Header / hero wrapping correction
   Keep Institute + motto text on fewer lines and remove decorative dash wrapping.
   ======================================================================= */

.site-header__inner {
  width: min(100% - 1rem, 1920px);
  margin-left: auto;
  margin-right: auto;
  gap: clamp(0.65rem, 1vw, 1.15rem);
}

.brand {
  flex: 0 0 clamp(520px, 36vw, 690px);
  max-width: 690px;
  min-width: 480px;
  white-space: nowrap;
  letter-spacing: clamp(0.18em, 0.55vw, 0.26em);
}

.brand small {
  white-space: nowrap;
  letter-spacing: clamp(0.10em, 0.34vw, 0.16em);
  font-size: clamp(0.50rem, 0.45vw, 0.58rem);
}

.site-nav {
  flex: 1 1 auto;
  justify-content: flex-start;
  gap: clamp(0.58rem, 0.95vw, 1.05rem);
}

.site-nav a {
  font-size: clamp(0.60rem, 0.54vw, 0.68rem);
  letter-spacing: clamp(0.08em, 0.46vw, 0.14em);
}

.hero__logo-wrap {
  max-width: min(960px, 86vw);
}

.hero__plate {
  max-width: min(1040px, 86vw);
  padding-left: clamp(1.6rem, 4vw, 4.2rem);
  padding-right: clamp(1.6rem, 4vw, 4.2rem);
}

.hero__motto {
  white-space: nowrap;
  letter-spacing: clamp(0.14em, 0.55vw, 0.24em);
  font-size: clamp(0.58rem, 0.9vw, 0.76rem);
}

.hero__motto::before, .hero__motto::after { content: none !important; }

.hero__line {
  max-width: 24ch;
  margin-left: auto;
  margin-right: auto;
}


/* =======================================================================
   Final MFE, motto, and visitor counter pass
   ======================================================================= */

/* No decorative dash wrappers around the Institute motto. */
.hero__motto::before,
.hero__motto::after {
  content: none !important;
}

.brand small,
.hero__motto,
.site-footer__motto,
.footer__tagline {
  white-space: nowrap;
}

/* The homepage MFE must stay legible without giant broken browser wrapping. */
.mfe {
  max-width: min(1160px, calc(100vw - 3rem));
  margin-left: auto;
  margin-right: auto;
  padding: clamp(1.2rem, 2vw, 1.85rem);
}

.mfe__eq {
  font-family: 'Cambria Math', var(--f-serif);
  font-size: clamp(1.5rem, 2.6vw, 2.7rem);
  line-height: 1.18;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
  overflow-wrap: normal;
  word-break: keep-all;
}

.mfe__equation {
  display: block;
  max-width: 100%;
  margin: 0 auto 1.4rem;
  color: var(--lapis);
  font-family: 'Cambria Math', var(--f-serif);
  font-size: clamp(1.5rem, 2.7vw, 2.85rem);
  line-height: 1.18;
  letter-spacing: -0.012em;
  text-align: center;
}

.mfe__line {
  display: block;
  white-space: nowrap;
}

.mfe__line + .mfe__line {
  font-family: 'Cambria Math', var(--f-serif);
  margin-top: 0.12em;
}

.mfe p,
.mfe .mfe__note {
  max-width: 54ch;
  margin-left: auto;
  margin-right: auto;
}

.mfe__legend {
  font-family: 'Cambria Math', var(--f-serif);
  gap: 0.9rem 1.35rem;
}

/* Site-wide visitor counter display. */
.umtts-counter {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.25rem;
  align-items: center;
  justify-content: center;
  color: #c9d2e0;
  font-family: var(--f-ui);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.umtts-counter span {
  white-space: nowrap;
}

.umtts-counter--offline {
  opacity: 0.75;
}


/* =======================================================================
   Mobile scroll repair
   Prevents long document pages from jumping back to the top on phones.
   The TOC highlighter must never call page-level scroll behavior.
   ======================================================================= */


/* =======================================================================
   MFE single-line lock
   The homepage MFE is a single canonical display string. No forced split,
   no separated line spans, no visual line break inside the equation.
   ======================================================================= */

.mfe {
  max-width: min(1320px, calc(100vw - 3rem));
  margin-left: auto;
  margin-right: auto;
  padding: clamp(1.15rem, 1.8vw, 1.75rem);
}

.mfe__equation,
.mfe__eq {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 0 auto 1.35rem;
  color: var(--lapis);
  font-family: 'Cambria Math', var(--f-serif);
  font-size: clamp(1.15rem, 3.05vw, 3.35rem);
  line-height: 1.08;
  letter-spacing: -0.018em;
  text-align: center;
  white-space: nowrap;
  overflow-wrap: normal;
  word-break: keep-all;
  hyphens: none;
}

.mfe__line {
  display: inline !important;
  white-space: nowrap !important;
  margin: 0 !important;
}

.mfe__line + .mfe__line::before {
  content: "";
}


/* =======================================================================
   MFE single-line fit repair
   The equation remains one canonical display string. It must fit inside
   the white panel instead of overflowing or wrapping.
   ======================================================================= */

.mfe {
  max-width: min(1500px, calc(100vw - 3rem));
  overflow: hidden;
}

.mfe__equation,
.mfe__eq {
  display: block;
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  margin: 0 auto 1.25rem;
  padding: 0 0.25rem;
  color: var(--lapis);
  font-family: 'Cambria Math', 'STIX Two Math', var(--f-serif);
  font-size: clamp(1.05rem, 2.15vw, 2.45rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
  text-align: center;
  white-space: nowrap !important;
  overflow: visible;
  overflow-wrap: normal !important;
  word-break: keep-all !important;
  hyphens: none !important;
}

/* =======================================================================
   CONSOLIDATED RESPONSIVE SYSTEM
   All scattered mobile/tablet media rules have been moved here.
   Background behavior is handled once, without transform stacking or repeats.
   ======================================================================= */

@media (min-width: 1500px) {
.doc-body {
    font-size: 1.16rem;
  }
}

@media (max-width: 1360px) {
.brand {
    flex-basis: clamp(260px, 26vw, 360px);
  }

  .site-nav {
    gap: clamp(0.48rem, .85vw, .9rem);
  }

  .site-nav a {
    font-size: 0.62rem;
    letter-spacing: 0.09em;
  }

  .doc-shell {
    grid-template-columns: minmax(310px, 360px) minmax(0, 1fr);
  }
}

@media (max-width: 1220px) {
.brand {
    flex-basis: clamp(430px, 41vw, 560px);
    min-width: 390px;
  }

  .site-nav {
    gap: clamp(0.45rem, 0.75vw, 0.75rem);
  }

  .site-nav a {
    font-size: 0.58rem;
    letter-spacing: 0.075em;
  }
}

@media (max-width: 1180px) {
.site-header__inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .brand {
    flex-basis: auto;
  }

  .site-nav {
    justify-content: flex-start;
  }
}

@media (min-width: 981px) {
  body::before {
    background: none !important;
  }
}

@media (max-width: 980px) {
  /* Mobile browser UI changes height while scrolling.
     Use a pre-rotated mobile image and pin it to the large viewport height. */

  html {
    scroll-behavior: auto;
    background-color: var(--paper) !important;
  }

  html,
  body {
    min-height: 100%;
    overflow-x: hidden;
  }

  body {
    background-image: none !important;
    background-color: var(--paper) !important;
    background-attachment: scroll !important;
    overflow-y: auto;
  }

  body::before {
    content: '' !important;
    position: fixed !important;
    inset: 0 !important;
    width: 100vw !important;
    height: 100lvh !important;
    margin: 0 !important;
    padding: 0 !important;
    pointer-events: none !important;
    z-index: 0 !important;
    transform: none !important;
    filter: none !important;
    will-change: auto !important;

    background-image: url('../images/blue_silver_marble_bg_mobile.png') !important;
    background-size: 100vw 100lvh !important;
    background-position: center center !important;
    background-repeat: no-repeat !important;
    background-color: transparent !important;
  }

  main,
  header,
  footer {
    position: relative;
    z-index: 1;
  }

.doc-shell { grid-template-columns: 1fr; }

.doc-shell {
    width: min(100% - 1rem, 100%);
    grid-template-columns: 1fr;
    padding: 1rem .5rem 4rem;
  }

  .doc-toc {
    position: relative;
    top: auto;
    max-height: 260px;
  }

.site-header__inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .brand {
    flex-basis: auto;
  }

  .site-nav {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .doc-shell {
    width: min(100% - 1rem, 100%);
    grid-template-columns: 1fr;
    padding: 1rem 0.5rem 4rem;
  }

  .doc-toc {
    position: relative;
    top: auto;
    max-height: 320px;
  }

  .doc-body {
    padding-left: 1.1rem;
    padding-right: 1.1rem;
  }

.site-header__inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .brand {
    flex-basis: auto;
    min-width: 0;
    max-width: 100%;
  }

  .brand small,
  .hero__motto {
    white-space: normal;
  }

  .site-nav {
    flex-wrap: wrap;
  }

html {
    scroll-behavior: auto;
  }

  body {
    background-attachment: scroll;
    min-height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
  }

  body::before {
    position: fixed;
  }

  .doc-shell,
  .doc-body,
  .doc-toc {
    overflow: visible;
  }

  .doc-toc {
    position: relative !important;
    top: auto !important;
    max-height: none !important;
  }

.mfe {
    max-width: calc(100vw - 1rem);
    padding-left: 0.65rem;
    padding-right: 0.65rem;
  }

  .mfe__equation,
  .mfe__eq {
    font-size: clamp(0.72rem, 3.35vw, 1.32rem);
    letter-spacing: -0.03em;
    white-space: nowrap;
  }

.mfe {
    max-width: calc(100vw - 1rem);
  }

  .mfe__equation,
  .mfe__eq {
    font-size: clamp(0.58rem, 2.8vw, 1.25rem);
    letter-spacing: -0.045em;
  }
}

@media (max-width: 920px) {
.brand small,
  .hero__motto,
  .site-footer__motto,
  .footer__tagline {
    white-space: normal;
  }

  .mfe {
    max-width: calc(100vw - 1.2rem);
    padding-left: 0.85rem;
    padding-right: 0.85rem;
  }

  .mfe__eq,
  .mfe__equation {
    font-size: clamp(1.15rem, 4.5vw, 2rem);
  }

  .mfe__line {
    white-space: nowrap !important;
  }
}

@media (max-width: 900px) {
  table, thead, tbody, th, td, tr {
    display: block;
  }
  thead tr {
    position: absolute;
    top: -9999px;
    left: -9999px;
  }
  td {
    border: none;
    position: relative;
    padding-left: 50%;
  }    
    
.pillars--ledger .pillar {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .pillars--ledger .pillar h3 {
    font-size: 1.25rem;
  }
}

@media (max-width: 860px) {
.site-footer__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
.pubs { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
.ledger-card,
  .ledger-file-group {
    padding: 1.2rem 1rem;
  }

  .ledger-table {
    font-size: .8rem;
  }
}

@media (max-width: 720px) {
.section-head.frosted-glass {
    margin-left: 0.75rem;
    margin-right: 0.75rem;
    padding: 1rem;
  }

  .frosted-glass--center {
    margin-left: 0.75rem !important;
    margin-right: 0.75rem !important;
    padding-left: 1rem !important;
    padding-right: 1rem !important;
  }
}

@media (max-width: 620px) {
.brand,
  .brand small {
    white-space: normal;
  }

  .hero__plate {
    max-width: calc(100vw - 1.5rem);
  }

  .hero__motto {
    white-space: normal;
    letter-spacing: 0.12em;
  }
}

@media (max-width: 420px) {
.mfe__equation,
  .mfe__eq {
    font-size: clamp(0.58rem, 3.05vw, 0.95rem);
  }
}