/* ==============================================================
   Metal Powder Supply — Defense-Industrial Redesign v2
   Monochrome, dense, uppercase, bold-condensed grotesque.
   Zero serif, zero italic, single restrained accent.
   ============================================================== */

:root {
  /* Palette — near-monochrome */
  --color-bg: #0a0a0b;
  --color-surface: #101012;
  --color-surface-2: #16171a;
  --color-elevated: #1c1d21;
  --color-line: rgba(255, 255, 255, 0.09);
  --color-line-strong: rgba(255, 255, 255, 0.18);
  --color-divider: rgba(255, 255, 255, 0.11);
  --color-text: #ececec;
  --color-text-muted: #8a8a90;
  --color-text-dim: #5f5f65;
  --color-primary: #ececec;
  --color-accent: #d64848; /* single crimson accent — used ONLY for tags & warnings */
  --color-invert-bg: #ececec;
  --color-invert-text: #0a0a0b;

  /* Typography */
  --text-xs: 0.6875rem;   /* 11 */
  --text-sm: 0.8125rem;   /* 13 */
  --text-base: 0.9375rem; /* 15 */
  --text-md: 1.0625rem;   /* 17 */
  --text-lg: 1.25rem;     /* 20 */
  --text-xl: 1.625rem;    /* 26 */
  --text-2xl: clamp(2rem, 3.4vw, 2.75rem);   /* 32-44 */
  --text-3xl: clamp(2.75rem, 5.2vw, 4.25rem); /* 44-68 */
  --text-hero: clamp(3rem, 6.8vw, 6.25rem);   /* 48-100 */

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Fonts — all sans, no serif, no italic */
  --font-body: 'Inter', 'Helvetica Neue', sans-serif;
  --font-display: 'Archivo', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --content: 1440px;
  --content-narrow: 1120px;
  --gutter: clamp(1.25rem, 3vw, 2.5rem);
  --header-h: 68px;
}

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

html {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
}

img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }

::selection { background: var(--color-text); color: var(--color-bg); }

.muted { color: var(--color-text-muted); }
.dim { color: var(--color-text-dim); }
.strong { color: var(--color-text); font-weight: 600; }
.mono { font-family: var(--font-mono); }

/* ============ Type utilities ============ */

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.eyebrow--accent { color: var(--color-accent); }

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.375rem 0.625rem;
  border: 1px solid var(--color-line-strong);
  color: var(--color-text);
  background: transparent;
}
.tag--filled {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}
.tag--accent {
  color: var(--color-accent);
  border-color: rgba(214, 72, 72, 0.4);
}

.section-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
  margin-bottom: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Display headline for major sections — establishes top of visual hierarchy */
.section-header {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4.2vw, 3.75rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  line-height: 0.95;
  color: var(--color-text);
  margin-bottom: var(--space-10);
  max-width: 22ch;
}
.section-header--split {
  display: grid;
  grid-template-columns: minmax(440px, 1fr) 1.2fr;
  gap: var(--space-16);
  align-items: center;
  max-width: none;
}
.section-header__lede {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.55;
  color: var(--color-text-muted);
  text-transform: none;
  max-width: 52ch;
  align-self: center;
  text-box: trim-both cap alphabetic;
  text-box-trim: trim-both;
  text-box-edge: cap alphabetic;
}
.section-header--split .section-header {
  margin-bottom: 0;
  align-self: center;
}
.section-tag::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--color-accent);
  display: inline-block;
}

.h-display {
  font-family: var(--font-display);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.005em;
  line-height: 0.94;
  color: var(--color-text);
}

/* ============ Layout ============ */

.container {
  width: 100%;
  max-width: var(--content);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

section { position: relative; }

.section {
  padding: clamp(4rem, 7vw, 7rem) 0;
  border-bottom: 1px solid var(--color-divider);
}

.section--dark { background: var(--color-bg); }
.section--surface { background: var(--color-surface); }
.section--invert {
  background: var(--color-invert-bg);
  color: var(--color-invert-text);
}
.section--invert .section-tag,
.section--invert .eyebrow { color: rgba(10,10,11,0.6); }
.section--invert .muted { color: rgba(10,10,11,0.65); }

/* ============ Header ============ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  height: var(--header-h);
  background: rgba(10, 10, 11, 0.6);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background 0.25s ease, border-color 0.25s ease;
}
.site-header.is-scrolled {
  background: rgba(10, 10, 11, 0.92);
  border-bottom-color: var(--color-line);
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  max-width: var(--content);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: 0.04em;
  font-size: 0.875rem;
  flex-shrink: 0;
}
.brand__wordmark {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand__wordmark span {
  color: var(--color-text-muted);
  font-weight: 500;
  letter-spacing: 0.06em;
  margin-left: 0.5rem;
}

.site-nav {
  display: flex;
  gap: var(--space-8);
}
.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color 0.2s;
}
.site-nav a:hover { color: var(--color-text); }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.rfq-list-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5rem 0.875rem;
  border: 1px solid var(--color-line-strong);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
}
.rfq-list-btn__count {
  min-width: 20px;
  height: 20px;
  padding: 0 0.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-text);
  color: var(--color-bg);
  font-size: 0.6875rem;
  font-weight: 700;
}

/* ============ Buttons ============ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: 1rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
  white-space: nowrap;
}
.btn__arrow { transition: transform 0.2s; }
.btn:hover .btn__arrow { transform: translateX(4px); }

.btn--primary {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}
.btn--primary:hover { background: #fff; border-color: #fff; }

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-line-strong);
}
.btn--ghost:hover { border-color: var(--color-text); }

.btn--invert {
  background: var(--color-bg);
  color: var(--color-text);
  border-color: var(--color-bg);
}

/* ============ Hero ============ */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  isolation: isolate;
  border-bottom: 1px solid var(--color-divider);
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.35) contrast(1.05) brightness(0.75);
}
.hero__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(10,10,11,0.55) 0%, rgba(10,10,11,0.25) 30%, rgba(10,10,11,0.85) 92%),
    linear-gradient(90deg, rgba(10,10,11,0.75) 0%, rgba(10,10,11,0.25) 55%, rgba(10,10,11,0.35) 100%);
}
.hero__credit {
  position: absolute;
  bottom: 0.85rem;
  right: 1rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(236, 236, 236, 0.45);
  z-index: 2;
  pointer-events: none;
}

.hero__grid {
  flex: 1;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: calc(var(--header-h) + var(--space-10)) var(--gutter) var(--space-10);
  max-width: var(--content);
  width: 100%;
  margin: 0 auto;
  gap: var(--space-10);
}

.hero__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.hero__ident {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.hero__ident .tag { border-color: var(--color-line-strong); }

.hero__body {
  align-self: end;
  max-width: 1100px;
}
.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  line-height: 0.9;
  color: var(--color-text);
  margin-bottom: var(--space-8);
  max-width: 18ch;
}
.hero__title .accent { color: var(--color-accent); }
.hero__lede {
  font-size: var(--text-md);
  color: var(--color-text);
  max-width: 60ch;
  margin-bottom: var(--space-8);
  line-height: 1.55;
}

.hero__cta { display: flex; flex-wrap: wrap; gap: var(--space-3); }

.hero__ledger {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-line-strong);
}
.ledger-item__label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}
.ledger-item__value {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.005em;
  color: var(--color-text);
  line-height: 1.05;
}

/* ============ Compliance strip ============ */

.compliance {
  background: #000;
  border-bottom: 1px solid var(--color-divider);
}
.compliance__inner {
  max-width: var(--content);
  margin: 0 auto;
  padding: var(--space-4) var(--gutter);
  display: flex;
  gap: var(--space-6);
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}
.compliance__label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.compliance__items {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.compliance__item {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
}
.compliance__item .dot {
  display: inline-block;
  width: 4px; height: 4px;
  background: var(--color-accent);
  vertical-align: middle;
  margin-right: 0.5rem;
}

/* ============ Section: doctrine (positioning) ============ */

.doctrine {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: var(--space-16);
  align-items: start;
}
.doctrine__lead {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 6.5vw, 7rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.03em;
  line-height: 0.9;
  color: var(--color-text);
  overflow-wrap: normal;
  word-break: keep-all;
  hyphens: none;
  margin: 0;
}
.doctrine__body {
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  line-height: 1.6;
  align-self: start;
  max-width: 62ch;
  padding-top: var(--space-2);
}
.doctrine__body p { margin: 0 0 var(--space-5); }
.doctrine__body p:last-child { margin-bottom: 0; }
.doctrine__body strong { color: var(--color-text); font-weight: 500; }
@media (max-width: 960px) {
  .doctrine { grid-template-columns: 1fr; gap: var(--space-8); }
  .doctrine__lead { font-size: clamp(3rem, 12vw, 5rem); }
}

/* ============ Portfolio pathways ============ */

.pathways {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-divider);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  margin-top: clamp(4rem, 7vw, 7rem);
}
#portfolio > .container,
#applications > .container {
  margin-top: clamp(2rem, 4vw, 4rem);
}
.pathway {
  background: var(--color-bg);
  padding: var(--space-10) var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  transition: background 0.25s;
}
.pathway:hover { background: var(--color-surface); }
.pathway__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
}
.pathway__index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.pathway__badge {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.25rem 0.5rem;
  color: var(--color-accent);
  border: 1px solid rgba(214, 72, 72, 0.4);
}
.pathway__img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #000;
}
.pathway__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(0.35) contrast(1.1);
  transition: transform 0.5s ease;
}
.pathway:hover .pathway__img img { transform: scale(1.03); }
.pathway__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.005em;
  line-height: 1;
  color: var(--color-text);
}
.pathway__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
}
.pathway__specs {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: var(--space-2) var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}
.pathway__specs dt {
  color: var(--color-text-muted);
  text-transform: uppercase;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
}
.pathway__specs dd { color: var(--color-text); text-transform: uppercase; }
.pathway__cta {
  margin-top: auto;
  padding-top: var(--space-4);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-5);
}
.pathway__cta span { transition: transform 0.2s; }
.pathway:hover .pathway__cta span { transform: translateX(4px); }

/* ============ Materials index (data table) ============ */

.materials-groups {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
}
.materials-group {
  display: flex;
  flex-direction: column;
}
.materials-group__head {
  display: flex;
  align-items: baseline;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--color-divider);
  margin-bottom: var(--space-4);
}
.materials-group__num {
  color: var(--color-accent);
  font-weight: 700;
}
.materials-group__label {
  color: var(--color-text);
  font-weight: 600;
  flex: 1;
}
.materials-group__lead {
  color: var(--color-text);
  border: 1px solid var(--color-line-strong);
  padding: 4px 10px;
  letter-spacing: 0.16em;
  font-size: 0.6875rem;
}
.materials-group__lead .accent {
  color: var(--color-accent);
}

.materials-table {
  border-top: 1px solid var(--color-line-strong);
}
.material-row {
  display: grid;
  grid-template-columns: 80px 1.6fr 1.4fr 1.6fr 64px;
  gap: var(--space-8);
  align-items: center;
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-divider);
  transition: background 0.2s;
  cursor: pointer;
}
.material-row:hover { background: var(--color-surface); }

.material-row__sym {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: -0.015em;
  color: var(--color-text);
  line-height: 1;
}
.material-row__name {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.005em;
  color: var(--color-text);
}
.material-row__alloys {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: var(--space-2);
}
.material-row__cell-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: var(--space-1);
}
.material-row__cell-value {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text);
}
.material-row__arrow {
  width: 40px; height: 40px;
  border: 1px solid var(--color-line-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  justify-self: end;
  transition: background 0.2s, transform 0.2s;
}
.material-row:hover .material-row__arrow {
  background: var(--color-text);
  color: var(--color-bg);
}

/* ============ Materials index — periodic table with form selectors ============ */
.mtable {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--space-8);
  align-items: start;
  margin-top: var(--space-10);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-10);
}

/* ---------- LEFT RAIL ---------- */
.mtable__rail {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  position: sticky;
  top: var(--space-8);
}

.mtab {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-5);
  background: transparent;
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--color-text-muted);
  text-align: left;
  cursor: pointer;
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
  position: relative;
  overflow: hidden;
}
.mtab::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--color-accent);
  transform: scaleY(0);
  transform-origin: center;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.mtab:hover {
  color: var(--color-text);
  border-color: rgba(255,255,255,0.2);
}
.mtab.is-active {
  color: var(--color-text);
  border-color: rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.03);
}
.mtab.is-active::before,
.mtab:hover::before { transform: scaleY(1); }

.mtab__num {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  padding-top: 0.15rem;
}
.mtab__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 0;
}
.mtab__name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
  color: inherit;
  text-transform: uppercase;
}
.mtab__meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  line-height: 1.4;
}
.mtab__psd {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  line-height: 1.4;
}
.mtab.is-active .mtab__meta,
.mtab.is-active .mtab__psd { color: rgba(255,255,255,0.75); }

.mtab__count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  padding-top: 0.15rem;
  align-self: start;
}
.mtab.is-active .mtab__count { color: var(--color-accent); }

.mtab--cta {
  border-style: dashed;
  border-color: rgba(255,255,255,0.15);
  margin-top: var(--space-3);
}
.mtab--cta .mtab__num { color: var(--color-accent); font-size: 1rem; letter-spacing: 0; }
.mtab--cta .mtab__count { color: var(--color-accent); font-size: 1rem; }
.mtab--cta:hover { border-color: var(--color-accent); }

/* ---------- RIGHT PANEL ---------- */
.mtable__stage { min-height: 640px; }

.mpanel { display: none; }
.mpanel.is-active {
  display: block;
  animation: mpanelIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes mpanelIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Panel header w/ specs meta strip */
.mpanel__hd {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding-bottom: var(--space-6);
  margin-bottom: var(--space-6);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.mpanel__label {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.mpanel__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.mpanel__title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  text-transform: uppercase;
  margin: 0;
}
.mpanel__specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4) var(--space-8);
}
.mpanel__specs > div {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.mpanel__specs dt {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.mpanel__specs dd {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-text);
  margin: 0;
  line-height: 1.4;
}

/* ---------- ELEMENT GRID ---------- */
.mgrid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}
@media (max-width: 1180px) { .mgrid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 820px)  { .mgrid { grid-template-columns: repeat(2, 1fr); } }

.mtile {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-5);
  min-height: 240px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.005));
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--color-text);
  text-decoration: none;
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.25s ease, background 0.25s ease;
}
.mtile::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.mtile:hover {
  border-color: rgba(255,255,255,0.22);
  background: linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.01));
  transform: translateY(-2px);
}
.mtile:hover::before { transform: scaleX(1); }

/* Tile header row: atomic no. + class */
.mtile__hd {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  font-family: var(--font-mono);
}
.mtile__z {
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  color: var(--color-text);
  font-weight: 500;
}
.mtile__class {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Hero element symbol */
.mtile__sym {
  font-family: var(--font-display);
  font-size: 4.5rem;
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 0.85;
  color: var(--color-text);
  display: block;
  margin-top: auto;
}
.mtile__sym--compact {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
}
.mtile:hover .mtile__sym { color: var(--color-accent); }

/* Tile body: name + grades */
.mtile__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-height: 0;
}
.mtile__name {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.25;
  color: var(--color-text);
  text-transform: uppercase;
}
.mtile__grades {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  line-height: 1.45;
}

/* Tile footer CTA */
.mtile__cta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid rgba(255,255,255,0.08);
  transition: color 0.2s;
}
.mtile__cta span { transition: transform 0.2s; }
.mtile:hover .mtile__cta { color: var(--color-text); }
.mtile:hover .mtile__cta span { transform: translateX(4px); }

/* Custom tile variant */
.mtile--custom {
  border-style: dashed;
  border-color: rgba(255,255,255,0.18);
  background: transparent;
}
.mtile--custom .mtile__sym { color: var(--color-accent); }

/* Responsive */
@media (max-width: 980px) {
  .mtable { grid-template-columns: 1fr; }
  .mtable__rail {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .mtab { flex: 1 1 240px; }
  .mpanel__specs { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .mtile { padding: var(--space-4); min-height: 200px; }
  .mtile__sym { font-size: 3.5rem; }
}


/* ============ Program supply ============ */

.program {
  display: grid;
  grid-template-columns: minmax(440px, 1fr) 1.35fr;
  gap: var(--space-16);
}
.program__intro h2 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.015em;
  line-height: 0.95;
  margin-bottom: var(--space-8);
  max-width: 14ch;
}
.program__intro p {
  color: var(--color-text-muted);
  font-size: var(--text-xl);
  line-height: 1.5;
  max-width: 44ch;
  font-weight: 300;
}

.program__list {
  display: flex;
  flex-direction: column;
}
.program__item {
  background: var(--color-bg);
  display: grid;
  grid-template-columns: 60px 220px 1fr;
  align-items: start;
  gap: var(--space-6);
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-divider);
}
.program__item:first-child { border-top: none; padding-top: 0; }
.program__item:last-child { padding-bottom: 0; }
.program__num {
  padding-left: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
  padding-top: 4px;
}
.program__label {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.005em;
  line-height: 1.1;
}
.program__desc {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.6;
  max-width: 52ch;
}

/* ============ Applications ============ */

.applications {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--color-divider);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  margin-top: clamp(4rem, 7vw, 7rem);
}
.application {
  background: var(--color-bg);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-height: 320px;
  transition: background 0.2s;
}
.application:hover { background: var(--color-surface); }
.application__index {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
}
.application__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.005em;
  line-height: 1.05;
}
.application__desc {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.55;
  max-width: 40ch;
}
.application__list {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.application__list li {
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* ============ RFQ ============ */

.rfq {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-16);
  align-items: start;
}
.rfq__intro h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 1;
  margin-bottom: var(--space-6);
  max-width: 14ch;
}
.rfq__intro p {
  color: var(--color-text-muted);
  font-size: var(--text-md);
  line-height: 1.65;
  max-width: 46ch;
  margin-bottom: var(--space-8);
}
.rfq__notes {
  list-style: none;
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-6);
}
.rfq__notes li {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  gap: var(--space-4);
}
.rfq__notes li::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--color-accent);
  margin-top: 8px;
  flex-shrink: 0;
}

.rfq__form {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  padding: var(--space-8);
}
.rfq__step {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
  margin-bottom: var(--space-6);
  display: flex;
  gap: var(--space-4);
  align-items: center;
}
.rfq__step-num { color: var(--color-accent); }
.rfq__step-name { color: var(--color-text); }

.rfq__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}
.rfq__field { display: flex; flex-direction: column; gap: var(--space-2); }
.rfq__field--full { grid-column: span 2; }

.rfq__label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.rfq__input, .rfq__select, .rfq__textarea {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-line-strong);
  padding: 0.75rem 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--color-text);
  outline: none;
  transition: border-color 0.2s;
}
.rfq__input:focus, .rfq__select:focus, .rfq__textarea:focus {
  border-bottom-color: var(--color-text);
}
.rfq__select {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'><path d='M1 1L6 6L11 1' stroke='%238a8a90' stroke-width='1.5'/></svg>");
  background-repeat: no-repeat;
  background-position: right 0 center;
  padding-right: 24px;
}
.rfq__textarea { min-height: 100px; resize: vertical; }

.rfq__submit {
  margin-top: var(--space-8);
  width: 100%;
}

/* ============ Closer ============ */

.closer {
  padding: clamp(6rem, 12vw, 10rem) 0;
  border-bottom: 1px solid var(--color-divider);
  background:
    radial-gradient(60% 80% at 50% 40%, rgba(214, 72, 72, 0.06), transparent 60%),
    var(--color-bg);
}
.closer__inner {
  max-width: var(--content);
  margin: 0 auto;
  padding: 0 var(--gutter);
  text-align: center;
}
.closer__pretitle {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
.closer__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.015em;
  line-height: 0.95;
  max-width: 20ch;
  margin: 0 auto var(--space-6);
}
.closer__cta { justify-content: center; display: flex; gap: var(--space-3); flex-wrap: wrap; }

/* ============ Footer ============ */

.site-footer {
  background: #000;
  padding: var(--space-16) 0 var(--space-8);
}
.site-footer__inner {
  max-width: var(--content);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr 1.2fr;
  gap: var(--space-8);
}
.site-footer__brand { display: flex; flex-direction: column; gap: var(--space-4); }
.site-footer__brand-lockup { display: flex; align-items: center; gap: var(--space-3); }
.site-footer__brand svg { color: var(--color-text); }
.site-footer__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.site-footer__tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  max-width: 30ch;
  line-height: 1.6;
}
.site-footer__col h4 {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.site-footer__col ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-3); }
.site-footer__col a {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--color-text);
  transition: color 0.15s;
}
.site-footer__col a:hover { color: var(--color-accent); }

.site-footer__base {
  max-width: var(--content);
  margin: var(--space-12) auto 0;
  padding: var(--space-6) var(--gutter) 0;
  border-top: 1px solid var(--color-divider);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* ============ Motion ============ */

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1);
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ============ Responsive ============ */

@media (max-width: 1080px) {
  .hero__ledger { grid-template-columns: repeat(2, 1fr); }
  .pathways { grid-template-columns: 1fr; }
  .applications { grid-template-columns: repeat(2, 1fr); }
  .doctrine { grid-template-columns: 1fr; gap: var(--space-8); }
  .program { grid-template-columns: 1fr; gap: var(--space-8); }
  .rfq { grid-template-columns: 1fr; }
  .material-row { grid-template-columns: 64px 1.4fr 1fr 48px; gap: var(--space-4); }
  .material-row__cell:nth-child(4) { display: none; }
}
@media (max-width: 900px) {
  .site-nav { display: none; }
  .brand__wordmark span { display: none; }
}
@media (max-width: 720px) {
  :root { --header-h: 60px; --gutter: 1.125rem; }
  .brand__wordmark { font-size: 0.8125rem; }
  .hero__title {
    max-width: 100%;
    font-size: clamp(2.5rem, 11vw, 3.5rem);
    letter-spacing: -0.03em;
    line-height: 0.94;
  }
  .hero__lede { font-size: 0.9375rem; }
  .hero__ident { gap: var(--space-2); }
  .hero__ident .tag { font-size: 0.625rem; padding: 0.25rem 0.5rem; }
  .hero__grid { gap: var(--space-6); padding-top: calc(var(--header-h) + var(--space-6)); }
  .hero__ledger { grid-template-columns: 1fr 1fr; gap: var(--space-4); padding-top: var(--space-4); }
  .ledger-item__value { font-size: 1.0625rem; }
  .applications { grid-template-columns: 1fr; }
  .application { min-height: unset; }
  .program__item { grid-template-columns: 40px 1fr; gap: var(--space-3); }
  .program__item .program__desc { grid-column: 2; }
  .program__label { font-size: 0.9375rem; }
  .material-row {
    grid-template-columns: 56px 1fr 40px;
    padding: var(--space-5) 0;
    gap: var(--space-3);
  }
  .material-row__cell { display: none; }
  .material-row__alloys { display: none; }
  .material-row__name { font-size: 0.875rem; }
  .material-row__sym { font-size: 2rem; }
  .rfq__grid { grid-template-columns: 1fr; }
  .rfq__field--full { grid-column: 1; }
  .rfq__form { padding: var(--space-5); }
  .site-footer__inner { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .compliance__label { display: none; }
  .compliance__items { gap: var(--space-2) var(--space-4); }
  .compliance__item { font-size: 0.625rem; letter-spacing: 0.1em; }
  .rfq-list-btn { padding: 0.375rem 0.5rem; }
  .rfq-list-btn > span:last-child { display: none; }
  .header-actions .btn { padding: 0.625rem 0.875rem; font-size: 0.6875rem; }
  .closer__title { font-size: clamp(2rem, 9vw, 3rem); }
}
@media (max-width: 520px) {
  .rfq-list-btn { padding: 0.5rem 0.625rem; }
  .header-actions .btn { padding: 0.5rem 0.625rem; font-size: 0.625rem; letter-spacing: 0.08em; }
  .site-header__inner { gap: 0.5rem; }
  .brand { gap: 0.5rem; }
  .brand__mark { width: 30px; height: 30px; font-size: 0.75rem; }
  .brand__wordmark { font-size: 0.75rem; letter-spacing: 0.05em; }
}
@media (max-width: 400px) {
  .brand__wordmark { font-size: 0.6875rem; }
  .rfq-list-btn { display: none; }
  .header-actions .btn { padding: 0.5rem 0.75rem; font-size: 0.6875rem; }
}

/* ============ Engagement band (Programs, not spot buys) ============ */
.engage-band {
  background: linear-gradient(180deg, rgba(220,38,38,0.05) 0%, rgba(220,38,38,0.01) 100%);
  border-top: 1px solid var(--color-accent);
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-12) 0;
}
.engage-band__inner {
  max-width: 900px;
}
.engage-band__kicker {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}
.engage-band__headline {
  font-family: var(--font-display, var(--font-heading, sans-serif));
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--color-text-strong, #f4f4f5);
  margin: 0 0 var(--space-5);
  font-weight: 800;
  text-transform: uppercase;
}
.engage-band__body {
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text);
  margin: 0 0 var(--space-6);
  max-width: 68ch;
}
.engage-band__cta {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}
@media (max-width: 720px) {
  .engage-band { padding: var(--space-10) 0; }
  .engage-band__body { font-size: 1rem; }
}

/* ============ Trust strip ============ */
.trust {
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-bg);
  padding: var(--space-12) 0;
}
.trust__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-10);
}
.trust__stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  border-left: 1px solid var(--color-line-strong);
  padding-left: var(--space-6);
}
.trust__num {
  font-family: var(--font-display);
  font-size: var(--text-hero-sm);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1;
}
.trust__label {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--color-text-muted);
  max-width: 260px;
}

/* ============ Selector ============ */
.selector__intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: end;
  margin-bottom: var(--space-10);
}
.selector__title {
  font-family: var(--font-display);
  font-size: var(--text-hero-sm);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin: 0;
}
.selector__lede {
  font-size: var(--text-md);
  line-height: 1.55;
  color: var(--color-text-muted);
  max-width: 460px;
}
.selector__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-divider);
  border: 1px solid var(--color-divider);
}
.selector__card {
  background: var(--color-bg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  color: var(--color-text);
  text-decoration: none;
  transition: background 0.25s;
  min-height: 200px;
}
.selector__card:hover {
  background: var(--color-surface);
}
.selector__q {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}
.selector__a {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--color-text);
  line-height: 1.05;
  margin-top: var(--space-2);
}
.selector__note {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-top: auto;
  padding-top: var(--space-4);
}
.selector__go {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  padding-top: var(--space-2);
}
.selector__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-6);
  padding-top: var(--space-8);
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* ============ Program Tiers ============ */
.tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-10);
}
.tier {
  background: var(--color-bg);
  border: 1px solid var(--color-divider);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: relative;
}
.tier--featured {
  border-color: var(--color-accent);
  background: linear-gradient(180deg, rgba(214, 72, 72, 0.06) 0%, transparent 50%), var(--color-bg);
}
.tier--featured::before {
  content: "MOST COMMON";
  position: absolute;
  top: -10px;
  left: var(--space-6);
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  padding: 4px 10px;
  font-weight: 700;
}
.tier__head {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}
.tier__code {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--color-text);
  letter-spacing: -0.02em;
  line-height: 1;
}
.tier__name {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.tier__desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  min-height: 84px;
}
.tier__specs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}
.tier__specs dt {
  color: var(--color-text-dim);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding-top: var(--space-3);
}
.tier__specs dt:first-of-type {
  padding-top: 0;
}
.tier__specs dd {
  color: var(--color-text);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-top: 4px;
  padding-bottom: var(--space-2);
  border-bottom: 1px dashed var(--color-divider);
  margin: 0;
}
.tier__specs dd:last-of-type {
  border-bottom: 0;
}
.tier__cta {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
  text-decoration: none;
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-4);
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.2s;
}
.tier__cta:hover {
  color: var(--color-accent);
}
.tiers__foot {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  padding-top: var(--space-8);
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.tiers__foot-item .accent { color: var(--color-accent); }

/* ============ Scroll reveal ============ */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.9s cubic-bezier(0.22, 0.61, 0.36, 1);
  will-change: opacity, transform;
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ============ Mobile ============ */
@media (max-width: 900px) {
  .trust__grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
  .selector__intro { grid-template-columns: 1fr; gap: var(--space-4); }
  .selector__grid { grid-template-columns: 1fr 1fr; }
  .tiers { grid-template-columns: 1fr; }
  .tiers__foot { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .selector__grid { grid-template-columns: 1fr; }
  .trust__grid { grid-template-columns: 1fr; }
  .trust__stat { border-left: 0; border-top: 1px solid var(--color-line-strong); padding-left: 0; padding-top: var(--space-4); }
  .tiers__foot { grid-template-columns: 1fr; }
  .materials-group__head { flex-wrap: wrap; }
  .materials-group__lead { margin-top: var(--space-2); }
}

.application__foot {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px dashed var(--color-divider);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--color-accent);
  text-transform: uppercase;
}

/* ================================================================
   INTERIOR PAGE FRAMEWORK — added for full page buildout
   ================================================================ */

/* Page hero (used on every interior page) */
.page-hero {
  position: relative;
  padding: calc(var(--space-12) + 60px) 0 var(--space-10);
  overflow: hidden;
  border-bottom: 1px solid var(--color-line-strong);
}
.page-hero__inner {
  position: relative;
  z-index: 2;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-8);
}
.page-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0.22;
  background-size: cover;
  background-position: center;
  filter: grayscale(0.4) contrast(1.05);
}
.page-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,10,11,0.55) 0%, rgba(10,10,11,0.85) 60%, rgba(10,10,11,0.98) 100%);
}
.page-hero__bg--visible {
  opacity: 1;
  filter: grayscale(0) contrast(1.2) brightness(1.35) saturate(1.15);
}
.page-hero__bg--medium {
  opacity: 0.55;
  filter: grayscale(0.2) contrast(1.1) brightness(1.1) saturate(1.05);
}
.page-hero__bg--medium::after {
  background: linear-gradient(180deg, rgba(10,10,11,0.35) 0%, rgba(10,10,11,0.55) 60%, rgba(10,10,11,0.85) 100%);
}
.page-hero__bg--medium ~ .page-hero__inner .page-hero__title,
.page-hero__bg--medium ~ .page-hero__inner .page-hero__lede {
  text-shadow: 0 2px 10px rgba(0,0,0,0.75), 0 1px 2px rgba(0,0,0,0.85);
}
.page-hero__bg--visible::after {
  background:
    radial-gradient(ellipse 55% 70% at 22% 55%, rgba(10,10,11,0.6) 0%, rgba(10,10,11,0.25) 45%, rgba(10,10,11,0) 75%),
    linear-gradient(180deg, rgba(10,10,11,0) 0%, rgba(10,10,11,0) 65%, rgba(10,10,11,0.35) 90%, rgba(10,10,11,0.7) 100%);
}
.page-hero__bg--visible ~ .page-hero__inner .page-hero__title,
.page-hero__bg--visible ~ .page-hero__inner .page-hero__lede {
  text-shadow: 0 2px 12px rgba(0,0,0,0.85), 0 1px 3px rgba(0,0,0,0.9);
}
.page-hero__kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.page-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  max-width: 20ch;
}
.page-hero__lede {
  font-size: 1.125rem;
  line-height: 1.55;
  color: var(--color-text-muted);
  max-width: 62ch;
}
.page-hero__meta {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-line-strong);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  flex-wrap: wrap;
}
.page-hero__meta strong { color: var(--color-text); font-weight: 500; }

/* Page section (generic content block) */
.page-section {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-divider);
}
.page-section--tight { padding: var(--space-10) 0; }
.page-section__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-8);
}
.page-section__head {
  display: grid;
  grid-template-columns: minmax(180px, 260px) 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-divider);
}
.page-section__ledger {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  text-transform: uppercase;
  padding-top: 0.4rem;
}
.page-section__ledger strong {
  display: block;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}
.page-section__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  line-height: 1;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--color-text);
}
.page-section__lede {
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--color-text-muted);
  margin-top: var(--space-4);
  max-width: 62ch;
}
.page-section__body { max-width: 68ch; }
.page-section__body p {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.page-section__body p + p { margin-top: 0; }
.page-section__body strong { color: var(--color-text); font-weight: 500; }

/* Card grid variants */
.card-grid {
  display: grid;
  gap: var(--space-6);
}
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }
.card-grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-line-strong);
  padding: var(--space-6);
  position: relative;
}
.card__num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
}
.card__body {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}
.card__foot {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px dashed var(--color-divider);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--color-accent);
  text-transform: uppercase;
}
.card--link {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: border-color 160ms ease, transform 160ms ease, background 160ms ease;
}
.card--link:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  background: color-mix(in srgb, var(--color-surface) 90%, var(--color-accent));
}

/* Fact rows (used in About, Compliance, Quality) */
.fact-row {
  display: grid;
  grid-template-columns: minmax(220px, 300px) 1fr;
  gap: var(--space-6);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-divider);
}
.fact-row__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.fact-row__value {
  font-size: 1rem;
  line-height: 1.55;
  color: var(--color-text);
}
.fact-row__value .pending {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* CTA blocks */
.cta-block {
  padding: var(--space-12) var(--space-10);
  border: 1px solid var(--color-line-strong);
  background: linear-gradient(135deg, var(--color-surface) 0%, rgba(214, 72, 72, 0.04) 100%);
  text-align: left;
  margin: var(--space-8) 0;
}
.cta-block__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--color-text);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
  max-width: 24ch;
}
.cta-block__body {
  font-size: 1rem;
  line-height: 1.55;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  max-width: 62ch;
}
.cta-block__actions { display: flex; gap: var(--space-4); flex-wrap: wrap; }

/* Buttons (interior pages) */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.9rem 1.4rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
  border: 1px solid var(--color-line-strong);
  background: transparent;
  transition: all 0.2s ease;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--color-text); color: var(--color-bg); }
.btn--accent {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text);
  padding: 1.125rem 1.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  box-shadow: 0 2px 0 rgba(0,0,0,0.4), 0 8px 24px rgba(214, 72, 72, 0.18);
}
.btn--accent:hover {
  background: #b53838;
  border-color: #b53838;
  color: var(--color-text);
  transform: translateY(-1px);
  box-shadow: 0 3px 0 rgba(0,0,0,0.4), 0 12px 32px rgba(214, 72, 72, 0.32);
}
.btn--accent:active { transform: translateY(0); box-shadow: 0 1px 0 rgba(0,0,0,0.4), 0 4px 12px rgba(214, 72, 72, 0.18); }

/* Timeline (About, Programs) */
.timeline {
  border-left: 1px solid var(--color-line-strong);
  padding-left: var(--space-8);
  margin-left: var(--space-4);
}
.timeline__item { position: relative; padding: 0 0 var(--space-8) 0; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-8) - 5px);
  top: 8px;
  width: 9px;
  height: 9px;
  background: var(--color-accent);
  border-radius: 50%;
}
.timeline__phase {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.timeline__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
}
.timeline__body {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

/* Application landing hero image */
.app-hero {
  position: relative;
  min-height: 60vh;
  padding: calc(var(--space-12) + 80px) 0 var(--space-12);
  overflow: hidden;
  display: flex;
  align-items: flex-end;
}
.app-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-size: cover;
  background-position: center;
  opacity: 0.5;
  filter: grayscale(0.3);
}
.app-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,10,11,0.5) 0%, rgba(10,10,11,0.9) 100%);
}
.app-hero__inner {
  position: relative;
  z-index: 2;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-8);
  width: 100%;
}

/* Forms (RFQ, Contact) */
.form-section { max-width: 900px; margin: 0 auto; }
.form-step {
  border: 1px solid var(--color-line-strong);
  padding: var(--space-8);
  margin-bottom: var(--space-6);
  background: var(--color-surface);
}
.form-step__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.form-step__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.375rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
}
.form-field {
  margin-bottom: var(--space-4);
}
.form-field__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.form-field__input,
.form-field__textarea,
.form-field__select {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-line-strong);
  color: var(--color-text);
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  transition: border-color 0.2s ease;
}
.form-field__input:focus,
.form-field__textarea:focus,
.form-field__select:focus {
  outline: none;
  border-color: var(--color-accent);
}
.form-field__textarea { min-height: 120px; resize: vertical; }
.form-field__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.form-field__hint {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-top: 0.4rem;
  text-transform: uppercase;
}
.form-checkbox {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-3) 0;
  border-bottom: 1px dashed var(--color-divider);
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-text);
  cursor: pointer;
}
.form-checkbox input { margin-top: 0.3rem; accent-color: var(--color-accent); }

/* Radio for engagement type */
.form-radio {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-4) 0;
  border-bottom: 1px dashed var(--color-divider);
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--color-text);
  cursor: pointer;
}
.form-radio label { cursor: pointer; flex: 1; }
.form-radio label strong { color: var(--color-text-strong, #f4f4f5); display: inline; font-weight: 600; }
.form-radio input { margin-top: 0.35rem; accent-color: var(--color-accent); flex-shrink: 0; width: 18px; height: 18px; cursor: pointer; }

/* Decline block for spot-buy filter */
.decline-block {
  margin: var(--space-6) 0;
  border: 1px solid var(--color-accent);
  background: linear-gradient(180deg, rgba(220,38,38,0.06), rgba(220,38,38,0.02));
  border-radius: 2px;
}
.decline-block__inner {
  padding: var(--space-6);
}
.decline-block__kicker {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.decline-block__title {
  font-family: var(--font-display, var(--font-heading, sans-serif));
  font-size: 1.5rem;
  line-height: 1.2;
  color: var(--color-text-strong, #f4f4f5);
  margin: 0 0 var(--space-4);
  font-weight: 700;
}
.decline-block p {
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: var(--space-3);
  max-width: 65ch;
}
.decline-block__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-5);
}

/* COA sample */
.coa {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.5;
  background: var(--color-bg);
  border: 1px solid var(--color-line-strong);
  padding: var(--space-6);
  color: var(--color-text);
  overflow-x: auto;
  white-space: pre;
}

/* Terms / Legal pages */
.legal-page { max-width: 720px; margin: 0 auto; }
.legal-page h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.375rem;
  letter-spacing: -0.005em;
  color: var(--color-text);
  text-transform: uppercase;
  margin: var(--space-8) 0 var(--space-4);
}
.legal-page h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.06em;
  color: var(--color-text);
  text-transform: uppercase;
  margin: var(--space-6) 0 var(--space-3);
}
.legal-page p, .legal-page li {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.legal-page ul, .legal-page ol { padding-left: var(--space-6); }
.legal-page ul li, .legal-page ol li { margin-bottom: var(--space-2); }

/* Footer (5-column) */
.site-footer {
  padding: var(--space-12) 0 var(--space-6);
  border-top: 1px solid var(--color-line-strong);
  background: #060607;
}
.site-footer__inner {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: var(--space-8);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--color-divider);
}
.site-footer__col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.site-footer__h {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.site-footer__mark {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.125rem;
  letter-spacing: 0.02em;
  color: var(--color-text);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.site-footer__tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: var(--space-4);
  max-width: 32ch;
  line-height: 1.6;
}
.site-footer__contact {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}
.site-footer__col a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
  padding: 0.15rem 0;
}
.site-footer__col a:hover { color: var(--color-text); }
.site-footer__legal {
  display: flex;
  justify-content: space-between;
  padding-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}
.site-footer__legal-links {
  display: flex;
  gap: var(--space-6);
}
.site-footer__legal-links a {
  color: var(--color-text-muted);
  text-decoration: none;
}
.site-footer__legal-links a:hover { color: var(--color-text); }

/* Material page - narrative section */
.mat-narrative { padding: var(--space-12) 0; border-bottom: 1px solid var(--color-divider); }
.mat-narrative__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-8);
  display: grid;
  grid-template-columns: minmax(180px, 260px) 1fr;
  gap: var(--space-10);
}
.mat-narrative__body p {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  max-width: 66ch;
}
.mat-narrative__body p:last-child { margin-bottom: 0; }
.mat-narrative__body strong { color: var(--color-text); font-weight: 500; }

/* Material - processing methods */
.mat-proc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.mat-proc {
  background: var(--color-surface);
  border: 1px solid var(--color-line-strong);
  padding: var(--space-5);
}
.mat-proc__method {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.005em;
  color: var(--color-text);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.mat-proc__note {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

/* Material - QC rows */
.mat-qc {
  border-top: 1px solid var(--color-line-strong);
}
.mat-qc__row {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-6);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-divider);
}
.mat-qc__key {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--color-accent);
  text-transform: uppercase;
}
.mat-qc__val {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--color-text);
}
.mat-qc__foot {
  padding-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}
.mat-close__lede {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  max-width: 62ch;
  margin-bottom: var(--space-6);
}

/* Materials hub */
.materials-hub {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.material-card {
  border: 1px solid var(--color-line-strong);
  background: var(--color-surface);
  padding: var(--space-6);
  text-decoration: none;
  color: var(--color-text);
  transition: transform 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
  display: block;
  position: relative;
}
.material-card__chips {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}
.material-card__chip {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.12em;
  padding: 3px 6px;
  border: 1px solid var(--color-line-strong);
  color: var(--color-text-muted);
  text-transform: uppercase;
  white-space: nowrap;
  line-height: 1;
  background: var(--color-surface);
}
.material-card__chip--spherical {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.material-card__chip--angular {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}
.material-card__chip--mill {
  border-color: var(--color-line-strong);
  color: var(--color-text-muted);
}
.material-card--dim {
  opacity: 0.28;
  pointer-events: none;
}

/* Format filter bar */
.material-filter {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding: var(--space-4) 0;
  border-top: 1px solid var(--color-line-strong);
  border-bottom: 1px solid var(--color-line-strong);
  flex-wrap: wrap;
}
.material-filter__label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}
.material-filter__buttons {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.material-filter__btn {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  padding: 8px 14px;
  border: 1px solid var(--color-line-strong);
  background: transparent;
  color: var(--color-text-muted);
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.material-filter__btn:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}
.material-filter__btn.is-active {
  color: var(--color-text);
  border-color: var(--color-accent);
  background: rgba(214, 72, 72, 0.08);
}
.material-filter__btn.is-active[data-filter="spherical"] {
  color: var(--color-accent);
}
.material-filter__count {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--color-text-dim);
  text-transform: uppercase;
  margin-left: auto;
}
.material-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent);
}
.material-card__symbol {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 2.5rem;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}
.material-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.005em;
  color: var(--color-text);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.material-card__lede {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.material-card__meta {
  padding-top: var(--space-3);
  border-top: 1px dashed var(--color-divider);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

/* Mobile */
@media (max-width: 900px) {
  .site-footer__inner { grid-template-columns: 1fr 1fr; }
  .card-grid--3, .card-grid--4 { grid-template-columns: 1fr 1fr; }
  .page-section__head { grid-template-columns: 1fr; gap: var(--space-4); }
  .fact-row { grid-template-columns: 1fr; gap: var(--space-2); }
  .mat-narrative__inner { grid-template-columns: 1fr; gap: var(--space-4); }
  .mat-proc-grid { grid-template-columns: 1fr 1fr; }
  .mat-qc__row { grid-template-columns: 1fr; gap: var(--space-2); }
  .materials-hub { grid-template-columns: 1fr 1fr; }
  .site-footer__legal { flex-direction: column; gap: var(--space-3); }
  .app-hero { min-height: auto; padding: calc(var(--space-10) + 60px) 0 var(--space-8); }
  .form-field__grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .site-footer__inner { grid-template-columns: 1fr; }
  .card-grid--3, .card-grid--4, .card-grid--2 { grid-template-columns: 1fr; }
  .mat-proc-grid { grid-template-columns: 1fr; }
  .materials-hub { grid-template-columns: 1fr; }
  .page-hero__title { max-width: none; }
  .cta-block { padding: var(--space-8) var(--space-6); }
}

/* =================================================================
   INTERIOR PAGE HEADER (used by mps_shared.py head/nav)
   ================================================================= */
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--gutter);
  max-width: var(--content);
  margin: 0 auto;
  gap: var(--space-6);
}
.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}
.site-header__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: 0.04em;
  font-size: 0.875rem;
}
.site-header__wordmark {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
}
.site-header__nav {
  display: flex;
  gap: var(--space-6);
  margin-left: auto;
}
.site-header__nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.site-header__nav a:hover {
  color: var(--color-text);
}
.site-header__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: transparent;
  border: 1px solid var(--color-text);
  color: var(--color-text);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: background 0.2s, color 0.2s;
}
.site-header__cta:hover {
  background: var(--color-text);
  color: var(--color-bg);
}
.site-header__arrow {
  font-weight: 700;
}
@media (max-width: 900px) {
  .site-header__nav { display: none; }
  .site-header__wordmark { font-size: 0.75rem; }
}

/* =================================================================
   MATERIAL PAGE COMPONENTS
   ================================================================= */
.mat-hero {
  position: relative;
  padding: var(--space-16) 0 var(--space-12);
  overflow: hidden;
  border-bottom: 1px solid var(--color-line);
  isolation: isolate;
  background: linear-gradient(180deg, #0a0a0b 0%, #101012 100%);
}
.mat-hero__bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.22;
  z-index: -1;
}
.mat-hero::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,10,11,0) 0%, rgba(10,10,11,0.85) 100%);
  z-index: -1;
}
.mat-hero__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-8);
  align-items: start;
}
.mat-hero__symbol {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 8rem;
  line-height: 0.85;
  color: var(--color-accent);
  letter-spacing: -0.02em;
  padding-right: var(--space-6);
  border-right: 1px solid var(--color-line-strong);
}
.mat-hero__crumb {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text);
  opacity: 0.85;
  margin-bottom: var(--space-4);
}
.mat-hero__crumb a { color: var(--color-text-muted); text-decoration: none; }
.mat-hero__crumb a:hover { color: var(--color-text); }
.mat-hero__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  line-height: 1.02;
  color: var(--color-text);
  letter-spacing: -0.01em;
  margin-bottom: var(--space-3);
  text-transform: none;
}
.mat-hero__desc {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-bottom: var(--space-6);
}
.mat-hero__desc strong { color: var(--color-text); font-weight: 600; }
.mat-hero__ledger {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-6);
}
.mat-hero__ledger dt {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}
.mat-hero__ledger dd {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9375rem;
  letter-spacing: 0.06em;
  color: var(--color-text);
  text-transform: uppercase;
  margin: 0;
}
.mat-hero__cta {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-6);
}

/* Alloys */
.mat-alloys {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-line);
}
.mat-alloys__inner {
  max-width: var(--content);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.mat-alloys__title, .mat-apps__title, .mat-narrative__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.875rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}
.mat-alloys__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-6);
}
.mat-alloy {
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  transition: border-color 0.2s;
}
.mat-alloy:hover { border-color: var(--color-accent); }
.mat-alloy__code {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.125rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}
.mat-alloy__desc {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

/* Applications on material pages */
.mat-apps {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-line);
}
.mat-apps__inner {
  max-width: var(--content);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.mat-apps__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}
.mat-app {
  padding: var(--space-6);
  background: var(--color-surface);
  border-left: 2px solid var(--color-accent);
}
.mat-app__sector {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.mat-app__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  letter-spacing: 0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
}
.mat-app__note {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

/* Narrative sections */
.mat-narrative {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-line);
}
.mat-narrative__inner {
  max-width: var(--content);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-10);
}
.mat-narrative__num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.mat-narrative__body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: 65ch;
}
.mat-narrative__body p { margin: 0 0 var(--space-4) 0; }
.mat-narrative__body strong { color: var(--color-text); font-weight: 600; }

/* Closer */
.mat-close {
  padding: var(--space-16) 0;
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg) 0%, #060607 100%);
}
.mat-close__inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.mat-close__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
}
.mat-close__lede {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  max-width: 60ch;
  margin: 0 auto var(--space-6);
}
.mat-close__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .mat-hero__inner { grid-template-columns: 1fr; }
  .mat-hero__symbol { font-size: 5rem; padding-right: 0; padding-bottom: var(--space-4); border-right: 0; border-bottom: 1px solid var(--color-line-strong); }
  .mat-narrative__inner { grid-template-columns: 1fr; gap: var(--space-4); }
}

.mat-section__label {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.mat-section__label .accent { color: var(--color-accent); font-weight: 700; }
.mat-section__label span:last-child { color: var(--color-text-muted); }

/* Also style .mat-proc-list, .mat-qc__list etc if referenced */
.mat-proc-grid, .mat-qc {
  display: grid;
  gap: var(--space-6);
}
.mat-proc-grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.mat-qc { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.mat-proc, .mat-qc__item {
  padding: var(--space-4);
  background: var(--color-surface);
  border-top: 2px solid var(--color-accent);
}
.mat-proc__title, .mat-qc__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9375rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.mat-proc__body, .mat-qc__body {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

.mat-hero__title-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-6);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}
.mat-hero__z {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 500;
}
/* Reset the earlier mat-hero__inner rule now that we have title-row structure */
.mat-hero__inner {
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
.mat-hero__symbol {
  font-size: 5rem;
  padding-right: 0;
  border-right: 0;
  line-height: 1;
}

/* Section (spec) block */
.mat-section {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-line);
}
.mat-section--surface { background: #060607; }
.mat-section__inner {
  max-width: var(--content);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-10);
}
.mat-section__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.875rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-divider);
}

/* Spec grid */
.mat-spec {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}
.mat-spec__row {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
}
.mat-spec__key {
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
}
.mat-spec__val {
  color: var(--color-text);
  font-weight: 500;
}

/* qc block also grid-based */
.mat-qc { grid-template-columns: 1fr; gap: 0; font-family: var(--font-mono); font-size: 0.8125rem; }
.mat-qc__row { display: grid; grid-template-columns: 1fr 1.4fr; gap: var(--space-4); padding: var(--space-3) 0; border-bottom: 1px solid var(--color-divider); }
.mat-qc__key { color: var(--color-text-muted); text-transform: uppercase; font-size: 0.6875rem; letter-spacing: 0.14em; }
.mat-qc__val { color: var(--color-text); font-weight: 500; }
.mat-qc__foot { margin-top: var(--space-4); padding-top: var(--space-4); border-top: 1px solid var(--color-divider); font-family: var(--font-body); color: var(--color-text-muted); font-size: 0.875rem; font-style: italic; }

/* proc */
.mat-proc-grid { grid-template-columns: 1fr; }
.mat-proc { display: grid; grid-template-columns: 200px 1fr; gap: var(--space-6); padding: var(--space-4) 0 var(--space-4) var(--space-4); border: 0; border-bottom: 1px solid var(--color-divider); border-left: 2px solid var(--color-accent); background: transparent; }
.mat-proc__method { font-family: var(--font-display); font-weight: 800; font-size: 0.875rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-accent); padding-left: 0; }
.mat-proc__note { font-family: var(--font-body); color: var(--color-text-muted); line-height: 1.55; }

@media (max-width: 900px) {
  .mat-section__inner { grid-template-columns: 1fr; gap: var(--space-4); }
  .mat-spec__row, .mat-qc__row { grid-template-columns: 1fr; gap: 4px; }
  .mat-proc { grid-template-columns: 1fr; gap: var(--space-2); }
}


/* ============================================================
   PAGE SECTIONS — depth, rhythm, and visual anchors
   Applies to /applications/* and any page-section usage
   ============================================================ */

/* Subtle alternating surface tint — every 2nd section slightly lighter */
.page-section:nth-of-type(even) {
  background: linear-gradient(180deg,
    var(--color-surface) 0%,
    var(--color-surface-2) 50%,
    var(--color-surface) 100%);
}
.page-section:nth-of-type(odd) {
  background:
    radial-gradient(ellipse at 15% 0%, rgba(255,255,255,0.025) 0%, transparent 50%),
    var(--color-bg);
}

/* Widen the ledger column and make the number the visual anchor */
.page-section__head {
  grid-template-columns: minmax(140px, 200px) 1fr;
  align-items: start;
  border-bottom: 1px solid var(--color-line-strong);
  padding-bottom: var(--space-8);
  position: relative;
}
.page-section__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg,
    var(--color-line-strong) 0%,
    var(--color-line) 60%,
    transparent 100%);
}

.page-section__ledger {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: var(--color-text-muted);
  text-transform: uppercase;
  padding: 0 0 0 var(--space-4);
  position: relative;
}
.page-section__ledger strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 4rem;
  line-height: 0.9;
  color: var(--color-text);
  margin: 0 0 var(--space-3) 0;
  background: linear-gradient(180deg, var(--color-text) 0%, var(--color-text-dim) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.page-section__body {
  padding-left: var(--space-4);
  border-left: 1px solid var(--color-line);
  max-width: 72ch;
  margin-left: 0;
}

/* Section title gets slightly warmer treatment */
.page-section__title {
  color: var(--color-text);
  padding-left: var(--space-4);
  border-left: 2px solid var(--color-text-dim);
}

/* ============================================================
   MATERIAL PAGES — depth, rhythm, and visual anchors
   Applies to /material/*
   ============================================================ */

/* Alternating tint on material sections */
.mat-section:nth-of-type(even) {
  background: linear-gradient(180deg,
    var(--color-surface) 0%,
    var(--color-surface-2) 50%,
    var(--color-surface) 100%);
}
.mat-section:nth-of-type(odd) {
  background:
    radial-gradient(ellipse at 85% 0%, rgba(255,255,255,0.025) 0%, transparent 55%),
    var(--color-bg);
}
/* mat-section--surface override remains valid — treat as explicit tint */
.mat-section--surface {
  background: var(--color-surface-2) !important;
}

/* Upgrade the label — big display number + label chip */
.mat-section__label {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  align-items: baseline;
  border-bottom: 1px solid var(--color-line-strong);
  padding-bottom: var(--space-5);
  margin-bottom: var(--space-8);
  position: relative;
}
.mat-section__label::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 2px;
  background: var(--color-text-muted);
}
.mat-section__label .accent {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.75rem;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--color-text) !important;
  background: linear-gradient(180deg, var(--color-text) 0%, var(--color-text-dim) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  padding-top: var(--space-3);
}
.mat-section__label > span:not(.accent) {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  color: var(--color-text-muted);
  align-self: end;
}

/* Section separator — soft double line */
.mat-section + .mat-section {
  border-top: 1px solid var(--color-line);
}
.page-section + .page-section {
  border-top: 1px solid var(--color-line);
}

@media (max-width: 900px) {
  .page-section__head { grid-template-columns: 1fr; gap: var(--space-4); }
  .page-section__ledger strong { font-size: 3rem; }
  .page-section__body { padding-left: 0; border-left: 0; }
  .page-section__title { padding-left: 0; border-left: 0; }
  .mat-section__label { grid-template-columns: 1fr; gap: var(--space-2); }
  .mat-section__label .accent { font-size: 2rem; }
}

/* ============================================================
   MOBILE NAVIGATION — Hamburger + Slide-in Drawer
   Auto-injected by app.js on all pages. Only visible ≤900px.
   ============================================================ */

.mnav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  padding: 0;
  margin-left: var(--space-3);
  background: transparent;
  border: 1px solid var(--color-line-strong);
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 0.2s;
}
.mnav-toggle:hover { border-color: var(--color-text); }
.mnav-toggle__bar {
  display: block;
  position: absolute;
  left: 10px;
  right: 10px;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.25s ease, opacity 0.15s ease, top 0.25s ease;
}
.mnav-toggle__bar:nth-child(1) { top: 14px; }
.mnav-toggle__bar:nth-child(2) { top: 21px; }
.mnav-toggle__bar:nth-child(3) { top: 28px; }
.mnav-toggle.is-active .mnav-toggle__bar:nth-child(1) { top: 21px; transform: rotate(45deg); }
.mnav-toggle.is-active .mnav-toggle__bar:nth-child(2) { opacity: 0; }
.mnav-toggle.is-active .mnav-toggle__bar:nth-child(3) { top: 21px; transform: rotate(-45deg); }

.mnav-drawer {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  visibility: hidden;
}
.mnav-drawer.is-open {
  pointer-events: auto;
  visibility: visible;
}
.mnav-drawer__scrim {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.mnav-drawer.is-open .mnav-drawer__scrim { opacity: 1; }

.mnav-drawer__panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(360px, 88vw);
  background: var(--color-bg);
  border-left: 1px solid var(--color-line-strong);
  padding: var(--space-6) var(--space-6) var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.22, 0.61, 0.36, 1);
  overflow-y: auto;
}
.mnav-drawer.is-open .mnav-drawer__panel { transform: translateX(0); }

.mnav-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-line);
}
.mnav-drawer__eyebrow {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.mnav-drawer__close {
  position: relative;
  width: 36px;
  height: 36px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-line-strong);
  cursor: pointer;
  transition: border-color 0.2s;
}
.mnav-drawer__close:hover { border-color: var(--color-text); }
.mnav-drawer__close span {
  position: absolute;
  top: 50%;
  left: 8px;
  right: 8px;
  height: 2px;
  background: var(--color-text);
  transform-origin: center;
}
.mnav-drawer__close span:nth-child(1) { transform: rotate(45deg); }
.mnav-drawer__close span:nth-child(2) { transform: rotate(-45deg); }

.mnav-drawer__nav {
  display: flex;
  flex-direction: column;
  gap: 0;
  flex-grow: 1;
}
.mnav-drawer__nav a {
  display: block;
  padding: var(--space-4) 0;
  color: var(--color-text);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--color-line);
  transition: color 0.2s, padding-left 0.2s;
}
.mnav-drawer__nav a:hover,
.mnav-drawer__nav a:focus-visible {
  color: var(--color-accent);
  padding-left: var(--space-2);
}

.mnav-drawer__cta {
  width: 100%;
  justify-content: center;
  margin-top: var(--space-4);
}

.mnav-drawer__foot {
  display: flex;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-line);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

/* Show hamburger only on mobile; hide desktop CTA/nav */
@media (max-width: 900px) {
  .mnav-toggle { display: block; }
  /* Hide the desktop header CTA on mobile — replaced by drawer CTA */
  .site-header__cta,
  .header-actions .btn--accent {
    display: none;
  }
  /* Tighten header padding on mobile */
  .site-header__inner {
    gap: var(--space-3);
  }
  /* Prevent brand wordmark overflow */
  .site-header__wordmark,
  .brand__wordmark {
    font-size: 0.75rem;
    letter-spacing: 0.06em;
  }
}

@media (min-width: 901px) {
  .mnav-toggle { display: none !important; }
  .mnav-drawer { display: none !important; }
}