/* ==========================================================================
   HEADER / NAV
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(6, 8, 12, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-border-hairline);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 14px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-brand img {
  height: 34px;
  width: 34px;
  object-fit: cover;
  border-radius: 50%;
}
.nav-brand-text {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: #fff;
  line-height: 1.1;
}
.nav-brand-text span {
  display: block;
  font-family: var(--f-mono);
  font-weight: 400;
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--c-text-faint);
  text-transform: uppercase;
  margin-top: 2px;
}
.nav-links {
  display: none;
  align-items: center;
  gap: 2px;
}
.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--c-text-dim);
  padding: 8px 13px;
  border-radius: var(--radius-sm);
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-links a:hover { color: var(--c-text); background: var(--c-surface-2); }
.nav-links a[aria-current="page"] { color: var(--c-accent); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-actions .btn-ghost { display: none; }
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-sm);
  color: var(--c-text);
  cursor: pointer;
}
.nav-toggle svg { width: 18px; height: 18px; }

.mobile-menu {
  display: none;
  flex-direction: column;
  border-top: 1px solid var(--c-border-hairline);
  background: var(--c-bg);
}
.mobile-menu.is-open { display: flex; }
.mobile-menu a {
  padding: 14px var(--gutter);
  border-bottom: 1px solid var(--c-border-hairline);
  color: var(--c-text-dim);
  font-size: 0.95rem;
  font-weight: 500;
}
.mobile-menu a[aria-current="page"] { color: var(--c-accent); }
.mobile-menu-cta { padding: 16px var(--gutter) 20px; }

@media (min-width: 980px) {
  .nav-links { display: flex; }
  .nav-actions .btn-ghost { display: inline-flex; }
  .nav-toggle { display: none; }
  .mobile-menu { display: none !important; }
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  position: relative;
  padding-block: clamp(64px, 8vw, 120px) clamp(56px, 6vw, 96px);
  overflow: hidden;
  border-bottom: 1px solid var(--c-border-hairline);
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 48px;
}
.hero-kicker { margin-bottom: 22px; }
.hero h1 { max-width: 15ch; }
.hero-sub {
  margin-top: 22px;
  font-size: var(--fs-body-lg);
  color: var(--c-text-dim);
  max-width: 46ch;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}
.hero-meta {
  margin-top: 48px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-hero {
  padding-block: clamp(52px, 6vw, 88px) clamp(40px, 5vw, 64px);
}
.page-hero .eyebrow { margin-bottom: 18px; }
.page-hero h1 { max-width: 20ch; }
.page-hero .hero-sub { max-width: 58ch; }

/* ==========================================================================
   SECTION HEADER
   ========================================================================== */
.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head .eyebrow { margin-bottom: 16px; }
.section-head p { margin-top: 16px; font-size: var(--fs-body-lg); }
.section-head--center { margin-inline: auto; text-align: center; }

/* ==========================================================================
   PILLAR / PRODUCT CARDS
   ========================================================================== */
.pillar-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) { .pillar-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .pillar-grid--four { grid-template-columns: repeat(4, 1fr); } }

.pillar-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color var(--dur) var(--ease);
}
.pillar-card:hover { border-color: var(--c-border-strong); }
.pillar-card-index {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--c-text-faint);
  letter-spacing: 0.08em;
}
.pillar-card h3 { font-size: 1.3rem; }
.pillar-card p { font-size: 0.95rem; }
.pillar-card .status { align-self: flex-start; }
.pillar-card-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--c-accent);
  padding-top: 8px;
}
.pillar-card--violet:hover { border-color: var(--c-violet-border); }

/* ==========================================================================
   WORKFLOW / STEP DIAGRAM
   (Used for literal sequential processes: DISCOVER→MONITOR, OBSERVE→RECORD)
   ========================================================================== */
.workflow {
  display: grid;
  gap: 1px;
  background: var(--c-border-hairline);
  border: 1px solid var(--c-border-hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
  grid-template-columns: 1fr;
}
@media (min-width: 760px) {
  .workflow { grid-template-columns: repeat(var(--wf-cols, 3), 1fr); }
}
.workflow-step {
  background: var(--c-surface);
  padding: 26px 22px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.workflow-step-num {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--c-accent);
  letter-spacing: 0.08em;
}
.workflow--violet .workflow-step-num { color: var(--c-violet); }
.workflow-step h4 {
  font-family: var(--f-mono);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
  font-weight: 500;
}
.workflow-step p { font-size: 0.88rem; }
.workflow-step:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -1px; top: 50%;
  transform: translateY(-50%);
  width: 8px; height: 8px;
  border-top: 1px solid var(--c-border-strong);
  border-right: 1px solid var(--c-border-strong);
  rotate: 45deg;
  background: var(--c-surface);
  display: none;
}
@media (min-width: 760px) {
  .workflow-step:not(:last-child)::after { display: block; }
}

/* ==========================================================================
   ARCHITECTURE DIAGRAM (vertical flow — PhaseLock / PQC pipeline)
   ========================================================================== */
.arch-diagram {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  max-width: 560px;
}
.arch-node {
  border: 1px solid var(--c-border-strong);
  background: var(--c-surface);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.arch-node strong {
  font-family: var(--f-mono);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--c-text);
  font-weight: 500;
  text-transform: uppercase;
}
.arch-node span { font-size: 0.82rem; color: var(--c-text-faint); }
.arch-node--accent { border-color: var(--c-accent-border); }
.arch-node--accent strong { color: var(--c-accent); }
.arch-node--violet { border-color: var(--c-violet-border); }
.arch-node--violet strong { color: var(--c-violet); }
.arch-connector {
  width: 1px;
  height: 26px;
  background: linear-gradient(var(--c-border-strong), var(--c-border-strong));
  margin-inline: 24px;
  position: relative;
}
.arch-connector::after {
  content: "";
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--c-border-strong);
}
.arch-diagram-label {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-faint);
  text-align: right;
  margin-top: 14px;
}

/* ==========================================================================
   METRIC / VALIDATION CARDS
   ========================================================================== */
.metric-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .metric-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px) { .metric-grid { grid-template-columns: repeat(3, 1fr); } }
.metric-card {
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: 22px;
  background: var(--c-surface);
}
.metric-card h4 {
  font-family: var(--f-mono);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--c-text);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.metric-card p { margin-top: 8px; font-size: 0.86rem; }

/* ==========================================================================
   INDUSTRY / TABLE ROWS
   ========================================================================== */
.industry-list { display: flex; flex-direction: column; }
.industry-row {
  display: grid;
  gap: 6px;
  padding-block: 26px;
  border-bottom: 1px solid var(--c-border-hairline);
  grid-template-columns: 1fr;
}
.industry-row:first-child { border-top: 1px solid var(--c-border-hairline); }
@media (min-width: 860px) {
  .industry-row { grid-template-columns: 1fr 1.3fr 1.3fr 1.3fr; gap: 24px; align-items: start; }
}
.industry-name {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: #fff;
}
.industry-col-label {
  font-family: var(--f-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text-faint);
  margin-bottom: 6px;
  display: block;
}
@media (min-width: 860px) { .industry-col-label { display: none; } }
.industry-row p { font-size: 0.9rem; }

/* ==========================================================================
   EVIDENCE PHILOSOPHY STRIP
   ========================================================================== */
.evidence-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.evidence-step {
  flex: 1 1 140px;
  padding: 20px 18px;
  border-right: 1px solid var(--c-border-hairline);
  font-family: var(--f-mono);
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  color: var(--c-text-dim);
  text-align: center;
}
.evidence-step:last-child { border-right: none; color: var(--c-accent); }

/* ==========================================================================
   CTA BAND
   ========================================================================== */
.cta-band {
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  padding: clamp(32px, 5vw, 56px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: linear-gradient(150deg, var(--c-surface) 0%, var(--c-bg-alt) 100%);
}
.cta-band h3 { max-width: 26ch; }
.cta-band-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ==========================================================================
   FORM
   ========================================================================== */
.form-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}
@media (min-width: 680px) { .form-grid { grid-template-columns: 1fr 1fr; } }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--c-text);
}
.field label .req { color: var(--c-accent); }
.field input,
.field select,
.field textarea {
  background: var(--c-surface);
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--c-text);
  font-family: var(--f-body);
  font-size: 0.95rem;
  width: 100%;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid var(--c-accent);
  outline-offset: 1px;
  border-color: var(--c-accent);
}
.field textarea { resize: vertical; min-height: 120px; }
.field-hint { font-size: 0.78rem; color: var(--c-text-faint); }
.form-note {
  margin-top: 22px;
  font-size: 0.82rem;
  color: var(--c-text-faint);
}
.form-status {
  margin-top: 18px;
  font-size: 0.88rem;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-accent-border);
  color: var(--c-accent);
  display: none;
}
.form-status.is-visible { display: block; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--c-border-hairline);
  padding-block: 64px 32px;
  background: var(--c-bg-alt);
}
.footer-top {
  display: grid;
  gap: 40px;
  grid-template-columns: 1fr;
  padding-bottom: 48px;
}
@media (min-width: 780px) {
  .footer-top { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
}
.footer-brand { display: flex; align-items: flex-start; gap: 12px; }
.footer-brand img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.footer-brand-name { font-family: var(--f-display); font-weight: 700; color: #fff; font-size: 1.05rem; }
.footer-brand-desc { margin-top: 10px; font-size: 0.88rem; max-width: 34ch; color: var(--c-text-faint); }
.footer-col h5 {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-faint);
  margin-bottom: 16px;
}
.footer-col ul li + li { margin-top: 11px; }
.footer-col a { font-size: 0.9rem; color: var(--c-text-dim); }
.footer-col a:hover { color: var(--c-accent); }
.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid var(--c-border-hairline);
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
}
.footer-bottom p { font-size: 0.8rem; color: var(--c-text-faint); }
.footer-legal { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-legal a { font-size: 0.8rem; color: var(--c-text-faint); }
.footer-legal a:hover { color: var(--c-text-dim); }

/* ==========================================================================
   BREADCRUMB TRAIL (About page journey ribbon etc.)
   ========================================================================== */
.trail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: 0.78rem;
  color: var(--c-text-faint);
}
.trail span.sep { color: var(--c-border-strong); }
.trail strong { color: var(--c-text-dim); font-weight: 500; }

/* ==========================================================================
   DISCLAIMER CALLOUT
   ========================================================================== */
.callout {
  border-left: 2px solid var(--c-amber-border);
  background: var(--c-amber-soft);
  padding: 18px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.9rem;
  color: var(--c-text-dim);
}
.callout strong { color: var(--c-amber); }

/* utility */
.mt-0 { margin-top: 0 !important; }