/* =============================================================================
   Arclave — Decision Assurance
   styles.css — the entire design system (Phase R of the BRIDGES Method)
   All design tokens live in the single :root block below. No design value is
   hard-coded twice; every downstream color, font, and spacing value traces to
   a token here. Deliberate exceptions are noted inline.
   ========================================================================== */

:root {
  /* --- Color: brand structure --- */
  --navy:        #15233B;   /* primary brand — the arch / structure */
  --deep:        #0E1726;   /* dark surfaces, footer, deep sections */
  --gold:        #C0913C;   /* the keystone — accent, never structure */
  --gold-bright: #D8A94A;   /* gold on dark backgrounds */
  --blue:        #2F6FE0;   /* digital accent, used sparingly */

  /* --- Color: surface + ink --- */
  --paper:       #F6F7FA;   /* light section background */
  --white:       #FFFFFF;
  --off:         #EEF1F6;   /* off-white — reversed mark on dark, soft panels */
  --ink:         #15233B;   /* body text on light (== navy) */
  --muted:       #5B6678;   /* secondary text on light */
  --line:        #DDE2EC;   /* hairlines on light */

  /* --- Color: derived (computed from brand tokens) --- */
  --navy-90:     rgba(21, 35, 59, 0.90);
  --navy-08:     rgba(21, 35, 59, 0.08);
  --navy-04:     rgba(21, 35, 59, 0.04);
  --gold-14:     rgba(192, 145, 60, 0.14);
  --gold-30:     rgba(192, 145, 60, 0.30);
  --ink-on-dark: #EEF1F6;   /* body text on dark surfaces */
  --muted-on-dark: #9AA6BC; /* secondary text on dark surfaces */
  --line-on-dark: rgba(238, 241, 246, 0.16);

  /* --- Type --- */
  --font-sans:  "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Fluid type scale — clamp(min, preferred, max) */
  --fs-overline: 0.78rem;
  --fs-small:    clamp(0.84rem, 0.80rem + 0.20vw, 0.94rem);
  --fs-body:     clamp(1rem, 0.96rem + 0.22vw, 1.12rem);
  --fs-lead:     clamp(1.18rem, 1.08rem + 0.50vw, 1.42rem);
  --fs-h4:       clamp(1.12rem, 1.02rem + 0.50vw, 1.34rem);
  --fs-h3:       clamp(1.32rem, 1.14rem + 0.90vw, 1.78rem);
  --fs-h2:       clamp(1.72rem, 1.40rem + 1.60vw, 2.62rem);
  --fs-h1:       clamp(2.30rem, 1.74rem + 2.80vw, 3.92rem);
  --fs-display:  clamp(2.62rem, 1.90rem + 3.60vw, 4.60rem);

  /* Weights */
  --fw-regular: 400;
  --fw-medium:  500;
  --fw-semibold: 600;
  --fw-bold:    700;

  /* Line heights */
  --lh-tight:   1.12;
  --lh-snug:    1.28;
  --lh-body:    1.62;

  /* Tracking */
  --track-wordmark: 0.18em;
  --track-overline: 0.16em;

  /* --- Rhythm / layout --- */
  --container:   1140px;
  --container-narrow: 760px;
  --radius-sm:   6px;
  --radius:      12px;
  --radius-lg:   18px;
  --radius-pill: 999px;

  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4rem;
  --section-pad: clamp(64px, 9vw, 124px);
  --gutter: clamp(20px, 5vw, 40px);

  /* --- Shadow --- */
  --shadow-card: 0 1px 2px rgba(14, 23, 38, 0.05), 0 10px 30px rgba(14, 23, 38, 0.07);
  --shadow-lift: 0 2px 4px rgba(14, 23, 38, 0.08), 0 20px 48px rgba(14, 23, 38, 0.16);

  /* --- Motion --- */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur:  0.55s;
}

/* =============================================================================
   Reset + base
   ========================================================================== */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-body);
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 {
  font-weight: var(--fw-semibold);
  line-height: var(--lh-tight);
  color: var(--navy);
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); line-height: var(--lh-snug); }
h4 { font-size: var(--fs-h4); line-height: var(--lh-snug); }

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

strong { font-weight: var(--fw-semibold); color: var(--navy); }
em { font-style: italic; }

ul, ol { margin: 0 0 1rem; padding-left: 1.25rem; }
li { margin: 0.3rem 0; }

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: var(--space-5) 0;
}

/* Visible focus — accessibility gate */
:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 2px;
  border-radius: 3px;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--navy);
  color: var(--off);
  padding: 12px 18px;
  border-radius: 0 0 var(--radius-sm) 0;
  font-weight: var(--fw-semibold);
}
.skip-link:focus { left: 0; text-decoration: none; }

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

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

.section { padding-block: var(--section-pad); }
.section.tight { padding-block: clamp(40px, 6vw, 72px); }

.section--paper { background: var(--paper); }
.section--off   { background: var(--off); }
.section--navy  { background: var(--navy); color: var(--ink-on-dark); }
.section--deep  { background: var(--deep); color: var(--ink-on-dark); }

/* Dark-section text colors */
.section--navy h1, .section--navy h2, .section--navy h3, .section--navy h4,
.section--deep h1, .section--deep h2, .section--deep h3, .section--deep h4 { color: var(--white); }
.section--navy .overline, .section--deep .overline { color: var(--gold-bright); }
.section--navy p, .section--deep p { color: var(--ink-on-dark); }
.section--navy .muted, .section--deep .muted { color: var(--muted-on-dark); }
.section--navy strong, .section--deep strong, .hero strong, .on-dark strong { color: var(--gold-bright); }

/* =============================================================================
   Typographic components
   ========================================================================== */

.overline {
  display: inline-block;
  font-size: var(--fs-overline);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--track-overline);
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 var(--space-3);
}
.overline--gold { color: var(--gold); }

.lead {
  font-size: var(--fs-lead);
  line-height: 1.5;
  color: var(--muted);
}
.section--navy .lead, .section--deep .lead { color: var(--off); }

.muted { color: var(--muted); }

.measure { max-width: 64ch; }
.measure-tight { max-width: 52ch; }

.center { text-align: center; }
.center .overline { display: block; }
.center .measure, .center .measure-tight { margin-inline: auto; }

/* Gold rule — a signature device */
.gold-rule {
  width: 56px;
  height: 3px;
  background: var(--gold);
  border-radius: 2px;
  margin: 0 0 var(--space-4);
}
.center .gold-rule { margin-inline: auto; }

/* Eyebrow kicker with flanking dot */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  font-size: var(--fs-overline);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--track-overline);
  text-transform: uppercase;
  color: var(--gold);
}
.kicker::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

/* =============================================================================
   Header + navigation  (byte-identical across every page)
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy-90);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line-on-dark);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 68px;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  flex: 0 0 auto;
}
.brand-lockup:hover { text-decoration: none; }
.brand-lockup .mark { width: 34px; height: 34px; }
.brand-lockup .wordmark {
  font-size: 1.16rem;
  font-weight: var(--fw-semibold);
  letter-spacing: var(--track-wordmark);
  color: var(--white);
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1.4vw, 1.4rem);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  display: inline-block;
  padding: 0.5rem 0.25rem;
  font-size: 0.95rem;
  font-weight: var(--fw-medium);
  color: var(--off);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.nav-links a:hover { color: var(--white); text-decoration: none; border-bottom-color: var(--gold-30); }
.nav-links a[aria-current="page"] { color: var(--white); border-bottom-color: var(--gold); }

.nav-cta { flex: 0 0 auto; }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 1px solid var(--line-on-dark);
  border-radius: var(--radius-sm);
  width: 44px; height: 40px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--off);
}
.nav-toggle svg { width: 22px; height: 22px; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

@media (max-width: 880px) {
  .nav-toggle { display: inline-flex; }
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: var(--navy);
    border-bottom: 1px solid var(--line-on-dark);
    /* No-JS default: menu visible (progressive enhancement) */
    display: block;
    padding: var(--space-3) var(--gutter) var(--space-5);
  }
  /* When JS is on, the menu is collapsed until toggled */
  .js .nav-menu { display: none; }
  .js .nav-menu.is-open { display: block; }
  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav-links a {
    padding: 0.85rem 0.25rem;
    border-bottom: 1px solid var(--line-on-dark);
  }
  .nav-links a[aria-current="page"] { border-bottom-color: var(--gold); }
  .nav-menu .nav-cta { margin-top: var(--space-3); }
  .nav-menu .btn { width: 100%; }
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.78rem 1.4rem;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: var(--fw-semibold);
  line-height: 1;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s var(--ease), background-color 0.2s var(--ease),
              border-color 0.2s var(--ease), color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

/* Primary — gold keystone, navy ink */
.btn-primary { background: var(--gold); color: var(--navy); border-color: var(--gold); }
.btn-primary:hover { background: var(--gold-bright); border-color: var(--gold-bright); box-shadow: var(--shadow-card); }

/* Secondary — outline on light */
.btn-secondary { background: transparent; color: var(--navy); border-color: var(--line); }
.btn-secondary:hover { border-color: var(--navy); background: var(--navy-04); }

/* On dark surfaces */
.hero .btn-secondary, .on-dark .btn-secondary, .section--navy .btn-secondary, .section--deep .btn-secondary {
  color: var(--off); border-color: var(--line-on-dark);
}
.hero .btn-secondary:hover, .on-dark .btn-secondary:hover, .section--navy .btn-secondary:hover, .section--deep .btn-secondary:hover {
  border-color: var(--off); background: rgba(238,241,246,0.08);
}

.btn-lg { padding: 0.95rem 1.7rem; font-size: 1.05rem; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}
.center .btn-row { justify-content: center; }

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

.hero {
  position: relative;
  background:
    radial-gradient(1200px 600px at 78% -10%, rgba(47,111,224,0.18), transparent 60%),
    radial-gradient(900px 500px at 0% 110%, rgba(192,145,60,0.12), transparent 55%),
    var(--navy);
  color: var(--off);
  overflow: hidden;
}
.hero .container { position: relative; z-index: 1; }
.hero-inner { padding-block: clamp(56px, 9vw, 116px); max-width: 50rem; }
.hero h1 { color: var(--white); font-size: var(--fs-display); letter-spacing: -0.02em; }
.hero .hero-statement {
  font-size: clamp(1.18rem, 1.0rem + 0.9vw, 1.62rem);
  font-weight: var(--fw-regular);
  line-height: 1.42;
  color: var(--off);
  max-width: 44ch;
}
.hero .hero-statement strong { color: var(--gold-bright); font-weight: var(--fw-semibold); }
.hero .lead { color: var(--off); }

/* Faint arch motif behind the hero */
.hero-arch {
  position: absolute;
  right: clamp(-120px, -6vw, -40px);
  bottom: -8%;
  width: clamp(320px, 42vw, 620px);
  opacity: 0.10;
  z-index: 0;
  pointer-events: none;
}
@media (max-width: 700px) { .hero-arch { opacity: 0.07; } }

/* =============================================================================
   Cards + grids
   ========================================================================== */

.grid { display: grid; gap: var(--space-4); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
}
.card h3 { font-size: var(--fs-h4); }
.card .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  background: var(--gold-14);
  color: var(--gold);
  font-weight: var(--fw-bold);
  font-size: 1.05rem;
  margin-bottom: var(--space-3);
}
.card .card-icon { width: 40px; height: 40px; margin-bottom: var(--space-3); }

/* Card on dark surfaces */
.section--navy .card, .section--deep .card {
  background: rgba(238, 241, 246, 0.05);
  border-color: var(--line-on-dark);
  box-shadow: none;
}
.section--navy .card p, .section--deep .card p { color: var(--off); }

/* Pillar card — gold top rule */
.card--pillar { border-top: 3px solid var(--gold); }

/* Feature row (icon + text) */
.feature {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}
.feature .feature-mark { flex: 0 0 auto; width: 30px; height: 30px; margin-top: 2px; }

/* =============================================================================
   Paradigm "from -> to" table
   ========================================================================== */

.paradigm {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-4);
  font-size: var(--fs-small);
}
.paradigm caption { text-align: left; color: var(--muted); margin-bottom: var(--space-2); }
.paradigm th, .paradigm td {
  text-align: left;
  padding: 0.85rem 1rem;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}
.paradigm thead th {
  font-size: var(--fs-overline);
  letter-spacing: var(--track-overline);
  text-transform: uppercase;
  color: var(--muted);
  font-weight: var(--fw-semibold);
}
.paradigm tbody td:first-child { color: var(--muted); }
.paradigm tbody td:last-child { color: var(--navy); font-weight: var(--fw-medium); }
.paradigm .arrow { color: var(--gold); font-weight: var(--fw-bold); }

/* Dark variant */
.section--navy .paradigm th, .section--deep .paradigm th,
.section--navy .paradigm td, .section--deep .paradigm td { border-bottom-color: var(--line-on-dark); }
.section--navy .paradigm thead th, .section--deep .paradigm thead th { color: var(--muted-on-dark); }
.section--navy .paradigm tbody td:first-child, .section--deep .paradigm tbody td:first-child { color: var(--muted-on-dark); }
.section--navy .paradigm tbody td:last-child, .section--deep .paradigm tbody td:last-child { color: var(--white); }

/* Comparison table (generic, bordered) */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.dtable {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-4);
  font-size: var(--fs-small);
  min-width: 540px;
}
.dtable th, .dtable td {
  text-align: left;
  padding: 0.8rem 1rem;
  border: 1px solid var(--line);
  vertical-align: top;
}
.dtable thead th {
  background: var(--paper);
  font-weight: var(--fw-semibold);
  color: var(--navy);
}
.dtable tbody th { background: var(--navy-04); font-weight: var(--fw-semibold); }

/* DAL level chips */
.dal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.6em;
  padding: 0.18em 0.55em;
  border-radius: var(--radius-sm);
  font-weight: var(--fw-bold);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}
.dal-a { background: #4A1D24; color: #FBDCE0; }
.dal-b { background: #5A3416; color: #FBE3C8; }
.dal-c { background: var(--gold-14); color: var(--gold); }
.dal-d { background: rgba(47,111,224,0.14); color: var(--blue); }
.dal-e { background: rgba(16,176,128,0.14); color: #0E8A66; }

/* =============================================================================
   Definition list (quiet, document-style)
   ========================================================================== */

.deflist { margin: 0; }
.deflist > div {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--line);
}
.deflist dt { font-weight: var(--fw-semibold); color: var(--navy); }
.deflist dd { margin: 0; color: var(--muted); }
@media (max-width: 620px) {
  .deflist > div { grid-template-columns: 1fr; gap: var(--space-1); }
}

/* =============================================================================
   Callout / quote / banner
   ========================================================================== */

.callout {
  border-left: 3px solid var(--gold);
  background: var(--paper);
  padding: var(--space-4) var(--space-5);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.callout p:last-child { margin-bottom: 0; }

.pullquote {
  font-size: var(--fs-h3);
  font-weight: var(--fw-medium);
  line-height: 1.32;
  color: var(--navy);
  letter-spacing: -0.01em;
}
.section--navy .pullquote, .section--deep .pullquote { color: var(--white); }
.pullquote cite { display: block; margin-top: var(--space-3); font-size: var(--fs-small); font-style: normal; color: var(--muted); }
.section--navy .pullquote cite, .section--deep .pullquote cite { color: var(--muted-on-dark); }

/* CTA band */
.cta-band { text-align: center; }
.cta-band h2 { color: var(--white); }
.cta-band .lead { color: var(--off); margin-inline: auto; max-width: 52ch; }

/* =============================================================================
   Tags / badges / notices
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  padding: 0.34em 0.8em;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.02em;
  background: var(--gold-14);
  color: var(--gold);
}
.section--navy .badge, .section--deep .badge { background: rgba(216,169,74,0.18); color: var(--gold-bright); }
.badge--blue { background: rgba(47,111,224,0.12); color: var(--blue); }

/* Provisional / placeholder notice (honest pre-launch state) */
.notice {
  border: 1px dashed var(--gold-30);
  background: var(--gold-14);
  border-radius: var(--radius);
  padding: var(--space-4);
  font-size: var(--fs-small);
  color: var(--navy);
}
.notice strong { color: var(--gold); }

/* =============================================================================
   Steps / numbered process
   ========================================================================== */

.steps { list-style: none; margin: 0; padding: 0; counter-reset: step; }
.steps > li {
  position: relative;
  padding-left: 3.4rem;
  margin: 0 0 var(--space-4);
  counter-increment: step;
}
.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0; top: 0;
  width: 2.4rem; height: 2.4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--navy);
  color: var(--gold-bright);
  font-weight: var(--fw-bold);
}
.steps h4 { margin-bottom: 0.25rem; }

/* =============================================================================
   Footer  (byte-identical across every page)
   ========================================================================== */

.site-footer {
  background: var(--deep);
  color: var(--muted-on-dark);
  padding-block: var(--space-7) var(--space-5);
  font-size: var(--fs-small);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: var(--space-5);
}
@media (max-width: 880px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-brand .brand-lockup { margin-bottom: var(--space-3); }
.footer-brand .wordmark { color: var(--white); }
.footer-brand p { color: var(--muted-on-dark); max-width: 34ch; }

.footer-col h3 {
  font-size: var(--fs-overline);
  letter-spacing: var(--track-overline);
  text-transform: uppercase;
  color: var(--off);
  margin-bottom: var(--space-3);
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin: 0.45rem 0; }
.footer-col a { color: var(--muted-on-dark); text-decoration: none; }
.footer-col a:hover { color: var(--white); text-decoration: underline; }

.footer-base {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--line-on-dark);
  color: var(--muted-on-dark);
}
.footer-base p { margin: 0; }

/* =============================================================================
   Misc: stat, logo strip placeholder, verb register
   ========================================================================== */

.stat { }
.stat .stat-num {
  display: block;
  font-size: clamp(2rem, 1.4rem + 2.4vw, 3rem);
  font-weight: var(--fw-bold);
  color: var(--navy);
  line-height: 1;
  letter-spacing: -0.02em;
}
.section--navy .stat .stat-num, .section--deep .stat .stat-num { color: var(--gold-bright); }
.stat .stat-label { color: var(--muted); font-size: var(--fs-small); }

.verb-register {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.6rem var(--space-3);
}
.verb-register .verb { font-size: var(--fs-h2); font-weight: var(--fw-semibold); color: var(--navy); letter-spacing: -0.01em; }
.section--navy .verb-register .verb, .section--deep .verb-register .verb { color: var(--white); }
.verb-register .pron { color: var(--muted); font-size: var(--fs-small); }

/* Two-column prose/media split */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-5), 5vw, var(--space-7));
  align-items: center;
}
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

.media-tile {
  background: var(--navy);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lift);
}
.media-tile svg { width: min(280px, 70%); height: auto; }

/* Bio portrait placeholder */
.portrait {
  aspect-ratio: 1 / 1;
  background: linear-gradient(135deg, var(--navy), var(--deep));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lift);
}
.portrait svg { width: 48%; height: auto; opacity: 0.92; }

/* Book cover frame */
.book-cover {
  aspect-ratio: 5 / 8;
  max-width: 360px;
  background: linear-gradient(160deg, var(--navy), var(--deep));
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: var(--off);
  border: 1px solid var(--line-on-dark);
}
.book-cover .bc-mark { width: 56px; height: 56px; }
.book-cover .bc-title { font-size: clamp(1.4rem, 1.1rem + 1.4vw, 2rem); font-weight: var(--fw-bold); color: var(--white); line-height: 1.1; letter-spacing: -0.01em; }
.book-cover .bc-sub { font-size: var(--fs-small); color: var(--gold-bright); }
.book-cover .bc-author { font-size: var(--fs-small); color: var(--off); border-top: 1px solid var(--line-on-dark); padding-top: var(--space-2); }

/* =============================================================================
   Scroll-reveal — no-JavaScript-safe (SOP Section 12.6)
   No-JS / pre-JS default: VISIBLE. Only .js documents hide-then-reveal.
   ========================================================================== */

.reveal { opacity: 1; transform: none; }
.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  will-change: opacity, transform;
}
.js .reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

/* Stagger helper */
.js .reveal.delay-1 { transition-delay: 0.08s; }
.js .reveal.delay-2 { transition-delay: 0.16s; }
.js .reveal.delay-3 { transition-delay: 0.24s; }

/* =============================================================================
   Utilities
   ========================================================================== */

.mt-0 { margin-top: 0; }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mb-0 { margin-bottom: 0; }
.flow > * + * { margin-top: var(--space-3); }
.flow-lg > * + * { margin-top: var(--space-5); }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}