/* ============================================================
   ANGEL PRECISION — Institutional Design System
   Dark-first. Cold steel. Absolute restraint.
   ============================================================ */

/* --- Design Tokens --- */
:root {
  /* Type Scale */
  --text-xs: clamp(0.6875rem, 0.65rem + 0.2vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.75rem + 0.3vw, 0.9375rem);
  --text-base: clamp(0.9375rem, 0.9rem + 0.2vw, 1.0625rem);
  --text-lg: clamp(1.0625rem, 0.95rem + 0.6vw, 1.375rem);
  --text-xl: clamp(1.375rem, 1.1rem + 1.1vw, 2rem);
  --text-2xl: clamp(1.75rem, 1rem + 2.3vw, 3rem);
  --text-3xl: clamp(2.25rem, 0.8rem + 3.6vw, 4.25rem);
  --text-hero: clamp(2.75rem, 0.4rem + 5.8vw, 6rem);

  /* 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;

  /* Radius */
  --radius-sm: 0.1875rem;
  --radius-md: 0.3125rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);

  /* Content Widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;

  /* Fonts */
  --font-display: 'Instrument Serif', 'Georgia', serif;
  --font-body: 'Switzer', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;
}

/* --- DARK MODE (Default) --- */
:root,
[data-theme='dark'] {
  --color-bg: #0a0a0b;
  --color-surface: #111113;
  --color-surface-2: #18181b;
  --color-surface-offset: #141416;
  --color-surface-dynamic: #1e1e22;
  --color-divider: #1f1f24;
  --color-border: #2a2a30;

  --color-text: #c8c8cc;
  --color-text-muted: #78787e;
  --color-text-faint: #4a4a50;
  --color-text-inverse: #0a0a0b;

  /* Ice Blue / Steel accent */
  --color-primary: #7fa8b8;
  --color-primary-hover: #9bbfcd;
  --color-primary-active: #5e8a9c;
  --color-primary-highlight: rgba(127, 168, 184, 0.08);

  --color-error: #b35a5a;
  --color-success: #5a9e6f;
  --color-warning: #b89a5a;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
}

/* --- LIGHT MODE --- */
[data-theme='light'] {
  --color-bg: #f4f3f0;
  --color-surface: #ffffff;
  --color-surface-2: #fafaf8;
  --color-surface-offset: #edece8;
  --color-surface-dynamic: #e5e4e0;
  --color-divider: #d8d7d3;
  --color-border: #c8c7c3;

  --color-text: #1a1a1d;
  --color-text-muted: #6b6b70;
  --color-text-faint: #a0a0a5;
  --color-text-inverse: #f4f3f0;

  --color-primary: #2d5f6e;
  --color-primary-hover: #1d4a58;
  --color-primary-active: #3a7a8c;
  --color-primary-highlight: rgba(45, 95, 110, 0.08);

  --color-error: #8c3a3a;
  --color-success: #3a7a4a;
  --color-warning: #8c7a3a;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --color-bg: #f4f3f0;
    --color-surface: #ffffff;
    --color-surface-2: #fafaf8;
    --color-surface-offset: #edece8;
    --color-surface-dynamic: #e5e4e0;
    --color-divider: #d8d7d3;
    --color-border: #c8c7c3;
    --color-text: #1a1a1d;
    --color-text-muted: #6b6b70;
    --color-text-faint: #a0a0a5;
    --color-text-inverse: #f4f3f0;
    --color-primary: #2d5f6e;
    --color-primary-hover: #1d4a58;
    --color-primary-active: #3a7a8c;
    --color-primary-highlight: rgba(45, 95, 110, 0.08);
    --color-error: #8c3a3a;
    --color-success: #3a7a4a;
    --color-warning: #8c7a3a;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  }
}

/* ============================================================
   GLOBAL STYLES
   ============================================================ */

body {
  font-feature-settings: 'ss01', 'ss02', 'cv01';
  letter-spacing: 0.01em;
}

/* --- Skip Link --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  z-index: 100;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
}
.skip-link:focus {
  top: var(--space-2);
}

/* --- Header / Nav --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow 0.3s var(--ease-out);
}
.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}
.logo-mark {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}
.logo-text {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
}
.nav-links a {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.nav-links a:hover {
  color: var(--color-text);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-primary-highlight);
}

.mobile-menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}

/* --- Sections --- */
.section {
  padding: clamp(var(--space-12), 6vw, var(--space-24)) var(--space-6);
}
.section-narrow {
  max-width: var(--content-default);
  margin: 0 auto;
}
.section-wide {
  max-width: var(--content-wide);
  margin: 0 auto;
}

/* --- Hero --- */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 30%, rgba(127, 168, 184, 0.04) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 70%, rgba(127, 168, 184, 0.02) 0%, transparent 70%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-divider) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-divider) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.3;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 0%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 var(--space-6);
  width: 100%;
}

.hero-eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  font-style: italic;
  color: var(--color-text);
  line-height: 1.0;
  margin-bottom: var(--space-8);
  max-width: 14ch;
}

.hero-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 52ch;
  line-height: 1.7;
  margin-bottom: var(--space-10);
}

.hero-cta-row {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition:
    background var(--transition-interactive),
    color var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
  cursor: pointer;
  white-space: nowrap;
}
.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
  border: 1px solid var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
  transform: translateY(-1px);
}

/* --- Credibility Strip --- */
.cred-strip {
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-6) var(--space-6);
}
.cred-strip-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  justify-content: center;
  gap: var(--space-10);
  flex-wrap: wrap;
}
.cred-item {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.cred-item::before {
  content: '';
  display: block;
  width: 4px;
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  opacity: 0.6;
}

/* --- Section Headers --- */
.section-label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  font-style: italic;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.section-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 60ch;
  line-height: 1.7;
}

/* --- Architecture / System Cards --- */
.arch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr));
  gap: var(--space-4);
  margin-top: var(--space-10);
}

.arch-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  transition: border-color var(--transition-interactive);
}
.arch-card:hover {
  border-color: var(--color-border);
}

.arch-card-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  opacity: 0.7;
}

.arch-card h3 {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.arch-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.arch-card ul {
  list-style: none;
  margin-top: var(--space-3);
}
.arch-card ul li {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding: var(--space-1) 0;
  padding-left: var(--space-4);
  position: relative;
}
.arch-card ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-text-faint);
}

/* --- Two Col Layout --- */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

/* --- Access Tiers --- */
.tiers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
  gap: var(--space-4);
  margin-top: var(--space-10);
}

.tier-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-interactive);
}
.tier-card:hover {
  border-color: var(--color-border);
}
.tier-card.featured {
  border-color: var(--color-primary);
  background: var(--color-surface-offset);
}

.tier-label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.tier-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  font-style: italic;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.tier-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-6);
  flex: 1;
}

.tier-features {
  list-style: none;
  margin-bottom: var(--space-6);
}
.tier-features li {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.tier-features li:last-child {
  border-bottom: none;
}
.tier-features li svg {
  width: 14px;
  height: 14px;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* --- Data Intelligence --- */
.data-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.data-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--color-divider);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: var(--space-10);
}

.data-metric {
  background: var(--color-bg);
  padding: var(--space-6);
  text-align: center;
}
.data-metric-value {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--space-1);
  font-variant-numeric: tabular-nums lining-nums;
}
.data-metric-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* --- Scarcity / Quote --- */
.scarcity {
  text-align: center;
  max-width: var(--content-narrow);
  margin: 0 auto;
}
.scarcity .section-title {
  margin-bottom: var(--space-6);
}

.quote-block {
  border-left: 2px solid var(--color-primary);
  padding-left: var(--space-6);
  margin: var(--space-10) 0;
}
.quote-block p {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text);
  line-height: 1.6;
}

/* --- About --- */
.about-content {
  max-width: 60ch;
}
.about-content p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-6);
}
.about-content p:first-of-type {
  font-size: var(--text-lg);
  color: var(--color-text);
}

/* --- Risk Disclosure --- */
.disclosure {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
}
.disclosure-content {
  max-width: 60ch;
}
.disclosure-content p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}
.disclosure-content ul {
  list-style: none;
  margin: var(--space-4) 0;
}
.disclosure-content ul li {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding: var(--space-1) 0;
  padding-left: var(--space-5);
  position: relative;
}
.disclosure-content ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-text-faint);
}

/* --- Apply Section --- */
.apply-section {
  text-align: center;
}
.apply-section .section-desc {
  margin: 0 auto var(--space-8);
}

/* --- FAQ --- */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(400px, 100%), 1fr));
  gap: var(--space-4);
  margin-top: var(--space-10);
}
.faq-item {
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
}
.faq-item h3 {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.faq-item p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding: var(--space-12) var(--space-6);
}
.footer-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-6);
}
.footer-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer-legal {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.footer-links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
}
.footer-links a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition-interactive);
}
.footer-links a:hover {
  color: var(--color-text-muted);
}

/* --- Divider line --- */
.divider {
  border: none;
  border-top: 1px solid var(--color-divider);
  margin: 0;
}

/* --- Scroll Animations (driven by IntersectionObserver in JS) --- */
.fade-in {
  opacity: 1;
}

/* --- Ticker Belt --- */
.ticker-belt {
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  overflow: hidden;
  background: var(--color-surface);
  position: relative;
}
.ticker-belt::before,
.ticker-belt::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  z-index: 2;
  pointer-events: none;
}
.ticker-belt::before {
  left: 0;
  background: linear-gradient(to right, var(--color-surface), transparent);
}
.ticker-belt::after {
  right: 0;
  background: linear-gradient(to left, var(--color-surface), transparent);
}
.ticker-track {
  display: flex;
  width: max-content;
  animation: ticker-scroll 40s linear infinite;
}
@keyframes ticker-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.ticker-group {
  display: flex;
  gap: 0;
  flex-shrink: 0;
}
.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  white-space: nowrap;
  border-right: 1px solid var(--color-divider);
}
.ticker-sym {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-text);
}
.ticker-price {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 300;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}
.ticker-chg {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}
.ticker-chg.up   { color: #5a9e6f; }
.ticker-chg.down { color: #c45c5c; }

@media (prefers-reduced-motion: reduce) {
  .ticker-track { animation: none; }
}

/* --- Hero Stagger Entrance --- */
.hero-stagger {
  /* Initial state set by JS; fallback visible */
  opacity: 1;
}

/* --- Card Hover Lift --- */
.arch-card {
  transition: border-color 180ms cubic-bezier(0.16,1,0.3,1),
              box-shadow 180ms cubic-bezier(0.16,1,0.3,1),
              transform 180ms cubic-bezier(0.16,1,0.3,1);
}
.arch-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 24px rgba(127,168,184,0.06);
  transform: translateY(-2px);
}

.tier-card {
  transition: border-color 180ms cubic-bezier(0.16,1,0.3,1),
              box-shadow 180ms cubic-bezier(0.16,1,0.3,1),
              transform 180ms cubic-bezier(0.16,1,0.3,1);
}
.tier-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 24px rgba(127,168,184,0.06);
  transform: translateY(-2px);
}

/* --- Horizontal Rule accent --- */
.rule-accent {
  width: 48px;
  height: 1px;
  background: var(--color-primary);
  opacity: 0.4;
  border: none;
  margin: var(--space-6) 0;
}

/* --- Process Flow --- */
.process-flow {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(220px, 100%), 1fr));
  gap: var(--space-1);
  margin-top: var(--space-10);
}
.process-step {
  background: var(--color-surface);
  padding: var(--space-6);
  position: relative;
}
.process-step:first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}
.process-step:last-child {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.process-step-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.process-step h3 {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.process-step p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================================
   MOBILE RESPONSIVE
   ============================================================ */

.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 49;
  background: oklch(from var(--color-bg) l c h / 0.97);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
}
.mobile-nav.active {
  display: flex;
}
.mobile-nav a {
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
  text-decoration: none;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .hero h1 {
    font-size: var(--text-3xl);
  }
  .two-col {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .data-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
  .arch-grid {
    grid-template-columns: 1fr;
  }
  .tiers-grid {
    grid-template-columns: 1fr;
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .cred-strip-inner {
    gap: var(--space-4);
    justify-content: flex-start;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .header-inner {
    padding: var(--space-3) var(--space-4);
  }
  .process-flow {
    grid-template-columns: 1fr;
  }
  .process-step:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
  }
  .process-step:last-child {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
  }
}

@media (max-width: 480px) {
  .data-metrics {
    grid-template-columns: 1fr;
  }
}