/* ──────────────────────────────────────────────────────────────────
   StratAI marketing site — Monochrome (black / white / grey)
   No accent colour. Motion is the interaction language.
   ────────────────────────────────────────────────────────────────── */

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

:root {
  /* Surfaces */
  --bg:            #0a0a0a;
  --bg-elev-1:     rgba(255, 255, 255, 0.025);
  --bg-elev-2:     rgba(255, 255, 255, 0.045);
  --bg-elev-hover: rgba(255, 255, 255, 0.07);

  /* Text */
  --text:           rgba(255, 255, 255, 0.96);
  --text-secondary: rgba(255, 255, 255, 0.62);
  --text-muted:     rgba(255, 255, 255, 0.52); /* 5.7:1 on --bg (AA) */
  --text-faint:     rgba(255, 255, 255, 0.46); /* 4.7:1 on --bg (AA) */

  /* Lines */
  --line:        rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.18);

  /* Inverse (for primary buttons) */
  --on-white:    #0a0a0a;

  /* Type */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'SF Mono', 'JetBrains Mono', ui-monospace, Menlo, Monaco, Consolas, monospace;

  /* Layout */
  --container: 1180px;
  --container-narrow: 980px;
  --space-section: 140px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  /* Motion */
  --focus-ring: rgba(255, 255, 255, 0.7);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 180ms;
  --dur-base: 280ms;
  --dur-slow: 600ms;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  background: var(--bg);
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-weight: 400;
  font-feature-settings: 'ss01', 'cv11';
  overflow-x: hidden;
}

/* Selection — soft white wash */
::selection { background: rgba(255, 255, 255, 0.18); color: #fff; }

/* Scrollbar — thin, monochrome */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.16); background-clip: padding-box; }

a { color: inherit; text-decoration: none; }

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ──────────────────────────────────────────────────────────────────
   NAV
   ────────────────────────────────────────────────────────────────── */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.6);
  backdrop-filter: saturate(140%) blur(18px);
  -webkit-backdrop-filter: saturate(140%) blur(18px);
  border-bottom: 1px solid transparent;
  transition: background var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.78);
  border-bottom-color: var(--line);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.wordmark {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  transition: opacity var(--dur-fast) var(--ease-out);
}
.wordmark:hover { opacity: 0.78; }

.nav-logo {
  height: 72px;
  width: auto;
  border-radius: 0;
  user-select: none;
  -webkit-user-select: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.nav-links a {
  font-size: 0.83rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.005em;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  transition: color var(--dur-fast) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out);
}

.nav-links a:hover {
  color: var(--text);
  background: var(--bg-elev-1);
}

.nav-agent-link {
  position: relative;
  color: var(--text) !important;
  font-weight: 500 !important;
  background: var(--bg-elev-1);
  border: 1px solid var(--line);
}

.nav-agent-link:hover {
  background: var(--bg-elev-hover) !important;
  border-color: var(--line-strong);
}

body.show-agent .nav-agent-link {
  background: #fff;
  color: var(--on-white) !important;
  border-color: #fff;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  /* 44x44 touch target; negative margin keeps the visual footprint compact */
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  margin: -10px -5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle:hover { background: var(--bg-elev-1); }

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease-out);
}

/* ──────────────────────────────────────────────────────────────────
   BUTTONS — single system, used by both home and agent pages
   ────────────────────────────────────────────────────────────────── */

.agent-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: -0.005em;
  padding: 13px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out),
              background-color var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
  white-space: nowrap;
  isolation: isolate;
  overflow: hidden;
}

.agent-btn:active { transform: translateY(1px); }

.agent-btn-arrow {
  display: inline-block;
  transition: transform var(--dur-base) var(--ease-out);
}
.agent-btn:hover .agent-btn-arrow { transform: translateX(3px); }

/* Primary — solid white pill, dark text. Shimmer on hover. */
.agent-btn-primary {
  background: #fff;
  color: var(--on-white);
  border-color: #fff;
  box-shadow: 0 1px 0 rgba(255,255,255,0.4) inset,
              0 8px 28px -12px rgba(255,255,255,0.25);
}
.agent-btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 35%, rgba(255,255,255,0.65) 50%, transparent 65%);
  transform: translateX(-120%);
  transition: transform 700ms var(--ease-out);
  z-index: -1;
  mix-blend-mode: overlay;
}
.agent-btn-primary:hover {
  background: #f4f4f4;
  box-shadow: 0 1px 0 rgba(255,255,255,0.5) inset,
              0 14px 40px -14px rgba(255,255,255,0.35);
}
.agent-btn-primary:hover::before { transform: translateX(120%); }

/* Ghost — transparent with light border */
.agent-btn-ghost,
.agent-btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}
.agent-btn-ghost:hover,
.agent-btn-outline:hover {
  background: var(--bg-elev-1);
  border-color: rgba(255,255,255,0.32);
}

.agent-btn-lg {
  font-size: 0.98rem;
  padding: 17px 32px;
}

/* ──────────────────────────────────────────────────────────────────
   SHARED — labels, dividers, scroll reveal, page switch
   ────────────────────────────────────────────────────────────────── */

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-muted);
  margin-bottom: 56px;
}
.section-label::before {
  content: '';
  width: 18px;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.divider-section { padding: 0; }
.divider { height: 1px; background: var(--line); }

/* Scroll reveal (script.js attaches .reveal then .visible) */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Keyboard focus — visible on :focus-visible only (mouse clicks stay clean) */
:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--text);
  color: var(--on-white);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus-visible { top: 12px; }
.admin-modal input:focus-visible,
.ra-field textarea:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* Page switching */
.home-page, .agent-page { transition: opacity 0.35s var(--ease-out); }
.agent-page { display: none; }
body.show-agent .home-page { display: none; }
body.show-agent .agent-page { display: block; }

/* ──────────────────────────────────────────────────────────────────
   HERO (home + agent share decoration system)
   ────────────────────────────────────────────────────────────────── */

.hero,
.agent-hero {
  position: relative;
  padding: 200px 0 140px;
  overflow: hidden;
  background: var(--bg);
}

.agent-hero {
  padding: 180px 0 130px;
}

.hero-container {
  position: relative;
  z-index: 2;
  max-width: 1100px;
}

/* Decorative orb — large, dark, slowly breathing */
.hero-orb {
  position: absolute;
  top: 50%;
  right: -10%;
  transform: translateY(-50%);
  width: 720px;
  height: 720px;
  pointer-events: none;
  z-index: 1;
  background:
    radial-gradient(circle at 35% 35%, rgba(255,255,255,0.10) 0%, rgba(255,255,255,0.04) 18%, transparent 42%),
    radial-gradient(circle at 65% 65%, rgba(255,255,255,0.05) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, #1a1a1a 0%, #0e0e0e 55%, transparent 75%);
  border-radius: 50%;
  filter: blur(0.5px);
  animation: orbDrift 28s var(--ease-in-out) infinite alternate;
  mask-image: radial-gradient(circle at 50% 50%, #000 55%, transparent 76%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 55%, transparent 76%);
}

.hero-orb::before,
.hero-orb::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
}

.hero-orb::before {
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.16) 0%, transparent 28%);
  mix-blend-mode: screen;
  animation: orbHighlight 14s var(--ease-in-out) infinite alternate;
}

.hero-orb::after {
  border: 1px solid rgba(255,255,255,0.04);
  box-shadow: inset 0 -80px 120px -40px rgba(0,0,0,0.6),
              inset 0 60px 120px -40px rgba(255,255,255,0.04);
}

.hero-orb-agent {
  right: -14%;
  width: 760px;
  height: 760px;
}

@keyframes orbDrift {
  0%   { transform: translateY(-50%) translateX(0)    rotate(0deg)   scale(1); }
  100% { transform: translateY(-46%) translateX(-30px) rotate(8deg)  scale(1.04); }
}
@keyframes orbHighlight {
  0%   { transform: translate(0, 0); opacity: 0.9; }
  100% { transform: translate(8%, -6%); opacity: 1; }
}

/* Subtle grid wash behind hero */
.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right,  rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 30% 40%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 30% 40%, #000 0%, transparent 70%);
}

/* Eyebrow — small pill above headline */
.hero-eyebrow,
.agent-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-secondary);
  background: var(--bg-elev-1);
  border: 1px solid var(--line);
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 36px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.hero-eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 4px rgba(255,255,255,0.08);
  animation: pulseDot 2.4s var(--ease-in-out) infinite;
}
@keyframes pulseDot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,255,255,0.18); }
  50%      { box-shadow: 0 0 0 6px rgba(255,255,255,0); }
}

/* Headlines */
.hero h1,
.agent-hero h1 {
  font-family: var(--font-sans);
  font-size: clamp(2.4rem, 5.5vw, 4.4rem);
  font-weight: 500;
  line-height: 1.04;
  letter-spacing: -0.035em;
  max-width: 880px;
  margin-bottom: 32px;
  color: var(--text);
}

.hero-h1-soft { color: var(--text-muted); }

.hero-meta { max-width: 560px; }

.hero-meta p,
.agent-hero-sub {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 36px;
  font-weight: 400;
  letter-spacing: -0.005em;
}

.hero-actions,
.agent-hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.agent-hero-note {
  font-size: 0.82rem;
  color: var(--text-faint);
  margin-top: 16px;
  letter-spacing: 0.01em;
}

/* Inline text link — kept for backwards-compat (research view-all etc.) */
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 3px;
  transition: border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out);
}
.text-link:hover { border-color: #fff; color: #fff; }

/* ──────────────────────────────────────────────────────────────────
   TRUST STRIP (operating principles marquee)
   ────────────────────────────────────────────────────────────────── */

.trust-strip {
  padding: 40px 0 60px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}

.trust-strip .container {
  display: flex;
  align-items: center;
  gap: 40px;
}

.trust-strip-label {
  flex-shrink: 0;
  font-size: 0.68rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-muted);
}

.trust-marquee {
  flex: 1;
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent 0, #000 8%, #000 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 8%, #000 92%, transparent 100%);
}

.trust-marquee-track {
  display: inline-flex;
  align-items: center;
  gap: 36px;
  white-space: nowrap;
  animation: marqueeScroll 48s linear infinite;
  will-change: transform;
}

.trust-marquee-track span {
  font-size: 0.84rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--text-muted);
}
.trust-marquee-track span[aria-hidden] { color: var(--text-faint); font-size: 1rem; }

@keyframes marqueeScroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ──────────────────────────────────────────────────────────────────
   PERSPECTIVE — large editorial statement
   ────────────────────────────────────────────────────────────────── */

.perspective {
  padding: var(--space-section) 0;
  background: var(--bg);
}

.perspective-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 80px;
  align-items: start;
}

.perspective-lead h2 {
  font-family: var(--font-sans);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: -0.025em;
  color: var(--text);
}

.perspective-body p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.78;
  margin-bottom: 22px;
  letter-spacing: -0.005em;
}
.perspective-body p:last-child { margin-bottom: 0; }

/* ──────────────────────────────────────────────────────────────────
   PRACTICE — feature cards with hover lift
   ────────────────────────────────────────────────────────────────── */

.practice {
  padding: var(--space-section) 0;
  background: var(--bg);
  border-top: 1px solid var(--line);
}

.practice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.practice-item {
  position: relative;
  padding: 32px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--bg-elev-1);
  transition: transform var(--dur-base) var(--ease-out),
              background-color var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
  overflow: hidden;
  isolation: isolate;
}

.practice-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--mx, 50%) var(--my, 0%), rgba(255,255,255,0.05), transparent 50%);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out);
  pointer-events: none;
  z-index: -1;
}

.practice-item:hover {
  transform: translateY(-3px);
  background: var(--bg-elev-2);
  border-color: var(--line-strong);
}
.practice-item:hover::before { opacity: 1; }

.practice-item h3 {
  font-family: var(--font-sans);
  font-size: 1.08rem;
  font-weight: 500;
  margin-bottom: 14px;
  line-height: 1.3;
  letter-spacing: -0.015em;
  color: var(--text);
}

.practice-item p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  letter-spacing: -0.003em;
}

/* ──────────────────────────────────────────────────────────────────
   QUOTE — large editorial pull-quote (no coloured bar)
   ────────────────────────────────────────────────────────────────── */

.quote-section,
.agent-quote {
  padding: var(--space-section) 0;
  background: var(--bg);
  border-top: 1px solid var(--line);
}

blockquote {
  position: relative;
  padding-left: 0;
  border-left: none;
  max-width: 920px;
}

blockquote::before {
  content: '“';
  position: absolute;
  top: -38px;
  left: -8px;
  font-family: var(--font-sans);
  font-size: 7rem;
  font-weight: 500;
  line-height: 1;
  color: rgba(255,255,255,0.07);
  pointer-events: none;
}

blockquote p {
  font-family: var(--font-sans);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 400;
  font-style: normal;
  line-height: 1.32;
  letter-spacing: -0.022em;
  color: var(--text);
  position: relative;
}

/* ──────────────────────────────────────────────────────────────────
   APPROACH — numbered process steps (tabular nums, hover glow)
   ────────────────────────────────────────────────────────────────── */

.approach,
.agent-how {
  padding: var(--space-section) 0;
  background: var(--bg);
  border-top: 1px solid var(--line);
}

.approach-grid,
.agent-how-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.approach-item,
.agent-how-item {
  position: relative;
  padding: 28px 24px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--bg-elev-1);
  transition: transform var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              background-color var(--dur-base) var(--ease-out);
  overflow: hidden;
}

.approach-item::after,
.agent-how-item::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s var(--ease-out);
}

.approach-item:hover,
.agent-how-item:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  background: var(--bg-elev-2);
}
.approach-item:hover::after,
.agent-how-item:hover::after { transform: scaleX(1); }

.approach-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  font-feature-settings: 'tnum';
  color: var(--text-muted);
  margin-bottom: 28px;
  letter-spacing: 0.06em;
}

.approach-item h3,
.agent-how-item h3 {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
  color: var(--text);
}

.approach-item p,
.agent-how-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  letter-spacing: -0.003em;
}

/* ──────────────────────────────────────────────────────────────────
   ABOUT
   ────────────────────────────────────────────────────────────────── */

.about-section {
  padding: var(--space-section) 0;
  background: var(--bg);
  border-top: 1px solid var(--line);
}

.about-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 80px;
  align-items: start;
}

.about-grid .section-label { margin-bottom: 0; }

.about-lead {
  font-family: var(--font-sans);
  font-size: 1.4rem;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 28px;
}

.about-body p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.78;
  margin-bottom: 22px;
  letter-spacing: -0.005em;
}
.about-body p:last-child { margin-bottom: 0; }

/* ──────────────────────────────────────────────────────────────────
   RESEARCH TEASER (landing page)
   ────────────────────────────────────────────────────────────────── */

.research-teaser {
  padding: var(--space-section) 0;
  background: var(--bg);
  border-top: 1px solid var(--line);
}

.research-teaser-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 56px;
}

.research-teaser-card {
  display: block;
  padding: 28px 26px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--bg-elev-1);
  transition: transform var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              background-color var(--dur-base) var(--ease-out);
  overflow: hidden;
}

.research-teaser-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  background: var(--bg-elev-2);
}

.research-teaser-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.topic-tag {
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  background: var(--bg-elev-1);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.research-date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.research-teaser-card h3 {
  font-family: var(--font-sans);
  font-size: 1.08rem;
  font-weight: 500;
  line-height: 1.32;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
  color: var(--text);
}

.research-teaser-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.research-view-all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 3px;
  transition: border-color var(--dur-fast) var(--ease-out);
}
.research-view-all:hover { border-color: #fff; }

/* ──────────────────────────────────────────────────────────────────
   CONTACT
   ────────────────────────────────────────────────────────────────── */

.contact {
  padding: var(--space-section) 0;
  background: var(--bg);
  border-top: 1px solid var(--line);
}

.contact-inner {
  max-width: 720px;
}

.contact h2 {
  font-family: var(--font-sans);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 500;
  line-height: 1.22;
  letter-spacing: -0.025em;
  margin-bottom: 44px;
  color: var(--text);
}

.contact-email {
  font-family: var(--font-sans);
  font-size: 1.4rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 4px;
  display: inline-block;
  margin-bottom: 14px;
  transition: border-color var(--dur-fast) var(--ease-out);
}
.contact-email:hover { border-color: #fff; }

.contact-note {
  font-size: 0.88rem;
  color: var(--text-muted);
  letter-spacing: -0.003em;
}

/* ──────────────────────────────────────────────────────────────────
   FOOTER
   ────────────────────────────────────────────────────────────────── */

.footer {
  padding: 36px 0;
  background: var(--bg);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer .wordmark {
  color: var(--text-secondary);
  font-weight: 500;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* ──────────────────────────────────────────────────────────────────
   RESEARCH ARCHIVE PAGE
   ────────────────────────────────────────────────────────────────── */

.research-hero {
  padding: 180px 0 60px;
  background: var(--bg);
}

.research-hero h1 {
  font-family: var(--font-sans);
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.03em;
  max-width: 760px;
  color: var(--text);
}

.research-hero p {
  margin-top: 22px;
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 580px;
  letter-spacing: -0.005em;
}

.filter-bar {
  padding: 0 0 56px;
  background: var(--bg);
}

.filter-bar-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 32px;
}

.filter-pill {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--text-secondary);
  background: var(--bg-elev-1);
  border: 1px solid var(--line);
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease-out);
  letter-spacing: -0.003em;
}
.filter-pill:hover {
  color: var(--text);
  background: var(--bg-elev-hover);
  border-color: var(--line-strong);
}
.filter-pill.active {
  color: var(--on-white);
  background: #fff;
  border-color: #fff;
}

.article-list {
  padding: 0 0 var(--space-section);
  background: var(--bg);
}

.article-list-item {
  display: block;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  transition: padding var(--dur-base) var(--ease-out);
}
.article-list-item:hover { padding-left: 8px; }
.article-list-item:hover h2 { color: #fff; }

.article-list-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.article-list-item h2 {
  font-family: var(--font-sans);
  font-size: 1.3rem;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
  color: var(--text);
  transition: color var(--dur-base) var(--ease-out);
}

.article-list-item p {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 720px;
}

.article-list-empty {
  padding: 80px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ──────────────────────────────────────────────────────────────────
   ARTICLE PAGE
   ────────────────────────────────────────────────────────────────── */

.article-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding-top: 120px;
  margin-bottom: 56px;
  transition: color var(--dur-fast) var(--ease-out), gap var(--dur-fast) var(--ease-out);
}
.article-back:hover { color: var(--text); gap: 10px; }

.article-header {
  margin-bottom: 56px;
  max-width: 720px;
}

.article-header-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.article-read-time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.article-header h1 {
  font-family: var(--font-sans);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  color: var(--text);
}

.article-body {
  max-width: 720px;
  padding-bottom: var(--space-section);
}

.article-body p {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.78;
  color: var(--text-secondary);
  margin-bottom: 24px;
  letter-spacing: -0.005em;
}

.article-body p:last-child { margin-bottom: 0; }

.article-body h4 {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin-top: 56px;
  margin-bottom: 22px;
}

.article-next {
  padding: 36px 0 0;
  border-top: 1px solid var(--line);
  margin-bottom: 80px;
  max-width: 720px;
}

.article-next-label {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.article-next a {
  font-family: var(--font-sans);
  font-size: 1.18rem;
  font-weight: 500;
  letter-spacing: -0.018em;
  line-height: 1.32;
  color: var(--text);
  transition: opacity var(--dur-fast) var(--ease-out);
}
.article-next a:hover { opacity: 0.78; }

/* ──────────────────────────────────────────────────────────────────
   AGENT PAGE — stats, features grid, demo CTA, agent CTA
   ────────────────────────────────────────────────────────────────── */

/* Stats — bordered cards instead of full-width strip */
.agent-stats {
  padding: 0 0 var(--space-section);
  background: var(--bg);
}

.agent-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.agent-stat {
  position: relative;
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--bg-elev-1);
  text-align: left;
  transition: transform var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              background-color var(--dur-base) var(--ease-out);
}

.agent-stat:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  background: var(--bg-elev-2);
}

.agent-stat-num {
  display: block;
  font-family: var(--font-sans);
  font-size: 2.4rem;
  font-weight: 500;
  letter-spacing: -0.04em;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1;
  font-feature-settings: 'tnum';
}

.agent-stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  line-height: 1.4;
}

/* Features */
.agent-features {
  padding: var(--space-section) 0;
  background: var(--bg);
  border-top: 1px solid var(--line);
}

.agent-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.agent-feature {
  position: relative;
  padding: 30px 28px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--bg-elev-1);
  transition: transform var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              background-color var(--dur-base) var(--ease-out);
  overflow: hidden;
}

.agent-feature:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  background: var(--bg-elev-2);
}

.agent-feature-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  background: var(--bg-elev-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  margin-bottom: 22px;
  transition: background-color var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}
.agent-feature:hover .agent-feature-icon {
  background: var(--bg-elev-hover);
  border-color: var(--line-strong);
}
.agent-feature-icon svg { width: 18px; height: 18px; }

.agent-feature h3 {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
  line-height: 1.3;
  color: var(--text);
}

.agent-feature p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Demo CTA — single big card */
.agent-demo {
  padding: var(--space-section) 0;
  background: var(--bg);
  border-top: 1px solid var(--line);
}

.agent-demo-intro {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 580px;
}

.agent-demo-cta {
  position: relative;
  text-align: center;
  padding: 72px 40px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--bg-elev-1);
  overflow: hidden;
  isolation: isolate;
}

.agent-demo-cta::before {
  content: '';
  position: absolute;
  inset: -1px;
  background: radial-gradient(ellipse 60% 80% at 50% 0%, rgba(255,255,255,0.08), transparent 60%);
  z-index: -1;
}

.agent-demo-cta-sub {
  margin-top: 18px;
  font-size: 0.86rem;
  color: var(--text-muted);
  letter-spacing: 0.01em;
}

/* Agent CTA — closing call-to-action */
.agent-cta {
  padding: var(--space-section) 0;
  background: var(--bg);
  border-top: 1px solid var(--line);
}

.agent-cta-inner {
  max-width: 720px;
}

.agent-cta h2 {
  font-family: var(--font-sans);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 500;
  line-height: 1.22;
  letter-spacing: -0.025em;
  margin-bottom: 36px;
  color: var(--text);
}

.agent-cta-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.agent-cta-note {
  font-size: 0.84rem;
  color: var(--text-muted);
  letter-spacing: 0.005em;
}

/* ──────────────────────────────────────────────────────────────────
   ADMIN OVERLAY (secret)
   ────────────────────────────────────────────────────────────────── */

.admin-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out);
}
.admin-overlay.visible { opacity: 1; }

.admin-modal {
  background: #131313;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px 32px 28px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
}
.admin-modal h3 {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  margin-bottom: 22px;
  color: var(--text);
}
.admin-modal input {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  border: 1px solid var(--line);
  background: var(--bg-elev-1);
  border-radius: 10px;
  margin-bottom: 12px;
  outline: none; /* replaced by :focus-visible ring below */
  transition: border-color var(--dur-fast) var(--ease-out);
  box-sizing: border-box;
  color: var(--text);
}
.admin-modal input::placeholder { color: var(--text-muted); }
.admin-modal input:focus { border-color: var(--line-strong); }
.admin-modal .admin-error {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 12px;
  display: none;
  padding: 8px 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.admin-modal .admin-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 8px;
}
.admin-modal button {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
}
.admin-modal button:hover { background: var(--bg-elev-1); }
.admin-modal button.primary {
  background: #fff;
  color: var(--on-white);
  border-color: #fff;
}
.admin-modal button.primary:hover { background: #f4f4f4; }

/* ──────────────────────────────────────────────────────────────────
   RESPONSIVE
   ────────────────────────────────────────────────────────────────── */

@media (max-width: 980px) {
  :root { --space-section: 100px; }

  .nav-links { display: none; }
  .nav-toggle { display: flex; }

  .hero,
  .agent-hero { padding: 160px 0 100px; }

  .hero-orb {
    right: -40%;
    width: 600px;
    height: 600px;
    opacity: 0.85;
  }

  .perspective-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .practice-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .approach-grid,
  .agent-how-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .research-teaser-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .agent-stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .agent-features-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .trust-strip .container {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
}

@media (max-width: 640px) {
  :root { --space-section: 80px; }

  .container { padding: 0 20px; }

  .nav-inner { padding: 14px 20px; }

  .nav-links {
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 10, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 0 28px;
    gap: 8px;
    z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    font-size: 1.4rem;
    padding: 12px 16px;
    min-height: 44px;
    display: flex;
    align-items: center;
    font-weight: 500;
    color: var(--text);
    padding: 12px 0;
    border-radius: 0;
    background: transparent !important;
    border: none !important;
  }

  .nav-toggle { z-index: 1001; }

  .hero,
  .agent-hero { padding: 130px 0 80px; }

  .hero-orb {
    right: -60%;
    width: 480px;
    height: 480px;
    opacity: 0.7;
  }

  .hero-actions,
  .agent-hero-actions { width: 100%; }
  .hero-actions .agent-btn,
  .agent-hero-actions .agent-btn { width: 100%; justify-content: center; }

  .approach-grid,
  .agent-how-grid,
  .agent-stats-grid,
  .agent-features-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .agent-demo-cta { padding: 48px 24px; }

  .agent-cta-actions { width: 100%; }
  .agent-cta-actions .agent-btn { width: 100%; justify-content: center; }

  .article-back { padding-top: 90px; }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  blockquote::before { font-size: 5rem; top: -28px; left: -4px; }

  .ra-modal { max-width: 100%; border-radius: var(--radius-md) var(--radius-md) 0 0; }
  .ra-row { grid-template-columns: 1fr; }
}

/* ──────────────────────────────────────────────────────────────────
   REQUEST ACCESS FORM MODAL
   ────────────────────────────────────────────────────────────────── */

.ra-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out);
}
.ra-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.ra-modal {
  background: #111;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 0;
  width: 100%;
  max-width: 500px;
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.7);
  transform: translateY(12px) scale(0.98);
  transition: transform var(--dur-base) var(--ease-out);
  overflow: hidden;
}
.ra-overlay.open .ra-modal {
  transform: translateY(0) scale(1);
}

.ra-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 28px 0;
}

.ra-modal-header h3 {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 6px;
}

.ra-modal-sub {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.ra-close {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--text-muted);
  background: var(--bg-elev-1);
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  transition: color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out);
  line-height: 1;
}
.ra-close:hover {
  color: var(--text);
  background: var(--bg-elev-hover);
  border-color: var(--line-strong);
}

.ra-form {
  padding: 24px 28px 28px;
}

.ra-field {
  margin-bottom: 16px;
}

.ra-field label {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}

.ra-optional {
  font-weight: 400;
  color: var(--text-faint);
}

.ra-field input,
.ra-field select,
.ra-field textarea {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg-elev-1);
  border: 1px solid var(--line);
  border-radius: 10px;
  outline: none; /* replaced by :focus-visible ring below */
  transition: border-color var(--dur-fast) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out);
  box-sizing: border-box;
  -webkit-appearance: none;
}
.ra-field input::placeholder,
.ra-field textarea::placeholder {
  color: var(--text-faint);
}
.ra-field input:focus,
.ra-field select:focus,
.ra-field textarea:focus {
  border-color: var(--line-strong);
  background: var(--bg-elev-2);
}

.ra-field select {
  cursor: pointer;
  color: var(--text-secondary);
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23666' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.ra-field textarea {
  resize: vertical;
  min-height: 72px;
  line-height: 1.5;
}

.ra-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.ra-row .ra-field { margin-bottom: 16px; }

.ra-actions {
  margin-top: 8px;
}

.ra-submit {
  width: 100%;
  justify-content: center;
  padding: 14px 24px;
}

.ra-privacy {
  margin-top: 14px;
  font-size: 0.76rem;
  color: var(--text-faint);
  text-align: center;
  letter-spacing: 0.005em;
}

/* Success state */
.ra-success {
  padding: 56px 28px;
  text-align: center;
}
.ra-success-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: #fff;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--line);
  border-radius: 50%;
}
.ra-success h3 {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--text);
  margin-bottom: 10px;
}
.ra-success p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  line-height: 1.5;
}
.ra-done {
  margin: 0 auto;
}