/* ============================================================
   MARCO AI — Marketing Site Styles
   Enterprise B2B SaaS — calm, precise, premium.
   Custom palette: graphite neutrals + Nucleus teal accent.
   ============================================================ */

:root, [data-theme='light'] {
  /* Type scale (fluid) */
  --text-xs: clamp(0.75rem, 0.72rem + 0.14vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.84rem + 0.16vw, 0.9375rem);
  --text-base: clamp(1rem, 0.97rem + 0.16vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1.02rem + 0.45vw, 1.3125rem);
  --text-xl: clamp(1.55rem, 1.24rem + 1.15vw, 2.25rem);
  --text-2xl: clamp(2.15rem, 1.35rem + 2.45vw, 3.5rem);
  --text-3xl: clamp(3rem, 1.25rem + 4.55vw, 5rem);

  /* Spacing (4px) */
  --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;

  /* Surfaces — cool graphite-blue neutrals */
  --color-bg: #FBFBFA;
  --color-surface: #FFFFFF;
  --color-surface-2: #F6F7F5;
  --color-surface-offset: #EEF1EF;
  --color-surface-dynamic: #E5EAE7;
  --color-divider: #E8EAE7;
  --color-border: #DDE2DE;
  --color-border-strong: #C8D0CB;

  /* Text */
  --color-text: #17202A;
  --color-text-strong: #071118;
  --color-text-muted: #5A6572;
  --color-text-faint: #98A1AA;
  --color-text-inverse: #FFFFFF;

  /* Primary — Nucleus teal */
  --color-primary: #0B7A82;
  --color-primary-hover: #075E66;
  --color-primary-active: #04474D;
  --color-primary-soft: #E5F4F3;
  --color-primary-soft-2: #CBE7E7;

  /* Accent ink (deep navy for dramatic surfaces) */
  --color-ink: #09111B;
  --color-ink-2: #121C2A;

  /* Semantic */
  --color-success: #1A7F3F;
  --color-success-soft: #E1F1E5;
  --color-warning: #B25510;
  --color-warning-soft: #FBEADB;
  --color-danger: #B0344A;
  --color-danger-soft: #F8DEE3;

  /* Radius */
  --radius-xs: 0.25rem;
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.75rem;
  --radius-full: 9999px;

  --transition-interactive: 220ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(7, 17, 24, 0.035);
  --shadow-sm: 0 1px 3px rgba(7, 17, 24, 0.05), 0 1px 2px rgba(7, 17, 24, 0.03);
  --shadow-md: 0 10px 24px -16px rgba(7, 17, 24, 0.22), 0 1px 3px rgba(7, 17, 24, 0.04);
  --shadow-lg: 0 28px 70px -36px rgba(7, 17, 24, 0.28), 0 10px 22px -18px rgba(7, 17, 24, 0.18);
  --shadow-xl: 0 42px 90px -48px rgba(7, 17, 24, 0.38), 0 18px 36px -28px rgba(7, 17, 24, 0.22);

  /* Layout */
  --content-narrow: 720px;
  --content-default: 1080px;
  --content-wide: 1240px;
  --content-full: 1360px;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Satoshi', system-ui, -apple-system, sans-serif;
  --font-body: 'Satoshi', 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

[data-theme='dark'] {
  --color-bg: #070A0E;
  --color-surface: #0E141B;
  --color-surface-2: #121A23;
  --color-surface-offset: #192431;
  --color-surface-dynamic: #233241;
  --color-divider: #202A36;
  --color-border: #2A3543;
  --color-border-strong: #405061;

  --color-text: #E6EAF2;
  --color-text-strong: #F8FAFC;
  --color-text-muted: #99A2B4;
  --color-text-faint: #5F6A80;
  --color-text-inverse: #07090F;

  --color-primary: #4FB6BE;
  --color-primary-hover: #6FCED5;
  --color-primary-active: #91DDE2;
  --color-primary-soft: #102A2D;
  --color-primary-soft-2: #163C40;

  --color-success: #4FB270;
  --color-success-soft: #0F2418;
  --color-warning: #D6803A;
  --color-warning-soft: #2A1D10;
  --color-danger: #DA6E84;
  --color-danger-soft: #2A1219;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 16px -4px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 48px -16px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 32px 64px -24px rgba(0, 0, 0, 0.7);
}

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

.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 4vw, var(--space-10));
}

.container-wide {
  max-width: var(--content-full);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 4vw, var(--space-10));
}

section {
  padding-block: clamp(var(--space-20), 8.5vw, 9rem);
}

.section-tight {
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  max-width: 760px;
  margin-bottom: var(--space-12);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}

h1, .h1 {
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

h2, .h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.03;
}

h3, .h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h4, .h4 {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.25;
}

.lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.62;
  max-width: 64ch;
}

.muted { color: var(--color-text-muted); }
.faint { color: var(--color-text-faint); }
.strong { color: var(--color-text-strong); }
.mono { font-family: var(--font-mono); font-feature-settings: 'tnum'; }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 44px;
  padding: 0 var(--space-5);
  border-radius: 0.8rem;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.005em;
  white-space: nowrap;
  text-decoration: none;
  border: 1px solid transparent;
  position: relative;
  isolation: isolate;
}

.btn-primary {
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--color-primary) 92%, white) 0%, var(--color-primary) 100%);
  color: #fff;
  box-shadow: 0 1px 0 0 rgba(255,255,255,0.22) inset, 0 12px 24px -16px color-mix(in oklab, var(--color-primary) 70%, black);
}

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

.btn-secondary {
  background: color-mix(in oklab, var(--color-surface) 88%, transparent);
  color: var(--color-text-strong);
  border-color: var(--color-border);
  box-shadow: 0 1px 0 rgba(255,255,255,0.72) inset, var(--shadow-xs);
}

.btn-secondary:hover {
  background: var(--color-surface);
  border-color: var(--color-border-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

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

.btn-ghost:hover {
  background: var(--color-surface-2);
}

.btn-lg { height: 52px; padding: 0 var(--space-6); font-size: var(--text-sm); }

.btn .arrow {
  display: inline-block;
  transition: transform var(--transition-interactive);
}
.btn:hover .arrow { transform: translateX(2px); }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 74%, transparent);
  backdrop-filter: saturate(190%) blur(18px);
  -webkit-backdrop-filter: saturate(190%) blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-interactive), background var(--transition-interactive);
}

.site-header[data-scrolled='true'] {
  border-bottom-color: var(--color-divider);
  background: color-mix(in oklab, var(--color-bg) 90%, transparent);
  box-shadow: 0 12px 32px -28px rgba(7, 17, 24, 0.4);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text-strong);
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.nav-brand .mark { color: var(--color-primary); }

.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-2);
}

@media (min-width: 900px) {
  .nav-links { display: inline-flex; }
}

.nav-link {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
}
.nav-link:hover { color: var(--color-text-strong); background: color-mix(in oklab, var(--color-surface) 78%, transparent); }

.nav-actions { display: inline-flex; align-items: center; gap: var(--space-2); }

.theme-toggle {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  background: color-mix(in oklab, var(--color-surface) 88%, transparent);
  box-shadow: 0 1px 0 rgba(255,255,255,0.65) inset;
}
.theme-toggle:hover { color: var(--color-text-strong); border-color: var(--color-border-strong); transform: translateY(-1px); box-shadow: var(--shadow-xs); }

.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  background: color-mix(in oklab, var(--color-surface) 88%, transparent);
  box-shadow: 0 1px 0 rgba(255,255,255,0.65) inset;
}

@media (min-width: 900px) {
  .menu-toggle { display: none; }
}
@media (max-width: 640px) {
  .nav-actions .btn-secondary { display: none; }
  .nav-actions .btn-primary {
    height: 36px !important;
    padding-inline: 10px !important;
    font-size: 12px;
  }
  .theme-toggle, .menu-toggle {
    width: 36px;
    height: 36px;
  }
}

.mobile-drawer {
  display: none;
  position: fixed;
  inset: 64px 0 0 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-divider);
  padding: var(--space-6);
  z-index: 40;
  flex-direction: column;
  gap: var(--space-2);
}
.mobile-drawer[data-open='true'] { display: flex; }
.mobile-drawer .nav-link { font-size: var(--text-base); padding: var(--space-3); }

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

.hero {
  position: relative;
  padding-block: clamp(var(--space-16), 10vw, var(--space-24)) clamp(var(--space-16), 8vw, var(--space-24));
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: -10% 30% auto -10%;
  height: 480px;
  background: radial-gradient(60% 60% at 30% 30%, color-mix(in oklab, var(--color-primary) 18%, transparent) 0%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, color-mix(in oklab, var(--color-border) 50%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in oklab, var(--color-border) 50%, transparent) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(60% 60% at 50% 35%, #000 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(60% 60% at 50% 35%, #000 0%, transparent 80%);
  pointer-events: none;
  opacity: 0.7;
  z-index: 0;
}

.hero > .container { position: relative; z-index: 1; }

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3) var(--space-1) var(--space-1);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  box-shadow: var(--shadow-xs);
  margin-bottom: var(--space-6);
}
.hero-tag .pill {
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-h1 {
  font-size: var(--text-3xl);
  letter-spacing: -0.06em;
  line-height: 0.98;
  font-weight: 800;
  max-width: 16ch;
  color: var(--color-text-strong);
}

.hero-h1 .accent {
  background: linear-gradient(180deg, var(--color-primary) 0%, color-mix(in oklab, var(--color-primary) 70%, var(--color-ink)) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-promise {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin: var(--space-6) 0 var(--space-2);
}
.hero-promise span {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}
.hero-promise span::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.hero-sub {
  margin-top: var(--space-6);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 56ch;
  line-height: 1.62;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3) var(--space-6);
  margin-top: var(--space-10);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}
.hero-trust b { color: var(--color-text-strong); font-weight: 600; }
.dot { width: 4px; height: 4px; border-radius: 50%; background: var(--color-text-faint); }

/* Hero product mockup */
.hero-mockup-wrap {
  margin-top: var(--space-16);
  position: relative;
}

.hero-mockup-wrap::before {
  content: '';
  position: absolute;
  inset: 30% 5% -10% 5%;
  background: radial-gradient(50% 60% at 50% 50%, color-mix(in oklab, var(--color-primary) 22%, transparent), transparent 70%);
  filter: blur(60px);
  z-index: 0;
}

/* ===========================
   Product mockup card
   =========================== */

.product-card {
  position: relative;
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--color-surface) 96%, white) 0%, var(--color-surface) 100%);
  border: 1px solid color-mix(in oklab, var(--color-border) 82%, white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  z-index: 1;
}

.product-card-chrome {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-divider);
  background: linear-gradient(180deg, color-mix(in oklab, var(--color-surface-2) 82%, white) 0%, var(--color-surface-2) 100%);
}

.actual-product-shot {
  margin: 0;
  background: var(--color-surface);
}
.actual-product-shot img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1881 / 849;
  object-fit: cover;
}
.product-app.legacy-hero-mockup {
  display: none;
}

.chrome-dots { display: inline-flex; gap: 6px; }
.chrome-dots i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--color-border-strong);
  display: inline-block;
}
.chrome-url {
  flex: 1;
  background: color-mix(in oklab, var(--color-surface) 88%, transparent);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-faint);
  text-align: center;
  max-width: 360px;
  margin-inline: auto;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  justify-content: center;
}
.chrome-url::before {
  content: '';
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--color-success);
  flex: 0 0 auto;
}

.product-app {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 520px;
}

@media (max-width: 720px) {
  .product-app { grid-template-columns: 1fr; min-height: auto; }
  .product-sidebar { display: none; }
}

.product-sidebar {
  border-right: 1px solid var(--color-divider);
  background: linear-gradient(180deg, var(--color-surface-2) 0%, color-mix(in oklab, var(--color-surface-2) 80%, var(--color-surface)) 100%);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.product-sidebar .group-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-faint);
  margin: var(--space-3) var(--space-2) var(--space-2);
  font-weight: 600;
}
.product-sidebar .nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 500;
}
.product-sidebar .nav-item.active {
  background: linear-gradient(180deg, color-mix(in oklab, var(--color-primary-soft) 86%, white) 0%, var(--color-primary-soft) 100%);
  color: var(--color-primary);
  box-shadow: 0 1px 0 rgba(255,255,255,0.7) inset;
}
.product-sidebar .nav-item .dotbadge {
  margin-left: auto;
  background: var(--color-primary);
  color: #fff;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  font-weight: 700;
}

.product-content { padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-5); }

.brief-header { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap; }
.brief-title { display: flex; flex-direction: column; gap: var(--space-1); }
.brief-title .acct {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--color-text-faint); font-weight: 600;
}
.brief-title h4 { font-size: 1.125rem; color: var(--color-text-strong); font-weight: 600; }
.stage-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-warning-soft);
  color: var(--color-warning);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}
@media (max-width: 720px) { .kpi-row { grid-template-columns: repeat(2, 1fr); } }
.kpi-card {
  background: color-mix(in oklab, var(--color-surface) 92%, var(--color-surface-2));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.kpi-card .label { font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--color-text-faint); font-weight: 600; }
.kpi-card .value { font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; color: var(--color-text-strong); font-feature-settings: 'tnum'; }
.kpi-card .delta { font-size: 11px; color: var(--color-success); font-weight: 600; }
.kpi-card .delta.warn { color: var(--color-warning); }
.kpi-card .delta.danger { color: var(--color-danger); }

.brief-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-4);
}
@media (max-width: 720px) { .brief-grid { grid-template-columns: 1fr; } }

.brief-block {
  background: color-mix(in oklab, var(--color-surface) 93%, var(--color-surface-2));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.brief-block-head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); }
.brief-block-head h5 {
  font-family: var(--font-body);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-faint);
  font-weight: 600;
}
.brief-block-head .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  font-weight: 600;
}

.signal-list { display: flex; flex-direction: column; gap: var(--space-3); }
.signal {
  display: grid;
  grid-template-columns: 16px 1fr auto;
  gap: var(--space-3);
  align-items: start;
  font-size: 13px;
}
.signal-icon {
  width: 16px; height: 16px;
  border-radius: 4px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  flex: 0 0 auto;
  margin-top: 1px;
}
.signal-icon.warn { background: var(--color-warning-soft); color: var(--color-warning); }
.signal-icon.danger { background: var(--color-danger-soft); color: var(--color-danger); }
.signal-icon.success { background: var(--color-success-soft); color: var(--color-success); }
.signal-text { color: var(--color-text); line-height: 1.45; }
.signal-text b { color: var(--color-text-strong); font-weight: 600; }
.signal-text .meta { display: block; color: var(--color-text-faint); font-size: 11px; margin-top: 2px; }
.signal-tag {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
  font-weight: 600;
}

.stakeholder-row {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  gap: var(--space-3);
  align-items: center;
  font-size: 13px;
}
.avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700;
  font-family: var(--font-display);
}
.avatar.alt-1 { background: linear-gradient(135deg, #6E5BD0, #4538A8); }
.avatar.alt-2 { background: linear-gradient(135deg, #C26A28, #9A4D14); }
.avatar.alt-3 { background: linear-gradient(135deg, #2D6E8C, #173D54); }

.sentiment {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
}
.sentiment.pos { color: var(--color-success); background: var(--color-success-soft); }
.sentiment.neu { color: var(--color-text-muted); background: var(--color-surface-offset); }
.sentiment.neg { color: var(--color-danger); background: var(--color-danger-soft); }

.action-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, color-mix(in oklab, var(--color-primary-soft) 86%, white) 0%, var(--color-primary-soft) 100%);
  border: 1px solid color-mix(in oklab, var(--color-primary) 25%, transparent);
}
.action-bar .ab-icon {
  width: 28px; height: 28px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
}
.action-bar .ab-text { flex: 1; min-width: 200px; font-size: 13px; color: var(--color-text-strong); }
.action-bar .ab-text b { font-weight: 600; }

.confidence-bar { display: flex; align-items: center; gap: var(--space-2); }
.confidence-bar .track { width: 60px; height: 4px; border-radius: var(--radius-full); background: var(--color-surface-offset); overflow: hidden; }
.confidence-bar .fill { height: 100%; background: var(--color-primary); border-radius: var(--radius-full); }
.confidence-bar .pct { font-family: var(--font-mono); font-size: 11px; color: var(--color-text-muted); font-weight: 600; }

/* ===========================
   Logo cloud
   =========================== */

.logo-cloud {
  padding-block: var(--space-12);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface-2);
}
.logo-cloud-label {
  text-align: center;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}
.logo-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-8) var(--space-12);
  color: var(--color-text-faint);
}
.logo-row .lg {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  opacity: 0.85;
}

/* ===========================
   Problem section
   =========================== */

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 1fr;
  gap: var(--space-5);
  align-items: stretch;
}
@media (max-width: 1024px) { .problem-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .problem-grid { grid-template-columns: 1fr; } }

.problem-card {
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--color-surface) 98%, white) 0%, var(--color-surface) 100%);
  border: 1px solid color-mix(in oklab, var(--color-border) 72%, white);
  border-radius: calc(var(--radius-xl) + 6px);
  padding: var(--space-7, 1.75rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-height: 350px;
  height: 100%;
  position: relative;
  overflow: hidden;
  box-shadow:
    0 1px 2px color-mix(in oklab, var(--color-text) 5%, transparent),
    0 18px 42px color-mix(in oklab, var(--color-text) 4%, transparent);
  transition: transform var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.problem-card::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(240px 140px at 14% 0%, color-mix(in oklab, var(--color-primary) 5%, transparent), transparent 70%);
  opacity: 0.75;
}
.problem-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in oklab, var(--color-primary) 20%, var(--color-border));
  box-shadow:
    0 2px 5px color-mix(in oklab, var(--color-text) 5%, transparent),
    0 24px 54px color-mix(in oklab, var(--color-primary) 8%, transparent);
}

.problem-card .icon {
  width: 42px; height: 42px;
  border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--color-primary) 9%, var(--color-surface));
  border: 1px solid color-mix(in oklab, var(--color-primary) 12%, var(--color-border));
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-1);
  box-shadow: inset 0 1px 0 color-mix(in oklab, white 64%, transparent);
  position: relative;
  z-index: 1;
}
.problem-card h4 {
  font-size: clamp(1.02rem, 0.98rem + 0.15vw, 1.125rem);
  line-height: 1.25;
  letter-spacing: -0.015em;
  font-weight: 650;
  color: var(--color-text-strong);
  position: relative;
  z-index: 1;
}
.problem-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.62;
  position: relative;
  z-index: 1;
}
.problem-card .impact {
  margin-top: auto;
  padding: var(--space-4);
  border: 1px solid color-mix(in oklab, var(--color-primary) 12%, var(--color-border));
  border-radius: var(--radius-lg);
  background: color-mix(in oklab, var(--color-primary) 4%, var(--color-surface-2));
  font-size: var(--text-xs);
  color: color-mix(in oklab, var(--color-text) 78%, var(--color-primary));
  font-weight: 500;
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  line-height: 1.5;
  position: relative;
  z-index: 1;
}
.problem-card .impact b {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  min-height: 22px;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--color-primary) 10%, var(--color-surface));
  color: var(--color-primary);
  border: 1px solid color-mix(in oklab, var(--color-primary) 18%, transparent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 10px;
  line-height: 1;
}

@media (max-width: 640px) {
  .problem-card { min-height: auto; }
  .problem-card .impact { flex-direction: column; }
}

/* ===========================
   Nucleus differentiator
   =========================== */

.nucleus {
  position: relative;
  background:
    radial-gradient(780px 440px at 82% 18%, color-mix(in oklab, var(--color-primary) 9%, transparent), transparent 70%),
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface-2) 100%);
  border-block: 1px solid var(--color-divider);
}

.nucleus-shell {
  display: grid;
  grid-template-columns: minmax(560px, 1.12fr) minmax(440px, 1fr);
  gap: clamp(var(--space-8), 4vw, var(--space-14));
  align-items: center;
}
@media (max-width: 1080px) { .nucleus-shell { grid-template-columns: 1fr; } }

.nucleus-quote {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  letter-spacing: -0.02em;
  color: var(--color-text-strong);
  line-height: 1.25;
  font-weight: 500;
  border-left: 3px solid var(--color-primary);
  padding: var(--space-1) 0 var(--space-1) var(--space-5);
  margin-block: var(--space-6);
}
.nucleus-quote em { color: var(--color-primary); font-style: normal; font-weight: 600; }

.compare-table {
  background: color-mix(in oklab, var(--color-surface) 95%, white);
  border: 1px solid color-mix(in oklab, var(--color-border) 86%, white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.compare-table .row {
  display: grid;
  grid-template-columns: minmax(180px, 0.82fr) minmax(310px, 1.18fr);
  border-bottom: 1px solid var(--color-divider);
}
.compare-table .row:last-child { border-bottom: none; }
.compare-table .cell {
  padding: var(--space-4) var(--space-5);
  font-size: 0.93rem;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  line-height: 1.4;
}
.compare-table .cell.left { color: var(--color-text-muted); border-right: 1px solid var(--color-divider); }
.compare-table .cell.right { color: var(--color-text-strong); font-weight: 500; background: color-mix(in oklab, var(--color-primary) 4%, var(--color-surface)); }
.compare-table .cell.right { white-space: nowrap; }
.compare-table .head .cell {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--color-text-faint);
  background: var(--color-surface-2);
}
.compare-table .head .cell.right { color: var(--color-primary); }
.compare-table .check {
  width: 18px; height: 18px;
  border-radius: 50%;
  background: linear-gradient(180deg, color-mix(in oklab, var(--color-primary) 90%, white), var(--color-primary));
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  flex: 0 0 auto;
  font-size: 11px;
}

/* Nucleus diagram */
.nucleus-diagram {
  position: relative;
  aspect-ratio: 1 / 1;
  width: min(100%, 640px);
  max-width: 640px;
  margin-inline: auto;
}
.nucleus-diagram svg {
  overflow: visible;
  filter: drop-shadow(0 24px 52px rgba(6, 114, 122, 0.08));
}
.nucleus-node {
  transform-box: fill-box;
  transform-origin: center;
  animation: nucleusBubble 4.8s ease-in-out infinite;
  will-change: transform;
}
.nucleus-node circle {
  filter: drop-shadow(0 12px 20px rgba(14, 23, 38, 0.08));
}
.nucleus-node.node-2 { animation-delay: -0.55s; }
.nucleus-node.node-3 { animation-delay: -1.1s; }
.nucleus-node.node-4 { animation-delay: -1.65s; }
.nucleus-node.node-5 { animation-delay: -2.2s; }
.nucleus-node.node-6 { animation-delay: -2.75s; }
@keyframes nucleusBubble {
  0%, 100% { transform: scale(1); }
  45% { transform: scale(1.09); }
  60% { transform: scale(1.045); }
}

.nucleus .section-head {
  max-width: min(1120px, 100%);
}
.nucleus .section-head h3 {
  font-size: clamp(1.6rem, 2.4vw, 2.25rem);
  letter-spacing: -0.035em;
}
.nucleus .section-head .muted {
  max-width: none;
}

@media (max-width: 720px) {
  .compare-table .row { grid-template-columns: 0.9fr 1.15fr; }
  .compare-table .cell { padding-inline: var(--space-3); }
  .compare-table .cell.right { white-space: normal; }
}

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

/* Intelligence layers grid */
.layers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-12);
}
@media (max-width: 1024px) { .layers-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .layers-grid { grid-template-columns: 1fr; } }

.layer-card {
  background: linear-gradient(180deg, color-mix(in oklab, var(--color-surface) 96%, white) 0%, var(--color-surface) 100%);
  border: 1px solid color-mix(in oklab, var(--color-border) 86%, white);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.layer-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in oklab, var(--color-primary) 24%, var(--color-border));
  box-shadow: var(--shadow-md);
}
.layer-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary) 0%, transparent 100%);
}
.layer-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-primary);
  font-weight: 600;
  letter-spacing: 0.05em;
}
.layer-card h4 { font-size: 1rem; color: var(--color-text-strong); }
.layer-card .layer-cat {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
  font-weight: 600;
}
.layer-card .layer-output {
  margin-top: var(--space-3);
  padding: var(--space-3);
  background: var(--color-surface-2);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
  font-style: italic;
}

/* ===========================
   How it works (Before/After/Between)
   =========================== */

.loop-timeline {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-auto-rows: 1fr;
  gap: var(--space-5);
  position: relative;
}
@media (max-width: 900px) { .loop-timeline { grid-template-columns: 1fr; } }

.loop-card {
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--color-surface) 98%, white) 0%, var(--color-surface) 100%);
  border: 1px solid color-mix(in oklab, var(--color-border) 74%, white);
  border-radius: calc(var(--radius-xl) + 6px);
  padding: clamp(var(--space-6), 2.4vw, var(--space-8));
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  position: relative;
  overflow: hidden;
  height: 100%;
  box-shadow:
    0 1px 2px color-mix(in oklab, var(--color-text) 5%, transparent),
    0 18px 42px color-mix(in oklab, var(--color-text) 4%, transparent);
  transition: transform var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.loop-card::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(260px 140px at 18% 0%, color-mix(in oklab, var(--color-primary) 5%, transparent), transparent 72%);
  opacity: 0.7;
}
.loop-card.featured {
  border-color: color-mix(in oklab, var(--color-primary) 20%, var(--color-border));
  box-shadow:
    0 2px 5px color-mix(in oklab, var(--color-text) 5%, transparent),
    0 24px 54px color-mix(in oklab, var(--color-primary) 8%, transparent);
}
.loop-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in oklab, var(--color-primary) 22%, var(--color-border));
  box-shadow:
    0 2px 5px color-mix(in oklab, var(--color-text) 5%, transparent),
    0 24px 54px color-mix(in oklab, var(--color-primary) 9%, transparent);
}

.loop-card .step-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary);
  background: color-mix(in oklab, var(--color-primary) 8%, var(--color-surface));
  border: 1px solid color-mix(in oklab, var(--color-primary) 12%, transparent);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  align-self: flex-start;
  position: relative;
  z-index: 1;
}

.loop-card h3 {
  font-size: clamp(1.45rem, 1.25rem + 0.5vw, 1.75rem);
  line-height: 1.18;
  letter-spacing: -0.025em;
  color: var(--color-text-strong);
  position: relative;
  z-index: 1;
}

.loop-card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.62;
  position: relative;
  z-index: 1;
}

.loop-card ul {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: var(--space-1);
  position: relative;
  z-index: 1;
}
.loop-card li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: 1.5;
  padding: var(--space-3) 0;
  border-top: 1px solid color-mix(in oklab, var(--color-divider) 72%, transparent);
}
.loop-card li::before {
  content: '✓';
  width: 20px; height: 20px;
  border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--color-primary) 9%, var(--color-surface));
  color: var(--color-primary);
  border: 1px solid color-mix(in oklab, var(--color-primary) 14%, transparent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 800;
  flex: 0 0 auto;
  margin-top: 1px;
}
.loop-card li:first-child { border-top: none; padding-top: 0; }

/* ===========================
   Feature deep dives
   =========================== */

.feature-block {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
  border-bottom: 1px solid var(--color-divider);
}
.feature-block:last-child { border-bottom: none; }
.feature-block.flip { grid-template-columns: 1.1fr 1fr; }
.feature-block.flip .feature-copy { order: 2; }
@media (max-width: 900px) {
  .feature-block, .feature-block.flip { grid-template-columns: 1fr; }
  .feature-block.flip .feature-copy { order: 0; }
}

.feature-copy { display: flex; flex-direction: column; gap: var(--space-4); }
.feature-copy h3 { color: var(--color-text-strong); font-size: 2rem; letter-spacing: -0.025em; }
.feature-copy ul { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-3); }
.feature-copy li { display: flex; gap: var(--space-3); align-items: flex-start; font-size: var(--text-sm); color: var(--color-text); }
.feature-copy li svg { flex: 0 0 auto; color: var(--color-primary); margin-top: 3px; }

.feature-mini-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}
.feature-mini-stats .stat .num {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}
.feature-mini-stats .stat .lab { font-size: var(--text-xs); color: var(--color-text-muted); }

/* generic preview frame */
.preview {
  background: linear-gradient(180deg, color-mix(in oklab, var(--color-surface) 96%, white) 0%, var(--color-surface) 100%);
  border: 1px solid color-mix(in oklab, var(--color-border) 86%, white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.preview-head { display: flex; align-items: center; gap: var(--space-3); }
.preview-head .preview-icon {
  width: 32px; height: 32px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: inline-flex; align-items: center; justify-content: center;
}
.preview-head .preview-title { font-size: var(--text-sm); font-weight: 600; color: var(--color-text-strong); }
.preview-head .preview-meta { font-size: 11px; color: var(--color-text-faint); margin-top: 2px; font-family: var(--font-mono); }

.preview-list { display: flex; flex-direction: column; gap: var(--space-3); }
.preview-item {
  background: color-mix(in oklab, var(--color-surface-2) 72%, var(--color-surface));
  border: 1px solid color-mix(in oklab, var(--color-border) 88%, white);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  display: grid;
  grid-template-columns: 16px 1fr auto;
  gap: var(--space-3);
  align-items: start;
}
.preview-item .pi-icon {
  margin-top: 2px;
  width: 16px; height: 16px;
  border-radius: 4px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 10px;
  line-height: 1;
}
.preview-item .pi-icon.warn { background: var(--color-warning-soft); color: var(--color-warning); }
.preview-item .pi-icon.danger { background: var(--color-danger-soft); color: var(--color-danger); }
.preview-item .pi-icon.success { background: var(--color-success-soft); color: var(--color-success); }
.preview-item .pi-text { font-size: 13px; color: var(--color-text); line-height: 1.45; }
.preview-item .pi-text b { color: var(--color-text-strong); font-weight: 600; }
.preview-item .pi-meta { font-size: 11px; color: var(--color-text-faint); margin-top: 4px; display: block; }
.preview-item .pi-side { font-size: 11px; color: var(--color-text-faint); font-family: var(--font-mono); white-space: nowrap; }

.preview-footer-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
  font-size: 13px;
}
.preview-footer-action .ar { color: var(--color-primary); font-weight: 600; display: inline-flex; gap: var(--space-2); align-items: center; }

/* Account plan radial / pillars */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-2);
}
.pillar {
  border: 1px solid color-mix(in oklab, var(--color-border) 88%, white);
  background: color-mix(in oklab, var(--color-surface-2) 72%, var(--color-surface));
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.pillar .lab {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-faint);
  font-weight: 600;
}
.pillar .val { font-family: var(--font-display); font-weight: 600; font-size: 13px; color: var(--color-text-strong); }
.pillar .bar { height: 4px; border-radius: var(--radius-full); background: var(--color-surface-offset); overflow: hidden; }
.pillar .bar i { display: block; height: 100%; background: var(--color-primary); }
.pillar.warn .bar i { background: var(--color-warning); }
.pillar.danger .bar i { background: var(--color-danger); }

/* Workspace mock */
.workspace-mock { display: flex; flex-direction: column; gap: var(--space-3); }
.msg {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}
.msg .ic {
  width: 28px; height: 28px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  flex: 0 0 auto;
}
.msg.user .ic { background: var(--color-surface-offset); color: var(--color-text-muted); }
.msg .bubble {
  background: color-mix(in oklab, var(--color-surface-2) 74%, var(--color-surface));
  border: 1px solid color-mix(in oklab, var(--color-border) 88%, white);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  font-size: 13px;
  color: var(--color-text);
  line-height: 1.5;
  flex: 1;
}
.msg.user .bubble {
  background: var(--color-primary-soft);
  border-color: color-mix(in oklab, var(--color-primary) 20%, transparent);
  color: var(--color-text-strong);
}
.msg .bubble b { color: var(--color-text-strong); font-weight: 600; }
.msg .bubble .src {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px dashed var(--color-divider);
  font-size: 11px;
  color: var(--color-text-faint);
}
.msg .bubble .src span {
  background: var(--color-surface-offset);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  display: inline-flex; align-items: center; gap: 4px;
}

/* ===========================
   Integrations
   =========================== */

.integrations {
  background:
    radial-gradient(620px 340px at 12% 16%, color-mix(in oklab, var(--color-primary) 6%, transparent), transparent 70%),
    var(--color-surface-2);
  border-block: 1px solid var(--color-divider);
}

.integration-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-auto-rows: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-10);
}
@media (max-width: 1100px) { .integration-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 760px) { .integration-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

.int-card {
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--color-surface) 98%, white) 0%, var(--color-surface) 100%);
  border: 1px solid color-mix(in oklab, var(--color-border) 78%, white);
  border-radius: var(--radius-xl);
  padding: var(--space-6) var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-3);
  min-height: 172px;
  height: 100%;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  box-shadow:
    0 1px 2px color-mix(in oklab, var(--color-text) 5%, transparent),
    0 18px 42px color-mix(in oklab, var(--color-text) 5%, transparent);
  transition: transform var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.int-card::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(160px 100px at 50% 0%, color-mix(in oklab, var(--color-primary) 6%, transparent), transparent 68%);
  opacity: 0;
  transition: opacity var(--transition-interactive);
}
.int-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in oklab, var(--color-primary) 24%, var(--color-border));
  box-shadow:
    0 2px 5px color-mix(in oklab, var(--color-text) 6%, transparent),
    0 24px 54px color-mix(in oklab, var(--color-primary) 10%, transparent);
}
.int-card:hover::before { opacity: 1; }
.int-card .int-icon {
  width: 66px; height: 66px;
  border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--color-surface) 88%, white);
  color: var(--color-primary);
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px;
  border: 1px solid color-mix(in oklab, var(--color-border) 70%, white);
  box-shadow:
    inset 0 1px 0 color-mix(in oklab, white 74%, transparent),
    0 12px 24px color-mix(in oklab, var(--color-text) 8%, transparent);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}
.int-card:hover .int-icon {
  transform: scale(1.04);
  border-color: color-mix(in oklab, var(--color-primary) 16%, var(--color-border));
  box-shadow:
    inset 0 1px 0 color-mix(in oklab, white 74%, transparent),
    0 18px 34px color-mix(in oklab, var(--color-primary) 12%, transparent);
}
.int-card .int-icon img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 9px;
}
.int-card .int-icon.sf { background: color-mix(in oklab, #00a1e0 10%, var(--color-surface)); }
.int-card .int-icon.hubspot { background: color-mix(in oklab, #ff7a59 10%, var(--color-surface)); }
.int-card .int-icon.gong { background: color-mix(in oklab, #6c4cff 10%, var(--color-surface)); }
.int-card .int-icon.zoom { background: color-mix(in oklab, #2d8cff 10%, var(--color-surface)); }
.int-card .int-icon.google { background: color-mix(in oklab, #4285f4 9%, var(--color-surface)); }
.int-card .int-icon.outlook { background: color-mix(in oklab, #0078d4 10%, var(--color-surface)); }
.int-card .int-icon.gmail { background: color-mix(in oklab, #ea4335 9%, var(--color-surface)); }
.int-card .int-icon.linkedin { background: color-mix(in oklab, #0a66c2 10%, var(--color-surface)); }
.int-card .int-icon.slack { background: color-mix(in oklab, #4a154b 9%, var(--color-surface)); }
.int-card .int-icon.outreach { background: color-mix(in oklab, #6f3ff5 9%, var(--color-surface)); }
.int-card .int-icon.salesloft { background: color-mix(in oklab, #00a3a3 10%, var(--color-surface)); }
@media (max-width: 640px) {
  .int-card { min-height: 156px; padding: var(--space-4); }
  .int-card .int-icon { width: 58px; height: 58px; padding: 12px; }
  .int-card .int-icon img { width: 32px; height: 32px; }
}
.int-card .int-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-strong);
  line-height: 1.2;
}
.int-card .int-cat {
  font-size: 10px;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  line-height: 1.25;
  max-width: 18ch;
}
.int-card .int-tag {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  background: var(--color-success-soft);
  color: var(--color-success);
}
.int-card .int-tag.phase { background: var(--color-surface-offset); color: var(--color-text-muted); }

.int-legend {
  display: inline-flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.int-legend .leg-tag {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-weight: 500;
}
.int-legend .leg-tag::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-success);
}
.int-legend .leg-tag.phase::before { background: var(--color-text-faint); }

/* ===========================
   Personas
   =========================== */

.personas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}
@media (max-width: 900px) { .personas-grid { grid-template-columns: 1fr; } }

.persona-card {
  background: linear-gradient(180deg, color-mix(in oklab, var(--color-surface) 96%, white) 0%, var(--color-surface) 100%);
  border: 1px solid color-mix(in oklab, var(--color-border) 86%, white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.persona-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in oklab, var(--color-primary) 24%, var(--color-border));
  box-shadow: var(--shadow-md);
}

.persona-card .persona-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 11px;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  align-self: flex-start;
}
.persona-card.primary { background: linear-gradient(180deg, var(--color-primary-soft) 0%, var(--color-surface) 60%); border-color: color-mix(in oklab, var(--color-primary) 25%, var(--color-border)); }
.persona-card.primary .persona-tag { color: var(--color-primary); }

.persona-card h3 { color: var(--color-text-strong); font-size: 1.5rem; }
.persona-card .role { font-size: var(--text-sm); color: var(--color-text-muted); }

.persona-card ul { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-2); }
.persona-card li { display: flex; gap: var(--space-2); align-items: flex-start; font-size: var(--text-sm); color: var(--color-text); }
.persona-card li svg { flex: 0 0 auto; color: var(--color-primary); margin-top: 4px; }

/* ===========================
   Outcomes / metrics
   =========================== */

.metrics {
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--color-ink) 88%, #142536) 0%, var(--color-ink) 100%);
  color: var(--color-text-inverse);
  position: relative;
  overflow: hidden;
}
.metrics::before {
  content: '';
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(40% 40% at 20% 20%, color-mix(in oklab, var(--color-primary) 35%, transparent) 0%, transparent 60%),
    radial-gradient(30% 50% at 90% 80%, color-mix(in oklab, var(--color-primary) 25%, transparent) 0%, transparent 60%);
  filter: blur(40px);
  pointer-events: none;
}
.metrics::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(60% 80% at 50% 50%, #000 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(60% 80% at 50% 50%, #000 0%, transparent 80%);
  pointer-events: none;
}
.metrics > .container { position: relative; z-index: 1; }
.metrics .eyebrow { color: #4FB6BE; }
.metrics h2 { color: #F8FAFC; }
.metrics .lede { color: rgba(248, 250, 252, 0.7); }

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-12);
}
@media (max-width: 1024px) { .metrics-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .metrics-grid { grid-template-columns: 1fr; } }

.metric {
  background: linear-gradient(180deg, rgba(255,255,255,0.075) 0%, rgba(255,255,255,0.035) 100%);
  border: 1px solid rgba(255,255,255,0.11);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  box-shadow: 0 20px 54px -36px rgba(0,0,0,0.9);
}
.metric .num {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4vw, 3rem);
  font-weight: 600;
  color: #F8FAFC;
  letter-spacing: -0.03em;
  line-height: 1;
  font-feature-settings: 'tnum';
}
.metric .num .unit { color: #4FB6BE; font-size: 0.6em; margin-left: 4px; }
.metric .lab { font-size: var(--text-sm); color: rgba(248, 250, 252, 0.85); font-weight: 500; }
.metric .why { font-size: var(--text-xs); color: rgba(248, 250, 252, 0.55); margin-top: var(--space-2); padding-top: var(--space-2); border-top: 1px solid rgba(255,255,255,0.08); }

/* ===========================
   Trust / security
   =========================== */

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-10);
}
@media (max-width: 1024px) { .trust-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .trust-grid { grid-template-columns: 1fr; } }

.trust-card {
  background: linear-gradient(180deg, color-mix(in oklab, var(--color-surface) 96%, white) 0%, var(--color-surface) 100%);
  border: 1px solid color-mix(in oklab, var(--color-border) 86%, white);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-interactive), border-color var(--transition-interactive), box-shadow var(--transition-interactive);
}
.trust-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in oklab, var(--color-primary) 24%, var(--color-border));
  box-shadow: var(--shadow-md);
}
.trust-card .icon {
  width: 36px; height: 36px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.trust-card h4 { font-size: var(--text-base); color: var(--color-text-strong); }
.trust-card p { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.55; }

.compliance-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}
.compliance-row .cb {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--color-surface) 94%, transparent);
  border: 1px solid color-mix(in oklab, var(--color-border) 88%, white);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-strong);
}
.compliance-row .cb svg { color: var(--color-primary); }

/* ===========================
   FAQ
   =========================== */

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(360px, 100%), 1fr));
  gap: var(--space-3);
  margin-top: var(--space-10);
}
.faq-item {
  background: linear-gradient(180deg, color-mix(in oklab, var(--color-surface) 96%, white) 0%, var(--color-surface) 100%);
  border: 1px solid color-mix(in oklab, var(--color-border) 86%, white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
}
.faq-item:hover { border-color: color-mix(in oklab, var(--color-primary) 20%, var(--color-border)); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-5);
  display: flex;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--color-text-strong);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .plus {
  width: 24px; height: 24px;
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  display: inline-flex; align-items: center; justify-content: center;
  flex: 0 0 auto;
  transition: transform var(--transition-interactive), background var(--transition-interactive);
}
.faq-item[open] summary .plus { transform: rotate(45deg); background: var(--color-primary-soft); color: var(--color-primary); }
.faq-item .answer {
  padding: 0 var(--space-5) var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 64ch;
}

@media (max-width: 640px) {
  .faq-grid { grid-template-columns: 1fr; }
}

/* ===========================
   Final CTA
   =========================== */

.cta-final {
  position: relative;
  background:
    radial-gradient(640px 320px at 86% 2%, rgba(255,255,255,0.2), transparent 68%),
    linear-gradient(135deg, var(--color-primary) 0%, color-mix(in oklab, var(--color-primary) 54%, var(--color-ink)) 100%);
  color: #fff;
  border-radius: var(--radius-2xl);
  margin-block: var(--space-16);
  padding: clamp(var(--space-10), 6vw, var(--space-20));
  overflow: hidden;
  box-shadow: 0 36px 92px -52px color-mix(in oklab, var(--color-primary) 56%, black);
}
.cta-final::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(50% 50% at 100% 0%, rgba(255,255,255,0.18) 0%, transparent 60%);
  pointer-events: none;
}
.cta-final::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, transparent 0%, #000 50%);
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 50%);
  opacity: 0.6;
  pointer-events: none;
}

.cta-final-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-10);
  align-items: center;
  z-index: 1;
}
@media (max-width: 900px) { .cta-final-grid { grid-template-columns: 1fr; } }

.cta-final h2 { color: #fff; font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.025em; }
.cta-final p { color: rgba(255,255,255,0.85); font-size: var(--text-base); margin-top: var(--space-4); max-width: 50ch; }

.cta-final .btn-primary {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}
.cta-final .btn-primary:hover { background: rgba(255,255,255,0.92); color: var(--color-primary-hover); }

.cta-final .btn-secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.32);
}
.cta-final .btn-secondary:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.5); }

/* Form card */
.early-access-form {
  background: rgba(255,255,255,0.09);
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(18px);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  box-shadow: 0 24px 70px -40px rgba(0,0,0,0.55), 0 1px 0 rgba(255,255,255,0.18) inset;
}
.early-access-form h4 { color: #fff; font-size: var(--text-lg); }
.early-access-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); }
@media (max-width: 600px) { .early-access-form .row { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: var(--space-1); }
.field label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.7);
}
.field input, .field select {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.22);
  color: #fff;
  padding: var(--space-3);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  width: 100%;
}
.field input::placeholder { color: rgba(255,255,255,0.45); }
.field input:focus, .field select:focus {
  outline: none;
  border-color: rgba(255,255,255,0.66);
  background: rgba(255,255,255,0.14);
  box-shadow: 0 0 0 4px rgba(255,255,255,0.12);
}
.field select option { background: var(--color-ink); color: #fff; }

.success-msg {
  display: none;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  color: #fff;
  font-size: var(--text-sm);
  align-items: flex-start;
  gap: var(--space-3);
}
.success-msg.show { display: flex; }
.success-msg svg { flex: 0 0 auto; color: #fff; }

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

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-12);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  align-items: flex-start;
}
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

.footer-brand { display: flex; flex-direction: column; gap: var(--space-3); max-width: 320px; }
.footer-brand p { font-size: var(--text-sm); color: var(--color-text-muted); }

.footer-col h5 {
  font-family: var(--font-body);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-faint);
  font-weight: 700;
  margin-bottom: var(--space-3);
}
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-2); list-style: none; padding: 0; margin: 0; }
.footer-col li a {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  text-decoration: none;
}
.footer-col li a:hover { color: var(--color-text-strong); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  color: var(--color-text-faint);
  font-size: var(--text-xs);
}

/* ===========================
   Utility
   =========================== */

.center { text-align: center; }
.mx-auto { margin-inline: auto; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

/* Scroll reveal */
.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1), transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============================================================
   Senior design polish pass
   Goal: Apple-level simplicity + Stripe-level clarity without
   changing MARCO's section order, content, or IA.
   ============================================================ */

:root,
[data-theme='light'] {
  --color-bg: #FAFAF7;
  --color-surface: #FFFFFF;
  --color-surface-2: #F4F6F3;
  --color-surface-offset: #EEF2EF;
  --color-surface-dynamic: #E3E9E5;
  --color-divider: #E7EAE5;
  --color-border: #DDE4DF;
  --color-border-strong: #C9D3CD;

  --color-text: #17212B;
  --color-text-strong: #071119;
  --color-text-muted: #5D6975;
  --color-text-faint: #9AA5AD;

  --color-primary: #08747B;
  --color-primary-hover: #065F66;
  --color-primary-active: #044C52;
  --color-primary-soft: #E7F3F2;
  --color-primary-soft-2: #D1E8E7;

  --space-7: 1.75rem;
  --space-14: 3.5rem;
  --space-18: 4.5rem;
  --space-28: 7rem;

  --font-display: 'General Sans', 'Satoshi', system-ui, -apple-system, sans-serif;
  --font-body: 'Satoshi', 'Inter', system-ui, -apple-system, sans-serif;

  --shadow-xs: 0 1px 2px rgba(7, 17, 24, 0.025);
  --shadow-sm: 0 1px 2px rgba(7, 17, 24, 0.035), 0 8px 20px -18px rgba(7, 17, 24, 0.16);
  --shadow-md: 0 1px 2px rgba(7, 17, 24, 0.04), 0 18px 44px -32px rgba(7, 17, 24, 0.22);
  --shadow-lg: 0 1px 2px rgba(7, 17, 24, 0.045), 0 28px 72px -44px rgba(7, 17, 24, 0.26);
  --shadow-xl: 0 1px 2px rgba(7, 17, 24, 0.05), 0 44px 100px -54px rgba(7, 17, 24, 0.32);

  --transition-interactive: 200ms ease-in-out;
}

body {
  background:
    radial-gradient(900px 520px at 82% -10%, color-mix(in oklab, var(--color-primary) 6%, transparent), transparent 72%),
    var(--color-bg);
  color: var(--color-text);
}

.container,
.container-wide {
  padding-inline: clamp(var(--space-6), 4vw, var(--space-12));
}

section {
  padding-block: clamp(var(--space-20), 9vw, 10rem);
}

.section-tight {
  padding-block: clamp(var(--space-14), 7vw, var(--space-24));
}

.section-head {
  gap: var(--space-5);
  max-width: 820px;
  margin-bottom: clamp(var(--space-12), 5vw, var(--space-18));
}

.section-head.center,
.section-head.mx-auto,
.center .section-head {
  text-align: center;
  align-items: center;
}

.eyebrow {
  font-size: clamp(0.72rem, 0.7rem + 0.08vw, 0.8rem);
  letter-spacing: 0.14em;
  font-weight: 700;
}

.eyebrow::before {
  width: 28px;
  opacity: 0.45;
}

h1,
.h1,
.hero-h1 {
  font-family: var(--font-display);
  letter-spacing: -0.065em;
  line-height: 0.97;
  font-weight: 700;
}

h2,
.h2 {
  font-family: var(--font-display);
  letter-spacing: -0.055em;
  line-height: 1.04;
  font-weight: 650;
}

h3,
.h3 {
  font-family: var(--font-display);
  letter-spacing: -0.035em;
  line-height: 1.14;
  font-weight: 650;
}

p,
li,
.lede,
.muted {
  letter-spacing: -0.006em;
}

.lede {
  line-height: 1.68;
  color: color-mix(in oklab, var(--color-text-muted) 92%, var(--color-text));
}

.btn {
  height: 46px;
  padding-inline: var(--space-6);
  border-radius: var(--radius-full);
  font-weight: 700;
  letter-spacing: -0.012em;
  transition:
    transform var(--transition-interactive),
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

.btn-lg {
  height: 54px;
  padding-inline: var(--space-7);
}

.btn-primary {
  background: linear-gradient(180deg, color-mix(in oklab, var(--color-primary) 88%, white) 0%, var(--color-primary) 100%);
  box-shadow:
    inset 0 1px 0 color-mix(in oklab, white 30%, transparent),
    0 16px 28px -20px color-mix(in oklab, var(--color-primary) 78%, black);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: linear-gradient(180deg, color-mix(in oklab, var(--color-primary-hover) 88%, white) 0%, var(--color-primary-hover) 100%);
  box-shadow:
    inset 0 1px 0 color-mix(in oklab, white 24%, transparent),
    0 20px 36px -22px color-mix(in oklab, var(--color-primary) 80%, black);
}

.btn-secondary,
.theme-toggle,
.menu-toggle {
  background: color-mix(in oklab, var(--color-surface) 92%, transparent);
  border-color: color-mix(in oklab, var(--color-border) 84%, white);
  box-shadow:
    inset 0 1px 0 color-mix(in oklab, white 78%, transparent),
    var(--shadow-xs);
}

.btn-secondary:hover,
.theme-toggle:hover,
.menu-toggle:hover {
  transform: translateY(-2px);
  border-color: color-mix(in oklab, var(--color-primary) 18%, var(--color-border));
  box-shadow: var(--shadow-sm);
}

.site-header {
  background: color-mix(in oklab, var(--color-bg) 82%, transparent);
  border-bottom-color: color-mix(in oklab, var(--color-divider) 55%, transparent);
}

.site-header[data-scrolled='true'] {
  background: color-mix(in oklab, var(--color-bg) 94%, transparent);
  box-shadow: 0 18px 36px -32px rgba(7, 17, 24, 0.35);
}

.nav {
  height: 68px;
}

.nav-brand {
  font-family: var(--font-display);
  letter-spacing: -0.025em;
  font-weight: 700;
}

.nav-link {
  padding: var(--space-2) var(--space-4);
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive);
}

.nav-link:hover {
  background: color-mix(in oklab, var(--color-primary) 6%, var(--color-surface));
  color: var(--color-text-strong);
}

.hero {
  padding-block: clamp(var(--space-18), 11vw, 9.75rem) clamp(var(--space-18), 8vw, 8rem);
}

.hero::before {
  opacity: 0.62;
  filter: blur(56px);
}

.hero::after {
  opacity: 0.42;
  background-size: 72px 72px;
}

.hero-tag,
.hero-promise span,
.compliance-row .cb,
.step-pill,
.loop-card .step-pill {
  box-shadow: inset 0 1px 0 color-mix(in oklab, white 70%, transparent), var(--shadow-xs);
}

.hero-h1 {
  max-width: 17ch;
}

.hero-h1 .accent {
  background: linear-gradient(180deg, #0B858C 0%, #06656B 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-sub {
  max-width: 58ch;
  line-height: 1.7;
}

.hero-mockup-wrap {
  margin-top: clamp(var(--space-14), 7vw, var(--space-24));
}

.product-card,
.preview,
.problem-card,
.loop-card,
.layer-card,
.persona-card,
.trust-card,
.faq-item,
.int-card,
.metric,
.early-access-form {
  border-color: color-mix(in oklab, var(--color-border) 78%, white);
  box-shadow: var(--shadow-sm);
}

.product-card,
.preview,
.problem-card,
.loop-card,
.layer-card,
.persona-card,
.trust-card,
.faq-item,
.int-card {
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--color-surface) 98%, white) 0%, var(--color-surface) 100%);
}

.product-card {
  box-shadow: var(--shadow-xl);
}

.preview:hover,
.problem-card:hover,
.loop-card:hover,
.layer-card:hover,
.persona-card:hover,
.trust-card:hover,
.int-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in oklab, var(--color-primary) 18%, var(--color-border));
  box-shadow: var(--shadow-md);
}

.problem-grid,
.layers-grid,
.trust-grid,
.personas-grid,
.metrics-grid {
  gap: clamp(var(--space-5), 2.2vw, var(--space-7));
}

.problem-card,
.loop-card,
.persona-card,
.trust-card,
.layer-card {
  border-radius: var(--radius-2xl);
}

.problem-card,
.loop-card {
  padding: clamp(var(--space-6), 2.8vw, var(--space-8));
}

.problem-card p,
.loop-card p,
.trust-card p,
.layer-card .layer-output,
.persona-card .role,
.faq-item .answer {
  line-height: 1.66;
}

.problem-card .icon,
.trust-card .icon,
.preview-head .preview-icon,
.action-bar .ab-icon {
  border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--color-primary) 8%, var(--color-surface));
  border: 1px solid color-mix(in oklab, var(--color-primary) 12%, var(--color-border));
  box-shadow: inset 0 1px 0 color-mix(in oklab, white 64%, transparent);
}

.problem-card .impact,
.loop-card li::before,
.compare-table .check {
  background: color-mix(in oklab, var(--color-primary) 7%, var(--color-surface));
}

.feature-block {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  gap: clamp(var(--space-10), 6vw, var(--space-20));
}

.feature-copy {
  gap: var(--space-5);
}

.feature-copy h3 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 2.2vw, 2.35rem);
  line-height: 1.14;
  letter-spacing: -0.045em;
}

.feature-copy ul,
.persona-card ul,
.preview-list {
  gap: var(--space-3);
}

.feature-copy li,
.persona-card li,
.trust-card p,
.preview-item {
  font-size: var(--text-sm);
}

.nucleus,
.integrations,
#features {
  background:
    radial-gradient(720px 360px at 88% 8%, color-mix(in oklab, var(--color-primary) 5%, transparent), transparent 72%),
    linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface-2) 100%);
}

.nucleus-quote {
  border-left-width: 2px;
  line-height: 1.3;
  padding-left: var(--space-6);
}

.compare-table,
.product-card,
.early-access-form {
  border-radius: var(--radius-2xl);
}

.metrics {
  background:
    linear-gradient(180deg, #111A24 0%, #071119 100%);
}

.metrics::before {
  opacity: 0.72;
}

.metric {
  background: linear-gradient(180deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.035) 100%);
  border-color: rgba(255,255,255,0.12);
  border-radius: var(--radius-2xl);
}

.cta-final {
  border-radius: calc(var(--radius-2xl) + 0.5rem);
  background:
    radial-gradient(680px 360px at 90% 0%, rgba(255,255,255,0.18), transparent 70%),
    linear-gradient(135deg, #08747B 0%, #082931 100%);
}

.site-footer {
  background: color-mix(in oklab, var(--color-surface) 92%, var(--color-bg));
}

.footer-grid {
  gap: clamp(var(--space-8), 5vw, var(--space-14));
}

.reveal {
  opacity: 1;
  transform: none;
  transition:
    opacity 520ms ease-out,
    transform 520ms ease-out;
}

@media (max-width: 900px) {
  section {
    padding-block: clamp(var(--space-16), 12vw, var(--space-24));
  }

  .section-head {
    margin-bottom: var(--space-10);
  }

  .hero {
    padding-block: var(--space-16) var(--space-14);
  }

  .hero-h1 {
    max-width: 13.5ch;
  }

  .loop-timeline,
  .problem-grid,
  .layers-grid,
  .trust-grid,
  .personas-grid,
  .metrics-grid {
    gap: var(--space-5);
  }
}

@media (max-width: 640px) {
  :root,
  [data-theme='light'] {
    --text-2xl: clamp(2rem, 1.35rem + 3.2vw, 2.75rem);
    --text-3xl: clamp(2.4rem, 1.12rem + 8.25vw, 3.45rem);
  }

  .container,
  .container-wide {
    padding-inline: var(--space-5);
  }

  .nav {
    height: 60px;
  }

  .nav-brand {
    font-size: 0.98rem;
  }

  .hero-tag {
    align-items: center;
    border-radius: var(--radius-xl);
    gap: var(--space-3);
  }

  .hero-tag .pill {
    white-space: nowrap;
    padding-inline: var(--space-3);
  }

  .hero::after {
    opacity: 0.24;
    background-size: 58px 58px;
  }

  .hero-h1 {
    line-height: 1;
    letter-spacing: -0.058em;
  }

  .hero-promise {
    gap: var(--space-2);
  }

  .hero-promise span {
    padding-inline: var(--space-2);
  }

  .hero-sub,
  .lede {
    font-size: var(--text-base);
    line-height: 1.68;
  }

  .hero-ctas,
  .cta-final .flex {
    width: 100%;
  }

  .hero-ctas .btn,
  .cta-final .btn {
    width: 100%;
  }

  .hero-trust {
    gap: var(--space-2) var(--space-3);
  }

  .hero-trust .dot {
    display: none;
  }

  .problem-card,
  .loop-card,
  .persona-card,
  .trust-card,
  .layer-card,
  .preview,
  .faq-item summary {
    padding: var(--space-5);
  }

  .feature-block {
    padding-block: var(--space-14);
  }

  .feature-mini-stats {
    gap: var(--space-5);
  }

  .integration-grid {
    gap: var(--space-3);
  }

  .int-card {
    min-height: 150px;
    border-radius: var(--radius-xl);
  }

  .cta-final {
    margin-block: var(--space-10);
    padding: var(--space-7) var(--space-5);
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}