/* ============================================================
   Thought Pilot / AI-native content studio
   ============================================================ */

:root {
  /* brand: black (#000) + purple (#8E7BD7) from logo, on warm near-white */
  --bg: #FAFAF7;
  --bg-elev: #FFFFFF;
  --surface: #FFFFFF;
  --border: #EAE8E0;
  --border-strong: #D5D2C7;
  --text: #0A0A0B;
  --text-dim: #5C5C66;
  --text-faint: #9A9AA0;
  --accent: #8E7BD7;
  --accent-soft: #AB9AE6;
  --accent-deep: #6F5BC4;
  --accent-dim: rgba(142, 123, 215, 0.10);
  --accent-tint: rgba(142, 123, 215, 0.18);
  --radius: 14px;
  --radius-sm: 8px;
  --max: 1180px;
  --ff-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --ff-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

html {
  background: var(--bg);
  color: var(--text);
  font-family: var(--ff-sans);
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
em { font-style: italic; color: var(--accent-deep); }

/* subtle noise overlay */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.04;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 2;
}
.container.narrow { max-width: 820px; }

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

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  background: rgba(250, 250, 247, 0.78);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand-mark { color: var(--text); }
.brand-name { font-size: 15px; }
.nav-links {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--text-dim);
}
.nav-links a {
  transition: color 140ms ease;
}
.nav-links a:hover { color: var(--text); }
.nav-cta { font-size: 13px; padding: 9px 16px; }

/* ============================================================
   Buttons + primitives
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 160ms ease;
  white-space: nowrap;
}
.btn-lg { padding: 14px 24px; font-size: 15px; }

.btn-primary {
  background: var(--text);
  color: #fff;
  border-color: var(--text);
}
.btn-primary:hover {
  background: var(--accent-deep);
  border-color: var(--accent-deep);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -10px var(--accent);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent-deep);
  background: var(--accent-dim);
}
.btn-ghost .arrow {
  transition: transform 160ms ease;
}
.btn-ghost:hover .arrow { transform: translateX(3px); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.eyebrow.mono {
  font-family: var(--ff-mono);
  font-weight: 400;
  font-size: 11.5px;
  letter-spacing: 0.04em;
  text-transform: none;
  color: var(--text-faint);
}
.eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 14px var(--accent);
  animation: pulse 2.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.mono { font-family: var(--ff-mono); }
.dim { color: var(--text-dim); }

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

.hero {
  position: relative;
  padding: 120px 0 88px;
  text-align: center;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  top: -220px;
  left: 50%;
  transform: translateX(-50%);
  width: 1100px;
  height: 700px;
  background:
    radial-gradient(ellipse at 50% 40%, rgba(142, 123, 215, 0.30), transparent 62%);
  filter: blur(50px);
  pointer-events: none;
  z-index: 1;
}
.hero .eyebrow {
  justify-content: center;
  margin: 0 auto 28px;
}
.hero-title {
  margin: 0 auto 22px;
  max-width: 900px;
  font-size: clamp(44px, 7.2vw, 88px);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.035em;
}
.gradient-text {
  background: linear-gradient(180deg, var(--accent-deep) 0%, var(--accent) 60%, var(--accent-soft) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  max-width: 640px;
  margin: 0 auto 40px;
  font-size: 18px;
  line-height: 1.55;
  color: var(--text-dim);
  letter-spacing: -0.005em;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 84px;
}
.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: 760px;
  margin: 0 auto;
  gap: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.meta-num {
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.025em;
  color: var(--text);
  margin-bottom: 6px;
}
.meta-label {
  font-size: 12.5px;
  color: var(--text-dim);
  letter-spacing: 0.005em;
}

/* ============================================================
   Section base
   ============================================================ */

.section {
  padding: 120px 0;
  border-top: 1px solid var(--border);
  position: relative;
}
.section-head {
  margin-bottom: 72px;
  max-width: 820px;
}
.section-head .eyebrow { margin-bottom: 20px; }
.section-title {
  margin: 0;
  font-size: clamp(32px, 4.8vw, 52px);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.028em;
  color: var(--text);
}
.section-body {
  font-size: 17px;
  line-height: 1.6;
  margin-top: 16px;
}

.prose {
  max-width: 720px;
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-dim);
  letter-spacing: -0.005em;
}
.prose p + p { margin-top: 20px; }

/* ============================================================
   Pillars (02)
   ============================================================ */

.section-pillars {
  background:
    radial-gradient(ellipse at 50% 0%, rgba(142, 123, 215, 0.09), transparent 55%);
}
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.pillar {
  position: relative;
  padding: 32px 28px 36px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 180ms ease, transform 180ms ease;
}
.pillar:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.pillar-num {
  font-size: 11.5px;
  color: var(--accent-deep);
  margin-bottom: 56px;
  letter-spacing: 0.04em;
}
.pillar-title {
  margin: 0 0 16px;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.22;
  color: var(--text);
}
.pillar-body {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ============================================================
   Stack section (03) / split layout
   ============================================================ */

.split {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 80px;
  align-items: start;
}
.split-left .section-title { margin: 20px 0 24px; }

.feature-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
}
.feature-list li {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding: 26px 4px;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.feat-label {
  font-size: 11.5px;
  color: var(--accent-deep);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-top: 3px;
}
.feat-text {
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--text);
}

/* ============================================================
   Deliverables (04)
   ============================================================ */

.deliverables {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.deliv-card {
  padding: 34px 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 180ms ease;
}
.deliv-card:hover { border-color: var(--border-strong); }
.deliv-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 28px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}
.deliv-platform {
  display: inline-block;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
  background: var(--accent);
  padding: 5px 10px;
  border-radius: 6px;
}
.deliv-title {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}
.deliv-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.deliv-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15.5px;
  color: var(--text);
}
.deliv-list li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.deliv-note {
  margin-top: 40px;
  font-size: 14px;
  color: var(--text-dim);
  text-align: center;
  letter-spacing: 0.005em;
}
.deliv-note .mono { color: var(--accent); margin-right: 6px; }

/* ============================================================
   Who it's for (05)
   ============================================================ */

.who-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.who-card {
  padding: 32px 28px 34px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 180ms ease, background 180ms ease;
}
.who-card:hover {
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--surface), var(--accent-dim));
  transform: translateY(-2px);
  box-shadow: 0 20px 40px -24px rgba(142, 123, 215, 0.4);
}
.who-title {
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text);
}
.who-card p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-dim);
}

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

.section-cta { padding: 120px 0 140px; }
.cta-card {
  position: relative;
  padding: 64px 48px 68px;
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(142, 123, 215, 0.22), transparent 65%),
    var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 30px 60px -30px rgba(142, 123, 215, 0.35);
}
.cta-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, transparent 60%, rgba(142, 123, 215, 0.05));
  pointer-events: none;
}
.cta-card .eyebrow { margin-bottom: 20px; }
.cta-title {
  margin: 0 0 18px;
  font-size: clamp(32px, 4.6vw, 48px);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.028em;
}
.cta-sub {
  max-width: 520px;
  margin: 0 auto 32px;
  font-size: 16.5px;
  color: var(--text-dim);
  line-height: 1.55;
}
.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

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

.footer {
  border-top: 1px solid var(--border);
  padding: 36px 0 48px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
}
.footer-brand .dim { color: var(--text-dim); }
.footer-links {
  display: flex;
  gap: 24px;
  font-size: 14px;
  color: var(--text-dim);
}
.footer-links a { transition: color 140ms ease; }
.footer-links a:hover { color: var(--text); }

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 960px) {
  .nav-links { display: none; }
  .section { padding: 88px 0; }
  .section-head { margin-bottom: 48px; }
  .hero { padding: 88px 0 64px; }
  .hero-ctas { margin-bottom: 64px; }
  .hero-meta {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 28px;
  }
  .pillars,
  .deliverables,
  .who-grid {
    grid-template-columns: 1fr;
  }
  .pillar-num { margin-bottom: 28px; }
  .split {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .feature-list li {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 20px 4px;
  }
  .cta-card { padding: 48px 28px 52px; }
  .section-cta { padding: 88px 0 96px; }
}

@media (max-width: 560px) {
  .container { padding: 0 20px; }
  .nav-cta { display: none; }
  .hero-title { font-size: clamp(36px, 9vw, 52px); }
  .deliv-card, .who-card, .pillar { padding: 26px 22px 28px; }
}