/* FutureAI family · shared design tokens (paper + ink, serif display). */
:root {
  --paper: #FAF9F6;
  --paper-surface: #FFFFFF;
  --paper-sunken: #F2F0EA;
  --paper-line: #DFDBCF;
  --ink-primary: #1F2420;
  --ink-secondary: #4E5754;
  --ink-muted: #7A7F7C;
  --accent: #2D3748;
  --accent-hover: #1F2937;
  --serif: "Georgia", "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink-secondary);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; display: block; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 760px; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 249, 246, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--paper-line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-family: var(--serif); font-size: 20px; font-weight: 600; color: var(--ink-primary); }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a { color: var(--ink-secondary); font-size: 15px; }
.nav-links a:hover { color: var(--ink-primary); }

/* Sections */
section { padding: 88px 0; }
section.tight { padding: 56px 0; }
section.sunken { background: var(--paper-sunken); }
section.surface { background: var(--paper-surface); }

.eyebrow {
  font-size: 13px; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-muted); margin-bottom: 20px;
}
h1.display {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(2.6rem, 6vw, 4.2rem); line-height: 1.05;
  letter-spacing: -0.02em; color: var(--ink-primary);
}
h2.display {
  font-family: var(--serif); font-weight: 500;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem); line-height: 1.15;
  letter-spacing: -0.015em; color: var(--ink-primary);
}
h3 { font-family: var(--serif); font-weight: 500; font-size: 1.35rem; color: var(--ink-primary); line-height: 1.25; }
.lead { font-size: clamp(1.15rem, 2vw, 1.4rem); line-height: 1.5; color: var(--ink-secondary); }
p { margin-bottom: 1.1rem; }
p:last-child { margin-bottom: 0; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 30px; border-radius: 12px;
  background: var(--ink-primary); color: var(--paper);
  font-weight: 600; font-size: 16px;
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  transition: opacity 0.2s, transform 0.2s;
}
.btn:hover { opacity: 0.9; color: var(--paper); transform: translateY(-1px); }
.btn svg { width: 20px; height: 20px; }

/* Grid + cards */
.grid { display: grid; gap: 28px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--paper-surface); border: 1px solid var(--paper-line);
  border-radius: 16px; padding: 32px;
}
.card h3 { margin-bottom: 12px; }

/* Hero */
.hero-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 56px; align-items: center; }
.portrait {
  border-radius: 20px; overflow: hidden; aspect-ratio: 1;
  border: 1px solid var(--paper-line);
  box-shadow: 0 1px 2px rgba(31,36,32,0.04), 0 12px 32px rgba(31,36,32,0.08);
}
.portrait img { width: 100%; height: 100%; object-fit: cover; }

/* Press list */
.press { list-style: none; }
.press li { padding: 22px 0; border-top: 1px solid var(--paper-line); }
.press li:first-child { border-top: none; }
.press .meta { font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-muted); margin-bottom: 6px; }
.press .headline { font-size: 1.15rem; color: var(--ink-primary); }
.press a:hover .headline { color: var(--accent); }

/* Social */
.social { display: flex; gap: 20px; align-items: center; margin-top: 32px; }
.social a { color: var(--ink-muted); }
.social a:hover { color: var(--ink-primary); }
.social svg { width: 22px; height: 22px; }

/* Footer */
footer { border-top: 1px solid var(--paper-line); padding: 48px 0; }
.foot-inner { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.foot-links { display: flex; gap: 24px; flex-wrap: wrap; }
.foot-links a { color: var(--ink-secondary); font-size: 14px; }
.foot-meta { font-size: 13px; color: var(--ink-muted); }

.mt-s { margin-top: 16px; } .mt-m { margin-top: 28px; } .mt-l { margin-top: 44px; }

@media (max-width: 768px) {
  .hero-grid, .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .nav-links { gap: 18px; }
  .nav-links a:not(.btn) { display: none; }
  section { padding: 56px 0; }
  .portrait { max-width: 360px; margin: 0 auto; }
}