/* ============================================================
   One Global Mind — shared theme system
   Three directions: signal (dark) · paper (light) · press (b&w)
   Palette anchors: #AA1111 red · #333333 · #EBEBEB · black/white
   ============================================================ */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
::selection { background: var(--accent); color: #fff; }

/* ---------- Fonts ---------- */
:root {
  --f-display: 'Space Grotesk', system-ui, sans-serif;
  --f-body: 'Newsreader', Georgia, serif;
  --f-sans: 'Atkinson Hyperlegible', system-ui, sans-serif;
  --f-mono: 'Atkinson Hyperlegible', system-ui, sans-serif;
  --red: #AA1111;
  --red-bright: #C9252B;
  --maxw: 1180px;
  --pad: clamp(20px, 5vw, 64px);
}

/* ============================================================
   DIRECTION: SIGNAL (dark, systems / technical)
   ============================================================ */
[data-direction="signal"] {
  --bg: #0D0D0F;
  --bg-2: #141417;
  --bg-3: #1B1B1F;
  --ink: #ECECEC;
  --ink-2: #B7B7B9;
  --ink-3: #7C7C80;
  --line: rgba(236,236,236,0.13);
  --line-2: rgba(236,236,236,0.26);
  --accent: var(--red);
  --accent-text: oklch(0.59 0.205 28);
  --accent-ink: #fff;

  --head-font: var(--f-display);
  --head-weight: 500;
  --head-spacing: -0.02em;
  --lead-font: var(--f-sans);
  --body-font: var(--f-sans);
  --eyebrow-color: var(--accent-text);
  --hero-align: left;
}

/* ============================================================
   DIRECTION: PAPER (light editorial, serif, calm)
   ============================================================ */
[data-direction="paper"] {
  --bg: #F7F6F2;
  --bg-2: #FFFFFF;
  --bg-3: #EBEBEB;
  --ink: #1A1A1A;
  --ink-2: #4A4A48;
  --ink-3: #8A887F;
  --line: rgba(26,26,26,0.14);
  --line-2: rgba(26,26,26,0.30);
  --accent: var(--red);
  --accent-text: var(--red);
  --accent-ink: #fff;

  --head-font: var(--f-body);
  --head-weight: 500;
  --head-spacing: -0.012em;
  --lead-font: var(--f-body);
  --body-font: var(--f-body);
  --eyebrow-color: var(--ink-3);
  --hero-align: center;
}

/* ============================================================
   DIRECTION: PRESS (high-contrast b&w, big type, red punctuation)
   ============================================================ */
[data-direction="press"] {
  --bg: #FFFFFF;
  --bg-2: #111111;
  --bg-3: #EBEBEB;
  --ink: #111111;
  --ink-2: #4A4A4A;
  --ink-3: #8A8A8A;
  --line: rgba(17,17,17,0.16);
  --line-2: rgba(17,17,17,0.32);
  --accent: var(--red);
  --accent-text: var(--red);
  --accent-ink: #fff;

  --head-font: var(--f-display);
  --head-weight: 700;
  --head-spacing: -0.03em;
  --lead-font: var(--f-body);
  --body-font: var(--f-body);
  --eyebrow-color: var(--accent-text);
  --hero-align: left;
}

/* ---------- Base ---------- */
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body-font);
  font-size: 18px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding-left: var(--pad); padding-right: var(--pad); }
.measure { max-width: 60ch; }

/* ---------- Eyebrow / kicker ---------- */
.eyebrow {
  font-family: var(--f-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--eyebrow-color);
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.eyebrow .tick { width: 22px; height: 1px; background: currentColor; opacity: .6; }

/* ---------- Headings ---------- */
h1, h2, h3 { font-family: var(--head-font); font-weight: var(--head-weight); letter-spacing: var(--head-spacing); line-height: 1.05; margin: 0; text-wrap: balance; }
.h-xl { font-size: clamp(2.6rem, 6.2vw, 5rem); line-height: 1.0; }
.h-lg { font-size: clamp(2rem, 4.2vw, 3.3rem); line-height: 1.04; }
.h-md { font-size: clamp(1.5rem, 2.6vw, 2.1rem); line-height: 1.1; }
.lead { font-family: var(--lead-font); font-size: clamp(1.15rem, 1.7vw, 1.4rem); line-height: 1.5; color: var(--ink); }
p { margin: 0 0 1.1em; }
.dim { color: var(--ink-2); }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-in { max-width: var(--maxw); margin: 0 auto; padding: 16px var(--pad);
  display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-family: var(--f-mono);
  font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink); }
.brand .mark { width: 13px; height: 13px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent); flex: none; }
.brand b { font-weight: 600; }
.menu { display: flex; align-items: center; gap: clamp(14px, 2.4vw, 30px); }
.menu a { font-family: var(--f-mono); font-size: 12.5px; letter-spacing: 0.04em; color: var(--ink-2);
  position: relative; padding: 4px 0; transition: color .2s; }
.menu a:hover, .menu a.active { color: var(--ink); }
.menu a.active::after { content:''; position:absolute; left:0; right:0; bottom:-2px; height:2px; background: var(--accent-text); }
.menu a.cta-link { color: var(--accent-text); }
.nav-toggle { display: none; }

/* ============================================================
   SECTION SCAFFOLD
   ============================================================ */
section { position: relative; }
.sec { padding: clamp(64px, 9vw, 130px) 0; }
.sec-head { display: flex; flex-direction: column; gap: 18px; margin-bottom: clamp(36px, 5vw, 64px); }
.sec-num { font-family: var(--f-mono); font-size: 12px; letter-spacing: .1em; color: var(--ink-3); }
.divide { border: 0; border-top: 1px solid var(--line); margin: 0; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn { display: inline-flex; align-items: center; gap: 10px; font-family: var(--f-mono);
  font-size: 13px; letter-spacing: 0.04em; text-transform: uppercase; padding: 15px 24px;
  border: 1px solid var(--line-2); border-radius: 2px; color: var(--ink); cursor: pointer;
  background: transparent; transition: all .2s ease; }
.btn .arr { transition: transform .2s ease; }
.btn:hover .arr { transform: translateX(4px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--red-bright); border-color: var(--red-bright); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }

/* ============================================================
   HERO
   ============================================================ */
.hero { padding: clamp(56px, 11vw, 150px) 0 clamp(48px, 7vw, 96px); text-align: var(--hero-align); }
.hero-in { display: flex; flex-direction: column; gap: clamp(22px, 3vw, 34px); align-items: var(--hero-align); }
.hero[ data-align] { }
.hero .lead { max-width: 62ch; }
.hero .btn-row { margin-top: 6px; }
.hero-epi { margin-top: clamp(28px, 4vw, 48px); padding-top: 26px; border-top: 1px solid var(--line);
  font-family: var(--f-body); font-style: italic; font-size: 1.15rem; color: var(--ink-2); max-width: 56ch; }
.hero-epi cite { display: block; margin-top: 10px; font-style: normal; font-family: var(--f-mono);
  font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
[data-direction="paper"] .hero-in { margin: 0 auto; }
[data-direction="paper"] .hero-epi { margin-left: auto; margin-right: auto; }

/* ============================================================
   STAT BAND (why now)
   ============================================================ */
.statband { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line);
  border: 1px solid var(--line); margin-top: clamp(30px, 4vw, 52px); }
.stat { background: var(--bg); padding: clamp(22px, 3vw, 34px); }
.stat .n { font-family: var(--head-font); font-weight: var(--head-weight); letter-spacing: -0.02em;
  font-size: clamp(2rem, 4vw, 3.1rem); line-height: 1; color: var(--ink); }
.stat .n em { font-style: normal; color: var(--accent-text); }
.stat .k { margin-top: 12px; font-family: var(--f-mono); font-size: 11.5px; letter-spacing: .04em;
  line-height: 1.5; text-transform: uppercase; color: var(--ink-3); }

/* ============================================================
   INSIGHTS
   ============================================================ */
.insights { display: grid; gap: 0; }
.insight { display: grid; grid-template-columns: 88px 1fr; gap: clamp(18px, 3vw, 40px);
  padding: clamp(28px, 4vw, 44px) 0; border-top: 1px solid var(--line); align-items: start; }
.insight:last-child { border-bottom: 1px solid var(--line); }
.insight .ix { font-family: var(--f-mono); font-size: 13px; color: var(--accent-text); letter-spacing: .1em; padding-top: 8px; }
.insight h3 { margin-bottom: 12px; }
.insight p { color: var(--ink-2); margin: 0; max-width: 64ch; }
.insight p strong { color: var(--ink); font-weight: 600; }

/* ============================================================
   CONTRAST (Before AI / With AI)
   ============================================================ */
.contrast-grid { display: grid; grid-template-columns: 180px 1fr 1fr; border: 1px solid var(--line); }
.contrast-grid > div { padding: clamp(16px, 2vw, 24px); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.contrast-grid > div:nth-child(-n+3) { border-top: 0; }
.contrast-grid > div:nth-child(3n+1) { border-left: 0; }
.cg-corner { background: transparent; }
.cg-head { font-family: var(--f-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; }
.cg-head.before { color: var(--ink-3); }
.cg-head.after { color: var(--accent-text); }
.cg-row-label { font-family: var(--f-mono); font-size: 11.5px; letter-spacing: .04em; text-transform: uppercase; color: var(--ink-3); }
.contrast-grid .cell { color: var(--ink-2); font-size: 16px; line-height: 1.45; }
.contrast-grid .cell.after { color: var(--ink); }
[data-direction="signal"] .contrast-grid .col-after, [data-direction="press"] .contrast-grid .col-after { background: var(--bg-2); }

/* ============================================================
   TIMELINE — Four Extensions
   ============================================================ */
.timeline-block { background: var(--bg-2); border: 1px solid var(--line); padding: clamp(28px, 4vw, 56px); }
[data-direction="press"] .timeline-block { background: var(--bg-2); color: #ECECEC; }
[data-direction="press"] .timeline-block { --ink: #ECECEC; --ink-2:#B7B7B9; --ink-3:#8A8A8A; --line: rgba(236,236,236,.14); }
.tl-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px;
  padding-bottom: 26px; margin-bottom: 40px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.tl-head .t { font-family: var(--f-mono); font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--ink); }
.tl-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.tl-node { padding-right: 24px; position: relative; }
.tl-era { font-family: var(--f-mono); font-size: 11.5px; letter-spacing: .06em; color: var(--accent-text); margin-bottom: 22px; }
.tl-disc { width: 58px; height: 58px; border-radius: 50%; border: 1.5px solid var(--accent-text);
  display: flex; align-items: center; justify-content: center; font-family: var(--head-font);
  font-weight: 600; font-size: 22px; color: var(--ink);
  box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 12%, transparent); }
.tl-conn { position: absolute; top: calc(22px + 29px); left: 58px; right: 0; height: 1.5px;
  background: linear-gradient(to right, var(--accent-text), color-mix(in srgb, var(--accent-text) 25%, transparent)); }
.tl-conn::after { content: '▸'; position: absolute; right: 0; top: -8px; color: var(--accent-text); font-size: 13px; }
.tl-node:last-child .tl-conn { display: none; }
.tl-title { margin-top: 26px; font-family: var(--head-font); font-weight: 600; font-size: 1.1rem;
  letter-spacing: -0.01em; text-transform: uppercase; }
[data-direction="paper"] .tl-title { text-transform: none; }
.tl-ext { margin-top: 8px; font-family: var(--f-body); font-style: italic; color: var(--accent-text); font-size: 1rem; line-height: 1.25; min-height: 2.5em; }
.tl-sub { margin-top: 6px; color: var(--ink-2); font-size: 15px; }
.tl-foot { display: flex; justify-content: space-between; align-items: center; gap: 16px;
  margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.tl-foot .l { font-family: var(--f-mono); font-size: 11.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); }
.tl-foot .r { font-family: var(--f-mono); font-size: 11.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--accent-text); }

/* ============================================================
   IMPLICATIONS — role cards
   ============================================================ */
.roles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.role { background: var(--bg); padding: clamp(26px, 3vw, 40px); display: flex; flex-direction: column; gap: 14px; }
.role .who { font-family: var(--f-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--accent-text); }
.role h3 { font-size: 1.35rem; }
.role p { margin: 0; color: var(--ink-2); font-size: 16px; }
.role.wide { grid-column: 1 / -1; }

/* ============================================================
   CTA
   ============================================================ */
.cta-block { background: var(--bg-2); border: 1px solid var(--line); padding: clamp(40px, 6vw, 80px);
  display: flex; flex-direction: column; gap: 26px; align-items: flex-start; }
[data-direction="press"] .cta-block { background: var(--bg-2); color: #ECECEC; --ink:#ECECEC; --ink-2:#B7B7B9; --line: rgba(236,236,236,.14); }
[data-direction="signal"] .cta-block { background: linear-gradient(135deg, var(--bg-2), var(--bg)); }
.cta-block h2 { max-width: 18ch; }

/* ============================================================
   AUTHOR NOTE
   ============================================================ */
.author { display: grid; grid-template-columns: 260px 1fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
.author-photo { position: relative; }
.author-photo img { width: 100%; border-radius: 2px; filter: grayscale(1) contrast(1.02); }
.author-photo .tag { position: absolute; bottom: 12px; left: 12px; font-family: var(--f-mono);
  font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: #ECECEC;
  background: rgba(0,0,0,.55); padding: 5px 9px; -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.author-body h2 { margin-bottom: 8px; }
.author-role { font-family: var(--f-mono); font-size: 12.5px; letter-spacing: .06em; color: var(--accent-text);
  text-transform: uppercase; margin-bottom: 22px; }
.author-body p { color: var(--ink-2); max-width: 62ch; font-size: 16.5px; }
.author-body p strong { color: var(--ink); font-weight: 600; }
.connect { display: inline-flex; align-items: center; gap: 10px; margin-top: 10px; font-family: var(--f-mono);
  font-size: 13px; letter-spacing: .04em; color: var(--ink); border-bottom: 1px solid var(--accent-text); padding-bottom: 3px; }
.connect:hover { color: var(--accent-text); }
.connect svg { width: 16px; height: 16px; }

/* ============================================================
   FOOTER
   ============================================================ */
.foot { border-top: 1px solid var(--line); padding: clamp(40px, 6vw, 70px) 0 50px; }
.foot-in { display: flex; justify-content: space-between; align-items: flex-start; gap: 28px; flex-wrap: wrap; }
.foot .brand { margin-bottom: 16px; }
.foot p { color: var(--ink-3); font-family: var(--f-mono); font-size: 11.5px; letter-spacing: .04em; max-width: 40ch; line-height: 1.7; }
.foot-links { display: flex; flex-direction: column; gap: 10px; }
.foot-links a { font-family: var(--f-mono); font-size: 12.5px; letter-spacing: .04em; color: var(--ink-2); }
.foot-links a:hover { color: var(--accent-text); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 880px) {
  body { font-size: 17px; }
  .statband { grid-template-columns: repeat(2, 1fr); }
  .tl-grid { grid-template-columns: 1fr 1fr; gap: 36px 0; }
  .tl-conn { display: none; }
  .contrast-grid { grid-template-columns: 1fr; }
  .contrast-grid > div { border-left: 0 !important; }
  .contrast-grid .cg-corner { display: none; }
  .roles { grid-template-columns: 1fr; }
  .author { grid-template-columns: 1fr; }
  .author-photo { max-width: 240px; }
  .insight { grid-template-columns: 44px 1fr; gap: 14px; }
}
@media (max-width: 560px) {
  .statband { grid-template-columns: 1fr; }
  .tl-grid { grid-template-columns: 1fr; gap: 30px; }
  .menu .hide-sm { display: none; }
}

/* ---------- Reveal-on-scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }