/* ============================================================
   ESAI TOKEN SPINE — decision 5 (one spine, four expressions)
   Shared semantic names; per-site values via <html data-theme>.
   Themes: headhunt (default) · agentrpo · execsearch · scoutiq
   Breakpoints (5, consolidated from 18): 1100 / 900 / 768 / 640 / 420
   ============================================================ */

:root,
[data-theme="headhunt"] {
  /* ground */
  --bg: #ffffff; --bg-alt: #fafaf9; --bg-muted: #f5f5f4;
  --bg-dark: #0a0a0a; --bg-card: #ffffff;
  --fg: #0a0a0a; --fg-1: #262626; --fg-2: #525252; --fg-3: #737373; --fg-4: #a3a3a3;
  --fg-inverse: #ffffff;
  --border: #e7e5e4; --border-strong: #d6d3d1;
  /* brand — emerald 600 (product) */
  --brand: #059669; --brand-hover: #047857; --brand-deep: #064e3b;
  --brand-soft: #ecfdf5; --brand-soft-2: #d1fae5; --brand-ring: rgba(5,150,105,.2);
  /* semantic */
  --danger: #dc2626; --warn: #d97706; --info: #0284c7;
  /* type — stacks stay distinct per site (decision 5) */
  --font-display: 'Inter', ui-sans-serif, system-ui, sans-serif;
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-serif: Georgia, serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-jp: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
  /* radii / shadow / layout / motion — shared scale, all themes */
  --r-xs: 4px; --r-sm: 6px; --r-md: 10px; --r-lg: 14px; --r-xl: 20px; --r-pill: 999px;
  --shadow-xs: 0 1px 2px 0 rgba(10,10,10,.04);
  --shadow-sm: 0 1px 3px 0 rgba(10,10,10,.06), 0 1px 2px 0 rgba(10,10,10,.04);
  --shadow-md: 0 4px 12px -2px rgba(10,10,10,.06), 0 2px 4px -2px rgba(10,10,10,.04);
  --shadow-lg: 0 20px 40px -12px rgba(10,10,10,.10), 0 8px 16px -8px rgba(10,10,10,.06);
  --shadow-brand: 0 12px 32px -8px rgba(5,150,105,.28);
  --max-w: 1200px; --max-w-narrow: 960px; --max-w-text: 680px;
  --ease: cubic-bezier(.2,.8,.2,1); --dur: 220ms;
}

/* agentrpo — cream editorial, Fraunces stays (it's doing real work) */
[data-theme="agentrpo"] {
  --bg: #F7F4ED; --bg-alt: #F1EDE3; --bg-muted: #EAE5D8;
  --bg-dark: #14130F; --bg-card: #FCFAF5;
  --fg: #14130F; --fg-1: #2B2A24; --fg-2: #56544A; --fg-3: #787566; --fg-4: #A5A192;
  --fg-inverse: #F7F4ED;
  --border: #DDD7C7; --border-strong: #C9C2AE;
  --brand: #047857; --brand-hover: #065F46; --brand-deep: #064e3b;
  --brand-soft: #E7F2EC; --brand-soft-2: #D3E8DD; --brand-ring: rgba(4,120,87,.2);
  --font-display: 'Fraunces', Georgia, serif;
  --font-sans: 'Inter', ui-sans-serif, system-ui, sans-serif;
  --font-serif: Georgia, serif;
  --font-jp: 'Shippori Mincho', 'Yu Mincho', serif;
  --shadow-brand: 0 12px 32px -8px rgba(4,120,87,.24);
}

/* execsearch — dark technical, IBM Plex */
[data-theme="execsearch"] {
  --bg: #0A0B0D; --bg-alt: #101216; --bg-muted: #16181D;
  --bg-dark: #000000; --bg-card: #101216;
  --fg: #F4F5F7; --fg-1: #E2E4E9; --fg-2: #A9ADB8; --fg-3: #7C8090; --fg-4: #565A68;
  --fg-inverse: #0A0B0D;
  --border: #23262E; --border-strong: #333742;
  --brand: #10B981; --brand-hover: #34D399; --brand-deep: #065F46;
  --brand-soft: rgba(16,185,129,.10); --brand-soft-2: rgba(16,185,129,.18);
  --brand-ring: rgba(16,185,129,.25);
  --font-display: 'IBM Plex Sans', ui-sans-serif, system-ui, sans-serif;
  --font-sans: 'IBM Plex Sans', ui-sans-serif, system-ui, sans-serif;
  --font-serif: Georgia, serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
  --font-jp: 'IBM Plex Sans JP', 'Noto Sans JP', sans-serif;
  --shadow-brand: 0 12px 32px -8px rgba(16,185,129,.30);
}

/* scoutiq — fourth expression: closest to headhunt's product language,
   under ESAI Agency identity → emerald-700 brand + one degree warmer ground */
[data-theme="scoutiq"] {
  --bg: #FDFCFA; --bg-alt: #F8F6F2; --bg-muted: #F1EEE8;
  --bg-dark: #0E0D0B; --bg-card: #ffffff;
  --fg: #0E0D0B; --fg-1: #29271F; --fg-2: #55524A; --fg-3: #76736A; --fg-4: #A5A299;
  --fg-inverse: #FDFCFA;
  --border: #E6E2D9; --border-strong: #D4CFC2;
  --brand: #047857; --brand-hover: #065F46; --brand-deep: #064e3b;
  --brand-soft: #E9F3EE; --brand-soft-2: #D5E9DF; --brand-ring: rgba(4,120,87,.2);
  --font-display: 'Inter', ui-sans-serif, system-ui, sans-serif;
  --font-sans: 'Inter', ui-sans-serif, system-ui, sans-serif;
  --font-serif: Georgia, serif;
  --font-jp: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --shadow-brand: 0 12px 32px -8px rgba(4,120,87,.24);
}

/* JA pages: <html lang="ja"> swaps the working stack and loosens tracking */
:lang(ja) body { font-family: var(--font-jp); letter-spacing: 0; }
:lang(ja) h1, :lang(ja) h2, :lang(ja) h3 { letter-spacing: 0; line-height: 1.35; font-feature-settings: "palt"; }
/* ============================================================
   ESAI BASE — components on the token spine (Phase 3)
   Class vocabulary carried from Design System v2 where devices
   survive (hero-jd-form, proof-strip, time-bars, footer-*) so
   nav.js / analytics.js keep working. 5 breakpoints:
   1100 / 900 / 768 / 640 / 420.
   ============================================================ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font-sans);
  font-size:16px;line-height:1.6;font-feature-settings:'cv11','ss01','ss03';
  -webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-hover)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:var(--r-xs)}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--fg);margin:0 0 .5em}
h1{font-size:clamp(36px,5.5vw,60px);line-height:1.05;letter-spacing:-.03em;font-weight:650}
h2{font-size:clamp(28px,4vw,44px);line-height:1.15;letter-spacing:-.02em;font-weight:650}
h3{font-size:clamp(20px,2.5vw,26px);letter-spacing:-.01em;font-weight:600}
h4{font-size:17px;font-weight:600}
p{margin:0 0 1em;color:var(--fg-1)}
.lead{font-size:19px;line-height:1.65;color:var(--fg-2)}
.mono{font-family:var(--font-mono)}
.muted{color:var(--fg-3)}
.brand-text{color:var(--brand)}

/* layout */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}
.container-narrow{max-width:var(--max-w-narrow);margin:0 auto;padding:0 24px}
.container-text{max-width:var(--max-w-text);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-sm{padding:48px 0}
.bg-alt{background:var(--bg-alt)}
.bg-dark{background:var(--bg-dark);color:var(--fg-inverse)}
.bg-dark h2,.bg-dark h3,.bg-dark p{color:var(--fg-inverse)}
.section-header{max-width:720px;margin:0 auto 56px;text-align:center}
.section-header .eyebrow{display:inline-block;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.12em;text-transform:uppercase;color:var(--brand);margin-bottom:12px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-sans);font-weight:600;
  font-size:15px;line-height:1;padding:13px 22px;border-radius:var(--r-md);border:1px solid transparent;
  cursor:pointer;transition:all var(--dur) var(--ease);text-decoration:none}
.btn-lg{font-size:16px;padding:16px 28px}
.btn-sm{font-size:14px;padding:9px 16px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-brand)}
.btn-primary:hover{background:var(--brand-hover);color:#fff;transform:translateY(-1px)}
.btn-secondary{background:var(--bg-card);color:var(--fg);border-color:var(--border-strong);box-shadow:var(--shadow-xs)}
.btn-secondary:hover{border-color:var(--fg-3);color:var(--fg)}
.btn-ghost{background:transparent;color:var(--fg-1)}
.btn-ghost:hover{background:var(--bg-muted);color:var(--fg)}
.btn-arrow::after{content:"→";transition:transform var(--dur) var(--ease)}
.btn-arrow:hover::after{transform:translateX(3px)}

/* nav */
.site-nav{position:sticky;top:0;z-index:50;background:var(--bg);background:color-mix(in srgb,var(--bg) 82%,transparent);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-inner{max-width:var(--max-w);margin:0 auto;padding:0 24px;height:64px;
  display:flex;align-items:center;gap:28px}
.nav-inner .logo img{height:28px;width:auto}
.nav-links{display:flex;gap:22px;margin-left:8px}
.nav-links a{color:var(--fg-2);font-size:14.5px;font-weight:500}
.nav-links a:hover{color:var(--fg)}
.nav-spacer{flex:1}
.lang-toggle{font-family:var(--font-mono);font-size:12.5px;color:var(--fg-3)}
.lang-toggle a{color:var(--fg-3)} .lang-toggle a:hover,.lang-toggle .active{color:var(--fg)}
.nav-cta{margin-left:4px}
.mobile-menu-btn{display:none;background:none;border:1px solid var(--border);border-radius:var(--r-sm);
  padding:8px 10px;cursor:pointer;color:var(--fg)}

/* announce bar */
.announce-bar{background:var(--brand-deep);color:#fff;text-align:center;font-size:13.5px;padding:9px 16px}
.announce-bar a{color:#fff;text-decoration:underline;text-underline-offset:3px}

/* hero */
.hero{padding:88px 0 72px;position:relative}
.hero-inner{max-width:var(--max-w-narrow);margin:0 auto;padding:0 24px;text-align:center}
.hero-sub{max-width:640px;margin:20px auto 0;font-size:18px;line-height:1.7;color:var(--fg-2)}
.hero-sub .attribution{display:block;margin-top:10px;font-size:15.5px;color:var(--fg-3)}
.hero-microproof{display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:center;margin-top:22px;
  font-size:13.5px;color:var(--fg-3)}
.hero-microproof span{display:inline-flex;align-items:center;gap:7px}
.hero-microproof span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.hero-jd-form{position:relative;max-width:680px;margin:40px auto 0;background:var(--bg-card);
  border:1px solid var(--border-strong);border-radius:var(--r-xl);padding:20px;box-shadow:var(--shadow-lg);text-align:left}
.hero-jd-label{font-size:13px;font-weight:600;color:var(--fg-2);display:block;margin:0 0 8px 2px}
.hero-jd-textarea{width:100%;min-height:120px;resize:vertical;border:1px solid var(--border);
  border-radius:var(--r-md);padding:14px;font:inherit;font-size:16px;color:var(--fg);background:var(--bg)}
.hero-jd-textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-ring)}
.hero-jd-counter{font-size:12.5px;color:var(--fg-3);margin-top:6px}
.hero-jd-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:14px;flex-wrap:wrap}
.hero-jd-note{font-size:13.5px;color:var(--fg-3);margin:0;max-width:340px}

/* proof strip */
.proof-strip{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--bg-alt)}
.proof-inner{max-width:var(--max-w);margin:0 auto;padding:34px 24px;display:grid;
  grid-template-columns:auto repeat(4,1fr);gap:28px;align-items:center}
.proof-label{font-size:12.5px;line-height:1.5;color:var(--fg-3);font-family:var(--font-mono);
  text-transform:uppercase;letter-spacing:.08em}
.proof-stat{text-align:center}
.proof-stat b{display:block;font-size:clamp(26px,3vw,36px);font-weight:700;letter-spacing:-.02em;color:var(--fg)}
.proof-stat span{font-size:13px;color:var(--fg-3)}
.proof-foot{grid-column:1/-1;font-size:12.5px;color:var(--fg-4);margin:0}

/* time bars (week chart) */
.time-bars{max-width:720px;margin:0 auto;display:grid;gap:14px}
.time-row{display:grid;grid-template-columns:200px 1fr 72px;gap:14px;align-items:center;font-size:14.5px}
.time-row .label{color:var(--fg-2);text-align:right}
.time-bar{height:26px;border-radius:var(--r-sm);position:relative;overflow:hidden;background:var(--bg-muted)}
.time-bar i{position:absolute;inset:0;border-radius:inherit;display:block}
.time-bar.red i{background:#fca5a5;width:var(--w)}
.time-bar.amber i{background:#fcd34d;width:var(--w)}
.time-bar.green i{background:var(--brand-soft-2);width:var(--w);border:1px solid var(--brand)}
.time-bar.hatch i{width:var(--w);background:repeating-linear-gradient(45deg,#fca5a5 0 6px,#fee2e2 6px 12px);opacity:.8}
.time-hours{font-family:var(--font-mono);font-size:13px;color:var(--fg-2)}
.time-callout{max-width:720px;margin:26px auto 0;padding:16px 20px;border-left:3px solid var(--brand);
  background:var(--brand-soft);border-radius:0 var(--r-md) var(--r-md) 0;font-size:15.5px;color:var(--fg-1)}

/* the four beats — signature device */
.beats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:beat}
.beat{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:26px 24px;position:relative;box-shadow:var(--shadow-xs)}
.beat-step{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--fg-4);display:flex;align-items:center;gap:10px;margin-bottom:14px}
.beat-step::before{counter-increment:beat;content:counter(beat);width:24px;height:24px;border-radius:50%;
  border:1.5px solid var(--border-strong);display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--fg-2)}
.beat h3{font-size:19px;margin-bottom:8px}
.beat p{font-size:14.5px;color:var(--fg-2);margin:0}
.beat-stat{margin-top:14px;font-family:var(--font-mono);font-size:12.5px;color:var(--brand-deep);
  background:var(--brand-soft);border-radius:var(--r-sm);padding:6px 10px;display:inline-block}
.beat.beat-handled{background:linear-gradient(180deg,var(--brand-soft),var(--bg-card) 85%);
  border-color:var(--brand);box-shadow:var(--shadow-md)}
.beat.beat-handled .beat-step::before{background:var(--brand);border-color:var(--brand);color:#fff}
.beat-entity{margin-top:14px;font-size:12.5px;color:var(--fg-3);border-top:1px dashed var(--border-strong);padding-top:12px}

/* chips (screening guidance) */
.chip{display:inline-block;font-size:13px;padding:6px 12px;border-radius:var(--r-pill);
  border:1px solid var(--border-strong);background:var(--bg-card);color:var(--fg-1);margin:0 6px 8px 0}
.chip-brand{border-color:var(--brand);background:var(--brand-soft);color:var(--brand-deep)}
.chip-danger{border-color:#fecaca;background:#fef2f2;color:#991b1b;text-decoration:line-through}

/* generic cards */
.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--shadow-xs)}
.card h3{margin-bottom:10px}
.card p{font-size:15px;color:var(--fg-2)}
.card .card-link{font-weight:600;font-size:14.5px}

/* funnel mini */
.funnel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:760px;margin:0 auto}
.funnel-cell{text-align:center;padding:18px 10px;border:1px solid var(--border);border-radius:var(--r-md);background:var(--bg-card)}
.funnel-n{font-size:24px;font-weight:700;color:var(--brand-deep);display:block}
.funnel-cell span{font-size:12.5px;color:var(--fg-3)}

/* demo module */
.demo-shell{max-width:860px;margin:0 auto;border:1px solid var(--border-strong);border-radius:var(--r-xl);
  overflow:hidden;box-shadow:var(--shadow-lg);background:var(--bg-card)}
.demo-topbar{display:flex;gap:6px;padding:12px 16px;border-bottom:1px solid var(--border);background:var(--bg-alt)}
.demo-topbar i{width:10px;height:10px;border-radius:50%;background:var(--border-strong)}
.demo-body{aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;
  color:var(--fg-3);font-size:14.5px;text-align:center;padding:24px}

/* fork */
.fork{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:860px;margin:0 auto}
.fork a{display:block;padding:32px 30px;border:1px solid var(--border);border-radius:var(--r-lg);
  background:var(--bg-card);color:var(--fg);transition:all var(--dur) var(--ease);box-shadow:var(--shadow-xs)}
.fork a:hover{border-color:var(--brand);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.fork h3{margin-bottom:6px}
.fork p{font-size:14.5px;color:var(--fg-2);margin:0 0 12px}
.fork .go{font-weight:600;color:var(--brand);font-size:14.5px}

/* close */
.close-cta{text-align:center}
.close-cta .hero-microproof{margin-top:18px}
.close-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:26px}

/* footer */
.site-footer{border-top:1px solid var(--border);background:var(--bg-alt);padding:64px 0 32px;font-size:14px}
.footer-grid{max-width:var(--max-w);margin:0 auto;padding:0 24px;display:grid;
  grid-template-columns:1.4fr repeat(4,1fr);gap:32px}
.footer-col h3{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--fg-3);margin-bottom:14px}
.footer-col a{display:block;color:var(--fg-2);padding:4px 0;font-size:13.5px}
.footer-col a:hover{color:var(--fg)}
.footer-col p{font-size:13px;color:var(--fg-3);margin-top:14px}
.footer-col .logo img{height:26px;width:auto}
.footer-regulatory{max-width:var(--max-w);margin:40px auto 0;padding:20px 24px 0;border-top:1px solid var(--border)}
.footer-regulatory p{font-size:12.5px;color:var(--fg-3);line-height:1.7}
.footer-bottom{max-width:var(--max-w);margin:18px auto 0;padding:0 24px;display:flex;
  justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--fg-4)}

/* responsive — 5 stops */
@media (max-width:900px){
  .beats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
  .proof-inner{grid-template-columns:repeat(2,1fr)}
  .proof-label{grid-column:1/-1;text-align:center}
}
@media (max-width:768px){
  .nav-links{display:none}
  .mobile-menu-btn{display:inline-flex}
  .section{padding:72px 0}.section-tight{padding:56px 0}
  .grid-3,.grid-4{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .beats,.fork,.grid-2,.grid-3,.grid-4,.funnel-grid{grid-template-columns:1fr}
  .time-row{grid-template-columns:1fr;gap:6px}
  .time-row .label{text-align:left}
  .time-hours{order:-1}
  .hero{padding:64px 0 48px}
  .hero-jd-foot{flex-direction:column;align-items:stretch}
  .hero-jd-foot .btn{width:100%;justify-content:center}
}
@media (max-width:420px){
  body{font-size:15px}
  .container,.container-narrow,.container-text,.nav-inner{padding-left:18px;padding-right:18px}
  .hero-jd-textarea{font-size:16px} /* iOS no-zoom */
}
@media print{.site-nav,.announce-bar,.hero-jd-form,.close-actions{display:none}}

/* library index */
.lib-list{margin:0;max-width:760px;margin-inline:auto}
.lib-item{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:13px 0;border-bottom:1px solid var(--border)}
.lib-item a{font-weight:500}
.lib-filter{margin-right:8px}
