/* ==========================================================================
   AI Future Lab — shared stylesheet
   Typography: Instrument Serif (display) + DM Sans (body)
   Palette: ink/paper/cream base, blue=parents, teal=schools, indigo=pros, coral accent
   Layout: wide-desktop (1440 max) with full-bleed dark sections, mobile-first responsive
   ========================================================================== */

:root{
  --ink:#1a1a2e;
  --paper:#faf9f7;
  --cream:#f3f1ed;
  --accent:#2563eb;
  --accent-deep:#1d4ed8;
  --accent-glow:#3b82f6;
  --accent-soft:#dbeafe;
  --teal:#0d9488;
  --teal-deep:#0f766e;
  --teal-glow:#14b8a6;
  --teal-soft:#f0fdfa;
  --indigo:#4a3f6b;
  --indigo-deep:#362d52;
  --indigo-glow:#6b5d94;
  --indigo-soft:#ece9f2;
  --coral:#f97316;
  --coral-soft:#fff7ed;
  --text:#2d2d3a;
  --text-mid:#555568;
  --text-light:#8888a0;
  --border:#e2e0db;
  --serif:"Instrument Serif", Georgia, serif;
  --sans:"DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;

  /* layout */
  --max:1440px;
  --max-readable:1180px;   /* tighter cap for prose-heavy sections */
  --pad:clamp(20px, 4vw, 56px);
  --sec-y:clamp(64px, 8vw, 120px);
  --radius:18px;
  --radius-sm:10px;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body{
  font-family:var(--sans);color:var(--text);background:var(--paper);
  line-height:1.6;font-size:17px;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}

h1,h2,h3,h4{font-family:var(--serif);font-weight:400;color:var(--ink);letter-spacing:-0.01em;line-height:1.08}
em{font-style:italic}
p{text-wrap:pretty}

.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--pad)}
.wrap-narrow{max-width:var(--max-readable);margin:0 auto;padding:0 var(--pad)}

/* ------- NAV ------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(250,249,247,0.78);
  backdrop-filter:blur(18px) saturate(1.6);
  -webkit-backdrop-filter:blur(18px) saturate(1.6);
  border-bottom:1px solid transparent;
  transition:border-color .3s, box-shadow .3s, background .3s;
}
.nav.scrolled{
  border-bottom-color:rgba(0,0,0,0.06);
  box-shadow:0 1px 0 rgba(0,0,0,0.02), 0 14px 30px -24px rgba(26,26,46,0.18);
}
.nav-inner{
  max-width:var(--max);margin:0 auto;
  height:68px;display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--pad);gap:24px;
}
.brand{
  display:inline-flex;align-items:center;
  font-family:var(--sans);font-weight:600;
  font-size:15px;letter-spacing:0.18em;text-transform:uppercase;
  color:var(--ink);
}
.brand .partnership{display:none}

.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{font-size:14.5px;font-weight:500;color:var(--text-mid);transition:color .2s}
.nav-links a:hover{color:var(--ink)}
.nav-links a.active{color:var(--ink)}
.nav-cta{
  background:var(--ink);color:#fff !important;
  padding:9px 18px;border-radius:999px;
  font-size:13.5px !important;font-weight:600 !important;
  transition:background .2s, transform .15s;
}
.nav-cta:hover{background:#000;transform:translateY(-1px)}

/* hamburger */
.nav-burger{
  display:none;
  width:42px;height:42px;border-radius:10px;
  background:transparent;border:1px solid var(--border);
  position:relative;
}
.nav-burger span{
  position:absolute;left:11px;right:11px;height:1.6px;background:var(--ink);
  transition:transform .25s, top .25s, opacity .15s;
}
.nav-burger span:nth-child(1){top:14px}
.nav-burger span:nth-child(2){top:20px}
.nav-burger span:nth-child(3){top:26px}
.nav-burger.open span:nth-child(1){top:20px;transform:rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){top:20px;transform:rotate(-45deg)}

@media (max-width:880px){
  .nav-burger{display:block}
  .nav-links{
    position:fixed;top:68px;left:0;right:0;
    background:rgba(250,249,247,0.96);
    backdrop-filter:blur(20px) saturate(1.6);
    -webkit-backdrop-filter:blur(20px) saturate(1.6);
    flex-direction:column;align-items:stretch;gap:0;
    padding:14px var(--pad) 28px;
    border-bottom:1px solid var(--border);
    transform:translateY(-130%);
    transition:transform .3s cubic-bezier(.16,1,.3,1);
    box-shadow:0 22px 40px -24px rgba(26,26,46,0.18);
  }
  .nav-links.open{transform:translateY(0)}
  .nav-links a{
    padding:14px 4px;font-size:17px;
    border-bottom:1px solid var(--border);
  }
  .nav-links a:last-child{border-bottom:0}
  .nav-links .nav-cta{
    margin-top:14px;text-align:center;border-bottom:0 !important;
    padding:14px 18px !important;font-size:15px !important;
  }
}

/* ------- SECTION HELPERS ------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--sans);font-size:12px;font-weight:600;
  letter-spacing:0.16em;text-transform:uppercase;color:var(--accent);
}
.eyebrow::before{content:"";width:18px;height:1px;background:currentColor;opacity:.55}
.eyebrow.teal{color:var(--teal)}
.eyebrow.muted{color:var(--text-mid)}
.eyebrow.light{color:#93c5fd}
.eyebrow.teal-light{color:#5eead4}
.eyebrow.indigo{color:var(--indigo)}
.eyebrow.indigo-light{color:#c4b8e0}

.sec-head{max-width:760px;margin-bottom:56px}
.sec-head .eyebrow{margin-bottom:18px}
.sec-head h2{font-size:clamp(34px,4.8vw,64px);margin-bottom:16px}
.sec-head h2 em{color:var(--accent)}
.sec-head.teal h2 em{color:var(--teal)}
.sec-head p{font-size:clamp(16px,1.4vw,19px);color:var(--text-mid);line-height:1.6;max-width:60ch}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center .eyebrow{justify-content:center}
.sec-head.center p{margin-left:auto;margin-right:auto}

section{padding:var(--sec-y) 0}

/* dark sections */
.bg-ink{background:var(--ink);color:#e4e4ec;position:relative;overflow:hidden}
.bg-ink h1,.bg-ink h2,.bg-ink h3{color:#fff}
.bg-ink .sec-head p{color:rgba(255,255,255,0.6)}
.bg-ink::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(1000px 500px at 15% -10%, rgba(37,99,235,0.18), transparent 60%),
    radial-gradient(800px 500px at 90% 110%, rgba(13,148,136,0.14), transparent 60%);
}
.bg-ink.teal-glow::before{
  background:
    radial-gradient(1000px 500px at 20% -10%, rgba(13,148,136,0.22), transparent 60%),
    radial-gradient(800px 500px at 90% 100%, rgba(37,99,235,0.12), transparent 60%);
}
.bg-ink > *{position:relative;z-index:1}

.bg-cream{background:var(--cream)}

/* ------- BUTTONS ------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;border-radius:999px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform .15s, background .2s, color .2s, border-color .2s, box-shadow .2s;
  font-family:var(--sans);
  white-space:nowrap;
}
.btn svg{width:16px;height:16px;transition:transform .2s}
.btn:hover svg{transform:translateX(3px)}
.btn.lg{padding:17px 30px;font-size:16px}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:var(--accent-deep);transform:translateY(-2px);box-shadow:0 10px 30px -12px rgba(37,99,235,0.5)}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);transform:translateY(-2px);box-shadow:0 10px 30px -12px rgba(37,99,235,0.5)}
.btn-teal{background:var(--teal);color:#fff}
.btn-teal:hover{background:var(--teal-deep);transform:translateY(-2px);box-shadow:0 10px 30px -12px rgba(13,148,136,0.5)}
.btn-indigo{background:var(--indigo);color:#fff}
.btn-indigo:hover{background:var(--indigo-deep);transform:translateY(-2px);box-shadow:0 10px 30px -12px rgba(74,63,107,0.55)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--ink);background:#fff}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,0.22)}
.btn-ghost-light:hover{border-color:#fff;background:rgba(255,255,255,0.06)}

/* ------- HERO (shared scaffold) ------- */
.hero{
  padding-top:calc(68px + clamp(40px, 7vw, 96px));
  padding-bottom:clamp(56px,8vw,110px);
  position:relative;overflow:hidden;
  min-height:calc(100vh - 0px); /* full viewport on desktop */
  display:flex;align-items:center;
}
@media (max-width:880px){
  .hero{min-height:0}
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(900px 600px at 85% 5%, rgba(37,99,235,0.06), transparent 60%),
    radial-gradient(700px 600px at 0% 90%, rgba(249,115,22,0.045), transparent 60%);
}
.hero > *{position:relative;z-index:1;width:100%}
.hero .kicker{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 14px;border-radius:999px;
  background:var(--accent-soft);color:var(--accent-deep);
  font-size:12.5px;font-weight:600;letter-spacing:0.1em;text-transform:uppercase;
}
.hero .kicker .dot{
  width:7px;height:7px;border-radius:999px;background:var(--accent);
  animation:pulse 2s infinite;
}
.hero .kicker.teal{background:var(--teal-soft);color:var(--teal-deep)}
.hero .kicker.teal .dot{background:var(--teal)}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.4)}}

.hero h1{
  font-size:clamp(40px, 6vw, 96px);line-height:1.02;margin:24px 0 24px;
  max-width:22ch;
}
.hero h1 em{color:var(--accent)}
.hero.teal-hero h1 em{color:var(--teal)}
.hero-sub{
  font-size:clamp(17px,1.4vw,22px);line-height:1.55;color:var(--text-mid);
  max-width:62ch;margin-bottom:36px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:48px}

/* path cards (home hero) */
.paths{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
  padding-top:36px;border-top:1px solid var(--border);
}
@media (max-width:740px){.paths{grid-template-columns:1fr}}
.path{
  display:flex;align-items:center;gap:16px;
  padding:22px 24px;background:#fff;
  border:1px solid var(--border);border-radius:var(--radius);
  transition:transform .2s, box-shadow .2s, border-color .2s;
  cursor:pointer;
}
.path:hover{transform:translateY(-2px);box-shadow:0 18px 40px -24px rgba(26,26,46,0.22);border-color:#d5d3cd}
.path-icon{
  width:48px;height:48px;border-radius:12px;
  display:grid;place-items:center;flex-shrink:0;
}
.path-icon.blue{background:var(--accent-soft);color:var(--accent)}
.path-icon.teal{background:var(--teal-soft);color:var(--teal)}
.path-icon svg{width:22px;height:22px}
.path-body{flex:1;min-width:0}
.path-eye{
  font-size:11.5px;font-weight:600;letter-spacing:0.12em;text-transform:uppercase;
  color:var(--text-light);margin-bottom:2px;
}
.path h3{font-family:var(--sans);font-size:17px;font-weight:700;color:var(--ink)}
.path p{font-size:13.5px;color:var(--text-mid);margin-top:2px;line-height:1.45}
.path .arrow{color:var(--text-light);transition:transform .2s, color .2s}
.path:hover .arrow{transform:translateX(4px);color:var(--ink)}

/* ------- CARD GRIDS ------- */
.card{
  background:#fff;border:1px solid var(--border);
  border-radius:var(--radius);padding:28px;
  transition:transform .25s, box-shadow .25s, border-color .25s;
  position:relative;
}
.card:hover{transform:translateY(-3px);box-shadow:0 22px 44px -28px rgba(26,26,46,0.22);border-color:#d5d3cd}
.card h3{font-family:var(--sans);font-size:17px;font-weight:700;color:var(--ink);margin-bottom:8px}
.card p{font-size:14.5px;color:var(--text-mid);line-height:1.6}

/* ------- DARK CARDS ------- */
.dcard{
  background:rgba(255,255,255,0.055);border:1px solid rgba(255,255,255,0.09);
  border-radius:var(--radius);padding:32px 28px;
  transition:background .25s, border-color .25s, transform .25s;
}
.dcard:hover{background:rgba(255,255,255,0.1);border-color:rgba(255,255,255,0.18);transform:translateY(-2px)}
.dcard .icon{
  width:42px;height:42px;border-radius:10px;
  display:grid;place-items:center;margin-bottom:18px;
}
.dcard h3{color:#fff;font-family:var(--serif);font-size:26px;margin-bottom:10px;line-height:1.14}
.dcard h3 em{color:#93c5fd}
.dcard p{font-size:15px;color:rgba(255,255,255,0.65);line-height:1.65}

/* ------- REVEAL ------- */
.r{opacity:0;transform:translateY(22px);transition:opacity .75s cubic-bezier(.16,1,.3,1), transform .75s cubic-bezier(.16,1,.3,1)}
.r.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}
.d4{transition-delay:.32s}.d5{transition-delay:.4s}.d6{transition-delay:.48s}

@media (prefers-reduced-motion: reduce){
  .r{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* ------- FOOTER ------- */
footer{padding:56px 0 44px;border-top:1px solid var(--border);background:var(--paper)}
.foot{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;
  padding-bottom:36px;border-bottom:1px solid var(--border);
}
@media (max-width:820px){.foot{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:520px){.foot{grid-template-columns:1fr;gap:24px}}
.foot-col h4{
  font-family:var(--sans);font-size:12px;font-weight:600;
  letter-spacing:0.14em;text-transform:uppercase;
  color:var(--text-light);margin-bottom:16px;
}
.foot-col a{display:block;font-size:14.5px;color:var(--text-mid);padding:6px 0}
.foot-col a:hover{color:var(--ink)}
.foot-blurb{font-size:14.5px;color:var(--text-mid);max-width:32ch;margin-top:14px;line-height:1.6}
.foot-partnership{
  font-size:12px;color:var(--text-light);margin-top:10px;
  letter-spacing:0.06em;
}
.foot-partnership a{color:var(--text-mid);font-weight:600;display:inline}
.foot-partnership a:hover{color:var(--ink)}
.foot-bottom{
  padding-top:22px;display:flex;gap:16px;flex-wrap:wrap;
  justify-content:space-between;font-size:13px;color:var(--text-light);
}

/* ------- PARTNERSHIP RIBBON (above-fold trust) ------- */
.partner-ribbon{
  display:inline-flex;align-items:center;gap:14px;
  padding:8px 16px 8px 8px;border-radius:999px;
  background:#fff;border:1px solid var(--border);
  font-size:13px;color:var(--text-mid);
  box-shadow:0 6px 18px -10px rgba(26,26,46,0.15);
}
.partner-ribbon .pr-marks{display:inline-flex;align-items:center;gap:-6px}
.partner-ribbon .pr-mark{
  width:30px;height:30px;border-radius:50%;
  background:var(--ink);color:#fff;
  display:grid;place-items:center;
  font-family:var(--serif);font-size:14px;font-style:italic;
  border:2px solid #fff;
}
.partner-ribbon .pr-mark + .pr-mark{margin-left:-10px}
.partner-ribbon .pr-mark.howll{background:var(--accent)}
.partner-ribbon .pr-mark.pano{background:var(--indigo)}
.partner-ribbon strong{color:var(--ink);font-weight:600}

/* ------- MISC ------- */
.divider{height:1px;background:var(--border);max-width:var(--max);margin:0 auto}

/* small-screen tightening */
@media (max-width:600px){
  body{font-size:16px}
  .hero h1{margin:18px 0 18px}
  .hero-actions{gap:10px}
  .btn{padding:13px 20px;font-size:14.5px}
  .btn.lg{padding:15px 24px;font-size:15px}
}

/* ------- HERO with side image (homepage) ------- */
.hero-with-image{
  display:grid;grid-template-columns:1.35fr 0.85fr;gap:clamp(36px,5vw,80px);
  align-items:center;
}
@media (max-width:1000px){.hero-with-image{grid-template-columns:1fr;gap:40px}}
.hero-image{
  position:relative;border-radius:calc(var(--radius) + 6px);overflow:hidden;
  box-shadow:0 40px 80px -40px rgba(26,26,46,0.32),0 12px 30px -16px rgba(26,26,46,0.18);
  aspect-ratio:4/5;
  background:var(--cream);
}
.hero-image img{width:100%;height:100%;object-fit:cover;display:block}
@media (max-width:1000px){
  .hero-image{aspect-ratio:5/4;max-width:560px;margin:0 auto}
}

/* ------- PARTNER LOGOS (under Basket Bounce) ------- */
.partner-logos{
  margin-top:32px;padding:22px 26px;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  box-shadow:0 12px 28px -22px rgba(26,26,46,0.18);
  flex-wrap:wrap;
}
.partner-logos .pl-label{
  font-size:11px;font-weight:600;letter-spacing:0.16em;text-transform:uppercase;
  color:var(--text-light);flex-shrink:0;
}
.partner-logos .pl-marks{
  display:flex;align-items:center;gap:24px;flex-wrap:wrap;justify-content:flex-end;
}
.partner-logos .pl-mark{
  display:inline-flex;align-items:center;flex-shrink:0;
  transition:opacity .2s;
}
.partner-logos .pl-mark:hover{opacity:0.75}
.partner-logos .pl-mark img{
  display:block;width:auto;height:auto;
  max-height:32px;max-width:140px;
  object-fit:contain;
}
.partner-logos .pl-mark.pano img{max-height:44px;max-width:44px;border-radius:6px}
@media (max-width:560px){
  .partner-logos{flex-direction:column;align-items:flex-start;gap:14px}
  .partner-logos .pl-marks{justify-content:flex-start;gap:18px}
}

/* ------- LEGAL PAGES (privacy, terms) ------- */
.legal{padding:calc(68px + clamp(48px,7vw,96px)) 0 var(--sec-y)}
.legal .wrap-narrow{max-width:780px}
.legal h1{
  font-family:var(--serif);font-size:clamp(40px,5vw,68px);line-height:1.05;
  margin-bottom:14px;
}
.legal .lede{
  font-size:18px;color:var(--text-mid);line-height:1.6;margin-bottom:8px;
}
.legal .meta{
  font-size:13.5px;color:var(--text-light);margin-bottom:48px;
  padding-bottom:24px;border-bottom:1px solid var(--border);
  letter-spacing:0.04em;
}
.legal h2{
  font-family:var(--serif);font-size:clamp(24px,2.6vw,32px);
  margin:44px 0 14px;line-height:1.15;
}
.legal h3{
  font-family:var(--sans);font-size:17px;font-weight:700;color:var(--ink);
  margin:24px 0 10px;
}
.legal p,.legal li{
  font-size:16px;line-height:1.7;color:var(--text);margin-bottom:14px;
}
.legal ul,.legal ol{padding-left:22px;margin-bottom:18px}
.legal li{margin-bottom:8px}
.legal a{
  color:var(--accent);text-decoration:underline;text-underline-offset:3px;
}
.legal a:hover{color:var(--accent-deep)}
.legal strong{color:var(--ink);font-weight:600}
.legal .toc{
  background:var(--cream);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px 28px;margin-bottom:36px;
}
.legal .toc h4{
  font-family:var(--sans);font-size:11.5px;font-weight:700;
  letter-spacing:0.16em;text-transform:uppercase;
  color:var(--text-light);margin-bottom:12px;
}
.legal .toc ol{margin:0;padding-left:20px;column-count:2;column-gap:30px}
@media (max-width:560px){.legal .toc ol{column-count:1}}
.legal .toc li{
  font-size:14px;line-height:1.5;margin-bottom:6px;break-inside:avoid;
}
.legal .toc a{color:var(--text-mid);text-decoration:none}
.legal .toc a:hover{color:var(--ink)}