/* Timeless Tuition: shared styles for every page */
:root{
  --white:#FFFFFF;
  --ink:#1C1C1E;        /* charcoal text */
  --muted:#5F6670;
  --wash:#F5F6F8;
  --rule:#E2E5EA;
  --cell:#EEF1F5;
  --sapphire:#1E3A8A;
  --navy:#0F2A4A;
  --emerald:#065F46;
  --garnet:#9F1239;
  --on-dark:#FFFFFF;
  --on-dark-muted:rgba(255,255,255,.70);
  --font:"Inter", system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --gutter:20px;
  color-scheme:light;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;background:var(--white)}
body{margin:0;background:var(--white);color:var(--ink);font:400 17px/1.55 var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--sapphire);text-underline-offset:3px;transition:color .25s var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--sapphire);outline-offset:3px;border-radius:4px}
h1,h2,h3,p{margin:0}
.wrap{max-width:1120px;margin:0 auto;padding:0 var(--gutter)}
.narrow{max-width:760px}
.center{text-align:center}
.center .lede{margin-left:auto;margin-right:auto}

/* Type */
.eyebrow{font-size:15px;font-weight:600;color:var(--sapphire);letter-spacing:.01em;margin-bottom:12px}
.dark .eyebrow{color:#9DB4E0}
h1{font-size:clamp(44px,11vw,104px);line-height:1.02;font-weight:700;letter-spacing:-.04em}
h2{font-size:clamp(34px,7.4vw,68px);line-height:1.05;font-weight:700;letter-spacing:-.035em}
h3{font-size:21px;line-height:1.25;font-weight:600;letter-spacing:-.015em}
.lede{font-size:clamp(18px,2.4vw,23px);line-height:1.45;color:var(--muted);max-width:32em;margin-top:18px}
.dark .lede{color:var(--on-dark-muted)}

/* Sections alternate light and dark */
section{padding:96px 0;overflow-x:clip}
.dark{background:var(--navy);color:var(--on-dark)}
.wash{background:var(--wash)}

/* Buttons and links */
.btn{display:inline-block;background:var(--navy);color:#fff;text-decoration:none;font:600 17px/1 var(--font);padding:16px 26px;border-radius:999px;transition:transform .3s var(--ease),background .3s var(--ease),box-shadow .3s var(--ease)}
.btn:hover{background:#163A63;transform:translateY(-1px);box-shadow:0 10px 24px -14px rgba(15,42,74,.6)}
.btn:active{transform:scale(.98)}
.dark .btn{background:var(--white);color:var(--navy)}
.dark .btn:hover{background:var(--cell)}
.more{font-weight:500;text-decoration:none;font-size:17px}
.more::after{content:" \203A";display:inline-block;transition:transform .3s var(--ease)}
.more:hover{text-decoration:underline}
.more:hover::after{transform:translateX(3px)}
.dark .more{color:#C9D6F0}
.cta{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:16px 28px;margin-top:32px}
.fine{font-size:14px;color:var(--muted);margin-top:18px}
.dark .fine{color:var(--on-dark-muted)}

/* ---------- Nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.82);-webkit-backdrop-filter:saturate(180%) blur(16px);backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid rgba(0,0,0,.06)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;height:52px}
.mark{display:flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--ink);text-decoration:none;letter-spacing:-.015em;white-space:nowrap}
.mark svg{width:20px;height:20px;flex:none;transition:transform .4s var(--ease)}
.mark:hover svg{transform:rotate(-8deg)}
.nav nav{display:flex;align-items:center;gap:14px}
.nav nav a{color:var(--muted);text-decoration:none;font-size:13px;white-space:nowrap}
.nav nav a:hover,.nav nav a[aria-current="page"]{color:var(--ink)}
.pill{display:inline-block;background:var(--navy);color:#fff!important;text-decoration:none;font:600 13px/1 var(--font);padding:8px 13px;border-radius:999px;transition:background .3s var(--ease),transform .3s var(--ease)}
.pill:hover{background:#163A63;transform:translateY(-1px)}

/* ---------- Footer ---------- */
.site-foot{background:var(--wash);border-top:1px solid var(--rule);padding:56px 0 48px;font-size:14px;color:var(--muted);text-align:center}
.site-foot .wrap{display:flex;flex-direction:column;align-items:center;gap:14px}
.site-foot .mark{font-size:17px}
.socials{display:flex;gap:10px;list-style:none;margin:6px 0 0;padding:0}
.socials a{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--white);border:1px solid var(--rule);color:var(--ink);transition:transform .3s var(--ease),background .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease)}
.socials a:hover{transform:translateY(-2px);background:var(--navy);border-color:var(--navy);color:#fff}
.socials svg{width:17px;height:17px}
.site-foot .mail{font-weight:500}
.site-foot .made{margin-top:10px;padding-top:18px;border-top:1px solid var(--rule);color:var(--ink);font-weight:500;width:100%;max-width:420px}

/* ---------- Motion ---------- */
/* Pages fade in on load and fade out before the next page opens */
@keyframes page-in{from{opacity:0}to{opacity:1}}
body{animation:page-in .6s var(--ease) both}
@keyframes page-out{from{opacity:1}to{opacity:0}}
body.leaving{animation:page-out .28s var(--ease) forwards}

/* Gentle reveals on scroll */
.js .reveal{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.js .reveal.in{opacity:1;transform:none}
.js .reveal.d1{transition-delay:.12s}.js .reveal.d2{transition-delay:.24s}.js .reveal.d3{transition-delay:.36s}

/* Circle portrait */
.portrait{border-radius:50%;object-fit:cover;aspect-ratio:1;background:var(--cell);box-shadow:0 24px 50px -28px rgba(15,42,74,.55)}
.js .reveal.portrait{transform:scale(.94);transition:opacity 1.1s var(--ease),transform 1.1s var(--ease)}
.js .reveal.portrait.in{transform:none}

@media (min-width:600px){
  :root{--gutter:28px}
  .nav nav{gap:22px}
  .pill{padding:8px 14px}
}
@media (min-width:900px){
  section{padding:140px 0}
}