:root{
  --bg:#ffffff;
  --ink:#0f172a;
  --muted:#64748b;
  --card:#f8fafc;
  --border:#e5e7eb;
  --accent:#f6c343;
  --accent-ink:#4a3800;
  --shadow:0 10px 30px rgba(15,23,42,.08);
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1100px;margin:0 auto;padding:0 16px}

/* Header */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{font-weight:800;display:flex;align-items:center;gap:.6rem}
.brand .dot{width:10px;height:10px;border-radius:999px;background:var(--accent)}
.links{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.links a{padding:.2rem .2rem;border-radius:6px}

/* Buttons (CTAs) */
.btn{display:inline-block;border:none;outline:none;border-radius:999px;padding:12px 18px;font-weight:700;box-shadow:var(--shadow);transition:transform .08s ease, box-shadow .2s ease}
.btn:focus{outline:2px solid rgba(246,195,67,.5);outline-offset:2px}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn.dark{background:var(--ink);color:#fff}
.btn.light{background:var(--accent);color:var(--accent-ink)}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--border)}

/* Hero */
.hero{padding:72px 0 36px}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center}
.hero h1{font-size:44px;line-height:1.05;margin:0 0 10px}
.hero .lead{color:var(--muted);font-size:18px;margin:0 0 18px}
.kicker{display:inline-block;background:#fff5d1;color:var(--accent-ink);padding:6px 10px;border-radius:999px;font-weight:700;margin-bottom:10px}
figure.thumb img{border-radius:12px;border:1px solid var(--border)}

/* Sections */
.section{padding:48px 0}
.section h2{font-size:28px;margin:0 0 6px}
.section .sub{color:var(--muted);margin:0 0 16px}
.grid{display:grid;gap:18px}
.grid.two{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.grid.three{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:16px;box-shadow:var(--shadow);transition:transform .12s ease, box-shadow .2s ease}
.card h3{margin:0 0 6px}
.card .impact{font-size:13px;color:#065f46;background:#ecfdf5;display:inline-block;padding:6px 10px;border-radius:10px;margin-top:8px}
.card.clickable{cursor:pointer}
.card.clickable:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(15,23,42,.12)}
.badge{display:inline-block;padding:4px 8px;background:#fff;border:1px solid var(--border);border-radius:999px;font-size:12px;color:var(--muted);margin-right:6px}
.curriculum{font-size:13px;color:var(--muted);margin-top:6px}

/* Accordion */
.accordion{border:1px solid var(--border);border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
.accordion-item+.accordion-item{border-top:1px solid var(--border)}
.accordion-header{background:#fff;padding:14px 16px;display:flex;align-items:center;justify-content:space-between;cursor:pointer}
.accordion-header h4{margin:0;font-size:16px}
.accordion-body{display:none;padding:0 16px 16px;background:var(--card)}
.accordion-item.open .accordion-body{display:block}
.accordion-item.open .accordion-header{background:#fffbe6}

/* Timeline (paired grid) */
.timeline{display:grid;grid-template-columns:44px 1fr;column-gap:16px;position:relative}
.timeline::before{content:"";position:absolute;left:22px;top:0;bottom:0;width:2px;background:var(--border)}
.timeline .rail{position:relative;padding:18px 0}
.timeline .dot{position:absolute;left:17px;top:22px;width:10px;height:10px;background:var(--accent);border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 2px var(--border)}
.timeline .entry{padding:14px 0;border-bottom:1px dashed var(--border)}
.timeline .entry:last-child{border-bottom:none}

/* Videos */
.video-mini{width:100%;height:160px;object-fit:cover;border-radius:12px;background:#000;border:1px solid var(--border);cursor:pointer}
.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.5);display:none;align-items:center;justify-content:center;padding:16px;z-index:100;opacity:0;transition:opacity .18s ease}
.modal-backdrop.show{display:flex;opacity:1}
.modal{background:#fff;width:min(900px,96%);border-radius:16px;box-shadow:var(--shadow);padding:16px 16px 20px;position:relative;transform:scale(.96);opacity:0;transition:transform .18s ease, opacity .18s ease}
.modal.show{transform:scale(1);opacity:1}
.modal .close{position:absolute;top:8px;right:10px;border:none;background:#fff;font-size:18px;cursor:pointer}
.modal video{width:100%;border-radius:12px;background:#000;margin-top:10px}

/* Reveal */
.reveal{opacity:0;transform:translateY(20px);transition:all .5s ease}
.reveal.visible{opacity:1;transform:none}

/* Footer + signature */
footer.site{border-top:1px solid var(--border);padding:26px 0;margin-top:40px;color:var(--muted);position:relative}

.sig-about{max-width:220px; opacity:.55; margin-left:auto; margin-top:12px}
.sig-contact{max-width:180px; opacity:.6; margin:10px auto 0 auto}

/* Email modal */
.email-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:16px;box-shadow:var(--shadow);}
.email-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.email-code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;background:#f1f5f9;border-radius:10px;padding:10px 12px}
.copy-btn{border:none;border-radius:10px;padding:10px 12px;font-weight:700;background:var(--accent);color:var(--accent-ink);box-shadow:var(--shadow);cursor:pointer}
.copy-btn:hover{transform:translateY(-1px)}
.copy-note{font-size:12px;color:var(--muted);margin-top:6px}

/* Mobile */
@media (max-width: 720px){
  .nav{padding:10px 0}
  .brand{font-size:18px}
  .links{gap:8px; overflow-x:auto; white-space:nowrap}
  .links a{padding:.2rem .4rem}
  .hero{padding:44px 0 22px}
  .hero .wrap{grid-template-columns:1fr; text-align:center}
  .hero h1{font-size:32px}
  .hero .lead{font-size:16px}
  .hero .wrap .btn{width:100%; text-align:center}
  .section{padding:32px 0}
  .section h2{font-size:22px}
  .grid.two, .grid.three{grid-template-columns:1fr}
  .card{padding:14px}
  .video-mini{height:160px}
  .timeline{grid-template-columns:28px 1fr; column-gap:12px}
  .timeline::before{left:14px}
  .timeline .dot{left:9px; top:18px}
  .timeline .entry{padding:10px 0}
  .modal-backdrop{padding:0}
  .modal{width:100%; height:100%; border-radius:0; max-height:100%; overflow:auto}
}