@font-face { font-family: 'Lumenar Sans'; src: url('fonts/LumenarSans-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Lumenar Sans'; src: url('fonts/LumenarSans-600.woff2') format('woff2'); font-weight: 500 600; font-display: swap; }
@font-face { font-family: 'Lumenar Sans'; src: url('fonts/LumenarSans-800.woff2') format('woff2'); font-weight: 700 900; font-display: swap; }
@font-face { font-family: 'Kalam'; src: url('fonts/Kalam-400.woff2') format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Kalam'; src: url('fonts/Kalam-700.woff2') format('woff2'); font-weight: 700; font-display: swap; }

:root {
  --paper: #ffffff;
  --ink: #14213d;        /* text and the "printed" parts of sketches */
  --graphite: #59637a;   /* secondary text, pencil marks */
  --rule: #e3e7ef;
  --grid: #eef2fa;       /* notebook grid in the hero */
  --pen: #2d4be0;        /* ballpoint blue: every handwritten note */
  --marker: #ffe45c;     /* highlighter */
  --sans: 'Lumenar Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --hand: 'Kalam', 'Comic Neue', cursive;
  --wrap: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 1.125rem/1.6 var(--sans); font-kerning: normal;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--pen); }
:focus-visible { outline: 3px solid var(--pen); outline-offset: 3px; border-radius: 2px; }
p { margin: 0 0 1em; }
h1, h2, h3 { margin: 0; font-weight: 800; letter-spacing: -0.02em; text-wrap: balance; }
h1 { font-size: clamp(2.5rem, 5.4vw, 4.25rem); line-height: 1.02; letter-spacing: -0.035em; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.6rem); line-height: 1.1; margin-bottom: 0.6em; }
h3 { font-size: 1.25rem; line-height: 1.3; margin-bottom: 0.4em; letter-spacing: -0.01em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 32px; }
.narrow { max-width: 820px; margin-left: max(32px, calc((100vw - var(--wrap)) / 2 + 32px)); padding: 0; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--ink); color: #fff; padding: 8px 14px; z-index: 10; }

/* ---------- header ---------- */
.top { position: sticky; top: 0; z-index: 5; background: rgba(255, 255, 255, 0.92); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--rule); }
.top-row { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.wordmark { font-weight: 800; font-size: 1.5rem; letter-spacing: -0.03em; text-decoration: none; }
.wordmark.small { font-size: 1.1rem; margin-right: 10px; }
nav { display: flex; align-items: center; gap: 28px; font-size: 0.98rem; }
nav a { text-decoration: none; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; padding: 14px 24px; border-radius: 10px; font-weight: 700; font-size: 1rem; line-height: 1;
  text-decoration: none; background: var(--ink); color: #fff; border: 2px solid var(--ink);
  transition: transform .12s ease, background .12s ease;
}
.btn:hover { color: #fff; background: var(--pen); border-color: var(--pen); }
.btn:active { transform: translateY(1px); }
.btn-small { padding: 10px 16px; font-size: 0.92rem; }
.btn-quiet { background: transparent; color: var(--ink); }
.btn-quiet:hover { background: transparent; color: var(--pen); }
.btn-light { background: var(--marker); color: var(--ink); border-color: var(--marker); }
.btn-light:hover { background: #fff; border-color: #fff; color: var(--ink); }
.btn-quiet-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.5); }
.btn-quiet-light:hover { background: transparent; border-color: #fff; color: #fff; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 32px 0 20px; }

/* ---------- hero: a page from an engineer's notebook ---------- */
.hero {
  padding: 72px 0 88px;
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 28px 28px; background-position: -1px -1px;
  border-bottom: 1px solid var(--rule);
}
.hero-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center; }
.lede { font-size: 1.28rem; line-height: 1.55; color: var(--ink); max-width: 34em; margin-top: 28px; }
.note { font-family: var(--hand); color: var(--pen); font-size: 1.2rem; margin: 0; }
.hero-figure { margin: 0; background: var(--paper); border-radius: 4px; padding: 8px; box-shadow: 0 1px 0 var(--rule), 0 18px 40px -24px rgba(20, 33, 61, 0.35); transform: rotate(-0.6deg); }

/* the one moment of motion: the hero sketch draws itself once */
.hero-sketch path { stroke-dasharray: 1; stroke-dashoffset: 1; animation: draw .9s cubic-bezier(.6, .1, .3, 1) forwards; }
.hero-sketch text { opacity: 0; animation: ink .5s ease forwards; }
.hero-sketch .d1 { animation-delay: .15s; } .hero-sketch .d2 { animation-delay: .55s; }
.hero-sketch .d3 { animation-delay: .9s; }  .hero-sketch .d4 { animation-delay: 1.3s; }
.hero-sketch .d5 { animation-delay: 1.7s; } .hero-sketch .d6 { animation-delay: 2.1s; }
.hero-sketch .d7 { animation-delay: 2.6s; animation-duration: 1.1s; }
.hero-sketch text { animation-delay: 1.2s; }
.hero-sketch text:last-of-type { animation-delay: 2.5s; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes ink { to { opacity: 1; } }

/* ---------- sections ---------- */
.band { padding: 112px 0 0; }
#team { padding-bottom: 112px; }
.band p { max-width: 38em; }
.intro { font-size: 1.2rem; color: var(--graphite); margin-bottom: 48px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split-wide { grid-template-columns: 0.9fr 1.1fr; }
figure { margin: 0; }
figcaption { font-family: var(--hand); color: var(--graphite); font-size: 1.05rem; margin-top: 8px; }
.source { font-size: 0.9rem; color: var(--graphite); }

.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin: 36px 0 24px; }
.stat p { font-size: 1rem; color: var(--graphite); margin: 0; }
.stat .num { font-size: clamp(3rem, 5vw, 4.2rem); font-weight: 800; letter-spacing: -0.04em; line-height: 1; color: var(--ink); margin-bottom: 12px; }
/* highlighter: a slightly uneven swipe behind the number */
.hl { background: linear-gradient(100deg, transparent 0 2%, var(--marker) 3% 96%, transparent 98%) no-repeat 0 62% / 100% 58%; padding: 0 4px; margin: 0 -4px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 56px 64px; }
.mech .mini { height: 96px; width: auto; margin: 0 0 18px -6px; }
.mech p { color: var(--graphite); font-size: 1.05rem; }

.handoff-sketch { width: 100%; margin: 24px 0 8px; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px 48px; counter-reset: s; }
.steps li { counter-increment: s; color: var(--graphite); font-size: 1.02rem; padding-left: 36px; position: relative; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: -2px; font-family: var(--hand); font-weight: 700; font-size: 1.4rem; color: var(--pen); }
.steps strong { color: var(--ink); }

.status h3 { font-size: 1.4rem; margin-bottom: 18px; }
.ticks { list-style: none; margin: 0; padding: 0; }
.ticks li { display: flex; gap: 14px; align-items: flex-start; padding: 14px 0; border-top: 1px solid var(--rule); font-size: 1.05rem; }
.ticks .mark { flex: 0 0 26px; width: 26px; height: 26px; margin-top: 1px; }

.people { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 16px; }
.person h3 { font-size: 1.5rem; margin-bottom: 4px; }
.person p { color: var(--graphite); margin-bottom: 12px; }
.person a { font-size: 0.98rem; word-break: break-all; }

.cta { background: var(--ink); color: #fff; padding: 104px 0; }
.cta h2 { color: #fff; }
.cta p { color: #c9d0e0; font-size: 1.2rem; max-width: 34em; }
.cta .uline { width: 260px; height: 14px; margin-top: 8px; }

.foot { padding: 32px 0; font-size: 0.95rem; color: var(--graphite); }
.foot-row { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.foot p { margin: 0; }

/* ---------- small screens ---------- */
@media (max-width: 900px) {
  .hero { padding: 48px 0 64px; }
  .hero-grid, .split, .split-wide, .grid-2 { grid-template-columns: 1fr; gap: 40px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .people { grid-template-columns: 1fr; gap: 28px; }
  .band { padding-top: 80px; }
  .hero-figure { transform: none; }
}
@media (max-width: 600px) {
  .wrap { padding: 0 16px; }
  .narrow { margin-left: 16px; margin-right: 16px; }
  nav a:not(.btn) { display: none; }
  .stats { grid-template-columns: 1fr; gap: 24px; }
  .steps { grid-template-columns: 1fr; }
  .handoff-sketch { display: none; }
  .foot-row { flex-direction: column; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-sketch path { animation: none; stroke-dashoffset: 0; }
  .hero-sketch text { animation: none; opacity: 1; }
}