:root { --bg: #11263f; --blue: #8ab4f8; --text: #fff; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: #e8eef8; font: 400 20px/1.6 Montserrat, sans-serif; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 2px; }
img { max-width: 100%; }

header { position: absolute; top: 0; left: 0; right: 0; display: flex; justify-content: space-between;
  align-items: center; padding: 16px 24px 28px; font-size: 18px; z-index: 1;
  background: linear-gradient(rgba(4,8,16,.6), transparent); }
nav { display: flex; gap: 28px; }
nav a { font-size: 17px; padding: 4px 0; border-bottom: 2px solid transparent; opacity: .85; transition: opacity .15s, border-color .15s; }
nav a:hover { opacity: 1; border-color: rgba(255,255,255,.4); }
nav a.on { font-weight: 700; opacity: 1; border-color: var(--blue); }

.hero { background: linear-gradient(rgba(4,8,16,.3), rgba(4,8,16,.3)), url(stars.jpg) center / cover #05060a; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center; height: 360px; padding: 56px 16px 0;
  border-bottom: 1px dashed #4a6a8f; }
.hero.tall { height: 450px; }
.hero.short { height: 245px; }
.hero h1 { font: 700 clamp(38px, 6vw, 62px) "Exo 2", sans-serif; margin: 0; color: #fff; text-shadow: 0 2px 18px rgba(0,0,0,.55); }
.hero.tall h1 { font: 700 clamp(40px, 7vw, 68px) Orbitron, sans-serif; margin: 28px 0 40px; }
.hero p { font-size: clamp(20px, 3vw, 34px); margin: 0; color: #fff; text-shadow: 0 2px 14px rgba(0,0,0,.55); }

section { border-bottom: 1px solid rgba(255,255,255,.09); padding: 56px 0; }
section:last-of-type { border-bottom: 0; }
.wrap { width: min(1228px, 100% - 48px); margin: 0 auto; }
h2 { color: var(--blue); font: 500 clamp(26px, 4vw, 36px) Montserrat, sans-serif; margin: 0 0 22px; letter-spacing: -.01em; }
.wrap > p { max-width: 72ch; }
.wrap > p, .cols p { margin: 0 0 12px; }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.cols p { font-size: clamp(18px, 2.4vw, 22px); margin-bottom: 14px; }

/* home */
.team { display: grid; grid-template-columns: 1fr minmax(0, 490px); gap: 0 100px; align-items: start; padding: 26px 0 90px; }
.team h2 { font-weight: 700; font-size: clamp(28px, 4vw, 34px); }
.team p { font-size: clamp(19px, 2.6vw, 25px); margin: 0 0 24px; }
.team ul { margin: -14px 0 0; padding-left: 20px; list-style: square; font-size: clamp(19px, 2.6vw, 25px); line-height: 1.75; }
.team img { width: 100%; display: block; border-radius: 6px; box-shadow: 0 8px 24px rgba(0,0,0,.35); }

/* concepts */
.concepts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; text-align: center; align-items: start; }
.concepts figure { margin: 0; }
.concepts .img { aspect-ratio: 1; overflow: hidden; border-radius: 6px; box-shadow: 0 8px 24px rgba(0,0,0,.35); }
.concepts img { width: 100%; height: 100%; object-fit: cover; display: block; }
/* B's source PNG has a blank band across the top; scale it out of view */
.concepts .b img { transform: scale(1.25); transform-origin: bottom; object-position: bottom; }
.concepts h3 { font: 700 25px "Exo 2", sans-serif; margin: 26px 0 14px; color: #fff; }
.concepts p { font-size: 18px; margin: 0 0 16px; line-height: 1.55; }
.concepts p:last-child { font-size: 15px; opacity: .7; }

table { border-collapse: collapse; font-size: 19px; margin: 8px 0 0; }
td, th { padding: 11px 22px; text-align: left; font-weight: 400; border-bottom: 1px solid rgba(255,255,255,.1); }
th { color: var(--blue); font-weight: 700; border-bottom-color: rgba(138,180,248,.45); }
td + td, th + th { text-align: center; }
tr:last-child td { font-weight: 700; color: #fff; border-bottom: 0; border-top: 1px solid rgba(255,255,255,.25); }

/* pdr */
.center h2 { text-align: center; font-size: clamp(30px, 5vw, 52px); margin-bottom: 40px; }
.pdr { display: grid; grid-template-columns: repeat(2, minmax(0, 493px)); gap: 30px; justify-content: center; }
.pdr img { width: 100%; display: block; border-radius: 4px; box-shadow: 0 10px 30px rgba(0,0,0,.4); }

@media (max-width: 860px) {
  body { font-size: 18px; }
  header { flex-direction: column; gap: 6px; padding: 12px 12px 24px; }
  nav { gap: 4px 16px; flex-wrap: wrap; justify-content: center; }
  nav a { font-size: 15px; }
  .hero { padding-top: 96px; }
  .hero.tall { height: 420px; }
  .hero.tall h1 { margin: 20px 0 28px; }
  .cols, .concepts, .pdr, .team { grid-template-columns: 1fr; }
  .team { gap: 28px; padding-bottom: 50px; }
  .concepts { gap: 44px; }
  .wrap { width: min(1228px, 100% - 32px); }
  table { font-size: 17px; }
  td, th { padding: 9px 12px; }
  section { padding: 40px 0; }
}

.status { text-align: center; margin: -22px 0 0; font-size: 18px; color: #f0b27a; letter-spacing: .04em; }

/* prototype */
.steps { list-style: none; margin: 0; padding: 0; max-width: 72ch; }
.steps li { margin: 0 0 8px; }
.note { font-size: 16px; opacity: .8; margin: -8px 0 18px; }
table.sched { width: 100%; margin: 0; }
.sched td, .sched th { text-align: left; }
.sched th:first-child, .sched td:first-child { width: 22%; }
.sched th:last-child, .sched td:last-child { width: 16%; }
.sched tr:last-child td { font-weight: 400; color: inherit; border-top: 0; border-bottom: 0; }
footer { text-align: center; padding: 28px 16px 36px; font-size: 15px; opacity: .75; border-top: 1px solid rgba(255,255,255,.09); }
@media (max-width: 860px) { .sched td, .sched th { padding: 9px 8px; font-size: 15px; } .sched th:first-child, .sched td:first-child { width: 30%; } }