/* Beam Analysis Workbench website: plain black and white, with colour only where the data has it. */
:root {
  --bg: #ffffff; --bg2: #f6f6f6; --panel: #ffffff; --panel-2: #fafafa;
  --line: #e4e4e4; --line-2: #cfcfcf;
  --ink: #0a0a0a; --ink-2: #3f3f3f; --ink-3: #737373;
  --f-ui: "Inter", "Helvetica Neue", Arial, sans-serif;
  --f-head: "Archivo", "Inter", Arial, sans-serif;
  color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; font: 16px/1.65 var(--f-ui); color: var(--ink); background: var(--bg); overflow-x: hidden; }
a { color: var(--ink); }
img { max-width: 100%; height: auto; display: block; }
.wrap { width: min(1180px, 100% - 32px); margin-inline: auto; }
.grad { color: var(--ink-3); }

/* top bar */
.nav { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, .92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 22px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 700 16px var(--f-head); letter-spacing: .01em; }
.brand svg { flex: none; }
.nav .links { display: flex; gap: 26px; margin-left: auto; font-size: 14.5px; align-items: center; }
.nav .links a:not(.btn) { color: var(--ink-2); text-decoration: none; }
.nav .links a:not(.btn):hover { color: var(--ink); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 22px; border-radius: 6px; border: 1px solid var(--ink); background: var(--ink); color: #fff; font: 600 15px var(--f-ui); text-decoration: none; white-space: nowrap; cursor: pointer; transition: background .15s, color .15s; }
.btn:hover { background: #262626; }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn.ghost:hover { border-color: var(--ink); background: transparent; }
.btn.sm { padding: 8px 16px; font-size: 14px; }

/* hero */
.hero { padding: 72px 0 48px; border-bottom: 1px solid var(--line); }
.hero .wrap { display: grid; grid-template-columns: 1fr 1.05fr; gap: 48px; align-items: center; }
.pill { display: inline-flex; gap: 8px; align-items: center; padding: 5px 12px 5px 5px; border-radius: 999px; border: 1px solid var(--line-2); font-size: 13px; color: var(--ink-2); }
.pill b { background: var(--ink); color: #fff; padding: 2px 9px; border-radius: 999px; font-size: 12px; }
.hero h1 { font: 800 clamp(40px, 5.4vw, 66px)/1.03 var(--f-head); letter-spacing: -.02em; margin: 18px 0 18px; font-stretch: 112%; }
.hero .lede { font-size: clamp(17px, 1.6vw, 19px); color: var(--ink-2); max-width: 56ch; margin: 0 0 30px; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 12px; }
.ticks { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 24px; font-size: 14px; color: var(--ink-3); list-style: none; padding: 0; }
.ticks li::before { content: "✓"; color: var(--ink); font-weight: 700; margin-right: 7px; }

/* the 3-D model in the hero */
.stage { position: relative; border-radius: 10px; border: 1px solid var(--line); background-color: var(--bg2);
  background-image: linear-gradient(#ececec 1px, transparent 1px), linear-gradient(90deg, #ececec 1px, transparent 1px); background-size: 28px 28px; padding: 92px 24px 92px; }
.stage img { width: 100%; }
.stage .lgd { position: absolute; left: 24px; bottom: 34px; display: flex; align-items: center; gap: 10px; font-size: 12.5px; color: var(--ink-2); }
.stage .lgd i { width: 150px; height: 8px; border-radius: 2px; background: linear-gradient(90deg, #0d0887, #6a00a8, #b12a90, #e16462, #fca636, #f0f921); }
.chipf { position: absolute; padding: 9px 13px; border-radius: 8px; background: #fff; border: 1px solid var(--line-2); font-size: 12.5px; color: var(--ink-3); box-shadow: 0 8px 20px -14px rgba(0, 0, 0, .35); }
.chipf b { display: block; font: 700 17px var(--f-head); color: var(--ink); }
.chipf.a { left: 18px; top: 18px; } .chipf.b { right: 18px; top: 18px; } .chipf.c { right: 18px; bottom: 18px; }

/* capabilities strip */
.topics { padding: 22px 0; border-bottom: 1px solid var(--line); background: var(--bg2); }
.topics .wrap { display: flex; flex-wrap: wrap; gap: 8px 10px; justify-content: center; }
.topic { padding: 6px 13px; border-radius: 999px; border: 1px solid var(--line-2); background: #fff; font-size: 13.5px; color: var(--ink-2); }

/* sections */
section.band { padding: 84px 0; }
section.band + section.band { border-top: 1px solid var(--line); }
.kicker { font: 700 12px var(--f-ui); letter-spacing: .16em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 12px; }
h2 { font: 800 clamp(30px, 3.4vw, 42px)/1.1 var(--f-head); letter-spacing: -.015em; margin: 0 0 14px; font-stretch: 108%; }
.sub { color: var(--ink-2); font-size: 17.5px; max-width: 62ch; margin: 0 0 40px; }
.center { text-align: center; } .center .sub { margin-inline: auto; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.card { position: relative; padding: 24px; border-radius: 10px; background: var(--panel); border: 1px solid var(--line); transition: border-color .2s; }
.card:hover { border-color: var(--ink); }
.card .ic { width: 42px; height: 42px; border-radius: 8px; display: grid; place-items: center; margin-bottom: 14px; border: 1px solid var(--line-2); color: var(--ink); }
.card .ic svg { width: 22px; height: 22px; }
.card h3 { margin: 0 0 6px; font: 700 17.5px var(--f-head); }
.card p { margin: 0; color: var(--ink-2); font-size: 14.5px; }
.card .tag { display: block; margin-bottom: 8px; font-size: 11.5px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); }

/* workflow */
.path { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: step; }
.path .card { padding-top: 60px; }
.path .card::before { counter-increment: step; content: "0" counter(step); position: absolute; top: 20px; left: 24px; font: 800 24px var(--f-head); color: var(--ink); }

/* gallery */
.gallery { border-radius: 10px; border: 1px solid var(--line); background: var(--bg2); padding: 14px; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; padding: 4px 4px 14px; }
.tab { padding: 8px 15px; border-radius: 6px; border: 1px solid var(--line-2); background: #fff; color: var(--ink-2); font: 600 14px var(--f-ui); cursor: pointer; }
.tab:hover { color: var(--ink); border-color: var(--ink); }
.tab[aria-selected="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
.shot { display: none; margin: 0; } .shot.on { display: block; }
.shot img { border-radius: 6px; border: 1px solid var(--line); width: 100%; }
.shot p { color: var(--ink-2); font-size: 14.5px; margin: 12px 6px 4px; }

/* split rows */
.split { display: grid; grid-template-columns: 1fr 1.15fr; gap: 48px; align-items: center; }
.split.flip > :first-child { order: 2; }
.list { list-style: none; padding: 0; margin: 0; }
.list li { position: relative; padding: 10px 0 10px 28px; border-bottom: 1px solid var(--line); color: var(--ink-2); }
.list li::before { content: "✓"; position: absolute; left: 2px; top: 10px; font-weight: 700; color: var(--ink); }
.frame { border-radius: 8px; border: 1px solid var(--line); overflow: hidden; box-shadow: 0 20px 50px -30px rgba(0, 0, 0, .45); }

/* numbers */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line); border-radius: 10px; }
.stat { padding: 26px 18px; text-align: center; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat b { display: block; font: 800 40px/1.1 var(--f-head); color: var(--ink); }
.stat span { color: var(--ink-3); font-size: 14px; }

/* call to action */
.cta-band { border-radius: 12px; padding: 56px 32px; text-align: center; background: var(--ink); color: #fff; }
.cta-band .sub { color: #c9c9c9; }
.cta-band .cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 24px; }
.cta-band .btn { background: #fff; color: var(--ink); border-color: #fff; }
.cta-band .btn:hover { background: #e9e9e9; }
.disc { max-width: 760px; margin: 28px auto 0; font-size: 13.5px; color: var(--ink-3); }

/* text pages */
.doc { padding: 56px 0 72px; }
.doc article { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: clamp(24px, 5vw, 52px); max-width: 860px; }
.doc h1 { font: 800 clamp(30px, 4vw, 42px)/1.1 var(--f-head); margin: 0 0 8px; }
.doc .meta { color: var(--ink-3); font-size: 14px; margin: 0 0 28px; }
.doc h2 { font-size: 21px; margin: 32px 0 8px; font-stretch: 100%; }
.doc p, .doc li { color: var(--ink-2); }
.doc pre { white-space: pre-wrap; font: 13px/1.5 ui-monospace, Consolas, monospace; background: var(--bg2); border: 1px solid var(--line); border-radius: 6px; padding: 14px; overflow-x: auto; }

/* footer */
footer.site { border-top: 1px solid var(--line); padding: 30px 0 40px; font-size: 14px; color: var(--ink-3); margin-top: 40px; }
footer.site .wrap { display: flex; flex-wrap: wrap; gap: 12px 26px; align-items: center; }
footer.site nav { display: flex; gap: 20px; margin-left: auto; flex-wrap: wrap; }
footer.site a { color: var(--ink-2); text-decoration: none; }
footer.site a:hover { color: var(--ink); }

/* reveal on scroll */
.js .rv { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.js .rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .rv { opacity: 1; transform: none; transition: none; } }

@media (max-width: 900px) {
  .hero .wrap, .split { grid-template-columns: 1fr; gap: 32px; }
  .split.flip > :first-child { order: 0; }
  .path { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; } .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .nav .links a:not(.btn) { display: none; }
  footer.site nav { margin-left: 0; }
  section.band { padding: 60px 0; }
}

@media (max-width: 600px) { .chipf.c { display: none; } .stage { padding: 84px 14px 70px; } .stage .lgd i { width: 90px; } }