/* Lumen's web look (web/src/styles.css, October 7 and 11, 2026), at a marketing page's scale: a black canvas with a quiet night-sky glow, glass
   panels with faint white borders, 4 pt corners (8 for large panels), the system font only with regular titles and semibold labels, muted
   sentence-case labels, white as the primary action, and colour kept off the text (the logo keeps its own). */
:root {
  --background: #000;
  --aura: radial-gradient(70% 55% at 50% -15%, rgba(38, 64, 128, 0.38), transparent 70%);
  --panel: rgba(30, 30, 32, 0.55);
  --inset: rgba(255, 255, 255, 0.04);
  --raised: rgba(255, 255, 255, 0.1);
  --line: rgba(255, 255, 255, 0.1);
  --muted: rgba(255, 255, 255, 0.65);
  --faint: rgba(255, 255, 255, 0.45);
  --text: #fff;
  --radius: 4px; --radius-lg: 8px;
  --max: 1160px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--background); background-image: var(--aura); background-repeat: no-repeat; color: var(--text);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif; letter-spacing: -0.006em; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: inherit; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.eyebrow { display: block; font-size: 0.8125rem; font-weight: 400; color: var(--muted); }
h1, h2, h3 { margin: 0; letter-spacing: -0.02em; line-height: 1.12; }
h2 { font-size: clamp(1.75rem, 3.2vw, 2.5rem); font-weight: 400; }
h3 { font-weight: 600; }
.lede { font-size: 1.0625rem; color: var(--muted); max-width: 60ch; margin: 0; }
.btn { display: inline-flex; align-items: center; padding: 11px 20px; border-radius: var(--radius); font-weight: 600; font-size: 0.9375rem; text-decoration: none; border: 1px solid transparent; transition: background 0.15s; }
.btn.primary { background: var(--text); color: #000; }
.btn.primary:hover { background: #e6e6e6; }
.btn.ghost { background: var(--raised); color: var(--text); }
.btn.ghost:hover { background: rgba(255, 255, 255, 0.16); }
:focus-visible { outline: 2px solid rgba(255, 255, 255, 0.6); outline-offset: 2px; }

.eyebrow + h2 { margin-top: 12px; }
h2 + .lede, h2 + p { margin-top: 14px; }

/* Header: the app's top bar, glass over the page. */
.site-header { position: fixed; inset: 0 0 auto; z-index: 10; background: rgba(0, 0, 0, 0.5); border-bottom: 1px solid var(--line); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 24px; }
.site-header .logo img { height: 34px; width: auto; }
.nav { display: flex; align-items: center; gap: 24px; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: 0.875rem; }
.nav a:hover { color: var(--text); }
.nav .btn { padding: 7px 14px; font-size: 0.875rem; color: #000; }

/* Hero */
.hero { position: relative; min-height: 92vh; display: flex; align-items: center; overflow: hidden; }
.hero-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 70% 40%; filter: saturate(0.85); }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, #000 0%, rgba(0, 0, 0, 0.86) 40%, rgba(0, 0, 0, 0.25) 100%), linear-gradient(0deg, #000 0%, transparent 30%); }
.hero .wrap { position: relative; z-index: 1; padding-top: 120px; padding-bottom: 72px; width: 100%; }
.hero h1 { font-size: clamp(2.5rem, 5.6vw, 4.25rem); font-weight: 400; max-width: 15ch; margin: 14px 0 22px; }
.hero h1 span { color: var(--muted); }
.hero p { font-size: 1.125rem; color: var(--muted); max-width: 52ch; margin: 0 0 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.proof { display: flex; flex-wrap: wrap; gap: 8px; margin: 48px 0 0; padding: 0; list-style: none; }
.proof li { display: inline-flex; align-items: center; height: 28px; padding: 0 10px; border-radius: 2px; background: var(--raised); font-size: 0.8125rem; font-weight: 600; }

/* Sections */
section { padding: 96px 0; }
.section-head { display: grid; gap: 12px; margin-bottom: 44px; }

/* Services: glass panels with the panel title bar. */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); display: grid; align-content: start; transition: border-color 0.15s, background 0.15s; }
.card:hover { border-color: rgba(255, 255, 255, 0.2); background: rgba(40, 40, 44, 0.6); }
.card-title { display: flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 40px; padding: 8px 16px; border-bottom: 1px solid var(--line); }
.card .kind { font-size: 0.8125rem; color: var(--muted); }
.card .num { display: inline-flex; align-items: center; justify-content: center; min-width: 26px; height: 20px; padding: 0 6px; border-radius: 2px; background: rgba(255, 255, 255, 0.12); font-size: 0.75rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.card-body { padding: 16px 16px 20px; display: grid; gap: 8px; }
.card h3 { font-size: 1.0625rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.9375rem; }

/* Approach */
.approach .wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.approach-visual { position: relative; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line); }
.approach-visual img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.approach-visual .tag { position: absolute; left: 16px; bottom: 16px; background: rgba(28, 28, 30, 0.85); border: 1px solid var(--line); padding: 6px 10px; border-radius: var(--radius); font-size: 0.8125rem; font-weight: 600; backdrop-filter: blur(16px); }
.steps { list-style: none; margin: 28px 0 0; padding: 0; display: grid; gap: 8px; }
.steps li { display: grid; grid-template-columns: 32px 1fr; gap: 14px; align-items: start; background: var(--inset); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.steps .dot { width: 26px; height: 22px; border-radius: 2px; background: rgba(255, 255, 255, 0.12); display: grid; place-items: center; font-weight: 600; font-size: 0.8125rem; }
.steps h3 { font-size: 1rem; margin-bottom: 2px; }
.steps p { margin: 0; color: var(--muted); font-size: 0.9375rem; }

/* Founder */
.founder .wrap { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 64px; align-items: center; }
.founder-photo { border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 4 / 5; border: 1px solid var(--line); }
.founder-photo img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 20%; }
.founder blockquote { margin: 18px 0 24px; font-size: clamp(1.2rem, 2vw, 1.5rem); line-height: 1.5; font-weight: 400; }
.founder .who { font-weight: 600; margin: 0; }
.founder .who span { display: block; font-weight: 400; color: var(--muted); font-size: 0.9375rem; }

/* FAQ: the app's rows, separated by a hairline. */
.faq .wrap { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 56px; align-items: start; }
.faq .lede a { color: var(--text); text-underline-offset: 3px; }
.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq details:first-child { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 20px; font-weight: 600; font-size: 1.0625rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.25rem; font-weight: 400; color: var(--faint); transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 10px 0 0; color: var(--muted); max-width: 62ch; }

/* Contact */
.contact { padding: 0 0 96px; }
.contact-panel { position: relative; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--line); background: #000; }
.contact-panel img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.25; filter: saturate(0.6); }
.contact-inner { position: relative; display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; padding: 56px; align-items: center; }
.contact p { color: var(--muted); font-size: 1.0625rem; margin: 12px 0 0; }
.contact-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.contact-list a, .contact-list span { display: block; padding: 12px 16px; border-radius: var(--radius); background: var(--panel); border: 1px solid var(--line); text-decoration: none; font-weight: 600; backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
.contact-list a:hover { border-color: rgba(255, 255, 255, 0.25); }
.contact-list small { display: block; font-weight: 400; color: var(--muted); font-size: 0.8125rem; }

/* Footer */
footer { border-top: 1px solid var(--line); color: var(--muted); padding: 32px 0; font-size: 0.875rem; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px; }
footer img { height: 28px; width: auto; }
footer nav { display: flex; gap: 20px; }
footer a { text-decoration: none; font-weight: 600; }
footer a:hover { color: var(--text); }

@media (max-width: 1000px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .approach .wrap, .founder .wrap, .faq .wrap, .contact-inner { grid-template-columns: 1fr; gap: 36px; }
  .founder-photo { max-width: 360px; }
}
@media (max-width: 720px) {
  .nav a:not(.btn) { display: none; }
  .nav a[href="/lumen/"] { display: inline; }   /* the one tab kept on phones beside Contact */
  .site-header .logo img { height: 30px; }
  section { padding: 64px 0; }
  .wrap { padding: 0 16px; }
  .hero { min-height: 88vh; }
  .hero::after { background: linear-gradient(180deg, rgba(0, 0, 0, 0.6) 0%, #000 75%); }
  .hero-photo { object-position: 60% 30%; }
  .cards { grid-template-columns: 1fr; }
  .contact-inner { padding: 28px 18px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }