/* Theme tokens. Dark is the default; light follows the system setting. */
:root {
  color-scheme: light dark;

  --bg: #080b17;
  --bg-rgb: 8 11 23;
  --ink: #e4e9ff;
  --text: #a5b1da;
  --muted: #8997c5;
  --blue: #6b8dff;
  --soft: #b8c6ff;
  --line: rgb(151 169 231 / 0.22);

  /* Grainy gradients: colours only, the grain itself comes from the #grain filter in index.html */
  --blend: screen;
  --field-a: rgb(107 141 255 / 0.9);
  --field-b: rgb(67 112 255 / 0.25);
  --orb-1a: rgb(67 112 255 / 0.9);
  --orb-1b: rgb(47 76 175 / 0.2);
  --orb-2: rgb(184 198 255 / 0.7);

  --font: "Timeless Sans", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --gutter: clamp(24px, 6.2vw, 96px);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7fc;
    --bg-rgb: 246 247 252;
    --ink: #0e1636;
    --text: #3f4b78;
    --muted: #5a6791;
    --blue: #3552d1;
    --soft: #2a3fa8;
    --line: rgb(42 63 168 / 0.16);

    --blend: multiply;
    --field-a: rgb(53 82 209 / 0.7);
    --field-b: rgb(53 82 209 / 0.22);
    --orb-1a: rgb(53 82 209 / 0.55);
    --orb-1b: rgb(42 63 168 / 0.2);
    --orb-2: rgb(107 141 255 / 0.7);
  }
}

* {
  box-sizing: border-box;
}
html {
  background: var(--bg);
}
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--soft);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
a:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 2px;
}

.site-shell {
  min-height: 100vh;
  overflow: hidden;
  position: relative;
  isolation: isolate;
}
.site-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgb(var(--bg-rgb) / 0.92) 0%, rgb(var(--bg-rgb) / 0.65) 38%, rgb(var(--bg-rgb) / 0.05) 100%),
    linear-gradient(180deg, rgb(var(--bg-rgb) / 0.08), var(--bg) 88%);
}

.topbar {
  height: 92px;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.topbar-meta {
  display: flex;
  align-items: center;
  gap: 28px;
}
.lang-switch {
  display: flex;
  gap: 12px;
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--muted);
}
.lang-switch a:hover {
  color: var(--blue);
}
.lang-switch [aria-current] {
  color: var(--ink);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.045em;
  color: var(--ink);
}
.brand-mark {
  width: 38px;
  height: 32px;
  display: block;
}
.topbar-note,
.eyebrow,
.principle-number,
.art-caption,
.hero-index,
.footer-fine {
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.hero {
  min-height: 600px;
  position: relative;
  padding: clamp(82px, 11vw, 160px) var(--gutter) 100px;
  border-bottom: 1px solid var(--line);
}
.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 580px;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 32px;
}
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 14px var(--blue);
}
h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(58px, 8vw, 112px);
  line-height: 0.98;
  letter-spacing: -0.085em;
  font-weight: 500;
}
/* The tagline lives inside the h1 (for search engines) but looks the same as before */
.tagline {
  display: block;
  margin: 25px 0 0;
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 400;
  line-height: normal;
  letter-spacing: -0.045em;
  color: var(--blue);
}
.intro {
  margin: 32px 0 0;
  color: var(--text);
  font-size: 15px;
  line-height: 1.9;
}
.text-link {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 34px;
  font-size: 12px;
  color: var(--muted);
}
.text-link span {
  color: var(--soft);
}
.text-link b {
  color: var(--blue);
  margin-left: 5px;
}

/* Grainy gradients */
.hero-art {
  position: absolute;
  right: -4%;
  top: 0;
  width: 65%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
  opacity: 0.95;
}
.hero-art::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 65% 45%, var(--field-a), var(--field-b) 45%, transparent 70%);
  filter: url(#grain);
}
.orb {
  position: absolute;
  border-radius: 50%;
  mix-blend-mode: var(--blend);
  filter: url(#grain);
}
.orb-one {
  width: 48%;
  aspect-ratio: 1;
  right: 8%;
  top: 4%;
  background: radial-gradient(circle, var(--orb-1a), var(--orb-1b) 65%, transparent 72%);
}
.orb-two {
  width: 30%;
  aspect-ratio: 1;
  right: 37%;
  bottom: 2%;
  background: radial-gradient(circle, var(--orb-2), transparent 70%);
}
.art-caption {
  position: absolute;
  bottom: 24px;
  right: 7%;
  left: 10%;
  display: flex;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.hero-index {
  position: absolute;
  bottom: 25px;
  left: var(--gutter);
  display: flex;
  gap: 14px;
  align-items: center;
}
.index-line {
  width: 40px;
  height: 1px;
  background: var(--blue);
}

@media (prefers-reduced-motion: reduce) {
  .flock {
    display: none;
  }
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--line);
}
.principles article {
  padding: 36px clamp(22px, 3.2vw, 48px) 42px;
  border-right: 1px solid var(--line);
  background: rgb(var(--bg-rgb) / 0.72);
}
.principles article:first-child {
  padding-left: var(--gutter);
}
.principles article:last-child {
  border-right: 0;
}
.principle-number {
  color: var(--blue);
}
h2 {
  margin: 24px 0 12px;
  color: var(--ink);
  font-size: clamp(18px, 2vw, 25px);
  letter-spacing: -0.055em;
  font-weight: 500;
}
.principles p {
  max-width: 280px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
}

/* Footer */
.footer {
  padding: 56px var(--gutter) 28px;
  background: rgb(var(--bg-rgb) / 0.82);
}
.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}
.brand-footer {
  font-size: 16px;
}
.brand-footer img {
  width: 30px;
  height: 26px;
}
.footer-claim {
  margin: 0;
  font-size: 15px;
  letter-spacing: -0.03em;
  color: var(--text);
}
.footer-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 240px));
  justify-content: center;
  gap: 40px 32px;
  padding: 40px 0;
}
.footer-title {
  margin: 0 0 16px;
  font-size: 13px;
  letter-spacing: -0.01em;
  color: var(--blue);
}
.footer address {
  font-style: normal;
}
.footer address,
.footer dd,
.footer li {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
}
.footer dl {
  display: grid;
  gap: 14px;
  margin: 0;
}
.footer dt {
  font-size: 11px;
  color: var(--muted);
}
.footer dd {
  margin: 2px 0 0;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer li + li {
  margin-top: 6px;
}
.footer a:hover {
  color: var(--blue);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.footer-legal {
  display: flex;
  gap: 20px;
}

@media (max-width: 720px) {
  .topbar {
    height: 76px;
  }
  .topbar-note {
    display: none;
  }
  .hero {
    min-height: 640px;
    padding-top: 105px;
  }
  .hero-art {
    top: 190px;
    right: -25%;
    width: 110%;
    height: 420px;
    opacity: 0.62;
  }
  .hero-copy {
    max-width: 100%;
  }
  .desktop-break {
    display: none;
  }
  .intro {
    max-width: 390px;
  }
  .principles {
    grid-template-columns: 1fr;
  }
  .principles article,
  .principles article:first-child {
    padding: 28px 24px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .principles article:last-child {
    border-bottom: 0;
  }
  .footer {
    padding-top: 40px;
  }
  .footer-top,
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }
  .footer-details {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 720px) and (prefers-color-scheme: light) {
  .hero-art {
    opacity: 0.4;
  }
}