/* BT LABS placeholder: the titanium emblem on its dark-blue hex grid, the name, two links. */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('montserrat-latin.woff2') format('woff2');
}
:root {
  --bg: #02040a;
  --text: #f2f4f8;
  --dim: #9aa3b4;
  --line: #1c2537;
  --silver: #d9dde6;
  color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; -webkit-tap-highlight-color: transparent; }
body {
  margin: 0; min-height: 100svh; display: flex; flex-direction: column;
  background: var(--bg) radial-gradient(70% 55% at 50% 36%, #0b1530 0%, #050b1c 45%, var(--bg) 100%) no-repeat;
  color: var(--text);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 17px; line-height: 1.5; -webkit-font-smoothing: antialiased;
}
a { color: var(--silver); touch-action: manipulation; }
:focus-visible { outline: 2px solid var(--silver); outline-offset: 3px; border-radius: 6px; }
img { display: block; max-width: 100%; height: auto; }

.page {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: clamp(24px, 6vh, 64px) 16px clamp(24px, 4vh, 40px); text-align: center;
}
.emblem { position: relative; width: min(520px, 92vw); }
.emblem {
  /* the square image dissolves into the page */
  -webkit-mask-image: radial-gradient(closest-side, #000 52%, transparent 100%);
  mask-image: radial-gradient(closest-side, #000 52%, transparent 100%);
}
.emblem img { width: 100%; }
h1 {
  margin: -40px 0 0; font-family: 'Montserrat', system-ui, sans-serif; font-weight: 600;
  font-size: clamp(30px, 4.2vw, 48px); letter-spacing: 0.24em; text-indent: 0.24em; line-height: 1.1;
  background: linear-gradient(180deg, #f6f7fa 0%, #c9cfdb 55%, #9aa3b4 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.links { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: clamp(28px, 5vh, 44px); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px;
  border-radius: 8px; border: 1px solid var(--silver); background: var(--silver); color: #070b16;
  font-weight: 600; font-size: 15px; text-decoration: none; white-space: nowrap;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}
.btn:hover { background: #fff; border-color: #fff; }
.btn-quiet { background: transparent; border-color: #2b3650; color: var(--text); }
.btn-quiet:hover { background: rgba(217, 221, 230, 0.07); border-color: #46536f; }
.soon { margin: 28px 0 0; color: var(--dim); font-size: 15px; }
.soon a { color: var(--text); text-decoration: underline; text-underline-offset: 0.18em; text-decoration-color: #46536f; }
.soon a:hover { text-decoration-color: currentColor; }
.foot { padding: 20px 16px 28px; text-align: center; color: #6b7588; font-size: 13px; letter-spacing: 0.04em; }
.foot a { color: inherit; text-decoration: underline; text-underline-offset: 0.18em; text-decoration-color: #46536f; }
.foot a:hover { color: var(--text); text-decoration-color: currentColor; }
@media (max-width: 640px) {
  .links { width: 100%; }
  .btn { flex: 1 1 100%; }
}

/* Text pages (privacy): one readable column. */
.doc { flex: 1; width: 100%; max-width: 720px; margin: 0 auto; padding: clamp(32px, 7vh, 72px) 16px 32px; }
.doc h1 { margin: 0 0 8px; font-size: clamp(26px, 3.4vw, 34px); letter-spacing: 0.02em; text-indent: 0; }
.doc h2 { margin: 32px 0 8px; font-size: 19px; font-weight: 600; color: var(--text); }
.doc p, .doc li { color: #c8cdd8; }
.doc ul { padding-left: 1.2em; }
.doc li { margin: 4px 0; }
.doc .meta { color: var(--dim); font-size: 15px; margin: 0 0 24px; }
.doc .home { display: inline-block; margin-bottom: 24px; font-size: 15px; }