/* Into Silicon. One dark world: the colors a polished wafer shows under light. */
:root {
  --bg: #060914;
  --surface: #0b1022;
  --raise: #111933;
  --line: rgba(238, 242, 250, 0.11);
  --ink: #eef2fa;
  --dim: rgba(238, 242, 250, 0.68);
  --faint: rgba(238, 242, 250, 0.4);
  --cyan: #6fe3ff;
  --violet: #9c8cff;
  --rose: #e3a6ff;
  --core: #ddf8ff;
  --spectrum: linear-gradient(90deg, var(--cyan), var(--violet) 55%, var(--rose));
  --display: "Unbounded", "Arial Black", system-ui, sans-serif;
  --body: "Manrope", "Segoe UI", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--cyan); }
h1, h2, h3 { font-family: var(--display); line-height: 1.12; margin: 0; text-wrap: balance; }
h2 { font-size: clamp(1.6rem, 3.6vw, 2.5rem); font-weight: 700; letter-spacing: -0.015em; }
h3 { font-size: 1.05rem; font-weight: 700; }
p { margin: 0; }
.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}
.spectrum { background-image: var(--spectrum); -webkit-background-clip: text; background-clip: text; color: transparent; }
.eyebrow { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); margin-bottom: 14px; }
section { padding-block: 110px; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--body); font-weight: 700; font-size: 0.98rem; text-decoration: none;
  color: #060914; background: var(--ink);
  padding: 13px 22px; border-radius: 999px; border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); background: #fff; }
.btn-ghost { background: transparent; color: var(--ink); border-color: rgba(238, 242, 250, 0.28); }
.btn-ghost:hover { background: rgba(238, 242, 250, 0.06); border-color: rgba(238, 242, 250, 0.5); }
.btn-small { padding: 8px 16px; font-size: 0.88rem; }
.btn:focus-visible, .stop:focus-visible, .nav a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

/* nav */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  padding-top: env(safe-area-inset-top, 0px);
  background: linear-gradient(180deg, rgba(6, 9, 20, 0.92), rgba(6, 9, 20, 0.55) 70%, rgba(6, 9, 20, 0));
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto; height: 68px;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-family: var(--display); font-weight: 500; font-size: 1.02rem; letter-spacing: -0.01em; }
.brand img { border-radius: 50%; }
.brand b { font-weight: 500; background-image: var(--spectrum); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav nav { display: flex; gap: 28px; }
.nav nav a { color: var(--dim); text-decoration: none; font-weight: 600; font-size: 0.94rem; }
.nav nav a:hover { color: var(--ink); }
@media (max-width: 760px) { .nav nav { display: none; } }

/* hero */
.hero {
  position: relative; min-height: 100svh; padding-block: 0;
  display: flex; align-items: flex-start; justify-content: center; overflow: hidden;
  background: radial-gradient(ellipse 70% 50% at 50% 34%, rgba(156, 140, 255, 0.14), rgba(6, 9, 20, 0) 70%);
}
.horizon { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-copy {
  position: relative; z-index: 1; text-align: center;
  padding-top: calc(18svh + 40px);
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
  max-width: 820px;
}
.wordmark { font-weight: 500; font-size: clamp(3rem, 10vw, 6.6rem); letter-spacing: -0.03em; line-height: 0.95; margin-bottom: 22px; }
.lede { font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--dim); max-width: 600px; margin: 0 auto; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.status { display: inline-flex; align-items: center; gap: 10px; margin-top: 26px; font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.08em; color: var(--faint); text-transform: uppercase; }
.status i { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
@media (prefers-reduced-motion: reduce) { .status i { animation: none; } }

/* journey */
.journey { background: linear-gradient(180deg, var(--bg), #070b1a 40%, var(--bg)); }
.intro { color: var(--dim); max-width: 620px; margin-top: 16px; }
.journey-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; margin-top: 48px; align-items: start; }
.zoom { position: sticky; top: 100px; aspect-ratio: 1 / 1; max-width: 100%; border-radius: 22px; overflow: hidden; border: 1px solid var(--line); background: radial-gradient(circle at 50% 45%, #121a3a, #070a16 70%); }
.zoom canvas { width: 100%; height: 100%; display: block; }
.zoom-scale { position: absolute; left: 14px; bottom: 14px; font-family: var(--mono); font-size: 0.8rem; color: var(--cyan); letter-spacing: 0.06em; background: rgba(6, 9, 20, 0.8); border: 1px solid var(--line); padding: 4px 10px; border-radius: 999px; }
.stops { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.stop {
  width: 100%; text-align: left; cursor: pointer;
  display: grid; gap: 4px; padding: 18px 20px; border-radius: 14px;
  background: transparent; border: 1px solid var(--line); color: var(--ink); font: inherit;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.stop:hover { background: rgba(238, 242, 250, 0.03); }
.stop .scale { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--faint); }
.stop .name { font-family: var(--display); font-weight: 700; font-size: 1.08rem; }
.stop .fact { color: var(--dim); font-size: 0.95rem; display: none; }
.stop.is-active { background: var(--surface); border-color: rgba(111, 227, 255, 0.45); }
.stop.is-active .scale { color: var(--cyan); }
.stop.is-active .fact { display: block; }
@media (max-width: 860px) {
  .journey-grid { grid-template-columns: 1fr; gap: 24px; }
  .zoom { position: relative; top: 0; max-width: 520px; width: 100%; }
}

/* episodes */
.ep-list { list-style: none; margin: 40px 0 0; padding: 0; display: grid; gap: 12px; }
.ep {
  display: grid; grid-template-columns: 4rem minmax(0, 1fr) auto; gap: 18px; align-items: center;
  padding: 22px 24px; border-radius: 16px; background: var(--surface); border: 1px solid var(--line);
}
.ep-n { font-family: var(--display); font-weight: 800; font-size: 1.6rem; background-image: var(--spectrum); -webkit-background-clip: text; background-clip: text; color: transparent; }
.ep h3 { margin-bottom: 6px; }
.ep p { color: var(--dim); font-size: 0.96rem; }
.chip { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase; padding: 5px 10px; border-radius: 999px; border: 1px solid rgba(111, 227, 255, 0.5); color: var(--cyan); white-space: nowrap; }
.chip-muted { border-color: var(--line); color: var(--faint); }
@media (max-width: 640px) {
  .ep { grid-template-columns: 2.6rem minmax(0, 1fr); padding: 18px; }
  .ep .chip { grid-column: 2; justify-self: start; }
}

/* how */
.how-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 40px; }
.how-item { padding: 26px; border-radius: 16px; border: 1px solid var(--line); background: linear-gradient(180deg, var(--surface), rgba(11, 16, 34, 0.4)); }
.how-item h3 { margin-bottom: 10px; }
.how-item p { color: var(--dim); font-size: 0.96rem; }
@media (max-width: 860px) { .how-grid { grid-template-columns: 1fr; } }

/* footer */
.foot { border-top: 1px solid var(--line); padding-block: 40px calc(40px + env(safe-area-inset-bottom, 0px)); }
.foot-inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.foot-brand { display: flex; gap: 14px; align-items: center; }
.foot-brand img { border-radius: 50%; }
.foot-word { font-family: var(--display); font-weight: 500; font-size: 1.15rem; }
.foot-tag { color: var(--faint); font-size: 0.88rem; }
.foot-links { display: flex; gap: 22px; align-items: center; color: var(--faint); font-size: 0.9rem; }
.foot-links a { color: var(--dim); text-decoration: none; font-weight: 600; }
.foot-links a:hover { color: var(--ink); }