:root {
  --bg: #f7f7f6;
  --ink: #111;
  --muted: #5d5d5d;
  --line: #e2e2e0;
  --panel: #efefed;
  --c1: #111;
  --c2: #111;
  --c3: #111;
  --serif: "Newsreader", Georgia, serif;
  --sans: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  --pad: clamp(20px, 6vw, 96px);
  --max: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); line-height: 1.55; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
p { margin: 0; }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -0.02em; line-height: 1.05; margin: 0; }
em { font-style: italic; font-weight: 500; }
.muted { color: var(--muted); }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px var(--pad);
  background: rgba(247,247,246,.85); backdrop-filter: blur(10px);
}
.brand { display: flex; gap: 8px; align-items: center; font-family: var(--serif); font-weight: 600; line-height: .9; font-size: 1.05rem; }
.mark { width: 32px; height: 32px; }
.nav nav { display: flex; gap: 26px; font-size: .92rem; color: #444; }
.nav nav a:hover { color: var(--ink); }

/* tags & badges */
.tag {
  display: inline-block; font-family: var(--mono); font-size: .72rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: .08em;
  background: var(--ink); color: #fff; padding: 5px 10px;
  border-right: 4px solid var(--ink); box-shadow: 4px 0 0 var(--bg), 7px 0 0 var(--ink);
  margin-bottom: 22px;
}
.tag-light { background: #fff; color: var(--ink); border-color: #fff; box-shadow: none; }
.tag-outline { background: #fff; color: var(--ink); border: 1px solid #ccc; box-shadow: none; }
.tags { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.live { display: inline-block; width: 8px; height: 8px; background: var(--ink); margin-right: 6px; vertical-align: 0; }
.badge {
  display: inline-block; font-family: var(--mono); font-size: .8rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .06em; color: #111; padding: 5px 12px;
  background: linear-gradient(90deg, #d9d9d7, #f2f2f0 50%, #bdbdbb);
  border: 1px solid #cfcfcd;
}

/* buttons */
.btn {
  display: inline-block; cursor: pointer; border: 0;
  font: 500 .92rem var(--sans); padding: 13px 26px; border-radius: 2px;
  transition: transform .15s, background .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-light { background: #e4e4e2; color: var(--ink); }
.btn-white { background: #fff; color: var(--ink); }

/* hero */
.hero { position: relative; overflow: hidden; padding: 120px var(--pad) 0; text-align: center;
  background: radial-gradient(ellipse 70% 60% at 50% 35%, #ffffff 0%, var(--bg) 60%, #ececea 100%); }
#confetti { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.hero-inner { position: relative; max-width: 900px; margin: 0 auto; }
.hero h1 { font-size: clamp(2.4rem, 5.6vw, 4.6rem); margin: 28px 0 24px; }
.sub { color: var(--muted); max-width: 560px; margin: 0 auto 36px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.pillars {
  position: relative; display: grid; grid-template-columns: repeat(3, 1fr);
  max-width: var(--max); margin: 120px auto 0; text-align: left;
  border-top: 1px solid var(--line);
}
.pillars div { padding: 22px 0; display: grid; grid-template-columns: auto 1fr; column-gap: 10px; }
.pillars div + div { padding-left: 24px; border-left: 1px solid var(--line); }
.pillars small { grid-column: 2; color: var(--muted); font-size: .85rem; }
.dot { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-top: 4px; }
.c1 { background: var(--c1); } .c2 { background: var(--c2); } .c3 { background: var(--c3); }

/* dark band */
.band { position: relative; overflow: hidden; background: linear-gradient(180deg, #0b0b0b 0%, #1c1c1c 100%); color: #fff; padding: 140px var(--pad); text-align: center; }
.band-wave { padding-bottom: 300px; }
#tunnel { position: absolute; left: 0; bottom: 0; width: 100%; height: 280px; }
.band-inner { position: relative; max-width: 960px; margin: 0 auto; }
.band h2 { font-size: clamp(2.2rem, 5vw, 4.2rem); margin-bottom: 24px; }
.band p { color: #a8a8a8; max-width: 520px; margin: 0 auto; }

/* sections */
.section { max-width: calc(var(--max) + 2 * var(--pad)); margin: 0 auto; padding: 130px var(--pad); }
.section h2 { font-size: clamp(2rem, 4vw, 3.3rem); max-width: 20ch; margin-bottom: 64px; }
.rowpair { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; padding: 34px 0; border-top: 1px solid var(--line); }
.rowpair h3 { font-size: 1.7rem; max-width: 16ch; }
.bullets { margin: 0; padding: 0; list-style: none; color: #333; font-size: .95rem; }
.bullets li { padding-left: 16px; position: relative; margin-bottom: 8px; }
.bullets li::before { content: "▸"; position: absolute; left: 0; font-size: .75rem; top: 3px; }

/* numbers / engine */
.numbers { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.numbers h2 { margin: 6px 0 16px; }
.glyphs { font-family: var(--mono); color: #777; letter-spacing: .35em; line-height: 1.35; margin-top: 80px; font-size: .9rem; }
.stats { list-style: none; margin: 0; padding: 0; }
.stats li { padding: 26px 0; border-top: 1px solid var(--line); }
.stats strong { display: block; font-family: var(--mono); font-weight: 500; font-size: clamp(1.8rem, 3.4vw, 3rem); letter-spacing: -0.02em; }
.stats span { font-family: var(--mono); text-transform: uppercase; letter-spacing: .08em; font-size: .75rem; color: var(--muted); }

/* cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--panel); padding: 28px; min-height: 220px; display: flex; flex-direction: column; gap: 12px; }
.card h3 { font-size: 1.4rem; margin-top: auto; }
.card p { color: var(--muted); font-size: .92rem; }

/* sign-up */
.band-signup { text-align: left; }
.band-signup .band-inner { max-width: 900px; }
.form { display: grid; grid-template-columns: 1fr 1fr auto; gap: 10px; margin-top: 40px; }
.form input[type=text], .form input[type=email] {
  padding: 13px 16px; border-radius: 2px; font: inherit; border: 1px solid #333;
  background: #161616; color: #fff;
}
.form input::placeholder { color: #888; }
.form input:focus { outline: none; border-color: #fff; }
.check { grid-column: 1 / -1; display: flex; gap: 10px; align-items: center; color: #a8a8a8; font-size: .9rem; margin-top: 6px; }
.check input { accent-color: #fff; }
.form-msg { grid-column: 1 / -1; min-height: 1.4em; font-family: var(--mono); font-size: .82rem; color: #fff; }
.form-msg.error { color: #fff; text-decoration: underline; }

.footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 20px; padding: 36px var(--pad); color: var(--muted); font-size: .82rem; }
.brand-text { font-family: var(--mono); letter-spacing: .25em; color: var(--ink); }

@media (max-width: 820px) {
  .nav nav { display: none; }
  .pillars, .cards, .numbers, .rowpair, .form { grid-template-columns: 1fr; }
  .pillars div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .rowpair { gap: 16px; }
  .glyphs { margin-top: 32px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }