:root {
  --bg: #0b0b0b;
  --bg-2: #121210;
  --fg: #eceae4;
  --muted: #8a8680;
  --line: #2a2a28;
  --accent: #f5f1e6;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); }
body {
  font-family: "IBM Plex Serif", Georgia, serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--fg); text-decoration: none; }
a:hover { opacity: .7; }

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 48px;
  background: rgba(11,11,11,.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  letter-spacing: .12em;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo .tau {
  font-family: "IBM Plex Serif", serif;
  font-size: 26px;
  line-height: 1;
  display: inline-block;
  transform: translateY(-1px);
}
.logo .tau + .tau { margin-left: -10px; opacity: .55; }
.logo-text { margin-left: 10px; letter-spacing: .18em; }
.nav nav a { margin-left: 28px; }
.nav nav a.cta {
  border: 1px solid var(--fg);
  padding: 8px 14px;
  border-radius: 2px;
}
.nav nav a.cta:hover { background: var(--fg); color: var(--bg); opacity: 1; }

/* ---------- hero ---------- */
main { max-width: 860px; margin: 0 auto; padding: 0 48px; }

.hero {
  padding: 140px 0 120px;
  border-bottom: 1px solid var(--line);
}
.meta {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--muted);
  margin-bottom: 36px;
}
.hero h1 {
  font-family: "IBM Plex Serif", serif;
  font-weight: 500;
  font-size: 68px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 32px;
}
.hero h1 em {
  font-style: italic;
  color: var(--muted);
  font-weight: 400;
}
.byline {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
  margin: 0 0 48px;
}
.byline span { color: var(--fg); }

.ca {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 36px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  max-width: 100%;
  flex-wrap: wrap;
}
.ca-label {
  color: var(--muted);
  letter-spacing: .18em;
}
.ca code {
  color: var(--fg);
  word-break: break-all;
}
.ca button {
  background: var(--fg);
  color: var(--bg);
  border: none;
  padding: 6px 10px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: .14em;
  cursor: pointer;
}
.ca button:hover { opacity: .85; }
.download {
  display: flex;
  gap: 20px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  letter-spacing: .14em;
}
.download a {
  border: 1px solid var(--line);
  padding: 14px 22px;
}
.download a:hover { border-color: var(--fg); opacity: 1; }

/* ---------- sections ---------- */
.section {
  padding: 96px 0;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.num {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
  margin-bottom: 18px;
}
.section h2 {
  font-family: "IBM Plex Serif", serif;
  font-weight: 500;
  font-size: 38px;
  letter-spacing: -0.01em;
  margin: 0 0 36px;
}
.section p {
  max-width: 68ch;
  color: #d8d4cc;
  margin: 0 0 20px;
}

/* papers */
.paper {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}
.paper:last-child { border-bottom: 1px solid var(--line); }
.paper h3 {
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--fg);
  margin: 0 0 14px;
}
.paper p { max-width: 70ch; color: #cfccc4; }
.paper.featured {
  background: var(--bg-2);
  border: 1px solid var(--line);
  padding: 32px 32px 28px;
  margin-bottom: 8px;
}
.paper-tag {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  letter-spacing: .22em;
  color: #c9a96a;
  margin-bottom: 14px;
}
.paper blockquote {
  margin: 18px 0;
  padding: 14px 22px;
  border-left: 2px solid #c9a96a;
  font-family: "IBM Plex Serif", serif;
  font-style: italic;
  font-size: 17px;
  color: #e6e2d8;
  max-width: 70ch;
}
.paper-foot {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--muted) !important;
  margin-top: 18px !important;
}
.paper-foot a { color: #c9a96a; }

/* leaks grid */
.leaks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 12px;
}
.leak {
  background: var(--bg);
  padding: 28px 26px;
}
.leak-tag {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  letter-spacing: .22em;
  color: var(--muted);
  margin-bottom: 12px;
}
.leak-title {
  font-family: "IBM Plex Serif", serif;
  font-size: 19px;
  line-height: 1.3;
  margin-bottom: 12px;
}
.leak p { font-size: 14.5px; color: #b8b5ad; margin: 0; }

/* contact */
.contact {
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  list-style: none;
  padding: 0;
  margin: 8px 0 28px;
}
.contact li { padding: 8px 0; border-bottom: 1px dashed var(--line); }
.contact code {
  color: var(--fg);
  background: var(--bg-2);
  padding: 2px 6px;
  border-radius: 2px;
}
.fine { font-size: 13px; color: var(--muted); font-style: italic; }

/* footer */
footer {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 48px 80px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

/* responsive */
@media (max-width: 760px) {
  .nav { padding: 18px 22px; flex-wrap: wrap; gap: 12px; }
  .nav nav a { margin-left: 0; margin-right: 18px; }
  main, footer { padding-left: 22px; padding-right: 22px; }
  .hero { padding: 80px 0 70px; }
  .hero h1 { font-size: 40px; }
  .section { padding: 64px 0; }
  .section h2 { font-size: 28px; }
  .leaks { grid-template-columns: 1fr; }
}