/* ============================================
   BlackN0de Security Group — stylesheet
   Typography: IBM Plex Sans / Serif / Mono
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&family=IBM+Plex+Sans:wght@300;400;500;600;700&family=IBM+Plex+Serif:wght@500;600;700&display=swap');

/* ---------- color tokens ---------- */

:root {
  --bg: #0a0c0f;
  --bg-elev: #11141a;
  --bg-elev-2: #161a21;
  --ink: #e8eaed;
  --ink-dim: #9097a3;
  --ink-faint: #5a606b;
  --line: #1f242d;
  --line-strong: #2c3340;
  --accent: #d92534;
  --accent-soft: #d9253420;
  --signal: #00b894;
  --warn: #d4a017;
  --grid: rgba(255, 255, 255, 0.022);
  --scanline: rgba(255, 255, 255, 0.014);
  --glow: 0 0 24px rgba(217, 37, 52, 0.28);
  --shadow-card: 0 1px 0 rgba(255,255,255,0.04) inset, 0 20px 40px -20px rgba(0,0,0,0.6);

  --font-display: 'IBM Plex Serif', Georgia, serif;
  --font-body: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f3ee;
    --bg-elev: #ffffff;
    --bg-elev-2: #ece8df;
    --ink: #14171c;
    --ink-dim: #4b525e;
    --ink-faint: #8b8f99;
    --line: #d8d3c7;
    --line-strong: #b3ad9e;
    --accent: #b21e2c;
    --accent-soft: #b21e2c14;
    --signal: #0a7361;
    --warn: #8b6500;
    --grid: rgba(0, 0, 0, 0.04);
    --scanline: rgba(0, 0, 0, 0.018);
    --glow: 0 0 18px rgba(178, 30, 44, 0.18);
    --shadow-card: 0 1px 0 rgba(0,0,0,0.02) inset, 0 12px 30px -18px rgba(0,0,0,0.16);
  }
}

/* ---------- reset ---------- */

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
img { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }
a { color: inherit; text-decoration: none; }

/* ---------- base ---------- */

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  overflow-x: hidden;
  font-feature-settings: 'kern' 1, 'liga' 1;
}

/* ambient grid + scanlines */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse at 50% 30%, black 30%, transparent 80%);
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    var(--scanline) 0 1px,
    transparent 1px 4px
  );
  pointer-events: none;
  z-index: 1;
  mix-blend-mode: overlay;
}

/* ---------- typography ---------- */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.1;
  margin: 0;
}

h1 {
  font-size: clamp(2.4rem, 5.5vw, 4.4rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.05;
}
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.35rem); font-weight: 600; }
h4 { font-size: 1rem; font-weight: 600; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

p { color: var(--ink-dim); font-weight: 400; }

::selection { background: var(--accent); color: #fff; }

/* ---------- layout ---------- */

.page { position: relative; z-index: 2; }

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
}

@media (max-width: 720px) {
  .container { padding: 0 20px; }
}

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  color: var(--ink-faint);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-top: 4px;
}

.nav-links {
  display: flex;
  gap: 32px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-left: auto;
  margin-right: 32px;
}

.nav-links a {
  color: var(--ink-dim);
  padding: 8px 0;
  position: relative;
  transition: color 0.2s ease;
}

.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); }

.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent);
}

.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--ink-faint);
  text-transform: uppercase;
  flex-shrink: 0;
}

.pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 8px var(--signal);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  width: 38px;
  height: 38px;
  padding: 0;
  align-items: center;
  justify-content: center;
}

@media (max-width: 880px) {
  .nav-links, .nav-status { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--line);
    padding: 8px 20px 16px;
    gap: 0;
    margin: 0;
  }
  .nav-links.open a {
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
  }
  .nav-links.open a:last-child { border-bottom: none; }
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink);
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn:hover { border-color: var(--accent); color: var(--accent); }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: transparent;
  color: var(--accent);
  box-shadow: var(--glow);
}

.btn::after { content: '→'; font-family: var(--font-mono); }

/* ---------- hero ---------- */

.hero {
  position: relative;
  padding: 88px 0 120px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 72px;
  align-items: center;
}

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero { padding: 56px 0 80px; }
}

.hero-meta {
  display: flex;
  gap: 28px;
  margin-bottom: 36px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  flex-wrap: wrap;
}

.hero-meta span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-meta span::before {
  content: '';
  width: 5px; height: 5px;
  background: var(--accent);
  display: inline-block;
}

.hero h1 {
  margin-bottom: 28px;
  animation: rise 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) both;
  max-width: 14ch;
}

.hero h1 .glitch {
  display: inline-block;
  position: relative;
  color: var(--accent);
  font-style: italic;
  font-weight: 600;
}

.hero-lead {
  font-size: 16px;
  color: var(--ink-dim);
  max-width: 56ch;
  margin-bottom: 40px;
  line-height: 1.65;
  animation: rise 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) 0.15s both;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  animation: rise 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) 0.3s both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- terminal panel ---------- */

.terminal {
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  box-shadow: var(--shadow-card);
  position: relative;
  animation: rise 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) 0.4s both;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-elev-2);
}

.terminal-dots { display: flex; gap: 6px; }
.terminal-dots span {
  width: 9px; height: 9px;
  background: var(--line-strong);
  border-radius: 50%;
}

.terminal-title {
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-left: auto;
}

.terminal-body {
  padding: 22px;
  line-height: 1.85;
  color: var(--ink-dim);
  min-height: 280px;
}

.terminal-body .prompt { color: var(--accent); user-select: none; }
.terminal-body .cmd { color: var(--ink); }
.terminal-body .out { color: var(--ink-dim); }
.terminal-body .ok { color: var(--signal); }
.terminal-body .warn { color: var(--warn); }
.terminal-body .cursor {
  display: inline-block;
  width: 7px;
  height: 14px;
  background: var(--accent);
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: blink 1s steps(1) infinite;
}

@keyframes blink { 50% { opacity: 0; } }

/* ---------- ticker strip ---------- */

.strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
  overflow: hidden;
  background: var(--bg-elev);
}

.strip-track {
  display: flex;
  gap: 56px;
  animation: scroll 50s linear infinite;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.strip-track span {
  display: inline-flex;
  align-items: center;
  gap: 56px;
  flex-shrink: 0;
}

.strip-track span::after {
  content: '◆';
  color: var(--accent);
  font-size: 10px;
}

@keyframes scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- section primitives ---------- */

.section { padding: 100px 0; position: relative; }
@media (max-width: 720px) { .section { padding: 64px 0; } }

.section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 56px;
  align-items: end;
  margin-bottom: 64px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

@media (max-width: 720px) {
  .section-head { grid-template-columns: 1fr; gap: 16px; margin-bottom: 40px; }
}

.section-num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-bottom: 16px;
}

/* ---------- doctrine tenets ---------- */

.tenets {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

@media (max-width: 820px) { .tenets { grid-template-columns: 1fr; } }

.tenet {
  padding: 40px 36px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: background 0.3s ease;
}

.tenet:hover { background: var(--bg-elev); }

.tenet-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.tenet-tag::before {
  content: '';
  width: 24px; height: 1px;
  background: var(--accent);
}

.tenet h3 { margin-bottom: 14px; }
.tenet p { font-size: 14px; margin: 0; line-height: 1.6; }

/* ---------- page header ---------- */

.page-header {
  padding: 88px 0 56px;
  border-bottom: 1px solid var(--line);
}

@media (max-width: 720px) { .page-header { padding: 48px 0 36px; } }

.crumbs {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 28px;
}

.crumbs a { color: var(--ink-dim); }
.crumbs a:hover { color: var(--accent); }
.crumbs span { color: var(--accent); margin: 0 10px; }

.page-header h1 { margin-bottom: 20px; }
.page-header .lead {
  font-size: 17px;
  color: var(--ink-dim);
  max-width: 68ch;
  line-height: 1.55;
}

/* ---------- filter chips ---------- */

.filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 36px 0 0;
}

.filter-chip {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 9px 16px;
  border: 1px solid var(--line-strong);
  color: var(--ink-dim);
  background: transparent;
  transition: all 0.2s ease;
  cursor: pointer;
}

.filter-chip:hover { color: var(--ink); border-color: var(--ink-dim); }
.filter-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ---------- papers ---------- */

.papers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

.paper {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 36px;
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
  transition: padding 0.3s ease;
  position: relative;
}

.paper:hover { padding-left: 16px; }
.paper:hover .paper-title { color: var(--accent); }

@media (max-width: 720px) {
  .paper { grid-template-columns: 1fr; gap: 14px; padding: 28px 0; }
  .paper:hover { padding-left: 0; }
}

.paper-id {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--ink-faint);
}

.paper-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
  transition: color 0.2s ease;
  line-height: 1.25;
}

.paper-abstract {
  font-size: 14px;
  color: var(--ink-dim);
  max-width: 68ch;
  margin: 0 0 14px;
  line-height: 1.6;
}

.paper-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.paper-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 9px;
  border: 1px solid var(--line-strong);
  color: var(--ink-dim);
}

.paper-meta {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-end;
}

@media (max-width: 720px) {
  .paper-meta { text-align: left; align-items: flex-start; }
}

.paper-classification {
  padding: 4px 10px;
  border: 1px solid var(--accent);
  color: var(--accent);
}
.paper-classification.unclass {
  border-color: var(--signal);
  color: var(--signal);
}

/* ---------- projects grid ---------- */

.proj-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (max-width: 980px) { .proj-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .proj-grid { grid-template-columns: 1fr; } }

.proj {
  background: var(--bg);
  padding: 28px;
  position: relative;
  transition: background 0.25s ease;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  min-height: 380px;
}

.proj:hover { background: var(--bg-elev); }
.proj:hover .proj-visual { transform: scale(1.02); }
.proj:hover .proj-arrow { color: var(--accent); transform: translate(4px, -4px); }
.proj:hover .proj-name { color: var(--accent); }

.proj-visual {
  aspect-ratio: 16 / 10;
  background: var(--bg-elev-2);
  border: 1px solid var(--line);
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
  transition: transform 0.4s ease;
}

.proj-visual svg { width: 100%; height: 100%; display: block; }

.proj-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
  gap: 12px;
}

.proj-host {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding: 4px 8px;
  border: 1px solid var(--line-strong);
  white-space: nowrap;
}

.proj-arrow {
  font-family: var(--font-mono);
  color: var(--ink-faint);
  font-size: 18px;
  transition: all 0.25s ease;
  line-height: 1;
}

.proj-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
  transition: color 0.2s ease;
}

.proj-subtitle {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 12px;
}

.proj-desc {
  font-size: 13.5px;
  color: var(--ink-dim);
  margin: 0 0 auto;
  padding-bottom: 16px;
  line-height: 1.55;
}

.proj-footer {
  display: flex;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

/* ---------- about ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 80px;
  padding: 80px 0;
}

@media (max-width: 980px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; padding: 56px 0; }
}

.about-prose p {
  font-size: 16px;
  color: var(--ink);
  margin-bottom: 24px;
  max-width: 62ch;
  line-height: 1.65;
}

.about-prose p:first-of-type::first-letter {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 600;
  float: left;
  line-height: 0.95;
  margin: 6px 14px 0 -2px;
  color: var(--accent);
}

.about-prose .prose-h2 {
  margin-top: 64px;
  margin-bottom: 16px;
}

.stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  position: sticky;
  top: 100px;
  align-self: start;
}

.stat {
  background: var(--bg-elev);
  padding: 26px 22px;
}

.stat-num {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 38px;
  line-height: 1;
  margin-bottom: 8px;
  color: var(--accent);
  letter-spacing: -0.025em;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* prereqs list */
.prereqs {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  counter-reset: item;
}

.prereqs li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: baseline;
  gap: 16px;
  font-size: 14px;
  color: var(--ink);
  line-height: 1.55;
}

.prereqs li::before {
  content: '0' counter(item);
  counter-increment: item;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--accent);
  min-width: 24px;
}

.prereqs-spaced li { padding: 16px 0; }

/* timeline */
.timeline {
  border-left: 1px solid var(--line);
  padding-left: 32px;
  margin-top: 32px;
}

.timeline-entry {
  margin-bottom: 36px;
  position: relative;
}

.timeline-entry::before {
  content: '';
  position: absolute;
  left: -37px;
  top: 10px;
  width: 9px;
  height: 9px;
  background: var(--accent);
  border: 1px solid var(--bg);
  box-shadow: 0 0 0 1px var(--accent);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.timeline-entry h4 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  margin-bottom: 8px;
}

.timeline-entry p {
  font-size: 14px;
  margin: 0;
  line-height: 1.6;
  max-width: 62ch;
}

/* join cta */
.join-cta {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  padding: 64px;
  margin: 80px 0 0;
  position: relative;
  overflow: hidden;
}

@media (max-width: 720px) { .join-cta { padding: 40px 24px; } }

.join-cta::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.join-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 48px;
  align-items: start;
  position: relative;
  z-index: 1;
}

@media (max-width: 820px) {
  .join-grid { grid-template-columns: 1fr; gap: 24px; }
}

.join-cta h2 { margin-bottom: 18px; }
.join-cta > .join-grid > div > p {
  font-size: 15.5px;
  max-width: 56ch;
  margin: 0;
  line-height: 1.6;
}

.join-cta .btn-primary {
  justify-self: end;
  font-size: 13px;
  padding: 16px 28px;
}

@media (max-width: 820px) {
  .join-cta .btn-primary { justify-self: start; }
}

.join-cta .eyebrow { margin-bottom: 16px; display: block; }

/* ---------- footer ---------- */

.footer {
  border-top: 1px solid var(--line);
  margin-top: 120px;
  padding: 56px 0 36px;
  position: relative;
  z-index: 2;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 56px;
  margin-bottom: 48px;
}

@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer { margin-top: 80px; }
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 18px;
}

.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 10px; font-size: 13.5px; }
.footer-col a { color: var(--ink-dim); transition: color 0.2s; }
.footer-col a:hover { color: var(--accent); }

.footer-tag {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.footer-blurb {
  font-size: 13.5px;
  max-width: 38ch;
  margin: 0;
  line-height: 1.6;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  gap: 16px;
}

@media (max-width: 720px) {
  .footer-bottom { flex-direction: column; gap: 14px; text-align: center; }
}