:root,
[data-theme='light'] {
  --bg: #fafafa;
  --bg-2: #f4f4f5;
  --bg-3: #e7e7e9;
  --ink: #111113;
  --ink-2: #2e2e30;
  --ink-mute: #6b6b6e;
  --ink-dim: #b3b3b5;
  --rule: rgba(17, 17, 19, 0.10);
  --rule-strong: rgba(17, 17, 19, 0.22);
  --accent: oklch(55% .12 35);
  --accent-soft: color-mix(in oklch, oklch(55% .12 35) 18%, transparent);
  --mark: oklch(55% .19 22);
  --c-tokens: oklch(52% .105 223.128);
  --c-traits: oklch(50.8% .118 165.612);
  --c-corpus: oklch(64.6% .222 41.116);
  --page-x: clamp(1rem, 5vw, 5.5rem);
  --font-sans: 'Geist', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  color: var(--ink);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100svh;
  margin: 0;
  background:
    linear-gradient(180deg, rgba(250, 250, 250, 0.92), rgba(250, 250, 250, 1) 32rem),
    repeating-linear-gradient(90deg, rgba(17, 17, 19, 0.025) 0 1px, transparent 1px 6.25rem);
  color: var(--ink);
  display: flex;
  flex-direction: column;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body::after {
  content: '';
  position: fixed;
  inset: auto -3vmin -3vmin auto;
  width: 24vmin;
  height: 24vmin;
  pointer-events: none;
  background: url('./assets/milgram_logo_v0.png') center / contain no-repeat;
  filter: brightness(0);
  mix-blend-mode: multiply;
  opacity: 0.025;
  z-index: 0;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

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

.site-top {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  min-height: 3.25rem;
  padding: 0.62rem var(--page-x);
  border-bottom: 1px solid var(--rule);
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.62rem;
  min-width: 0;
}

.brand-mark {
  width: 1.65rem;
  height: 1.65rem;
  object-fit: contain;
  filter: brightness(0);
  mix-blend-mode: multiply;
}

.brand-word {
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  white-space: nowrap;
}

main,
.site-footer {
  position: relative;
  z-index: 1;
}

main {
  flex: 1;
}

.hero {
  display: flex;
  align-items: center;
  min-height: clamp(38rem, calc(100svh - 7.5rem), 50rem);
  overflow: hidden;
  padding: clamp(3.5rem, 9vw, 7rem) var(--page-x) clamp(3rem, 6vw, 5.25rem);
}

.hero-copy {
  max-width: 58rem;
  position: relative;
  z-index: 2;
}

.kicker-mono,
.signal-cell span,
.form-note,
.panel-head .ph-sub {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.kicker-mono {
  margin: 0 0 1.2rem;
  color: var(--accent);
  font-size: clamp(1rem, 1.8vw, 1.55rem);
  letter-spacing: 0.08em;
}

h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(4.8rem, 13vw, 12rem);
  font-weight: 620;
  line-height: 0.86;
  letter-spacing: 0;
}

.hero-line {
  max-width: 42rem;
  margin: clamp(1.7rem, 3vw, 2.6rem) 0 0;
  color: var(--ink);
  font-size: clamp(1.45rem, 3.4vw, 3.2rem);
  font-weight: 520;
  line-height: 1.04;
  letter-spacing: 0;
}

.hero-text {
  max-width: 34rem;
  margin: 1.1rem 0 0;
  color: var(--ink-mute);
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  line-height: 1.55;
}

.subscribe-form {
  display: grid;
  grid-template-columns: minmax(13rem, 22rem) auto;
  gap: 0.55rem;
  align-items: start;
  max-width: 36rem;
  margin-top: clamp(2.1rem, 4vw, 3.4rem);
}

.subscribe-form input {
  width: 100%;
  min-height: 2.75rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--bg-2);
  color: var(--ink);
  outline: none;
  padding: 0.68rem 0.78rem;
  transition: border-color 160ms ease, background 160ms ease;
}

.subscribe-form input:focus {
  border-color: var(--accent);
  background: var(--bg);
}

.subscribe-form input::placeholder {
  color: var(--ink-dim);
}

.subscribe-form button {
  grid-column: 2;
  grid-row: 1;
  min-height: 2.75rem;
  border: 0;
  border-radius: 4px;
  background: var(--accent);
  color: var(--bg);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.72rem 1.05rem;
  white-space: nowrap;
  transition: background 160ms ease, transform 160ms ease;
}

.subscribe-form button:hover {
  background: color-mix(in oklch, var(--accent) 85%, var(--ink));
}

.subscribe-form button:active {
  transform: translateY(1px);
}

.captcha-row {
  grid-column: 1 / -1;
  display: none;
  min-height: 5.4rem;
  margin-top: 0.2rem;
}

.captcha-row.is-visible {
  display: block;
}

.captcha-note {
  min-height: 1rem;
  margin: 0.35rem 0 0;
  color: var(--mark);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.form-note {
  grid-column: 1 / -1;
  min-height: 1.1rem;
  margin: 0.1rem 0 0;
  color: var(--ink-dim);
}

.form-note.is-error {
  color: var(--mark);
}

.form-note.is-success {
  color: var(--c-traits);
}

.signal-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0 var(--page-x);
  background: var(--rule);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.signal-cell {
  min-width: 0;
  background: color-mix(in oklab, var(--bg) 92%, white);
  padding: clamp(1.1rem, 2.4vw, 1.65rem);
}

.signal-cell span {
  display: block;
  color: var(--ink-mute);
}

.signal-cell strong {
  display: block;
  margin-top: 0.55rem;
  color: var(--ink);
  font-size: clamp(1.45rem, 3vw, 2.55rem);
  font-weight: 610;
  line-height: 1;
  letter-spacing: 0;
}

.signal-cell p {
  margin: 0.58rem 0 0;
  color: var(--ink-mute);
  font-size: 0.84rem;
}

.signal-cell:nth-child(1) {
  border-top: 2px solid var(--accent);
}

.signal-cell:nth-child(2) {
  border-top: 2px solid var(--c-tokens);
}

.signal-cell:nth-child(3) {
  border-top: 2px solid var(--c-traits);
}

.signal-cell:nth-child(4) {
  border-top: 2px solid var(--c-corpus);
}

.threshold {
  padding: clamp(4rem, 8vw, 8rem) var(--page-x);
}

.panel-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin: 0 0 clamp(1.8rem, 4vw, 3.25rem);
  padding: 0 0 0.75rem;
  border-bottom: 1px solid var(--rule);
}

.panel-head .ph-title {
  flex-shrink: 0;
  color: var(--ink);
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.2;
}

.panel-head .ph-sub {
  min-width: 0;
  margin-left: auto;
  overflow: hidden;
  color: var(--ink-mute);
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.threshold-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(17rem, 0.62fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: start;
}

.threshold-lede {
  max-width: 56rem;
  margin: 0;
  color: var(--ink);
  font-size: clamp(2rem, 5.6vw, 5.6rem);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: 0;
}

.threshold-copy {
  display: grid;
  gap: 1.1rem;
  color: var(--ink-mute);
  font-size: 1rem;
}

.threshold-copy p {
  margin: 0;
  padding-top: 1.05rem;
  border-top: 1px solid var(--rule);
}

.site-footer {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--page-x);
  border-top: 1px solid var(--rule);
  color: var(--ink-mute);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.site-footer p {
  margin: 0;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-footer nav {
  display: inline-flex;
  gap: clamp(0.8rem, 2vw, 1.25rem);
  justify-content: flex-end;
  min-width: 0;
  text-align: right;
}

.site-footer a {
  transition: color 160ms ease;
  white-space: nowrap;
}

.site-footer a:hover {
  color: var(--ink);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(6px);
  animation: reveal 520ms cubic-bezier(0.22, 0.71, 0.32, 0.99) forwards;
}

@keyframes reveal {
  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 880px) {
  .site-top {
    min-height: 3rem;
  }

  .hero {
    min-height: auto;
    padding-top: 4rem;
  }

  .signal-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .threshold-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.8rem;
  }

  .site-footer nav {
    justify-content: flex-start;
    text-align: left;
  }
}

@media (max-width: 560px) {
  .site-top {
    align-items: center;
    flex-direction: row;
    gap: 0.7rem;
  }

  .hero {
    gap: 2rem;
    overflow: visible;
    padding-top: 2.75rem;
    padding-bottom: 1.25rem;
  }

  .captcha-row {
    min-height: 5.8rem;
    overflow: visible;
  }

  .subscribe-form {
    grid-template-columns: 1fr;
  }

  .subscribe-form button {
    grid-column: 1;
    grid-row: auto;
    width: 100%;
  }

  .signal-strip {
    grid-template-columns: 1fr;
  }

  .panel-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.4rem;
  }

  .panel-head .ph-sub {
    margin-left: 0;
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    animation: none;
  }
}