:root {
  --bg: oklch(14% 0.03 230);
  --bg-soft: oklch(20% 0.04 235);
  --surface: color-mix(in oklab, oklch(24% 0.04 240), black 14%);
  --surface-border: color-mix(in oklab, oklch(76% 0.06 160), transparent 78%);
  --text: oklch(94% 0.01 250);
  --muted: color-mix(in oklab, var(--text), var(--bg) 42%);
  --brand: oklch(80% 0.18 160);
  --brand-deep: oklch(66% 0.16 170);
  --danger: oklch(76% 0.18 32);

  --radius-s: 0.75rem;
  --radius-m: 1rem;
  --radius-l: 1.5rem;

  --shadow: 0 20px 70px rgb(0 0 0 / 0.35);
  --max-width: 72rem;

  --space-1: clamp(0.6rem, 0.4rem + 0.4vw, 0.85rem);
  --space-2: clamp(0.95rem, 0.6rem + 0.7vw, 1.35rem);
  --space-3: clamp(1.3rem, 1rem + 1vw, 2rem);
  --space-4: clamp(2rem, 1.6rem + 1.8vw, 3.4rem);
  --space-5: clamp(3rem, 2.3rem + 2.6vw, 5.2rem);

  --step--1: clamp(0.84rem, 0.77rem + 0.26vw, 0.98rem);
  --step-0: clamp(1rem, 0.93rem + 0.38vw, 1.2rem);
  --step-1: clamp(1.22rem, 1.06rem + 0.76vw, 1.62rem);
  --step-2: clamp(1.5rem, 1.24rem + 1.16vw, 2.1rem);
  --step-3: clamp(1.95rem, 1.52rem + 1.9vw, 2.95rem);
  --step-4: clamp(2.55rem, 1.92rem + 2.8vw, 4rem);
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: "Avenir Next", "Segoe UI", "Noto Sans", sans-serif;
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--text);
  background: radial-gradient(circle at 12% 8%, rgb(69 174 148 / 0.2), transparent 30%),
    radial-gradient(circle at 82% 14%, rgb(34 130 110 / 0.2), transparent 26%),
    linear-gradient(165deg, var(--bg) 0%, var(--bg-soft) 100%);
}

h1,
h2,
h3,
.brand {
  font-family: "Gill Sans", "Avenir Next Condensed", "Trebuchet MS", sans-serif;
  line-height: 1.15;
  text-wrap: balance;
}

p,
li {
  text-wrap: pretty;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 1000;
  padding: 0.7rem 1rem;
  border-radius: 0 0 var(--radius-s) 0;
  color: black;
  background: var(--brand);
}

.skip-link:focus-visible {
  left: 0;
}

.background {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
}

.glow-a {
  width: 36rem;
  aspect-ratio: 1;
  background: rgb(87 222 182 / 0.16);
  left: -8rem;
  top: 30vh;
}

.glow-b {
  width: 30rem;
  aspect-ratio: 1;
  background: rgb(15 118 110 / 0.24);
  right: -7rem;
  top: 55vh;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: 0.08;
  background-image: radial-gradient(rgb(255 255 255 / 0.65) 0.8px, transparent 0.8px);
  background-size: 3px 3px;
}

.wrap {
  width: min(var(--max-width), 100% - 2.2rem);
  margin-inline: auto;
}

main > section[id] {
  scroll-margin-top: 6.5rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding-block: 0.95rem;
}

.brand {
  margin: 0;
  font-size: var(--step-1);
  letter-spacing: 0.08em;
  font-weight: 700;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  display: inline-block;
  padding: 0.42rem 0.7rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: var(--step--1);
  font-weight: 600;
  text-decoration: none;
  transition: color 140ms ease, background-color 140ms ease;
}

.nav-list a:is(:hover, :focus-visible) {
  color: var(--text);
  background: color-mix(in oklab, var(--surface), transparent 20%);
}

.nav-list a.is-active {
  color: var(--bg);
  background: var(--brand);
}

.page {
  padding-block: var(--space-4) var(--space-5);
  display: grid;
  gap: var(--space-3);
}

.hero {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4);
  border-radius: var(--radius-l);
  border: 1px solid var(--surface-border);
  background:
    linear-gradient(130deg, rgb(80 206 171 / 0.2), transparent 45%),
    color-mix(in oklab, var(--surface), transparent 16%);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0;
  color: var(--brand);
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hero-title-row {
  display: flex;
  align-items: center;
  gap: clamp(0.8rem, 0.5rem + 1vw, 1.4rem);
}

.hero-title-block {
  display: grid;
  align-content: center;
  gap: 0.15rem;
}

.hero-logo {
  width: clamp(3.6rem, 3rem + 2vw, 5.4rem);
  height: auto;
  border-radius: 0.7rem;
  border: 1px solid color-mix(in oklab, var(--brand), transparent 58%);
  background: white;
  padding: 0.35rem;
  box-shadow: 0 10px 24px rgb(0 0 0 / 0.3);
}

h1 {
  margin: 0;
  max-width: 18ch;
  font-size: var(--step-4);
}

.hero-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: var(--step--1);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lead {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: var(--step-1);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.tag-row span {
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--brand), transparent 64%);
  color: color-mix(in oklab, var(--text), var(--brand) 20%);
  background: color-mix(in oklab, var(--surface), transparent 12%);
  font-size: var(--step--1);
  font-weight: 600;
}

.panel {
  padding: var(--space-3);
  border-radius: var(--radius-m);
  border: 1px solid var(--surface-border);
  background: color-mix(in oklab, var(--surface), transparent 6%);
  box-shadow: 0 14px 42px rgb(0 0 0 / 0.24);
}

h2 {
  margin-top: 0;
  margin-bottom: var(--space-2);
  font-size: var(--step-2);
}

.panel p:last-child {
  margin-bottom: 0;
}

.impact-list {
  display: grid;
  gap: var(--space-2);
  grid-template-columns: repeat(auto-fit, minmax(min(17rem, 100%), 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
}

.impact-list li {
  padding: var(--space-2);
  border-radius: var(--radius-s);
  background: color-mix(in oklab, var(--bg-soft), transparent 16%);
  border: 1px solid color-mix(in oklab, var(--text), transparent 88%);
}

.impact-list h3,
.example-card h3 {
  margin-top: 0;
  margin-bottom: 0.45rem;
  font-size: var(--step-1);
}

.example-grid {
  display: grid;
  gap: var(--space-2);
  grid-template-columns: repeat(auto-fit, minmax(min(18rem, 100%), 1fr));
}

.idea-grid {
  display: grid;
  gap: var(--space-2);
  grid-template-columns: repeat(auto-fit, minmax(min(19rem, 100%), 1fr));
}

.example-card {
  display: grid;
  align-content: start;
  gap: 0.7rem;
  padding: var(--space-2);
  border-radius: var(--radius-s);
  background: linear-gradient(
      170deg,
      color-mix(in oklab, var(--surface), transparent 10%) 0%,
      color-mix(in oklab, var(--bg-soft), transparent 16%) 100%
    );
  border: 1px solid color-mix(in oklab, var(--brand), transparent 82%);
}

.idea-card {
  display: grid;
  align-content: start;
  gap: 0.7rem;
  padding: var(--space-2);
  border-radius: var(--radius-s);
  border: 1px solid color-mix(in oklab, var(--brand), transparent 78%);
  background: linear-gradient(
    165deg,
    color-mix(in oklab, var(--surface), transparent 6%) 0%,
    color-mix(in oklab, var(--bg-soft), transparent 18%) 100%
  );
}

.idea-card p {
  margin: 0;
}

.toggle {
  justify-self: start;
  margin-top: 0.2rem;
  border: 1px solid color-mix(in oklab, var(--brand), transparent 40%);
  border-radius: 999px;
  background: transparent;
  color: color-mix(in oklab, var(--text), var(--brand) 34%);
  font: inherit;
  font-size: var(--step--1);
  font-weight: 700;
  padding: 0.36rem 0.7rem;
  cursor: pointer;
  transition: transform 120ms ease, background-color 120ms ease;
}

.toggle:is(:hover, :focus-visible) {
  background: color-mix(in oklab, var(--brand), transparent 84%);
}

.toggle:active {
  transform: scale(0.98);
}

.details {
  margin-top: 0.1rem;
  color: var(--muted);
}

ol {
  padding-left: 1.15rem;
  margin: 0;
  display: grid;
  gap: 0.6rem;
}

.closing {
  padding: var(--space-4) var(--space-3);
  border-radius: var(--radius-l);
  border: 1px solid color-mix(in oklab, var(--danger), transparent 75%);
  background:
    linear-gradient(145deg, color-mix(in oklab, var(--danger), transparent 90%), transparent),
    color-mix(in oklab, var(--surface), transparent 10%);
}

.closing h2 {
  margin-block: 0 0.6rem;
}

.closing p {
  margin-block: 0;
  max-width: 56ch;
}

.site-footer {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-m);
  border: 1px solid color-mix(in oklab, var(--text), transparent 86%);
  background: color-mix(in oklab, var(--surface), transparent 8%);
}

.site-footer p {
  margin: 0;
  color: var(--muted);
  font-size: var(--step--1);
}

.site-footer p + p {
  margin-top: 0.4rem;
}

.site-footer a {
  color: color-mix(in oklab, var(--text), var(--brand) 30%);
}

.site-footer a:is(:hover, :focus-visible) {
  color: var(--brand);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 420ms ease, transform 420ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 50rem) {
  .site-header {
    position: static;
  }

  .nav-wrap {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    padding: var(--space-3);
  }

  .hero-title-row {
    align-items: flex-start;
  }
}

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

  .reveal,
  .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .toggle {
    transition: none;
  }
}