:root {
  --paper: #e8ecf8;
  --card: #f7f8fd;
  --ink: #0b1840;
  --muted: #4a5680;
  --accent: #193be8;
  --glow: #607aff;
  --hold: #e36b2c;
  --line: rgba(11, 24, 64, 0.12);
  --display: "Syne", ui-sans-serif, system-ui, sans-serif;
  --body: "Figtree", ui-sans-serif, system-ui, sans-serif;
  --mono: "Martian Mono", ui-monospace, monospace;
  --wide: 1080px;
  --prose: 64ch;
  --nav-h: 60px;
  --radius: 16px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  max-width: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.55;
  min-height: 100dvh;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

:focus-visible {
  outline: 2px solid var(--glow);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 100;
  background: var(--card);
  color: var(--ink);
  padding: 8px 12px;
  font-weight: 600;
}

.skip:focus {
  top: 12px;
}

.wrap {
  width: 100%;
  max-width: var(--wide);
  padding-inline: 22px;
  margin-inline: auto;
  min-width: 0;
}

.wrap > *,
.hero-grid > *,
.practice,
.pacer,
.lede,
.section-head {
  min-width: 0;
  max-width: 100%;
}

/* --- nav: launch-screen blue --- */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: var(--accent);
  color: #fff;
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  overflow: hidden;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  text-decoration: none;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  min-width: 0;
}

.brand img {
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 50%;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 0;
  flex: 1 1 auto;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  color: #fff;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.72rem;
  opacity: 0.78;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  opacity: 1;
}

/* --- hero --- */

.hero {
  background: var(--accent);
  color: #fff;
  padding: 56px 0 64px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.9fr);
  gap: 48px;
  align-items: center;
}

.hero-grid > * {
  min-width: 0;
}

.kicker {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 16px;
  color: color-mix(in srgb, #fff 72%, var(--glow));
}

.hero .kicker {
  color: color-mix(in srgb, #fff 80%, var(--glow));
}

.hero h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.4rem, 7vw, 4.4rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin: 0 0 18px;
  overflow-wrap: anywhere;
  text-wrap: balance;
  max-width: 100%;
}

.lede {
  max-width: min(42ch, 100%);
  margin: 0;
  font-size: 1.12rem;
  color: color-mix(in srgb, #fff 86%, var(--glow));
  overflow-wrap: anywhere;
}

/* --- pacer --- */

.pacer {
  background: var(--card);
  color: var(--ink);
  border-radius: var(--radius);
  padding: 16px 16px 20px;
  box-shadow: 0 28px 60px rgba(8, 16, 48, 0.28);
  width: 100%;
  overflow: hidden;
}

.pacer-tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 4px;
  margin: 0 0 12px;
}

.pacer-tabs button {
  appearance: none;
  min-width: 0;
  min-height: 40px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.02em;
  cursor: pointer;
  padding: 0 2px;
}

.pacer-tabs button[aria-selected="true"] {
  background: color-mix(in srgb, var(--accent) 10%, var(--card));
  color: var(--accent);
  font-weight: 500;
}

.pacer-stage {
  position: relative;
  height: 280px;
  display: grid;
  place-items: center;
}

.pacer-svg,
.pacer-circle {
  width: 200px;
  height: 200px;
  overflow: visible;
}

[hidden] {
  display: none !important;
}

.pacer-fill {
  fill: color-mix(in srgb, var(--accent) 28%, transparent);
  stroke: var(--accent);
  stroke-width: 2;
}

.pacer-ring {
  fill: none;
  stroke: color-mix(in srgb, var(--accent) 25%, transparent);
  stroke-width: 2;
}

.pacer-circle-fill {
  fill: color-mix(in srgb, var(--accent) 28%, transparent);
  stroke: var(--accent);
  stroke-width: 2;
}

.pacer-count {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  font-family: var(--mono);
  font-weight: 500;
  font-size: 1.7rem;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
}

.pacer-count.is-hold {
  color: var(--hold);
}

.pacer-digits {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  pointer-events: none;
}

.pacer-digits .big {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(3.4rem, 8vw, 4.6rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  margin: 0;
}

.pacer-digits .sub {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  margin: 8px 0 0;
}

.pacer-label,
.pacer-meta {
  text-align: center;
  margin: 0;
}

.pacer-label {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  margin-top: 4px;
}

.pacer-meta {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  margin-top: 4px;
  min-height: 1.2em;
}

/* --- practices --- */

.practices {
  padding: 72px 0 24px;
}

.section-head {
  max-width: min(46ch, 100%);
  margin: 0 0 36px;
}

.section-head h2,
.use h2,
.table-block h2,
.traits h2,
.platforms h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 10px;
}

.section-head p,
.use-lede,
.table-lede,
.traits-lede {
  margin: 0;
  color: var(--muted);
}

.practice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.practice {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 20px;
  min-width: 0;
}

.practice h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  margin: 0 0 4px;
}

.aka {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--accent);
  margin: 0 0 12px;
}

.practice p {
  margin: 0;
  color: var(--muted);
}

.practice p + p {
  margin-top: 10px;
}

/* --- CO2 table --- */

.table-block {
  padding: 48px 0 24px;
}

.ladder {
  width: 100%;
  max-width: 22rem;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
  margin-top: 20px;
}

.ladder th,
.ladder td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}

.ladder th {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
}

.ladder td {
  font-family: var(--mono);
  font-size: 0.9rem;
}

.ladder tbody tr:last-child td {
  border-bottom: 0;
}

.ladder .round {
  color: var(--muted);
  width: 4.5rem;
}

.ladder th:last-child,
.ladder td:last-child {
  text-align: right;
}

/* --- how you use it --- */

.use {
  padding: 56px 0;
}

.use-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin-top: 28px;
}

.step {
  min-width: 0;
}

.step .n {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
}

.step h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  margin: 0 0 6px;
  letter-spacing: -0.02em;
}

.step p {
  margin: 0;
  color: var(--muted);
}

/* --- traits --- */

.traits {
  padding: 24px 0 56px;
}

.trait-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 28px;
}

.trait {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  min-width: 0;
}

.trait h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.15rem;
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.trait p {
  margin: 0;
  color: var(--muted);
}

/* --- platforms --- */

.platforms {
  padding: 0 0 80px;
}

.panel {
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius);
  padding: 32px 28px;
}

.panel h2 {
  color: #fff;
}

.panel p {
  margin: 0 0 20px;
  color: color-mix(in srgb, #fff 78%, var(--glow));
  max-width: 52ch;
}

.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pills span {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  padding: 8px 12px;
  border-radius: 999px;
  background: color-mix(in srgb, #fff 10%, transparent);
  color: #fff;
}

/* --- inner pages --- */

.page {
  padding: 48px 0 80px;
}

.page header h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  letter-spacing: -0.04em;
  margin: 0 0 8px;
}

.updated {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin: 0 0 32px;
}

.prose {
  max-width: var(--prose);
  overflow-wrap: anywhere;
}

.prose h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.45rem;
  letter-spacing: -0.02em;
  margin: 32px 0 8px;
}

.prose p,
.prose li {
  color: color-mix(in srgb, var(--ink) 88%, var(--muted));
}

.prose ul {
  padding-left: 1.2em;
}

/* --- 404 --- */

.lost {
  min-height: calc(100dvh - var(--nav-h) - 72px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 22px;
  background: var(--accent);
  color: #fff;
}

.lost h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.8rem, 8vw, 3.4rem);
  letter-spacing: -0.04em;
  margin: 0 0 12px;
  overflow-wrap: anywhere;
  max-width: min(16ch, 100%);
}

.lost p {
  color: color-mix(in srgb, #fff 82%, var(--glow));
  margin: 0 0 28px;
}

.home {
  display: inline-flex;
  align-items: center;
  color: var(--accent);
  background: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 12px 18px;
  min-height: 44px;
  border-radius: 10px;
}

.home:hover {
  color: var(--ink);
}

/* --- footer --- */

.site-foot {
  background: var(--accent);
  color: #fff;
  padding: 22px 0;
  font-size: 0.9rem;
}

.site-foot .wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.site-foot nav {
  display: flex;
  gap: 16px;
}

.site-foot a {
  color: #fff;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.72rem;
  opacity: 0.8;
}

.site-foot a:hover {
  opacity: 1;
  color: #fff;
}

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

@media (max-width: 880px) {
  .hero-grid,
  .practice-grid,
  .use-grid,
  .trait-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 36px 0 44px;
  }

  .use-grid {
    gap: 20px;
  }
}

@media (max-width: 800px) {
  .site-nav {
    height: auto;
    min-height: var(--nav-h);
  }

  .brand {
    font-size: 1rem;
  }

  .nav-links {
    flex-wrap: wrap;
  }

  .nav-links a {
    padding: 0 8px;
    font-size: 0.68rem;
  }

  .nav-links a[href="#practices"] {
    display: none;
  }
}

@media (max-width: 520px) {
  .hero h1 {
    font-size: 1.6rem;
  }

  .wrap {
    padding-inline: 16px;
  }

  .pacer-tabs button {
    font-size: 0.58rem;
  }
}