:root {
  color-scheme: dark;
  --bg: #0a1018;
  --panel: #141e2b;
  --text: #f4f6fc;
  --muted: #a9bbcf;
  --mint: #75f2cd;
  --amber: #ffc082;
  --violet: #b9a7ff;
  font:
    16px/1.65 system-ui,
    -apple-system,
    sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 30px;
}
body {
  margin: 0;
  background:
    radial-gradient(ellipse 650px 650px at 90% 280px, #15362e66, transparent),
    var(--bg);
  color: var(--text);
}
a {
  color: inherit;
  text-underline-offset: 5px;
}
button {
  font: inherit;
}
img {
  max-width: 100%;
  height: auto;
}
.wrap {
  width: min(1160px, calc(100% - 48px));
  margin-inline: auto;
}
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-block: 28px;
  border-bottom: 1px solid #2a3b4c;
}
.brand {
  display: flex;
  gap: 13px;
  align-items: center;
  text-decoration: none;
  font-size: 13px;
  line-height: 1.3;
}
.brand strong {
  font-size: 17px;
}
nav {
  display: flex;
  gap: 26px;
  font-size: 14px;
}
nav a {
  text-decoration: none;
  color: var(--muted);
}
nav a:hover {
  color: var(--mint);
}
.hero {
  padding-top: 68px;
  text-align: left;
}
.hero-heading {
  display: grid;
  grid-template-columns: 1fr 290px;
  align-items: center;
  gap: 50px;
}
.hero-emblem {
  text-align: center;
  position: relative;
  padding: 22px 0;
}
.hero-emblem::before {
  content: '';
  position: absolute;
  inset: -35px;
  border: 1px solid #75f2cd22;
  border-radius: 60px;
  transform: rotate(-9deg);
  z-index: -1;
  background: linear-gradient(145deg, #75f2cd08, #b9a7ff08);
}
.hero-emblem img {
  width: 230px;
  filter: drop-shadow(0 22px 25px #0008);
}
.stage-labels {
  display: flex;
  justify-content: center;
  gap: 17px;
  margin-top: 32px;
  font:
    600 10px/1.5 ui-monospace,
    monospace;
  letter-spacing: 0.1em;
}
.stage-labels span:nth-child(1) {
  color: var(--mint);
}
.stage-labels span:nth-child(2) {
  color: var(--amber);
}
.stage-labels span:nth-child(3) {
  color: var(--violet);
}
.eyebrow {
  color: var(--mint);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.15em;
}
.eyebrow span {
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--mint);
  border-radius: 50%;
  margin-right: 8px;
}
h1 {
  font-size: clamp(44px, 5.8vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.055em;
  margin: 25px 0;
}
h1 em {
  font-style: normal;
  color: var(--mint);
}
.lead {
  max-width: 650px;
  margin: 24px 0;
  color: var(--muted);
  font-size: 20px;
}
.button {
  display: inline-flex;
  gap: 24px;
  align-items: center;
  background: var(--mint);
  color: #10201d;
  font-weight: 700;
  padding: 14px 22px;
  border-radius: 8px;
  text-decoration: none;
  margin-top: 12px;
  box-shadow:
    inset 0 1px 0 #ffffff66,
    0 8px 26px #75f2cd14;
}
.requirement {
  font-size: 12px;
  color: var(--muted);
}
.deck {
  margin: 65px 0 0;
}
figcaption {
  font-size: 12px;
  color: var(--muted);
  margin-top: 10px;
  text-align: center;
}
section {
  margin-bottom: 110px;
}
.section-heading {
  margin-bottom: 35px;
}
h2 {
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.14;
  letter-spacing: -0.035em;
  margin: 12px 0 20px;
}
.section-heading > p:last-child {
  color: var(--muted);
  max-width: 760px;
}
.areas {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.area {
  padding: 24px;
  border: 1px solid #334055;
  border-radius: 20px;
  background: linear-gradient(145deg, #1b2a3a, var(--panel) 70%);
  position: relative;
  overflow: hidden;
}
.area::before {
  content: '';
  position: absolute;
  top: 0;
  left: 24px;
  width: 64px;
  height: 3px;
  background: var(--mint);
}
.area.amber::before {
  background: var(--amber);
}
.area.violet::before {
  background: var(--violet);
}
.area-number {
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.08em;
}
.mint .area-number {
  color: var(--mint);
}
.amber .area-number {
  color: var(--amber);
}
.violet .area-number {
  color: var(--violet);
}
h3 {
  font-size: 20px;
  line-height: 1.35;
}
.action {
  margin-top: 30px;
}
.action img {
  display: block;
  border-radius: 16px;
  box-shadow: 0 8px 18px #0005;
}
h4 {
  font-size: 16px;
  margin: 15px 0 8px;
}
.action p {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}
.action-guide {
  margin: 16px 0 0;
  font-size: 14px;
}
.action-guide dt {
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
  margin-top: 12px;
}
.action-guide dd {
  margin: 4px 0 0;
  color: var(--muted);
}
.action p.action-note {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid #334055;
  font-size: 12px;
}
.action > div {
  min-width: 0;
}
.usage-notes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  margin-top: 40px;
}
.usage-notes article {
  padding: 24px;
  border: 1px solid #334055;
  border-radius: 16px;
  background: var(--panel);
}
.usage-notes h3 {
  margin: 0 0 14px;
}
.usage-notes p {
  color: var(--muted);
  font-size: 14px;
}
.usage-notes p:last-child {
  margin-bottom: 0;
}
.demo-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 90px;
  align-items: center;
  border-block: 1px solid #334055;
  padding-block: 65px;
}
.demo-section p:not(.eyebrow) {
  color: var(--muted);
}
.demo {
  text-align: center;
}
.demo > img {
  width: 180px;
}
.demo-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 22px;
}
button {
  background: var(--panel);
  color: var(--muted);
  border: 1px solid #53637a;
  padding: 8px 13px;
  border-radius: 6px;
  cursor: pointer;
}
button[aria-pressed='true'] {
  color: var(--mint);
  border-color: var(--mint);
}
.setup ol {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.setup li > span {
  color: var(--mint);
  font-size: 30px;
  font-weight: 700;
}
.setup li p {
  color: var(--muted);
  font-size: 14px;
}
code {
  font-size: 0.95em;
  overflow-wrap: anywhere;
}
.note {
  border-left: 2px solid var(--amber);
  padding-left: 20px;
  color: var(--muted);
  font-size: 14px;
  margin-top: 35px;
}
.privacy {
  padding: 44px;
  background: var(--panel);
  border-radius: 16px;
  border: 1px solid #34495d;
}
.privacy p:not(.eyebrow) {
  color: var(--muted);
  max-width: 850px;
}
footer {
  border-top: 1px solid #334055;
  padding-block: 30px;
  color: var(--muted);
  font-size: 12px;
}
footer p:last-child {
  max-width: 740px;
}
:focus-visible {
  outline: 3px solid var(--mint);
  outline-offset: 5px;
}
.skip {
  position: absolute;
  left: 16px;
  top: -80px;
  padding: 10px;
  background: var(--mint);
  color: var(--bg);
  z-index: 1;
}
.skip:focus {
  top: 10px;
}
@media (max-width: 850px) {
  .hero-heading {
    grid-template-columns: 1fr 180px;
    gap: 24px;
  }
  .hero-emblem img {
    width: 160px;
  }
  .hero-emblem::before {
    inset: 0;
    border-radius: 32px;
    transform: rotate(-6deg);
  }
  .stage-labels {
    flex-wrap: wrap;
    gap: 8px 12px;
  }
  .areas,
  .setup ol,
  .usage-notes {
    grid-template-columns: 1fr;
  }
  .area {
    padding: 28px;
  }
  .action {
    display: flex;
    gap: 22px;
    align-items: flex-start;
  }
  .action img {
    width: 80px;
    flex-shrink: 0;
  }
  h4 {
    margin-top: 0;
  }
  .demo-section {
    gap: 40px;
  }
  .hero {
    padding-top: 48px;
  }
}
@media (max-width: 520px) {
  .hero-heading {
    display: flex;
    flex-direction: column-reverse;
    align-items: flex-start;
    gap: 22px;
  }
  .hero-emblem {
    padding: 0;
    display: flex;
    align-items: center;
    gap: 24px;
  }
  .hero-emblem img {
    width: 76px;
  }
  .hero-emblem::before {
    display: none;
  }
  .stage-labels {
    flex-direction: column;
    align-items: flex-start;
    margin: 0;
  }
  .wrap {
    width: calc(100% - 32px);
  }
  .site-header {
    align-items: flex-start;
    gap: 20px;
  }
  nav {
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
    font-size: 12px;
  }
  .brand {
    flex-shrink: 0;
  }
  .brand img {
    width: 32px;
  }
  .brand strong {
    font-size: 14px;
  }
  .lead {
    font-size: 17px;
  }
  section {
    margin-bottom: 70px;
  }
  .hero {
    padding-top: 35px;
  }
  .deck {
    margin-top: 35px;
  }
  .demo-section {
    grid-template-columns: 1fr;
  }
  .privacy {
    padding: 25px;
  }
  .area {
    padding: 22px;
  }
  .action {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 12px;
  }
  .action > div {
    display: contents;
  }
  .action img {
    width: 72px;
  }
  .action h4 {
    align-self: center;
    margin: 0;
  }
  .action p,
  .action-guide {
    grid-column: 1 / -1;
  }
  .action-guide,
  .action p.action-note {
    margin-top: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}