:root {
  color-scheme: dark;
  --bg: #08110f;
  --panel: #101b18;
  --panel-strong: #17241f;
  --text: #eef5e9;
  --muted: #a6b6a8;
  --line: rgba(238, 245, 233, 0.15);
  --accent: #9bdd58;
  --accent-strong: #f0b44c;
  --shadow: rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(8, 17, 15, 0.2), var(--bg) 58%),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

.side-nav {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 10;
  width: 214px;
  padding: 30px 20px;
  border-right: 1px solid var(--line);
  background: rgba(8, 17, 15, 0.92);
  backdrop-filter: blur(14px);
  box-shadow: 18px 0 40px var(--shadow);
}

.side-nav a {
  display: block;
  padding: 10px 8px;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
}

.side-nav a:hover,
.side-nav a[aria-current="page"] {
  color: var(--text);
  border-left-color: var(--accent);
}

.side-nav .brand {
  margin-bottom: 24px;
  padding: 0 0 18px;
  color: var(--text);
  border-bottom: 1px solid var(--line);
  border-left: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0;
}

main {
  margin-left: 214px;
}

.hero {
  position: relative;
  min-height: 78vh;
  display: grid;
  align-items: end;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8, 17, 15, 0.92), rgba(8, 17, 15, 0.35) 52%, rgba(8, 17, 15, 0.06)),
    linear-gradient(0deg, rgba(8, 17, 15, 0.92), rgba(8, 17, 15, 0.12) 55%);
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 760px;
  padding: 0 7vw 8vh;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.88rem;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(3.4rem, 9vw, 7.6rem);
  line-height: 0.9;
  letter-spacing: 0;
}

.hero-logo-heading {
  max-width: min(740px, 78vw);
  margin-bottom: 22px;
  padding: 8px 0 4px;
}

.hero-logo {
  display: block;
  width: 100%;
  height: auto;
  max-height: 190px;
  object-fit: contain;
  object-position: left center;
  filter: drop-shadow(0 18px 30px rgba(0, 0, 0, 0.45));
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  line-height: 1.1;
}

h3 {
  margin-bottom: 8px;
  color: var(--accent-strong);
  font-size: 1.05rem;
}

.hero p:last-child {
  max-width: 660px;
  margin-bottom: 0;
  color: #dbe8d9;
  font-size: clamp(1.2rem, 2vw, 1.55rem);
}

.intro,
.band,
.status,
.api-callout,
.content-page {
  padding: 72px 7vw;
}

.intro {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 44px;
  background: var(--bg);
}

.intro p,
.band p,
.status p,
.api-callout p,
.content-page p,
.content-page li {
  color: var(--muted);
}

.band {
  border-block: 1px solid var(--line);
  background: #0d1714;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-grid article,
.term-grid article {
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.term-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.term-grid article {
  min-height: 150px;
}

.status,
.api-callout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 430px);
  gap: 42px;
  align-items: start;
}

.api-callout {
  border-top: 1px solid var(--line);
  background: var(--panel-strong);
}

pre {
  margin: 0;
  overflow: auto;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #030806;
  color: var(--accent);
  box-shadow: 0 18px 38px var(--shadow);
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.button-link {
  justify-self: start;
  align-self: center;
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 10px 16px;
  border: 1px solid rgba(155, 221, 88, 0.5);
  border-radius: 8px;
  color: var(--text);
  background: rgba(155, 221, 88, 0.12);
  text-decoration: none;
  font-weight: 700;
}

.content-page {
  max-width: 980px;
}

.content-page header {
  margin-bottom: 42px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.content-page header p {
  max-width: 720px;
  font-size: 1.18rem;
}

.content-page section {
  margin-bottom: 42px;
}

.content-page ul {
  padding-left: 1.2rem;
}

.compact-list {
  columns: 2;
  gap: 32px;
}

.term-list {
  display: grid;
  grid-template-columns: minmax(150px, 0.35fr) minmax(0, 1fr);
  gap: 12px 22px;
  margin: 0;
}

.term-list dt {
  color: var(--accent-strong);
  font-weight: 800;
}

.term-list dd {
  margin: 0;
  color: var(--muted);
}

.efun-group {
  margin-top: 30px;
}

.efun-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel);
}

.efun-table th,
.efun-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.efun-table th {
  color: var(--text);
  background: var(--panel-strong);
  font-size: 0.88rem;
  text-transform: uppercase;
}

.efun-table tr:last-child td {
  border-bottom: 0;
}

.efun-table td:first-child {
  width: 42%;
}

.efun-table code {
  color: var(--accent);
  white-space: nowrap;
}

.efun-signature {
  display: inline-grid;
  gap: 2px;
  line-height: 1.35;
}

.efun-signature span {
  display: block;
}

.efun-signature span:nth-child(2) {
  color: var(--accent-strong);
  font-weight: 800;
}

@media (max-width: 880px) {
  .side-nav {
    position: sticky;
    inset: 0 0 auto;
    width: 100%;
    display: flex;
    gap: 8px;
    align-items: center;
    overflow-x: auto;
    padding: 12px 14px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .side-nav a {
    flex: 0 0 auto;
    padding: 8px 10px;
    border-left: 0;
    border-bottom: 2px solid transparent;
  }

  .side-nav a:hover,
  .side-nav a[aria-current="page"] {
    border-left-color: transparent;
    border-bottom-color: var(--accent);
  }

  .side-nav .brand {
    margin: 0 10px 0 0;
    padding: 0 12px 0 0;
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }

  main {
    margin-left: 0;
  }

  .hero {
    min-height: 70vh;
  }

  .hero-copy,
  .intro,
  .band,
  .status,
  .api-callout,
  .content-page {
    padding-inline: 24px;
  }

  .intro,
  .feature-grid,
  .term-grid,
  .status,
  .api-callout {
    grid-template-columns: 1fr;
  }

  .compact-list {
    columns: 1;
  }

  .term-list {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .term-list dd {
    margin-bottom: 16px;
  }

  .efun-table,
  .efun-table thead,
  .efun-table tbody,
  .efun-table tr,
  .efun-table th,
  .efun-table td {
    display: block;
  }

  .efun-table thead {
    display: none;
  }

  .efun-table tr {
    border-bottom: 1px solid var(--line);
  }

  .efun-table tr:last-child {
    border-bottom: 0;
  }

  .efun-table td {
    width: 100%;
    border-bottom: 0;
  }

  .efun-table td:first-child {
    width: 100%;
    padding-bottom: 4px;
  }

  .efun-table td:last-child {
    padding-top: 4px;
  }

  .efun-table code {
    white-space: normal;
    overflow-wrap: anywhere;
  }
}

@media (max-width: 560px) {
  .hero {
    min-height: 62vh;
  }

  .hero-copy {
    padding-bottom: 46px;
  }

  .intro,
  .band,
  .status,
  .api-callout,
  .content-page {
    padding-block: 48px;
  }
}