:root {
  --ink: #12161c;
  --ink-soft: #3a4452;
  --paper: #f2f4f6;
  --paper-deep: #e4e9ee;
  --panel: #ffffff;
  --signal: #0d8a78;
  --line: rgba(18, 22, 28, 0.12);
  --font-display: "Syne", sans-serif;
  --font-body: "IBM Plex Sans", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --max: 68rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

code {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

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

.trace {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 45% at 85% 8%, rgba(13, 138, 120, 0.16), transparent 55%),
    radial-gradient(ellipse 45% 35% at 8% 70%, rgba(18, 22, 28, 0.05), transparent 50%),
    linear-gradient(180deg, var(--paper) 0%, var(--paper-deep) 100%);
}

.trace::before,
.trace::after {
  content: "";
  position: absolute;
  left: -10%;
  right: -10%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--signal) 40%, transparent 75%);
  opacity: 0.3;
  animation: drift 16s linear infinite;
}

.trace::before {
  top: 22%;
  transform: rotate(-5deg);
}

.trace::after {
  top: 78%;
  opacity: 0.18;
  animation-duration: 22s;
  animation-direction: reverse;
  transform: rotate(3deg);
}

@keyframes drift {
  from {
    transform: translateX(-5%) rotate(-5deg);
  }
  to {
    transform: translateX(5%) rotate(-5deg);
  }
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.25rem clamp(1.25rem, 4vw, 2rem);
}

.top-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.35rem;
  font-size: 0.92rem;
}

.top-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  transition: color 160ms ease;
}

.top-nav a:hover {
  color: var(--signal);
}

.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 4.5rem) clamp(1.25rem, 4vw, 2rem) clamp(3rem, 8vw, 5rem);
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: center;
  min-height: calc(100vh - 4.5rem);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin: 0;
}

.pulse {
  width: 0.5em;
  height: 0.5em;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 0 rgba(13, 138, 120, 0.45);
  animation: pulse 2.4s ease-out infinite;
  flex-shrink: 0;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(13, 138, 120, 0.45);
  }
  70% {
    transform: scale(1.05);
    box-shadow: 0 0 0 14px rgba(13, 138, 120, 0);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(13, 138, 120, 0);
  }
}

.headline {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.2vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0;
  max-width: 18ch;
}

.lede {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
  max-width: 38ch;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.35rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.15rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease,
    color 160ms ease;
}

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

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}

.btn-primary:hover {
  background: var(--signal);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.btn-ghost:hover {
  border-color: var(--signal);
  color: var(--signal);
  transform: translateY(-1px);
}

.hero-visual {
  min-width: 0;
}

.console {
  background: var(--ink);
  color: #d7dde6;
  border: 1px solid rgba(18, 22, 28, 0.35);
  box-shadow: 0 24px 60px rgba(18, 22, 28, 0.18);
  animation: rise 700ms ease-out both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.console-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.console-bar span {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.console-bar em {
  margin-left: auto;
  font-style: normal;
  font-size: 0.75rem;
  color: rgba(215, 221, 230, 0.55);
  font-family: var(--font-mono);
}

.console-body {
  margin: 0;
  padding: 1.15rem 1.2rem 1.35rem;
  font-family: var(--font-mono);
  font-size: clamp(0.78rem, 1.5vw, 0.86rem);
  line-height: 1.65;
  overflow-x: auto;
  white-space: pre;
}

.tok-dim {
  color: rgba(215, 221, 230, 0.45);
}

.tok-ok {
  color: var(--signal);
}

.tok-str {
  color: #7fd4c4;
}

.tok-num {
  color: #f0d48a;
}

.band {
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.45);
}

.band-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(2.5rem, 6vw, 3.75rem) clamp(1.25rem, 4vw, 2rem);
}

.band h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  letter-spacing: -0.03em;
  margin: 0 0 0.85rem;
  max-width: 18ch;
}

.band p {
  margin: 0;
  max-width: 52ch;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 5rem) clamp(1.25rem, 4vw, 2rem);
}

.section-alt {
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.35);
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.section-alt .section-head,
.section-alt .flow,
.section-alt .principles,
.section-alt .stack-line,
.section-alt .example-asks,
.section-alt .tools {
  max-width: var(--max);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1.25rem, 4vw, 2rem);
  padding-right: clamp(1.25rem, 4vw, 2rem);
}

.example-asks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.example-asks li {
  display: grid;
  gap: 0.4rem;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.example-asks .ask {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.example-asks code {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--signal);
  word-break: break-word;
}

.section-head {
  margin-bottom: 2rem;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  letter-spacing: -0.03em;
  margin: 0 0 0.65rem;
}

.section-head p {
  margin: 0;
  color: var(--ink-soft);
  max-width: 46ch;
  font-size: 1.05rem;
}

.capability-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}

.capability-list li {
  display: grid;
  gap: 0.35rem;
  padding: 1.35rem 1.25rem 1.35rem 0;
  border-bottom: 1px solid var(--line);
}

.capability-list li:nth-child(odd) {
  padding-right: 1.75rem;
  border-right: 1px solid var(--line);
}

.capability-list li:nth-child(even) {
  padding-left: 1.75rem;
}

.capability-list strong {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.capability-list span {
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.flow li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.15rem;
  align-items: start;
}

.flow-step {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--signal);
  padding-top: 0.2rem;
}

.flow strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.flow p {
  margin: 0.35rem 0 0;
  color: var(--ink-soft);
  max-width: 52ch;
}

.tools {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.tools > div {
  display: grid;
  grid-template-columns: minmax(12rem, 0.9fr) 1.1fr;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}

.tools dt {
  margin: 0;
  font-weight: 500;
}

.tools dt code {
  color: var(--signal);
}

.tools dd {
  margin: 0;
  color: var(--ink-soft);
}

.principles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 2rem;
}

.principles li {
  color: var(--ink-soft);
}

.principles strong {
  display: block;
  color: var(--ink);
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  margin-bottom: 0.2rem;
}

.stack-line {
  margin: 2.25rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.closing {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 6rem) clamp(1.25rem, 4vw, 2rem);
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.03em;
  margin: 0 0 0.85rem;
  max-width: 18ch;
}

.closing p {
  margin: 0 0 1.5rem;
  color: var(--ink-soft);
  max-width: 42ch;
  font-size: 1.05rem;
}

.foot {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.25rem clamp(1.25rem, 4vw, 2rem) 2.5rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

.foot a {
  text-decoration: none;
}

.foot a:hover {
  color: var(--signal);
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: unset;
  }

  .capability-list,
  .principles {
    grid-template-columns: 1fr;
  }

  .capability-list li:nth-child(odd),
  .capability-list li:nth-child(even) {
    padding-right: 0;
    padding-left: 0;
    border-right: none;
  }

  .tools > div {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}

.doc {
  max-width: 46rem;
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 3.5rem) clamp(1.25rem, 4vw, 2rem) 4rem;
}

.doc-hero {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.doc-kicker {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--signal);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.doc-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
}

.doc-lede {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.1rem;
  max-width: 40ch;
}

.doc-body h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  margin: 2.25rem 0 0.75rem;
}

.doc-body p,
.doc-body li {
  color: var(--ink-soft);
}

.doc-body a {
  color: var(--signal);
  text-decoration: none;
}

.doc-body a:hover {
  text-decoration: underline;
}

.doc-body ul,
.doc-body ol {
  padding-left: 1.25rem;
}

.doc-body li + li {
  margin-top: 0.35rem;
}

.copy-block,
.prompt-box {
  position: relative;
  margin: 0.85rem 0 1.25rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  overflow: hidden;
}

.copy-block pre,
.prompt-box pre {
  margin: 0;
  padding: 1rem 1.1rem 1.1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--ink);
  white-space: pre-wrap;
  word-break: break-word;
}

.prompt-box {
  background: linear-gradient(165deg, #eef6f4 0%, var(--panel) 45%);
  border-color: rgba(13, 138, 120, 0.28);
}

.prompt-box-short pre {
  font-size: 0.9rem;
}

.copy-btn {
  position: absolute;
  top: 0.55rem;
  right: 0.55rem;
  z-index: 1;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
}

.copy-btn:hover {
  border-color: var(--signal);
  color: var(--signal);
}

.copy-btn.is-copied {
  background: var(--signal);
  border-color: var(--signal);
  color: #fff;
}

.doc-table-wrap {
  overflow-x: auto;
  margin: 0.85rem 0 1.25rem;
}

.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.doc-table th,
.doc-table td {
  text-align: left;
  vertical-align: top;
  padding: 0.65rem 0.75rem 0.65rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
}

.doc-table th {
  color: var(--ink);
  font-weight: 600;
}

.doc-tools {
  margin: 1rem 0;
}

.doc-next {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-weight: 500;
}

.top-nav a[aria-current="page"] {
  color: var(--signal);
}

@media (max-width: 640px) {
  .top-nav a:nth-child(n + 4):not(:last-child) {
    display: none;
  }
}

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

  .pulse,
  .trace::before,
  .trace::after,
  .console,
  .btn {
    animation: none;
    transition: none;
  }
}