:root {
  --void: #030708;
  --ink: #0c0d0e;
  --paper: #f5f5f2;
  --white: #ffffff;
  --volt: #f4ea4b;
  --muted: rgba(255, 255, 255, 0.58);
  --ink-muted: rgba(12, 13, 14, 0.58);
  --line: rgba(255, 255, 255, 0.1);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  background: var(--void);
  color: var(--white);
  font-family: Outfit, "Segoe UI", sans-serif;
  font-weight: 400;
  font-size: 17px;
  line-height: 1.55;
  letter-spacing: 0.01em;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.wrap {
  width: min(1120px, calc(100% - 2.5rem));
  margin-inline: auto;
}

header.site {
  position: sticky;
  top: 0;
  z-index: 40;
  padding: 0.9rem 0;
  background: color-mix(in srgb, var(--void) 88%, transparent);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
}

header.site.is-scrolled { border-bottom-color: var(--line); }

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.brand .mark {
  width: 2.45rem;
  height: 2.45rem;
  border-radius: 50%;
  background: #000;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: -0.06em;
  white-space: nowrap;
}

.brand .mark .volt { color: var(--volt); }

.brand .name {
  font-weight: 500;
  letter-spacing: -0.03em;
  font-size: 1.02rem;
}

.brand .name small {
  display: block;
  font-weight: 400;
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.12rem;
}

nav.primary {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  font-size: 0.92rem;
}

nav.primary a { color: var(--muted); }
nav.primary a:hover,
nav.primary a[aria-current="page"] { color: var(--white); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1.15rem;
  border: 1px solid var(--line);
  font-weight: 500;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.btn-volt {
  background: var(--volt);
  color: var(--void);
  border-color: var(--volt);
}

.btn-volt:hover { filter: brightness(1.06); }

.btn-ghost { color: var(--white); }
.btn-ghost:hover { border-color: var(--volt); color: var(--volt); }

.btn-nav {
  background: var(--volt);
  color: var(--void);
  border-color: var(--volt);
  padding: 0.48rem 0.9rem;
}

.menu-toggle {
  display: none;
  width: 2.4rem;
  height: 2.4rem;
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  height: 1.5px;
  margin: 6px 5px;
  background: var(--white);
  transition: transform 0.3s var(--ease);
}

.hero {
  min-height: calc(100vh - 4.2rem);
  display: flex;
  align-items: center;
  padding: 3.5rem 0 4.5rem;
  background:
    radial-gradient(800px 400px at 80% 10%, rgba(244, 234, 75, 0.08), transparent 60%),
    var(--void);
}

.hero .code {
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: clamp(0.82rem, 2.4vw, 1.12rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
  margin: 0 0 2.2rem;
  overflow-x: auto;
}

.hero .code .kw { color: rgba(255, 255, 255, 0.72); }
.hero .code .id { color: var(--volt); }

.hero h1 {
  font-size: clamp(2.6rem, 8vw, 5.4rem);
  font-weight: 500;
  letter-spacing: -0.05em;
  line-height: 0.92;
  margin: 0 0 0.85rem;
}

.hero .lede {
  max-width: 34rem;
  font-weight: 300;
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  color: var(--muted);
  margin: 0 0 1.8rem;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.section {
  padding: 4.6rem 0;
}

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

.kicker {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.8rem;
}

.section.paper .kicker { color: var(--ink-muted); }

h2 {
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin: 0 0 0.85rem;
}

.intro {
  max-width: 38rem;
  font-weight: 300;
  color: var(--muted);
  margin: 0 0 2rem;
}

.section.paper .intro { color: var(--ink-muted); }

.section.paper .btn {
  border-color: rgba(12, 13, 14, 0.18);
  color: var(--ink);
}

.section.paper .btn-volt {
  border-color: var(--volt);
  color: var(--void);
}

.pillars {
  padding: 0 0 4.2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.1rem;
}

.pillars article {
  padding: 1.4rem 1.15rem 1.3rem;
  border-top: 2px solid var(--volt);
  background: #0a0c0d;
}

.pillars .n {
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.72rem;
  color: var(--volt);
  letter-spacing: 0.12em;
}

.pillars h3,
.cards h3,
.work h3,
.about-points h3,
.steps h3 {
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  margin: 0.45rem 0 0.4rem;
}

.pillars p,
.cards p,
.work p,
.about-points p,
.steps p {
  margin: 0;
  font-weight: 300;
  font-size: 0.92rem;
  color: var(--muted);
}

.section.paper .cards p,
.section.paper .about-points p {
  color: var(--ink-muted);
}

.about-points {
  display: grid;
  gap: 1.1rem;
}

.about-points > div {
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(12, 13, 14, 0.1);
}

.steps {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.steps li {
  padding: 1.3rem 1.1rem;
  border: 1px solid var(--line);
}

.steps span {
  font-family: "IBM Plex Mono", Consolas, monospace;
  color: var(--volt);
  font-size: 0.78rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
}

.cards article,
.work article {
  padding: 1.35rem 1.25rem 1.3rem;
  background: var(--white);
  border: 1px solid rgba(12, 13, 14, 0.08);
  min-height: 10rem;
}

.work {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
}

.work article {
  background: #0a0c0d;
  border-color: var(--line);
  min-height: 8.5rem;
}

.cards .tag {
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--ink-muted);
}

.why {
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.why li {
  padding: 1.1rem 1.2rem;
  background: var(--white);
  border-left: 3px solid var(--volt);
  font-weight: 300;
  color: var(--ink-muted);
}

.why strong {
  display: block;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 0.2rem;
}

.contact-split { align-items: start; }

.form {
  display: grid;
  gap: 0.45rem;
}

.form label {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 0.5rem;
}

.form input,
.form textarea {
  width: 100%;
  background: #0a0c0d;
  border: 1px solid var(--line);
  color: var(--white);
  font: inherit;
  padding: 0.7rem 0.8rem;
}

.form textarea { min-height: 7.5rem; resize: vertical; }

.form .btn { margin-top: 0.9rem; justify-self: start; }

.form-status {
  margin: 0.4rem 0 0;
  font-size: 0.9rem;
  color: var(--volt);
  min-height: 1.2em;
}

.hp {
  position: absolute;
  left: -9999px;
  height: 0;
  overflow: hidden;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
}

.contact-mail {
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: clamp(1.15rem, 3vw, 1.7rem);
  color: var(--volt);
  letter-spacing: -0.03em;
}

.contact-mail:hover { text-decoration: underline; }

footer.site {
  padding: 1.4rem 0 1.8rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

footer.site .wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

footer.site a:hover { color: var(--volt); }

[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

[data-reveal].is-in {
  opacity: 1;
  transform: none;
}

@media (max-width: 1100px) {
  .grid-4, .steps, .cards, .work { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .menu-toggle { display: block; }
  nav.primary {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--void);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1.25rem 1.3rem;
    gap: 0.9rem;
  }
  nav.primary.is-open { display: flex; }
  header.site .wrap { position: relative; }
  .split, .grid-4, .steps, .cards, .work { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding: 2.4rem 0 3.2rem; }
}