:root {
  --ink:        #0c1116;
  --ink-soft:   #1a232d;
  --paper:      #f6f5f1;
  --paper-2:    #efede7;
  --muted:      #5d6b78;
  --muted-2:    #8a96a1;
  --line:       rgba(12, 17, 22, 0.10);
  --line-soft:  rgba(12, 17, 22, 0.06);
  --signal:     #16a394;
  --signal-2:   #4fd1c5;
  --max:        1120px;
  --pad:        clamp(1.25rem, 5vw, 3rem);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 {
  font-family: "Newsreader", Georgia, serif;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.08;
  margin: 0;
}

em { font-style: italic; }

a { color: inherit; text-decoration: none; }

.eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal);
  margin: 0 0 1.1rem;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem var(--pad);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line-soft);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: "Newsreader", serif;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.wordmark__mark { color: var(--signal); display: block; }
.wordmark--sm { font-size: 1.15rem; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
  font-size: 0.92rem;
}
.nav__links a { color: var(--muted); transition: color 0.18s ease; }
.nav__links a:hover { color: var(--ink); }
.nav__cta {
  color: var(--ink) !important;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.5rem 1.1rem;
}
.nav__cta:hover { background: var(--ink); color: var(--paper) !important; border-color: var(--ink); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  transition: transform 0.15s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.btn--primary { background: var(--ink); color: var(--paper); }
.btn--primary:hover { background: var(--ink-soft); transform: translateY(-1px); }
.btn--ghost { color: var(--ink); border: 1px solid var(--line); }
.btn--ghost:hover { border-color: var(--ink); transform: translateY(-1px); }
.btn--lg { padding: 1rem 2rem; font-size: 1.05rem; letter-spacing: 0.01em; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: clamp(4rem, 12vh, 9rem) var(--pad) 0;
  overflow: hidden;
}
.hero__inner {
  max-width: var(--max);
  margin: 0 auto;
  position: relative;
  z-index: 2;
}
.hero__title {
  font-size: clamp(2.8rem, 8vw, 5.4rem);
  max-width: 16ch;
}
.hero__title em { color: var(--ink); }
.hero__lede {
  max-width: 46ch;
  margin: 1.8rem 0 0;
  font-size: 1.18rem;
  color: var(--muted);
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2.4rem;
}

/* signal trace */
.trace {
  position: relative;
  max-width: var(--max);
  margin: clamp(3rem, 8vh, 5.5rem) auto 0;
  padding: 0 var(--pad);
  height: clamp(120px, 22vh, 200px);
}
.trace__svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}
.trace__path {
  fill: none;
  stroke: var(--signal);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.55;
  stroke-dasharray: 4200;
  stroke-dashoffset: 4200;
  animation: draw 4.5s cubic-bezier(0.4, 0, 0.1, 1) 0.3s forwards;
}
@keyframes draw { to { stroke-dashoffset: 0; } }

/* ---------- Sections ---------- */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(4.5rem, 11vh, 8rem) var(--pad);
}
.section--alt {
  max-width: none;
  background: var(--paper-2);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.section--alt > * { max-width: var(--max); margin-inline: auto; }
.section__head { max-width: 30ch; margin-bottom: 3.2rem; }
.section__title { font-size: clamp(1.9rem, 4.5vw, 3rem); }

/* cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}
.card {
  background: var(--paper);
  padding: 2.2rem 2rem;
}
.card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.7rem;
}
.card p { margin: 0; color: var(--muted); font-size: 0.98rem; }

/* steps */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2.5rem 2rem;
  counter-reset: step;
}
.step { position: relative; padding-top: 1.5rem; border-top: 1px solid var(--line); }
.step__num {
  display: block;
  font-family: "Newsreader", serif;
  font-size: 1rem;
  color: var(--signal);
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}
.step h3 { font-size: 1.5rem; margin-bottom: 0.6rem; }
.step p { margin: 0; color: var(--muted); }

/* about */
.about { display: grid; grid-template-columns: 1fr 1.2fr; gap: 3rem; align-items: start; }
.about .section__head { margin-bottom: 0; }
.about__body { display: grid; gap: 1.3rem; }
.about__body p { margin: 0; font-size: 1.12rem; color: var(--ink-soft); }

/* contact */
.section--contact {
  text-align: center;
  padding-block: clamp(5rem, 13vh, 9rem);
}
.contact { max-width: 38ch; margin: 0 auto; }
.contact__title { font-size: clamp(2rem, 5vw, 3.2rem); margin-bottom: 1.2rem; }
.contact__lede { color: var(--muted); margin: 0 auto 2.4rem; font-size: 1.1rem; }

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line-soft);
  background: var(--paper-2);
}
.footer__inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer__meta, .footer__copy {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted-2);
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
  .nav__links { gap: 1.1rem; font-size: 0.85rem; }
  .nav__links a:not(.nav__cta) { display: none; }
  .about { grid-template-columns: 1fr; gap: 2rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .trace__path { animation: none; stroke-dashoffset: 0; }
  .btn:hover { transform: none; }
}