:root {
  --ink: #1b192e;
  --ink-soft: #37335b;
  --paper: #eae5eb;
  --green: #13be89;
  --cyan: #12b1bf;
  --magenta: #d40aa8;
  --card-bg: rgba(27, 25, 46, 0.76);
  --card-stroke: rgba(234, 229, 235, 0.18);
  --muted: rgba(234, 229, 235, 0.8);
}

* {
  box-sizing: border-box;
}

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

body {
  min-height: 100vh;
  color: var(--paper);
  background: radial-gradient(circle at 15% 20%, #f7be77 0%, rgba(247, 190, 119, 0.12) 25%, transparent 48%),
    radial-gradient(circle at 80% 12%, #ff7b3a 0%, rgba(255, 123, 58, 0.15) 20%, transparent 42%),
    radial-gradient(circle at 50% 80%, #74008d 0%, rgba(116, 0, 141, 0.2) 26%, transparent 58%),
    var(--ink);
  font-family: "Gill Sans MT", "Gill Sans", "Avenir Next", "Trebuchet MS", sans-serif;
  line-height: 1.5;
}

.bg-layer {
  position: fixed;
  inset: 0;
  background:
    linear-gradient(130deg, rgba(27, 25, 46, 0.6), rgba(27, 25, 46, 0.85)),
    url("assets/network-bg.jpg") center 20% / cover no-repeat;
  opacity: 0.55;
  z-index: -1;
}

.site-header,
main {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  padding: 1.4rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.brand {
  font-family: "Walbaum Display", "Didot", "Bodoni MT", "Palatino Linotype", Palatino, "Book Antiqua", serif;
  font-size: clamp(1.45rem, 2vw, 1.8rem);
  letter-spacing: 0.03em;
}

nav {
  display: flex;
  gap: 1rem;
}

nav a {
  color: var(--paper);
  text-decoration: none;
  font-size: 0.95rem;
  border-bottom: 1px solid transparent;
  padding-bottom: 0.15rem;
}

nav a:hover {
  border-bottom-color: rgba(234, 229, 235, 0.7);
}

main {
  padding: 1.2rem 0 4rem;
  display: grid;
  gap: 1.35rem;
}

.hero {
  padding: clamp(1.6rem, 4vw, 3rem);
  border: 1px solid var(--card-stroke);
  background: linear-gradient(150deg, rgba(27, 25, 46, 0.82), rgba(55, 51, 91, 0.58));
  backdrop-filter: blur(1px);
  border-radius: 1.25rem;
  animation: rise 0.65s ease-out;
}

.overline {
  margin: 0 0 0.8rem;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.15;
  font-family: "Walbaum Display", "Didot", "Bodoni MT", "Palatino Linotype", Palatino, "Book Antiqua", serif;
}

h1 {
  font-size: clamp(2rem, 6vw, 4rem);
}

h2 {
  font-size: clamp(1.35rem, 3vw, 2rem);
}

h3 {
  font-size: 1.18rem;
}

.lead {
  margin: 1rem 0 1.4rem;
  max-width: 65ch;
}

.btn {
  display: inline-block;
  text-decoration: none;
  color: var(--ink);
  background: var(--paper);
  padding: 0.62rem 1.05rem;
  border-radius: 999px;
  font-weight: 700;
}

.btn:hover {
  background: #ffffff;
}

.panel,
.card {
  border: 1px solid var(--card-stroke);
  border-radius: 1.05rem;
  background: var(--card-bg);
}

.panel {
  padding: clamp(1.1rem, 2.5vw, 1.6rem);
}

.panel p,
.card p {
  margin: 0.65rem 0 0;
}

.grid {
  display: grid;
  gap: 1rem;
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  padding: 1rem;
}

.accent {
  position: relative;
  overflow: hidden;
}

.accent::before {
  content: "";
  position: absolute;
  left: -20%;
  top: -45%;
  width: 72%;
  aspect-ratio: 1;
  border-radius: 50%;
  opacity: 0.16;
}

.accent-green::before {
  background: var(--green);
}

.accent-cyan::before {
  background: var(--cyan);
}

.accent-magenta::before {
  background: var(--magenta);
}

.chips {
  margin: 0.8rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.chips span {
  border: 1px solid var(--card-stroke);
  border-radius: 999px;
  padding: 0.38rem 0.7rem;
  background: rgba(234, 229, 235, 0.08);
}

.split {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 1rem;
}

.team-grid {
  margin-top: 1rem;
}

.demo {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1rem;
  align-items: start;
}

.demo-copy .overline {
  margin-bottom: 0.55rem;
}

.demo-points {
  margin-top: 0.85rem;
}

.demo-form {
  display: grid;
  gap: 0.75rem;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field span {
  font-size: 0.9rem;
  color: var(--muted);
}

input,
textarea {
  width: 100%;
  border: 1px solid rgba(234, 229, 235, 0.3);
  border-radius: 0.75rem;
  padding: 0.65rem 0.75rem;
  font: inherit;
  color: var(--paper);
  background: rgba(234, 229, 235, 0.08);
}

input::placeholder,
textarea::placeholder {
  color: rgba(234, 229, 235, 0.55);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: rgba(18, 177, 191, 0.9);
  box-shadow: 0 0 0 3px rgba(18, 177, 191, 0.18);
}

.btn.btn-primary {
  border: none;
  cursor: pointer;
  justify-self: start;
  background: linear-gradient(120deg, var(--paper), #ffffff);
}

ul {
  margin: 0;
  padding-left: 1.1rem;
}

li + li {
  margin-top: 0.55rem;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .grid.three,
  .split,
  .demo {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  nav {
    flex-wrap: wrap;
    gap: 0.8rem;
  }

  main {
    padding-bottom: 2rem;
  }
}