:root {
  color-scheme: light;
  --paper: #f3f1fa;
  --ink: #16113a;
  --violet: #3421c9;
  --pink: #ff4f8b;
  --pink-soft: #ff7aa6;
  --line: #d8d3ee;
  --muted: #54507a;
  --on-violet: #f6f3ff;
  --on-violet-muted: #cfc9ff;
  --font: "Avenir Next", "Segoe UI Variable Display", "Segoe UI", "Helvetica Neue", Roboto, system-ui, -apple-system, "Noto Sans", Arial, sans-serif;
  --page: 68rem;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
}

svg { display: block; max-width: 100%; }

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

:focus-visible {
  outline: 3px solid var(--pink);
  outline-offset: 3px;
  border-radius: 2px;
}

.wrap {
  width: min(100% - 2 * var(--gutter), var(--page));
  margin-inline: auto;
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 10;
  padding: 0.6rem 1rem;
  background: var(--ink);
  color: var(--paper);
}
.skip:focus { top: 1rem; }

/* Header */
.site-header {
  background: var(--violet);
  color: var(--on-violet);
}
.site-header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.1rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  text-decoration: none;
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
}
.nav a { text-decoration: none; padding-block: 0.25rem; }
.nav a:hover { text-decoration: underline; }

/* Hero */
.hero {
  background: var(--violet);
  color: var(--on-violet);
  overflow: hidden;
}
.hero__inner {
  padding-block: clamp(2.5rem, 8vw, 5.5rem) 0;
}
.hero h1 {
  margin: 0 0 1.25rem;
  max-width: 18ch;
  font-size: clamp(2.3rem, 7vw, 4.9rem);
  line-height: 1.03;
  letter-spacing: -0.035em;
  font-weight: 800;
  text-wrap: balance;
}
.hero__lead {
  margin: 0 0 2rem;
  max-width: 34rem;
  font-size: clamp(1.08rem, 2.1vw, 1.3rem);
  color: var(--on-violet-muted);
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.7rem 1.5rem;
  border: 2px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}
.btn--primary { background: var(--pink); color: var(--ink); }
.btn--primary:hover { background: var(--pink-soft); }
.btn--ghost { border-color: currentColor; }
.btn--ghost:hover { background: rgba(246, 243, 255, 0.12); }
.btn--dark { background: var(--ink); color: var(--paper); }
.btn--dark:hover { background: #2b2360; }
.btn--outline { border-color: var(--ink); }
.btn--outline:hover { background: rgba(22, 17, 58, 0.07); }

/* Waveform motif */
.wave {
  width: 100%;
  height: clamp(84px, 15vw, 168px);
  margin-top: clamp(2rem, 5vw, 3.5rem);
}
.wave rect {
  transform-box: fill-box;
  transform-origin: center;
  animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) both;
  animation-delay: calc(var(--i) * 14ms);
}
@keyframes rise {
  from { transform: scaleY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .wave rect { animation: none; }
}

/* Sections */
.section {
  padding-block: clamp(3rem, 8vw, 5.5rem);
}
.split {
  display: grid;
  gap: 2rem 4rem;
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 52rem) {
  .split { grid-template-columns: minmax(0, 19rem) minmax(0, 1fr); }
}

h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.7rem, 3.6vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
  font-weight: 800;
  text-wrap: balance;
}
.muted { color: var(--muted); }

.topics {
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--ink);
}
.topics > div {
  display: grid;
  gap: 0.25rem 2rem;
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--line);
}
@media (min-width: 40rem) {
  .topics > div { grid-template-columns: 11rem minmax(0, 1fr); }
}
.topics dt { font-weight: 800; }
.topics dd { margin: 0; color: var(--muted); max-width: 38rem; }

/* Contact band */
.band {
  background: var(--ink);
  color: var(--on-violet);
}
.band p { max-width: 36rem; color: var(--on-violet-muted); margin: 0; }
.contacts {
  display: grid;
  gap: 1.1rem 2.5rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}
@media (min-width: 44rem) {
  .contacts { grid-template-columns: repeat(3, max-content); }
}
.contacts span {
  display: block;
  font-size: 0.9rem;
  color: var(--on-violet-muted);
}
.contacts a { font-weight: 700; font-size: 1.1rem; }

/* Inner pages */
.page-head {
  padding-block: clamp(2.5rem, 7vw, 4.5rem) 0;
}
.page-head h1 {
  margin: 0;
  max-width: 16ch;
  font-size: clamp(2.2rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  font-weight: 800;
  text-wrap: balance;
}
.prose {
  max-width: 42rem;
  padding-block: 2rem clamp(3rem, 8vw, 5rem);
}
.prose h2 {
  margin-top: 2.75rem;
  font-size: clamp(1.4rem, 2.6vw, 1.75rem);
}
.prose p, .prose li { max-width: 40rem; }
.prose ol { padding-left: 1.4rem; }
.prose li { margin-bottom: 0.5rem; padding-left: 0.3rem; }
.prose .actions { margin-top: 1.5rem; }
.updated { color: var(--muted); margin: 1rem 0 0; }

/* Footer */
.site-footer {
  border-top: 2px solid var(--ink);
  padding-block: 2.5rem;
  font-size: 0.95rem;
  color: var(--muted);
}
.footer-grid {
  display: grid;
  gap: 1.5rem 3rem;
}
@media (min-width: 44rem) {
  .footer-grid { grid-template-columns: 1.5fr 1fr; }
}
.footer-grid strong { color: var(--ink); }
.footer-grid p { margin: 0; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-links a { font-weight: 600; color: var(--ink); }
.footer-copy { grid-column: 1 / -1; }