@font-face {
  font-family: "Source Serif 4";
  src: url("/fonts/source-serif-4-latin-wght-normal.woff2") format("woff2-variations");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink: #0a0a0a;
  --paper: #f2f0ec;
  --paper-82: rgba(242, 240, 236, 0.82);
  --paper-42: rgba(242, 240, 236, 0.42);
  --paper-11: rgba(242, 240, 236, 0.11);
  --paper-10: rgba(242, 240, 236, 0.1);
  --paper-38: rgba(242, 240, 236, 0.38);
  --sheet: rgba(14, 12, 10, 0.78);
}

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

html,
body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: "Source Serif 4", "Source Serif Pro", "Iowan Old Style", "Palatino Linotype", Palatino, serif;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  background: var(--ink) url("/hero-copper.jpg") 62% 40% / cover no-repeat;
  pointer-events: none;
}

.mast {
  position: fixed;
  top: 32px;
  left: 48px;
  z-index: 4;
  display: block;
  height: 30px;
  line-height: 0;
}

.lockup {
  display: block;
  height: 30px;
  width: auto;
}

.stage {
  position: relative;
  z-index: 1;
  min-height: 100svh;
}

.stage::before,
.stage::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero::before {
  background: linear-gradient(
    90deg,
    rgba(10, 10, 10, 0.42),
    rgba(10, 10, 10, 0.08) 42%,
    rgba(10, 10, 10, 0.05)
  );
}

.hero::after {
  background: linear-gradient(180deg, rgba(10, 10, 10, 0.18), transparent 32%, rgba(10, 10, 10, 0.38));
}

.register::before {
  background: linear-gradient(
    90deg,
    rgba(10, 10, 10, 0.12),
    rgba(10, 10, 10, 0.28) 42%,
    rgba(10, 10, 10, 0.55)
  );
}

.register::after {
  background: linear-gradient(180deg, rgba(10, 10, 10, 0.12), transparent 36%);
}

.hero-copy {
  position: absolute;
  left: 48px;
  bottom: 72px;
  z-index: 2;
  max-width: 11ch;
}

.hero h1 {
  margin: 0;
  font-size: 68px;
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.96;
}

.lead {
  margin: 22px 0 28px;
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.015em;
  color: var(--paper-82);
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 16px 28px;
  border: 0;
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.02em;
  text-decoration: none;
  cursor: pointer;
}

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

.hero-cta {
  width: max-content;
}

.register {
  display: flex;
  align-items: stretch;
  justify-content: flex-end;
}

.sheet {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  width: 560px;
  margin: 40px 40px 40px auto;
  padding: 36px 40px 32px;
  background: var(--sheet);
  border: 1px solid var(--paper-10);
  border-radius: 28px;
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.kicker {
  margin: 0 0 16px;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper-42);
}

.sheet h2 {
  margin: 0 0 28px;
  font-size: 36px;
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.sheet-panel[hidden] {
  display: none;
}

.choices {
  display: grid;
  gap: 10px;
  margin: 0 0 28px;
}

.choice {
  display: block;
  cursor: pointer;
}

.choice input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.choice-face {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 52px;
  padding: 12px 18px;
  border: 1px solid var(--paper-10);
  border-radius: 16px;
  color: var(--paper-42);
  font-size: 18px;
  letter-spacing: -0.015em;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.choice-mark {
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  background: currentColor;
  opacity: 0.42;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Crect x='28' y='12' width='8' height='24'/%3E%3Crect x='4' y='44' width='24' height='8'/%3E%3Crect x='36' y='44' width='24' height='8'/%3E%3C/svg%3E")
    center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Crect x='28' y='12' width='8' height='24'/%3E%3Crect x='4' y='44' width='24' height='8'/%3E%3Crect x='36' y='44' width='24' height='8'/%3E%3C/svg%3E")
    center / contain no-repeat;
}

.choice input:checked + .choice-face {
  background: var(--paper-11);
  border-color: var(--paper-38);
  color: var(--paper);
}

.choice input:checked + .choice-face .choice-mark {
  opacity: 1;
}

.choice input:focus-visible + .choice-face {
  outline: 2px solid var(--paper);
  outline-offset: 2px;
}

.field {
  display: block;
  margin: 0 0 22px;
}

.field-label {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--paper-42);
}

.field input,
.field textarea {
  display: block;
  width: 100%;
  padding: 0 0 10px;
  border: 0;
  border-bottom: 1px solid var(--paper-10);
  border-radius: 0;
  background: transparent;
  color: var(--paper);
  font: inherit;
  font-size: 18px;
  letter-spacing: -0.015em;
  outline: none;
  resize: none;
}

.field textarea {
  min-height: 5.5em;
  line-height: 1.35;
}

.field input:focus,
.field textarea:focus,
.field.live input,
.field.live textarea {
  border-bottom-color: var(--paper);
}

.field-note {
  margin-bottom: 28px;
}

.field-error {
  margin: -14px 0 18px;
  font-size: 14px;
  line-height: 1.35;
  color: var(--paper-82);
}

.field-error[hidden] {
  display: none;
}

.submit {
  width: 100%;
}

.submit[disabled] {
  cursor: wait;
  opacity: 0.92;
}

.sheet-body {
  margin: 0;
  max-width: 18.5em;
  font-size: 20px;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.35;
}

.fit-mark {
  display: inline-block;
  width: 1.6cap;
  height: 1.6cap;
  margin: 0 0.02em 0 0.08em;
  vertical-align: -0.38em;
}

.sheet-quiet {
  margin: 28px 0 0;
  font-size: 16px;
  letter-spacing: -0.01em;
  color: var(--paper-42);
}

.site-foot {
  position: absolute;
  left: 48px;
  bottom: 28px;
  z-index: 2;
  max-width: 36ch;
  font-size: 13px;
  line-height: 1.45;
  color: var(--paper-42);
}

.site-foot p {
  margin: 0 0 8px;
}

.site-foot a {
  color: inherit;
  text-decoration: none;
}

.site-foot a:hover {
  color: var(--paper-82);
}

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

@media (max-width: 980px) {
  .mast {
    top: 24px;
    left: 24px;
  }

  .hero {
    min-height: 78svh;
  }

  .hero-copy {
    left: 24px;
    bottom: 40px;
  }

  .hero h1 {
    font-size: clamp(42px, 11vw, 60px);
  }

  .register {
    display: block;
    min-height: auto;
    padding: 24px 16px 32px;
  }

  .sheet {
    width: 100%;
    margin: 0;
    padding: 28px 22px 24px;
  }

  .sheet h2 {
    font-size: clamp(28px, 7vw, 36px);
  }

  .site-foot {
    position: relative;
    left: auto;
    bottom: auto;
    margin: 28px 8px 0;
    max-width: none;
  }
}