:root {
  --navy: #000275;
  --navy-deep: #00014f;
  --navy-line: rgba(113, 229, 255, 0.2);
  --mist: #EAF1F1;
  --mist-2: #dde7e7;
  --cyan: #71E5FF;
  --pink: #FF99E4;
  --ink: #0b0d2e;
  --ink-soft: #464a70;
  --on-navy: #EAF1F1;
  --on-navy-soft: #b9bfe6;
  --line: rgba(0, 2, 117, 0.14);
  --white: #ffffff;

  --font-display: "Unbounded", system-ui, sans-serif;
  --font-body: "Hanken Grotesk", system-ui, sans-serif;
  --font-serif: "Newsreader", Georgia, serif;
  --font-mono: "DM Mono", ui-monospace, monospace;

  --wrap: 1200px;
  --radius: 14px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  --focus: var(--navy);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  scrollbar-color: var(--navy) var(--mist);
  accent-color: var(--navy);
}

body {
  margin: 0;
  background: var(--mist);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  caret-color: var(--navy);
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--pink); color: var(--navy-deep); }

img { max-width: 100%; display: block; }
a { color: inherit; text-underline-offset: 0.2em; text-decoration-thickness: 1px; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 6px;
}
.on-navy,
.site-header,
.site-footer { --focus: var(--cyan); }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 32px;
}

.skip {
  position: absolute;
  left: -999px;
  top: 10px;
  background: var(--cyan);
  color: var(--navy);
  padding: 8px 14px;
  border-radius: 8px;
  font-weight: 600;
  z-index: 100;
}
.skip:focus { left: 16px; }

/* ---------- Type ---------- */

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--navy);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.08;
  margin: 0;
  text-wrap: balance;
}

h2 { font-size: clamp(30px, 3.8vw, 50px); max-width: 18ch; }
h3 { font-size: 21px; letter-spacing: -0.015em; line-height: 1.2; }

.serif {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.lede {
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 54ch;
  margin: 24px 0 0;
  text-wrap: pretty;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--navy-deep);
  color: var(--on-navy);
  border-bottom: 1px solid var(--navy-line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.02em;
  color: var(--white);
}

.brand-mark {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.brand-at { color: var(--on-navy-soft); font-weight: 500; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a:not(.btn) {
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  color: var(--on-navy-soft);
  transition: color 0.2s var(--ease-out);
}
.nav-links a:not(.btn):hover { color: var(--white); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--navy-line);
  border-radius: 999px;
  padding: 8px 16px;
  font: 600 14px var(--font-body);
  color: var(--white);
  cursor: pointer;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  text-decoration: none;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease-out), background-color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn svg { width: 16px; height: 16px; transition: transform 0.25s var(--ease-out); }
.btn:hover svg { transform: translateX(3px); }

.btn-primary { background: var(--navy); color: var(--white); }
.btn-primary:hover { background: var(--navy-deep); }

.btn-cyan { background: var(--cyan); color: var(--navy-deep); }
.btn-cyan:hover { background: #9aedff; }

.btn-ghost { border-color: var(--line); color: var(--navy); }
.btn-ghost:hover { border-color: var(--navy); }
.on-navy .btn-ghost { border-color: rgba(234, 241, 241, 0.32); color: var(--white); }
.on-navy .btn-ghost:hover { border-color: var(--white); }

.nav-links .btn { padding: 11px 20px; }

/* ---------- Section scaffolding ---------- */

section { padding: 128px 0; }

.on-navy {
  background: var(--navy);
  color: var(--on-navy);
}
.on-navy h1, .on-navy h2, .on-navy h3 { color: var(--white); }
.on-navy .lede { color: var(--on-navy-soft); }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}
.section-head .lede { margin: 0; max-width: 40ch; }

.fine {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-soft);
  margin: 40px 0 0;
  max-width: 78ch;
}

/* ---------- Hero ---------- */

.hero {
  padding: 96px 0 120px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 64px;
  align-items: center;
  position: relative;
}

.hero h1 {
  font-size: clamp(38px, 5.4vw, 72px);
  letter-spacing: -0.03em;
  line-height: 1.04;
}
.hero h1 .serif {
  color: var(--pink);
  font-size: 1.12em;
  line-height: 0.9;
}

.hero .lede { font-size: 20px; margin-top: 32px; }

.hero-ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 40px;
}

.hero-note {
  margin: 28px 0 0;
  font-size: 14px;
  color: var(--on-navy-soft);
}

.hero-visual {
  position: relative;
  height: 520px;
  display: grid;
  place-items: center;
}

/* The signature: two cells, cyan and pink, drifting into overlap around the mark */
.cells {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.cell {
  position: absolute;
  width: 440px;
  height: 440px;
  border-radius: 50%;
  top: 50%;
  left: 50%;
  margin: -220px 0 0 -220px;
  animation: cell-in 1.8s var(--ease-out) both;
}
.cell-a { border: 1.5px solid var(--cyan); --x: -70px; }
.cell-b { border: 1.5px solid var(--pink); --x: 70px; animation-delay: 0.08s; }
@keyframes cell-in {
  from { transform: translateX(calc(var(--x) * 2.2)); opacity: 0.35; }
  to { transform: translateX(var(--x)); opacity: 1; }
}

.hero-mark {
  position: relative;
  width: 360px;
  height: 360px;
}

/* ---------- Topics band ---------- */

.topics {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.topics ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 28px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--navy);
}
.topics li { display: inline-flex; align-items: center; gap: 28px; }
.topics li + li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--pink);
}

/* ---------- About ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.about-copy p { color: var(--ink-soft); margin: 0 0 20px; max-width: 54ch; }
.about-copy p:first-child {
  color: var(--ink);
  font-size: 22px;
  line-height: 1.45;
  letter-spacing: -0.01em;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 96px;
  border-top: 1px solid var(--navy);
}
.principle {
  padding: 32px 32px 0 0;
}
.principle + .principle {
  padding-left: 32px;
  border-left: 1px solid var(--line);
}
.principle h3 {
  font-size: 24px;
  margin-bottom: 12px;
}
.principle:nth-child(1) h3::after,
.principle:nth-child(2) h3::after,
.principle:nth-child(3) h3::after {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-left: 4px;
  vertical-align: baseline;
}
.principle:nth-child(1) h3::after { background: var(--cyan); }
.principle:nth-child(2) h3::after { background: var(--pink); }
.principle:nth-child(3) h3::after { background: var(--navy); }
.principle p { margin: 0; color: var(--ink-soft); max-width: 34ch; }

/* ---------- Events (rows) ---------- */

.event-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--navy-line);
}
.event-row {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 40px;
  align-items: baseline;
  padding: 32px 0;
  border-bottom: 1px solid var(--navy-line);
}
.event-row h3 { font-size: clamp(20px, 2vw, 26px); }
.event-meta {
  display: block;
  margin-top: 10px;
  font-size: 14px;
  color: var(--cyan);
}
.event-row p { margin: 0; color: var(--on-navy-soft); max-width: 46ch; }

/* ---------- Calendar ---------- */

.calendar-frame {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.calendar-frame iframe {
  display: block;
  width: 100%;
  height: 560px;
  border: 0;
}
.fine a { color: var(--navy); font-weight: 600; }

/* ---------- Sponsors ---------- */

.sponsor-cta {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px 48px;
  flex-wrap: wrap;
  padding-top: 56px;
  border-top: 1px solid var(--navy);
}
.sponsor-cta h2 { margin-bottom: 16px; }
.sponsor-cta p { margin: 0; max-width: 56ch; color: var(--ink-soft); font-size: 18px; }

/* ---------- FAQ ---------- */

.faq-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 80px;
  align-items: start;
}
.faq-grid .lede a, .faq details a { color: var(--navy); font-weight: 600; }

.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 24px 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.015em;
  color: var(--navy);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  background:
    linear-gradient(var(--navy), var(--navy)) center / 100% 1.5px no-repeat,
    linear-gradient(var(--navy), var(--navy)) center / 1.5px 100% no-repeat;
  transition: transform 0.3s var(--ease-out);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq summary:hover { color: var(--navy-deep); }
.faq details p { margin: -6px 0 26px; color: var(--ink-soft); max-width: 62ch; }

/* ---------- Join ---------- */

.join {
  border-radius: 28px;
  padding: 80px 64px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.join h2 { max-width: 14ch; }
.join h2 .serif { color: var(--pink); }
.join p { color: var(--on-navy-soft); margin: 20px 0 32px; max-width: 46ch; }
.join-mark { width: 260px; height: 260px; justify-self: end; }
.join-ctas { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- Disclaimer + footer ---------- */

.disclaimer {
  border-top: 1px solid var(--line);
  padding: 48px 0;
}
.disclaimer-box {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px 40px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.disclaimer-box h2 {
  margin: 0 0 8px;
  max-width: none;
  letter-spacing: -0.01em;
  line-height: 1.3;
  font-size: 18px;
  font-weight: 600;
  color: var(--navy);
}
.disclaimer-box p { margin: 0; }

.site-footer {
  background: var(--navy-deep);
  color: var(--on-navy-soft);
  padding: 72px 0 32px;
  font-size: 15px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
}
.footer-tag {
  margin: 20px 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--white);
}
.site-footer .foot-h {
  margin: 0 0 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--cyan);
}
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.site-footer a { text-decoration: none; transition: color 0.2s var(--ease-out); }
.site-footer a:hover { color: var(--white); }
.footer-bottom {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid rgba(234, 241, 241, 0.12);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(185, 191, 230, 0.8);
}

/* ---------- Legal pages ---------- */

.legal-hero { padding: 88px 0 56px; }
.legal-hero h1 { font-size: clamp(34px, 4.6vw, 56px); }
.legal-meta {
  font-size: 15px;
  color: var(--on-navy-soft);
  margin: 18px 0 0;
}

.legal { padding: 72px 0 128px; }
.legal-body { max-width: 720px; }
.legal-body h2 {
  font-size: 21px;
  max-width: none;
  margin: 56px 0 14px;
  letter-spacing: -0.02em;
}
.legal-body p, .legal-body li { color: #2c2f55; font-size: 17px; line-height: 1.7; }
.legal-body ul { padding-left: 22px; }
.legal-body li { margin-bottom: 8px; }
.legal-body li::marker { color: var(--navy); }
.legal-body a { color: var(--navy); font-weight: 500; }
.legal-body .callout {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin: 0;
  color: var(--navy);
  font-size: 16px;
}

/* ---------- Responsive ---------- */

@media (max-width: 1020px) {
  .hero-grid, .about-grid, .faq-grid, .join { grid-template-columns: 1fr; }
  .hero-grid { gap: 64px; }
  .hero-visual { height: 460px; }
  .about-grid, .faq-grid { gap: 40px; }
  .principles { grid-template-columns: 1fr; margin-top: 64px; }
  .principle, .principle + .principle { padding: 28px 0; border-left: 0; }
  .principle + .principle { border-top: 1px solid var(--line); }
  .join-mark { justify-self: start; width: 200px; height: 200px; }
  .disclaimer-box { grid-template-columns: 1fr; gap: 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > :first-child { grid-column: span 2; }
}

@media (max-width: 760px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  section { padding: 88px 0; }
  .nav { height: 64px; }
  html { scroll-padding-top: 76px; }
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px 16px 24px;
    background: var(--navy-deep);
    border-bottom: 1px solid var(--navy-line);
  }
  .nav-links.open { display: flex; }
  .nav-links a:not(.btn) { display: block; padding: 12px 0; font-size: 18px; color: var(--white); }
  .nav-links .btn { justify-content: center; margin-top: 12px; padding: 16px; }
  .hero { padding: 56px 0 88px; }
  .hero .lede { font-size: 18px; }
  .hero-visual { height: 300px; }
  .cell { width: 260px; height: 260px; margin: -130px 0 0 -130px; }
  .cell-a { --x: -44px; }
  .cell-b { --x: 44px; }
  .hero-mark { width: 200px; height: 200px; }
  .topics ul { font-size: 14px; justify-content: flex-start; gap: 10px 18px; }
  .topics li { gap: 18px; }
  .topics li + li::before { display: none; }
  .event-row { grid-template-columns: 1fr; gap: 12px; padding: 24px 0 28px; }
  .calendar-frame iframe { height: 520px; }
  .join { padding: 48px 24px; border-radius: 20px; }
  .join-mark { width: 140px; height: 140px; }
  .legal-hero { padding: 56px 0 40px; }
  .legal { padding: 48px 0 88px; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > :first-child { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}