:root {
  --blue: #24159e;
  --sky: #d6f7ff;
  --sky-strong: #bdf0fb;
  --mint: #8bedba;
  --ink: #19166e;
  --paper: #f7fcfc;
  --night: #211490;
  --line: rgba(36, 21, 158, 0.19);
  --sans: "Manrope", Arial, sans-serif;
  --mono: "DM Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--blue);
  font-family: var(--sans);
  margin: 0;
}
a { color: inherit; text-decoration: none; }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  border: 2px solid var(--blue);
  border-radius: 999px;
  background: var(--paper);
  color: var(--blue);
  font-weight: 800;
  text-decoration: none;
  transition: top 150ms ease;
}
.skip-link:focus { top: 1rem; }

.site-header {
  align-items: center;
  color: var(--blue);
  display: flex;
  justify-content: space-between;
  left: 0;
  padding: 22px 4.5vw;
  position: absolute;
  right: 0;
  top: 0;
  z-index: 3;
}
.brand { align-items: center; display: flex; font-size: 17px; font-weight: 700; gap: 14px; text-transform: uppercase; }
.brand-mark { display: block; height: 34px; position: relative; width: 34px; }
.brand-mark i { background: var(--mint); border-radius: 50%; height: 6px; left: 14px; position: absolute; top: 14px; width: 6px; }
.brand-mark i:nth-child(1) { transform: translateY(-13px); }
.brand-mark i:nth-child(2) { transform: translate(9px, -9px); }
.brand-mark i:nth-child(3) { transform: translateX(13px); }
.brand-mark i:nth-child(4) { transform: translate(9px, 9px); }
.brand-mark i:nth-child(5) { transform: translateY(13px); }
.brand-mark i:nth-child(6) { transform: translate(-9px, 9px); }
.brand-mark i:nth-child(7) { transform: translateX(-13px); }
.brand-mark i:nth-child(8) { transform: translate(-9px, -9px); }
.site-nav { align-items: center; display: flex; font-family: var(--mono); font-size: 14px; gap: 28px; left: 50%; position: absolute; text-transform: uppercase; transform: translateX(-50%); }
.site-nav a:not(.nav-cta) { align-items: center; display: inline-flex; min-height: 24px; transition: color 180ms ease; }
.site-nav a:not(.nav-cta):hover { color: #5b50c3; }
.nav-cta { align-items: center; background: var(--blue); border-radius: 99px; color: white; display: inline-flex; min-height: 24px; padding: 15px 23px; position: fixed; right: 4.5vw; top: 20px; }
.mobile-register { display: none; }
.menu-toggle { min-height: 24px; display: none; }

.hero {
  background: url("assets/leadership-in-tech-cover.png") center / cover no-repeat;
  min-height: 100svh;
  overflow: hidden;
  position: relative;
}
.hero::before { background: var(--sky); content: ""; height: 72px; left: 0; position: absolute; top: 14%; width: 90px; }
.hero-copy {
  background: var(--sky);
  border-radius: 54px 230px 230px 54px;
  bottom: 13.5%;
  display: flex;
  flex-direction: column;
  left: 0;
  padding: 0 7vw 0 3.5vw;
  position: absolute;
  top: 9.5%;
  width: min(52vw, 715px);
}
.hero-kicker, .section-label, .track-number, .hero-meta, .schedule p, .schedule span, .site-footer {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.hero-brand { font-size: 17px; margin-top: 40px; }
.hero-kicker { font-size: clamp(17px, 1.7vw, 24px); letter-spacing: -0.055em; line-height: 1; margin: 18px 0 0; }
h1, h2, h3 { font-weight: 500; letter-spacing: -0.075em; line-height: 0.91; margin: 0; }
h1 { font-size: clamp(64px, 7.1vw, 110px); margin-top: auto; }
h2 { font-size: clamp(64px, 7.6vw, 118px); }
h2 em { color: #5a51c4; font-style: normal; }
.hero-host { font-family: var(--mono); font-size: 17px; letter-spacing: 0.04em; margin: 44px 0 43px; }
.hero-meta { bottom: 42px; color: white; display: flex; gap: 42px; position: absolute; right: 4vw; }
.hero-meta p { margin: 0; }
.hero-meta span { display: block; font-size: 16px; margin-bottom: 3px; }
.hero-scroll { align-items: center; bottom: 35px; color: var(--blue); display: flex; font-family: var(--mono); font-size: 10px; gap: 12px; left: 4.5vw; min-height: 24px; position: absolute; text-transform: uppercase; }

.intro { background: var(--sky); padding: 145px 7vw 165px; }
.section-label { margin: 0 0 48px; }
.intro-grid { display: grid; gap: 8vw; grid-template-columns: 1.2fr 0.8fr; }
.intro-copy { align-self: end; color: rgba(25, 22, 110, .75); font-size: 17px; line-height: 1.75; max-width: 520px; }
.intro-copy p:first-child { color: var(--blue); font-size: 22px; line-height: 1.5; margin-top: 0; }
.text-link { align-items: center; color: var(--blue); display: inline-flex; font-family: var(--mono); font-size: 12px; gap: 18px; letter-spacing: .08em; margin-top: 24px; min-height: 24px; text-transform: uppercase; }
.text-link span { font-size: 22px; transition: transform 180ms ease; }
.text-link:hover span { transform: translateX(6px); }
.stat-row { border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 110px; }
.stat-row article { border-right: 1px solid var(--line); padding: 34px 28px 0 0; }
.stat-row article:last-child { border-right: 0; }
.stat-row strong { display: block; font-size: clamp(62px, 8vw, 112px); font-weight: 500; letter-spacing: -.08em; line-height: .9; }
.stat-row span { display: block; font-family: var(--mono); font-size: 11px; letter-spacing: .08em; margin-top: 14px; text-transform: uppercase; }

.tracks { background: var(--night); color: white; padding: 120px 6vw 130px; }
.tracks .section-label { color: var(--mint); }
.track-grid { display: grid; gap: 1px; grid-template-columns: repeat(3, 1fr); }
.track-card { background: rgba(255,255,255,.07); min-height: 420px; padding: 34px; transition: background 200ms ease, transform 200ms ease; }
.track-card:hover { background: rgba(255,255,255,.12); transform: translateY(-8px); }
.track-number { color: var(--mint); margin: 0 0 70px; }
.track-card h3 { font-size: clamp(48px, 5vw, 72px); }
.track-card p:not(.track-number) { color: rgba(255,255,255,.68); font-size: 15px; line-height: 1.7; margin: 30px 0; max-width: 310px; }
.track-card span { color: var(--mint); font-family: var(--mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }

.audience { background: var(--sky); display: grid; gap: 7vw; grid-template-columns: .95fr 1.05fr; padding: 140px 7vw 150px; }
.audience h2 { font-size: clamp(56px, 6.7vw, 98px); }
.audience-list { align-self: end; border-top: 1px solid var(--line); }
.audience-list article { border-bottom: 1px solid var(--line); display: grid; gap: 28px; grid-template-columns: 190px 1fr; padding: 28px 0; }
.audience-list h3 { font-size: 28px; letter-spacing: -.055em; line-height: 1; }
.audience-list p { color: rgba(25, 22, 110, .72); line-height: 1.7; margin: 0; }

.agenda { background: var(--paper); display: grid; gap: 8vw; grid-template-columns: .9fr 1.1fr; padding: 150px 7vw; }
.agenda-heading { position: sticky; top: 50px; align-self: start; }
.agenda h2 { font-size: clamp(56px, 6.3vw, 94px); }
.schedule article { align-items: center; border-top: 1px solid var(--line); display: grid; gap: 18px; grid-template-columns: 95px 1fr auto; padding: 24px 0; }
.schedule article:last-child { border-bottom: 1px solid var(--line); }
.schedule time { color: #5a51c4; font-family: var(--mono); font-size: 12px; }
.schedule p, .schedule h3 { margin: 0; }
.schedule p { color: #5a51c4; margin-bottom: 9px; }
.schedule h3 { font-size: 25px; letter-spacing: -.055em; line-height: 1.05; }
.schedule span { color: #5a51c4; font-size: 9px; }

.speaker { display: grid; grid-template-columns: 1fr 1fr; min-height: 780px; }
.speaker-image { background: url("assets/leadership-in-tech-cover.png") 76% center / auto 100% no-repeat; filter: grayscale(1); min-height: 680px; }
.speaker-copy { background: var(--sky); padding: 100px 8vw; }
.speaker-copy p:not(.section-label) { color: rgba(25, 22, 110, .75); font-size: 16px; line-height: 1.85; margin: 38px 0 0; max-width: 480px; }

.takeaways { background: var(--night); color: white; padding: 125px 6vw 135px; }
.takeaways .section-label { color: var(--mint); }
.takeaway-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.takeaway-grid article { border-left: 1px solid rgba(255,255,255,.18); min-height: 300px; padding: 28px; }
.takeaway-grid article:last-child { border-right: 1px solid rgba(255,255,255,.18); }
.takeaway-grid span { color: var(--mint); font-family: var(--mono); font-size: 11px; letter-spacing: .1em; }
.takeaway-grid p { font-size: clamp(24px, 2.5vw, 38px); letter-spacing: -.04em; line-height: 1.08; margin: 80px 0 0; }

.faq { background: var(--paper); display: grid; gap: 8vw; grid-template-columns: .85fr 1.15fr; padding: 145px 7vw; }
.faq h2 { font-size: clamp(56px, 6.4vw, 96px); }
.faq-list { border-top: 1px solid var(--line); align-self: end; }
.faq-list details { border-bottom: 1px solid var(--line); padding: 27px 0; }
.faq-list summary { cursor: pointer; font-size: 25px; font-weight: 600; letter-spacing: -.055em; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; float: right; font-family: var(--mono); font-size: 20px; font-weight: 400; }
.faq-list details[open] summary::after { content: "-"; }
.faq-list p { color: rgba(25, 22, 110, .72); line-height: 1.75; margin: 18px 56px 0 0; }

.register { background: var(--mint); padding: 130px 6vw 145px; text-align: center; }
.register .section-label { margin-bottom: 30px; }
.register-copy { font-family: var(--mono); font-size: 15px; letter-spacing: .04em; margin: 32px 0; }
.signup { background: white; border: 1px solid var(--blue); border-radius: 99px; display: flex; margin: 0 auto; max-width: 560px; overflow: hidden; padding: 5px; }
.signup input, .signup button { border: 0; border-radius: 99px; font-family: var(--mono); outline: 0; }
.signup input { flex: 1; font-size: 13px; min-width: 0; padding: 14px 18px; }
.signup button { background: var(--blue); color: white; cursor: pointer; font-size: 11px; letter-spacing: .05em; padding: 14px 20px; text-transform: uppercase; }
.form-message { font-family: var(--mono); font-size: 12px; min-height: 18px; }
.site-footer { align-items: center; background: var(--blue); color: white; display: flex; justify-content: space-between; padding: 22px 4.5vw; }
.site-footer p { margin: 0; }
.site-footer .brand { font-size: 11px; min-height: 24px; }
.site-footer .brand-mark { transform: scale(.8); }
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 650ms ease, transform 650ms ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.sr-only { clip: rect(0,0,0,0); height: 1px; margin: -1px; overflow: hidden; position: absolute; width: 1px; }

@media (max-width: 760px) {
  .site-header { padding: 18px 5vw; }
  .brand { font-size: 12px; gap: 8px; }
  .brand-mark { transform: scale(.75); }
  .menu-toggle { align-items: center; background: transparent; border: 0; color: var(--blue); display: flex; font-family: var(--mono); font-size: 11px; gap: 10px; text-transform: uppercase; z-index: 4; }
  .menu-lines, .menu-lines::before { background: currentColor; content: ""; display: block; height: 1px; transition: transform 180ms ease; width: 17px; }
  .menu-lines::before { transform: translateY(5px); }
  .site-nav { background: var(--blue); color: white; flex-direction: column; font-size: 19px; gap: 24px; inset: 0; justify-content: center; opacity: 0; pointer-events: none; position: fixed; transform: none; transition: opacity 180ms ease; z-index: 3; }
  .site-nav.is-open { opacity: 1; pointer-events: auto; }
  .nav-cta { background: var(--mint); color: var(--blue); position: static; }
  .header-cta { display: none; }
  .mobile-register { display: block; }
  .hero::before { display: none; }
  .menu-toggle[aria-expanded="true"] { color: white; }
  .hero { background-color: var(--sky); background-position: 100% top; background-repeat: no-repeat; background-size: auto 455px; min-height: 880px; padding-top: 455px; }
  .hero-copy { border-radius: 34px 116px 116px 34px; bottom: auto; display: block; left: auto; margin: 0 12px; max-width: none; padding: 26px 32px 28px 22px; position: relative; top: auto; width: calc(100% - 24px); }
  .hero-brand { font-size: 12px; margin: 0 0 22px; }
  .hero-kicker { font-size: 13px; letter-spacing: .02em; line-height: 1.1; margin: 12px 0 0; }
  h1 { font-size: clamp(52px, 15.6vw, 66px); line-height: .95; }
  h2 { font-size: clamp(60px, 17vw, 80px); }
  .hero-host { font-size: 12px; margin: 28px 0 0; }
  .hero-meta { background: rgba(214, 247, 255, .84); border: 1px solid rgba(36, 21, 158, .16); border-radius: 999px; bottom: 20px; color: var(--blue); gap: 18px; padding: 8px 12px; right: 5vw; }
  .hero-meta span { font-size: 12px; }
  .hero-meta p { font-size: 8px; }
  .hero-scroll { display: none; }
  .intro, .agenda, .register, .audience, .faq { padding: 95px 6vw; }
  .intro-grid, .agenda, .speaker, .audience, .faq { display: block; }
  .intro-copy { margin-top: 42px; }
  .stat-row { display: block; margin-top: 70px; }
  .stat-row article { border-bottom: 1px solid var(--line); border-right: 0; padding: 28px 0; }
  .audience-list { margin-top: 46px; }
  .audience-list article { display: block; }
  .audience-list h3 { margin-bottom: 15px; }
  .track-grid { display: block; }
  .tracks { padding: 85px 6vw; }
  .track-card { min-height: auto; padding: 27px; }
  .track-card + .track-card { border-top: 1px solid rgba(255,255,255,.13); }
  .track-number { margin-bottom: 36px; }
  .agenda-heading { position: static; }
  .schedule { margin-top: 46px; }
  .schedule article { grid-template-columns: 74px 1fr; }
  .schedule span { display: none; }
  .schedule h3 { font-size: 20px; }
  .speaker-image { min-height: 480px; }
  .speaker-copy { padding: 80px 6vw 95px; }
  .takeaways { padding: 85px 6vw; }
  .takeaway-grid { display: block; }
  .takeaway-grid article { border-left: 0; border-top: 1px solid rgba(255,255,255,.18); min-height: auto; padding: 26px 0; }
  .takeaway-grid article:last-child { border-bottom: 1px solid rgba(255,255,255,.18); border-right: 0; }
  .takeaway-grid p { font-size: 28px; letter-spacing: -.035em; line-height: 1.12; margin-top: 34px; }
  .faq-list { margin-top: 46px; }
  .faq-list summary { font-size: 21px; }
  .signup { display: block; background: transparent; border: 0; border-radius: 0; overflow: visible; }
  .signup input, .signup button { display: block; width: 100%; }
  .signup input { background: white; border: 1px solid var(--blue); margin-bottom: 10px; }
  .site-footer { gap: 16px; padding: 20px 5vw; }
  .site-footer p { display: none; }
}