:root {
  --ink: #071521;
  --ink-soft: #102636;
  --cream: #f4efe4;
  --paper: #fbf8f0;
  --gold: #d8ac57;
  --gold-bright: #f0cc7b;
  --cyan: #6edcf2;
  --line: rgba(7, 21, 33, 0.16);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

::selection { background: var(--gold); color: var(--ink); }

.nav {
  align-items: center;
  color: white;
  display: flex;
  height: 82px;
  justify-content: space-between;
  left: 50%;
  max-width: 1240px;
  padding: 0 24px;
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  width: 100%;
  z-index: 20;
}

.wordmark { align-items: center; display: flex; font-size: 12px; font-weight: 750; gap: 11px; letter-spacing: .16em; text-transform: uppercase; }
.wordmark-mark { align-items: center; border: 1px solid rgba(240, 204, 123, .7); border-radius: 50%; color: var(--gold-bright); display: flex; font-family: Georgia, serif; font-size: 20px; height: 38px; justify-content: center; letter-spacing: 0; width: 38px; }
.nav-links { align-items: center; display: flex; font-size: 11px; font-weight: 650; gap: 34px; letter-spacing: .14em; text-transform: uppercase; }
.nav-links a { opacity: .78; transition: opacity .2s ease; }
.nav-links a:hover, .nav-links a:focus-visible { opacity: 1; }
.date-pill { border: 1px solid rgba(255,255,255,.32); border-radius: 999px; padding: 10px 15px; }

.hero { background: var(--ink); color: white; min-height: 820px; overflow: hidden; position: relative; }
.hero-background { background-image: linear-gradient(90deg, rgba(4,16,28,.97) 0%, rgba(4,16,28,.84) 35%, rgba(4,16,28,.3) 70%, rgba(4,16,28,.55) 100%), url('physics-background-v1.png'); background-position: center; background-size: cover; inset: 0; opacity: .74; position: absolute; transform: scale(1.02); }
.hero-background::after { background: linear-gradient(180deg, rgba(7,21,33,.18), transparent 40%, var(--ink)); content: ""; inset: 0; position: absolute; }
.hero-grain { background-image: radial-gradient(rgba(255,255,255,.13) .65px, transparent .7px); background-size: 4px 4px; inset: 0; mix-blend-mode: soft-light; opacity: .22; pointer-events: none; position: absolute; }
.hero-inner { align-items: center; display: grid; gap: 70px; grid-template-columns: 1.05fr .8fr; margin: 0 auto; max-width: 1240px; min-height: 820px; padding: 120px 24px 100px; position: relative; z-index: 2; }
.hero-copy { max-width: 670px; padding-top: 12px; }
.eyebrow { align-items: center; color: var(--gold-bright); display: flex; font-size: 11px; font-weight: 750; gap: 12px; letter-spacing: .2em; margin: 0 0 30px; text-transform: uppercase; }
.eyebrow > span { background: var(--gold); height: 1px; width: 38px; }
.hero h1 { font-family: Georgia, "Times New Roman", serif; font-size: clamp(86px, 10vw, 158px); font-weight: 400; letter-spacing: -.07em; line-height: .78; margin: 0 0 36px; }
.hero h1 span { color: var(--gold-bright); font-style: italic; }
.hero-deck { font-family: Georgia, "Times New Roman", serif; font-size: clamp(27px, 3.1vw, 42px); font-weight: 400; letter-spacing: -.025em; line-height: 1.06; margin: 0 0 26px; }
.hero-intro { color: rgba(255,255,255,.7); font-size: 15px; line-height: 1.75; margin: 0; max-width: 565px; }
.hero-actions { align-items: center; display: flex; gap: 30px; margin-top: 38px; }
.button { align-items: center; border-radius: 2px; display: inline-flex; font-size: 11px; font-weight: 750; gap: 26px; justify-content: space-between; letter-spacing: .12em; min-width: 205px; padding: 16px 19px; text-transform: uppercase; transition: transform .2s ease, background .2s ease; }
.button:hover, .button:focus-visible { transform: translateY(-2px); }
.button-gold { background: var(--gold); color: var(--ink); }
.text-link { border-bottom: 1px solid rgba(255,255,255,.35); font-size: 11px; font-weight: 700; letter-spacing: .12em; padding: 13px 0 9px; text-transform: uppercase; }
.text-link span { color: var(--gold-bright); margin-left: 15px; }

.portrait-card { align-self: center; justify-self: end; margin: 24px 18px 0 0; position: relative; width: min(390px, 100%); }
.portrait-card::before { border: 1px solid rgba(240,204,123,.45); content: ""; inset: -13px 13px 13px -13px; pointer-events: none; position: absolute; z-index: -1; }
.portrait-halo { background: var(--cyan); border-radius: 50%; filter: blur(68px); height: 180px; opacity: .17; position: absolute; right: -40px; top: -30px; width: 180px; }
.portrait-card img { aspect-ratio: 4 / 4.9; filter: saturate(.82) contrast(1.04); object-fit: cover; object-position: 44% center; width: 100%; }
.portrait-card figcaption { background: rgba(5,17,29,.93); border-left: 3px solid var(--gold); bottom: -40px; display: grid; left: 22px; padding: 17px 20px; position: absolute; right: -22px; }
.portrait-card figcaption span { color: var(--gold-bright); font-size: 9px; font-weight: 750; letter-spacing: .18em; text-transform: uppercase; }
.portrait-card figcaption strong { font-family: Georgia, serif; font-size: 24px; font-weight: 400; margin: 3px 0 4px; }
.portrait-card figcaption em { color: rgba(255,255,255,.58); font-size: 10px; font-style: normal; letter-spacing: .12em; text-transform: uppercase; }
.event-stamp { align-items: center; background: var(--cream); bottom: 0; color: var(--ink); display: flex; gap: 15px; left: max(24px, calc((100vw - 1192px)/2)); padding: 16px 20px; position: absolute; z-index: 4; }
.stamp-day { font-family: Georgia, serif; font-size: 48px; line-height: .9; }
.stamp-copy { border-left: 1px solid rgba(7,21,33,.22); display: grid; padding-left: 15px; }
.stamp-copy strong { font-family: Georgia, serif; font-size: 20px; font-weight: 400; }
.stamp-copy em { font-size: 8px; font-style: normal; letter-spacing: .12em; text-transform: uppercase; }
.stamp-place { border-left: 1px solid rgba(7,21,33,.22); color: #375061; font-size: 9px; font-weight: 750; letter-spacing: .14em; line-height: 1.35; padding-left: 15px; text-transform: uppercase; }
.scroll-cue { align-items: center; bottom: 23px; color: rgba(255,255,255,.45); display: flex; font-size: 8px; gap: 11px; letter-spacing: .15em; position: absolute; right: max(24px, calc((100vw - 1192px)/2)); text-transform: uppercase; z-index: 5; }
.scroll-cue i { align-items: center; border: 1px solid rgba(255,255,255,.2); border-radius: 50%; display: flex; font-size: 14px; font-style: normal; height: 30px; justify-content: center; width: 30px; }

.section { margin: 0 auto; max-width: 1240px; padding: 110px 24px; }
.section-label { align-items: center; color: #60727f; display: flex; font-size: 9px; font-weight: 750; gap: 13px; letter-spacing: .18em; margin-bottom: 66px; text-transform: uppercase; }
.section-label span { align-items: center; border: 1px solid rgba(7,21,33,.22); border-radius: 50%; color: var(--ink); display: flex; height: 29px; justify-content: center; letter-spacing: 0; width: 29px; }
.section-label.light { color: rgba(255,255,255,.48); }
.section-label.light span { border-color: rgba(255,255,255,.2); color: var(--gold-bright); }
.about-grid { display: grid; gap: 90px; grid-template-columns: .9fr 1.1fr; }
.about h2, .speakers h2 { font-family: Georgia, serif; font-size: clamp(52px, 6.2vw, 82px); font-weight: 400; letter-spacing: -.06em; line-height: .9; margin: 0; }
.about h2 em, .speakers h2 em { color: #a5792a; font-weight: 400; }
.about-copy { border-left: 1px solid var(--line); padding-left: 54px; }
.about-copy p { color: #61717c; font-size: 14px; line-height: 1.8; margin: 24px 0 0; max-width: 590px; }
.about-copy .lead { color: var(--ink); font-family: Georgia, serif; font-size: clamp(22px, 2.2vw, 29px); letter-spacing: -.025em; line-height: 1.4; margin-top: 0; }
.theory-strip { height: 280px; margin-top: 88px; overflow: hidden; position: relative; }
.theory-strip::after { background: linear-gradient(90deg, rgba(5,17,29,.12), rgba(5,17,29,.58)); content: ""; inset: 0; position: absolute; }
.theory-strip img { height: 100%; object-fit: cover; object-position: center 56%; width: 100%; }
.theory-note { bottom: 30px; color: white; display: grid; position: absolute; right: 34px; text-align: right; z-index: 2; }
.theory-note span { color: var(--gold-bright); font-family: Georgia, serif; font-size: 22px; font-style: italic; }
.theory-note strong { font-size: 8px; letter-spacing: .15em; margin-top: 7px; text-transform: uppercase; }

.speakers { background: var(--ink); color: white; max-width: none; padding-left: max(24px, calc((100vw - 1192px)/2)); padding-right: max(24px, calc((100vw - 1192px)/2)); position: relative; }
.speakers::before { background-image: url('physics-background-v1.png'); background-position: center; background-size: cover; content: ""; inset: 0; opacity: .08; position: absolute; }
.speakers > * { position: relative; z-index: 1; }
.speaker-heading { align-items: end; display: grid; gap: 100px; grid-template-columns: 1fr 1fr; margin-bottom: 70px; }
.speaker-heading h2 em { color: var(--gold-bright); }
.speaker-heading p { color: rgba(255,255,255,.58); font-size: 15px; line-height: 1.7; margin: 0 0 5px; max-width: 430px; }
.speaker-list { border-top: 1px solid rgba(255,255,255,.17); }
.speaker-card { align-items: center; border-bottom: 1px solid rgba(255,255,255,.17); display: grid; gap: 24px; grid-template-columns: 42px 78px 1fr 40px; min-height: 122px; padding: 18px 10px; transition: background .2s ease, padding .2s ease; }
.speaker-card:hover { background: rgba(255,255,255,.035); padding-left: 18px; }
.speaker-number { color: rgba(255,255,255,.35); font-family: Georgia, serif; font-size: 13px; }
.speaker-initials { align-items: center; background: linear-gradient(145deg, #203b4e, #0f2434); border: 1px solid rgba(240,204,123,.28); border-radius: 50%; color: var(--gold-bright); display: flex; font-family: Georgia, serif; font-size: 19px; height: 58px; justify-content: center; width: 58px; }
.speaker-card h3 { font-family: Georgia, serif; font-size: clamp(25px, 3vw, 36px); font-weight: 400; letter-spacing: -.03em; margin: 0 0 5px; }
.speaker-name-link { text-decoration-color: transparent; text-decoration-thickness: 1px; text-underline-offset: 7px; transition: color .2s ease, text-decoration-color .2s ease; }
.speaker-name-link:hover, .speaker-name-link:focus-visible { color: var(--gold-bright); text-decoration-color: currentColor; }
.speaker-name-link:focus-visible { border-radius: 2px; outline: 1px solid var(--gold-bright); outline-offset: 5px; }
.speaker-card p { color: var(--gold-bright); font-size: 9px; font-weight: 750; letter-spacing: .16em; margin: 0; text-transform: uppercase; }
.speaker-arrow { align-items: center; border: 1px solid rgba(255,255,255,.22); border-radius: 50%; color: rgba(255,255,255,.66); display: flex; font-size: 16px; height: 34px; justify-content: center; width: 34px; }
.talk-list { display: grid; gap: 18px; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 46px; }
.talk-card { background: rgba(255,255,255,.045); border: 1px solid rgba(255,255,255,.13); display: flex; flex-direction: column; min-height: 100%; padding: 28px; }
.talk-card .talk-speaker { color: var(--gold-bright); font-size: 9px; font-weight: 750; letter-spacing: .18em; margin: 0 0 13px; text-transform: uppercase; }
.talk-card h3 { color: white; font-family: Georgia, serif; font-size: clamp(23px, 2.1vw, 31px); font-weight: 400; letter-spacing: -.025em; line-height: 1.08; margin: 0 0 18px; }
.talk-card p:not(.talk-speaker) { color: rgba(255,255,255,.66); font-size: 14px; line-height: 1.75; margin: 0; }

.details { padding-bottom: 125px; }
.details-grid { align-items: center; display: grid; gap: 110px; grid-template-columns: 1fr .9fr; }
.date-display { align-items: baseline; border-bottom: 1px solid var(--line); border-top: 1px solid var(--line); display: flex; font-family: Georgia, serif; justify-content: space-between; padding: 29px 4px 35px; }
.date-display span, .date-display em, .date-display strong { font-size: clamp(64px, 9vw, 112px); font-style: normal; font-weight: 400; letter-spacing: -.08em; line-height: .9; }
.date-display em { color: #a5792a; }
.date-display span::after, .date-display em::after { color: rgba(7,21,33,.24); content: "/"; margin-left: 18px; }
.eyebrow.dark { color: #8a681f; margin-bottom: 23px; }
.detail-copy h2 { font-family: Georgia, serif; font-size: clamp(38px, 4vw, 56px); font-weight: 400; letter-spacing: -.045em; line-height: 1; margin: 0 0 18px; }
.location { color: #526877; font-size: 13px; font-weight: 700; letter-spacing: .08em; margin: 0; text-transform: uppercase; }
.fine-print { color: #73828b; font-size: 13px; line-height: 1.65; margin: 30px 0; max-width: 410px; }
.schedule-table-wrap { border-bottom: 1px solid var(--line); border-top: 1px solid var(--line); margin: 32px 0; }
.schedule-table { border-collapse: collapse; width: 100%; }
.schedule-table caption { height: 1px; overflow: hidden; position: absolute; width: 1px; }
.schedule-table tr + tr { border-top: 1px solid var(--line); }
.schedule-table th, .schedule-table td { padding: 17px 0; text-align: left; vertical-align: top; }
.schedule-table th { color: #8a681f; font-size: 11px; font-weight: 750; letter-spacing: .08em; padding-right: 22px; text-transform: uppercase; white-space: nowrap; width: 48%; }
.schedule-table td { color: var(--ink); font-family: Georgia, serif; font-size: 21px; line-height: 1.15; }
.button-dark { background: var(--ink); color: white; }
.message-link { align-items: center; border-bottom: 1px solid rgba(7,21,33,.3); color: #8a681f; display: inline-flex; font-size: 11px; font-weight: 750; gap: 14px; letter-spacing: .12em; margin-left: 24px; padding: 13px 0 9px; text-transform: uppercase; transition: color .2s ease, border-color .2s ease; }
.message-link:hover, .message-link:focus-visible { border-color: currentColor; color: var(--ink); }

footer { align-items: center; background: #050f18; color: white; display: grid; grid-template-columns: 120px 1fr auto; min-height: 310px; padding: 55px max(24px, calc((100vw - 1192px)/2)); }
.footer-portrait { border-radius: 50%; height: 92px; overflow: hidden; width: 92px; }
.footer-portrait img { height: 100%; object-fit: cover; object-position: 46% 35%; width: 100%; }
footer > p { font-family: Georgia, serif; font-size: clamp(31px, 4vw, 52px); letter-spacing: -.04em; line-height: 1.04; margin: 0; }
footer > p em { color: var(--gold-bright); font-weight: 400; }
.footer-meta { align-items: end; color: rgba(255,255,255,.38); display: flex; flex-direction: column; font-size: 8px; font-weight: 750; gap: 8px; letter-spacing: .18em; text-transform: uppercase; }

@media (max-width: 900px) {
  .hero-inner { gap: 45px; grid-template-columns: 1fr .62fr; }
  .portrait-card { margin-right: 0; }
  .about-grid, .speaker-heading, .details-grid { gap: 55px; }
  footer { grid-template-columns: 100px 1fr; }
  .footer-meta { display: none; }
}

@media (max-width: 700px) {
  .nav { height: 68px; }
  .nav-links > a:not(.date-pill) { display: none; }
  .hero { min-height: 930px; }
  .hero-background { background-image: linear-gradient(180deg, rgba(4,16,28,.68), rgba(4,16,28,.96) 56%, var(--ink)), url('physics-background-v1.png'); background-position: 58% top; }
  .hero-inner { align-content: start; gap: 58px; grid-template-columns: 1fr; min-height: 930px; padding-top: 112px; }
  .hero-copy { order: 2; padding: 0 0 92px; }
  .portrait-card { justify-self: end; order: 1; width: min(240px, 66vw); }
  .portrait-card img { aspect-ratio: 1 / 1; }
  .portrait-card figcaption { bottom: -34px; left: -70px; right: 8px; }
  .hero h1 { font-size: clamp(76px, 24vw, 112px); margin-bottom: 30px; }
  .hero-deck br { display: none; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 12px; }
  .event-stamp, .scroll-cue { display: none; }
  .section { padding-bottom: 85px; padding-top: 85px; }
  .section-label { margin-bottom: 45px; }
  .about-grid, .speaker-heading, .details-grid { grid-template-columns: 1fr; }
  .about-copy { border-left: 0; border-top: 1px solid var(--line); padding-left: 0; padding-top: 35px; }
  .theory-strip { height: 220px; margin-top: 60px; }
  .theory-note { bottom: 20px; left: 20px; right: 20px; text-align: left; }
  .speaker-heading { gap: 30px; margin-bottom: 50px; }
  .speaker-card { grid-template-columns: 28px 58px 1fr; }
  .speaker-initials { height: 48px; width: 48px; }
  .speaker-arrow { display: none; }
  .talk-list { grid-template-columns: 1fr; }
  .talk-card { padding: 22px; }
  .details-grid { gap: 50px; }
  .date-display span::after, .date-display em::after { margin-left: 8px; }
  .schedule-table th, .schedule-table td { display: block; padding: 0; }
  .schedule-table th { padding-top: 17px; white-space: normal; width: auto; }
  .schedule-table td { padding: 5px 0 17px; }
  .message-link { margin-left: 0; margin-top: 14px; }
  footer { gap: 25px; grid-template-columns: 68px 1fr; min-height: 245px; }
  .footer-portrait { height: 58px; width: 58px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}