:root {
  color-scheme: dark;
  --ground: #090c0e;
  --paper: #f2f4f3;
  --ink: #f2f4f3;
  --muted: #a5b3b5;
  --accent: #df2d3d;
  --button: #bb1d2c;
  --button-hover: #d02435;
  --teal: #38d5c4;
  --panel: #111b1e;
  --attendance: #1c1115;
  --gold: #dfbd79;
  --hero: #111b1e;
  --hero-ink: #f2f4f3;
  --white: #fff;
  --focus: #38d5c4;
  --font: Arial, "Apple SD Gothic Neo", "Malgun Gothic", "NanumSquare Neo", sans-serif;
  --gutter: clamp(20px, 4.4vw, 72px);
  --small: 16px;
  --body: 18px;
  --detail: 24px;
  --heading: clamp(32px, 3.4vw, 48px);
  --display: clamp(48px, 7vw, 100px);
  --section-space: clamp(80px, 9vw, 140px);
  --ease: cubic-bezier(.22, 1, .36, 1);
}
* { box-sizing: border-box; }
html { background: var(--ground); scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; color: var(--ink); font-family: var(--font); font-size: var(--body); line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-underline-offset: 6px; }
a, button { -webkit-tap-highlight-color: transparent; }
a:focus-visible { outline: 3px solid var(--focus); outline-offset: 6px; }
::selection { background: var(--teal); color: var(--ground); }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p { margin: 0; }
h1, h2 { font-weight: 700; letter-spacing: -.045em; line-height: 1.08; text-wrap: balance; }
h1 { font-size: var(--display); }
h2 { font-size: var(--detail); letter-spacing: -.025em; line-height: 1.25; }
p, li { word-break: keep-all; overflow-wrap: anywhere; }
p { text-wrap: pretty; }
.frame { width: min(100%, 1600px); margin-inline: auto; padding-inline: var(--gutter); }
.skip-link { position: absolute; top: 12px; left: var(--gutter); z-index: 2; padding: 10px 16px; background: var(--teal); color: var(--ground); transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
.site-header { min-height: 104px; display: flex; align-items: center; justify-content: space-between; gap: 28px; padding-block: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-size: var(--body); font-weight: 700; letter-spacing: -.035em; white-space: nowrap; }
.brand img { width: 34px; height: 30px; }
nav { display: flex; flex-wrap: wrap; column-gap: clamp(18px, 2.4vw, 36px); row-gap: 4px; }
nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: var(--small); font-weight: 700; text-decoration: none; transition: color 300ms var(--ease); }
nav a[aria-current="page"] { color: var(--teal); }
nav a:hover, nav a:focus-visible { color: var(--accent); text-decoration: underline; text-decoration-thickness: 2px; }
.text-link:hover { color: var(--teal); }
.button { display: inline-flex; justify-content: space-between; align-items: center; gap: 36px; min-height: 56px; padding: 12px 24px; background: var(--button); color: var(--white); font-size: var(--small); font-weight: 700; text-decoration: none; transition: background-color 180ms ease, transform 180ms ease; }
.button:hover { background: var(--button-hover); }
.button:active { transform: translateY(2px); }
.button span, .text-link span { display: inline-block; font-size: 22px; transition: transform 250ms var(--ease); }
.button:hover span, .text-link:hover span { transform: translate(2px, -2px); }
.text-link { display: inline-flex; align-items: center; gap: 20px; min-height: 44px; margin-top: 12px; font-size: var(--small); }
.intro { font-size: var(--detail); line-height: 1.55; letter-spacing: -.025em; max-width: 36ch; }
.conference-hero { position: relative; isolation: isolate; overflow: clip; padding-block: clamp(48px, 5.8vw, 88px) 64px; text-align: center; }
.conference-hero::before { content: ""; position: absolute; z-index: -1; inset: 0; background: url('/assets/hero-contours.svg') no-repeat center / cover; pointer-events: none; }
.conference-hero h1 { font-size: clamp(48px, 10.5vw, 164px); line-height: .98; letter-spacing: -.065em; }
.conference-hero h1 > span:first-child { color: var(--accent); }
.hero-year { color: var(--teal); }
.event-details { max-width: 1080px; margin-inline: auto; background: var(--attendance); padding: 48px; text-align: center; }
.event-details h2 { font-size: var(--heading); margin-bottom: 40px; }
.event-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 880px; gap: 40px 24px; margin: 0 auto; }
.event-facts dt { color: var(--accent); font-size: 30px; font-weight: 700; line-height: 36px; letter-spacing: -.025em; margin-bottom: 16px; }
.event-facts dd { margin: 0; }
.detail-value { color: var(--white); font-size: 24px; font-weight: 600; letter-spacing: -.025em; line-height: 32px; }
.detail-secondary { margin-top: 16px; font-size: var(--body); color: var(--muted); }
.fact-date, .fact-fee { font-variant-numeric: tabular-nums; }
.fact-venue { container-type: inline-size; }
.venue-address { display: flex; align-items: center; justify-content: center; flex-wrap: nowrap; gap: 8px; margin-top: 16px; color: var(--ink); font-size: 18px; font-weight: 500; white-space: nowrap; }
.venue-address .detail-secondary { margin: 0; color: inherit; font-size: inherit; line-height: 24px; white-space: nowrap; }
.map-link { flex-shrink: 0; gap: 6px; margin-top: 0; color: inherit; font-size: inherit; line-height: 24px; white-space: nowrap; }
.map-link span { font-size: 18px; }
.map-link:active { transform: translateY(1px); }
.fact-registration .button { margin-top: 16px; }
.landing-section { padding-block: var(--section-space); }
.landing-section h2, .sponsors-section > h2 { font-size: var(--heading); line-height: 1.24; }
.meetup-story { display: flex; flex-direction: column; align-items: center; gap: 40px; padding-top: 32px; text-align: center; }
.story-copy { width: min(100%, 960px); }
.meetup-story h2 { word-break: keep-all; }
.story-offsec { color: var(--accent); }
.story-question { color: var(--teal); }
.story-points { padding: 0; margin: 32px auto 24px; list-style: disc inside; color: var(--white); font-size: 18px; font-weight: 500; line-height: 28px; }
.story-points li { text-wrap: balance; }
.story-points li + li { margin-top: 16px; }
.story-points li::marker { color: var(--accent); }
.signal-art { width: min(100%, 280px); padding: 16px; }
.signal-art img { width: 100%; max-width: 440px; margin-inline: auto; }
.topic-section > h2 { margin-bottom: 48px; text-align: center; }
.topic-index { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; max-width: 1200px; padding: 0; margin: 0 auto; list-style: none; }
.topic-index li { display: flex; align-items: center; justify-content: center; min-height: 112px; padding: 24px; background: #000; text-align: center; text-wrap: balance; font-size: 20px; font-weight: 700; line-height: 28px; letter-spacing: -.025em; }
.topic-index .topic-red { color: var(--accent); }
.topic-index .topic-teal { color: var(--teal); }
.program-note { display: flex; flex-direction: column; align-items: center; gap: 16px; margin-top: 32px; text-align: center; font-size: var(--small); color: var(--muted); }
.program-note > div { display: flex; gap: 32px; }
.program-note a { color: var(--ink); }
.sponsors-section { padding-bottom: 64px; }
.sponsors-section > h2 { margin-bottom: 48px; text-align: center; }
.sponsor-tier { padding: 32px; background: var(--panel); }
.sponsor-tier h3 { font-size: var(--detail); font-weight: 700; line-height: 1.35; letter-spacing: -.025em; }
.sponsor-gold { display: grid; grid-template-columns: 1fr 3fr; align-items: center; gap: 32px; padding: 40px 48px; }
.sponsor-gold h3 { color: var(--gold); font-size: 30px; }
.sponsor-link { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 160px; text-decoration: none; }
.sponsor-logo { display: flex; align-items: center; width: min(100%, 480px); aspect-ratio: 4; overflow: hidden; }
.sponsor-logo img { flex: 0 0 100%; width: 100%; max-width: none; }
.sponsor-arrow { font-size: 30px; color: var(--muted); transition: transform 300ms var(--ease), color 300ms var(--ease); }
.sponsor-link:hover .sponsor-arrow { color: var(--ink); transform: translate(4px, -4px); }
.sponsor-link:active { transform: translateY(2px); }
.sponsor-secondary { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 24px; }
.sponsor-secondary .sponsor-tier { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.sponsor-status { color: var(--muted); font-size: var(--small); }
.site-footer { display: flex; justify-content: space-between; gap: 24px; padding-block: 40px; color: var(--muted); font-size: var(--small); }
.site-footer a { text-decoration: none; }
.page-heading { padding-block: 64px 72px; }
.page-heading h1 { margin-bottom: 32px; }
.page-heading .button { margin-top: 28px; }
.content-split { display: grid; grid-template-columns: 1fr 2fr; gap: 40px; padding-block: 40px; }
.content-split:last-child { padding-bottom: 64px; }
.prose { max-width: 64ch; }
.prose p + p { margin-top: 20px; }
.about-list { max-width: 64ch; margin: 0; padding-left: 1.1em; }
.about-list li + li { margin-top: 12px; }
.page-about .page-heading, .page-schedule .page-heading { display: grid; grid-template-columns: 1fr; gap: 24px; align-items: center; padding: 40px; background: var(--hero); color: var(--hero-ink); }
.page-about .page-heading h1, .page-schedule .page-heading h1 { margin: 0; color: var(--accent); }
.page-about .content-split { padding: 40px; font-size: 20px; line-height: 32px; }
.page-about .content-split h2 { word-break: keep-all; }
.page-about .about-emphasis { color: var(--accent); font-weight: 700; }
.page-about .about-list-highlight li::marker { color: var(--accent); }
.page-about .content-split:last-child { background: var(--panel); }
.topics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 32px; margin: 0; padding: 0; list-style: none; }
.topics li { padding-block: 4px; }
.page-schedule .intro { max-width: none; }
.schedule-hours { white-space: nowrap; font-variant-numeric: tabular-nums; }
.schedule-table { width: 100%; table-layout: fixed; border-collapse: collapse; margin-block: 32px 40px; text-align: left; }
.schedule-time-column { width: 240px; }
.schedule-table th, .schedule-table td { padding: 24px 40px; vertical-align: top; }
.schedule-table thead th { color: var(--muted); font-size: var(--small); line-height: 24px; font-weight: 500; }
.schedule-table th[scope="row"] { color: var(--teal); font-size: 18px; line-height: 28px; font-weight: 500; font-variant-numeric: tabular-nums; white-space: nowrap; }
.schedule-table td { font-size: 20px; line-height: 28px; word-break: keep-all; overflow-wrap: anywhere; text-wrap: pretty; }
.schedule-table tbody tr:not(.schedule-period) > * { border-bottom: 1px solid var(--panel); }
.schedule-table .schedule-period th { padding-block: 40px 16px; }
.schedule-table .schedule-period h2 { color: var(--accent); font-size: 24px; line-height: 32px; }
.schedule-table .schedule-break > tr > * { background: var(--panel); }
.archive-page { display: grid; grid-template-columns: 1.4fr 1fr; align-items: center; gap: 56px; padding-block: 72px; }
.archive-page h1 { margin-bottom: 32px; }
.archive-page .text-link { margin-top: 24px; }
.archive-mark { display: flex; align-items: center; justify-content: center; background: var(--panel); padding: 48px; }
.mascot { width: 100%; max-width: 340px; }
@media (prefers-reduced-motion: no-preference) {
  .conference-hero h1 { animation: settle 750ms var(--ease) both; }
  .page-heading, .archive-page { animation: arrive 500ms var(--ease) both; }
  .is-revealed { animation: reveal 650ms var(--ease); }
  .signal-art.is-revealed { animation: signal-in 850ms var(--ease); }
  @keyframes settle { from { opacity: .6; transform: translateY(16px) scale(.985); } to { opacity: 1; transform: none; } }
  @keyframes arrive { from { opacity: .5; transform: translateY(12px); } to { opacity: 1; transform: none; } }
  @keyframes reveal { from { opacity: .45; transform: translateY(18px); } to { opacity: 1; transform: none; } }
  @keyframes signal-in { from { opacity: .45; transform: scale(.96); } to { opacity: 1; transform: none; } }
}
@media (max-width: 1050px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: 12px; padding-block: 22px; }
  nav { width: 100%; justify-content: space-between; }
  .event-details { padding: 40px 32px; }
  .meetup-story { gap: 32px; }
  .topic-index { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sponsor-gold { grid-template-columns: 1fr 3fr; padding: 32px; }
  .sponsor-secondary .sponsor-tier { align-items: flex-start; flex-direction: column; gap: 16px; }
  .topics { grid-template-columns: 1fr; }
}
@media (max-width: 650px) {
  :root { --body: 17px; --display: clamp(37px, 10.6vw, 66px); --detail: 22px; --section-space: 80px; }
  .site-header { padding-block: 20px 16px; }
  nav { column-gap: 12px; row-gap: 0; }
  .conference-hero { padding-block: 40px 40px; }
  .conference-hero::before { background-position: 57% center; background-size: auto 125%; }
  .conference-hero h1 { font-size: clamp(42px, 11vw, 72px); letter-spacing: -.065em; }
  .event-details { padding: 32px 24px 24px; }
  .event-details h2 { margin-bottom: 32px; }
  .event-facts { grid-template-columns: 1fr; gap: 40px; }
  .event-facts dt { font-size: 24px; line-height: 32px; }
  .detail-value { font-size: 20px; line-height: 28px; }
  .detail-secondary { margin-top: 12px; font-size: 16px; }
  .venue-address { margin-top: 12px; }
  .meetup-story { gap: 40px; }
  .meetup-story h2 { font-size: 24px; line-height: 32px; }
  .story-points { margin-block: 24px; }
  .signal-art { width: min(100%, 220px); padding: 8px; }
  .signal-art img { max-width: 280px; }
  .topic-section > h2 { margin-bottom: 32px; }
  .topic-index li { min-height: 120px; padding: 16px 12px; font-size: 18px; line-height: 28px; }
  .program-note { margin-top: 24px; }
  .program-note > div { gap: 28px; }
  .sponsors-section { padding-bottom: 40px; }
  .sponsors-section > h2 { margin-bottom: 32px; }
  .sponsor-gold { grid-template-columns: 1fr; gap: 24px; padding: 24px; }
  .sponsor-gold h3 { font-size: 24px; }
  .sponsor-link { min-height: 96px; gap: 16px; }
  .sponsor-arrow { font-size: 24px; }
  .sponsor-secondary { gap: 16px; margin-top: 16px; }
  .sponsor-tier { padding: 24px; }
  .sponsor-secondary .sponsor-tier { padding: 24px 16px; }
  .sponsor-secondary h3 { font-size: 20px; }
  .site-footer { gap: 16px; padding-block: 28px; font-size: 14px; }
  .page-heading { padding-block: 36px 40px; }
  .page-heading h1 { margin-bottom: 24px; }
  .content-split { grid-template-columns: 1fr; gap: 24px; padding-block: 24px; }
  .content-split:last-child { padding-bottom: 40px; }
  .page-about .page-heading, .page-schedule .page-heading { grid-template-columns: 1fr; gap: 24px; padding: 28px 24px; }
  .page-about .content-split { padding: 32px 24px; }
  .schedule-table { margin-block: 24px; }
  .schedule-time-column { width: 136px; }
  .schedule-table th, .schedule-table td { padding: 16px 8px; }
  .schedule-table th[scope="row"] { font-size: 16px; line-height: 28px; }
  .schedule-table td { font-size: 18px; }
  .schedule-table .schedule-period th { padding-block: 32px 12px; }
  .topics { gap: 8px; }
  .archive-page { grid-template-columns: 1fr; gap: 36px; padding-block: 36px; }
  .archive-mark { padding: 32px; }
  .archive-mark .mascot { max-width: 220px; }
}
@media (max-width: 360px) {
  nav { column-gap: 4px; }
  nav a { font-size: 14px; }
  .conference-hero h1 { font-size: 36px; }
  .topic-index { grid-template-columns: 1fr; }
  .topic-index li { min-height: 88px; padding: 20px; font-size: 18px; line-height: 28px; }
  .venue-address { gap: 4px; }
}
@container (max-width: 340px) {
  .venue-address { gap: 4px; font-size: 16px; }
}
@container (max-width: 300px) {
  .map-link { gap: 2px; }
  .map-link span { font-size: 14px; }
}
@container (max-width: 286px) {
  .venue-address { font-size: 14px; }
}
@container (max-width: 260px) {
  .venue-address { font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}