:root {
  --bg: #f7f2e7;
  --surface: #fffcf5;
  --ink: #19352e;
  --muted: #52665e;
  --line: #c9d2c7;
  --accent: #c55332;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --display: Georgia, "Times New Roman", serif;
  --mono: "SFMono-Regular", Consolas, monospace;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.5; }
a { color: inherit; }
button, input { font: inherit; }
.shell { width: min(1100px, calc(100% - 40px)); margin-inline: auto; }

.topbar { height: 66px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; border-bottom: 1px solid var(--line); }
.wordmark { font-size: 1.16rem; font-weight: 800; letter-spacing: -.055em; text-decoration: none; }
.signal { color: var(--accent); }
.coordinates { margin: 0; color: var(--muted); font: .68rem/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.menu-button, .back-link { justify-self: end; border: 0; border-bottom: 1px solid currentColor; background: transparent; padding: 4px 0; cursor: pointer; font: .68rem/1 var(--mono); text-transform: uppercase; text-decoration: none; }
.site-menu { position: fixed; z-index: 10; top: 66px; right: max(20px, calc((100vw - 1100px) / 2)); width: min(360px, calc(100% - 40px)); border: 1px solid var(--ink); background: var(--surface); box-shadow: 7px 7px 0 var(--ink); }
.site-menu a { display: grid; grid-template-columns: 32px 1fr auto; gap: 10px; padding: 16px 18px; border-bottom: 1px solid var(--line); text-decoration: none; }
.site-menu a:last-child { border-bottom: 0; }
.site-menu span, .site-menu small { color: var(--muted); font: .64rem/1.5 var(--mono); text-transform: uppercase; }

.hero { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(230px, .65fr); align-items: end; gap: 52px; margin-top: 22px; padding: 50px 52px 43px; background: var(--ink); color: var(--surface); border-radius: 3px; overflow: hidden; position: relative; }
.hero::after { content: "?"; position: absolute; right: 10%; top: -73px; color: rgba(247,242,231,.055); font: 390px/1 var(--display); pointer-events: none; }
.hero-main, .hero-note { position: relative; z-index: 1; }
.eyebrow { margin: 0 0 19px; color: var(--accent); font: .7rem/1.25 var(--mono); letter-spacing: .1em; text-transform: uppercase; }
.hero .eyebrow { color: #e2c976; }
.hero .eyebrow span { margin: 0 7px; }
.hero h1 { margin: 0; max-width: 730px; font: normal clamp(3.25rem, 5.7vw, 5.35rem)/.99 var(--display); letter-spacing: -.055em; }
.hero-period { color: #e2c976; }
.hero-note { padding-left: 19px; border-left: 1px solid rgba(255,252,245,.35); }
.hero-note-label { color: #e2c976; font: .67rem/1.4 var(--mono); text-transform: uppercase; letter-spacing: .09em; }
.hero-note p { margin: 12px 0 0; color: #f1efe4; font-size: 1.05rem; line-height: 1.55; }

.entrances { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; margin-bottom: 42px; }
.entrance { min-height: 222px; padding: 23px 27px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 3px; background: var(--surface); text-decoration: none; transition: border-color .15s, transform .15s, background .15s; }
.entrance-research { background: #efe3bd; }
.entrance-projects { background: #e0e9df; }
.entrance:hover { border-color: var(--ink); transform: translateY(-2px); }
.entrance-number { color: #52675d; font: .67rem/1 var(--mono); letter-spacing: .04em; text-transform: uppercase; }
.entrance h2 { margin: 0 0 10px; font: normal clamp(2.3rem, 4vw, 3.5rem)/1 var(--display); letter-spacing: -.055em; }
.entrance p { max-width: 450px; margin: 0 0 14px; color: #314b43; font-size: .95rem; line-height: 1.42; }
.text-link { width: fit-content; margin-top: auto; color: var(--accent); font: .68rem/1.5 var(--mono); text-transform: uppercase; border-bottom: 1px solid currentColor; }
.quiz-callout { margin: 14px auto 42px; padding: 15px 20px; display: flex; align-items: center; justify-content: space-between; gap: 18px; border: 1px solid var(--line); border-radius: 3px; background: var(--surface); }
.quiz-callout p { margin: 0; }
.quiz-callout span { margin-right: 15px; color: var(--accent); font: .67rem/1 var(--mono); text-transform: uppercase; }
.quiz-callout a { color: var(--accent); font: .68rem/1.4 var(--mono); text-transform: uppercase; text-underline-offset: 4px; white-space: nowrap; }
.footer { min-height: 68px; display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--line); color: var(--muted); font: .67rem/1 var(--mono); text-transform: uppercase; }
.footer a { text-underline-offset: 4px; }

.page-head { padding: 58px 0 48px; border-bottom: 1px solid var(--line); }
.page-head h1 { margin: 28px 0 0; font: normal clamp(3.5rem, 8vw, 6.7rem)/.96 var(--display); letter-spacing: -.055em; }
.page-intro { max-width: 680px; margin: 22px 0 0; color: var(--muted); font-size: 1.05rem; }
.project-head { padding: 34px 0 29px; }
.project-head h1 { margin-top: 17px; }
.project-head .page-intro { margin-top: 13px; }
.feature-paper { margin: 54px auto 72px; padding-top: 22px; border-top: 3px solid var(--accent); display: grid; grid-template-columns: .9fr 1fr; gap: 56px; }
.paper-kicker { color: var(--accent); font: .67rem/1.4 var(--mono); text-transform: uppercase; }
.feature-paper h2 { margin: 12px 0 18px; font: normal clamp(2.25rem, 4vw, 3.75rem)/1.03 var(--display); letter-spacing: -.04em; }
.paper-meta { color: var(--muted); font: .68rem/1.5 var(--mono); }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 22px 0; border: 1px solid var(--line); background: var(--line); }
.stat { padding: 13px; background: var(--surface); }
.stat strong { display: block; font-size: 1.3rem; }
.stat span { color: var(--muted); font: .58rem/1.2 var(--mono); text-transform: uppercase; }
.abstract h3 { margin-top: 0; font: .67rem/1 var(--mono); text-transform: uppercase; }
.abstract p { color: #414650; font-size: .95rem; }
.button-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.button { display: inline-flex; align-items: center; min-height: 40px; padding: 0 14px; border: 1px solid var(--ink); border-radius: 5px; background: var(--ink); color: white; text-decoration: none; font: .66rem/1 var(--mono); text-transform: uppercase; }
.button.secondary { background: transparent; color: var(--ink); }
.paper-list { padding-bottom: 72px; }
.paper-list > h2 { margin: 0 0 20px; font: normal clamp(2.1rem, 3.5vw, 3.25rem)/1.1 var(--display); letter-spacing: -.045em; }
.paper-row { display: grid; grid-template-columns: 44px 1fr .9fr auto; gap: 20px; align-items: start; padding: 21px 0; border-top: 1px solid var(--line); }
.paper-row:last-child { border-bottom: 1px solid var(--line); }
.paper-index { color: var(--muted); font: .65rem/1.4 var(--mono); }
.paper-row h3 { margin: 0; font-size: 1.25rem; line-height: 1.2; }
.paper-row p { margin: 0; color: var(--muted); font-size: .92rem; }
.paper-row a { color: var(--accent); font: .65rem/1.4 var(--mono); text-transform: uppercase; white-space: nowrap; text-underline-offset: 5px; }

.gate-wrap { min-height: calc(100vh - 146px); display: grid; place-items: center; padding: 40px 0; }
.gate { width: min(570px, 100%); padding: 42px; border: 1px solid var(--ink); border-radius: 3px; background: #e0e9df; box-shadow: 9px 9px 0 #d9c988; }
.gate-icon { display: none; }
.gate h1 { margin: 10px 0 14px; font: normal clamp(2.8rem, 6vw, 4.5rem)/1 var(--display); letter-spacing: -.05em; }
.gate p { max-width: 480px; color: var(--muted); }
.gate-form { display: grid; gap: 12px; margin-top: 26px; }
.gate-form label { color: var(--muted); font: .65rem/1 var(--mono); text-transform: uppercase; }
.gate-form input { width: 100%; min-height: 44px; margin-top: 7px; padding: 0 12px; border: 1px solid var(--line); border-radius: 3px; background: var(--surface); }
.gate-form button { min-height: 44px; border: 0; border-radius: 3px; background: var(--ink); color: white; cursor: not-allowed; }
.gate-note { margin: 12px 0 0; font: .64rem/1.4 var(--mono); }
.private-banner { padding: 9px 20px; background: #fff3c4; border-bottom: 1px solid #e6dcae; text-align: center; font: .64rem/1.4 var(--mono); text-transform: uppercase; }
.project-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; padding: 24px 0 72px; }
.project-card { min-height: 210px; padding: 23px; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 3px; background: var(--surface); text-decoration: none; transition: transform .15s, border-color .15s, background .15s; }
.project-card:hover { transform: translateY(-2px); border-color: var(--ink); background: #e0e9df; }
.project-card:focus-visible, .entrance:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.project-card h2 { margin: 25px 0 10px; font: normal clamp(1.9rem, 3vw, 2.8rem)/1 var(--display); letter-spacing: -.04em; }
.project-card p { margin: 0; color: var(--muted); font-size: .92rem; }
.project-card-link { width: fit-content; margin-top: auto; padding-top: 17px; color: var(--accent); font: .65rem/1.4 var(--mono); text-transform: uppercase; border-bottom: 1px solid currentColor; }
.project-card small { color: var(--accent); font: .62rem/1.4 var(--mono); text-transform: uppercase; }

@media (max-width: 1000px) and (min-width: 761px) {
  .project-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .shell { width: min(100% - 28px, 1080px); }
  .topbar { grid-template-columns: 1fr 1fr; }
  .coordinates { display: none; }
  .hero { margin-top: 14px; padding: 32px 26px; grid-template-columns: 1fr; gap: 25px; }
  .hero::after { right: -14px; top: 0; font-size: 270px; }
  .hero h1 { font-size: clamp(2.9rem, 12vw, 4.6rem); }
  .hero-note { padding-left: 14px; }
  .entrances, .feature-paper, .project-grid { grid-template-columns: 1fr; }
  .entrance { min-height: 0; padding: 21px; }
  .entrance h2 { font-size: clamp(2.45rem, 10vw, 3.25rem); }
  .project-card { min-height: 195px; }
  .quiz-callout { align-items: flex-start; flex-direction: column; gap: 9px; }
  .quiz-callout span { display: block; margin: 0 0 8px; }
  .feature-paper { gap: 32px; }
  .paper-row { grid-template-columns: 34px 1fr; }
  .paper-row p, .paper-row a { grid-column: 2; }
  .stat-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }