@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/assets/fonts/IBMPlexMono-normal.woff2) format('woff2');
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/assets/fonts/IBMPlexMono-normal.woff2) format('woff2');
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-stretch: 100%;
  font-display: swap;
  src: url(/assets/fonts/IBMPlexSans-normal.woff2) format('woff2');
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-stretch: 100%;
  font-display: swap;
  src: url(/assets/fonts/IBMPlexSans-normal.woff2) format('woff2');
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 600;
  font-stretch: 100%;
  font-display: swap;
  src: url(/assets/fonts/IBMPlexSans-normal.woff2) format('woff2');
}
@font-face {
  font-family: 'Newsreader';
  font-style: italic;
  font-weight: 300;
  font-display: swap;
  src: url(/assets/fonts/Newsreader-italic.woff2) format('woff2');
}
@font-face {
  font-family: 'Newsreader';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url(/assets/fonts/Newsreader-italic.woff2) format('woff2');
}
@font-face {
  font-family: 'Newsreader';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url(/assets/fonts/Newsreader-normal.woff2) format('woff2');
}
@font-face {
  font-family: 'Newsreader';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/assets/fonts/Newsreader-normal.woff2) format('woff2');
}

/* Layout: one left-aligned reading column on a wide quiet field; the landscape is the only full-bleed object. */
:root {
  --paper: #F3F5F6;
  --surface: #FFFFFF;
  --ink: #0F1A22;
  --muted: #56636D;
  --faint: #5E6A73;
  --rule: #D8DEE2;
  --accent: #1E46C8;
  --accent-soft: #E3E9FA;
  --ramp-lo: #F3F5F6;
  --ramp-hi: #172C63;
  --void: #E9EDEF;
  --est: #186447; --est-bg: #E2F1EA;
  --pre: #6E4D00; --pre-bg: #F6EDD7;
  --open: #48545D; --open-bg: #E8ECEF;
  --font-display: "Newsreader", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --font-body: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --step--1: 0.8125rem; --step-0: 1rem; --step-1: 1.1875rem; --step-2: 1.5rem;
  --step-3: 2.125rem; --step-4: clamp(2.25rem, 1.4rem + 3.4vw, 3.75rem);
  --measure: 40rem;
  --wide: 72rem;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0B1116; --surface: #111A21; --ink: #E4EAEE; --muted: #9AA6AF; --faint: #8E9AA4;
    --rule: #22303A; --accent: #8BA8FF; --accent-soft: #18233F;
    --ramp-lo: #111A21; --ramp-hi: #9DB5FF; --void: #0D151B;
    --est: #6FD0A3; --est-bg: #12291F; --pre: #E6BC5C; --pre-bg: #2A2312; --open: #9AA6AF; --open-bg: #1A242C;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0B1116; --surface: #111A21; --ink: #E4EAEE; --muted: #9AA6AF; --faint: #8E9AA4;
  --rule: #22303A; --accent: #8BA8FF; --accent-soft: #18233F;
  --ramp-lo: #111A21; --ramp-hi: #9DB5FF; --void: #0D151B;
  --est: #6FD0A3; --est-bg: #12291F; --pre: #E6BC5C; --pre-bg: #2A2312; --open: #9AA6AF; --open-bg: #1A242C;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--font-body); font-size: var(--step-0); line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
.wrap { max-width: var(--wide); margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2.5rem); }

/* Header */
.bar {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.2) blur(10px); -webkit-backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.bar .wrap { display: flex; align-items: center; gap: 1.5rem; min-height: 3.75rem; flex-wrap: wrap; }
.mark { display: flex; align-items: baseline; gap: 0.6rem; text-decoration: none; color: var(--ink); }
.mark b { font-family: var(--font-mono); font-weight: 500; font-size: 0.95rem; letter-spacing: 0.08em; }
.mark span { font-size: var(--step--1); color: var(--muted); }
.menu-btn { display: none; margin-left: auto; font: inherit; font-size: var(--step--1); background: none; border: 1px solid var(--rule); color: var(--ink); padding: 0.35rem 0.7rem; border-radius: 4px; cursor: pointer; }
nav.primary { margin-left: auto; }
nav.primary ul { display: flex; gap: 0.25rem; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
nav.primary a {
  display: block; padding: 0.4rem 0.65rem; font-size: var(--step--1); color: var(--muted);
  text-decoration: none; border-radius: 4px;
}
nav.primary a:hover { color: var(--ink); background: var(--void); }
nav.primary a[aria-current="page"] { color: var(--ink); box-shadow: inset 0 -2px 0 var(--accent); border-radius: 0; }
@media (max-width: 54rem) {
  .menu-btn { display: inline-block; }
  nav.primary { flex-basis: 100%; margin-left: 0; display: none; padding-bottom: 0.75rem; }
  nav.primary.open { display: block; }
  nav.primary ul { flex-direction: column; }
}

/* Pages */
main { padding-block: clamp(2.5rem, 6vw, 5rem) 4rem; }
section.page { display: grid; gap: clamp(2.5rem, 5vw, 4.5rem); }
section.page[hidden] { display: none; }
.eyebrow { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); margin: 0 0 1rem; }
h1, h2, h3 { text-wrap: balance; margin: 0; }
h1 { font-family: var(--font-display); font-weight: 300; font-size: var(--step-4); line-height: 1.06; letter-spacing: -0.015em; max-width: 18ch; }
h1 em { font-style: italic; }
h2 { font-family: var(--font-display); font-weight: 400; font-size: var(--step-3); line-height: 1.15; letter-spacing: -0.01em; max-width: 24ch; }
h3, h2.t3 { font-family: var(--font-body); font-size: var(--step-1); font-weight: 600; line-height: 1.3; letter-spacing: 0; max-width: none; }
p { margin: 0; }
.lede { font-size: var(--step-1); line-height: 1.55; color: var(--muted); max-width: var(--measure); }
.prose { display: grid; gap: 1.1rem; max-width: var(--measure); }
.prose p { color: var(--ink); }
.muted { color: var(--muted); }
.small { font-size: var(--step--1); }
.mono { font-family: var(--font-mono); font-size: 0.85em; }
.block { display: grid; gap: 1.5rem; }
.split { display: grid; grid-template-columns: minmax(0, 15rem) minmax(0, 1fr); gap: clamp(1.5rem, 4vw, 4rem); padding-top: 2rem; border-top: 1px solid var(--rule); }
.split > * { min-width: 0; }
@media (max-width: 44rem) { .split { grid-template-columns: minmax(0, 1fr); } }

/* Home: thesis */
.thesis { display: grid; gap: 1.75rem; }
.four { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--rule); }
.four li { padding: 1rem 1rem 0 0; display: grid; gap: 0.35rem; align-content: start; }
.four li + li { padding-left: 1rem; border-left: 1px solid var(--rule); }
.four .q { font-family: var(--font-display); font-size: var(--step-2); line-height: 1.2; }
.four .t { font-size: var(--step--1); color: var(--muted); }
.four li.now .q::after { content: " \2022"; color: var(--accent); }
@media (max-width: 52rem) { .four { grid-template-columns: repeat(2, minmax(0, 1fr)); } .four li:nth-child(3) { padding-left: 0; border-left: 0; } .four li { padding-bottom: 1rem; } }
@media (max-width: 30rem) { .four { grid-template-columns: minmax(0, 1fr); } .four li + li { padding-left: 0; border-left: 0; border-top: 1px solid var(--rule); } }
.ctas { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.7rem 1.1rem; border-radius: 4px;
  font: 500 var(--step--1)/1 var(--font-body); text-decoration: none; cursor: pointer;
  border: 1px solid var(--ink); color: var(--paper); background: var(--ink);
}
.btn:hover { background: var(--accent); border-color: var(--accent); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--rule); }
.btn.ghost:hover { border-color: var(--ink); background: transparent; }

/* Landscape figure */
.figure { display: grid; gap: 1rem; }
.landscape {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 17rem); gap: 0;
  border: 1px solid var(--rule); background: var(--surface); border-radius: 6px; overflow: hidden;
}
.landscape .stage { position: relative; min-width: 0; }
.landscape canvas { display: block; width: 100%; height: auto; touch-action: none; cursor: crosshair; }
.landscape .panel { border-left: 1px solid var(--rule); padding: 1.25rem; display: grid; gap: 1.1rem; align-content: start; }
@media (max-width: 48rem) { .landscape { grid-template-columns: minmax(0, 1fr); } .landscape .panel { border-left: 0; border-top: 1px solid var(--rule); } }
.readout { display: grid; gap: 0.15rem; }
.readout .k { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.readout .v { font-family: var(--font-display); font-size: 2.6rem; line-height: 1; font-variant-numeric: tabular-nums; }
.readout .v small { font-family: var(--font-body); font-size: var(--step--1); color: var(--muted); margin-left: 0.25rem; }
dl.pos { display: grid; grid-template-columns: auto 1fr; gap: 0.25rem 0.75rem; margin: 0; font-size: var(--step--1); }
dl.pos dt { color: var(--muted); }
dl.pos dd { margin: 0; font-family: var(--font-mono); font-variant-numeric: tabular-nums; text-align: right; }
.toggle { display: grid; gap: 0.5rem; }
.toggle button {
  font: 500 var(--step--1)/1.2 var(--font-body); text-align: left; cursor: pointer; padding: 0.6rem 0.75rem;
  border: 1px solid var(--rule); background: var(--paper); color: var(--ink); border-radius: 4px;
}
.toggle button[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); }
.shift-note { font-size: var(--step--1); color: var(--muted); min-height: 2.6em; }
.shift-note b { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
.legend { display: grid; gap: 0.35rem; }
.legend .ramp { height: 8px; border-radius: 2px; }
.legend .ticks { display: grid; grid-template-columns: 0.5fr repeat(6, 1fr) 0.5fr; font-family: var(--font-mono); font-size: 0.66rem; color: var(--muted); }
.legend .ticks span { text-align: center; }
figcaption { font-size: var(--step--1); color: var(--muted); max-width: 52rem; }
.hint { font-size: var(--step--1); color: var(--faint); }

/* Status chips */
.chip { display: inline-flex; align-items: center; gap: 0.35rem; font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.2rem 0.5rem; border-radius: 3px; white-space: nowrap; }
.chip::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.chip.est { color: var(--est); background: var(--est-bg); }
.chip.pre { color: var(--pre); background: var(--pre-bg); }
.chip.open { color: var(--open); background: var(--open-bg); }
.status-key { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; align-items: center; font-size: var(--step--1); color: var(--muted); }

/* Lists of findings / items */
.items { display: grid; gap: 0; border-top: 1px solid var(--rule); }
.item { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0.5rem 1.5rem; padding: 1.25rem 0; border-bottom: 1px solid var(--rule); }
.item > div { display: grid; gap: 0.35rem; min-width: 0; }
.item p { color: var(--muted); max-width: var(--measure); }
@media (max-width: 36rem) { .item { grid-template-columns: minmax(0, 1fr); } .item .chip { justify-self: start; grid-row: 1; } }

/* Sequence (real process order) */
.loop { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--ink); counter-reset: step; }
.loop li { counter-increment: step; padding: 0.9rem 0.75rem 0 0; display: grid; gap: 0.3rem; align-content: start; }
.loop li::before { content: counter(step); font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); }
.loop b { font-weight: 600; }
.loop span { font-size: var(--step--1); color: var(--muted); }
@media (max-width: 52rem) { .loop { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 1.25rem; } }
@media (max-width: 30rem) { .loop { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* Tables */
.table-wrap { overflow-x: auto; border-top: 1px solid var(--ink); }
table { border-collapse: collapse; width: 100%; font-size: var(--step--1); font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 0.6rem 1rem 0.6rem 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-weight: 500; color: var(--muted); font-size: 0.75rem; letter-spacing: 0.04em; }
td.num, th.num { text-align: right; font-family: var(--font-mono); white-space: nowrap; }
td .ci { color: var(--faint); }
td.agree { color: var(--est); }

/* Math */
.eq { font-family: var(--font-display); font-size: var(--step-2); line-height: 1.4; padding: 1.25rem 0; border-block: 1px solid var(--rule); overflow-x: auto; white-space: nowrap; }
.eq i { font-style: italic; }
.eq sub, .eq sup { font-size: 0.6em; }
.problems { counter-reset: prob; display: grid; gap: 0; border-top: 1px solid var(--rule); }
.problems article { counter-increment: prob; display: grid; grid-template-columns: 2.5rem minmax(0, 1fr); gap: 1rem; padding: 1.4rem 0; border-bottom: 1px solid var(--rule); }
.problems article::before { content: "P" counter(prob); font-family: var(--font-mono); font-size: var(--step--1); color: var(--accent); padding-top: 0.15rem; }
.problems article > div { display: grid; gap: 0.45rem; min-width: 0; }
.problems p { color: var(--muted); max-width: var(--measure); }

/* Collaborate */
.roles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--rule); }
.roles > div { padding: 1.4rem 1.5rem 1.4rem 0; border-bottom: 1px solid var(--rule); display: grid; gap: 0.45rem; align-content: start; }
.roles > div:nth-child(even) { padding-left: 1.5rem; border-left: 1px solid var(--rule); }
.roles p { color: var(--muted); }
@media (max-width: 44rem) { .roles { grid-template-columns: minmax(0, 1fr); } .roles > div:nth-child(even) { padding-left: 0; border-left: 0; } }
.contact { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; padding: 1.5rem; border: 1px solid var(--rule); border-radius: 6px; background: var(--surface); }
.contact code { font-family: var(--font-mono); font-size: var(--step-0); user-select: all; }

/* Footer */
footer { border-top: 1px solid var(--rule); padding-block: 2rem 3rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 1rem 2rem; justify-content: space-between; font-size: var(--step--1); color: var(--muted); }
footer nav { display: flex; flex-wrap: wrap; gap: 1rem; }
footer a { color: var(--muted); }

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