@charset "utf-8";

:root {
  color-scheme: light;
  --paper: #f5f7f4;
  --paper-strong: #fcfdfa;
  --ink: #17201e;
  --muted: #5b6964;
  --line: #cdd8d2;
  --line-strong: #aebeb6;
  --band: #e9efeb;
  --accent: #a24634;
  --quote: #1d5559;
  --teal: #2f6f73;
  --teal-deep: #1d5559;
  --ink-soft: #34413d;
  --line-soft: #dfe6e2;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

html {
  background: var(--paper);
  color: var(--ink);
}

body.qs-inner {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 6%, rgba(207, 224, 216, 0.42), transparent 28rem),
    linear-gradient(180deg, var(--paper-strong) 0, var(--paper) 44rem);
  font: 16px/1.65 var(--sans);
}

body.qs-inner .site-header {
  min-height: 64px;
  gap: 24px;
  padding: 10px max(22px, calc((100vw - 1080px) / 2));
  border-bottom: 1px solid rgba(205, 216, 210, 0.82);
  background: rgba(248, 250, 247, 0.88);
  backdrop-filter: blur(16px) saturate(110%);
}

body.qs-inner .brand {
  gap: 12px;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 760;
  letter-spacing: 0.01em;
}

body.qs-inner .q-mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  padding-bottom: 1px;
  border: 1px solid var(--line);
  border-radius: 23%;
  background: var(--paper);
  color: var(--teal-deep);
  font: 600 1.22rem/1 var(--serif);
}

body.qs-inner .site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 14px;
}

body.qs-inner .site-header nav a {
  position: relative;
  padding: 8px 0;
  border-radius: 0;
  color: var(--muted);
  background: none;
  font-size: 0.8rem;
  font-weight: 680;
}

body.qs-inner .site-header nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 4px;
  height: 1px;
  background: var(--teal);
  transition: right 160ms ease;
}

body.qs-inner .site-header nav a:hover,
body.qs-inner .site-header nav a:focus-visible,
body.qs-inner .site-header nav a[aria-current="page"] {
  color: var(--teal-deep);
  background: none;
  outline: none;
}

body.qs-inner .site-header nav a:hover::after,
body.qs-inner .site-header nav a:focus-visible::after,
body.qs-inner .site-header nav a[aria-current="page"]::after {
  right: 0;
}

body.qs-inner .hero,
body.qs-inner .section {
  width: min(1080px, calc(100% - 44px));
}

body.qs-inner .hero {
  min-height: 455px;
  display: grid;
  align-items: center;
  padding: clamp(62px, 10vh, 108px) 0 clamp(58px, 9vh, 94px);
}

body.qs-inner .hero-text {
  max-width: 820px;
}

body.qs-inner .eyebrow {
  margin-bottom: 16px;
  color: var(--teal);
  font-size: 0.7rem;
  font-weight: 760;
  letter-spacing: 0.15em;
}

body.qs-draft .eyebrow {
  color: var(--accent);
}

body.qs-inner h1,
body.qs-inner h2,
body.qs-inner h3 {
  font-family: var(--serif);
}

body.qs-inner h1 {
  max-width: 15em;
  margin-bottom: 22px;
  color: var(--ink);
  font-size: clamp(3rem, 6.4vw, 5.35rem);
  font-weight: 580;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

body.qs-inner .subtitle-line {
  max-width: 25em;
  margin-top: 15px;
  color: var(--teal-deep);
  font-size: 0.42em;
  font-style: italic;
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.24;
}

body.qs-inner .lede {
  max-width: 44em;
  color: var(--ink-soft);
  font-size: clamp(1.03rem, 1.35vw, 1.15rem);
  line-height: 1.76;
}

body.qs-inner .actions {
  gap: 10px 12px;
  margin-top: 30px;
}

body.qs-inner .button {
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--teal-deep);
  border-radius: 999px;
  color: #fff;
  background: var(--teal-deep);
  font-size: 0.86rem;
  font-weight: 700;
  box-shadow: none;
}

body.qs-inner .button:hover,
body.qs-inner .button:focus-visible {
  border-color: var(--teal);
  color: #fff;
  background: var(--teal);
  outline: none;
}

body.qs-inner .button.secondary {
  border-color: var(--line-strong);
  color: var(--teal-deep);
  background: rgba(252, 253, 250, 0.52);
}

body.qs-inner .button.secondary:hover,
body.qs-inner .button.secondary:focus-visible {
  border-color: var(--teal);
  color: var(--teal-deep);
  background: var(--band);
}

body.qs-inner .section {
  padding: clamp(56px, 8vh, 86px) 0;
  border-top: 1px solid var(--line-soft);
}

body.qs-inner .section h2 {
  margin: 0 0 14px;
  color: var(--ink);
  font-size: clamp(1.75rem, 3.6vw, 2.65rem);
  font-weight: 570;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

body.qs-inner .section-lede,
body.qs-inner .draft-note {
  color: var(--muted);
}

body.qs-inner .research-prose,
body.qs-inner .draft-body {
  max-width: 48em;
}

body.qs-inner .research-prose p,
body.qs-inner .draft-body p {
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 1.08rem;
  line-height: 1.82;
}

body.qs-inner .abstract {
  max-width: 49em;
  margin-top: 40px;
  padding: clamp(25px, 4vw, 38px);
  border: 1px solid var(--line);
  border-radius: 3px;
  background: rgba(252, 253, 250, 0.72);
  box-shadow: 0 20px 56px rgba(51, 83, 69, 0.05);
}

body.qs-inner .abstract-tag,
body.qs-inner .work-tag,
body.qs-inner .sec-num,
body.qs-inner .passage-number {
  color: var(--teal);
}

body.qs-inner .abstract p {
  color: var(--ink-soft);
  font-size: 1.04rem;
  line-height: 1.78;
}

body.qs-inner .abstract-fold .fold-hint,
body.qs-inner details summary {
  color: var(--teal-deep);
}

body.qs-inner .abstract-fold[open] summary {
  border-color: var(--line-soft);
}

body.qs-inner .toc {
  max-width: 52em;
  gap: 0 34px;
}

body.qs-inner .toc a {
  padding: 11px 2px;
  border-bottom: 1px solid var(--line-soft);
  border-radius: 0;
  color: var(--ink-soft);
}

body.qs-inner .toc a:hover,
body.qs-inner .toc a:focus-visible {
  color: var(--teal-deep);
  background: none;
  outline: none;
}

body.qs-inner .draft-section h2 {
  gap: 14px;
}

body.qs-inner .draft-section .sec-num {
  min-width: 1.7em;
  font-size: 0.72em;
  font-weight: 650;
}

body.qs-inner .work-list {
  margin-top: 25px;
  border-width: 1px 0 0;
  border-radius: 0;
  background: transparent;
}

body.qs-inner .work-row {
  grid-template-columns: 104px minmax(0, 1fr) 34px;
  padding: 24px 4px;
  border-color: var(--line-soft);
  background: transparent;
}

body.qs-inner .work-row:hover,
body.qs-inner .work-row:focus-visible {
  background: rgba(252, 253, 250, 0.55);
  outline: none;
}

body.qs-inner .work-body {
  color: var(--muted);
}

body.qs-inner .work-body strong {
  color: var(--ink);
  font-size: 1.2rem;
}

body.qs-inner .work-arrow {
  color: var(--line-strong);
}

body.qs-inner .work-row:hover .work-arrow,
body.qs-inner .work-row:focus-visible .work-arrow {
  color: var(--teal);
}

body.qs-inner .throughline {
  border-color: var(--line);
  border-radius: 3px;
  background: rgba(252, 253, 250, 0.62);
}

body.qs-inner .throughline div {
  border-color: var(--line-soft);
}

body.qs-inner .throughline strong {
  color: var(--teal-deep);
}

body.qs-inner .passage-list {
  gap: 0;
  border-top: 1px solid var(--line);
}

body.qs-inner .passage {
  padding: clamp(28px, 4vw, 42px) 0;
  border-width: 0 0 1px;
  border-color: var(--line);
  border-radius: 0;
  background: transparent;
}

body.qs-inner .passage-head {
  margin-bottom: 16px;
}

body.qs-inner .source-link,
body.qs-inner a.src-title {
  color: var(--teal-deep);
}

body.qs-inner .claim {
  border-color: var(--accent);
  color: var(--ink-soft);
}

body.qs-inner blockquote {
  border-color: var(--teal);
  border-radius: 0 3px 3px 0;
  color: var(--ink-soft);
  background: rgba(222, 233, 227, 0.62);
}

body.qs-inner .source-list li {
  border-color: var(--line-soft);
}

body.qs-inner .source-list li::before {
  color: var(--teal);
}

body.qs-inner footer {
  width: 100%;
  margin-top: 28px;
  padding: 30px max(22px, calc((100vw - 1080px) / 2));
  border-color: var(--line-soft);
  color: var(--muted);
  background: rgba(233, 239, 235, 0.42);
}

body.qs-inner footer a {
  color: var(--teal-deep);
}

/* Full thesis reader: same identity, denser reading instrument. */
body.qs-reader {
  --bg: #13211f;
  --panel: #192925;
  --panel-2: #20312d;
  --text: #edf3ef;
  --muted: #a7b8b1;
  --line: #36504a;
  --accent: #8be7ff;
  --purple: #c6b6f5;
  --green: #82c49a;
  --pale-green: #cae8d2;
  --gold: #d8b56a;
  --rose: #d98576;
  --shadow: 0 18px 56px rgba(4, 17, 14, 0.28);
  background: var(--bg);
  font-family: var(--sans);
}

body.qs-reader.light {
  color-scheme: light;
  --bg: #f5f7f4;
  --panel: #fcfdfa;
  --panel-2: #e9efeb;
  --text: #17201e;
  --muted: #5b6964;
  --line: #cdd8d2;
  --accent: #2f6f73;
  --purple: #74688d;
  --green: #3f7d59;
  --pale-green: #527966;
  --gold: #a16f31;
  --rose: #a24634;
  --shadow: 0 18px 48px rgba(51, 83, 69, 0.09);
  background:
    radial-gradient(circle at 82% 4%, rgba(207, 224, 216, 0.42), transparent 30rem),
    var(--bg);
}

body.qs-reader .progress {
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--green));
}

body.qs-reader .rail,
body.qs-reader.light .rail {
  width: 270px;
  padding: 24px 18px;
  border-color: var(--line);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
}

body.qs-reader .rail .brand {
  width: 38px;
  height: 38px;
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-radius: 23%;
  color: var(--accent);
  background: var(--panel);
  font: 600 1.32rem/1 var(--serif);
}

body.qs-reader .rail nav {
  gap: 2px;
}

body.qs-reader .rail nav a {
  padding: 10px 8px;
  border-radius: 3px;
}

body.qs-reader .rail nav a:hover,
body.qs-reader .rail nav a:focus-visible {
  border-color: var(--line);
  color: var(--text);
  background: var(--panel);
  outline: none;
}

body.qs-reader main {
  margin-left: 270px;
}

body.qs-reader .hero {
  min-height: 76vh;
  padding-top: 80px;
  border-color: var(--line);
}

body.qs-reader .hero h1,
body.qs-reader .section-heading h2,
body.qs-reader .chapter-heading h2 {
  font-family: var(--serif);
  font-weight: 570;
  letter-spacing: -0.035em;
}

body.qs-reader .hero h1 {
  max-width: 9em;
  font-size: clamp(3.4rem, 6.8vw, 6.3rem);
}

body.qs-reader .eyeline {
  color: var(--accent);
  letter-spacing: 0.13em;
}

body.qs-reader .subtitle {
  color: var(--accent);
  font-family: var(--serif);
  font-style: italic;
}

body.qs-reader .hero-text {
  color: var(--muted);
  line-height: 1.75;
}

body.qs-reader .hero-actions a,
body.qs-reader button,
body.qs-reader .filter,
body.qs-reader input[type="search"] {
  border-radius: 999px;
}

body.qs-reader input[type="search"] {
  border-radius: 3px;
}

body.qs-reader .hero-panel,
body.qs-reader .metric-grid div,
body.qs-reader .chapter-card,
body.qs-reader .chain-node,
body.qs-reader .mining-card,
body.qs-reader .page,
body.qs-reader .reader-details,
body.qs-reader .subchapter-panel {
  border-radius: 3px;
}

body.qs-reader .hero-panel {
  box-shadow: var(--shadow);
}

body.qs-reader .controls,
body.qs-reader.light .controls {
  border-color: var(--line);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
}

body.qs-reader .section-block,
body.qs-reader .mining-lab,
body.qs-reader .notes {
  border-color: var(--line);
}

body.qs-reader .section-heading span,
body.qs-reader .chapter-label,
body.qs-reader .chapter-heading > span,
body.qs-reader .where {
  color: var(--accent) !important;
}

body.qs-reader .toc-row,
body.qs-reader .chapter-card,
body.qs-reader .page,
body.qs-reader .mining-card,
body.qs-reader .chain-node {
  background: color-mix(in srgb, var(--panel) 84%, transparent);
}

body.qs-reader .content-block,
body.qs-reader .page-text {
  font-family: var(--serif);
  line-height: 1.76;
}

@media (max-width: 760px) {
  body.qs-inner .site-header {
    position: static;
  }

  body.qs-inner .site-header nav {
    width: 100%;
    margin-left: 0;
  }

  body.qs-inner .hero,
  body.qs-inner .section {
    width: min(100% - 32px, 1080px);
  }

  body.qs-inner .hero {
    min-height: 0;
    padding-top: 54px;
  }

  body.qs-inner h1 {
    font-size: clamp(2.75rem, 13vw, 4.4rem);
  }

  body.qs-inner .actions {
    display: flex;
  }

  body.qs-inner .work-row {
    grid-template-columns: minmax(0, 1fr) 30px;
  }

  body.qs-inner .work-tag {
    grid-column: 1 / -1;
  }
}

@media (max-width: 980px) {
  body.qs-reader .rail {
    width: auto;
  }

  body.qs-reader main {
    margin-left: 0;
  }

}

@media print {
  body.qs-inner {
    background: #fff;
  }

}