:root {
  --paper: #fcfbf8;
  --ink: #1d2320;
  --ink-soft: #5a625d;
  --hairline: #e7e4dc;
  --navy: #1d2d44;
  --navy-bg: #e8ecf3;
  --navy-line: #c2ccdd;
  --violet: #5b4b9e;
  --violet-bg: #ece8f7;
  --violet-line: #cdc4e8;
  --amber: #8f5a0d;
  --amber-bg: #fbf0db;
  --amber-line: #ebd5a8;
  --rose: #a83a56;
  --rose-bg: #fae8ed;
  --rose-line: #efc5d0;
  --blue: #1f5fa8;
  --blue-bg: #e6eef8;
  --blue-line: #bfd4ec;
  --green: #2e7d3a;
  --green-bg: #e7f3e8;
  --green-line: #bfdec4;
  --gray: #6b7370;
  --gray-bg: #efefec;
  --gray-line: #dbdad4;
  --serif: "Spectral", Georgia, serif;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", monospace;
  color-scheme: light;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: var(--navy);
  text-decoration-color: color-mix(in srgb, var(--navy) 40%, transparent);
  text-underline-offset: 3px;
}

a:hover { text-decoration-color: var(--navy); }
button { font: inherit; }

::selection {
  color: #fff;
  background: var(--navy);
}

:focus-visible {
  outline: 2px solid var(--navy);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 8px 10px;
  color: #fff;
  background: var(--navy);
  font: 12px/1.4 var(--mono);
  transform: translateY(-160%);
}

.skip-link:focus { transform: none; }

.topbar {
  position: sticky;
  z-index: 20;
  top: 0;
}

.spectrum {
  height: 5px;
  background: linear-gradient(90deg, var(--navy) 0 25%, var(--blue) 25% 45%, var(--violet) 45% 65%, var(--rose) 65% 82%, var(--amber) 82% 100%);
}

nav {
  border-bottom: 1px solid var(--hairline);
  background: color-mix(in srgb, var(--paper) 91%, transparent);
  backdrop-filter: blur(8px);
}

.nav-inner {
  width: min(1040px, calc(100% - 48px));
  min-height: 56px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  gap: 28px;
}

.nav-brand {
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  text-decoration: none;
}

.nav-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 21px;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-links::-webkit-scrollbar { display: none; }

.nav-links a {
  position: relative;
  flex: 0 0 auto;
  padding: 19px 0 17px;
  color: var(--ink-soft);
  font: 400 11px/1.4 var(--mono);
  letter-spacing: .025em;
  text-decoration: none;
  text-transform: lowercase;
}

.nav-links a::after {
  position: absolute;
  right: 0;
  bottom: 11px;
  left: 0;
  height: 2px;
  content: "";
  border-radius: 2px;
  background: var(--navy);
  opacity: 0;
  transform: scaleX(.4);
  transition: opacity .15s ease, transform .15s ease;
}

.nav-links a:hover,
.nav-links a.active { color: var(--ink); }

.nav-links a.active::after {
  opacity: 1;
  transform: scaleX(1);
}

.page-wrap {
  width: min(1040px, calc(100% - 48px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 56px;
}

.sidebar { min-width: 0; }

.sidebar-sticky {
  position: sticky;
  top: 61px;
  padding: 46px 0 44px;
}

.portrait {
  width: 176px;
  height: auto;
  aspect-ratio: 2 / 3;
  display: block;
  object-fit: cover;
  border: 1px solid var(--hairline);
  border-radius: 10px;
  background: var(--gray-bg);
  object-position: center;
}

.sidebar h1 {
  margin: 25px 0 0;
  font-family: var(--serif);
  font-size: 32px;
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -.025em;
}

.profile-role {
  margin: 10px 0 0;
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.48;
}

.interest-chips {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  padding: 4px 9px;
  border: 1px solid;
  border-radius: 999px;
  font: 400 9px/1.4 var(--mono);
  white-space: nowrap;
}

.chip:nth-child(3n + 1) { color: var(--navy); background: var(--navy-bg); border-color: var(--navy-line); }
.chip:nth-child(3n + 2) { color: var(--violet); background: var(--violet-bg); border-color: var(--violet-line); }
.chip:nth-child(3n) { color: var(--amber); background: var(--amber-bg); border-color: var(--amber-line); }

.profile-meta {
  margin: 25px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--hairline);
}

.profile-meta div {
  margin-bottom: 9px;
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 8px;
}

.profile-meta dt,
.profile-meta dd {
  min-width: 0;
  margin: 0;
  font-size: 11px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.profile-meta dt {
  color: var(--gray);
  font-family: var(--mono);
}

.profile-meta dd { color: var(--ink-soft); }

.profile-actions {
  margin-top: 20px;
  padding-top: 17px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  border-top: 1px solid var(--hairline);
}

.profile-actions a,
.profile-actions button {
  padding: 0;
  color: var(--ink-soft);
  border: 0;
  background: none;
  font: 400 11px/1.5 var(--mono);
  text-decoration: none;
  cursor: pointer;
}

.profile-actions a:hover,
.profile-actions button:hover { color: var(--navy); }

.content {
  min-width: 0;
  padding-bottom: 48px;
}

.loading,
.error {
  margin: 0;
  padding: 72px 0;
  color: var(--ink-soft);
  font: 12px/1.5 var(--mono);
}

.major-section {
  padding: 51px 0;
  scroll-margin-top: 60px;
  border-bottom: 1px solid var(--hairline);
}

.major-section:first-child { padding-top: clamp(150px, 25vh, 340px); }

.section-heading {
  margin: 0 0 28px;
  display: flex;
  align-items: baseline;
  gap: 13px;
}

.section-heading h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 29px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -.015em;
}

.about-lead {
  max-width: 690px;
  margin: 0 0 20px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 20px;
  line-height: 1.52;
}

.prose p {
  max-width: 690px;
  margin: 0 0 16px;
  color: var(--ink);
}

.prose p:last-child { margin-bottom: 0; }

.subsection + .subsection {
  margin-top: 34px;
  padding-top: 34px;
  border-top: 1px solid var(--hairline);
}

.subsection-title {
  margin: 0 0 18px;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 500;
}

.entry-list { min-width: 0; }

.entry {
  display: block;
}

.entry + .entry {
  margin-top: 23px;
  padding-top: 23px;
  border-top: 1px solid var(--hairline);
}

.entry-period {
  margin: 0 0 7px;
  color: var(--ink-soft);
  font: 500 11px/1.4 var(--mono);
}

.entry h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.35;
}

.entry-meta {
  margin: 6px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.entry-secondary {
  margin-top: 7px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 7px 12px;
}

.entry-subtitle {
  color: var(--navy);
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
}

.entry-detail {
  color: var(--ink-soft);
  font: 400 10px/1.5 var(--mono);
}

.entry-body,
.entry ul {
  margin: 11px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.58;
}

.entry ul { padding-left: 18px; }
.entry li + li { margin-top: 5px; }

.pub-meta,
.resource-links {
  margin-top: 11px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
}

.award,
.pub-meta a,
.resource-links a {
  min-height: 25px;
  padding: 3px 9px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border-radius: 6px;
  font: 500 9px/1.4 var(--mono);
}

.publication-venue,
.publication-status {
  color: var(--ink-soft);
  font: 400 11px/1.5 var(--mono);
}

.award {
  color: var(--amber);
  border: 1px solid var(--amber-line);
  background: var(--amber-bg);
}

.pub-meta a,
.resource-links a {
  text-decoration: none;
  transition: transform .12s ease, box-shadow .12s ease;
}

.pub-meta a:hover,
.resource-links a:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, .09);
}

.link-paper { color: #0f6e6e; background: #e2f1f0; border: 1px solid #b4dbd9; }
.link-page { color: #5b7c4a; background: #e9f0e2; border: 1px solid #c7dbb6; }
.link-code { color: #4a4a4a; background: #ecebe8; border: 1px solid #d3d1cb; }
.link-data { color: #9c6a1e; background: #f8efd9; border: 1px solid #ead6a6; }
.link-video { color: #a23b3b; background: #f8e7e5; border: 1px solid #eec4c0; }
.link-misc { color: #6b6560; background: #efeeea; border: 1px solid #d9d6cf; }

.detail-list article {
  display: block;
}

.detail-list article + article {
  margin-top: 23px;
  padding-top: 23px;
  border-top: 1px solid var(--hairline);
}

.detail-list h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
}

.detail-list p {
  margin: 6px 0 0;
  color: var(--ink-soft);
  font: 400 14px/1.5 var(--sans);
}

.detail-list ul {
  margin: 7px 0 0;
  padding: 0;
  list-style: none;
  color: var(--ink-soft);
  font-size: 14px;
}

.detail-list li + li { margin-top: 5px; }

.detail-list li a {
  color: inherit;
  font: inherit;
  text-decoration-color: color-mix(in srgb, var(--navy) 35%, transparent);
  text-underline-offset: 3px;
}

footer {
  padding: 32px 0 8px;
  display: flex;
  justify-content: space-between;
  gap: 15px;
  color: var(--ink-soft);
  font: 400 10px/1.5 var(--mono);
}

footer p { margin: 0; }
footer a { color: inherit; text-decoration: none; }

@media (max-width: 860px) {
  .nav-inner,
  .page-wrap { width: min(100% - 36px, 760px); }
  .page-wrap { grid-template-columns: 205px minmax(0, 1fr); gap: 38px; }
  .portrait { width: 156px; height: auto; }
  .sidebar h1 { font-size: 28px; }
  .nav-links { gap: 15px; }
}

@media (max-width: 680px) {
  html { scroll-behavior: auto; }
  .topbar { position: relative; }
  .nav-inner {
    width: 100%;
    min-height: 0;
    padding: 0 18px;
    display: block;
  }
  .nav-brand {
    padding: 13px 0 8px;
    display: inline-block;
  }
  .nav-links {
    margin: 0;
    padding-bottom: 2px;
  }
  .nav-links a { padding: 7px 0 12px; }
  .nav-links a::after { bottom: 6px; }
  .page-wrap {
    width: 100%;
    max-width: 100%;
    display: block;
  }
  .sidebar,
  .sidebar-sticky,
  .content {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }
  .sidebar-sticky {
    position: static;
    padding: 36px 22px 34px;
    display: grid;
    grid-template-columns: 112px minmax(0, 1fr);
    grid-template-areas:
      "portrait name"
      "portrait role"
      "portrait interests"
      "meta meta"
      "actions actions";
    gap: 0 20px;
    border-bottom: 1px solid var(--hairline);
  }
  .portrait {
    grid-area: portrait;
    width: 112px;
    height: auto;
  }
  .sidebar h1 {
    grid-area: name;
    margin-top: 2px;
  }
  .profile-role {
    grid-area: role;
    margin-top: 7px;
  }
  .interest-chips {
    grid-area: interests;
    margin-top: 15px;
    align-self: start;
  }
  .profile-meta { grid-area: meta; }
  .profile-actions { grid-area: actions; }
  .profile-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }
  .profile-meta div { display: block; }
  .profile-meta dt { margin-bottom: 3px; }
  .content { padding: 0 22px 36px; }
  .about-lead,
  .prose p,
  .entry,
  .entry > div { min-width: 0; max-width: 100%; overflow-wrap: anywhere; }
  .major-section { scroll-margin-top: 15px; }
  .major-section:first-child { padding-top: 40px; }
}

@media (max-width: 460px) {
  .sidebar-sticky { grid-template-columns: 82px minmax(0, 1fr); gap: 0 16px; }
  .portrait { width: 82px; height: auto; }
  .sidebar h1 { font-size: 25px; }
  .profile-meta { grid-template-columns: 1fr; gap: 3px; }
  .profile-meta div { display: grid; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

@media print {
  .topbar,
  .profile-actions,
  footer { display: none !important; }
  .page-wrap {
    width: 100%;
    grid-template-columns: 190px 1fr;
    gap: 32px;
  }
  .sidebar-sticky { position: static; padding-top: 30px; }
  .major-section { padding: 32px 0; }
  .major-section:first-child { padding-top: 32px; }
  .entry,
  .detail-list article { break-inside: avoid; }
}