/* ============================================================
   Dr. Yaniv Proselkov — minimal academic theme
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Page background is cooler/darker; content surface is bright white */
  --color-bg:        #eef0f3;
  --color-bg-2:      #e7eaef;
  --color-surface:   #ffffff;
  --color-surface-2: #f6f7f9;
  --color-ink:       #0e0e10;
  --color-text:      #1f2024;
  --color-muted:     #6a6a72;
  --color-faint:     #9a9aa2;
  --color-line:      #e1e3e8;
  --color-line-2:    #ececef;
  --color-rule:      #cdd1d8;
  --color-accent:    #1f4ed8;
  --color-accent-soft: #eaf0ff;

  --radius:          6px;
  --radius-lg:       10px;
  --max-width:       760px;
  --max-width-wide:  1100px;

  --font-serif:      'Fraunces', Georgia, 'Times New Roman', serif;
  --font-sans:       'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono:       'JetBrains Mono', 'SFMono-Regular', Menlo, Consolas, monospace;

  --shadow-sm:       0 1px 2px rgba(14,14,16,.05);
  --shadow-md:       0 12px 32px -16px rgba(14,14,16,.18);
  --shadow-lg:       0 24px 60px -28px rgba(14,14,16,.28);

  --ease:            cubic-bezier(.4,.0,.2,1);

  /* Legacy aliases */
  --color-primary:   var(--color-ink);
  --color-border:    var(--color-line);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  font-feature-settings: "ss01", "cv11";
  letter-spacing: -0.005em;
}

/* Subtle network background sits on the cool page colour */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-color: var(--color-bg);
  background-image:
    radial-gradient(ellipse at 10% 0%, rgba(31,78,216,.08), transparent 55%),
    radial-gradient(ellipse at 100% 100%, rgba(14,14,16,.06), transparent 55%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='560' height='560' viewBox='0 0 560 560'><g fill='none' stroke='%230e0e10' stroke-opacity='0.07' stroke-width='0.7'><circle cx='80' cy='120' r='1.8' fill='%230e0e10' fill-opacity='0.1' stroke='none'/><circle cx='240' cy='60' r='1.4' fill='%230e0e10' fill-opacity='0.09' stroke='none'/><circle cx='420' cy='180' r='2' fill='%230e0e10' fill-opacity='0.1' stroke='none'/><circle cx='510' cy='420' r='1.6' fill='%230e0e10' fill-opacity='0.09' stroke='none'/><circle cx='320' cy='340' r='2.2' fill='%230e0e10' fill-opacity='0.11' stroke='none'/><circle cx='110' cy='460' r='1.6' fill='%230e0e10' fill-opacity='0.09' stroke='none'/><circle cx='200' cy='250' r='1.4' fill='%230e0e10' fill-opacity='0.09' stroke='none'/><line x1='80' y1='120' x2='240' y2='60'/><line x1='240' y1='60' x2='420' y2='180'/><line x1='420' y1='180' x2='320' y2='340'/><line x1='320' y1='340' x2='200' y2='250'/><line x1='200' y1='250' x2='80' y2='120'/><line x1='320' y1='340' x2='510' y2='420'/><line x1='200' y1='250' x2='110' y2='460'/><line x1='110' y1='460' x2='320' y2='340'/></g></svg>");
  background-size: auto, auto, 560px 560px;
  background-repeat: no-repeat, no-repeat, repeat;
}

main, header, footer { position: relative; z-index: 1; }

/* Lift the page content onto a bright surface, like a real document */
main {
  max-width: var(--max-width-wide);
  margin: 2.5rem auto 3rem;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

/* On the network page we don't want the inner-card framing — that page
   manages its own layout and needs the wider canvas. */
body.network-page main {
  background: transparent;
  border: none;
  box-shadow: none;
  border-radius: 0;
  max-width: none;
  margin: 0;
  overflow: visible;
}

@media (max-width: 760px) {
  main {
    margin: 1rem .75rem 2rem;
    border-radius: var(--radius);
  }
}

/* ============================================================
   Layout
   ============================================================ */
.site-wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

@media (max-width: 560px) {
  .site-wrapper { padding: 0 1.25rem; }
}

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

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  color: var(--color-ink);
  letter-spacing: -0.02em;
  line-height: 1.18;
}

h1 { font-size: clamp(2rem, 4vw, 2.85rem); }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.15rem; }

a { color: var(--color-ink); text-decoration: none; }
a:hover { color: var(--color-accent); }

p { margin: 0; }

hr {
  border: none;
  border-top: 1px solid var(--color-line);
  margin: 2rem 0;
}

/* ============================================================
   Header / Navigation
   ============================================================ */
.site-header {
  background: rgba(250,250,250,.78);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--color-line);
  padding: .9rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .site-wrapper {
  max-width: var(--max-width-wide);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
}

.site-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: -.01em;
  color: var(--color-ink);
  position: relative;
  padding-left: 1.4rem;
}

.site-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: .9rem;
  height: .9rem;
  transform: translateY(-50%);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'><g fill='none' stroke='%231f4ed8' stroke-width='1'><circle cx='8' cy='8' r='2.2' fill='%231f4ed8'/><circle cx='2' cy='3' r='1.2'/><circle cx='14' cy='4' r='1.2'/><circle cx='13' cy='13' r='1.2'/><circle cx='3' cy='13' r='1.2'/><line x1='8' y1='8' x2='2' y2='3'/><line x1='8' y1='8' x2='14' y2='4'/><line x1='8' y1='8' x2='13' y2='13'/><line x1='8' y1='8' x2='3' y2='13'/></g></svg>");
  background-size: contain;
  background-repeat: no-repeat;
}

.site-nav {
  display: flex;
  gap: 1.6rem;
  list-style: none;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--color-muted);
  font-size: .85rem;
  font-weight: 500;
  letter-spacing: .01em;
  position: relative;
  padding: .15rem 0;
  transition: color .2s var(--ease);
}

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

.site-nav a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  bottom: -.4rem;
  height: 1px;
  background: var(--color-ink);
}

/* ============================================================
   Hero (homepage)
   ============================================================ */
.hero {
  padding: 4rem 0 2.5rem;
  border-bottom: 1px solid var(--color-line);
  background:
    linear-gradient(180deg, #fbfbfd 0%, var(--color-surface) 100%);
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  color: var(--color-ink);
  margin-bottom: .75rem;
  line-height: 1.05;
  font-weight: 400;
}

.hero h1 em {
  font-style: italic;
  color: var(--color-accent);
}

.hero .subtitle {
  font-family: var(--font-mono);
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--color-muted);
  margin-bottom: 1.75rem;
  font-weight: 400;
}

.hero .intro {
  max-width: 640px;
  color: var(--color-text);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: center;
  margin-bottom: 0;
}

.hero-grid .hero-text .intro {
  margin: 0;
  max-width: none;
}

.hero-portrait {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-portrait::before {
  content: "";
  position: absolute;
  inset: -14px -14px 14px 14px;
  border: 1px solid var(--color-ink);
  border-radius: var(--radius);
  z-index: 0;
  pointer-events: none;
}

.hero-portrait img {
  position: relative;
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: var(--radius);
  display: block;
  filter: grayscale(15%) contrast(1.02);
  z-index: 1;
}

@media (max-width: 760px) {
  .hero { padding: 3rem 0 2rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 2rem; }
  .hero-portrait::before { inset: -8px -8px 8px 8px; }
  .hero-portrait img { max-width: 260px; margin: 0 auto; }
}

/* ============================================================
   Quick-links grid (homepage) — sits in its own panel
   ============================================================ */
.quick-links-section {
  background: var(--color-surface-2);
  border-top: 1px solid var(--color-line);
  padding: 3rem 0 3.5rem;
}

.quick-links-section .section-eyebrow {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: .35rem;
}

.quick-links-section h2.section-heading {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: 1.5rem;
}

.quick-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 0;
  border: none;
}

.quick-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.5rem 1.4rem 1.6rem;
  text-decoration: none;
  color: var(--color-ink);
  display: flex;
  flex-direction: column;
  gap: .35rem;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: transform .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
  overflow: hidden;
}

.quick-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--color-accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .3s var(--ease);
}

.quick-card::after {
  content: "→";
  position: absolute;
  bottom: 1.1rem;
  right: 1.4rem;
  color: var(--color-faint);
  font-size: 1.05rem;
  transition: transform .25s var(--ease), color .25s var(--ease);
}

.quick-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-rule);
  box-shadow: var(--shadow-md);
}

.quick-card:hover::before { transform: scaleY(1); }
.quick-card:hover::after  { transform: translateX(4px); color: var(--color-accent); }

.quick-card h2 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: .15rem;
}

.quick-card p {
  font-size: .9rem;
  color: var(--color-muted);
  line-height: 1.5;
  padding-right: 1.5rem;
}

/* ============================================================
   Social buttons
   ============================================================ */
.social-links {
  display: flex;
  justify-content: center;
  gap: .75rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  color: var(--color-ink);
  text-decoration: none;
  font-size: .82rem;
  font-weight: 500;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.social-btn:hover {
  border-color: var(--color-ink);
  color: var(--color-ink);
}

/* ============================================================
   Page-level section
   ============================================================ */
.page-section { padding: 3rem 0 4rem; }

.page-section h1 {
  font-size: clamp(1.9rem, 3.5vw, 2.6rem);
  color: var(--color-ink);
  margin-bottom: .5rem;
  font-weight: 500;
}

.page-section h1::before {
  content: "";
  display: block;
  width: 36px;
  height: 3px;
  background: var(--color-accent);
  margin-bottom: 1.1rem;
  border-radius: 2px;
}

.page-section .section-lead {
  color: var(--color-muted);
  margin-bottom: 2.5rem;
  font-size: 1.05rem;
  max-width: 60ch;
  padding-left: 0;
  border-left: none;
}

/* ============================================================
   Bio / CV — distinct cards per section
   ============================================================ */
.bio-block {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.5rem 1.5rem 1.4rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.bio-block:last-child { margin-bottom: 0; }

.bio-block h2 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: -.01em;
  text-transform: none;
  color: var(--color-ink);
  margin-bottom: 1rem;
  padding-bottom: .65rem;
  border-bottom: 1px solid var(--color-line);
}

.bio-block h2::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  margin-right: .65rem;
  vertical-align: middle;
  transform: translateY(-1px);
}

.bio-block p {
  margin-bottom: .8rem;
  color: var(--color-text);
  font-size: 1rem;
}

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

.bio-block ul {
  margin: .5rem 0 .75rem 0;
  list-style: none;
  padding: 0;
}

.bio-block ul li {
  margin-bottom: .4rem;
  position: relative;
  padding-left: 1rem;
}

.bio-block ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .65em;
  width: 6px;
  height: 1px;
  background: var(--color-ink);
}

/* ============================================================
   Papers
   ============================================================ */
.papers-category { margin-bottom: 3rem; }

.papers-category h2 {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  color: var(--color-ink);
  margin-bottom: 1.2rem;
  padding: .55rem 0 .55rem .95rem;
  border-left: 3px solid var(--color-accent);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-surface-2);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-weight: 500;
}

.paper-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  margin-bottom: .7rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.paper-card:hover {
  border-color: #cfcfd4;
  box-shadow: var(--shadow-sm);
}

.paper-card.has-image {
  flex-direction: row;
  gap: 1.1rem;
  align-items: flex-start;
}

.paper-card.has-image .paper-body {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  flex: 1 1 auto;
  min-width: 0;
}

.paper-card .paper-thumb {
  margin: 0;
  flex: 0 0 auto;
  width: 96px;
}

.paper-card .paper-thumb img {
  width: 96px;
  height: 96px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--color-line);
  display: block;
  filter: grayscale(15%);
}

@media (max-width: 480px) {
  .paper-card.has-image { flex-direction: column; }
  .paper-card .paper-thumb { width: 100%; }
  .paper-card .paper-thumb img { width: 100%; height: 180px; }
}

.papers-category .category-image { margin: 0 0 1.5rem 0; }

.papers-category .category-image img {
  width: 100%;
  max-height: 280px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--color-line);
  display: block;
  filter: grayscale(20%);
}

.papers-category .category-image figcaption {
  font-size: .8rem;
  color: var(--color-muted);
  margin-top: .4rem;
  font-style: italic;
}

.bio-portrait {
  margin: 0 0 2.5rem 0;
  display: flex;
  justify-content: center;
  position: relative;
}

.bio-portrait img {
  width: 100%;
  height: auto;
  max-height: 460px;
  object-fit: cover;
  border-radius: var(--radius);
  filter: grayscale(15%) contrast(1.02);
}

.bio-figure {
  margin: 1.5rem 0 0 0;
  text-align: center;
}

.bio-figure img {
  width: 100%;
  max-width: 520px;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--color-line);
  filter: grayscale(15%);
}

.bio-figure figcaption {
  font-size: .85rem;
  color: var(--color-muted);
  font-style: italic;
  margin-top: .5rem;
}

.paper-card h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-ink);
  line-height: 1.35;
  font-weight: 500;
}

.paper-card .byline {
  font-size: .82rem;
  color: var(--color-muted);
}

.paper-card a {
  color: var(--color-accent);
  font-size: .87rem;
  word-break: break-word;
  text-decoration: none;
}

.paper-card a:hover { text-decoration: underline; }

.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  margin-top: .25rem;
}

.paper-card .pdf-link,
.paper-card .ext-link {
  display: inline-block;
  width: fit-content;
  margin-top: .25rem;
  padding: .22rem .65rem;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  font-size: .78rem;
  color: var(--color-ink);
  background: var(--color-surface);
  font-weight: 500;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.paper-card .pdf-link:hover,
.paper-card .ext-link:hover {
  border-color: var(--color-ink);
  color: var(--color-ink);
  text-decoration: none;
}

.paper-card .ext-link::before {
  content: "↗ ";
  opacity: .6;
}

.paper-card .pdf-link,
.paper-card .ext-link { margin-right: .25rem; }

/* ============================================================
   Essays — index list (now true cards)
   ============================================================ */
.essay-card {
  display: flex;
  gap: 1.4rem;
  padding: 1.25rem 1.25rem 1.4rem;
  margin: 0 0 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}

.essay-card:last-child { border-bottom: 1px solid var(--color-line); margin-bottom: 0; }

.essay-card:hover {
  border-color: var(--color-rule);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.essay-card.has-image .essay-thumb-link {
  flex: 0 0 200px;
  display: block;
  text-decoration: none;
}

.essay-card .essay-thumb {
  width: 100%;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-line-2);
}

.essay-card .essay-thumb img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  display: block;
  filter: grayscale(20%);
  transition: transform .5s var(--ease), filter .3s var(--ease);
}

.essay-card.has-image:hover .essay-thumb img {
  transform: scale(1.03);
  filter: grayscale(0%);
}

.essay-card .essay-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.essay-card h2 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  line-height: 1.25;
  margin: 0;
  font-weight: 500;
}

.essay-card h2 a {
  color: var(--color-ink);
  text-decoration: none;
  background-image: linear-gradient(var(--color-ink), var(--color-ink));
  background-size: 0% 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size .35s var(--ease);
  padding-bottom: 1px;
}

.essay-card h2 a:hover { background-size: 100% 1px; }

.essay-card .essay-meta {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-faint);
}

.essay-card .essay-summary {
  font-size: .98rem;
  color: var(--color-text);
  margin: 0;
  line-height: 1.6;
}

.essay-card .essay-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
}

.essay-card .essay-tags span {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .04em;
  background: transparent;
  border: 1px solid var(--color-line);
  color: var(--color-muted);
  padding: 2px 8px;
  border-radius: 999px;
}

.essay-card .essay-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: .35rem;
}

.essay-card .essay-actions a {
  font-size: .85rem;
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
}

.essay-card .essay-actions a:hover { text-decoration: underline; }

@media (max-width: 600px) {
  .essay-card { flex-direction: column; gap: 1rem; }
  .essay-card.has-image .essay-thumb-link { flex: none; width: 100%; }
  .essay-card .essay-thumb img { height: 200px; }
}

/* ============================================================
   Single essay article
   ============================================================ */
.essay-article {
  max-width: 680px;
  margin: 0 auto;
}

.essay-article h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 500;
  margin-bottom: .5rem;
  line-height: 1.15;
}

.essay-article .essay-meta {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-faint);
  margin-bottom: 2rem;
}

.essay-article .essay-back {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  margin: 1rem 0 2rem;
  text-transform: uppercase;
}

.essay-article .essay-back a {
  color: var(--color-muted);
  text-decoration: none;
}

.essay-article .essay-back a:hover { color: var(--color-ink); }

.essay-article p {
  margin: 0 0 1.15rem 0;
  font-size: 1.06rem;
  line-height: 1.75;
  color: var(--color-text);
}

.essay-article ul,
.essay-article ol {
  margin: 0 0 1.2rem 1.25rem;
  font-size: 1.04rem;
  line-height: 1.7;
}

.essay-article ul li,
.essay-article ol li { margin-bottom: .4rem; }

.essay-article h2 {
  margin: 2.2rem 0 .75rem 0;
  font-family: var(--font-serif);
  font-size: 1.45rem;
  color: var(--color-ink);
  font-weight: 500;
}

.essay-article a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-color: var(--color-line);
  text-underline-offset: 3px;
  transition: text-decoration-color .2s var(--ease), color .2s var(--ease);
}

.essay-article a:hover {
  text-decoration-color: var(--color-accent);
  color: var(--color-accent);
}

.essay-article blockquote {
  border-left: 2px solid var(--color-ink);
  padding: .25rem 0 .25rem 1.2rem;
  margin: 1.5rem 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--color-ink);
  line-height: 1.5;
}

.essay-cover,
.essay-fig {
  margin: 1.75rem 0;
  text-align: center;
}

.essay-cover img,
.essay-fig img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--color-line);
  display: block;
  filter: grayscale(10%);
}

.essay-cover figcaption,
.essay-fig figcaption {
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--color-faint);
  font-style: normal;
  letter-spacing: .04em;
  margin-top: .6rem;
  text-align: center;
}

.essay-tldr {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-ink);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  margin: 1.5rem 0 2rem;
}

.essay-tldr h2 {
  margin: 0 0 .5rem 0;
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--color-ink);
  text-transform: uppercase;
  letter-spacing: .14em;
  font-weight: 600;
}

.essay-tldr p {
  font-size: .98rem;
  margin: 0;
}

.essay-rule {
  border: none;
  border-top: 1px solid var(--color-line);
  margin: 2rem 0;
}

.essay-source {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--color-muted);
}

.essay-links { font-size: .88rem; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--color-ink);
  color: rgba(255,255,255,.65);
  text-align: center;
  padding: 2.5rem 1.5rem 2.5rem;
  font-size: .82rem;
  margin-top: 3rem;
  position: relative;
  z-index: 1;
}

.site-footer a { color: rgba(255,255,255,.85); }

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1rem;
}

.footer-links .social-btn {
  background: transparent;
  color: rgba(255,255,255,.85);
  border: 1px solid rgba(255,255,255,.18);
  padding: .4rem .9rem;
  font-size: .8rem;
  border-radius: 999px;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.footer-links .social-btn:hover {
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.5);
  color: #fff;
}

.footer-copy {
  color: rgba(255,255,255,.45);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* ============================================================
   Responsive tweaks
   ============================================================ */
@media (max-width: 560px) {
  .site-header .site-wrapper {
    flex-direction: column;
    align-items: flex-start;
    gap: .75rem;
  }
  .site-nav { gap: 1.1rem; }
  .page-section { padding: 2rem 0 3rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0ms !important; transition-duration: 0ms !important; }
  html { scroll-behavior: auto; }
}