/* ── Design Tokens ── */
:root {
  --bg: #070b14;
  --surface: #0b1120;
  --surface-alt: #0e1628;
  --rule: rgba(148, 170, 210, 0.12);
  --rule-strong: rgba(148, 170, 210, 0.22);
  --ink: #dbe2ee;
  --ink-muted: #8a96ac;
  --ink-dim: #5a647a;
  --accent: #5b8def;
  --accent-deep: #2b5bc7;
  --accent-soft: rgba(91, 141, 239, 0.10);
  --sans: "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: "Source Serif 4", "Source Serif Pro", "Newsreader", Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

html { scroll-behavior: smooth; }

.pa-root {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
}

/* Fine paper grain overlay */
.pa-root::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .5;
  background-image: radial-gradient(rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 3px 3px;
  z-index: 0;
}

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

.pa-sans { font-family: var(--sans); }
.pa-mono { font-family: var(--mono); }

/* ── Nav ── */
.pa-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 80px;
  border-bottom: 1px solid var(--rule);
  background: rgba(7, 11, 20, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.pa-brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
  font-family: var(--sans);
  text-decoration: none;
  color: inherit;
}

.pa-brand-mark {
  width: 28px;
  height: 28px;
  border: 1px solid var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-style: italic;
  color: var(--accent);
  font-size: 16px;
  flex-shrink: 0;
  align-self: center;
}

.pa-brand-name {
  font-weight: 500;
  letter-spacing: -0.01em;
  font-size: 15px;
  color: var(--ink);
}

.pa-brand-sub {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pa-navlinks {
  display: flex;
  gap: 36px;
  font-family: var(--sans);
  font-size: 14px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.pa-navlink {
  color: var(--ink-muted);
  text-decoration: none;
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: color .15s, border-color .15s;
}

.pa-navlink:hover { color: var(--ink); }
.pa-navlink.is-active { color: var(--ink); border-bottom-color: var(--accent); }

.pa-navside {
  display: flex;
  gap: 14px;
  align-items: center;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-muted);
}

.pa-navside a {
  color: var(--ink-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color .15s;
}

.pa-navside a:hover { color: var(--accent); }

.pa-lang-switch {
  display: flex;
  gap: 10px;
  align-items: center;
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-muted);
}

.pa-lang-current {
  color: var(--ink);
  font-weight: 500;
}

.pa-lang-link {
  color: var(--ink-muted);
  text-decoration: none;
  transition: color .15s;
}

.pa-lang-link:hover { color: var(--ink); }

.pa-lang-sep {
  color: var(--ink-dim);
}

/* ── Shell & Container ── */
.pa-shell {
  position: relative;
  z-index: 1;
}

.pa-container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 80px;
}

/* ── Landing: Hero ── */
.pa-hero {
  padding: 96px 0 64px;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 80px;
  align-items: start;
}

.pa-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.pa-eyebrow::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

.pa-hero-h1 {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 20px 0 10px;
  line-height: 1;
}

.pa-hero-first {
  font-family: var(--sans);
  font-size: 80px;
  font-weight: 700;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  color: var(--ink-muted);
  line-height: 0.92;
}

.pa-hero-last {
  font-family: var(--sans);
  font-size: 80px;
  font-weight: 700;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  color: var(--ink);
  line-height: 0.92;
}

.pa-hero-role {
  font-family: var(--mono);
  font-size: 13px;
  color: #7dd3fc;
  letter-spacing: 0.04em;
  margin-bottom: 24px;
  margin-top: 0;
}

.pa-hero-intro {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-muted);
  max-width: 56ch;
  margin: 0;
}

.pa-avatar {
  position: absolute;
  top: 0;
  right: 0;
  width: 140px;
  height: 140px;
  border-radius: 8px;
  object-fit: cover;
  object-position: center top;
  border: 1px solid var(--rule-strong);
  filter: grayscale(5%) contrast(1.05);
}

.pa-hero-meta {
  border-left: 1px solid var(--rule);
  padding-left: 32px;
  padding-top: 36px;
  margin: 0;
}

.pa-hero-meta dt {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 6px;
}

.pa-hero-meta dd {
  margin: 0 0 22px;
  font-size: 14px;
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.6;
}

.pa-hero-meta dd a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: border-color .15s, color .15s;
}

.pa-hero-meta dd a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ── Hero social links (mobile only) ── */
.pa-hero-social {
  display: none;
}

/* ── Section Headers ── */
.pa-section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin: 96px 0 32px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 18px;
}

.pa-section-head h2 {
  font-family: var(--sans);
  font-weight: 500;
  font-size: 24px;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--ink);
}

.pa-section-head h2 .pa-no {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  margin-right: 14px;
  letter-spacing: 0.08em;
}

.pa-section-head .pa-more {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-muted);
  text-decoration: none;
}

.pa-section-head .pa-more:hover { color: var(--accent); }

/* ── Recent Articles List ── */
.pa-recent { display: flex; flex-direction: column; }

.pa-recent-item {
  display: grid;
  grid-template-columns: 110px 1fr 90px;
  gap: 32px;
  align-items: baseline;
  padding: 22px 0;
  border-bottom: 1px solid var(--rule);
  text-decoration: none;
  color: inherit;
  transition: background .15s, padding-left .15s, padding-right .15s;
}

.pa-recent-item:hover {
  background: var(--accent-soft);
  padding-left: 14px;
  padding-right: 14px;
  margin: 0 -14px;
}

.pa-recent-date {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
}

.pa-recent-title {
  font-family: var(--sans);
  font-size: 18px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}

.pa-recent-sub {
  font-size: 14.5px;
  color: var(--ink-muted);
  max-width: 62ch;
}

.pa-recent-cat {
  justify-self: end;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

/* ── Skills Grid ── */
.pa-skills {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}

.pa-skill-col {
  background: var(--bg);
  padding: 24px 22px 28px;
}

.pa-skill-col h3 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 18px;
}

.pa-skill-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pa-skill-col li {
  font-family: var(--sans);
  font-size: 13.5px;
  color: var(--ink);
  padding: 6px 0;
  border-bottom: 1px solid var(--rule);
}

.pa-skill-col li:last-child { border-bottom: none; }

/* ── Footer ── */
.pa-footer {
  margin-top: 120px;
  padding: 40px 0 60px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
}

/* ── Articles Index Header ── */
.pa-idx-head {
  padding: 80px 0 40px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: end;
  border-bottom: 1px solid var(--rule);
}

.pa-idx-head h1 {
  font-family: var(--sans);
  font-size: 52px;
  font-weight: 500;
  letter-spacing: -0.025em;
  margin: 0;
  line-height: 1;
}

.pa-idx-head h1 em {
  font-style: italic;
  font-family: var(--serif);
  color: var(--accent);
  font-weight: 400;
}

.pa-idx-head p {
  color: var(--ink-muted);
  font-size: 16px;
  line-height: 1.55;
  margin: 0;
}

.pa-idx-meta {
  display: flex;
  gap: 32px;
  margin-top: 28px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.pa-idx-meta span b {
  color: var(--accent);
  font-weight: 500;
}

/* ── Category Filters ── */
.pa-filters {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 12px;
  flex-wrap: wrap;
}

.pa-filter-label {
  color: var(--ink-dim);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-right: 6px;
}

.pa-filter {
  padding: 6px 12px;
  border: 1px solid var(--rule);
  color: var(--ink-muted);
  cursor: pointer;
  transition: all .15s;
  letter-spacing: 0.04em;
  background: transparent;
  font-family: var(--mono);
  font-size: 12px;
}

.pa-filter:hover {
  color: var(--ink);
  border-color: var(--rule-strong);
}

.pa-filter.is-on {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}

/* ── Article Card Grid ── */
.pa-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--rule);
  margin: 1px 0 0;
  border-right: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.pa-card {
  background: var(--bg);
  transition: background .15s;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}

.pa-card:hover { background: var(--surface); }

.pa-card.is-hidden { display: none; }

.pa-card-thumb {
  aspect-ratio: 16/9;
  border-bottom: 1px solid var(--rule);
  position: relative;
  overflow: hidden;
  background: var(--surface);
}

.pa-card-thumb-label {
  position: absolute;
  bottom: 10px;
  left: 14px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  z-index: 1;
}

.pa-card-thumb--icon::after { display: none; }

.pa-card-thumb-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.pa-thumb-icon {
  width: 88px;
  height: auto;
  filter: drop-shadow(0 0 16px rgba(0, 0, 0, 0.6));
}

.pa-card-body {
  padding: 22px 24px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.pa-card-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 14px;
}

.pa-card-cat { color: var(--accent); }

.pa-card h3 {
  font-family: var(--sans);
  font-size: 19px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
  line-height: 1.25;
  color: var(--ink);
}

.pa-card p {
  font-size: 14.5px;
  color: var(--ink-muted);
  margin: 0;
  line-height: 1.5;
  flex: 1;
}

.pa-card-tags {
  margin-top: 18px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.pa-tag {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-muted);
  padding: 3px 8px;
  border: 1px solid var(--rule);
  letter-spacing: 0.04em;
}

/* ── Article Page Layout ── */
.pa-art-wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 80px;
}

.pa-art {
  padding: 60px 0 100px;
  display: grid;
  grid-template-columns: 200px 1fr 200px;
  gap: 64px;
}

/* Table of contents */
.pa-art-toc {
  position: sticky;
  top: 88px;
  align-self: start;
}

.pa-art-toc h4 {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin: 0 0 16px;
}

.pa-art-toc nav ul,
.pa-art-toc nav ol {
  list-style: none;
  padding: 0;
  margin: 0;
}

.pa-art-toc nav ul li {
  padding: 6px 0 6px 14px;
  border-left: 1px solid var(--rule);
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-muted);
  transition: color .15s, border-left-color .15s;
}

.pa-art-toc nav ul li:hover { color: var(--ink); border-left-color: var(--rule-strong); }
.pa-art-toc nav ul li.is-current { color: var(--accent); border-left-color: var(--accent); }

.pa-art-toc nav ul li a {
  color: inherit;
  text-decoration: none;
}

/* Article body */
.pa-art-body { max-width: 64ch; }

.pa-art-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.pa-art-body > h1:first-child {
  font-family: var(--sans);
  font-size: 44px;
  font-weight: 500;
  letter-spacing: -0.022em;
  line-height: 1.1;
  margin: 0 0 24px;
  color: var(--ink);
}

.pa-art-meta {
  display: flex;
  gap: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.pa-art-meta span b { color: var(--ink); font-weight: 500; }

.pa-art-body h2 {
  font-family: var(--sans);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.012em;
  margin: 56px 0 18px;
  color: var(--ink);
  scroll-margin-top: 90px;
}

.pa-art-body h3 {
  font-family: var(--sans);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 36px 0 14px;
  color: var(--ink);
  scroll-margin-top: 90px;
}

.pa-art-body h4 { scroll-margin-top: 90px; }

.pa-art-body p {
  font-size: 17px;
  line-height: 1.72;
  color: var(--ink);
  margin: 0 0 18px;
  font-family: var(--serif);
}

.pa-art-body ul,
.pa-art-body ol {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.72;
  color: var(--ink);
  padding-left: 1.5em;
  margin: 0 0 18px;
}

.pa-art-body li { margin-bottom: 6px; }

.pa-art-body a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(91, 141, 239, 0.3);
  transition: border-color .15s;
}

.pa-art-body a:hover { border-bottom-color: var(--accent); }

.pa-art-body hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 48px 0;
}

/* Inline code */
.pa-art-body code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--surface);
  border: 1px solid var(--rule);
  padding: 1px 6px;
  color: var(--ink);
}

/* Code blocks (Hugo highlight shortcode / fenced code) */
.pa-art-body .highlight {
  margin: 28px 0;
  border: 1px solid var(--rule);
  background: var(--surface);
}

.pa-art-body .highlight pre {
  margin: 0;
  padding: 18px 20px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
  overflow-x: auto;
  background: transparent !important;
}

.pa-art-body .highlight code { background: none; border: none; padding: 0; font-size: 13px; }

/* Blockquote as callout */
.pa-art-body blockquote {
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  padding: 18px 24px;
  margin: 28px 0;
  font-style: normal;
}

.pa-art-body blockquote p {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.6;
  margin: 0;
}

/* Tables */
.pa-art-body table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 14px;
  margin: 28px 0;
}

.pa-art-body th {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  border-bottom: 1px solid var(--rule-strong);
  padding: 8px 12px;
  text-align: left;
}

.pa-art-body td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--rule);
  color: var(--ink-muted);
}

/* Callout shortcode */
.pa-callout {
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  padding: 18px 24px;
  margin: 28px 0;
}

.pa-callout-title {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.pa-callout-body {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  margin: 0;
}

/* Article aside */
.pa-art-aside {
  position: sticky;
  top: 88px;
  align-self: start;
}

.pa-aside-block {
  border-top: 1px solid var(--rule);
  padding: 18px 0 24px;
}

.pa-aside-block h5 {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin: 0 0 10px;
}

.pa-aside-block p {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink);
  margin: 0;
  line-height: 1.5;
}

.pa-aside-block a {
  color: var(--accent);
  text-decoration: none;
}

.pa-citation {
  font-family: var(--mono) !important;
  font-size: 11px !important;
  color: var(--ink-muted) !important;
  line-height: 1.7 !important;
}

/* Article prev/next navigation */
.pa-art-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin: 80px 0 0;
  max-width: 64ch;
}

.pa-art-nav a {
  background: var(--bg);
  padding: 20px 22px;
  text-decoration: none;
  transition: background .15s;
  display: block;
}

.pa-art-nav a:hover { background: var(--surface); }
.pa-art-nav a.is-disabled { opacity: .35; pointer-events: none; }

.pa-art-nav small {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
  display: block;
  margin-bottom: 8px;
}

.pa-nav-r { text-align: right; }

.pa-art-nav strong {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.3;
  display: block;
}

/* ── About Page ── */
.pa-about-grid {
  padding: 80px 0 100px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 80px;
  align-items: start;
  align-content: start;
}

.pa-about-content { max-width: 64ch; }

.pa-about-content h1 {
  font-family: var(--sans);
  font-size: 44px;
  font-weight: 500;
  letter-spacing: -0.022em;
  line-height: 1.1;
  margin: 0 0 40px;
  color: var(--ink);
}

.pa-about-content h2 {
  font-family: var(--sans);
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.012em;
  margin: 56px 0 18px;
  color: var(--ink);
}

.pa-about-content h3 {
  font-family: var(--sans);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 36px 0 14px;
  color: var(--ink);
}

.pa-about-content p {
  font-size: 17px;
  line-height: 1.72;
  color: var(--ink);
  margin: 0 0 18px;
  font-family: var(--serif);
}

.pa-about-content ul,
.pa-about-content ol {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.72;
  color: var(--ink);
  padding-left: 1.5em;
  margin: 0 0 18px;
}

.pa-about-content li { margin-bottom: 6px; }

.pa-about-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(91, 141, 239, 0.3);
  transition: border-color .15s;
}

.pa-about-content a:hover { border-bottom-color: var(--accent); }

.pa-about-aside {
  position: sticky;
  top: 88px;
  height: fit-content;
  align-self: start;
}

.pa-about-photo {
  display: block;
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--rule-strong);
  filter: grayscale(5%) contrast(1.05);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .pa-nav { padding: 20px 40px; }
  .pa-container { padding: 0 40px; }
  .pa-art-wrap { padding: 0 40px; }
  .pa-hero { grid-template-columns: 1fr; gap: 48px; }
  .pa-hero-first { font-size: 56px; }
  .pa-hero-last { font-size: 56px; }
  .pa-skills { grid-template-columns: repeat(2, 1fr); }
  .pa-grid { grid-template-columns: repeat(2, 1fr); }
  .pa-art { grid-template-columns: 1fr; }
  .pa-art-toc { display: none; }
  .pa-art-aside { display: none; }
  .pa-idx-head { grid-template-columns: 1fr; gap: 32px; }
  .pa-idx-head h1 { font-size: 40px; }
  .pa-about-grid { grid-template-columns: 1fr; gap: 48px; }
  .pa-about-aside { position: static; }
}

@media (max-width: 640px) {
  .pa-nav {
    padding: 14px 20px;
    flex-wrap: wrap;
    gap: 10px;
  }
  .pa-navlinks { gap: 18px; font-size: 13px; }
  .pa-navside { display: none; }
  .pa-lang-switch { font-size: 11px; gap: 8px; }
  .pa-container { padding: 0 20px; }
  .pa-art-wrap { padding: 0 20px; }
  .pa-hero { padding: 48px 0 32px; gap: 36px; }
  .pa-hero-first { font-size: 13vw; }
  .pa-hero-last  { font-size: 13vw; }
  .pa-hero-intro { font-size: 15px; max-width: 100%; }
  .pa-hero-meta { padding-left: 20px; }
  .pa-skills { grid-template-columns: 1fr; }
  .pa-grid { grid-template-columns: 1fr; }
  .pa-recent-item { grid-template-columns: 1fr; gap: 4px; }
  .pa-recent-cat { justify-self: start; }
  .pa-hero-social {
    display: flex;
    gap: 20px;
    margin-top: 24px;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--ink-muted);
  }
  .pa-hero-social a {
    color: var(--ink-muted);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color .15s;
  }
  .pa-hero-social a:hover { color: var(--accent); }
  .pa-section-head { margin: 60px 0 24px; }
  .pa-idx-head h1 { font-size: 32px; }
  .pa-art-body > h1:first-child { font-size: 30px; }
  .pa-about-content h1 { font-size: 32px; }
  .pa-art-nav { grid-template-columns: 1fr; }
  .pa-footer { flex-direction: column; gap: 8px; }
}