:root {
  --bg: #fafaf9; --surface: #ffffff; --text: #1c1917; --muted: #57534e; --border: #e7e5e4;
  --accent: #0f766e; --accent-ink: #ffffff; --tag-bg: #f0fdfa; --tag-ink: #115e59;
  --radius: 8px; --max: 68rem;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c0a09; --surface: #1c1917; --text: #f5f5f4; --muted: #a8a29e; --border: #292524;
    --accent: #2dd4bf; --accent-ink: #042f2e; --tag-bg: #134e4a; --tag-ink: #99f6e4;
  }
}
:root[data-theme="dark"] {
  --bg: #0c0a09; --surface: #1c1917; --text: #f5f5f4; --muted: #a8a29e; --border: #292524;
  --accent: #2dd4bf; --accent-ink: #042f2e; --tag-bg: #134e4a; --tag-ink: #99f6e4;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 1rem/1.65 var(--sans); }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1rem; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--accent-ink); padding: .5rem 1rem; z-index: 10; }
.skip:focus { left: 0; }

.site-header { border-bottom: 1px solid var(--border); background: var(--surface); position: sticky; top: 0; z-index: 5; }
.bar { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1.25rem; padding-top: .75rem; padding-bottom: .75rem; }
.brand { font: 700 1.1rem var(--mono); color: var(--text); text-decoration: none; letter-spacing: -.02em; }
.nav { display: flex; flex-wrap: wrap; gap: .25rem .25rem; list-style: none; margin: 0; padding: 0; }
.nav a { display: block; padding: .3rem .65rem; border-radius: var(--radius); color: var(--muted); text-decoration: none; font-size: .95rem; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); background: var(--bg); }
.nav a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--accent); }
.tools { margin-left: auto; display: flex; gap: .4rem; }
.chip { font: 600 .8rem var(--mono); color: var(--text); background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .3rem .6rem; text-decoration: none; cursor: pointer; line-height: 1.4; }
.chip:hover { border-color: var(--accent); }

main { padding-top: 2.5rem; padding-bottom: 4rem; min-height: 60vh; }
h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); line-height: 1.15; margin: 0 0 1rem; letter-spacing: -.02em; }
h2 { font-size: 1.4rem; margin: 2.5rem 0 1rem; }
h3, .h3 { font-size: 1.05rem; margin: 0 0 .25rem; }
.card h2 { font-size: 1.15rem; margin: 0 0 .25rem; }
section > h2:first-child { margin-top: 0; }
section { margin-top: 3rem; }
.hero { margin-top: 0; padding: 1rem 0 .5rem; max-width: 46rem; }
.eyebrow { font: 600 .85rem var(--mono); color: var(--accent); text-transform: uppercase; letter-spacing: .06em; margin: 0 0 .5rem; }
.lead { color: var(--muted); font-size: 1.1rem; }
.meta { color: var(--muted); font-size: .9rem; margin: 0 0 .5rem; }
.actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.5rem; }
.btn { display: inline-block; padding: .55rem 1.1rem; border-radius: var(--radius); background: var(--accent); color: var(--accent-ink);
  font-weight: 600; text-decoration: none; border: 1px solid var(--accent); }
.btn.ghost { background: transparent; color: var(--accent); }

.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr)); }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.25rem; }
.card ul { margin: .5rem 0; padding-left: 1.1rem; }
.card li { margin: .2rem 0; }
.two { display: grid; gap: 2rem; grid-template-columns: 1fr; }
@media (min-width: 52rem) { .two { grid-template-columns: 2fr 1fr; } }
.prose p { max-width: 42rem; margin: 0 0 1rem; }
dl { margin: 0; } dt { font-size: .8rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; margin-top: .75rem; } dd { margin: 0; }
.list { list-style: none; padding: 0; margin: 0; }
.list li { padding: .6rem 0; border-bottom: 1px solid var(--border); }
.timeline { list-style: none; padding: 0; margin: 0; display: grid; gap: 1rem; }
.tags { display: flex; flex-wrap: wrap; gap: .35rem; list-style: none; padding: 0 !important; margin: .75rem 0 0 !important; }
.tags li { background: var(--tag-bg); color: var(--tag-ink); border-radius: 999px; padding: .1rem .6rem; font: .75rem var(--mono); margin: 0; }
.tags a { color: inherit; text-decoration: none; }
.badge { display: inline-block; font: 600 .7rem var(--mono); text-transform: uppercase; letter-spacing: .05em; color: var(--tag-ink); background: var(--tag-bg); padding: .05rem .5rem; border-radius: 4px; margin-right: .4rem; }
.contact li { padding: .9rem 0; }

.site-footer { border-top: 1px solid var(--border); color: var(--muted); font-size: .9rem; padding: 1.5rem 0; }
.site-footer p { margin: .25rem 0; }
@media (prefers-reduced-motion: no-preference) { a, .chip, .btn { transition: background-color .15s, border-color .15s, color .15s; } }
@media print { .site-header, .site-footer, .tools { display: none; } body { background: #fff; color: #000; } .card { break-inside: avoid; } }

/* photo, blog, thumbnails */
.hero { display: flex; gap: 1.75rem; align-items: center; flex-wrap: wrap; max-width: 52rem; }
.hero > div { flex: 1 1 22rem; min-width: 0; }
.avatar img, .portrait img { display: block; border-radius: 50%; border: 3px solid var(--border); object-fit: cover; background: #fff; }
.avatar img { width: 160px; height: 160px; }
.portrait { display: block; margin-bottom: 1rem; }
.portrait img { width: 160px; height: 160px; }
.thumb { display: block; width: 100%; height: auto; border-radius: 6px; border: 1px solid var(--border); margin-bottom: .75rem; background: #111; }
.post h3 { font-size: 1.1rem; margin-bottom: .25rem; }
.post h3 a { color: var(--text); text-decoration: none; }
.post h3 a:hover { color: var(--accent); text-decoration: underline; }
.grid.posts { grid-template-columns: repeat(auto-fill, minmax(min(100%, 22rem), 1fr)); }
.article { max-width: 46rem; }
.article figure { margin: 1rem 0 1.5rem; }
.article figure img { width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--border); background: #111; }
.article figcaption { color: var(--muted); font-size: .85rem; margin-top: .4rem; }
.steps { padding-left: 1.25rem; } .steps li { margin: .5rem 0; }

/* homepage: clearer rhythm, icons, stats */
.hero-text { flex: 1 1 22rem; min-width: 0; }
.avatar img { box-shadow: 0 1px 3px rgba(0,0,0,.08); }

.stats { margin-top: 2rem; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
@media (min-width: 40rem) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat { background: var(--surface); padding: 1.1rem 1rem; text-align: center; }
.stat-num { display: block; font: 700 1.6rem var(--mono); color: var(--accent); letter-spacing: -.02em; }
.stat-label { display: block; font-size: .78rem; color: var(--muted); margin-top: .2rem; }

.band { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  margin-left: calc(50% - 50vw); margin-right: calc(50% - 50vw); padding: 2.75rem calc(50vw - 50%) 2.5rem; }
.band > .grid, .band > .section-head, .band > .more { max-width: var(--max); margin-left: auto; margin-right: auto;
  padding-left: 1rem; padding-right: 1rem; }

.section-head { margin: 0 0 1.25rem; }
.section-head h2 { margin: 0 0 .3rem; }
.section-head .meta { margin: 0; }
section.band + section, section + section.band { margin-top: 0; }
.more { margin-top: 1.1rem; }

.card.expertise { display: flex; flex-direction: column; gap: .5rem; }
.icon-circle { display: inline-flex; align-items: center; justify-content: center; width: 2.4rem; height: 2.4rem;
  border-radius: 50%; background: var(--tag-bg); color: var(--accent); flex: 0 0 auto; }
.icon-circle svg { width: 1.3rem; height: 1.3rem; }
.card.expertise h3 { margin-top: .1rem; }

.card { transition: border-color .15s, box-shadow .15s, transform .15s; }
@media (hover: hover) { .card:hover { border-color: var(--accent); box-shadow: 0 2px 10px rgba(0,0,0,.06); transform: translateY(-1px); } }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .card:hover { box-shadow: 0 2px 14px rgba(0,0,0,.35); } }
:root[data-theme="dark"] .card:hover { box-shadow: 0 2px 14px rgba(0,0,0,.35); }

/* embedded YouTube player (privacy-enhanced domain) */
.video-embed { position: relative; width: 100%; padding-top: 56.25%; margin: .75rem 0; border-radius: 6px;
  overflow: hidden; background: #000; border: 1px solid var(--border); }
.video-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.visits { font-size: .8rem; color: var(--muted); opacity: .8; }

/* announcements */
.announcements { margin-top: 1.5rem; display: grid; gap: .75rem; }
.announcement { display: flex; gap: .9rem; align-items: flex-start; background: var(--tag-bg);
  border: 1px solid var(--accent); border-radius: var(--radius); padding: 1rem 1.2rem; }
.announcement h3 { margin: 0 0 .3rem; font-size: 1rem; }
.announcement p { margin: 0 0 .3rem; }
.badge.soon { background: var(--accent); color: var(--accent-ink); flex: 0 0 auto; margin-top: .15rem; }
@media (max-width: 30rem) { .announcement { flex-direction: column; } }