:root {
  --bg:            #0a0e14;
  --surface:       #111820;
  --surface-hover: #141c25;
  --border:        #1e2833;
  --border-strong: #2b3947;

  --text:   #e6edf3;
  --text-2: #b0bcc9;
  --muted:  #7c8a99;

  --accent:     #3b82f6;
  --accent-hi:  #60a5fa;
  --accent-dim: rgba(59, 130, 246, .12);
  --accent-solid:      #2563eb;
  --accent-solid-hi:   #2f6fe0;

  --grad-blue:   linear-gradient(180deg, #2f6fe0, #1d4ed8);
  --grad-blue-hi:linear-gradient(180deg, #3272e2, #1e5fd0);
  --grad-surface:linear-gradient(180deg, #131c26, #0f151d);

  --ok: #3f9d78;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
               "Liberation Mono", monospace;

  --r:    8px;
  --r-sm: 5px;
  --maxw: 1120px;
  --gut:  24px;
  --nav-h: 60px;
  --project-card-h: 180px;
  --project-page-h: calc( var(--project-card-h) * 3 );
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(880px 560px at 50% -6%, rgba(59, 130, 246, .10), transparent 70%),
    linear-gradient(rgba(120, 160, 220, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 160, 220, .055) 1px, transparent 1px);
  background-size: auto, 52px 52px, 52px 52px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .5) 62%, transparent 96%);
  mask-image: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .5) 62%, transparent 96%);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

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

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

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  background: var(--accent); color: #fff;
  padding: 10px 16px; border-radius: var(--r-sm);
  font-size: .875rem; font-weight: 600;
  transition: top .18s ease;
}
.skip-link:focus { top: 12px; }

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.section {
  padding-block: 64px;
  border-top: 1px solid var(--border);
  scroll-margin-top: var(--nav-h);
}

.section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.section__head h2 {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: .01em;
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.section__num {
  font-family: var(--font-mono);
  font-size: .8125rem;
  font-weight: 500;
  color: var(--accent);
}

.section__note {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--muted);
  letter-spacing: .02em;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--accent);
}

.label {
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--muted);
  margin-bottom: 14px;
}

.mono { font-family: var(--font-mono); font-size: .8125rem; letter-spacing: .01em; }

.ic { width: 20px; height: 20px; fill: currentColor; }
.ic--xs { width: 13px; height: 13px; display: inline-block; vertical-align: -1px; }

.reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .4s ease, transform .4s ease;
}
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 14, 20, .82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: nowrap;
}

.nav__brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.nav__links { display: flex; gap: 4px; flex-shrink: 0; }

.nav__mark {
  display: grid;
  place-items: center;
  width: 28px; height: 28px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--accent-hi);
}

.nav__handle {
  font-family: var(--font-mono);
  font-size: .8125rem;
  color: var(--muted);
}

.nav__links a {
  position: relative;
  padding: 6px 10px;
  border-radius: var(--r-sm);
  font-size: .875rem;
  color: var(--text-2);
  transition: color .15s ease, background-color .15s ease;
}
.nav__links a:hover { color: var(--text); background: var(--surface); }
.nav__links a[aria-current] { color: var(--accent-hi); }
.nav__links a[aria-current]::after {
  content: "";
  position: absolute;
  left: 10px; right: 10px; bottom: 1px;
  height: 1px;
  background: var(--accent);
}

.progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 60;
  pointer-events: none;
  opacity: 0;
  transition: opacity .2s ease;
}
.progress.is-on { opacity: 1; }

.progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  background: var(--grad-blue-hi);
  transform: scaleX(0);
  transform-origin: 0 50%;
  will-change: transform;
}

.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 55;
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r);
  background: rgba(17, 24, 32, .9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text-2);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .2s ease, transform .2s ease, color .15s ease, border-color .15s ease;
}
.to-top[hidden] { display: none; }
.to-top.is-on { opacity: 1; transform: none; }
.to-top:hover { color: var(--accent-hi); border-color: var(--accent); }
.to-top .ic { transform: rotate(180deg); }

.hero {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 64px;
  align-items: center;
  padding-block: 88px 96px;
  border-bottom: 1px solid var(--border);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}
.hero::before {
  background:
    radial-gradient(620px 420px at 14% 12%, rgba(59, 130, 246, .17), transparent 68%),
    radial-gradient(520px 380px at 88% 88%, rgba(59, 130, 246, .09), transparent 70%);
}
.hero::after {
  background-image:
    linear-gradient(rgba(120, 160, 220, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 160, 220, .055) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(ellipse 78% 62% at 42% 26%, #000, transparent 78%);
  mask-image: radial-gradient(ellipse 78% 62% at 42% 26%, #000, transparent 78%);
}

.hero__portrait { justify-self: start; }

.hero__frame {
  position: relative;
  width: 260px;
  padding: 1px;
  border: 0;
  border-radius: 13px;
  background: linear-gradient(155deg,
    rgba(96, 165, 250, .85) 0%,
    rgba(59, 130, 246, .35) 38%,
    rgba(59, 130, 246, .06) 68%,
    transparent 100%);
  box-shadow: 0 26px 60px -26px rgba(37, 99, 235, .55);
}
.hero__frame img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 12px;
}

.hero__handle {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--muted);
  text-align: center;
}

.hero__intro > * + * { margin-top: 18px; }

.hero__name {
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 620;
  line-height: 1.02;
  letter-spacing: -.025em;
  margin-top: 20px;
}

.hero__role {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .02em;
  color: var(--text-2);
  padding-left: 12px;
  border-left: 2px solid var(--accent);
}

.hero__bio {
  max-width: 56ch;
  margin-top: 22px;
  color: var(--text-2);
  line-height: 1.72;
}

.socials {
  display: flex;
  gap: 8px;
  margin-top: 28px;
}

.socials a {
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  color: var(--muted);
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.socials a:hover {
  color: var(--accent-hi);
  border-color: var(--accent);
  background: var(--accent-dim);
}

.socials--wide { margin-top: 20px; flex-wrap: wrap; }
.socials--wide a {
  width: auto;
  height: auto;
  min-height: 40px;
  grid-auto-flow: column;
  gap: 9px;
  padding: 9px 14px;
  font-size: .875rem;
  white-space: nowrap;
  color: var(--text-2);
}
.socials--wide a:hover { color: var(--accent-hi); }

.logo-img {
  display: block;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  object-fit: cover;
}

.cta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 32px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r);
  background: linear-gradient(180deg, #141d26, #111820);
  color: var(--text);
  font-size: .9375rem;
  font-weight: 500;
  transition: background .16s ease, border-color .16s ease, color .16s ease;
}
.btn:hover {
  background: linear-gradient(180deg, #18222d, #131b24);
  border-color: var(--muted);
}

.btn--primary {
  background: var(--grad-blue);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 20px -10px rgba(37, 99, 235, .8);
}
.btn--primary:hover {
  background: var(--grad-blue-hi);
  color: #fff;
}

.filters {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 28px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--grad-surface);
}
.filters[hidden] { display: none; }

.filters__label {
  font-family: var(--font-mono);
  font-size: .6875rem;
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--muted);
  flex-shrink: 0;
}

.filters__chips { display: flex; flex-wrap: wrap; gap: 6px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, .015);
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-2);
  transition: color .15s ease, border-color .15s ease, background .15s ease;
}
.chip:hover { color: var(--text); border-color: var(--border-strong); }
.chip__n {
  font-size: .625rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.chip[aria-pressed="true"] {
  color: #fff;
  border-color: transparent;
  background: var(--grad-blue);
}
.chip[aria-pressed="true"] .chip__n { color: #fff; font-size: .5625rem; }

.project[hidden] { display: none; }

.projects__empty {
  padding: 34px 16px;
  text-align: center;
  font-size: .9375rem;
  color: var(--muted);
}
.projects__empty[hidden] { display: none; }

.about {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 56px;
  align-items: start;
}

.about__text p {
  color: var(--text-2);
  line-height: 1.75;
  max-width: 62ch;
}
.about__text p + p { margin-top: 18px; }

.focus-list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding-block: 10px;
  border-bottom: 1px solid var(--border);
  font-size: .9375rem;
  color: var(--text-2);
}
.focus-list li:first-child { border-top: 1px solid var(--border); }

.focus-list__k {
  font-family: var(--font-mono);
  font-size: .6875rem;
  color: var(--accent);
}

.projects {
  border-top: 1px solid var(--border);
  min-height: var(--project-page-h);
}
.projects.is-measuring { min-height: 0; }
.projects.is-measuring .project { min-height: 0; }

.project {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: 24px;
  align-items: start;
  padding: 28px 16px;
  margin-inline: -16px;
  border-bottom: 1px solid var(--border);
  border-radius: var(--r);
  transition: background .18s ease;
  min-height: var(--project-card-h, 180px);
}
.project:hover {
  background: linear-gradient(90deg,
    rgba(59, 130, 246, .085) 0%,
    rgba(59, 130, 246, .03) 38%,
    transparent 72%);
}
.projects .project:first-child { border-top: 0; }

.project__id {
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 500;
  color: var(--accent);
  padding-top: 3px;
}

.project__body { min-width: 0; }

.project__title {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -.005em;
}

.project__desc {
  margin-top: 9px;
  max-width: 68ch;
  color: var(--text-2);
  line-height: 1.7;
}

.project__meta {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--muted);
  white-space: nowrap;
  padding-top: 4px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}
.tags li {
  padding: 3px 9px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: .6875rem;
  color: var(--muted);
}

.project__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 16px;
}
.project__links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--accent-hi);
  transition: color .15s ease;
}
.project__links a:hover { color: var(--text); }

.certs {
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--grad-surface);
  padding: 18px;
}

.certs__track {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.certs__item[hidden] { display: none; }

.certs__card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  align-content: start;
  width: 100%;
  padding: 0;
  text-align: left;
  border-radius: var(--r-sm);
}

.certs__thumb {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  background: var(--bg);
}

.certs__img {
  width: 100%;
  height: auto;
  aspect-ratio: 640 / 453;
  object-fit: cover;
  transition: transform .3s ease, filter .3s ease;
}
.certs__card:hover .certs__img { transform: scale(1.03); filter: brightness(1.12); }

.certs__zoom {
  position: absolute;
  left: 50%;
  bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(10, 14, 20, .82);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  font-family: var(--font-mono);
  font-size: .6875rem;
  color: var(--text);
  white-space: nowrap;
  opacity: 0;
  transform: translate(-50%, 6px);
  transition: opacity .2s ease, transform .2s ease;
}
.certs__card:hover .certs__zoom,
.certs__card:focus-visible .certs__zoom { opacity: 1; transform: translate(-50%, 0); }

.certs__body { min-width: 0; }

.certs__name {
  display: block;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -.005em;
  color: var(--text);
}

.certs__sub {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-2);
}

.certs__id {
  display: block;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: .6875rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--muted);
}

.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 20px;
}
.pager[hidden] { display: none; }

.pager__arrow {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r);
  background: linear-gradient(180deg, #141d26, #111820);
  color: var(--text-2);
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.pager__arrow:hover:not(:disabled) { color: var(--accent-hi); border-color: var(--accent); background: var(--accent-dim); }
.pager__arrow:disabled { opacity: .4; cursor: default; }

.pager__count {
  font-family: var(--font-mono);
  font-size: .8125rem;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  min-width: 4ch;
  text-align: center;
}
.pager__sep { margin-inline: 4px; color: var(--border-strong); }

.lightbox {
  width: min(1000px, calc(100% - 32px));
  max-width: none;
  max-height: calc(100vh - 32px);
  max-height: calc(100dvh - 32px);
  margin: auto;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: var(--r);
  background: var(--surface);
  color: var(--text);
  overflow: hidden;
  box-shadow: 0 40px 90px -40px rgba(0, 0, 0, .9);
}
.lightbox[open] { display: flex; flex-direction: column; }
.lightbox::backdrop {
  background: rgba(4, 7, 11, .82);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

body.is-locked { overflow: hidden; }

.lightbox__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 12px 10px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--grad-surface);
  flex: none;
}

.lightbox__count {
  font-family: var(--font-mono);
  font-size: .75rem;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}
.lightbox__sep { margin-inline: 4px; color: var(--border-strong); }

.lightbox__btn {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  color: var(--text-2);
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.lightbox__btn:hover { color: var(--accent-hi); border-color: var(--accent); background: var(--accent-dim); }

.lightbox__stage {
  position: relative;
  display: grid;
  place-items: center;
  flex: 1;
  min-height: 0;
  padding: 18px 62px;
  background:
    radial-gradient(700px 320px at 50% 0%, rgba(59, 130, 246, .10), transparent 70%),
    var(--bg);
}

.lightbox__img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--bg);
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  display: grid;
  place-items: center;
  width: 40px; height: 40px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r);
  background: rgba(17, 24, 32, .9);
  color: var(--text-2);
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.lightbox__nav[hidden] { display: none; }
.lightbox__nav:hover { color: var(--accent-hi); border-color: var(--accent); background: var(--accent-dim); }
.lightbox__nav--prev { left: 12px; }
.lightbox__nav--next { right: 12px; }

.lightbox__foot {
  padding: 18px 22px 22px;
  border-top: 1px solid var(--border);
  background: var(--grad-surface);
  flex: none;
}

.lightbox__title {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -.005em;
}

.lightbox__sub {
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-2);
}

.lightbox__verify {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--accent-hi);
  transition: color .15s ease;
}
.lightbox__verify[hidden] { display: none; }
.lightbox__verify:hover { color: var(--text); }

.contact {
  position: relative;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background:
    radial-gradient(520px 200px at 10% 0%, rgba(59, 130, 246, .11), transparent 72%),
    var(--grad-surface);
}

.availability {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 28px;
  padding: 10px 18px 10px 15px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: .8125rem;
  color: var(--text-2);
}
.availability__dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 3px rgba(63, 157, 120, .18);
}

.contact__label {
  font-family: var(--font-mono);
  font-size: .6875rem;
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--muted);
}

.contact__row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.contact__email {
  font-family: var(--font-mono);
  font-size: clamp(1.125rem, 3.2vw, 1.5rem);
  letter-spacing: -.01em;
  color: var(--text);
  border-bottom: 1px solid var(--border-strong);
  transition: color .15s ease, border-color .15s ease;
  word-break: break-all;
}
.contact__email:hover { color: var(--accent-hi); border-color: var(--accent); }

.copy {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  font-size: .8125rem;
  color: var(--text-2);
  transition: color .15s ease, border-color .15s ease, background-color .15s ease;
}
.copy:hover { color: var(--text); background: var(--surface-hover); }
.copy.is-done { color: var(--ok); border-color: var(--ok); }
.copy__text { min-width: 4.2em; text-align: left; }

.contact__note {
  min-height: 1.2em;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--ok);
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 40px; padding-block: 64px 72px; }
  .hero__portrait { justify-self: start; }
  .hero__frame { width: 200px; }
  .about { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 720px) {
  :root { --gut: 20px; --project-card-h: 260px; }
  .section { padding-block: 60px; }

  .nav__links { gap: 0; }
  .nav__links a { padding: 6px 8px; font-size: .8125rem; }
  .nav__handle { display: none; }

  .project {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 24px 12px;
    margin-inline: -12px;
  }
  .project__id { padding-top: 0; }
  .project__meta { padding-top: 0; order: 3; }

  .contact { padding: 22px; }

  .certs { padding: 14px; }
  .certs__track { grid-template-columns: 1fr; gap: 20px; }
  .certs__thumb { max-width: 340px; }

  .lightbox { width: calc(100% - 20px); max-height: calc(100vh - 20px); max-height: calc(100dvh - 20px); }
  .lightbox__stage { padding: 14px 12px 64px; }
  .lightbox__nav {
    top: auto;
    bottom: 12px;
    transform: none;
  }
  .lightbox__nav--prev { left: 10px; }
  .lightbox__nav--next { right: 10px; }
  .lightbox__foot { padding: 16px 18px 20px; }
}

@media (pointer: coarse) {
  .nav__brand { min-width: 44px; min-height: 44px; justify-content: center; }
  .nav__links a { padding: 10px; }
  .chip { padding: 10px 14px; }

  .project__links a { padding: 8px 0; }
  .pager__arrow { width: 44px; height: 44px; }
  .certs__zoom { opacity: 1; transform: translate(-50%, 0); }
  .lightbox__btn { width: 40px; height: 40px; }
  .lightbox__nav { width: 46px; height: 46px; }
  .contact__email { padding-block: 4px; }
  .copy { padding: 11px 16px; }
  .socials:not(.socials--wide) a { width: 44px; height: 44px; }
  .socials--wide a { min-height: 44px; }
}

@media (max-width: 380px) {
  .nav__inner { gap: 10px; }
  .nav__links a { padding: 6px 6px; font-size: .75rem; }
  .nav__links a[aria-current]::after { left: 6px; right: 6px; }
  .hero__frame { width: 168px; }
}

@media (max-width: 380px) and (pointer: coarse) {
  .nav__links a { padding: 10px 5px; }
  .nav__links a[aria-current]::after { left: 5px; right: 5px; }
}

@media (max-width: 480px) {
  .nav__inner { gap: 8px; }
  .nav__links {
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  .nav__links::-webkit-scrollbar { display: none; }
  .filters { gap: 10px; padding: 11px 12px; }
  .filters__label { width: 100%; }
  .to-top { right: 14px; bottom: 14px; }
}

@media print {
  :root {
    --bg: #fff;
    --surface: #fff;
    --surface-hover: #fff;
    --border: #ccc;
    --border-strong: #999;
    --text: #111;
    --text-2: #333;
    --muted: #555;
    --accent: #123a8a;
    --accent-hi: #123a8a;
  }

  body { background: #fff; color: #111; font-size: 11pt; }
  .nav, .copy, .cta, .skip-link, .socials--wide, .lightbox { display: none !important; }

  .reveal, .reveal.is-in {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .certs__track { grid-template-columns: 1fr 1fr; gap: 12px; }
  .certs__card { break-inside: avoid; }
  .certs__zoom { display: none; }
  .pager { display: none !important; }
  .certs__item[hidden] { display: block !important; }
  .projects { min-height: 0; }
  .project { min-height: 0; }
  .project[hidden] { display: grid !important; }
  .section, .contact, .project { break-inside: avoid; }
  .project:hover { background: none; }
  .tags li { border-color: #bbb; color: #333; }
  a { color: #111; }
}