/* ════════════════════════════════════════════════════════
   MULTI-AGENT QUANT LAB — "Warm Academic", refined
   Cream journal · navy brand · burgundy accent · Pretendard.
   Design system + components + tasteful motion.
   ════════════════════════════════════════════════════════ */

:root {
  /* palette — clean white, cool neutrals, navy brand, brick accent */
  --paper:    #ffffff;
  --paper-2:  #f7f8fa;
  --paper-3:  #eef1f5;
  --ink:      #14171d;
  --ink-soft: #4c535f;
  --navy:     #1b2a45;
  --navy-2:   #2a3c5e;
  --navy-3:   #41557c;
  --burg:     #a3342a;
  --burg-2:   #c0473c;
  --gold:     #9c7426;
  --green:    #2f6b46;
  --line:     #e7e9ee;
  --line-2:   #f1f2f5;
  --muted:    #828a97;

  /* type */
  --sans: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", system-ui, "Segoe UI", Roboto, sans-serif;
  --serif: var(--sans);
  --body:  var(--sans);

  /* scale */
  --wrap: 1140px;
  --gutter: clamp(28px, 7vw, 48px);
  --section: clamp(60px, 9vw, 122px);
  --r: 6px;
  --r-lg: 16px;

  /* depth */
  --shadow-sm: 0 2px 10px -4px rgba(29,43,70,0.25);
  --shadow:    0 16px 40px -24px rgba(29,43,70,0.45);
  --shadow-lg: 0 36px 80px -40px rgba(29,43,70,0.55);
  --ease: cubic-bezier(.22,.7,.2,1);
}

/* ── i18n switching ─────────────────────────────────────── */
html[data-lang="ko"] [lang="en"] { display: none !important; }
html[data-lang="en"] [lang="ko"] { display: none !important; }
.t > span { display: inline; }

/* ── reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scrollbar-color: var(--navy-3) var(--paper); }
body {
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.68;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
  overflow-wrap: break-word;
  text-wrap: pretty;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
::selection { background: var(--navy); color: #fdfaf2; }

.hero__title, .block__title, .pagehead__title, .pagehead__lede,
.activity__title, .prose h2 {
  text-wrap: balance;
}

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--burg); outline-offset: 3px; border-radius: 3px;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.muted { color: var(--muted); }
.skip { position: absolute; left: -9999px; top: 0; background: var(--navy); color: #fff; padding: 10px 16px; z-index: 100; }
.skip:focus { left: 12px; top: 12px; }

/* ── eyebrow (numbered section label) ───────────────────── */
.eyebrow {
  font-size: 12px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--burg); font-weight: 600;
  display: inline-flex; align-items: center; gap: 12px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: currentColor; opacity: 0.55; }
.eyebrow__no { font-variant-numeric: tabular-nums; opacity: 0.75; }

/* ── header ─────────────────────────────────────────────── */
.site-head {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s, background .3s;
}
.site-head.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px -24px rgba(29,43,70,0.6);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
}
.site-head__in {
  max-width: var(--wrap); margin: 0 auto; padding: 14px var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  transition: padding .3s var(--ease);
}
.is-scrolled .site-head__in { padding-top: 9px; padding-bottom: 9px; }

.brand { display: inline-flex; align-items: center; }
.brand__logo { height: 30px; width: auto; display: block; transition: opacity .2s var(--ease); }
.brand:hover .brand__logo { opacity: 0.7; }

.nav { display: flex; align-items: center; gap: clamp(12px, 2.2vw, 28px); }
.nav__link { font-size: 15px; color: var(--ink-soft); position: relative; padding: 5px 0; transition: color .2s; }
.nav__link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px;
  background: var(--burg); transform: scaleX(0); transform-origin: left; transition: transform .28s var(--ease);
}
.nav__link:hover { color: var(--navy); }
.nav__link:hover::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--navy); font-weight: 600; }
.nav__link.is-active::after { transform: scaleX(1); }

.lang {
  font-family: var(--body); font-size: 13px; cursor: pointer;
  background: transparent; border: 1px solid var(--line); border-radius: 100px;
  padding: 6px 13px; color: var(--muted);
  display: inline-flex; align-items: center; gap: 7px; transition: border-color .2s, color .2s, background .2s;
}
.lang:hover { border-color: var(--navy-2); color: var(--navy); background: var(--paper-2); }
.lang__sep { opacity: 0.4; }
html[data-lang="ko"] .lang [data-lang-set="ko"],
html[data-lang="en"] .lang [data-lang-set="en"] { color: var(--navy); font-weight: 700; }

.navtoggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.navtoggle span { display: block; width: 22px; height: 2px; background: var(--navy); margin: 4px 0; transition: transform .3s var(--ease), opacity .2s; }
.navtoggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.navtoggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.navtoggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ── buttons ────────────────────────────────────────────── */
.btn {
  font-family: var(--body); font-size: 15px; font-weight: 600;
  padding: 12px 24px; border-radius: 100px; border: 1px solid transparent;
  display: inline-flex; align-items: center; gap: 9px;
  transition: transform .2s var(--ease), box-shadow .25s, background .25s, color .2s, border-color .2s;
}
.btn--solid { background: var(--navy); color: #fbf7ee; box-shadow: var(--shadow); }
.btn--solid:hover { transform: translateY(-2px); background: var(--navy-2); box-shadow: var(--shadow-lg); }
.btn--ghost { border-color: var(--line); color: var(--navy); background: color-mix(in srgb, var(--paper-2) 60%, transparent); }
.btn--ghost:hover { border-color: var(--navy); transform: translateY(-2px); background: var(--paper-2); }
.btn .arr { transition: transform .25s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

/* ── hero ───────────────────────────────────────────────── */
.hero { padding: clamp(40px, 7vw, 92px) 0 clamp(26px, 4vw, 48px); position: relative; }
.hero__in { display: grid; grid-template-columns: 1.5fr 0.95fr; gap: clamp(24px, 5vw, 64px); align-items: center; }

.hero .eyebrow { margin-bottom: 22px; }

.hero__title {
  font-weight: 800; font-size: clamp(2.15rem, 5.6vw, 4.1rem);
  line-height: 1.16; letter-spacing: -0.025em; color: var(--navy); margin: 0;
}
.hero__title span { display: block; }
.hero__title em { color: var(--burg); position: relative; }
.hero__lede { margin-top: 22px; max-width: 44ch; color: var(--ink-soft); font-size: clamp(16px, 2.1vw, 19px); }
.hero__cta { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }

.hero__device { position: relative; display: grid; place-items: center; aspect-ratio: 1; }
.hero__device img {
  width: min(248px, 78%); border-radius: var(--r-lg); box-shadow: var(--shadow-lg);
  position: relative; z-index: 3;
}
.hero__device::before { /* soft static glow */
  content: ""; position: absolute; width: 72%; aspect-ratio: 1; border-radius: 50%; z-index: 1;
  background: radial-gradient(circle, rgba(29,43,70,0.18), transparent 68%);
  filter: blur(20px);
}
.hero__ring { position: absolute; inset: 0; z-index: 2; pointer-events: none; }
.hero__ring::before {  /* single, static, understated ring */
  content: ""; position: absolute; inset: 50% auto auto 50%; transform: translate(-50%,-50%);
  width: 104%; aspect-ratio: 1; border-radius: 50%; border: 1px solid var(--line);
}

/* ── section rhythm ─────────────────────────────────────── */
.block { padding: var(--section) 0; position: relative; }
.block--alt { background: var(--paper-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.block__head { margin-bottom: clamp(28px, 4vw, 46px); }
.block__title {
  font-weight: 800; font-size: clamp(1.55rem, 3.8vw, 2.5rem);
  color: var(--navy); margin-top: 16px; letter-spacing: -0.025em; line-height: 1.2; max-width: 24ch;
}
.block__title.draw { position: relative; }

.morelink {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 32px;
  color: var(--burg); font-weight: 600;
}
.morelink .arr { transition: transform .25s var(--ease); }
.morelink:hover .arr { transform: translateX(5px); }

/* ── activity rows (home) ───────────────────────────────── */
.actlist { list-style: none; border-top: 1px solid var(--line); }
.actrow { border-bottom: 1px solid var(--line); }
.actrow a { display: grid; grid-template-columns: auto auto 1fr auto; align-items: center; gap: 18px; padding: 22px 6px; transition: transform .25s var(--ease), color .2s; }
.actrow a:hover { transform: translateX(10px); }
.actrow__date { font-weight: 600; color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; }
.actrow__title { font-weight: 700; font-size: 1.15rem; color: var(--navy); letter-spacing: -0.01em; }
.actrow__go { color: var(--burg); opacity: 0; transform: translateX(-6px); transition: opacity .2s, transform .2s var(--ease); }
.actrow a:hover .actrow__go { opacity: 1; transform: none; }

/* ── kind tags ──────────────────────────────────────────── */
.kind { font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; padding: 4px 11px; border-radius: 100px; white-space: nowrap; }
.kind--session { background: rgba(29,43,70,0.10); color: var(--navy); }
.kind--study   { background: rgba(138,47,47,0.11); color: var(--burg); }
.kind--talk    { background: rgba(47,107,70,0.13); color: var(--green); }

/* ── page head ──────────────────────────────────────────── */
.pagehead { padding: clamp(52px, 8vw, 104px) 0 clamp(26px, 4vw, 44px); border-bottom: 1px solid var(--line); position: relative; }
.pagehead__title { font-weight: 800; font-size: clamp(2.1rem, 5.4vw, 3.5rem); color: var(--navy); margin-top: 18px; line-height: 1.16; letter-spacing: -0.025em; max-width: 20ch; }
.pagehead__lede { margin-top: 20px; max-width: 60ch; color: var(--ink-soft); font-size: clamp(16px, 2vw, 19px); }
.page-body { padding: clamp(44px, 6vw, 76px) 0 clamp(60px, 9vw, 104px); }

/* ── prose ──────────────────────────────────────────────── */
.prose { max-width: 70ch; }
.prose h2 { font-weight: 700; font-size: clamp(1.4rem, 3vw, 1.95rem); color: var(--navy); margin: 1.9em 0 0.5em; letter-spacing: -0.02em; }
.prose h2:first-child { margin-top: 0; }
.prose p { margin: 0.9em 0; }
.prose ul, .prose ol { margin: 0.8em 0 0.8em 1.2em; }
.prose li { margin: 0.45em 0; }
.prose a { color: var(--burg); border-bottom: 1px solid color-mix(in srgb, var(--burg) 40%, transparent); transition: border-color .2s; }
.prose a:hover { border-bottom-color: var(--burg); }
.prose blockquote { font-weight: 600; font-size: 1.2rem; color: var(--navy); border-left: 3px solid var(--burg); padding: 6px 0 6px 22px; margin: 1.5em 0; }
.checks { list-style: none; margin-left: 0 !important; }
.checks li { position: relative; padding-left: 30px; }
.checks li::before { content: "→"; position: absolute; left: 0; color: var(--burg); font-weight: 700; }

/* about two-column */
.cols { display: grid; grid-template-columns: 1.7fr 0.85fr; gap: clamp(28px, 5vw, 68px); align-items: start; }
.col-side { position: sticky; top: 96px; display: grid; gap: 18px; }
.sidecard { background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--r); padding: 24px; box-shadow: var(--shadow-sm); }
.sidecard__quote { font-weight: 600; color: var(--navy); margin-top: 12px; }
.sidecard__facts { color: var(--ink-soft); margin-top: 12px; font-size: 14.5px; line-height: 1.7; }
.sidelinks { list-style: none; margin-top: 12px; display: grid; gap: 9px; }
.sidelinks a { color: var(--ink); border-bottom: 1px solid var(--line); padding-bottom: 7px; display: flex; justify-content: space-between; transition: color .2s, padding-left .2s; }
.sidelinks a:hover { color: var(--burg); padding-left: 4px; }

/* ── people ─────────────────────────────────────────────── */
.people { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: clamp(26px, 3.4vw, 46px) 18px; }
.person { text-align: center; display: flex; flex-direction: column; align-items: center; }
.person__avatar { width: 112px; height: 112px; border-radius: 50%; position: relative; transition: transform .35s var(--ease); }
.person__avatar::after { content: ""; position: absolute; inset: -7px; border-radius: 50%; border: 1px solid var(--line); transition: border-color .3s, transform .35s var(--ease); }
.person:hover .person__avatar { transform: translateY(-4px); }
.person:hover .person__avatar::after { border-color: var(--burg); transform: scale(1.05); }
.person__avatar img, .person__avatar .mono { width: 112px; height: 112px; border-radius: 50%; object-fit: cover; box-shadow: var(--shadow); }
.person__avatar img { filter: grayscale(1) contrast(1.02); transition: filter .4s; }
.person:hover .person__avatar img { filter: grayscale(0); }
/* Touch devices have no hover — keep portraits in full colour so they don't read as memorial photos */
@media (hover: none) { .person__avatar img { filter: none; } }
/* Restrained, uniform navy-family initials (premium; lets real
   photos shine later). Subtle tonal variation, no rainbow. */
.mono { display: grid; place-items: center; font-weight: 700; font-size: 2.3rem; color: #f3f5f9; letter-spacing: -0.02em; position: relative; overflow: hidden; background: var(--navy); }
.mono::before { content: ""; position: absolute; inset: 0; background: linear-gradient(150deg, rgba(255,255,255,0.14), transparent 60%); }
.mono--0, .mono--3 { background: var(--navy); }
.mono--1, .mono--4 { background: #243650; }
.mono--2, .mono--5 { background: #2c3e5c; }
.person__name { font-weight: 700; font-size: 1.2rem; color: var(--navy); margin-top: 18px; letter-spacing: -0.01em; }
.person__role { font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--burg); margin-top: 5px; }
.person__bio { color: var(--ink-soft); font-size: 14px; margin-top: 9px; line-height: 1.55; max-width: 24ch; }
.person__socials { display: flex; gap: 14px; margin-top: 13px; align-items: center; justify-content: center; }
.person__socials a, .person__socials .is-off { display: inline-flex; }
.person__socials img { width: 18px; height: 18px; opacity: 0.5; transition: opacity .2s, transform .2s var(--ease); }
.person__socials a:hover img { opacity: 1; transform: translateY(-2px); }
.person__socials .is-off { cursor: default; }
.person__socials .is-off img { opacity: 0.16; filter: grayscale(1); }

.people--compact .person__avatar, .people--compact .person__avatar img, .people--compact .person__avatar .mono { width: 96px; height: 96px; }
.people--compact .mono { font-size: 2rem; }
.people--compact .person__name { margin-top: 14px; font-size: 1.1rem; }

@media (max-width: 920px) { .people { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .people { grid-template-columns: repeat(2, 1fr); } }

.hint { margin-top: 44px; font-size: 13.5px; }
.hint code { font-family: ui-monospace, Menlo, monospace; background: rgba(29,43,70,0.06); padding: 1px 6px; border-radius: 4px; font-size: 12.5px; }

/* ── activities timeline ────────────────────────────────── */
.timeline { list-style: none; position: relative; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 14px; bottom: 14px; width: 2px; background: linear-gradient(var(--line), var(--line) 70%, transparent); }
.tl { position: relative; padding-left: 38px; }
.tl::before { content: ""; position: absolute; left: 0; top: 32px; width: 16px; height: 16px; border-radius: 50%; background: var(--paper); border: 2px solid var(--burg); transition: transform .25s var(--ease), background .25s; z-index: 1; }
.tl:hover::before { background: var(--burg); transform: scale(1.15); }
.tl__link { display: grid; grid-template-columns: 84px 1fr auto; gap: 22px; align-items: start; padding: 24px 6px; border-bottom: 1px solid var(--line); transition: transform .25s var(--ease); }
.tl:last-child .tl__link { border-bottom: 0; }
.tl__link:hover { transform: translateX(6px); }
.tl__date { text-align: left; }
.tl__date b { display: block; font-weight: 700; font-size: 1.25rem; color: var(--navy); font-variant-numeric: tabular-nums; }
.tl__date i { font-style: normal; font-size: 12px; color: var(--muted); }
.tl__body { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.tl__title { font-weight: 700; font-size: 1.3rem; color: var(--navy); letter-spacing: -0.015em; }
.tl__summary { color: var(--ink-soft); font-size: 15px; max-width: 62ch; }
.tl__go { color: var(--burg); align-self: center; opacity: 0; transform: translateX(-6px); transition: opacity .2s, transform .2s var(--ease); }
.tl__link:hover .tl__go { opacity: 1; transform: none; }

/* ── activity detail ────────────────────────────────────── */
.activity { padding: clamp(36px, 6vw, 64px) 0 clamp(60px, 9vw, 104px); max-width: 760px; }
.backlink { color: var(--muted); font-size: 14px; display: inline-flex; gap: 6px; transition: color .2s, gap .2s; }
.backlink:hover { color: var(--burg); gap: 10px; }
.activity__head { margin: 26px 0 32px; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.activity__head .eyebrow { color: var(--ink-soft); }
.activity__head .eyebrow::before { display: none; }
.activity__head time { color: var(--muted); }
.activity__title { font-weight: 800; font-size: clamp(1.7rem, 4vw, 2.6rem); color: var(--navy); margin: 16px 0 12px; line-height: 1.2; letter-spacing: -0.025em; }
.activity__summary { color: var(--ink-soft); font-size: 18px; }
.taglist { list-style: none; display: flex; gap: 12px; margin-top: 16px; flex-wrap: wrap; }
.taglist li { font-size: 13px; color: var(--muted); }

/* ── footer ─────────────────────────────────────────────── */
.site-foot { border-top: 1px solid var(--line); background: var(--navy); color: #d7dce5; margin-top: 20px; position: relative; }
.site-foot a { color: #eef1f6; }
.site-foot__in { max-width: var(--wrap); margin: 0 auto; padding: clamp(48px, 7vw, 80px) var(--gutter) 28px; display: grid; grid-template-columns: 1.7fr 1fr 1fr; gap: 36px 24px; }
.site-foot__brand { max-width: 38ch; }
.site-foot__brand img { width: 48px; height: 48px; border-radius: 11px; margin-bottom: 16px; box-shadow: var(--shadow); }
.site-foot__brand b { color: #fff; font-weight: 800; font-size: 1.1rem; }
.site-foot__brand p { margin-top: 8px; color: #aab3c4; font-size: 14.5px; }
.fcol h4 { font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase; color: #8b96ab; font-weight: 600; margin-bottom: 16px; }
.fcol ul { list-style: none; display: grid; gap: 10px; }
.fcol a { color: #c6cdda; font-size: 15px; display: inline-flex; align-items: center; gap: 7px; transition: color .2s, gap .2s; }
.fcol a:hover { color: #fff; }
.brandicon { width: 18px; height: 18px; flex: none; opacity: 0.78; transition: opacity .2s, transform .2s var(--ease); }
.fcol a:hover .brandicon { opacity: 1; transform: translateY(-1px); }
.site-foot__bar { max-width: var(--wrap); margin: 0 auto; padding: 20px var(--gutter) 40px; border-top: 1px solid rgba(255,255,255,0.1); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; color: #8b96ab; }
.totop { color: #c6cdda; display: inline-flex; align-items: center; gap: 7px; transition: color .2s; }
.totop:hover { color: #fff; }

/* ── reveal (calm, single gentle fade on load) ──────────── */
.reveal { opacity: 0; transform: translateY(8px); animation: reveal .55s var(--ease) forwards; animation-delay: calc(var(--d, 0) * 55ms + 40ms); }
.person.reveal { animation-delay: calc(var(--i, 0) * 36ms + 60ms); }
@keyframes reveal { to { opacity: 1; transform: none; } }

/* ── responsive ─────────────────────────────────────────── */
@media (max-width: 920px) {
  /* keep the navy mark beside the copy (like desktop), just compact */
  .hero__in { display: flex; align-items: center; gap: clamp(18px, 4vw, 40px); }
  .hero__text { flex: 1 1 auto; min-width: 0; }
  .hero__device { flex: 0 0 auto; aspect-ratio: auto; }
  .hero__device img { width: clamp(78px, 21vw, 132px); }
  .hero__ring { display: none; }
  .cols { grid-template-columns: 1fr; }
  .col-side { position: static; }
  .site-foot__in { grid-template-columns: 1fr 1fr; }
  .site-foot__brand { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .brand__logo { height: 25px; }
  /* compact hero so the navy mark sits beside the copy without crowding */
  .hero__title { font-size: clamp(1.8rem, 7.4vw, 2.35rem); }
  .hero .eyebrow { display: block; font-size: 10.5px; letter-spacing: 0.14em; }
  .hero .eyebrow::before { display: inline-block; vertical-align: middle; margin-right: 10px; }
  .hero__device img { width: clamp(72px, 20vw, 110px); }
  .navtoggle { display: block; order: 3; }
  .nav {
    position: fixed; inset: 62px 0 auto 0; background: var(--paper);
    border-bottom: 1px solid var(--line); flex-direction: column; align-items: flex-start;
    gap: 2px; padding: 14px var(--gutter) 22px;
    transform: translateY(-14px); opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s var(--ease);
    box-shadow: var(--shadow);
  }
  .nav.is-open { transform: none; opacity: 1; pointer-events: auto; }
  .nav__link { font-size: 17px; padding: 11px 0; width: 100%; border-bottom: 1px solid var(--line-2); }
  .nav__link::after { display: none; }
  .lang { margin-top: 12px; align-self: flex-start; }
  .actrow a { grid-template-columns: auto 1fr; row-gap: 6px; }
  .actrow__date { grid-row: 1; }
  .actrow__go { display: none; }
  .tl__link { grid-template-columns: 1fr; gap: 8px; }
  .tl__go { display: none; }
  .site-foot__in { grid-template-columns: 1fr; gap: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  .person__avatar img { filter: grayscale(0); }
  .hero__device img { animation: none; }
}