:root {
  --bg: #ffffff;
  --panel: #f2f2f0;
  --ink: #0a0a0a;
  --muted: #6f6f6b;
  --line: #e0e0dc;
  --serif: Georgia, "Songti SC", "Noto Serif SC", "Source Han Serif SC", "Times New Roman", serif;
  --sans: "PingFang SC", "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, -apple-system, "Helvetica Neue", sans-serif;
  --gutter: clamp(1.25rem, 6vw, 7rem);
  --measure: 34rem;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img, video { max-width: 100%; height: auto; display: block; }

a { color: inherit; }

/* ---------- labels ---------- */

.kicker {
  margin: 0;
  font-size: .8rem;
  font-weight: 500;
  letter-spacing: .34em;
  text-transform: none;
}

.kicker--strong { font-size: .9rem; letter-spacing: .3em; }

/* ---------- top bar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: .9rem var(--gutter);
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
  font-size: .82rem;
}

.topbar__mark {
  font-family: var(--serif);
  font-size: 1rem;
  text-decoration: none;
  letter-spacing: .02em;
}

.topbar__nav {
  display: flex;
  flex: 1;
  justify-content: flex-end;
  gap: clamp(.9rem, 3vw, 2.4rem);
}

.topbar__nav a {
  color: var(--muted);
  text-decoration: none;
  letter-spacing: .12em;
}

.topbar__nav a:hover { color: var(--ink); }

.topbar__lang {
  text-decoration: none;
  letter-spacing: .12em;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .18rem .62rem;
}

/* ---------- hero ---------- */

.hero {
  min-height: calc(100svh - 3.4rem);
  display: grid;
  place-content: center;
  text-align: center;
  gap: clamp(1.5rem, 5vh, 3.5rem);
  padding: 4rem var(--gutter);
  background: var(--panel);
}

.hero__name {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(4rem, 15vw, 9.5rem);
  line-height: .96;
  letter-spacing: -.01em;
}

.hero__role { letter-spacing: .42em; }

/* ---------- sections ---------- */

.section {
  max-width: 78rem;
  margin: 0 auto;
  padding: clamp(4.5rem, 12vh, 9rem) var(--gutter);
}

.section--panel {
  max-width: none;
  background: var(--panel);
}

.section__head { margin-bottom: clamp(2.5rem, 6vh, 4.5rem); }

.section__head p:not(.kicker) {
  max-width: var(--measure);
  margin: 1.4rem 0 0;
  color: var(--muted);
}

.lede { font-size: 1.05rem; }

/* ---------- about ---------- */

.about {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.statement {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 4.4vw, 3rem);
  line-height: 1.28;
  margin: 0 0 1.6rem;
}

.about__text p:not(.statement) { max-width: var(--measure); color: var(--muted); }

.about__portrait { width: clamp(9rem, 22vw, 15rem); }

.about__portrait img { border-radius: 50%; }

/* ---------- logo wall ---------- */

.logos { margin-top: clamp(3.5rem, 9vh, 6.5rem); }

.logos h3 { margin-bottom: 1.8rem; }

.logos__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.logos__grid li {
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  padding: 1.1rem;
  background: var(--bg);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.logos__grid img { max-height: 100%; width: auto; object-fit: contain; }

/* ---------- expertise / background ---------- */

.cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr));
  gap: clamp(2.5rem, 7vw, 6rem);
  max-width: 78rem;
  margin: 0 auto;
}

.col__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  margin: 0 0 1.6rem;
}

.col__sub {
  font-size: .82rem;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--muted);
  margin: 2.4rem 0 .9rem;
}

.list { margin: 0; padding: 0; list-style: none; }

.list li {
  padding: .55rem 0;
  border-bottom: 1px solid var(--line);
  font-size: .95rem;
  letter-spacing: .04em;
}

.section--panel .list li { border-bottom-color: #dcdcd6; }

.list--sub li { display: grid; gap: .15rem; border-bottom: none; padding: .45rem 0; }

.list--sub li span {
  font-size: .78rem;
  letter-spacing: .02em;
  color: var(--muted);
}

.list--inline { display: flex; flex-wrap: wrap; gap: .5rem 1.6rem; }

.list--inline li { border: none; padding: 0; color: var(--muted); }

.list--inline li::before { content: "— "; }

/* ---------- projects ---------- */

.project {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: start;
  padding: clamp(2.5rem, 6vh, 4.5rem) 0;
  border-top: 1px solid var(--line);
}

.project__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.1rem, 5.5vw, 4.2rem);
  line-height: 1.1;
  margin: 0;
}

.project__body p { margin: 0 0 1rem; color: var(--muted); max-width: var(--measure); }

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

.project__note {
  font-size: .78rem !important;
  letter-spacing: .18em;
  color: var(--ink) !important;
  margin-top: 1.6rem !important;
}

.links { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: .5rem 1.8rem; }

.links a {
  font-size: .95rem;
  letter-spacing: .04em;
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  padding-bottom: .12rem;
}

.links a:hover { opacity: .55; }

/* ---------- media ---------- */

.media { margin: 1.8rem 0 0; grid-column: 1 / -1; }

.media video {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #111;
  border: 1px solid var(--line);
}

.media figcaption {
  margin-top: .6rem;
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--muted);
}

.media--pair {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.25rem;
}

.media--pair .media { margin: 0; grid-column: auto; }

/* ---------- contact ---------- */

.contact { text-align: center; }

.contact__title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.6rem, 9vw, 6.5rem);
  line-height: 1.05;
  margin: 0 0 clamp(2rem, 5vh, 3.5rem);
}

.btn {
  display: inline-block;
  padding: .95rem 2.2rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  text-decoration: none;
  font-size: .84rem;
  letter-spacing: .18em;
  transition: background .18s ease, color .18s ease;
}

.btn:hover { background: var(--ink); color: var(--bg); }

.contact__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(2rem, 8vw, 6rem);
  margin: clamp(3rem, 8vh, 5rem) 0 0;
}

.contact__meta div { text-align: left; }

.contact__meta dt {
  font-size: .74rem;
  letter-spacing: .22em;
  color: var(--muted);
  margin-bottom: .3rem;
}

.contact__meta dd {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.35rem;
}

.contact__meta a { text-decoration: none; border-bottom: 1px solid var(--line); }

/* ---------- footer ---------- */

.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .5rem 2rem;
  padding: 2.2rem var(--gutter);
  border-top: 1px solid var(--line);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--muted);
}

.foot p { margin: 0; }

.foot a { color: var(--ink); }

/* ---------- reveal ---------- */

.reveal { opacity: 0; transform: translateY(1.4rem); }

.reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity .7s ease, transform .7s ease;
}

/* ---------- responsive ---------- */

@media (max-width: 56rem) {
  .topbar__nav { display: none; }
  .about, .project { grid-template-columns: 1fr; }
  .about__portrait { width: 8.5rem; order: -1; }
  .project__title { font-size: clamp(2rem, 9vw, 3rem); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}