:root {
  --paper: #121110;
  --ink: #f4f0e9;
  --muted: #aaa198;
  --line: #35312c;
  --soft: #1c1a18;
  --accent: #c78b55;
  --display: clamp(3.5rem, 9vw, 9.25rem);
  --heading: clamp(2.5rem, 5.6vw, 6.4rem);
  --gutter: clamp(1.25rem, 4vw, 5rem);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: radial-gradient(circle at 78% -8%, #27201c 0, var(--paper) 34rem); color: var(--ink); font-family: Inter, "Helvetica Neue", Arial, sans-serif; font-size: 16px; line-height: 1.45; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }

.site-header { display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 10; padding: 1.15rem var(--gutter); border-bottom: 1px solid color-mix(in srgb, var(--line) 55%, transparent); background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(12px); }
.wordmark { font-size: .72rem; font-weight: 700; letter-spacing: .12em; }
nav { display: flex; gap: clamp(1rem, 2vw, 2rem); color: var(--muted); font-size: .72rem; letter-spacing: .08em; }
nav a:hover { color: var(--ink); }

.hero, .section, .contact { padding-right: var(--gutter); padding-left: var(--gutter); }
.hero { position: relative; display: grid; min-height: min(820px, calc(100vh - 58px)); align-content: center; overflow: hidden; padding-top: clamp(4rem, 10vw, 10rem); padding-bottom: clamp(5rem, 12vw, 12rem); isolation: isolate; }
.hero::after { position: absolute; z-index: -1; inset: auto 7% 9% auto; width: 22rem; height: 22rem; border-radius: 50%; background: rgba(199, 139, 85, .11); content: ''; filter: blur(56px); }
.hero__copy { position: relative; z-index: 1; max-width: min(61rem, 64vw); }
.hero__visual { position: absolute; z-index: 0; inset: 0; width: 100%; pointer-events: none; transform: none; }
.hero__portrait { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center center; opacity: .9; mask-image: linear-gradient(to right, transparent 0%, #000 25%, #000 100%); }
.eyebrow { margin: 0 0 1.25rem; color: var(--muted); font-size: .68rem; font-weight: 700; letter-spacing: .15em; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-weight: 500; letter-spacing: -.065em; line-height: 1.04; }
h1 { max-width: 13ch; margin-bottom: clamp(2rem, 4vw, 4rem); font-size: var(--display); }
.hero__statement { max-width: 34rem; margin-bottom: 2rem; color: var(--muted); font-size: clamp(1.05rem, 1.7vw, 1.35rem); line-height: 1.45; }
.hero__actions, .contact__actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.button { display: inline-flex; align-items: center; min-height: 2.85rem; padding: 0 1.1rem; border: 1px solid var(--line); font-size: .78rem; font-weight: 700; letter-spacing: .06em; transition: background 180ms ease, border-color 180ms ease, color 180ms ease; }
.button:hover, .button--solid { border-color: var(--accent); background: var(--accent); color: #17120e; }
.button--solid:hover { background: transparent; color: var(--ink); }

.section { padding-top: clamp(5rem, 12vw, 12rem); padding-bottom: clamp(5rem, 12vw, 12rem); }
.section--bordered { border-top: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: minmax(8rem, 1fr) minmax(0, 2fr); gap: 1rem; margin-bottom: clamp(3rem, 7vw, 7rem); }
.section-heading .eyebrow { padding-top: .45rem; }
h2 { margin-bottom: 0; font-size: var(--heading); }

.project-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1rem, 3vw, 3.5rem); }
.project-card { position: relative; overflow: hidden; min-height: 24rem; background: var(--soft); }
.project-card:nth-child(3n + 1) { margin-top: clamp(0rem, 8vw, 8rem); }
.project-card__trigger { display: block; width: 100%; min-height: 24rem; padding: 0; border: 0; background: transparent; color: inherit; cursor: pointer; text-align: left; }
.project-card img, .project-fallback { display: block; width: 100%; height: 100%; min-height: 24rem; object-fit: cover; transition: transform 500ms cubic-bezier(.2,.7,.2,1), filter 300ms ease; }
.project-fallback { display: grid; place-items: center; padding: 2rem; background: linear-gradient(135deg, #3e332b, #201d1a); color: var(--ink); font-size: clamp(1.25rem, 2.5vw, 2.4rem); font-weight: 500; text-align: center; }
.project-card__meta { position: absolute; right: 0; bottom: 0; left: 0; display: grid; gap: .25rem; padding: 1.4rem; background: linear-gradient(transparent, rgba(10, 10, 10, .8)); color: #fff; opacity: 0; transform: translateY(.75rem); transition: opacity 180ms ease, transform 180ms ease; }
.project-card__meta > span:first-child { margin-bottom: .3rem; font-size: .66rem; font-weight: 700; letter-spacing: .12em; }
.project-card__meta strong { font-size: clamp(1.25rem, 2vw, 2rem); font-weight: 500; letter-spacing: -.04em; }
.project-card__meta span { color: rgba(255,255,255,.75); font-size: .76rem; }
.project-card__view { margin-top: .7rem; color: #fff !important; font-size: .7rem !important; font-weight: 700; letter-spacing: .08em; }
.project-card:hover img, .project-card:focus-within img { filter: brightness(.78); transform: scale(1.035); }
.project-card:hover .project-card__meta, .project-card:focus-within .project-card__meta { opacity: 1; transform: translateY(0); }

.case-dialog { width: min(58rem, calc(100% - 2rem)); max-height: calc(100vh - 2rem); padding: 0; border: 0; overflow-y: auto; background: var(--paper); color: var(--ink); box-shadow: 0 1rem 5rem rgba(0,0,0,.25); }
.case-dialog::backdrop { background: rgba(15, 15, 15, .66); backdrop-filter: blur(3px); }
.case-dialog__content { display: block; }
.case-dialog__media { display: block; width: 100%; min-height: 0; background: var(--soft); }
.case-dialog__copy { padding: clamp(2rem, 5vw, 4rem); }
.case-dialog__copy h2 { margin-bottom: 3rem; font-size: clamp(2.75rem, 4vw, 4.5rem); }
.case-dialog dl { margin: 0; border-top: 1px solid var(--line); }
.case-dialog dl div { display: grid; grid-template-columns: 5rem 1fr; gap: .8rem; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.case-dialog dt { color: var(--muted); font-size: .68rem; font-weight: 700; letter-spacing: .08em; }
.case-dialog dd { margin: 0; font-size: .92rem; }
.case-dialog__close { position: absolute; top: 1rem; right: 1rem; display: grid; width: 2.5rem; height: 2.5rem; place-items: center; border: 0; border-radius: 50%; background: rgba(18,17,16,.92); color: var(--ink); cursor: pointer; font-size: 1.8rem; line-height: 1; }

.archive__intro { max-width: 36rem; margin: -2rem 0 clamp(3rem, 7vw, 7rem); color: var(--muted); font-size: 1.05rem; }
.archive-groups { border-top: 1px solid var(--line); }
.archive-group { border-bottom: 1px solid var(--line); }
.archive-group summary { display: flex; align-items: center; justify-content: space-between; padding: 1.15rem 0; cursor: pointer; font-size: clamp(1.15rem, 2vw, 1.7rem); font-weight: 500; letter-spacing: -.04em; list-style: none; }
.archive-group summary::-webkit-details-marker { display: none; }
.archive-group summary span:last-child { color: var(--muted); font-size: .68rem; font-weight: 700; letter-spacing: .1em; }
.archive-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; margin: 0; padding: 0 0 2rem; list-style: none; }
.archive-card--extra { display: none; }
.archive-group.is-expanded .archive-card--extra { display: list-item; }
.archive-group__more { grid-column: 1 / -1; margin-top: .5rem; }
.archive-show-more { padding: .7rem 1rem; border: 1px solid var(--line); background: transparent; color: var(--ink); cursor: pointer; font: inherit; font-size: .76rem; font-weight: 700; letter-spacing: .04em; }
.archive-show-more:hover, .archive-show-more:focus-visible { border-color: var(--accent); background: var(--accent); color: #17120e; }
.archive-card { display: grid; width: 100%; gap: .65rem; padding: 0; border: 0; background: transparent; color: inherit; cursor: pointer; text-align: left; }
.archive-card__preview { display: grid; aspect-ratio: 1 / 1; overflow: hidden; background: var(--soft); }
.archive-card img, .archive-card video { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform 350ms cubic-bezier(.2,.7,.2,1), filter 250ms ease; }
.archive-card:hover img, .archive-card:hover video, .archive-card:focus-visible img, .archive-card:focus-visible video { filter: brightness(.82); transform: scale(1.035); }
.archive-card__title { overflow: hidden; color: var(--ink); font-size: .78rem; font-weight: 700; line-height: 1.35; text-overflow: ellipsis; white-space: nowrap; }
.archive-card__action { color: var(--muted); font-size: .67rem; letter-spacing: .05em; }

.capability-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.capability { display: grid; grid-template-columns: 3.5rem minmax(0, 1fr); column-gap: 1rem; row-gap: .25rem; min-height: 11rem; padding: 1.75rem 0; border-bottom: 1px solid var(--line); }
.capability:nth-child(odd) { padding-right: clamp(1.5rem, 5vw, 5rem); border-right: 1px solid var(--line); }
.capability:nth-child(even) { padding-left: clamp(1.5rem, 5vw, 5rem); }
.capability > span { color: var(--muted); font-size: .72rem; font-weight: 700; letter-spacing: .08em; }
.capability h3, .capability p { grid-column: 2; }
.capability h3 { margin-bottom: 1rem; font-size: clamp(1.25rem, 2vw, 2rem); font-weight: 500; letter-spacing: -.04em; }
.capability p { max-width: 20rem; margin-bottom: 0; color: var(--muted); line-height: 1.65; }

.about { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 8vw, 8rem); border-top: 1px solid var(--line); }
.about .section-heading { display: block; margin-bottom: 0; }
.about__lead { max-width: 32rem; margin-bottom: 4rem; font-size: clamp(1.3rem, 2.2vw, 2.2rem); letter-spacing: -.04em; line-height: 1.15; }
.experience-list { border-top: 1px solid var(--line); }
.experience-item { display: grid; grid-template-columns: 8.5rem 1fr; gap: 1rem; padding: 1.25rem 0; border-bottom: 1px solid var(--line); }
.experience-item > p { color: var(--muted); font-size: .7rem; font-weight: 700; letter-spacing: .08em; }
.experience-item h3 { margin-bottom: .45rem; font-size: 1rem; font-weight: 600; }
.experience-item div p { margin-bottom: 0; color: var(--muted); font-size: .92rem; }
.tool-list { display: flex; flex-wrap: wrap; gap: .5rem; margin: 2rem 0 0; padding: 0; list-style: none; }
.tool-list li { padding: .45rem .65rem; border: 1px solid var(--line); color: var(--muted); font-size: .72rem; }

.contact { padding-top: clamp(6rem, 13vw, 13rem); padding-bottom: clamp(6rem, 13vw, 13rem); background: #090909; color: var(--ink); }
.contact .eyebrow { color: var(--accent); }
.contact h2 { max-width: none; margin-bottom: clamp(3rem, 6vw, 6rem); font-size: clamp(2rem, 4.8vw, 5.5rem); white-space: nowrap; }
.contact__actions { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr); column-gap: clamp(1.5rem, 5vw, 5rem); border-top: 1px solid var(--line); }
.contact__actions a, .contact__wechat { min-width: 0; margin: 0; padding: 1.2rem 0; border-bottom: 1px solid var(--line); color: var(--ink); font-size: clamp(1rem, 1.7vw, 1.35rem); letter-spacing: -.025em; }
.contact__wechat { display: block; }
.contact__resume { display: flex; grid-column: 1 / -1; align-items: center; justify-content: flex-start; gap: .45rem; }
.contact__resume span { color: var(--accent); font-size: 1.2em; line-height: 1; }

footer { display: flex; justify-content: space-between; gap: 1rem; padding: 1.25rem var(--gutter); color: var(--muted); font-size: .7rem; letter-spacing: .06em; }
.back-to-top { position: fixed; right: 1rem; bottom: 1rem; display: grid; width: 2.75rem; height: 2.75rem; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: color-mix(in srgb, var(--paper) 90%, transparent); color: var(--ink); cursor: pointer; transition: transform 180ms ease; }
.back-to-top:hover { transform: translateY(-.2rem); }

@media (max-width: 720px) {
  .site-header { position: static; }
  nav { gap: .75rem; font-size: .63rem; }
  .hero { min-height: 42rem; }
  .hero__copy { max-width: 100%; }
  .hero__visual { top: 0; bottom: 0; width: 100%; opacity: .48; transform: none; }
  .hero__portrait { object-position: 52% center; mask-image: linear-gradient(to bottom, transparent 0%, #000 26%, #000 100%); }
  .section-heading, .about { grid-template-columns: 1fr; }
  .section-heading .eyebrow { padding-top: 0; }
  .project-grid, .capability-grid { grid-template-columns: 1fr; }
  .project-card:nth-child(3n + 1) { margin-top: 0; }
  .project-card, .project-card__trigger, .project-card img, .project-fallback { min-height: 20rem; }
  .project-card__meta { position: static; background: none; color: var(--ink); opacity: 1; transform: none; }
  .project-card__meta span { color: var(--muted); }
  .project-card__view { color: var(--ink) !important; }
  .archive-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .capability:nth-child(odd), .capability:nth-child(even) { padding-right: 0; padding-left: 0; border-right: 0; }
  .capability { min-height: 0; }
  .about .section-heading { display: grid; }
  .about__lead { margin-bottom: 3rem; }
  footer { display: grid; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
}