:root {
  --color-ink: #050505;
  --color-paper: #f7f5f0;
  --color-paper-deep: #ede8df;
  --color-white: #ffffff;
  --color-muted: #77736b;
  --color-soft: #aaa49a;
  --color-line: rgba(5, 5, 5, 0.16);
  --color-line-strong: rgba(5, 5, 5, 0.42);
  --color-reverse: #f4f1ea;
  --color-black-panel: #0b0b0b;
  --font-display: "Songti SC", "STSong", Georgia, serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", Menlo, Consolas, monospace;
  --page-pad: 40px;
  --content-width: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--color-ink);
  background:
    linear-gradient(90deg, rgba(5, 5, 5, 0.035) 1px, transparent 1px) 0 0 / 82px 82px,
    linear-gradient(180deg, rgba(5, 5, 5, 0.032) 1px, transparent 1px) 0 0 / 82px 82px,
    var(--color-paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: 0;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 30;
  opacity: 0.26;
  background-image:
    repeating-linear-gradient(
      0deg,
      rgba(5, 5, 5, 0.04) 0,
      rgba(5, 5, 5, 0.04) 1px,
      transparent 1px,
      transparent 4px
    );
  mix-blend-mode: multiply;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

img {
  display: block;
  max-width: 100%;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  transform: translateY(-140%);
  background: var(--color-ink);
  color: var(--color-reverse);
  padding: 10px 14px;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 74px;
  padding: 18px var(--page-pad);
  border-bottom: 1px solid transparent;
  background: rgba(247, 245, 240, 0.76);
  backdrop-filter: blur(18px);
  transition: border-color 180ms ease, background 180ms ease;
}

.site-header.is-scrolled {
  border-color: var(--color-line);
  background: rgba(247, 245, 240, 0.92);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  text-transform: uppercase;
  font-family: var(--font-mono);
  font-size: 12px;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: var(--color-ink);
  color: var(--color-paper);
  font-family: var(--font-display);
  font-size: 13px;
}

.brand-text {
  color: var(--color-muted);
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border: 1px solid var(--color-line);
  background: rgba(255, 255, 255, 0.35);
}

.site-nav a {
  min-height: 34px;
  padding: 6px 12px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  transition: color 160ms ease, background 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active {
  color: var(--color-paper);
  background: var(--color-ink);
  outline: none;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(420px, 0.75fr);
  gap: 48px;
  align-items: center;
  max-width: var(--content-width);
  min-height: calc(100vh - 74px);
  margin: 0 auto;
  padding: 56px var(--page-pad) 44px;
}

.hero-copy {
  position: relative;
  z-index: 1;
}

.eyebrow,
.section-kicker {
  margin: 0 0 20px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-family: var(--font-display);
  font-size: 112px;
  font-weight: 500;
  line-height: 0.96;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.hero h1 span {
  display: block;
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.4;
  text-transform: uppercase;
}

.hero-subtitle {
  display: flex;
  flex-wrap: wrap;
  gap: 0 12px;
  max-width: 720px;
  margin: 36px 0 0;
  font-family: var(--font-display);
  font-size: 30px;
  line-height: 1.24;
  overflow-wrap: anywhere;
}

.hero-subtitle span:not(:last-child)::after {
  content: "/";
  margin-left: 12px;
}

.hero-lede {
  max-width: 600px;
  margin: 20px 0 0;
  color: #3e3b36;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid var(--color-ink);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.button-dark {
  color: var(--color-paper);
  background: var(--color-ink);
}

.button-dark:hover,
.button-dark:focus-visible {
  color: var(--color-ink);
  background: transparent;
}

.button-light {
  color: var(--color-ink);
  background: transparent;
}

.button-light:hover,
.button-light:focus-visible {
  color: var(--color-paper);
  background: var(--color-ink);
}

.wide {
  width: 100%;
}

.hero-art {
  position: relative;
  margin: 0;
  border: 1px solid var(--color-line-strong);
  background: var(--color-black-panel);
  box-shadow: 22px 22px 0 var(--color-ink);
}

.hero-art img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  filter: grayscale(1) contrast(1.04);
}

.hero-art figcaption {
  position: absolute;
  right: 16px;
  bottom: 14px;
  max-width: 280px;
  color: var(--color-reverse);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
  text-transform: uppercase;
}

.hero-index {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--color-line-strong);
  border-bottom: 1px solid var(--color-line-strong);
}

.hero-index span {
  min-height: 56px;
  padding: 16px 14px;
  border-right: 1px solid var(--color-line);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
}

.hero-index span:last-child {
  border-right: 0;
}

.section {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 106px var(--page-pad);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.7fr) minmax(0, 1fr);
  gap: 74px;
  align-items: start;
}

.section-heading {
  position: sticky;
  top: 112px;
}

.section h2,
.contact-section h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 52px;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: 0;
}

.section-heading p,
.experience-head p,
.contact-copy p {
  margin: 20px 0 0;
  color: #4f4b43;
  font-size: 17px;
}

.focus-list {
  border-top: 1px solid var(--color-line-strong);
}

.focus-item {
  display: grid;
  grid-template-columns: 68px 200px minmax(0, 1fr);
  gap: 28px;
  padding: 30px 0;
  border-bottom: 1px solid var(--color-line);
}

.focus-item span,
.project-item span,
.timeline-list span,
.skill-groups span {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
}

.focus-item h3,
.project-item h3 {
  margin: 0;
  font-size: 20px;
  line-height: 1.35;
}

.focus-item p,
.project-item p {
  margin: 0;
  color: #4b4740;
}

.metrics-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding-top: 0;
  padding-bottom: 0;
  border-top: 1px solid var(--color-line-strong);
  border-bottom: 1px solid var(--color-line-strong);
}

.metric {
  min-height: 170px;
  padding: 28px;
  border-right: 1px solid var(--color-line);
}

.metric:last-child {
  border-right: 0;
}

.metric strong {
  display: block;
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 500;
  line-height: 1;
}

.metric span {
  display: block;
  max-width: 150px;
  margin-top: 22px;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.55;
}

.experience-head {
  display: grid;
  grid-template-columns: minmax(260px, 0.48fr) minmax(0, 1fr);
  gap: 72px;
  align-items: end;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--color-line-strong);
}

.experience-list {
  border-bottom: 1px solid var(--color-line-strong);
}

.experience-item {
  border-bottom: 1px solid var(--color-line);
}

.experience-item:last-child {
  border-bottom: 0;
}

.experience-item summary {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr) 110px;
  gap: 28px;
  align-items: center;
  min-height: 112px;
  padding: 22px 0;
  cursor: pointer;
  list-style: none;
}

.experience-item summary::-webkit-details-marker {
  display: none;
}

.experience-item summary:hover .role-group strong,
.experience-item summary:focus-visible .role-group strong {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 6px;
}

.experience-item summary:focus-visible {
  outline: 2px solid var(--color-ink);
  outline-offset: 4px;
}

.time,
.expand-label {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
}

.role-group {
  min-width: 0;
}

.role-group strong {
  display: block;
  font-size: 22px;
  line-height: 1.35;
}

.role-group em {
  display: block;
  margin-top: 8px;
  color: var(--color-muted);
  font-style: normal;
}

.expand-label {
  justify-self: end;
  min-width: 82px;
  padding: 6px 8px;
  border: 1px solid var(--color-line);
  text-align: center;
}

.experience-body {
  max-width: 820px;
  margin: 0 0 36px 198px;
  padding: 0 0 34px;
}

.experience-body p {
  margin: 0;
  color: #37332e;
  font-size: 17px;
}

.experience-body ul {
  display: grid;
  gap: 8px;
  margin-top: 18px;
  padding-left: 18px;
}

.experience-body li {
  color: #4b4740;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.tags span {
  padding: 5px 8px;
  border: 1px solid var(--color-line-strong);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
}

.project-stack {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--color-line-strong);
}

.project-item {
  padding: 30px 0;
  border-bottom: 1px solid var(--color-line);
}

.project-item h3 {
  margin-top: 12px;
}

.project-item p {
  margin-top: 12px;
}

.education-skills {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 58px;
}

.education-block,
.skills-block {
  padding-top: 38px;
  border-top: 1px solid var(--color-line-strong);
}

.timeline-list {
  display: grid;
  gap: 30px;
  margin-top: 34px;
  list-style: none;
}

.timeline-list li {
  padding-left: 24px;
  border-left: 1px solid var(--color-line-strong);
}

.timeline-list strong {
  display: block;
  margin-top: 10px;
  font-size: 21px;
}

.timeline-list p,
.timeline-list em {
  display: block;
  margin: 8px 0 0;
  color: #4f4b43;
  font-style: normal;
}

.timeline-list em {
  color: var(--color-muted);
  font-size: 14px;
}

.skill-groups {
  display: grid;
  gap: 0;
  margin-top: 34px;
  border-top: 1px solid var(--color-line);
}

.skill-groups div {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--color-line);
}

.skill-groups p {
  margin: 0;
  color: #3e3b36;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.54fr);
  gap: 72px;
  align-items: start;
  max-width: var(--content-width);
  margin: 0 auto 50px;
  padding: 92px var(--page-pad);
  color: var(--color-reverse);
  background: var(--color-ink);
}

.contact-section .section-kicker,
.contact-copy p {
  color: var(--color-soft);
}

.contact-actions {
  display: grid;
  gap: 10px;
}

.contact-line {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 18px;
  width: 100%;
  min-height: 62px;
  padding: 16px 0;
  border: 0;
  border-bottom: 1px solid rgba(244, 241, 234, 0.24);
  color: var(--color-reverse);
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.contact-line span {
  color: var(--color-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
}

.contact-line strong {
  min-width: 0;
  overflow-wrap: anywhere;
  font-weight: 500;
}

.contact-line:hover strong,
.contact-line:focus-visible strong {
  text-decoration: underline;
  text-underline-offset: 6px;
}

.contact-line:focus-visible {
  outline: 2px solid var(--color-reverse);
  outline-offset: 4px;
}

.contact-actions .button-dark {
  margin-top: 14px;
  border-color: var(--color-reverse);
  color: var(--color-ink);
  background: var(--color-reverse);
}

.contact-actions .button-dark:hover,
.contact-actions .button-dark:focus-visible {
  color: var(--color-reverse);
  background: transparent;
}

.copy-status {
  min-height: 24px;
  margin: 4px 0 0;
  color: var(--color-soft);
  font-family: var(--font-mono);
  font-size: 12px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 28px var(--page-pad) 38px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--color-ink);
  text-decoration: underline;
  text-underline-offset: 5px;
  outline: none;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1040px) {
  :root {
    --page-pad: 28px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 70px;
  }

  .hero h1 {
    font-size: 92px;
  }

  .hero-art {
    max-width: 560px;
    box-shadow: 14px 14px 0 var(--color-ink);
  }

  .hero-art img {
    aspect-ratio: 16 / 11;
  }

  .section-grid,
  .experience-head,
  .education-skills,
  .contact-section {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .section-heading {
    position: static;
  }

  .focus-item {
    grid-template-columns: 58px minmax(0, 1fr);
  }

  .focus-item p {
    grid-column: 2;
  }

  .metrics-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .metric:nth-child(2) {
    border-right: 0;
  }

  .metric:nth-child(-n + 2) {
    border-bottom: 1px solid var(--color-line);
  }

  .experience-body {
    margin-left: 0;
  }
}

@media (max-width: 760px) {
  :root {
    --page-pad: 18px;
  }

  body {
    font-size: 15px;
  }

  .site-header {
    align-items: flex-start;
    flex-wrap: wrap;
    min-height: 0;
    padding-top: 14px;
  }

  .brand-text {
    display: none;
  }

  .site-nav {
    order: 2;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    width: 100%;
    max-width: none;
    overflow: visible;
    border: 0;
    border-top: 1px solid var(--color-line);
    background: transparent;
    gap: 2px;
    padding-top: 8px;
  }

  .site-nav a {
    padding-right: 4px;
    padding-left: 4px;
    font-size: 11px;
    text-align: center;
    white-space: nowrap;
  }

  .hero {
    gap: 34px;
    padding-top: 44px;
  }

  .hero h1 {
    font-size: 68px;
  }

  .hero-subtitle {
    font-size: 24px;
  }

  .hero-subtitle {
    display: grid;
    gap: 4px;
  }

  .hero-subtitle span::after {
    content: "";
    margin-left: 0;
  }

  .hero-lede {
    font-size: 16px;
  }

  .hero-art {
    box-shadow: 9px 9px 0 var(--color-ink);
  }

  .hero-art figcaption {
    position: static;
    padding: 12px;
    background: var(--color-black-panel);
  }

  .hero-index {
    grid-template-columns: 1fr 1fr;
  }

  .hero-index span:nth-child(2) {
    border-right: 0;
  }

  .hero-index span:nth-child(-n + 2) {
    border-bottom: 1px solid var(--color-line);
  }

  .section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .section h2,
  .contact-section h2 {
    font-size: 36px;
  }

  .focus-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .focus-item p {
    grid-column: auto;
  }

  .metrics-strip {
    grid-template-columns: 1fr;
  }

  .metric {
    min-height: 126px;
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .metric:last-child {
    border-bottom: 0;
  }

  .experience-item summary {
    grid-template-columns: 1fr;
    gap: 10px;
    align-items: start;
    min-height: 0;
  }

  .role-group strong {
    font-size: 19px;
  }

  .expand-label {
    justify-self: start;
  }

  .skill-groups div,
  .contact-line {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .contact-section {
    margin-bottom: 24px;
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}