:root {
  color-scheme: light;
  --paper: #fff;
  --paper-deep: #fff;
  --ink: oklch(17% 0.004 265);
  --muted: oklch(47% 0.006 265);
  --line: oklch(86% 0.004 265);
  --signal: oklch(50% 0.16 30);
  --display: "Iowan Old Style", "Palatino Linotype", "Songti SC", "STSong", serif;
  --body: "Avenir Next", Avenir, "PingFang SC", "Hiragino Sans GB", sans-serif;
  --page-x: clamp(1.25rem, 4.8vw, 5.5rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent calc(100% - 1px), color-mix(in oklch, var(--ink) 3%, transparent) 1px),
    #fff;
  background-size: clamp(4.5rem, 10vw, 9rem) 100%;
  font-family: var(--body);
  font-size: 1rem;
  font-kerning: normal;
  line-height: 1.6;
  overflow-x: hidden;
}

body::before {
  display: none;
}

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

button {
  color: inherit;
  font: inherit;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.65rem 1rem;
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-150%);
  transition: transform 180ms var(--ease);
}

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

.site-header {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 10;
  display: grid;
  width: 100%;
  grid-template-columns: 1fr auto;
  align-items: center;
  padding: 1.35rem var(--page-x);
  border-bottom: 1px solid color-mix(in oklch, var(--ink) 13%, transparent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: clamp(0.8rem, 2vw, 1.5rem);
}

.github-link {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

.github-link svg,
.github-label svg {
  width: 1.15rem;
  fill: currentColor;
  transition: transform 350ms var(--ease);
}

.github-link:hover svg,
.github-contact:hover svg {
  transform: rotate(-8deg) scale(1.08);
}

.wordmark {
  display: inline-flex;
  width: max-content;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.16em;
}

.wordmark i {
  width: 1.75rem;
  height: 1px;
  background: var(--ink);
  transform-origin: left;
  transition: transform 400ms var(--ease);
}

.wordmark:hover i {
  transform: scaleX(1.8);
}

.nav-links {
  display: none;
}

.language-switch {
  display: flex;
  min-height: 44px;
  align-items: center;
  gap: 0.55rem;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.language-option {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  transition: color 220ms ease;
}

.language-option.is-active {
  color: var(--ink);
  font-weight: 600;
}

.language-divider {
  width: 1.6rem;
  height: 1px;
  background: var(--line);
}

.hero {
  position: relative;
  display: flex;
  min-height: 100svh;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(7rem, 14vh, 9rem) var(--page-x) max(2.5rem, env(safe-area-inset-bottom));
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.hero-meta,
.hero-bottom {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.hero-main {
  position: relative;
  z-index: 2;
  display: grid;
  gap: clamp(2.5rem, 7vw, 6rem);
  margin: auto 0;
  padding: clamp(2.5rem, 7vh, 5rem) 0;
}

.hero-title-wrap {
  position: relative;
  z-index: 2;
}

.hero-index {
  margin: 0 0 1rem;
  color: var(--signal);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
}

.hero-title {
  display: flex;
  max-width: 8ch;
  flex-direction: column;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(4rem, 15vw, 8.5rem);
  font-weight: 400;
  letter-spacing: -0.085em;
  line-height: 0.78;
}

.hero-title span:last-child {
  align-self: flex-end;
}

html[lang="en"] .hero-title {
  max-width: 10ch;
  font-size: clamp(3.75rem, 13vw, 7.5rem);
  letter-spacing: -0.07em;
  line-height: 0.8;
}

.hero-roman {
  margin: 1.4rem 0 0 0.2rem;
  color: var(--muted);
  font-size: clamp(0.75rem, 1.2vw, 0.95rem);
  letter-spacing: 0.33em;
  text-transform: uppercase;
}

html[lang="en"] .hero-roman {
  display: none;
}

.hero-statement {
  max-width: 34rem;
  margin: 0;
  color: var(--ink);
  font-family: var(--display);
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  letter-spacing: 0.015em;
  line-height: 1.55;
  text-transform: none;
}

.hero-intro {
  display: grid;
  max-width: 37rem;
  align-content: end;
  gap: 1rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--ink);
}

.hero-status {
  margin: 0;
  color: var(--signal);
  font-family: var(--body);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: 1.5;
  text-transform: uppercase;
}

.hero-interests {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.4rem;
  margin-top: 0.35rem;
  color: var(--muted);
  font-family: var(--body);
  font-size: 0.66rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hero-interests span {
  position: relative;
}

.hero-interests span + span::before {
  position: absolute;
  top: 50%;
  left: -0.8rem;
  width: 0.18rem;
  height: 0.18rem;
  border-radius: 50%;
  background: var(--line);
  content: "";
  transform: translateY(-50%);
}

.scroll-cue {
  display: none;
  align-items: center;
  gap: 0.75rem;
  white-space: nowrap;
}

.scroll-cue svg {
  width: 1.15rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.2;
}

.hero-orbit {
  position: absolute;
  top: 20%;
  right: clamp(-9rem, -7vw, -3rem);
  width: clamp(16rem, 34vw, 33rem);
  aspect-ratio: 1;
  opacity: 0.55;
}

.orbit-ring {
  position: absolute;
  inset: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.orbit-ring::before,
.orbit-ring::after {
  position: absolute;
  content: "";
  background: var(--line);
}

.orbit-ring::before {
  top: 50%;
  left: -8%;
  width: 116%;
  height: 1px;
}

.orbit-ring::after {
  top: -8%;
  left: 50%;
  width: 1px;
  height: 116%;
}

.orbit-dot {
  position: absolute;
  top: 50%;
  left: 0;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--signal);
  transform: translate(-50%, -50%);
  animation: orbit 16s linear infinite;
  transform-origin: calc(clamp(16rem, 34vw, 33rem) / 2) center;
}

.orbit-label {
  position: absolute;
  right: 18%;
  bottom: 18%;
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  transform: rotate(90deg);
}

@keyframes orbit {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

.section {
  position: relative;
  padding: clamp(6rem, 13vw, 11rem) var(--page-x);
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.section-number {
  color: var(--signal);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.profile {
  display: grid;
  gap: 4rem;
}

.section-rail {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.section-rail::after {
  width: min(8rem, 30vw);
  height: 1px;
  content: "";
  background: var(--line);
}

.section-rail span:first-child {
  color: var(--signal);
}

.profile-content {
  display: grid;
  gap: 2rem;
}

.profile-title {
  max-width: 15ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.75rem, 7.5vw, 6.5rem);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 1.02;
}

.profile-copy {
  display: grid;
  max-width: 46rem;
  gap: 3rem;
}

.profile-copy > p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 1.9;
}

.profile-facts {
  display: grid;
  border-top: 1px solid var(--line);
}

.profile-facts div {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.profile-facts span {
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.profile-facts strong {
  font-size: 0.85rem;
  font-weight: 500;
}

.section-heading {
  display: grid;
  gap: 2.5rem;
  margin-bottom: clamp(4rem, 8vw, 7rem);
}

.section-heading > div {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.section-heading h2,
.education-lead h2,
.contact-main h2 {
  max-width: 12ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 400;
  letter-spacing: -0.06em;
  line-height: 0.95;
}

.timeline {
  border-top: 1px solid var(--ink);
}

.timeline-item {
  position: relative;
  display: grid;
  gap: 1.25rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--line);
}

.timeline-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline-main h3 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.75rem, 4vw, 3.5rem);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.timeline-main > p {
  margin: 0.6rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.timeline-details {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 500ms var(--ease);
}

.timeline-details > div {
  overflow: hidden;
}

.timeline-item.is-open .timeline-details {
  grid-template-rows: 1fr;
}

.timeline-details ul {
  display: grid;
  gap: 0.75rem;
  margin: 1.5rem 0 0;
  padding: 0;
  color: var(--muted);
  list-style: none;
}

.timeline-details li {
  position: relative;
  padding-left: 1.25rem;
}

.timeline-details li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 0.35rem;
  height: 1px;
  content: "";
  background: var(--signal);
}

.timeline-toggle {
  display: flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  justify-self: end;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  transition:
    border-color 220ms ease,
    transform 400ms var(--ease);
}

.timeline-toggle::before,
.timeline-toggle::after {
  position: absolute;
  width: 0.8rem;
  height: 1px;
  content: "";
  background: currentColor;
  transition: transform 400ms var(--ease);
}

.timeline-toggle::after {
  transform: rotate(90deg);
}

.timeline-item.is-open .timeline-toggle::after {
  transform: rotate(0);
}

.timeline-item.is-open .timeline-toggle {
  transform: rotate(180deg);
}

.education {
  display: grid;
  gap: clamp(4rem, 10vw, 9rem);
  background: #fff;
}

.education-lead {
  display: grid;
  gap: 1.2rem;
}

.record-school {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem 2rem;
  margin-bottom: 0.25rem;
}

.university-identity {
  display: inline-flex;
  width: max-content;
  align-items: center;
  flex: 0 0 auto;
  gap: 0.7rem;
  font-family: var(--display);
  font-size: 0.78rem;
  letter-spacing: -0.025em;
  line-height: 1.05;
}

.university-identity img {
  width: 2.7rem;
  aspect-ratio: 1;
}

.university-identity span {
  padding-left: 0.7rem;
  border-left: 1px solid var(--ink);
}

.education-body {
  display: grid;
  align-content: start;
  gap: 3rem;
}

.education-record {
  display: grid;
  gap: 1.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ink);
}

.record-date {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
}

.education-record h3 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.9rem, 4vw, 3.4rem);
  font-weight: 400;
  letter-spacing: -0.04em;
}

.education-record p {
  margin: 0.35rem 0 0;
}

.record-note {
  color: var(--muted);
  font-size: 0.85rem;
}

.course-field,
.skills-field {
  display: grid;
  gap: 1rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.course-field > span,
.skills-field > span {
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.course-field p {
  max-width: 37rem;
  margin: 0;
  line-height: 1.9;
}

.skills-field ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.skills-field li {
  font-family: var(--display);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
}

.skills-field li::after {
  margin-left: 1.2rem;
  color: var(--signal);
  content: "·";
}

.skills-field li:last-child::after {
  display: none;
}

.contact {
  display: grid;
  gap: 4rem;
  min-height: 88svh;
  align-content: center;
}

.contact-side {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.contact-side .section-number {
  color: var(--signal);
}

.contact-main {
  display: grid;
  gap: 1.5rem;
}

.contact-main h2 {
  max-width: 15ch;
}

.email-link {
  display: grid;
  max-width: 56rem;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 1rem;
  margin-top: 2rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--ink);
  font-family: var(--display);
  font-size: clamp(1.65rem, 5.5vw, 5rem);
  letter-spacing: -0.05em;
  line-height: 1;
}

.email-link svg {
  width: clamp(1.5rem, 3vw, 2.5rem);
  fill: none;
  stroke: currentColor;
  stroke-width: 1;
  transition: transform 400ms var(--ease);
}

.email-link:hover svg {
  transform: translate(0.3rem, -0.3rem);
}

.contact-actions {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.github-label {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
}

.download-link,
.plain-link {
  display: flex;
  min-height: 3.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-bottom: 1px solid var(--line);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.download-link {
  color: var(--signal);
}

footer {
  display: grid;
  gap: 0.75rem;
  padding: 2rem var(--page-x) max(2rem, env(safe-area-inset-bottom));
  color: var(--muted);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition:
    opacity 800ms var(--ease),
    transform 800ms var(--ease);
}

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

@media (min-width: 48rem) {
  .site-header {
    grid-template-columns: 1fr auto 1fr;
  }

  .nav-links {
    display: flex;
    gap: clamp(1.5rem, 3vw, 3.5rem);
  }

  .nav-links a {
    position: relative;
    display: flex;
    min-height: 44px;
    align-items: center;
    color: var(--muted);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    transition: color 220ms ease;
  }

  .nav-links a::after {
    position: absolute;
    bottom: 0.45rem;
    left: 0;
    width: 100%;
    height: 1px;
    content: "";
    background: currentColor;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 300ms var(--ease);
  }

  .nav-links a:hover,
  .nav-links a.is-current {
    color: var(--ink);
  }

  .nav-links a:hover::after,
  .nav-links a.is-current::after {
    transform: scaleX(1);
    transform-origin: left;
  }

  .header-actions {
    justify-self: end;
  }

  .scroll-cue {
    display: flex;
    align-self: end;
    margin-left: auto;
  }

  .hero-main {
    grid-template-columns: minmax(20rem, 0.9fr) minmax(22rem, 0.75fr);
    align-items: end;
  }

  .hero-intro {
    margin-bottom: 0.35rem;
  }

  .profile {
    grid-template-columns: minmax(7rem, 0.7fr) 3fr;
  }

  .section-rail {
    align-self: stretch;
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 0.5rem;
  }

  .section-rail::after {
    width: 1px;
    height: 8rem;
  }

  .profile-content {
    grid-template-columns: minmax(12rem, 1fr) 2fr;
  }

  .profile-title {
    grid-column: 1 / -1;
  }

  .profile-copy {
    grid-column: 2;
  }

  .section-heading {
    grid-template-columns: 1fr 2fr;
    align-items: end;
  }

  .timeline-item {
    grid-template-columns: minmax(9rem, 0.7fr) 2fr 44px;
    align-items: start;
    gap: clamp(1.5rem, 4vw, 4rem);
  }

  .timeline-meta {
    flex-direction: column;
    justify-content: flex-start;
  }

  .timeline-toggle {
    margin-top: 0.2rem;
  }

  .timeline-details {
    grid-column: 2;
  }

  .timeline-details ul {
    max-width: 45rem;
  }

  .education {
    grid-template-columns: 1fr 1.15fr;
  }

  .education-record {
    grid-template-columns: 7rem 1fr;
  }

  .contact {
    grid-template-columns: minmax(9rem, 0.55fr) 2fr;
  }

  .contact-side {
    min-height: 100%;
    flex-direction: column;
    justify-content: space-between;
  }

  .contact-actions {
    max-width: 56rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 3rem;
  }

  footer {
    grid-template-columns: 1fr auto 1fr;
  }

  footer a {
    justify-self: end;
  }
}

@media (min-width: 75rem) {
  .hero-title {
    max-width: none;
    flex-direction: row;
    gap: 0.1em;
  }

  .hero-title span:last-child {
    align-self: auto;
  }

  html[lang="en"] .hero-title {
    max-width: none;
  }

  .email-break {
    display: none;
  }
}

@media (hover: hover) {
  .timeline-item:hover .timeline-toggle {
    border-color: var(--ink);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}