:root {
  --paper: #f9f8f6;
  --ink: #1c1c1c;
  --muted: rgba(28, 28, 28, 0.6);
  --line: rgba(28, 28, 28, 0.1);
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 100px;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}
a {
  color: inherit;
  text-decoration: none;
}
a.link {
  position: relative;
  display: inline-block;
}
a.link:after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.5s;
}
a.link:hover:after,
a.link:focus-visible:after {
  transform: scaleX(1);
  transform-origin: left;
}
a:focus-visible,
summary:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 6px;
}
.wrap {
  max-width: 1280px;
  margin: auto;
  padding: 0 48px;
}
header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 5;
  background: rgba(249, 248, 246, 0.95);
  border-bottom: 1px solid var(--line);
}
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 84px;
  gap: 24px;
}
.logo {
  font-family: Georgia, serif;
  font-size: 18px;
  letter-spacing: 0.3em;
}
nav .links {
  display: flex;
  gap: 32px;
}
nav .links,
.label,
.more {
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.label {
  color: var(--muted);
}
h1,
h2,
h3,
.serif {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  letter-spacing: -0.05em;
}
h1 {
  font-size: clamp(64px, 10.7vw, 144px);
  line-height: 0.95;
  margin: 46px 0 52px;
}
h2 {
  font-size: clamp(44px, 5vw, 72px);
  line-height: 1.1;
  margin: 0;
}
h3 {
  font-size: clamp(32px, 3.4vw, 48px);
  line-height: 1.15;
  margin: 0 0 24px;
}
p {
  max-width: 65ch;
  margin: 0 0 24px;
  color: rgba(28, 28, 28, 0.8);
}
em {
  font-weight: 400;
  color: var(--muted);
}
section {
  padding: 160px 0;
  border-bottom: 1px solid var(--line);
}
.hero {
  padding-top: 170px;
  padding-bottom: 96px;
}
.hero-foot,
.split {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 96px;
}
.hero-foot p {
  max-width: 440px;
}
.hero-foot .label {
  align-self: end;
}
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 24px;
  margin-bottom: 80px;
}
.work {
  display: grid;
  grid-template-columns: 1fr 4fr 7fr;
  gap: 32px;
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
  transition:
    border-color 0.5s,
    background-color 0.5s;
}
.work:hover {
  border-color: rgba(28, 28, 28, 0.4);
  background: rgba(28, 28, 28, 0.02);
}
.work:hover h3 {
  font-style: italic;
}
.work .number {
  font-family: Georgia, serif;
  font-size: 24px;
  color: var(--muted);
}
.work p {
  max-width: 480px;
}
.meta {
  font-size: 12px;
  color: var(--muted);
  margin-top: 24px;
}
.more {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.more::-webkit-details-marker {
  display: none;
}
.more:after {
  content: "+";
  font-size: 20px;
}
details[open] .more:after {
  content: "−";
}
details p {
  margin-top: 24px;
  font-size: 14px;
}
blockquote {
  font-family: Georgia, serif;
  font-size: clamp(30px, 3.6vw, 48px);
  line-height: 1.3;
  letter-spacing: -0.03em;
  margin: 0 0 40px;
}
.about-body {
  max-width: 480px;
}
.note {
  font-size: 13px;
  color: var(--muted);
}
footer {
  padding: 48px 0;
}
footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  font-size: 12px;
  color: var(--muted);
}
.skip {
  position: fixed;
  left: 24px;
  top: -100px;
  background: var(--paper);
  z-index: 10;
  padding: 12px;
}
.skip:focus {
  top: 10px;
}
@media (max-width: 760px) {
  .wrap {
    padding: 0 24px;
  }
  nav {
    min-height: 76px;
  }
  .logo {
    font-size: 15px;
    letter-spacing: 0.15em;
  }
  nav .links {
    gap: 16px;
    font-size: 10px;
    letter-spacing: 0.1em;
  }
  section {
    padding: 96px 0;
  }
  .hero {
    padding-top: 140px;
  }
  .hero-foot,
  .split {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .section-head {
    display: block;
    margin-bottom: 40px;
  }
  .section-head .label {
    margin-top: 24px;
  }
  .work {
    grid-template-columns: 28px 1fr;
    gap: 20px;
  }
  .work .description {
    grid-column: 2;
  }
  .work h3 {
    margin-bottom: 16px;
  }
  .section-head h2 {
    font-size: 48px;
  }
  footer .wrap {
    flex-direction: column;
    gap: 8px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *:after {
    transition: none !important;
  }
}

.feature {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 64px;
  padding-bottom: 80px;
  border-bottom: 1px solid var(--line);
}
figure {
  margin: 0;
}
figure img {
  width: 100%;
  height: auto;
  display: block;
}
figcaption {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
  margin-top: 16px;
}
.feature h3 {
  font-size: clamp(40px, 4.5vw, 64px);
}
.reading {
  max-width: 760px;
}
.reading section {
  padding: 80px 0;
}
.reading h2 {
  font-size: 42px;
  margin-bottom: 28px;
}
.name {
  font-size: clamp(64px, 10vw, 128px);
}
@media (max-width: 760px) {
  .feature {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
.sider-feature {
  padding-top: 96px;
}
.sider-intro {
  align-self: center;
}
.sider-intro blockquote {
  font-size: clamp(28px, 3vw, 42px);
}
a.more:after {
  content: none;
}
.reading section {
  padding: 96px 0;
}
@media (min-width: 761px) {
  .reading section {
    padding: 160px 0;
  }
}

.project-entry {
  display: grid;
  grid-template-columns: 60px 1fr 40px;
  gap: 32px;
  align-items: center;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
  transition:
    background-color 0.5s,
    border-color 0.5s;
}
.project-entry:hover {
  background: rgba(28, 28, 28, 0.02);
  border-color: rgba(28, 28, 28, 0.4);
}
.project-entry:hover h3 {
  font-style: italic;
}
.project-entry h3 {
  margin: 0 0 8px;
}
.project-entry p {
  margin: 0;
  color: var(--muted);
}
.project-entry .number {
  font-family: Georgia, serif;
  color: var(--muted);
}
.entry-arrow {
  font-size: 28px;
}
.project-media img,
.project-media video {
  width: 100%;
  height: auto;
  display: block;
}
.project-media h2 {
  margin-bottom: 40px;
}
.phone-media {
  max-width: 360px;
  margin: auto;
}
.project-media figure {
  overflow: hidden;
}
.project-media figcaption {
  max-width: 70ch;
}
.project-media a:focus-visible {
  outline-offset: 2px;
}
@media (max-width: 760px) {
  .project-entry {
    grid-template-columns: 26px 1fr 24px;
    gap: 16px;
  }
  .project-entry h3 {
    font-size: 32px;
  }
  .project-entry p {
    font-size: 14px;
  }
}

.project-entry {
  grid-template-columns: 36px minmax(0, 1fr) 32px;
  column-gap: 24px;
  row-gap: 28px;
  padding: 48px 0 64px;
}
.project-cover {
  grid-column: 1/-1;
  display: block;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: rgba(28, 28, 28, 0.025);
}
.project-cover img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 1s;
}
.project-entry:hover .project-cover img {
  transform: scale(1.025);
}
.portrait-cover img {
  padding: 24px;
}
.project-entry .number {
  grid-column: 1;
}
.project-entry h3 {
  font-size: clamp(32px, 4vw, 52px);
}
@media (min-width: 1000px) {
  .project-entry {
    grid-template-columns: minmax(0, 1.3fr) 28px minmax(0, 1fr) 28px;
    gap: 32px;
    align-items: center;
  }
  .project-cover {
    grid-column: 1;
    grid-row: 1;
  }
  .project-entry .number {
    grid-column: 2;
  }
  .project-entry > div {
    grid-column: 3;
  }
  .entry-arrow {
    grid-column: 4;
  }
}
@media (prefers-reduced-motion: reduce) {
  .project-entry:hover .project-cover img {
    transform: none;
  }
}

.inline-media {
  margin-top: 36px;
  margin-bottom: 40px;
}
.inline-media img {
  display: block;
  width: 100%;
  height: auto;
}
.inline-media a {
  display: block;
}
.inline-media.phone-media {
  margin-left: auto;
  margin-right: auto;
}
.inline-media figcaption {
  line-height: 1.75;
}
.inline-media a:focus-visible {
  outline-offset: 4px;
}

.visual-story h2 {
  margin-bottom: 24px;
}
.image-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 64px 40px;
  margin-top: 48px;
}
.image-gallery figure:first-child {
  grid-column: 1/-1;
}
.image-gallery img {
  width: 100%;
  height: auto;
  max-height: 720px;
  object-fit: contain;
  display: block;
}
.image-gallery a {
  display: block;
  background: rgba(28, 28, 28, 0.025);
}
@media (max-width: 760px) {
  .image-gallery {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .image-gallery img {
    max-height: 640px;
  }
}

.github-activity {
  padding-block: 72px;
}
.github-activity h2 {
  margin-bottom: 16px;
}
.calendar-scroll {
  overflow-x: auto;
}
.calendar-scroll img {
  display: block;
  width: 100%;
  min-width: 620px;
  height: auto;
}
.github-activity .note {
  margin-top: 12px;
}

.github-activity .calendar-scroll {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: white;
}

.activity-plate {
  background: white;
  border: 1px solid #e3e3e5;
  padding: clamp(12px, 2vw, 24px);
}
.activity-plate .calendar-scroll {
  padding: 0;
  border: 0;
  border-radius: 0;
}
.activity-plate figcaption {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: clamp(14px, 1.55vw, 20px);
  color: var(--ink);
}
.figure-number,
.activity-key {
  color: #73737f;
}
.figure-number {
  margin-right: 6px;
}
.activity-plate a {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.activity-key,
.activity-key span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.activity-key span {
  gap: 3px;
}
.activity-key i {
  width: 0.9em;
  height: 0.9em;
}
.profile-page {
  background: white;
}
.profile-page .wrap {
  max-width: 920px;
  padding-inline: 18px;
}
.profile-page main.wrap {
  padding: 0;
  border-inline: 1px solid var(--line);
}
.profile-page header {
  position: sticky;
  top: 0;
  background: white;
}
.profile-page nav {
  min-height: 64px;
}
.profile-head,
.profile-bar {
  display: flex;
  gap: 24px;
  align-items: center;
  padding: 24px;
  border-bottom: 1px solid var(--line);
}
.profile-head h1 {
  font-size: clamp(38px, 6vw, 64px);
  margin: 8px 0;
}
.profile-head p,
.profile-bar span {
  margin: 0;
  color: var(--muted);
}
.monogram {
  display: grid;
  place-items: center;
  flex: none;
  width: clamp(68px, 12vw, 120px);
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 50%;
  font: italic 36px Georgia;
}
.profile-bar {
  justify-content: space-between;
  font-size: 14px;
}
.profile-page .github-activity {
  padding: 18px;
}
.profile-page .activity-plate {
  border: 0;
  padding: 0;
}
.calendar-scroll svg {
  display: block;
  width: 100%;
  min-width: 620px;
}
.calendar-scroll rect:hover {
  stroke: #62626b;
}
.profile-page .activity-plate figcaption {
  font-size: 15px;
}
.profile-page #about {
  display: block;
  padding: 36px 24px;
  border-top: 12px double var(--line);
}
.profile-page #about h2 {
  font-size: 36px;
  margin-bottom: 20px;
}
.profile-page #about h2 br,
.profile-page #about blockquote,
.profile-page #about .note {
  display: none;
}
.profile-page .about-body {
  max-width: 70ch;
}
.day-tip {
  position: fixed;
  z-index: 60;
  pointer-events: none;
  padding: 8px 14px;
  border-radius: 6px;
  background: #171719;
  color: white;
  font:
    14px/1.5 Arial,
    sans-serif;
}
.day-tip[hidden] {
  display: none;
}
.profile-head {
  display: grid;
  grid-template-columns: clamp(78px, 19vw, 182px) minmax(0, 1fr);
  align-items: end;
  gap: 14px clamp(12px, 2vw, 24px);
  padding: clamp(32px, 5vw, 68px) 18px 16px;
}
.profile-avatar {
  grid-column: 1;
  grid-row: 1 / 3;
  width: 100%;
  height: auto;
  border-radius: 50%;
  border: 1px solid var(--line);
}
.profile-wordmark {
  grid-column: 2;
  width: 100%;
  height: auto;
}
.profile-identity {
  grid-column: 2;
  border-top: 1px solid var(--line);
}
.profile-head h1 {
  margin: 10px 0 6px;
  font-size: clamp(28px, 4vw, 42px);
}
.profile-head p {
  font-size: clamp(12px, 2vw, 16px);
}
.tech-stack {
  padding: 32px 24px;
}
.tech-stack h2 {
  font-size: 36px;
  margin-bottom: 16px;
}
.tech-stack dl {
  display: grid;
  grid-template-columns: minmax(0, 10rem) 1fr;
  margin: 0;
}
.tech-stack dt,
.tech-stack dd {
  margin: 0;
  padding: 10px 0;
  border-top: 1px solid var(--line);
}
.tech-stack dt {
  font-weight: 600;
}
@media (max-width: 480px) {
  .tech-stack dl {
    grid-template-columns: 1fr;
  }
  .tech-stack dt {
    padding-bottom: 0;
  }
  .tech-stack dd {
    border: 0;
    padding-top: 2px;
  }
}

.project-summaries {
  padding: 36px 24px;
}

.project-summaries h2 {
  font-size: 36px;
}

.project-summaries ul {
  padding: 0;
  margin: 20px 0 0;
  list-style: none;
}

.project-summaries li {
  border-top: 1px solid var(--line);
}

.project-summaries a {
  display: grid;
  grid-template-columns: clamp(76px, 18vw, 128px) 1fr;
  align-items: center;
  gap: clamp(14px, 3vw, 28px);
  padding: 20px 0;
}

.project-summaries img {
  width: 100%;
  height: 86px;
  object-fit: contain;
}

.project-summaries h3 {
  margin: 0 0 4px;
  font-size: 25px;
}

.project-summaries h3 span {
  font-size: 16px;
  color: var(--muted);
}

.project-summaries a:is(:hover, :focus-visible) h3 {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.project-summaries p {
  margin: 0;
  font-size: 15px;
}

/* Project pages share the profile grid and navigation. */
.detail-page main > section,
.detail-page .reading > section {
  padding: 36px 24px;
}

.detail-page .hero {
  padding-block: 48px 32px;
}

.detail-page .hero h1 {
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.07;
  margin: 16px 0 22px;
}

.detail-page h2 {
  font-size: clamp(28px, 4vw, 36px);
  line-height: 1.15;
  margin-bottom: 18px;
}

.detail-page .reading {
  max-width: none;
}

.detail-page p {
  max-width: 70ch;
}

.detail-page .hero-foot {
  display: block;
}

.detail-page section > p:last-child {
  margin-bottom: 0;
}

.detail-page .image-gallery {
  margin-top: 24px;
  gap: 32px 24px;
}

.detail-page .inline-media {
  margin-block: 24px;
}

.detail-page footer {
  padding: 24px 0;
}

@media (max-width: 600px) {
  .detail-page main > section,
  .detail-page .reading > section {
    padding: 28px 18px;
  }
}

.stack-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.stack-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 5px;
  font-size: 14px;
  white-space: nowrap;
}

.stack-chip img {
  object-fit: contain;
  filter: grayscale(1);
}

.github-icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  min-height: 36px;
}

.github-icon-link:hover {
  opacity: 0.7;
}

.profile-page nav .links {
  align-items: center;
}

/* A quiet, tactile motion language for the profile and project pages. */
:root {
  --accent: #9b7653;
  --ease-out: cubic-bezier(.22, 1, .36, 1);
}

::selection {
  background: #e8ded1;
  color: var(--ink);
}

.profile-page header {
  background: rgba(255, 255, 255, .88);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  transition: box-shadow .4s ease, border-color .4s ease;
}

.profile-page header.is-scrolled {
  border-color: rgba(28, 28, 28, .07);
  box-shadow: 0 6px 24px rgba(28, 28, 28, .035);
}

.profile-page header::after {
  content: "";
  position: absolute;
  inset: auto 0 -1px;
  height: 2px;
  background: linear-gradient(90deg, #b7a28d, #5c5147);
  transform: scaleX(var(--reading-progress, 0));
  transform-origin: left;
  pointer-events: none;
}

nav a.link {
  transition: color .25s ease;
}

nav a.link[aria-current]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.profile-head {
  position: relative;
  isolation: isolate;
  background: radial-gradient(ellipse at 10% 55%, #f6f0e8 0, transparent 60%);
}

.profile-head::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(340px circle at var(--pointer-x, 25%) var(--pointer-y, 50%), rgba(195, 164, 129, .16), transparent 75%);
  opacity: 0;
  transition: opacity .65s ease;
  pointer-events: none;
}

.profile-head.is-pointer-active::before {
  opacity: 1;
}

.portrait-frame {
  position: relative;
  grid-column: 1;
  grid-row: 1 / 3;
  align-self: center;
  border-radius: 50%;
  transform: translate(var(--portrait-x, 0px), var(--portrait-y, 0px)) rotate(var(--portrait-tilt, 0deg));
  transition: transform .65s var(--ease-out);
}

.portrait-frame::before,
.portrait-frame::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.portrait-frame::before {
  inset: -7px;
  border: 1px solid rgba(155, 118, 83, .2);
  border-top-color: rgba(155, 118, 83, .65);
  transform: rotate(-35deg);
  transition: transform 1.1s var(--ease-out), border-color .5s ease;
}

.portrait-frame::after {
  width: 6px;
  height: 6px;
  top: 10%;
  right: 10%;
  background: var(--accent);
  box-shadow: 0 0 0 4px #faf6f1;
}

.portrait-frame .profile-avatar {
  display: block;
  box-shadow: 0 8px 24px rgba(90, 67, 45, .08);
  transition: box-shadow .6s ease;
}

.profile-wordmark {
  transition: transform .8s var(--ease-out), filter .8s ease;
}

.github-icon-link {
  border-radius: 50%;
  transition: transform .4s var(--ease-out), background .3s ease;
}

.github-icon-link:hover {
  opacity: 1;
}

.stack-chip {
  background: white;
  transition: transform .4s var(--ease-out), box-shadow .4s ease, border-color .3s ease;
}

.stack-chip img {
  transition: filter .4s ease;
}

.calendar-scroll rect[data-day] {
  rx: 3px;
  transform-box: fill-box;
  transform-origin: center;
  transition: transform .25s var(--ease-out), stroke .25s ease;
}

.project-summaries a {
  position: relative;
  isolation: isolate;
  border-radius: 6px;
}

.project-summaries a::before {
  content: "";
  position: absolute;
  inset: 6px -12px;
  z-index: -1;
  border-radius: 8px;
  background: radial-gradient(420px circle at var(--pointer-x, 50%) var(--pointer-y, 50%), #ede4d7, #f9f7f3 70%);
  opacity: 0;
  transition: opacity .45s ease;
  pointer-events: none;
}

.project-summaries a:is(:hover, :focus-visible) h3 {
  text-decoration: none;
}

.project-summaries a:focus-visible::before {
  opacity: .65;
}

.project-summaries a > img,
.project-summaries a > div,
.project-summaries h3 span {
  transition: transform .6s var(--ease-out), color .3s ease;
}

.project-summaries h3 span {
  display: inline-block;
  margin-left: 4px;
}

@media (hover: hover) and (pointer: fine) {
  nav a.link:hover { color: var(--accent); }
  .profile-head:hover .portrait-frame::before { transform: rotate(35deg); }
  .profile-head:hover .profile-avatar { box-shadow: 0 12px 32px rgba(90, 67, 45, .16); }
  .profile-head:hover .profile-wordmark { transform: translateY(-3px); filter: contrast(1.12); }
  .github-icon-link:hover { transform: translateY(-2px); background: #f4efe9; }
  .stack-chip:hover { transform: translateY(-3px); border-color: #c4b29e; box-shadow: 0 5px 12px rgba(90, 67, 45, .08); }
  .stack-chip:hover img { filter: grayscale(0); }
  .calendar-scroll rect[data-day]:hover { transform: scale(1.16); stroke: var(--accent); stroke-width: 1.5px; }
  .project-summaries a:hover::before { opacity: .65; }
  .project-summaries a:hover > img { transform: translateY(-3px) scale(1.035); }
  .project-summaries a:hover > div { transform: translateX(5px); }
  .project-summaries a:hover h3 span { transform: translate(3px, -3px); color: var(--accent); }
}

@media (max-width: 480px) {
  .profile-page nav { gap: 12px; }
  .profile-page nav .links { gap: 10px; letter-spacing: .04em; }
  .profile-page .logo { font-size: 13px; letter-spacing: .1em; }
}

.profile-page .reveal-pending {
  opacity: 0;
}

@media (prefers-reduced-motion: reduce), print {
  .profile-page .reveal-pending { opacity: 1; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .portrait-frame,
  .portrait-frame::before,
  .profile-wordmark,
  .github-icon-link,
  .stack-chip,
  .calendar-scroll rect[data-day],
  .project-summaries a > img,
  .project-summaries a > div,
  .project-summaries h3 span {
    transform: none !important;
  }
  .profile-head::before { display: none; }
}

@media print {
  .profile-page header { position: static; }
  .profile-page header::after { display: none; }
}