:root {
  --paper: #f5f6f8;
  --paper-deep: #e9ecef;
  --surface: #ffffff;
  --ink: #161b18;
  --muted: #5d6660;
  --rule: #cfd5d1;
  --accent: #a8f07a;
  --accent-soft: #ddf8cc;
  --accent-ink: #173d12;
  --dark-panel: #172019;
  --dark-panel-ink: #f3f7f3;
  --radius: 12px;
  --shadow: 0 24px 64px rgba(35, 54, 40, .13);
  --sans: "Helvetica Neue", Helvetica, Arial, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #111512;
    --paper-deep: #1a201b;
    --surface: #1b211d;
    --ink: #edf2ee;
    --muted: #aab4ac;
    --rule: #3a443d;
    --accent: #91da66;
    --accent-soft: #243c25;
    --accent-ink: #d8fac6;
    --dark-panel: #070a08;
    --dark-panel-ink: #f3f7f3;
    --shadow: 0 24px 64px rgba(0, 0, 0, .34);
  }
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  color-scheme: light dark;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

button { font: inherit; }

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: .2em;
}

img { max-width: 100%; }

::selection {
  background: var(--accent);
  color: #11210d;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: .75rem;
  left: .75rem;
  translate: 0 -180%;
  padding: .75rem 1rem;
  border-radius: 8px;
  background: var(--ink);
  color: var(--paper);
}

.skip-link:focus { translate: 0; }

.shell {
  width: min(100% - 40px, 1200px);
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--rule);
}

.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  min-height: 72px;
  align-items: center;
}

.wordmark {
  width: max-content;
  font-size: .93rem;
  white-space: nowrap;
  font-weight: 750;
  letter-spacing: -.04em;
  text-decoration: none;
}

.nav {
  display: flex;
  gap: clamp(1rem, 3vw, 2.8rem);
  align-items: center;
}

.nav a,
.socials a,
.site-footer a {
  position: relative;
  font-size: .8rem;
  font-weight: 650;
  text-decoration: none;
}

.nav a::after,
.socials a::after,
.site-footer a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -.2rem;
  left: 0;
  height: 1px;
  scale: 0 1;
  transform-origin: right;
  background: var(--ink);
  transition: scale .25s ease;
}

.nav a:hover::after,
.socials a:hover::after,
.site-footer a:hover::after {
  scale: 1 1;
  transform-origin: left;
}

.hero {
  display: flex;
  min-height: calc(100dvh - 73px);
  flex-direction: column;
  justify-content: space-between;
  padding-block: clamp(2.2rem, 6vh, 4.5rem) clamp(2rem, 5vh, 4rem);
}

.hero-name h1 {
  display: flex;
  width: 100%;
  margin: 0;
  flex-wrap: wrap;
  align-items: baseline;
  font-size: clamp(4.7rem, 13.8vw, 10.6rem);
  font-weight: 760;
  line-height: .78;
  letter-spacing: -.09em;
  white-space: nowrap;
}

.name-indent {
  margin-left: auto;
  padding-right: .07em;
  color: transparent;
  -webkit-text-stroke: 2px var(--ink);
}

.hero-lower {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr);
  gap: clamp(2rem, 8vw, 7rem);
  align-items: end;
  margin-top: clamp(3.5rem, 9vh, 7rem);
}

.hero-intro { max-width: 34rem; }

.portrait-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.4rem;
}

.portrait {
  width: 66px;
  height: 66px;
  border: 1px solid var(--rule);
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 5px var(--surface);
}

.hero-copy {
  max-width: 30rem;
  margin: 0;
  font-size: clamp(1.25rem, 2.35vw, 2rem);
  font-weight: 560;
  line-height: 1.3;
  letter-spacing: -.035em;
  text-wrap: balance;
}


.hero-actions {
  display: flex;
  gap: .7rem;
  margin-top: 1.75rem;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: .65rem 1.15rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-size: .88rem;
  font-weight: 690;
  text-decoration: none;
  transition: translate .2s ease, background .2s ease, color .2s ease;
}

.button:active { translate: 0 1px; }
.button-solid { background: var(--ink); color: var(--paper); }
.button-solid:hover { background: var(--accent); color: #11210d; }
.button-line:hover { background: var(--surface); }

.desk-demo {
  width: min(100%, 440px);
  justify-self: end;
}

.demo-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-bottom: .75rem;
}

.micro-label,
.project-kicker,
.demo-count {
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .035em;
}

.demo-heading h2 {
  margin: .1rem 0 0;
  font-size: 1.08rem;
  letter-spacing: -.02em;
}

.flashcard {
  position: relative;
  display: block;
  width: 100%;
  height: 250px;
  padding: 0;
  border: 0;
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  perspective: 1100px;
}

.flashcard-inner {
  position: absolute;
  inset: 0;
  display: block;
  transform-style: preserve-3d;
  transition: transform .6s cubic-bezier(.2, .8, .2, 1);
  transition: transform 0.7s linear(0, 0.051, 0.1692, 0.3153, 0.4639, 0.6001, 0.7163, 0.8102, 0.8823, 0.935, 0.9717, 0.9955, 1.0098, 1.0171, 1.0198, 1.0195, 1.0175, 1.0147, 1.0117, 1.0089, 1.0064, 1.0044, 1.0028, 1.0016, 1.0008, 1.0002, 0.9999, 0.9997, 0.9996, 0.9996, 0.9996, 0.9997, 0.9997, 0.9998, 0.9999, 0.9999, 1);   /* spring ω=18 ζ=.78, sampled */
}

.flashcard.is-flipped .flashcard-inner { transform: rotateY(180deg); }

.flash-face {
  position: absolute;
  inset: 0;
  display: flex;
  padding: clamp(1.25rem, 4vw, 2rem);
  border: 1px solid color-mix(in srgb, var(--accent-ink) 28%, transparent);
  border-radius: var(--radius);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  overflow: hidden;
  background: var(--accent);
  color: #11210d;
  box-shadow: var(--shadow);
  text-align: left;
}

.flash-face::after {
  content: "";
  position: absolute;
  right: -56px;
  bottom: -66px;
  width: 170px;
  height: 170px;
  border: 1px solid rgba(20, 60, 16, .22);
  border-radius: 50%;
  box-shadow: 0 0 0 24px rgba(20, 60, 16, .06), 0 0 0 48px rgba(20, 60, 16, .04);
}

/* WebKit lets the front face's z-indexed text show through the back even
   with backface-visibility: hidden, so swap visibility at the 90° point.
   Spring easing (browsers with linear()): 90° at 83ms. Fallback cubic-bezier: 78ms.
   With cubic-bezier(.2, .8, .2, 1) over .6s the card is edge-on at 78ms,
   not at the halfway mark; a later swap leaves both faces hidden. */
.flash-face { transition: visibility 0s linear 78ms; }
@supports (transition-timing-function: linear(0, 1)) {
  .flash-face { transition-delay: 83ms; }
}
.flash-back { visibility: hidden; }
.flashcard.is-flipped .flash-front { visibility: hidden; }
.flashcard.is-flipped .flash-back { visibility: visible; }

.flash-back {
  transform: rotateY(180deg);
  background: var(--dark-panel);
  color: var(--dark-panel-ink);
}

.card-hint,
.word-kind {
  position: relative;
  z-index: 1;
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .03em;
}

.card-word,
.card-meaning {
  position: relative;
  z-index: 1;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1;
  letter-spacing: -.06em;
}

.card-example {
  position: relative;
  z-index: 1;
  max-width: 31ch;
  color: #c6d0c8;
  font-size: .85rem;
  line-height: 1.45;
}

.next-card {
  display: flex;
  width: 100%;
  min-height: 44px;
  align-items: center;
  justify-content: flex-end;
  gap: .5rem;
  margin-top: .5rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font-family: var(--mono);
  font-size: .72rem;
}

.next-card:hover span:last-child { translate: 4px 0; }
.next-card span:last-child { transition: translate .2s ease; }

.work,
.about {
  padding-block: clamp(6rem, 12vw, 10rem);
}

.section-heading {
  margin-bottom: clamp(2.5rem, 6vw, 5rem);
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
}

.section-heading h2 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.35rem, 6vw, 5.6rem);
  font-weight: 650;
  line-height: .98;
  letter-spacing: -.065em;
  text-wrap: balance;
}

.featured-work {
  display: grid;
  grid-template-columns: .72fr 1.28fr;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--accent-soft);
  color: var(--accent-ink);
}

.feature-copy {
  display: flex;
  padding: clamp(1.5rem, 4vw, 3.5rem);
  flex-direction: column;
  justify-content: center;
}

.feature-copy h3,
.project-main h3 {
  margin: .8rem 0 1rem;
  font-size: clamp(2.3rem, 5vw, 5rem);
  line-height: .94;
  letter-spacing: -.065em;
}

.project-lede {
  max-width: 46ch;
  margin: 0;
  color: color-mix(in srgb, currentColor 76%, transparent);
  font-size: 1rem;
  line-height: 1.65;
}

.project-links {
  display: flex;
  gap: 1.3rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.text-link {
  display: inline-flex;
  width: max-content;
  align-items: center;
  gap: .4rem;
  border-bottom: 1px solid currentColor;
  font-family: var(--mono);
  font-size: .76rem;
  font-weight: 650;
  text-decoration: none;
}

.text-link span[aria-hidden] { transition: translate .2s ease; }
.text-link:hover span[aria-hidden] { translate: 3px -3px; }

.feature-media {
  position: relative;
  display: flex;
  min-height: 500px;
  margin: 0;
  padding: clamp(1.5rem, 4vw, 3.5rem) clamp(1.5rem, 4vw, 3.5rem) 0 0;
  align-items: flex-end;
}

.feature-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 5;
  border: 1px solid color-mix(in srgb, var(--accent-ink) 23%, transparent);
  border-bottom: 0;
  border-radius: var(--radius) var(--radius) 0 0;
  object-fit: cover;
  object-position: top;
  box-shadow: var(--shadow);
}

.dashboard-preview figcaption {
  margin-top: .75rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: .7rem;
}

.case-notes { grid-column: 1 / -1; border-top: 1px solid color-mix(in srgb, var(--accent-ink) 18%, transparent); }

.case-notes summary {
  display: flex;
  min-height: 56px;
  align-items: center;
  justify-content: space-between;
  padding: .5rem clamp(1.5rem, 4vw, 3.5rem);
  cursor: pointer;
  font-family: var(--mono);
  font-size: .75rem;
  font-weight: 650;
  list-style: none;
}

.case-notes summary::-webkit-details-marker { display: none; }

.summary-mark {
  position: relative;
  width: 15px;
  height: 15px;
}

.summary-mark::before,
.summary-mark::after {
  content: "";
  position: absolute;
  top: 7px;
  left: 0;
  width: 15px;
  height: 1px;
  background: currentColor;
  transition: rotate .2s ease;
}

.summary-mark::after { rotate: 90deg; }
.case-notes[open] .summary-mark::after { rotate: 0deg; }

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem clamp(2rem, 6vw, 6rem);
  margin: 0;
  padding: 1.2rem clamp(1.5rem, 4vw, 3.5rem) clamp(2rem, 4vw, 3.5rem);
}

.case-grid dt,
.compact-notes dt {
  margin-bottom: .45rem;
  font-family: var(--mono);
  font-size: .74rem;
  font-weight: 700;
}

.case-grid dd,
.compact-notes dd {
  margin: 0;
  color: color-mix(in srgb, currentColor 75%, transparent);
  font-size: .9rem;
  line-height: 1.6;
}

.project-stack { margin-top: clamp(5rem, 10vw, 9rem); }

.project-row {
  display: grid;
  grid-template-columns: 80px minmax(280px, .85fr) minmax(340px, 1.15fr);
  gap: clamp(1.5rem, 5vw, 5rem);
  align-items: center;
  padding-block: clamp(4rem, 8vw, 7rem);
  border-top: 1px solid var(--rule);
}

.project-index {
  align-self: start;
  width: max-content;
  padding: .2rem .5rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: .72rem;
}

.project-main h3 { font-size: clamp(2.5rem, 5.8vw, 5.4rem); }

.compact-notes { margin: 2rem 0; }

.compact-notes div {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 1rem;
  padding: .75rem 0;
  border-top: 1px solid var(--rule);
}

.compact-notes div:last-child { border-bottom: 1px solid var(--rule); }

.process-preview {
  min-width: 0;
  border: 1px solid #303a32;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--dark-panel);
  color: var(--dark-panel-ink);
  box-shadow: var(--shadow);
  rotate: 1.25deg;
}

.terminal-bar {
  display: flex;
  height: 42px;
  margin: 0;
  align-items: center;
  padding-inline: 1rem;
  border-bottom: 1px solid #303a32;
  color: #89968d;
  font-family: var(--mono);
  font-size: .72rem;
}

.process-preview pre {
  min-height: 360px;
  margin: 0;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  font-family: var(--mono);
  font-size: clamp(.72rem, 1.5vw, .9rem);
  line-height: 2;
  white-space: pre-wrap;
}

.code-prompt,
.code-ok { color: var(--accent); }

.project-row-reverse .project-main { grid-column: 3; grid-row: 1; }
.project-row-reverse .dashboard-preview { grid-column: 2; grid-row: 1; }

.dashboard-preview {
  position: relative;
  min-width: 0;
  margin: 0;
  rotate: -1.25deg;
}

.dashboard-preview img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2560 / 2000;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: var(--shadow);
}

.small-work {
  display: grid;
  grid-template-columns: .34fr 1fr;
  gap: clamp(1rem, 6vw, 6rem);
  padding-top: clamp(4rem, 8vw, 7rem);
  border-top: 1px solid var(--rule);
}

.small-work h3 { margin: 0; font-size: 1rem; }
.small-work ul { margin: 0; padding: 0; list-style: none; }

.small-work li {
  display: grid;
  grid-template-columns: 1fr minmax(170px, .35fr);
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule);
  font-size: .92rem;
}

.small-work small,
.small-work li > a {
  align-self: start;
  color: var(--muted);
  font-family: var(--mono);
  font-size: .72rem;
}

.small-work li.motion-item {
  grid-template-columns: 1fr minmax(200px, .42fr);
  align-items: start;
}

.motion-copy strong { display: block; margin-bottom: .4rem; font-size: 1rem; }
.motion-copy p { max-width: 52ch; margin: 0 0 .8rem; color: var(--muted); line-height: 1.6; }
.motion-meta { display: flex; flex-wrap: wrap; align-items: baseline; gap: .4rem 1.2rem; }
.motion-meta a { color: var(--ink); font-family: var(--mono); font-size: .72rem; }

.motion-clip {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: #e8e6e1;
  cursor: pointer;
}

.about { padding-top: 2rem; }

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr);
  gap: clamp(3rem, 10vw, 9rem);
  align-items: start;
}

.principle { margin: 0; }

.principle > p {
  margin: 0;
  font-size: clamp(2rem, 4.4vw, 4.1rem);
  font-weight: 620;
  line-height: 1.03;
  letter-spacing: -.07em;
}

.principle footer {
  max-width: 42ch;
  margin-top: 2rem;
  padding-left: 1.2rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
  font-size: .9rem;
}

.now-list a { text-decoration-color: var(--accent-ink); }

.bio h3 { margin: 0 0 .75rem; font-size: 1rem; }

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

.lang-list li {
  padding: .4rem .85rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: .78rem;
}

.now-grid {
  display: grid;
  grid-template-columns: 1fr minmax(300px, .48fr);
  gap: clamp(3rem, 9vw, 8rem);
  margin-top: clamp(6rem, 12vw, 11rem);
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
}

.now-list { margin: 2rem 0; padding: 0; list-style: none; }

.now-list li {
  display: grid;
  grid-template-columns: minmax(160px, .36fr) 1fr;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
  font-size: .9rem;
}

.now-list strong { color: var(--ink); }

.month-note {
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--paper);
}

.month-date { margin: 0; color: var(--accent); font-family: var(--mono); font-size: .75rem; }
.month-note h3 { margin: 1rem 0 2rem; font-size: clamp(2rem, 4vw, 3.7rem); line-height: 1; letter-spacing: -.05em; }
.month-note ul { margin: 0; padding: 0; list-style: none; }
.month-note li { padding: .75rem 0; border-top: 1px solid color-mix(in srgb, var(--paper) 18%, transparent); font-size: .85rem; }

.outside {
  display: grid;
  grid-template-columns: .34fr 1fr;
  gap: clamp(1rem, 6vw, 6rem);
  margin-top: clamp(5rem, 10vw, 9rem);
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
}

.outside > p:last-child {
  max-width: 30ch;
  margin: 0;
  font-size: clamp(1.7rem, 4vw, 3.6rem);
  line-height: 1.2;
  letter-spacing: -.045em;
}

.contact {
  padding-block: clamp(6rem, 14vw, 11rem);
  background: var(--accent);
  color: #11210d;
}

.contact-inner { display: flex; flex-direction: column; align-items: flex-start; }
.contact .micro-label { color: #275720; }

.contact h2 {
  max-width: 900px;
  margin: 1.4rem 0 1.2rem;
  font-size: clamp(3rem, 9vw, 8.4rem);
  font-weight: 690;
  line-height: .88;
  letter-spacing: -.075em;
}

.contact p:not(.micro-label) { max-width: 42ch; margin: 0; }

.email-link {
  margin-top: clamp(2.5rem, 6vw, 5rem);
  border-bottom: 2px solid currentColor;
  font-size: clamp(1.1rem, 4vw, 2.4rem);
  font-weight: 650;
  letter-spacing: -.035em;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.email-link span[aria-hidden] { display: inline-block; transition: translate .2s ease; }
.email-link:hover span[aria-hidden] { translate: 4px -4px; }

.socials { display: flex; gap: 1.5rem; margin-top: 3rem; flex-wrap: wrap; }
.socials a::after { background: currentColor; }

.site-footer { background: var(--dark-panel); color: #bac4bc; }
.site-footer .shell { display: flex; min-height: 90px; align-items: center; justify-content: space-between; gap: 1rem; }
.site-footer p { margin: 0; font-family: var(--mono); font-size: .72rem; }

.hero-copy,
.section-heading h2,
.principle > p,
.contact h2,
.month-note h3,
.outside > p:last-child {
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.hero-in { animation: hero-in .8s cubic-bezier(.2, .8, .2, 1) both; }
.hero-in.d1 { animation-delay: .08s; }
.hero-in.d2 { animation-delay: .16s; }

@keyframes hero-in {
  from { opacity: 0; translate: 0 18px; }
}

.js .reveal {
  opacity: 0;
  translate: 0 18px;
  transition: opacity .7s ease, translate .7s cubic-bezier(.2, .8, .2, 1);
}

.js .reveal.is-visible { opacity: 1; translate: 0; }

@media (max-width: 900px) {
  .hero { min-height: auto; }
  .hero-lower { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .featured-work { grid-template-columns: 1fr; }
  .feature-media { min-height: auto; padding-left: clamp(1.5rem, 4vw, 3.5rem); }
  .project-row { grid-template-columns: 54px 1fr; }
  .project-main { grid-column: 2; }
  .process-preview,
  .dashboard-preview { grid-column: 2; margin-top: 1rem; }
  .project-row-reverse .project-main { grid-column: 2; grid-row: 1; }
  .project-row-reverse .dashboard-preview { grid-column: 2; grid-row: 2; }
  .about-grid { grid-template-columns: 1fr; }
  .bio { max-width: 42rem; margin-left: auto; }
  .now-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .shell { width: min(100% - 32px, 1200px); }
  .header-inner { grid-template-columns: auto 1fr auto; min-height: 64px; }
  .nav { justify-self: center; gap: .9rem; }
  .nav a { font-size: .72rem; }
  .wordmark { font-size: .82rem; }
  .hero { min-height: calc(100dvh - 65px); padding-top: 2rem; }
  .hero-name h1 { display: block; font-size: clamp(4.5rem, 25vw, 6.4rem); line-height: .76; white-space: normal; }
  .hero-name h1 span { display: block; }
  .name-indent { width: max-content; margin: .16em 0 0 auto; }
  .hero-lower { grid-template-columns: 1fr; margin-top: 3.8rem; }
  .desk-demo { width: 100%; justify-self: stretch; }
  .flashcard { height: 230px; }
  .section-heading h2 { font-size: clamp(2.6rem, 13vw, 4.2rem); }
  .feature-media { padding-top: 0; }
  .case-grid { grid-template-columns: 1fr; }
  .project-row { grid-template-columns: 1fr; gap: 1.2rem; }
  .project-index,
  .project-main,
  .process-preview,
  .dashboard-preview,
  .project-row-reverse .project-main,
  .project-row-reverse .dashboard-preview { grid-column: 1; grid-row: auto; }
  .project-index { margin-bottom: .5rem; }
  .process-preview,
  .dashboard-preview { rotate: 0deg; }
  .process-preview pre { min-height: 300px; }
  .small-work,
  .outside { grid-template-columns: 1fr; gap: 1.4rem; }
  .small-work li { grid-template-columns: 1fr; }
  .small-work li.motion-item { grid-template-columns: 1fr; }
  .motion-clip { max-width: 360px; }
  .principle > p { font-size: clamp(2rem, 9.5vw, 4.1rem); }
  .now-list li { grid-template-columns: 1fr; gap: .35rem; }
  .contact h2 { font-size: clamp(3.4rem, 16vw, 5.7rem); }
  .site-footer .shell { align-items: flex-start; flex-direction: column; justify-content: center; }
}

@media (max-width: 410px) {
  .nav { gap: .65rem; }
  .hero-copy { font-size: 1.18rem; }
  .portrait { width: 58px; height: 58px; }
  .featured-work { margin-inline: -4px; }
  .feature-copy { padding-inline: 1.25rem; }
  .feature-media { padding-inline: 1.25rem; }
  .case-notes summary,
  .case-grid { padding-inline: 1.25rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
  .js .reveal { opacity: 1; translate: none; }
  .flash-face { transition-delay: 0s !important; }
}

.not-found {
  display: flex;
  min-height: calc(100dvh - 73px - 90px);
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding-block: 4rem;
}

.not-found-code {
  margin: 0;
  color: transparent;
  font-size: clamp(6rem, 22vw, 16rem);
  font-weight: 760;
  line-height: .8;
  letter-spacing: .04em;
  -webkit-text-stroke: 2px var(--ink);
}

.not-found h1 {
  margin: 2.5rem 0 .75rem;
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -.05em;
  word-break: keep-all;
}

.not-found-copy {
  max-width: 42ch;
  margin: 0 0 2rem;
  color: var(--muted);
}