:root {
  --bg: #f2ebdf;
  --surface: #ffffff;
  --surface-alt: #ece1d2;
  --surface-soft: #f8f3eb;
  --panel: #fffdf8;
  --text: #111111;
  --muted: #505050;
  --muted-strong: #373737;
  --line: #111111;
  --red: #d5281f;
  --blue: #0058b8;
  --yellow: #f2c100;
  --shadow-sm: 5px 5px 0 #111111;
  --shadow-md: 9px 9px 0 #111111;
  --shadow-lg: 14px 14px 0 #111111;
  --shadow-xl: 18px 18px 0 #111111;
  --max-width: 1240px;
  --nav-height: 88px;
  --display-font: "Space Grotesk", "IBM Plex Sans", sans-serif;
  --body-font: "IBM Plex Sans", "Noto Sans SC", sans-serif;
  --mono-font: "IBM Plex Mono", monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(to right, rgba(17, 17, 17, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(17, 17, 17, 0.08) 1px, transparent 1px),
    var(--bg);
  background-size: 34px 34px;
  color: var(--text);
  font-family: var(--body-font);
  font-size: 16px;
  line-height: 1.58;
}

body.lang-zh {
  font-family: "Noto Sans SC", "IBM Plex Sans", sans-serif;
  line-height: 1.7;
}

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

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 200;
  padding: 0.75rem 1rem;
  border: 3px solid var(--line);
  background: var(--red);
  color: #fff;
  font-weight: 700;
  transform: translateY(-140%);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.skip-link:focus {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.grid-shell {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
}

.section {
  position: relative;
  padding: 7.5rem 0;
  scroll-margin-top: 6rem;
}

.section > .grid-shell {
  position: relative;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(242, 235, 223, 0.96);
  border-bottom: 3px solid var(--line);
  backdrop-filter: blur(10px);
}

.navbar {
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border: 3px solid var(--line);
  background: var(--blue);
  color: #fff;
  font-family: var(--mono-font);
  font-weight: 700;
}

.brand-copy {
  display: grid;
  gap: 0.16rem;
}

.brand-title {
  font-family: var(--display-font);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.3;
}

.nav-panel {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-links {
  display: flex;
  gap: 1.2rem;
}

.nav-links a {
  position: relative;
  font-family: var(--display-font);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.38rem;
  height: 3px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.24s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  transform: scaleX(1);
}

.language-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.85rem;
  padding: 0.4rem 0.82rem;
  border: 3px solid var(--line);
  background: var(--surface);
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.22s ease, background 0.22s ease;
}

.language-toggle:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-sm);
}

.lang-option {
  opacity: 0.55;
  font-weight: 700;
}

.lang-option.active {
  opacity: 1;
  color: var(--blue);
}

.lang-divider {
  color: var(--muted);
}

.nav-toggle {
  display: none;
  border: 3px solid var(--line);
  background: var(--surface);
  padding: 0.35rem 0.55rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.4rem;
  height: 2px;
  margin: 0.28rem 0;
  background: var(--text);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.eyebrow {
  display: inline-block;
  margin: 0;
  padding: 0.32rem 0.58rem;
  border: 2px solid var(--line);
  background: var(--yellow);
  font-family: var(--mono-font);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  line-height: 1.2;
}

.hero-grid,
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(330px, 0.94fr);
  gap: 2rem;
  align-items: start;
}

.hero-copy h1,
.section-heading h2 {
  margin: 0;
  font-family: var(--display-font);
  line-height: 0.9;
  letter-spacing: -0.07em;
  text-wrap: balance;
}

.hero-copy h1 {
  max-width: 7.5ch;
  font-size: clamp(3.9rem, 11vw, 7.6rem);
}

.section-heading {
  display: grid;
  gap: 0.95rem;
  margin-bottom: 2.9rem;
}

.section-heading h2 {
  max-width: 10ch;
  font-size: clamp(2.7rem, 5.8vw, 4.8rem);
}

.section-heading p {
  margin: 0;
  max-width: 68ch;
  color: var(--muted-strong);
  font-size: 1rem;
  line-height: 1.6;
}

.hero-title {
  margin: 1.1rem 0 1rem;
  max-width: 20ch;
  font-family: var(--display-font);
  font-size: clamp(1.35rem, 2.45vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.hero-name {
  display: flex;
  align-items: baseline;
  gap: 0.42em;
  flex-wrap: wrap;
}

.name-en {
  font-weight: 800;
  font-size: 1em;
}

.name-zh {
  font-weight: 600;
  font-size: 0.68em;
  opacity: 0.72;
}

.hero-description,
.about-card p,
.project-summary,
.project-body p,
.project-body li,
.contact-card a,
.domain-summary,
.domain-description,
.domain-value {
  color: var(--muted-strong);
}

.hero-description,
.about-card p {
  margin: 0;
  max-width: 64ch;
  font-size: 1.02rem;
  line-height: 1.64;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2.25rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.3rem;
  padding: 0.95rem 1.45rem;
  border: 3px solid var(--line);
  font-family: var(--display-font);
  font-weight: 700;
  letter-spacing: -0.02em;
  transition: transform 0.2s ease, box-shadow 0.24s ease, background 0.24s ease;
}

.button:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-sm);
}

.button-primary {
  background: var(--red);
  color: #fff;
}

.button-secondary {
  background: var(--surface);
}

.hero-panel,
.about-card,
.domain-card,
.contact-card,
.project-item {
  border: 3px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

#home {
  background:
    linear-gradient(135deg, rgba(0, 88, 184, 0.1) 0 18%, transparent 18% 100%),
    linear-gradient(180deg, transparent 0 84%, rgba(242, 193, 0, 0.18) 84% 100%);
}

.hero-panel {
  position: relative;
  padding: 1.5rem;
  background:
    linear-gradient(145deg, var(--surface) 0 62%, rgba(0, 88, 184, 0.12) 62% 100%);
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.hero-panel:hover {
  transform: translate(-4px, -4px);
  box-shadow: var(--shadow-xl);
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.1rem;
}

.panel-badge {
  display: inline-block;
  padding: 0.28rem 0.58rem;
  border: 2px solid var(--line);
  background: var(--blue);
  color: #fff;
  font-family: var(--mono-font);
  font-size: 0.84rem;
  font-weight: 700;
}

.panel-line {
  flex: 1;
  height: 3px;
  background: var(--line);
}

.focus-list {
  display: grid;
  gap: 0.9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.focus-list li {
  padding: 1rem 1rem 1.05rem;
  border: 2px solid var(--line);
  background: var(--surface-soft);
  font-size: 0.97rem;
  line-height: 1.5;
  transition: transform 0.2s ease, background 0.2s ease;
}

.focus-list li:hover {
  transform: translateX(4px);
  background: #fff8df;
}

#domains {
  background:
    linear-gradient(135deg, rgba(0, 88, 184, 0.08) 0 15%, transparent 15% 100%),
    linear-gradient(180deg, transparent 0 85%, rgba(242, 193, 0, 0.14) 85% 100%);
  border-top: 3px solid var(--line);
  border-bottom: 3px solid var(--line);
}

.domains-grid,
.contact-grid {
  display: grid;
  gap: 1.35rem;
}

.domains-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
}

.domain-card,
.contact-card,
.about-card {
  padding: 0;
}

.domain-card {
  position: relative;
  align-self: start;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.03) 0, rgba(0, 0, 0, 0.03) 14px, transparent 14px, transparent 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(248, 243, 235, 0.96));
  transition: transform 0.24s ease, box-shadow 0.24s ease, background 0.24s ease;
}

.domain-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 14px;
  background: var(--yellow);
}

.domain-card:nth-child(2n)::before {
  background: var(--blue);
}

.domain-card:nth-child(3n)::before {
  background: var(--red);
}

.domain-card:hover,
.contact-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: var(--shadow-lg);
}

.domain-summary-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: start;
  width: 100%;
  padding: 1.25rem 1.25rem 1.3rem 2rem;
  border: 0;
  background: transparent;
  cursor: pointer;
  text-align: left;
  transition: background 0.22s ease;
}

.domain-card:hover .domain-summary-bar {
  background: rgba(255, 255, 255, 0.35);
}

.domain-summary-bar:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: -3px;
}

.domain-summary-block,
.domain-heading-copy {
  display: grid;
  gap: 0.6rem;
  min-width: 0;
}

.domain-heading-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  align-items: start;
}

.domain-mark {
  display: inline-grid;
  place-items: center;
  width: 2.8rem;
  height: 2.8rem;
  border: 2px solid var(--line);
  background: var(--surface);
  font-family: var(--mono-font);
  font-size: 0.9rem;
  font-weight: 700;
}

.domain-card h3 {
  margin: 0;
  font-family: var(--display-font);
  font-size: 1.24rem;
  line-height: 1.03;
  letter-spacing: -0.04em;
}

.domain-summary {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.45;
}

.domain-toggle-indicator,
.toggle-indicator {
  display: inline-grid;
  place-items: center;
  border: 3px solid var(--line);
  background: var(--text);
  color: #fff;
  box-shadow: 4px 4px 0 var(--line);
  font-family: var(--mono-font);
  transition: transform 0.32s ease, background 0.28s ease, box-shadow 0.28s ease;
}

.domain-toggle-indicator {
  min-width: 3rem;
  min-height: 3rem;
  font-size: 1.05rem;
}

.domain-card:hover .domain-toggle-indicator,
.project-item:hover .toggle-indicator {
  box-shadow: 6px 6px 0 var(--line);
}

.domain-card.expanded .domain-toggle-indicator,
.project-item.expanded .toggle-indicator {
  transform: rotate(45deg) scale(1.04);
  background: var(--red);
}

.domain-body,
.project-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.56s cubic-bezier(0.25, 0.8, 0.25, 1);
  border-top: 3px solid transparent;
}

.domain-card.expanded .domain-body,
.project-item.expanded .project-body {
  border-top-color: var(--line);
}

.domain-body-inner {
  display: grid;
  gap: 1rem;
  padding: 1.15rem 1.25rem 1.3rem 2rem;
  background: rgba(255, 255, 255, 0.32);
}

.domain-description,
.domain-value {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.55;
}

.domain-value {
  padding: 0.85rem 0.9rem;
  border: 2px solid var(--line);
  background: rgba(242, 193, 0, 0.12);
}

.domain-topics,
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.62rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.domain-topics li,
.tag-list li {
  position: relative;
  padding: 0.38rem 0.7rem 0.38rem 1rem;
  border: 2px solid var(--line);
  background: var(--surface);
  font-family: var(--mono-font);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
  transition: transform 0.18s ease, background 0.18s ease;
}

.domain-topics li::before,
.tag-list li::before {
  content: "";
  position: absolute;
  left: 0.4rem;
  top: 50%;
  width: 0.34rem;
  height: 0.34rem;
  transform: translateY(-50%);
}

.domain-topics li::before {
  background: var(--red);
}

.tag-list li::before {
  background: var(--blue);
}

.domain-card:hover .domain-topics li:nth-child(odd),
.tag-list li:hover {
  transform: translate(-1px, -1px);
}

#projects {
  background:
    linear-gradient(90deg, rgba(17, 17, 17, 0.06) 0 1px, transparent 1px),
    linear-gradient(180deg, transparent 0 76%, rgba(213, 40, 31, 0.08) 76% 100%);
  background-size: 68px 68px, auto;
}

#projects-list {
  display: grid;
  gap: 2rem;
}

.project-item {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.03) 0, rgba(0, 0, 0, 0.03) 18px, transparent 18px, transparent 100%),
    var(--panel);
  transition: transform 0.24s ease, box-shadow 0.28s ease, background 0.28s ease;
}

.project-item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 18px;
  background: var(--blue);
}

.project-item:nth-child(2n)::before {
  background: var(--red);
}

.project-item:nth-child(3n)::before {
  background: var(--yellow);
}

.project-item:hover {
  transform: translate(-6px, -6px);
  box-shadow: var(--shadow-xl);
}

.project-summary-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.4rem;
  align-items: start;
  width: 100%;
  padding: 1.65rem 1.65rem 1.7rem 2.65rem;
  border: 0;
  background: transparent;
  cursor: pointer;
  text-align: left;
  transition: background 0.24s ease;
}

.project-item:hover .project-summary-bar {
  background: rgba(255, 255, 255, 0.42);
}

.project-summary-bar:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: -3px;
}

.project-header-block {
  display: grid;
  gap: 0.95rem;
  min-width: 0;
}

.project-title-row {
  display: block;
  min-width: 0;
}

.project-title-row h3 {
  margin: 0;
  min-width: 0;
  white-space: nowrap;
  font-family: var(--display-font);
  font-size: clamp(1.8rem, 2.9vw, 2.9rem);
  line-height: 0.93;
  letter-spacing: -0.06em;
}

.project-meta-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem 1rem;
  align-items: center;
}

.project-tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.project-class-tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.9rem;
  padding: 0.3rem 0.68rem;
  border: 2px solid var(--line);
  background: var(--surface);
  font-family: var(--mono-font);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.1;
  transition: transform 0.18s ease, box-shadow 0.22s ease;
}

.project-item:hover .project-class-tag {
  transform: translate(-1px, -1px);
}

.project-class-tag:first-child {
  background: var(--blue);
  color: #fff;
}

.project-class-tag:last-child {
  background: var(--yellow);
  color: var(--text);
}

.collection-header-tag {
  background: var(--text);
  color: #fff;
}

.project-pitch {
  display: inline-flex;
  align-items: center;
  justify-self: end;
  min-height: 3rem;
  max-width: none;
  padding: 0.42rem 0.84rem;
  border: 3px solid var(--line);
  background: var(--yellow);
  box-shadow: 4px 4px 0 var(--line);
  font-family: var(--display-font);
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.28;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
  animation: pitchPulse 4.8s ease-in-out infinite;
}

.project-item:hover .project-pitch {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--line);
}

.collection-card {
  background:
    linear-gradient(90deg, rgba(0, 88, 184, 0.06) 0, rgba(0, 88, 184, 0.06) 18px, transparent 18px, transparent 100%),
    var(--panel);
}

.collection-card::before {
  background: var(--text);
}

.collection-body-inner {
  padding: 1.4rem 1.5rem 1.6rem 2.4rem;
}

.collection-list {
  display: grid;
  gap: 1rem;
}

.collection-item {
  border: 2px solid var(--line);
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.03) 0, rgba(0, 0, 0, 0.03) 12px, transparent 12px, transparent 100%),
    var(--surface-soft);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.collection-item-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: start;
  width: 100%;
  padding: 0.85rem 0.95rem 0.85rem 1rem;
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.collection-item-heading {
  display: grid;
  gap: 0.4rem;
}

.collection-item-topline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.collection-item-topline h4 {
  margin: 0;
  font-family: var(--display-font);
  font-size: 1.15rem;
  line-height: 1.04;
  letter-spacing: -0.03em;
}

.collection-item-heading p {
  margin: 0;
  color: var(--muted-strong);
  font-size: 0.9rem;
  line-height: 1.42;
}

.collection-item-tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.7rem;
  padding: 0.28rem 0.58rem;
  border: 2px solid var(--line);
  background: var(--yellow);
  font-family: var(--mono-font);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.collection-item-toggle {
  display: inline-grid;
  place-items: center;
  min-width: 2.7rem;
  min-height: 2.7rem;
  border: 2px solid var(--line);
  background: var(--surface);
  font-family: var(--mono-font);
  font-size: 1rem;
  box-shadow: 3px 3px 0 var(--line);
  transition: transform 0.28s ease, background 0.22s ease;
}

.collection-item.expanded .collection-item-toggle {
  transform: rotate(45deg);
  background: var(--red);
  color: #fff;
}

.collection-item-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.42s cubic-bezier(0.25, 0.8, 0.25, 1);
  border-top: 2px solid transparent;
}

.collection-item.expanded .collection-item-body {
  border-top-color: var(--line);
}

.collection-item-body-inner {
  display: grid;
  gap: 0.8rem;
  padding: 0.85rem 0.95rem 0.95rem 1rem;
}

.collection-demo-block {
  background: var(--surface);
}

.collection-image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.8rem;
}

.collection-image-card {
  margin: 0;
  display: grid;
  gap: 0.45rem;
}

.collection-image-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 2px solid var(--line);
  background: var(--surface);
}

.collection-image-card figcaption {
  color: var(--muted-strong);
  font-size: 0.84rem;
  line-height: 1.4;
}

.project-summary {
  margin: 0;
  max-width: 74ch;
  font-size: 0.98rem;
  line-height: 1.56;
}

.toggle-indicator {
  min-width: 3.5rem;
  min-height: 3.5rem;
  font-size: 1.2rem;
}

.project-body-inner {
  padding: 1.7rem 1.65rem 1.95rem 2.65rem;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.92fr);
  gap: 1.3rem;
  align-items: start;
  background:
    linear-gradient(to bottom, rgba(17, 17, 17, 0.05) 0 1px, transparent 1px),
    linear-gradient(180deg, rgba(0, 0, 0, 0.02), transparent 40%);
  background-size: 100% 60px, auto;
}

.project-columns,
.diagram-panel {
  display: grid;
  gap: 1rem;
  align-content: start;
  align-items: start;
}

.project-block {
  position: relative;
  display: grid;
  align-content: start;
  gap: 0.35rem;
  min-height: 0;
  padding: 0.95rem 0.95rem 1rem 0.95rem;
  border: 2px solid var(--line);
  background: var(--surface-soft);
  transition: transform 0.22s ease, background 0.22s ease;
}

.project-item.expanded .project-block:hover {
  transform: translate(-2px, -2px);
}

.project-block.problem {
  background: rgba(213, 40, 31, 0.1);
}

.project-block.solution {
  background: rgba(0, 88, 184, 0.1);
}

.pitch-block {
  background:
    linear-gradient(90deg, var(--yellow) 0 18px, #ffe58d 18px 100%);
}

.pitch-block p {
  color: var(--text);
  font-weight: 600;
}

.project-block h4,
.diagram-panel h4 {
  margin: 0 0 0.58rem;
  font-family: var(--mono-font);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  line-height: 1.28;
}

.project-block p,
.project-block ul {
  margin: 0;
}

.project-block p {
  font-size: 0.94rem;
  line-height: 1.52;
}

.project-block ul {
  padding-left: 1.1rem;
}

.project-block li {
  font-size: 0.92rem;
  line-height: 1.46;
}

.project-block li + li {
  margin-top: 0.45rem;
}

.diagram-panel > .project-block:first-child {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 22%),
    var(--text);
  color: #f4efe6;
}

.diagram-panel > .project-block:first-child h4 {
  color: #f4efe6;
}

.diagram-box {
  margin: 0;
  display: inline-block;
  width: 100%;
  padding: 0.9rem;
  border: 3px solid #f4efe6;
  background:
    linear-gradient(to right, rgba(242, 193, 0, 0.22) 0 1px, transparent 1px),
    linear-gradient(to bottom, rgba(242, 193, 0, 0.15) 0 1px, transparent 1px),
    #111111;
  background-size: 18px 18px;
  color: #f8f4ed;
  font-family: var(--mono-font);
  font-size: 0.82rem;
  line-height: 1.42;
  overflow-x: auto;
}

.media-block {
  background:
    linear-gradient(180deg, rgba(0, 88, 184, 0.06), transparent 26%),
    var(--surface);
}

.project-video-shell {
  position: relative;
  aspect-ratio: 16 / 9;
  border: 3px solid var(--line);
  background:
    linear-gradient(to right, rgba(0, 88, 184, 0.2) 0 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 88, 184, 0.14) 0 1px, transparent 1px),
    #111111;
  background-size: 18px 18px;
  overflow: hidden;
  box-shadow: 4px 4px 0 var(--line);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.media-block:hover .project-video-shell {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--line);
}

.project-video-frame {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: #111111;
  object-fit: cover;
}

.project-video-placeholder {
  display: grid;
  align-content: center;
  justify-items: start;
  gap: 0.55rem;
  width: 100%;
  height: 100%;
  padding: 1.1rem;
  color: #f8f4ed;
  font-size: 0.92rem;
  line-height: 1.5;
}

.project-video-placeholder-title {
  display: inline-block;
  padding: 0.3rem 0.55rem;
  border: 2px solid #f4efe6;
  font-family: var(--mono-font);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-demo-note {
  display: grid;
  gap: 0.35rem;
  margin-top: 0.8rem;
  padding: 0.72rem 0.82rem;
  border: 2px solid var(--line);
  background: rgba(242, 193, 0, 0.12);
}

.project-demo-label {
  font-family: var(--mono-font);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tag-list li:hover {
  background: #eef4ff;
}

.tag-list li {
  padding: 0.34rem 0.66rem 0.34rem 0.94rem;
}

#about {
  background:
    linear-gradient(90deg, rgba(213, 40, 31, 0.08) 0 14px, transparent 14px 100%),
    linear-gradient(180deg, transparent 0 82%, rgba(0, 88, 184, 0.08) 82% 100%);
}

.about-card {
  align-self: start;
  display: grid;
  gap: 1rem;
  padding: 1.35rem;
  background:
    linear-gradient(180deg, var(--surface) 0 70%, rgba(213, 40, 31, 0.08) 70% 100%);
}

.about-lead {
  margin-top: 0;
  color: var(--text);
  font-family: var(--display-font);
  font-size: 1.38rem;
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.03em;
}

#contact {
  background:
    linear-gradient(135deg, rgba(242, 193, 0, 0.16) 0 18%, transparent 18% 100%),
    linear-gradient(180deg, transparent 0 86%, rgba(17, 17, 17, 0.05) 86% 100%);
  border-top: 3px solid var(--line);
}

.contact-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.contact-card {
  display: grid;
  gap: 0.5rem;
  padding: 1.35rem;
  background: var(--surface);
}

.contact-label {
  font-family: var(--mono-font);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.contact-card a {
  font-size: 0.97rem;
  line-height: 1.55;
}

.site-footer {
  padding: 1.6rem 0 2.1rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 3px solid var(--line);
}

.footer-content p,
.footer-content a {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}

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

@keyframes pitchPulse {
  0%,
  100% {
    box-shadow: 4px 4px 0 var(--line);
  }

  50% {
    box-shadow: 6px 6px 0 var(--line);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 1080px) {
  .hero-grid,
  .about-grid,
  .project-body-inner {
    grid-template-columns: 1fr;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 780px) {
  body {
    background-size: 28px 28px;
  }

  .section {
    padding: 5.25rem 0;
  }

  .navbar {
    position: relative;
  }

  .nav-toggle {
    display: inline-block;
  }

  .nav-panel {
    gap: 0.75rem;
  }

  .nav-links {
    position: absolute;
    top: calc(100% - 0.2rem);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0.9rem;
    padding: 1rem;
    border: 3px solid var(--line);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .hero-copy h1,
  .section-heading h2,
  .project-title-row h3 {
    white-space: normal;
  }

  .domain-summary-bar,
  .project-summary-bar {
    grid-template-columns: 1fr;
  }

  .domain-summary-bar {
    position: relative;
    padding: 1rem 4.5rem 1.1rem 1.75rem;
  }

  .domain-heading-row {
    grid-template-columns: 1fr;
    gap: 0.7rem;
  }

  .domain-body-inner {
    padding: 1rem 1.1rem 1.15rem 1.75rem;
  }

  .domain-heading-copy {
    gap: 0.45rem;
  }

  .domain-card h3 {
    font-size: 1.08rem;
    line-height: 1.08;
  }

  .domain-summary {
    font-size: 0.86rem;
    line-height: 1.42;
  }

  .domain-toggle-indicator {
    position: absolute;
    top: 0.95rem;
    right: 1rem;
    min-width: 2.35rem;
    min-height: 2.35rem;
    font-size: 0.95rem;
    box-shadow: 3px 3px 0 var(--line);
    transform: none;
  }

  .domain-card:hover .domain-toggle-indicator {
    box-shadow: 3px 3px 0 var(--line);
  }

  .domain-card.expanded .domain-toggle-indicator {
    transform: none;
    background: var(--red);
  }

  .domain-body,
  .domain-body-inner,
  .domain-description,
  .domain-value,
  .domain-topics {
    overflow: visible;
  }

  .domain-topics li,
  .domain-value,
  .domain-description {
    max-width: 100%;
  }

  .project-summary-bar {
    position: relative;
    padding: 1rem 4.75rem 1.1rem 2rem;
  }

  .collection-body-inner {
    padding: 1rem 1rem 1.15rem 1.7rem;
  }

  .collection-item-summary {
    position: relative;
    grid-template-columns: 1fr;
    padding: 0.95rem 4.25rem 0.95rem 1rem;
  }

  .collection-item-toggle {
    position: absolute;
    top: 0.95rem;
    right: 0.95rem;
    min-width: 2.3rem;
    min-height: 2.3rem;
    font-size: 0.88rem;
    box-shadow: 3px 3px 0 var(--line);
    transform: none;
  }

  .collection-item.expanded .collection-item-toggle {
    transform: none;
    background: var(--red);
    color: #fff;
  }

  .project-meta-row {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .project-pitch {
    justify-self: start;
    max-width: none;
  }

  .domain-toggle-indicator,
  .toggle-indicator {
    min-width: 3rem;
    min-height: 3rem;
  }

  .toggle-indicator {
    position: absolute;
    top: 1rem;
    right: 1rem;
    min-width: 2.45rem;
    min-height: 2.45rem;
    font-size: 0.96rem;
    box-shadow: 3px 3px 0 var(--line);
    transform: none;
  }

  .project-item:hover .toggle-indicator {
    box-shadow: 3px 3px 0 var(--line);
  }

  .project-item.expanded .toggle-indicator {
    transform: none;
    background: var(--red);
  }

  .project-body-inner {
    padding: 1.25rem 1.2rem 1.35rem 2rem;
    grid-template-columns: 1fr;
  }

  .project-header-block {
    min-width: 0;
    padding-right: 0;
  }

  .project-title-row h3 {
    font-size: clamp(1.35rem, 6vw, 1.9rem);
    line-height: 1;
  }

  .project-summary {
    max-width: 100%;
  }

  .project-columns,
  .diagram-panel,
  .project-block,
  .project-demo-note,
  .project-video-shell {
    overflow: visible;
  }

  .tag-list,
  .tag-list li,
  .project-block p,
  .project-block li {
    max-width: 100%;
    word-break: break-word;
  }

  .domains-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    align-items: flex-start;
  }
}