:root {
  --bg: #07111f;
  --bg-elevated: #0a1626;
  --surface: #0c1a2c;
  --surface-strong: #102238;
  --surface-soft: rgba(16, 34, 56, 0.66);
  --text: #f4f7fb;
  --text-soft: #a9b7c9;
  --text-faint: #73849b;
  --line: rgba(148, 163, 184, 0.18);
  --line-strong: rgba(148, 163, 184, 0.3);
  --accent: #5eead4;
  --accent-strong: #2dd4bf;
  --accent-ink: #042f2e;
  --blue: #7dd3fc;
  --violet: #a78bfa;
  --header: rgba(7, 17, 31, 0.82);
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.3);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 30px;
  --shell: 1180px;
  --header-height: 78px;
}

html[data-theme="light"] {
  --bg: #f4f7fb;
  --bg-elevated: #edf2f7;
  --surface: #ffffff;
  --surface-strong: #e9f0f7;
  --surface-soft: rgba(255, 255, 255, 0.78);
  --text: #0b1728;
  --text-soft: #46566b;
  --text-faint: #6e7d90;
  --line: rgba(15, 23, 42, 0.11);
  --line-strong: rgba(15, 23, 42, 0.2);
  --accent: #0f766e;
  --accent-strong: #0d9488;
  --accent-ink: #ffffff;
  --blue: #0369a1;
  --violet: #6d28d9;
  --header: rgba(244, 247, 251, 0.86);
  --shadow: 0 28px 80px rgba(15, 23, 42, 0.11);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  overflow-x: hidden;
  background: var(--bg);
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 15% -10%, rgba(45, 212, 191, 0.08), transparent 30rem),
    var(--bg);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

@supports (overflow: clip) {
  html,
  body {
    overflow-x: clip;
  }
}

body.menu-open {
  overflow: hidden;
}

::selection {
  color: #042f2e;
  background: #99f6e4;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

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

button {
  color: inherit;
}

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

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--text);
  font-weight: 650;
  line-height: 1.1;
  letter-spacing: -0.035em;
}

h2 {
  max-width: 780px;
  margin-bottom: 0;
  font-size: clamp(2.25rem, 5vw, 4.5rem);
}

h3 {
  font-size: 1.35rem;
}

.skip-link {
  position: fixed;
  z-index: 2000;
  top: 10px;
  left: 10px;
  padding: 10px 16px;
  color: #042f2e;
  background: #99f6e4;
  border-radius: 8px;
  font-weight: 700;
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

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

.shell {
  width: min(calc(100% - 48px), var(--shell));
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: clamp(92px, 11vw, 152px);
}

.section-tint {
  border-block: 1px solid var(--line);
  background:
    linear-gradient(180deg, transparent, rgba(94, 234, 212, 0.025) 45%, transparent),
    var(--bg-elevated);
}

.eyebrow,
.mono-label {
  margin-bottom: 16px;
  color: var(--accent);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.4;
  text-transform: uppercase;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(280px, 0.7fr);
  gap: 48px;
  align-items: end;
  margin-bottom: 58px;
}

.section-heading > div > .eyebrow {
  margin-bottom: 20px;
}

.section-heading > p {
  margin: 0 0 5px;
  color: var(--text-soft);
  font-size: 1.04rem;
}

.ambient {
  position: absolute;
  z-index: -1;
  width: min(30rem, 100vw);
  height: min(30rem, 100vw);
  border-radius: 50%;
  pointer-events: none;
  filter: blur(90px);
  opacity: 0.12;
}

.ambient-one {
  top: 5rem;
  right: 0;
  background: var(--accent);
}

.ambient-two {
  top: 42rem;
  left: 0;
  background: var(--violet);
}

.site-header {
  position: sticky;
  z-index: 1000;
  top: 0;
  height: var(--header-height);
  border-bottom: 1px solid transparent;
  background: var(--header);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

@supports (backdrop-filter: blur(18px)) {
  .site-header {
    backdrop-filter: blur(18px) saturate(150%);
  }
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.nav-shell {
  display: flex;
  height: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  place-items: center;
  color: var(--accent-ink);
  background: var(--accent);
  border-radius: 11px;
  font-size: 1.02rem;
  font-weight: 850;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.desktop-nav a {
  position: relative;
  padding-block: 8px;
  color: var(--text-soft);
  font-size: 0.86rem;
  font-weight: 600;
  transition: color 160ms ease;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: 1px;
  left: 0;
  height: 1px;
  background: var(--accent);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.desktop-nav a:hover,
.desktop-nav a.is-active {
  color: var(--text);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-button {
  display: grid;
  width: 42px;
  height: 42px;
  padding: 0;
  place-items: center;
  color: var(--text-soft);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 12px;
  cursor: pointer;
  transition: color 160ms ease, border-color 160ms ease, background 160ms ease;
}

.icon-button:hover {
  color: var(--text);
  background: var(--surface);
  border-color: var(--line-strong);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.75;
}

html[data-theme="dark"] .moon-icon,
html[data-theme="light"] .sun-icon {
  display: none;
}

.nav-cta {
  display: inline-flex;
  height: 42px;
  align-items: center;
  gap: 8px;
  padding-inline: 18px;
  color: var(--accent-ink);
  background: var(--accent);
  border-radius: 12px;
  font-size: 0.84rem;
  font-weight: 750;
  transition: background 160ms ease, transform 160ms ease;
}

.nav-cta:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
}

.menu-toggle,
.mobile-menu {
  display: none;
}

.hero {
  min-height: calc(100svh - var(--header-height));
  padding-block: clamp(64px, 9vw, 118px) clamp(82px, 10vw, 130px);
}

.hero::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  content: "";
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.7), transparent 80%);
  opacity: 0.16;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(390px, 0.82fr);
  gap: clamp(56px, 7vw, 92px);
  align-items: center;
}

.identity-line {
  display: flex;
  align-items: center;
  gap: 17px;
  margin-bottom: 30px;
}

.identity-line .eyebrow {
  margin-bottom: 6px;
}

.avatar {
  width: 130px;
  height: 130px;
  flex: 0 0 auto;
  border: 2px solid rgba(94, 234, 212, 0.6);
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 5px rgba(94, 234, 212, 0.09);
}

.location {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  color: var(--text-soft);
  font-size: 0.83rem;
}

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(94, 234, 212, 0.1);
}

.hero h1 {
  max-width: 760px;
  margin-bottom: 28px;
  font-size: clamp(3.2rem, 7.4vw, 7.15rem);
  font-weight: 660;
  letter-spacing: -0.064em;
  line-height: 0.96;
}

.hero h1 span {
  display: block;
  color: var(--text-soft);
  font-weight: 560;
}

.hero-lede {
  max-width: 650px;
  margin-bottom: 34px;
  color: var(--text-soft);
  font-size: clamp(1.04rem, 1.8vw, 1.22rem);
  line-height: 1.7;
}

.hero-actions,
.paper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 13px 19px;
  border: 1px solid transparent;
  border-radius: 14px;
  font-size: 0.9rem;
  font-weight: 720;
  line-height: 1.2;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--accent-ink);
  background: var(--accent);
  box-shadow: 0 10px 30px rgba(45, 212, 191, 0.13);
}

.button-primary:hover {
  background: var(--accent-strong);
  box-shadow: 0 14px 38px rgba(45, 212, 191, 0.2);
}

.button-secondary {
  color: var(--text);
  background: var(--surface-soft);
  border-color: var(--line);
}

.button-secondary:hover {
  background: var(--surface-strong);
  border-color: var(--line-strong);
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 9px 20px;
  margin-top: 34px;
  color: var(--text-faint);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-proof span {
  position: relative;
}

.hero-proof span:not(:last-child)::after {
  position: absolute;
  top: 50%;
  right: -12px;
  width: 3px;
  height: 3px;
  background: var(--text-faint);
  border-radius: 50%;
  content: "";
}

.system-card {
  position: relative;
  overflow: hidden;
  padding: 28px;
  background:
    linear-gradient(135deg, rgba(125, 211, 252, 0.05), transparent 45%),
    var(--surface-soft);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.system-card::after {
  position: absolute;
  width: 180px;
  height: 180px;
  right: -100px;
  bottom: -100px;
  background: var(--accent);
  border-radius: 50%;
  content: "";
  filter: blur(80px);
  opacity: 0.17;
}

.system-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 28px;
  padding-bottom: 23px;
  border-bottom: 1px solid var(--line);
}

.system-card-header .mono-label {
  margin-bottom: 9px;
}

.system-card h2 {
  max-width: 280px;
  font-size: 1.32rem;
  letter-spacing: -0.025em;
}

.live-badge {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 7px;
  padding: 7px 9px;
  color: var(--text-soft);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 100px;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.live-badge span {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(94, 234, 212, 0.12);
}

.system-flow {
  margin: 0;
  padding: 0;
  list-style: none;
}

.system-flow li {
  position: relative;
  display: grid;
  grid-template-columns: 36px 1fr auto;
  gap: 13px;
  align-items: center;
  min-height: 67px;
}

.system-flow li:not(:last-child)::before {
  position: absolute;
  top: 45px;
  bottom: -9px;
  left: 17px;
  width: 1px;
  background: linear-gradient(var(--accent), var(--line));
  content: "";
}

.flow-index {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: var(--accent);
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 11px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.68rem;
  font-weight: 800;
}

.system-flow strong,
.system-flow small {
  display: block;
}

.system-flow strong {
  margin-bottom: 1px;
  font-size: 0.88rem;
  font-weight: 680;
}

.system-flow small {
  color: var(--text-faint);
  font-size: 0.72rem;
}

.flow-state {
  color: var(--blue);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.62rem;
  letter-spacing: 0.04em;
}

.system-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: end;
  margin-top: 25px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.system-footer p {
  max-width: 180px;
  margin: 0;
  color: var(--text-soft);
  font-size: 0.7rem;
  text-align: right;
}

.system-footer p span {
  display: block;
  margin-bottom: 4px;
  color: var(--accent);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.59rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.signal-bars {
  display: flex;
  height: 30px;
  align-items: end;
  gap: 4px;
}

.signal-bars i {
  display: block;
  width: 3px;
  height: 22%;
  background: var(--accent);
  border-radius: 4px;
  opacity: 0.65;
  animation: signal 1.8s ease-in-out infinite alternate;
}

.signal-bars i:nth-child(2n) { height: 70%; animation-delay: -0.5s; }
.signal-bars i:nth-child(3n) { height: 45%; animation-delay: -1s; }
.signal-bars i:nth-child(5n) { height: 95%; animation-delay: -1.4s; }

@keyframes signal {
  from { transform: scaleY(0.45); }
  to { transform: scaleY(1); }
}

.proof-strip {
  border-block: 1px solid var(--line);
  background: var(--bg-elevated);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.proof-item {
  display: grid;
  min-height: 138px;
  align-content: center;
  padding: 26px 32px;
}

.proof-item:not(:last-child) {
  border-right: 1px solid var(--line);
}

.proof-item strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 1;
}

.proof-item span {
  max-width: 200px;
  color: var(--text-soft);
  font-size: 0.79rem;
  line-height: 1.45;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.capability-card {
  position: relative;
  min-height: 360px;
  padding: 26px;
  background: var(--surface-soft);
  transition: background 200ms ease, transform 200ms ease;
}

.capability-card:first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.capability-card:last-child {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.capability-card:not(:last-child) {
  border-right: 1px solid var(--line);
}

.capability-card:hover {
  z-index: 1;
  background: var(--surface-strong);
  transform: translateY(-5px);
}

.card-number {
  display: block;
  margin-bottom: 48px;
  color: var(--text-faint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.7rem;
}

.capability-icon {
  display: grid;
  width: 52px;
  height: 52px;
  margin-bottom: 28px;
  place-items: center;
  color: var(--accent);
  background: rgba(94, 234, 212, 0.07);
  border: 1px solid rgba(94, 234, 212, 0.19);
  border-radius: 15px;
}

.capability-icon svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.45;
}

.capability-card h3 {
  margin-bottom: 15px;
  font-size: 1.16rem;
}

.capability-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.88rem;
}

.toolkit {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 28px;
  margin-top: 24px;
  padding: 28px 30px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.toolkit > .mono-label {
  margin: 4px 0 0;
}

.toolkit-rows {
  display: grid;
  gap: 14px;
}

.toolkit-rows > div {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 20px;
  align-items: baseline;
}

.toolkit-rows strong {
  color: var(--text);
  font-size: 0.8rem;
}

.toolkit-rows span {
  color: var(--text-soft);
  font-size: 0.78rem;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.project-card {
  position: relative;
  display: flex;
  min-height: 410px;
  overflow: hidden;
  flex-direction: column;
  padding: clamp(26px, 3vw, 38px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.project-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.project-card::after {
  position: absolute;
  width: 250px;
  height: 250px;
  right: -160px;
  bottom: -160px;
  background: var(--blue);
  border-radius: 50%;
  content: "";
  filter: blur(80px);
  opacity: 0.1;
}

.project-featured {
  grid-column: 1 / -1;
  min-height: 480px;
  background:
    radial-gradient(circle at 86% 70%, rgba(94, 234, 212, 0.07), transparent 27rem),
    var(--surface);
}

.project-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 70px;
  padding-bottom: 18px;
  color: var(--text-faint);
  border-bottom: 1px solid var(--line);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.66rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.project-card > .mono-label {
  margin-bottom: 18px;
}

.project-card h3 {
  max-width: 650px;
  margin-bottom: 18px;
  font-size: clamp(1.75rem, 4vw, 3.5rem);
}

.project-card > p:not(.mono-label),
.project-body p {
  max-width: 690px;
  margin-bottom: 0;
  color: var(--text-soft);
  font-size: 0.98rem;
}

.project-body {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(290px, 0.6fr);
  gap: 60px;
  align-items: end;
}

.metric-cluster {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.metric-cluster > div {
  min-width: 0;
  padding: 22px 12px;
  background: var(--bg-elevated);
  text-align: center;
}

.metric-cluster strong,
.metric-cluster span {
  display: block;
}

.metric-cluster strong {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  font-weight: 620;
  letter-spacing: -0.04em;
}

.metric-cluster span {
  color: var(--text-faint);
  font-size: 0.64rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: auto 0 0;
  padding: 64px 0 0;
  list-style: none;
}

.project-tags li {
  padding: 7px 11px;
  color: var(--text-soft);
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 100px;
  font-size: 0.68rem;
}

.project-diagram {
  display: flex;
  align-items: center;
  margin-top: auto;
  padding-top: 60px;
}

.project-diagram span {
  display: grid;
  min-width: 68px;
  height: 44px;
  padding-inline: 12px;
  place-items: center;
  color: var(--text-soft);
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 12px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.63rem;
}

.project-diagram i {
  position: relative;
  width: 34px;
  height: 1px;
  background: var(--line-strong);
}

.project-diagram i::after {
  position: absolute;
  top: -2px;
  right: 0;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
  content: "";
}

.mini-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
  padding-top: 55px;
}

.mini-stats span {
  padding: 10px 13px;
  color: var(--text-soft);
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 11px;
  font-size: 0.73rem;
}

.mini-stats strong {
  color: var(--text);
}

.experience-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.68fr) minmax(0, 1.32fr);
  gap: clamp(60px, 10vw, 140px);
  align-items: start;
}

.experience-intro {
  position: sticky;
  top: calc(var(--header-height) + 40px);
}

.experience-intro h2 {
  margin-bottom: 26px;
  font-size: clamp(2.3rem, 4.5vw, 4.2rem);
}

.experience-intro > p:not(.eyebrow) {
  margin-bottom: 28px;
  color: var(--text-soft);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 5px;
  color: var(--text);
  border-bottom: 1px solid var(--accent);
  font-size: 0.86rem;
  font-weight: 680;
}

.timeline {
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline-item {
  display: grid;
  grid-template-columns: 28px 112px 1fr;
  gap: 20px;
  min-height: 195px;
}

.timeline-marker {
  position: relative;
  display: flex;
  justify-content: center;
}

.timeline-marker::before {
  position: absolute;
  top: 14px;
  bottom: -14px;
  left: 50%;
  width: 1px;
  background: var(--line);
  content: "";
}

.timeline-item:last-child .timeline-marker::before {
  display: none;
}

.timeline-marker span {
  position: relative;
  z-index: 1;
  width: 11px;
  height: 11px;
  margin-top: 8px;
  background: var(--bg);
  border: 2px solid var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 5px var(--bg);
}

.timeline-date {
  padding-top: 4px;
  color: var(--text-faint);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.04em;
}

.timeline-content {
  padding-bottom: 62px;
}

.timeline-content h3 {
  margin-bottom: 6px;
  font-size: 1.28rem;
}

.timeline-content .company {
  margin-bottom: 15px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 650;
}

.timeline-content > p:last-child {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.91rem;
}

.research-section {
  overflow: hidden;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(circle at 80% 12%, rgba(167, 139, 250, 0.08), transparent 28rem),
    var(--bg-elevated);
}

.paper-card {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.6fr);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.paper-main {
  padding: clamp(30px, 5vw, 62px);
}

.paper-kicker {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}

.paper-kicker span {
  padding: 6px 10px;
  color: var(--text-soft);
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 100px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.63rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.paper-kicker span:first-child {
  color: var(--accent);
  border-color: rgba(94, 234, 212, 0.25);
}

.paper-main h3 {
  max-width: 760px;
  margin-bottom: 20px;
  font-size: clamp(2rem, 4vw, 3.7rem);
}

.mu {
  color: var(--accent);
  font-family: Georgia, serif;
  font-style: italic;
}

.paper-main > p {
  max-width: 710px;
  color: var(--text-soft);
}

.paper-summary {
  margin-top: 30px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.paper-actions {
  margin-top: 34px;
}

.paper-results {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin: 0;
  background: var(--line);
  gap: 1px;
}

.paper-results > div {
  display: flex;
  min-height: 210px;
  flex-direction: column;
  justify-content: end;
  padding: 28px;
  background: var(--surface-strong);
}

.paper-results dt {
  margin-bottom: 9px;
  color: var(--accent);
  font-size: clamp(1.8rem, 3vw, 2.7rem);
  font-weight: 630;
  letter-spacing: -0.05em;
  line-height: 1;
}

.paper-results dd {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.76rem;
  line-height: 1.4;
}

.education-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  margin-top: 22px;
}

.education-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 25px;
  padding: 30px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.degree {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  color: var(--accent);
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 16px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 700;
}

.education-card .mono-label {
  margin-bottom: 10px;
}

.education-card h3 {
  margin-bottom: 11px;
  font-size: 1.15rem;
}

.education-card p:last-child {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.82rem;
}

.scholar-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 22px;
  padding: 20px 24px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  transition: background 160ms ease, border-color 160ms ease;
}

.scholar-link:hover {
  background: var(--surface-strong);
  border-color: var(--line-strong);
}

.scholar-link > span:first-child {
  display: grid;
  gap: 3px;
}

.scholar-link strong {
  font-size: 0.9rem;
}

.scholar-link small {
  color: var(--text-soft);
}

.scholar-link > span:last-child {
  color: var(--accent);
  font-size: 1.3rem;
}

.contact-section {
  padding-bottom: clamp(76px, 9vw, 120px);
}

.contact-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: 60px;
  overflow: hidden;
  padding: clamp(36px, 6vw, 72px);
  color: #07111f;
  background: #7dd3fc;
  border-radius: var(--radius-lg);
}

.contact-card::before,
.contact-card::after {
  position: absolute;
  border: 1px solid rgba(7, 17, 31, 0.12);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.contact-card::before {
  width: 420px;
  height: 420px;
  right: -200px;
  bottom: -260px;
}

.contact-card::after {
  width: 280px;
  height: 280px;
  right: -130px;
  bottom: -190px;
}

.contact-card .eyebrow,
.contact-card h2,
.contact-card p,
.contact-card a,
.contact-card button {
  position: relative;
  z-index: 1;
  color: #07111f;
}

.contact-card .eyebrow {
  color: #164e63;
}

.contact-card h2 {
  margin-bottom: 22px;
  font-size: clamp(2.5rem, 6vw, 5.8rem);
}

.contact-card > div:first-child > p:last-child {
  max-width: 640px;
  margin: 0;
  color: rgba(7, 17, 31, 0.73);
  font-size: 1rem;
}

.contact-actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  gap: 10px;
}

.button-light {
  color: #f8fafc !important;
  background: #07111f;
}

.button-light:hover {
  box-shadow: 0 16px 34px rgba(7, 17, 31, 0.2);
}

.copy-button {
  min-height: 48px;
  padding: 11px 18px;
  color: #07111f;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(7, 17, 31, 0.16);
  border-radius: 13px;
  cursor: pointer;
  font-size: 0.83rem;
  font-weight: 720;
  transition: background 160ms ease;
}

.copy-button:hover {
  background: rgba(255, 255, 255, 0.38);
}

.copy-status {
  min-height: 20px;
  margin: 0;
  font-size: 0.72rem;
  text-align: center;
}

.contact-links {
  position: absolute;
  z-index: 2;
  right: clamp(36px, 6vw, 72px);
  bottom: 26px;
  left: clamp(36px, 6vw, 72px);
  display: flex;
  gap: 24px;
}

.contact-links a {
  padding-bottom: 3px;
  border-bottom: 1px solid rgba(7, 17, 31, 0.35);
  font-size: 0.76rem;
  font-weight: 650;
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  min-height: 110px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--text-faint);
  font-size: 0.72rem;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  color: var(--text-soft);
  font-weight: 650;
}

.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 650ms cubic-bezier(0.2, 0.7, 0.2, 1), transform 650ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

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

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

@media (max-width: 1050px) {
  .desktop-nav {
    gap: 20px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(350px, 0.72fr);
    gap: 48px;
  }

  .hero h1 {
    font-size: clamp(3.4rem, 7.9vw, 5.3rem);
  }

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

  .capability-card {
    min-height: 320px;
  }

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

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

  .capability-card:first-child {
    border-radius: var(--radius-md) 0 0 0;
  }

  .capability-card:nth-child(2) {
    border-radius: 0 var(--radius-md) 0 0;
  }

  .capability-card:nth-child(3) {
    border-radius: 0 0 0 var(--radius-md);
  }

  .capability-card:last-child {
    border-radius: 0 0 var(--radius-md) 0;
  }

  .paper-card {
    grid-template-columns: 1fr;
  }

  .paper-results {
    grid-template-columns: repeat(4, 1fr);
  }

  .paper-results > div {
    min-height: 160px;
    padding: 22px;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 70px;
  }

  .shell {
    width: min(calc(100% - 36px), var(--shell));
  }

  .desktop-nav,
  .nav-cta {
    display: none;
  }

  .menu-toggle {
    display: grid;
  }

  .menu-toggle span {
    display: block;
    width: 18px;
    height: 1.5px;
    background: currentColor;
    transition: transform 180ms ease;
  }

  .menu-toggle span:last-child {
    margin-top: -12px;
  }

  .menu-toggle[aria-expanded="true"] span:first-child {
    transform: translateY(3.5px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
  }

  .mobile-menu {
    position: fixed;
    z-index: 999;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 28px 18px;
    background: var(--bg);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  .mobile-menu.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .mobile-menu a {
    padding: 18px 8px;
    color: var(--text);
    border-bottom: 1px solid var(--line);
    font-size: 1.35rem;
    font-weight: 620;
    letter-spacing: -0.02em;
  }

  .hero {
    min-height: auto;
  }

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

  .hero-copy {
    max-width: 740px;
  }

  .system-card {
    max-width: 650px;
  }

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

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

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

  .section-heading {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .section-heading > p {
    max-width: 620px;
  }

  .project-body {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .experience-layout {
    grid-template-columns: 1fr;
    gap: 62px;
  }

  .experience-intro {
    position: static;
    max-width: 680px;
  }

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

  .contact-card {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-bottom: 90px;
  }

  .contact-actions {
    max-width: 460px;
  }
}

@media (max-width: 640px) {
  .shell {
    width: min(calc(100% - 28px), var(--shell));
  }

  .section {
    padding-block: 84px;
  }

  .brand-name {
    max-width: 165px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .hero {
    padding-top: 48px;
  }

  .identity-line {
    align-items: flex-start;
  }

  .identity-line .eyebrow {
    font-size: 0.65rem;
  }

  .avatar {
    width: 120px;
    height: 120px;
  }

  .hero h1 {
    font-size: clamp(3.2rem, 17vw, 4.6rem);
  }

  .hero-actions,
  .paper-actions {
    flex-direction: column;
  }

  .hero-actions .button,
  .paper-actions .button {
    width: 100%;
  }

  .hero-proof {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 9px 12px;
  }

  .hero-proof span::after {
    display: none;
  }

  .system-card {
    padding: 22px 18px;
    border-radius: var(--radius-md);
  }

  .system-card-header {
    display: block;
  }

  .live-badge {
    margin-top: 15px;
  }

  .flow-state {
    display: none;
  }

  .system-flow li {
    grid-template-columns: 36px 1fr;
  }

  .proof-item {
    min-height: 130px;
    padding: 22px 14px;
  }

  .proof-item strong {
    font-size: 1.75rem;
  }

  .proof-item span {
    font-size: 0.7rem;
  }

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

  .capability-card,
  .capability-card:nth-child(n) {
    min-height: auto;
    padding: 25px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }

  .capability-card:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
  }

  .capability-card:last-child {
    border-bottom: 0;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
  }

  .card-number {
    margin-bottom: 26px;
  }

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

  .toolkit-rows > div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

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

  .project-featured {
    grid-column: auto;
  }

  .project-card,
  .project-featured {
    min-height: 430px;
    padding: 24px;
  }

  .project-meta {
    margin-bottom: 48px;
  }

  .project-card h3 {
    font-size: 2rem;
  }

  .metric-cluster {
    grid-template-columns: 1fr;
  }

  .metric-cluster > div {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 14px 16px;
    text-align: left;
  }

  .metric-cluster strong {
    margin: 0;
  }

  .project-diagram i {
    width: 18px;
  }

  .project-diagram span {
    min-width: 60px;
    padding-inline: 8px;
  }

  .timeline-item {
    grid-template-columns: 22px 1fr;
    gap: 14px;
  }

  .timeline-date {
    grid-column: 2;
    padding-top: 0;
  }

  .timeline-content {
    grid-column: 2;
    margin-top: -8px;
  }

  .timeline-marker {
    grid-row: 1 / span 2;
  }

  .paper-card {
    border-radius: var(--radius-md);
  }

  .paper-results {
    grid-template-columns: repeat(2, 1fr);
  }

  .paper-results > div {
    min-height: 138px;
    padding: 18px;
  }

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

  .contact-card {
    width: min(calc(100% - 20px), var(--shell));
    padding: 34px 24px 105px;
    border-radius: var(--radius-md);
  }

  .contact-card h2 {
    font-size: 3.4rem;
  }

  .button-light {
    font-size: 0.78rem;
  }

  .contact-links {
    right: 24px;
    bottom: 28px;
    left: 24px;
    flex-wrap: wrap;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
    padding-block: 26px;
  }
}

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

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

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

@media print {
  :root,
  html[data-theme="dark"] {
    --bg: #ffffff;
    --bg-elevated: #ffffff;
    --surface: #ffffff;
    --surface-strong: #f6f6f6;
    --surface-soft: #ffffff;
    --text: #111111;
    --text-soft: #333333;
    --text-faint: #555555;
    --line: #dddddd;
    --line-strong: #bbbbbb;
    --accent: #0f766e;
  }

  .site-header,
  .ambient,
  .contact-section,
  .site-footer,
  .hero-actions,
  .signal-bars {
    display: none !important;
  }

  .section,
  .hero {
    min-height: auto;
    padding-block: 34px;
  }

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

  .project-card,
  .paper-card,
  .system-card,
  .capability-card {
    box-shadow: none;
    break-inside: avoid;
  }
}