:root {
  --bg: #071018;
  --bg-deep: #03070c;
  --surface: rgba(9, 18, 28, 0.82);
  --line: rgba(125, 160, 186, 0.18);
  --line-strong: rgba(125, 160, 186, 0.34);
  --text: #f2f7fb;
  --muted: #95a9bc;
  --accent: #6ef2c7;
  --accent-ink: #062018;
  --shadow: 0 28px 70px rgba(0, 0, 0, 0.4);
  --content-width: min(1180px, calc(100vw - 2rem));
  --header-height: 5.5rem;
}

body.light-mode {
  --bg: #eef3f8;
  --bg-deep: #dfe7ef;
  --surface: rgba(255, 255, 255, 0.86);
  --line: rgba(36, 62, 87, 0.14);
  --line-strong: rgba(36, 62, 87, 0.28);
  --text: #10202f;
  --muted: #53697c;
  --accent: #0d8d69;
  --accent-ink: #f2f7fb;
  --shadow: 0 28px 60px rgba(16, 32, 47, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: "IBM Plex Sans", sans-serif;
  background:
    radial-gradient(circle at top right, rgba(110, 242, 199, 0.16), transparent 28%),
    radial-gradient(circle at 18% 10%, rgba(110, 242, 199, 0.08), transparent 22%),
    linear-gradient(180deg, #0b1621 0%, var(--bg) 38%, var(--bg-deep) 100%);
}

body.light-mode {
  background:
    radial-gradient(circle at top right, rgba(13, 141, 105, 0.1), transparent 26%),
    radial-gradient(circle at 18% 10%, rgba(13, 141, 105, 0.06), transparent 22%),
    linear-gradient(180deg, #f7fafc 0%, var(--bg) 38%, var(--bg-deep) 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 120px 120px;
  mask-image: radial-gradient(circle at center, black 48%, transparent 100%);
}

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

.page-shell {
  position: relative;
  overflow: clip;
}

.site-header,
.hero,
.section,
.contact-section {
  width: var(--content-width);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  padding: 1rem 0.45rem;
  backdrop-filter: blur(16px);
}

.site-header::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}

.brand {
  display: inline-flex;
  gap: 0.9rem;
  align-items: center;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  color: var(--accent);
  background:
    radial-gradient(circle at center, rgba(110, 242, 199, 0.1), transparent 62%),
    rgba(4, 10, 16, 0.62);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.14em;
}

.brand-mark svg {
  width: 1.85rem;
  height: 1.85rem;
  overflow: visible;
}

.brand-mark circle,
.brand-mark path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
}

.brand-mark-ring {
  opacity: 0.95;
}

.brand-mark-grid {
  opacity: 0.28;
  stroke-width: 1.2;
}

.brand-mark-core {
  fill: currentColor;
  stroke: none;
  filter: drop-shadow(0 0 6px rgba(110, 242, 199, 0.55));
}

.brand-mark-sweep {
  stroke-linecap: round;
  opacity: 0.9;
  stroke-width: 2.2;
}

body.light-mode .brand-mark {
  background:
    radial-gradient(circle at center, rgba(13, 141, 105, 0.08), transparent 62%),
    rgba(255, 255, 255, 0.82);
}

body.light-mode .brand-mark-core {
  filter: drop-shadow(0 0 5px rgba(13, 141, 105, 0.35));
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 0.12rem;
}

.brand-copy strong,
.brand-copy small {
  line-height: 1;
}

.brand-copy strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.brand-copy small,
.site-nav {
  color: var(--muted);
}

.brand-copy small {
  font-size: 0.78rem;
}

.site-nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.92rem;
}

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

.site-nav a {
  position: relative;
  padding-bottom: 0.15rem;
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  transform: scaleX(0);
  transform-origin: right;
  background: var(--accent);
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.8rem;
  padding: 0.65rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text);
  font: inherit;
  background: rgba(7, 16, 24, 0.24);
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

body.light-mode .theme-toggle {
  background: rgba(255, 255, 255, 0.72);
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: 2.35rem;
  align-items: center;
  min-height: calc(100svh - var(--header-height));
  padding: 0.55rem 0 2rem;
}

.hero-copy {
  max-width: 34rem;
  opacity: 0;
  transform: translateY(24px);
  animation: rise-in 700ms ease forwards;
}

.eyebrow,
.entry-label {
  color: var(--accent);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 1rem;
}

.hero h1,
.section-intro h2,
.contact-copy h2,
.feature-title {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  line-height: 0.96;
  letter-spacing: -0.03em;
}

.hero h1 {
  font-size: clamp(3.05rem, 8vw, 5.95rem);
}

.operator-copy p,
.feature-summary,
.embed-header p,
.platform-copy p,
.certification-copy p,
.contact-copy p:last-child,
.timeline-item p,
.entry-summary {
  color: var(--muted);
  line-height: 1.75;
}

.hero-actions,
.contact-actions,
.platform-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.45rem;
}

.action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.8rem 1.25rem;
  border: 1px solid transparent;
  color: var(--text);
  font-weight: 500;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.action:hover,
.action:focus-visible {
  transform: translateY(-2px);
}

.action.primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.action.secondary {
  border-color: var(--line-strong);
  background: rgba(7, 16, 24, 0.38);
}

body.light-mode .action.secondary {
  background: rgba(255, 255, 255, 0.76);
  color: var(--text);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
  margin: 1.45rem 0 0;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}

.hero-metrics div {
  display: grid;
  gap: 0.3rem;
}

.hero-metrics dt {
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-metrics dd {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.6rem;
}

.hero-visual {
  position: relative;
  min-height: 42rem;
  isolation: isolate;
}

.signal-grid {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.05);
  background:
    linear-gradient(transparent 97%, rgba(255, 255, 255, 0.05) 97%),
    linear-gradient(90deg, transparent 97%, rgba(255, 255, 255, 0.05) 97%);
  background-size: 3.4rem 3.4rem;
  mask-image: linear-gradient(180deg, transparent 0%, black 18%, black 100%);
}

body.light-mode .signal-grid {
  border-color: rgba(36, 62, 87, 0.12);
  background:
    linear-gradient(transparent 97%, rgba(36, 62, 87, 0.12) 97%),
    linear-gradient(90deg, transparent 97%, rgba(36, 62, 87, 0.12) 97%);
  background-size: 3.4rem 3.4rem;
}

.signal-radar {
  position: absolute;
  inset: 12% 10% auto auto;
  width: min(70vw, 32rem);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, rgba(110, 242, 199, 0.14), transparent 44%),
    radial-gradient(circle at center, rgba(110, 242, 199, 0.08) 1px, transparent 1px);
  background-size: auto, 0.8rem 0.8rem;
  box-shadow: inset 0 0 80px rgba(0, 0, 0, 0.24);
}

body.light-mode .signal-radar {
  box-shadow: inset 0 0 80px rgba(16, 32, 47, 0.08);
}

.radar-ring,
.radar-core,
.radar-sweep {
  position: absolute;
  border-radius: 50%;
}

.radar-ring {
  inset: 0;
  border: 1px solid rgba(110, 242, 199, 0.18);
}

body.light-mode .radar-ring {
  border-color: rgba(13, 141, 105, 0.24);
}

.ring-2 {
  inset: 14%;
}

.ring-3 {
  inset: 28%;
}

.radar-core {
  inset: 46%;
  background: var(--accent);
  box-shadow: 0 0 16px rgba(110, 242, 199, 0.82);
}

body.light-mode .radar-core {
  box-shadow: 0 0 14px rgba(13, 141, 105, 0.42);
}

.radar-sweep {
  inset: 0;
  background: conic-gradient(from 0deg, rgba(110, 242, 199, 0.42), rgba(110, 242, 199, 0.03) 16%, transparent 32%);
  mix-blend-mode: screen;
  animation: sweep 6.5s linear infinite;
}

.radar-blip {
  display: none;
}

.mobile-radar-frame {
  display: none;
}

.mobile-radar-heading {
  display: none;
}

body.light-mode .radar-sweep {
  background: conic-gradient(from 0deg, rgba(13, 141, 105, 0.22), rgba(13, 141, 105, 0.02) 16%, transparent 32%);
  mix-blend-mode: multiply;
}

.signal-panel,
.embed-panel,
.platform-item,
.certification-item {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(8, 17, 27, 0.82), rgba(5, 10, 16, 0.94));
  box-shadow: var(--shadow);
}

body.light-mode .signal-panel,
body.light-mode .writeup-viewer {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(242, 247, 251, 0.96));
}

.signal-panel {
  position: absolute;
  padding: 1.2rem 1.3rem;
  backdrop-filter: blur(18px);
}

.signal-panel p,
.signal-panel span {
  margin: 0;
  color: var(--muted);
}

.signal-panel strong {
  display: block;
  margin: 0.35rem 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.3rem;
  font-weight: 500;
}

.signal-panel-top {
  top: 8%;
  left: 0;
  width: min(18rem, 48%);
  animation: float-panel 6s ease-in-out infinite;
}

.signal-panel-bottom {
  right: 0;
  bottom: 8%;
  width: min(20rem, 52%);
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  animation: float-panel 7.5s ease-in-out infinite reverse;
}

.footprint-panel-lead.signal-panel-top {
  top: 4.5%;
  width: min(17rem, 34%);
  z-index: 2;
}

.footprint-panel-grid.signal-panel-bottom {
  bottom: 10%;
  width: min(20.5rem, 42%);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  z-index: 1;
  justify-items: stretch;
}

.footprint-kicker {
  color: var(--accent) !important;
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.footprint-panel-lead strong {
  line-height: 1.05;
}

.footprint-panel-lead span {
  display: block;
  max-width: 18rem;
  line-height: 1.6;
}

.footprint-item {
  min-width: 0;
  padding: 0.82rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(7, 16, 24, 0.22);
  text-align: center;
}

body.light-mode .footprint-item {
  background: rgba(255, 255, 255, 0.66);
}

.footprint-item span {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footprint-item strong {
  display: block;
  margin-top: 0.45rem;
  color: var(--text);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.98rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.footprint-item-wide {
  grid-column: 1 / -1;
}

.tag-pill,
.entry-tags span {
  padding: 0.45rem 0.68rem;
  font-size: 0.82rem;
}

.tag-pill {
  border: 1px solid rgba(110, 242, 199, 0.22);
  color: #cbfdf0;
  background: rgba(110, 242, 199, 0.08);
}

.timeline-label,
.platform-meta,
.certification-meta {
  color: var(--muted);
}

.section,
.contact-section {
  padding: 3.6rem 0 4.2rem;
  border-top: 1px solid var(--line);
}

.section-intro,
.contact-copy {
  max-width: 48rem;
}

.section-intro {
  margin-bottom: 2.5rem;
}

.section-note {
  margin: 0.9rem 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.mobile-profile-note {
  display: none;
  margin: 1rem 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.mobile-business-card {
  position: relative;
  display: none;
  overflow: hidden;
  margin-top: 1.5rem;
  padding: 1.25rem;
  border: 1px solid var(--line-strong);
  border-radius: 1.6rem;
  background:
    radial-gradient(circle at top right, rgba(110, 242, 199, 0.2), transparent 34%),
    linear-gradient(160deg, rgba(8, 17, 27, 0.96), rgba(4, 10, 16, 0.92));
  box-shadow: var(--shadow);
}

body.light-mode .mobile-business-card {
  background:
    radial-gradient(circle at top right, rgba(13, 141, 105, 0.16), transparent 34%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.98), rgba(236, 242, 247, 0.96));
}

.mobile-business-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: radial-gradient(circle at center, black 46%, transparent 100%);
  opacity: 0.34;
}

body.light-mode .mobile-business-card::before {
  background-image:
    linear-gradient(rgba(13, 141, 105, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 141, 105, 0.08) 1px, transparent 1px);
}

.mobile-business-card-copy,
.mobile-business-card-qr-shell {
  position: relative;
  z-index: 1;
}

.mobile-business-card-identity {
  display: grid;
}

.mobile-business-card-kicker {
  margin: 0;
  color: var(--accent);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.mobile-business-card-title {
  margin: 0.5rem 0 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2rem, 8vw, 2.6rem);
  line-height: 0.94;
  letter-spacing: -0.04em;
  word-break: keep-all;
}

.mobile-business-card-title span {
  display: block;
  white-space: nowrap;
}

.mobile-business-card-degree {
  margin: 0.65rem 0 0;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mobile-business-card-summary {
  margin: 0.85rem 0 0;
  max-width: 15rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.mobile-business-card-qr-shell {
  display: grid;
  gap: 0.55rem;
  justify-items: center;
  align-self: stretch;
  align-content: center;
  padding: 0.68rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 1.25rem;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
}

body.light-mode .mobile-business-card-qr-shell {
  border-color: rgba(13, 141, 105, 0.14);
  background: rgba(255, 255, 255, 0.72);
}

.mobile-business-card-qr {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  max-width: 10.1rem;
  padding: 0.6rem;
  border-radius: 0.9rem;
  background: #ffffff;
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.22);
}

.mobile-business-card-scan {
  color: var(--muted);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-intro h2,
.contact-copy h2 {
  font-size: clamp(2.2rem, 6vw, 4.1rem);
}

.operator-layout,
.writeup-feature,
.presence-grid,
.contact-section {
  display: grid;
  gap: 2rem;
}

.operator-layout {
  grid-template-columns: minmax(0, 1.1fr) minmax(20rem, 0.9fr);
}

.focus-list,
.timeline,
.entry-list,
.platform-list,
.certification-grid {
  display: grid;
}

.focus-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem 1rem;
  padding: 1.8rem 0 0;
  margin: 0;
  list-style: none;
}

.focus-list li,
.feature-stat {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.focus-list strong,
.timeline-item strong,
.feature-stat strong,
.embed-header h3,
.platform-copy h3,
.certification-copy h3 {
  display: block;
  margin-bottom: 0.35rem;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 500;
}

.timeline-item {
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: 1.2rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

.entry {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr) minmax(0, 0.5fr);
  gap: 1.5rem;
  align-items: start;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}

.entry:last-child {
  border-bottom: 1px solid var(--line);
}

.entry-meta {
  display: grid;
  gap: 0.45rem;
}

.entry-title {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.55rem;
  line-height: 1.05;
}

.entry-summary,
.feature-summary,
.embed-header p,
.platform-copy p,
.certification-copy p {
  margin: 0;
}

.entry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.9rem;
}

.entry-tags span {
  border: 1px solid var(--line);
  color: var(--muted);
}

.entry-link,
.platform-link,
.cert-link {
  color: var(--accent);
  font-weight: 500;
}

.entry-link {
  justify-self: end;
  align-self: center;
}

.entry-link:hover,
.entry-link:focus-visible,
.platform-link:hover,
.platform-link:focus-visible,
.cert-link:hover,
.cert-link:focus-visible {
  text-decoration: underline;
  text-decoration-thickness: 1px;
}

.tool-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.2rem;
}

.tool-panel {
  min-width: 0;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(8, 17, 27, 0.82), rgba(5, 10, 16, 0.94));
  box-shadow: var(--shadow);
  padding: 1.4rem;
}

body.light-mode .tool-panel {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(242, 247, 251, 0.96));
}

.tool-header h3 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.4rem;
}

.tool-header p,
.tool-label,
.tool-error,
.tool-result-row span {
  color: var(--muted);
}

.tool-header p {
  margin: 0.55rem 0 0;
  line-height: 1.7;
}

.tool-controls {
  display: grid;
  min-width: 0;
  gap: 1rem;
  margin-top: 1.25rem;
}

.tool-label {
  display: block;
  margin: 0;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.tool-input,
.tool-output,
.tool-select,
.tool-textarea,
.tool-file {
  width: 100%;
  min-height: 3.2rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 0.9rem;
  color: var(--text);
  font: inherit;
  background: rgba(7, 16, 24, 0.34);
}

.tool-input::placeholder,
.tool-textarea::placeholder {
  color: var(--muted);
  opacity: 1;
}

body.light-mode .tool-input,
body.light-mode .tool-output,
body.light-mode .tool-select,
body.light-mode .tool-textarea,
body.light-mode .tool-file {
  background: rgba(255, 255, 255, 0.85);
  color: var(--text);
}

.tool-input,
.tool-select,
.tool-textarea,
.tool-file {
  outline: none;
}

.tool-input:focus-visible,
.tool-select:focus-visible,
.tool-textarea:focus-visible,
.tool-file:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(110, 242, 199, 0.18);
}

.tool-label-value {
  color: var(--accent);
}

.tool-range {
  width: 100%;
  accent-color: var(--accent);
}

.tool-checks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  color: var(--text);
}

.tool-checks label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.tool-button {
  border: 0;
  cursor: pointer;
  font: inherit;
}

.tool-monospace {
  font-family: Consolas, "Courier New", monospace;
}

.tool-output {
  display: grid;
  min-width: 0;
  align-items: center;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.tool-textarea {
  resize: vertical;
}

.tool-mode-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  padding: 0.55rem;
  border: 1px solid var(--line-strong);
  border-radius: 1rem;
  background:
    linear-gradient(180deg, rgba(110, 242, 199, 0.06), rgba(7, 16, 24, 0.18)),
    rgba(7, 16, 24, 0.28);
}

body.light-mode .tool-mode-bar {
  background:
    linear-gradient(180deg, rgba(13, 141, 105, 0.05), rgba(255, 255, 255, 0.72)),
    rgba(255, 255, 255, 0.72);
}

.tool-mode-option {
  flex: 1 1 10rem;
  min-height: 2.9rem;
  padding: 0.7rem 1rem;
  border: 1px solid transparent;
  border-radius: 0.8rem;
  color: var(--muted);
  font: inherit;
  font-weight: 500;
  background: transparent;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}

.tool-mode-option:hover,
.tool-mode-option:focus-visible {
  border-color: var(--line-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

body.light-mode .tool-mode-option:hover,
body.light-mode .tool-mode-option:focus-visible {
  background: rgba(255, 255, 255, 0.8);
}

.tool-mode-option.is-active {
  border-color: rgba(110, 242, 199, 0.32);
  color: var(--text);
  background: linear-gradient(180deg, rgba(110, 242, 199, 0.18), rgba(8, 17, 27, 0.44));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

body.light-mode .tool-mode-option.is-active {
  border-color: rgba(13, 141, 105, 0.3);
  background: linear-gradient(180deg, rgba(13, 141, 105, 0.12), rgba(255, 255, 255, 0.94));
}

.tool-file {
  padding: 0.4rem;
}

.tool-file::file-selector-button {
  margin-right: 0.9rem;
  padding: 0.7rem 1rem;
  border: 0;
  border-radius: 999px;
  color: var(--accent-ink);
  font: inherit;
  font-weight: 600;
  background: var(--accent);
  cursor: pointer;
}

.tool-results {
  display: grid;
  gap: 0.7rem;
}

.tool-stack {
  display: grid;
  min-width: 0;
  gap: 1rem;
}

.tool-pre,
.tool-preview {
  overflow: auto;
  max-width: 100%;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  background: rgba(7, 16, 24, 0.22);
  color: var(--text);
  font-family: Consolas, "Courier New", monospace;
  white-space: pre-wrap;
  word-break: break-word;
}

body.light-mode .tool-pre,
body.light-mode .tool-preview {
  background: rgba(255, 255, 255, 0.72);
}

.tool-preview mark {
  padding: 0.05rem 0.18rem;
  border-radius: 0.25rem;
  color: var(--accent-ink);
  background: var(--accent);
}

.tool-results {
  display: grid;
  gap: 0.7rem;
}

.tool-result-row {
  display: grid;
  grid-template-columns: minmax(0, 12rem) minmax(0, 1fr);
  align-items: start;
  gap: 1rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  background: rgba(7, 16, 24, 0.18);
}

body.light-mode .tool-result-row {
  background: rgba(255, 255, 255, 0.68);
}

.tool-result-row.is-match {
  border-color: rgba(110, 242, 199, 0.38);
  background: linear-gradient(180deg, rgba(110, 242, 199, 0.12), rgba(7, 16, 24, 0.18));
}

body.light-mode .tool-result-row.is-match {
  background: linear-gradient(180deg, rgba(13, 141, 105, 0.1), rgba(255, 255, 255, 0.84));
}

.tool-result-row strong {
  min-width: 0;
  font-family: Consolas, "Courier New", monospace;
  font-weight: 600;
  text-align: left;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.tool-error {
  margin: 0;
  padding: 0.9rem 1rem;
  border-radius: 0.9rem;
  border: 1px solid rgba(189, 76, 76, 0.32);
  background: rgba(189, 76, 76, 0.12);
}

.tool-panel.is-wide {
  grid-column: auto;
}

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

.writeup-browser {
  display: grid;
  gap: 1.75rem;
}

.writeup-browser,
.writeup-groups,
.writeup-group,
.writeup-list-group,
.writeup-viewer,
.writeup-viewer-body,
.markdown-body {
  min-width: 0;
}

.writeup-toolbar {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.writeup-toolbar-search {
  max-width: 42rem;
}

.writeup-toolbar-row,
.writeup-toolbar-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
  justify-content: space-between;
}

.writeup-filter-group,
.writeup-tag-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.writeup-filter-button,
.writeup-tag-button,
.writeup-code-copy {
  min-height: 2.8rem;
  padding: 0.65rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--text);
  font: inherit;
  background: rgba(7, 16, 24, 0.28);
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}

body.light-mode .writeup-filter-button,
body.light-mode .writeup-tag-button,
body.light-mode .writeup-code-copy {
  background: rgba(255, 255, 255, 0.74);
}

.writeup-filter-button:hover,
.writeup-filter-button:focus-visible,
.writeup-tag-button:hover,
.writeup-tag-button:focus-visible,
.writeup-code-copy:hover,
.writeup-code-copy:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.writeup-filter-button.is-active,
.writeup-tag-button.is-active {
  border-color: rgba(110, 242, 199, 0.32);
  background: linear-gradient(180deg, rgba(110, 242, 199, 0.14), rgba(7, 16, 24, 0.34));
}

body.light-mode .writeup-filter-button.is-active,
body.light-mode .writeup-tag-button.is-active {
  border-color: rgba(13, 141, 105, 0.3);
  background: linear-gradient(180deg, rgba(13, 141, 105, 0.1), rgba(255, 255, 255, 0.94));
}

.writeup-filter-count {
  color: var(--muted);
  font-size: 0.92rem;
}

.writeup-groups {
  display: grid;
  gap: 1.4rem;
  align-content: start;
}

.writeup-group,
.writeup-viewer {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(8, 17, 27, 0.82), rgba(5, 10, 16, 0.94));
  box-shadow: var(--shadow);
}

.writeup-group {
  padding: 1.25rem 0 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.writeup-group-header {
  padding: 0 0 1rem;
  border-bottom: 1px solid var(--line);
}

.writeup-group-header p:last-child,
.writeup-item-summary,
.writeup-viewer-empty p,
.writeup-viewer-meta,
.writeup-status,
.writeup-error,
.writeup-viewer-body,
.markdown-body {
  color: var(--muted);
}

.writeup-group-header p:last-child,
.writeup-viewer-empty p,
.writeup-status,
.writeup-error {
  margin: 0.45rem 0 0;
  line-height: 1.7;
}

.writeup-list-group {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(8.5rem, 1fr));
  gap: 1rem;
  padding-top: 1rem;
}

.writeup-item {
  width: 100%;
  min-height: 10.5rem;
  display: grid;
  justify-items: center;
  align-content: start;
  gap: 0.7rem;
  padding: 1rem 0.8rem 0.9rem;
  border: 1px solid transparent;
  border-radius: 1rem;
  color: inherit;
  text-align: center;
  background: transparent;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.writeup-item:hover,
.writeup-item:focus-visible {
  transform: translateY(-2px);
  border-color: var(--line);
  background: rgba(8, 17, 27, 0.42);
}

body.light-mode .writeup-item:hover,
body.light-mode .writeup-item:focus-visible {
  background: rgba(255, 255, 255, 0.72);
}

.writeup-item.is-active {
  border-color: rgba(110, 242, 199, 0.26);
  background: linear-gradient(180deg, rgba(110, 242, 199, 0.08), rgba(8, 17, 27, 0.48));
}

body.light-mode .writeup-item.is-active {
  border-color: rgba(13, 141, 105, 0.28);
  background: linear-gradient(180deg, rgba(13, 141, 105, 0.08), rgba(255, 255, 255, 0.82));
}

.writeup-item.is-active .writeup-item-title,
.writeup-item.is-active .writeup-item-icon {
  color: var(--accent);
}

.writeup-item[data-writeup-tone="thm"] .writeup-item-icon {
  color: #ff6b6b;
}

.writeup-item[data-writeup-tone="htb"] .writeup-item-icon {
  color: #6ef2a3;
}

.writeup-item[data-writeup-tone="ctf"] .writeup-item-icon {
  color: #68b5ff;
}

.writeup-item.is-active[data-writeup-tone="thm"] {
  border-color: rgba(255, 107, 107, 0.35);
  background: linear-gradient(180deg, rgba(255, 107, 107, 0.1), rgba(8, 17, 27, 0.48));
}

.writeup-item.is-active[data-writeup-tone="htb"] {
  border-color: rgba(110, 242, 163, 0.35);
  background: linear-gradient(180deg, rgba(110, 242, 163, 0.1), rgba(8, 17, 27, 0.48));
}

.writeup-item.is-active[data-writeup-tone="ctf"] {
  border-color: rgba(104, 181, 255, 0.35);
  background: linear-gradient(180deg, rgba(104, 181, 255, 0.1), rgba(8, 17, 27, 0.48));
}

body.light-mode .writeup-item.is-active[data-writeup-tone="thm"] {
  border-color: rgba(255, 107, 107, 0.35);
  background: linear-gradient(180deg, rgba(255, 107, 107, 0.08), rgba(255, 255, 255, 0.84));
}

body.light-mode .writeup-item.is-active[data-writeup-tone="htb"] {
  border-color: rgba(110, 242, 163, 0.4);
  background: linear-gradient(180deg, rgba(110, 242, 163, 0.08), rgba(255, 255, 255, 0.84));
}

body.light-mode .writeup-item.is-active[data-writeup-tone="ctf"] {
  border-color: rgba(104, 181, 255, 0.4);
  background: linear-gradient(180deg, rgba(104, 181, 255, 0.08), rgba(255, 255, 255, 0.84));
}

.writeup-item-icon {
  width: 4.8rem;
  height: 5.6rem;
  color: rgba(201, 214, 226, 0.9);
}

.writeup-item-icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
  stroke: rgba(7, 16, 24, 0.46);
  stroke-width: 2.4;
  stroke-linejoin: round;
}

.writeup-item-label,
.writeup-viewer-meta,
.writeup-status {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.writeup-item-label,
.writeup-viewer-meta {
  color: var(--muted);
}

.writeup-item-title,
.writeup-viewer h3 {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 500;
  line-height: 1.15;
}

.writeup-item-title {
  margin: 0;
  max-width: 9rem;
  font-size: 0.95rem;
  word-break: break-word;
}

.writeup-viewer h3 {
  margin: 0.35rem 0 0;
  font-size: 1.15rem;
  font-weight: 500;
}

.writeup-item-summary {
  margin: 0.6rem 0 0;
  line-height: 1.65;
}

.writeup-item-tags,
.writeup-viewer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.8rem;
}

.writeup-item-tags span,
.writeup-viewer-tags span {
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--line);
  font-size: 0.78rem;
}

.writeup-viewer {
  min-height: 28rem;
  width: 100%;
  padding: 1.6rem;
}

.writeup-viewer-empty {
  display: grid;
  place-items: center;
  min-height: 100%;
  padding: 1.2rem;
  text-align: center;
}

.writeup-viewer-header {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.writeup-viewer-header h3 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.writeup-viewer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1rem;
}

.writeup-toc-panel {
  margin-top: 1.2rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  background: rgba(7, 16, 24, 0.18);
}

body.light-mode .writeup-toc-panel {
  background: rgba(255, 255, 255, 0.68);
}

.writeup-toc {
  display: grid;
  gap: 0.45rem;
  margin-top: 0.75rem;
}

.writeup-toc-link {
  display: block;
  color: var(--muted);
  line-height: 1.5;
}

.writeup-toc-link.level-3,
.writeup-toc-link.level-4 {
  padding-left: 0.9rem;
}

.writeup-toc-link:hover,
.writeup-toc-link:focus-visible {
  color: var(--accent);
}

.writeup-viewer-link {
  color: var(--accent);
  font-weight: 500;
}

.writeup-viewer-link:hover,
.writeup-viewer-link:focus-visible {
  text-decoration: underline;
}

.writeup-viewer-body {
  margin-top: 1.4rem;
}

.writeup-viewer-footer {
  margin-top: 1.6rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.writeup-viewer-pagination {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.writeup-nav-button {
  width: 100%;
  min-width: 0;
  justify-content: flex-start;
  text-align: left;
}

.writeup-nav-button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.markdown-body {
  max-width: none;
  font-size: 1rem;
  line-height: 1.85;
}

.markdown-body p,
.markdown-body li,
.markdown-body blockquote,
.markdown-body a,
.markdown-body code,
.markdown-body strong,
.markdown-body em,
.markdown-body td,
.markdown-body th {
  overflow-wrap: anywhere;
}

.markdown-body > :first-child {
  margin-top: 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4 {
  margin: 2rem 0 0.8rem;
  scroll-margin-top: calc(var(--header-height) + 1rem);
  color: var(--text);
  font-family: "Space Grotesk", sans-serif;
  line-height: 1.1;
}

.markdown-body p,
.markdown-body ul,
.markdown-body ol,
.markdown-body blockquote,
.markdown-body pre {
  margin: 0 0 1.1rem;
}

.markdown-body ul,
.markdown-body ol {
  padding-left: 1.4rem;
}

.markdown-body li + li {
  margin-top: 0.35rem;
}

.markdown-body a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
}

.markdown-body code {
  padding: 0.15rem 0.35rem;
  border: 1px solid var(--line);
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.92em;
  background: rgba(110, 242, 199, 0.08);
}

body.light-mode .markdown-body code {
  background: rgba(16, 32, 47, 0.06);
  color: #173042;
}

.markdown-body pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 1rem;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.3);
}

.writeup-code-block {
  position: relative;
}

.writeup-code-block pre {
  padding-top: 3.1rem;
}

.writeup-code-copy {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  min-height: 2.2rem;
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
}

body.light-mode .markdown-body pre {
  border-color: rgba(36, 62, 87, 0.12);
  background: #f4f7fa;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.75);
}

.markdown-body pre code {
  padding: 0;
  border: 0;
  background: transparent;
}

body.light-mode .markdown-body pre code {
  color: #173042;
}

.markdown-body blockquote {
  padding-left: 1rem;
  border-left: 2px solid var(--accent);
}

.markdown-body img,
.markdown-body iframe,
.markdown-body video,
.markdown-body embed,
.markdown-body object {
  display: block;
  max-width: 100%;
}

.markdown-body img {
  width: 100%;
  height: auto;
  margin: 1.25rem 0;
  border: 1px solid var(--line);
}

.markdown-body table {
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}

.markdown-body th,
.markdown-body td {
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  text-align: left;
}

.feature-title {
  font-size: clamp(2rem, 5vw, 3.35rem);
}

.feature-sidebar {
  display: grid;
  gap: 1rem;
}

.feature-summary {
  margin-top: 1rem;
}

.embed-panel,
.platform-item,
.certification-item {
  padding: 1.4rem;
}

.certification-item {
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.embed-header,
.platform-copy,
.certification-copy {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
}

.platform-meta,
.certification-meta {
  margin: 0.45rem 0 0;
}

.embed-frame,
.embed-placeholder,
.certification-link {
  width: 100%;
  margin-top: 1rem;
  min-height: 16rem;
}

.embed-frame {
  border: 0;
  background: rgba(0, 0, 0, 0.24);
}

.embed-placeholder,
.certification-link {
  display: grid;
  place-items: center;
  padding: 1.4rem;
  border: 1px dashed var(--line-strong);
  background: linear-gradient(135deg, rgba(110, 242, 199, 0.05), transparent 52%), rgba(4, 9, 15, 0.56);
  text-align: center;
}

.certification-link {
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.certification-image {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.8rem;
  border: 1px solid var(--line);
  background: transparent;
}

.certification-link:hover .certification-image,
.certification-link:focus-visible .certification-image {
  border-color: var(--accent);
}

.embed-placeholder strong {
  display: block;
  margin-bottom: 0.45rem;
  font-family: "Space Grotesk", sans-serif;
}

.certification-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 260px));
  gap: 1rem;
  align-items: start;
  justify-content: start;
}

.presence-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.presence-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.8rem 1.15rem;
  border: 1px solid var(--line-strong);
  color: var(--text);
  font-weight: 500;
  background: rgba(7, 16, 24, 0.22);
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

body.light-mode .presence-link {
  background: rgba(255, 255, 255, 0.7);
}

.presence-link:hover,
.presence-link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--accent);
}

body.light-mode .presence-link:hover,
body.light-mode .presence-link:focus-visible {
  background: rgba(255, 255, 255, 0.92);
}

.contact-section {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  padding-bottom: 5rem;
}

[data-reveal] {
  opacity: 1;
  transform: translateY(0);
}

body.motion-ready [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 600ms ease, transform 600ms ease;
}

body.motion-ready [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes sweep {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes float-panel {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes radar-blip-sync {
  0%, 3%, 100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(255, 82, 82, 0.18);
  }
  1.5%, 4.5% {
    transform: scale(1.18);
    box-shadow:
      0 0 0 0.48rem rgba(255, 82, 82, 0),
      0 0 18px rgba(255, 82, 82, 0.62);
  }
  7%, 96% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(255, 82, 82, 0.12);
  }
}

@keyframes rise-in {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1080px) {
  .hero,
  .operator-layout,
  .writeup-browser,
  .presence-grid,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 1.2rem;
  }

  .hero-visual {
    min-height: 34rem;
  }

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

  .tool-panel.is-wide {
    grid-column: auto;
  }

  .writeup-toolbar-row,
  .writeup-toolbar-meta {
    align-items: flex-start;
  }
}

@media (max-width: 960px) {
  body.mobile-lite .site-nav a[href="#writeups"],
  body.mobile-lite .site-nav a[href="#certifications"] {
    display: none;
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    min-height: auto;
    padding-bottom: 1.1rem;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 0.9rem 1rem;
  }

  .header-actions {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
  }

  .hero h1 {
    font-size: clamp(2.9rem, 17vw, 4.4rem);
  }

  .hero-metrics,
  .focus-list,
  .certification-grid,
  .tool-checks {
    grid-template-columns: 1fr;
  }

  .tool-panel.is-wide {
    grid-column: auto;
  }

  .tool-result-row {
    grid-template-columns: 1fr;
  }

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

  .entry-link {
    justify-self: start;
  }

  .signal-radar {
    inset: 10% 0 auto auto;
    width: min(84vw, 25rem);
  }

  .signal-panel-top,
  .signal-panel-bottom {
    position: relative;
    inset: auto;
    width: 100%;
    margin-top: 1rem;
  }

  .hero-visual {
    display: flex;
    flex-direction: column;
    min-height: auto;
  }

  body.mobile-lite .hero {
    display: flex;
    position: relative;
    align-items: center;
    justify-content: center;
    min-height: calc(100svh - var(--header-offset, var(--header-height)));
    padding: 0.4rem 0 1rem;
    overflow: hidden;
  }

  body.mobile-lite .hero-copy {
    display: none;
  }

  body.mobile-lite .hero-visual {
    display: block;
    position: absolute;
    inset: 0;
    min-height: 100%;
    pointer-events: none;
  }

  body.mobile-lite .hero-metrics,
  body.mobile-lite .list-section,
  body.mobile-lite .certification-section {
    display: none;
  }

  body.mobile-lite .hero-visual .signal-panel-top,
  body.mobile-lite .hero-visual .signal-panel-bottom {
    display: none;
  }

  body.mobile-lite .hero-visual .mobile-radar-frame {
    position: absolute;
    inset: 8% 7% 11%;
    z-index: 1;
    display: grid;
    align-content: end;
    justify-items: start;
    padding: 0.9rem 1rem 1.05rem;
    border: 1px solid rgba(110, 242, 199, 0.12);
    border-radius: 1.6rem;
    background:
      linear-gradient(180deg, rgba(5, 10, 16, 0.1), rgba(5, 10, 16, 0)),
      linear-gradient(90deg, rgba(110, 242, 199, 0.03), transparent 24%, transparent 76%, rgba(110, 242, 199, 0.03));
    box-shadow:
      inset 0 0 0 1px rgba(255, 255, 255, 0.02),
      0 0 0 1px rgba(110, 242, 199, 0.03);
    pointer-events: none;
  }

  body.mobile-lite .hero-visual .mobile-radar-heading {
    position: absolute;
    top: calc(8% - 1.45rem);
    left: 50%;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.2rem;
    padding: 0.35rem 0.95rem;
    border: 1px solid rgba(110, 242, 199, 0.14);
    border-radius: 999px;
    color: var(--text);
    font-family: "Space Grotesk", sans-serif;
    font-size: clamp(0.98rem, 4.4vw, 1.18rem);
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    white-space: nowrap;
    background: rgba(4, 10, 16, 0.58);
    box-shadow:
      0 0 0 1px rgba(255, 255, 255, 0.02),
      0 12px 28px rgba(0, 0, 0, 0.22);
    transform: translateX(-50%);
    pointer-events: none;
    backdrop-filter: blur(12px);
  }

  body.light-mode.mobile-lite .hero-visual .mobile-radar-heading {
    border-color: rgba(13, 141, 105, 0.14);
    background: rgba(255, 255, 255, 0.82);
    box-shadow:
      0 0 0 1px rgba(255, 255, 255, 0.48),
      0 10px 22px rgba(16, 32, 47, 0.08);
  }

  body.light-mode.mobile-lite .hero-visual .mobile-radar-frame {
    border-color: rgba(13, 141, 105, 0.12);
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0)),
      linear-gradient(90deg, rgba(13, 141, 105, 0.025), transparent 24%, transparent 76%, rgba(13, 141, 105, 0.025));
    box-shadow:
      inset 0 0 0 1px rgba(255, 255, 255, 0.35),
      0 0 0 1px rgba(13, 141, 105, 0.025);
  }

  body.mobile-lite .hero-visual .mobile-radar-title,
  body.mobile-lite .hero-visual .mobile-radar-status {
    font-family: "Space Grotesk", sans-serif;
    text-transform: uppercase;
    white-space: nowrap;
  }

  body.mobile-lite .hero-visual .mobile-radar-title {
    color: var(--accent);
    font-size: 0.7rem;
    letter-spacing: 0.18em;
  }

  body.mobile-lite .hero-visual .mobile-radar-status {
    margin-top: 0.42rem;
    color: var(--muted);
    font-size: 0.62rem;
    letter-spacing: 0.12em;
  }

  body.mobile-lite .hero-visual::before,
  body.mobile-lite .hero-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
  }

  body.mobile-lite .hero-visual::before {
    background:
      radial-gradient(circle at 50% 50%, rgba(110, 242, 199, 0.12), transparent 26%),
      radial-gradient(circle at 50% 50%, rgba(110, 242, 199, 0.08), transparent 44%),
      radial-gradient(circle at 50% 50%, rgba(110, 242, 199, 0.04), transparent 62%);
    filter: blur(10px);
    opacity: 0.95;
  }

  body.light-mode.mobile-lite .hero-visual::before {
    background:
      radial-gradient(circle at 50% 50%, rgba(13, 141, 105, 0.1), transparent 26%),
      radial-gradient(circle at 50% 50%, rgba(13, 141, 105, 0.06), transparent 44%),
      radial-gradient(circle at 50% 50%, rgba(13, 141, 105, 0.035), transparent 62%);
  }

  body.mobile-lite .hero-visual::after {
    background:
      radial-gradient(circle at 50% 50%, transparent 54%, rgba(3, 7, 12, 0.16) 82%, rgba(3, 7, 12, 0.34) 100%),
      linear-gradient(180deg, rgba(3, 7, 12, 0.1), rgba(3, 7, 12, 0));
  }

  body.light-mode.mobile-lite .hero-visual::after {
    background:
      radial-gradient(circle at 50% 50%, transparent 56%, rgba(238, 243, 248, 0.04) 82%, rgba(223, 231, 239, 0.18) 100%),
      linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0));
  }

  body.mobile-lite .hero-visual .signal-grid {
    display: block;
    inset: 2% -4%;
    opacity: 0.24;
    mask-image: radial-gradient(circle at center, transparent 10%, black 28%, black 58%, transparent 84%);
  }

  body.light-mode.mobile-lite .hero-visual .signal-grid {
    opacity: 0.18;
  }

  body.mobile-lite .hero-visual .signal-radar {
    inset: 50% auto auto 50%;
    width: min(112vw, 34rem);
    transform: translate(-50%, -50%);
    opacity: 0.96;
    background:
      radial-gradient(circle at center, rgba(110, 242, 199, 0.24), rgba(110, 242, 199, 0.14) 16%, rgba(110, 242, 199, 0.06) 38%, transparent 62%),
      radial-gradient(circle at center, rgba(110, 242, 199, 0.09) 1px, transparent 1px),
      radial-gradient(circle at center, rgba(110, 242, 199, 0.045) 1px, transparent 1px);
    background-size: auto, 0.85rem 0.85rem, 2.2rem 2.2rem;
    box-shadow:
      inset 0 0 108px rgba(0, 0, 0, 0.18),
      0 0 54px rgba(110, 242, 199, 0.16),
      0 0 132px rgba(110, 242, 199, 0.09);
  }

  body.light-mode.mobile-lite .hero-visual .signal-radar {
    background:
      radial-gradient(circle at center, rgba(13, 141, 105, 0.17), rgba(13, 141, 105, 0.095) 16%, rgba(13, 141, 105, 0.04) 38%, transparent 62%),
      radial-gradient(circle at center, rgba(13, 141, 105, 0.075) 1px, transparent 1px),
      radial-gradient(circle at center, rgba(13, 141, 105, 0.04) 1px, transparent 1px);
    background-size: auto, 0.85rem 0.85rem, 2.2rem 2.2rem;
    box-shadow:
      inset 0 0 82px rgba(16, 32, 47, 0.08),
      0 0 34px rgba(13, 141, 105, 0.12),
      0 0 88px rgba(13, 141, 105, 0.05);
  }

  body.mobile-lite .hero-visual .radar-ring {
    border-color: rgba(110, 242, 199, 0.22);
    box-shadow: inset 0 0 12px rgba(110, 242, 199, 0.05);
  }

  body.light-mode.mobile-lite .hero-visual .radar-ring {
    border-color: rgba(13, 141, 105, 0.2);
    box-shadow: inset 0 0 10px rgba(13, 141, 105, 0.04);
  }

  body.mobile-lite .hero-visual .ring-2 {
    border-width: 1.35px;
    box-shadow:
      inset 0 0 14px rgba(110, 242, 199, 0.06),
      0 0 14px rgba(110, 242, 199, 0.08);
  }

  body.mobile-lite .hero-visual .radar-core {
    box-shadow:
      0 0 16px rgba(110, 242, 199, 0.44),
      0 0 34px rgba(110, 242, 199, 0.22);
    opacity: 0.78;
  }

  body.light-mode.mobile-lite .hero-visual .radar-core {
    box-shadow:
      0 0 14px rgba(13, 141, 105, 0.34),
      0 0 28px rgba(13, 141, 105, 0.16);
  }

  body.mobile-lite .hero-visual .radar-sweep {
    background: conic-gradient(from 0deg, rgba(110, 242, 199, 0.34), rgba(110, 242, 199, 0.05) 14%, transparent 31%);
    opacity: 0.82;
  }

  body.light-mode.mobile-lite .hero-visual .radar-sweep {
    background: conic-gradient(from 0deg, rgba(13, 141, 105, 0.22), rgba(13, 141, 105, 0.03) 14%, transparent 31%);
  }

  body.mobile-lite .hero-visual .radar-blip {
    position: absolute;
    top: 22.5%;
    left: 73%;
    z-index: 3;
    display: grid;
    gap: 0.35rem;
    justify-items: start;
    padding: 0;
    border: 0;
    color: #ff6565;
    font: inherit;
    background: transparent;
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.92);
    pointer-events: auto;
    cursor: pointer;
    transition: transform 220ms ease, opacity 220ms ease, filter 220ms ease;
  }

  body.mobile-lite .hero-visual .radar-blip.is-visible {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }

  body.mobile-lite .hero-visual .radar-blip:hover,
  body.mobile-lite .hero-visual .radar-blip:focus-visible,
  body.mobile-lite .hero-visual .radar-blip.is-armed {
    filter: drop-shadow(0 0 10px rgba(255, 101, 101, 0.42));
  }

  body.mobile-lite .hero-visual .radar-blip-dot {
    width: 0.92rem;
    aspect-ratio: 1;
    border-radius: 50%;
    background: #ff5252;
    box-shadow: 0 0 0 0 rgba(255, 82, 82, 0.22);
  }

  body.mobile-lite .hero-visual .radar-blip.is-visible .radar-blip-dot {
    animation: radar-blip-sync 6.5s linear -0.68s infinite;
  }

  body.mobile-lite .hero-visual .radar-blip-callout {
    font-family: "Space Grotesk", sans-serif;
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-0.35rem);
    transition: opacity 180ms ease, transform 180ms ease;
  }

  body.mobile-lite .hero-visual .radar-blip:hover .radar-blip-callout,
  body.mobile-lite .hero-visual .radar-blip:focus-visible .radar-blip-callout,
  body.mobile-lite .hero-visual .radar-blip:active .radar-blip-callout {
    opacity: 1;
    transform: translateX(0);
  }

  body.mobile-lite .mobile-business-card {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(12rem, 1fr) 10.4rem;
    align-items: start;
    gap: 1.1rem;
    width: min(100%, 26.5rem);
    min-height: 15.5rem;
    margin: 0 auto;
    padding: 1.5rem 1.35rem;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(2.1rem) scale(0.94);
    opacity: 0;
    transition: transform 260ms ease, opacity 260ms ease, border-color 260ms ease, box-shadow 260ms ease;
    backdrop-filter: blur(18px);
  }

  body.mobile-lite .mobile-business-card.is-raised {
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0) scale(1);
    opacity: 1;
    border-color: rgba(110, 242, 199, 0.28);
    box-shadow: 0 34px 72px rgba(0, 0, 0, 0.42);
  }

  body.light-mode.mobile-lite .mobile-business-card.is-raised {
    border-color: rgba(13, 141, 105, 0.22);
    box-shadow: 0 28px 58px rgba(16, 32, 47, 0.18);
  }

  body.mobile-lite .mobile-business-card-copy {
    display: grid;
    grid-template-rows: auto 1fr;
    min-width: 0;
    min-height: 100%;
    padding-right: 0.25rem;
    text-align: left;
  }

  body.mobile-lite .mobile-business-card-kicker {
    justify-self: start;
    width: 100%;
    text-align: left;
  }

  body.mobile-lite .mobile-business-card-identity {
    align-self: center;
    transform: translateY(-0.7rem);
  }

  body.mobile-lite .mobile-business-card-summary {
    display: none;
  }

  body.mobile-lite .mobile-business-card-title {
    font-size: clamp(1.9rem, 6.7vw, 2.55rem);
    line-height: 0.92;
    overflow-wrap: normal;
    text-align: left;
  }

  body.mobile-lite .mobile-business-card-degree {
    margin-top: 0.55rem;
    font-size: 0.9rem;
    overflow-wrap: anywhere;
    text-align: left;
  }

  body.mobile-lite .mobile-business-card-qr-shell {
    justify-self: end;
    width: calc(100% - 0.35rem);
    max-width: 9.95rem;
    margin-inline: auto 0;
    padding: 0.95rem;
  }

  body.mobile-lite .mobile-business-card-qr {
    max-width: 100%;
    padding: 0.82rem;
  }

  body.mobile-lite .tools-section {
    display: block;
    padding-top: 1.8rem;
  }

  body.mobile-lite .tool-grid {
    gap: 0.9rem;
  }

  body.mobile-lite .tool-panel {
    display: none;
    padding: 1rem;
  }

  body.mobile-lite .tool-panel.mobile-tool {
    display: block;
  }

  body.mobile-lite .tool-header h3 {
    font-size: 1.15rem;
  }

  body.mobile-lite .tool-controls {
    gap: 0.85rem;
    margin-top: 1rem;
  }

  body.mobile-lite .tool-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  body.mobile-lite .tool-actions > *:only-child {
    grid-column: 1 / -1;
  }

  body.mobile-lite .tool-actions .action,
  body.mobile-lite .tool-button {
    width: 100%;
    justify-content: center;
  }

  body.mobile-lite .tool-mode-bar {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  body.mobile-lite .tool-mode-option {
    min-height: 2.75rem;
  }

  body.mobile-lite .section,
  body.mobile-lite .contact-section {
    padding: 2.4rem 0 2.8rem;
  }

  body.mobile-lite .presence-section {
    padding-top: 1.8rem;
  }

  body.mobile-lite .contact-actions,
  body.mobile-lite .presence-links {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
  }

  body.mobile-lite .contact-actions .action,
  body.mobile-lite .presence-link {
    width: 100%;
    justify-content: center;
  }

  body.mobile-lite .section-intro {
    margin-bottom: 1.5rem;
  }

  body.mobile-lite .contact-section {
    align-items: stretch;
  }

  body.mobile-lite .theme-toggle {
    align-self: stretch;
  }

  .writeup-filter-group,
  .writeup-tag-filters,
  .writeup-viewer-pagination {
    display: grid;
    grid-template-columns: 1fr;
  }

  .writeup-nav-button {
    justify-content: center;
    text-align: center;
  }

}

@media (max-width: 620px) {
  body.mobile-lite .mobile-business-card {
    grid-template-columns: minmax(0, 1fr) 8.95rem;
    align-items: start;
    gap: 0.9rem;
    width: 100%;
    min-height: 14.75rem;
    padding: 1.2rem 1.05rem;
  }

  body.mobile-lite .mobile-business-card-copy {
    padding-right: 0.12rem;
  }

  body.mobile-lite .mobile-business-card-qr-shell {
    justify-self: end;
    width: calc(100% - 0.2rem);
    max-width: 8.7rem;
    margin-inline: auto 0;
    padding: 0.82rem;
  }
}

@media (max-width: 400px) {
  body.mobile-lite .mobile-business-card {
    grid-template-columns: minmax(0, 1fr) 8.2rem;
    gap: 0.75rem;
    width: 100%;
    min-height: 13.9rem;
    padding: 1.05rem 0.95rem;
  }

  body.mobile-lite .mobile-business-card-title {
    font-size: clamp(1.44rem, 7vw, 1.72rem);
  }

  body.mobile-lite .mobile-business-card-degree {
    font-size: 0.8rem;
  }

  body.mobile-lite .mobile-business-card-qr-shell {
    max-width: 7.95rem;
    padding: 0.74rem;
  }
}

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

  .hero-copy,
  .radar-sweep,
  .radar-blip,
  .signal-panel-top,
  .signal-panel-bottom,
  [data-reveal] {
    animation: none !important;
    transition: none !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}