:root {
  --ink: #151a1d;
  --ink-soft: #2d373b;
  --muted: #68777d;
  --paper: #fbfaf6;
  --panel: #ffffff;
  --soft: #edf2ee;
  --line: #d7ded8;
  --dark: #101719;
  --dark-panel: #172225;
  --red: #cf4438;
  --green: #35a66a;
  --blue: #2486b8;
  --amber: #d99a22;
  --shadow: 0 20px 50px rgba(18, 32, 35, 0.11);
  --container: min(1500px, calc(100% - 48px));
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(21, 26, 29, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(21, 26, 29, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 36px 36px;
  font-family: "Aptos", "Segoe UI", ui-sans-serif, system-ui, sans-serif;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a {
  color: inherit;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: white;
  background: var(--dark);
  border-radius: var(--radius);
  transform: translateY(-150%);
}

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

.container {
  width: var(--container);
  margin-inline: auto;
}

.section {
  position: relative;
  padding: 104px 0;
}

.section-first {
  padding-top: 90px;
}

.section-muted {
  background: rgba(237, 242, 238, 0.82);
  border-block: 1px solid var(--line);
}

.section-dark {
  color: white;
  background:
    linear-gradient(135deg, rgba(53, 166, 106, 0.13), transparent 34%),
    linear-gradient(90deg, var(--dark), #172225 55%, #202415);
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  width: 100%;
  border-bottom: 1px solid transparent;
  transition: background-color 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(251, 250, 246, 0.93);
  border-color: rgba(215, 222, 216, 0.92);
  box-shadow: 0 10px 34px rgba(23, 34, 37, 0.08);
  backdrop-filter: blur(16px);
}

.nav-wrap {
  width: var(--container);
  height: 72px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 850;
  text-decoration: none;
  letter-spacing: 0;
}

.brand > span:last-child {
  font-size: 1.02rem;
}

.brand-mark {
  width: 36px;
  height: 34px;
  display: grid;
  place-items: center;
  color: white;
  background:
    linear-gradient(90deg, var(--red) 0 25%, var(--green) 25% 50%, var(--blue) 50% 75%, var(--amber) 75% 100%);
  border: 1px solid rgba(16, 23, 25, 0.16);
  border-radius: 7px;
}

.site-nav {
  display: flex;
  gap: 28px;
}

.site-nav a {
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 720;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--red);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 9px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 100%;
  height: 2px;
  margin: 4px 0;
  background: var(--ink);
}

.hero {
  padding: 110px 0 72px;
  min-height: 88vh;
  display: grid;
  align-items: end;
  background:
    linear-gradient(90deg, rgba(207, 68, 56, 0.12) 0 1px, transparent 1px 24%),
    linear-gradient(90deg, rgba(53, 166, 106, 0.11) 0 1px, transparent 1px 49%),
    linear-gradient(90deg, rgba(36, 134, 184, 0.11) 0 1px, transparent 1px 74%),
    linear-gradient(180deg, #f6f8f7, var(--paper));
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(760px, 1.16fr) minmax(460px, 0.84fr);
  align-items: end;
  gap: 56px;
}

.status-line,
.section-index,
.card-label {
  margin: 0;
  color: var(--red);
  font-size: 0.75rem;
  font-weight: 850;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 1120px;
  margin: 18px 0 20px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 4.25rem;
  font-weight: 600;
  line-height: 1.03;
  letter-spacing: 0;
  overflow-wrap: break-word;
  text-wrap: normal;
}

.authors {
  max-width: 680px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.04rem;
}

.authors span,
.authors a {
  white-space: nowrap;
}

.authors a {
  color: var(--blue);
  font-weight: 760;
  text-decoration: none;
}

.authors a:hover {
  text-decoration: underline;
}

.affiliation {
  margin: 8px 0 26px;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  min-height: 42px;
  padding: 9px 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-weight: 820;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.button-primary {
  color: white;
  background: var(--dark);
  box-shadow: 0 12px 24px rgba(16, 23, 25, 0.22);
}

.button-secondary {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
}

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

.hero-figure {
  position: relative;
  margin: 0;
  padding: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-figure::before {
  content: "";
  position: absolute;
  inset: -1px -1px auto;
  height: 5px;
  background: linear-gradient(90deg, var(--red), var(--green), var(--blue), var(--amber));
  border-radius: var(--radius) var(--radius) 0 0;
}

.hero-figure img {
  width: 100%;
  max-height: 600px;
  object-fit: contain;
  background: #f7f9f8;
  border-radius: 5px;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 46px;
}

.split-heading {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(300px, 0.72fr);
  gap: 54px;
  align-items: end;
}

.section-heading h2,
.media-copy h2,
.citation-layout h2 {
  margin: 12px 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 3.25rem;
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: 0;
}

.section-heading p,
.media-copy p,
.citation-layout > div > p,
.heading-note {
  margin: 0;
  color: var(--muted);
  font-size: 1.04rem;
}

.split-heading > p {
  padding-bottom: 8px;
}

.section-dark .section-index,
.section-dark .card-label {
  color: #f1b24e;
}

.section-dark .section-heading p {
  color: #c8d6d7;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.metrics-grid article {
  min-height: 160px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 5px solid var(--green);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(23, 34, 37, 0.06);
}

.metrics-grid article:nth-child(1) {
  border-top-color: var(--red);
}

.metrics-grid article:nth-child(3) {
  border-top-color: var(--blue);
}

.metrics-grid article:nth-child(4) {
  border-top-color: var(--amber);
}

.metrics-grid strong {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2.7rem;
  font-weight: 600;
  line-height: 1;
}

.metrics-grid small {
  font-size: 0.46em;
}

.metrics-grid span {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 720;
}

.principles {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.principles article,
.result-card,
.demo-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.principles article {
  padding: 26px;
}

.principles span {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.principles h3,
.media-copy h2,
.fpga-strip h3,
.result-card h3,
.performance-panel h3,
.demo-card h3 {
  margin: 10px 0;
}

.principles p,
.fpga-strip p,
.result-card p,
.demo-card p {
  margin: 0;
  color: var(--muted);
}

.media-layout {
  display: grid;
  grid-template-columns: minmax(300px, 0.72fr) minmax(0, 1.28fr);
  gap: 56px;
  align-items: center;
}

.system-gallery {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(360px, 0.8fr);
  gap: 18px;
  align-items: stretch;
}

.system-gallery .paper-figure {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.system-gallery .paper-figure img {
  flex: 1;
}

.media-copy p + p {
  margin-top: 14px;
}

.paper-figure {
  margin: 0;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.paper-figure img {
  width: 100%;
  max-height: 540px;
  object-fit: contain;
  background: #f8faf8;
  border-radius: 5px;
}

.figure-wide img {
  max-height: 620px;
}

.paper-figure figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.86rem;
}

.method-steps {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.method-steps div {
  min-height: 92px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.method-steps span {
  color: var(--red);
  font-size: 0.76rem;
  font-weight: 850;
}

.method-steps strong {
  color: var(--ink);
  line-height: 1.2;
}

.method-feature-grid {
  margin-top: 42px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.method-feature {
  padding: 28px;
  display: grid;
  gap: 24px;
  align-content: space-between;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.method-feature h3 {
  margin: 10px 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.9rem;
  font-weight: 600;
  line-height: 1.15;
}

.method-feature p {
  margin: 0;
  color: var(--muted);
}

.method-feature-dark {
  color: white;
  background:
    linear-gradient(90deg, rgba(207, 68, 56, 0.13), transparent 32%),
    linear-gradient(135deg, var(--dark), #1e2f33);
  border-color: rgba(255, 255, 255, 0.08);
}

.method-feature-dark .section-index {
  color: #f1b24e;
}

.method-feature-dark p {
  color: #c9d5d4;
}

.fpga-strip {
  margin-top: 42px;
  padding: 28px;
  display: grid;
  grid-template-columns: minmax(320px, 0.72fr) minmax(0, 1.28fr);
  gap: 28px;
  align-items: stretch;
  color: white;
  background:
    linear-gradient(90deg, rgba(207, 68, 56, 0.13), transparent 32%),
    linear-gradient(135deg, var(--dark), #1e2f33);
  border-radius: var(--radius);
}

.fpga-strip .section-index {
  color: #f1b24e;
}

.fpga-strip p {
  color: #c9d5d4;
}

.fpga-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.fpga-copy p + p {
  margin-top: 12px;
}

.fpga-figure {
  margin: 0;
  padding: 14px;
  width: 100%;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
}

.fpga-figure img {
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 5px;
}

.fpga-figure figcaption {
  margin-top: 10px;
  color: #435256;
  font-size: 0.84rem;
}

.result-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.result-card {
  overflow: hidden;
  color: var(--ink);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.16);
}

.result-wide {
  grid-column: 1 / -1;
}

.result-card figure {
  margin: 0;
  overflow: visible;
  background: #f7faf8;
  border-bottom: 1px solid var(--line);
}

.result-card img {
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
}

.result-wide figure {
  height: auto;
}

.result-wide img {
  object-position: center 52%;
}

.result-card > div {
  padding: 24px;
}

.result-card h3 {
  font-size: 1.2rem;
  line-height: 1.32;
}

.performance-panel {
  margin-top: 24px;
  padding: 30px;
  display: grid;
  grid-template-columns: minmax(220px, 0.5fr) minmax(0, 1fr);
  gap: 30px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
}

.performance-bars {
  display: grid;
  gap: 13px;
}

.bar-row {
  display: grid;
  grid-template-columns: 50px 1fr 74px;
  align-items: center;
  gap: 12px;
  font-size: 0.88rem;
  font-weight: 800;
}

.bar-row > div {
  height: 10px;
  overflow: hidden;
  background: #dce4df;
  border-radius: 999px;
}

.bar-row i {
  width: var(--bar);
  height: 100%;
  display: block;
  background: linear-gradient(90deg, var(--red), var(--green), var(--blue));
  border-radius: inherit;
}

.evidence-note {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 20px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

.demo-card video {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: black;
  border-radius: 5px;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.demo-card {
  overflow: hidden;
}

.demo-feature {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.55fr);
  align-items: center;
  background:
    linear-gradient(90deg, #ffffff, #f1f5f1);
  box-shadow: var(--shadow);
}

.demo-feature video {
  border-radius: 0;
}

.demo-card > div {
  padding: 20px;
}

.citation-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  gap: 52px;
  align-items: start;
}

.citation-layout > * {
  min-width: 0;
}

.citation-box {
  min-width: 0;
  padding: 18px;
  background: var(--dark);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.citation-box button {
  min-height: 38px;
  margin-bottom: 12px;
  padding: 8px 13px;
  color: white;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 800;
}

.citation-box button:hover,
.citation-box button:focus-visible {
  border-color: #f1b24e;
}

.citation-box pre {
  max-width: 100%;
  margin: 0;
  overflow-x: auto;
  color: #eaf1ee;
  font-size: 0.86rem;
  line-height: 1.45;
}

.citation-box code {
  font-family: "Cascadia Mono", "Consolas", monospace;
}

#copy-status {
  min-height: 1.2em;
  margin: 10px 0 0;
  color: #f1b24e;
  font-size: 0.82rem;
}

.resource-links {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.resource-links a {
  padding: 9px 13px;
  color: var(--ink);
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 0.86rem;
  font-weight: 800;
  text-decoration: none;
}

.resource-links a:hover,
.resource-links a:focus-visible {
  border-color: var(--blue);
  transform: translateY(-1px);
}

.site-footer {
  padding: 28px 0;
  color: #c0ccca;
  background: var(--dark);
  font-size: 0.84rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 22px;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: white;
  font-weight: 760;
  text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  text-decoration: underline;
}

@media (max-width: 1280px) {
  :root {
    --container: min(1180px, calc(100% - 40px));
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(400px, 0.95fr);
    gap: 48px;
  }

  .hero h1 {
    font-size: 4.1rem;
  }
}

@media (max-width: 980px) {
  .hero-grid,
  .split-heading,
  .media-layout,
  .system-gallery,
  .fpga-strip,
  .method-feature-grid,
  .performance-panel,
  .citation-layout {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    align-items: start;
  }

  .metrics-grid,
  .result-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .principles,
  .demo-grid {
    grid-template-columns: 1fr;
  }

  .demo-feature {
    grid-column: auto;
    grid-template-columns: 1fr;
  }

  .result-wide {
    grid-column: 1 / -1;
  }

  .hero h1 {
    font-size: 3.7rem;
  }

  .section-heading h2,
  .media-copy h2,
  .citation-layout h2 {
    font-size: 2.85rem;
  }
}

@media (max-width: 760px) {
  :root {
    --container: min(100% - 28px, 1180px);
  }

  .section {
    padding: 76px 0;
  }

  .site-header.is-scrolled,
  .site-header {
    background: rgba(251, 250, 246, 0.95);
    border-bottom-color: var(--line);
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 64px;
    left: 14px;
    right: 14px;
    padding: 10px;
    display: none;
    flex-direction: column;
    gap: 2px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 10px 11px;
  }

  .hero {
    min-height: auto;
    padding: 112px 0 58px;
  }

  .hero h1 {
    max-width: 100%;
    font-size: 2.2rem;
    line-height: 1.12;
    overflow-wrap: anywhere;
    hyphens: auto;
  }

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

  .metrics-grid,
  .method-steps,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .metrics-grid article {
    min-height: 128px;
  }

  .metrics-grid strong {
    font-size: 2.25rem;
  }

  .section-heading h2,
  .media-copy h2,
  .citation-layout h2 {
    font-size: 2.35rem;
  }

  .fpga-strip,
  .performance-panel {
    padding: 22px;
  }

  .result-card figure,
  .result-wide figure {
    height: auto;
  }

  .result-card img {
    height: auto;
    aspect-ratio: auto;
    object-fit: contain;
  }

  .bar-row {
    grid-template-columns: 42px 1fr 66px;
    gap: 8px;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 420px) {
  .hero h1 {
    max-width: 100%;
    font-size: 1.92rem;
    overflow-wrap: anywhere;
  }

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

}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}