:root {
  --meshflow-ink: #0f2433;
  --meshflow-muted: #526b7a;
  --meshflow-soft: #f2f9fc;
  --meshflow-panel: #ffffff;
  --meshflow-line: #cfe2ec;
  --meshflow-cyan: #0891b2;
  --meshflow-ocean: #036987;
  --meshflow-shadow: 0 16px 40px rgba(17, 24, 39, 0.07);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--meshflow-ink);
  background: #fff;
  font-family: "Noto Sans", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

body h1,
body h2,
body h3,
body p {
  letter-spacing: 0;
}

a {
  color: var(--meshflow-ocean);
  text-decoration: none;
}

a:hover {
  color: #075985;
  text-decoration: underline;
}

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

button {
  font: inherit;
}

sup {
  position: relative;
  top: -0.45em;
  font-size: 66%;
  line-height: 0;
  vertical-align: baseline;
}

.meshflow-page-wrap {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.meshflow-narrow {
  width: min(920px, calc(100% - 40px));
}

.meshflow-side-nav {
  position: fixed;
  top: 50%;
  right: clamp(0.35rem, 1.2vw, 1rem);
  z-index: 30;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.4rem;
  padding: 0.45rem;
  border: 1px solid rgba(203, 213, 225, 0.85);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 16px 38px rgba(7, 89, 133, 0.14);
  backdrop-filter: blur(14px);
  transform: translateY(-50%);
}

.meshflow-side-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.2rem;
  min-height: 2.2rem;
  padding: 0.55rem 0.75rem;
  border-radius: 999px;
  color: #475569;
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.meshflow-side-nav a:first-child {
  color: #0f8fb3;
  font-size: 0.95rem;
}

.meshflow-side-nav a:hover {
  background: #e7f8fb;
  color: #075985;
  transform: translateY(-1px);
}

.meshflow-hero {
  padding: clamp(2.2rem, 5vw, 4.5rem) 0 clamp(2.5rem, 5vw, 4.25rem);
  border-bottom: 1px solid var(--meshflow-line);
  background:
    radial-gradient(circle at 50% 0%, rgba(125, 211, 252, 0.18), transparent 34rem),
    linear-gradient(180deg, #f5fbfe 0%, #ffffff 72%);
}

.meshflow-hero-inner,
.meshflow-section-head,
.meshflow-method-intro {
  text-align: center;
}

.meshflow-venue-hero {
  margin: 0 0 1.1rem;
}

.meshflow-venue-badge {
  display: inline-flex;
  padding: 0.38rem 0.86rem;
  border: 1px solid #f2c75c;
  border-radius: 999px;
  background: linear-gradient(180deg, #fff8d8 0%, #ffe89a 100%);
  box-shadow: 0 4px 14px rgba(199, 143, 17, 0.13);
  color: #8a5b08;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.meshflow-title-block {
  max-width: 960px;
  margin: 0 auto 1rem;
  padding: 0;
}

.meshflow-h1 {
  width: 100%;
  max-width: 100%;
  margin: 0;
  color: var(--meshflow-ink);
  font-family: Ubuntu, Helvetica, sans-serif;
  font-weight: 650;
  line-height: 1.08;
}

.meshflow-title-line {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.meshflow-title-line-1 {
  font-size: clamp(2.05rem, 4.85vw, 3.85rem);
  font-weight: 650;
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.meshflow-title-line-2 {
  max-width: 900px;
  margin-top: 0.42rem;
  color: #303846;
  font-size: clamp(1.18rem, 2.25vw, 1.72rem);
  font-weight: 560;
  line-height: 1.22;
  overflow-wrap: anywhere;
}

.meshflow-title-punct,
.meshflow-title-continuation {
  color: var(--meshflow-ink);
  font-weight: 650;
}

.meshflow-nowrap {
  white-space: nowrap;
}

.meshflow-brand-word {
  display: inline-flex;
  align-items: baseline;
  font-weight: 700;
  letter-spacing: 0;
  white-space: nowrap;
}

.meshflow-brand-letter {
  display: inline-block;
  background-image: linear-gradient(
    100deg,
    #042f4b 0%,
    #075985 14%,
    #0284c7 28%,
    #06b6d4 42%,
    #67e8f9 52%,
    #f0fdff 58%,
    #38bdf8 66%,
    #0e7490 82%,
    #083344 100%
  );
  background-size: 260% 100%;
  background-position: 0% 50%;
  background-attachment: fixed;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  animation: meshflow-brand-flow 5.5s ease-in-out infinite alternate,
    meshflow-letter-wave 2.35s ease-in-out infinite;
  animation-delay: 0s, calc(var(--m-i, 0) * 0.065s);
}

@keyframes meshflow-brand-flow {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

@keyframes meshflow-letter-wave {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-0.12em); }
}

@media (prefers-reduced-motion: reduce) {
  .meshflow-brand-letter {
    animation: none;
    transform: none;
    background: none;
    color: #0369a1;
    -webkit-text-fill-color: unset;
  }
}

.meshflow-lead {
  max-width: 720px;
  margin: 0.9rem auto 0;
  color: var(--meshflow-muted);
  font-size: clamp(0.98rem, 1.55vw, 1.1rem);
  font-weight: 450;
  line-height: 1.5;
}

.meshflow-lead-highlight {
  color: var(--meshflow-ocean);
  font-weight: 800;
}

.meshflow-hero-meta {
  max-width: 980px;
  margin: 1.18rem auto 0;
  color: #254456;
  font-size: clamp(1.02rem, 1.28vw, 1.14rem);
  font-weight: 500;
  line-height: 1.58;
}

.meshflow-authors {
  margin-bottom: 0.55rem;
  overflow-wrap: anywhere;
}

.meshflow-authors-corresponding {
  display: inline-block;
  white-space: nowrap;
}

.nerf_authors_v2 {
  color: #036987;
  font-weight: 750;
}

.meshflow-affiliations,
.nerf_affiliation_v2 {
  display: inline;
  margin: 0;
  color: #526b7a;
  font: inherit;
  font-size: clamp(0.98rem, 1.12vw, 1.06rem);
  font-weight: 550;
}

.meshflow-affil-pair,
.meshflow-meta-wordmark {
  display: inline-flex;
  align-items: baseline;
}

.meshflow-affil-pair {
  gap: 0.22em;
}

.meshflow-affil-logo--hkust {
  width: auto;
  height: 1.05em;
  margin: 0;
  object-fit: contain;
  vertical-align: -0.12em;
}

.meshflow-meta-wordmark {
  gap: 0.28em;
  color: #526b7a;
  font-weight: inherit;
}

.meshflow-meta-wordmark i {
  color: #0668e1;
  font-size: 0.95em;
  line-height: 1;
}

.external-link,
.meshflow-external-links {
  display: flex;
  justify-content: center;
  margin-top: 1.25rem;
  padding: 0;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.55rem;
  padding: 0.55rem 0.95rem;
  border: 1px solid #cfd6df;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 4px 12px rgba(17, 24, 39, 0.05);
  color: #172033;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.btn:hover,
.btn:focus-visible {
  border-color: #075985;
  background: #075985;
  color: #fff;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(7, 89, 133, 0.18);
}

.btn:focus-visible {
  outline: 3px solid rgba(14, 165, 233, 0.26);
  outline-offset: 3px;
}

.meshflow-btn-disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.55;
  pointer-events: none;
}

.meshflow-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  max-width: 900px;
  margin: clamp(1.8rem, 4vw, 2.8rem) auto 0;
}

.meshflow-stat,
.meshflow-idea-card {
  border: 1px solid var(--meshflow-line);
  border-radius: 8px;
  background: var(--meshflow-panel);
  box-shadow: 0 10px 28px rgba(17, 24, 39, 0.055);
}

.meshflow-stat {
  padding: 1.05rem 1rem;
  text-align: left;
}

.meshflow-stat strong {
  display: block;
  color: #172033;
  font-family: Ubuntu, Helvetica, sans-serif;
  font-size: clamp(1.35rem, 2.8vw, 1.85rem);
  line-height: 1.1;
}

.meshflow-stat span {
  display: block;
  margin-top: 0.4rem;
  color: var(--meshflow-muted);
  font-size: 0.9rem;
  line-height: 1.35;
}

.meshflow-hero-media {
  max-width: 960px;
  margin: clamp(0.35rem, 1.2vw, 0.75rem) auto clamp(-0.85rem, -1.35vw, -0.35rem);
}

.meshflow-video-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: visible;
  background: transparent;
  text-align: center;
}

.meshflow-video-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.meshflow-video-caption {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  width: 100%;
  margin: 0 auto 0.28rem;
  padding: 0 clamp(0.2rem, 2vw, 1rem);
  gap: clamp(0.8rem, 5vw, 3rem);
}

.meshflow-video-caption span {
  justify-self: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: min(100%, 10.5rem);
  padding: 0.34rem 0.9rem;
  border: 1px solid rgba(14, 165, 233, 0.5);
  border-radius: 999px;
  background: linear-gradient(180deg, #f1fbff 0%, #e6f7ff 100%);
  color: #036987;
  font-size: 0.86rem;
  font-weight: 800;
  line-height: 1.2;
  box-shadow: 0 8px 18px rgba(7, 89, 133, 0.08);
}

.meshflow-video-frame video {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  mix-blend-mode: multiply;
  transform-origin: center center;
}

.meshflow-section {
  padding: clamp(2.8rem, 6vw, 4.5rem) 0;
}

.meshflow-section-muted {
  border-top: 1px solid var(--meshflow-line);
  border-bottom: 1px solid var(--meshflow-line);
  background: var(--meshflow-soft);
}

.meshflow-eyebrow {
  margin: 0 0 0.55rem;
  color: var(--meshflow-ocean);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  line-height: 1.2;
  text-transform: uppercase;
}

.grey-heading_nerf {
  margin: 0 auto 1rem;
  color: var(--meshflow-ink);
  font-family: Ubuntu, Helvetica, sans-serif;
  font-size: clamp(1.75rem, 3.3vw, 2.55rem);
  font-weight: 700;
  line-height: 1.14;
  text-align: center;
}

.paragraph-3.nerf_text {
  max-width: 900px;
  margin: 0 auto;
  padding: 0;
  color: #3f4755;
  font-size: 1.02rem;
  font-weight: 430;
  line-height: 1.78;
  text-align: left;
}

.meshflow-abstract-text {
  text-align: center !important;
}

.meshflow-idea-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.6rem;
}

.meshflow-idea-card {
  padding: 1.15rem;
  text-align: left;
}

.meshflow-idea-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin-bottom: 0.8rem;
  border-radius: 8px;
  background: #e0f7ff;
  color: #075985;
}

.meshflow-idea-card:nth-child(2) .meshflow-idea-icon {
  background: #eafaff;
  color: #0284c7;
}

.meshflow-idea-card:nth-child(3) .meshflow-idea-icon {
  background: #eef7ff;
  color: #0369a1;
}

.meshflow-idea-card h3 {
  margin: 0 0 0.45rem;
  color: #172033;
  font-family: Ubuntu, Helvetica, sans-serif;
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.25;
}

.meshflow-idea-card p {
  margin: 0;
  color: var(--meshflow-muted);
  font-size: 0.93rem;
  font-weight: 430;
  line-height: 1.55;
}

.meshflow-teaser-figure {
  overflow: hidden;
  margin: 1.35rem auto 0;
  border: 1px solid var(--meshflow-line);
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--meshflow-shadow);
}

.meshflow-teaser-figure img {
  display: block;
  width: 100%;
  height: auto;
  margin: 0;
}

.meshflow-method-intro {
  max-width: 920px;
  margin: 0 auto;
}

.meshflow-method-scroller {
  display: flex;
  gap: 1rem;
  margin-top: 1.6rem;
  padding: 0.15rem 0 1rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-color: #93c5d8 #e8f6fb;
}

.meshflow-method-card {
  flex: 0 0 min(86vw, 860px);
  display: grid;
  grid-template-columns: minmax(260px, 0.36fr) minmax(0, 0.64fr);
  gap: 1rem;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--meshflow-line);
  border-radius: 10px;
  background: #fff;
  box-shadow: var(--meshflow-shadow);
  scroll-snap-align: start;
}

.meshflow-method-card-copy {
  padding: 1.25rem 0 1.25rem 1.25rem;
  text-align: left;
}

.meshflow-method-card-copy span {
  display: inline-block;
  margin-bottom: 0.45rem;
  color: var(--meshflow-ocean);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.meshflow-method-card-copy h3 {
  margin: 0 0 0.6rem;
  max-width: 15.5rem;
  color: var(--meshflow-ink);
  font-family: Ubuntu, Helvetica, sans-serif;
  font-size: clamp(1.15rem, 2vw, 1.55rem);
  font-weight: 750;
  line-height: 1.18;
}

.meshflow-method-card-copy p {
  margin: 0;
  max-width: 15.5rem;
  color: var(--meshflow-muted);
  font-size: 0.94rem;
  line-height: 1.58;
}

.meshflow-method-image {
  display: block;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  border-left: 1px solid var(--meshflow-line);
  background: #fff;
  cursor: zoom-in;
}

.meshflow-method-image img {
  display: block;
  width: 100%;
  height: auto;
  margin: 0;
  transition: transform 0.18s ease, filter 0.18s ease;
}

.meshflow-method-image:hover img,
.meshflow-method-image:focus-visible img {
  filter: saturate(1.04);
  transform: scale(1.01);
}

.meshflow-method-image:focus-visible {
  outline: 3px solid rgba(14, 165, 233, 0.35);
  outline-offset: -3px;
}

.meshflow-lightbox {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: none;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 4vw, 3rem);
  background: rgba(8, 22, 34, 0.72);
  backdrop-filter: blur(10px);
}

.meshflow-lightbox.is-open {
  display: flex;
}

.meshflow-lightbox img {
  display: block;
  max-width: min(96vw, 1280px);
  max-height: 88vh;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
}

.meshflow-lightbox-close {
  position: fixed;
  top: clamp(0.8rem, 2vw, 1.3rem);
  right: clamp(0.8rem, 2vw, 1.3rem);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: #075985;
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
}

.meshflow-highlights-block.nerf_results_text {
  max-width: 930px;
  margin: 1.35rem auto 0;
  padding: 0;
}

.meshflow-highlights-dots {
  display: grid;
  gap: 0.85rem;
}

.meshflow-highlight-item {
  position: relative;
  margin: 0;
  padding: 1rem 1rem 1rem 2.35rem !important;
  border: 1px solid var(--meshflow-line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 8px 20px rgba(17, 24, 39, 0.045);
}

.meshflow-highlight-item::before {
  position: absolute;
  left: 1rem;
  top: 1.55rem;
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: var(--meshflow-cyan);
}

.meshflow-ack-text {
  text-align: left !important;
}

.meshflow-bibtex-heading {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.65rem;
}

.meshflow-bibtex-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.72rem;
  height: 1.72rem;
  border: 1px solid var(--meshflow-line);
  border-radius: 999px;
  background: #f1f5f9;
  color: #075985;
  font-size: 0.78rem;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.meshflow-bibtex-copy:hover {
  border-color: #9bd3e8;
  background: #e8f7fb;
  transform: translateY(-1px);
}

.meshflow-bibtex-wrap .bibtex {
  margin-top: 1rem;
  border: 1px solid var(--meshflow-line);
  border-radius: 8px;
  background: #f8fcfe;
  color: #1e3a4a;
  box-shadow: var(--meshflow-shadow);
  text-align: left;
  overflow-x: auto;
}

.meshflow-bibtex-wrap .bibtex pre {
  margin: 0;
  padding: 1.1rem;
  font: 0.92rem/1.55 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  white-space: pre;
}

.meshflow-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 2rem max(2rem, calc((100vw - 1120px) / 2));
  background: #111827;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(0.82rem, 1.05vw, 0.95rem);
  line-height: 1.5;
  text-align: left;
}

.meshflow-footer nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  flex-shrink: 0;
}

.meshflow-footer a {
  color: #fff;
  font-weight: 800;
}

.meshflow-footer a:hover {
  color: #7dd3fc;
  text-decoration: none;
}

.meshflow-footer a[aria-disabled="true"] {
  opacity: 0.72;
  pointer-events: none;
}

@media (max-width: 1180px) {
  .meshflow-side-nav {
    display: none;
  }
}

@media (max-width: 900px) {
  .meshflow-hero-stats,
  .meshflow-idea-grid {
    grid-template-columns: 1fr;
  }

  .meshflow-method-card {
    flex-basis: min(88vw, 720px);
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .meshflow-method-card-copy {
    padding: 1.15rem;
  }

  .meshflow-method-card-copy h3,
  .meshflow-method-card-copy p {
    max-width: none;
  }

  .meshflow-method-image {
    border-left: none;
    border-top: 1px solid var(--meshflow-line);
  }

  .meshflow-footer {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.6rem 1.25rem;
  }
}

@media (max-width: 640px) {
  .meshflow-page-wrap,
  .meshflow-narrow {
    width: min(100% - 24px, 1120px);
  }

  .meshflow-title-line-1 {
    display: block;
    width: 100%;
    font-size: clamp(1.95rem, 8.8vw, 2.8rem);
  }

  .meshflow-title-continuation {
    display: block;
    width: min(100%, 310px);
    margin: 0.2rem auto 0;
    font-size: 0.54em;
    line-height: 1.16;
    overflow-wrap: normal;
  }

  .meshflow-title-line-2 {
    width: min(100%, 300px);
    max-width: 300px;
    font-size: 1.06rem;
    line-height: 1.22;
  }

  .meshflow-lead {
    max-width: 300px;
    font-size: 0.94rem;
  }

  .meshflow-authors,
  .meshflow-hero-meta {
    font-size: 0.95rem;
    line-height: 1.6;
  }

  .meshflow-affiliations,
  .nerf_affiliation_v2 {
    font-size: 0.94rem;
  }

  .meshflow-authors {
    max-width: 310px;
    margin-left: auto;
    margin-right: auto;
  }

  .meshflow-external-links {
    max-width: 320px;
  }

  .meshflow-external-links .btn[aria-disabled="true"]:not(.meshflow-btn-disabled) {
    display: none;
  }

  .meshflow-hero {
    padding-top: 1.8rem;
  }

  .meshflow-external-links .btn {
    min-height: 2.35rem;
    padding: 0.5rem 0.78rem;
    font-size: 0.84rem;
  }

  .paragraph-3.nerf_text {
    font-size: 0.96rem;
    line-height: 1.68;
  }
}