:root {
  --page-bg: #ffffff;
  --section-bg: #fafafa;
  --section-alt: #f4f6f8;
  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --text: #1f2937;
  --muted: #4b5563;
  --muted-soft: #6b7280;
  --accent: #3273dc;
  --accent-2: #276cda;
  --shadow: 0 10px 30px rgba(17, 24, 39, 0.08);
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --max-width: 1180px;
}

html {
  scroll-behavior: smooth;
  background: var(--page-bg);
}

body {
  font-family: "Noto Sans", "Inter", sans-serif;
  color: var(--text);
  background: var(--page-bg);
}

a {
  color: var(--accent);
}

a:hover {
  color: var(--accent-2);
}

.section {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.section-tight {
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
}

.container.is-max-desktop {
  max-width: var(--max-width) !important;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(17, 24, 39, 0.08);
}

.navbar .navbar-item,
.navbar .navbar-link {
  color: var(--text);
}

.navbar .navbar-item:hover,
.navbar .navbar-link:hover {
  background: rgba(50, 115, 220, 0.06);
  color: var(--accent);
}

.navbar-menu {
  background: transparent;
}

.navbar-dropdown {
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.navbar-dropdown .navbar-item {
  color: var(--text);
}

.navbar-burger {
  color: var(--text);
}

.coda-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: "Google Sans", "Noto Sans", sans-serif;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 0.7rem;
  color: #fff;
  background: linear-gradient(135deg, #3273dc, #5da9ff);
  overflow: hidden;
}

.brand-mark svg {
  width: 100%;
  height: 100%;
}

.hero.coda-hero {
  padding-top: 4.5rem;
  padding-bottom: 2.5rem;
}

.title-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.coda-mark {
  display: inline-grid;
  place-items: center;
  width: 2.45rem;
  height: 2.45rem;
  color: var(--accent);
  flex: 0 0 auto;
}

.coda-mark svg {
  width: 100%;
  height: 100%;
}

.hero-copy .title {
  font-family: "Google Sans", "Noto Sans", sans-serif;
  font-size: clamp(2.2rem, 5.vw, 3.6rem);
  line-height: 1.02;
  color: var(--text);
  margin-top: 0.2rem;
  margin-bottom: 0.35rem;
  letter-spacing: -0.03em;
}

.hero-copy .subtitle {
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.55;
  font-weight: 500;
  margin-bottom: 1rem;
}

.hero-copy .content {
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.8;
}

.publication-authors {
  margin-top: 1.15rem;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.8;
}

.publication-authors a {
  color: var(--accent) !important;
  border-bottom: 1px solid rgba(50, 115, 220, 0.25);
}

.publication-authors a:hover {
  border-bottom-color: var(--accent);
}

.author-block {
  display: inline-block;
}

.hero-meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.5rem;
  padding-top: 0.15rem;
}

.link-block a,
.button.is-ghost,
.button.is-dark,
.button.is-light {
  margin: 0;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button.is-ghost {
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border-strong);
  box-shadow: 0 1px 2px rgba(17, 24, 39, 0.04);
}

.button.is-ghost:hover,
.button.is-dark:hover,
.button.is-light:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(17, 24, 39, 0.08);
}

.button.is-ghost .icon,
.button.is-dark .icon,
.button.is-light .icon {
  margin-right: 0.15rem;
}

.button .icon svg,
.panel-chip svg {
  display: block;
  width: 1em;
  height: 1em;
}

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

.metric-card {
  padding: 1rem 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: 0 1px 2px rgba(17, 24, 39, 0.04);
}

.metric-card .metric-value {
  display: block;
  color: var(--text);
  font-family: "Google Sans", "Noto Sans", sans-serif;
  font-size: 1.35rem;
  line-height: 1.1;
  margin-bottom: 0.3rem;
}

.metric-card .metric-label {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.coda-panel,
.article-card,
.method-card,
.result-card,
.bibtex-box {
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: var(--shadow);
}

.surface,
.surface-strong {
  background: #fff;
}

.coda-panel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: 1.4rem;
}

.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.2rem;
  color: var(--muted-soft);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

.panel-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.32rem 0.7rem;
  border-radius: 999px;
  background: #f8fafc;
  color: var(--muted);
  border: 1px solid var(--border);
  font-size: 0.84rem;
  white-space: nowrap;
}

.panel-chip svg {
  flex: 0 0 auto;
}

.compute-stack {
  display: grid;
  gap: 0.95rem;
}

.compute-row {
  display: grid;
  grid-template-columns: 1fr 2.1fr auto;
  align-items: center;
  gap: 0.9rem;
}

.compute-row__label {
  font-weight: 700;
  color: var(--text);
}

.compute-row__meta {
  color: var(--muted-soft);
  font-size: 0.92rem;
  text-align: right;
}

.compute-meter {
  position: relative;
  height: 0.95rem;
  border-radius: 999px;
  background: #f3f4f6;
  overflow: hidden;
  border: 1px solid #e5e7eb;
}

.compute-meter > span {
  position: absolute;
  inset: 0 auto 0 0;
  display: block;
  border-radius: inherit;
}

.compute-row.easy .compute-meter > span {
  width: 28%;
  background: linear-gradient(90deg, #dbeafe, #93c5fd);
}

.compute-row.medium .compute-meter > span {
  width: 58%;
  background: linear-gradient(90deg, #bfdbfe, #60a5fa);
}

.compute-row.hard .compute-meter > span {
  width: 86%;
  background: linear-gradient(90deg, #93c5fd, #3b82f6);
}

.hero-footnote {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

.panel-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.1rem;
}

.panel-metric {
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #f9fafb;
}

.panel-metric__label {
  display: block;
  color: var(--muted-soft);
  font-size: 0.82rem;
  margin-bottom: 0.2rem;
}

.panel-metric__value {
  display: block;
  color: var(--text);
  font-weight: 700;
}

.section-kicker {
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-title {
  font-family: "Google Sans", "Noto Sans", sans-serif;
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  color: var(--text);
  line-height: 1.15;
  margin-bottom: 0.8rem;
  letter-spacing: -0.02em;
}

.section-description {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.article-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
}

.article-card {
  padding: 1.2rem 1.25rem;
  border-radius: var(--radius-md);
}

.article-card h3,
.method-card h3,
.result-card h3 {
  color: var(--text);
  font-size: 1.08rem;
  margin-bottom: 0.7rem;
}

.article-card p,
.article-card li,
.method-card p,
.result-card p {
  color: var(--muted);
  line-height: 1.75;
}

.article-card ul {
  margin-left: 1rem;
}

.section-description-compact {
  margin-top: 0.9rem;
  max-width: 54rem;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.method-card {
  padding: 1.15rem;
  border-radius: var(--radius-md);
  min-height: 100%;
}

.method-card .step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin-bottom: 0.9rem;
  border-radius: 999px;
  color: #fff;
  font-weight: 700;
  background: linear-gradient(135deg, #3273dc, #5da9ff);
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
}

.result-card {
  padding: 1.2rem 1.25rem;
  border-radius: var(--radius-md);
}

.paper-figure {
  margin: 0;
  padding: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow);
}

.paper-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: calc(var(--radius-lg) - 8px);
}

.paper-figure figcaption {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.bibtex-box {
  border-radius: var(--radius-lg);
  padding: 1.15rem;
}

.bibtex-box pre {
  margin: 0;
  background: transparent;
  color: var(--text);
  font-size: 0.92rem;
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre-wrap;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 500ms ease, transform 500ms ease;
}

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

@media screen and (max-width: 1023px) {
  .navbar-menu {
    background: #fff;
    border-top: 1px solid var(--border);
  }

  .article-grid,
  .method-grid,
  .results-grid,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .compute-row {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .compute-row__meta {
    text-align: left;
  }

  .panel-metrics {
    grid-template-columns: 1fr;
  }

  .hero-meta {
    flex-direction: column;
  }

  .hero-actions {
    justify-content: flex-start;
  }

}

@media screen and (max-width: 768px) {
  .section {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }

  .hero.coda-hero {
    padding-top: 3.25rem;
  }

  .coda-panel,
  .article-card,
  .method-card,
  .result-card,
  .paper-figure,
  .metric-card,
  .bibtex-box {
    border-radius: 16px;
  }

  .buttons .button {
    width: 100%;
    justify-content: center;
  }
}