:root {
  --primary-color: #7b1e73;
  --primary-hover: #5b145b;
  --deep-purple: #311533;
  --purple-gray: #6f6475;
  --light-purple: #efe6f3;
  --soft-purple: #f7f2fa;
  --accent-color: #b678c3;
  --text-primary: #241626;
  --text-secondary: #66556c;
  --text-light: #94869b;
  --background-primary: #ffffff;
  --background-secondary: #faf7fc;
  --background-accent: #f1e8f5;
  --border-color: #dfd1e5;
  --shadow-sm: 0 1px 2px 0 rgb(49 21 51 / 0.06);
  --shadow-md: 0 6px 18px -8px rgb(49 21 51 / 0.26);
  --shadow-lg: 0 16px 34px -18px rgb(49 21 51 / 0.36);
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --transition: all 0.25s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-primary);
  line-height: 1.65;
  font-size: 16px;
  background: var(--background-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  color: var(--primary-hover);
}

.section {
  padding: 4rem 1.5rem;
}

.hero.is-light,
.footer {
  background: var(--background-secondary);
}

.bas-hero {
  background:
    radial-gradient(circle at top left, rgba(123, 30, 115, 0.13), transparent 34rem),
    linear-gradient(180deg, #ffffff 0%, #fbf8fc 100%);
  border-bottom: 1px solid var(--border-color);
}

.bas-hero .hero-body {
  padding: 4.5rem 1.5rem 3.75rem;
}

.publication-logo {
  width: min(640px, 86vw);
  height: auto;
  display: block;
  margin: 0 auto 1.75rem;
  border-radius: var(--border-radius);
  background: transparent;
}

.publication-title {
  max-width: 980px;
  margin: 0 auto 0.85rem;
  color: var(--deep-purple);
  font-size: 2.8rem !important;
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: 0;
}

.publication-title span {
  display: block;
}

.publication-title .title-acrostic {
  display: inline;
  color: var(--primary-color);
  text-shadow: 0 0 0 currentColor;
}

.publication-authors {
  color: var(--purple-gray);
  margin-bottom: 1.4rem;
}

.author-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
  max-width: 1050px;
  margin: 0 auto 0.75rem;
  font-size: 1.12rem;
  font-weight: 600;
  line-height: 1.5;
}

.author-block {
  white-space: nowrap;
}

.publication-authors sup {
  font-size: 0.68em;
  font-weight: 700;
}

.affiliation-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.3rem 1rem;
  max-width: 1100px;
  margin: 0 auto;
  font-size: 0.91rem;
  line-height: 1.45;
}

.affiliation-list span {
  white-space: normal;
}

.corresponding-author {
  margin-top: 0.55rem;
  font-size: 0.9rem;
}

.corresponding-author a {
  color: var(--primary-color);
  font-weight: 600;
}

.publication-links {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.button {
  border-radius: var(--border-radius) !important;
  font-weight: 700 !important;
  transition: var(--transition) !important;
  border: 1px solid transparent !important;
}

.button.is-dark {
  background: var(--deep-purple) !important;
  color: #ffffff !important;
  box-shadow: var(--shadow-sm);
}

.button.is-dark:hover {
  background: var(--primary-hover) !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.project-url {
  margin-top: 1rem;
  color: var(--text-secondary);
}

.title {
  color: var(--deep-purple);
  letter-spacing: 0;
}

.content p {
  color: var(--text-primary);
}

.content ul {
  margin-top: 1rem;
}

.content li {
  margin-bottom: 0.45rem;
}

.key-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.5rem;
}

.key-card,
.method-panel,
.result-card,
.gallery-item,
.bibtex-box {
  background: var(--background-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
}

.key-card {
  padding: 1rem;
  min-height: 142px;
}

.key-card strong {
  display: block;
  margin: 0.35rem 0 0.25rem;
  color: var(--primary-color);
  font-size: 1.7rem;
  line-height: 1.1;
}

.key-card span {
  color: var(--text-secondary);
  font-size: 0.93rem;
}

.key-label {
  display: inline-block;
  color: var(--deep-purple) !important;
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.78rem !important;
  letter-spacing: 0.04em;
}

.paper-figure {
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  background: #ffffff;
}

.figure-portrait {
  width: min(520px, 100%);
  margin: 1.4rem auto 0;
}

.figure-overview {
  width: min(680px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.figure-wide {
  width: min(940px, 100%);
  margin: 1.4rem auto 0;
}

.paper-media {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  margin: 0 auto;
}

.portrait-media {
  width: auto;
  max-height: 620px;
}

.overview-media {
  width: auto;
  max-height: 760px;
}

.wide-media {
  width: 100%;
  max-height: 430px;
}

.hf-caption {
  margin-top: 0.65rem;
  font-size: 0.94rem;
  color: var(--text-secondary);
  text-align: center;
}

.caption-wide {
  width: min(940px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.caption-text {
  width: 100%;
  margin-left: 0;
  margin-right: 0;
  text-align: left;
}

.method-panel,
.result-card {
  height: 100%;
  padding: 1.25rem;
}

.method-panel {
  background: linear-gradient(180deg, #ffffff 0%, var(--soft-purple) 100%);
}

.method-panel p,
.result-card p {
  color: var(--text-secondary);
}

.metric-table {
  margin-top: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  background: #ffffff;
  min-width: 760px;
}

.paper-table {
  width: 100%;
  overflow-x: auto;
  margin: 1.35rem 0;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
}

.paper-table caption {
  caption-side: top;
  padding: 0.8rem 1rem;
  color: var(--text-secondary);
  text-align: left;
  font-size: 0.94rem;
  line-height: 1.45;
  background: var(--background-primary);
  border: 1px solid var(--border-color);
  border-bottom: none;
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.paper-table .metric-table {
  margin-top: 0;
  border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
  box-shadow: none;
}

.metric-table th,
.metric-table td {
  vertical-align: middle;
  white-space: nowrap;
}

.metric-table td:first-child,
.metric-table th:first-child,
.metric-table td:nth-child(2),
.metric-table th:nth-child(2) {
  white-space: normal;
}

.metric-table th {
  background: var(--light-purple);
  color: var(--deep-purple);
  border-color: var(--border-color);
}

.metric-table td {
  border-color: var(--border-color);
}

.highlight-row {
  background: #f6ecf8;
}

.mid-row {
  background: #eadbf0;
}

.deep-row {
  background: #dcc2e4;
}

.group-row td {
  background: #eeeaf1;
  color: var(--deep-purple);
  font-weight: 700;
  font-style: italic;
}

.figure-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.gallery-item {
  overflow: hidden;
}

.gallery-item img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 430px;
  object-fit: contain;
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
}

.gallery-portrait img {
  max-height: 480px;
}

.gallery-wide {
  grid-column: span 2;
}

.gallery-wide img {
  max-height: 430px;
}

.gallery-item figcaption {
  padding: 0.85rem 1rem;
  color: var(--text-secondary);
  font-size: 0.94rem;
}

.composite-figure {
  padding-top: 1rem;
}

.subfigure-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding: 0 1rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.subfigure-panel img {
  border: 0;
  max-height: 260px;
}

.subfigure-panel p {
  margin: 0.45rem 0 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
  text-align: center;
}

.bibtex-box {
  padding: 1rem;
  background: #211324;
  overflow-x: auto;
}

.bibtex-box pre {
  margin: 0;
  background: transparent;
  color: #f5edf7;
  white-space: pre;
}

.footer {
  border-top: 1px solid var(--border-color);
  padding: 2rem 1.5rem;
  color: var(--text-secondary);
}

.scroll-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: var(--primary-color);
  color: #ffffff;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  z-index: 20;
}

.scroll-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.scroll-to-top:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

@media (max-width: 900px) {
  .key-grid,
  .figure-grid {
    grid-template-columns: 1fr;
  }

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

  .publication-title {
    font-size: 2rem !important;
  }

  .gallery-item img {
    height: auto;
    max-height: 300px;
  }
}

@media (max-width: 520px) {
  .section {
    padding: 3rem 1rem;
  }

  .bas-hero .hero-body {
    padding: 3rem 1rem 2.5rem;
  }

  .publication-logo {
    width: 100%;
  }

  .publication-links {
    align-items: stretch;
  }

  .publication-links .button {
    width: 100%;
  }
}