* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

:root {
  --bg: #f6f8fc;
  --bg-soft: #eef4ff;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: #ffffff;
  --text: #0f172a;
  --muted: #5b6475;
  --line: #e5eaf3;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-soft: #eff6ff;
  --shadow: 0 10px 35px rgba(15, 23, 42, 0.08);
  --shadow-strong: 0 18px 45px rgba(15, 23, 42, 0.12);
  --radius: 24px;
}

body {
  margin: 0;
  font-family: "Inter", Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, #eef4ff 0, transparent 34%),
    radial-gradient(circle at top right, #f4f7ff 0, transparent 30%),
    linear-gradient(180deg, #f8fbff 0%, #f5f7fb 100%);
  line-height: 1.65;
}

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

.page {
  max-width: 1180px;
  margin: 0 auto;
  padding: 42px 20px 70px;
}

/* Hero */
.hero {
  margin-bottom: 8px;
}

.hero-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.82));
  border: 1px solid rgba(226, 232, 240, 0.85);
  border-radius: 30px;
  padding: 40px 36px 34px;
  text-align: center;
  box-shadow: var(--shadow-strong);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.hero h1 {
  margin: 0;
  font-size: 52px;
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
}

.authors {
  margin-top: 22px;
  font-size: 18px;
  color: #1f2937;
}

.authors span {
  display: inline-block;
  margin: 0 10px 8px;
}

.affiliations {
  margin-top: 8px;
  margin-bottom: 0;
  font-size: 16px;
  color: #64748b;
}

.button-row {
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 8px 8px 0;
  padding: 12px 18px;
  min-height: 46px;
  border-radius: 999px;
  border: 1px solid #d7dfea;
  background: rgba(255, 255, 255, 0.92);
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.05);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.button.primary {
  color: #ffffff;
  border-color: transparent;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
}
.text-blue-button {
  background: transparent !important;
  color: #2563eb !important;
  border: 1px solid #cbd5e1 !important;
  box-shadow: none !important;
}

.text-blue-button:hover {
  background: transparent !important;
  color: #1d4ed8 !important;
  border: 1px solid #94a3b8 !important;
  box-shadow: none !important;
  transform: none !important;
}
.secondary-blue {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
}

/* Section */
.section {
  margin-top: 46px;
}

.section h2 {
  margin: 0 0 18px;
  text-align: center;
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
}

/* Generic cards */
.card,
.figure-card,
.metric-card {
  background: var(--surface);
  border: 1px solid rgba(226, 232, 240, 0.85);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.card {
  border-radius: var(--radius);
  padding: 24px;
}

.figure-card {
  border-radius: 28px;
  padding: 18px;
}

.caption {
  margin: 14px auto 0;
  max-width: 920px;
  text-align: center;
  font-size: 15px;
  color: var(--muted);
}

/* Demo */
.demo-video {
  width: 100%;
  display: block;
  border-radius: 18px;
  background: #0b1220;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04);
}

/* Metrics */
.metrics-strip {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

/* .metric-card {
  border-radius: 22px;
  padding: 22px 16px;
  text-align: center;
}

.metric-value {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--text);
}

.metric-label {
  margin-top: 8px;
  font-size: 14px;
  color: var(--muted);
} */

.metric-card {
  border-radius: 22px;
  padding: 22px 16px;
  text-align: center;
  background: linear-gradient(180deg, #edf4ff, #eaf1ff);
  border: 1px solid #d7e4ff;
  box-shadow: var(--shadow);
}

.metric-value {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--text);
}

.metric-label {
  margin-top: 8px;
  font-size: 14px;
  color: #334155;
}

/* Figure */
.main-figure {
  width: 100%;
  display: block;
  border-radius: 18px;
}

/* Grid */
.grid {
  display: grid;
  gap: 22px;
}

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

.feature-card {
  height: 100%;
}

.feature-card h3 {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}

.feature-card p {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
}

/* Table */
.table-card {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  border-radius: 16px;
  overflow: hidden;
}

thead th {
  padding: 13px 10px;
  text-align: center;
  font-weight: 700;
  color: var(--text);
  background: linear-gradient(180deg, #edf4ff, #eaf1ff);
  border-bottom: 1px solid #d7e4ff;
}

tbody td {
  padding: 13px 10px;
  text-align: center;
  color: #334155;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.72);
}

tbody tr:last-child td {
  border-bottom: none;
}

.highlight-row td {
  font-weight: 800;
  color: var(--text);
  background: #f3f7ff;
}

.table-note {
  margin-top: 14px;
  margin-bottom: 0;
  font-size: 15px;
  color: var(--muted);
}

.metric-explain {
  margin-top: 16px;
  color: #334155;
}

.metric-explain p {
  margin: 0 0 8px;
}

.metric-explain ul {
  margin: 0;
  padding-left: 20px;
}

.metric-explain li {
  margin-bottom: 8px;
}

.metric-explain li:last-child {
  margin-bottom: 0;
}

/* BibTeX */
.bib-card p {
  margin-top: 0;
  margin-bottom: 14px;
  color: #334155;
}

pre {
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
  border-radius: 14px;
  background: #f8fafc;
  color: #334155;
  font-size: 14px;
  line-height: 1.55;
  border: 1px solid #e5eaf3;
  box-shadow: none;
}

code {
  font-family: Consolas, Monaco, "Courier New", monospace;
}

/* Footer */
.footer {
  margin-top: 48px;
  text-align: center;
  color: #7a8599;
  font-size: 14px;
}

/* Responsive */
@media (max-width: 1024px) {
  .metrics-strip {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 720px) {
  .page {
    padding: 28px 14px 52px;
  }

  .hero-card {
    padding: 28px 18px 24px;
    border-radius: 24px;
  }

  .hero h1 {
    font-size: 36px;
  }

  .authors {
    font-size: 16px;
  }

  .affiliations {
    font-size: 15px;
  }

  .section h2 {
    font-size: 26px;
  }

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

  .metric-value {
    font-size: 28px;
  }

  .button {
    width: 100%;
    max-width: 360px;
  }

  .card {
    padding: 18px;
  }

  .figure-card {
    padding: 12px;
    border-radius: 22px;
  }

  .main-figure,
  .demo-video {
    border-radius: 14px;
  }
}