:root {
  --primary: #58d7ff;
  --bg: #0a1116;
  --bg2: #111922;
  --surface: rgba(18, 26, 33, 0.92);
  --surface2: rgba(24, 34, 44, 0.9);
  --border: rgba(151, 190, 181, 0.1);
  --text: #e9f0ec;
  --muted: #94a59f;
  --dim: #5a716b;
  --green: #7bf0be;
  --orange: #ffbc72;
  --purple: #b59cff;
  --teal: #58d7ff;
  --red: #ff8392;
  --nav-h: 64px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  --radius: 20px;
  --radius-sm: 14px;
}

body {
  background:
    radial-gradient(
      ellipse 60% 50% at 30% 20%,
      rgba(88, 215, 255, 0.05),
      transparent
    ),
    radial-gradient(
      ellipse 50% 40% at 70% 80%,
      rgba(123, 240, 190, 0.04),
      transparent
    ),
    linear-gradient(180deg, #081016 0%, #0b141c 50%, #081015 100%);
  color: var(--text);
  font-family: "Inter", system-ui, sans-serif;
  padding: calc(var(--nav-h) + 24px) 24px 48px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

/* Header */
header {
  text-align: center;
  padding: 40px 0 48px;
}

header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

header h1 span {
  color: var(--teal);
}

header p {
  color: var(--muted);
  margin-top: 10px;
  font-size: 1.05rem;
}

.badges {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 18px;
  flex-wrap: wrap;
}

.badge {
  background: var(--surface2);
  border: 1px solid #333;
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 0.82rem;
  color: var(--teal);
}

/* Section */
section {
  margin-bottom: 48px;
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

h2::before {
  content: "";
  display: block;
  width: 4px;
  height: 1.25em;
  background: var(--primary);
  border-radius: 2px;
}

/* Pipeline diagram */
.pipeline {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
  justify-content: center;
  padding: 24px;
  background: var(--surface);
  border-radius: 16px;
}

.pipe-step {
  background: var(--surface2);
  border: 1px solid #333;
  border-radius: 12px;
  padding: 14px 18px;
  text-align: center;
  min-width: 120px;
}

.pipe-step .icon {
  font-size: 1.6rem;
  margin-bottom: 6px;
}

.pipe-step .label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--teal);
}

.pipe-step .sub {
  font-size: 0.7rem;
  color: var(--muted);
  margin-top: 3px;
}

.pipe-arrow {
  color: var(--muted);
  font-size: 1.4rem;
  padding: 0 6px;
}

/* Results grid */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.metric-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.metric-card .metric-val {
  font-size: 2rem;
  font-weight: 700;
  color: var(--green);
}

.metric-card .metric-label {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 6px;
}

.metric-card .metric-detail {
  font-size: 0.78rem;
  color: #555;
  margin-top: 4px;
}

/* Images */
.img-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

.img-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.img-card img {
  width: 100%;
  display: block;
  background: #fff;
}

.img-card .cap {
  padding: 12px 16px;
  font-size: 0.82rem;
  color: var(--muted);
}

/* Code block */
pre {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
  font-size: 0.83rem;
  line-height: 1.7;
  color: #a8d8a8;
}

code {
  font-family: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
}

/* Module table */
.mod-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.mod-table th {
  background: var(--surface2);
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.75rem;
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.mod-table td {
  padding: 10px 14px;
  border-top: 1px solid var(--border);
  vertical-align: top;
}

.mod-table tr:hover td {
  background: var(--surface);
}

.tag {
  display: inline-block;
  background: #1a3a5c;
  color: var(--teal);
  border-radius: 6px;
  padding: 2px 8px;
  font-size: 0.73rem;
  margin: 1px;
}

.status {
  color: var(--green);
  font-weight: 600;
}

/* Math */
.math-block {
  background: var(--surface);
  border-left: 3px solid var(--purple);
  border-radius: 0 10px 10px 0;
  padding: 16px 20px;
  font-family: "Cambria Math", Georgia, serif;
  font-size: 1.05rem;
  color: var(--purple);
  margin: 12px 0;
  line-height: 2;
}

/* Algo cards */
.algo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.algo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.algo-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--orange);
}

.algo-card ul {
  padding-left: 18px;
  font-size: 0.84rem;
  color: var(--muted);
  line-height: 1.8;
}

footer {
  text-align: center;
  padding: 40px 0 20px;
  color: var(--dim);
  font-size: 0.82rem;
  border-top: 1px solid var(--border);
  margin-top: 20px;
}