:root {
  --bg: #f6f4ef;
  --bg-soft: #efe8dd;
  --ink: #0f172a;
  --muted: #475569;
  --primary: #1f4cff;
  --accent: #2bc4b6;
  --warm: #ffb703;
  --line: #dde3ec;
  --card: #ffffff;
  --shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  background: radial-gradient(circle at 20% 10%, #ffffff, var(--bg) 60%),
    linear-gradient(120deg, rgba(31, 76, 255, 0.05), rgba(43, 196, 182, 0.06));
  color: var(--ink);
  min-height: 100vh;
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.05'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
  z-index: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 5vw;
  backdrop-filter: blur(10px);
  background: rgba(246, 244, 239, 0.8);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.brand .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 0 0 4px rgba(31, 76, 255, 0.15);
}

.nav {
  display: flex;
  gap: 20px;
  font-size: 14px;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
}

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

.btn {
  border: none;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 10px 20px rgba(31, 76, 255, 0.2);
  cursor: pointer;
}

.btn.outline {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  box-shadow: none;
}

.btn.ghost {
  background: transparent;
  color: var(--primary);
  border: 1px solid rgba(31, 76, 255, 0.2);
  box-shadow: none;
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  padding: 80px 5vw 60px;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
}

.hero h1 {
  font-size: clamp(36px, 4vw, 56px);
  margin: 12px 0;
}

.lead {
  font-size: 18px;
  color: var(--muted);
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.hero-tags span {
  background: var(--bg-soft);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  color: #1f2937;
}

.hero-card {
  background: var(--card);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
}

.card-title {
  font-weight: 600;
  margin-bottom: 18px;
}

.card-flow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-soft);
  border-radius: 16px;
  padding: 16px;
  font-weight: 600;
}

.flow-step {
  background: #fff;
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 13px;
  border: 1px solid var(--line);
}

.flow-arrow {
  color: var(--primary);
  font-size: 18px;
}

.card-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.metric {
  font-size: 12px;
  color: var(--muted);
}

.section {
  padding: 70px 5vw;
}

.section-title h2 {
  font-size: 32px;
  margin: 0 0 10px;
}

.section-title p {
  margin: 0 0 30px;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 20px;
}

.grid.two {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.panel {
  background: var(--card);
  border-radius: 20px;
  padding: 24px;
  border: 1px solid var(--line);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
}

.panel.highlight {
  border: 1px solid rgba(31, 76, 255, 0.2);
  background: linear-gradient(135deg, rgba(31, 76, 255, 0.08), rgba(43, 196, 182, 0.08));
}

.panel.note {
  margin-top: 20px;
  background: #fff8eb;
  border: 1px solid #ffd9a0;
}

.table-wrap {
  margin-top: 24px;
  overflow: auto;
}

.table-wrap table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.table-wrap th,
.table-wrap td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.table-wrap th {
  background: #f8fafc;
}

.diagram {
  display: grid;
  grid-template-columns: minmax(300px, 2fr) minmax(260px, 1fr);
  gap: 20px;
}

.diagram-card {
  background: #fff;
  border-radius: 20px;
  padding: 20px;
  border: 1px solid var(--line);
}

.diagram-title {
  font-weight: 600;
  margin-bottom: 12px;
}

.label {
  font-size: 13px;
  color: var(--muted);
  display: block;
  margin-bottom: 8px;
}

.input,
.code-area {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  font-family: "IBM Plex Mono", monospace;
  background: #fff;
  font-size: 13px;
}

.code-area {
  resize: vertical;
  min-height: 120px;
}

.row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 16px 0;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin: 16px 0 20px;
}

.status-item {
  background: #f8fafc;
  border-radius: 14px;
  padding: 12px 14px;
  border: 1px solid var(--line);
}

.status-item span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.status-item strong {
  display: block;
  margin-top: 6px;
  font-size: 16px;
}

.config-raw {
  margin-top: 16px;
  max-height: 220px;
  overflow: auto;
  background: #0f172a;
  color: #e2e8f0;
}

.diff-block {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed rgba(15, 23, 42, 0.15);
}

.diff-title {
  font-weight: 600;
  margin-bottom: 12px;
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.diff-label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.diff-meta {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
}

.diff-meta strong {
  color: var(--ink);
}

.added {
  background: rgba(255, 183, 3, 0.25);
  color: #fef3c7;
  padding: 0 4px;
  border-radius: 4px;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.result {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.result strong {
  display: block;
  font-size: 18px;
  margin-top: 6px;
}

.hint {
  margin-top: 16px;
  font-size: 13px;
  color: var(--muted);
}

.step {
  padding: 14px 0;
  border-bottom: 1px dashed rgba(15, 23, 42, 0.1);
}

.step:last-child {
  border-bottom: none;
}

.step pre {
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 12px;
  padding: 12px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  overflow: auto;
}

pre {
  background: #0f172a;
  color: #e2e8f0;
  padding: 14px;
  border-radius: 12px;
  overflow-x: auto;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
}

code {
  font-family: "IBM Plex Mono", monospace;
}

.muted {
  color: var(--muted);
  margin-top: 12px;
}

.footer {
  padding: 40px 5vw 60px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  background: rgba(246, 244, 239, 0.8);
}

.footer-tags span {
  background: var(--bg-soft);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
}

[data-animate] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].in {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .nav {
    display: none;
  }

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

  .hero {
    padding-top: 40px;
  }
}