:root {
  --pio-primary: #0F1226;
  --pio-accent: #35E0C8;
  --pio-bg: #0B0D1A;
  --pio-dark: #0B0D1A;
  --pio-text: #E6EAF5;
  --pio-muted: #8A93B2;
  --pio-line: rgba(53, 224, 200, 0.16);
  --pio-unit: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

.pio-body {
  background: var(--pio-bg);
  color: var(--pio-text);
  font-family: "Manrope", system-ui, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

.pio-trace-field {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    radial-gradient(var(--pio-line) 1px, transparent 1px),
    radial-gradient(circle at 82% 12%, rgba(53, 224, 200, 0.10), transparent 42%),
    radial-gradient(circle at 8% 88%, rgba(53, 224, 200, 0.07), transparent 40%);
  background-size: 34px 34px, 100% 100%, 100% 100%;
  opacity: 0.9;
}

main, .pio-topbar, .pio-footer { position: relative; z-index: 1; }

/* ---- top bar ---- */
.pio-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(var(--pio-unit) * 2.5) calc(var(--pio-unit) * 3);
  border-bottom: 1px solid var(--pio-line);
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(11, 13, 26, 0.72);
}

.pio-wordmark {
  font-family: "IBM Plex Mono", monospace;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 0.98rem;
  color: var(--pio-text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.pio-node-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--pio-accent);
  box-shadow: 0 0 10px var(--pio-accent);
}

.pio-nav { display: flex; gap: calc(var(--pio-unit) * 3); }

.pio-nav-link {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  color: var(--pio-muted);
  text-decoration: none;
  text-transform: lowercase;
  letter-spacing: 0.04em;
  transition: color 0.18s ease;
}
.pio-nav-link:hover { color: var(--pio-accent); }

.pio-nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; }
.pio-nav-toggle span { width: 24px; height: 2px; background: var(--pio-text); border-radius: 2px; }

/* ---- hero ---- */
.pio-hero {
  padding: calc(var(--pio-unit) * 12) calc(var(--pio-unit) * 3) calc(var(--pio-unit) * 10);
  max-width: 940px;
  margin: 0 auto;
}
.pio-eyebrow {
  font-family: "IBM Plex Mono", monospace;
  color: var(--pio-accent);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  margin-bottom: calc(var(--pio-unit) * 2);
}
.pio-hero-title {
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(2rem, 6vw, 3.4rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.01em;
}
.pio-hero-sub {
  color: var(--pio-muted);
  font-size: clamp(1rem, 2.3vw, 1.18rem);
  max-width: 620px;
  margin-top: calc(var(--pio-unit) * 3);
}
.pio-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--pio-unit) * 2);
  margin-top: calc(var(--pio-unit) * 5);
}
.pio-btn-primary, .pio-btn-ghost {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.86rem;
  padding: calc(var(--pio-unit) * 1.6) calc(var(--pio-unit) * 3);
  border-radius: 10px;
  text-decoration: none;
  transition: all 0.18s ease;
}
.pio-btn-primary {
  background: var(--pio-accent);
  color: #04231F;
  font-weight: 600;
}
.pio-btn-primary:hover { box-shadow: 0 0 22px rgba(53, 224, 200, 0.45); transform: translateY(-1px); }
.pio-btn-ghost {
  color: var(--pio-text);
  border: 1px solid var(--pio-line);
}
.pio-btn-ghost:hover { border-color: var(--pio-accent); color: var(--pio-accent); }

.pio-readout {
  margin-top: calc(var(--pio-unit) * 6);
  display: inline-flex;
  align-items: center;
  gap: calc(var(--pio-unit) * 1.5);
  padding: calc(var(--pio-unit)) calc(var(--pio-unit) * 2);
  border: 1px solid var(--pio-line);
  border-radius: 8px;
  background: var(--pio-primary);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.8rem;
}
.pio-readout-label { color: var(--pio-muted); }
.pio-readout-value { color: var(--pio-accent); }

/* ---- sections ---- */
.pio-services, .pio-bench, .pio-contact {
  max-width: 1040px;
  margin: 0 auto;
  padding: calc(var(--pio-unit) * 9) calc(var(--pio-unit) * 3);
  border-top: 1px solid var(--pio-line);
}
.pio-section-h {
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 600;
}
.pio-section-lead {
  color: var(--pio-muted);
  max-width: 640px;
  margin-top: calc(var(--pio-unit) * 2);
}

.pio-service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: calc(var(--pio-unit) * 2.5);
  margin-top: calc(var(--pio-unit) * 5);
}
.pio-service-card {
  background: var(--pio-primary);
  border: 1px solid var(--pio-line);
  border-radius: 12px;
  padding: calc(var(--pio-unit) * 3.5);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.pio-service-card:hover { transform: translateY(-4px); border-color: var(--pio-accent); }
.pio-service-idx {
  font-family: "IBM Plex Mono", monospace;
  color: var(--pio-accent);
  font-size: 0.82rem;
}
.pio-service-card h3 { margin: calc(var(--pio-unit) * 1.5) 0; font-size: 1.16rem; }
.pio-service-card p { color: var(--pio-muted); font-size: 0.96rem; }

.pio-tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: calc(var(--pio-unit) * 2);
  margin-top: calc(var(--pio-unit) * 5);
}
.pio-tool {
  background: linear-gradient(160deg, var(--pio-primary), var(--pio-dark));
  border: 1px solid var(--pio-line);
  border-radius: 12px;
  padding: calc(var(--pio-unit) * 3);
  position: relative;
}
.pio-tool-tag {
  display: inline-block;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--pio-accent);
  border: 1px solid var(--pio-line);
  border-radius: 6px;
  padding: 2px 8px;
  margin-bottom: calc(var(--pio-unit) * 1.5);
}
.pio-tool h4 { font-size: 1.05rem; margin-bottom: calc(var(--pio-unit)); }
.pio-tool p { color: var(--pio-muted); font-size: 0.92rem; }

/* ---- contact ---- */
.pio-contact-block {
  margin-top: calc(var(--pio-unit) * 4);
  background: var(--pio-primary);
  border: 1px solid var(--pio-line);
  border-radius: 12px;
  padding: calc(var(--pio-unit) * 4);
  max-width: 640px;
}
.pio-contact-row {
  display: flex;
  gap: calc(var(--pio-unit) * 2);
  padding: calc(var(--pio-unit) * 1.5) 0;
  border-bottom: 1px dashed var(--pio-line);
}
.pio-contact-row:last-child { border-bottom: 0; }
.pio-contact-key {
  font-family: "IBM Plex Mono", monospace;
  color: var(--pio-accent);
  min-width: 72px;
  font-size: 0.86rem;
}
.pio-contact-val { color: var(--pio-text); text-decoration: none; }
a.pio-contact-val:hover { color: var(--pio-accent); }

/* ---- footer ---- */
.pio-footer {
  border-top: 1px solid var(--pio-line);
  padding: calc(var(--pio-unit) * 5) calc(var(--pio-unit) * 3);
  text-align: center;
}
.pio-footer-legal { color: var(--pio-muted); font-size: 0.84rem; font-family: "IBM Plex Mono", monospace; }
.pio-footer-links { margin-top: calc(var(--pio-unit) * 1.5); }
.pio-footer-links a { color: var(--pio-accent); text-decoration: none; font-size: 0.9rem; }
.pio-footer-links a:hover { text-decoration: underline; }

/* ---- privacy page ---- */
.pio-legal-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: calc(var(--pio-unit) * 8) calc(var(--pio-unit) * 3);
}
.pio-legal-wrap h1 {
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  font-weight: 600;
  margin-bottom: calc(var(--pio-unit) * 3);
}
.pio-legal-wrap h2 {
  font-family: "IBM Plex Mono", monospace;
  font-size: 1.1rem;
  color: var(--pio-accent);
  margin: calc(var(--pio-unit) * 4) 0 calc(var(--pio-unit) * 1.5);
}
.pio-legal-wrap p { color: var(--pio-text); margin-bottom: calc(var(--pio-unit) * 1.5); }
.pio-legal-back {
  display: inline-block;
  margin-top: calc(var(--pio-unit) * 5);
  font-family: "IBM Plex Mono", monospace;
  color: var(--pio-accent);
  text-decoration: none;
}
.pio-legal-back:hover { text-decoration: underline; }

/* ---- responsive ---- */
@media (max-width: 680px) {
  .pio-nav { display: none; }
  .pio-nav.pio-nav-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    right: calc(var(--pio-unit) * 3);
    background: var(--pio-primary);
    border: 1px solid var(--pio-line);
    border-radius: 10px;
    padding: calc(var(--pio-unit) * 2);
    gap: calc(var(--pio-unit) * 1.5);
  }
  .pio-nav-toggle { display: flex; }
}