:root {
  /* NanoBot Blue Palette */
  --bg: #070d1b;
  --bg-strong: #0b1528;
  --panel: rgba(12, 24, 54, 0.66);
  --panel-strong: rgba(13, 28, 66, 0.86);
  --ink: #f1f5f9;
  --muted: #8fafc8;
  --line: rgba(100, 160, 255, 0.12);
  --accent: #1a6cf5;
  --accent-strong: #7cc2ff;
  --accent-soft: rgba(26, 108, 245, 0.16);
  --chip: rgba(26, 108, 245, 0.08);
  --shadow: 0 20px 48px rgba(0, 0, 0, 0.55);
  --shadow-blue: 0 0 24px rgba(26, 108, 245, 0.25);
  --glass-blur: blur(18px);
  --radius: 22px;
  --max: 1180px;
  --font-heading: "Avenir Next", "Trebuchet MS", "Gill Sans", ui-sans-serif, sans-serif;
  --font-body: "Avenir Next", "Segoe UI", ui-sans-serif, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: linear-gradient(160deg, #070d1b, #0a1829 45%, #050f1e);
  color: var(--ink);
  font: 16px/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
code, pre { font-family: ui-monospace, "SF Mono", SFMono-Regular, Menlo, monospace; }

code {
  background: rgba(26, 108, 245, 0.1);
  border: 1px solid rgba(26, 108, 245, 0.2);
  border-radius: 8px;
  padding: .14rem .38rem;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: .9em;
}

pre {
  margin: 0;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(0, 0, 0, 0.55);
}

pre code {
  padding: 0;
  border: 0;
  background: transparent;
  font-size: .92rem;
}

/* ── Layout ── */
.site-shell {
  width: min(calc(100vw - 20px), var(--max));
  margin: 0 auto;
  padding: 14px 0 56px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  padding-top: 10px;
}

.site-header__inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow), var(--shadow-blue);
}

/* ── Brand ── */
.brand {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand__logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 8px;
  flex-shrink: 0;
}

.brand__text { display: grid; }

.brand__eyebrow {
  display: block;
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: .09em;
  font-size: .72rem;
  font-weight: 800;
}

.brand__name {
  display: block;
  font: 800 1.08rem/1.15 var(--font-heading);
}

/* ── Nav ── */
.topnav {
  display: none;
  gap: 8px;
  flex-wrap: wrap;
}

.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 48px;
  min-width: 48px;
  padding: .72rem 1rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--chip);
  color: var(--ink);
  font: 700 .88rem/1 var(--font-body);
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease, color .2s ease;
  -webkit-tap-highlight-color: transparent;
}

.menu-toggle:hover,
.menu-toggle:focus-visible,
.menu-toggle[aria-expanded="true"] {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.mobile-menu {
  display: grid;
  gap: 6px;
  margin-top: 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow);
  max-height: min(65vh, 420px);
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-menu[hidden] { display: none; }

.mobile-menu__link {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: .78rem 1rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  font-size: .95rem;
  transition: background .15s ease, color .15s ease;
  -webkit-tap-highlight-color: transparent;
}

.mobile-menu__link.is-active,
.mobile-menu__link:hover {
  background: var(--accent);
  color: #fff;
}

.topnav__link, .button, .text-link, .chip {
  text-decoration: none;
  transition: .2s ease;
}

.topnav__link {
  padding: .65rem .9rem;
  border-radius: 999px;
  background: var(--chip);
  border: 1px solid transparent;
  font-size: .9rem;
  font-weight: 600;
}

.topnav__link.is-active, .topnav__link:hover {
  background: var(--accent);
  color: #fff;
}

/* ── Page ── */
.page { display: grid; gap: 24px; margin-top: 20px; }
.hero { display: grid; gap: 16px; }

/* ── Glass Cards ── */
.hero__copy, .hero__card, .stat-card, .info-card, .step-card, .split-card,
.command-card, .config-card, .toolbar, .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  transition: box-shadow .25s ease, border-color .25s ease, transform .25s ease;
}

.hero__card:hover, .stat-card:hover, .info-card:hover,
.step-card:hover, .split-card:hover, .command-card:hover, .config-card:hover {
  box-shadow: 0 28px 56px rgba(0, 0, 0, 0.65), var(--shadow-blue);
  border-color: rgba(26, 108, 245, 0.25);
}

.hero__copy {
  padding: 1.5rem 1.35rem;
  background:
    linear-gradient(135deg, var(--accent-soft), transparent 55%),
    linear-gradient(180deg, var(--panel), var(--panel-strong));
  position: relative;
  overflow: hidden;
}

.hero__copy::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -40px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(26, 108, 245, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero__card {
  padding: 1.25rem 1.25rem 1.25rem 1.6rem;
  overflow: hidden;
  position: relative;
}

.hero-card__stripe {
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
  border-radius: 4px 0 0 4px;
}

.hero-card__label {
  margin: .1rem 0 .75rem 0;
  color: var(--accent-strong);
  font-size: .76rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  font-weight: 800;
}

/* ── Typography ── */
h1, h2, h3 {
  margin: 0;
  font-family: var(--font-heading);
  line-height: 1.05;
}

h1 {
  font-size: clamp(2rem, 7vw, 4.2rem);
  max-width: 14ch;
  background: linear-gradient(135deg, #fff 30%, var(--accent-strong));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 { font-size: clamp(1.35rem, 3vw, 2rem); }
h3 { font-size: 1.05rem; }

.lede {
  margin: .85rem 0 0;
  max-width: 34rem;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.65;
}

.eyebrow {
  margin: 0 0 .6rem;
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: .1em;
  font-size: .74rem;
  font-weight: 800;
}

/* ── Button row ── */
.button-row, .badge-row, .chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: .8rem 1.2rem;
  border-radius: 14px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: .95rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  -webkit-tap-highlight-color: transparent;
}

.button:hover, .button:focus-visible {
  background: #2f7fff;
  box-shadow: 0 0 20px rgba(26, 108, 245, 0.45);
  transform: translateY(-1px);
}

.button--ghost {
  background: var(--chip);
  border: 1px solid var(--line);
  color: var(--ink);
}

.button--ghost:hover {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(26, 108, 245, 0.35);
}

/* ── Sections ── */
.stack { display: grid; gap: 16px; }
.section-head { display: grid; gap: .3rem; }
.section-head p:last-child { margin: .4rem 0 0; color: var(--muted); max-width: 50rem; }

.stat-grid, .card-grid, .step-grid, .command-grid, .config-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

/* ── Stat cards ── */
.stat-card, .info-card, .step-card, .config-card { padding: 1.1rem; }

.stat-card {
  position: relative;
  overflow: hidden;
}

.stat-card::after {
  content: "";
  position: absolute;
  bottom: -20px;
  right: -10px;
  width: 80px;
  height: 80px;
  background: radial-gradient(circle, var(--accent-soft) 0%, transparent 65%);
  pointer-events: none;
}

.stat-card__value {
  margin: 0;
  color: var(--accent-strong);
  font: 900 2.4rem/1 var(--font-heading);
  letter-spacing: -.02em;
}

.stat-card__label {
  margin-top: .5rem;
  font-weight: 700;
  font-size: .95rem;
}

.stat-card__note, .info-card p, .meta-line, .toolbar__note,
.config-list span, .faq-item p { color: var(--muted); font-size: .92rem; }

.text-link {
  color: var(--accent-strong);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(124, 194, 255, 0.35);
  padding-bottom: 1px;
  transition: border-color .2s;
}

.text-link:hover { border-color: var(--accent-strong); }

/* ── Split card ── */
.split-card {
  display: grid;
  gap: 20px;
  padding: 1.25rem;
}

/* ── Lists ── */
.bullet-list { margin: .65rem 0 0; padding-left: 1.1rem; }
.bullet-list li { margin-top: .4rem; line-height: 1.55; }
.bullet-list li:first-child { margin-top: 0; }

/* ── Pills / badges ── */
.pill, .badge, .count-pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: .18rem .65rem;
  border-radius: 999px;
  background: var(--chip);
  border: 1px solid var(--line);
  font-size: .82rem;
  font-weight: 700;
}

.badge--strong {
  background: rgba(255, 80, 80, 0.12);
  color: #ff8fa3;
  border-color: rgba(255, 80, 80, 0.25);
}

/* ── Toolbar / search ── */
.toolbar { display: grid; gap: 1rem; padding: 2rem; margin: 1rem; }
.search { display: grid; gap: .45rem; l }
.search__label { font-weight: 800; font-size: .9rem; }

input[type="search"] {
  width: 100%;
  min-height: 52px;
  padding: .85rem 1rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.4);
  color: var(--ink);
  font: inherit;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color .2s;
}

input[type="search"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ── Filter chips ── */
.chip {
  min-height: 44px;
  margin-top: 5px;
  margin-bottom: 5px;
  padding: .55rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--chip);
  color: var(--ink);
  font: inherit;
  font-size: .88rem;
  font-weight: 700;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
  -webkit-tap-highlight-color: transparent;
}

.chip.is-active, .chip:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ── Command cards ── */
.command-card { display: grid; gap: .6rem; padding: 1rem; }
.command-card__top { display: grid; gap: .5rem; }
.command-card p { margin: 0; }
.command-section.is-hidden, .command-card.is-hidden { display: none; }
.config-card h3 { margin-bottom: .85rem; }

/* ── Config list ── */
.config-list {
  display: grid;
  gap: .8rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.config-list li {
  display: grid;
  gap: .2rem;
  padding-top: .8rem;
  border-top: 1px solid var(--line);
}

.config-list li:first-child {
  border-top: 0;
  padding-top: 0;
}

/* ── Step cards ── */
.step-card {
  position: relative;
  padding: 1.1rem 1.1rem 1.1rem 4.2rem;
}

.step-card h2 { font-size: 1.1rem; margin-bottom: .6rem; }

.step-card__num {
  position: absolute;
  top: 1rem;
  left: 1rem;
  display: grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), #2f7fff);
  color: #fff;
  font: 900 1rem/1 var(--font-heading);
  box-shadow: 0 4px 14px rgba(26, 108, 245, 0.45);
  flex-shrink: 0;
}

/* ── FAQ ── */
.faq-list { display: grid; gap: 10px; }
.faq-item { padding: 0 1.1rem; }

.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  font: 700 1rem/1.35 var(--font-heading);
  -webkit-tap-highlight-color: transparent;
}

.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: var(--chip);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  font-weight: 700;
  transition: transform .2s ease, background .2s;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
  background: var(--accent);
  border-color: var(--accent);
}

.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p { margin: 0 0 1rem; line-height: 1.65; }

/* ── Scroll top ── */
.scroll-top {
  position: fixed;
  right: 16px;
  bottom: calc(16px + env(safe-area-inset-bottom));
  z-index: 60;
  min-width: 48px;
  min-height: 48px;
  padding: .5rem .75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(13, 28, 66, 0.9);
  color: var(--accent-strong);
  font: 800 .85rem/1 var(--font-body);
  cursor: pointer;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow), var(--shadow-blue);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity .22s ease, transform .22s ease;
  -webkit-tap-highlight-color: transparent;
}

.scroll-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

/* ── Feature highlight strip ── */
.feature-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.feature-pill {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem .85rem;
  border-radius: 999px;
  background: var(--chip);
  border: 1px solid rgba(26, 108, 245, 0.2);
  font-size: .85rem;
  font-weight: 700;
  color: var(--accent-strong);
}

.feature-pill__icon {
  font-size: 1rem;
  line-height: 1;
}

/* ── Responsive ── */
@media (min-width: 720px) {
  .site-header__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .menu-toggle,
  .mobile-menu { display: none; }
  .topnav { display: flex; }
  .hero {
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, .85fr);
    align-items: stretch;
  }
  .stat-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .card-grid, .step-grid, .config-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .command-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split-card { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 980px) {
  .card-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .step-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .config-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .command-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ── Document prose (privacy policy, long-form pages) ── */
.doc-prose {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 1.4rem 1.45rem;
  display: grid;
  gap: .9rem;
}
.doc-prose > :first-child { margin-top: 0; }
.doc-prose p { margin: 0; color: var(--ink); line-height: 1.7; }
.doc-prose h3 {
  margin: .35rem 0 -.15rem;
  font-family: var(--font-heading);
  font-size: 1.05rem;
}
.doc-prose a { color: var(--accent-strong); }
.doc-prose strong { color: var(--ink); }
.doc-prose .bullet-list li { color: var(--ink); }
.doc-prose .bullet-list code,
.doc-prose p code,
.doc-prose .doc-table code { font-size: .85em; }

/* ── Tables ── */
.doc-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: 16px;
}
.doc-table {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  font-size: .9rem;
}
.doc-table th,
.doc-table td {
  text-align: left;
  vertical-align: top;
  padding: .6rem .75rem;
  border-bottom: 1px solid var(--line);
}
.doc-table thead th {
  color: var(--accent-strong);
  background: rgba(26, 108, 245, 0.1);
  font-family: var(--font-heading);
  font-weight: 600;
}
.doc-table tbody td { color: var(--muted); }
.doc-table td:first-child { color: var(--ink); }
.doc-table tbody tr:last-child td { border-bottom: none; }

/* ── iOS safe area bottom ── */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
  .site-shell { padding-bottom: calc(56px + env(safe-area-inset-bottom)); }
}