:root {
  --bg: #0c1117;
  --bg-elev: #121a22;
  --bg-row: #0f161e;
  --line: #243041;
  --text: #e8eef5;
  --muted: #8b9bb0;
  --accent: #3dba8c;
  --accent-dim: #2a7d5f;
  --warn: #e2a84a;
  --ok: #3dba8c;
  --btn-fg: #062016;
  --bg-glow-1: #163028;
  --bg-glow-2: #1a2433;
  --panel-glass: rgba(12, 17, 23, 0.72);
  --panel-border: rgba(36, 48, 65, 0.9);
  --shadow: rgba(0, 0, 0, 0.45);
  --sidebar: 260px;
  --font: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --radius: 10px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(1100px 560px at 8% -12%, var(--bg-glow-1) 0%, transparent 55%),
    radial-gradient(900px 480px at 100% 0%, var(--bg-glow-2) 0%, transparent 48%),
    var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.55;
  color-scheme: dark;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.layout {
  display: grid;
  grid-template-columns: var(--sidebar) 1fr;
  min-height: 100vh;
}

.sidebar {
  border-right: 1px solid var(--panel-border);
  background: var(--panel-glass);
  backdrop-filter: blur(14px) saturate(1.05);
  -webkit-backdrop-filter: blur(14px) saturate(1.05);
  padding: 1.35rem 0.95rem 2rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.35rem 0.55rem 1.15rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.1rem;
  color: inherit;
  text-decoration: none;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  background: linear-gradient(145deg, #fff 0%, #d7e6df 100%);
  color: #0c1117;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.85rem;
  box-shadow: 0 0 0 1px rgba(61, 186, 140, 0.25);
}
.brand-name {
  font-family: var(--mono);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.88rem;
  color: var(--accent);
}

.nav-group { margin-bottom: 1rem; }
.nav-title {
  display: block;
  padding: 0.35rem 0.55rem 0.55rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.nav a {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0.7rem;
  color: var(--text);
  border-radius: 8px;
  text-decoration: none;
  font-size: 0.93rem;
  border: 1px solid transparent;
  margin-bottom: 0.2rem;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.nav a:hover {
  background: rgba(61, 186, 140, 0.06);
  border-color: rgba(61, 186, 140, 0.12);
  text-decoration: none;
}
.nav a.is-active {
  background: rgba(61, 186, 140, 0.12);
  border-color: rgba(61, 186, 140, 0.28);
  color: var(--accent);
  font-weight: 500;
}
.nav-num {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  min-width: 1.4rem;
}
.nav a.is-active .nav-num { color: var(--accent); }

.sidebar-foot {
  margin-top: 1.25rem;
  padding: 0.85rem 0.55rem 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 0.85rem;
}
.sidebar-foot a { color: var(--muted); }
.sidebar-foot a:hover { color: var(--accent); }

.main {
  padding: 2.25rem clamp(1.25rem, 4vw, 3rem) 3.5rem;
  max-width: 880px;
  animation: rise 0.35s ease both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.65rem;
}
.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(61, 186, 140, 0.7);
}

.main h1 {
  margin: 0 0 0.7rem;
  font-size: clamp(1.55rem, 3vw, 1.95rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
}
.main h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.12rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.main h3 {
  margin: 1.35rem 0 0.5rem;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text);
}
.main p, .main li { color: var(--text); }
.main .lead {
  color: var(--muted);
  font-size: 1.02rem;
  margin: 0 0 1.5rem;
  max-width: 42rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.85rem;
  margin: 1.15rem 0 1.5rem;
}
.card {
  background: linear-gradient(180deg, rgba(18, 26, 34, 0.95), rgba(15, 22, 30, 0.88));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.05rem 1.05rem;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
}
.card h3 {
  margin: 0 0 0.4rem;
  font-size: 0.95rem;
  color: var(--accent);
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0.75rem 0 1.1rem;
}
.pill {
  display: inline-block;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  border: 1px solid rgba(61, 186, 140, 0.28);
  background: rgba(61, 186, 140, 0.08);
  color: var(--accent);
  font-size: 0.78rem;
  font-family: var(--mono);
}

.main ul { padding-left: 1.15rem; margin: 0.4rem 0 1rem; }
.main ul li { margin: 0.28rem 0; }
.main ul.clean {
  list-style: none;
  padding: 0;
}
.main ul.clean li {
  position: relative;
  padding-left: 1.15rem;
  margin: 0.45rem 0;
}
.main ul.clean li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.85;
}

.steps {
  display: grid;
  gap: 0.75rem;
  margin: 1rem 0 1.5rem;
  counter-reset: step;
}
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  padding: 0.95rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(18, 26, 34, 0.65);
}
.step-num {
  width: 1.85rem;
  height: 1.85rem;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--btn-fg);
  background: var(--accent);
  box-shadow: 0 0 16px rgba(61, 186, 140, 0.35);
}
.step h3 { margin: 0.1rem 0 0.3rem; font-size: 0.95rem; }
.step p { margin: 0; color: var(--muted); font-size: 0.9rem; }

.main table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 0.85rem 0 1.35rem;
  font-size: 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(15, 22, 30, 0.55);
}
.main th, .main td {
  border-bottom: 1px solid var(--line);
  padding: 0.65rem 0.8rem;
  text-align: left;
  vertical-align: top;
}
.main tr:last-child th,
.main tr:last-child td { border-bottom: none; }
.main th {
  background: rgba(18, 26, 34, 0.95);
  color: var(--muted);
  font-weight: 500;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.main td:first-child {
  color: var(--accent);
  font-weight: 500;
  white-space: nowrap;
}

.faq {
  display: grid;
  gap: 0.65rem;
  margin: 1rem 0 1.5rem;
}
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(18, 26, 34, 0.55);
  padding: 0.9rem 1.05rem;
}
.faq-item strong {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--text);
  font-size: 0.95rem;
}
.faq-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.callout {
  margin: 1.25rem 0;
  padding: 0.95rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid rgba(61, 186, 140, 0.28);
  background: rgba(61, 186, 140, 0.08);
  color: var(--text);
  font-size: 0.92rem;
}
.callout strong { color: var(--accent); }

.main code {
  font-family: var(--mono);
  font-size: 0.84em;
  background: rgba(10, 16, 22, 0.9);
  border: 1px solid var(--line);
  padding: 0.08rem 0.35rem;
  border-radius: 4px;
}

.main .next {
  margin-top: 2.25rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1rem;
}

.menu-toggle {
  display: none;
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 20;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  padding: 0.45rem 0.75rem;
  font: inherit;
  box-shadow: 0 8px 24px var(--shadow);
}

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .menu-toggle { display: inline-block; }
  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(88vw, var(--sidebar));
    transform: translateX(-105%);
    transition: transform 0.2s ease;
    z-index: 15;
    box-shadow: 16px 0 40px var(--shadow);
  }
  .sidebar.open { transform: translateX(0); }
  .main { padding: 4.2rem 1.15rem 2.5rem; }
  .main td:first-child { white-space: normal; }
}

@media (prefers-reduced-motion: reduce) {
  .main { animation: none; }
}