/* NwTwin site, bright startup design system (same system as ctrlpi-cloud).
   Mobile-first: base rules target small (iPhone) screens; the min-width
   blocks at the end restore the tablet/desktop layout. */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue: #2563eb;
  --emerald: #10b981;
  --cyan: #06b6d4;
  --violet: #8b5cf6;
  --amber: #f59e0b;
  --rose: #ec4899;
  --brand: rgb(210, 79, 73);
  --brand-dark: rgb(163, 53, 48);
  --ink: #0f172a;
  --slate: #475569;
  --muted: #94a3b8;
  --bg: #f8fafc;
  --card: #ffffff;
  --line: rgba(15, 23, 42, 0.08);
  --radius: 20px;
  --shadow: 0 8px 32px rgba(31, 38, 135, 0.08);
  --shadow-lift: 0 16px 48px rgba(31, 38, 135, 0.14);
}

/* overflow-x: hidden - the hero glow blobs extend past the viewport edges
   by design; without this they make the whole page scroll sideways on phones */
html { scroll-behavior: smooth; overflow-y: scroll; overflow-x: hidden; }

body {
  font-family: 'Inter', -apple-system, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1000px 500px at 85% -5%, rgba(6, 182, 212, 0.10), transparent 60%),
    radial-gradient(900px 500px at 0% 10%, rgba(16, 185, 129, 0.10), transparent 55%),
    radial-gradient(800px 600px at 55% 105%, rgba(139, 92, 246, 0.07), transparent 60%),
    var(--bg);
  line-height: 1.6;
  min-height: 100vh;
}

h1, h2, h3, h4 { font-family: 'Plus Jakarta Sans', sans-serif; letter-spacing: -0.02em; line-height: 1.15; }
code, pre { font-family: 'JetBrains Mono', monospace; }
a { color: var(--blue); text-decoration: none; }
img, svg { max-width: 100%; }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }

/* ── Nav ── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(248, 250, 252, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 16px; height: 64px; padding: 0 18px; }
.logo { display: flex; align-items: baseline; gap: 7px; margin-right: auto; }
/* Logo, brand-colored wordmark */
.logo .mark {
  font-family: 'Plus Jakarta Sans', sans-serif; font-weight: 800; font-size: 1.35rem;
  letter-spacing: -0.5px; color: var(--brand);
}
.logo .mark .tw { color: var(--brand); }
.nav a.link { display: none; font-size: 0.9rem; font-weight: 600; color: var(--slate); transition: color 0.15s; }
.nav a.link:hover { color: var(--blue); }
.nav .gh, .cta-row .gh {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: linear-gradient(135deg, #1e293b, var(--ink)); color: #fff; border-radius: 50%;
  transition: transform 0.12s, box-shadow 0.15s;
}
.nav .gh:hover, .cta-row .gh:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(15, 23, 42, 0.3); }
.nav .gh svg, .cta-row .gh svg { width: 18px; height: 18px; fill: currentColor; }
.nav .npmb, .cta-row .npmb { background: linear-gradient(135deg, var(--rose), #dc2626); }
.nav .npmb { margin-left: -6px; }
.nav .npmb:hover, .cta-row .npmb:hover { box-shadow: 0 6px 18px rgba(220, 38, 38, 0.4); }

/* ── Hero ── */
.hero { padding: 44px 20px 48px; text-align: center; }
.hero .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(16, 185, 129, 0.1); border: 1px solid rgba(16, 185, 129, 0.25);
  color: #059669; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.04em;
  padding: 6px 16px; border-radius: 99px; margin-bottom: 26px;
}
.hero h1 { font-size: clamp(2.1rem, 6vw, 3.9rem); font-weight: 800; max-width: 850px; margin: 0 auto 22px; }
.hero h1 .grad {
  background: linear-gradient(280deg, #ef4444 10%, #dc2626 50%, #991b1b 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .sub { font-size: 1.05rem; color: var(--slate); max-width: 660px; margin: 0 auto 38px; }
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 0.95rem; font-weight: 700; padding: 13px 26px; border-radius: 14px;
  transition: transform 0.12s, box-shadow 0.15s;
}
.btn:hover { transform: translateY(-2px); }
.btn.primary { background: linear-gradient(100deg, var(--blue), var(--cyan)); color: #fff; box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35); }
.btn.primary:hover { box-shadow: 0 12px 30px rgba(37, 99, 235, 0.45); }
.hero .cta-row .btn {
  border-radius: 10px; padding: 14px 30px;
  transition: transform 0.18s cubic-bezier(.2,.8,.2,1), background 0.18s, border-color 0.18s, box-shadow 0.18s;
}
.hero .cta-row .btn.primary { background: transparent; color: #059669; border: 1.5px solid rgba(16, 185, 129, 0.45); box-shadow: none; }
.hero .cta-row .btn.ghost { background: transparent; color: var(--blue); border: 1.5px solid rgba(37, 99, 235, 0.4); box-shadow: none; }
.hero .cta-row .btn:hover { transform: translateY(-2px); }
.hero .cta-row .btn.primary:hover { background: rgba(16, 185, 129, 0.1); border-color: var(--emerald); box-shadow: 0 8px 24px rgba(16, 185, 129, 0.18); }
.hero .cta-row .btn.ghost:hover { background: rgba(37, 99, 235, 0.08); border-color: var(--blue); box-shadow: 0 8px 24px rgba(37, 99, 235, 0.18); }
.btn.ghost { background: var(--card); color: var(--ink); border: 1.5px solid var(--line); box-shadow: var(--shadow); transition: transform 0.12s, box-shadow 0.15s, border-color 0.15s, color 0.15s; }
.btn.ghost:hover { border-color: var(--blue); color: var(--blue); }

/* ── Sections ── */
section { padding: 52px 0; }
.sec-head { text-align: center; max-width: 660px; margin: 0 auto 36px; }
.sec-head .kicker {
  font-size: 0.78rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 12px; display: block;
}
.sec-head h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 800; margin-bottom: 14px; }
.sec-head p { color: var(--slate); font-size: 1.05rem; }
.k-blue { color: var(--blue); } .k-green { color: #059669; } .k-cyan { color: #0891b2; }
.k-violet { color: var(--violet); } .k-amber { color: #d97706; } .k-rose { color: var(--rose); }

/* ── Cards ── */
.grid { display: grid; gap: 16px; }
.grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow); transition: transform 0.15s, box-shadow 0.2s;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); }
.card .icon {
  width: 52px; height: 52px; border-radius: 14px; font-size: 1.5rem;
  display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.card .icon svg, .doc-hero .icon svg {
  width: 55%; height: 55%; stroke: currentColor; fill: none;
  stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round;
}
.icon.i-blue { background: rgba(37, 99, 235, 0.12); color: var(--blue); }
.icon.i-green { background: rgba(16, 185, 129, 0.14); color: var(--emerald); }
.icon.i-cyan { background: rgba(6, 182, 212, 0.14); color: var(--cyan); }
.icon.i-violet { background: rgba(139, 92, 246, 0.13); color: var(--violet); }
.icon.i-amber { background: rgba(245, 158, 11, 0.15); color: var(--amber); }
.icon.i-rose { background: rgba(236, 72, 153, 0.12); color: var(--rose); }
.card h3 { font-size: 1.15rem; font-weight: 800; margin-bottom: 8px; }
.card h3 code { font-size: 0.95em; background: none; padding: 0; color: inherit; }
.card p { color: var(--slate); font-size: 0.92rem; flex: 1; }
.card .links { display: flex; gap: 14px; margin-top: 18px; flex-wrap: wrap; align-items: center; }
.card .links a { font-size: 0.85rem; font-weight: 700; display: inline-flex; align-items: center; gap: 5px; }
.card .links a.more { margin-right: auto; }
.card .links a.ext { color: var(--slate); }
.card .links a.ext:hover { color: var(--ink); }
.card .links a.ext svg { width: 16px; height: 16px; fill: currentColor; }
/* npm icons match the nav's rose/red npm button */
.card .links a.ext[aria-label="npm"] { color: #dc2626; }
.card .links a.ext[aria-label="npm"]:hover { color: #b91c1c; }
.tag {
  display: inline-block; font-size: 0.7rem; font-weight: 800; letter-spacing: 0.06em;
  padding: 3px 10px; border-radius: 99px; margin-bottom: 14px; width: fit-content;
}
.tag.t-bridge { background: rgba(37, 99, 235, 0.12); color: #1d4ed8; }
.tag.t-soon { background: rgba(236, 72, 153, 0.12); color: #be185d; }
.tag.t-meta { background: var(--bg); color: var(--muted); border: 1px solid var(--line); }

/* ── How it works ── */
.flow {
  background: var(--card); border: 1px solid var(--line); border-radius: 24px;
  padding: 14px; box-shadow: var(--shadow);
}
/* The schematic is an inline SVG so it stays crisp at any size and needs no
   asset pipeline. Below 641px it is hidden rather than shrunk or scrolled: at
   phone width its labels are illegible and a cut-off diagram reads as broken -
   the numbered steps underneath say the same thing in readable type. */
.flow .diagram { display: none; overflow-x: auto; }
.flow .diagram svg { display: block; min-width: 620px; max-width: 820px; margin: 0 auto; height: auto; }
.steps { counter-reset: step; margin-top: 0; }
.step { display: flex; gap: 18px; padding: 18px 0; border-top: 1px solid var(--line); }
.step:first-child { border-top: none; }
.step .num {
  counter-increment: step; flex-shrink: 0;
  width: 34px; height: 34px; border-radius: 10px; font-weight: 800; font-size: 0.9rem;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(120deg, var(--blue), var(--cyan)); color: #fff;
}
.step .num::before { content: counter(step); }
.step h4 { font-size: 1rem; margin-bottom: 4px; }
.step p { color: var(--slate); font-size: 0.92rem; }

/* ── Doc pages ── */
.doc-hero { padding: 44px 20px 32px; }
.crumb { font-size: 0.85rem; font-weight: 700; color: var(--slate); display: inline-flex; align-items: center; gap: 6px; margin-bottom: 26px; }
.crumb:hover { color: var(--blue); }
.doc-hero .title-row { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.doc-hero .icon { width: 52px; height: 52px; border-radius: 15px; font-size: 1.5rem; display: flex; align-items: center; justify-content: center; }
.doc-hero h1 { font-size: clamp(1.9rem, 5vw, 2.7rem); font-weight: 800; overflow-wrap: anywhere; }
.doc-hero .tagline { color: var(--slate); font-size: 1rem; max-width: 720px; margin-top: 16px; }
.badges { display: flex; gap: 9px; flex-wrap: wrap; margin-top: 20px; align-items: center; }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.76rem; font-weight: 700; padding: 5px 13px; border-radius: 99px;
  background: var(--card); border: 1px solid var(--line); color: var(--slate);
}
.badge svg { width: 13px; height: 13px; flex-shrink: 0; stroke: currentColor; fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

/* Two-sided badges, the shape project READMEs already use (shields.io: a neutral
   label on the left, a coloured value on the right). Corners are a small radius
   rather than the full 99px pill - a two-tone split reads as one object only if
   the halves meet squarely. */
.badge.kv { padding: 0; border: 0; background: none; overflow: hidden; border-radius: 7px; align-items: stretch; gap: 0; }
.badge.kv .k, .badge.kv .v { display: inline-flex; align-items: center; gap: 5px; padding: 5px 10px; }
.badge.kv .k { background: #5b6472; color: #fff; font-weight: 600; }
.badge.kv .v { background: var(--slate); color: #fff; font-weight: 700; }
.badge.kv .v.blue    { background: var(--blue); }
.badge.kv .v.emerald { background: var(--emerald); }
.badge.kv .v.violet  { background: var(--violet); }
.badge.kv .v.amber   { background: var(--amber); }
.badge.kv .v.rose    { background: var(--rose); }
.badge.kv .v.cyan    { background: var(--cyan); }
.badge.kv svg { stroke: #fff; }
.badge b { color: var(--ink); }
.doc-hero .cta-row { justify-content: flex-start; margin-top: 26px; align-items: center; }
.btn.sm { padding: 10px 20px; font-size: 0.88rem; border-radius: 12px; }
.btn svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

.doc { padding: 8px 20px 56px; }
.doc h2 { font-size: 1.45rem; font-weight: 800; margin: 44px 0 16px; }
.doc h2:first-child { margin-top: 0; }
.doc h3 { font-size: 1.08rem; font-weight: 800; margin: 26px 0 10px; }
.doc p { color: var(--slate); margin-bottom: 14px; max-width: 780px; }
.doc p code, .doc li code, .doc td code {
  background: rgba(37, 99, 235, 0.08); color: #1d4ed8;
  padding: 1px 7px; border-radius: 6px; font-size: 0.86em;
}
.doc p code.chip-gray { background: rgba(15, 23, 42, 0.06); color: var(--slate); }
.doc ul { color: var(--slate); margin: 0 0 14px 4px; list-style: none; }
.doc ul li { padding-left: 26px; position: relative; margin-bottom: 9px; }
.doc ul li::before { content: ''; position: absolute; left: 4px; top: 9px; width: 8px; height: 8px; border-radius: 3px; background: linear-gradient(120deg, var(--emerald), var(--cyan)); }
.doc pre {
  background: #0b1120; color: #e2e8f0; border-radius: 16px; padding: 16px;
  font-size: 0.84rem; line-height: 1.65; overflow-x: auto; margin: 0 0 20px;
  box-shadow: var(--shadow);
}
.doc pre .cm { color: #64748b; }
.doc pre .k { color: #34d399; }
.doc pre .s { color: #7dd3fc; }
/* Copy-to-clipboard button overlaid on a .doc pre, wrapped in .code-block */
.code-block { position: relative; margin: 0 0 20px; }
.code-block pre { margin: 0; padding-right: 46px; }
.copy-btn {
  position: absolute; top: 10px; right: 10px; width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center; padding: 0;
  background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 7px; color: #94a3b8; cursor: pointer; transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.copy-btn:hover { background: rgba(255, 255, 255, 0.14); color: #e2e8f0; }
.copy-btn svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.copy-btn.copied { color: var(--emerald); border-color: rgba(16, 185, 129, 0.4); }
/* GitHub / npm icons merged into the .badges row: smaller than the hero variant */
.badges .gh {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px; background: linear-gradient(135deg, #1e293b, var(--ink));
  color: #fff; border-radius: 50%; transition: transform 0.15s, box-shadow 0.15s;
}
.badges .gh:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(15, 23, 42, 0.3); }
.badges .gh svg { width: 13px; height: 13px; fill: currentColor; }
.badges .npmb { background: linear-gradient(135deg, var(--rose), #dc2626); }
.badges .npmb:hover { box-shadow: 0 6px 18px rgba(220, 38, 38, 0.4); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 16px; background: var(--card); box-shadow: var(--shadow); margin: 0 0 20px; }
.doc table { border-collapse: collapse; width: 100%; font-size: 0.88rem; }
.doc th { text-align: left; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); padding: 10px 12px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.doc td { padding: 10px 12px; border-bottom: 1px solid var(--line); color: var(--slate); vertical-align: top; }
.doc tr:last-child td { border-bottom: none; }
.doc td:first-child { white-space: nowrap; font-weight: 600; color: var(--ink); }
.callout {
  display: flex; gap: 14px; background: rgba(6, 182, 212, 0.07);
  border: 1px solid rgba(6, 182, 212, 0.22); border-radius: 16px;
  padding: 14px 16px; margin: 0 0 20px; font-size: 0.92rem; color: var(--slate);
}
.callout .ico { flex-shrink: 0; color: var(--cyan); }
.callout .ico svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.callout b { color: var(--ink); }
.callout.warn { background: rgba(236, 72, 153, 0.08); border-color: rgba(236, 72, 153, 0.28); }
.callout.warn .ico { color: var(--rose); }

.chat-ico { width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; vertical-align: -3px; margin-right: 4px; }

/* ── Motion & modern touches ── */
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
.fade-1, .fade-2, .fade-3, .fade-4 { animation: fadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) both; }
.fade-2 { animation-delay: 0.12s; }
.fade-3 { animation-delay: 0.24s; }
.fade-4 { animation-delay: 0.36s; }
@media (prefers-reduced-motion: reduce) {
  .fade-1, .fade-2, .fade-3, .fade-4 { animation: none; }
}
.dot {
  display: inline-block; width: 8px; height: 8px; border-radius: 50%;
  background: var(--emerald); animation: pulse 1.8s ease-in-out infinite; flex-shrink: 0;
}

/* Glow blobs behind the hero. On phones the hero spans the full viewport, so
   clip the blobs' horizontal bleed there - otherwise they widen the page. */
.hero { position: relative; overflow-x: clip; }
.hero .blob {
  position: absolute; border-radius: 50%; filter: blur(70px); z-index: -1; pointer-events: none;
}
.hero .blob.b1 { width: 380px; height: 380px; top: -60px; left: -120px; background: rgba(6, 182, 212, 0.18); }
.hero .blob.b2 { width: 320px; height: 320px; top: 40px; right: -100px; background: rgba(139, 92, 246, 0.14); }
.hero .blob.b3 { width: 260px; height: 260px; bottom: -120px; left: 38%; background: rgba(16, 185, 129, 0.16); }

/* Hero terminal mock */
.term {
  max-width: 760px; margin: 40px auto 0; text-align: left;
  background: #0b1120; border-radius: 18px; overflow: hidden;
  box-shadow: 0 24px 64px rgba(15, 23, 42, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.06);
}
.term .bar {
  display: flex; align-items: center; gap: 7px; padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04); border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.term .bar i { width: 11px; height: 11px; border-radius: 50%; }
.term .bar i:nth-child(1) { background: #f87171; }
.term .bar i:nth-child(2) { background: #fbbf24; }
.term .bar i:nth-child(3) { background: #34d399; }
.term .bar span { margin-left: 8px; font-family: 'JetBrains Mono', monospace; font-size: 0.72rem; color: #64748b; }
.term pre {
  padding: 14px 16px; font-size: 0.74rem; line-height: 1.75; color: #e2e8f0;
  overflow-x: auto; font-family: 'JetBrains Mono', monospace;
}
.term .p { color: #34d399; }
.term .c { color: #7dd3fc; }
.term .d { color: #64748b; }
.term .w { color: #fbbf24; }

/* Card accent bar on hover */
.card { position: relative; overflow: hidden; }
.card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--cyan), var(--emerald));
  opacity: 0; transition: opacity 0.2s;
}
.card:hover::before { opacity: 1; }

/* ── Contact ── */
/* ── Coming soon / subscribe ── */
.subscribe { text-align: center; padding-bottom: 16px; }
.subscribe .kicker { font-size: 0.78rem; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 12px; display: block; }
.subscribe h2 { font-size: 1.9rem; margin-bottom: 10px; }
.subscribe > .wrap > p { color: var(--slate); max-width: 520px; margin: 0 auto 24px; }
.subscribe-form { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; max-width: 520px; margin: 0 auto; }
.subscribe-form input[type="email"] {
  flex: 1; min-width: 220px; font-size: 0.95rem; font-family: inherit; color: var(--ink);
  padding: 13px 18px; border-radius: 10px; border: 1.5px solid var(--line); background: var(--card);
}
.subscribe-form input[type="email"]:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15); }
.subscribe-form input[name="website"] { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.subscribe-form .btn.primary { background: transparent; color: #059669; border: 1.5px solid rgba(16, 185, 129, 0.45); box-shadow: none; cursor: pointer; font-family: inherit; }
.subscribe-form .btn.primary:hover { background: rgba(16, 185, 129, 0.1); border-color: var(--emerald); box-shadow: 0 8px 24px rgba(16, 185, 129, 0.18); }
.subscribe-form .btn[disabled] { opacity: 0.6; cursor: default; transform: none; }
.subscribe-msg { min-height: 1.4em; margin-top: 44px; font-size: 1.05rem; font-weight: 700; }
.subscribe-msg.ok { color: var(--emerald); }
.subscribe-msg.err { color: var(--rose); }

/* ── Pre-footer (contact line, above the footer's border) ── */
.pre-foot { display: flex; align-items: baseline; justify-content: center; gap: 8px; padding-top: 40px; }
.pre-foot a { font-size: 0.95rem; font-weight: 700; color: var(--blue); }
.pre-foot a:hover { color: var(--brand); }
.foot-note { font-size: 0.88rem; font-weight: 600; color: var(--slate); }

/* ── Footer ── */
footer { border-top: 1px solid var(--line); padding: 44px 0 52px; margin-top: 40px; }
.foot { display: flex; align-items: center; justify-content: center; gap: 24px; flex-wrap: wrap; }
.foot a { font-size: 0.88rem; font-weight: 600; color: var(--muted); }
.foot a:hover { color: var(--blue); }
.foot .copy { width: 100%; font-size: 0.8rem; color: var(--muted); margin-top: 16px; text-align: center; }

/* ── ≥641px: two-column card grids, and the schematic appears ── */
@media (min-width: 641px) {
  .grid.cols-3, .grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
  .flow .diagram { display: block; }
  .steps { margin-top: 28px; }
}

/* ── ≥761px: tablet/desktop spacing & full nav ── */
@media (min-width: 761px) {
  .wrap { padding: 0 24px; }
  .nav-inner { gap: 28px; padding: 0 28px; }
  .nav a.link { display: inline; }
  .nav .npmb { margin-left: -18px; }
  .hero { padding: 64px 24px; overflow-x: visible; }
  .hero .sub { font-size: 1.18rem; }
  .term { margin: 52px auto 0; }
  .term pre { padding: 18px 22px; font-size: 0.8rem; }
  section { padding: 72px 0; }
  .sec-head { margin-bottom: 48px; }
  .grid { gap: 22px; }
  .card { padding: 28px; }
  .flow { padding: 40px; }
  .steps { margin-top: 40px; }
  .doc-hero { padding: 64px 24px 40px; }
  .doc-hero .icon { width: 64px; height: 64px; border-radius: 18px; font-size: 1.9rem; }
  .doc-hero .tagline { font-size: 1.1rem; }
  .doc { padding: 8px 24px 72px; }
  .doc pre { padding: 20px 24px; }
  .doc th { padding: 12px 18px; }
  .doc td { padding: 11px 18px; }
  .callout { padding: 16px 20px; }
}

/* ── ≥901px: three-column card grid ── */
@media (min-width: 901px) {
  .grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
}