/* ═══════════════════════════════════════════════════════════════
   Site pages (About, Contact) — the category hubs' design language
   (blueprint hero, mono labels, quiet cards) for pages that are
   prose, not tool grids. Loaded AFTER site.css; every rule is
   scoped under .pg so nothing here can reach a tool page.
   ═══════════════════════════════════════════════════════════════ */

.pg {
  --pg-mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --pg-line: rgba(120, 150, 210, .09);
  --pg-ink: #aab4c8;
  box-sizing: border-box;
  max-width: 1120px;
  margin: 0 auto;
  padding: 72px 24px 24px;
  color: var(--text);
}
.pg *, .pg *::before, .pg *::after { box-sizing: border-box; }
@media (max-width: 600px) { .pg { padding: 64px 16px 16px; } }

/* ── Hero ─────────────────────────────────────────────────────── */
.pg-hero {
  position: relative;
  margin: 0 0 36px;
  padding: 44px 36px 34px;
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(79,142,247,.16) 0%, transparent 55%),
    radial-gradient(90% 80% at 0% 100%, rgba(255,140,66,.10) 0%, transparent 60%),
    linear-gradient(var(--pg-line) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(90deg, var(--pg-line) 1px, transparent 1px) 0 0 / 28px 28px,
    var(--surface);
}
.pg-hero::after {                 /* engineering-drawing corner ticks */
  content: "";
  position: absolute; inset: 12px;
  pointer-events: none;
  background:
    linear-gradient(var(--text-dim), var(--text-dim)) 0 0 / 14px 1px no-repeat,
    linear-gradient(var(--text-dim), var(--text-dim)) 0 0 / 1px 14px no-repeat,
    linear-gradient(var(--text-dim), var(--text-dim)) 100% 100% / 14px 1px no-repeat,
    linear-gradient(var(--text-dim), var(--text-dim)) 100% 100% / 1px 14px no-repeat;
  opacity: .55;
}
.pg-hero > * { position: relative; z-index: 1; }
.pg-crumbs {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  margin: 0;
  font: 600 .72rem/1 var(--pg-mono);
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--text-dim);
}
.pg-crumbs a { color: var(--accent); text-decoration: none; padding: 6px 0; }
.pg-crumbs a:hover { text-decoration: underline; }
.pg-crumbs [aria-current] { color: #b9c3d8; }
.pg-hero h1 {
  margin: 14px 0 12px;
  font-size: clamp(1.8rem, 4.4vw, 2.8rem);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -.02em;
  max-width: 20ch;
}
.pg-hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, #4f8ef7 0%, #7fb6ff 45%, #ffb07a 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.pg-lede { max-width: 62ch; margin: 0; color: var(--pg-ink); font-size: 1.04rem; line-height: 1.65; }
.pg-hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0 0; }
.pg-stats {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px;
  list-style: none; margin: 28px 0 0; padding: 22px 0 0;
  border-top: 1px dashed var(--border);
}
.pg-stats li { display: flex; flex-direction: column; gap: 4px; }
.pg-stats b { font: 800 1.7rem/1 var(--pg-mono); color: var(--text); letter-spacing: -.02em; }
.pg-stats span { color: var(--text-dim); font-size: .82rem; line-height: 1.35; }
@media (max-width: 640px) {
  .pg-hero { padding: 32px 20px 26px; }
  .pg-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 18px; }
}

/* ── Buttons ──────────────────────────────────────────────────── */
.pg-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 18px;
  border-radius: 10px; border: 1px solid var(--border);
  background: transparent; color: var(--text);
  font-family: inherit; font-size: .92rem; font-weight: 600; line-height: 1;
  text-decoration: none; cursor: pointer;
  transition: border-color .15s, background .15s, transform .1s;
}
.pg-btn:hover { border-color: var(--accent); }
.pg-btn:active { transform: scale(.98); }
.pg-btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.pg-btn.primary:hover { filter: brightness(1.1); }
.pg-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ── Sections ─────────────────────────────────────────────────── */
.pg-section { margin: 0 0 44px; scroll-margin-top: 72px; }
.pg-head { display: flex; align-items: baseline; gap: 14px; margin: 0 0 16px; }
.pg-code {
  flex: none;
  font: 700 .7rem/1 var(--pg-mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent);
}
.pg-head h2 { margin: 0; font-size: clamp(1.25rem, 2.6vw, 1.5rem); font-weight: 750; letter-spacing: -.01em; }
.pg-prose { max-width: 72ch; }
.pg-prose p { margin: 0 0 14px; color: var(--pg-ink); line-height: 1.75; font-size: .98rem; }
.pg-prose p:last-child { margin-bottom: 0; }
.pg-prose a, .pg-link { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.pg-prose strong { color: var(--text); }

/* ── Card grids ───────────────────────────────────────────────── */
.pg-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.pg-card {
  position: relative;
  padding: 20px 20px 18px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
}
.pg-card h3 { margin: 0 0 6px; font-size: 1rem; font-weight: 700; line-height: 1.3; }
.pg-card p { margin: 0; color: var(--text-dim); font-size: .88rem; line-height: 1.6; }
.pg-card .pg-ico {
  display: grid; place-items: center;
  width: 38px; height: 38px; margin: 0 0 12px;
  border-radius: 10px;
  background: var(--accent-lo, rgba(79,142,247,.15));
  color: var(--accent);
}
.pg-card .pg-ico svg { width: 20px; height: 20px; }
a.pg-card { display: block; color: inherit; text-decoration: none; transition: border-color .15s, transform .15s; }
a.pg-card:hover, a.pg-card:focus-visible { border-color: var(--accent); transform: translateY(-2px); }
a.pg-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.pg-card .go { display: inline-block; margin: 12px 0 0; color: var(--accent); font-weight: 600; font-size: .86rem; }

/* Subject hubs: icon + name + one line */
.pg-hubs { grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
a.pg-card.pg-hub, .pg-hub { display: flex; gap: 14px; align-items: flex-start; padding: 16px; }
.pg-hub img { flex: none; width: 44px; height: 44px; }
.pg-hub h3 { font-size: .95rem; margin: 2px 0 4px; }
.pg-hub p { font-size: .82rem; line-height: 1.45; }

/* Numbered process */
.pg-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); counter-reset: step; }
.pg-steps li {
  counter-increment: step;
  padding: 18px 18px 16px;
  border: 1px solid var(--border); border-radius: 14px;
  background: var(--surface);
}
.pg-steps li::before {
  content: counter(step, decimal-leading-zero);
  display: block; margin: 0 0 10px;
  font: 800 1.1rem/1 var(--pg-mono); color: var(--accent);
}
.pg-steps b { display: block; margin: 0 0 6px; color: var(--text); font-size: .95rem; }
.pg-steps span { display: block; color: var(--text-dim); font-size: .86rem; line-height: 1.6; }

/* ── Founder card ─────────────────────────────────────────────── */
.pg-person {
  display: grid; grid-template-columns: 148px 1fr; gap: 28px; align-items: center;
  padding: 26px;
  border: 1px solid var(--border); border-radius: 18px;
  background:
    radial-gradient(80% 120% at 0% 0%, rgba(79,142,247,.10) 0%, transparent 60%),
    var(--surface);
}
.pg-person img { width: 148px; height: 148px; border-radius: 16px; object-fit: cover; border: 1px solid var(--border); }
.pg-role { font: 700 .7rem/1 var(--pg-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
.pg-person h3 { margin: 8px 0 4px; font-size: 1.35rem; font-weight: 800; }
.pg-person .pg-title { margin: 0 0 2px; color: var(--text); font-size: .95rem; }
.pg-person .pg-degree { margin: 0 0 14px; color: var(--text-dim); font-size: .86rem; }
.pg-tags { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0 0 16px; padding: 0; }
.pg-tags li { padding: 4px 10px; border: 1px solid var(--border); border-radius: 999px; font-size: .76rem; color: #b9c3d8; }
@media (max-width: 640px) {
  .pg-person { grid-template-columns: 1fr; text-align: center; padding: 22px 18px; gap: 16px; }
  .pg-person img { margin: 0 auto; width: 120px; height: 120px; }
  .pg-tags { justify-content: center; }
}

/* ── FAQ ──────────────────────────────────────────────────────── */
.pg-faq { max-width: 80ch; }
.pg-faq details { border-bottom: 1px solid var(--border); }
.pg-faq summary {
  display: flex; justify-content: space-between; gap: 16px; align-items: center;
  min-height: 52px; padding: 12px 0;
  cursor: pointer; list-style: none;
  font-weight: 650; color: var(--text);
}
.pg-faq summary::-webkit-details-marker { display: none; }
.pg-faq summary::after { content: "+"; font: 400 1.4rem/1 var(--pg-mono); color: var(--accent); transition: transform .2s; }
.pg-faq details[open] summary::after { transform: rotate(45deg); }
.pg-faq summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.pg-faq details p { margin: 0 0 16px; color: var(--pg-ink); line-height: 1.7; font-size: .95rem; }

/* ── Call to action band ──────────────────────────────────────── */
.pg-cta {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px;
  margin: 0 0 40px; padding: 26px 28px;
  border: 1px solid var(--border); border-radius: 18px;
  background:
    linear-gradient(100deg, rgba(79,142,247,.14), rgba(255,140,66,.08)),
    var(--surface);
}
.pg-cta h2 { margin: 0 0 4px; font-size: 1.25rem; font-weight: 800; }
.pg-cta p { margin: 0; color: var(--pg-ink); font-size: .92rem; }
.pg-cta .pg-hero-actions { margin: 0; }

.pg-updated { margin: 0 0 8px; font-size: .78rem; color: var(--text-dim); }

/* ── Contact layout ───────────────────────────────────────────── */
.pg-routes { grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 0 0 36px; }
@media (max-width: 860px) { .pg-routes { grid-template-columns: 1fr; } }
.pg-kbd {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 9px; border-radius: 7px;
  border: 1px solid var(--border); background: var(--bg);
  font-size: .8rem; color: var(--text); white-space: nowrap;
}
.pg-contact { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 20px; align-items: start; margin: 0 0 44px; }
@media (max-width: 900px) { .pg-contact { grid-template-columns: 1fr; } }
.pg-form { padding: 26px; scroll-margin-top: 72px; }
.pg-form h2 { margin: 0 0 6px; font-size: 1.25rem; font-weight: 800; }
.pg-form > p { margin: 0 0 20px; color: var(--text-dim); font-size: .9rem; line-height: 1.6; }
@media (max-width: 600px) { .pg-form { padding: 20px 16px; } }
.pg-aside { display: grid; gap: 14px; }
.pg-timeline { list-style: none; margin: 10px 0 0; padding: 0; }
.pg-timeline li { position: relative; padding: 0 0 16px 28px; color: var(--text-dim); font-size: .87rem; line-height: 1.55; }
.pg-timeline li:last-child { padding-bottom: 0; }
.pg-timeline li::before {
  content: ""; position: absolute; left: 4px; top: 5px;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 0 4px var(--accent-lo, rgba(79,142,247,.18));
}
.pg-timeline li::after { content: ""; position: absolute; left: 8px; top: 19px; bottom: 2px; width: 2px; background: var(--border); }
.pg-timeline li:last-child::after { display: none; }
.pg-timeline b { color: var(--text); }
.pg-mail { font: 600 .95rem/1.4 var(--pg-mono); color: var(--accent); word-break: break-all; }

@media (prefers-reduced-motion: reduce) {
  .pg *, .pg *::before, .pg *::after { transition: none !important; }
}