:root{
  --slate:#11131a; --card:#171a24; --card2:#1c2030; --rule:#262b3a;
  --paper:#eef1f6; --faint:#97a0b5; --tang:#f97316; --tang2:#fb923c; --ember:#3a1f0a;
  --yes:#4ade80; --no:#f87171; --warn:#facc15;
  --code:'Roboto Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --face:'Archivo',system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--slate);color:var(--paper);font-family:var(--face);line-height:1.64;
  -webkit-font-smoothing:antialiased;font-size:16.5px}
.pfct-shell{max-width:1060px;margin:0 auto;padding:0 22px}
a{color:var(--tang2);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{font-family:var(--face);line-height:1.15;letter-spacing:-.018em;font-weight:700}
h2{font-size:clamp(1.32rem,2.5vw,1.74rem);margin:0 0 .5em}
h3{font-size:1.07rem;margin:1.45em 0 .35em;color:#fff;font-weight:600}
.pfct-dim{color:var(--faint)}
.pfct-slab{padding:44px 0}
.pfct-slab + .pfct-slab{border-top:1px solid var(--rule)}
.pfct-overline{font-family:var(--code);font-size:.72rem;letter-spacing:.24em;text-transform:uppercase;
  color:var(--tang);margin-bottom:14px}
/* top bar */
.pfct-top{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  gap:18px;padding:13px 22px;background:rgba(17,19,26,.88);backdrop-filter:blur(9px);
  border-bottom:1px solid var(--rule)}
.pfct-brand{display:flex;align-items:center;gap:10px;font-family:var(--code);font-weight:700;color:#fff;
  font-size:.93rem;letter-spacing:-.01em}
.pfct-brand svg{width:21px;height:21px;display:block}
.pfct-nav{display:flex;gap:21px;list-style:none;margin:0;padding:0;font-size:.88rem}
.pfct-nav a{color:var(--faint)}
.pfct-nav a:hover{color:var(--paper);text-decoration:none}
.pfct-act{border:1px solid var(--tang);color:var(--tang2)!important;padding:7px 14px;border-radius:8px;
  font-family:var(--code);font-size:.79rem}
.pfct-act:hover{background:var(--ember);text-decoration:none}
.pfct-hamb{display:none;background:none;border:0;cursor:pointer;width:30px;height:24px}
.pfct-hamb span{display:block;height:2px;background:var(--paper);margin:5px 0;border-radius:2px}
.pfct-sheet{display:none;flex-direction:column;gap:2px;padding:8px 22px 18px;border-bottom:1px solid var(--rule);
  background:var(--card)}
.pfct-sheet a{color:var(--paper);padding:10px 0;border-bottom:1px solid var(--rule);font-size:.95rem}
.pfct-sheet.shown{display:flex}
/* hero */
.pfct-lede{padding:60px 0 42px}
.pfct-flag{font-family:var(--code);font-size:.74rem;letter-spacing:.2em;text-transform:uppercase;color:var(--tang)}
.pfct-lede h1{font-size:clamp(2rem,4.6vw,3.05rem);margin:.32em 0 .26em;color:#fff;font-weight:700}
.pfct-standfirst{font-size:1.12rem;color:#d4dae6;max-width:64ch}
.pfct-readline{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;font-family:var(--code);font-size:.82rem}
.pfct-pill{border:1px solid var(--rule);background:var(--card);border-radius:8px;padding:8px 12px;color:var(--faint)}
.pfct-pill b{color:var(--tang2);font-weight:600}
.pfct-go{display:inline-block;margin-top:26px;background:var(--tang);color:#21130a;font-weight:700;
  font-family:var(--code);padding:12px 21px;border-radius:9px;font-size:.92rem}
.pfct-go:hover{background:var(--tang2);text-decoration:none}
.pfct-runover{font-size:1.06rem;color:#d6dce8}
.pfct-slat{background:var(--card);border:1px solid var(--rule);border-radius:13px;padding:22px 25px;margin:18px 0}
.pfct-slat.pfct-lit{border-color:#3a2a18;box-shadow:0 0 0 1px rgba(249,115,22,.10) inset}
.pfct-cols{display:grid;gap:16px}
@media(min-width:720px){.pfct-c3{grid-template-columns:repeat(3,1fr)}.pfct-c2{grid-template-columns:1fr 1fr}}
.pfct-tile{background:var(--card);border:1px solid var(--rule);border-radius:11px;padding:18px}
.pfct-tile h3{margin-top:0}
.pfct-badge{font-family:var(--code);font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--tang)}
ul.pfct-ticks{list-style:none;padding:0;margin:14px 0}
ul.pfct-ticks li{padding:9px 0 9px 27px;position:relative;border-bottom:1px solid var(--rule);color:#d0d7e3}
ul.pfct-ticks li:before{content:"\2713";position:absolute;left:5px;color:var(--tang);font-family:var(--code);font-weight:700}
ul.pfct-nos{list-style:none;padding:0;margin:14px 0}
ul.pfct-nos li{padding:9px 0 9px 27px;position:relative;border-bottom:1px solid var(--rule);color:#d0d7e3}
ul.pfct-nos li:before{content:"\2715";position:absolute;left:5px;color:var(--no);font-family:var(--code);font-weight:700}
.pfct-swipe{overflow-x:auto;margin:18px 0}
table{border-collapse:collapse;width:100%;font-size:.9rem;min-width:520px}
th,td{padding:11px 13px;border-bottom:1px solid var(--rule);text-align:left}
th{font-family:var(--code);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
td .pfct-gain{color:var(--yes);font-family:var(--code)}
.pfct-trail{font-family:var(--code);font-size:.76rem;color:var(--faint);padding:16px 0 0}
.pfct-trail a{color:var(--faint)}
.pfct-trail .pfct-dot{opacity:.5;margin:0 6px}
.pfct-subhead{font-size:1.1rem;color:#d4dae6;max-width:66ch;margin:.4em 0 0}
.pfct-rich h3{color:var(--tang2)}
.pfct-sidebar{font-family:var(--code);font-size:.82rem;color:var(--faint);border-left:2px solid var(--tang);
  padding:4px 0 4px 14px;margin:16px 0}
.pfct-foot{border-top:1px solid var(--rule);background:var(--card2);margin-top:30px;padding:40px 0 30px}
.pfct-foot .pfct-grid{display:grid;gap:22px}
@media(min-width:720px){.pfct-foot .pfct-grid{grid-template-columns:2fr 1fr 1fr 1fr}}
.pfct-foot a{color:var(--faint);display:block;padding:3px 0}
.pfct-foot a:hover{color:var(--tang2)}
.pfct-foot .pfct-cap{color:#fff;font-family:var(--code);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;margin-bottom:9px}
.pfct-smallprint{color:#6c7689;font-size:.82rem;margin-top:24px;border-top:1px solid var(--rule);padding-top:16px}
/* numbered step card - a clipboard-row look, distinct from .pfct-sidebar */
.pfct-steprow{background:var(--card2);border:1px solid var(--rule);border-left:3px solid var(--tang);
  border-radius:0 10px 10px 0;padding:18px 20px;margin:20px 0}
.pfct-steprow .pfct-badge{margin-bottom:10px}
.pfct-steprow code,code{font-family:var(--code);font-size:.86em;background:#0d1018;border:1px solid var(--rule);
  border-radius:4px;padding:1px 6px;color:var(--tang2);word-break:break-word}
.pfct-steprow ol{margin:0;padding-left:20px}
.pfct-steprow ol li{padding:6px 0;color:#d0d7e3}
.pfct-steprow ol li b{color:#fff}
/* inline diagram frame */
figure.pfct-sketch{margin:24px 0;background:var(--card);border:1px solid var(--rule);border-radius:13px;
  padding:18px 18px 12px}
figure.pfct-sketch svg{display:block;width:100%;height:auto;max-width:760px;margin:0 auto}
figure.pfct-sketch figcaption{font-family:var(--code);font-size:.78rem;color:var(--faint);
  text-align:center;margin-top:10px}
.pfct-sketch .pfct-s-box{fill:#1c2030;stroke:#3a2a18;stroke-width:1.2}
.pfct-sketch .pfct-s-edge{stroke:var(--tang);stroke-width:1.6;fill:none}
.pfct-sketch .pfct-s-h{font-family:'Roboto Mono',monospace;font-size:11.5px;fill:#fff;font-weight:600}
.pfct-sketch .pfct-s-t{font-family:'Roboto Mono',monospace;font-size:9.5px;fill:#97a0b5}
.pfct-sketch .pfct-s-ax{font-family:'Roboto Mono',monospace;font-size:10px;fill:#97a0b5}
.pfct-sketch .pfct-s-yes{fill:#4ade80;font-family:'Roboto Mono',monospace;font-size:13px;font-weight:700}
.pfct-sketch .pfct-s-no{fill:#f87171;font-family:'Roboto Mono',monospace;font-size:13px;font-weight:700}
/* "next reads" block at the foot of a leaf page */
.pfct-onward{margin:30px 0 0;border-top:1px solid var(--rule);padding-top:20px}
.pfct-onward .pfct-cap{font-family:var(--code);font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--tang);margin-bottom:12px}
.pfct-onward .pfct-set{display:grid;gap:10px}
@media(min-width:620px){.pfct-onward .pfct-set{grid-template-columns:1fr 1fr}}
.pfct-onward a.pfct-ln{display:block;border:1px solid var(--rule);border-radius:9px;padding:12px 14px;
  background:var(--card);color:var(--paper)}
.pfct-onward a.pfct-ln:hover{border-color:#3a2a18;text-decoration:none}
.pfct-onward a.pfct-ln b{color:var(--tang2);display:block;font-size:.95rem}
.pfct-onward a.pfct-ln span{color:var(--faint);font-size:.84rem}
.pfct-gradecell{font-family:var(--code);color:var(--tang2)}
@media(max-width:719px){.pfct-nav{display:none}.pfct-hamb{display:block}}

/* a11y + responsive polish */
:focus-visible{outline:2px solid currentColor;outline-offset:3px;border-radius:3px}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation-duration:.01ms !important;transition-duration:.01ms !important}}
@media(max-width:719px){table{min-width:0}th,td{padding:8px 10px}}