:root {
  --ink:#0b0d12; --text:#3c4250; --mute:#6b7280; --line:#e6e8ec; --line2:#d5d9e0;
  --alt:#f7f7f5; --o:#e8552a; --otint:#fff1ec; --oline:#f6cdbd;
}
* { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; }
body { font-family:"Inter",system-ui,-apple-system,sans-serif; color:var(--ink); background:#fff; font-size:17px; line-height:1.6; -webkit-font-smoothing:antialiased; overflow-x:hidden; }
a { color:inherit; text-decoration:none; }
img { display:block; max-width:100%; }
::selection { background:var(--o); color:#fff; }
.wrap { max-width:960px; margin:0 auto; padding:0 28px; }

/* nav */
nav.top { position:sticky; top:0; z-index:50; background:rgba(255,255,255,.94); backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px); border-bottom:1px solid var(--line); }
nav.top .wrap { max-width:1200px; display:flex; align-items:center; justify-content:space-between; height:66px; }
.logo img { height:24px; width:auto; }
.links { display:flex; gap:26px; align-items:center; }
.links a { font-size:.92rem; font-weight:500; color:var(--text); }
.links a:hover { color:var(--ink); }

.btn { display:inline-flex; align-items:center; gap:10px; font-weight:600; font-size:.97rem; padding:13px 20px; border-radius:8px; border:1px solid transparent; white-space:nowrap; transition:transform .2s, box-shadow .2s, border-color .2s; }
.btn-p { background:var(--ink); color:#fff; }
.btn-p .arw { color:var(--o); transition:transform .2s; }
.btn-p:hover { transform:translateY(-1px); box-shadow:0 10px 24px -12px rgba(11,13,18,.55); }
.btn-p:hover .arw { transform:translateX(3px); }
.btn-s { background:#fff; color:var(--ink); border-color:var(--line2); }
.btn-s:hover { border-color:var(--ink); }
.links a.btn { color:#fff; padding:9px 16px; font-size:.88rem; }

/* header */
.hero { padding:36px 0 40px; border-bottom:1px solid var(--line); }
.back { display:inline-flex; align-items:center; gap:6px; font-size:.9rem; font-weight:600; color:var(--mute); }
.back:hover { color:var(--ink); }
.eyebrow { display:block; margin-top:28px; font-size:.74rem; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color:var(--o); }
h1 { font-size:clamp(2.1rem,5.6vw,3.5rem); font-weight:800; letter-spacing:-.045em; line-height:1.05; margin:10px 0 12px; }
.kind { font-size:.95rem; font-weight:600; color:var(--mute); }
.lede { font-size:clamp(1.12rem,2.3vw,1.4rem); color:var(--ink); max-width:32em; margin-top:14px; font-weight:500; letter-spacing:-.01em; line-height:1.45; }
.kpis { display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:12px; margin-top:30px; }
.kpi { background:var(--alt); border:1px solid var(--line); border-radius:14px; padding:18px 18px 16px; }
.kpi b { display:block; font-size:clamp(1.6rem,3.6vw,2.2rem); font-weight:800; letter-spacing:-.04em; line-height:1.05; }
.kpi span { display:block; margin-top:6px; font-size:.88rem; color:var(--mute); }
.kpi.o { background:var(--otint); border-color:var(--oline); }
.kpi.o b { color:var(--o); }
.badge { display:inline-block; margin-left:8px; vertical-align:middle; font-size:.68rem; font-weight:700; letter-spacing:.1em; text-transform:uppercase; color:var(--text); background:var(--alt); border:1px solid var(--line); border-radius:999px; padding:3px 9px; }

/* sections */
section.s { padding:52px 0; border-bottom:1px solid var(--line); }
h2 { font-size:clamp(1.35rem,2.6vw,1.75rem); font-weight:700; letter-spacing:-.03em; line-height:1.2; margin-bottom:18px; }
.intro { color:var(--text); margin:-6px 0 20px; max-width:40em; }

.tldr { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.tl { border:1px solid var(--line); border-radius:14px; padding:18px 20px; }
.tl small { display:block; font-size:.72rem; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--mute); margin-bottom:6px; }
.tl p { font-size:1rem; }
.tl.o { background:var(--otint); border-color:var(--oline); }
.tl.o small { color:var(--o); }

/* before / after flow */
.ba { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.col { border:1px solid var(--line); border-radius:16px; padding:22px 22px 20px; }
.col.after { border-color:var(--o); background:var(--otint); }
.col h3 { font-size:.78rem; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--mute); margin-bottom:18px; }
.col.after h3 { color:var(--o); }
.fv { list-style:none; counter-reset:s; }
.fv li { position:relative; padding:2px 0 20px 42px; font-weight:500; min-height:30px; }
.fv li:last-child { padding-bottom:0; }
.fv li::before { counter-increment:s; content:counter(s); position:absolute; left:0; top:0; width:28px; height:28px; border-radius:50%; background:#fff; border:1.5px solid var(--line2); display:grid; place-items:center; font-size:.78rem; font-weight:700; color:var(--mute); }
.fv li::after { content:""; position:absolute; left:13.5px; top:31px; bottom:3px; width:1.5px; background:var(--line2); }
.fv li:last-child::after { display:none; }
.col.after .fv li::before { border-color:var(--o); color:var(--o); }
.col.after .fv li::after { background:#f3b39c; }
.col .end { margin-top:18px; padding-top:14px; border-top:1px dashed var(--line2); font-size:.92rem; color:var(--mute); }
.col.after .end { color:var(--o); border-color:#f3b39c; font-weight:600; }

/* checklist */
.checks { list-style:none; display:grid; grid-template-columns:1fr 1fr; gap:10px; }
.checks li { position:relative; padding:14px 16px 14px 48px; border:1px solid var(--line); border-radius:12px; font-weight:500; }
.checks li::before { content:""; position:absolute; left:16px; top:15px; width:20px; height:20px; border-radius:50%; background:var(--otint); border:1.5px solid var(--o); }
.checks li::after { content:""; position:absolute; left:23px; top:19px; width:5px; height:9px; border:solid var(--o); border-width:0 2px 2px 0; transform:rotate(45deg); }
.chips { display:flex; flex-wrap:wrap; align-items:center; gap:8px; margin-top:20px; }
.chips small { font-size:.72rem; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--mute); margin-right:4px; }
.chips span { font-size:.86rem; font-weight:600; border:1px solid var(--line2); border-radius:999px; padding:5px 12px; color:var(--text); }

/* meaning */
.meaning { display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:12px; }
.mean { border:1px solid var(--line); border-radius:14px; padding:20px; }
.mean b { display:block; font-size:clamp(1.6rem,3.4vw,2rem); font-weight:800; letter-spacing:-.04em; line-height:1.1; }
.mean span { display:block; margin-top:6px; font-size:.92rem; color:var(--text); }
.note { margin-top:14px; font-size:.84rem; color:var(--mute); }

/* how we worked */
.steps { list-style:none; display:grid; grid-template-columns:repeat(4,1fr); gap:14px; }
.steps li { border-top:2px solid var(--ink); padding-top:14px; }
.steps li b { display:block; font-size:.8rem; color:var(--o); font-weight:700; margin-bottom:6px; }
.steps li strong { display:block; font-size:1rem; line-height:1.3; margin-bottom:4px; }
.steps li p { font-size:.93rem; color:var(--text); }

/* UK table */
.ukt { border:1px solid var(--line); border-radius:14px; overflow:hidden; }
.ukr { display:grid; grid-template-columns:1fr 2.2fr 1fr .9fr; gap:14px; padding:13px 16px; border-bottom:1px solid var(--line); font-size:.94rem; align-items:center; }
.ukr:last-child { border-bottom:0; }
.ukr.hd { background:var(--alt); font-size:.7rem; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--mute); }
.ukr b { font-weight:600; }
.ukr .w { color:var(--text); }
.ukr .h, .ukr .m { font-weight:700; white-space:nowrap; }
.ukr .m { color:var(--o); }
.ukr.tot { background:var(--otint); }

/* cta + prev/next */
.cta { padding:60px 0; text-align:center; border-bottom:1px solid var(--line); }
.cta h2 { font-size:clamp(1.7rem,4vw,2.5rem); letter-spacing:-.04em; max-width:20ch; margin:0 auto 12px; }
.cta p { color:var(--text); max-width:36em; margin:0 auto 26px; }
.pn { display:grid; grid-template-columns:1fr 1fr; gap:12px; padding:30px 0 56px; }
.pn a { border:1px solid var(--line); border-radius:14px; padding:16px 18px; transition:border-color .2s; }
.pn a:hover { border-color:var(--ink); }
.pn small { display:block; font-size:.72rem; letter-spacing:.12em; text-transform:uppercase; color:var(--mute); font-weight:700; }
.pn strong { display:block; margin-top:4px; font-size:1rem; }
.pn .nx { text-align:right; }

footer { border-top:1px solid var(--line); padding:30px 0 36px; }
footer .wrap { max-width:1200px; display:flex; justify-content:space-between; align-items:center; gap:18px; flex-wrap:wrap; }
footer img { height:22px; width:auto; }
footer .fl { display:flex; gap:22px; flex-wrap:wrap; }
footer .fl a { color:var(--text); font-size:.9rem; }
footer small { color:var(--mute); font-size:.85rem; }

@media (max-width:760px) {
  .wrap { padding:0 20px; }
  nav.top .wrap { height:60px; }
  .logo img { height:21px; }
  .links a:not(.btn) { display:none; }
  .hero { padding:24px 0 32px; }
  .eyebrow { margin-top:20px; }
  section.s { padding:40px 0; }
  .tldr, .ba, .checks { grid-template-columns:1fr; }
  .steps { grid-template-columns:1fr 1fr; gap:22px 14px; }
  .ukr.hd { display:none; }
  .ukr { grid-template-columns:1fr 1fr; gap:4px 12px; padding:14px 16px; }
  .ukr b, .ukr .w { grid-column:1 / -1; }
  .ukr .m { text-align:right; }
  .pn { grid-template-columns:1fr; }
  .pn .nx { text-align:left; }
  .cta { padding:48px 0; }
  .cta .btn { width:100%; justify-content:center; }
}
@media (max-width:420px) {
  .steps { grid-template-columns:1fr; }
  .kpis { grid-template-columns:1fr 1fr; }
  .kpis .kpi:last-child:nth-child(odd) { grid-column:1 / -1; }
}
@media (prefers-reduced-motion:reduce) { html { scroll-behavior:auto; } }

/* ---- in-depth sections ---- */
.toc { display:flex; flex-wrap:wrap; gap:8px; margin-top:26px; }
.toc a { font-size:.85rem; font-weight:600; color:var(--text); border:1px solid var(--line2); border-radius:999px; padding:6px 13px; background:#fff; transition:border-color .2s, color .2s; }
.toc a:hover { border-color:var(--ink); color:var(--ink); }
section.s { scroll-margin-top:70px; }
.big { font-size:clamp(1.1rem,2.1vw,1.28rem); line-height:1.55; max-width:40em; }
.attended { margin-top:20px; border-left:3px solid var(--o); padding:4px 0 4px 16px; }
.attended small { display:block; font-size:.72rem; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--mute); margin-bottom:4px; }
.pcs { display:grid; grid-template-columns:repeat(2,1fr); gap:14px; }
.pc { border:1px solid var(--line); border-radius:14px; padding:20px 20px 18px; display:flex; flex-direction:column; }
.pc .pnum { font-size:.78rem; font-weight:700; color:var(--o); }
.pc h3 { font-size:1.08rem; letter-spacing:-.02em; margin:6px 0 6px; }
.pc p { color:var(--text); font-size:.96rem; }
.pc .rep { margin-top:auto; padding-top:12px; border-top:1px dashed var(--line2); margin-top:14px; font-size:.9rem; color:var(--mute); }
.pc .rep small { display:block; font-size:.68rem; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--mute); margin-bottom:2px; }
.meaning.six { grid-template-columns:repeat(3,1fr); }
.faq { border-top:1px solid var(--line); }
.faq details { border-bottom:1px solid var(--line); }
.faq summary { list-style:none; cursor:pointer; padding:18px 36px 18px 0; font-weight:600; position:relative; }
.faq summary::-webkit-details-marker { display:none; }
.faq summary::after { content:"+"; position:absolute; right:4px; top:14px; font-size:1.4rem; font-weight:400; color:var(--o); transition:transform .2s; }
.faq details[open] summary::after { transform:rotate(45deg); }
.faq details p { color:var(--text); padding:0 0 18px; max-width:44em; }
.sims { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }
.sim { border:1px solid var(--line); border-radius:14px; padding:18px 18px 16px; display:flex; flex-direction:column; transition:border-color .2s, transform .2s, box-shadow .2s; }
.sim:hover { border-color:#c9ccd3; transform:translateY(-2px); box-shadow:0 14px 30px -22px rgba(11,13,18,.35); }
.sim small { font-size:.7rem; font-weight:700; letter-spacing:.12em; text-transform:uppercase; color:var(--mute); }
.sim strong { font-size:1.05rem; margin:6px 0 4px; }
.sim span { font-size:.92rem; color:var(--text); }
.sim em { font-style:normal; margin-top:12px; font-size:.88rem; font-weight:600; color:var(--o); }
@media (max-width:760px) {
  .toc { flex-wrap:nowrap; overflow-x:auto; scrollbar-width:none; margin-left:-20px; margin-right:-20px; padding:0 20px 2px; }
  .toc::-webkit-scrollbar { display:none; }
  .toc a { flex:none; }
  .pcs, .sims { grid-template-columns:1fr; }
  .meaning.six { grid-template-columns:1fr 1fr; }
}