/* All-on-6 Cost — ledger styles: paper, ink, money green */
:root{
  --paper:#fbfbf8;
  --white:#fff;
  --ink:#14213d;          /* headings, header */
  --text:#1f2933;
  --muted:#4a5563;
  --line:#d9dcd6;
  --rule:#e8eae4;
  --green:#1b6e45;        /* accent; white on it 6.3:1, on paper 6.0:1 */
  --green-d:#14583a;
  --green-soft:#e6f1ea;
  --amber:#8a5300;        /* warning text */
  --amber-bg:#fdf3df;
  --red:#a33221;
  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --wrap:1200px;
  --r:6px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--text);font:400 19px/1.65 var(--sans);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--green);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{color:var(--green-d);text-decoration-thickness:2px}
h1,h2,h3,h4{color:var(--ink);font-weight:600;line-height:1.15;margin:0 0 .5em;letter-spacing:-.015em}
h1{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:700}
h2{font-size:clamp(1.6rem,3.2vw,2.3rem)}
h3{font-size:1.3rem}
p{margin:0 0 1em}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.num,.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.eyebrow,.label{display:inline-block;font:600 .8rem/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--green);margin-bottom:.9rem}
.lead{font-size:1.2rem;color:var(--muted);max-width:46ch}
.src{font-size:.92rem;color:var(--muted)}
:focus-visible{outline:3px solid var(--green);outline-offset:3px}
.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:#fff;padding:10px 14px;z-index:99}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;min-height:52px;padding:0 1.4em;border-radius:var(--r);font:600 1rem/1.2 var(--sans);text-decoration:none;border:2px solid transparent;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.btn-cta{background:var(--green);color:#fff}.btn-cta:hover{background:var(--green-d);color:#fff}
.btn-line{border-color:var(--ink);color:var(--ink);background:transparent}.btn-line:hover{background:var(--ink);color:#fff}
.btn-ghost{border-color:#fff;color:#fff}.btn-ghost:hover{background:#fff;color:var(--ink)}

/* disclosure + header */
.disclose{background:var(--ink);color:#dfe5f0;font-size:.88rem}
.disclose .wrap{display:flex;gap:10px;align-items:center;padding-top:8px;padding-bottom:8px}
.disclose svg{width:18px;height:18px;flex:none}
.disclose a{color:#fff}
header.site{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
header.site .wrap{display:flex;align-items:center;gap:20px;min-height:76px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);margin-right:auto}
.logo b{display:block;font-size:1.2rem;line-height:1.1}
.logo small{display:block;font-size:.8rem;color:var(--muted)}
.mk{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:var(--r);background:var(--green);color:#fff;font:600 1rem/1 var(--mono);flex:none}
nav.main ul{display:flex;gap:4px;list-style:none;margin:0;padding:0}
nav.main a{display:block;padding:10px 12px;border-radius:var(--r);color:var(--ink);text-decoration:none;font-weight:500;font-size:.98rem}
nav.main a:hover{background:var(--green-soft)}
nav.main a[aria-current=page]{background:var(--green-soft);color:var(--green-d);font-weight:600}
.menu-btn{display:none;min-height:48px;padding:0 16px;border:2px solid var(--ink);background:#fff;border-radius:var(--r);font:600 1rem var(--sans);color:var(--ink)}
@media (max-width:1040px){
  .menu-btn{display:block}
  nav.main{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 12px 24px rgba(20,33,61,.08)}
  nav.main.open{display:block}
  nav.main ul{flex-direction:column;padding:10px 20px 18px}
  nav.main a{padding:14px 10px;font-size:1.05rem;border-bottom:1px solid var(--rule)}
}

/* hero */
.hero{background:var(--white);border-bottom:1px solid var(--line);padding:56px 0 64px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:48px;align-items:start}
.hero h1 em{font-style:normal;color:var(--green)}
.hero .lead{margin-bottom:1.4em}
.hero .actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.byline-h{display:flex;align-items:center;gap:12px;font-size:.95rem;color:var(--muted)}
.byline-h img{width:44px;height:44px;border-radius:50%;object-fit:cover}
.keyfig{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin-top:28px}
.keyfig div{background:var(--paper);padding:16px}
.keyfig b{display:block;font:600 1.5rem/1.1 var(--mono);color:var(--ink)}
.keyfig span{font-size:.86rem;color:var(--muted);line-height:1.35;display:block;margin-top:6px}
@media (max-width:960px){.hero-grid{grid-template-columns:1fr}.hero{padding:36px 0 44px}}
@media (max-width:520px){.keyfig{grid-template-columns:1fr}}

/* calculator */
.calc{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:0;background:var(--white);border:2px solid var(--ink);border-radius:10px;overflow:hidden}
.calc fieldset{border:0;border-bottom:1px solid var(--rule);margin:0;padding:20px 22px}
.calc fieldset:last-child{border-bottom:0}
.calc legend{font-weight:700;color:var(--ink);font-size:1.12rem;padding:0;margin-bottom:12px;display:flex;align-items:center;gap:10px}
.calc legend b{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--ink);color:#fff;font:600 .9rem var(--mono)}
.f{margin-bottom:14px}
.f label{display:block;font-weight:600;color:var(--ink);margin-bottom:4px;font-size:1rem}
.hint{display:block;font-size:.88rem;color:var(--muted);margin:-2px 0 6px;line-height:1.4}
.money{display:flex;align-items:stretch;border:2px solid #8b94a3;border-radius:var(--r);background:#fff;overflow:hidden}
.money:focus-within{border-color:var(--green);box-shadow:0 0 0 3px var(--green-soft)}
.money span{display:grid;place-items:center;padding:0 12px;background:#f1f3ef;color:var(--ink);font:600 1.1rem var(--mono);border-right:1px solid var(--line)}
.money input{border:0;outline:0;min-height:50px;width:100%;padding:0 12px;font:500 1.15rem var(--mono);color:var(--ink);background:transparent}
.calc input[type=number],.enq-form input,.enq-form select,.enq-form textarea{width:100%;min-height:52px;border:2px solid #8b94a3;border-radius:var(--r);padding:0 12px;font:500 1.1rem var(--sans);color:var(--ink);background:#fff}
.calc input[type=number]{font-family:var(--mono)}
.calc input[type=number]:focus,.enq-form :is(input,select,textarea):focus{border-color:var(--green);outline:0;box-shadow:0 0 0 3px var(--green-soft)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
.seg{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.seg label{position:relative}
.seg input{position:absolute;opacity:0;inset:0}
.seg span{display:grid;place-items:center;min-height:54px;border:2px solid #8b94a3;border-radius:var(--r);font-weight:600;color:var(--ink);cursor:pointer;background:#fff}
.seg input:checked+span{background:var(--ink);border-color:var(--ink);color:#fff}
.seg input:focus-visible+span{outline:3px solid var(--green);outline-offset:2px}
.sub{font-weight:600;color:var(--ink);margin:6px 0 8px;font-size:1rem}
.chks{display:grid;grid-template-columns:1fr 1fr;gap:6px 14px;margin-bottom:16px}
.chk{display:flex;gap:10px;align-items:flex-start;font-size:.98rem;line-height:1.35;cursor:pointer;padding:6px 0;min-height:44px}
.chk input{width:24px;height:24px;flex:none;accent-color:var(--green);margin:0}
.chk.wide{margin-top:4px}
.calc-out{background:var(--ink);color:#e4e9f2;padding:24px 22px;position:relative}
.calc-out h3{color:#fff;font-size:1.25rem;margin-bottom:14px}
.tot{margin:0 0 16px}
.tot div{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.14)}
.tot dt{font-size:1rem}
.tot dd{margin:0;font:600 1.6rem/1.1 var(--mono);color:#fff;text-align:right}
.tot .diff dd{color:#8fe0b3}
.tot .diff.neg dd{color:#ffc78a}
.tot .pd dd{color:#bfe8d0}
.bars{display:grid;gap:8px;margin:6px 0 18px}
.bar{position:relative;height:30px;background:rgba(255,255,255,.08);border-radius:4px;overflow:hidden}
.bar i{position:absolute;inset:0 auto 0 0;width:0;background:#8fe0b3;transition:width .4s}
.bar.uk i{background:#c9d3e6}
.bar.pd i{background:#5fc28b}
.bar span{position:relative;z-index:1;font:600 .85rem/30px var(--mono);padding-left:10px;color:var(--ink)}
.split{font-size:.92rem;margin-bottom:14px}
.split table{width:100%;border-collapse:collapse}
.split td{padding:4px 0;border-bottom:1px dashed rgba(255,255,255,.12)}
.split td:last-child{text-align:right;font-family:var(--mono);color:#fff}
.missing h4{color:#ffd59a;font-size:1rem;margin-bottom:6px}
.missing ul{margin:0 0 14px;padding-left:1.1em;font-size:.95rem}
.missing li{margin-bottom:4px}
.missing.none h4{color:#8fe0b3}
.calc-note{font-size:.85rem;color:#b9c3d6;margin:0 0 8px}
.calc-note a{color:#fff}
.calc-out .sticky{position:sticky;top:96px}
@media (max-width:960px){.calc{grid-template-columns:1fr}}
@media (max-width:560px){.chks,.grid2{grid-template-columns:1fr}.calc fieldset{padding:18px 16px}.calc-out{padding:20px 16px}}

/* sections */
.sec{padding:64px 0}
.sec.white{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:760px;margin-bottom:32px}
.ledger{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;font-size:1rem}
.ledger th,.ledger td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--rule);vertical-align:top}
.ledger thead th{background:var(--ink);color:#fff;font-weight:600}
.ledger td.n{font-family:var(--mono);white-space:nowrap}
.tw{overflow-x:auto;margin:0 0 1.4em;-webkit-overflow-scrolling:touch}
.tw table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);font-size:1rem}
.tw th,.tw td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--rule);vertical-align:top}
.tw thead th{background:var(--ink);color:#fff}
.tw tbody th{color:var(--ink);font-weight:600}
.ukref{display:flex;gap:18px;align-items:center;background:var(--green-soft);border-left:6px solid var(--green);padding:18px 20px;border-radius:var(--r);margin:0 0 1.4em}
.ukref .big{font:600 2rem/1 var(--mono);color:var(--green-d);white-space:nowrap}
.ukref span:last-child{font-size:.98rem}
@media (max-width:560px){.ukref{flex-direction:column;align-items:flex-start}}
.cols3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px}
.card h3{margin-bottom:.4em}
.card .n{font:600 .85rem var(--mono);color:var(--green);display:block;margin-bottom:8px}
@media (max-width:860px){.cols3{grid-template-columns:1fr}}
.warn{background:var(--amber-bg);border-left:6px solid var(--amber);padding:16px 20px;border-radius:var(--r);margin:0 0 1.4em}
.warn strong{color:var(--amber)}
.photo{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center}
.photo img{border-radius:var(--r);border:1px solid var(--line)}
.photo figcaption{font-size:.88rem;color:var(--muted);margin-top:8px}
@media (max-width:860px){.photo{grid-template-columns:1fr}}

/* article */
.crumbs ol{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:22px 0 0;font-size:.92rem;color:var(--muted)}
.crumbs li+li::before{content:"/";margin-right:6px;color:#9aa3b0}
.crumbs a{color:var(--muted)}
.page-head{padding:22px 0 30px;max-width:860px}
.page-head .lead{max-width:60ch}
.byline{display:flex;align-items:center;gap:12px;font-size:.95rem;color:var(--muted);margin:18px 0 22px}
.byline img{width:44px;height:44px;border-radius:50%;object-fit:cover}
.answer{background:#fff;border:2px solid var(--ink);border-radius:var(--r);padding:18px 22px;position:relative}
.answer .lab{position:absolute;top:-13px;left:16px;background:var(--ink);color:#fff;font:600 .78rem/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;padding:6px 10px;border-radius:4px}
.answer p{margin:6px 0 0;font-size:1.08rem;color:var(--ink)}
.article{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;padding:12px 0 64px}
.prose{max-width:72ch}
.prose h2{margin-top:1.6em;font-size:clamp(1.45rem,2.6vw,1.9rem)}
.prose h3{margin-top:1.3em}
.prose ul,.prose ol{padding-left:1.25em;margin:0 0 1.2em}
.prose li{margin-bottom:.45em}
.prose .calc{margin:0 0 1.6em}
.toc{position:sticky;top:100px;align-self:start;font-size:.95rem}
.toc b{display:block;font:600 .8rem var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.toc ol{list-style:none;margin:0 0 24px;padding:0;border-left:2px solid var(--line)}
.toc li a{display:block;padding:6px 0 6px 14px;color:var(--ink);text-decoration:none;line-height:1.35}
.toc li a:hover{color:var(--green)}
.side-cta{background:var(--green-soft);border-radius:var(--r);padding:18px}
.side-cta p{font-size:.98rem;margin-bottom:12px;color:var(--ink)}
.side-cta .btn{width:100%}
@media (max-width:1000px){.article{grid-template-columns:minmax(0,1fr);gap:20px}.toc{position:static;order:-1}.toc ol{display:none}.toc b{display:none}}
.faq details{border:1px solid var(--line);background:#fff;border-radius:var(--r);margin-bottom:10px}
.faq summary{cursor:pointer;padding:16px 48px 16px 18px;font-weight:600;color:var(--ink);list-style:none;position:relative;min-height:52px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:18px;top:12px;font:600 1.4rem var(--mono);color:var(--green)}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 18px 16px;margin:0}
.faq-block{margin-top:2.2em}
.sources{margin-top:2.4em;padding-top:1.2em;border-top:1px solid var(--line);font-size:.95rem}
.sources h2{font-size:1.2rem}
.sources ol{padding-left:1.2em}
.related{padding:48px 0;background:var(--white);border-top:1px solid var(--line)}
.related h2{font-size:1.5rem}
.qgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.q{display:block;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:20px;text-decoration:none;color:var(--text);transition:border-color .2s,transform .2s}
.q:hover{border-color:var(--green);transform:translateY(-2px)}
.q .ico{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:var(--r);background:var(--green-soft);color:var(--green);margin-bottom:10px}
.q .ico svg{width:22px;height:22px}
.q h3{font-size:1.12rem;margin-bottom:.3em}
.q p{font-size:.95rem;color:var(--muted);margin-bottom:.6em}
.q .more{font-weight:600;color:var(--green);font-size:.95rem}
@media (max-width:860px){.qgrid{grid-template-columns:1fr}}

/* CTA, trust, contact */
.cta-band{padding:56px 0}
.cta-band .box{display:flex;gap:28px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:#fff;border:2px solid var(--ink);border-radius:10px;padding:28px}
.cta-band h2{font-size:1.6rem;margin-bottom:.3em}
.cta-band p{margin:0;max-width:56ch;color:var(--muted)}
.cta-band .actions{display:flex;gap:12px;flex-wrap:wrap}
.tp{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;font-size:.95rem;margin:0 0 1.4em}
.tp-stars{color:#00b67a;letter-spacing:2px;font-size:1.1rem;white-space:nowrap}
.enq{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:48px;padding-bottom:64px}
.next{padding-left:1.2em}
.panel{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px}
.enq-form .grid2{gap:0 14px}
.enq-form textarea{min-height:120px;padding:12px}
.enq-form .f label small{font-weight:400;color:var(--muted)}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:.92rem;margin:12px 0 18px}
.consent input{width:24px;height:24px;flex:none;accent-color:var(--green)}
.err{display:none;background:#fbe5e0;color:var(--red);border-radius:var(--r);padding:12px 14px;margin-bottom:14px;font-weight:600}
.err.show{display:block}
.hp{position:absolute;left:-9999px}
@media (max-width:900px){.enq{grid-template-columns:1fr}}
.pub{display:grid;grid-template-columns:200px minmax(0,1fr);gap:32px;align-items:start}
.pub img{border-radius:var(--r)}
@media (max-width:640px){.pub{grid-template-columns:1fr}.pub img{max-width:180px}}

/* footer */
footer{background:var(--ink);color:#c8d1e0;padding:52px 0 110px;font-size:.95rem}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
footer h4{color:#fff;font-size:.85rem;font-family:var(--mono);text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px}
footer ul{list-style:none;margin:0;padding:0}
footer li{margin-bottom:8px}
footer a{color:#fff}
footer .brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.15rem}
footer .brand .mk{width:36px;height:36px;font-size:.85rem}
footer .legal{display:grid;gap:8px;margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.15);font-size:.85rem;color:#aeb8ca}
@media (max-width:860px){footer .cols{grid-template-columns:1fr 1fr}}
@media (max-width:520px){footer .cols{grid-template-columns:1fr}}
.mbar{display:none}
@media (max-width:760px){
  .mbar{display:grid;grid-template-columns:1fr 1fr;gap:8px;position:fixed;left:0;right:0;bottom:0;z-index:40;background:#fff;border-top:1px solid var(--line);padding:10px 12px calc(10px + env(safe-area-inset-bottom))}
  .mbar .btn{min-height:50px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* our price */
.pricebox{background:#fff;border:2px solid var(--green);border-radius:10px;padding:22px 22px 14px;margin:0 0 1.6em;position:relative}
.pricebox .lab{position:absolute;top:-13px;left:16px;background:var(--green);color:#fff;font:600 .78rem/1 var(--mono);letter-spacing:.06em;text-transform:uppercase;padding:6px 10px;border-radius:4px}
.pb-fig{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px;margin:6px 0 14px}
.pb-fig b{font:600 2.6rem/1 var(--mono);color:var(--green-d)}
.pb-fig span{font-weight:600;color:var(--ink)}
.pb-cols{display:grid;grid-template-columns:1fr 1fr;gap:4px 28px}
.pricebox h3{font-size:1.02rem;margin:.4em 0 .3em}
.pricebox ul{margin:0 0 .8em;padding-left:1.15em;font-size:.98rem}
@media (max-width:620px){.pb-cols{grid-template-columns:1fr}}
.pd-in{background:var(--green-soft)}
/* calculator page: give the calculator the full width */
.article:has(.calc){grid-template-columns:1fr}
.article:has(.calc) .toc{display:none}
.prose:has(.calc){max-width:none}
.prose:has(.calc)>*:not(.calc):not(.tw):not(.faq-block):not(.sources){max-width:72ch}
.prose:has(.calc) .faq-block,.prose:has(.calc) .sources,.prose:has(.calc) .tw{max-width:900px}
/* results: keep visible beside the inputs on wide screens; readable bar labels */
@media (min-width:961px){
  .calc{background:linear-gradient(90deg,#fff 0 55.56%,var(--ink) 55.56%);overflow:visible}
  .calc-out{align-self:start;position:sticky;top:92px;background:transparent}
}
.bar span{color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.35)}
.bar i{background:#24784b}
.bar.uk i{background:#5a6b8c}
.bar.pd i{background:#1b6e45}

.prose{min-width:0}
@media (max-width:560px){.tw th,.tw td{padding:10px 9px;font-size:.95rem}.tw{margin-left:-4px;margin-right:-4px}}
.tot dd{white-space:nowrap}
.calc-peek{display:none}
@media (max-width:960px){
  .calc-peek{display:flex;gap:12px;align-items:center;justify-content:space-between;position:sticky;bottom:78px;margin:0 12px 12px;padding:12px 14px;background:var(--ink);color:#fff;border-radius:var(--r);text-decoration:none;font-size:.92rem;box-shadow:0 6px 18px rgba(20,33,61,.25);z-index:5}
  .calc-peek b{font:600 1.05rem var(--mono);display:block}
  .calc-peek .go{color:#8fe0b3;font-weight:600;white-space:nowrap}
}
@media (max-width:960px) and (min-width:761px){.calc-peek{bottom:12px}}
/* no overflow clipping: it would make the calc the sticky scroll container */
.calc{overflow:visible}
.calc-in{border-radius:8px 8px 0 0;background:#fff}
.calc-out{border-radius:0 0 8px 8px}
@media (min-width:961px){.calc-in{border-radius:8px 0 0 8px;background:transparent}.calc-out{border-radius:0 8px 8px 0}}