/* ==========================================================================
   Alderton Associates — site stylesheet
   Direction A "Quiet technical": hairline rules, title-block meta, dimension
   lines; plain white / pale grey / brand-blue grounds (no textures).
   One stylesheet for every page. No framework, no build step.
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root{
  --brand:#004F7C; --brand-deep:#003A5C; --brand-ink:#00324F; --brand-light:#E6F2F7;
  --ink:#16252F; --ink-2:#3A4852; --muted:#56626B; --grey:#9FA4A9;
  --rule:#DCE5EB; --rule-strong:#C9D7E0; --paper:#F6F9FA; --white:#FFFFFF;
  --red:#FF1654; --red-ink:#B8003A; --red-tint:#FFE8EE;
  --green:#23967F; --green-ink:#17705E; --green-tint:#E3F4F0;
  --orange:#FF8600; --orange-ink:#9A4F00; --orange-tint:#FFF1E0;
  --f-head:"Outfit","Segoe UI",system-ui,sans-serif;
  --f-body:"Source Sans 3","Segoe UI",system-ui,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;
  --gut:80px; --sec:56px; --maxw:1440px;
}
@media (max-width:1024px){:root{--gut:40px;--sec:48px}}
@media (max-width:640px){:root{--gut:20px;--sec:40px}}

/* ---------- 2. Base ---------- */
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;font-family:var(--f-body);font-size:17px;line-height:1.6;color:var(--ink);background:var(--white);-webkit-font-smoothing:antialiased}
@media (max-width:640px){body{font-size:16px}}
img{max-width:100%;height:auto;display:block}
p{margin:0}
h1,h2,h3,h4{margin:0;font-family:var(--f-head);color:var(--brand-ink);font-weight:600;letter-spacing:-0.012em;text-wrap:balance}
ul,ol{margin:0;padding:0}
a{color:var(--brand)} a:hover{color:var(--brand-deep)}
:focus-visible{outline:3px solid var(--orange);outline-offset:2px;box-shadow:0 0 0 5px var(--brand-ink);border-radius:1px}
.skip{position:absolute;left:-9999px;top:8px;z-index:100;background:#fff;padding:10px 16px;font-weight:600}
.skip:focus{left:8px}
.sr-only{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.muted{color:var(--muted)}
.small{font-size:15px;line-height:1.55}

/* ---------- 3. Layout ---------- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding-inline:var(--gut)}
.sec{padding-block:var(--sec)}
.sec-sm{padding-block:calc(var(--sec) * .65)}
.stack{display:flex;flex-direction:column;gap:16px}
.stack-lg{display:flex;flex-direction:column;gap:24px}
.row{display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.between{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}
.g2,.g3,.g4,.split,.split-r,.aside{display:grid;gap:32px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.split{grid-template-columns:5fr 7fr;gap:80px}
.split-r{grid-template-columns:7fr 5fr;gap:80px}
.aside{grid-template-columns:260px minmax(0,1fr);gap:72px}
.center{align-items:center}
@media (max-width:1024px){
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split,.split-r{gap:48px}
  .aside{grid-template-columns:200px minmax(0,1fr);gap:48px}
}
@media (max-width:768px){
  .g2,.g3,.split,.split-r,.aside{grid-template-columns:minmax(0,1fr);gap:28px}
}
@media (max-width:480px){.g4:not(.keep2){grid-template-columns:minmax(0,1fr)}.g4.keep2{gap:16px}}
.bt{border-top:1px solid var(--rule)} .bb{border-bottom:1px solid var(--rule)}
.paper{background:var(--paper)} .tint{background:var(--brand-light)}
.dark{background:var(--brand);color:#fff}
.dark h1,.dark h2,.dark h3{color:#fff}
.dark .lead,.dark p{color:#DCEAF2}
.dark a:not(.btn){color:#fff}

/* ---------- 4. Type ---------- */
.mono,.meta{font-family:var(--f-mono);font-size:12px;line-height:1.4;letter-spacing:.08em;text-transform:uppercase;color:var(--brand);font-weight:500}
.meta.muted{color:var(--muted)}
.dark .meta{color:#CFE3EE}
.eyebrow{display:flex;align-items:center;gap:14px;font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--red-ink);font-weight:500}
.eyebrow b{font-weight:500;color:var(--muted)}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:12px 24px;margin-bottom:22px;flex-wrap:wrap}
.sec-head .mono{color:var(--red-ink);letter-spacing:.1em}
.sec-head .stack{gap:8px}

.h-display{font-size:clamp(40px,5vw,68px);line-height:1.03;letter-spacing:-.025em}
.h1{font-size:clamp(34px,4vw,52px);line-height:1.07;letter-spacing:-.02em}
.h2{font-size:clamp(28px,3vw,38px);line-height:1.12}
.h3{font-size:clamp(21px,2vw,24px);line-height:1.25}
.h4{font-size:19px;line-height:1.3}
.lead{font-size:clamp(18px,1.6vw,21px);line-height:1.55;color:var(--ink-2)}
.prose{max-width:720px;display:flex;flex-direction:column;gap:18px}
.prose h2{font-size:clamp(24px,2.4vw,28px);margin-top:20px}
.prose h3{font-size:20px;margin-top:8px}
.prose ul,.prose ol{padding-left:22px;display:flex;flex-direction:column;gap:8px}
.ph-tag{font-family:var(--f-mono);font-size:.78em;background:var(--orange-tint);color:var(--orange-ink);padding:1px 6px;border-radius:2px;-webkit-box-decoration-break:clone;box-decoration-break:clone}

/* ---------- 5. Header ---------- */
.util{background:var(--brand-ink);color:#DCEAF2;font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase}
.util .wrap{display:flex;justify-content:space-between;align-items:center;min-height:36px;gap:16px}
.util a{color:#fff;text-decoration:none}
.util a:hover{text-decoration:underline}
.util .u-right{display:flex;gap:24px;align-items:center}
@media (max-width:640px){.util .u-hide{display:none}}
.site-header{background:#fff;border-bottom:1px solid var(--rule);position:sticky;top:0;z-index:50}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo img{height:30px;width:auto}
.nav{display:flex;gap:26px;align-items:center}
.nav a{font-size:15.5px;font-weight:600;color:var(--ink);text-decoration:none;padding:6px 0 4px;border-bottom:2px solid transparent}
.nav a:hover{color:var(--brand)}
.nav a[aria-current="page"]{color:var(--brand);border-bottom-color:var(--red)}
.menu-btn{display:none;align-items:center;gap:8px;height:44px;padding:0 14px;border:1px solid var(--rule-strong);background:#fff;font:600 15px var(--f-body);color:var(--brand-ink);border-radius:2px;cursor:pointer}
.mobile-nav{display:none}
@media (max-width:1100px){
  .nav,.site-header .hdr-cta{display:none}
  .menu-btn{display:inline-flex}
  .site-header .wrap{height:68px}
  .logo img{height:26px}
  .mobile-nav{display:block;position:absolute;top:100%;left:0;right:0;height:calc(100vh - 68px);background:#fff;border-top:1px solid var(--rule);padding:16px var(--gut) 32px;overflow:auto;display:none}
  .mobile-nav.open{display:block}
  .mobile-nav ul{list-style:none}
  .mobile-nav li a{display:flex;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--rule);font:600 19px var(--f-head);color:var(--brand-ink);text-decoration:none}
  .mobile-nav .btn{margin-top:24px;width:100%}
}

/* ---------- 6. Buttons & links ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:52px;padding:0 24px;border-radius:2px;font:600 16px/1.2 var(--f-body);text-decoration:none;border:1.5px solid var(--brand);cursor:pointer;transition:background .15s,color .15s,border-color .15s;text-align:center}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--red);border-color:var(--red);color:#fff}
.btn-secondary{background:#fff;color:var(--brand)}
.btn-secondary:hover{background:var(--brand-light);color:var(--brand-deep)}
.btn-inverse{background:#fff;color:var(--brand);border-color:#fff}
.btn-inverse:hover{background:var(--red);border-color:var(--red);color:#fff}
.btn-ghost-inv{background:transparent;color:#fff;border-color:rgba(255,255,255,.75)}
.btn-ghost-inv:hover{background:rgba(255,255,255,.1);color:#fff}
.btn-sm{min-height:42px;padding:0 18px;font-size:15px}
.btn[disabled]{background:#E4E9EC;border-color:#E4E9EC;color:#6B757C;cursor:not-allowed}
@media (max-width:640px){.btn-block-m{width:100%}}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--brand);text-decoration:none;border-bottom:1px solid transparent}
.link-arrow:hover{color:var(--red-ink);border-bottom-color:currentColor}
.dark .link-arrow{color:#fff}

/* ---------- 7. Hero ---------- */
.hero{padding-block:clamp(28px,4vw,52px) clamp(28px,4vw,52px)}
.hero .split-r{align-items:center}
.hero-photo{position:relative}
.hero-photo img{width:100%;aspect-ratio:4/3;object-fit:cover}
.page-hero{padding-block:clamp(28px,3.5vw,40px) clamp(28px,4vw,48px);border-bottom:1px solid var(--rule)}
.crumbs{display:flex;gap:10px;font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);flex-wrap:wrap;margin-bottom:14px}
.crumbs a{color:var(--brand);text-decoration:none}
.crumbs a:hover{text-decoration:underline}

/* ---------- 8. Drafting details ---------- */
.fig{margin:0;display:flex;flex-direction:column;gap:12px}
.fig figcaption{display:flex;justify-content:space-between;gap:16px;border-top:1px solid var(--rule);padding-top:10px}
.fig figcaption .mono,.fig figcaption.mono>span:first-child{color:var(--red-ink)}
.fig img{width:100%;object-fit:cover}
.tblock{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--rule);background:var(--paper);font-family:var(--f-body);font-size:15px}
.tblock>div{padding:14px 16px;border-right:1px solid var(--rule);display:flex;flex-direction:column;gap:4px;color:var(--ink);font-weight:600}
.tblock>div:last-child{border-right:0}
.tblock small{font-family:var(--f-mono);font-size:11px;color:var(--red-ink);letter-spacing:.1em;text-transform:uppercase;font-weight:500}
.tblock.five{grid-template-columns:repeat(5,minmax(0,1fr))}
.tblock.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.tblock.two>div:nth-child(2n){border-right:0}
.tblock.two>div:nth-child(n+3){border-top:1px solid var(--rule)}
@media (max-width:640px){
  .tblock:not(.two){grid-template-columns:repeat(2,minmax(0,1fr))}
  .tblock:not(.two)>div:nth-child(2n){border-right:0}
  .tblock:not(.two)>div:nth-child(n+3){border-top:1px solid var(--rule)}
}
.dim{position:relative;height:1px;background:var(--rule);margin:12px 0}
.dark .dim{background:rgba(255,255,255,.35)}
.stat{display:flex;flex-direction:column;gap:6px}
.stat .n{font-family:var(--f-head);font-weight:500;font-size:clamp(36px,4vw,48px);line-height:1;color:var(--brand)}
.dark .stat .n{color:#fff}
.stat .dim{margin:4px 0 2px}

/* ---------- 9. Cards, lists ---------- */
.card{background:#fff;border:1px solid var(--rule);border-top:4px solid var(--red);padding:28px 28px 30px;display:flex;flex-direction:column;gap:14px;text-decoration:none;color:inherit;transition:border-color .15s,box-shadow .15s,transform .15s}
a.card:hover{border-color:var(--red);box-shadow:0 10px 28px rgba(0,79,124,.08);transform:translateY(-2px)}
a.card:hover h3,a.card:hover h2{color:var(--red-ink)}
.card.plain{border-top-color:var(--rule)}
@media (max-width:640px){.card{padding:24px}}
.card-ref{display:flex;justify-content:space-between;align-items:center;gap:12px;font-family:var(--f-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.card-ref span:first-child{color:var(--red-ink)}
.card .more{margin-top:auto}
.cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}
.cols>*{padding:0 40px;border-left:1px solid var(--rule);display:flex;flex-direction:column;gap:14px}
.cols>*:first-child{padding-left:0;border-left:0}
.cols>*:last-child{padding-right:0}
@media (max-width:768px){.cols{grid-template-columns:minmax(0,1fr)}.cols>*{padding:24px 0;border-left:0;border-top:1px solid var(--rule)}.cols>*:first-child{border-top:0;padding-top:0}}
.ticklist{list-style:none;display:flex;flex-direction:column;gap:10px}
.ticklist li{display:flex;gap:12px;align-items:flex-start}
.ticklist li::before{content:"";flex:none;width:8px;height:8px;margin-top:.6em;border-radius:50%;background:var(--red)}
.steps-list{list-style:none;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1px solid var(--rule);background:var(--paper)}
.steps-list>li{padding:28px;border-right:1px solid var(--rule);display:flex;flex-direction:column;gap:10px}
.steps-list>li:last-child{border-right:0}
.steps-list .n{font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;font-weight:500;color:var(--red-ink);line-height:1}
.steps-list .n::before{content:"Step "}
@media (max-width:768px){.steps-list{grid-template-columns:minmax(0,1fr)}.steps-list>li{border-right:0;border-bottom:1px solid var(--rule)}.steps-list>li:last-child{border-bottom:0}}
.tag{display:inline-flex;align-items:center;min-height:28px;padding:2px 10px;border:1px solid var(--rule-strong);font:600 13px/1.2 var(--f-body);color:var(--ink-2);background:#fff;border-radius:2px}
.tags{display:flex;gap:8px;flex-wrap:wrap}

/* project cards */
.proj{display:flex;flex-direction:column;text-decoration:none;color:inherit;border:1px solid var(--rule);border-top:4px solid var(--red);background:#fff;transition:border-color .15s,box-shadow .15s,transform .15s}
.proj:hover{border-color:var(--red);box-shadow:0 10px 28px rgba(0,79,124,.08);transform:translateY(-2px)}
.proj:hover h2,.proj:hover h3{color:var(--red-ink)}
.proj img{aspect-ratio:3/2;object-fit:cover;object-position:center;width:100%;height:auto;border-bottom:1px solid var(--rule);background:var(--paper)}
.proj .body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex-grow:1}
.proj .value{font-family:var(--f-mono);font-size:12px;letter-spacing:.06em;color:var(--brand);text-transform:uppercase}
.proj[hidden]{display:none}

/* team */
.team{list-style:none}
.team.g6{display:grid;grid-template-columns:repeat(5,minmax(0,1fr))}
@media (max-width:1024px){.team.g6{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:640px){.team.g6{grid-template-columns:repeat(2,minmax(0,1fr))}}
.team li{display:flex;flex-direction:column;gap:12px}
.team img{aspect-ratio:4/5;object-fit:cover;width:100%;background:var(--brand-light);filter:grayscale(.15)}
.team .q{font-family:var(--f-mono);font-size:11px;letter-spacing:.05em;color:var(--muted);text-transform:uppercase}

/* logos */
.logos{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:24px 48px}
.logos img{height:56px;width:auto;object-fit:contain}
.logos.sm img{height:48px}
.logos.mono img{filter:grayscale(1);opacity:.8;transition:filter .2s,opacity .2s}
.logos.mono li:hover img{filter:none;opacity:1}

/* quote */
.quote{margin:0;display:flex;flex-direction:column;gap:20px;max-width:900px}
.quote blockquote{margin:0;padding-left:22px;border-left:3px solid var(--red);font-family:var(--f-head);font-weight:400;font-size:clamp(22px,2.4vw,30px);line-height:1.35;color:var(--brand-ink)}
.quote figcaption{font-size:15px;color:var(--muted)}
.quote figcaption strong{color:var(--ink)}

/* ---------- 10. Status ---------- */
.status{display:inline-flex;align-items:center;gap:8px;font:600 14px/1.3 var(--f-body);padding:7px 11px;border-radius:2px}
.status::before{content:"";width:8px;height:8px;border-radius:50%;flex:none}
.status.ok{background:var(--green-tint);color:var(--green-ink)}.status.ok::before{background:var(--green)}
.status.warn{background:var(--orange-tint);color:var(--orange-ink)}.status.warn::before{background:var(--orange)}
.status.err{background:var(--red-tint);color:var(--red-ink)}.status.err::before{background:var(--red)}
.status.info{background:var(--brand-light);color:var(--brand)}.status.info::before{background:var(--brand)}

/* ---------- 11. Forms ---------- */
fieldset{border:0;margin:0;padding:0;min-width:0}
legend{padding:0}
.field{display:flex;flex-direction:column;gap:8px}
.label{font-weight:600;font-size:15px;color:var(--ink)}
.label .opt{font-weight:400;color:var(--muted)}
.input,.select,.textarea{font:400 16px/1.4 var(--f-body);color:var(--ink);background:#fff;border:1px solid #7D8A93;border-radius:2px;min-height:48px;padding:10px 14px;width:100%}
.textarea{min-height:140px;resize:vertical}
.select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--brand) 50%),linear-gradient(135deg,var(--brand) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px;background-repeat:no-repeat;padding-right:40px}
.input:focus,.select:focus,.textarea:focus{outline:3px solid var(--orange);outline-offset:0;border-color:var(--brand-ink);box-shadow:none}
.input[aria-invalid="true"],.select[aria-invalid="true"],.textarea[aria-invalid="true"]{border:2px solid var(--red-ink)}
.hint{font-size:14px;color:var(--muted)}
.errmsg{font-size:14px;color:var(--red-ink);font-weight:600}
.errmsg:empty{display:none}
.choice{display:flex;gap:10px;align-items:flex-start;min-height:44px;font-size:16px;padding-top:10px}
.choice input{width:20px;height:20px;accent-color:var(--brand);margin:1px 0 0;flex:none}
.drop{position:relative;border:1.5px dashed #7D8A93;background:var(--paper);padding:22px;display:flex;gap:14px;align-items:center;border-radius:2px;cursor:pointer}
.drop:focus-within{outline:3px solid var(--orange)}
.drop input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%}
.form-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:20px}
.form-grid>.c12{grid-column:span 12}.form-grid>.c8{grid-column:span 8}.form-grid>.c6{grid-column:span 6}.form-grid>.c4{grid-column:span 4}
@media (max-width:640px){.form-grid>*{grid-column:span 12!important}}
.hp{position:absolute;left:-9999px}
.seg{display:flex;flex-wrap:wrap;gap:8px}
.opt-btn{min-height:44px;padding:10px 16px;border:1px solid #7D8A93;background:#fff;border-radius:2px;font:600 15px/1.3 var(--f-body);color:var(--ink);cursor:pointer;text-align:left}
.opt-btn:hover{border-color:var(--brand);color:var(--brand)}
.opt-btn[aria-pressed="true"]{background:var(--brand);border-color:var(--brand);color:#fff}
.opt-list{display:flex;flex-direction:column;gap:8px}
.opt-list .opt-btn{display:flex;justify-content:space-between;align-items:center;gap:12px;width:100%}
.opt-list .opt-btn::after{content:"→";font-family:var(--f-mono);color:var(--brand)}
.opt-list .opt-btn:hover::after{color:inherit}

/* ---------- 12. Tool panels ---------- */
.tool{border:1px solid var(--brand);background:#fff;display:flex;flex-direction:column}
.tool-hd{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 20px;background:var(--brand);color:#fff;font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase}
.tool-bd{padding:32px;display:flex;flex-direction:column;gap:24px}
@media (max-width:640px){.tool-bd{padding:20px}}
.progress{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:4px}
.progress span{height:4px;background:var(--rule)}
.progress span.on{background:var(--brand)}
.trail{list-style:none;border-top:1px solid var(--rule)}
.trail li{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:8px 0;border-bottom:1px solid var(--rule)}
.trail button{background:none;border:0;color:var(--brand);font:600 15px var(--f-body);cursor:pointer;min-height:44px;padding:0 4px}
.result{border:1px solid var(--rule-strong);background:var(--paper);padding:24px;display:flex;flex-direction:column;gap:14px}
.result.strong{background:#fff;border-color:var(--brand)}
.result img{border:1px solid var(--rule);background:#fff}
.range{font-family:var(--f-head);font-weight:600;font-size:clamp(28px,3vw,36px);color:var(--brand-ink);line-height:1.15}
.range small{font-size:18px;color:var(--muted);font-weight:500}

/* ---------- 13. Table ---------- */
.tbl-wrap{overflow-x:auto}
table.tbl{display:table;width:100%;border-collapse:collapse;font-size:15px;border:1px solid var(--rule);background:#fff}
.tbl th:first-child,.tbl td:first-child{width:1%;white-space:nowrap}
.tbl th{font:500 11.5px var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--red-ink);text-align:left;padding:12px 16px;border-bottom:1px solid var(--rule);background:var(--paper)}
.tbl td{padding:13px 16px;border-bottom:1px solid var(--rule);vertical-align:top}
.tbl tbody tr:last-child td{border-bottom:0}
.tbl tbody tr:nth-child(even) td{background:#FAFCFD}
@media (max-width:640px){
  .tbl.stack thead{display:none}
  .tbl.stack tr{display:flex;flex-direction:column;padding:12px 16px;border-bottom:1px solid var(--rule)}
  .tbl.stack td{border:0;padding:2px 0;width:auto;white-space:normal}
}

/* ---------- 14. Filters ---------- */
.filters{display:flex;gap:8px;flex-wrap:wrap}
.filter{min-height:40px;padding:0 16px;border:1px solid var(--rule-strong);background:#fff;font:600 14.5px/1 var(--f-body);color:var(--ink-2);border-radius:2px;cursor:pointer}
.filter[aria-pressed="true"]{background:var(--brand);border-color:var(--brand);color:#fff}
.filter:hover{border-color:var(--brand);color:var(--brand)}
.filter[aria-pressed="true"]:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff}
@media (max-width:640px){.filters.scroll{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;margin-inline:calc(var(--gut) * -1);padding-inline:var(--gut)}.filters.scroll .filter{flex:none}}

/* ---------- 15. Accreditations row + footer ---------- */
.accred{background:#fff;border-top:1px solid var(--rule);padding-block:28px}
.accred-list{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:20px 56px}
.accred-list img{height:50px;width:auto;max-width:150px;object-fit:contain}
.accred-list img.aps{height:54px}
.accred-logo{height:64px;display:flex;align-items:center;gap:14px;align-self:flex-start}
.accred-logo img{height:54px;width:auto;max-width:100%;object-fit:contain}
@media (max-width:768px){.accred-list{gap:16px 28px}.accred-list img{height:44px;max-width:120px}}
.site-footer{background:var(--paper);color:var(--ink-2);border-top:1px solid var(--rule)}
.site-footer a{color:var(--ink);text-decoration:none}
.site-footer a:hover{color:var(--brand);text-decoration:underline}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr auto;gap:40px;padding-block:48px 40px}
.foot-grid ul{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:15.5px}
.f-head{font:600 18px var(--f-head);color:var(--brand-ink);margin-bottom:16px}
.f-brand{display:flex;flex-direction:column;gap:20px;max-width:320px}
.f-contact{display:flex;flex-direction:column;gap:6px;font:600 17px/1.4 var(--f-body)}
.f-contact a{color:var(--brand-ink)}
.f-brand img{height:34px;width:auto}
.f-brand .small{color:var(--ink-2)}
.f-right{display:flex;flex-direction:column;align-items:flex-end;gap:24px}
.f-rics{height:56px;width:auto}
.f-social{display:flex;gap:12px}
.f-social a{display:inline-flex;width:40px;height:40px;align-items:center;justify-content:center;background:var(--brand-ink);color:#fff;border-radius:4px}
.f-social a:hover{background:var(--brand);color:#fff;text-decoration:none}
.foot-base{border-top:1px solid var(--rule);padding-block:18px 22px;display:flex;justify-content:space-between;align-items:center;gap:12px 32px;font-size:14px;flex-wrap:wrap;color:var(--muted)}
.foot-base nav{display:flex;gap:0}
.foot-base nav a{padding:0 14px;border-left:1px solid var(--rule-strong)}
.foot-base nav a:first-child{padding-left:0;border-left:0}
@media (max-width:1024px){.foot-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.foot-grid .f-brand{grid-column:1/-1;max-width:none}.f-right{flex-direction:row;align-items:center;justify-content:flex-start;grid-column:1/-1}}
@media (max-width:640px){.foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 20px;padding-block:36px 28px}.foot-grid>div:not(.f-brand):not(.f-right):nth-child(2){grid-column:1/-1}}

/* ---------- 16. Misc ---------- */
details.faq{border-bottom:1px solid var(--rule);padding:20px 0}
details.faq summary{font:600 19px/1.3 var(--f-head);color:var(--brand-ink);cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-family:var(--f-mono);color:var(--brand)}
details.faq[open] summary::after{content:"–"}
details.faq>div{margin-top:12px;color:var(--ink-2);display:flex;flex-direction:column;gap:10px}
.notice-bar{background:var(--paper);border:1px solid var(--rule);padding:14px 18px;font-size:15px}
.cta-band{padding-block:clamp(36px,5vw,56px)}
.cta-band .wrap{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.map{border:1px solid var(--rule);width:100%;aspect-ratio:4/3;background:var(--brand-light)}
.success{display:none}
.is-sent .success{display:flex}
.is-sent .form-body{display:none}

.pw-stats{display:grid;grid-template-columns:minmax(0,1fr);border:1px solid var(--brand);background:#fff}
.pw-stats>div{padding:20px 24px;border-bottom:1px solid var(--rule-strong)}
.pw-stats>div:last-child{border-bottom:0}
.pw-stats .n{font-size:clamp(28px,3vw,36px)}

/* ---------- 17. Motion (hover + scroll reveal only) ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}
.no-js .reveal{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- 18. Print ---------- */
@media print{.util,.site-header,.site-footer,.accred,.cta-band,.tool{display:none}body{font-size:11pt}}
.logos.clients img{height:60px;width:auto;max-width:180px}
@media (max-width:640px){.logos.clients{gap:16px 28px}.logos.clients img{height:44px;max-width:130px}}
/* ===== Party wall section — marker on the nav item =====
   The party wall section (party-wall.html) uses the brand pink as its
   accent. The header/mobile nav item carries the same marker; footer links
   to the page are deliberately left plain. */
.nav a[href$="party-wall.html"]{position:relative;padding-left:18px}
.nav a[href$="party-wall.html"]::before{content:"";position:absolute;left:0;top:50%;width:10px;height:10px;transform:translateY(-50%);background:var(--red)}
.nav a[href$="party-wall.html"]:hover,.nav a[href$="party-wall.html"][aria-current="page"]{border-bottom-color:var(--red)}
.mobile-nav li a[href$="party-wall.html"]{border-left:4px solid var(--red);padding-left:12px}

/* ---------- 19. Service cards (services index) ---------- */
.svc,.svc *{text-decoration:none}
.svc{display:flex;flex-direction:column;background:#fff;border:1px solid var(--rule);border-top:4px solid var(--red);color:inherit;transition:border-color .15s,box-shadow .15s,transform .15s}
.svc:hover{border-color:var(--red);box-shadow:0 10px 28px rgba(0,79,124,.08);transform:translateY(-2px)}
.svc:hover h2{color:var(--red-ink)}
.svc .pic{aspect-ratio:3/2;overflow:hidden;background:var(--paper);border-bottom:1px solid var(--rule)}
.svc img,.svc .pic img{width:100%;height:100%;aspect-ratio:3/2;object-fit:cover;object-position:center;display:block}
.svc .body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex-grow:1}
.svc h2{font-size:21px;line-height:1.25;color:var(--brand-ink)}
.svc .link-arrow{margin-top:auto;border-bottom:0}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{display:inline-flex;align-items:center;min-height:24px;padding:2px 9px;border-radius:2px;font:600 12.5px/1.2 var(--f-body);letter-spacing:.01em;border:1px solid transparent}
.chip.housing{background:var(--brand-light);color:var(--brand-ink);border-color:#CFE3EE}
.chip.schools{background:var(--green-tint);color:var(--green-ink);border-color:#C6E6DC}
.chip.homeowners{background:var(--red-tint);color:var(--red-ink);border-color:#FFC7D5}
.chip.other{background:var(--paper);color:var(--ink-2);border-color:var(--rule-strong)}
.svc[hidden]{display:none}

/* ---------- 20. Party wall look, shared site-wide ----------
   Lifted from the party wall section: a secondary nav under the sticky
   header, boxes with a thick pink line on top, and feint-blue tile grids
   with thin borders. */
/* secondary navigation */
.subnav{position:sticky;top:var(--hdr-h,80px);z-index:40;background:#fff;border-bottom:1px solid var(--rule)}
.subnav-inner{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut);display:flex;align-items:stretch;gap:16px}
.subnav-label{display:inline-flex;align-items:center;gap:10px;padding:0 20px 0 0;margin-right:4px;border-right:1px solid var(--rule);font-family:var(--f-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--red-ink);font-weight:500;white-space:nowrap;flex:none}
.subnav-label::before{content:"";width:10px;height:10px;background:var(--red);flex:none}
.subnav-list{list-style:none;display:flex;gap:2px;flex:1;min-width:0;overflow-x:auto;scrollbar-width:none}
.subnav-list::-webkit-scrollbar{display:none}
.subnav-list li{flex:none}
.subnav-list a{display:inline-flex;align-items:center;padding:15px 11px 13px;font:600 15px/1 var(--f-body);color:var(--ink-2);text-decoration:none;border-bottom:2px solid transparent;white-space:nowrap}
.subnav-list a:hover{color:var(--red-ink)}
.subnav-list a[aria-current="page"]{color:var(--brand-ink);border-bottom-color:var(--red)}
@media (max-width:1100px){.subnav{top:var(--hdr-h,68px)}}
@media (max-width:880px){.subnav-label{display:none}.subnav-list a{font-size:13.5px;padding:12px 9px}.subnav-inner{gap:0}}
/* boxes */
.box{background:#fff;border:1px solid var(--rule);border-top:4px solid var(--red);padding:28px;display:flex;flex-direction:column;gap:12px}
.box .kicker,.kicker{font-family:var(--f-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--red-ink);font-weight:500}
.box.paper{background:var(--paper)}
.box.blue{border-top-color:var(--brand)}
.box.green{border-top-color:var(--green)}
@media (max-width:640px){.box{padding:22px}}
/* feint-blue tile grid with thin borders */
.tiles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--rule);background:var(--paper);list-style:none;margin:0;padding:0}
.tiles.t3{grid-template-columns:repeat(3,minmax(0,1fr))}
.tiles.t2{grid-template-columns:repeat(2,minmax(0,1fr))}
.tiles.t6{grid-template-columns:repeat(6,minmax(0,1fr))}
.tiles>*{padding:22px 24px;border-right:1px solid var(--rule);border-bottom:1px solid var(--rule);display:flex;flex-direction:column;gap:8px;margin-bottom:-1px}
.tiles>*:nth-child(4n){border-right:0}
.tiles.t3>*:nth-child(3n),.tiles.t2>*:nth-child(2n),.tiles.t6>*:nth-child(6n){border-right:0}
.tiles.t3>*:nth-child(4n),.tiles.t2>*:nth-child(4n){border-right:1px solid var(--rule)}
.tiles.t3>*:nth-child(3n){border-right:0}
.tiles>*:last-child{border-bottom:0}
.tiles .kicker{margin-bottom:2px}
.tiles h3,.tiles .h4{font-size:17px;line-height:1.3}
.tiles p{font-size:15px;line-height:1.5;color:var(--ink-2)}
.tiles .n{font-family:var(--f-head);font-weight:500;font-size:clamp(28px,3vw,36px);line-height:1;color:var(--brand)}
.numbers{display:grid;grid-template-columns:repeat(5,minmax(0,1fr)) auto;gap:32px 20px;align-items:center;padding:8px 0}
.num{text-align:center}
.num .n{display:block;font-family:var(--f-head);font-weight:500;font-size:clamp(34px,3.4vw,48px);line-height:1;color:var(--red);letter-spacing:-.02em}
.num p{margin:8px 0 0;font-size:15px;line-height:1.35;color:var(--ink)}
.numbers-label{border-left:3px solid var(--red);padding-left:20px;display:flex;flex-direction:column;gap:4px;justify-self:end}
.numbers-label strong{font-family:var(--f-head);font-size:18px;text-transform:uppercase;letter-spacing:.02em;color:var(--ink)}
.numbers-label span{font-size:15px;color:var(--ink-2)}
@media (max-width:1024px){.numbers{grid-template-columns:repeat(3,minmax(0,1fr))}.numbers-label{grid-column:1/-1;justify-self:start}}
@media (max-width:480px){.numbers{grid-template-columns:minmax(0,1fr)}}
.tiles a{text-decoration:none;color:inherit}
.tiles a:hover h3{color:var(--red-ink)}
.tiles .link-arrow{margin-top:auto;font-size:15px;border-bottom:0}
@media (max-width:1024px){.tiles.t6{grid-template-columns:repeat(3,minmax(0,1fr))}.tiles.t6>*:nth-child(6n){border-right:1px solid var(--rule)}.tiles.t6>*:nth-child(3n){border-right:0}}
@media (max-width:768px){
  .tiles,.tiles.t3,.tiles.t6{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tiles>*{border-right:1px solid var(--rule)!important}
  .tiles>*:nth-child(2n){border-right:0!important}
  .tiles>*:last-child{border-bottom:1px solid var(--rule)}
}
@media (max-width:480px){.tiles,.tiles.t2,.tiles.t3,.tiles.t6{grid-template-columns:minmax(0,1fr)}.tiles>*{border-right:0!important}}
/* pink info strip (party wall "no notice?" bar) */
.strip{display:flex;justify-content:space-between;align-items:center;gap:16px 24px;flex-wrap:wrap;background:var(--red-tint);border:1px dashed var(--red);padding:16px 20px;font-size:15.5px}
.strip .btn{background:#fff;border-color:var(--ink);color:var(--ink);min-height:44px}
.strip .btn:hover{background:var(--ink);color:#fff}
/* client names list */
.clients-list{list-style:none;display:flex;flex-wrap:wrap;gap:8px}
.clients-list li{display:inline-flex;align-items:center;min-height:36px;padding:4px 14px;background:#fff;border:1px solid var(--rule);font:600 14px/1.2 var(--f-body);color:var(--brand-ink);border-radius:2px}
/* stats: replace dimension lines with tile styling */
.stat{display:flex;flex-direction:column;gap:6px}
.stat .n{font-family:var(--f-head);font-weight:500;font-size:clamp(36px,4vw,48px);line-height:1;color:var(--brand)}
.stat .dim{display:none}
.stat .h4{margin-top:4px}

/* §21 Line-drawing sketches (party wall illustration language, extended to other sectors) */
.sketch-fig{margin:0}
.sketch-fig .sketch{display:block;width:100%;height:auto;aspect-ratio:4/3}

/* §22 Phase 1 — accessibility: motion, touch targets (30 Sep 2026) */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}
}
.btn-sm,.filter,.strip .btn,.mobile-nav a{min-height:44px}
.link-arrow{min-height:44px}

/* §23 Phase 2 — sectors landing page (30 Sep 2026) */
.tblock.stacked{grid-template-columns:1fr}
.tblock.stacked>div{border-right:0;border-top:1px solid var(--rule)}
.tblock.stacked>div:first-child{border-top:0}
.tblock.stacked ul li{font-weight:600}
.tblock.stacked ul li a{color:var(--brand);text-decoration:none}
.tblock.stacked ul li a:hover{text-decoration:underline}
.tblock.stacked>div{font-weight:400}

/* §24 Phase 2 — contact form audience selector */
.aud-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
@media (max-width:760px){.aud-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.opt-btn.aud{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;min-height:64px;cursor:pointer}
.opt-btn.aud input{margin-top:3px;accent-color:var(--brand);flex-shrink:0}
.opt-btn.aud span{display:flex;flex-direction:column;gap:2px}
.opt-btn.aud small{font-weight:400;font-size:13px;color:var(--ink-2)}
.opt-btn.aud.is-on{border-color:var(--brand);background:var(--brand-light);color:var(--brand-ink)}
.opt-btn.aud:focus-within{outline:3px solid var(--orange);outline-offset:2px}

/* §25 Phase 2 — filters: chips on desktop, selects on small screens */
.filter-selects{display:none;width:100%;gap:12px}
.filter-selects .label{display:flex;flex-direction:column;gap:6px;flex:1;min-width:0}
.filter-selects .select{width:100%}
@media (max-width:640px){
  .filters .filter{display:none}
  .filter-selects{display:flex;flex-wrap:wrap}
}
.filter[aria-pressed="true"]::before{content:"✓ ";font-weight:700}

/* §26 Phase 3 — cards: keep the pink top line, drop the lift/shadow, add a
   border-colour change and an arrow nudge on hover (architectural, not SaaS). */
.card,.proj,.svc,.box,.tag,.filter,.btn,.opt-btn,.input,.select,.textarea,.drop,.menu-btn,.status,.chip{border-radius:0}
a.card:hover,.proj:hover,.svc:hover{box-shadow:none;transform:none;border-color:var(--brand)}
a.card:hover h2,a.card:hover h3,.proj:hover h2,.proj:hover h3,.svc:hover h2{color:var(--brand)}
.card,.proj,.svc{transition:border-color 160ms ease}
.link-arrow svg,.card .more svg,.svc .link-arrow svg{transition:transform 160ms ease}
a.card:hover .link-arrow svg,a.card:hover .more svg,.svc:hover .link-arrow svg,.proj:hover .link-arrow svg,.link-arrow:hover svg{transform:translateX(3px)}

/* §27 Phase 3 — homepage hero: real project photo with a drawing-style title block */
.hero-photo{position:relative}
.fig figcaption.hero-tb{position:absolute;left:16px;bottom:16px;right:16px;max-width:360px;display:grid;grid-template-columns:auto 1fr;gap:10px 14px;align-items:start;justify-content:start;padding-top:12px;border-top:1px solid var(--rule);background:rgba(255,255,255,.96);border:1px solid var(--rule);border-left:3px solid var(--red);padding:12px 14px;font-family:var(--f-body)}
.hero-tb-mark{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border:1.5px solid var(--brand-ink);border-radius:50%;font:600 13px var(--f-mono);color:var(--brand-ink);position:relative}
.hero-tb-mark::after{content:"";position:absolute;left:50%;top:100%;width:1px;height:14px;background:var(--brand-ink)}
.hero-tb dl{margin:0;display:flex;flex-direction:column;gap:4px;grid-column:2;grid-row:1}
.hero-tb dl>div{display:grid;grid-template-columns:58px 1fr;gap:8px;align-items:baseline}
.hero-tb dt{font:500 10.5px var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--red-ink)}
.hero-tb dd{margin:0;font-size:13.5px;font-weight:600;color:var(--brand-ink);line-height:1.3}
.hero-tb-link{grid-column:2;grid-row:2;font:600 12.5px var(--f-body);color:var(--brand);text-decoration:none;margin-top:2px}
.hero-tb-link:hover{text-decoration:underline}
@media (max-width:640px){.fig figcaption.hero-tb{position:static;max-width:none;margin-top:-1px;border-top:0}.hero-tb-mark::after{display:none}}

/* §28 Phase 3 — case studies: featured project, supporting cards, compact records */
.cs-grid .proj.featured{grid-column:span 2;display:grid;grid-template-columns:7fr 5fr}
.cs-grid .proj.featured img{aspect-ratio:auto;height:100%;border-bottom:0;border-right:1px solid var(--rule)}
.cs-grid .proj.featured .body{padding:28px;gap:14px}
.cs-grid .proj.featured .card-ref{flex-wrap:wrap}
@media (max-width:980px){.cs-grid .proj.featured{grid-column:span 1;grid-template-columns:1fr}.cs-grid .proj.featured img{aspect-ratio:3/2;height:auto;border-right:0;border-bottom:1px solid var(--rule)}}
.rec-list{display:flex;flex-direction:column;border-top:1px solid var(--brand)}
.rec{display:grid;grid-template-columns:minmax(0,2.2fr) minmax(0,2fr) minmax(0,2.4fr) auto;gap:8px 24px;align-items:baseline;padding:14px 0;border-bottom:1px solid var(--rule);text-decoration:none;color:inherit;transition:background 160ms ease}
.rec:hover{background:var(--paper)}
.rec-title{font-family:var(--f-mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--brand-ink);font-weight:500}
.rec-sub{font-size:14.5px;color:var(--ink)}
.rec-meta{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.rec-go{font-size:13.5px;font-weight:600;color:var(--brand);white-space:nowrap;justify-self:end}
.rec:hover .rec-go{text-decoration:underline}
.rec[hidden]{display:none}
@media (max-width:760px){.rec{grid-template-columns:1fr;gap:4px;padding:14px 0}.rec-go{justify-self:start}}

/* §29 Phase 3 — stats as project data; compact accreditation strip */
.num .n,.stat,.project-meta,.rec-meta,.tblock,.value{font-variant-numeric:tabular-nums}
.num{text-align:left;border-left:1px solid var(--rule);padding-left:18px}
.num .n{color:var(--brand-ink);font-weight:600;font-size:clamp(30px,3vw,42px)}
.num p{font-size:14px;color:var(--ink-2)}
.numbers{gap:24px 16px}
@media (max-width:1024px){.numbers-label{border-left:0;padding-left:0}}
.accred-sm{padding-block:18px}
.accred-sm .accred-list{gap:14px 36px}
.accred-sm .accred-list img{height:40px;max-width:120px}
.accred-more a{font:600 13.5px var(--f-body);color:var(--brand);text-decoration:none;border-bottom:1px solid transparent}
.accred-more a:hover{border-bottom-color:currentColor}

/* §30 Phase 4 — colour roles and measure.
   Roles: --brand = core/neutral action · --ink = body copy · --brand-light = highlighted panels ·
   --red(-ink) = defect / error / critical · --orange(-ink) = attention / warning / focus ·
   --green(-ink) = complete / confirmed / compliant · --muted = supporting text only.
   Bright --red/--orange/--green are for marks, rules and large headlines; text and
   white-on-colour controls use the -ink values (AA on white). */
.btn-primary:hover,.btn-inverse:hover{background:var(--red-ink);border-color:var(--red-ink);color:#fff}
.prose{max-width:68ch}
.lead{max-width:54ch}
.dark .lead{max-width:60ch}

/* §31 Phase 5 — technical review block on insight articles */
.tech-review{display:flex;flex-wrap:wrap;gap:6px 24px;margin-top:4px;padding:10px 14px;border:1px solid var(--rule);border-left:3px solid var(--brand);background:var(--paper);font-size:13.5px;color:var(--ink-2)}
.tech-review strong{font-family:var(--f-mono);font-weight:500;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--red-ink);margin-right:6px}

/* §32 Phase 6 — article layout: table of contents beside the text on wide screens, stacked on phones
   (was an inline grid-template-columns that squeezed the article to ~100px at 375px) */
.aside-toc{grid-template-columns:200px minmax(0,1fr)}
@media (max-width:860px){.aside-toc{grid-template-columns:minmax(0,1fr)}.aside-toc>nav{border-top:0!important;border-bottom:1px solid var(--rule);padding:0 0 16px!important}}
/* party wall welcome tags: minimum 11px */
.pw .welcome-cta-tag,.pw .how-tag{font-size:11px!important}
.subnav-list a{min-height:44px;box-sizing:border-box}

/* §33 Phase 7 — <picture> wrappers behave like their <img> in grids/flex */
picture{display:contents}
picture>source{display:none}
.split>picture>img,.split-r>picture>img,.g2>picture>img,.g3>picture>img{width:100%;height:auto}

/* §34 Framework appointments (homepage) — added 1 Oct 2026 */
.fw-lead{max-width:60ch;margin:0 0 28px}
.fw-logo{height:72px;display:flex;align-items:center;margin-bottom:6px}
.fw-logo img{height:100%;width:auto;max-width:220px;object-fit:contain}
@media (max-width:640px){.fw-logo{height:60px}}