@font-face{font-family:Manrope;font-style:normal;font-weight:400 700;font-display:swap;src:url(/fonts/manrope-latin.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
/* ==========================================================================
   Spec-Mark Group, specmark.ca. Site stylesheet, October 2026.
   One typeface (Manrope), navy ink, a pale panel grey, green for actions.
   The first screen of each page is the only dark area; everything else is light.
   ========================================================================== */
:root{--paper:#FFFFFF;--panel:#F3F6F8;--ink:#0F2A4A;--ink2:#4A5A6A;--rule:#D9DEE3;--rule2:#9AA6B2;--green:#15803D;--green2:#116A33;--green50:#EEF7F0;--red:#B91C1C;--red50:#FEE2E2;--amber:#92400E;--draft-bg:#FFF7D6;--draft-line:#D4A800;--draft-text:#5A4600;--max:1100px}
*{box-sizing:border-box}
html{font-size:17px;-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:Manrope,system-ui,sans-serif;color:var(--ink);background:var(--paper);line-height:1.55}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
[id]{scroll-margin-top:90px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;z-index:100;background:var(--ink);color:#fff;padding:8px 12px;border-radius:6px;text-decoration:none}
.skip:focus{left:12px}
:focus-visible{outline:3px solid var(--green);outline-offset:3px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.nw{white-space:nowrap}
.ico{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
h1,h2,h3{font-weight:600;letter-spacing:-.015em;line-height:1.15}
h1{font-size:clamp(38px,5vw,60px);line-height:1.05;letter-spacing:-.02em;margin:0 0 22px;max-width:15ch}
h2{font-size:clamp(28px,3.2vw,38px);margin:0 0 14px;max-width:24ch}
h3{font-size:21px;margin:0 0 8px}
.lead{font-size:20px;color:var(--ink2);max-width:50ch;margin:0 0 30px}
.sub{font-size:19px;color:var(--ink2);max-width:60ch;margin:0 0 40px}
.actions{display:flex;flex-wrap:wrap;gap:14px 24px;align-items:center}
.call{color:var(--ink2);font-size:17px}
.tel{text-decoration:none;font-weight:600;white-space:nowrap}
.link{display:inline-block;font-weight:600;text-decoration:underline;text-underline-offset:4px}
.link .ico{display:none}
.caption{font-size:14px;color:var(--ink2);margin:10px 0 0}

/* draft notes: owner input still needed */
.draft{display:inline-block;background:var(--draft-bg);border:1px dashed var(--draft-line);color:var(--draft-text);font-size:14px;font-weight:500;line-height:1.45;padding:6px 10px;border-radius:6px;margin:8px 0 0;max-width:62ch;text-align:left}
.draft.block{display:block;margin-top:14px}
h1>.draft,h2>.draft{font:inherit;padding:0 .25em;line-height:1.15;border-radius:10px;margin:0}
.hide-drafts .draft{display:none}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--green);color:#fff;font:inherit;font-weight:600;padding:13px 22px;min-height:48px;border-radius:6px;text-decoration:none;line-height:1.2;border:0;cursor:pointer}
.btn:hover{background:var(--green2)}
.btn.small{padding:10px 16px;font-size:15px;min-height:40px}
.btn.secondary{background:#fff;color:var(--ink);border:1.5px solid var(--rule2)}
.btn.secondary:hover{background:#fff;border-color:var(--ink)}
.btn .ico{width:18px;height:18px}
.btn[aria-disabled="true"]{cursor:progress}

/* ---------- preview strip (removed at cutover) ---------- */
.strip{background:var(--draft-bg);color:var(--draft-text);font-size:14px;padding:6px 16px;text-align:center}
.strip .wrap{display:flex;justify-content:center;align-items:center;gap:8px 18px;flex-wrap:wrap;padding:0}
.strip button{font:600 13px/1 Manrope,sans-serif;color:var(--draft-text);background:#fff;border:1px solid var(--draft-line);border-radius:999px;padding:6px 11px;cursor:pointer}

/* ---------- header ---------- */
.site-head{position:sticky;top:0;z-index:40;background:#fff;border-bottom:1px solid var(--rule)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:88px}
.logo{display:flex;align-items:center;flex:none;text-decoration:none}
.logo img{width:auto;height:64px}
.site-head nav ul{list-style:none;margin:0;padding:0;display:flex;gap:28px;align-items:center}
.site-head nav a{text-decoration:none;font-weight:500}
.site-head nav a:hover{text-decoration:underline;text-underline-offset:5px}
.site-head nav a[aria-current="page"]{font-weight:600;text-decoration:underline;text-underline-offset:6px;text-decoration-color:var(--green);text-decoration-thickness:2px}
.site-head nav a.btn{text-decoration:none}
.menu-btn{display:none;font:600 15px/1 Manrope,sans-serif;color:var(--ink);background:#fff;border:1.5px solid var(--rule2);border-radius:6px;min-height:40px;padding:0 14px;cursor:pointer}
.only-m{display:none}
.menu-panel{border-top:1px solid var(--rule);background:#fff}
.menu-panel .wrap{display:grid;padding-top:4px;padding-bottom:16px}
.menu-panel a{padding:14px 0;border-bottom:1px solid var(--rule);text-decoration:none;font-weight:600;font-size:16px}
.menu-panel a:last-child{border-bottom:0}

/* ---------- heroes ---------- */
.hero{padding:72px 0 64px}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:64px;align-items:center}
.hero .wrap.one{grid-template-columns:1fr}
.hero figure{margin:0}
.photo{aspect-ratio:4/5;overflow:hidden;border-radius:8px;background:var(--panel)}
.photo img{width:100%;height:100%;object-fit:cover}
.hero .actions .link{font-size:17px}
.crumbs{display:flex;gap:8px;flex-wrap:wrap;font-size:15px;color:var(--ink2);margin:0 0 22px}
.crumbs a{text-decoration:none;font-weight:500;color:var(--ink)}
.crumbs a:hover{text-decoration:underline}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:26px 0 0;padding:0;list-style:none}
.tags li{font-size:14px;font-weight:500;border:1px solid var(--rule);border-radius:999px;padding:6px 12px}

/* photo band hero (home) */
.hero.band{position:relative;color:#fff;padding:88px 0 56px;background:var(--ink)}
.hero.band>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:60% 45%}
.hero.band::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,42,74,.9) 0%,rgba(15,42,74,.68) 50%,rgba(15,42,74,.42) 100%)}
.hero.band .wrap{position:relative;z-index:1}
.hero.band h1{color:#fff}
.hero.band .lead{color:#D7E0EA}
.hero.band .call{color:#D7E0EA}
.hero.band .tel{color:#fff}
.hero.band .panel-form{background:#fff;color:var(--ink)}
.hero.band .panel-form .hint,.hero.band .panel-form .note{color:var(--ink2)}
.hero.band .credit{position:relative;z-index:1;display:block;font-size:13px;color:#C9D3DD;margin:24px auto 0;max-width:var(--max);padding:0 24px}

.proof{background:var(--panel);padding:30px 0}
.proof p{margin:0;font-size:18px;max-width:72ch}

/* ---------- blocks ---------- */
section.block{padding:80px 0;border-top:1px solid var(--rule)}
section.block.tight{padding:56px 0}
.band{background:var(--panel)}
.band h2{margin:36px 0 0;font-size:clamp(24px,2.6vw,30px)}
.facts4{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;padding:34px 0}
.band h2+.facts4{padding-top:22px}
.facts4 div{border-left:3px solid var(--ink);padding-left:16px}
.facts4 strong{display:block;font-size:18px;margin-bottom:4px}
.facts4 span{color:var(--ink2);font-size:15.5px}
.band .draft{margin-bottom:28px}

/* the letter form and other grey panels */
.panel-form{background:var(--panel);border-radius:8px;padding:28px 28px 26px}
.panel-form h2,.panel-form h3{font-size:22px;margin:0 0 4px}
.panel-form .hint{margin:0 0 20px;color:var(--ink2);font-size:16px}
.panel-form .note{font-size:14px;color:var(--ink2);margin:14px 0 0}
.panel{background:var(--panel);border-radius:8px;padding:28px}
.panel h2,.panel h3{font-size:20px;margin:0 0 14px}
.panel .sub{font-size:17px;margin:0 0 16px}

/* ---------- forms: fields shared by every form ---------- */
.field{display:grid;gap:6px;min-width:0;margin:0 0 18px}
[hidden]{display:none!important}
.field label,.field legend,.lbl-f{display:block;font-weight:600;margin:0;padding:0;font-size:15.5px}
.field fieldset,fieldset{border:0;margin:0;padding:0;min-width:0}
.field legend{margin-bottom:8px}
.opt{font-weight:400;color:var(--ink2);font-size:15px}
.hint{font-size:15px;color:var(--ink2);margin:0}
input[type=text],input[type=email],input[type=tel],input[type=date],input[type=number],select,textarea{width:100%;min-height:48px;padding:12px 14px;border:1px solid var(--rule2);border-radius:6px;background:#fff;color:var(--ink);font:inherit;font-size:16px;line-height:1.4}
textarea{min-height:120px;resize:vertical}
input:focus-visible,select:focus-visible,textarea:focus-visible{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(21,128,61,.18)}
[aria-invalid="true"]{border-color:var(--red)!important}
.err{color:var(--red);font-size:15px;font-weight:600;margin:0}
.err:empty{display:none}
.suggest{font-size:15px;color:var(--ink2);margin:4px 0 0}
.suggest button{background:none;border:0;padding:0;font:inherit;color:var(--ink);text-decoration:underline;cursor:pointer;overflow-wrap:anywhere;word-break:break-all;text-align:left}
.suggest:empty{display:none}
.row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:0 0 18px}
.row .field{margin:0}
.choice{display:grid;grid-template-columns:1fr 1fr;gap:6px 16px}
.choice label{display:flex;gap:10px;align-items:center;font-weight:400;min-height:40px;font-size:16px}
.choice input{width:20px;height:20px;margin:0;accent-color:var(--green)}
.hp{position:absolute;left:-10000px;top:auto;width:1px;height:1px;overflow:hidden}

/* ---------- home: four things, notes, steps ---------- */
#h-asks{max-width:30ch}
.four{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.four a{text-decoration:none;display:block}
.four .photo{aspect-ratio:4/3;margin-bottom:12px}
.four h3{font-size:19px;margin:0 0 6px}
.four p{margin:0;color:var(--ink2);font-size:15.5px}
.four a:hover h3{text-decoration:underline;text-underline-offset:4px}
.after-four{margin:40px 0 0;font-size:18px;max-width:66ch}
.after-four .link,.clients-line .link{margin-left:6px}
.clients-line{margin:44px 0 0;font-size:18px;max-width:64ch}
.after-four+.clients-line{margin-top:18px}
.notes{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.notes a{text-decoration:none;display:block}
.notes .photo{aspect-ratio:4/5;margin-bottom:12px}
.notes strong{display:block;font-size:18px;line-height:1.3}
.notes a:hover strong{text-decoration:underline;text-underline-offset:4px}
.notes span{display:block;color:var(--ink2);font-size:15px;margin-top:4px}
ol.steps{list-style:none;counter-reset:step;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
ol.steps li{counter-increment:step;border-top:3px solid var(--ink);padding-top:16px}
ol.steps li::before{content:counter(step);display:block;font-size:40px;font-weight:600;line-height:1;margin-bottom:12px}
ol.steps h3{font-size:21px;margin:0 0 8px}
ol.steps p{margin:0;color:var(--ink2)}
.steps-actions{margin-top:40px}

/* ---------- closing band ---------- */
.close{background:var(--ink);color:#fff;padding:72px 0}
.close .wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.close h2{color:#fff;margin-bottom:10px}
.close p{margin:0;color:#C9D5E2;font-size:19px;max-width:48ch}
.close .actions{justify-content:flex-end}
.close .tel{color:#fff}

/* ---------- footer ---------- */
footer{padding:40px 0 32px;font-size:15px;color:var(--ink2);border-top:1px solid var(--rule)}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px 40px}
footer a{text-decoration:none}
footer a:hover{text-decoration:underline}
footer .wrap.legal{margin-top:18px;font-size:14px}

/* ---------- about ---------- */
.prose{font-size:18px;line-height:1.65;max-width:70ch}
.prose>*+*{margin-top:1em}
.prose p{margin:0}
.prose>*+p{margin-top:1em}
.prose h2{font-size:clamp(24px,2.4vw,30px);margin:2em 0 .4em;max-width:none}
.prose h3{font-size:21px;margin:1.6em 0 .3em}
.prose h2:first-child,.prose h3:first-child{margin-top:0}
.prose ul,.prose ol{padding-left:1.4em;display:grid;gap:.4em;margin:1em 0 0}
.prose li>ul{margin-top:.4em}
.prose a{color:var(--green);text-decoration:underline;text-underline-offset:3px}
.prose strong{font-weight:600}
.prose blockquote{margin:1em 0 0;padding:14px 20px;border-left:3px solid var(--ink);background:var(--panel);color:var(--ink2)}
.prose img{border-radius:8px}
.prose hr{border:0;border-top:1px solid var(--rule);margin:2em 0}
.prose .callout{padding:18px 22px;border-radius:8px;background:var(--panel);border-left:3px solid var(--green)}
.prose .callout.warn{border-left-color:var(--amber)}
.prose figure.fig{margin:1.6em 0 0}
.prose .fig img{width:100%;height:auto;border-radius:8px;margin:0}
.prose .fig figcaption{margin-top:10px;font-size:14.5px;line-height:1.5;color:var(--ink2)}
.prose .fig.tall img{max-height:640px;object-fit:cover}
.prose .fig-pair{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:1.6em 0 0}
.prose .fig-pair figure.fig{margin:0}
.prose .fig-pair img{aspect-ratio:3/4;object-fit:cover}
ol.timeline{list-style:none;margin:0;padding:0;max-width:780px}
ol.timeline li{display:grid;grid-template-columns:150px 1fr;gap:24px;padding:22px 0;border-top:1px solid var(--rule)}
ol.timeline li:last-child{border-bottom:1px solid var(--rule)}
ol.timeline .when{font-weight:600;padding-top:1px}
ol.timeline p{margin:0;font-size:18px}
ol.timeline .photo{margin-top:16px;max-width:440px;aspect-ratio:4/3}
.lines{display:grid;grid-template-columns:1fr 1fr;gap:0 48px;border-top:1px solid var(--rule)}
.lines.one{grid-template-columns:1fr}
.lines.one a{max-width:640px}
.lines a{display:grid;grid-template-columns:116px 1fr;gap:18px;align-items:center;padding:22px 0;border-bottom:1px solid var(--rule);text-decoration:none}
.lines .photo{aspect-ratio:1/1;border-radius:6px}
.lines h3{font-size:20px;margin:0 0 4px}
.lines p{margin:0;color:var(--ink2);font-size:15.5px}
.lines a:hover h3{text-decoration:underline;text-underline-offset:4px}
.clients{margin:28px 0 0;font-size:18px;color:var(--ink2);max-width:60ch}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.two-col p{max-width:48ch;font-size:18px;margin:0 0 16px}
address{font-style:normal;line-height:1.7;font-size:18px}
address a{text-decoration:none;font-weight:600}
address a:hover{text-decoration:underline}
.records{font-size:15px;color:var(--ink2);margin:18px 0 0;max-width:62ch}

/* ---------- heating and cooling ---------- */
.hc{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start}
.hc h3{font-size:20px;margin:22px 0 8px}
.hc h3:first-of-type{margin-top:0}
.hc ul{margin:0;padding-left:20px}
.hc li{margin:4px 0}
.hc .visit li{margin:10px 0;line-height:1.5}
.hc .licence{margin-top:14px;font-size:15.5px;line-height:1.55;color:var(--ink2)}
.hero h2.sub-head,.hero p.sub-head{font-size:20px;margin:22px 0 8px;max-width:60ch;font-weight:500}
.hc p{margin:0 0 18px;font-size:18px;max-width:52ch}
.hc .scope{margin-top:22px;color:var(--ink2)}
.hc .photo{aspect-ratio:3/4}
.hc figure .draft{margin-top:10px}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.gallery figure{margin:0}
.gallery .photo{aspect-ratio:4/3}
.gallery figcaption{font-size:14.5px;color:var(--ink2);margin-top:8px}
.examples{margin-top:52px}
.examples h3{font-size:20px;margin:0 0 16px}
.examples .notes{grid-template-columns:repeat(2,minmax(0,380px))}
.start{background:var(--panel)}
.start .panel-form{background:#fff}
.start-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.start-grid .sub{margin-bottom:18px}
.hint-line{font-size:17px;color:var(--ink2);margin:0 0 14px;max-width:48ch}
.start-form h3{font-size:22px;margin:0 0 16px}
.start-form .field{margin-bottom:16px}
.start-form textarea{min-height:96px}
.faq>.wrap>div+div{margin-top:30px}
.faq h3{font-size:21px;margin:0 0 8px}
.faq p{margin:0;font-size:18px;max-width:66ch}
.faq p.draft{margin-top:10px}

/* ---------- qualifications ---------- */
.certs{display:grid;grid-template-columns:1fr 1fr;gap:22px 48px;padding:22px 0 8px}
.certs div{border-left:3px solid var(--ink);padding-left:16px}
.certs strong{display:block;font-size:19px;margin-bottom:4px}
.certs span{color:var(--ink2);font-size:16px}
.draft+.prose{margin-top:22px}

/* ---------- backflow page ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:36px 24px}
.card{min-width:0}
.card .photo{aspect-ratio:4/3;margin-bottom:12px}
.card h3{font-size:20px;margin:0 0 6px}
.card p{margin:0 0 10px;color:var(--ink2);font-size:16px}
.card .link{font-size:15.5px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.checklist{list-style:none;margin:22px 0 0;padding:0}
.checklist li{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--rule);font-size:17px;line-height:1.45}
.checklist li:first-child{border-top:1px solid var(--rule)}
.checklist .ico{color:var(--green);margin-top:3px;stroke-width:2.4}
.checklist li>div{min-width:0}
.table-scroll{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:16px}
th{text-align:left;font-weight:600;font-size:15px;padding:10px 14px;border-bottom:2px solid var(--ink);white-space:nowrap}
td{padding:12px 14px;border-top:1px solid var(--rule);vertical-align:top}
.devtable td:first-child{font-weight:600;white-space:nowrap}
.devtable td small{display:block;font-weight:400;color:var(--ink2);font-size:14px;white-space:normal}
.programs{display:grid;grid-template-columns:repeat(5,1fr);gap:0 24px;border-top:1px solid var(--rule)}
.program{display:block;padding:18px 0 20px;border-bottom:1px solid var(--rule);text-decoration:none;min-width:0}
.program h3{font-size:18px;margin:0 0 6px}
.program .bylaw{display:block;font-size:14.5px;color:var(--ink2);line-height:1.45}
.program .link{display:inline-block;margin-top:10px;font-size:15px}
.program:hover h3{text-decoration:underline;text-underline-offset:4px}
.faq-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:56px;align-items:start}
.qa{border-top:1px solid var(--rule)}
.qa details{border-bottom:1px solid var(--rule)}
.qa summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 0;font-weight:600;font-size:18px}
.qa summary::-webkit-details-marker{display:none}
.qa summary .pm{flex:none;width:28px;height:28px;border-radius:50%;background:var(--panel);display:grid;place-items:center;transition:transform .25s}
.qa summary .pm .ico{width:16px;height:16px;stroke-width:2.4}
.qa details[open] summary .pm{transform:rotate(180deg)}
.qa .ans{padding:0 44px 20px 0;color:var(--ink2);font-size:17px}
.qa .ans p{margin:0}
.qa .ans p+p{margin-top:10px}

/* ---------- book page ---------- */
.book-head{padding:56px 0 0;border-bottom:1px solid var(--rule)}
.book-head .sub{margin:0}
.tabs{display:flex;gap:6px;margin-top:30px;margin-bottom:-1px}
.tab{font:600 16px/1.2 Manrope,sans-serif;color:var(--ink2);background:none;border:0;border-bottom:3px solid transparent;padding:14px 16px 13px;cursor:pointer;white-space:nowrap;display:inline-flex;gap:10px;align-items:center}
.tab .ico{width:18px;height:18px}
.tab[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--green)}
.tab:hover{color:var(--ink)}
.book{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.42fr);gap:48px;align-items:start;padding:48px 24px 80px}
.form-card{background:#fff;border:1px solid var(--rule);border-radius:8px;padding:32px}
.fs{padding:4px 0 28px;margin-bottom:26px;border-bottom:1px solid var(--rule)}
.fs:last-of-type{border-bottom:0;margin-bottom:0}
legend{padding:0;margin-bottom:16px;font-size:21px;font-weight:600;display:flex;gap:12px;align-items:center}
legend .n{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--panel);color:var(--ink);font-size:13px;font-weight:600}
.choices{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.choices .choice{position:relative;display:block}
.choices .choice input{position:absolute;opacity:0;inset:0;width:100%;height:100%;margin:0;cursor:pointer;z-index:1}
.choices .choice span{position:relative;display:block;min-height:56px;height:100%;padding:13px 16px 13px 44px;border:1px solid var(--rule2);border-radius:6px;font-weight:600;font-size:15.5px;line-height:1.3;background:#fff}
.choices .choice span::before{content:"";position:absolute;left:14px;top:15px;width:18px;height:18px;border:1.5px solid #8A96AA;border-radius:50%;background:#fff}
.choices .choice input[type=checkbox]+span::before{border-radius:4px}
.choices .choice input:checked+span{border-color:var(--green);background:var(--green50);box-shadow:0 0 0 1px var(--green) inset}
.choices .choice input:checked+span::before{border-color:var(--green);background:radial-gradient(circle,var(--green) 45%,transparent 50%)}
.choices .choice input[type=checkbox]:checked+span::before{background:var(--green);box-shadow:inset 0 0 0 3px #fff}
.choices .choice input:focus-visible+span{outline:3px solid var(--green);outline-offset:2px}
.choices .choice span small{display:block;font-weight:400;color:var(--ink2);font-size:14px;margin-top:2px}
.choices.invalid .choice span{border-color:var(--red)}
.stepper{display:flex;align-items:center;width:max-content;border:1px solid var(--rule2);border-radius:6px;overflow:hidden}
.stepper button{width:46px;height:46px;border:0;background:var(--panel);font:600 20px/1 Manrope,sans-serif;color:var(--ink);cursor:pointer}
.stepper input{width:72px;min-height:46px;border:0;border-inline:1px solid var(--rule2);border-radius:0;text-align:center;font-weight:600}
.stepper input:disabled{color:var(--ink2);background:var(--panel)}
.inline-check{display:inline-flex;gap:8px;align-items:center;font-weight:500;font-size:15.5px;margin-top:10px;cursor:pointer}
.inline-check input{width:18px;height:18px;accent-color:var(--green)}
.drop{position:relative;display:grid;place-items:center;gap:8px;text-align:center;padding:24px 16px;border:1.5px dashed var(--rule2);border-radius:6px;background:var(--panel);color:var(--ink2);font-size:16px}
.drop input{position:absolute;inset:0;opacity:0;cursor:pointer}
.drop b{color:var(--ink)}
.drop .icon-circle{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:#fff;color:var(--green)}
.drop:focus-within{outline:3px solid var(--green);outline-offset:3px}
.files{list-style:none;margin:10px 0 0;padding:0;display:grid;gap:6px}
.files li{display:flex;gap:12px;align-items:center;justify-content:space-between;font-size:15px;font-weight:600;background:var(--green50);color:var(--green2);border-radius:6px;padding:8px 12px}
.files li .fname{min-width:0;overflow-wrap:anywhere}
.files li .fsize{font-weight:400;color:var(--ink2);white-space:nowrap;margin-left:auto}
.files li button{flex:none;min-height:36px;padding:0 12px;border:1.5px solid currentColor;border-radius:6px;background:transparent;color:inherit;font:600 14px/1 Manrope,sans-serif;cursor:pointer}
.files li.bad{background:var(--red50);color:var(--red)}
.files li.wait{background:var(--panel);color:var(--ink2)}
.counter{font-size:13.5px;color:var(--ink2);text-align:right}
.form-foot{display:flex;flex-wrap:wrap;gap:16px 20px;align-items:center;justify-content:space-between;margin-top:28px;padding-top:24px;border-top:1px solid var(--rule)}
.form-foot .hint{max-width:30em}
.summary-box,.fail-box{scroll-margin-top:100px}
#mechanical{scroll-margin-top:200px}
.summary-box{border:1.5px solid var(--red);background:var(--red50);border-radius:6px;padding:16px 18px;margin-bottom:24px}
.summary-box h2,.summary-box h4{font-size:16.5px;margin:0 0 6px;color:var(--red)}
.summary-box ul{padding-left:20px;font-size:16px;margin:0}
.summary-box a{color:var(--red)}
.fail-box{border:1.5px solid var(--red);background:var(--red50);border-radius:6px;padding:18px 20px;margin-bottom:24px}
.fail-box h2,.fail-box h4{font-size:19px;margin:0 0 6px;color:var(--red)}
.fail-box p{font-size:16px;margin:0 0 10px}
.fail-box p:last-of-type{margin-bottom:14px}
.fail-box a{font-weight:600}
.done .badge{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;background:var(--green50);color:var(--green);margin-bottom:20px}
.done .badge .ico{width:28px;height:28px;stroke-width:2.6}
.done h2{font-size:30px;margin:0 0 10px}
.done .ref{font-weight:600;font-size:17px;margin:0 0 6px}
.done .sub{margin:0 0 20px}
.done dl{display:grid;grid-template-columns:max-content 1fr;gap:10px 20px;margin:22px 0 26px;padding:20px;background:var(--panel);border-radius:6px;font-size:16px}
.done dt{color:var(--ink2)}
@media (max-width:360px){.done dl{grid-template-columns:1fr;gap:2px 0}.done dd{margin:0 0 10px}}
.done dd{margin:0;font-weight:600;min-width:0;overflow-wrap:anywhere}
.aside{display:grid;gap:16px;position:sticky;top:96px}
.next{list-style:none;display:grid;gap:14px;margin:0;padding:0;counter-reset:n}
.next li{display:grid;grid-template-columns:30px 1fr;gap:12px;font-size:16.5px;line-height:1.45;counter-increment:n}
.next li::before{content:counter(n);width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--ink);color:#fff;font-weight:600;font-size:14px}
.contact-list{list-style:none;display:grid;gap:12px;font-size:16.5px;margin:0;padding:0}
.contact-list li{display:flex;gap:12px;align-items:flex-start}
.contact-list .ico{color:var(--ink2);margin-top:3px}
.contact-list a{font-weight:600;text-decoration:none}
.contact-list a:hover{text-decoration:underline}
.spin{width:18px;height:18px;border:2.5px solid rgba(255,255,255,.45);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.sendprog{flex-basis:100%;display:grid;gap:6px;font-size:15px;color:var(--ink2)}
.sendprog progress{width:100%;height:8px;accent-color:var(--green)}
.privacy{flex-basis:100%;font-size:14.5px;color:var(--ink2);margin:0}
.privacy a{color:var(--ink)}
.start-form .sendprog{margin-top:12px}
.start-form .summary-box,.start-form .fail-box{margin-bottom:18px}

/* ---------- resources: hub, cards, articles, authors ---------- */
.programs-panel{background:var(--panel);border-radius:8px;padding:24px 28px}
.programs-panel h2{font-size:18px;margin:0 0 8px}
.programs-list{list-style:none;margin:0;padding:0;columns:2;column-gap:28px}
.programs-list li{break-inside:avoid}
.programs-list a{display:grid;gap:2px;padding:12px 0;border-top:1px solid var(--rule);text-decoration:none}
.programs-list li:last-child a{border-bottom:1px solid var(--rule)}
.programs-list strong{font-weight:600}
.programs-list span{font-size:14.5px;color:var(--ink2)}
.programs-list a:hover strong{text-decoration:underline;text-underline-offset:4px}
.rgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px 28px}
.rcard{display:block;text-decoration:none;min-width:0}
.rcard .photo{aspect-ratio:16/10;margin-bottom:12px}
.rcard .photo.none{display:grid;place-items:center;color:var(--ink2);font-size:15px;font-weight:500}
.rcard-meta{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink2);margin-bottom:6px}
.lane-pill{font-weight:600;color:var(--ink)}
.lane-pill.lane-draft{color:var(--red)}
.lane-region{font-size:14px;color:var(--ink2);margin-left:10px}
.rcard h3{font-size:19px;margin:0 0 6px;line-height:1.3}
.rcard p{margin:0;color:var(--ink2);font-size:15.5px}
.rcard:hover h3{text-decoration:underline;text-underline-offset:4px}
.article-head{padding:56px 0 36px;border-bottom:1px solid var(--rule)}
.article-head h1{max-width:22ch;font-size:clamp(32px,4vw,50px)}
.article-head .eyebrow{display:flex;align-items:center;flex-wrap:wrap;gap:8px 0;font-size:15px;color:var(--ink2);margin:0 0 14px}
.answer{font-size:20px;color:var(--ink2);max-width:60ch;margin:0 0 20px}
.byline{font-size:15px;color:var(--ink2);display:flex;flex-wrap:wrap;gap:4px 14px;margin:0}
.byline a{font-weight:600;text-decoration:none;color:var(--ink)}
.byline a:hover{text-decoration:underline}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:64px;align-items:start;padding:48px 0 80px}
.article-main{min-width:0}
.article-aside{display:grid;gap:18px;position:sticky;top:96px;min-width:0}
.article-hero{margin:0 0 30px}
.article-hero img{width:100%;max-height:520px;object-fit:cover;border-radius:8px}
.article-hero img.doc{max-height:760px;object-fit:contain;background:var(--panel);border:1px solid var(--rule);padding:12px}
.article-hero figcaption{margin-top:10px;font-size:14.5px;color:var(--ink2)}
.prose .table-scroll{overflow-x:auto;margin:1em 0 0;border:1px solid var(--rule);border-radius:6px}
.prose .table-scroll table{min-width:540px;margin:0}
.facts h2,.cta-panel h2,.related h2{font-size:15px;font-weight:600;color:var(--ink2);margin:0 0 12px}
.facts dl{margin:0}
.fact{padding:10px 0;border-top:1px solid var(--rule)}
.fact:last-child{border-bottom:1px solid var(--rule)}
.fact dt{font-size:13.5px;color:var(--ink2);font-weight:600}
.fact dd{margin:0;font-size:16px;line-height:1.45}
.cta-panel{background:var(--ink);color:#fff}
.cta-panel h2{color:#C9D5E2}
.cta-panel p{font-size:16px;color:#C9D5E2;margin:0 0 16px}
.cta-panel .btn{width:100%;white-space:normal;text-align:center}
.cta-call{margin:12px 0 0;font-size:15px;color:#C9D5E2}
.cta-call a{color:#fff;font-weight:600;text-decoration:none}
.related ul{list-style:none;display:grid;gap:12px;margin:0;padding:0}
.related a{display:block;text-decoration:none;font-weight:600;font-size:15.5px;line-height:1.35}
.related a:hover{text-decoration:underline}
.related .lane-pill{display:block;font-size:13px;color:var(--ink2);font-weight:500;margin-bottom:2px}
.article-faq{margin-top:48px}
.article-faq h2{font-size:26px;margin:0 0 8px}
.sources{margin-top:40px;padding-top:24px;border-top:1px solid var(--rule)}
.sources h2{font-size:15px;font-weight:600;color:var(--ink2);margin:0 0 10px}
.sources ol{padding-left:1.3em;font-size:15px;color:var(--ink2);display:grid;gap:6px;margin:0}
.sources a{color:var(--ink)}
.author-card{justify-self:end;width:100%;max-width:340px}
.author-photo{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:8px}
.author-photo.placeholder{display:grid;place-items:center;background:var(--panel);border:1px dashed var(--rule2);padding:24px;text-align:center}

/* ---------- 404 and prose pages ---------- */
.where{list-style:none;margin:0;padding:0;max-width:560px}
.where a{display:grid;gap:2px;padding:14px 0;border-top:1px solid var(--rule);text-decoration:none}
.where li:last-child a{border-bottom:1px solid var(--rule)}
.where strong{font-weight:600}
.where span{font-size:15px;color:var(--ink2)}
.where a:hover strong{text-decoration:underline;text-underline-offset:4px}

/* ---------- responsive ---------- */
@media (max-width:1099px){
  .bar{min-height:68px;gap:16px}
  .logo img{height:48px}
  .site-head nav ul{gap:14px}
  .site-head nav li.hide-m{display:none}
  .only-m{display:block}
  .menu-btn{display:inline-flex;align-items:center}
}
@media (max-width:860px){
  html{font-size:16px}
  .strip{font-size:13px}
  .hero{padding:40px 0 48px}
  .hero .wrap,.close .wrap,.two,.two-col,.hc,.start-grid,.faq-grid,.article-grid{grid-template-columns:1fr;gap:32px}
  .hero.band{padding:48px 0 36px}
  .hero.band>img{object-position:70% 40%}
  section.block{padding:56px 0}
  .four,.gallery{grid-template-columns:1fr 1fr;gap:18px 14px}
  .notes,.examples .notes,ol.steps,.cards,.rgrid{grid-template-columns:1fr;gap:28px}
  .programs{grid-template-columns:1fr;gap:0}
  .facts4,.certs{grid-template-columns:1fr 1fr;gap:18px;padding-top:24px}
  .band h2{margin-top:28px}
  ol.timeline li{grid-template-columns:1fr;gap:6px;padding:18px 0}
  .lines{grid-template-columns:1fr}
  .close .actions{justify-content:flex-start}
  .photo,.notes .photo{aspect-ratio:4/3}
  .hc .photo{aspect-ratio:3/4}
  .choice{grid-template-columns:1fr}
  .panel-form{padding:22px 18px}
  .book{grid-template-columns:1fr;padding:32px 24px 56px}
  .aside,.article-aside{position:static}
  .row{grid-template-columns:1fr}
  .form-card{padding:22px 18px}
  .tabs{display:grid;grid-template-columns:1fr 1fr;gap:0}
  .tab{white-space:normal;justify-content:center;text-align:center;padding:12px 8px;font-size:15px}
  .article-head{padding:36px 0 28px}
  .author-card{justify-self:start;max-width:280px}
  .prose .fig-pair{grid-template-columns:1fr}
}
@media (max-width:480px){
  .four,.gallery,.facts4,.certs{grid-template-columns:1fr}
  .actions .btn{width:100%}
  .close .actions .btn{width:auto}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .spin{animation:none;border-top-color:rgba(255,255,255,.45)}
  .qa summary .pm{transition:none}
}

/* phones: keep the header on one line */
@media (max-width:480px){
  .bar{gap:12px;min-height:60px}
  .logo img{height:40px}
  .site-head nav ul{gap:10px}
  .btn.small{padding:9px 12px;font-size:14px;white-space:nowrap;min-height:38px}
  .menu-btn{padding:0 12px;font-size:14px;min-height:38px}
  .strip{font-size:12.5px;padding:5px 12px}
}

/* qualifications: the certificate table and the list version (owner chooses one) */
.band .prose{margin:18px 0 22px}
.certs-table{background:#fff;border:1px solid var(--rule);border-radius:8px;max-width:900px}
.certs-table table{min-width:560px}
.certs-table th,.certs-table td{padding:12px 16px}
.certs-table thead th{border-bottom:2px solid var(--ink);background:#fff}
.certs-table tr.group th{font-size:14px;font-weight:600;color:var(--ink2);background:var(--panel);border-top:1px solid var(--rule);padding:8px 16px}
.certs-table td:first-child{font-weight:600;white-space:nowrap}
.band .draft.block{margin:24px 0}
.cert-list{list-style:none;margin:0 0 8px;padding:0;max-width:72ch;display:grid;gap:14px}
.cert-list li{font-size:17px;line-height:1.5;padding-left:16px;border-left:3px solid var(--ink)}
.cert-list strong{font-weight:600}

/* ---- changes review page */
.changes .group{font-size:26px;margin:44px 0 10px;padding-top:28px;border-top:2px solid var(--ink)}
.chg{padding:26px 0 8px;border-top:1px solid var(--rule)}
.chg h2{font-size:22px;margin:0 0 6px;max-width:60ch}
.chg .meta{margin:0 0 12px;font-size:15px}
.chg p{max-width:78ch;line-height:1.55}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:14px 0 22px}
.pair figure{margin:0;border:1px solid var(--rule);border-radius:8px;overflow:hidden;background:#fff}
.pair figcaption{font-size:13px;font-weight:600;padding:8px 12px;background:var(--panel);border-bottom:1px solid var(--rule)}
.pair.after figcaption{color:var(--green2)}
.pair img{display:block;width:100%;height:auto}
.chg-toc{columns:2;gap:28px;padding-left:22px;margin:0 0 10px}
.chg-toc li{margin:3px 0;break-inside:avoid}
.chg-table td,.chg-table th{vertical-align:top;font-size:15px}
.chg-list{padding-left:22px;line-height:1.55;max-width:80ch}
.chg-list li{margin:6px 0}
.changes code{font:14.5px/1.4 ui-monospace,Consolas,monospace;background:var(--panel);padding:2px 6px;border-radius:4px}
@media(max-width:860px){.pair{grid-template-columns:1fr}.chg-toc{columns:1}}

/* credentials band (home) */
.creds{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.creds div{border-left:3px solid var(--ink);padding-left:16px}
.creds strong{display:block;font-size:18px;margin-bottom:4px}
.creds span{color:var(--ink2);font-size:15.5px;line-height:1.55}
@media (max-width:900px){.creds{grid-template-columns:1fr;gap:18px}}

.pair.single{grid-template-columns:1fr;max-width:640px}

/* ---------- municipality pages (/backflow/<municipality>) ---------- */
.lane-municipality .article-head h1{max-width:20ch}
.munis-line{font-size:15.5px;color:var(--ink2);margin:16px 0 0;max-width:70ch}
.munis-line a{color:var(--ink);font-weight:600;text-decoration:none}
.munis-line a:hover{text-decoration:underline}
.qa-open{border-top:1px solid var(--rule)}
.qa-open .q{padding:20px 0;border-bottom:1px solid var(--rule)}
.qa-open h3{font-size:19px;margin:0 0 8px;line-height:1.3}
.qa-open p{margin:0;color:var(--ink2);font-size:17px;line-height:1.55;max-width:70ch}
.qa-open p+p{margin-top:10px}
.qa-open a{color:var(--green);text-decoration:underline;text-underline-offset:3px}
.recent{margin-top:48px}
.recent h2{font-size:26px;margin:0 0 6px}
.recent .sub{font-size:17px;margin:0 0 22px}
.rgrid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.siblings{margin:36px 0 0;font-size:16px;color:var(--ink2);max-width:70ch;line-height:1.55}
.siblings a{color:var(--ink);font-weight:600;text-decoration:none}
.siblings a:hover{text-decoration:underline}
.muni-table{margin-top:28px;background:#fff;border:1px solid var(--rule);border-radius:8px}
.muni-table table{min-width:640px}
.muni-table th,.muni-table td{padding:12px 16px}
.muni-table thead th{background:#fff}
.muni-table tr.group th{font-size:14px;font-weight:600;color:var(--ink2);background:var(--panel);border-top:1px solid var(--rule);padding:8px 16px;white-space:normal}
.muni-table td:first-child{font-weight:600;white-space:nowrap}
.muni-table td a{text-decoration:none}
.muni-table td a:hover{text-decoration:underline}
.find-yours{margin:28px 0 0;font-size:18px;max-width:66ch}
.find-yours .link{margin-left:6px}
.after-four+.find-yours{margin-top:14px}
.find-yours+.clients-line{margin-top:18px}
.hero.band h2.sub-head,.hero.band p.sub-head{color:#E3EAF2;font-size:19px;font-weight:500;line-height:1.45;margin:-6px 0 16px;max-width:44ch}
.programs{grid-template-columns:repeat(3,1fr)}
@media (max-width:860px){.rgrid.two{grid-template-columns:1fr}.programs-list{columns:1}}

@media (max-width:340px){.logo img{height:34px}}
/* supplier logo strip (Suppliers page) */
.prose .brands{list-style:none;margin:10px 0 8px;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.prose .brands li{display:grid;place-items:center;height:104px;padding:20px 24px;margin:0;background:#fff;border:1px solid var(--rule);border-radius:8px}
.prose .brands img{display:block;width:auto;height:auto;max-width:100%;max-height:50px}
.prose .brands li:nth-child(1) img{max-height:58px}
.prose .brands li:nth-child(2) img{max-height:40px}
.prose .brands li:nth-child(3) img{max-height:58px}
.prose .brands-note{font-size:14px;line-height:1.5;color:var(--ink2);margin:0 0 24px}
@media (max-width:760px){.prose .brands li{padding:16px 14px}}
@media (max-width:480px){.prose .brands{grid-template-columns:1fr;gap:10px}.prose .brands li{height:76px;padding:10px 16px}.prose .brands img{max-width:240px}.prose .brands li:nth-child(1) img,.prose .brands li:nth-child(3) img{max-height:56px}.prose .brands li:nth-child(2) img{max-height:34px}}
footer .foot-creds{font-size:14px;padding-top:0;margin-top:-6px}

@media (max-width:860px){.aside .cta-panel,.article-aside .cta-panel{display:none}}  /* the closing band follows the stacked aside; one call to action is enough */

/* Cloudflare Turnstile widget inside the request forms (Cloudflare builds only) */
.form-foot .cf-turnstile{margin:0 0 14px;min-height:65px}