/* Layout: light "poured concrete" surface, graphite bands for specs, one red accent (Profchem brand). Trowel-swirl canvas in the hero. */
:root{
  --bg:#e8e9e5;          /* fresh concrete */
  --surface:#f4f4f1;
  --ink:#1c1f21;          /* graphite */
  --muted:#5b625f;
  --line:#c9ccc6;
  --red:#d71f26;          /* Profchem red */
  --red-ink:#ffffff;
  --kraft:#c9a979;        /* kraft bag */
  --kraft-ink:#2a2116;
  --band:#24282b;
  --band-ink:#eef0ec;
  --band-muted:#a7aeaa;
  --display:"Unbounded","Arial Black",system-ui,sans-serif;
  --body:"Onest",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  --wrap:1160px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#191b1c;--surface:#222527;--ink:#e9ebe7;--muted:#a3aaa6;--line:#3a3f41;
  --red:#ef3b41;--kraft:#b8975f;--kraft-ink:#1f180e;--band:#101213;--band-ink:#e9ebe7;--band-muted:#9aa19d;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#191b1c;--surface:#222527;--ink:#e9ebe7;--muted:#a3aaa6;--line:#3a3f41;
  --red:#ef3b41;--kraft:#b8975f;--kraft-ink:#1f180e;--band:#101213;--band-ink:#e9ebe7;--band-muted:#9aa19d;color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.6}
a{color:inherit}
img{max-width:100%}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--display);line-height:1.12;text-wrap:balance;margin:0;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(2rem,5.4vw,3.9rem)}
h2{font-size:clamp(1.5rem,3.2vw,2.3rem)}
h3{font-size:1.1rem;font-weight:600}
p{margin:0}
.eyebrow{font-family:var(--mono);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
:focus-visible{outline:3px solid var(--red);outline-offset:3px}

/* header */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--bg);border-bottom:1px solid var(--line)}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:21;background:var(--bg)}
.top .wrap{display:flex;align-items:center;gap:20px;padding-block:12px;flex-wrap:wrap}
.logo{font-family:var(--display);font-weight:800;font-size:1.25rem;text-decoration:none;display:flex;align-items:baseline;gap:8px}
.logo b{color:var(--red)}
.logo small{font-family:var(--mono);font-weight:400;font-size:.68rem;color:var(--muted);letter-spacing:.06em}
.nav{display:flex;gap:18px;flex-wrap:wrap;font-size:.95rem;margin-left:auto}
.nav a{text-decoration:none;color:var(--muted)}
.nav a:hover{color:var(--ink)}
.lang{font-family:var(--mono);font-size:.85rem;display:flex;gap:6px}
.lang a{text-decoration:none;padding:2px 6px;border:1px solid var(--line)}
.lang a[aria-current]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.phone{font-family:var(--mono);font-weight:600;white-space:nowrap;text-decoration:none}
@media (max-width:860px){.nav{display:none}.phone{margin-left:auto}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 22px;font-weight:600;text-decoration:none;border:2px solid var(--ink);background:transparent;color:var(--ink);font:inherit;font-weight:600;cursor:pointer}
.btn.primary{background:var(--red);border-color:var(--red);color:var(--red-ink)}
.btn:hover{transform:translateY(-1px)}

/* hero */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.55;pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:48px;padding-block:72px 64px;align-items:end}
.hero p.lead{font-size:1.2rem;max-width:34em;margin-top:22px;color:var(--muted)}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr;padding-block:48px}}

/* kraft bag label */
.bag{background:var(--kraft);color:var(--kraft-ink);padding:26px 24px;transform:rotate(-1.2deg);box-shadow:0 18px 30px -18px rgba(0,0,0,.45);position:relative}
.bag::before{content:"";position:absolute;inset:8px;border:1.5px dashed rgba(42,33,22,.35);pointer-events:none}
.bag .brand{font-family:var(--display);font-weight:800;font-size:1.6rem;letter-spacing:.02em}
.bag .sub{font-family:var(--mono);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;margin-top:2px}
.bag dl{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;margin:18px 0 0;font-size:.95rem}
.bag dt{font-family:var(--mono);font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;padding-top:3px}
.bag dd{margin:0;font-weight:600}
.bag .price{margin-top:18px;padding-top:14px;border-top:1.5px solid rgba(42,33,22,.4);display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.bag .price strong{font-family:var(--display);font-size:2rem}
.bag .price span{font-family:var(--mono);font-size:.85rem}

/* sections */
section{padding-block:80px}
section.tight{padding-block:56px}
.head{display:grid;gap:12px;margin-bottom:36px;max-width:42em}
.head p{color:var(--muted)}

.uses{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}
.uses div{padding:20px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;gap:6px}
.uses div span{color:var(--muted);font-size:.93rem}
@media (max-width:860px){.uses{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* graphite band */
.band{background:var(--band);color:var(--band-ink)}
.band .eyebrow,.band .head p{color:var(--band-muted)}
.price-table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
.price-table th,.price-table td{text-align:left;padding:16px 12px;border-bottom:1px solid rgba(255,255,255,.12);vertical-align:top}
.price-table th{font-family:var(--mono);font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--band-muted);font-weight:500}
.price-table td.num{font-family:var(--mono);font-weight:600;white-space:nowrap}
.price-table .name{font-weight:600}
.price-table .name small{display:block;font-weight:400;color:var(--band-muted);font-size:.9rem;margin-top:2px}
.tag{display:inline-block;font-family:var(--mono);font-size:.72rem;padding:2px 8px;border:1px solid currentColor;margin-top:6px;letter-spacing:.04em}
.tag.stock{color:#6fd08c}.tag.order{color:var(--kraft)}
.table-scroll{overflow-x:auto}
.note{margin-top:22px;display:flex;gap:14px;align-items:center;flex-wrap:wrap;padding:18px 20px;border:1px solid rgba(255,255,255,.18)}
.note b{color:var(--band-ink)}
.note .btn{border-color:var(--band-ink);color:var(--band-ink);padding:10px 18px}

/* calculator */
.calc{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0;border:2px solid var(--ink);background:var(--surface)}
.calc form{padding:28px;display:grid;gap:20px;border-right:2px solid var(--ink)}
.calc label{display:grid;gap:8px;font-weight:600}
.calc input,.calc select{font:inherit;font-family:var(--mono);font-size:1.1rem;padding:12px 14px;border:1.5px solid var(--line);background:var(--bg);color:var(--ink);width:100%}
.calc .hint{font-weight:400;color:var(--muted);font-size:.88rem}
.calc .out{padding:28px;display:grid;gap:18px;align-content:start}
.calc .out div{display:flex;justify-content:space-between;align-items:baseline;gap:12px;border-bottom:1px dashed var(--line);padding-bottom:12px}
.calc .out span{color:var(--muted)}
.calc .out strong{font-family:var(--display);font-size:1.6rem;font-variant-numeric:tabular-nums}
.calc .out small{color:var(--muted);font-size:.85rem}
@media (max-width:760px){.calc{grid-template-columns:1fr}.calc form{border-right:0;border-bottom:2px solid var(--ink)}}

/* steps */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 32px;counter-reset:s}
.steps li{counter-increment:s;display:grid;gap:8px;padding-top:16px;border-top:2px solid var(--ink)}
.steps li::before{content:counter(s);font-family:var(--mono);font-weight:600;color:var(--red)}
.steps p{color:var(--muted);font-size:.97rem}
@media (max-width:860px){.steps{grid-template-columns:1fr}}

.turnkey{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;padding:36px;border:2px solid var(--ink)}
.turnkey p{color:var(--muted);margin-top:12px;max-width:40em}
@media (max-width:760px){.turnkey{grid-template-columns:1fr;padding:24px}}

.articles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.articles a{display:grid;gap:10px;padding:24px;background:var(--surface);text-decoration:none;border:1px solid var(--line)}
.articles a:hover{border-color:var(--ink)}
.articles p{color:var(--muted);font-size:.95rem}
.articles .more{font-family:var(--mono);font-size:.82rem;color:var(--red)}
@media (max-width:860px){.articles{grid-template-columns:1fr}}

.faq details{border-bottom:1px solid var(--line);padding-block:18px}
.faq summary{cursor:pointer;font-weight:600;font-size:1.05rem}
.faq details p{margin-top:10px;color:var(--muted);max-width:46em}

/* contact */
.contact{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px}
.contact dl{display:grid;grid-template-columns:auto 1fr;gap:10px 20px;margin:24px 0 0}
.contact dt{color:var(--band-muted);font-family:var(--mono);font-size:.8rem;text-transform:uppercase;letter-spacing:.06em;padding-top:3px}
.contact dd{margin:0}
.lead-form{display:grid;gap:14px}
.lead-form label{display:grid;gap:6px;font-size:.92rem;color:var(--band-muted)}
.lead-form input,.lead-form textarea{font:inherit;padding:12px 14px;border:1px solid rgba(255,255,255,.25);background:transparent;color:var(--band-ink)}
.lead-form .btn{justify-self:start}
.lead-form .ok{color:#6fd08c;font-size:.92rem}
@media (max-width:760px){.contact{grid-template-columns:1fr}}

footer{padding-block:28px;font-size:.88rem;color:var(--muted)}
footer .wrap{display:flex;gap:16px;flex-wrap:wrap;justify-content:space-between}

/* article pages */
.article{padding-block:56px 80px}
.article .wrap{max-width:820px}
.crumbs{font-family:var(--mono);font-size:.8rem;color:var(--muted);margin-bottom:22px}
.crumbs a{color:var(--muted)}
.article h1{font-size:clamp(1.8rem,4.4vw,2.8rem)}
.article .intro{font-size:1.18rem;color:var(--muted);margin-top:20px}
.prose{margin-top:36px;display:grid;gap:18px;max-width:65ch}
.prose h2{font-size:1.45rem;margin-top:22px}
.prose ul,.prose ol{margin:0;padding-left:1.3em;display:grid;gap:8px}
.prose table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums}
.prose th,.prose td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
.prose th{font-family:var(--mono);font-size:.76rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:500}
.callout{background:var(--surface);border-left:4px solid var(--red);padding:20px 22px;display:grid;gap:12px}
.callout .btn{justify-self:start;padding:10px 18px}

/* spec sheet inside the graphite band */
.specs{margin-top:36px;display:grid;gap:16px}
.specs dl{margin:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid rgba(255,255,255,.15)}
.specs dl div{padding:14px 12px 14px 0;border-bottom:1px solid rgba(255,255,255,.15);display:grid;gap:4px}
.specs dt{font-family:var(--mono);font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--band-muted)}
.specs dd{margin:0;font-weight:600;font-variant-numeric:tabular-nums}
@media (max-width:860px){.specs dl{grid-template-columns:repeat(2,minmax(0,1fr))}}

.calc label.check{display:flex;align-items:center;gap:10px;font-weight:500}
.calc label.check input{width:20px;height:20px;accent-color:var(--red)}
.related .rel-price{color:var(--ink);font-size:.95rem}
.related .rel-price b{font-family:var(--mono)}

[hidden]{display:none!important}

/* photo gallery */
.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-auto-rows:220px;gap:12px}
.gallery figure,.ship{margin:0;position:relative;overflow:hidden;background:var(--surface)}
.gallery img{width:100%;height:100%;object-fit:cover;display:block}
.gallery figcaption{position:absolute;left:0;right:0;bottom:0;padding:28px 14px 12px;font-size:.88rem;color:#fff;background:linear-gradient(transparent,rgba(0,0,0,.65))}
.gallery .g-main{grid-column:span 2;grid-row:span 2}
.gallery .g-tall{grid-row:span 2}
.gallery .g-wide{grid-column:span 2}
@media (max-width:760px){.gallery{grid-template-columns:1fr;grid-auto-rows:240px}.gallery .g-main,.gallery .g-wide{grid-column:auto}.gallery .g-main{grid-row:span 1}.gallery .g-tall{grid-row:span 2}}
.ship{margin-bottom:28px;max-width:720px}
.ship img{width:100%;height:auto;display:block}
.ship figcaption{font-size:.88rem;color:var(--muted);padding-top:8px;background:var(--bg)}

/* case studies */
.cases{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.case{border:2px solid var(--ink);padding:24px;display:grid;gap:10px;align-content:start;background:var(--surface)}
.case-tag{font-family:var(--mono);font-size:.76rem;letter-spacing:.06em;text-transform:uppercase;color:var(--red)}
.case p{color:var(--muted)}
.case dl{margin:8px 0 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border-top:1px solid var(--line)}
.case dl div{padding:10px 8px 10px 0;border-bottom:1px solid var(--line);display:grid;gap:2px}
.case dt{font-size:.82rem;color:var(--muted)}
.case dd{margin:0;font-family:var(--display);font-weight:600;font-size:1.15rem;font-variant-numeric:tabular-nums}
.case-note{margin-top:14px;font-size:.85rem;color:var(--muted)}
@media (max-width:760px){.cases{grid-template-columns:1fr}}

/* stats strip */
.stats{background:var(--band);color:var(--band-ink)}
.stats .wrap{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;padding-block:28px}
.stats .wrap>div{display:grid;gap:4px;border-left:3px solid var(--red);padding-left:16px}
.stats strong{font-family:var(--display);font-size:clamp(1.5rem,3vw,2.2rem);font-variant-numeric:tabular-nums;line-height:1.1}
.stats span{color:var(--band-muted);font-size:.95rem}
@media (max-width:760px){.stats .wrap{grid-template-columns:1fr;gap:18px}}

.cases{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.case-who{font-size:.9rem;color:var(--ink);margin-top:auto;padding-top:6px}
.case-who a{color:var(--red)}
.case-total{margin-top:20px;padding:16px 20px;border-left:4px solid var(--red);background:var(--surface)}