:root{color-scheme:light}
html{-webkit-text-size-adjust:100%}
body{margin:0}
img{max-width:100%}
[hidden]{display:none!important}
.certnames{font-weight:600;letter-spacing:.02em}
.ferr{margin:0}

/* Layout concept: a trade-sheet aesthetic. Quiet navy and ivory page, champagne used only for price, SKU and action; the three products carry all the colour. */
:root{
  --bg:#f8f6f1; --surface:#ffffff; --tile:#eeebe4; --fg:#101c2e; --muted:#58627a; --line:#dcd7cc;
  --accent:#8b6a36; --accent-bg:#c9a96b; --accent-fg:#101c2e; --band:#0f1c30; --band-fg:#f1ece0; --band-muted:#aab2c4;
  --ok:#1f7a4d; --warn:#9a5b00; --bad:#a3302a;
  --f-ui:"Instrument Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-display:"Instrument Serif",Georgia,"Times New Roman",serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0b1422; --surface:#122036; --tile:#e8e4da; --fg:#efe9dc; --muted:#a0a9bc; --line:#26354f;
  --accent:#d5b57b; --accent-bg:#d5b57b; --accent-fg:#0b1422; --band:#060d18; --band-fg:#efe9dc; --band-muted:#8f99ae;
  --ok:#5fcf9a; --warn:#e8b25e; --bad:#ef8a83; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0b1422; --surface:#122036; --tile:#e8e4da; --fg:#efe9dc; --muted:#a0a9bc; --line:#26354f;
  --accent:#d5b57b; --accent-bg:#d5b57b; --accent-fg:#0b1422; --band:#060d18; --band-fg:#efe9dc; --band-muted:#8f99ae;
  --ok:#5fcf9a; --warn:#e8b25e; --bad:#ef8a83; color-scheme:dark}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--fg);font-family:var(--f-ui);font-size:16px;line-height:1.55;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:0;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--bg)}
a{color:inherit}
h1,h2,h3{font-family:var(--f-display);font-weight:400;line-height:1.08;margin:0;text-wrap:balance;letter-spacing:-.01em}
h1{font-size:clamp(2.5rem,6.2vw,4.6rem)} h2{font-size:clamp(1.9rem,3.6vw,2.8rem)} h3{font-size:1.5rem}
h4{margin:0;font-size:1rem;font-weight:600}
p{margin:0}
.wrap{max-width:1180px;margin:0 auto}
.eyebrow{font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:600}
.mono{font-family:var(--f-mono);font-size:.82rem}
.muted{color:var(--muted)}
.sec{padding-block:clamp(48px,8vw,96px)}
.sec>.wrap{display:flex;flex-direction:column;gap:32px}
.lead{font-size:1.15rem;color:var(--muted);max-width:60ch}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}
/* header */
header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:var(--bg);border-bottom:1px solid var(--line);margin-inline:calc(-1*max(16px,env(safe-area-inset-left,0px)));padding-inline:max(16px,env(safe-area-inset-left,0px))}
.bar{display:flex;align-items:center;gap:20px;min-height:68px}
.logo{font-family:var(--f-ui);font-weight:700;letter-spacing:.34em;font-size:1.05rem;text-decoration:none;display:flex;align-items:center;gap:10px}
.logo i{width:10px;height:10px;background:var(--accent-bg);display:inline-block;transform:rotate(45deg)}
nav.main{display:flex;gap:22px;margin-left:12px;flex:1}
nav.main a{text-decoration:none;font-size:.93rem;color:var(--muted);padding:6px 0;border-bottom:2px solid transparent}
nav.main a:hover,nav.main a.on{color:var(--fg);border-color:var(--accent-bg)}
.tools{display:flex;gap:8px;align-items:center}
.btn{font:inherit;font-weight:600;font-size:.92rem;border:1px solid var(--fg);background:transparent;color:var(--fg);padding:10px 18px;border-radius:2px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;line-height:1.2;text-align:center}
.btn:hover{background:var(--fg);color:var(--bg)}
.btn.pri{background:var(--accent-bg);border-color:var(--accent-bg);color:var(--accent-fg)}
.btn.pri:hover{filter:brightness(1.07);background:var(--accent-bg);color:var(--accent-fg)}
.btn.sm{padding:7px 12px;font-size:.84rem}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.chip{font:inherit;font-size:.86rem;border:1px solid var(--line);background:var(--surface);color:var(--fg);padding:6px 12px;border-radius:99px;cursor:pointer}
.chip.on{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.count{background:var(--accent-bg);color:var(--accent-fg);border-radius:99px;font-size:.72rem;min-width:19px;height:19px;display:inline-grid;place-items:center;padding:0 5px;font-weight:700}
.burger{display:none}
@media(max-width:900px){nav.main{display:none;position:absolute;left:0;right:0;top:68px;background:var(--bg);flex-direction:column;padding:12px max(16px,env(safe-area-inset-left,0px)) 20px;border-bottom:1px solid var(--line);margin:0;gap:4px}nav.main.open{display:flex}nav.main a{padding:12px 0}.burger{display:inline-flex}.hide-m{display:none!important}.bar{gap:8px}.logo{flex:1}}
/* hero */
.hero{padding-block:clamp(36px,6vw,72px);display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,5vw,64px);align-items:center}
.hero h1 em{font-style:italic;color:var(--accent)}
.hero .lead{margin-top:20px}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero-fig{background:var(--tile);aspect-ratio:1/1.02;display:grid;place-items:center;position:relative;max-width:100%;overflow:hidden}
.hero-fig img{width:78%;height:auto;mix-blend-mode:multiply}
.hero-fig figcaption{position:absolute;left:14px;bottom:12px;font-family:var(--f-mono);font-size:.74rem;color:var(--muted)}
.hero-fig{margin:0}
@media(max-width:860px){.hero{grid-template-columns:1fr}}
/* ledger */
.ledger{width:100%;border-collapse:collapse;font-size:.92rem}
.ledger th{text-align:left;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:600;padding:10px 12px;border-bottom:1px solid var(--fg)}
.ledger td{padding:14px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
.ledger td.n,.ledger th.n{text-align:right;font-variant-numeric:tabular-nums}
.ledger .thumb{width:44px;height:44px;object-fit:contain;background:var(--tile);display:block}
.scroll{overflow-x:auto;max-width:100%}
.scroll table{min-width:620px}
/* grids & cards */
.grid{display:grid;gap:24px;grid-template-columns:repeat(auto-fill,minmax(min(100%,270px),1fr))}
.g4{display:grid;gap:28px;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr))}
.pcard{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);min-width:0}
.pimg{background:var(--tile);aspect-ratio:1/1;display:grid;place-items:center;cursor:pointer;position:relative;overflow:hidden;border:0;padding:0;width:100%}
.pimg img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply}
.pbody{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.pbody h3{font-size:1.4rem}
.price{font-weight:700;font-size:1.15rem;font-variant-numeric:tabular-nums}
.price small{font-weight:400;color:var(--muted);font-size:.8rem}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.sp{flex:1}
.tag{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;border:1px solid var(--line);padding:2px 8px;color:var(--muted);border-radius:2px}
.tag.ok{color:var(--ok);border-color:currentColor}.tag.warn{color:var(--warn);border-color:currentColor}
.cat-card{display:flex;flex-direction:column;gap:12px;text-decoration:none;min-width:0}
.cat-card .pic{background:var(--tile);aspect-ratio:4/3;display:grid;place-items:center;overflow:hidden}
.cat-card img{height:100%;width:100%;object-fit:contain;mix-blend-mode:multiply}
.cat-card:hover h3{text-decoration:underline;text-decoration-color:var(--accent-bg);text-underline-offset:6px}
/* bands */
.band{background:var(--band);color:var(--band-fg);margin-inline:calc(-1*max(16px,env(safe-area-inset-left,0px)));padding-inline:max(16px,env(safe-area-inset-left,0px))}
.band .muted,.band .lead{color:var(--band-muted)}
.band .eyebrow{color:var(--accent-bg)}
.band .btn{border-color:var(--band-fg);color:var(--band-fg)}.band .btn:hover{background:var(--band-fg);color:var(--band)}
.band .btn.pri{background:var(--accent-bg);border-color:var(--accent-bg);color:#101c2e}
.steps{display:grid;gap:0;grid-template-columns:repeat(auto-fit,minmax(min(100%,190px),1fr));border-top:1px solid var(--line)}
.band .steps{border-color:#2a3a57}
.step{padding:20px 18px 20px 0;display:flex;flex-direction:column;gap:8px}
.step b{font-family:var(--f-mono);color:var(--accent-bg);font-weight:500;font-size:.85rem}
.pts{display:grid;gap:20px 40px;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}
.pts>div{display:flex;flex-direction:column;gap:6px;border-top:1px solid var(--line);padding-top:14px}
.band .pts>div{border-color:#2a3a57}
/* page */
.crumbs{font-size:.84rem;color:var(--muted);padding-top:22px}
.crumbs a{text-decoration:none}.crumbs a:hover{text-decoration:underline}
.pagehead{padding-block:clamp(28px,5vw,56px) 8px;display:flex;flex-direction:column;gap:14px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,5vw,64px)}
@media(max-width:820px){.two{grid-template-columns:1fr}}
.prose{display:flex;flex-direction:column;gap:14px;max-width:70ch}
.prose h2{font-size:1.7rem;margin-top:18px}
.prose h3{font-size:1.3rem;margin-top:8px}
.prose ul{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:6px}
.note{border-left:3px solid var(--accent-bg);background:var(--surface);padding:14px 16px;font-size:.92rem}
.note.warn{border-color:var(--warn)}
/* catalog */
.catalog{display:grid;grid-template-columns:240px 1fr;gap:32px;align-items:start}
.filters{display:flex;flex-direction:column;gap:18px;position:sticky;top:calc(88px + env(safe-area-inset-top,0px))}
.filters fieldset{border:0;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
.filters legend{font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:6px;padding:0}
@media(max-width:860px){.catalog{grid-template-columns:1fr}.filters{position:static}}
input,select,textarea{font:inherit;color:var(--fg);background:var(--surface);border:1px solid var(--line);padding:11px 12px;border-radius:2px;width:100%;min-width:0}
textarea{min-height:110px;resize:vertical}
label{font-size:.86rem;font-weight:600;display:flex;flex-direction:column;gap:6px}
label.inline{flex-direction:row;align-items:center;font-weight:400;gap:8px}
label.inline input{width:auto}
.form{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form .full{grid-column:1/-1}
@media(max-width:620px){.form{grid-template-columns:1fr}}
.panel{background:var(--surface);border:1px solid var(--line);padding:clamp(18px,3vw,32px)}
/* product page */
.pp{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(24px,5vw,60px);align-items:start;padding-top:24px}
@media(max-width:860px){.pp{grid-template-columns:1fr}}
.gal{display:flex;flex-direction:column;gap:12px;min-width:0}
.gal .main{background:var(--tile);aspect-ratio:1/1;display:grid;place-items:center;overflow:hidden}
.gal .main img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply}
.thumbs{display:flex;gap:8px;flex-wrap:wrap}
.thumbs button{width:68px;height:68px;padding:0;border:1px solid var(--line);background:var(--tile);cursor:pointer}
.thumbs button.on{border-color:var(--fg);outline:1px solid var(--fg)}
.thumbs img{width:100%;height:100%;object-fit:contain;mix-blend-mode:multiply}
.buy{display:flex;flex-direction:column;gap:18px;min-width:0}
.buy .big{font-size:2rem;font-weight:700;font-variant-numeric:tabular-nums}
.qty{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.qty input{width:110px}
table.spec{width:100%;border-collapse:collapse;font-size:.93rem}
table.spec th{text-align:left;font-weight:500;color:var(--muted);width:42%;padding:10px 0;border-bottom:1px solid var(--line);vertical-align:top}
table.spec td{padding:10px 0;border-bottom:1px solid var(--line);vertical-align:top}
.flag{color:var(--warn)}
/* modal & toast */
.ov{position:fixed;inset:0;background:rgba(6,12,22,.62);z-index:80;display:grid;place-items:center;padding:16px}
.modal{background:var(--bg);width:min(980px,100%);max-height:calc(100dvh - 32px);overflow:auto;padding:clamp(18px,3vw,32px);position:relative}
.x{position:absolute;right:10px;top:10px}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(20px + env(safe-area-inset-bottom,0px));background:var(--fg);color:var(--bg);padding:12px 18px;z-index:90;font-size:.9rem;max-width:calc(100% - 32px)}
.cookie{position:fixed;left:max(12px,env(safe-area-inset-left,0px));right:max(12px,env(safe-area-inset-right,0px));bottom:calc(12px + env(safe-area-inset-bottom,0px));z-index:70;background:var(--surface);border:1px solid var(--fg);padding:16px;display:flex;gap:16px;align-items:center;flex-wrap:wrap;max-width:760px}
.cookie p{flex:1;min-width:220px;font-size:.88rem}
/* footer */
footer.foot{margin-inline:calc(-1*max(16px,env(safe-area-inset-left,0px)));padding-inline:max(16px,env(safe-area-inset-left,0px));padding-block:56px calc(32px + env(safe-area-inset-bottom,0px))}
.fgrid{display:grid;gap:32px;grid-template-columns:1.4fr repeat(3,1fr)}
@media(max-width:860px){.fgrid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.fgrid{grid-template-columns:1fr}}
.fgrid h4{font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--band-muted);margin-bottom:12px}
.fgrid ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;font-size:.92rem}
.fgrid a{text-decoration:none}.fgrid a:hover{text-decoration:underline}
.legal{border-top:1px solid #2a3a57;margin-top:36px;padding-top:20px;font-size:.82rem;color:var(--band-muted);display:flex;flex-direction:column;gap:6px}
.faq details{border-top:1px solid var(--line);padding:16px 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::after{content:"+";color:var(--accent);font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:"\2212"}
.faq details p{margin-top:10px;color:var(--muted);max-width:70ch}
.tot{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px solid var(--line);font-variant-numeric:tabular-nums}
.tot.grand{font-weight:700;font-size:1.2rem;border-bottom:0}
.stripebox{border:1px dashed var(--muted);padding:16px;display:flex;flex-direction:column;gap:10px;background:var(--bg)}
.stripebox .fake{height:42px;background:var(--surface);border:1px solid var(--line);display:flex;align-items:center;padding:0 12px;color:var(--muted);font-family:var(--f-mono);font-size:.82rem}
@media (prefers-reduced-motion:no-preference){.pcard,.btn{transition:border-color .15s,background .15s,filter .15s}.pcard:hover{border-color:var(--fg)}}

.vlabel{font-size:.86rem;margin-bottom:8px}
.vars{display:flex;gap:8px;flex-wrap:wrap}
.vopt{font:inherit;font-size:.88rem;display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--surface);color:var(--fg);padding:5px 12px 5px 5px;border-radius:2px;cursor:pointer}
.vopt img{width:40px;height:40px;object-fit:contain;background:var(--tile)}
.vopt.on{border-color:var(--fg);outline:1px solid var(--fg)}
.trust{display:grid;gap:0;grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),1fr));border-block:1px solid var(--line)}
.trust>div{padding:18px 18px 18px 0;display:flex;flex-direction:column;gap:2px}
.trust b{font-size:.95rem}.trust span{color:var(--muted);font-size:.86rem}