:root{
  --ink:#13212e; --ink-2:#3d4b59; --muted:#66727e; --line:#dde2e6; --paper:#ffffff; --paper-2:#f3f5f6;
  --steel:#1d3346; --accent:#e4572e; --accent-ink:#ffffff; --accent-2:#c8441e; --ok:#1f7a4d;
  --card:#ffffff; --img-bg:#eef1f3; --radius:10px; --wrap:1200px;
  --font-h:"Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-b:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --ink:#e8edf1; --ink-2:#c3ccd4; --muted:#9aa6b1; --line:#2c3a47; --paper:#0f1821; --paper-2:#152230;
    --steel:#0b131b; --card:#172431; --img-bg:#e9edf0; --accent:#f06a43; --accent-2:#ff8a63;
  }
}
:root[data-theme="dark"]{
  --ink:#e8edf1; --ink-2:#c3ccd4; --muted:#9aa6b1; --line:#2c3a47; --paper:#0f1821; --paper-2:#152230;
  --steel:#0b131b; --card:#172431; --img-bg:#e9edf0; --accent:#f06a43; --accent-2:#ff8a63;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 var(--font-b);overflow-x:hidden}
img,video{max-width:100%;height:auto;display:block}
a{color:inherit}
p a, li a, td a, .link{color:var(--accent);text-underline-offset:3px}
h1,h2,h3,h4{font-family:var(--font-h);line-height:1.15;letter-spacing:-.01em;margin:0 0 .5em;text-wrap:balance}
h1{font-size:clamp(1.9rem,4.2vw,3rem);font-weight:800}
h2{font-size:clamp(1.45rem,2.6vw,2rem);font-weight:750}
h3{font-size:1.15rem;font-weight:700}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:8px;background:#fff;padding:8px;z-index:99}
.eyebrow{font:600 .78rem/1 var(--font-h);text-transform:uppercase;letter-spacing:.12em;color:var(--accent);margin-bottom:.8rem;display:block}
.muted{color:var(--muted)}
section{padding:64px 0}
.alt{background:var(--paper-2)}

/* header */
.topbar{background:var(--steel);color:#cfd8df;font-size:.85rem}
.topbar .wrap{display:flex;gap:20px;justify-content:flex-end;align-items:center;min-height:36px;flex-wrap:wrap}
.topbar a{color:#fff;text-decoration:none}
header.site{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--paper) 94%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;gap:24px;min-height:68px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font:800 1.2rem/1 var(--font-h);letter-spacing:.02em}
.logo svg{flex:none}
nav.main{margin-left:auto}
nav.main ul{list-style:none;margin:0;padding:0;display:flex;gap:4px;align-items:center}
nav.main a{display:block;padding:10px 12px;text-decoration:none;font-weight:600;font-size:.95rem;border-radius:6px}
nav.main a:hover,nav.main a[aria-current="page"]{color:var(--accent)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:8px;border:2px solid transparent;font:700 .95rem/1.1 var(--font-h);text-decoration:none;cursor:pointer;transition:.15s}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover{background:var(--accent-2)}
.btn-ghost{border-color:currentColor;color:inherit;background:transparent}
.btn-ghost:hover{color:var(--accent)}
nav.main .btn{color:#fff;padding:10px 16px;margin-left:8px}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 10px;color:var(--ink)}
@media (max-width:960px){
  .menu-btn{display:block}
  nav.main{display:none;position:absolute;left:0;right:0;top:100%;background:var(--paper);border-bottom:1px solid var(--line)}
  nav.main.open{display:block}
  nav.main ul{flex-direction:column;align-items:stretch;padding:8px 16px 16px}
  nav.main .btn{margin:8px 0 0}
}

/* hero */
.hero{background:linear-gradient(180deg,var(--paper-2),var(--paper));padding:56px 0 40px;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
.hero p.lead{font-size:1.15rem;color:var(--ink-2);max-width:38em}
.hero-img{background:var(--img-bg);border-radius:16px;padding:12px}.hero-img img{width:100%;max-height:520px;object-fit:contain}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}
.ticks{list-style:none;padding:0;margin:20px 0 0;display:grid;grid-template-columns:1fr 1fr;gap:8px 20px;font-size:.95rem}
.ticks li{padding-left:26px;position:relative}
.ticks li:before{content:"";position:absolute;left:0;top:.45em;width:14px;height:8px;border:solid var(--accent);border-width:0 0 3px 3px;transform:rotate(-45deg)}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr}.ticks{grid-template-columns:1fr}}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-top:8px}
.stats div{background:var(--card);padding:20px}
.stats b{display:block;font:800 1.8rem/1 var(--font-h);color:var(--accent)}
.stats span{font-size:.9rem;color:var(--muted)}
@media (max-width:700px){.stats{grid-template-columns:1fr 1fr}}

/* cards */
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)} .g2{grid-template-columns:repeat(2,1fr)} .g4{grid-template-columns:repeat(4,1fr)}
@media (max-width:960px){.g3,.g4{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.g3,.g2,.g4{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;text-decoration:none;transition:.15s}
a.card:hover{border-color:var(--accent);transform:translateY(-2px)}
.card .ph{background:var(--img-bg);aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;padding:14px}
.card .ph{overflow:hidden}.card .ph img{width:100%;height:100%;object-fit:contain}
.card .bd{padding:18px 18px 20px;display:flex;flex-direction:column;gap:6px;flex:1}
.card .bd p{margin:0;color:var(--ink-2);font-size:.95rem}
.card .more{margin-top:auto;padding-top:8px;color:var(--accent);font-weight:700;font-size:.9rem}
.noimg{color:var(--muted);font:600 .9rem var(--font-h);text-align:center}

/* breadcrumb */
.crumbs{font-size:.85rem;color:var(--muted);padding:16px 0 0}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li:before{content:"/";margin-right:6px;color:var(--line)}
.crumbs a{text-decoration:none}

/* product page */
.p-top{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:24px 0 48px;align-items:start}
@media (max-width:900px){.p-top{grid-template-columns:1fr}}
.p-media .main{background:var(--img-bg);border-radius:14px;padding:16px;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center}
.p-media .main{overflow:hidden}.p-media .main img{width:100%;height:100%;object-fit:contain}
.thumbs{display:flex;gap:10px;margin-top:10px;flex-wrap:wrap}
.thumbs button{background:var(--img-bg);border:2px solid transparent;border-radius:8px;padding:4px;width:78px;height:78px;cursor:pointer}
.thumbs button[aria-pressed="true"]{border-color:var(--accent)}
.thumbs img{width:100%;height:100%;object-fit:contain}
.models{font:700 .9rem var(--font-h);color:var(--muted);margin:-.2em 0 .8em}
.facts{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin:20px 0}
.facts div{padding:12px 14px;border-bottom:1px solid var(--line);background:var(--card)}
.facts div:nth-child(odd){border-right:1px solid var(--line)}
.facts dt{font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.facts dd{margin:2px 0 0;font-weight:700}
@media (max-width:480px){.facts{grid-template-columns:1fr}.facts div:nth-child(odd){border-right:0}}
.answer{border-left:4px solid var(--accent);background:var(--paper-2);padding:16px 20px;border-radius:0 var(--radius) var(--radius) 0;margin:0 0 24px}
.answer p{margin:0}
.prose{max-width:820px}
.prose ul{padding-left:1.2em}.prose li{margin:.3em 0}
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);margin:16px 0;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;min-width:520px;font-size:.93rem;background:var(--card)}
th,td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
thead th{background:var(--steel);color:#fff;font-family:var(--font-h)}
tbody th{width:28%;color:var(--ink-2);font-weight:600;background:var(--paper-2)}
tbody tr:last-child>*{border-bottom:0}
.video-box{border-radius:14px;overflow:hidden;background:#000;max-width:880px}
details.faq{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);margin:10px 0}
details.faq summary{cursor:pointer;padding:16px 48px 16px 18px;font:700 1rem/1.4 var(--font-h);list-style:none;position:relative}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary:after{content:"+";position:absolute;right:18px;top:12px;font-size:1.4rem;color:var(--accent)}
details.faq[open] summary:after{content:"–"}
details.faq .a{padding:0 18px 16px;color:var(--ink-2)}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.steps li{list-style:none;counter-increment:s;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.steps li:before{content:counter(s,decimal-leading-zero);font:800 1.6rem var(--font-h);color:var(--accent);display:block;margin-bottom:6px}
@media (max-width:860px){.steps{grid-template-columns:1fr 1fr}} @media (max-width:520px){.steps{grid-template-columns:1fr}}
.steps{padding:0;margin:0}

/* form */
.quote{background:var(--steel);color:#e9eef2;border-radius:16px;padding:32px}
.quote h2{color:#fff}
.quote p{color:#c1ccd5}
form.inq{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px}
form.inq .full{grid-column:1/-1}
form.inq label{font-size:.85rem;font-weight:600;display:flex;flex-direction:column;gap:6px;color:#dfe6eb}
form.inq input,form.inq select,form.inq textarea{font:inherit;padding:11px 12px;border-radius:8px;border:1px solid #3a5166;background:#0f1e2b;color:#fff;width:100%}
form.inq input:focus,form.inq select:focus,form.inq textarea:focus{outline:2px solid var(--accent);border-color:transparent}
form.inq .hp{position:absolute;left:-9999px}
form.inq small{color:#9fb0be}
@media (max-width:620px){form.inq{grid-template-columns:1fr}.quote{padding:22px}}
.form-msg{grid-column:1/-1;font-weight:700}

/* footer */
footer.site{background:var(--steel);color:#b8c4ce;padding:56px 0 24px;font-size:.92rem}
footer.site h3{color:#fff;font-size:1rem}
footer.site a{color:#dfe6eb;text-decoration:none}
footer.site a:hover{color:#fff;text-decoration:underline}
footer.site ul{list-style:none;padding:0;margin:0}
footer.site li{margin:6px 0}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
@media (max-width:860px){.fgrid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.fgrid{grid-template-columns:1fr}}
.legal{border-top:1px solid #2d4457;margin-top:40px;padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.wa{position:fixed;right:18px;bottom:18px;z-index:60;width:56px;height:56px;border-radius:50%;background:#25d366;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(0,0,0,.25)}
.wa svg{width:30px;height:30px;fill:#fff}
.article img.cover{border-radius:14px;background:var(--img-bg);max-height:420px;width:100%;object-fit:contain;padding:12px}
.tag{display:inline-block;font:700 .75rem var(--font-h);text-transform:uppercase;letter-spacing:.08em;color:var(--accent)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
@media (max-width:860px){.split{grid-template-columns:1fr}}
.ph-box{background:var(--img-bg);border:2px dashed #b5bfc7;border-radius:14px;aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;text-align:center;color:#55616c;padding:20px;font:600 .95rem var(--font-h)}