:root{
  --navy:#0d2137; --navy2:#123049; --orange:#f97316; --orange-d:#ea6a0a;
  --ink:#1c2b3a; --mut:#5b6b7c; --bg:#f6f8fa; --line:#e5ebf1; --white:#fff;
  --radius:14px; --shadow:0 8px 28px rgba(13,33,55,.10);
}
*{box-sizing:border-box; margin:0; padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink); background:var(--white); line-height:1.6; -webkit-font-smoothing:antialiased}
img{max-width:100%; display:block}
a{color:inherit; text-decoration:none}
.wrap{max-width:1160px; margin:0 auto; padding:0 20px}
/* header */
.hdr{position:sticky; top:0; z-index:50; background:rgba(13,33,55,.96); backdrop-filter:blur(8px); color:#fff}
.hdr-in{display:flex; align-items:center; justify-content:space-between; height:64px}
.logo{display:flex; align-items:center; gap:10px; font-weight:800; font-size:20px; letter-spacing:.5px}
.logo-mark{width:34px; height:34px; border-radius:9px; background:linear-gradient(135deg,var(--orange),#ffb020);
  display:flex; align-items:center; justify-content:center; font-weight:900; color:#0d2137; font-size:18px}
.nav{display:flex; gap:26px; font-size:15px; font-weight:500}
.nav a{opacity:.85} .nav a:hover,.nav a.on{opacity:1; color:var(--orange)}
.nav-cta{background:var(--orange); color:#fff!important; opacity:1!important; padding:9px 18px; border-radius:999px; font-weight:700}
.nav-cta:hover{background:var(--orange-d)}
.burger{display:none; background:none; border:0; color:#fff; font-size:26px; cursor:pointer}
/* hero */
.hero{position:relative; color:#fff; background:var(--navy); overflow:hidden}
.hero-bg{position:absolute; inset:0; background-size:cover; background-position:center; opacity:.5}
.hero-in{position:relative; padding:96px 0 84px; max-width:1160px; margin:0 auto; padding-left:20px; padding-right:20px}
.kicker{display:inline-block; background:rgba(249,115,22,.16); border:1px solid rgba(249,115,22,.5);
  color:#ffb37a; font-size:13px; font-weight:700; letter-spacing:1.5px; text-transform:uppercase;
  padding:7px 14px; border-radius:999px; margin-bottom:20px}
.hero h1{font-size:clamp(34px,6vw,58px); line-height:1.12; font-weight:800; max-width:640px; margin-bottom:18px}
.hero h1 em{font-style:normal; color:var(--orange)}
.hero p.sub{font-size:18px; opacity:.88; max-width:560px; margin-bottom:30px}
.btnrow{display:flex; gap:14px; flex-wrap:wrap}
.btn{display:inline-flex; align-items:center; gap:8px; padding:14px 26px; border-radius:999px;
  font-weight:700; font-size:16px; transition:.2s}
.btn-o{background:var(--orange); color:#fff} .btn-o:hover{background:var(--orange-d); transform:translateY(-1px)}
.btn-g{background:rgba(255,255,255,.12); color:#fff; border:1px solid rgba(255,255,255,.35)}
.btn-g:hover{background:rgba(255,255,255,.2)}
.trust{display:flex; gap:26px; flex-wrap:wrap; margin-top:38px; font-size:14px; opacity:.85}
.trust span::before{content:"✓ "; color:var(--orange); font-weight:800}
/* sections */
.sec{padding:72px 0}
.sec.alt{background:var(--bg)}
.sec-k{color:var(--orange); font-weight:800; letter-spacing:2px; font-size:13px; text-transform:uppercase; margin-bottom:10px}
.sec h2{font-size:clamp(26px,4vw,36px); font-weight:800; margin-bottom:12px; color:var(--navy)}
.sec p.lead{color:var(--mut); font-size:17px; max-width:640px; margin-bottom:36px}
/* cards */
.grid{display:grid; gap:22px}
.g4{grid-template-columns:repeat(4,1fr)} .g3{grid-template-columns:repeat(3,1fr)} .g2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff; border:1px solid var(--line); border-radius:var(--radius); overflow:hidden;
  box-shadow:var(--shadow); transition:.2s; display:flex; flex-direction:column}
.card:hover{transform:translateY(-4px)}
.card .ph{aspect-ratio:4/3; overflow:hidden; background:#dfe7ee}
.card .ph img{width:100%; height:100%; object-fit:cover; transition:.4s}
.card:hover .ph img{transform:scale(1.05)}
.card .bd{padding:20px; display:flex; flex-direction:column; gap:8px; flex:1}
.card .cat{font-size:12px; font-weight:800; letter-spacing:1.2px; text-transform:uppercase; color:var(--orange)}
.card h3{font-size:19px; color:var(--navy)}
.card p{font-size:14.5px; color:var(--mut); flex:1}
.card .go{font-weight:700; color:var(--navy); font-size:15px}
.card .go::after{content:" →"; color:var(--orange)}
/* filter */
.filters{display:flex; gap:10px; flex-wrap:wrap; margin-bottom:30px}
.fbtn{border:1px solid var(--line); background:#fff; padding:10px 20px; border-radius:999px;
  font-weight:600; font-size:14px; cursor:pointer; color:var(--mut)}
.fbtn.on,.fbtn:hover{background:var(--navy); color:#fff; border-color:var(--navy)}
/* product detail */
.pd{display:grid; grid-template-columns:1.1fr 1fr; gap:40px; align-items:start}
.gal-main{border-radius:var(--radius); overflow:hidden; aspect-ratio:4/3; background:#dfe7ee; box-shadow:var(--shadow)}
.gal-main img{width:100%; height:100%; object-fit:cover}
.gal-th{display:grid; grid-template-columns:repeat(4,1fr); gap:10px; margin-top:10px}
.gal-th img{border-radius:10px; aspect-ratio:4/3; object-fit:cover; cursor:pointer; border:2px solid transparent; opacity:.75}
.gal-th img.on{border-color:var(--orange); opacity:1}
.pd h1{font-size:clamp(28px,4vw,38px); color:var(--navy); margin:6px 0 12px}
.pd .tag{color:var(--orange); font-weight:700; font-size:15px}
.pd .desc{color:var(--mut); font-size:16.5px; margin:14px 0 22px}
.feats{list-style:none; display:grid; gap:10px; margin-bottom:24px}
.feats li{padding-left:30px; position:relative; font-size:15.5px}
.feats li::before{content:"✓"; position:absolute; left:0; top:0; color:var(--orange); font-weight:900}
.swatches{display:flex; gap:10px; flex-wrap:wrap; margin:8px 0 26px}
.sw{font-size:13px; border:1px solid var(--line); border-radius:999px; padding:7px 14px; background:var(--bg); color:var(--mut)}
.spec-t{width:100%; border-collapse:collapse; font-size:14.5px; margin-bottom:26px}
.spec-t td{padding:10px 4px; border-bottom:1px solid var(--line)}
.spec-t td:first-child{color:var(--mut); width:42%}
/* steps */
.steps{display:grid; grid-template-columns:repeat(4,1fr); gap:22px; counter-reset:st}
.step{background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:28px 22px; box-shadow:var(--shadow)}
.step .n{width:44px; height:44px; border-radius:50%; background:var(--navy); color:#fff;
  display:flex; align-items:center; justify-content:center; font-weight:800; font-size:19px; margin-bottom:14px}
.step h3{font-size:17px; margin-bottom:8px; color:var(--navy)}
.step p{font-size:14.5px; color:var(--mut)}
/* faq */
.faq{border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; background:#fff}
.faq details{border-bottom:1px solid var(--line)} .faq details:last-child{border:0}
.faq summary{padding:20px 22px; font-weight:700; cursor:pointer; color:var(--navy); font-size:16px; list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+"; float:right; color:var(--orange); font-size:22px; font-weight:800}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 22px 20px; color:var(--mut); font-size:15px}
/* contact */
.cta-band{background:linear-gradient(135deg,var(--navy),var(--navy2)); color:#fff; border-radius:20px;
  padding:52px 40px; display:flex; align-items:center; justify-content:space-between; gap:26px; flex-wrap:wrap; box-shadow:var(--shadow)}
.cta-band h2{color:#fff; margin-bottom:8px}
.cta-band p{opacity:.85; max-width:520px}
.form{background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:30px; box-shadow:var(--shadow)}
.frow{display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:16px}
.fld{display:flex; flex-direction:column; gap:6px; margin-bottom:16px}
.fld label{font-size:13.5px; font-weight:700; color:var(--navy)}
.fld input,.fld select,.fld textarea{border:1px solid var(--line); border-radius:10px; padding:13px 14px; font-size:15px; font-family:inherit}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:2px solid var(--orange); border-color:var(--orange)}
.cinfo{display:grid; gap:16px}
.citem{background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:22px; box-shadow:var(--shadow)}
.citem h3{font-size:16px; color:var(--navy); margin-bottom:6px}
.citem p{color:var(--mut); font-size:14.5px}
.citem a.big{font-weight:800; color:var(--orange); font-size:17px}
/* footer */
.ftr{background:var(--navy); color:#c7d3df; padding:56px 0 28px; font-size:14.5px}
.ftr-grid{display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:32px; margin-bottom:36px}
.ftr h4{color:#fff; font-size:15px; margin-bottom:14px}
.ftr a{display:block; padding:4px 0; opacity:.85} .ftr a:hover{color:var(--orange); opacity:1}
.ftr .brand{color:#fff; font-weight:800; font-size:20px; margin-bottom:10px}
.ftr-bot{border-top:1px solid rgba(255,255,255,.12); padding-top:22px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; font-size:13px; opacity:.7}
/* floating wa */
.wa-float{position:fixed; right:18px; bottom:18px; z-index:60; width:58px; height:58px; border-radius:50%;
  background:#25d366; display:flex; align-items:center; justify-content:center; box-shadow:0 8px 24px rgba(0,0,0,.25)}
.wa-float svg{width:30px; height:30px; fill:#fff}
/* page head */
.phead{background:var(--navy); color:#fff; padding:64px 0 54px}
.phead h1{font-size:clamp(30px,5vw,44px); font-weight:800}
.phead p{opacity:.8; margin-top:10px; font-size:16.5px; max-width:620px}
.crumb{font-size:13.5px; opacity:.65; margin-bottom:12px}
.crumb a:hover{color:var(--orange)}
@media(max-width:900px){
  .g4{grid-template-columns:repeat(2,1fr)} .g3{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr} .pd{grid-template-columns:1fr}
  .ftr-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .nav{display:none; position:absolute; top:64px; left:0; right:0; background:var(--navy);
    flex-direction:column; padding:18px 20px 24px; gap:16px}
  .nav.open{display:flex}
  .burger{display:block}
  .g4,.g3,.g2,.steps{grid-template-columns:1fr}
  .frow{grid-template-columns:1fr}
  .sec{padding:52px 0}
  .cta-band{padding:36px 26px}
  .ftr-grid{grid-template-columns:1fr}
}
/* blog */
.article{max-width:760px;margin:0 auto}
.article h1{font-size:clamp(28px,4.5vw,40px);line-height:1.2;margin:12px 0 8px}
.article .meta{color:#64748b;font-size:14px;margin-bottom:20px}
.article h2{font-size:24px;margin:34px 0 12px;color:var(--navy)}
.article h3{font-size:19px;margin:24px 0 10px;color:var(--navy2)}
.article p{margin:0 0 14px;line-height:1.75;color:#334155}
.article ul,.article ol{margin:0 0 16px 20px;line-height:1.75;color:#334155}
.article li{margin-bottom:6px}
.article table{width:100%;border-collapse:collapse;margin:16px 0 20px;font-size:15px}
.article th{background:var(--navy);color:#fff;text-align:left;padding:10px 12px}
.article td{border-bottom:1px solid #e2e8f0;padding:10px 12px;color:#334155}
.article .lede{font-size:18px;color:#475569;line-height:1.7}
.article .toc{background:#f1f5f9;border-radius:12px;padding:16px 20px;margin:20px 0}
.article .toc ul{margin:8px 0 0 18px}
.article .note{background:#fff7ed;border-left:4px solid var(--orange);padding:12px 16px;border-radius:0 10px 10px 0;margin:16px 0;font-size:15px}
.article .cta-box{background:var(--navy);color:#fff;border-radius:14px;padding:24px;margin:28px 0;text-align:center}
.article .cta-box a{color:#fff}
.article .cta-box .btn{margin-top:10px}
.crumbs{font-size:13px;color:#94a3b8;margin-bottom:6px}
.crumbs a{color:#94a3b8}
.post-card{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:22px;margin-bottom:16px}
.post-card h3{margin:0 0 8px;font-size:20px}
.post-card h3 a{color:var(--navy)}
.post-card p{color:#64748b;font-size:15px;margin:0 0 10px}
.post-card .meta{font-size:13px;color:#94a3b8}