:root{
  --navy:#0b2545;--navy2:#13315c;--ink:#1b2430;--muted:#5d6b7c;--bg:#ffffff;--soft:#f4f7fb;--line:#e3e9f1;
  --chem:#f26b1d;--it:#1479d1;--solar:#f5a800;--wa:#25d366;--call:#0b2545;
  --accent:var(--chem);--radius:14px;--shadow:0 10px 30px rgba(11,37,69,.10);
}
body.cat-it{--accent:var(--it)}
body.cat-solar{--accent:var(--solar)}
body.cat-chem{--accent:var(--chem)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{width:min(1180px,92%);margin:0 auto}
h1,h2,h3,h4{font-family:'Poppins','Inter',sans-serif;line-height:1.2;color:var(--navy)}
h1{font-size:clamp(2rem,4.6vw,3.3rem);font-weight:700}
h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:700}
h3{font-size:1.15rem;font-weight:600}
.eyebrow{display:inline-block;font-size:.75rem;letter-spacing:.14em;text-transform:uppercase;font-weight:700;color:var(--accent);margin-bottom:.8rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.4rem;border-radius:999px;font-weight:600;font-size:.95rem;border:2px solid transparent;cursor:pointer;transition:.2s;font-family:inherit}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{filter:brightness(.92);transform:translateY(-1px)}
.btn-ghost{border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost:hover{background:#fff;color:var(--navy)}
.btn-outline{border-color:var(--navy);color:var(--navy)}
.btn-outline:hover{background:var(--navy);color:#fff}
.btn-wa{background:var(--wa);color:#fff}
.btn-wa:hover{filter:brightness(.93)}
.btn-sm{padding:.5rem 1rem;font-size:.85rem}

/* top bar */
.topbar{background:var(--navy);color:#cfd9e8;font-size:.82rem}
.topbar .container{display:flex;justify-content:space-between;gap:1rem;padding:.5rem 0;flex-wrap:wrap}
.topbar a:hover{color:#fff}
.topbar .tb-right{display:flex;gap:1.2rem}

/* header */
.header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:.6rem;font-family:'Poppins',sans-serif;font-weight:700;font-size:1.25rem;color:var(--navy)}
.brand img{height:44px;width:auto}
.brand b{color:var(--chem)}
.nav{display:flex;align-items:center;gap:.2rem}
.nav>li{position:relative}
.nav>li>a{display:block;padding:.6rem .85rem;font-weight:500;font-size:.95rem;border-radius:8px}
.nav>li>a:hover,.nav>li>a.active{color:var(--chem)}
.nav .cta a{background:var(--chem);color:#fff;border-radius:999px;padding:.6rem 1.2rem;margin-left:.4rem}
.nav .cta a:hover{filter:brightness(.92);color:#fff}
.mega{position:absolute;left:50%;top:100%;transform:translateX(-50%) translateY(8px);width:min(980px,92vw);background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.6rem;display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem;opacity:0;visibility:hidden;transition:.18s}
.nav li.has-mega:hover .mega,.nav li.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.nav li.has-mega{position:static}
.header .container{position:relative}
.mega h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:.6rem;color:var(--chem)}
.mega .m-it h4{color:var(--it)}
.mega .m-solar h4{color:var(--solar)}
.mega a{display:block;padding:.28rem 0;font-size:.9rem;color:var(--ink)}
.mega a:hover{color:var(--chem);padding-left:4px}
.burger{display:none;background:none;border:0;font-size:1.7rem;cursor:pointer;color:var(--navy)}

/* hero */
.hero{background:linear-gradient(120deg,var(--navy) 0%,var(--navy2) 60%,#1d4a85 100%);color:#fff;position:relative;overflow:hidden;padding:5.5rem 0 5rem}
.hero:after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,var(--accent) 0%,transparent 68%);opacity:.35}
.hero h1{color:#fff;max-width:820px}
.hero p.lead{margin:1.2rem 0 2rem;max-width:660px;color:#d7e1ef;font-size:1.1rem}
.hero .actions{display:flex;gap:.8rem;flex-wrap:wrap}
.hero .eyebrow{color:#ffd1b3}
.crumbs{font-size:.85rem;color:#b9c8dd;margin-bottom:1rem}
.crumbs a:hover{color:#fff;text-decoration:underline}

/* sections */
section{padding:4.5rem 0}
.alt{background:var(--soft)}
.sec-head{max-width:720px;margin-bottom:2.4rem}
.sec-head p{color:var(--muted);margin-top:.7rem}
.center{text-align:center;margin-left:auto;margin-right:auto}
.grid{display:grid;gap:1.4rem}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;transition:.2s;display:flex;flex-direction:column;gap:.6rem}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:transparent}
.card .num{font-family:'Poppins';font-weight:700;color:var(--accent);font-size:.9rem;letter-spacing:.08em}
.card p{color:var(--muted);font-size:.95rem}
.card .more{margin-top:auto;font-weight:600;color:var(--accent);font-size:.9rem;padding-top:.4rem}
.card .more:after{content:" →"}
.icon{width:46px;height:46px;border-radius:12px;background:color-mix(in srgb,var(--accent) 14%,#fff);color:var(--accent);display:grid;place-items:center;font-size:1.4rem}
.tag{display:inline-block;font-size:.7rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.split{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:center}
.checks li{padding:.55rem 0 .55rem 2rem;position:relative;border-bottom:1px dashed var(--line)}
.checks li:before{content:"✓";position:absolute;left:0;top:.5rem;width:1.35rem;height:1.35rem;border-radius:50%;background:var(--accent);color:#fff;font-size:.8rem;display:grid;place-items:center}
.panel{background:var(--soft);border-radius:var(--radius);padding:1.8rem;border:1px solid var(--line)}
.alt .panel{background:#fff}
.chips{display:flex;flex-wrap:wrap;gap:.6rem}
.chip{padding:.5rem 1rem;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:.9rem;font-weight:500}
.alt .chip{background:#fff}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem 1.4rem 1.4rem 1.4rem;position:relative}
.step:before{counter-increment:s;content:"0" counter(s);font-family:'Poppins';font-weight:700;font-size:1.6rem;color:var(--accent);opacity:.9;display:block;margin-bottom:.3rem}
.step p{color:var(--muted);font-size:.93rem}
.brands{display:flex;flex-wrap:wrap;gap:.8rem}
.brand-pill{padding:.7rem 1.3rem;border:1px solid var(--line);border-radius:10px;font-family:'Poppins';font-weight:600;color:var(--navy);background:#fff;letter-spacing:.02em}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;text-align:center}
.stat{padding:1.4rem;border-radius:var(--radius);background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15)}
.stat b{display:block;font-family:'Poppins';font-size:2rem;color:#100f0f}
.stat span{color:#141414;font-size:.9rem}
.dark{background:var(--navy);color:#fff}
.dark h2{color:#fff}
.dark .sec-head p{color:#c3d0e3}

/* faq */
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:1rem 1.3rem;margin-bottom:.8rem}
.faq summary{cursor:pointer;font-weight:600;color:var(--navy);list-style:none;display:flex;justify-content:space-between;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font-size:1.3rem;color:var(--accent);line-height:1}
.faq details[open] summary:after{content:"–"}
.faq p{margin-top:.7rem;color:var(--muted)}

/* cta band */
.cta-band{background:linear-gradient(110deg,var(--accent),color-mix(in srgb,var(--accent) 60%,var(--navy)));color:#fff;padding:3.5rem 0}
.cta-band .container{display:flex;justify-content:space-between;align-items:center;gap:1.5rem;flex-wrap:wrap}
.cta-band h2{color:#fff}
.cta-band p{color:#fff;opacity:.92;margin-top:.4rem}
.cta-band .btn-primary{background:#fff;color:var(--navy)}
.cta-band .acts{display:flex;gap:.8rem;flex-wrap:wrap}

/* blog */
.post{max-width:800px;margin:0 auto}
.post p{margin:0 0 1.1rem;color:#2b3645;font-size:1.05rem}
.post h2{margin:2rem 0 .8rem;font-size:1.5rem}
.meta{color:var(--muted);font-size:.9rem}

/* forms */
form .row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
label{font-weight:600;font-size:.88rem;display:block;margin-bottom:.3rem}
input,select,textarea{width:100%;padding:.8rem 1rem;border:1px solid #cfd8e4;border-radius:10px;font:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);border-color:transparent}
.field{margin-bottom:1rem}
.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:-2.6rem;position:relative;z-index:2}
.contact-cards .card{align-items:flex-start}

/* footer */
.footer{background:#08182f;color:#b8c5da;padding:4rem 0 0}
.footer .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.3fr;gap:2rem}
.footer h4{color:#fff;font-size:.95rem;margin-bottom:1rem}
.footer a:hover{color:#fff}
.footer li{padding:.22rem 0;font-size:.9rem}
.footer .brand{color:#fff;margin-bottom:.8rem}
.footer p{font-size:.9rem}
.footer .bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:2.5rem;padding:1.2rem 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:.6rem;font-size:.85rem}

/* floating buttons */
.float{position:fixed;right:18px;bottom:22px;z-index:90;display:flex;flex-direction:column;gap:12px}
.fab{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;color:#fff;box-shadow:0 8px 22px rgba(0,0,0,.28);transition:.2s;position:relative}
.fab:hover{transform:scale(1.08)}
.fab svg{width:28px;height:28px;fill:#fff}
.fab.wa{background:var(--wa)}
.fab.call{background:var(--call)}
.fab.wa:before{content:"";position:absolute;inset:0;border-radius:50%;background:var(--wa);animation:pulse 2s infinite;z-index:-1}
@keyframes pulse{0%{transform:scale(1);opacity:.6}100%{transform:scale(1.7);opacity:0}}
.fab .lbl{position:absolute;right:68px;background:#111;color:#fff;font-size:.78rem;padding:.3rem .65rem;border-radius:6px;white-space:nowrap;opacity:0;pointer-events:none;transition:.2s}
.fab:hover .lbl{opacity:1}
.mbar{display:none}

@media(max-width:980px){
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr}
  .footer .cols{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .burger{display:block}
  .nav{position:absolute;left:0;right:0;top:74px;background:#fff;flex-direction:column;align-items:stretch;padding:1rem 4%;border-bottom:1px solid var(--line);display:none;max-height:calc(100vh - 74px);overflow:auto}
  .nav.open{display:flex}
  .mega{position:static;transform:none;opacity:1;visibility:visible;width:100%;box-shadow:none;border:0;padding:0 0 0 .6rem;grid-template-columns:1fr;display:none}
  .nav li.has-mega.open .mega{display:grid}
  .nav li.has-mega:hover .mega{transform:none}
  .contact-cards{grid-template-columns:1fr}
}
@media(max-width:640px){
  section{padding:3rem 0}
  .g2,.g3,.g4,.steps{grid-template-columns:1fr}
  form .row{grid-template-columns:1fr}
  .topbar .tb-left{display:none}
  .footer .cols{grid-template-columns:1fr}
  .float{display:none}
  .mbar{display:grid;grid-template-columns:1fr 1fr;position:fixed;left:0;right:0;bottom:0;z-index:90;box-shadow:0 -6px 20px rgba(0,0,0,.18)}
  .mbar a{display:flex;align-items:center;justify-content:center;gap:.5rem;padding:.9rem;color:#fff;font-weight:700}
  .mbar .c{background:var(--call)}
  .mbar .w{background:var(--wa)}
  .mbar svg{width:20px;height:20px;fill:#fff}
  body{padding-bottom:52px}
}

/* ===== v2 upgrade ===== */
:root{--navy:#0c1f3f;--navy2:#143061;--chem:#ee7b14;--it:#1462c9;--solar:#2f9e44;--soft:#eef2f8;--radius:6px;--shadow:0 18px 40px -18px rgba(12,31,63,.35)}
body{font-family:'Figtree',system-ui,sans-serif;font-size:17px}
h1,h2,h3,h4,.brand,.stat b{font-family:'Bricolage Grotesque','Figtree',sans-serif;letter-spacing:-.02em}
h1{font-weight:800}.brand b{color:var(--chem)}
.eyebrow,.tag{text-transform:none;letter-spacing:0;font-size:.9rem;font-weight:600;display:inline-flex;align-items:center;gap:.5rem}
.eyebrow:before{content:"";width:.6rem;height:.6rem;border-radius:50%;background:var(--accent)}
.hero .eyebrow{color:#fff}
#pbar{position:fixed;top:0;left:0;height:3px;width:0;z-index:99;background:linear-gradient(90deg,var(--it),var(--solar),var(--chem))}
.header{transition:box-shadow .3s}.header.sc{box-shadow:0 6px 24px rgba(12,31,63,.12)}
.card{border-radius:4px;border:1px solid var(--line);border-left:4px solid var(--accent);box-shadow:none}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.icon{border-radius:8px}.btn{border-radius:6px}.chip,.brand-pill{border-radius:6px}
.hero{background:radial-gradient(900px 500px at 85% 0,#1d4a85 0,transparent 60%),var(--navy)}
.hero:after{display:none}
.hero-wrap{display:grid;grid-template-columns:1.3fr .7fr;gap:3rem;align-items:center}
.hero-img img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:6px;border-bottom:6px solid var(--accent);box-shadow:var(--shadow);animation:rise .9s .2s both}
.hero.home{padding:5rem 0 4.5rem}
.hero.home h1{font-size:clamp(2.6rem,6.4vw,5rem);line-height:1.02;max-width:none}
.hero.home h1 span{display:block;animation:rise .8s both}
.hero.home h1 span:nth-child(2){animation-delay:.12s}.hero.home h1 span:nth-child(3){animation-delay:.24s}.hero.home h1 span:nth-child(4){animation-delay:.36s}
.hero.home .lead,.hero.home .actions{animation:rise .8s .5s both}
.ringbox{position:relative;width:min(420px,80vw);aspect-ratio:1;margin:auto}
.ring{position:absolute;inset:0;width:100%;height:100%}
.ring circle{stroke-dasharray:0 100;animation:draw 1.4s cubic-bezier(.3,.7,.2,1) forwards}
.ring .a1{stroke:var(--it)}.ring .a2{stroke:var(--solar);animation-delay:.25s;stroke-dashoffset:-33.4}.ring .a3{stroke:var(--chem);animation-delay:.5s;stroke-dashoffset:-66.8}
.ring-logo{position:absolute;inset:7%;width:86%;border-radius:50%;background:#fff;animation:rise 1s .3s both,float 7s 1.5s ease-in-out infinite}
@keyframes draw{to{stroke-dasharray:30 70}}
@keyframes rise{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
@keyframes float{50%{transform:translateY(-8px)}}
.vps{display:flex;gap:.8rem;height:480px}
.vp{position:relative;flex:1;overflow:hidden;border-radius:6px;color:#fff;transition:flex .6s cubic-bezier(.3,.7,.2,1);min-width:0}
.vp:hover,.vp:focus-within{flex:2.4}
.vp img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .8s}
.vp:hover img{transform:scale(1.06)}
.vp:before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(0deg,var(--c) 0,rgba(12,31,63,.78) 45%,rgba(12,31,63,.15))}
.vp div{position:absolute;z-index:2;left:1.6rem;right:1.6rem;bottom:1.5rem}
.vp h3{color:#fff;font-size:1.6rem;margin-bottom:.6rem}
.vp ul{display:flex;flex-wrap:wrap;gap:.3rem .9rem;max-height:0;overflow:hidden;opacity:0;transition:.5s}
.vp:hover ul,.vp:focus-within ul{max-height:140px;opacity:1}
.vp li a{font-size:.95rem;border-bottom:1px solid rgba(255,255,255,.5)}
.vp li a:hover{border-color:#fff}
.stats.light .stat{background:none;border:0;border-left:3px solid var(--accent);border-radius:0;text-align:left}
.stat b{font-size:2.8rem;line-height:1}
.clients{border-top:1px solid var(--line)}
.crow{display:grid;grid-template-columns:1.2fr 2fr;gap:1rem;padding:1rem .6rem;border-bottom:1px solid var(--line);transition:.25s;align-items:baseline}
.crow:hover{background:var(--soft);padding-left:1.2rem}
.crow b{font-family:'Bricolage Grotesque';font-size:1.1rem;color:var(--navy);display:flex;gap:.6rem;align-items:center}
.crow b:before{content:"";width:.6rem;height:.6rem;border-radius:50%;background:var(--c);flex:none}
.crow span{color:var(--muted)}
.mq{overflow:hidden;margin:.5rem 0;-webkit-mask:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.mq div{display:flex;gap:2.4rem;width:max-content;animation:mq 50s linear infinite}
.mq.r div{animation-direction:reverse;animation-duration:60s}.mq:hover div{animation-play-state:paused}
.mq span{font-family:'Bricolage Grotesque';font-weight:700;font-size:1.5rem;color:var(--navy);opacity:.75;white-space:nowrap}
.mq span:before{content:"";display:inline-block;width:.5rem;height:.5rem;border-radius:50%;background:var(--c);margin-right:.7rem}
@keyframes mq{to{transform:translateX(-50%)}}
.gal{display:grid;grid-template-columns:repeat(4,1fr);gap:.8rem}
.gal img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:6px;transition:transform .5s}
.gal a{overflow:hidden;border-radius:6px;display:block}.gal a:hover img{transform:scale(1.08)}
.gal .w{grid-column:span 2}.gal .w img{aspect-ratio:2/1}
.feat{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.steps.s4{grid-template-columns:repeat(4,1fr)}
.faq details{border-radius:6px}
.rv{opacity:0;transform:translateY(14px);transition:opacity .6s,transform .6s}.rv.in{opacity:1;transform:none}
:focus-visible{outline:3px solid var(--it);outline-offset:2px}
@media(max-width:900px){.hero-wrap,.feat{grid-template-columns:1fr}.hero-img{order:-1}.vps{flex-direction:column;height:auto}.vp{min-height:230px}.vp ul{max-height:140px;opacity:1}.gal,.steps.s4{grid-template-columns:1fr 1fr}.crow{grid-template-columns:1fr}.ringbox{width:260px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.rv{opacity:1;transform:none}.ring circle{stroke-dasharray:30 70}}
/* ===== v3 catalogue & topic pages ===== */
.ctl{display:flex;gap:.8rem;flex-wrap:wrap;align-items:center;margin-bottom:1.6rem;position:sticky;top:74px;z-index:20;background:#fff;padding:.8rem 0;border-bottom:1px solid var(--line)}
.ctl input{max-width:340px}.fb{padding:.55rem 1rem;border:1px solid var(--line);border-radius:6px;background:#fff;font:inherit;font-weight:600;cursor:pointer;transition:.2s}
.fb.on,.fb:hover{background:var(--navy);color:#fff;border-color:var(--navy)}
#cn{margin-left:auto;color:var(--muted);font-size:.9rem}
.pc{padding:0;overflow:hidden;gap:0}.pc img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .6s}.pc:hover img{transform:scale(1.06)}
.pc .ph{overflow:hidden}.pc .pb{padding:1.1rem 1.3rem 1.3rem;display:flex;flex-direction:column;gap:.35rem;flex:1}.pc h3{font-size:1.05rem}
.topic{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,.8fr);gap:3rem;align-items:start}
.topic article p{max-width:68ch;margin-bottom:1.1rem;color:#2b3645}.topic article p:first-child{font-size:1.2rem;color:var(--navy);font-weight:500}
.aside{position:sticky;top:100px;display:flex;flex-direction:column;gap:1rem}
.aside .panel a.l{display:block;padding:.45rem 0;border-bottom:1px solid var(--line);font-weight:500}.aside .panel a.l:hover{color:var(--accent);padding-left:6px}
.note{font-size:.88rem;color:var(--muted);border-left:3px solid var(--accent);padding-left:1rem;margin-top:1.5rem}
#top{position:fixed;right:1rem;bottom:8rem;width:42px;height:42px;border-radius:50%;border:0;background:var(--navy);color:#fff;cursor:pointer;opacity:0;pointer-events:none;transition:.3s;z-index:40}
#top.on{opacity:1;pointer-events:auto}
@media(max-width:900px){.topic{grid-template-columns:1fr}.aside{position:static}.ctl{top:0}}
/* ===== v5: patterns adapted from reference site ===== */
html{scroll-padding-top:90px}
.header .container{transition:height .3s}.header.sc .container{height:60px}
.theme{margin-left:.6rem;width:38px;height:38px;border-radius:50%;border:1px solid var(--line);background:none;color:inherit;cursor:pointer;font-size:1rem}
.trust{background:var(--navy);color:#cfd9e8;border-top:1px solid rgba(255,255,255,.12)}
.trust ul{display:flex;flex-wrap:wrap;gap:.5rem 2rem;padding:1rem 0;list-style:none}.trust li:before{content:"✓ ";color:var(--solar);font-weight:700}
.callout{background:var(--soft);border-left:4px solid var(--accent);padding:1.1rem 1.4rem;margin:1.4rem 0;border-radius:0 6px 6px 0}
.callout p{margin:.3rem 0 0!important}.topic h3{margin:1.6rem 0 .6rem}
.sq{position:fixed;top:60px;left:0;right:0;z-index:30;background:var(--navy);color:#fff;transform:translateY(-140%);transition:transform .35s}
.sq.on{transform:none}.sq .container{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.6rem 0}.sq b{font-family:'Bricolage Grotesque';font-size:1.05rem}.sq span{display:flex;gap:.5rem}
dialog.lb{border:0;background:none;padding:0;max-width:92vw;max-height:92vh}dialog.lb::backdrop{background:rgba(6,12,24,.88)}dialog.lb img{max-width:92vw;max-height:88vh;border-radius:6px;display:block}
.err{color:#c62828;font-weight:600;margin-top:.6rem}
[data-theme=dark]{color-scheme:dark;--bg:#0e1624;--ink:#e6ecf5;--muted:#9fb0c6;--line:#243350;--soft:#101c30}
[data-theme=dark] .header,[data-theme=dark] .ctl{background:#0c1424}
[data-theme=dark] .card,[data-theme=dark] .step,[data-theme=dark] .panel,[data-theme=dark] .chip,[data-theme=dark] .brand-pill,[data-theme=dark] .faq details,[data-theme=dark] .mega,[data-theme=dark] .fb,[data-theme=dark] input,[data-theme=dark] select,[data-theme=dark] textarea{background:#14213a;color:var(--ink);border-color:var(--line)}
[data-theme=dark] .alt{background:#0b1322}[data-theme=dark] .alt .panel,[data-theme=dark] .alt .chip{background:#14213a}
[data-theme=dark] .sec-head h2,[data-theme=dark] .card h3,[data-theme=dark] .panel h3,[data-theme=dark] .step h3,[data-theme=dark] .split h2,[data-theme=dark] .feat h2,[data-theme=dark] .crow b,[data-theme=dark] .mq span,[data-theme=dark] .brand-pill,[data-theme=dark] .faq summary,[data-theme=dark] .topic h3,[data-theme=dark] .brand,[data-theme=dark] .burger,[data-theme=dark] .topic article p:first-child{color:#e6ecf5}
[data-theme=dark] .post p,[data-theme=dark] .topic article p,[data-theme=dark] [style*="#44515f"]{color:#b9c6d8!important}
[data-theme=dark] .btn-outline{color:#e6ecf5;border-color:#e6ecf5}[data-theme=dark] .fb.on{background:#e6ecf5;color:#0c1f3f}
@media(max-width:980px){[data-theme=dark] .nav{background:#0c1424}.sq b{font-size:.9rem}}
/* ===== v6 fixes & polish ===== */
::selection{background:var(--chem);color:#fff}
img{background:var(--soft)}
.sq{top:60px;transform:translateY(-30px);opacity:0;visibility:hidden;transition:transform .35s,opacity .35s,visibility .35s;box-shadow:0 8px 24px rgba(0,0,0,.25)}
.sq.on{transform:none;opacity:1;visibility:visible}.sq b{font-family:'Bricolage Grotesque',Georgia,serif;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.toc a{display:block;padding:.4rem 0 .4rem .8rem;border-left:2px solid var(--line);font-size:.95rem;color:var(--muted)}.toc a:hover{color:var(--accent);border-color:var(--accent)}
.topic h3{font-size:1.35rem}.topic article h3{scroll-margin-top:110px}
section{padding:5rem 0}.sec-head h2{letter-spacing:-.025em}
.btn:active{transform:scale(.97)}.card,.btn,.vp{will-change:auto}
.nf{text-align:center;padding:6rem 0}.nf h1{font-size:6rem;color:var(--chem)}
@media(max-width:700px){.topbar{display:none}section{padding:3.4rem 0}.hero.home{padding:2.6rem 0 3rem}.hero.home h1{font-size:clamp(2.4rem,13vw,3.4rem)}.ringbox{order:-1;width:200px;margin:0 auto 1rem}.hero-wrap{gap:1.5rem}.sq .container span .btn-wa{display:none}.header .container{height:64px}}
@media(max-width:980px){.nav{max-height:calc(100vh - 70px);overflow:auto}}
.brand img{background:none}
img{height:auto}.vp img{height:100%}.ring-logo{height:auto}

/* local seo */
a.chip{text-decoration:none;color:inherit;transition:background .15s,border-color .15s}a.chip:hover{border-color:currentColor;text-decoration:underline}.areas-strip{border-top:1px solid rgba(255,255,255,.18);padding:1rem 0;font-size:.85rem;line-height:2}.areas-strip a{color:inherit;opacity:.85;margin-left:.8rem;white-space:nowrap}.areas-strip a:hover{opacity:1;text-decoration:underline}

/* guides */
.post h3{margin:1.6rem 0 .5rem;font-size:1.25rem}.post p{margin:.6rem 0;line-height:1.7}.post ul{list-style:disc;margin:.6rem 0 1rem 1.3rem}.post li{margin:.3rem 0;line-height:1.6}.post table.gt{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.95rem}.post .gt th,.post .gt td{border:1px solid var(--line);padding:.6rem .8rem;text-align:left;vertical-align:top}.post .gt th{background:rgba(127,127,127,.14);font-weight:600}

/* guides dark */
[data-theme=dark] .post h3,[data-theme=dark] .post h2,[data-theme=dark] .post li,[data-theme=dark] .post td,[data-theme=dark] .post th{color:#e6edf7}[data-theme=dark] .post .gt th{background:rgba(255,255,255,.08)}[data-theme=dark] .post .gt th,[data-theme=dark] .post .gt td{border-color:rgba(255,255,255,.18)}