:root{--navy:#07111f;--navy2:#0d1b2d;--blue:#1478ff;--blue2:#61a8ff;--line:#dfe5ec;--muted:#627084;--bg:#f3f6f9;--white:#fff;--shadow:0 22px 60px rgba(7,17,31,.12)}
*{box-sizing:border-box}body{margin:0;font-family:Manrope,system-ui,sans-serif;color:var(--navy);background:var(--bg);font-size:16px}.topbar{height:82px;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1180px)/2));border-bottom:1px solid rgba(255,255,255,.12)}.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:10px;background:linear-gradient(145deg,var(--blue2),var(--blue));font-size:27px;font-weight:800}.brand b,.brand strong{display:block;line-height:1}.brand b{font-size:10px;letter-spacing:.26em;color:#a7cfff}.brand strong{font-size:21px;letter-spacing:.04em;margin-top:4px}.tagline{color:#aeb8c5;font-size:14px}.shell{max-width:1180px;margin:auto;padding:55px 24px 70px}.intro{display:flex;align-items:end;justify-content:space-between;margin-bottom:28px}.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--blue);font-weight:800}.intro h1{font-size:clamp(32px,5vw,52px);line-height:1.05;margin:8px 0 10px;letter-spacing:-.04em}.intro p{margin:0;color:var(--muted);max-width:620px}.ghost{border:1px solid var(--line);background:#fff;color:var(--navy);padding:11px 16px;border-radius:10px;font:600 14px inherit;cursor:pointer}.ghost:hover{border-color:var(--blue);color:var(--blue)}.calculator{display:grid;grid-template-columns:1.25fr .75fr;background:#fff;border-radius:22px;box-shadow:var(--shadow);overflow:hidden;border:1px solid #e8edf2}.form-panel{padding:36px}.result-panel{background:linear-gradient(160deg,var(--navy2),var(--navy));color:#fff;padding:32px;display:flex;flex-direction:column}.step{display:flex;gap:13px;align-items:start;margin-bottom:22px}.step>span{display:grid;place-items:center;background:#eaf3ff;color:var(--blue);width:34px;height:34px;border-radius:9px;font-weight:800;font-size:12px;flex:none}.step h2{font-size:18px;margin:0 0 3px}.step p{font-size:13px;color:var(--muted);margin:0}.measure-step{margin-top:34px}.grid{display:grid;gap:16px}.grid.two{grid-template-columns:1fr 1fr}.fields{grid-template-columns:repeat(2,1fr)}label{font-size:13px;font-weight:700;color:#344155;display:flex;flex-direction:column;gap:8px}select,input{appearance:none;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--navy);height:48px;padding:0 14px;font:600 15px Manrope,system-ui,sans-serif;outline:none;width:100%}select{background-image:linear-gradient(45deg,transparent 50%,#758296 50%),linear-gradient(135deg,#758296 50%,transparent 50%);background-position:calc(100% - 18px) 20px,calc(100% - 13px) 20px;background-size:5px 5px;background-repeat:no-repeat;padding-right:34px}input:focus,select:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(20,120,255,.12)}.input-wrap{position:relative}.input-wrap input{padding-right:48px}.unit{position:absolute;right:14px;bottom:14px;font-size:13px;color:#7b8797;font-weight:700}.converter{margin-top:30px;border-top:1px solid var(--line);padding-top:24px;display:grid;grid-template-columns:1.25fr 1fr .7fr;gap:14px;align-items:end}.converter>div b,.converter>div span{display:block}.converter>div b{font-size:14px}.converter>div span{color:var(--muted);font-size:12px;margin-top:4px}.converter output{height:48px;border-radius:10px;background:#eef5ff;color:var(--blue);display:flex;align-items:center;justify-content:center;font-weight:800}.drawing-wrap{min-height:268px}.drawing-label{font-size:10px;letter-spacing:.16em;color:#8192a8;font-weight:800}#drawing{width:100%;height:225px;overflow:visible}.shape{fill:none;stroke:#61a8ff;stroke-width:15;stroke-linecap:square;stroke-linejoin:miter}.shape-fill{fill:rgba(97,168,255,.15);stroke:#61a8ff;stroke-width:4}.dimension{stroke:#8598af;stroke-width:1.5}.dim-text{fill:#d8e6f5;font:700 12px Manrope}.result-card{background:#fff;color:var(--navy);border-radius:16px;padding:24px;margin-top:auto}.result-card>span{font-size:10px;color:#728094;letter-spacing:.13em;font-weight:800}.result-card>strong{display:block;font-size:38px;letter-spacing:-.04em;margin:8px 0 20px;color:var(--blue)}.result-card small{font-size:16px;letter-spacing:0}.result-row{display:flex;justify-content:space-between;gap:15px;border-top:1px solid #e7ebf0;padding:13px 0 0;margin-top:13px;font-size:13px}.result-row span{color:#687589}.notice{color:#8493a6;font-size:11px;line-height:1.55;margin:16px 5px 0}footer{text-align:center;color:#7a8797;font-size:12px;padding:0 20px 30px}
@media(max-width:850px){.calculator{grid-template-columns:1fr}.result-panel{min-height:570px}.shell{padding-top:38px}.intro{align-items:start}.ghost{margin-top:5px}}
@media(max-width:560px){.topbar{height:70px;padding:0 18px}.shell{padding:30px 14px 45px}.intro{display:block}.intro h1{font-size:36px}.intro p{font-size:14px}.ghost{margin-top:18px}.form-panel,.result-panel{padding:24px 20px}.grid.two,.fields{grid-template-columns:1fr}.converter{grid-template-columns:1fr 1fr}.converter>div{grid-column:1/-1}.calculator{border-radius:16px}.result-card{order:0;margin-top:0;margin-bottom:22px}.drawing-wrap{order:1;min-height:245px}.notice{order:2}.result-card>strong{font-size:34px}}
.topbar{height:114px;background:#fff;color:var(--navy);border-bottom:1px solid var(--line);box-shadow:0 5px 18px rgba(7,17,31,.05)}
.brand{gap:14px;color:var(--navy)}
.brand-logo{display:block;width:100px;height:100px;object-fit:contain}
.brand b{font-size:11px;letter-spacing:.24em;color:#276db5}
.brand strong{font-size:23px;letter-spacing:.04em;margin-top:5px;color:#073b73}
.header-contact{display:flex;flex-direction:column;align-items:flex-end;gap:5px;text-align:right;min-width:0}
.tagline{color:#073b73;font-size:16px;letter-spacing:.02em}
.contact-links{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:5px;color:#66768a;font-size:13px;font-weight:700}
.contact-links a,.address-link{color:#52647a;text-decoration:none;transition:color .18s ease}
.contact-links a:hover,.address-link:hover{color:var(--blue)}
.contact-links .whatsapp-link{color:#087d4b}
.contact-separator{color:#9aa8b7;margin:0 3px}
.address-link{font-size:12px;font-weight:600}
.metals-line{font-size:10px;letter-spacing:.18em;color:#1c66ae;font-weight:800}
.metals-line i{font-style:normal;color:var(--blue);padding:0 3px}
@media(max-width:850px){.topbar{height:auto;min-height:114px;padding-top:10px;padding-bottom:10px}.header-contact{gap:4px}.contact-links{max-width:510px}.address-link{max-width:540px}}
@media(max-width:650px){.topbar{flex-direction:column;height:auto;padding:10px 18px 14px;gap:4px}.brand-logo{width:76px;height:76px}.header-contact{align-items:center;text-align:center;gap:6px}.tagline{font-size:15px}.contact-links{justify-content:center;gap:4px;font-size:12px}.contact-separator{margin:0 2px}.address-link{font-size:11px;line-height:1.45}.metals-line{font-size:9px}}
.mobile-result-card{display:none}
@media(max-width:560px){.mobile-result-card{display:block;margin:26px 0 8px;border:1px solid #d7e7fb;box-shadow:0 12px 30px rgba(20,120,255,.09)}.result-panel>.result-card{display:none}}

/* Campos com contraste reforçado para facilitar o preenchimento. */
select,input{border:1.5px solid #939fad;background-color:#f8fbff;box-shadow:inset 0 1px 2px rgba(7,17,31,.03);transition:border-color .18s ease,background-color .18s ease,box-shadow .18s ease}
select{background-color:#f8fbff}
input:hover,select:hover{border-color:#7895b4;background-color:#fff}
input:focus,select:focus{border-color:var(--blue);background-color:#fff;box-shadow:0 0 0 3px rgba(20,120,255,.16)}
.unit{color:#65758a}

/* Conversor bidirecional exclusivo da Alure. */
.converter{grid-template-columns:1fr 46px 1fr;gap:12px 10px;align-items:end}
.converter-heading{grid-column:1/-1;margin-bottom:3px}
.converter-heading b{font-size:16px!important}
.converter-heading span{font-size:13px!important}
.converter-swap{display:grid;place-items:center;height:48px;color:var(--blue);font-size:22px;font-weight:800}
.converter output{grid-column:1/-1;height:56px;border:1px solid #cfe1f8;background:linear-gradient(135deg,#f2f7ff,#eaf3ff);gap:14px;font-size:16px}
.converter output b,.converter output strong{font-size:18px;color:var(--blue)}
.converter output span{color:#77879a;font-weight:700}
@media(max-width:560px){.converter{grid-template-columns:1fr 34px 1fr}.converter label{min-width:0}.converter select{padding-left:10px;padding-right:28px;font-size:14px}.converter-swap{font-size:19px}}