:root{--bg:#f6f7f4;--surface:#fff;--ink:#182019;--muted:#69736c;--line:#dce2dd;--accent:#315f46;--accent-soft:#e7f0e9;--soft:#f0f3f0;--shadow:0 12px 35px rgba(25,40,30,.07)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
button,input,select{font:inherit}
a{color:inherit}
.container{width:min(1120px,calc(100% - 32px));margin:auto}
header{text-align:center;padding:52px 0 30px}
.badge{display:inline-block;background:var(--accent-soft);color:var(--accent);font-size:12px;font-weight:800;padding:7px 11px;border-radius:999px;margin-bottom:15px}
h1{font-size:clamp(38px,6vw,62px);line-height:1;letter-spacing:-2.5px;margin:0 0 15px}
.lead{max-width:720px;margin:auto;color:var(--muted);font-size:18px;line-height:1.55}
.calculator{display:grid;grid-template-columns:minmax(0,1fr) minmax(350px,.86fr);gap:20px;align-items:start}
.card{background:var(--surface);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:24px}
.card h2{font-size:17px;margin:0 0 15px}
.section-gap{margin-top:28px}
.shapes{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.shape{min-height:64px;border:1px solid var(--line);border-radius:13px;background:#fff;color:var(--ink);cursor:pointer;font-weight:750;font-size:13px}
.shape:hover{border-color:#aeb9b1}
.shape.active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{margin-top:14px}
label{display:block;font-size:13px;font-weight:750;color:var(--muted)}
input,select{width:100%;margin-top:6px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--ink);padding:12px;font-size:16px;outline:0}
input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px #dfece3}
.hidden{display:none!important}
.result{position:sticky;top:18px}
.kicker{text-transform:uppercase;letter-spacing:1.2px;font-size:11px;font-weight:850;color:var(--muted)}
.big{font-size:45px;font-weight:900;letter-spacing:-2px;line-height:1.02;margin:7px 0 4px}
.sub{font-size:15px;color:var(--muted)}
.panel{background:var(--soft);border:1px solid var(--line);border-radius:16px;padding:17px;margin-top:14px}
.bar{height:9px;background:#dce5df;border-radius:999px;overflow:hidden;margin:15px 0 7px}
.bar span{display:block;height:100%;width:30%;background:var(--accent);border-radius:999px;transition:width .25s}
.metrics{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:10px}
.metric{background:var(--surface);border:1px solid var(--line);border-radius:13px;padding:13px}
.metric small{color:var(--muted);font-size:11px}
.metric strong{display:block;font-size:18px;margin-top:4px}
.advice{line-height:1.55}
.cost-row{display:flex;justify-content:space-between;gap:15px;align-items:center}
.cost-row strong{font-size:22px}
.note{font-size:12px;line-height:1.5;color:var(--muted)}
.reset{border:0;background:none;color:var(--accent);font-weight:750;text-decoration:underline;cursor:pointer;padding:8px 0;margin-top:10px}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:30px 0}
.feature{background:var(--surface);border:1px solid var(--line);border-radius:17px;padding:19px}
.feature h3{font-size:15px;margin:0 0 7px}.feature p{font-size:13px;line-height:1.5;color:var(--muted);margin:0}
.content{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:28px;margin-top:20px}
.content h2{font-size:25px;letter-spacing:-.5px}.content h3{font-size:18px;margin-top:25px}.content p,.content li{color:#566159;line-height:1.7}.content ul{padding-left:20px}
footer{text-align:center;color:var(--muted);font-size:12px;padding:30px 0 55px}
@media(max-width:850px){.calculator{grid-template-columns:1fr}.result{position:static}.features{grid-template-columns:1fr}}
@media(max-width:520px){.container{width:min(100% - 20px,1120px)}header{padding-top:32px}.card{padding:17px;border-radius:17px}.shapes{grid-template-columns:1fr 1fr}.grid2{grid-template-columns:1fr}.big{font-size:37px}}

/* ---- site shell ---- */
.topbar{background:var(--surface);border-bottom:1px solid var(--line)}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0;flex-wrap:wrap}
.brand{font-weight:900;letter-spacing:-.5px;text-decoration:none;font-size:17px;color:var(--ink)}
.brand span{color:var(--accent)}
.nav{display:flex;gap:4px 16px;flex-wrap:wrap}
.nav a{font-size:14px;font-weight:650;color:var(--muted);text-decoration:none;padding:6px 2px}
.nav a:hover,.nav a[aria-current="page"]{color:var(--accent)}
.nav a[aria-current="page"]{text-decoration:underline;text-underline-offset:5px}
.crumbs{font-size:13px;color:var(--muted);padding:18px 0 0}
.crumbs a{color:var(--muted)}
header.page-head{padding-top:26px}
a:focus-visible,button:focus-visible{outline:3px solid #9cc3a9;outline-offset:2px;border-radius:6px}
.content a{color:var(--accent)}
.content table{width:100%;border-collapse:collapse;margin:14px 0 6px;font-size:15px}
.content th,.content td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
.content th{font-size:13px;color:var(--muted);font-weight:750;background:var(--soft)}
.content td.num,.content th.num{text-align:right;font-variant-numeric:tabular-nums}
.tablewrap{overflow-x:auto}
.example{background:var(--accent-soft);border:1px solid #cfe0d4;border-radius:14px;padding:16px 18px;margin:16px 0}
.example p{margin:4px 0;color:#2c4a39}
.faq details{border-top:1px solid var(--line);padding:12px 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:750;color:var(--ink)}
.faq details p{margin:8px 0 0}
.tools{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:14px}
.tool{display:block;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px;text-decoration:none}
.tool:hover{border-color:var(--accent)}
.tool strong{display:block;font-size:15px;color:var(--ink)}
.tool span{font-size:13px;color:var(--muted);line-height:1.45}
.foot-nav{display:flex;justify-content:center;gap:6px 18px;flex-wrap:wrap;margin-bottom:12px}
.foot-nav a{color:var(--muted)}
@media(max-width:850px){.tools{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.bar span{transition:none}}

/* ---- correções de layout ---- */
.card h2.section-gap{margin-top:28px}
select{-webkit-appearance:none;appearance:none;min-height:46px;padding-right:38px;cursor:pointer;
background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%2369736c' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
background-repeat:no-repeat;background-position:right 14px center}
input[type=number]{min-height:46px}