:root{
  --navy:#0A2A66;--blue:#1C5CE0;--blue-dark:#1449B8;--blue-pale:#E8F0FF;
  --mist:#F3F6FC;--text:#1A1A2E;--muted:#55627F;--border:#DCE4F5;--white:#fff;
  --green:#0F6E56;--radius:16px;--shadow:0 4px 24px rgba(10,42,102,.10);
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{font-family:'Poppins',system-ui,sans-serif;background:var(--white);color:var(--text);line-height:1.65;font-size:16px}
a{color:var(--blue)}a:hover{color:var(--navy)}
img{max-width:100%;display:block}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}

.topbar{background:var(--navy);color:#fff;text-align:center;font-size:13px;font-weight:500;padding:8px 16px}
header.site{background:#fff;border-bottom:1.5px solid var(--border);position:sticky;top:0;z-index:50;box-shadow:0 2px 12px rgba(10,42,102,.07)}
.header-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;min-height:64px;padding:8px 0}
.logo{font-size:20px;font-weight:800;color:var(--navy);text-decoration:none}
.logo span{color:var(--blue)}.logo small{font-size:13px;font-weight:500;color:var(--muted);margin-left:4px}
nav.main{display:flex;flex-wrap:wrap;align-items:center;gap:4px}
nav.main a{font-size:14px;font-weight:500;color:var(--muted);text-decoration:none;padding:10px 12px;border-radius:8px}
nav.main a:hover,nav.main a[aria-current=page]{color:var(--blue);background:var(--blue-pale)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 24px;border-radius:50px;font-weight:600;font-size:15px;text-decoration:none;border:2px solid transparent;cursor:pointer;font-family:inherit}
.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-dark);color:#fff}
.btn-wa{background:#1A8D4A;color:#fff}.btn-wa:hover{background:#147a3e;color:#fff}
.btn-ghost{background:#fff;color:var(--navy);border-color:var(--navy)}.btn-ghost:hover{background:var(--mist);color:var(--navy)}
nav.main .btn{min-height:44px;padding:0 18px;font-size:14px;color:#fff}

.crumbs{font-size:13px;color:var(--muted);padding:20px 0 0}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.crumbs li+li::before{content:"/";margin-right:6px;color:#9aa6bf}
.crumbs a{color:var(--muted)}

main.wrap{padding-bottom:72px}
.info .pill{align-self:flex-start}
h1{font-size:clamp(28px,4.5vw,42px);line-height:1.15;color:var(--navy);font-weight:700}
h2{font-size:clamp(22px,3vw,28px);color:var(--navy);font-weight:700;line-height:1.25;margin:48px 0 14px}
h3{font-size:17px;color:var(--navy);font-weight:600;margin-bottom:6px}
p{margin-bottom:14px}
.lead{font-size:17px;color:#34445e}
.pill{display:inline-block;background:var(--blue-pale);color:#1647a8;font-size:13px;font-weight:600;padding:4px 12px;border-radius:999px;text-decoration:none}

.page-head{padding:28px 0 8px}
.page-head .lead{max-width:760px;margin-top:12px}

.product{display:flex;flex-wrap:wrap;gap:40px;padding-top:28px;align-items:flex-start}
.product .visual{flex:1 1 360px;min-width:0;aspect-ratio:1/1;max-height:480px;border-radius:20px;background:linear-gradient(160deg,var(--mist),var(--blue-pale));display:flex;align-items:center;justify-content:center}
.product .visual .code{font-size:72px;font-weight:800;color:var(--navy);letter-spacing:.02em}
.product .info{flex:999 1 440px;min-width:0;display:flex;flex-direction:column;gap:16px}
.subtitle{font-weight:500;color:var(--muted)}
.doses{display:flex;flex-wrap:wrap;gap:10px;border:0}
.doses legend{font-size:14px;font-weight:600;margin-bottom:8px}
.doses label{position:relative}
.doses input{position:absolute;opacity:0;width:1px;height:1px}
.doses span{display:inline-flex;align-items:center;min-height:44px;padding:0 18px;border-radius:10px;border:2px solid var(--border);background:#fff;font-weight:500;cursor:pointer}
.doses input:checked+span{border-color:var(--navy);background:var(--navy);color:#fff}
.doses input:focus-visible+span{outline:3px solid var(--blue);outline-offset:2px}
.price{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.price strong{font-size:34px;color:var(--navy);font-weight:700}
.price small{color:var(--muted);font-size:14px}
.actions{display:flex;flex-wrap:wrap;gap:12px}.actions .btn{flex:1 1 220px}
.trust{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.trust div{background:var(--mist);border-radius:12px;padding:12px}
.trust b{display:block;font-size:15px;color:var(--navy)}
.trust span{font-size:12.5px;color:var(--muted)}
@media (max-width:520px){.trust{grid-template-columns:1fr}}

.cols{display:flex;flex-wrap:wrap;gap:40px}
.cols .main-col{flex:999 1 560px;min-width:0}
.cols aside{flex:1 1 280px;min-width:0;display:flex;flex-direction:column;gap:14px;padding-top:48px}
.card{border:1px solid var(--border);border-radius:16px;padding:20px}
.card.dark{background:var(--navy);color:#fff;border-color:var(--navy)}
.card.dark h3{color:#fff}.card.dark p{color:#d6e2f7;margin:0}
.card ul{list-style:none;display:flex;flex-direction:column;gap:6px;font-size:15px}

.table-box{border:1px solid var(--border);border-radius:12px;overflow-x:auto}
table.specs{width:100%;border-collapse:collapse;font-size:15px}
table.specs th,table.specs td{text-align:left;padding:12px 16px;vertical-align:top}
table.specs th{font-weight:600;width:38%}
table.specs tr:nth-child(odd){background:var(--mist)}

.faq{display:flex;flex-direction:column;gap:10px}
.faq details{border:1px solid var(--border);border-radius:12px;padding:0 18px}
.faq summary{cursor:pointer;font-weight:600;color:var(--navy);padding:16px 0;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;font-weight:700}
.faq details[open] summary::after{content:"–"}
.faq details p{color:#34445e}

.grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;margin-top:20px}
.pcard{border:1px solid var(--border);border-radius:16px;padding:20px;display:flex;flex-direction:column;gap:8px;text-decoration:none;color:var(--text);background:#fff}
.pcard:hover{box-shadow:var(--shadow);border-color:#b9c9ea;color:var(--text)}
.pcard h3{margin:4px 0 0;font-size:19px}
.pcard .sub{font-size:14px;color:var(--muted)}
.pcard .from{margin-top:auto;font-weight:700;color:var(--navy);font-size:18px}
.cat-title{margin-top:40px}

.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:8px}
.steps .card b{display:block;color:var(--navy);font-size:17px;margin-bottom:4px}

.calc{display:flex;flex-wrap:wrap;gap:24px;margin-top:24px}
.calc form{flex:1 1 340px;min-width:0;display:flex;flex-direction:column;gap:16px}
.calc .out{flex:1 1 320px;min-width:0}
.field label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
.field input,.field select{width:100%;min-height:48px;border:1.5px solid var(--border);border-radius:10px;padding:0 14px;font:inherit;background:#fff;color:var(--text)}
.field input:focus,.field select:focus{outline:3px solid var(--blue-pale);border-color:var(--blue)}
.field .hint{font-size:13px;color:var(--muted);margin-top:4px}
.result{background:var(--navy);color:#fff;border-radius:16px;padding:24px;display:flex;flex-direction:column;gap:14px}
.result div{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid rgba(255,255,255,.18);padding-bottom:10px}
.result div:last-child{border:0;padding:0}
.result span{color:#cfdcf5;font-size:14px}.result b{font-size:20px}
.result .big b{font-size:30px}

.prose{max-width:780px}
.prose ul{margin:0 0 14px 22px}.prose li{margin-bottom:6px}

footer.site{background:var(--mist);border-top:1px solid var(--border);padding:36px 0;font-size:14px;color:var(--muted)}
footer.site .links{display:flex;flex-wrap:wrap;gap:6px 18px;margin-bottom:16px}
footer.site .links a{color:var(--navy);text-decoration:none;padding:6px 0}
footer.site .legal{font-size:13px;line-height:1.6;max-width:900px}

/* Phase 2: product images, how-to steps, calculator CTA */
.product .visual.has-img{aspect-ratio:auto;max-height:none;background:#fff;border:1px solid var(--border);overflow:hidden}
.product .visual.has-img img{width:100%;height:auto}
ol.howto{margin:0 0 16px 22px;display:flex;flex-direction:column;gap:6px;color:#34445e}
.calc-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;background:var(--blue-pale);border-radius:14px;padding:18px 22px}
.calc-cta span{font-weight:500;color:var(--navy)}