/* Stronger navigation and authentic, uncropped clinical-room photography. */
header{display:grid;grid-template-columns:minmax(180px,1fr) auto minmax(0,1fr);align-items:center;gap:20px;min-height:112px}header .brand{justify-self:start}header nav{justify-self:center;gap:44px;font-size:18px;font-weight:500;letter-spacing:-.5px}.menu-button{grid-column:3}.intro-layout{grid-template-columns:.92fr 1.08fr;gap:6%}.chapter-picture{aspect-ratio:3/2;object-fit:contain;border-radius:20px;filter:none;opacity:1;image-rendering:auto}.hygiene-stage{position:relative;min-height:690px;border-radius:28px;overflow:hidden;margin-top:40px;background:#4d4b45;color:white}.hygiene-backgrounds,.hygiene-shade{position:absolute;inset:0}.hygiene-backgrounds img{position:absolute;width:100%;height:100%;object-fit:cover;object-position:center}.hygiene-shade{background:linear-gradient(90deg,rgba(25,32,30,.88),rgba(25,32,30,.68) 40%,rgba(25,32,30,.1) 78%),linear-gradient(0deg,rgba(25,32,30,.65),transparent 38%)}.hygiene-content{position:relative;padding:48px 46px 110px;max-width:590px}.hygiene-kicker{font:10px Arial;letter-spacing:3px;color:#d4c3a7}.hygiene-content h3{font:400 32px/1.6 Batang,serif;letter-spacing:-1px;margin:20px 0 30px}.hygiene-tabs{display:grid;gap:10px}.hygiene-tabs button{display:flex;align-items:center;gap:15px;text-align:left;border:1px solid #ffffff40;border-radius:16px;min-height:54px;padding:12px 16px;background:#ffffff08;color:#e5e5de;font-size:13px;cursor:pointer;transition:background .2s,border-color .2s}.hygiene-tabs button>span{font:11px Arial;letter-spacing:1px;color:#bdad92}.hygiene-tabs button>b{margin-left:auto;font-size:21px;font-weight:300}.hygiene-tabs button:hover,.hygiene-tabs button[aria-selected=true]{background:#f6eee2;color:#3b453f;border-color:#f6eee2}.hygiene-tabs button[aria-selected=true]>span{color:#8b7151}.hygiene-description{min-height:78px;padding:17px 2px 0;color:#e2ded4;font-size:12px;line-height:1.9}.hygiene-content #hygiene-play{border:1px solid #ffffff50;background:#17221e55;color:#fff7e9;border-radius:16px;padding:7px 12px;font-size:10px;cursor:pointer}.hygiene-content #hygiene-image-credit{display:block;margin-top:14px;color:#d2cec4;font-size:10px}.hygiene-signature{position:absolute;right:30px;bottom:28px;display:flex;align-items:center;gap:12px;max-width:370px;padding:13px 17px;border:1px solid #ffffff30;border-radius:18px;background:#17221ebf}.hygiene-signature img{object-fit:contain;background:#fff;border-radius:9px;padding:5px;flex-shrink:0}.hygiene-signature p{font-size:11px;line-height:1.8;margin:0;color:#f1eade}.hygiene-signature strong{font-size:13px;font-weight:500}.implant-brand p{line-height:2}.infection-chapter>.chapter-lead{max-width:700px}
@media(max-width:1450px){header nav{gap:30px;font-size:17px}header{padding-left:4%;padding-right:4%;grid-template-columns:minmax(160px,1fr) auto minmax(0,1fr);gap:10px}.hygiene-content{padding-left:30px;padding-right:30px;max-width:530px}.hygiene-content h3{font-size:29px}}
@media(max-width:1150px) and (min-width:851px){header nav{gap:23px;font-size:16px}.brand{font-size:21px}.brand img{width:34px;height:34px}.brand small{font-size:6px}header{grid-template-columns:minmax(150px,1fr) auto minmax(0,1fr)}.hygiene-signature{right:20px;bottom:20px;max-width:310px}.hygiene-stage{min-height:710px}}
@media(max-width:850px){header{display:flex;min-height:90px;justify-content:space-between}.menu-button{display:block;background:none;border:0;font-size:12px;color:#514437;padding:12px}.menu-button span{font-size:18px;margin-left:8px}header nav{display:none;position:absolute;top:100%;left:0;right:0;background:#f8f5ef;padding:20px 6%;border-bottom:1px solid #ded7cc;z-index:20;justify-self:stretch;font-size:16px}header nav.open{display:grid;gap:0}header nav a{padding:14px 10px}.intro-layout{grid-template-columns:1fr;gap:28px}.hygiene-stage{min-height:740px}.hygiene-shade{background:linear-gradient(90deg,#19201edb,#19201e88),linear-gradient(0deg,#19201e99,transparent)}.hygiene-content{max-width:100%;padding:32px 24px 150px}.hygiene-content h3{font-size:29px}.hygiene-signature{left:24px;right:24px;bottom:24px;max-width:none}.hygiene-tabs button{min-height:55px}.hygiene-description{min-height:76px}.chapter-picture{aspect-ratio:3/2}}
@media(prefers-reduced-motion:reduce){.hygiene-tabs button{transition:none}}
/* Larger, stronger top-level menu labels. */
header nav{font-size:21px;font-weight:700;color:#3d3329;letter-spacing:-.5px;gap:46px}header nav a{padding-top:8px;padding-bottom:8px}header nav a[aria-current=page]{color:#514030;box-shadow:0 3px 0 #a38b6c}
@media(max-width:1450px){header nav{font-size:20px;gap:31px}}
@media(max-width:1150px) and (min-width:851px){header nav{font-size:18px;gap:23px}}
@media(max-width:850px){header nav{font-size:19px;font-weight:700;gap:0}header nav a{padding:15px 10px}}