:root{--water:#00aeef;--ocean:#0066b3;--navy:#083a63;--crystal:#5ddcff;--ice:#f2fafd;--white:#fff;--charcoal:#17242c;--muted:#667884;--sun:#ffc94a;--line:#cfe5ee;--shadow:0 18px 50px rgba(8,58,99,.12);--radius:24px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--charcoal);font-family:Inter,Manrope,"Segoe UI",Arial,sans-serif;font-size:1.0625rem;line-height:1.65;background:#fff}img{max-width:100%;height:auto;display:block}a{color:var(--ocean);text-decoration-thickness:.08em;text-underline-offset:.18em}a:hover{color:var(--navy)}.wrap{width:min(1160px,calc(100% - 40px));margin-inline:auto}.narrow{max-width:840px}.skip{position:fixed;left:12px;top:-60px;z-index:999;background:#fff;padding:10px 16px}.skip:focus{top:12px}.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);border-bottom:1px solid rgba(8,58,99,.1);backdrop-filter:blur(12px)}.header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy);font-weight:800;line-height:1.05}.brand img{border-radius:50%;object-fit:cover}.brand span{display:flex;flex-direction:column}.brand small{font-size:.76rem;color:var(--ocean);letter-spacing:.08em;text-transform:uppercase;margin-top:5px}.site-header nav{display:flex;align-items:center;gap:22px}.site-header nav a:not(.button){text-decoration:none;color:var(--charcoal);font-size:.94rem;font-weight:650}.menu{display:none;border:1px solid var(--line);background:#fff;padding:10px 14px;border-radius:10px;font:inherit}.button{display:inline-flex;min-height:48px;align-items:center;justify-content:center;padding:12px 22px;border:0;border-radius:999px;background:var(--water);color:#052f4d;text-decoration:none;font-weight:800;box-shadow:0 8px 20px rgba(0,174,239,.2);cursor:pointer;font:inherit}.button:hover{background:#19baf4;color:#052f4d;transform:translateY(-1px)}.button-small{min-height:42px;padding:9px 17px}.button.secondary{background:#fff;color:var(--navy);box-shadow:none;border:2px solid rgba(8,58,99,.22)}.button.light{background:#fff;color:var(--navy)}.hero{position:relative;min-height:680px;display:grid;align-items:center;overflow:hidden;background:var(--navy)}.hero picture,.hero picture img,.hero-shade{position:absolute;inset:0;width:100%;height:100%}.hero picture img{object-fit:cover;object-position:center}.hero-shade{background:linear-gradient(90deg,rgba(3,32,56,.88) 0%,rgba(3,32,56,.66) 43%,rgba(3,32,56,.08) 76%)}.hero-copy{position:relative;color:#fff;padding-block:110px;z-index:1}.hero-copy h1{font-size:clamp(2.8rem,6vw,4.6rem);line-height:1.03;letter-spacing:-.045em;max-width:720px;margin:.25em 0}.hero-copy>p:not(.eyebrow){font-size:1.25rem;max-width:640px;color:#e7f8ff}.eyebrow{text-transform:uppercase;letter-spacing:.16em;font-size:.78rem;font-weight:850;color:var(--ocean);margin:0 0 12px}.hero .eyebrow,.cta-panel .eyebrow{color:var(--crystal)}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.stat-strip{background:#fff;border-bottom:1px solid var(--line)}.stats{display:grid;grid-template-columns:repeat(3,1fr);padding-block:24px}.stats div{padding:5px 30px;border-right:1px solid var(--line);display:flex;gap:6px;flex-direction:column}.stats div:last-child{border:0}.stats strong{font-size:1.55rem;color:var(--navy)}.stats span{color:var(--muted);font-size:.92rem}.section{padding:96px 0}.section.ice,.ice{background:var(--ice)}h1,h2,h3{color:var(--navy);line-height:1.12;letter-spacing:-.03em}h2{font-size:clamp(2rem,4vw,3rem);margin:.2em 0 .5em}h3{font-size:1.35rem}.intro-grid,.local{display:grid;grid-template-columns:1.2fr .8fr;gap:64px;align-items:center}.hardness-card{padding:34px;background:linear-gradient(145deg,var(--navy),var(--ocean));color:#fff;border-radius:var(--radius);box-shadow:var(--shadow)}.hardness-card span,.hardness-card b{display:block}.hardness-card strong{font-size:5rem;line-height:1}.hardness-card .meter{height:12px;background:rgba(255,255,255,.25);border-radius:20px;margin:24px 0;overflow:hidden}.hardness-card .meter i{display:block;width:55%;height:100%;background:var(--crystal)}.hardness-card a{color:#fff}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:36px}.card{display:block;padding:30px;background:#fff;border:1px solid var(--line);border-radius:20px;text-decoration:none;color:var(--charcoal);box-shadow:0 8px 30px rgba(8,58,99,.06)}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.card .icon{display:grid;place-items:center;width:48px;height:48px;border-radius:50%;background:var(--ice);color:var(--water);font-size:1.8rem}.card b{color:var(--ocean)}.split-head{display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:end}.before-after{display:grid;grid-template-columns:1fr 1fr;gap:18px}.before-after figure{margin:0;border-radius:20px;overflow:hidden;background:var(--ice)}.before-after img{aspect-ratio:3/2;object-fit:cover}.before-after figcaption{padding:16px 20px;font-weight:750;color:var(--navy)}.local img{border-radius:var(--radius);aspect-ratio:3/2;object-fit:cover}.cta-panel{padding:48px;background:linear-gradient(135deg,var(--navy),#07598f);border-radius:var(--radius);color:#e8f8ff;display:flex;gap:50px;align-items:center;justify-content:space-between}.cta-panel h2{color:#fff}.cta-panel>div{max-width:720px}.page-hero{padding:70px 0 76px;background:linear-gradient(180deg,var(--ice),#fff)}.page-hero h1{font-size:clamp(2.6rem,5vw,4.5rem);max-width:900px;margin:.25em 0}.direct-answer{font-size:1.22rem;max-width:850px;color:#314650}.breadcrumbs{font-size:.9rem;color:var(--muted);display:flex;gap:9px;margin-bottom:30px}.content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:42px}.content-grid article{border-top:3px solid var(--crystal);padding-top:22px}.content-grid h2{font-size:1.75rem}.number{font-size:.8rem;font-weight:900;color:var(--ocean);letter-spacing:.15em}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:#fff}table{width:100%;border-collapse:collapse;min-width:560px}th,td{text-align:left;padding:15px 18px;border-bottom:1px solid var(--line)}th{background:#e6f6fb;color:var(--navy)}tr:last-child td{border:0}.faq details{border-bottom:1px solid var(--line);padding:10px 0}.faq summary{cursor:pointer;font-size:1.1rem;font-weight:750;color:var(--navy);padding:12px 36px 12px 0}.faq p{margin:.2em 0 1.2em}.sources{width:min(840px,calc(100% - 40px));margin:0 auto;padding:32px;border:1px solid var(--line);border-radius:18px;background:#fbfdfe}.sources h2{font-size:1.35rem}.reviewed{color:var(--muted);font-size:.88rem}.hardness-summary{display:grid;grid-template-columns:1fr 1fr;gap:20px}.hardness-summary div{background:#fff;padding:34px;border-radius:18px;border:1px solid var(--line)}.hardness-summary strong,.hardness-summary span{display:block}.hardness-summary strong{font-size:3rem;color:var(--navy)}.tool{width:min(840px,calc(100% - 40px));margin:70px auto 0;padding:38px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.inline-form>div{display:flex;gap:10px}.inline-form input{flex:1}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.form-grid label,.inline-form label{display:flex;flex-direction:column;gap:7px;font-weight:700;color:var(--navy)}.full{grid-column:1/-1}input,select{width:100%;min-height:50px;padding:10px 13px;border:1px solid #9db9c6;border-radius:10px;background:#fff;color:var(--charcoal);font:inherit}input:focus,select:focus,button:focus,a:focus{outline:3px solid var(--sun);outline-offset:3px}.result{margin-top:22px;padding:22px;background:var(--ice);border-left:5px solid var(--water);border-radius:8px}.lead-form{padding:36px;background:var(--ice);border-radius:20px}.consent{display:grid;grid-template-columns:22px 1fr;gap:10px;margin:24px 0;font-weight:500}.consent input{width:20px;min-height:20px}.form-note{color:var(--muted);font-size:.88rem}.hp{position:absolute!important;left:-10000px!important}footer{background:#062e4e;color:#ddecf4;padding:70px 0 100px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:60px}.footer-grid h2{font-size:1rem;text-transform:uppercase;letter-spacing:.12em;color:#fff}.footer-grid a{display:block;color:#fff;margin:8px 0}.footer-grid .brand{display:flex}.footer-grid p{max-width:480px;color:#bcd2df}.legal{border-top:1px solid rgba(255,255,255,.15);margin-top:45px;padding-top:20px;font-size:.84rem;color:#9fbdcc}.mobile-cta{display:none}.text-link{font-weight:800}@media(max-width:900px){.menu{display:block}.site-header #primary-nav{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);padding:20px}.site-header #primary-nav.open{display:block}.site-header nav{align-items:stretch;flex-direction:column}.hero{min-height:640px}.hero-shade{background:linear-gradient(90deg,rgba(3,32,56,.9),rgba(3,32,56,.55))}.intro-grid,.local,.split-head{grid-template-columns:1fr}.content-grid{grid-template-columns:1fr 1fr}.cards{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}}@media(max-width:620px){body{font-size:1rem}.wrap{width:min(100% - 28px,1160px)}.section{padding:68px 0}.hero{min-height:620px}.hero-copy{padding-block:80px}.hero picture img{object-position:62% center}.stats{grid-template-columns:1fr}.stats div{border-right:0;border-bottom:1px solid var(--line);padding:16px 0}.before-after,.content-grid,.hardness-summary,.form-grid,.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.cta-panel{padding:30px;display:block}.cta-panel .button{margin-top:20px}.inline-form>div{display:block}.inline-form .button{width:100%;margin-top:10px}.tool{padding:25px}.mobile-cta{display:block;position:fixed;z-index:20;bottom:0;left:0;right:0;background:rgba(255,255,255,.96);padding:9px 14px;border-top:1px solid var(--line)}.mobile-cta .button{width:100%}footer{padding-bottom:130px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}