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@media(max-width:900px){header{position:relative;flex-wrap:nowrap;min-height:90px}nav{top:100%;font-size:17px}nav a{padding:8px 0}.hero{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.hero h1{font-size:clamp(32px,4.5vw,42px)}.hero-copy{padding:35px 7%}.actions{gap:12px}.hero-caption{font-size:14px}.form-wrap{grid-template-columns:1fr}.consent-banner{display:block}.consent-banner .consent-actions{margin-top:16px}.care-chart .care-flow{grid-template-columns:1fr}.care-chart .flow-arrow{padding:0;transform:rotate(90deg)}.care-node p{max-width:500px;margin-inline:auto}.ribbon{gap:16px;flex-wrap:wrap}.split{gap:35px}.formula-role h4{font-size:18px}}
@media(max-width:650px){.hero{display:block}.hero-copy{padding:42px 6% 30px}.hero h1{font-size:38px}.hero-art{margin:0 6% 28px;aspect-ratio:492/582}.section{padding:45px 6%}.page-head{padding:45px 6% 25px}.partner-action{padding-top:0}.section-head{display:block}.split{grid-template-columns:1fr}.triptych{grid-template-columns:1fr}.formula-diagram .formula-roles{grid-template-columns:repeat(3,minmax(0,1fr))}.formula-diagram{padding:24px 8px}.formula-role{padding:8px 6px}.formula-role h4{font-size:16px;overflow-wrap:normal;hyphens:auto}.formula-role p,.formula-role .role-link{font-size:14px}.formula-role .role-link{border:0;padding:0}.formula-role svg{width:40px;height:40px}.formula-role+.formula-role:before{top:50px}.care-benefits{gap:20px;grid-template-columns:1fr}.section h2 br,.cta p br{display:none}.signature-photo{margin-top:25px}.steps{grid-template-columns:1fr}.care-chart{padding:24px 18px}.form-wrap{gap:20px}form{grid-template-columns:1fr;gap:18px}.full{grid-column:1/-1}.cookie-settings{grid-column:1/-1}footer{grid-template-columns:1fr;gap:25px}footer>div:first-child{grid-column:auto}.fine{grid-column:1/-1}.app-art{padding:25px}.consent-banner{bottom:8px;width:calc(100% - 16px);padding:16px}.consent-actions button{flex:1 1 145px}.page-head h1{font-size:36px}.cta{padding:45px 6%}.ribbon{padding-inline:6%;font-size:14px}.system-flow{font-size:26px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

/* Preserve intrinsic photo proportions when responsive width differs from HTML dimensions. */
img{height:auto}.system-preview img,.wideimage.productimage{display:block;width:100%;height:auto;aspect-ratio:auto;object-fit:contain}

.serum-introduction{max-width:900px!important}.serum-introduction>h3{font-size:clamp(21px,2vw,27px);line-height:1.4;margin:24px 0 18px}.signature-section .serum-principles{max-width:1040px;margin:38px auto 0}.serum-principle{display:grid;grid-template-columns:minmax(180px,.8fr) minmax(0,1.7fr);gap:40px;padding:30px 0;border-top:1px solid #cdbfb1}.serum-principle>.eyebrow{font-size:14px;line-height:1.65;padding-top:5px;letter-spacing:.06em}.serum-principle h3{font-size:clamp(21px,2vw,26px);margin:0 0 13px;line-height:1.35}.serum-principle p{margin:0;font-size:17px;line-height:1.65}.partner-stage-copy{display:grid;grid-template-columns:1fr 1fr;gap:40px;max-width:1100px}.partnership-stage h2{margin-bottom:25px}.partner-stage-copy p{margin-top:0}@media(max-width:650px){.serum-principle{grid-template-columns:1fr;gap:15px;padding:25px 0}.serum-principle p{font-size:16px}.partner-stage-copy{grid-template-columns:1fr;gap:16px}.signature-section .serum-principles{margin-top:28px}}

.serumjet-features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 45px;margin-top:45px}.serumjet-features article{border-top:1px solid var(--line);padding-top:23px}.serumjet-features h3{font-size:24px;line-height:1.35;margin:14px 0}.serumjet-features p{font-size:16px;line-height:1.65}.signature-section .signature-photo{max-width:540px;margin:28px auto}.signature-section .signature-photo img{aspect-ratio:2.2/1;object-fit:cover}.signature-section .serum-principles{max-width:1040px;margin-top:24px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 35px}.serum-principle{grid-template-columns:1fr;gap:12px;padding:22px 0}.serum-principle:last-child{grid-column:1/-1}.serum-principle h3{font-size:22px}.serum-principle p{font-size:16px}.formula-names{display:grid;grid-template-columns:1fr 1fr;gap:35px}.formula-names h2{font-size:clamp(25px,2.2vw,34px);padding-top:22px;border-top:1px solid var(--line);line-height:1.3}.formula-collection{padding-top:45px;padding-bottom:45px}@media(max-width:650px){.serumjet-features,.signature-section .serum-principles,.formula-names{grid-template-columns:1fr;gap:20px}.serum-principle:last-child{grid-column:auto}.serumjet-features h3{font-size:22px}.signature-section .signature-photo{max-width:100%;margin:24px auto}.formula-names{gap:0}.serum-principle{gap:12px}}

.skintrace-intro{max-width:850px}.skintrace-intro>p{font-size:18px}.skintrace-benefits{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin:32px 0 44px}.skintrace-benefits article{border-top:1px solid #cdbfb1;padding-top:22px}.skintrace-benefits h3{font-size:24px;margin:15px 0}.skintrace-benefits p{font-size:16px;line-height:1.65}.skintrace-screens{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:36px;max-width:830px;margin:0 auto;align-items:start}.skintrace-screen{margin:0;min-width:0}.skintrace-phone{background:#eef5f7;border:5px solid #655a50;border-radius:28px;padding:23px 8px 16px;max-width:198px;margin:auto;position:relative;box-shadow:10px 16px 32px #483a3112}.skintrace-phone:before{content:'';position:absolute;top:9px;left:calc(50% - 17px);width:34px;height:4px;border-radius:4px;background:#655a50}.screen-crops{display:flex;flex-direction:column;gap:8px;min-height:475px}.screen-crops img{display:block;width:100%;height:auto;max-width:100%;object-fit:contain;border-radius:6px}.screen-crops .skintrace-face{aspect-ratio:1.25/1;object-fit:cover;object-position:center 38%}.skintrace-screen figcaption{font-size:15px;line-height:1.5;text-align:center;margin:20px 0 0}.skintrace-screen figcaption span{color:#94785d;margin-right:6px}.skintrace-source-note{font-size:14px;line-height:1.6;text-align:center;margin:28px auto 0!important;max-width:790px!important}@media(max-width:900px){.skintrace-screens{gap:20px}.screen-crops{min-height:430px}}@media(max-width:650px){.skintrace-benefits{grid-template-columns:1fr;gap:24px}.skintrace-screens{grid-template-columns:1fr;gap:32px}.skintrace-phone{width:198px}.screen-crops{min-height:475px}.skintrace-screen figcaption{margin-top:15px}.skintrace-source-note{text-align:left}}

.screen-crops .skintrace-face{aspect-ratio:auto;object-fit:contain;max-height:190px;background:#f8f4ee}

.signature-lead{margin-bottom:28px;align-items:center;gap:6%;max-width:none!important}.signature-lead .signature-photo{width:100%;max-width:470px;margin:0;justify-self:center}.signature-lead .signature-photo img{aspect-ratio:1.35/1}.signature-lead .serum-introduction{max-width:none!important}.science-head{max-width:1150px}.science-skin{max-width:1200px;margin:0 auto 25px;padding-inline:5%;overflow:hidden}.science-skin img{display:block;width:100%;height:auto;max-height:400px;aspect-ratio:2.8/1;object-fit:cover;object-position:50% 45%}.science-barrier{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}.science-barrier svg{width:100%;height:auto}.science-links{display:flex;flex-direction:column;gap:12px;font-size:15px}.science-links a{text-decoration:underline}.science-approach{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:35px}.science-approach article{padding-top:23px;border-top:1px solid var(--line)}.science-references ol{padding-left:24px}.science-references li{padding:22px 0 22px 12px;border-top:1px solid #cbbba9}.science-references li>a{display:block;font-size:18px;margin-top:10px;text-decoration:underline}.science-references .note{font-size:14px}@media(max-width:650px){.signature-lead .signature-photo{max-width:100%;margin-top:10px}.signature-lead .signature-photo img{aspect-ratio:2/1}.science-barrier,.science-approach{grid-template-columns:1fr;gap:28px}.science-skin img{aspect-ratio:1.7/1}.science-head h1{font-size:36px}}

@media(min-width:1101px) and (max-width:1390px){header nav{gap:14px}.topcta{display:none}}

.hero .home-headline{font-family:Georgia,serif;font-weight:400;font-size:clamp(32px,3.35vw,52px);line-height:1.16;letter-spacing:-.025em;margin:24px 0 28px;text-transform:none}.home-headline>span{display:block}.home-headline>span+span{margin-top:.55em;font-size:.8em;line-height:1.24;letter-spacing:-.015em;color:#615147}@media(max-width:900px){.hero .home-headline{font-size:clamp(31px,4.1vw,40px)}}@media(max-width:650px){.hero .home-headline{font-size:36px;line-height:1.17}.home-headline>span+span{font-size:.81em;margin-top:.55em}}

.system-components .part{display:flex;flex-direction:column;align-items:center}.system-components .component-role{position:relative;border-top:1px solid #bba895;margin-top:auto;padding-top:17px;align-self:stretch;font-size:14px;line-height:1.6;color:var(--muted)}.system-components .part>p{margin-bottom:25px}.system-components .part+.part .component-role:before{content:'↔';position:absolute;left:-40px;top:13px;width:20px;background:var(--sand);color:#88705b;font-size:20px}.system-components .part:after{display:none}@media(max-width:650px){.system-components .component-role{margin-top:0}.system-components .part+.part .component-role:before{display:none}}

/* Reference-led SkinTrace screen set: original cover, warm report styling. */
.skintrace-screens{max-width:930px;gap:30px}.skintrace-phone.skintrace-phone-v2{padding:0;border:6px solid #655a50;border-radius:28px;max-width:260px;width:100%;background:#f6f0e8;box-shadow:10px 16px 32px #483a3115;overflow:hidden}.skintrace-phone-v2:before{display:none}.skintrace-display{aspect-ratio:325/705;overflow:hidden;position:relative;background:radial-gradient(ellipse at 12% 3%,#e1cbb7,transparent 48%),radial-gradient(ellipse at 95% 70%,#ddc1b6,transparent 65%),#fbf7ef}.skintrace-display .welcome-original{display:block;width:100%;height:100%;object-fit:contain;border-radius:0}.report-screen-header{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:17px 13px 12px;font-size:12px;color:#754e4d;line-height:1.2}.report-screen-header>span:first-child{font-size:25px}.report-brand{font-family:Georgia,serif;font-size:16px;color:#2c201c}.report-screen-body{padding:0 11px}.report-photo{background:#ece0d3;border-radius:12px;overflow:hidden}.report-photo .report-portrait{display:block;width:100%;height:auto;max-height:205px;aspect-ratio:1.13/1;object-fit:cover;object-position:center 35%}.report-observations{display:flex;flex-wrap:wrap;gap:5px;margin:8px 0 14px}.report-observations span{border:1px solid #dac7ba;border-radius:10px;padding:3px 6px;font-size:9px;background:#fffaf4;color:#67413f;line-height:1.35}.report-score-card{padding:14px 11px 16px;background:#fffdf9d9;border:1px solid #f2e5da;border-radius:15px}.report-kicker{font-size:11px;color:#6f5c53}.report-score-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:10px;align-items:center;margin-top:15px}.report-score-layout strong{display:block;font-size:33px;line-height:1.2;font-weight:500;letter-spacing:-.04em;color:#382a27}.report-score-status{font-size:8px;white-space:nowrap;display:inline-block;border-radius:7px;background:#eee4d8;padding:3px 5px;color:#715b4e;line-height:1.3}.report-metric{display:grid;grid-template-columns:1fr auto;gap:3px 4px;font-size:8px;line-height:1.4;margin-bottom:9px;color:#74534e}.report-metric b{font-weight:400}.report-metric i{grid-column:1/-1;height:3px;background:#e5d7ce;border-radius:4px;display:block;overflow:hidden}.report-metric em{display:block;height:100%;background:#855453;border-radius:4px}.report-bottom-brand{display:flex;justify-content:center;align-items:center;gap:8px;margin:22px 0 0;font:20px Georgia,serif;color:#674441}.report-bottom-brand>span{font:10px Arial,sans-serif;letter-spacing:.08em}.report-charts{display:flex;flex-direction:column;gap:12px}.report-chart-card{border-radius:14px;overflow:hidden;background:#fffaf4;border:1px solid #eee1d5}.report-chart-card .reference-chart{display:block;width:100%;height:auto;filter:grayscale(1) sepia(.5);mix-blend-mode:multiply}.skintrace-phone-v2 .report-screen-header,.skintrace-phone-v2 .report-screen-body{box-sizing:border-box}@media(max-width:900px) and (min-width:651px){.skintrace-screens{gap:18px}.report-screen-header{padding:13px 8px 9px;font-size:10px}.report-brand{font-size:13px}.report-screen-body{padding:0 7px}.report-score-card{padding:10px 7px}.report-observations{gap:3px;margin:6px 0 9px}.report-observations span{font-size:8px;padding:2px 4px}.report-score-layout{gap:6px;margin-top:10px}.report-score-layout strong{font-size:27px}.report-score-status{font-size:6px}.report-metric{font-size:7px;margin-bottom:6px}.report-bottom-brand{margin-top:12px;font-size:17px}.report-charts{gap:8px}}@media(max-width:650px){.skintrace-phone.skintrace-phone-v2{width:260px;max-width:100%}.skintrace-screens{gap:32px}}

.skintrace-phone-v2{align-self:start}.skintrace-phone-v2 .skintrace-display{aspect-ratio:325/705}

/* SkinTrace phone gallery reduced by 40%, preserving internal screen proportions. */
.skintrace-screens{max-width:504px;gap:18px}.skintrace-screen{min-width:0}.skintrace-phone.skintrace-phone-v2{width:260px;max-width:none;zoom:.6}.skintrace-screen figcaption{font-size:14px;margin-top:12px}.skintrace-source-note{max-width:650px!important}@media(max-width:900px) and (min-width:651px){.skintrace-screens{gap:18px}}@media(max-width:650px){.skintrace-screens{grid-template-columns:1fr;gap:22px;max-width:156px}.skintrace-phone.skintrace-phone-v2{width:260px;max-width:none;zoom:.6}}

/* Distinguish SkinTrace from the warm Signature Serums section. */
.section.sand.skintrace-section{background:#edf1f2}.skintrace-section .skintrace-benefits article{border-top-color:#cbd4d7}