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--tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(/fonts/inter-latin.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Manrope;font-style:normal;font-weight:200 800;font-display:swap;src:url(/fonts/manrope-latin.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--font-body:"Inter", Arial, sans-serif;--font-heading:"Manrope", "Inter", Arial, sans-serif}body,input,select,textarea,button,nav,table{font-family:var(--font-body)}h1,h2,h3,h4,h5,h6,.brand{font-family:var(--font-heading)}.brand .brand-mark{background:0 0;border-radius:0;width:44px;height:44px}.brand-mark img{object-fit:contain;width:44px;height:40px;display:block}.brand-wordmark{font-family:var(--font-heading);font-weight:700}:root{--pv-petroleum:#0e3d36;--pv-blue-gray:#4e6b72;--pv-sage:#9bb7a7;--pv-aqua:#c7e0d9;--pv-ivory:#f8f7f2;--pv-bg:#f8f7f2;--pv-surface:#fff;--pv-surface-secondary:#eff4f0;--pv-text:#13332f;--pv-text-secondary:#4e6b72;--pv-border:#d9e4dd;--pv-primary:#0e3d36;--pv-primary-text:#fff;--pv-primary-hover:#15554b;--pv-accent:#c7e0d9;--pv-accent-text:#0e3d36;--pv-focus:#276d63;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--pv-radius-control:12px;--pv-radius-card:18px;--pv-radius-block:24px;--pv-photo-surface:#fff;--pv-backdrop:color-mix(in srgb, var(--pv-petroleum) 68%, transparent);--pv-shadow:color-mix(in srgb, var(--pv-petroleum) 12%, transparent);--pv-hero-halo:color-mix(in srgb, var(--pv-aqua) 26%, transparent);--pv-search-shadow:color-mix(in srgb, var(--pv-petroleum) 7%, transparent);--ink:var(--pv-text);--secondary:var(--pv-text-secondary);--muted:var(--pv-text-secondary);--paper:var(--pv-surface);--canvas:var(--pv-bg);--mineral:var(--pv-surface-secondary);--line:var(--pv-border);--copper:var(--pv-text-secondary);--verified:var(--pv-text);--control:var(--pv-surface-secondary);--focus:var(--pv-focus);--radius:var(--pv-radius-control)}:root[data-theme=dark]{--pv-bg:#0a2925;--pv-surface:#0e3d36;--pv-surface-secondary:#164b43;--pv-text:#f8f7f2;--pv-text-secondary:#c7e0d9;--pv-border:#35655b;--pv-primary:#c7e0d9;--pv-primary-text:#0e3d36;--pv-primary-hover:#f8f7f2;--pv-accent:#1d5149;--pv-accent-text:#f8f7f2;--pv-focus:#b7e1d6;--pv-hero-halo:color-mix(in srgb, var(--pv-sage) 7%, transparent);--pv-search-shadow:color-mix(in srgb, var(--pv-bg) 45%, transparent);--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}:is(body,body:has(.editorial-pilot)){background:var(--pv-bg);color:var(--pv-text);font-family:var(--font-body);font-size:16px;line-height:1.6}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);color:var(--pv-text);letter-spacing:-.035em;font-weight:700}h1{font-size:clamp(2.15rem,4.5vw,3.5rem);line-height:1.15}h2{font-size:clamp(1.65rem,2.8vw,2.3rem);line-height:1.2}h3{font-size:clamp(1.2rem,1.8vw,1.5rem);line-height:1.3}.hero h1{font-family:var(--font-heading);font-size:clamp(2.15rem,4.5vw,3.5rem)}.hero h1 em{color:var(--pv-text-secondary);font-family:inherit}p,small{color:var(--pv-text-secondary)}.utility{background:var(--pv-petroleum);color:var(--pv-ivory);letter-spacing:.015em;min-height:30px;padding-block:4px;font-size:11px}.utility a:hover{color:var(--pv-aqua)}.header{background:var(--pv-surface);flex-wrap:wrap;gap:16px;min-height:80px;padding-block:12px}.header .brand{gap:10px}.header .beta{border:1px solid var(--pv-border);letter-spacing:.1em;color:var(--pv-text-secondary);background:var(--pv-surface-secondary);border-radius:5px;align-self:center;margin-top:0;padding:4px 7px;font-size:9px;line-height:1}.header .theme-toggle{border-color:var(--pv-border);border-radius:50%;width:44px;height:44px;padding:0}.header .theme-toggle span{display:none}.header .brand{order:1}.header nav{order:2;margin-left:auto}.theme-toggle{border:1px solid var(--pv-text-secondary);border-radius:var(--pv-radius-control);background:var(--pv-surface);min-width:44px;min-height:44px;color:var(--pv-text);font:inherit;flex-shrink:0;order:3;justify-content:center;align-items:center;gap:8px;padding:8px 12px;font-size:14px;display:inline-flex}.theme-toggle:hover{background:var(--pv-surface-secondary)}.header .nav-more{display:block}.nav-menu{z-index:100;background:var(--pv-surface);border-color:var(--pv-border);box-shadow:0 8px 24px var(--pv-shadow);max-height:min(70vh,640px);overflow-y:auto}.brand .brand-mark{background:var(--pv-ivory);border-radius:var(--pv-radius-control);justify-content:center;align-items:center;width:44px;height:44px;display:inline-flex}.brand-wordmark{color:var(--pv-text)}.button,.editorial-reader .button{background:var(--pv-primary);color:var(--pv-primary-text);border-radius:var(--pv-radius-control);min-height:44px}.button:hover{background:var(--pv-primary-hover);color:var(--pv-primary-text)}.button.secondary{background:var(--pv-surface);color:var(--pv-text);border:1px solid var(--pv-text-secondary)}.button.secondary:hover{background:var(--pv-surface-secondary);color:var(--pv-text)}.reader-buy-options .retailer-product-link span{color:inherit}.reader-segments button[aria-selected=true],.reader-segments a:first-child{background:var(--pv-primary);color:var(--pv-primary-text)}input:not([type=checkbox]):not([type=radio]):not([type=range]),select,textarea{background:var(--pv-surface);color:var(--pv-text);border-color:var(--pv-text-secondary);border-radius:var(--pv-radius-control);font-family:var(--font-body);min-height:44px}input::placeholder,textarea::placeholder{color:var(--pv-text-secondary);opacity:1}input[type=checkbox],input[type=radio]{accent-color:var(--pv-primary)}.search-bar,.picker-search,.identify-input{border-color:var(--pv-text-secondary);background:var(--pv-surface);border-radius:var(--pv-radius-control)}.panel,.product-card,.question-card,.ingredient-tile,.compare-slot,.insight-card,.reader-product,.identify-result{border-radius:var(--pv-radius-card);border-color:var(--pv-border);background:var(--pv-surface)}.reader-overview,.reader-buy,.choose-limit,.library-answer,.hair-start{border-radius:var(--pv-radius-block)}.badge{background:var(--pv-surface-secondary);border-color:var(--pv-border);color:var(--pv-text-secondary);border-radius:999px}dialog{color:var(--pv-text);background:var(--pv-surface);border-color:var(--pv-border);border-radius:var(--pv-radius-block)}dialog::backdrop{background:var(--pv-backdrop)}dialog h2,dialog h3{color:var(--pv-text)}.product-photo,.hair-photo{background:var(--pv-photo-surface)}.evidence-support,.reference-kind,.education-kind{color:var(--pv-text-secondary)}.error-text{color:var(--pv-text);font-weight:600}.visual-comparison,.study-table{font-variant-numeric:tabular-nums}button:disabled{opacity:.65}button[aria-busy=true]{cursor:progress}button,a,input,select,textarea,summary{scroll-margin:96px 16px}:focus-visible{outline:3px solid var(--pv-focus);outline-offset:4px}@media (max-width:1023px){.header .nav-secondary{display:none}.header nav{gap:20px}}@media (max-width:639px){.header{gap:6px;padding-top:10px;padding-bottom:0}.utility{justify-content:center}.utility>span{display:none}.header .theme-toggle{order:2;margin-left:auto}.header nav{order:3;width:100%;margin-left:0}.theme-toggle span{display:none}.brand{min-width:0}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.bottle-scene.product-photo,.reader-photo .product-photo{background:var(--pv-photo-surface)}.home-hero.wrap{text-align:center;isolation:isolate;background:radial-gradient(ellipse at 50% 34%, var(--pv-hero-halo), transparent 66%);flex-direction:column;align-items:center;max-width:1280px;padding-block:56px 48px;display:flex;position:relative}.home-hero>*{min-width:0}.home-hero-eyebrow{letter-spacing:.12em;color:var(--pv-text-secondary);background:var(--pv-surface-secondary);border:1px solid var(--pv-border);border-radius:99px;align-items:center;gap:10px;margin:0 0 24px;padding:9px 16px;font-size:10px;font-weight:600;display:flex}.home-hero-eyebrow>span{background:var(--pv-primary);border-radius:50%;width:5px;height:5px}.home-hero h1{color:var(--pv-primary);letter-spacing:-.045em;text-wrap:balance;max-width:1040px;margin:0 0 20px;font-size:clamp(40px,5vw,72px);font-weight:700;line-height:1.08}.home-hero h1 span{color:var(--pv-text-secondary);margin-top:6px;font-weight:500;display:block}:root[data-theme=dark] .home-hero h1{color:var(--pv-text)}.home-hero-description{max-width:660px;color:var(--pv-text-secondary);margin:0 0 28px;font-size:18px;line-height:1.55}.hero-search{text-align:left;z-index:5;width:100%;max-width:820px;position:relative}.hero-search .sr-only{clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.hero-search form{border:1px solid var(--pv-border);background:var(--pv-surface);min-height:72px;box-shadow:0 12px 40px var(--pv-search-shadow);border-radius:24px;align-items:center;gap:12px;padding:9px 10px 9px 24px;transition:border-color .18s,box-shadow .18s;display:flex}.hero-search form:focus-within{outline:2px solid var(--pv-focus);outline-offset:3px;border-color:var(--pv-focus);box-shadow:0 16px 44px var(--pv-shadow)}.hero-search form input{width:100%;min-width:0;box-shadow:none;color:var(--pv-text);background:0 0;border:0;border-radius:0;outline:none;padding:8px 0;font-size:16px}.hero-search form input::placeholder{color:var(--pv-text-secondary);opacity:1}.hero-search form input:focus-visible{outline:none}.hero-search form button{background:var(--pv-primary);width:52px;min-width:52px;height:52px;min-height:52px;color:var(--pv-primary-text);cursor:pointer;border:0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;padding:0;font-size:14px;font-weight:600;transition:background .18s,box-shadow .18s;display:flex}.hero-search form button:active{box-shadow:inset 0 0 0 3px var(--pv-shadow)}.hero-search form button:disabled{cursor:progress}.search-loading{animation:.9s linear infinite search-pending}@keyframes search-pending{to{transform:rotate(360deg)}}.hero-search form button:hover{background:var(--pv-primary-hover)}.hero-search-results{border:1px solid var(--pv-border);background:var(--pv-surface);width:100%;box-shadow:0 16px 36px -16px var(--pv-shadow);border-radius:18px;animation:.16s ease-out search-reveal;position:absolute;top:calc(100% + 12px);overflow:hidden}@keyframes search-reveal{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.hero-search-results [role=listbox]{overscroll-behavior:contain;max-height:min(440px,52vh);padding:8px;overflow-y:auto}.search-group-heading{letter-spacing:.1em;text-transform:uppercase;color:var(--pv-text-secondary);align-items:center;gap:8px;padding:12px 12px 6px;font-size:10px;font-weight:600;display:flex}.hero-search-results [role=option]{cursor:pointer;border-radius:10px;justify-content:space-between;align-items:center;gap:16px;min-height:60px;padding:12px;display:flex}.hero-search-results [role=option]>span{min-width:0}.hero-search-results [role=option]>svg{flex-shrink:0}.hero-search-results [role=option] strong{font-size:14px;font-weight:600;display:block}.hero-search-results [role=option] small{-webkit-line-clamp:2;color:var(--pv-text-secondary);-webkit-box-orient:vertical;margin-top:3px;font-size:12px;line-height:1.5;display:-webkit-box;overflow:hidden}.hero-search-results [role=option][aria-selected=true],.hero-search-results [role=option]:hover{background:var(--pv-surface-secondary)}.search-all{border-top:1px solid var(--pv-border);background:var(--pv-surface-secondary);justify-content:space-between;align-items:center;gap:12px;min-height:48px;padding:14px 20px;font-size:13px;font-weight:600;display:flex}.search-empty{padding:24px;font-size:15px;line-height:1.7}.hero-shortcuts{flex-wrap:wrap;justify-content:center;gap:10px;margin:20px 0 0;display:flex}.hero-shortcuts a{border:1px solid var(--pv-border);background:var(--pv-surface);border-radius:99px;justify-content:center;align-items:center;gap:8px;min-height:44px;padding:10px 16px;font-size:13px;font-weight:500;transition:background .18s,border-color .18s;display:inline-flex}.hero-shortcuts a:active{background:var(--pv-accent)}.hero-shortcuts a:hover{background:var(--pv-surface-secondary);border-color:var(--pv-text-secondary)}.hero-start{color:var(--pv-text-secondary);flex-wrap:wrap;justify-content:center;align-items:center;gap:0 16px;margin-top:20px;font-size:13px;display:flex}.hero-start a{text-underline-offset:4px;align-items:center;gap:3px;min-height:44px;text-decoration:none;display:inline-flex}.hero-start a:hover{text-decoration:underline}.home-hero-trust{color:var(--pv-text-secondary);flex-wrap:wrap;justify-content:center;gap:12px 24px;margin:24px 0 8px;padding:0;font-size:11px;list-style:none;display:flex}.home-hero-trust li{align-items:center;gap:6px;display:flex}.home-hero-review{color:var(--pv-text-secondary);margin:0;font-size:12px;line-height:1.7}.home-hero-review a{text-underline-offset:3px;align-items:center;gap:3px;text-decoration:underline;display:inline-flex}.knowledge-preview{text-align:left;border:1px solid var(--pv-border);background:var(--pv-surface);width:100%;max-width:1000px;box-shadow:0 16px 48px -16px var(--pv-shadow);border-radius:24px;margin-top:36px;overflow:hidden}.preview-heading{border-bottom:1px solid var(--pv-border);justify-content:space-between;align-items:center;gap:16px;padding:20px 28px;display:flex}.preview-heading h2{font-family:var(--font-body);letter-spacing:.12em;margin:0;font-size:10px;font-weight:600}.preview-heading>span{color:var(--pv-text-secondary);font-size:11px}.preview-query{background:var(--pv-surface-secondary);justify-content:space-between;align-items:center;gap:20px;padding:24px 28px;display:flex}.preview-query-label{letter-spacing:.1em;color:var(--pv-text-secondary);margin-bottom:6px;font-size:9px;font-weight:600;display:block}.preview-query strong{font-family:var(--font-heading);letter-spacing:-.035em;font-size:23px;font-weight:600}.preview-query>a{align-items:center;gap:10px;min-height:44px;font-size:12px;font-weight:600;display:flex}.preview-documents{grid-template-columns:repeat(3,minmax(0,1fr));padding:8px 12px;display:grid}.preview-document{border-radius:12px;flex-direction:column;min-width:0;padding:20px 16px;transition:background .18s;display:flex}.preview-document+.preview-document{border-left:1px solid var(--pv-border);border-radius:0}.preview-document:hover{background:var(--pv-surface-secondary)}.preview-category{letter-spacing:.08em;color:var(--pv-text-secondary);align-items:center;gap:8px;font-size:9px;font-weight:600;display:flex}.preview-category svg{flex-shrink:0}.preview-document h3{letter-spacing:-.025em;margin:16px 0 8px;font-size:17px;font-weight:600;line-height:1.4}.preview-document p{color:var(--pv-text-secondary);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:0 0 16px;font-size:12px;line-height:1.65;display:-webkit-box;overflow:hidden}.preview-open{justify-content:space-between;align-items:center;gap:8px;min-height:24px;margin-top:auto;font-size:11px;font-weight:500;display:flex}.preview-footnote{color:var(--pv-text-secondary);border-top:1px solid var(--pv-border);margin:0;padding:12px 28px;font-size:11px;line-height:1.6}.knowledge-section.wrap{border-top:1px solid var(--pv-border);max-width:1200px;padding-block:48px 16px}.knowledge-heading{grid-template-columns:1.2fr 1fr;align-items:end;column-gap:80px;margin-bottom:32px;display:grid}.knowledge-heading .eyebrow{letter-spacing:.13em;grid-column:1/-1;margin-bottom:16px;font-size:10px}.knowledge-heading h2{letter-spacing:-.04em;margin:0;font-size:clamp(30px,3vw,40px);font-weight:600;line-height:1.2}.knowledge-heading>p{color:var(--pv-text-secondary);max-width:380px;margin:0;font-size:15px;line-height:1.75}.knowledge-grid{grid-template-columns:1.15fr 1fr;gap:16px;display:grid}.knowledge-card{border:1px solid var(--pv-border);background:var(--pv-surface);border-radius:20px;flex-direction:column;padding:28px;transition:border-color .18s,background .18s;display:flex;overflow:hidden}.knowledge-card:hover{border-color:var(--pv-text-secondary);background:var(--pv-surface-secondary)}.knowledge-card-top{color:var(--pv-text-secondary);letter-spacing:.12em;justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px;font-size:10px;font-weight:600;display:flex}.knowledge-card h3{letter-spacing:-.035em;margin:20px 0 8px;font-size:23px;font-weight:600}.knowledge-card>p{color:var(--pv-text-secondary);max-width:370px;margin:0 0 20px;font-size:14px;line-height:1.7}.knowledge-cta{align-items:center;gap:8px;margin-top:auto;font-size:12px;font-weight:600;display:flex}.library-specimen{border:1px solid 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