:root{--paper:#f8f3e9;--ink:#30221d;--red:#a9382c;--line:#d6c7b4;--wash:#ede4d5;--white:#fffdf8}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:1rem/1.65 Georgia,'Times New Roman',serif}a{color:var(--red);text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}a:focus-visible,summary:focus-visible{outline:3px solid var(--red);outline-offset:5px}.wrap{width:min(1120px,calc(100% - 48px));margin:auto}.skip{position:absolute;left:1rem;top:-6rem;z-index:10;background:white;padding:1rem}.skip:focus{top:1rem}header{border-bottom:1px solid var(--line)}.header{display:flex;justify-content:space-between;gap:24px;align-items:center;padding:24px 0}.brand{text-decoration:none;color:var(--ink);font-size:1.6rem;font-weight:bold;letter-spacing:.03em}.brand small{display:block;font: .875rem/1.3 system-ui,sans-serif;letter-spacing:0;font-weight:normal}.nav{display:flex;gap:26px;flex-wrap:wrap;font: .9375rem/1.5 system-ui,sans-serif}.nav a{color:var(--ink);text-decoration:none}.nav a:hover{text-decoration:underline}.eyebrow{font: .875rem/1.5 system-ui,sans-serif;text-transform:uppercase;letter-spacing:.12em;color:var(--red);margin:0 0 18px}h1,h2,h3{font-weight:normal;line-height:1.15;margin:0 0 20px}h1{font-size:clamp(2.45rem,5.2vw,4.2rem);letter-spacing:-.035em;max-width:800px}h2{font-size:clamp(1.8rem,3.1vw,2.7rem);letter-spacing:-.02em}h3{font-size:1.4rem}p{margin:0 0 20px}.hero{padding:66px 0 38px}.intro{font-size:1.2rem;max-width:780px}.cta{display:flex;gap:20px;align-items:center;flex-wrap:wrap;margin:30px 0 18px;font-family:system-ui,sans-serif}.button{background:var(--red);color:white;text-decoration:none;padding:14px 24px;font-size:1rem;border:1px solid var(--red);display:inline-block}.button:hover{background:#81291f}.note{font: .9375rem/1.6 system-ui,sans-serif;max-width:740px}.art{margin:34px 0 0;background:var(--wash);padding:18px;border:1px solid var(--line)}.art img{display:block;width:100%;height:auto}.art figcaption{padding:12px 6px 0;font:.875rem/1.5 system-ui,sans-serif;color:#655448}.section{padding:58px 0;border-bottom:1px solid var(--line)}.grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}.spec{border-top:1px solid var(--line);padding:15px 0;display:grid;grid-template-columns:140px 1fr;gap:20px;font-family:system-ui,sans-serif}.spec dt{font-weight:600}.spec dd{margin:0}.steps{counter-reset:step;list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.steps li{border-top:2px solid var(--red);padding-top:20px}.steps h3::before{counter-increment:step;content:counter(step,decimal-leading-zero);display:block;color:var(--red);font: .875rem/1.5 system-ui,sans-serif;margin-bottom:16px}.guide-card{border-top:2px solid var(--red);padding-top:24px}.guide-card a{font-size:1.7rem;line-height:1.2}.guide-card p{margin:18px 0 0}.faq details{border-top:1px solid var(--line);padding:18px 0}.faq summary{cursor:pointer;font:1.1rem/1.5 system-ui,sans-serif}.faq details p{margin:18px 0 0;max-width:840px}.article{max-width:820px;margin:auto;padding:58px 0}.article h1{font-size:clamp(2.4rem,4.4vw,3.5rem)}.article h2{font-size:1.85rem;margin:42px 0 16px}.article h3{margin-top:26px}.article .answer{font-size:1.2rem;border-left:3px solid var(--red);padding-left:24px}.byline,.breadcrumbs{font:.875rem/1.5 system-ui,sans-serif}.byline{color:#655448;margin-bottom:36px}.article li{margin-bottom:10px}.article img{width:100%;height:auto}.callout{background:var(--wash);padding:26px;margin:36px 0}.footer{padding:34px 0;font:.875rem/1.6 system-ui,sans-serif;display:flex;gap:22px;justify-content:space-between;flex-wrap:wrap}.footer p{margin:0;max-width:590px}.footer nav{display:flex;gap:18px;flex-wrap:wrap}.facts{font-family:system-ui,sans-serif}table{width:100%;border-collapse:collapse;margin:24px 0;font:1rem/1.6 system-ui,sans-serif}th,td{padding:16px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{font-weight:600;background:var(--wash)}@media(max-width:700px){.wrap{width:calc(100% - 32px)}.header{align-items:flex-start;flex-direction:column;padding:18px 0;gap:16px}.nav{gap:22px}.hero{padding:38px 0 24px}.grid,.steps{grid-template-columns:1fr;gap:30px}.section{padding:40px 0}.spec{grid-template-columns:105px 1fr;gap:16px}.art{padding:6px}.article{padding:36px 0}.article .answer{padding-left:16px}.cta{gap:16px}h1{letter-spacing:-.025em}.footer{gap:18px}table{font-size:.9375rem}th,td{padding:12px 7px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media print{header,.cta,.footer,.skip{display:none}body{background:white;color:black}.article{padding:0;max-width:none}.wrap{width:100%}a{color:inherit}.art{break-inside:avoid}details p{display:block}}

.demo-video{display:block;width:min(100%,360px);height:auto;margin:24px auto;background:#30221d}video:focus-visible{outline:3px solid var(--red);outline-offset:4px}

.proof-panel{margin-top:44px;padding-top:30px;border-top:1px solid var(--line)}.proof-panel>.grid{align-items:start}.proof-panel .demo-video{margin:0 auto 20px}.proof-panel table{font-size:.9375rem}.proof-panel h3{margin-bottom:18px}.proof-panel>p{margin-top:24px}

.guide-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}.table-scroll{overflow-x:auto}.article code{overflow-wrap:anywhere}@media(max-width:700px){.guide-grid{grid-template-columns:1fr;gap:30px}}

/* Actual-product purchase evidence, October 2026. */
.hero-layout{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}.hero-copy h1{font-size:clamp(2.4rem,4vw,3.65rem)}.hero-art{margin:0;padding:12px}.purchase-facts{list-style:none;padding:0;margin:22px 0;display:flex;flex-wrap:wrap;gap:8px;font:1rem/1.5 system-ui,sans-serif}.purchase-facts li{padding:7px 10px;border:1px solid var(--line);background:var(--white)}.hero-copy .cta{margin:22px 0 18px}.evidence-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.evidence-card{border-top:2px solid var(--red);padding-top:22px}.evidence-card img{width:100%;height:auto;display:block;margin:16px 0}.evidence-card video{display:block;width:100%;max-height:400px;background:var(--ink);margin:16px 0}.evidence-card p{font:1rem/1.65 system-ui,sans-serif}.evidence-card h3{font-size:1.5rem}.evidence-card a{font-family:system-ui,sans-serif}@media(max-width:850px){.hero-layout{grid-template-columns:1fr}.hero-art{max-width:720px}.evidence-grid{grid-template-columns:1fr}.evidence-card{max-width:720px}.evidence-card img{max-height:600px;object-fit:contain;object-position:left center}.evidence-card video{max-height:480px}.hero-copy h1{font-size:clamp(2.4rem,7vw,3.65rem)}}

#v4-demos video{display:block;width:100%;height:auto;max-height:620px;object-fit:contain;background:#f7f1e6}#v4-demos .evidence-grid{align-items:start}