/* ProtoFlow — prostafllow.com — prefix pf- */
:root{
  --ink:#1B241D;
  --ink-soft:#57614F;
  --green:#1F4A34;
  --green-dark:#153526;
  --green-tint:#E7F0EA;
  --gold:#B8860B;
  --cream:#FBF9F2;
  --cream-2:#F2EFE3;
  --line:rgba(27,36,29,.13);
  --white:#FFFFFF;
  --good:#2F7A4F;
  --radius:14px;
  --shadow:0 20px 44px -20px rgba(27,36,29,.26);
  --font-head:'Spectral',Georgia,serif;
  --font-body:'Karla',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;max-width:100%;overflow-x:clip}
body{margin:0;font-family:var(--font-body);color:var(--ink);background:var(--white);font-size:17px;line-height:1.65;max-width:100%;overflow-x:clip;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-head);color:var(--ink);line-height:1.22;margin:0 0 .5em;font-weight:600}
h1{font-size:clamp(1.6rem,3.4vw,2.4rem)}
h2{font-size:clamp(1.4rem,2.8vw,2.05rem)}
h3{font-size:1.18rem}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
.pf-wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.pf-eyebrow{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--green-dark);background:var(--green-tint);padding:6px 14px;border-radius:99px;margin-bottom:14px}

/* topbar + strip + nav */
.pf-topbar{background:var(--green);color:#fff;text-align:center;font-size:12.5px;font-weight:700;letter-spacing:.02em;padding:9px 40px 9px 16px;position:relative}
.pf-topbar-close{position:absolute;right:12px;top:50%;transform:translateY(-50%);background:none;border:0;color:#fff;font-size:16px;line-height:1;cursor:pointer;padding:4px;opacity:.85}
.pf-topbar.hidden{display:none}
.pf-strip{background:var(--green-dark);color:#E3ECE6;font-size:12.5px;padding:8px 0;text-align:center}
.pf-strip span{margin:0 10px;white-space:nowrap}
.pf-nav{border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(251,249,242,.98);z-index:40}
.pf-nav .pf-wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;flex-wrap:wrap}
.pf-logo{font-family:var(--font-head);font-weight:700;font-size:21px;color:var(--ink)}
.pf-logo em{font-style:normal;color:var(--green)}
.pf-links{display:flex;align-items:center;gap:22px;font-size:14px;font-weight:700;flex-wrap:wrap}
.pf-links a:not(.pf-btn):hover{color:var(--green)}
.pf-toggle{display:none;background:none;border:0;font-size:24px;cursor:pointer}
.pf-btn{background:var(--green);color:#fff;padding:12px 22px;border-radius:8px;font-weight:800;font-size:14px;display:inline-block;border:0;cursor:pointer;transition:transform .15s,box-shadow .15s}
.pf-btn:hover{transform:translateY(-1px);box-shadow:0 10px 22px -10px rgba(31,74,52,.5)}
.pf-btn-ghost{background:none;border:1.5px solid var(--line);color:var(--ink);padding:11px 20px;border-radius:8px;font-weight:800;font-size:14px;display:inline-block}
.pf-btn-pulse{animation:pfPulse 1.8s ease-in-out infinite}
@media(prefers-reduced-motion:reduce){.pf-btn-pulse{animation:none}}
@keyframes pfPulse{0%,100%{transform:scale(1);box-shadow:0 0 0 0 rgba(31,74,52,.4)}50%{transform:scale(1.04);box-shadow:0 0 0 12px rgba(31,74,52,0)}}
@media(max-width:900px){.pf-links{position:fixed;inset:0;z-index:55;background:var(--cream);flex-direction:column;justify-content:center;padding:30px;gap:20px;transform:translateY(-120%);transition:transform .25s;overflow-y:auto}
  .pf-links.open{transform:translateY(0)}
  .pf-toggle{display:flex}
  body.pf-menu-open .pf-topbar,body.pf-menu-open .pf-strip{display:none}
  body.pf-menu-open .pf-toggle{position:fixed;top:14px;right:20px;width:42px;height:42px;align-items:center;justify-content:center;background:#fff;border:1px solid var(--line);border-radius:50%;box-shadow:var(--shadow);z-index:60}}

/* hero */
.pf-hero{padding:40px 0 20px;background:radial-gradient(900px 420px at 90% -10%,var(--green-tint) 0%,transparent 62%),var(--cream)}
.pf-hero-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;align-items:center}
.pf-hero-visual{grid-row:1}
.pf-hero-copy{grid-row:2}
@media(min-width:961px){.pf-hero-grid{grid-template-columns:1.05fr .95fr}.pf-hero-visual{grid-row:1;order:2}.pf-hero-copy{grid-row:1;order:1}}
.pf-hero-copy h1 em{font-style:normal;color:var(--green)}
.pf-hero-para{color:var(--ink-soft);font-size:17.5px;margin:14px 0 18px}
.pf-check{margin:16px 0}
.pf-check li{position:relative;padding-left:26px;margin-bottom:9px;font-size:15px}
.pf-check li::before{content:'\2713';position:absolute;left:0;color:var(--good);font-weight:800}
.pf-stat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:20px 0}
.pf-stat{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 8px;text-align:center}
.pf-stat b{display:block;font-family:var(--font-head);font-size:21px;color:var(--green)}
.pf-stat span{font-size:11px;color:var(--ink-soft)}
.pf-hero-btns{display:flex;gap:14px;flex-wrap:wrap;margin:18px 0 12px}
.pf-hero-trust{display:flex;gap:14px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-soft)}
.pf-hero-trust span::before{content:'\2022 '}
.pf-hero-trust span:first-child::before{content:''}
.pf-hero-bottle{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:20px;max-width:320px;margin:0 auto}
.pf-hero-viz{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow);margin-top:16px}
.pf-hero-viz h5{margin:0 0 10px;font-family:var(--font-head);font-size:12.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft);text-align:center;font-weight:700}
.pf-hero-viz .cap{font-size:11px;color:var(--ink-soft);text-align:center;margin-top:8px}
@media(prefers-reduced-motion:no-preference){
  .pf-drop{animation:pfDrip 2.4s ease-in-out infinite}
}
@keyframes pfDrip{0%{transform:translateY(0);opacity:1}80%{transform:translateY(14px);opacity:0}100%{transform:translateY(14px);opacity:0}}

/* section */
.pf-sec{padding:62px 0}
.pf-sec-tint{background:var(--cream-2)}
.pf-head{max-width:720px;margin:0 auto 32px;text-align:center}
.pf-head p{color:var(--ink-soft)}

/* badges */
.pf-badges{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
@media(max-width:760px){.pf-badges{grid-template-columns:repeat(2,minmax(0,1fr))}}
.pf-badge{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 12px;text-align:center}
.pf-badge img{height:56px;width:auto;margin:0 auto 10px;object-fit:contain}
.pf-badge h4{font-size:13px;margin:0 0 4px}
.pf-badge p{font-size:11.5px;color:var(--ink-soft);margin:0}

/* split */
.pf-split{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:44px;align-items:center}
@media(max-width:860px){.pf-split{grid-template-columns:minmax(0,1fr)}}
.pf-split img{border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line)}
.pf-callout{background:#fff;border-left:4px solid var(--green);border-radius:0 10px 10px 0;padding:16px 18px;font-size:14px;color:var(--ink-soft);margin-top:16px}
.pf-warn{background:#FDF2EC;border-left:4px solid #B5602E;border-radius:0 10px 10px 0;padding:16px 18px;font-size:14px;color:#6B3A1D;margin-top:16px}
.pf-warn strong{color:#6B3A1D}

/* ingredient boxes */
.pf-ing-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
@media(max-width:900px){.pf-ing-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.pf-ing-grid{grid-template-columns:1fr}}
.pf-ing-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.pf-ing-box .tag{display:inline-block;font-size:10.5px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;color:var(--green-dark);background:var(--green-tint);padding:4px 10px;border-radius:99px;margin-bottom:10px}
.pf-ing-box h4{margin:0 0 8px;font-size:15px}
.pf-ing-box p{margin:0;font-size:13px;color:var(--ink-soft)}

/* grid */
.pf-grid{display:grid;gap:20px}
.pf-g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.pf-g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:860px){.pf-g3,.pf-g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.pf-g3,.pf-g4{grid-template-columns:1fr}}
.pf-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.pf-card h4{margin:0 0 8px;font-size:16px}
.pf-card p{margin:0;font-size:14px;color:var(--ink-soft)}
.pf-num{width:34px;height:34px;border-radius:9px;background:var(--green-tint);color:var(--green-dark);font-family:var(--font-head);font-weight:700;display:flex;align-items:center;justify-content:center;margin-bottom:12px}

/* bonus books */
.pf-bonus-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
@media(max-width:860px){.pf-bonus-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.pf-bonus-grid{grid-template-columns:1fr}}
.pf-bonus-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;text-align:center}
.pf-bonus-card img{border-radius:10px;margin-bottom:12px;box-shadow:var(--shadow)}
.pf-bonus-card h4{font-size:14px;margin:0 0 6px}
.pf-bonus-card .free{display:inline-block;font-size:10.5px;font-weight:800;color:var(--good);background:#E4F3EA;padding:3px 10px;border-radius:99px}

/* reviews */
.pf-rev-head{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.pf-rev-avatar{width:48px;height:48px;border-radius:50%;overflow:hidden;flex-shrink:0;border:1px solid var(--line)}
.pf-rev-avatar img{width:100%;height:100%;object-fit:cover}
.pf-rev-name{font-weight:800;font-size:14.5px}
.pf-rev-sub{font-size:12px;color:var(--ink-soft)}
.pf-stars{color:var(--gold);letter-spacing:2px;margin-bottom:8px}
.pf-board{display:flex;justify-content:center;gap:44px;margin-top:32px;flex-wrap:wrap;text-align:center}
.pf-board div b{display:block;font-family:var(--font-head);font-size:25px;color:var(--green)}
.pf-board div span{font-size:12px;color:var(--ink-soft)}

/* pricing */
.pf-plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:start}
@media(max-width:900px){.pf-plans{grid-template-columns:minmax(0,1fr)}}
.pf-plan{background:#fff;border:1.5px solid var(--line);border-radius:var(--radius);padding:26px;text-align:center;position:relative}
.pf-plan.pop{border-color:var(--green);box-shadow:var(--shadow);transform:translateY(-6px)}
.pf-plan-badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--green);color:#fff;font-size:11px;font-weight:800;padding:5px 16px;border-radius:99px;white-space:nowrap}
.pf-plan img.pk{height:120px;width:auto;margin:6px auto 14px;object-fit:contain}
.pf-plan-ttl{font-family:var(--font-head);font-size:18px}
.pf-plan-sub{font-size:12.5px;color:var(--ink-soft);margin-bottom:10px}
.pf-plan-price{font-family:var(--font-head);font-size:29px;color:var(--green);margin:6px 0 0}
.pf-plan-was{font-size:12.5px;color:var(--ink-soft);text-decoration:line-through}
.pf-plan-total{font-size:13px;color:var(--ink-soft);margin-bottom:14px}
.pf-plan ul{text-align:left;margin:14px 0;font-size:13.5px}
.pf-plan ul li{position:relative;padding-left:22px;margin-bottom:7px}
.pf-plan ul li::before{content:'\2713';position:absolute;left:0;color:var(--good);font-weight:800}
.pf-plan .pf-btn{width:100%;text-align:center}
.pf-note{font-size:12.5px;color:var(--ink-soft);text-align:center;max-width:640px;margin:24px auto 0}

/* guarantee */
.pf-guar{display:grid;grid-template-columns:minmax(0,.5fr) minmax(0,1fr);gap:36px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:20px;padding:36px;box-shadow:var(--shadow)}
@media(max-width:820px){.pf-guar{grid-template-columns:minmax(0,1fr);text-align:center}}
.pf-guar img{max-width:170px;margin:0 auto}

/* steps */
.pf-steps{display:grid;gap:14px}
.pf-step{display:grid;grid-template-columns:auto 1fr;gap:16px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;align-items:start}
.pf-step b{font-family:var(--font-head);font-size:19px;color:var(--green);width:32px}

/* faq */
.pf-faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:12px}
.pf-faq summary{font-weight:800;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;font-size:15px}
.pf-faq summary::-webkit-details-marker{display:none}
.pf-faq summary::after{content:'+';font-size:20px;color:var(--green)}
.pf-faq details[open] summary::after{content:'\2013'}
.pf-faq p{margin:12px 0 0;color:var(--ink-soft);font-size:14.5px}

/* references */
.pf-refs{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.pf-refs li{padding:9px 0;border-bottom:1px solid var(--line);font-size:14.5px}
.pf-refs li:last-child{border-bottom:none}
.pf-refs a{color:var(--green);font-weight:700;text-decoration:underline}

/* blog teaser */
.pf-blogcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.pf-blogcard .bd{padding:18px 20px}
.pf-blogcard .tag{font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--green);font-weight:800}
.pf-blogcard svg{width:100%;height:120px;display:block}

/* final CTA */
.pf-final-cta{background:#fff;border:1.5px solid var(--green-tint);border-radius:22px;padding:48px 32px;box-shadow:var(--shadow);text-align:center;max-width:560px;margin:0 auto}
.pf-final-cta p{max-width:440px;margin-left:auto;margin-right:auto}
.pf-final-photo{max-width:260px;margin:24px auto;box-shadow:var(--shadow);border-radius:12px}
.pf-final-price{margin:8px 0 26px}
.pf-final-price .was{display:block;font-size:17px;font-weight:800;color:var(--ink-soft);text-decoration:line-through;margin-bottom:6px}
.pf-final-price .now{display:block;font-family:var(--font-head);font-size:clamp(2.6rem,7vw,4rem);font-weight:700;color:var(--green);line-height:1}
.pf-final-price .now small{font-size:18px;font-weight:600;color:var(--ink-soft)}

/* footer */
.pf-foot{background:var(--green-dark);color:#DCE6DF;padding:52px 0 100px;font-size:13.5px}
.pf-foot h5{color:#fff;font-family:var(--font-head);font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:.04em;margin-bottom:14px}
.pf-foot-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.4fr);gap:30px;margin-bottom:30px}
@media(max-width:820px){.pf-foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
.pf-foot li{margin-bottom:8px}
.pf-foot a:hover{color:#fff}
.pf-foot-legal{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;font-size:12px;color:#A6B8AA;line-height:1.7}
.pf-foot-legal strong{color:#DCE6DF}

/* sticky */
.pf-sticky{position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--line);box-shadow:0 -10px 30px -14px rgba(0,0,0,.18);padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:14px;z-index:50}
.pf-sticky span{font-size:13px;font-weight:800}
.pf-sticky .sub{display:block;font-size:11px;font-weight:400;color:var(--ink-soft)}

/* transparency table */
.pf-score{overflow-x:auto}
.pf-score table{width:100%;border-collapse:collapse;min-width:680px;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.pf-score th,.pf-score td{padding:13px 16px;border-bottom:1px solid var(--line);font-size:14px;text-align:left;vertical-align:top}
.pf-score th{background:var(--cream-2);font-size:12px;text-transform:uppercase;letter-spacing:.03em}
.pf-score td:nth-child(3){color:var(--ink-soft);font-size:13.5px}
.pf-score td.yes{color:var(--good);font-weight:800;white-space:nowrap}
.pf-score td.partial{color:var(--gold);font-weight:800;white-space:nowrap}

.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}