/* ============================================================
   CIRCO2™ — us-circo2.us — style.css
   Theme     : Ocean Blue (#0284C7) + Deep Teal (#0B4F6C) + Ice White (#F0FDFF)
   Font      : Montserrat (clean bold display) + Open Sans (trusted body) — neither used before
   Prefix    : co2-
   Animation : .rise-in / .risen (new — thematic with oxygen/molecules rising)
   Hero      : Product center-stage on deep blue gradient
   ============================================================ */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --ob:   #0284C7; /* ocean blue */
  --ob2:  #0369A1;
  --dt:   #0B4F6C; /* deep teal */
  --dt2:  #083D56;
  --ic:   #F0FDFF; /* ice white */
  --icp:  #E0F7FF; /* pale ice */
  --wh:   #FFFFFF;
  --of:   #F5FAFE;
  --ink:  #06202E;
  --mu:   #3E5E72;
  --bd:   #C7E5F5;
  --bd2:  #A8D4EC;
  --r: 8px; --pill: 50px
}

.co2-w{max-width:1180px;margin:0 auto;padding:0 20px}
html{scroll-behavior:smooth}
body{font-family:'Open Sans',system-ui,-apple-system,sans-serif;font-size:17px;color:var(--ink);background:var(--wh);overflow-x:hidden;line-height:1.72;font-weight:400}
b,strong{font-weight:700}
h1,h2,h3,h4{font-family:'Montserrat',sans-serif;font-weight:700}

/* ── TICKER ── */
.co2-ticker{background:var(--dt);color:rgba(255,255,255,.7);text-align:center;padding:8px 20px;display:flex;justify-content:center;align-items:center;gap:20px;flex-wrap:wrap;font-size:.78rem;font-weight:600;letter-spacing:.2px}

/* ── NAV ── */
nav{position:sticky;top:0;z-index:100;background:var(--dt2);height:64px;transition:box-shadow .3s}
.co2-nav-row{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
.co2-logo{font-family:'Montserrat',sans-serif;font-size:1.15rem;font-weight:700;color:var(--wh);text-decoration:none;flex-shrink:0}
.co2-nav{display:flex;align-items:center;gap:14px;list-style:none}
.co2-nav a{color:rgba(255,255,255,.55);text-decoration:none;font-size:.83rem;font-weight:600;transition:color .2s;white-space:nowrap}
.co2-nav a:hover{color:#7DD3FC}
.co2-nav-cta{background:var(--ob)!important;color:var(--wh)!important;padding:9px 20px;border-radius:var(--pill);font-weight:700!important;font-size:.82rem!important;transition:background .2s,transform .15s!important}
.co2-nav-cta:hover{background:var(--ob2)!important;transform:translateY(-1px)}
.co2-burger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:4px}
.co2-burger span{width:24px;height:2px;background:#7DD3FC;display:block;border-radius:2px}
.co2-drawer{display:none;flex-direction:column;background:var(--dt);padding:20px;gap:12px;position:absolute;top:64px;left:0;right:0;z-index:99;box-shadow:0 8px 20px rgba(6,32,46,.6);border-bottom:2px solid rgba(125,211,252,.25)}
.co2-drawer.open{display:flex}
.co2-drawer a{color:rgba(255,255,255,.6);text-decoration:none;font-size:1rem;font-weight:600;padding:6px 0;border-bottom:1px solid rgba(255,255,255,.09)}
.co2-drawer a:hover{color:#7DD3FC}
.co2-drawer-cta{background:var(--ob);color:var(--wh)!important;text-align:center;padding:13px;border-radius:var(--pill);font-weight:700;margin-top:6px;border-bottom:none!important}

/* ── BUTTONS ── */
.co2-btn{display:inline-block;background:var(--ob);color:var(--wh);font-weight:700;font-size:.95rem;padding:13px 30px;border-radius:var(--pill);text-decoration:none;transition:background .2s,transform .15s;box-shadow:0 3px 14px rgba(2,132,199,.35)}
.co2-btn:hover{background:var(--ob2);transform:translateY(-2px);box-shadow:0 5px 20px rgba(2,132,199,.5)}
.co2-btn-lg{font-size:1rem;padding:15px 36px}
.co2-btn-xl{font-size:1.05rem;padding:15px 42px}

/* ── BARS ── */
.co2-bar{background:linear-gradient(135deg,var(--dt2) 0%,var(--dt) 100%);padding:46px 20px 38px;text-align:center}
.co2-bar h2,.co2-bar h3{font-size:1.82rem;font-weight:700;color:var(--wh);line-height:1.22;margin-bottom:8px}
.co2-bar p{font-size:.94rem;color:rgba(255,255,255,.5);margin-top:6px}
.co2-bar-tl{background:linear-gradient(135deg,var(--ob2) 0%,var(--dt2) 100%)}
.co2-bar-dk{background:linear-gradient(135deg,#020D14 0%,var(--dt2) 100%)}

/* ── HERO — product center-stage deep blue ── */
.co2-hero{background:linear-gradient(170deg,var(--dt2) 0%,var(--dt) 45%,#0C6E9E 100%);padding:60px 0;position:relative;overflow:hidden}
.co2-hero-overlay{position:absolute;inset:0;background-image:radial-gradient(circle at 50% 35%,rgba(125,211,252,.12) 0%,transparent 60%),radial-gradient(circle at 85% 20%,rgba(2,132,199,.1) 0%,transparent 45%);pointer-events:none}
.co2-hero-body{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;text-align:center;gap:28px}

.co2-hero-top{max-width:860px;width:100%}
.co2-hero-label{display:inline-block;font-size:.76rem;font-weight:600;text-transform:uppercase;letter-spacing:1.4px;color:#7DD3FC;background:rgba(125,211,252,.12);border:1px solid rgba(125,211,252,.25);padding:6px 20px;border-radius:var(--pill);margin-bottom:16px}
.co2-quick-def{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-left:4px solid var(--ob);border-radius:var(--r);padding:14px 18px;margin-bottom:18px;font-size:.9rem;line-height:1.68;color:rgba(255,255,255,.8);text-align:left}
.co2-hero-top h1{font-size:1.88rem;color:var(--wh);line-height:1.18;margin-bottom:14px}
.co2-hero-sub{font-size:1rem;line-height:1.8;color:rgba(255,255,255,.6);text-align:center}

.co2-hero-mid{display:flex;align-items:center;gap:40px;max-width:900px;width:100%}
.co2-hero-product{flex-shrink:0}
.co2-hero-product a img{max-width:240px;filter:drop-shadow(0 0 30px rgba(125,211,252,.3));transition:transform .4s;display:block}
.co2-hero-product a:hover img{transform:scale(1.05)}

.co2-hero-feats{display:flex;flex-direction:column;gap:10px;flex:1;text-align:left}
.co2-feat{display:flex;align-items:flex-start;gap:12px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);border-radius:var(--r);padding:12px 16px}
.co2-feat-ico{font-size:1.3rem;flex-shrink:0;margin-top:1px}
.co2-feat strong{display:block;font-size:.87rem;font-weight:700;color:var(--wh);line-height:1.25}
.co2-feat em{font-size:.77rem;color:rgba(255,255,255,.5);font-style:normal}

.co2-hero-bottom{display:flex;flex-direction:column;align-items:center;gap:14px}
.co2-hero-price{display:flex;align-items:flex-end;gap:8px;background:rgba(2,132,199,.2);border:1px solid rgba(125,211,252,.3);border-radius:var(--r);padding:12px 24px;flex-wrap:wrap;justify-content:center}
.co2-hp-from{font-size:.88rem;color:rgba(255,255,255,.5);padding-bottom:2px}
.co2-hp-amt{font-family:'Montserrat',sans-serif;font-size:2.2rem;font-weight:700;color:#7DD3FC;line-height:1}
.co2-hp-per{font-size:.88rem;color:rgba(255,255,255,.5);padding-bottom:2px}
.co2-hp-ship{font-size:.8rem;font-weight:600;color:#7DD3FC;background:rgba(125,211,252,.12);border:1px solid rgba(125,211,252,.2);padding:4px 12px;border-radius:var(--pill);margin-left:6px}
.co2-hero-trust{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 18px}
.co2-hero-trust span{font-size:.82rem;font-weight:600;color:rgba(255,255,255,.4)}

/* ── PRICE ZONE ── */
.co2-price-zone{background:var(--dt2);padding:40px 20px;text-align:center}
.co2-price-zone a{display:inline-block}
.co2-price-zone a img{max-width:960px;width:100%;height:auto;border-radius:var(--r);transition:transform .3s;box-shadow:0 4px 24px rgba(0,0,0,.5)}
.co2-price-zone a:hover img{transform:scale(1.01)}

/* ── NITRIC OXIDE STORY SECTION ── */
.co2-no-section{background:var(--of);padding:60px 0}
.co2-no-intro{max-width:780px;margin:0 auto 28px;text-align:center}
.co2-no-intro p{font-size:1rem;line-height:1.82;color:var(--mu)}
.co2-no-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:22px}
.co2-no-card{background:var(--wh);border:1px solid var(--bd);border-radius:var(--r);border-top:3px solid var(--ob);padding:24px 20px;transition:box-shadow .3s}
.co2-no-card:hover{box-shadow:0 4px 16px rgba(2,132,199,.12)}
.co2-no-ico{font-size:1.9rem;display:block;margin-bottom:10px}
.co2-no-card h3{font-size:.98rem;font-weight:700;color:var(--ink);margin-bottom:8px;line-height:1.35}
.co2-no-card p{font-size:.87rem;line-height:1.74;color:var(--mu)}
.co2-no-cta{text-align:center;background:var(--icp);border:1px solid var(--bd2);border-top:4px solid var(--ob);border-radius:var(--r);padding:22px;font-size:1rem;font-weight:700;color:var(--ink)}

/* ── ABOUT ── */
.co2-about{background:var(--wh);padding:60px 0}
.co2-about-grid{display:grid;grid-template-columns:1fr 380px;align-items:center;gap:52px}
.co2-about-copy p{font-size:1rem;line-height:1.82;color:var(--mu);margin-bottom:14px}
.co2-about-img img{max-width:100%;filter:drop-shadow(0 10px 28px rgba(2,132,199,.16));border-radius:var(--r)}

/* ── INGREDIENTS — split rows ── */
.co2-ing-section{background:var(--icp);padding:60px 0}
.co2-ing-intro{max-width:780px;margin:0 auto 28px;text-align:center}
.co2-ing-intro p{font-size:1rem;line-height:1.8;color:var(--mu)}
.co2-ing-list{max-width:860px;margin:0 auto;border-radius:var(--r);overflow:hidden;border:1px solid var(--bd2)}
.co2-ing-row{display:grid;grid-template-columns:220px 1fr;background:var(--wh);border-bottom:1px solid var(--bd)}
.co2-ing-row:last-child{border-bottom:none}
.co2-ing-alt{background:var(--of)}
.co2-ing-left{display:flex;align-items:center;gap:12px;padding:20px;border-right:1px solid var(--bd);background:rgba(2,132,199,.04)}
.co2-ing-ico{font-size:1.7rem;flex-shrink:0}
.co2-ing-left h3{font-family:'Montserrat',sans-serif;font-size:.87rem;font-weight:700;color:var(--dt);line-height:1.3;margin-bottom:4px}
.co2-ing-role{font-size:.71rem;font-weight:600;color:var(--ob2);text-transform:uppercase;letter-spacing:.4px;display:block}
.co2-ing-desc{padding:20px 22px;font-size:.86rem;line-height:1.7;color:var(--mu);display:flex;align-items:center}

/* ── REVIEWS — 3-col cards ── */
.co2-reviews{background:var(--of);padding:60px 0}
.co2-rv-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.co2-rv-card{background:var(--wh);border:1px solid var(--bd);border-radius:var(--r);border-top:3px solid var(--ob);padding:22px 20px;transition:box-shadow .3s;display:flex;flex-direction:column;gap:12px}
.co2-rv-card:hover{box-shadow:0 4px 14px rgba(2,132,199,.1)}
.co2-rv-top{display:flex;align-items:center;gap:12px}
.co2-rv-photo{width:52px;height:52px;border-radius:50%;object-fit:cover;border:2px solid var(--ob);flex-shrink:0}
.co2-rv-name{font-weight:700;color:var(--ink);font-size:.88rem;display:block;line-height:1.3}
.co2-rv-stars{font-size:.85rem;color:#D48B10;letter-spacing:2px;display:block;margin-top:2px}
.co2-rv-ver{font-size:.72rem;font-weight:700;color:var(--ob2);text-transform:uppercase;letter-spacing:.3px;display:block;margin-top:2px}
.co2-rv-text{font-size:.9rem;line-height:1.74;color:var(--mu);font-style:italic;flex:1}

/* ── GUARANTEE ── */
.co2-guar{background:var(--wh);padding:60px 0}
.co2-guar-grid{display:grid;grid-template-columns:200px 1fr;align-items:center;gap:44px;max-width:860px;margin:0 auto}
.co2-gg-img img{max-width:100%;filter:drop-shadow(0 4px 14px rgba(2,132,199,.14));border-radius:var(--r)}
.co2-gg-text h3{font-size:1.25rem;color:var(--ink);margin-bottom:14px;line-height:1.3}
.co2-gg-text p{font-size:.96rem;line-height:1.78;color:var(--mu);margin-bottom:12px}

/* ── FAQ ── */
.co2-faq{background:var(--icp);padding:60px 0}
.co2-faq-list{display:flex;flex-direction:column;gap:10px}
.co2-fq-item{background:var(--wh);border:1px solid var(--bd2);border-radius:var(--r);overflow:hidden;transition:border-color .2s}
.co2-fq-item.open{border-color:var(--ob)}
.co2-fq-btn{width:100%;background:none;border:none;text-align:left;padding:17px 20px;font-family:'Open Sans',sans-serif;font-size:.94rem;font-weight:600;color:var(--ink);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;transition:background .2s;line-height:1.4}
.co2-fq-btn:hover{background:var(--icp)}
.co2-fq-item.open .co2-fq-btn{background:var(--icp);color:var(--ob2)}
.co2-fq-ico{font-size:.88rem;color:var(--ob);flex-shrink:0;transition:transform .3s}
.co2-fq-item.open .co2-fq-ico{transform:rotate(180deg)}
.co2-fq-body{display:none;padding:14px 20px 18px;font-size:.92rem;line-height:1.78;color:var(--mu);border-top:1px solid var(--bd)}
.co2-fq-item.open .co2-fq-body{display:block}

/* ── FINAL CTA ── */
.co2-cta{background:linear-gradient(150deg,var(--dt2) 0%,var(--dt) 60%,#0A3E5C 100%);padding:64px 0;text-align:center}
.co2-cta-inner{display:flex;flex-direction:column;align-items:center}
.co2-cta h2{font-size:1.82rem;color:var(--wh);margin-bottom:10px;line-height:1.22;max-width:760px}
.co2-cta-lead{font-size:.97rem;color:rgba(255,255,255,.6);margin-bottom:22px;max-width:700px;line-height:1.75}
.co2-cta-perks{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 16px;margin-bottom:28px;max-width:700px}
.co2-cta-perks span{font-size:.86rem;font-weight:600;color:rgba(255,255,255,.55)}

/* ── FOOTER ── */
footer{background:var(--dt2);padding:44px 20px 24px;border-top:1px solid rgba(255,255,255,.06)}
.co2-ft-top{text-align:center;margin-bottom:16px}
.co2-ft-brand{font-family:'Montserrat',sans-serif;font-size:1.35rem;font-weight:700;color:#7DD3FC;margin-bottom:4px}
.co2-ft-tag{font-size:.82rem;color:rgba(255,255,255,.25)}
.co2-ft-nav-lbl{text-align:center;font-size:.7rem;font-weight:700;color:#7DD3FC;text-transform:uppercase;letter-spacing:1.5px;margin:16px 0 10px}
.co2-ft-nav{display:flex;flex-wrap:wrap;justify-content:center;background:rgba(255,255,255,.04);border-radius:var(--r);padding:14px 16px;margin-bottom:24px;gap:4px;border:1px solid rgba(255,255,255,.07)}
.co2-ft-nav a{color:rgba(255,255,255,.4);text-decoration:none;font-size:.86rem;font-weight:600;padding:5px 14px;border-right:1px solid rgba(255,255,255,.07);transition:color .2s,background .2s,border-radius .2s;white-space:nowrap}
.co2-ft-nav a:last-child{border-right:none}
.co2-ft-nav a:hover{color:var(--dt2);background:#7DD3FC;border-radius:20px;border-right:1px solid transparent}
.co2-ft-legal{max-width:1000px;margin:0 auto;border-top:1px solid rgba(255,255,255,.06);padding-top:20px}
.co2-ft-disc{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08);border-radius:var(--r);padding:16px 20px;margin-bottom:16px}
.co2-ft-disc strong{font-size:.82rem;color:#7DD3FC;display:block;margin-bottom:8px}
.co2-ft-disc p{font-size:.77rem;line-height:1.7;color:rgba(255,255,255,.28);margin-bottom:8px}
.co2-ft-disc p:last-child{margin-bottom:0}
.co2-ft-links{text-align:center;margin-bottom:14px;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:6px}
.co2-ft-links a{color:rgba(255,255,255,.4);text-decoration:none;font-size:.82rem;font-weight:600;transition:color .2s}
.co2-ft-links a:hover{color:#7DD3FC;text-decoration:underline}
.co2-ft-links span{color:rgba(255,255,255,.12)}
.co2-ft-copy{text-align:center;font-size:.78rem;color:rgba(255,255,255,.18)}
.co2-ft-copy a{color:rgba(255,255,255,.3);text-decoration:none}
.co2-ft-copy a:hover{color:#7DD3FC}

/* ── RISE-IN — new animation ── */
.rise-in{opacity:0;transform:translateY(18px);transition:opacity .55s ease,transform .55s ease}
.rise-in.risen{opacity:1;transform:translateY(0)}

/* ── RESPONSIVE ── */
@media(max-width:1040px){
  .co2-hero-mid{flex-direction:column}
  .co2-hero-feats{width:100%;max-width:580px}
  .co2-no-grid{grid-template-columns:1fr}
  .co2-about-grid{grid-template-columns:1fr}
  .co2-about-img img{max-width:280px;margin:0 auto;display:block}
  .co2-rv-grid{grid-template-columns:1fr}
  .co2-guar-grid{grid-template-columns:1fr;text-align:center}
  .co2-ing-row{grid-template-columns:1fr}
  .co2-ing-left{border-right:none;border-bottom:1px solid var(--bd)}
}
@media(max-width:700px){
  nav{padding:0}
  .co2-w.co2-nav-row{padding:0 16px}
  .co2-nav{display:none}
  .co2-burger{display:flex}
  .co2-hero{padding:44px 0}
  .co2-hero-top h1{font-size:1.55rem}
  .co2-bar{padding:36px 16px 28px}
  .co2-bar h2,.co2-bar h3{font-size:1.5rem}
  .co2-no-section,.co2-about,.co2-ing-section,
  .co2-reviews,.co2-guar,.co2-faq{padding:44px 0}
  .co2-price-zone{padding:24px 16px}
  .co2-cta{padding:48px 16px}
  .co2-cta h2{font-size:1.5rem}
  .co2-ticker{gap:10px;font-size:.74rem}
  footer{padding:36px 16px 20px}
  .co2-ft-nav a{border-right:none;padding:5px 10px}
}