/* ===================================================================
   OXYDENTAL — oxyydental.com
   Palette : deep teal #094A3F | teal #12806B | mint #E8F5EF | coral #F0633C
             coral-dk #D14A26 | slate #52605C | line #D9E8E1
   Type    : 'Space Grotesk' (display) + 'IBM Plex Sans' (body)
   Motif   : rising oxygen bubbles (oxygen-releasing mechanism)
   Rules   : grids minmax(0,1fr) · flex min-width:0 · img max-width min(Npx,100%)
             mobile hero order = IMAGE first, then H1, then rest
=================================================================== */

:root{
  --teal-dp:#094A3F;
  --teal-dk:#073A31;
  --teal:#12806B;
  --mint:#E8F5EF;
  --paper:#FBFCFA;
  --coral:#F0633C;
  --coral-dk:#D14A26;
  --slate:#52605C;
  --ink:#12241E;
  --line:#D9E8E1;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:'IBM Plex Sans',sans-serif;
  font-size:17px;line-height:1.72;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:'Space Grotesk',sans-serif;font-weight:700;line-height:1.18;margin:0 0 .5em;color:var(--teal-dp)}
h1{font-size:clamp(2.05rem,5vw,3.2rem)}
h2{font-size:clamp(1.6rem,3.3vw,2.3rem)}
h3{font-size:1.3rem}
h4{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:1.02rem;margin:0 0 .5em;color:var(--teal-dp)}
p{margin:0 0 1.15em}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.od-wrap{max-width:1150px;margin:0 auto;padding:0 22px}
.od-narrow{max-width:820px;margin:0 auto}
.od-mid{text-align:center}

.od-eyebrow{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.15em;
  text-transform:uppercase;color:var(--coral-dk);margin-bottom:.8em}
.od-pill{display:inline-flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:9px 19px;font-size:.82rem;font-weight:700;color:var(--teal-dp);
  box-shadow:0 3px 12px rgba(9,74,63,.08)}

.od-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--teal-dp);
  color:#fff;font-weight:700;font-size:.98rem;padding:15px 30px;border:none;border-radius:9px;cursor:pointer;
  transition:transform .16s,background .16s,box-shadow .16s;box-shadow:0 10px 24px rgba(9,74,63,.22)}
.od-btn:hover{background:var(--teal-dk);transform:translateY(-2px);color:#fff}
.od-btn-coral{background:var(--coral);color:#fff;box-shadow:0 10px 24px rgba(240,99,60,.3)}
.od-btn-coral:hover{background:var(--coral-dk)}
.od-btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:#fff;
  border:1px solid var(--line);color:var(--teal-dp);font-weight:700;font-size:.95rem;padding:14px 26px;
  border-radius:9px;transition:.16s}
.od-btn-ghost:hover{border-color:var(--teal);color:var(--teal)}
.od-btn-full{width:100%}

.od-strip{background:var(--teal-dp);color:#BFE0D6;font-size:.77rem;text-align:center;padding:9px 16px}
.od-strip b{color:#fff}
.od-strip span{white-space:nowrap;margin:0 10px;display:inline-block}
@media(max-width:580px){.od-strip{font-size:.7rem;line-height:1.55}.od-strip span{white-space:normal;margin:0 6px}}

.od-nav{position:sticky;top:0;z-index:900;background:rgba(251,252,250,.94);backdrop-filter:blur(9px);
  border-bottom:1px solid var(--line)}
.od-nav .od-wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 22px}
.od-logo{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:1.32rem;color:var(--teal-dp);white-space:nowrap}
.od-logo em{font-style:normal;color:var(--coral-dk)}
.od-links{display:flex;align-items:center;gap:24px;list-style:none;margin:0;padding:0}
.od-links a{font-size:.9rem;font-weight:600;color:var(--ink);opacity:.8}
.od-links a:hover{opacity:1;color:var(--teal)}
.od-toggle{display:none;background:none;border:none;color:var(--teal-dp);font-size:1.5rem;cursor:pointer}
@media(max-width:1020px){
  .od-links{position:absolute;top:100%;left:0;right:0;background:var(--paper);flex-direction:column;
    align-items:stretch;gap:0;border-top:1px solid var(--line);display:none;max-height:76vh;overflow:auto}
  .od-links.open{display:flex}
  .od-links li{border-bottom:1px solid var(--line)}
  .od-links a{display:block;padding:15px 22px}
  .od-links .od-btn{margin:14px 22px;width:calc(100% - 44px)}
  .od-toggle{display:block}
}

.od-sec{padding:76px 0}
.od-sec-mint{background:var(--mint)}
.od-sec-dark{background:var(--teal-dp);color:#BFE0D6}
.od-sec-dark h2,.od-sec-dark h3,.od-sec-dark h4{color:#fff}
.od-sec-dark .od-eyebrow{color:#F5A084}
.od-head{max-width:770px;margin:0 auto 46px;text-align:center}
.od-head p{color:var(--slate)}
.od-sec-dark .od-head p{color:#9FCABD}

.od-hero{background:radial-gradient(760px 420px at 84% 8%, rgba(240,99,60,.1) 0%, transparent 60%),
  radial-gradient(640px 360px at 6% 92%, rgba(9,74,63,.07) 0%, transparent 60%), var(--paper);
  padding:52px 0 68px;overflow:hidden}
.od-hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:50px;align-items:center}
.od-hero-shot{text-align:center;position:relative}
.od-hero-shot img{max-width:min(400px,100%);margin:0 auto;filter:drop-shadow(0 28px 44px rgba(9,74,63,.2))}
.od-hero h1 em{font-style:normal;color:var(--coral-dk)}
.od-lede{font-size:1.05rem;color:var(--slate);max-width:37em}

.od-answer{background:#fff;border-radius:12px;padding:23px 25px;margin:0 0 22px;
  box-shadow:0 8px 26px rgba(9,74,63,.08);border-left:4px solid var(--coral)}
.od-answer .tag{display:block;font-size:.69rem;font-weight:800;letter-spacing:.17em;text-transform:uppercase;
  color:var(--coral-dk);margin-bottom:9px}
.od-answer p{margin:0;color:var(--slate)}
.od-answer p.first{color:var(--teal-dp);font-weight:700;margin-bottom:.75em}
.od-sec-dark .od-answer{background:rgba(255,255,255,.06);box-shadow:none;border-color:#F5A084}
.od-sec-dark .od-answer p{color:#9FCABD}
.od-sec-dark .od-answer p.first{color:#fff}

.od-facts{display:flex;flex-wrap:wrap;gap:9px;list-style:none;margin:0 0 22px;padding:0}
.od-facts li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;
  font-size:.8rem;font-weight:700;color:var(--teal-dp)}

.od-check{list-style:none;margin:0 0 24px;padding:0}
.od-check li{position:relative;padding-left:30px;margin-bottom:11px;font-size:.96rem;font-weight:500}
.od-check li::before{content:'\2713';position:absolute;left:0;top:1px;width:20px;height:20px;border-radius:50%;
  background:var(--coral);color:#fff;font-size:.68rem;font-weight:800;display:flex;align-items:center;justify-content:center}

.od-figures{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px;margin:0 0 26px}
.od-figures div{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 8px;text-align:center}
.od-figures b{display:block;font-family:'Space Grotesk',sans-serif;font-size:1.45rem;color:var(--teal-dp);line-height:1.1}
.od-figures span{font-size:.71rem;font-weight:700;color:var(--slate);text-transform:uppercase;letter-spacing:.06em}

.od-hero-btns{display:flex;flex-wrap:wrap;gap:13px;margin-bottom:20px}
.od-hero-trust{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:.79rem;font-weight:700;color:var(--slate)}

@media(max-width:920px){
  .od-hero-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .od-hero-copy{display:contents}
  .od-hero-shot{order:1}
  .od-hero-title{order:2}
  .od-hero-rest{order:3}
  .od-hero-shot img{max-width:min(300px,100%)}
}

/* ---------- oxygen bubble signature ---------- */
.od-fizz{position:relative;margin-top:14px;height:64px;overflow:hidden;pointer-events:none}
.od-fizz-bubble{position:absolute;bottom:-14px;border-radius:50%;
  background:radial-gradient(circle at 32% 28%, rgba(255,255,255,.95), rgba(240,99,60,.15) 60%, rgba(18,128,107,.28));
  border:1px solid rgba(18,128,107,.35);
  animation:od-rise linear infinite;
}
@keyframes od-rise{
  0%{transform:translateY(0) scale(.8);opacity:0}
  12%{opacity:.9}
  100%{transform:translateY(-78px) scale(1.05);opacity:0}
}
.od-fizz-label{text-align:center;color:var(--slate);font-size:.78rem;font-weight:700;margin-top:2px;letter-spacing:.02em}

.od-grid{display:grid;gap:20px}
.od-g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.od-g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.od-g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:980px){.od-g4{grid-template-columns:repeat(2,minmax(0,1fr))}.od-g3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.od-g4,.od-g3,.od-g2{grid-template-columns:minmax(0,1fr)}}

.od-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:26px 22px}
.od-card p{color:var(--slate);font-size:.93rem;margin:0}
.od-sec-dark .od-card{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.13)}
.od-sec-dark .od-card p{color:#9FCABD}
.od-card-badge{text-align:center}
.od-card-badge img{max-width:min(135px,100%);margin:0 auto 14px}

.od-idx{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:8px;
  background:var(--teal-dp);color:#fff;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:.9rem;margin-bottom:13px}
.od-idx-coral{background:var(--coral);color:#fff}

.od-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center}
@media(max-width:920px){.od-split{grid-template-columns:minmax(0,1fr);gap:30px}}
.od-split img{max-width:min(440px,100%);margin:0 auto;border-radius:12px}
.od-split-copy p{color:var(--slate)}
.od-sec-dark .od-split-copy p{color:#9FCABD}

.od-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}
@media(max-width:780px){.od-list{grid-template-columns:minmax(0,1fr)}}
.od-list li{background:#fff;border:1px solid var(--line);border-left:3px solid var(--coral);
  border-radius:0 8px 8px 0;padding:15px 18px;font-size:.92rem;color:var(--slate)}
.od-list li b{display:block;color:var(--teal-dp);margin-bottom:3px;font-size:.97rem}

.od-callout{background:#fff;border:1px solid var(--line);border-radius:10px;padding:22px 24px;font-size:.92rem;color:var(--slate)}
.od-callout b{color:var(--teal-dp)}
.od-callout a{color:var(--coral-dk);text-decoration:underline;text-underline-offset:3px}
.od-flag{background:#FEF3EC;border:1px solid #F3CBB4;border-radius:10px;padding:21px 23px;font-size:.9rem;color:#7A4526}
.od-flag b{color:#B4552B}
.od-alert{background:#FBEBEC;border:1px solid #E7BFC2;border-radius:10px;padding:21px 23px;font-size:.9rem;color:#7C3033}
.od-alert b{color:#A2262A}

.od-rev-head{display:flex;align-items:center;gap:13px;margin-bottom:11px}
.od-rev-head img{width:52px;height:52px;border-radius:50%;object-fit:cover;flex-shrink:0}
.od-rev-name{font-weight:800;font-size:.94rem;color:var(--teal-dp)}
.od-rev-sub{font-size:.77rem;color:var(--slate)}
.od-stars{color:var(--coral-dk);letter-spacing:2px;font-size:.9rem;margin-bottom:8px}
.od-board{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;text-align:center;margin-top:34px}
@media(max-width:680px){.od-board{grid-template-columns:minmax(0,1fr)}}
.od-board b{display:block;font-family:'Space Grotesk',sans-serif;font-size:1.9rem;color:var(--teal-dp)}
.od-board span{font-size:.78rem;font-weight:700;color:var(--slate);text-transform:uppercase;letter-spacing:.08em}

.od-plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:stretch}
@media(max-width:980px){.od-plans{grid-template-columns:minmax(0,1fr);max-width:430px;margin:0 auto}}
.od-plan{background:#fff;border:2px solid var(--line);border-radius:14px;padding:28px 22px;text-align:center;
  display:flex;flex-direction:column;position:relative}
.od-plan.top{border-color:var(--coral);box-shadow:0 24px 46px rgba(240,99,60,.18)}
@media(min-width:981px){.od-plan.top{transform:translateY(-10px)}}
.od-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--coral);color:#fff;
  font-size:.72rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;padding:6px 16px;border-radius:999px;white-space:nowrap}
.od-badge-teal{background:var(--teal-dp);color:#fff}
.od-plan img.pk{max-width:min(180px,100%);margin:8px auto 16px}
.od-plan-ttl{font-family:'Space Grotesk',sans-serif;font-size:1.4rem;color:var(--teal-dp)}
.od-plan-sub{font-size:.83rem;color:var(--slate);margin-bottom:14px}
.od-plan-price{font-family:'Space Grotesk',sans-serif;font-size:2.4rem;color:var(--teal-dp);line-height:1}
.od-plan-price small{font-family:'IBM Plex Sans',sans-serif;font-size:.8rem;font-weight:600;color:var(--slate)}
.od-plan-tot{font-weight:800;font-size:.97rem;color:var(--teal-dp);margin:8px 0 6px}
.od-plan-ship{font-size:.83rem;font-weight:800;color:var(--coral-dk);margin-bottom:12px}
.od-plan-ship.pay{color:var(--slate)}
.od-plan ul{list-style:none;margin:0 0 18px;padding:0;text-align:left;font-size:.86rem;color:var(--slate)}
.od-plan ul li{position:relative;padding-left:21px;margin-bottom:7px}
.od-plan ul li::before{content:'\2713';position:absolute;left:0;color:var(--coral-dk);font-weight:800}
.od-plan .od-btn{margin-top:auto}
.od-plan .cards{max-width:min(165px,100%);margin:13px auto 0;opacity:.6}

.od-guar{display:grid;grid-template-columns:auto minmax(0,1fr);gap:40px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:36px}
@media(max-width:820px){.od-guar{grid-template-columns:minmax(0,1fr);gap:24px;text-align:center;padding:28px 22px}}
.od-guar img{max-width:min(175px,100%);margin:0 auto}
.od-guar p{color:var(--slate)}

.od-steps{display:grid;gap:15px}
.od-step{background:#fff;border:1px solid var(--line);border-radius:10px;padding:22px 24px;
  display:grid;grid-template-columns:auto minmax(0,1fr);gap:18px;align-items:start}
.od-step .n{width:34px;height:34px;border-radius:8px;background:var(--mint);color:var(--teal-dp);
  font-family:'Space Grotesk',sans-serif;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:.92rem}
.od-step p{margin:0;color:var(--slate);font-size:.93rem}

.od-faq{border-top:1px solid var(--line)}
.od-faq-row{border-bottom:1px solid var(--line)}
.od-faq-btn{width:100%;background:none;border:none;text-align:left;cursor:pointer;padding:20px 4px;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:1.05rem;color:var(--teal-dp)}
.od-faq-btn::after{content:'+';font-size:1.4rem;color:var(--coral-dk);flex-shrink:0;transition:transform .2s}
.od-faq-row.on .od-faq-btn::after{transform:rotate(45deg)}
.od-faq-body{max-height:0;overflow:hidden;transition:max-height .28s ease}
.od-faq-body p{padding:0 4px 20px;margin:0;color:var(--slate);font-size:.94rem}

.od-refs{list-style:none;margin:0 0 18px;padding:0}
.od-refs li{padding:11px 0;border-bottom:1px solid var(--line);font-size:.91rem;color:var(--slate)}
.od-refs a{color:var(--coral-dk);font-weight:700;text-decoration:underline;text-underline-offset:3px}

.od-final{background:linear-gradient(150deg,var(--teal-dp) 0%,var(--teal-dk) 100%);border-radius:18px;
  padding:52px 30px;text-align:center}
.od-final h2{color:#fff}
.od-final p{color:#9FCABD}
.od-final img{max-width:min(300px,100%);margin:22px auto}
.od-final .old{color:#9FCABD;text-decoration:line-through}
.od-final .new{font-family:'Space Grotesk',sans-serif;font-size:2.1rem;color:#F5A084;margin:4px 0 20px}
.od-final .sm{font-size:.84rem;color:#9FCABD;margin:16px 0 0}

.od-crumb{font-size:.81rem;color:var(--slate);padding:16px 0 0}
.od-crumb a{color:var(--coral-dk);font-weight:700}
.od-crumb i{font-style:normal;margin:0 7px;opacity:.5}

.od-rel{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
@media(max-width:780px){.od-rel{grid-template-columns:minmax(0,1fr)}}
.od-rel a{display:block;background:#fff;border:1px solid var(--line);border-radius:10px;padding:19px 20px;transition:.18s}
.od-rel a:hover{border-color:var(--coral);transform:translateY(-2px)}
.od-rel b{display:block;font-size:.96rem;color:var(--teal-dp);margin-bottom:5px}
.od-rel span{font-size:.84rem;color:var(--slate)}

.od-article h2{margin-top:1.6em}
.od-article p{color:var(--slate)}
.od-article a{color:var(--coral-dk);text-decoration:underline;text-underline-offset:3px}
.od-meta{font-size:.86rem;color:var(--slate);margin-bottom:26px}
.od-meta a{color:var(--coral-dk);font-weight:700}

.od-foot{background:var(--teal-dk);color:#8FB8AC;padding:48px 0 34px;font-size:.87rem}
.od-foot a{color:#D3EAE2}
.od-foot a:hover{color:#F5A084}
.od-foot-nav{display:flex;flex-wrap:wrap;justify-content:center;gap:12px 25px;list-style:none;margin:0 0 20px;padding:0;font-weight:700}
.od-foot-legal{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 21px;list-style:none;margin:0 0 26px;padding:0;font-size:.84rem}
.od-foot hr{border:none;border-top:1px solid rgba(255,255,255,.12);margin:22px 0}
.od-foot p{margin:0 0 14px;line-height:1.68}
.od-foot .cr{text-align:center;font-size:.84rem;opacity:.85;margin-top:22px}

.od-sticky{position:fixed;left:0;right:0;bottom:0;z-index:950;background:var(--teal-dk);border-top:2px solid var(--coral);
  padding:9px 15px;display:none;align-items:center;justify-content:space-between;gap:12px;box-shadow:0 -6px 22px rgba(0,0,0,.25)}
.od-sticky .t{min-width:0;line-height:1.25;color:#fff}
.od-sticky .t b{display:block;font-size:.92rem;color:#F5A084;font-family:'Space Grotesk',sans-serif}
.od-sticky .t small{color:#9FCABD;font-size:.71rem}
.od-sticky .od-btn{padding:11px 18px;font-size:.86rem;flex-shrink:0}
@media(max-width:920px){.od-sticky{display:flex}body{padding-bottom:68px}}